阅读说明：本技术 一种翻折机头、翻折结构及翻折成型机 (Turnover machine head, turnover structure and turnover forming machine ) 是由 刘军 于 2021-09-10 设计创作，主要内容包括：本发明提供一种翻折机头、翻折结构及翻折成型机,其中内轴可移动地插入安装在外筒内部；驱动花爪可转动地套设安装在内轴上,且具有若干驱动爪；外筒上设有若干第一长条通孔,驱动爪经由第一长条通孔向外伸出；花爪驱动结构设置在内轴上,在内轴作伸缩移动时,用于驱动驱动花爪运动；翻折杆的一端可转动地连接在驱动爪上,另一端为翻折推动端；张开结构用于在内轴前伸时外凸推动翻折杆张开,在内轴回缩时回收,翻折杆在复位结构的作用下复位；本发明的翻折机头,可以实现卷绕成筒的橡胶皮端部的自动翻折,可以显著降低工人的劳动强度,提高生产效率,翻折机头的翻折作用力由机器驱动,与人工相比驱动力更大,因而翻折效果更好。(The invention provides a turnover machine head, a turnover structure and a turnover forming machine, wherein an inner shaft is movably inserted and installed in an outer cylinder; the driving claw is rotatably sleeved on the inner shaft and is provided with a plurality of driving claws; a plurality of first strip-shaped through holes are formed in the outer barrel, and the driving claw extends outwards through the first strip-shaped through holes; the claw driving structure is arranged on the inner shaft and used for driving the claw to move when the inner shaft moves in a telescopic way; one end of the turnover rod is rotatably connected to the driving claw, and the other end of the turnover rod is a turnover pushing end; the opening structure is used for outwards protruding to push the turnover rod to open when the inner shaft extends forwards and recovering when the inner shaft retracts, and the turnover rod resets under the action of the resetting structure; the turnover machine head can realize automatic turnover of the end part of the rubber sheet wound into a barrel, can obviously reduce the labor intensity of workers and improve the production efficiency, and the turnover force of the turnover machine head is driven by a machine, so that the driving force is larger than that of manual work, and the turnover effect is better.)

1. A turnover head, comprising:

an outer cylinder (1) having a hollow inner cavity;

the inner shaft (2) is arranged in the outer cylinder (1) and can stretch and move along the axial direction of the inner shaft under the action of external force;

the driving claw (3) is rotatably sleeved on the inner shaft (2) and is provided with a plurality of driving claws (31) which extend outwards for a certain length from a first strip through hole (11) formed in the outer cylinder (1);

the claw driving structure is arranged on the inner shaft (2) and drives the claw (3) to move when the inner shaft (2) moves telescopically;

the folding rods (4) are provided with a plurality of rods, one end of each rod is rotatably connected with the driving claw (31), and the other end of each rod is a folding pushing end (41);

the resetting structure is used for pulling the turnover pushing end (41) to be inwards recovered and reset;

the opening structure is arranged on the outer barrel (1) and the inner shaft (2), and protrudes outwards when the inner shaft (2) extends forwards to push the turnover rod (4) to open; when the inner shaft (2) retracts, the turnover rod (4) is retracted inwards, and the turnover rod is restored inwards under the action of the restoration structure.

2. The folder head as recited in claim 1, wherein the flaring structure comprises:

the cone head sleeve (5) is provided with a cone end (51) at one end and a cylindrical end (52) at the other end, and the cylindrical end (52) and the inner shaft (2) are rotatably arranged;

the outer cylinder (1) positioned below the turnover rod (4) is provided with a second long-strip through hole (12), and the opening piece (6) is arranged at the position of the second long-strip through hole (12); the expanding pieces (6) are provided with a plurality of expanding wheels (62), one end of each expanding piece is rotatably and fixedly arranged on the outer cylinder (1), the other end of each expanding piece extends towards the direction of the driving flower claw (3), and each expanding wheel is provided with a first expanding wheel (61) extending towards one side of the outer side surface of the cone head sleeve (5) and a second expanding wheel (62) arranged along the extending direction of the expanding pieces (6);

when the inner shaft (2) extends forwards, the first expanding wheel (61) can be in contact with the outer side surface of the conical end (51) and can roll from the outer side surface of the conical end (51) to the outer side surface of the cylindrical end (52), and at the moment, the second expanding wheel (62) gradually pushes the turnover rod (4) to expand;

when the inner shaft (2) retracts, the first expanding wheel (61) can roll from the outer side surface of the cylindrical end (52) to the outer side surface of the conical end (51) and can gradually separate from the outer side surface of the conical end (51), at the moment, the second expanding wheel (62) is gradually reset, and the turnover rod (4) is recovered and reset under the action of the reset structure.

3. The folder head as recited in claim 2, further comprising:

an inner cavity (50) arranged inside the cone sleeve (5), opened from the cylindrical end (52) and adapted to allow the front end of the inner shaft (2) to be inserted;

the tapered roller bearing (53) is sleeved at the front end of the inner shaft (2) and is installed into the inner cavity (50), and one end of the outer ring is abutted against a step ring (56) formed on the side wall of the inner cavity (50);

an end nut (54) screwed to the tip of the inner shaft (2) and abutting against the inner ring of the tapered roller bearing (53);

and the end cover (55) is sleeved on the inner shaft (2), is fixedly arranged at the opening of the inner cavity (50), and is abutted against the other end of the outer ring of the tapered roller bearing (53).

4. The folder head as recited in claim 2, wherein: an arc-shaped supporting plate (63) is arranged on the outer wall of the opening part (6);

preferably, the width of the arc-shaped support plate (63) is larger than that of the flaring piece (6);

preferably, one end of the arc-shaped supporting plate (63) facing the driving claw (3) is formed with a flange structure.

5. The folder head of claim 3, wherein the clutch drive structure includes:

a drive sleeve (71) fixedly mounted on the inner shaft (2);

the reset sleeve (72) is rotatably arranged on the inner shaft (2), a reset inner cavity (70) is arranged on one side facing the driving sleeve (71), and a reset annular bulge (73) is arranged on one side facing the cone head sleeve (5); after the reset sleeve (72) is sleeved on the inner shaft (2), a reset annular mounting cavity (74) for mounting a reset spring (75) is formed between the inner wall of the reset inner cavity (70) and the outer wall of the inner shaft (2); the return annular projection (73) passes through a gap between the end cover (55) and the inner shaft (2) and abuts against an inner ring of the tapered roller bearing (53);

the driving claw (3) is rotatably arranged between the driving sleeve (71) and the reset sleeve (72) directly or through a rotating sleeve (32);

the return spring (75) is sleeved on the inner shaft (2), one end of the return spring is installed and enters the return annular installation cavity (74), and the other end of the return spring abuts against the driving claw (3) or the rotating sleeve (32);

preferably, the device further comprises a fixedly arranged claw limiting structure, when the inner shaft (2) extends to the maximum extent, the spacing distance between the claw limiting structure and the driving claw (3) is basically equal to the spacing distance at the boundary of the cylindrical end (52) and the outer side surface of the conical end (51) when the first spreading wheel (61) contacts the cylindrical end (52).

6. A turnover structure comprising a first turnover head (100) and a second turnover head (200) with opposite heads, wherein the first turnover head (100) and the second turnover head (200) are the turnover heads of any one of claims 1 to 5, and wherein:

the heads of the first turnover machine head (100) and the second turnover machine head (200) can be matched and spliced;

the first driving structure is used for driving the first turnover head (100) from the tail part, and the second driving structure is used for driving the second turnover head (200) from the tail part;

the first driving structure is rotatably connected with the tail part of the outer cylinder (1) of the first turnover machine head (100), can push the first turnover machine head (100) to integrally move towards the direction close to or far away from the second turnover machine head (200), and can push the inner shaft (2) of the first turnover machine head (100) to do telescopic motion;

the second driving structure is rotatably connected with the tail part of the outer cylinder (1) of the second turnover machine head (200), can drive the outer cylinder (1) of the second turnover machine head (200) to rotate, and can also push the inner shaft (2) of the second turnover machine head (200) to do telescopic motion.

7. The fold-over structure of claim 6, wherein: the head of the first turnover machine head (100) is fixedly provided with a plug-in connector (101), the head of the second turnover machine head (200) is fixedly provided with an insertion sleeve (201), and the plug-in connector (101) can be inserted into the insertion sleeve (201) to realize insertion installation; a positioning through hole (102) is axially formed along the plug connector (101);

or the head of the first turnover machine head (100) is fixedly provided with an inserting sleeve (201), the head of the second turnover machine head (200) is fixedly provided with an inserting head (101), and the inserting head (101) can be inserted into the inserting sleeve (201) to realize inserting installation; and a positioning through hole (102) is axially arranged along the plug connector (101).

8. The folding structure of claim 6 wherein said first drive structure comprises:

a support platform (301) movably mounted on the stationary frame (500) by a guide structure;

the first bearing seat (302) is fixedly arranged on the supporting platform (301), a first bearing is arranged in the first bearing seat, and the outer ring of the first bearing is fixedly arranged on the first bearing seat (302);

the first driving barrel (303) is rotatably arranged on the first bearing seat (302), one end of the first driving barrel is fixedly connected with the outer barrel (1) of the first turnover machine head (100), the other end of the first driving barrel is rotatably arranged on the supporting platform (301), and the middle part of the first driving barrel is rotatably arranged in the first bearing seat (302) through the first bearing;

a first driving shaft (304) which passes through the first driving cylinder (303) and is connected with the end part of the inner shaft (2);

the first oil cylinder is used for driving the supporting platform (301) to move along the guide structure;

and the second oil cylinder (305) is arranged on the supporting platform (301) and is used for driving the first driving shaft (304) to move in a telescopic mode so as to drive the inner shaft (2) of the first turnover machine head (100) to move in a telescopic mode.

9. The folding structure of claim 6 wherein said second drive structure comprises:

the second bearing seat (401) is fixedly arranged on the fixed base (500), a second bearing is arranged in the second bearing seat, and the outer ring of the second bearing is fixedly arranged on the second bearing seat (401);

the second driving cylinder (402) is rotatably arranged on the second bearing block (401), one end of the second driving cylinder is fixedly connected with the outer cylinder (1) of the second turnover machine head (200), the other end of the second driving cylinder is an open end, and the middle part of the second driving cylinder is rotatably arranged in the second bearing block (401) through the second bearing;

a second driving shaft (403) which passes through the second driving cylinder (402) and is connected with the end part of the inner shaft (2);

the driving motor (404) is used for driving the second driving cylinder (402) to rotate;

and the third oil cylinder (405) is used for driving the second driving shaft (403) to move in a telescopic mode, and further driving the inner shaft (2) of the second turnover machine head (200) to move in a telescopic mode.

10. The utility model provides a turn over a make-up machine, includes fixed frame (500) and installs the structure of turning over on fixed frame (500), its characterized in that: the fold-over structure is as claimed in any one of claims 6 to 9.

Technical Field

The invention relates to the technical field of equipment for producing a green tire of a pipeline connecting piece, in particular to a turnover machine head, a turnover structure and a turnover forming machine capable of turning over the green tire of the pipeline connecting piece.

Background

The pipeline connecting piece is made of rubber, has certain flexibility, and can be used for connecting pipelines, particularly metal pipelines; the pipeline connecting piece is used for connecting a pipeline with large vibration and a pipeline with frequent cold and hot changes, so that the vibration and noise can be reduced, and the compensation effect on expansion caused by temperature change and contraction caused by cold and hot can be realized. The pipeline connecting piece is widely applied to various pipeline systems in the water-electricity, chemical and metallurgical industries.

The production of the pipeline connecting piece is to form a green tire and then place the green tire into a die for hot-press molding. The production of green tire is generally to wind a plurality of layers of rubber sheets into a cylinder shape, after two steel wire rings are sleeved at proper positions on the outer side, the rubber sheets at the end parts are reversely turned over, the steel wire rings are turned over inside, then the rubber sheets turned over reversely are compacted, finally a layer of rectangular rubber pad is wound at the middle position, and the rubber pad is compacted.

In the prior art, the production of the green tire of the pipeline connecting piece generally adopts manpower, and the step of turning over the end rubber sheet is very laborious, so that the production efficiency is low, and the turning over effect is poor. Therefore, how to develop a device capable of helping to fold the end rubber sheets to produce the green tires of the pipe connectors is a technical problem to be solved urgently by those skilled in the art.

Disclosure of Invention

Therefore, the invention aims to solve the technical problems that no special equipment for producing the green tires of the pipeline connecting pieces exists in the prior art, manual production is generally adopted, and particularly, the technical defects of high labor intensity, low production efficiency and poor folding effect exist in the folding step, so that the folding machine head with low labor intensity, high production efficiency and good folding effect is provided.

The invention also provides a turnover structure with the turnover machine head and a turnover forming machine.

To this end, the invention provides a folding head comprising:

an outer barrel having a hollow inner cavity;

the inner shaft is arranged in the outer barrel and can stretch and move along the axial direction of the inner shaft under the action of external force;

the driving claw is rotatably sleeved on the inner shaft and provided with a plurality of driving claws which extend outwards for a certain length from a first strip-shaped through hole formed in the outer cylinder;

the claw driving structure is arranged on the inner shaft and drives the claw driving structure to move when the inner shaft moves in a telescopic way;

the folding rods are provided with a plurality of folding rods, one end of each folding rod is rotatably connected with the driving claw, and the other end of each folding rod is a folding pushing end;

the reset structure is used for pulling the turnover pushing end to be retracted inwards for resetting;

the opening structure is arranged on the outer barrel and the inner shaft, and protrudes outwards when the inner shaft extends forwards to push the turnover rod to open; when the inner shaft retracts, and the turnover rod retracts inwards under the action of the reset structure to reset.

As a preferable mode, the splaying structure includes:

the cone head sleeve is provided with a cone end at one end and a cylindrical end at the other end, and the cylindrical end and the inner shaft are rotatably arranged;

the outer barrel is positioned below the turnover rod and is provided with a second long through hole, and the opening piece is arranged at the position of the second long through hole; the plurality of opening pieces are provided, one end of each opening piece is rotatably and fixedly arranged on the outer cylinder, the other end of each opening piece extends towards the direction of the driving flower claw, and each opening piece is provided with a first opening wheel extending towards one side of the outer side surface of the cone head sleeve and a second opening wheel arranged along the extending direction of the opening piece;

when the inner shaft extends forwards, the first expanding wheel can be in contact with the outer side face of the conical end and can roll from the outer side face of the conical end to the outer side face of the cylindrical end, and the second expanding wheel gradually pushes the turnover rod to expand;

when the inner shaft retracts, the first expanding wheel can roll from the outer side face of the cylindrical end to the outer side face of the conical end and can be gradually separated from the outer side face of the conical end, the second expanding wheel is gradually reset at the moment, and the turnover rod is recovered and reset under the action of the reset structure.

As a preferable scheme, the method further comprises the following steps:

the inner cavity is arranged in the cone head sleeve, is opened from the cylindrical end and is suitable for the front end of the inner shaft to be inserted;

the tapered roller bearing is sleeved at the front end of the inner shaft and is installed into the inner cavity, and one end of the outer ring is abutted with a step ring formed on the side wall of the inner cavity;

an end nut screwed to the front end of the inner shaft and abutting against the inner ring of the tapered roller bearing;

and the end cover is sleeved on the inner shaft, is fixedly arranged at the opening of the inner cavity and is abutted against the other end of the tapered roller bearing outer ring.

As a preferable scheme, an arc-shaped supporting plate is arranged on the outer wall of the opening part;

preferably, the width of the arc-shaped support plate is larger than that of the flaring piece;

preferably, the end of the arc-shaped support plate facing the driving claw is formed with a flange structure.

As a preferable scheme, the reset structure is an elastic ring which is arranged on the turnover rod and/or the turnover pushing end in a penetrating way.

As a preferable scheme, a turnover roller is arranged on the turnover pushing end, a reset through hole is arranged on the turnover roller and the turnover pushing end for installing the turnover roller, and the elastic ring penetrates through the reset through hole.

As a preferable aspect, the claw driving structure includes:

the driving sleeve is fixedly arranged on the inner shaft;

the reset sleeve is rotatably arranged on the inner shaft, a reset inner cavity is arranged on one side facing the driving sleeve, and a reset annular bulge is arranged on one side facing the cone head sleeve; after the reset sleeve is sleeved on the inner shaft, a reset annular mounting cavity for mounting a reset spring is formed between the inner wall of the reset inner cavity and the outer wall of the inner shaft; the reset annular bulge passes through a gap between the end cover and the inner shaft and is abutted against the bearing inner ring;

the driving claw is rotatably arranged between the driving sleeve and the reset sleeve directly or through a rotating sleeve;

the reset spring is sleeved on the inner shaft, one end of the reset spring is installed and enters the reset annular installation cavity, and the other end of the reset spring abuts against the driving claw or the rotating sleeve;

preferably, the inner shaft is extended to the maximum extent, the spacing distance between the spline claw limiting structure and the driving spline claw is substantially equal to the spacing distance between the cylindrical end and the outer side surface of the conical end at the contact position of the first expander and the cylindrical end.

The invention also provides a turnover structure, which comprises a first turnover machine head and a second turnover machine head, wherein the heads of the first turnover machine head and the second turnover machine head are oppositely arranged, the first turnover machine head and the second turnover machine head are both the turnover machine head, and the heads of the first turnover machine head and the second turnover machine head can be matched and spliced;

the first driving structure drives the first turnover machine head from the tail part, and the second driving structure drives the second turnover machine head from the tail part;

the first driving structure is rotatably connected with the tail part of the outer cylinder of the first turnover machine head, can push the first turnover machine head to integrally move towards the direction close to or far away from the second turnover machine head, and can push the inner shaft of the first turnover machine head to do telescopic motion;

the second driving structure is rotatably connected with the tail part of the outer cylinder of the second turnover machine head, can drive the outer cylinder of the second turnover machine head to rotate, and can push the inner shaft of the second turnover machine head to do telescopic motion.

As a preferred scheme, the head of the first turnover machine head is fixedly provided with a plug connector, the head of the second turnover machine head is fixedly provided with a plug sleeve, and the plug connector can be inserted into the plug sleeve to realize plug installation; a positioning through hole is formed along the axial direction of the plug connector;

or the head of the first turnover machine head is fixedly provided with an inserting sleeve, the head of the second turnover machine head is fixedly provided with an inserting head, and the inserting head can be inserted into the inserting sleeve to realize inserting installation; and a positioning through hole is formed along the axial direction of the plug connector.

As a preferable aspect, the first driving structure includes:

the supporting platform is movably arranged on the fixed base through a guide structure;

the first bearing seat is fixedly arranged on the supporting platform, a first bearing is arranged in the first bearing seat, and an outer ring of the first bearing is fixedly arranged on the first bearing seat;

the first driving cylinder is rotatably arranged on the first bearing seat, one end of the first driving cylinder is fixedly connected with the outer cylinder of the first turnover machine head, the other end of the first driving cylinder is rotatably arranged on the supporting platform, and the middle part of the first driving cylinder is rotatably arranged in the first bearing seat through the first bearing;

the first driving shaft penetrates through the first driving cylinder and is connected with the end part of the inner shaft;

the first oil cylinder is used for driving the supporting platform to move along the guide structure;

and the second oil cylinder is arranged on the supporting platform and used for driving the first driving shaft to move in a telescopic mode so as to drive the inner shaft of the first turnover machine head to move in a telescopic mode.

As a preferable aspect, the second driving structure includes:

the second bearing seat is fixedly arranged on the fixed base, a second bearing is arranged in the second bearing seat, and an outer ring of the second bearing is fixedly arranged on the second bearing seat;

the second driving cylinder is rotatably arranged on the second bearing block, one end of the second driving cylinder is fixedly connected with the outer cylinder of the second turnover machine head, the other end of the second driving cylinder is an opening end, and the middle part of the second driving cylinder is rotatably arranged in the second bearing block through the second bearing;

the second driving shaft penetrates through the second driving cylinder and is connected with the end part of the inner shaft;

the driving motor is used for driving the second driving cylinder to rotate;

and the third oil cylinder is used for driving the second driving shaft to move in a telescopic mode, and further driving the inner shaft of the second turnover machine head to move in a telescopic mode.

The invention also provides a turnover forming machine which comprises a fixed base and a turnover structure arranged on the fixed base, wherein the turnover structure is any one of the turnover structures.

The technical scheme provided by the invention has the following advantages:

1. the invention relates to a turnover machine head, which comprises an outer cylinder, an inner shaft, a driving claw, a claw driving structure, a turnover rod, a resetting structure and an opening structure, wherein the outer cylinder is fixedly connected with the inner shaft; the inner shaft is movably inserted into the outer cylinder; the driving claw is rotatably sleeved on the inner shaft and is provided with a plurality of driving claws; a plurality of first strip-shaped through holes are formed in the outer barrel, and the driving claw extends outwards through the first strip-shaped through holes; the claw driving structure is arranged on the inner shaft and used for driving the claw to move when the inner shaft moves in a telescopic way; one end of the turnover rod is rotatably connected to the driving claw, and the other end of the turnover rod is a turnover pushing end; the opening structure is used for outwards protruding to push the turnover rod to open when the inner shaft extends forwards and recovering when the inner shaft retracts, and the turnover rod resets under the action of the resetting structure; when the end part of the rubber skin wound into a cylindrical shape is folded, the inner shaft is driven to extend forwards, the expanding structure outwards extends to push the folding rod to expand, the rubber skin at the end part of the outer support is further extended forwards, the claw driving structure drives the claw driving structure to drive the claw driving structure to push the folding rod forwards, and therefore the end part of the rubber skin is folded; after the folding is finished, the inner shaft is recovered, the opening structure is recovered, the folding rod is recovered under the action of the reset structure and is retracted and reset under the driving of the claw driving structure; the turnover machine head can realize automatic turnover of the end part of the rubber sheet wound into a cylindrical shape, can obviously reduce the labor intensity of workers and improve the production efficiency, and the turnover force of the turnover machine head is driven by a machine, so that the driving force is larger than that of manual work, and the turnover effect is better.

2. The folding machine head comprises an opening structure, a folding mechanism and a folding mechanism, wherein the opening structure comprises a cone head sleeve and an opening piece; the conical head sleeve is provided with a conical end and a cylindrical end, wherein the cylindrical end and the end part of the inner shaft can be rotatably arranged; the opening piece is provided with a first opening wheel and a second opening wheel, the first opening wheel extends out towards one side of the outer side surface of the cone head sleeve, and the second opening wheel is arranged along the extending direction of the opening piece; a second strip-shaped through hole is formed in the outer barrel, and the opening piece is arranged in the second strip-shaped through hole; according to the turnover machine head, as for the opening structure, the outer side face of the cone head sleeve is skillfully used, when the inner shaft extends forwards, the first opening wheel can be contacted with the outer side face of the cone end and gradually rolls to the outer side face of the cylindrical end along the outer side face of the cone end, and in the process, one end of the opening piece, which is provided with the second opening wheel, is gradually lifted, and the turnover rod is pushed to open outwards; when the inner shaft retracts, the first stretching wheel can roll to the outer side face of the conical end from the outer side face of the cylindrical end gradually and is separated from the outer side face of the conical end gradually, in the process, one end of the stretching piece, provided with the second stretching wheel, falls back gradually, the pushing force for the turnover rod disappears gradually, and the turnover rod is reset gradually under the action of the reset structure.

3. The inner shaft and the conical head sleeve are rotatably connected, and the connection mode of the turnover machine head is that an inner cavity is arranged inside the conical head sleeve, an opening of the inner cavity is formed in the position of a cylindrical end, a step ring is arranged inside the inner cavity, a tapered roller bearing is sleeved on the inner shaft, one end of an outer ring of the tapered roller bearing is abutted against the step ring, and the other end of the outer ring of the tapered roller bearing is abutted against an end cover arranged at the opening of the inner cavity; one end of the tapered roller bearing inner ring is abutted by an end nut screwed at the front end of the inner shaft; the inner shaft and the cone head sleeve can rotate relatively, and the inner shaft can push the cone head sleeve to move back and forth through the tapered roller bearing.

4. According to the turnover machine head, the arc-shaped supporting plate is arranged on the outer wall of the opening part, and when the opening part is in an initial state, the outer side surface of the arc-shaped supporting plate is basically parallel to the outer side surface of the outer cylinder; when the opening part is in a convex state, the arc-shaped supporting plate is turned outwards, so that the gap between the opening part and the arc-shaped plate (the arc-shaped plate of the steel wire ring positioning device) can be reduced, the turning of the turning rod is easier, and the turning quality is better; the width of the arc-shaped supporting plate is larger than that of the opening part, when the opening part is in a convex state, the arc-shaped supporting plate turns outwards, the gap between the two arc-shaped supporting plates with larger widths is smaller, and the turned-over rubber sheets are conveniently compacted by the rolling wheel in the later stage; the one end of the orientation drive flower claw of arc backup pad is formed with the flange structure, turns over the outsourcing back inwards with the rubber skin of tip, can block the steel wire winding in this position, and when follow-up use rolling wheel roll extrusion, the position of steel wire winding can remain motionless.

5. According to the folding machine head, the reset structure is an elastic ring which is arranged on the folding rod or the folding pushing end in a penetrating mode, preferably, the folding pushing end is provided with the folding roller, the folding roller and the folding pushing end provided with the folding roller are provided with the reset through holes, and the elastic ring penetrates through the reset through holes; the elastic ring arranged at the position of the turnover pushing end has larger resetting force and better resetting effect.

6. According to the turnover machine head, the flower claw driving structure comprises a driving sleeve, a reset sleeve and a reset spring; the driving sleeve is fixedly arranged on the inner shaft, the reset sleeve is rotatably arranged on the inner shaft, a reset inner cavity is arranged on one side of the driving sleeve, a reset annular bulge is arranged on one side of the cone head sleeve, a reset annular installation cavity for installing a reset spring is formed between the inner wall of the reset inner cavity and the outer wall of the inner shaft, and the reset annular bulge penetrates through a gap between the end cover and the inner shaft and is abutted against the inner ring of the tapered roller bearing. When the inner shaft extends forwards, the driving sleeve pushes the driving claw or the rotating sleeve to move forwards so as to push the turnover rod to move forwards, and at the moment, the reset spring pushes the reset sleeve to move forwards synchronously; when the inner shaft retracts, the driving sleeve retracts along with the inner shaft, and the return spring pushes the driving claw or the rotating sleeve to retract so as to push the turnover rod to retract; preferably, the wire winding machine further comprises a fixed flower claw limiting structure for limiting the retreating distance of the driving flower claw, so that when the driving flower claw retreats to abut against the flower claw limiting structure, the opening part is still in a convex state, the folding roller just retreats to the outside of the steel wire ring, and at the moment, the steel wire ring is limited by the flange position of the arc-shaped supporting plate.

7. The invention also provides a turnover structure, which comprises a first turnover machine head and a second turnover machine head, wherein the heads of the first turnover machine head and the second turnover machine head are opposite, the first turnover machine head and the second turnover machine head are both of the turnover machine heads with the structures, the heads of the first turnover machine head and the second turnover machine head can be matched and spliced, and the turnover structure also comprises a first driving structure for driving the first turnover machine head from the tail part and a second driving structure for driving the second turnover machine head from the tail part; the turnover structure can turn over the end part of the rubber sheet and can drive the turned over rubber sheet to rotate, so that the reversely rolled rubber sheet is conveniently compacted.

8. According to the turnover structure, the heads of the first turnover machine head and the second turnover machine head are in matched splicing through the splicing fitting and the splicing sleeve, and a positioning through hole is formed in the axial direction of the splicing fitting; after the first folding machine head and the second folding machine head are matched and spliced through the splicing head and the splicing sleeve, the first folding machine head can be driven to rotate by the rotation of the second folding machine head; the tip parts of the cone head sleeves of the first turnover machine head and the second turnover machine head can be inserted into the positioning through holes, so that the auxiliary alignment of the first turnover machine head and the second turnover machine head is realized.

9. The invention also provides a turnover forming machine, which comprises a fixed seat and a turnover structure arranged on the fixed seat, wherein the turnover structure is any one of the turnover structures.

Drawings

To more clearly illustrate the technical solutions in the prior art or the embodiments of the present invention, the drawings used in the description of the prior art or the embodiments are briefly introduced below.

Fig. 1 is a schematic view of the overall structure of a folding head in embodiment 1 of the present invention.

Fig. 2 is a sectional view of fig. 1.

Fig. 3 is a schematic view of the mounting structure of the inner shaft and the cone sleeve.

Fig. 4 is a schematic view of the overall structure of the folding structure in embodiment 2 of the present invention.

Fig. 5 is an enlarged schematic view of a portion a of fig. 4.

Fig. 6 is a cross-sectional view of fig. 5.

Fig. 7 is a schematic view of the overall structure of the fold-folding molding machine according to embodiment 3 of the present invention.

Fig. 8 is a schematic view of the overall structure of fig. 7 with the folding structure removed.

Fig. 9 is an enlarged schematic view of the structure of part B in fig. 8.

Fig. 10 is a cross-sectional view of fig. 8.

Fig. 11 is an enlarged schematic view of the structure of the portion C in fig. 8.

Fig. 12 is a perspective view of the positioning and holding structure.

Figure 13 is a perspective view of the rolling device.

Reference numerals: 1. an outer cylinder; 11. a first elongated through hole; 12. a second elongated through hole; 2. an inner shaft; 3. driving the flower claw; 31. a driving pawl; 4. a folding rod; 41. turning over a pushing end; 42. turning over a roller; 43. a reset through hole; 5. a cone head sleeve; 50. an inner cavity; 51. a tapered end; 52. a cylindrical end; 53. a bearing; 54. an end nut; 55. an end cap; 56. a step ring; 6. an opening member; 61. a first expander wheel; 62. a second expander wheel; 63. an arc-shaped support plate; 70. resetting the inner cavity; 71. a drive sleeve; 72. a reset sleeve; 73. a reset annular projection; 74. a reset annular mounting cavity; 75. a return spring;

100. a first turnover machine head; 101. a plug-in connector; 102. positioning the through hole; 200. a second turnover machine head; 201. a plug bush; 301. a support platform; 302. a first bearing housing; 303. a first drive cylinder; 304. a first drive shaft; 305. a second cylinder; 401. a second bearing housing; 402. a second drive cylinder; 403. a second drive shaft; 404. a drive motor; 405. a third oil cylinder; 500. fixing the base;

601. mounting a platform; 602. a mounting seat; 603. a movable mounting post; 6030. installing a vertical hole; 604. a positioning jacket; 6040. an intrados surface; 6041. an upper jacket; 6042. a lower jacket; 6043. an arc-shaped plate; 605. a jacket rotating shaft; 6061. a first opening and closing oil cylinder; 60602. a second opening and closing oil cylinder; 6063. an upper connecting rod; 6064. a lower connecting rod; 6071. a guide cylinder; 6072. a guide circular hole; 6073. a movable oil cylinder;

701. a holding hammer; 702. positioning the mounting plate; 7021. a projecting arm; 703. positioning the telescopic shaft; 704. positioning a telescopic cylinder; 705. positioning a guide shaft; 706. positioning a guide plate; 707. positioning a guide hole; 708. a containing groove;

801. a rolling rod; 802. rolling wheels; 803. a movable mounting block; 804. a guide hole; 805. an internally threaded bore; 806. a guide shaft; 807. a lead screw; 808. a lead screw drive motor; 809. a substrate; 810 boost the cylinder.

Detailed Description

The technical solution of the present invention is described in detail below with reference to the accompanying drawings.

Example 1

The present embodiment provides a folding head, as shown in fig. 1-3, comprising: the device comprises an outer barrel 1, an inner shaft 2, a driving claw 3, a claw driving structure, a turnover rod 4, a reset structure and an opening structure;

wherein, the outer cylinder 1 is provided with a hollow inner cavity, and two ends are opened; the inner shaft 2 is arranged in the outer cylinder 1 and can stretch and move along the self axial direction under the action of external force; the driving claw 3 is rotatably sleeved on the inner shaft 2 and provided with a plurality of driving claws 31, the outer cylinder 1 is provided with a plurality of first strip-shaped through holes 11 (the first strip-shaped through holes 11 can be closed at two ends or open at one end, in the embodiment, one end is open), and the driving claws 31 extend outwards for a certain length from the first strip-shaped through holes 11; the flower claw driving structure is arranged on the inner shaft 2, and drives the flower claws 3 to move when the inner shaft 2 makes telescopic movement; the folding rods 4 are provided with a plurality of rods, one end of each rod is rotatably connected with the driving claw 31, and the other end of each rod is provided with a folding pushing end 41; the reset structure is used for pulling the turnover pushing end 41 to be retracted inwards for resetting; the opening structure is arranged on the outer barrel 1 and the inner shaft 2 and protrudes outwards when the inner shaft 2 extends forwards to push the turnover rod 4 to open; when the inner shaft 2 retracts, the inner shaft is retracted inwards, and the turnover rod 4 is retracted and reset under the action of the reset structure.

When the end part of the rubber skin wound into a cylindrical shape is folded, the folding machine head drives the inner shaft 2 to extend forwards, the opening structure protrudes outwards to push the folding rod 4 to open, the rubber skin at the end part of the outer support is further extended forwards along with the inner shaft 2, the claw driving structure drives the driving claw 3, and then the driving claw 31 pushes the folding rod 4 to push forwards, so that the end part of the rubber skin is folded; after the turnover is finished, the inner shaft 2 is recovered, the opening structure is recovered, the turnover rod 4 is recovered and reset under the action of the reset structure, and is retracted and reset under the driving of the claw driving structure.

The turnover machine head can realize automatic turnover of the end part of the rubber sheet wound into a cylindrical shape, can obviously reduce the labor intensity of workers and improve the production efficiency, and the turnover force of the turnover machine head is driven by a machine, so that the turnover machine head has larger driving force compared with the manual work and better turnover effect.

As shown in fig. 2, the expanding structure comprises a cone sleeve 5 and an expanding piece 6; one end of the cone head sleeve 5 is a cone end 51, the other end is a cylindrical end 52, and the cylindrical end 52 and the inner shaft 2 are rotatably arranged; the folding rods 4 are provided with a plurality of second strip-shaped through holes 12, a plurality of opening pieces 6 are arranged at the positions of the second strip-shaped through holes 12, and the corresponding outer cylinders 1 positioned below the folding rods 4 are provided with the second strip-shaped through holes 12; and one end of the opening piece 6 is rotatably and fixedly arranged on the outer cylinder 1, the other end extends towards the direction of driving the flower claw 3, and the opening piece is provided with a first opening wheel 61 extending towards one side of the outer side surface of the cone sleeve 5 and a second opening wheel 62 arranged along the extending direction of the opening piece 6.

The action principle of the opening structure is as follows: when the inner shaft 2 extends forwards, the first expanding wheel 61 can be contacted with the outer side surface of the conical end 51 and can roll from the outer side surface of the conical end 51 to the outer side surface of the cylindrical end 52 gradually, and at the moment, the second expanding wheel 62 pushes the turnover rod 4 to expand gradually; when the inner shaft 2 retracts, the first expanding wheel 61 can roll from the outer side surface of the cylindrical end 52 to the outer side surface of the conical end 51 and can gradually separate from the outer side surface of the conical end 51, at the moment, the second expanding wheel 62 is gradually reset, and the folding rod 4 is recovered and reset under the action of the resetting structure.

As shown in fig. 3, in the folding machine head of the present embodiment, the inner shaft 2 is rotatably connected to the conical head sleeve 5 in a manner that an inner cavity 50 is provided inside the conical head sleeve 5, an opening of the inner cavity 50 is opened at a cylindrical end 52, a step ring 56 is provided inside the inner cavity 50, a tapered roller bearing 53 is installed on the inner shaft 2 in a sleeved manner, one end of an outer ring of the tapered roller bearing 53 abuts against the step ring 56, and the other end is abutted against an end cap 55 installed at the opening of the inner cavity; one end of the inner ring of the tapered roller bearing 53 is abutted by an end nut 51 screwed to the front end of the inner shaft 2; due to the structural design, the inner shaft 2 and the cone head sleeve 5 can rotate relatively, and the inner shaft 2 can push the cone head sleeve 5 to move back and forth through the tapered roller bearing 53.

Preferably, as shown in fig. 2, an arc-shaped support plate 63 is provided on the outer wall of the expanding member 6. When the opening member 6 is in the initial state, the outer side surface of the arc-shaped support plate 63 is substantially parallel to the outer side surface of the outer cylinder 1; when the opening part 6 is in the convex state, the arc support plate 63 is turned outwards, so that the gap between the opening part 6 and the arc plate 6043 (refer to fig. 6) can be reduced, and the turnover of the turnover rod 4 is easier and the turnover quality is better.

Preferably, the width of the arc-shaped support plate 63 is greater than the width of the splaying member 6 (as shown in fig. 1); when the opening part is in a convex state, the arc-shaped support plates 63 are turned outwards, the gap between the two arc-shaped support plates 63 with larger width is smaller, the turned rubber sheet is conveniently compacted by using a rolling wheel 802 (refer to fig. 11) in the later period, and the flaring appearance can be pressed at the end part.

Preferably, the end of the arc-shaped support plate 63 facing the driving claw 3 is formed with a flange structure (as shown in fig. 2); after the rubber sheet at the end part is turned inwards and wrapped, the steel wire ring can be clamped at the position, and when the rolling wheel 802 is used for rolling subsequently, the position of the steel wire ring can be kept still, so that the rolling is convenient.

The reset structure is an elastic ring which is arranged on the turnover rod 4 and/or the turnover pushing end 41 in a penetrating way. The elastic ring can be separately arranged on the turnover rod 4 in a penetrating way, can also be arranged at the position of the turnover pushing end 41 in a penetrating way, and can also be arranged at two positions.

As shown in fig. 2, in the present embodiment, the two positions are both provided with elastic rings, the folding pushing end 41 is provided with a folding roller 42, the folding roller 42 and the folding pushing end 41 on which the folding roller 42 is installed are provided with a reset through hole 43, and the elastic rings are disposed through the reset through hole 43. (elastic ring not shown in the figure)

As shown in fig. 2 to 3, the claw driving structure includes: a drive sleeve 71, a return sleeve 72 and a return spring 75.

Wherein, the driving sleeve 71 is fixedly arranged on the inner shaft 2; the reset sleeve 72 is rotatably arranged on the inner shaft 2, a reset inner cavity 70 is arranged at one side facing the driving sleeve 71, and a reset annular bulge 73 is arranged at one side facing the cone head sleeve 5; after the reset sleeve 72 is sleeved on the inner shaft 2, a reset annular mounting cavity 74 for mounting a reset spring 75 is formed between the inner wall of the reset inner cavity 70 and the outer wall of the inner shaft 2; the return annular projection 73 passes through the gap between the end cap 55 and the inner shaft 2 and abuts against the inner race of the tapered roller bearing 53; the driving claw 3 is rotatably arranged between the driving sleeve 71 and the reset sleeve 72 directly or through the rotating sleeve 32; the return spring 75 is sleeved on the inner shaft 2, one end of the return spring is installed into the return annular installation cavity 74, and the other end of the return spring abuts against the driving claw 3 or the rotating sleeve 32.

When the inner shaft 2 extends forwards, the driving sleeve 71 pushes the driving claw 3 or the rotating sleeve 32 to move forwards, and further pushes the turnover rod 4 to move forwards, and at the moment, the reset spring 75 pushes the reset sleeve 72 to move forwards; when the inner shaft 2 retracts, the driving sleeve 71 retracts along with the inner shaft 2, and the return spring 75 pushes the driving claw 3 or the rotating sleeve 32 to retreat, so that the turnover rod 4 is pushed to retreat.

Preferably, the shaft further comprises a fixed claw limiting structure, and when the inner shaft 2 extends to the maximum extent (shown in fig. 2), the spacing distance between the claw limiting structure and the driving claw 3 is substantially equal to the spacing distance between the cylindrical end 52 and the outer side surface boundary of the conical end 51 and the contact position of the first expanding wheel 61 and the cylindrical end 52.

That is, from the position shown in fig. 2, the inner shaft 2 starts to retract, the driving sleeve 71 fixedly mounted on the inner shaft 2 retracts synchronously, the driving claws 3 also retract gradually under the action of the return spring 75, the first opening wheel 61 rolls from the outer side surface of the illustrated cylindrical end 52 gradually towards the conical end 51, when the first opening wheel rolls to the boundary point of the cylindrical end 52 and the conical end 51, the driving claws 3 contact the claw limit structure, at this time, the inner shaft 2 retreats continuously, the driving claws 3 cannot retreat any more due to the limit of the claw limit structure, the first opening wheel 61 can retreat continuously to the conical end 51 from the above boundary point, and at this time, the turnover rod 4 retracts and returns gradually under the action of the return structure (i.e., the elastic ring).

The advantage that so set up mainly lies in, when the drive flower claw 3 retreats to with flower claw limit structure butt, open the piece and still be in the evagination state, turn over a gyro wheel 42 and just in time retreat outside the steel wire winding, the steel wire winding is spacing by the flange position of arc backup pad 63 this moment, makes things convenient for subsequent roll extrusion procedure.

In this embodiment, the claw limiting structure is a limiting fixing bolt fixedly arranged on the flange plate opposite to the driving claw 3 (not shown in the figure, and the specific mounting position is the bolt mounting hole position of the flange plate at the left end shown in fig. 2).

Example 2

The present embodiment provides a folding structure, as shown in fig. 4 to 6, including a first folding head 100 and a second folding head 200, which are opposite to each other in terms of head, where the first folding head 100 and the second folding head 200 are the folding heads in embodiment 1.

In this embodiment, the heads of the first folding head 100 and the second folding head 200 can be connected in a matching and inserting manner; further included are a first drive mechanism for driving the first folder head 100 from the tail and a second drive mechanism for driving the second folder head 200 from the tail.

The first driving structure is rotatably connected with the tail part of the outer cylinder 1 of the first folding machine head 100, can push the first folding machine head 100 to move towards the direction close to or far away from the second folding machine head 200 integrally, and can push the inner shaft 2 of the first folding machine head 100 to move telescopically.

The second driving structure is rotatably connected with the tail part of the outer cylinder 1 of the second turnover machine head 200, can drive the outer cylinder 1 of the second turnover machine head 200 to rotate, and can also push the inner shaft 2 of the second turnover machine head 200 to do telescopic motion.

Specifically, as shown in fig. 6, the head of the first folding machine head 100 is fixedly provided with a plug 101, the head of the second folding machine head 200 is fixedly provided with an insertion sleeve 201, and the plug 101 can be inserted into the insertion sleeve 201 to realize insertion installation; a positioning through hole 102 is provided along the axial direction of the plug 101.

As a variant design, it may also be that the head of the first folding machine head 100 is fixedly provided with an insertion sleeve 201, the head of the second folding machine head 200 is fixedly provided with an insertion head 101, and the insertion head 101 can be inserted into the insertion sleeve 201 to realize insertion installation; a positioning through hole 102 is provided along the axial direction of the plug 101.

As shown in fig. 4, the first driving structure includes: a support platform 301, a first bearing housing 302, a first drive cylinder 303, a first drive shaft 304, a first ram (not shown), and a second ram 305.

Wherein, the supporting platform 301 is movably mounted on the fixed base 500 through a guiding structure; the first bearing seat 302 is fixedly arranged on the supporting platform 301, a first bearing is arranged in the first bearing seat 302, and the outer ring of the first bearing is fixedly arranged on the first bearing seat 302; the first driving cylinder 303 is rotatably mounted on the first bearing seat 302, one end of the first driving cylinder is fixedly connected with the outer cylinder 1 of the first turnover machine head 100, the other end of the first driving cylinder is rotatably mounted on the supporting platform 301, and the middle part of the first driving cylinder is rotatably mounted inside the first bearing seat 302 through a first bearing; the first driving shaft 304 passes through the first driving cylinder 303 and is connected with the end part of the inner shaft 2; the first oil cylinder is used for driving the supporting platform 301 to move along the guide structure; the second cylinder 305 is mounted on the support platform 301, and is configured to drive the first driving shaft 304 to move telescopically, so as to drive the inner shaft 2 of the first folding head 100 to move telescopically.

As shown in fig. 4, the second driving structure includes: a second bearing block 401, a second driving cylinder 402, a second driving shaft 403, a driving motor 404, and a third cylinder 405.

Wherein, the second bearing seat 401 is fixedly installed on the fixed base 500, the inside is provided with a second bearing, and the outer ring of the second bearing is fixedly installed on the second bearing seat 401; the second driving cylinder 402 is rotatably mounted on the second bearing block 401, one end of the second driving cylinder is fixedly connected with the outer cylinder 1 of the second turnover machine head 200, the other end of the second driving cylinder is an open end, and the middle part of the second driving cylinder is rotatably mounted inside the second bearing block 401 through a second bearing; the second driving shaft 403 passes through the second driving cylinder 402 and is connected with the end part of the inner shaft 2; the driving motor 404 is used for driving the second driving cylinder 402 to rotate; the third cylinder 405 is used to drive the second driving shaft 403 to move telescopically, thereby driving the inner shaft 2 of the second folding head 200 to move telescopically.

The working process of the turnover structure in the embodiment is as follows:

in an initial state, the heads of the first folding machine head 100 and the second folding machine head 200 are abutted, that is, the plug-in connector 101 arranged at the head of the first folding machine head 100 is inserted into the plug-in sleeve 201 arranged at the head of the second folding machine head 200, and the two are tightly combined;

a plurality of layers of rubber sheets are wound at the connecting position of the first turnover machine head 100 and the second turnover machine head 200 to form a cylinder shape; moving the bead rings sleeved on the first folding machine head 100 and the second folding machine head 200 in advance to the proper position of the cylindrical rubber sleeve, and fixing (by means of a positioning tool, such as a positioning jacket 604 in fig. 9);

starting a second oil cylinder 305 and a third oil cylinder 405, wherein the second oil cylinder 305 drives the inner shaft 2 of the first turnover machine head 100 to extend forwards through a first driving shaft 304, and a conical head sleeve 5 arranged at the end part of the inner shaft 2 extends forwards; the first opening wheel 61 of the opening piece 6 arranged at the position of the second strip through hole 12 is gradually contacted with the outer side surface of the conical end 51 and gradually rolls from the outer side surface of the conical end 51 to the outer side surface of the cylindrical end 52, at the moment, the second opening wheel 62 gradually pushes the turnover rod 4 to open, the turnover roller 42 of the turnover rod 4 is coated with rubber, and at the moment, the turnover roller 42 opens the rubber; with the extension of the inner shaft 2, the driving sleeve 71 fixedly arranged on the inner shaft 2 directly pushes the driving claw 3 or pushes the driving claw 3 to extend with the inner shaft 2 through the rotating sleeve 32; the driving claw 31 of the driving claw 3 pushes the folding rod 4 to extend forwards, and then the rubber sheet coated on the outer side of the folding roller 42 is folded to cover the steel wire ring; the process of driving the second turnover machine head 200 to act by the third oil cylinder 405 is the same as the above;

after the turnover is finished, the second oil cylinder 305 and the third oil cylinder 405 are started to move reversely at the same time, the inner shaft 2 is recovered, the driving sleeve 71 fixedly arranged on the inner shaft 2 is recovered along with the inner shaft 2, the driving claw 3 or the rotating sleeve 32 is pushed by the reset spring 75 to be recovered until the driving claw 3 abuts against the claw limiting structure, and at the moment, the reverse movement of the second oil cylinder 305 and the third oil cylinder 405 is stopped;

the positioning tool is moved away, the driving motor 404 is started, the driving motor 404 drives the outer cylinder 1 of the second turnover machine head 200 to rotate through the second driving cylinder 402 which is rotatably arranged on the second bearing seat 401, and because the first turnover machine head 100 is abutted to the head of the second turnover machine head 200 and the outer cylinder 1 of the first turnover machine head 100 is rotatably arranged on the fixed machine base 500 through the first bearing seat 302, the outer cylinder 1 of the second turnover machine head 200 can be driven to rotate, the outer cylinder 1 of the first turnover machine head 100 can be driven to rotate, the turned-over rubber skin synchronously rotates at the connecting position of the first turnover machine head 100 and the second turnover machine head 200, and at the moment, a compaction tool can be adopted to compact the side edge of the turned-over rubber skin; adding a layer of rubber skin which can be wound around the middle part of the cylindrical rubber tire blank and compacting again; after full compaction, the driving motor 404 is turned off, the green tire stops rotating, and the production is basically finished;

starting the second oil cylinder 305 and the third oil cylinder 405 to continue to move reversely at the same time, gradually rolling the first expanding wheel 61 from the junction of the cylindrical end 52 and the conical end 51 to the conical end 51 and gradually separating from the conical end 51, gradually returning the second expanding wheel 62 at the moment, gradually contracting the turnover rod 4 for returning, gradually compressing the return spring until the turnover rod 4 is completely returned, and stopping the reverse movement of the second oil cylinder 305 and the third oil cylinder 405;

and starting the first oil cylinder to drive the supporting platform 301 to move towards the direction far away from the green tire, so as to drive the first turnover machine head 100 to move, wherein the first turnover machine head 100 is separated from the second turnover machine head 200, and at the moment, the green tire can be taken down from the machine head, so that the production is completed.

Example 3

The present embodiment provides a folding forming machine, as shown in fig. 7, including a fixed base 500, and a folding structure mounted on the fixed base 500, wherein the folding structure is the folding structure in embodiment 2.

As shown in fig. 7-10, further comprising a bead ring positioning device, the bead ring positioning device comprising: mounting platform 601, platform pushing device, mounting seat 602, movable mounting post 603 and positioning jacket 604.

Wherein, the mounting platform 601 is slidably mounted on the fixed base 500; the platform pushing device is used for pushing the mounting platform 601 to move towards the direction close to or far away from the turnover structure; the mounting seats 602 are a pair and are oppositely mounted on the mounting platform 601; the movable mounting columns 603 are a pair and can be installed between the two mounting seats 602 through a movable mounting structure in a manner of opening and closing left and right relatively; a pair of positioning holders 604 is attached to each movable mounting post 603, and can be mounted to be opened and closed up and down by an opening and closing drive mechanism.

In an initial state, the positioning jacket 604 is in an open state, the platform pushing device pushes the mounting platform 601 to move towards a direction close to the turnover structure, after the mounting platform reaches a target position, the positioning jacket 604 is vertically matched and clamped at the periphery of the turnover structure, the two movable mounting columns 603 are driven by the movable mounting structure to be separated towards two sides to a certain width, at the moment, the steel wire ring can be placed at a specific position of the positioning jacket 604, and after the turnover structure is used for turning over the rubber skin, the steel wire ring is wrapped in the rubber skin; after the steel wire ring is positioned, the two movable mounting columns 603 move towards the middle for a certain distance under the driving of the movable mounting structure, then the positioning jacket 604 opens up and down, and the platform pushing device drives the mounting platform 601 to move towards the direction away from the turnover structure to the initial position.

The folding forming machine of the embodiment adopts the steel wire ring positioning device, the positioning jacket 604 moves stably and accurately, and the whole structure has strong stability and good durability.

The platform pushing device comprises at least one platform pushing oil cylinder. In this embodiment, two pushing cylinders are arranged in parallel.

The positioning jacket 604 comprises an upper jacket 6041 and a lower jacket 6042 which can be opened and closed up and down, the upper jacket 6041 and the lower jacket 6042 both have a first section and a tail end, and the middle parts of the upper jacket 6041 and the lower jacket 6042 are rotatably arranged on the movable mounting column 603 through a jacket rotating shaft 605; the upper jacket 6041 and the lower jacket 6042 have an inner arc surface 6040 for clamping and an arc plate 6043 formed on one side (the arc plate 6043 has the functions of limiting the placing position of the steel wire ring and facilitating the turnover structure to turn over the rubber skin at the end part position to the outer side of the arc plate 6043); the opening and closing driving structure drives the tail ends of the upper clamping sleeve 6041 and the lower clamping sleeve 6042 to further drive the first sections of the upper clamping sleeve 6041 and the lower clamping sleeve 6042 to open and close up and down.

The movable mounting column 603 is provided with a vertical mounting hole 6030, and the middle parts of the upper clamp sleeve 6041 and the lower clamp sleeve 6042 are rotatably arranged in the vertical mounting hole 6030 in a penetrating way through the clamp sleeve rotating shaft 605.

The upper clamping sleeve 6041 and the lower clamping sleeve 6042 can be detachably connected, so that the upper clamping sleeve 6041 with different specifications can be conveniently replaced to adapt to the turnover structures with different specifications.

The drive structure that opens and shuts includes: two first opening and closing oil cylinders 6061 are respectively arranged above the movable mounting column 603, and the driving ends are respectively connected with the tail end of an upper jacket 6041 through an upper connecting rod 6063; two second opening and closing oil cylinders 6062 are respectively arranged below the movable mounting column 603, and the driving ends of the two second opening and closing oil cylinders 6062 are respectively connected with the tail end of the lower clamping sleeve 6042 through a lower connecting rod 6064.

The movable mounting structure includes: two guide cylinders 6071, two ends of which are respectively fixedly installed on the two installation bases 602; guide round holes 6072 are formed in the two movable mounting columns 603 and used for allowing the guide cylinders 6071 to penetrate through; and the movable oil cylinder 6073 is fixedly arranged on the mounting seat 602, and the driving end is fixedly connected with the movable mounting column 603.

As shown in fig. 10 and 12, a positioning and holding structure for maintaining a spaced distance between the two pairs of positioning jackets 604 is further included. The positioning and holding structure includes: a holding hammer 701, a positioning mounting plate 702, a positioning telescopic shaft 703, a positioning guide shaft 705, a positioning guide plate 706 and a positioning telescopic cylinder 704; two holding hammers 701 are provided for holding a distance between the two upper jackets 6041 and a distance between the two lower jackets 6042; the positioning mounting plate 702 has two projecting arms 7021 on which the two holding hammers 701 are respectively mounted; one end of a positioning telescopic shaft 703 is connected with the positioning mounting plate 702, and the other end is connected with a positioning telescopic cylinder 704; the positioning guide shaft 705 is arranged in parallel with the positioning telescopic shaft 703, and one end of the positioning guide shaft is connected with the positioning mounting plate 702; the positioning guide plate 706 is fixedly installed on the installation platform 601 and is provided with two positioning guide holes 707 for the positioning telescopic shaft 703 and the positioning guide shaft 705 to pass through respectively; a positioning telescopic cylinder 704 is mounted on the mounting platform 601.

The mounting platform 601 is provided with a holding groove 708 at a position opposite to the positioning mounting plate 702.

The platform pushing device pushes the mounting platform 601 to move towards the direction close to the turnover structure to a target position, the positioning jackets 604 are vertically matched and clamped on the periphery of the turnover structure, the two movable mounting columns 603 are driven by the movable mounting structure to be separated towards two sides to a certain width, the positioning telescopic cylinder 704 drives the positioning mounting plate 702 through the positioning telescopic shaft 703 under the guiding action of the positioning guide shaft 705 and the positioning guide plate 706, and then the holding hammer 701 is driven to move to between the two positioning jackets 604 and abut against between the two positioning jackets 604; after the folding is completed, the positioning telescopic cylinder 704 contracts to drive the holding hammer 701 to retract and reset to the position of the accommodating groove 708.

As shown in fig. 8, 11 and 13, further comprising a rolling device comprising: the device comprises a rolling rod 801, a rolling wheel 802, a movable mounting block 803, a guide hole 804, an internal thread hole 805, a guide shaft 806, a lead screw 807, a lead screw driving motor 808, a base plate 809 and a pushing and lifting cylinder 810; wherein, the number of the rolling rods 801 is two; the two rolling wheels 802 are respectively and rotatably arranged at one end of the two rolling rods 801; the number of the movable mounting blocks 803 is two, and the tops of the movable mounting blocks are respectively rotatably connected with one end of the rolling rod 801; the guide holes 804 are oppositely arranged on the two movable mounting blocks 803; the internal thread hole 805 is oppositely arranged on the two movable mounting blocks 803; the guide shaft 806 passes through the two guide holes 804 and is fixedly mounted on the fixed base 500; the lead screw 807 is rotatably mounted on the fixed base 500 after passing through the two internal threaded holes 805; the screw rod driving motor 808 is fixedly arranged on the fixed base 500 and is used for driving the screw rod 807 to rotate; the substrate 809 is fixedly mounted at the bottom of the movable mounting block 803; the two pushing-up air cylinders 810 are respectively arranged on the two base plates 809, and the top parts of the two rolling rods 801 are respectively pressed below the position between the movable installation block 803 and the rolling wheels 802.

After the turning is finished, the outer cylinders 1 of the first turning structure 100 and the second turning structure 200 rotate rapidly in an external force driving mode, at this time, the top of the pushing and lifting cylinder 810 pushes the rolling rod 801 to incline, so as to push the rolling wheel 802 to abut against a turned green tire, the green tire rotates to drive the rolling wheel 802 to rotate, the lead screw 807 rotates under the driving of the lead screw driving motor 808, so as to drive the movable mounting block 803 to move from two sides to the middle, and the rolling rod 801 drives the rolling wheel 802 to move to the middle, so that the rolling wheel 802 can gradually and uniformly press the green tire.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.