CN211334425U

CN211334425U - Supplementary pneumatic gripper for drawing of patterns

Info

Publication number: CN211334425U
Application number: CN201922272687.5U
Authority: CN
Inventors: 高祥; 李奎; 高攀; 黄刚
Original assignee: Dongguan Tengsheng Plastic Hardware Co ltd
Current assignee: Dongguan Tengsheng Plastic Hardware Co ltd
Priority date: 2019-12-17
Filing date: 2019-12-17
Publication date: 2020-08-25
Anticipated expiration: 2029-12-17

Abstract

The utility model discloses a pneumatic gripper for assisting demoulding, which has the technical scheme that the pneumatic gripper comprises a base arranged on a manipulator and a mounting seat arranged on the base, wherein a plurality of groups of hooking devices are circumferentially arranged on the mounting seat, each hooking device comprises a hooking seat arranged on the mounting seat, one end of each hooking seat is connected to the mounting seat, and a hinge assembly is arranged on each hooking seat; the hooking device further comprises a claw used for hooking and holding the workpiece on the die, the claw comprises a hinged end and a hooking end, the hinged end of the claw is hinged to the hooking base through a hinge assembly, the hooking end of the claw extends to one side away from the base, and the claw can rotate around the hinged point to the hooking end to hook and hold the workpiece on the die; the hooking base is provided with a pneumatic assembly for driving the claw to rotate to be opened, and the hooking base is also provided with an elastic resetting piece for driving the claw to reset to hook a workpiece. The technology leads the demoulding effect to be better by the hooking mode demoulding.

Description

Supplementary pneumatic gripper for drawing of patterns

Technical Field

The utility model relates to an injection mold field, more specifically say, it relates to a supplementary pneumatic gripper for drawing of patterns.

Background

Injection molds are tools for producing plastic articles and are also tools for imparting complete structure and precise dimensions to plastic articles. Injection molding is a common processing method for mass production of parts with complex shapes, and specifically, a molded product is obtained by cooling and solidifying a material which is melted by heating from a high-pressure mold cavity.

The injection mold consists of a movable mold and a fixed mold, wherein the movable mold is arranged on a movable template of the injection molding machine, and the fixed mold is arranged on a fixed template of the injection molding machine. And when the mold is opened, the movable mold is separated from the fixed mold so as to take out the plastic product.

In the existing injection molding process for a workpiece, such as a mobile phone protective case, after the injection molding of the existing mobile phone protective case is completed, a mechanical arm is usually used for performing a demolding operation. In the prior art, an air exhaust device is generally arranged on a manipulator and connected with a sucker, when the workpiece is demolded, the sucker abuts against the workpiece, the sucker is exhausted by the air exhaust device, so that the sucker is tightly attached to the workpiece, the sucker is driven to move through the movement of the manipulator, and the workpiece is demolded. However, the method of releasing the mold by sucking the workpiece with the suction cup requires the workpiece surface to have high flatness and smoothness, and if the workpiece surface has a concave-convex surface, it is difficult to suck the workpiece, and the releasing effect is not good, so improvement is required.

SUMMERY OF THE UTILITY MODEL

To prior art's not enough, the utility model aims to provide an supplementary pneumatic gripper for drawing of patterns makes the drawing of patterns effect better through colluding the mode drawing of patterns of holding.

The utility model discloses a technical scheme realize like this: a pneumatic gripper for assisting demoulding comprises a base arranged on a manipulator and a mounting seat arranged on the base, wherein a plurality of groups of hooking devices are circumferentially arranged on the mounting seat, each hooking device comprises a hooking seat arranged on the mounting seat, one end of each hooking seat is connected to the mounting seat, and a hinge assembly is arranged on each hooking seat;

the hooking device further comprises a claw used for hooking and holding a workpiece on the die, the claw comprises a hinged end and a hooking end, the hinged end of the claw is hinged to the hooking base through a hinge assembly, the hooking end of the claw extends to one side back to the base, and the claw can rotate around the hinged point to the workpiece hooked and held on the die by the hooking end; collude and be provided with on holding the seat and be used for driving the claw to rotate to open pneumatic assembly, collude and hold still to be provided with on the seat and be used for driving the claw resets to colluding the elasticity piece that holds the work piece.

By adopting the technical scheme, when demoulding is carried out, the pneumatic component drives the claw to open, then the mounting base is driven by the manipulator to move to one side of the mounting base, which is away from the base, to be attached to a workpiece, at the moment, the pneumatic component is closed, the claw is driven by the elastic reset piece to reset, so that the claw hooks the side edge of the workpiece to grab the workpiece, and then the manipulator drives the mounting base to move to realize workpiece demoulding; after the workpiece and the claw are demoulded, the pneumatic assembly is started again and drives the claw to open so as to separate the workpiece from the claw, blanking is realized, and the mode of hooking the workpiece by the claw is arranged to replace the suction mode of the sucker, so that the demoulding effect is better.

As a further improvement of the utility model, a strip-shaped groove is arranged on the upper edge of the hooking seat along one end close to or far away from the mounting seat, and the claw passes through the strip-shaped groove;

articulated subassembly including rotate set up in collude the articulated seat of holding the seat and rotate set up in the articulated shaft of articulated seat, the width direction in the edge strip groove of articulated shaft sets up, the hinged end fixed connection of claw in the articulated shaft.

Through adopting foretell technical scheme, the in-process of hook pivoted carries on spacingly through the bar groove to make the hook rotate more stably, reduce the circumstances of hook off normal.

As a further improvement of the utility model, the pneumatic subassembly includes the air pump, the air outlet of air pump is connected with the tuber pipe, the other end of tuber pipe is connected with cylindric air cock, the air cock is towards the hinged end of hook.

Through adopting foretell technical scheme, during the air pump air feed, through the hinged end with the air cock towards the hook to make spun gas act on the hinged end of hook, the hinged end of hook receives the promotion of atmospheric pressure, makes the hook overturn to open the state around the articulated shaft, opens through jet-propelled mode drive hook, and simple and convenient easily realizes.

As a further improvement of the utility model, the air cock can be dismantled with colluding the seat and be connected, collude to be equipped with on holding the seat and be used for fixing the fixed subassembly of air cock.

Through adopting foretell technical scheme, the air cock can be dismantled with colluding to hold the seat and be connected conveniently and demolish the air cock and overhaul work.

As a further improvement, the fixed subassembly is including seting up in collude the screw hole of the lateral wall of holding the seat, the screw hole runs through the bar groove, the screw hole is located colludes one side that the mount pad was kept away from to the seat, the outer wall circumference of air cock is provided with screw thread fit in the external screw thread of screw hole.

Through adopting foretell technical scheme, the air cock with collude the mode of holding between the seat through threaded connection, conveniently carry out dismouting and cleanness to the trachea.

As a further improvement, the elastic reset piece includes a spring arranged in the strip-shaped groove, the spring is arranged along the length direction of the strip-shaped groove, one end of the spring is connected with the hinged end of the hook claw, the other end is connected with the groove wall of the strip-shaped groove, when the spring is in a natural state, the hook claw can hook the workpiece on the mold.

Through adopting foretell technical scheme, during the drawing of patterns, pneumatic means drive hook opens and compression spring, then drive mount pad to mount pad one side of keeping away from the base and laminate mutually with the work piece, and at this moment, pneumatic means closes, and the spring drives the hook and resets under the effect of restoring force to make the hook collude the side of holding the work piece, realize colluding and hold the work piece, and the spring can provide the hook and keep colluding the power of holding the work piece.

As a further improvement, one side of the mounting seat deviating from the base is evenly provided with the suction hole, the suction hole intercommunication has the getter device.

Through adopting foretell technical scheme, during the drawing of patterns, mount pad and work piece laminating are breathed in through the getter device to make the work piece can be adsorbed at the lateral wall of mount pad, further make to grab and hold the effect better.

As a further improvement of the utility model, one side that the mount pad deviates from the base is provided with the foam-rubber cushion.

By adopting the technical scheme, when the spongy cushion is additionally arranged to avoid demoulding, the mounting seat directly impacts the workpiece, so that the workpiece is damaged.

To sum up, the utility model discloses following beneficial effect has:

1. the mode of hooking the workpiece by the hook claw replaces the suction mode of the sucker, so that the demolding effect is better;

2. the rotating in-process of the hook claw is limited through the strip-shaped groove, so that the hook claw rotates more stably, and the deviation of the hook claw is reduced.

Drawings

Fig. 1 is a schematic overall structure diagram of an embodiment of the present invention;

FIG. 2 is a schematic view of the assembly relationship between the base and the mounting seat in the embodiment of the present invention;

fig. 3 is a partial sectional view of the hooking base in the embodiment of the present invention.

In the figure: 1. a base; 2. a mounting seat; 3. a threaded sleeve; 4. perforating; 5. a bolt; 61. a hooking seat; 62. a hook claw; 621. a hooking end; 622. a hinged end; 6211. a guide surface; 63. a strip-shaped groove; 64. a hinged seat; 65. hinging a shaft; 66. a spring; 67. an air duct; 68. an air tap; 69. a threaded hole; 7. a suction hole; 8. a spongy cushion.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

A pneumatic gripper for assisting demoulding is shown in figures 1 and 2 and comprises a base 1 and a mounting seat 2 arranged on the base 1, wherein the base 1 and the mounting seat 2 are of rectangular structures, and the base 1 can be installed and fixed on a manipulator (not shown in the figure) through bolts. In this embodiment, four thread sleeves 3 are connected between the base 1 and the mounting base 2, so that an installation gap is formed between the base 1 and the mounting base 2, and the base 1 is conveniently installed and fixed on a manipulator. Specifically, the one end and the 1 fixed connection of base of thread bush 3, the other end is connected on mount pad 2, and the perforation 4 has been seted up to the lateral wall that mount pad 2 deviates from base 1, and the bolt 5 is worn to be equipped with by perforation 4, and the screw thread section of bolt 5 passes behind the perforation 4 with 3 threaded connection of thread bush in order to realize the fixed of mount pad 2.

As shown in fig. 2 and 3, six sets of hooking devices for hooking a workpiece on a die (not shown) are circumferentially disposed on the mounting base 2. The hooking device comprises a hooking seat 61 fixedly arranged on the installation seat 2 and a claw 62 arranged on the hooking seat 61, the hooking seat 61 is similar to a cuboid structure, and one end of the hooking seat 61 is fixedly connected with the installation seat 2; collude and hold the seat 61 and go up to have seted up bar groove 63 along self length direction, bar groove 63 link up colludes two relative lateral walls of holding the seat 61, and bar groove 63 is passed through to the one end of claw 62. Specifically, the hook 62 includes a hooking end 621 and a hinge end 622, the hooking end 621 of the hook 62 extends to a side away from the base 1, the hinge end 622 of the hook 62 is hinged to the hooking seat 61 after passing through the strip-shaped groove 63, and the hook 62 can rotate around the hinge point to the hooking end 621 to hook the workpiece on the mold. In this embodiment, the hooking base 61 is provided with a hinge assembly, and the hinge end 622 of the hook 62 is hinged on the hooking base 61 through the hinge assembly.

Specifically, the hinge assembly includes a hinge seat 64 fixedly mounted on the hooking seat 61 and a hinge shaft 65 rotatably disposed on the hinge seat 64, the hinge seat 64 spans the strip-shaped groove 63, the hinge shaft 65 is disposed along the width direction of the strip-shaped groove 63, and the hinge end 622 of the hook 62 is fixedly connected with the hinge shaft 65.

In addition, as shown in fig. 2 and fig. 3, the hooking end 621 is further provided with a guiding surface 6211, and when the hooking end 621 hooks the workpiece on the mold, the guiding surface 6211 is used to interfere with the workpiece and slide with each other, so that the claw 62 rotates around the hinge point to the open state. Meanwhile, the hooking base 61 is provided with an elastic resetting piece for driving the hook claw 62 to reset, and when the hook claw 62 butts against the workpiece to be in an opening state, the hook claw 62 resets through the elastic resetting piece, so that the hook claw 62 hooks the workpiece on the die.

When the demolding operation is carried out, the hook claw 62 is opened, the mounting base 2 is driven by the manipulator to move to the side, deviating from the base 1, of the mounting base 2 to be attached to a workpiece, the hook claw 62 resets through the elastic resetting piece, so that the hook claw 62 hooks the side edge of the workpiece to grab the workpiece, and then the manipulator drives the mounting base 2 to move to realize workpiece demolding.

Specifically, as shown in fig. 2 and 3, the elastic restoring member includes a spring 66 disposed in the strip-shaped groove 63, the spring 66 is disposed along the length direction of the strip-shaped groove 63, one end of the spring 66 is connected to the hinged end 622 of the hook 62, and the other end is connected to the groove wall of the strip-shaped groove 63, and when the spring 66 is in a natural state, the hook 62 is in a hooking state.

After demolding, in order to facilitate separation of the workpiece from the hook 62, a pneumatic assembly for driving the hook 62 to rotate to open is provided on the holder 61.

Specifically, the pneumatic assembly comprises an air pump (not shown), an air outlet of the air pump is connected with an air pipe 67, the other end of the air pipe 67 is connected with a cylindrical air nozzle 68, and the air nozzle 68 faces the hinged end 622 of the claw 62. It should be noted that the air pump is a small air pump. In addition, in practical application, the air pipes 67 of the six hooks 62 can share one air pump, and the air pump is installed on the manipulator.

In addition, as shown in fig. 2 and 3, the air faucet 68 is detachably connected to the hooking base 61, so that the air faucet 68 can be detached and replaced. The hooking seat 61 is provided with a fixing component for fixing the air nozzle 68. Specifically, the fixing assembly comprises a threaded hole 69 horizontally formed in the side wall of the hooking seat 61, the threaded hole 69 penetrates through the strip-shaped groove 63, the threaded hole 69 is located on one side, away from the mounting seat 2, of the hooking seat 61, and an external thread in threaded fit with the threaded hole 69 is circumferentially arranged on the outer wall of the air tap 68.

As shown in fig. 2 and 3, suction holes 7 have been evenly seted up to one side that mount pad 2 deviates from base 1, and suction holes 7 intercommunication has getter device, and in this embodiment, getter device can be air exhauster (not shown in the figure) or aspiration pump (not shown in the figure), and during the drawing of patterns, mount pad 2 and work piece laminating are breathed in through getter device to make the work piece can be adsorbed in the lateral wall of mount pad 2, further make the effect of grabbing of grabhook better.

In addition, one side that mount pad 2 deviates from base 1 still is equipped with foam-rubber cushion 8, and when avoiding the drawing of patterns, mount pad 2 and work piece direct impact lead to the work piece to damage.

The overall working process is as follows: during demolding, the manipulator drives the mounting seat 2 to move to one side of the mounting seat 2, which is far away from the base 1, to be attached to a workpiece, so that the claw 62 hooks the workpiece, the workpiece is adsorbed on the mounting seat 2 through the air suction device, and then the manipulator drives the mounting seat 2 to move until the workpiece is separated from a mold, so that the workpiece demolding is realized; after demolding, the pneumatic device blows air to the hinged end 622 of the claw 62 to rotate the claw 62 about the rotation axis to an open state, at which time the workpiece falls under the action of gravity to achieve separation from the claw 62.

The above embodiments are merely illustrative of the present invention, and are not intended to limit the present invention, and those skilled in the art can make modifications of the present embodiments without inventive contribution as required after reading the present specification, but all the embodiments are protected by patent law within the scope of the present invention.

Claims

1. The utility model provides an assist pneumatic gripper for drawing of patterns which characterized in that: the manipulator comprises a base (1) arranged on a manipulator and a mounting seat (2) arranged on the base (1), wherein a plurality of groups of hooking devices are circumferentially arranged on the mounting seat (2), each hooking device comprises a hooking seat (61) arranged on the mounting seat (2), one end of each hooking seat (61) is connected to the mounting seat (2), and a hinge assembly is arranged on each hooking seat (61);

the hooking device further comprises a hook claw (62) used for hooking and holding a workpiece on the die, the hook claw (62) comprises a hinge end (622) and a hooking end (621), the hinge end (622) of the hook claw (62) is hinged to the hooking base (61) through a hinge assembly, the hooking end (621) of the hook claw (62) extends to one side back to the base (1), and the hook claw (62) can rotate around the hinge point to the hooking end (621) to hook and hold the workpiece on the die; collude and be provided with on holding seat (61) and be used for driving knuckle (62) to rotate to open pneumatic assembly, collude and still be provided with on holding seat (61) and be used for the drive knuckle (62) reset to collude the elasticity piece that resets of holding the work piece.

2. The pneumatic gripper for assisting die release according to claim 1, wherein: a strip-shaped groove (63) is formed in one end, close to or far away from the mounting seat (2), of the upper edge of the hooking seat (61), and the claw (62) penetrates through the strip-shaped groove (63);

articulated subassembly including rotate set up in collude articulated seat (64) and the rotation of holding seat (61) set up in articulated shaft (65) of articulated seat (64), the width direction setting of strip groove (63) is followed in articulated shaft (65), hinged end (622) fixed connection in of hook (62) articulated shaft (65).

3. The pneumatic gripper for assisting die release according to claim 2, wherein: pneumatic assembly includes the air pump, the air outlet of air pump is connected with tuber pipe (67), the other end of tuber pipe (67) is connected with cylindric air cock (68), articulated end (622) of air cock (68) orientation hook (62).

4. The pneumatic gripper for assisting die release according to claim 3, wherein: the air tap (68) is detachably connected with the hooking seat (61), and a fixing assembly for fixing the air tap (68) is arranged on the hooking seat (61).

5. The pneumatic gripper for assisting die release according to claim 4, wherein: the fixing assembly comprises a threaded hole (69) formed in the side wall of the hooking seat (61), the threaded hole (69) penetrates through the strip-shaped groove (63), the threaded hole (69) is located in one side, far away from the mounting seat (2), of the hooking seat (61), and the outer wall of the air tap (68) is circumferentially provided with threads matched with external threads of the threaded hole (69).

6. The pneumatic gripper for assisting die release according to claim 5, wherein: elasticity resets including set up in spring (66) of bar groove (63), spring (66) set up along the length direction of bar groove (63), the one end of spring (66) connect in hinged end (622) of hook (62), the other end connect in the cell wall of bar groove (63), when spring (66) are in natural state, hook (62) can collude the work piece of holding on the mould.

7. The pneumatic gripper for assisting die release according to claim 1, wherein: one side of the mounting seat (2) departing from the base (1) is uniformly provided with air suction holes (7), and the air suction holes (7) are communicated with an air suction device.

8. The pneumatic gripper for assisting die release according to claim 1, wherein: one side of the mounting seat (2) departing from the base (1) is provided with a spongy cushion (8).