阅读说明：本技术 一种用于吹瓶机的拉伸封口联动装置 (Stretching and sealing linkage device for bottle blowing machine ) 是由 董腾中 吴书朋 张晓飞 于荣鹏 于 2021-07-09 设计创作，主要内容包括：本发明公开了一种用于吹瓶机的拉伸封口联动装置,包括支架、沿第一方向延伸的第一导轨、拉伸机构、封口机构；拉伸机构包括可滑动的设于第一导轨上的第一滑块、设于第一滑块上的滚子、连接在第一滑块上的拉伸杆、设于支架上的驱动单元；封口机构包括设于支架上的封口缸、封口轴、可滑动的设于第一导轨上的且用于连接封口轴的第二滑块、沿第二方向延伸的第二导轨、可滑动的设于第二导轨上的第三滑块、两端分别与第三滑块和第二滑块转动连接的第一连杆；第三滑块上设有用于配合滚子滚动的凸轮曲线,第一滑块相对第三滑块滑动时,滚子始终抵设于凸轮曲线上。本发明一种用于吹瓶机的拉伸封口联动装置,运动精度较高,运动稳定性较好。(The invention discloses a stretching and sealing linkage device for a bottle blowing machine, which comprises a bracket, a first guide rail, a stretching mechanism and a sealing mechanism, wherein the first guide rail extends along a first direction; the stretching mechanism comprises a first sliding block arranged on the first guide rail in a sliding manner, a roller arranged on the first sliding block, a stretching rod connected to the first sliding block and a driving unit arranged on the bracket; the sealing mechanism comprises a sealing cylinder arranged on the support, a sealing shaft, a second sliding block which is arranged on the first guide rail in a sliding manner and is used for connecting the sealing shaft, a second guide rail extending along the second direction, a third sliding block arranged on the second guide rail in a sliding manner, and a first connecting rod of which two ends are respectively in rotating connection with the third sliding block and the second sliding block; the third slider is provided with a cam curve used for matching with the roller to roll, and when the first slider slides relative to the third slider, the roller always supports against the cam curve. The stretching and sealing linkage device for the bottle blowing machine is high in movement precision and good in movement stability.)

1. The utility model provides a tensile aggregate unit that seals for bottle blowing machine, includes the support, locates first guide rail, tension mechanism on the support and seal the mechanism, first guide rail extends its characterized in that along first direction:

the stretching mechanism comprises a first sliding block which is arranged on the first guide rail in a sliding manner, a roller which is arranged on the first sliding block and can rotate around the axis direction of the roller, a stretching rod which is connected to the first sliding block, and a driving unit which is arranged on the bracket and is used for driving the first sliding block to slide;

the sealing mechanism comprises a sealing cylinder arranged on the support, a sealing shaft capable of moving along a first direction and penetrating through the sealing cylinder, a second sliding block which is slidably arranged on the first guide rail and is used for connecting the sealing shaft, a second guide rail which is arranged on the support and extends along a second direction, a third sliding block which is slidably arranged on the second guide rail, and a first connecting rod of which two ends are respectively rotatably connected with the third sliding block and the second sliding block;

the third sliding block is provided with a cam curve used for being matched with the roller to roll, and the cam curve comprises a curve section which is connected in sequence along a first direction and obliquely extends from top to bottom and a straight line section which is parallel to the first direction;

when the roller rotates in the curve section, the second sliding block is driven to slide along a first direction through the third sliding block and the first connecting rod;

when the first sliding block slides relative to the third sliding block, the roller always abuts against the cam curve.

2. The stretch-closure linkage for a bottle blowing machine of claim 1, wherein: the linkage has an initial position, a sealing position, and a tension position;

when the driving unit drives the first sliding block to slide along a first direction, the roller rotates in the curve section and drives the third sliding block to slide along a second direction, the first connecting rod drives the second sliding block to drive the sealing shaft to move along the first direction, and the linkage device is switched from the initial position to the sealing position;

when the driving unit continuously drives the first sliding block to slide along the first direction, the roller rotates in the straight line section, the second sliding block and the third sliding block are kept static, and the first sliding block drives the stretching rod to continuously move along the first direction, so that the linkage device is switched from the sealing position to the stretching position.

3. The stretch-closure linkage for a bottle blowing machine of claim 1, wherein: the first direction extends from top to bottom along the vertical direction, and the second direction extends along the horizontal direction; the rotation center line of the roller extends along the horizontal direction, is parallel to the rotation center lines at the two ends of the first connecting rod, and is vertical to the second direction.

4. The stretch-closure linkage for a bottle blowing machine of claim 3, wherein: the second direction extends left and right along the horizontal direction;

the curved section extends obliquely along the upper right-to-lower left direction, and the upper end of the first connecting rod is connected to the left side of the bottom of the third slider and extends obliquely along the upper left-to-lower right direction;

or the curved section extends obliquely in the upper left to lower right direction, and the upper end of the first link is connected to the right side of the bottom of the third slider and extends obliquely in the upper right to lower left direction.

5. The stretch-closure linkage for a bottle blowing machine of claim 4, wherein: the rotation center line of the roller extends forwards and backwards along the horizontal direction, and the stretching rod, the first connecting rod and the third sliding block are sequentially arranged along the rotation center line of the roller.

6. The stretch-closure linkage for a bottle blowing machine of claim 3, wherein: the second direction extends forwards and backwards along the horizontal direction, and the rotating center line of the roller extends leftwards and rightwards along the horizontal direction;

the curve section extends obliquely along the front-up-to-back-down direction, the upper end of the first connecting rod is connected to the rear side of the bottom of the third sliding block, and the first connecting rod extends obliquely along the back-up-to-front-down direction;

or the curve section obliquely extends along the upper-rear-to-lower-front direction, and the upper end of the first connecting rod is connected to the front side of the bottom of the third sliding block and obliquely extends along the upper-front-to-lower-rear direction.

7. The stretch-closure linkage for a bottle blowing machine of claim 1, wherein: the support comprises a body, a first guide block and a second guide block, wherein the first guide block and the second guide block are arranged on the body at intervals along a first direction, two second guide rails are arranged in the first guide block and the second guide block respectively, and the third slide block can be arranged between the first guide block and the second guide block in a sliding mode along a second direction.

8. The stretch-closure linkage for a bottle blowing machine of claim 7, wherein: the first guide block, the first slide block, the second guide block and the second slide block are sequentially arranged along a first direction, a slotted hole used for being penetrated by the third slide block along the first direction is formed in the first slide block, and the roller is arranged in the slotted hole.

9. The stretch-closure linkage for a bottle blowing machine of claim 1, wherein: the stretching rod sequentially penetrates through the second sliding block, the sealing shaft and the sealing cylinder along a first direction.

10. The stretch-closure linkage for a bottle blowing machine of claim 1, wherein: the cam curve is a curved groove or a curved flange.

Technical Field

The invention relates to the technical field of bottle blowing, in particular to a stretching and sealing linkage device for a bottle blowing machine.

Background

With the development of bottle blowing machines towards high speed and low noise, the requirements on the motion precision of each mechanism of the bottle blowing machine are higher and higher. The lifting motion of the sealing cylinder and the stretching rod needs to be continuously completed in the process of executing a bottle blowing motion, the lifting motion of the sealing cylinder of the existing equipment is powered by an air cylinder or a cam, the lifting motion of the stretching rod is powered by an air cylinder or a servo motor, the two motions are different, the structure is complex, the installation precision guarantee is poor, and certain influence is caused on the high-speed stable operation of the equipment.

The linkage between bottle blank sealing and stretching can be realized by the conventional device. In the device, after sealing, the roller and the slide block can be separated from each other, the slide block continues to move downwards to match with stretching, so that after stretching and bottle blowing are completed, the slide block can move upwards and impact the roller, and the movement precision and the movement stability are low; and the equipment has more parts and higher debugging difficulty.

Disclosure of Invention

The invention aims to provide a stretching and sealing linkage device for a bottle blowing machine, which has the advantages of fewer equipment parts, lower debugging difficulty, higher motion precision and better motion stability.

In order to achieve the purpose, the invention adopts the technical scheme that:

a stretching and sealing linkage device for a bottle blowing machine comprises a bracket, a first guide rail arranged on the bracket, a stretching mechanism and a sealing mechanism, wherein the first guide rail extends along a first direction,

the stretching mechanism comprises a first sliding block which is arranged on the first guide rail in a sliding manner, a roller which is arranged on the first sliding block and can rotate around the axis direction of the roller, a stretching rod which is connected to the first sliding block, and a driving unit which is arranged on the bracket and is used for driving the first sliding block to slide;

the sealing mechanism comprises a sealing cylinder arranged on the support, a sealing shaft capable of moving along a first direction and penetrating through the sealing cylinder, a second sliding block which is slidably arranged on the first guide rail and is used for connecting the sealing shaft, a second guide rail which is arranged on the support and extends along a second direction, a third sliding block which is slidably arranged on the second guide rail, and a first connecting rod of which two ends are respectively rotatably connected with the third sliding block and the second sliding block;

the first sliding block and the second sliding block are respectively positioned at two ends of the third sliding block along the first direction;

the third sliding block is provided with a cam curve used for being matched with the roller to roll, and the cam curve comprises a curve section which is connected in sequence along a first direction and obliquely extends from top to bottom and a straight line section which is parallel to the first direction;

when the roller rotates in the curve section, the second sliding block is driven to slide along a first direction through the third sliding block and the first connecting rod;

when the first sliding block slides relative to the third sliding block, the roller always abuts against the cam curve.

Preferably, the linkage has an initial position, a sealing position and a tension position;

when the driving unit drives the first sliding block to slide along a first direction, the roller rotates in the curve section and drives the third sliding block to slide along a second direction, the first connecting rod drives the second sliding block to drive the sealing shaft to move along the first direction, and the linkage device is switched from the initial position to the sealing position;

when the driving unit continuously drives the first sliding block to slide along the first direction, the roller rotates in the straight line section, the second sliding block and the third sliding block are kept static, and the first sliding block drives the stretching rod to continuously move along the first direction, so that the linkage device is switched from the sealing position to the stretching position.

Preferably, the first direction extends from top to bottom along a vertical direction, and the second direction extends along a horizontal direction; the rotation center line of the roller extends along the horizontal direction, is parallel to the rotation center lines at the two ends of the first connecting rod, and is vertical to the second direction.

More preferably, the second direction extends left and right in the horizontal direction;

the curved section extends obliquely along the upper right-to-lower left direction, and the upper end of the first connecting rod is connected to the left side of the bottom of the third slider and extends obliquely along the upper left-to-lower right direction;

or the curved section extends obliquely in the upper left to lower right direction, and the upper end of the first link is connected to the right side of the bottom of the third slider and extends obliquely in the upper right to lower left direction.

Still further preferably, a rotation center line of the roller extends forward and backward in a horizontal direction, and the stretching rod, the first link, and the third slider are arranged in order in the rotation center line direction of the roller.

More preferably, the second direction extends forward and backward in the horizontal direction, and the rotation center line of the roller extends left and right in the horizontal direction;

the curve section extends obliquely along the front-up-to-back-down direction, the upper end of the first connecting rod is connected to the rear side of the bottom of the third sliding block, and the first connecting rod extends obliquely along the back-up-to-front-down direction;

or the curve section obliquely extends along the upper-rear-to-lower-front direction, and the upper end of the first connecting rod is connected to the front side of the bottom of the third sliding block and obliquely extends along the upper-front-to-lower-rear direction.

Preferably, the support includes the body, locate on the body and along first direction interval arrangement's first guide block and second guide block, the second guide rail has two, locates respectively in first guide block and the second guide block, third slider slidable along the second direction locates between first guide block and the second guide block.

More preferably, the first guide block, the first slider, the second guide block and the second slider are sequentially arranged along a first direction, a slot hole for being penetrated by the third slider along the first direction is formed in the first slider, and the roller is arranged in the slot hole.

Preferably, the stretching rod passes through the second slider, the sealing shaft and the sealing cylinder in sequence in a first direction.

Preferably, the cam curve is a curved groove or a curved flange.

Preferably, the driving unit is a servo motor or a driving cylinder.

Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages: the stretching and sealing linkage device for the bottle blowing machine has fewer equipment parts and lower debugging difficulty; the third slide block and the second slide block slide in linkage through the sliding of the first slide block so as to respectively realize stretching and sealing; by setting the shape of the cam curve, whether the first sliding block slides in linkage with the third sliding block or not is realized, so that the mutual interference of the stretching motion and the sealing motion is avoided; when the first sliding block slides relative to the third sliding block, the roller always abuts against the cam curve whether the third sliding block is in a motion state or a static state, so that the motion precision is high, and the motion stability is good.

Drawings

FIG. 1 is an isometric view of a stretch seal linkage according to an embodiment of the present invention;

FIG. 2 is a first elevation view of FIG. 1;

FIG. 3 is a left side view of FIG. 1 (with the linkage in the initial position);

FIG. 4 is a second front view of FIG. 1 (with the linkage in the closed position);

FIG. 5 is a third elevation view of FIG. 1 (with the linkage in a stretched position);

FIG. 6 is an enlarged schematic view (top view) of a first slide;

fig. 7 is an enlarged schematic view (front view) of the third slider.

Wherein: 1. a support; 101. a first guide block; 102. a second guide block; 2. a first guide rail; 3. a first slider; 31. a slot; 4. a roller; 5. a stretch rod; 6. a drive unit; 7. sealing the cylinder; 8. a seal shaft; 9. a second slider; 91. a second link; 10. a second guide rail; 11. a third slider; 12. a first link; 13. a cam curve; 131. a curve segment; 132. a straight line segment.

Detailed Description

The technical solution of the present invention is further explained below with reference to the specific embodiments and the accompanying drawings.

Referring to fig. 1 to 7, the embodiment provides a stretching and sealing linkage device for a bottle blowing machine, which includes a support 1, and a stretching mechanism and a sealing mechanism disposed on the support 1. The stretching mechanism is used for stretching the bottle blank during bottle blowing, and the sealing mechanism is used for sealing the bottle blank during bottle blowing.

Referring to fig. 1-2, the bracket 1 includes a body, and first and second guide blocks 101 and 102 disposed on the body and spaced apart from each other in a first direction. The body is provided with a first guide rail 2 extending along a first direction, and the lower surface of the first guide block 101 and the upper surface of the second guide block 102 are respectively provided with a second guide rail 10 extending along a second direction.

In this embodiment, the first direction is a vertical direction from top to bottom in fig. 2, and the second direction is a left-right direction in fig. 2. The first guide rail 2 is a guide convex rail, and the two second guide rails 10 are guide grooves. The first guide block 101 is located above the second guide block 102, the upper end of the first guide rail 2 is located below the first guide block 101, and the lower end of the first guide rail 2 is located below the second guide block 102, i.e. the first guide rail 2 penetrates the second guide block 102 downwards.

The stretching mechanism comprises a first slide block 3 which is arranged on the first guide rail 2 and can slide along a first direction, a roller 4 which is arranged on the first slide block 3 and can rotate around the axis line direction of the roller, a stretching rod 5 connected with the first slide block 3, and a driving unit 6 which is arranged on the bracket 1 and is used for driving the first slide block 3 to slide.

Referring to fig. 1-2 and 6, the first slide 3 is located between the first guide block 101 and the second guide block 102; a slotted hole 31 penetrating along a first direction is formed in the first sliding block 3, and the roller 4 is arranged in the slotted hole 31; the upper end of the stretching rod 5 is connected to the first slide block 3; the driving unit 6 is arranged at the top of the bracket 1 and is positioned above the first guide block 101, and the driving unit 6 is a servo motor or a driving cylinder.

The sealing mechanism comprises a sealing cylinder 7 arranged on the support 1, a sealing shaft 8 which can move along the first direction and is arranged in the sealing cylinder 7 in a penetrating way, and a second sliding block 9 which can slide along the first direction, is arranged on the first guide rail 2 and is used for connecting the sealing shaft 8.

Referring to fig. 1-2, the second slide block 9 is positioned below the second guide block 102, and the sealing cylinder 7 is positioned below the second slide block 9; the upper end of the sealing shaft 8 upwards penetrates through the sealing cylinder 7, the sealing shaft 8 is connected with the second sliding block 9 through the upper end of the sealing shaft, the lower end of the sealing shaft 8 downwards penetrates through the sealing cylinder 7, the sealing shaft 8 seals the bottle blank through the lower end of the sealing shaft, and the sealing shaft 8 is driven to synchronously slide up and down through the up-and-down sliding of the second sliding block 9. The stretching rod 5 sequentially passes through the second slide block 9, the sealing shaft 8 and the sealing cylinder 7 along the first direction, and is used for stretching the bottle blank.

The sealing mechanism further comprises a third sliding block 11 which can slide along the second direction and is arranged on the second guide rail 10, and a first connecting rod 12 of which two ends are respectively connected with the third sliding block 11 and the second sliding block 9 in a rotating manner.

Referring to fig. 1-2, the third sliding block 11 is inserted into the slot 31 of the first sliding block 3 along the first direction, and the third sliding block 11 is limited and protected in the left-right direction through the slot 31; the upper end of the third sliding block 11 is inserted into the guide groove on the lower surface of the first guide block 101, and the lower end of the third sliding block 11 is inserted into the guide groove on the upper surface of the second guide block 102.

The first guide block 101, the first slide block 3, the second guide block 102 and the second slide block 9 are sequentially arranged from top to bottom; the upper end of the first connecting rod 12 is rotatably connected to the third slide block 11, and the lower end of the first connecting rod 12 is rotatably connected to the second slide block 9.

The rotation center line of the roller 4 extends in the horizontal direction and is parallel to the rotation center lines of both ends of the first link 12, and is perpendicular to the second direction, i.e., the front-rear direction in fig. 2. Referring to fig. 1, the stretching rod 5, the first link 12, and the third slider 11 are arranged in this order along the rotation center line of the roller 4.

Referring to fig. 1-2 and 7, the third slider 11 is provided with a cam curve 13 for cooperating with the roller 4 to roll, and the cam curve 13 includes a curve section 131 extending obliquely from top to bottom and a straight section 132 parallel to the first direction, which are sequentially connected along the first direction.

In the present embodiment, referring to fig. 7, the curved section 131 extends obliquely in the top-right-to-bottom-left direction, and the upper end of the first link 12 is connected to the left side of the bottom of the third slider 11 and extends obliquely in the top-left-to-bottom-right direction; the third slider 11 is L-shaped as a whole. Referring to fig. 2, a second connecting rod 91 is fixedly arranged on the second slider 9, the second connecting rod 91 extends obliquely along the left-lower-right-upper direction, and the right lower end of the first connecting rod 12 is rotatably connected with the right upper end of the second connecting rod 91.

In embodiment 2, the curved section 131 extends obliquely in the top-left-to-bottom-right direction, and the upper end of the first link 12 is connected to the right side of the bottom of the third slider 11 and extends obliquely in the top-right-to-bottom-left direction.

In embodiment 3, the second direction extends forward and backward in the horizontal direction, and the rotation center line of the roller 4 extends leftward and rightward in the horizontal direction; the curved section 131 extends obliquely in the front-up-to-back-down direction, and the upper end of the first link 12 is connected to the rear side of the bottom of the third slider 11 and extends obliquely in the back-up-to-front-down direction.

In embodiment 4, the second direction extends forward and backward in the horizontal direction, and the rotation center line of the roller 4 extends leftward and rightward in the horizontal direction; the curved section 131 extends obliquely in the back-up-to-front-down direction, and the upper end of the first link 12 is connected to the front side of the bottom of the third slider 11 and extends obliquely in the front-up-to-back-down direction.

The cam curve 13 is a curved groove or a curved flange, and in this embodiment, the cam curve 13 is a curved groove in which only one roller 4 is disposed. In another embodiment, the cam curve 13 is a curved flange, and two rollers 4 are disposed on two sides of the curved flange respectively.

The third slide block 11 and the second slide block 9 slide in linkage with the sliding of the first slide block 3 to respectively realize stretching and sealing; by setting the shape of the cam curve 13, whether the first sliding block 3 slides in linkage with the third sliding block 11 is realized, so that the mutual interference of the stretching movement and the sealing movement is avoided; when the first sliding block 3 slides relative to the third sliding block 11, no matter the third sliding block 11 is in a moving state or a static state, the roller 4 is always abutted to the cam curve 13, so that the movement precision is high, and the movement stability is good.

In this embodiment, the stretching and sealing linkage device for a bottle blowing machine has an initial position (fig. 3), a sealing position (fig. 4) and a stretching position (fig. 5);

in fig. 3, the first slider 3 is at the upper starting point, and the second slider 9 is also at the upper starting point;

in fig. 4, the second slider 9 is at the lower end point;

in fig. 5, the second slider 9 is at the lower end terminus, as is the first slider 3.

During bottle blowing, the driving unit 6 drives the first slide block 3 to move downwards, the roller 4 rotates in the curve segment 131 and moves downwards to drive the third slide block 11 to move rightwards (rightwards in fig. 2), the third slide block 11 drives the second slide block 9 to move downwards through the first connecting rod 12, the second slide block 9 drives the sealing shaft 8 to move downwards to seal the bottle blank, and when the second slide block 9 moves downwards to the lower end terminal point (namely the roller 4 is about to be separated from the curve segment 131 downwards), the linkage device is switched from the initial position to the sealing position;

the driving unit 6 continuously drives the first slide block 3 to move downwards, at this time, the roller 4 rotates in the straight line segment 132 and moves downwards, the third slide block 11 keeps still, the first connecting rod 12 and the second slide block 9 also keep still, the first slide block 3 drives the stretching rod 5 to continuously move downwards to stretch the bottle blank, and when the first slide block 3 moves downwards to the lower end terminal point, the linkage device is switched from the sealing position to the stretching position;

after bottle blowing is finished, the driving unit 6 drives the first slide block 3 to ascend, only the first slide block 3 and the stretching rod 5 move upwards due to the fact that the roller 4 moves upwards in the straight line section 132, the second slide block 9 and the third slide block 11 are kept static, and when the roller 4 moves upwards to the top end of the straight line section 132, the linkage device is switched to a sealing position from a stretching position; the driving unit 6 continues to drive the first slider 3 to ascend, and drives the third slider 11 to move leftwards (leftwards in fig. 2) due to the fact that the roller 4 rotates in the curve segment 131 and moves upwards, the third slider 11 drives the second slider 9 to move upwards through the first connecting rod 12, when the second slider 9 moves upwards to the upper end starting point (namely, when the roller 4 moves upwards to the top end of the curve segment 131), the first slider 3 also moves upwards to the upper end starting point, and the linkage device is switched to the initial position from the sealing position.

The above-mentioned embodiments are merely illustrative of the technical idea and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered in the scope of the present invention.