阅读说明：本技术 一种铜管自动扩缩口装置 (Automatic throat device that expands of copper pipe ) 是由 曹建平 张毅 何州平 李红 杨广明 于 2019-10-09 设计创作，主要内容包括：本申请提供了一种铜管自动扩缩口装置,包括：料仓组件、机架组件以及设置在机架组件上的自动扩缩口机构,自动扩缩口机构包括直线送料组件、管端入料组件、下夹模组件、上夹模组件以及扩缩口组件,其中,料仓组件靠近机架组件设置；直线送料组件与料仓组件和管端入料组件连接,以接收料仓组件供应的铜管并将铜管输送给管端入料组件,铜管经由管端入料组件进入下夹模组件中,上夹模组件设置在下夹模组件上方,并且下夹模组件与上夹模组件能够将铜管固定夹持住,扩缩口组件用于对铜管进行扩缩口。通过该自动扩缩口装置,操作简单,只需员工操作时添加物料到料仓组件,无需人手工送料,所以完全杜绝了员工手被夹伤的风险。(The application provides an automatic mouth device that contracts that expands of copper pipe includes: the automatic necking mechanism comprises a linear feeding assembly, a pipe end feeding assembly, a lower die clamping assembly, an upper die clamping assembly and a necking mechanism, wherein the bin assembly is arranged close to the rack assembly; the straight line feeding assembly is connected with the bin assembly and the pipe end feeding assembly to receive a copper pipe supplied by the bin assembly and convey the copper pipe to the pipe end feeding assembly, the copper pipe enters the lower clamping die assembly through the pipe end feeding assembly, the upper clamping die assembly is arranged above the lower clamping die assembly, the lower clamping die assembly and the upper clamping die assembly can fixedly clamp the copper pipe, and the necking-expanding assembly is used for necking the copper pipe. Through this automatic throat device expands, easy operation, only need the staff to add the material to feed bin subassembly when operating, need not the manual pay-off of people, so stopped staff's hand completely and pressed from both sides the risk of hindering.)

1. An automatic copper pipe necking device is characterized by comprising a stock bin assembly, a rack assembly and an automatic necking mechanism arranged on the rack assembly, wherein the automatic necking mechanism comprises a linear feeding assembly, a pipe end feeding assembly, a lower clamping die assembly, an upper clamping die assembly and a necking assembly, and the stock bin assembly is arranged close to the rack assembly; the linear feeding assembly is connected with the bin assembly and the pipe end feeding assembly to receive a copper pipe supplied by the bin assembly and convey the copper pipe to the pipe end feeding assembly, the copper pipe enters the lower clamping die assembly through the pipe end feeding assembly, the upper clamping die assembly is arranged above the lower clamping die assembly, the lower clamping die assembly and the upper clamping die assembly can fixedly clamp the copper pipe, and the necking assembly is used for necking the copper pipe.

2. The automatic copper pipe expanding and contracting device according to claim 1, wherein the stock bin assembly comprises a stock bin bottom frame and a stock bin, the stock bin is arranged on the stock bin bottom frame, and the stock bin comprises:

the copper pipe receiving plate is used for receiving a plurality of copper pipes to be expanded and contracted poured by an operator;

the bin material pusher bottom plate is obliquely arranged inside the bin and is connected with the copper pipe receiving plate;

the material pushing plate sliding rail is arranged on the bottom plate of the stock bin material pusher;

the bin pushing plate is arranged on the pushing plate slide rail and can slide along the pushing plate slide rail under the actuation of the pushing plate cylinder;

at least one layer of temporary copper pipe storage plate which is fixedly arranged on the bottom plate of the stock bin pusher so as to buffer the copper pipe, and the next layer of stock bin pusher pushes the copper pipe to move upwards along the direction of the pusher slide rail; and

and the bin discharging plate is obliquely arranged at the top end of the bottom plate of the bin pusher.

3. The automatic copper pipe expanding and contracting device according to claim 2, wherein the stock bin further comprises:

a bin size adjusting plate disposed on an inner wall of the bin in a vertical direction.

4. The automatic copper pipe expanding and contracting device according to claim 1, wherein the linear feeding assembly comprises:

the pair of linear feeding baffle plates are arranged in parallel and are arranged on the rack assembly through a first supporting piece and a second supporting piece;

and the conveying mechanism comprises a belt speed regulating motor, and a driving wheel and a driven wheel which are fixedly arranged at two ends of the pair of linear feeding baffles respectively, wherein a conveying belt is sleeved on the driving wheel and the driven wheel.

5. The automatic copper pipe expanding and contracting device according to claim 4, wherein the linear feeding mechanism further comprises:

the linear feeding baffle plate is arranged on the linear feeding baffle plate;

the linear material storage induction clamp is arranged on the linear feeding stop block; and

and the linear feeding cover plate is arranged on the pair of linear feeding baffle plates.

6. The automatic copper tube expansion and contraction apparatus according to claim 1, wherein the tube end feeding assembly comprises:

a feeding duct plate and a cross plate which are arranged in parallel to each other on a third support member and a fourth support member which are arranged in parallel on a table surface of the frame assembly, wherein a drop tube nip is provided between the feeding duct plate and the cross plate;

the material hooking plate is positioned at one end of the feeding guide pipe plate and is fixedly arranged on a material hooking plate fixing block, and the material hooking plate fixing block is arranged on the transverse plate; and

the copper pipe adjusting plate is arranged on the feeding guide pipe plate and forms a hole groove with the feeding guide pipe plate so that a copper pipe can pass through the hole groove; and

a feed floor disposed between the third support and the fourth support and below the feed conduit plate.

7. The automatic copper pipe expanding and contracting device according to claim 1, wherein the upper clamping die assembly comprises:

the oil cylinder is fixedly arranged on the oil cylinder fixing plate and partially penetrates through the oil cylinder fixing plate;

the plurality of spacing columns are arranged on the surface of the table plate of the rack assembly and used for supporting the oil cylinder fixing plate;

the upper clamping die is arranged below the oil cylinder and can move upwards or downwards under the actuation of the oil cylinder;

the limiting fixing plate is arranged below the oil cylinder fixing plate;

the limiting plate is fixedly arranged on the limiting plate cylinder; and

and the push needle is fixedly arranged on the limit plate.

8. The automatic copper pipe expanding and contracting device according to claim 1, wherein the lower clamping die assembly comprises:

the lower die clamping seat is arranged on the surface of the table plate of the rack component;

the lower clamping die is arranged on the lower clamping die holder;

the inclined block is arranged on an inclined block cylinder and can move under the actuation of the inclined block cylinder, and the inclined block is embedded into the lower clamping die;

the pipe end positioning baffle is arranged on the pipe end positioning baffle cylinder;

the transverse stop block is arranged on the transverse stop block cylinder and can be pushed by the transverse stop block cylinder to stop the copper pipe, so that the copper pipe rolls into the lower clamping die; and

and the copper pipe sliding plate is arranged on the surface of the table plate of the rack assembly, and the arrangement height of the copper pipe sliding plate is lower than that of the lower clamping die.

9. The automatic copper tube necking device of claim 1, wherein the necking assembly comprises:

the pressurizing cylinder fixing plate is arranged on the surface of the table plate of the rack assembly, and a pressurizing cylinder is arranged on the pressurizing cylinder fixing plate;

a die base plate provided on the pressurizing cylinder, the pressurizing cylinder penetrating through the pressurizing cylinder fixing plate;

at least one guide post disposed on the mold bottom plate;

the stamping die sliding rail is arranged on the die bottom plate;

the punch die is arranged on the punch die fixing plate;

the screw rod and the stepping motor are fixedly arranged on the die bottom plate;

and the sensor guide rail is arranged on the die bottom plate and is positioned above the screw rod, and a sensor is arranged on the sensor guide rail.

10. A copper tube automatic necking-in device according to claim 8 or 9, wherein the copper tube automatic necking-in device further comprises:

and the material receiving box is arranged close to the rack assembly and is positioned below the copper pipe sliding plate so as to receive the copper pipe with the expanded and contracted opening.

Technical Field

The invention relates to a feeding device, in particular to an automatic copper pipe expanding and contracting device.

Background

Some copper pipes in the air conditioner pipeline spare need expand the throat processing to the pipe fitting port for making things convenient for the piping welding, and shorter copper pipe is carrying out the pipe end shaping process, also when carrying out flaring or throat to the pipe end, and existing equipment only expands the orificial function of copper pipe that contracts, need utilize the instrument by the manual work to pick up the copper pipe and send into the die clamper, and the die clamper cylinder pushes down, fixes the copper pipe, then three throat mould or three flaring mould from upwards pushing vertically down, carry out throat or flaring to the copper pipe. In this process, because the pipe fitting is shorter, operating personnel is when sending into the die that presss from both sides with the pipe of instrument jack-up, and the distance of hand distance die is very near, because the copper pipe is short, can not directly protect, has very big potential safety hazard, and staff's hand is easy to be caused mechanical injury. In addition, in the operation process, an operator needs to frequently grab the materials from the material box by using the left hand and then frequently pick up the materials by using a tool with the right hand and send the materials into the clamping die; the operation is carried out by putting manpower into each device, and each device needs to be operated by two persons every day, so that the labor cost is wasted.

Disclosure of Invention

To the problem among the above-mentioned prior art, this application has provided a copper pipe that satisfies technology quality requirement expands throat automatic production device, can realize that automatic arrangement order copper pipe, automatic conveying copper pipe, self-holding copper pipe, automatic expand/contract copper pipe mouth of pipe and copper pipe are automatic to fall into and connect the workbin, need not artifical pay-off, have reduced the potential safety hazard.

The invention provides an automatic copper pipe expanding and shrinking device, which comprises: the automatic mouth expanding and contracting mechanism comprises a linear feeding assembly, a pipe end feeding assembly, a lower clamping die assembly, an upper clamping die assembly and a mouth expanding and contracting assembly, wherein the bin assembly is arranged close to the rack assembly; the linear feeding assembly is connected with the bin assembly and the pipe end feeding assembly to receive a copper pipe supplied by the bin assembly and convey the copper pipe to the pipe end feeding assembly, the copper pipe enters the lower clamping die assembly through the pipe end feeding assembly, the upper clamping die assembly is arranged above the lower clamping die assembly, the lower clamping die assembly and the upper clamping die assembly can fixedly clamp the copper pipe, and the necking assembly is used for necking the copper pipe.

In one embodiment, the bin assembly includes a bin chassis and a bin disposed on the bin chassis, the bin including: the copper pipe receiving plate is used for receiving a plurality of copper pipes to be expanded and contracted poured by an operator; the bin material pusher bottom plate is obliquely arranged inside the bin and is connected with the copper pipe receiving plate; the material pushing plate sliding rail is arranged on the bottom plate of the stock bin material pusher; the bin pushing plate is arranged on the pushing plate slide rail and can slide along the pushing plate slide rail under the actuation of the pushing plate cylinder; at least one layer of temporary copper pipe storage plate which is fixedly arranged on the bottom plate of the stock bin pusher so as to buffer the copper pipe, and the next layer of stock bin pusher pushes the copper pipe to move upwards along the direction of the pusher slide rail; and the bin discharging plate is obliquely arranged at the top end of the bottom plate of the bin pusher.

In one embodiment, the silo further comprises: a bin size adjusting plate disposed on an inner wall of the bin in a vertical direction.

In one embodiment, the linear feed assembly comprises: the pair of linear feeding baffle plates are arranged in parallel and are arranged on the rack assembly through a first supporting piece and a second supporting piece; and the conveying mechanism comprises a belt speed regulating motor, and a driving wheel and a driven wheel which are fixedly arranged at two ends of the pair of linear feeding baffles respectively, wherein a conveying belt is sleeved on the driving wheel and the driven wheel.

In one embodiment, the linear feed mechanism further comprises: the linear feeding baffle plate is arranged on the linear feeding baffle plate; the linear material storage induction clamp is arranged on the linear feeding stop block; and the linear feeding cover plate is arranged on the pair of linear feeding baffle plates.

In one embodiment, the tube end in-feed assembly comprises: a feeding duct plate and a cross plate which are arranged in parallel to each other on a third support member and a fourth support member which are arranged in parallel on a table surface of the frame assembly, wherein a drop tube nip is provided between the feeding duct plate and the cross plate; the material hooking plate is positioned at one end of the feeding guide pipe plate and is fixedly arranged on a material hooking plate fixing block, and the material hooking plate fixing block is arranged on the transverse plate; the copper pipe adjusting plate is arranged on the feeding guide pipe plate and forms a hole groove with the feeding guide pipe plate so that a copper pipe can pass through the hole groove; and a feed floor disposed between the third support and the fourth support and below the feed conduit plate.

In one embodiment, the upper clamp die assembly includes: the oil cylinder is fixedly arranged on the oil cylinder fixing plate and partially penetrates through the oil cylinder fixing plate; the plurality of spacing columns are arranged on the surface of the table plate of the rack assembly and used for supporting the oil cylinder fixing plate; the upper clamping die is arranged below the oil cylinder and can move upwards or downwards under the actuation of the oil cylinder; the limiting fixing plate is arranged below the oil cylinder fixing plate; the limiting plate is fixedly arranged on the limiting plate cylinder; and the push needle is fixedly arranged on the limit plate.

In one embodiment, the lower clamp die assembly comprises: the lower die clamping seat is arranged on the surface of the table plate of the rack component; the lower clamping die is arranged on the lower clamping die holder; the inclined block is arranged on an inclined block cylinder and can move under the actuation of the inclined block cylinder, and the inclined block is embedded into the lower clamping die; the pipe end positioning baffle is arranged on the pipe end positioning baffle cylinder; the transverse stop block is arranged on the transverse stop block cylinder; and the copper pipe sliding plate is arranged on the surface of the table plate of the rack assembly, and the arrangement height of the copper pipe sliding plate is lower than that of the lower clamping die.

In one embodiment, the flare assembly includes: the pressurizing cylinder fixing plate is arranged on the surface of the table plate of the rack assembly, and a pressurizing cylinder is arranged on the pressurizing cylinder fixing plate; a die base plate provided on the pressurizing cylinder, the pressurizing cylinder penetrating through the pressurizing cylinder fixing plate; at least one guide post disposed on the mold bottom plate; the stamping die sliding rail is arranged on the die bottom plate; the punch die is arranged on the punch die fixing plate; the screw rod and the stepping motor are fixedly arranged on the die bottom plate; and the sensor guide rail is arranged on the die bottom plate and is positioned above the screw rod, and a sensor is arranged on the sensor guide rail.

In one embodiment, the automatic copper pipe necking device further comprises: and the material receiving box is arranged close to the rack assembly and is positioned below the copper pipe sliding plate so as to receive the copper pipe with the expanded and contracted opening.

Compared with the prior art, the automatic copper pipe expanding and shrinking device comprises an automatic sorting and ordering copper pipe, an automatic copper pipe conveying device, an automatic copper pipe clamping device, an automatic copper pipe expanding/shrinking device and an automatic copper pipe dropping receiving box; the device is simple to operate, and only the additives are fed into the stock bin assembly when the device is operated by staff to start the equipment; the device realizes the operation of each part of the display interface, and can be manually debugged and automatically operated. This device feed bin realizes single material of automatic hierarchical top, with the material from unordered arrangement to the single ejection of compact of order, need not the manual pay-off of people, so stopped staff's hand completely and pressed from both sides the risk of hindering.

The features mentioned above can be combined in various suitable ways or replaced by equivalent features as long as the object of the invention is achieved.

Drawings

The invention will be described in more detail hereinafter on the basis of embodiments and with reference to the accompanying drawings. Wherein:

FIG. 1 is a schematic structural diagram of an automatic copper pipe expansion and contraction device according to an embodiment of the present invention;

FIG. 2 shows a schematic structural diagram of a rack assembly according to an embodiment of the invention;

FIG. 3 shows a schematic structural view of a silo assembly according to an embodiment of the invention;

FIG. 4 shows a partial cross-sectional view of a cartridge assembly taken along plane A of FIG. 3 in accordance with an embodiment of the present invention;

FIG. 5 shows a schematic structural view of a linear feed assembly according to an embodiment of the invention;

FIG. 6 shows a partial cross-sectional view of the linear feed assembly along plane B of FIG. 5 in accordance with an embodiment of the present invention;

FIG. 7 shows a schematic structural view of a tube end feeding assembly according to an embodiment of the present invention;

FIG. 8 shows an exploded view of a tube end feed assembly in accordance with an embodiment of the present invention;

FIGS. 9a and 9b are schematic structural views illustrating an upper clamp die assembly according to an embodiment of the present invention;

FIG. 10 shows an enlarged view of an upper clamp die assembly in area C of FIG. 9b, in accordance with an embodiment of the present invention;

FIG. 11 shows a schematic structural view of a lower clamp die assembly according to an embodiment of the present invention;

fig. 12 is a sectional view showing the assembly of an upper clamping die and a lower clamping die according to an embodiment of the present invention;

FIG. 13 is a schematic view showing an assembly structure of a lower clamp die assembly and a frame assembly according to an embodiment of the present invention;

FIG. 14 is a schematic view of a flare assembly according to an embodiment of the present invention;

FIG. 15 shows an enlarged view of a flare assembly in area D of FIG. 14 according to an embodiment of the present invention;

list of reference numerals:

100-automatic copper pipe expansion and contraction device; 110-a bin assembly; 120-a rack assembly; 140-a linear feed assembly; 150-pipe end feeding assembly; 160-upper clamping die assembly; 170-lower clamping die assembly; 180-a flare assembly; 1-stock bin pusher bottom plate; 2-a stock bin material pushing plate; 3-a material pushing plate slide rail; 4-a stock bin underframe; 5-a bin discharging guide plate; 6-copper pipe receiving plate; 7-adjusting the size of the stock bin; 8-stock bin pusher shell; 49-a silo stripper plate cylinder; 64-copper tube temporary storage plate; 9-linear feeding stop block; 10-linear material storage induction rack; 11-linear feeding baffle; 12-a driven wheel; 13-driving wheel; 14-belt speed regulating motor; 15-a belt; 16-linear feeding cover plate; 55-a first support; 56-a second support; 17-feed conduit plate; 18-hook plate fixing block; (ii) a 19-hook material baffle; 20-hook plate; 21-a feed floor; 22-a catheter push plate; 23-conduit push plate cylinder; 24-copper pipe adjusting plate; 25-dropping pipe crack; 26-hook plate cylinder; 57-a third support; 58-a fourth support; 59-a transverse plate; 60-a fifth support member; 65-hole slot; 27-oil cylinder fixing plate; 28-clamping the mold; 29-oil cylinder; 30-spacer columns; 31-a limit fixing plate; 32-a limiting plate cylinder; 33-a limiting plate; 34-push pin; 35-lower clamping die; 36-a sloping block; 37-swash block cylinder; 50-pipe end positioning baffle; 51-pipe end positioning baffle cylinder; 52-transverse stops; 53-transverse dog cylinder; 54-copper tube slide plate; 61-lower die clamping seat; 62-a rack assembly table surface; 38-pressure cylinder fixing plate; 39-a pressure cylinder; 40-a mould base plate; 41-guide column; 42-die slide rail; 43-punch die holding plate; 44-a punch die; 45-screw mandrel; 46-a stepper motor; 47-a sensor rail; 48-a sensor; 63-sliding rail sliding block.

In the drawings, like parts are provided with like reference numerals. The drawings are not to scale.

Detailed Description

The invention will be further explained with reference to the drawings.

Fig. 1 shows a schematic structural view of an automatic copper pipe expansion and contraction device 100 according to the present invention. As shown in fig. 1, the apparatus 100 includes a bin assembly 110, a rack assembly 120, an automatic throat expanding mechanism disposed on the rack assembly 120, and a receiving bin, wherein the automatic throat expanding mechanism includes a linear feeding assembly 140, a pipe end feeding assembly 150, an upper clamping die assembly 160, a lower clamping die assembly 170, and a throat assembly 180. Wherein the bin assembly 110 is disposed proximate to the rack assembly 120; the linear feeding assembly 140 is connected to the bin assembly 150 and the tube end feeding assembly 160 to receive the copper tube supplied by the bin assembly 110 and deliver the copper tube to the tube end feeding assembly 150, the copper tube enters the lower clamping die assembly 170 through the tube end feeding assembly 150, the upper clamping die assembly 160 is disposed above the lower clamping die assembly 170, and the lower clamping die assembly 170 and the upper clamping die assembly 160 can fixedly clamp the copper tube, and the flaring assembly 180 is used for flaring the copper tube.

Fig. 2 shows a schematic view of the rack assembly 120, which may be a cabinet structure having a top surface that is the table surface 62.

Specifically, the silo assembly 110 is mounted on the right side of the frame assembly 120, the first support 55 of the linear feeding assembly 140 is mounted on the silo chassis 4 of the silo assembly 110, the second support 56 of the linear feeding assembly 140 is directly mounted on the table 62 of the frame assembly 120, the pipe end feeding assembly 150 is directly mounted on the table 62 of the frame assembly 120 through the third support 57, the fourth support 58 and the fifth support 60, the lower clamp die holder 61 of the lower clamp die assembly 170 is directly mounted on the table 62 of the frame assembly 120, and the swash block cylinder 37 and the transverse stop cylinder 53 are mounted on the bottom surface of the table 62 of the frame assembly 120. The upper clamping die assembly 160 is directly mounted to the table 62 of the frame assembly 120 by four spaced posts 30, and the expansion and contraction assembly 180 is directly mounted to the table 62 of the frame assembly 120 by the pressure cylinder fixing plate 38.

Figures 3 and 4 each show a block diagram of a cartridge assembly 110 in accordance with an embodiment of the present invention. The stock bin stoker shell 8 of cuboid shape is installed on stock bin chassis 4, and the slant of stock bin stoker bottom plate 1 is installed in stock bin stoker shell 8, and stock bin stoker cylinder 49 is installed on the back of stock bin stoker bottom plate 1, and the stoker slide rail 3 is installed on stock bin stoker bottom plate 1, and four layers of stock bin stoker 2 are all installed on stoker slide rail 3 to pass stock bin stoker bottom plate 1 and be connected with stock bin stoker cylinder 49. The copper pipe temporary storage plate 64 is directly fixed on the bottom plate 1 of the bin pusher, and the bin discharge plate 5 is installed on the bottom plate 1 of the bin pusher. The bin size adjusting plate 7 is vertically arranged on the shell 8 of the bin pusher.

Fig. 5 and 6 are schematic structural views of the linear feed assembly 140. As shown in fig. 5 and 6, the first support 55 is mounted on the bin bottom frame 4, the second support 56 is mounted on the table 62 of the frame assembly 120, the belt speed regulating motor 14 is mounted on the frame assembly 120, the two linear feeding baffles 11 are mounted on the first support 55 and the second support 56, the belt driving wheel 13 and the belt driven wheel 12 are mounted on the linear feeding baffles 11, and the belt 15 is tightened on the belt driving wheel 13 and the belt driven wheel 12. The linear feeding baffle plate 9 is arranged on the linear feeding baffle plate 11, the linear material storage induction clamp 10 is directly arranged on the linear feeding baffle plate 9, and the linear feeding cover plate 16 is arranged on the two linear feeding baffle plates 11.

Figures 7 and 8 are block diagrams of the tube end feeding assembly 150. In fig. 7 and 8, the third supporting member 57 is directly mounted on the table 62 of the rack assembly 120, the fourth supporting member 58 is mounted on the table 62 of the rack assembly 120, the feeding bottom plate 21 is mounted on the middle position between the third supporting member 57 and the fourth supporting member 58, the feeding duct plate 17 is mounted on the third supporting member 57 and the fourth supporting member 58, the hooking baffle plate 19 is mounted on the feeding duct plate 17, the copper pipe adjusting plate 24 and the feeding duct plate 17 form a hole slot 65, the cross plate 59 is mounted on the third supporting member 57 and the fourth supporting member 58, the hooking plate cylinder 26 is mounted on the cross plate 59, the hooking plate fixing block 18 is mounted on the hooking plate cylinder 26, the hooking plate 20 is mounted on the hooking plate fixing block 18, the fifth supporting member 60 is mounted on the table 62 of the rack assembly 120, the duct pushing plate cylinder 23 is mounted on the fifth supporting member 60, the pipe push plate 22 is mounted on the pipe push plate cylinder 23 and is located above the feeding bottom plate 21 with a small gap from the feeding bottom plate 21. A drop tube pinch 25 is present between the feed conduit plate 17 and the cross plate 59.

Fig. 9a, 9b and 10 are structural views of an upper clamp die assembly 160 of the present invention. As shown in the figure, four spacing columns 30 are directly installed on the frame assembly 120, the oil cylinder fixing plate 27 is installed on the four spacing columns 30, the oil cylinder 29 is installed above the oil cylinder fixing plate 27, the upper clamping die 28 is installed at a position where the oil cylinder 29 penetrates and extends to the lower portion of the oil cylinder fixing plate 27, the limiting fixing plate 31 is directly installed below the oil cylinder fixing plate 27, the limiting plate air cylinder 32 is fixed on the limiting fixing plate 31, the limiting plate 33 is fixed on the limiting plate air cylinder 32, and the push pin 34 is fixed on the limiting.

Fig. 11 to 13 are structural views of a lower clamp die assembly 170 of the present invention. As shown in fig. 11, the lower die holder 61 is mounted on the table 62 of the rack assembly 120, the lower die 35 is mounted on the lower die holder 61, the swash block cylinder 37 is mounted below the table 62 of the rack assembly 120, the swash block 36 is mounted on the swash block cylinder 37, the swash block 36 is embedded in the lower die 35, the tube end positioning baffle cylinder 51 is mounted below the table 62 of the rack assembly 120, the tube end positioning baffle 50 is mounted on the tube end positioning baffle cylinder 51, the transverse baffle cylinder 53 is mounted below the pressure cylinder fixing plate 38, the transverse baffle 52 is mounted on the transverse baffle cylinder 53, and the copper tube sliding plate 54 is directly mounted on the table 62 of the rack assembly 120 and is lower than the lower die 35 in front of the lower die 35.

Fig. 14 and 15 show a schematic structural view of the expansion and contraction part 180 according to an embodiment of the present invention. The pressure cylinder fixing plate 38 is directly mounted on the frame assembly 120, the pressure cylinder 39 is mounted on the pressure cylinder fixing plate 38, the die base plate 40 is mounted on the pressure cylinder 39 passing through the pressure cylinder fixing plate 38, and four guide posts 41 are mounted on the die base plate 40. The stamping die slide rail 42 is arranged on the die bottom plate 40, the punch die fixing plate 43 is arranged on the slide rail slide block 63 of the stamping die slide rail 42, the punch die 44 is arranged on the punch die fixing plate 43, the screw rod 45 is connected with the stepping motor 46 and fixed on the die bottom plate 40, the sensor guide rail 47 is arranged on the die bottom plate 40 and positioned above the screw rod 45, and the sensor 48 is arranged on the sensor guide rail 47.

The working process of the automatic copper pipe expansion and contraction device 100 of the invention is as follows:

starting the device, manually pouring the copper pipe onto the copper pipe receiving plate 6 in the bin assembly 110, because the copper pipe receiving plate 6 is an inclined plane, the copper pipes on the copper pipe receiving plate 6 slide to the lowest copper pipe temporary storage plate 64 and are accumulated at the position of the lowest copper pipe temporary storage plate 64, each layer of the four layers of material bin material pushing plates 2 is continuously pushed upwards to the height of the copper pipe temporary storage plate 64 on the upper layer by the material bin material pushing plate cylinder, then the copper pipes fall back to the height of the next copper pipe temporary storage plate 64, the copper pipes stacked on the lowest copper pipe temporary storage plate 64 are pushed up to be single to the second copper pipe temporary storage plate 64, then the copper pipes are pushed to the third copper pipe temporary storage plate 64, finally the copper pipes are pushed to the fourth copper pipe temporary storage plate 64, namely the uppermost copper pipe temporary storage plate 64, the uppermost bin material pushing plate 2 is pushed to the bin material discharging guide plate 5 to roll on the belt 15, and the process of pushing out the disordered copper pipes one by one is achieved.

Secondly, the single pipe end of the belt 15 of the linear feeding assembly 140 is linearly fed to the pipe end, and the copper pipe moves along the conveying direction of the belt 15.

Thirdly, the copper pipe enters the pipe end feeding assembly 150 along the belt 15, the copper pipe is pushed into a hole groove 65 formed by the copper pipe adjusting plate 24 and the feeding guide pipe plate 17 by the pipe end surface of the copper pipe conveyed from the belt 15 of the rear linear feeding assembly 140, passes through the hole groove 65 and is blocked by the hook plate 20, the hook plate cylinder 26 pushes the hook plate fixing block 18 to drive the hook plate 20 to move forwards, a channel is reserved at the position of the opened clamping hole for blocking the copper pipe part, the copper pipe is continuously pushed to the hook baffle 19 by the copper pipe moved backwards along the direction of the hole groove 65, the hook plate cylinder 26 returns to pull the hook plate fixing block 18 to drive the hook plate 20 to hook the copper pipe blocked by the hook baffle 19, the copper pipe falls onto the feeding bottom plate 21 from the falling pipe clamping seam 25, the guide pipe push plate cylinder 23 pushes the guide pipe push plate 22 to roll, and then the copper pipe is blocked by the transverse baffle 52 pushed out by the transverse baffle cylinder 53, the transverse baffle 52 pushed out by the transverse baffle cylinder 53 is stopped and rolled into the lower clamp die 35 of the lower clamp die assembly 170.

And fourthly, the copper pipe is rolled into the lower clamping die 35, the transverse baffle plate 52 pushed out by the transverse stop block air cylinder 53 retracts, the limiting plate air cylinder 32 pushes the limiting plate 33 and the push needle 34 on the limiting plate to push the copper pipe to the lower part of the upper clamping die 28 along the groove of the lower clamping die 35, the copper pipe is blocked and positioned by the pipe end positioning baffle plate 50 pushed up by the pipe end positioning baffle plate air cylinder 51, then the limiting plate air cylinder 32 drives the limiting plate 33 and the push needle 34 on the limiting plate to retract, the oil cylinder 29 pushes the upper clamping die 28 downwards, and the copper pipe is clamped and fixed by the upper clamping die 28 and the lower clamping die.

After the copper pipe is clamped and fixed by the upper clamping die 28 and the lower clamping die 35, the pipe end positioning baffle cylinder 51 drives the pipe end positioning baffle 50 to fall, the stepping motor 46 drives the screw rod 45 to rotate, the screw rod 45 drives the punch die fixing plate 43 and the punch die 44 on the punch die fixing plate to slide on the punch slide rail 42, and the movement of the punch die 44 is completed. The pressurizing cylinder 39 pushes the die base 40 to move in the extending direction of the guide post 41 to feed the punch die 44 toward the copper pipe, thereby expanding/contracting the copper pipe. The expansion/contraction is finished in a plurality of times (the contraction can be finished for 1-3 times as required), the booster cylinder 39 retreats once per expansion/contraction, and the stepping motor 46 drives the punch die 44 to move backwards by one station along the punch slide rail 42. The booster cylinder 39 is moved forward again and then retracted again. The sensor 48 senses the position of the punch die fixing plate 43 driven by the screw rod 45, and the punch die 44 can return to the original point after the copper pipe is expanded/contracted every time, so that the accuracy is kept.

Sixthly, the pressurizing cylinder 39 returns to the original position, the upper clamping die 28 is lifted, the inclined block cylinder 37 jacks up the inclined block 36, the copper pipe in the lower clamping die 35 is ejected out, slides down from the copper pipe sliding plate 54 and falls into the material receiving box, and the expansion/contraction is finished. This completes one process and the process is repeated.

The original production mode is complex in operation, and workers need to frequently grab materials from a material box by using a left hand and then frequently pick up the materials by using a tool by using a right hand and send the materials into a clamping die; each device needs to be operated by two persons every day, so that great labor cost waste is generated; the hand has potential safety hazard of being damaged by the clamping of the clamping die; and the operation action of the copper pipe end expanding and necking process is simple and repeated, and the copper pipe end expanding and necking process can be replaced by automatic equipment.

The device realizes the automatic expansion and contraction production of copper pipes with the length of 40-100mm, and comprises the steps of automatically arranging and sequencing the copper pipes, automatically conveying the copper pipes, automatically clamping the copper pipes, automatically expanding/contracting the pipe orifices of the copper pipes, and automatically dropping the copper pipes into a material receiving box; the device is simple to operate, only the additives are fed into the stock bin assembly 110 when the device is operated by staff, and the equipment is started; the device realizes the operation of each part of the display interface, and can be manually debugged and automatically operated. This device feed bin realizes single material of automatic hierarchical top, with the material from unordered arrangement to the single ejection of compact of order, need not the manual pay-off of people, so stopped staff's hand completely and pressed from both sides the risk of hindering.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "bottom", "top", "front", "rear", "inner", "outer", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention.

Although the invention herein has been described with reference to particular embodiments, it is to be understood that these embodiments are merely illustrative of the principles and applications of the present invention. It is therefore to be understood that numerous modifications may be made to the illustrative embodiments and that other arrangements may be devised without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that features described in different dependent claims and herein may be combined in ways different from those described in the original claims. It is also to be understood that features described in connection with individual embodiments may be used in other described embodiments.