CN207889025U - The waste material clamping device of injection moulding machine - Google Patents

Abstract

The utility model relates to a waste material clamping device of an injection molding machine, which belongs to the technical field of plastic molding and comprises a waste material clamping device located above the injection molding machine. The mobile frame connected to the rotating frame by horizontal sliding and the mechanical claw assembly connected to the mobile frame through a sliding rod. The mechanical claw assembly includes an opposite splint and a driving mechanism. A slot is opened on the opposite side of the splint. The slot The first slider and the second slider are plugged in. One end of the first slider and the second slider inserted into the slot protrudes from the guide rod respectively. The other end of the guide rod is exposed through the splint, and the guide rod is exposed through the splint. A stopper is arranged at one end of the first slider, a spring is arranged between the first slider and the second slider and the groove bottom of the slot respectively, and the spring is sleeved on the guide rod. It has the advantages of ensuring the clamping strength of the manipulator and preventing the waste from falling off.

Description

Scrap gripper for injection molding machines

technical field

The utility model relates to the technical field of plastic molding, in particular to a waste material clamping device of an injection molding machine.

Background technique

Injection molding is a method of producing industrial products. Injection molding machine is the main molding equipment for thermoplastics to support plastic products of various shapes with plastic molding molds. Injection molding is realized through injection molding machines and molds. Simply put That is, the plastic in the molten state is injected into the mold of the plastic product by pressure, and various plastic parts are obtained by cooling and molding.

At present, in the injection molding production process, since the products produced come from a high-temperature environment, the temperature is relatively high. When the existing injection molding products are produced with small volumes, it is usually a set of molds that are closed at one time to produce multiple molds at the same time. The product will arrange multiple molding cavities on one mold, and there are flow channels between each molding cavity. After the injection molding is completed, injection molding waste will be generated on the flow channel. When the waste needs to be taken, it is often caused by the product itself. The temperature is too high and burns, so most of the products produced by injection molding are clamped by the manipulator clamps to the newly produced products.

Existing manipulators hold waste materials through the interaction of two splints to remove the waste materials. However, after a long period of use, the splints will become unstable due to wear and tear, thereby causing the waste materials to fall off.

Utility model content

The purpose of this utility model is to provide a waste material clamping device of an injection molding machine, which has the advantages of convenient replacement of the splint, thereby ensuring the clamping strength of the manipulator and preventing the waste material from falling off.

The above-mentioned technical purpose of the utility model is achieved through the following technical solutions:

A waste material clamping device for an injection molding machine, including a waste material clamping device located above the injection molding machine, the waste material clamping device includes a column arranged on the injection molding machine, a rotary frame connected to the column for horizontal rotation, and a horizontal sliding frame with the rotary frame The moving frame connected by shifting and the mechanical jaw assembly slidingly connected with the moving frame through a sliding rod, the sliding direction of the mechanical jaw assembly is perpendicular to the sliding direction of the moving frame, and the mechanical jaw assembly includes the opposite splint and the drive The drive mechanism for closing and opening the splint. The opposite sides of the splint are respectively provided with corresponding slots, and the first slider and the second slider are respectively inserted in the slots. The first slider and the second slider are connected to the plug respectively. The slots are slidingly connected, the ends of the first slider and the second slider inserted into the slots protrude from the guide rods respectively, one end of the guide rods is fixedly connected with the first slider and the second slider respectively, and the other end of the guide rods passes through the splint The exposed end of the guide rod passing through the splint is provided with a stopper, and a spring is provided between the first slider and the second slider and the groove bottom of the slot respectively, and the spring is sleeved on the guide rod.

By adopting the above technical scheme, by setting the first slider and the second slider on the opposite side of the splint respectively, and pushing the first slider and the second slider close by the elastic force of the spring, the waste material between the splints is increased. Clamping force prevents the scrap from coming off between the splint.

The utility model is further configured as follows: the opposite ends of the first slider and the second slider are arc-shaped concave surfaces.

By adopting the above technical scheme, the first slider and the second slider have a circular arc concave surface, which increases the contact area between the first slider and the second slider and the scrap, and increases the contact area between the first slider and the second slider. The holding force between the sliders makes it difficult for the waste to separate from the first slider and the second slider.

The utility model is further configured as follows: a boss protrudes from the side of the first slider close to the second slider, and the second slider is provided with a groove for the insertion of the bump.

By adopting the above-mentioned technical scheme, when the boss on the first slider is inserted into the groove, a closed space is formed between the first slider and the second slider, and when the waste material flows from the first slider to the second Sliding between the sliders, the waste jaws are clamped through the closed space to prevent separation from the mechanical jaw assembly.

The utility model is further configured as follows: the opposite side surfaces of the first slider and the second slider are provided with criss-cross anti-slip stripes.

By adopting the above technical solution, the frictional force between the first slider and the second slider and the waste material is increased through the protective stripes, and the separation between the waste material and the first slider and the second slider is prevented.

The utility model is further configured as follows: the stopper is set on the exposed end of the guide rod, and the stopper is threadedly connected with the guide rod.

By adopting the above technical scheme, the stopper can be easily disassembled through the threaded connection between the stopper and the guide rod, so that the first slider and the second slider can be disassembled, and when the first slider or the second slider When damage occurs, it is convenient to replace the first slider or the second slider.

The utility model is further set as follows: the driving mechanism includes a cylinder fixed on the sliding rod and a sleeve fixed on the front end of the cylinder drive shaft through the installation shell, a power rod is set inside the sleeve, and the power rod is fixedly connected with the drive shaft of the cylinder , the power rod is exposed through the central axis of the sleeve, and the side wall of the end of the sleeve away from the cylinder is fixed with a mirror image opposite leg, the length direction of the leg is the same as the length direction of the sleeve, and the end of the power rod passing through the sleeve is located Between the two legs, the power rod and the legs are connected with the splint through the link assembly.

By adopting the above technical solution, the power rod is pushed by the cylinder to move in the sleeve, and the splint is opened or closed by the connecting rod assembly, thereby completing the process of clamping waste.

The utility model is further configured as follows: the connecting rod assembly is divided into two groups, and the connecting mechanisms are respectively located at opposite positions on both sides of the splint.

By adopting the above-mentioned technical scheme, through two sets of connecting rod assemblies, the stress of the splint is more uniform, and the clamping of waste materials is more stable.

The utility model is further configured as follows: the connecting rod assembly includes a first connecting rod, a three-hole connecting rod and a second connecting rod, the three-hole connecting rod is in a triangular shape, the middle hole of the three-hole connecting rod is hinged to the leg, and the hole at the bottom is connected to the The splint is hinged, and the other end is a free end. The two ends of the first connecting rod are respectively hinged with the free end of the three-hole connecting rod and the power rod. The second connecting rod is located on the opposite side of the splint. The two ends are respectively hinged with the side wall of the splint and the side wall of the supporting leg.

By adopting the above technical scheme, through the cooperation between the first connecting rod, the second connecting rod and the three-hole connecting rod, the stability of the splint clamping the waste can be increased, thereby ensuring that the splint can clamp the waste, making it difficult for the waste to come into contact with the splint. break away.

The utility model is further set as: the end of the power rod located between the legs is provided with a bump, the bump is perpendicular to the power rod, the length of the bump matches the distance between the legs, and the end of the legs is far away from the sleeve An inwardly bent flange is provided, the first connecting rod is hinged on the protrusion, and the second connecting rod is hinged on the flange.

By adopting the above technical solution, the flanging on the legs can reduce the material volume and weight of the legs, and reduce the weight of the mechanical jaw assembly.

The utility model is further configured as follows: the power rod is a circle with a smooth surface, and the inside of the sleeve is a smooth surface.

By adopting the above technical solution, the frictional force between the power rod and the sleeve is reduced, thereby reducing energy loss when the power rod moves.

In summary, the utility model has the following beneficial effects:

1. By setting the first slider and the second slider on the opposite side of the splint, and pushing the first slider and the second slider close by the elastic force of the spring, the clamping force of the scrap between the splints is increased, Prevent the separation between the waste material and the splint;

2. Through the threaded connection between the stopper and the guide rod, the stopper can be easily disassembled, so that the first slider and the second slider can be disassembled. When the first slider or the second slider is damaged, It is convenient to replace the first slider or the second slider;

3. Through the cooperation between the first connecting rod, the second connecting rod and the three-hole connecting rod, the stability of the splint clamping the waste can be increased, so as to ensure that the splint can clamp the waste and make it difficult for the waste to separate from the splint.

Description of drawings

Fig. 1 is a schematic structural view of an injection molding machine and a waste holding device;

Fig. 2 is a partial enlarged view of part A in Fig. 1;

Fig. 3 is a schematic structural view of the waste holding device;

Fig. 4 is a partially enlarged view of part B in Fig. 3;

Fig. 5 is a sectional view of the mechanical claw;

Fig. 6 is a partially enlarged view of part C in Fig. 5;

Fig. 7 is an exploded schematic diagram of the mechanical claw.

In the figure, 1. Injection molding machine; 11. Clamping component; 2. Waste clamping device; 21. Column; 22. Rotary frame; 221. Turntable; 222. Slide bar; 223. Rotary shaft; 23. Driving cylinder; 24, mechanical jaw assembly; 241, cylinder; 242, power rod; 2421, bump; 243, sleeve; 2431, leg; 244, splint; 2441, slot; 245, clamping assembly; 2451, first Slide block; 2452, the second slide block; 246, the first connecting rod; 247, three-hole connecting rod; 248, the second connecting rod; 249, guide rod; 2410, block; 2411, spring; 25, arc slide Groove; 26, driving disc; 27, mobile frame; 271, sliding part; 272, slideway; 28, sliding rod; 29, driving rod; 3, pulverizer; 4, auxiliary cylinder; 5, installation shell.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is described in further detail. Wherein the same components are denoted by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the directions in the drawings, and the words "bottom" and "top "Face", "inner" and "outer" refer to directions toward or away from, respectively, the geometric center of a particular component.

A kind of scrap clamping device of injection molding machine, as shown in Figure 1, comprises injection molding machine 1, and the interior of injection molding machine 1 is provided with clamping assembly 11, and clamping assembly 11 is used for placing mold and can realize mold Dividing and closing molds. An opening is provided above the injection molding machine 1 , and the opening is facing the mold clamping assembly 11 . A waste material clamping device 2 is arranged above the opening, and the waste material produced after injection molding is clamped by the waste material clamping device 2 . When the injection molding machine 1 completes the injection molding, the mold is opened, and the semi-finished product injected is attached in the cavity, and the waste material is pulled out by the waste material clamping device 2, so that the product is separated from the waste material. On one side of the injection molding machine 1, a pulverizer 3 is arranged, and the pulverizer 3 is fixed on the ground, and the waste material clamping device 2 sends the waste material pulled out into the pulverizer 3, thereby pulverizing the waste material.

As shown in Figures 1 and 3, the scrap holding device 2 includes a column 21 arranged on the injection molding machine 1, a rotating frame 22 connected to the column 21 for horizontal rotation, a moving frame 27 connected to the rotary frame 22 for horizontal sliding, and The mechanical claw assembly 24 that is slidingly connected with the moving frame 27 . The sliding direction of the mechanical jaw assembly 24 is perpendicular to the sliding direction of the moving frame 27 .

As shown in FIG. 3 , the rotating frame 22 includes a turntable 221 rotatably connected to the column 21 and two parallel and opposite slide bars 222 fixed on the turntable 221 . Sliding parts 271 are provided on both sides of the moving frame 27 , and the sliding parts 271 are respectively connected to the two sliding rods 222 in a sliding manner. A slideway 272 perpendicular to the sliding part 271 is provided at the middle position of the moving frame 27. The mechanical claw assembly 24 is slidably connected in the slideway 272 through the sliding rod 28, and the mechanical claw assembly 24 is fixed to the sliding rod 28. connected.

The rotating frame 22 is provided with an auxiliary cylinder 4 that pulls the moving frame 27 to move along the slide bar 222 on the rotating frame 22 , and the driving shaft of the auxiliary cylinder 4 is fixedly connected with the moving frame 27 . A force is given to the mechanical claw assembly 24 through the auxiliary cylinder 4, so that the mechanical claw assembly 24 separates the waste material from the product.

As shown in FIG. 2 and FIG. 3 , the rotating frame 22 includes a rotating shaft 223 , the rotating shaft 223 is rotatably connected to the column 21 through a bearing, and one end of the rotating shaft 223 connected to the column 21 is exposed through the column 21 . A driving disc 26 is fixed on the exposed end of the rotating shaft 223 , and an arc-shaped chute 25 is arranged on the driving disc 26 , and the arc-shaped chute 25 is fixedly connected with the driving disc 26 . A driving rod 29 is pierced in the arc-shaped chute 25 , and the driving rod 29 slides in the arc-shaped chute 25 to adjust the position of the driving rod 29 in the arc-shaped chute 25 . A driving cylinder 23 is arranged on the column 21 , and a driving rod 29 is fixed on the driving shaft of the driving cylinder 23 . Through the telescopic action of the driving cylinder 23 , the rotating frame 22 is swung, so that the mechanical jaw assembly 24 is swung.

As shown in Figures 1 and 3, the scrap holding device 2 includes a column 21 arranged on the injection molding machine 1, a rotating frame 22 connected to the column 21 for horizontal rotation, a moving frame 27 connected to the rotary frame 22 for horizontal sliding, and The mechanical claw assembly 24 that is slidingly connected with the moving frame 27 . The sliding direction of the mechanical jaw assembly 24 is perpendicular to the sliding direction of the moving frame 27 .

As shown in FIG. 3 , the rotating frame 22 includes a turntable 221 rotatably connected to the column 21 and two parallel and opposite slide bars 222 fixed on the turntable 221 . Sliding parts 271 are provided on both sides of the moving frame 27 , and the sliding parts 271 are respectively connected to the two sliding rods 222 in a sliding manner. A slideway 272 perpendicular to the sliding part 271 is provided at the middle position of the moving frame 27. The mechanical claw assembly 24 is slidably connected in the slideway 272 through the sliding rod 28, and the mechanical claw assembly 24 is fixed to the sliding rod 28. connected.

The rotating frame 22 is provided with an auxiliary cylinder 4 that pulls the moving frame 27 to move along the slide bar 222 on the rotating frame 22 , and the driving shaft of the auxiliary cylinder 4 is fixedly connected with the moving frame 27 . A force is given to the mechanical claw assembly 24 through the auxiliary cylinder 4, so that the mechanical claw assembly 24 separates the waste material from the product.

As shown in FIG. 2 and FIG. 3 , the rotating frame 22 includes a rotating shaft 223 , the rotating shaft 223 is rotatably connected to the column 21 through a bearing, and one end of the rotating shaft 223 connected to the column 21 is exposed through the column 21 . A driving disc 26 is fixed on the exposed end of the rotating shaft 223 , and an arc-shaped chute 25 is arranged on the driving disc 26 , and the arc-shaped chute 25 is fixedly connected with the driving disc 26 . A driving rod 29 is pierced in the arc-shaped chute 25 , and the driving rod 29 slides in the arc-shaped chute 25 to adjust the position of the driving rod 29 in the arc-shaped chute 25 . A driving cylinder 23 is arranged on the column 21 , and a driving rod 29 is fixed on the driving shaft of the driving cylinder 23 . Through the telescopic action of the driving cylinder 23 , the rotating frame 22 is swung, so that the mechanical jaw assembly 24 is swung.

As shown in FIG. 4 and FIG. 5 , the mechanical jaw assembly 24 includes a cylinder 241 fixed at the bottom of the sliding rod 28 , and the telescopic direction of the cylinder 241 is the same as the moving direction of the sliding rod 28 . On the periphery of the cylinder 241, an installation shell 5 with an open bottom is arranged, and the installation shell 5 is fixed on the sliding rod 28 and covers the cylinder 241 inside. The driving shaft of the air cylinder 241 faces the opening direction of the installation case 5 .

A sleeve 243 is provided at the opening of the installation shell 5 , and the sleeve 243 is fixedly connected to the installation shell 5 . The inside of the sleeve 243 is pierced with a power rod 242 , one end of the power rod 242 is fixedly connected with the drive shaft of the cylinder 241 , and the other end is exposed through the central axis of the sleeve 243 . Wherein the power rod 242 is a round shaft with a smooth surface, and the inner surface of the sleeve 243 is a smooth surface.

On the side wall of one end of the sleeve 243 away from the installation shell 5, a mirror-image opposite leg 2431 protrudes, and the leg 2431 is fixedly connected to the side wall of the sleeve, and the length direction of the leg 2431 is the same as that of the sleeve 243 . The end of the leg 2431 away from the sleeve 243 is provided with a flange bent toward the middle of the two legs 2431 , the flange and the leg 2431 are integrally formed, and the flange and the leg 2431 are vertically arranged.

The end of the power rod 242 exposed through the sleeve 243 is located between the opposite legs 2431, and the end of the power rod 242 between the two legs 2431 is provided with a bump 2421, the bump 2421 and the power rod 242 are integrally formed, wherein The length direction of the protrusion 2421 is perpendicular to the length direction of the power rod 242 , and the length of the protrusion 2421 matches the distance between the two legs 2431 .

The opposite clamping plate 244 is provided at the bottom of the supporting leg 2431 , and the opposing clamping plate 244 is connected with the supporting leg and the protrusion 2421 through connecting rod assemblies located on opposite sides of the clamping plate 244 . The connecting rod assembly includes a first connecting rod 246 , a three-hole connecting rod 247 and a second connecting rod 248 . Wherein the three-hole connecting rod 247 is triangular in shape, and the hole in the middle is hinged with the end of the supporting leg 2431 away from the sleeve 243, and the hole on the two sides is hinged with the side wall of one end of the splint 244 located on the outside of the holes on both sides, and the other end is free end. The free end of the three-hole connecting rod 247 is connected to the projection 2421 through the first connecting rod 246, and the two ends of the first connecting rod 246 are respectively hinged with the three-hole connecting rod and the projection 2421.

The second connecting rod 248 is located on the side close to the opposite clamping plate 244 , and the two ends of the second connecting rod are respectively hinged to the side wall of the clamping plate 244 and the flange on the supporting leg 2431 . When the power rod 242 moves in the sleeve 243, the three-hole connecting rod 247 is driven by the first connecting rod 246. As the three-hole connecting rod 247 moves, the second connecting rod 248 moves accordingly, so that the splint 244 is opened. and closed. The rotation direction of the splint 244 is restricted by the second connecting rod 248 while increasing the connection strength between the splint 244 and the leg 2431 .

As shown in FIG. 5 and FIG. 6 , on the opposite side wall of the opposite clamping plate 244 , opposite slots 2441 are opened, and a clamping assembly 245 is disposed in the opposite slots 2441 . The clamping assembly 245 includes a first slider 2451 and a second slider 2452 inserted into the slots 2441 on the opposite clamping plate 244 respectively, and the first slider 2451 and the second slider 2452 are slidably connected to the slots 2441 respectively.

One end of the first slider 2451 and the second slider 2452 inserted into the slot 2441 respectively protrudes a guide rod 249, one end of the guide rod 249 is fixedly connected with the first slider 2451 and the second slider 2452, and the other end is passed through Over splint 244 is exposed. One end where the guide rod 249 passes through the splint 244 is provided with a stopper 2410, the stopper 2410 is sleeved on the exposed end of the guide rod 249, an external thread is provided at the exposed end of the guide rod 249, and an external thread is provided on the stopper 2410. The thread matches the internal thread, and the stopper 2410 is threadedly connected to the guide rod 249 through the cooperation of the external thread and the internal thread.

A spring 2411 is arranged between the first slider 2451 and the second slider 2452 and the groove bottom of the slot 2441 respectively. The spring is sleeved on the shaft body of the guide rod 249. The first slider 2451 or the second slider 2452 is in conflict.

As shown in FIG. 7 , the opposite surfaces of the first sliding block 2451 and the second sliding block 2452 are arc concave. In order to increase the surface friction of the first slider 2451 and the second slider 2452, criss-cross anti-skid stripes can be provided on the surfaces of the first slider 2451 and the second slider 2452, which are not shown in the diagram of the anti-skid stripes. On the opposite side of the first slider 2451 and the second slider 2452 , the first slider 2451 protrudes from a boss, and the boss is integrally formed with the first slider 2451 . On the opposite side wall of the second slider 2452, there is a groove for inserting the boss. When the opposite clamping plate 244 is closed, the boss on the first slider 2451 is inserted into the second slider 2452 as it moves. inside the groove.

This specific embodiment is only an explanation of the utility model, and it is not a limitation of the utility model. After reading this description, those skilled in the art can make modifications to the embodiment without creative contribution according to needs, but as long as it is within the utility model All new claims are protected by patent law.

Claims (10)

1. a kind of waste material clamping device (2) of injection moulding machine, including it is located at the waste material clamping device above injection moulding machine (1) (2), the waste material clamping device (2) includes being arranged in injection moulding machine（1）On column (21), with column (21) rotate horizontally The swivel mount (22) of connection, the movable stand (27) being connect with swivel mount (22) horizontal sliding and pass through sliding with movable stand (27) The mechanical claw component (24) of bar (28) sliding connection, glide direction and the movable stand (27) of the mechanical claw component (24) Glide direction is perpendicular, it is characterised in that：The mechanical claw component (24) includes opposite clamping plate (244) and drives clamping plate (244) driving mechanism for being closed opening is carried out, the opposite side of the clamping plate (244) offers opposite slot respectively (2441), it is plugged with the first sliding block (2451) and the second sliding block (2452), first sliding block respectively in the slot (2441) (2451) it is slidably connected respectively with slot (2441) with the second sliding block (2452), first sliding block (2451) and the second sliding block (2452) one end for being inserted into slot (2441) is extended with guide rod (249) respectively, and described guide rod (249) one end is respectively with first Sliding block (2451) and the second sliding block (2452) are fixedly linked, and the other end of the guide rod (249) exposes across clamping plate (244), One end that the guide rod (249) passes through clamping plate (244) to expose is provided with block (2410), first sliding block (2451) and the Two sliding blocks (2452) are provided with spring (2411) between slot (2441) slot bottom respectively, and the spring (2411) is set in guiding On bar (249).

2. the waste material clamping device (2) of injection moulding machine according to claim 1, it is characterised in that：First sliding block (2451) and the opposite one end end face of the second sliding block (2452) is in circular arc concave surface.

3. the waste material clamping device (2) of injection moulding machine (1) according to claim 2, it is characterised in that：Described first slides Block (2451) is extended with boss close to the side of the second sliding block (2452), is offered for convex block on second sliding block (2452) (2421) groove being inserted into.

4. the waste material clamping device (2) of injection moulding machine according to claim 1, it is characterised in that：First sliding block (2451) and the opposite side surface of the second sliding block (2452) offers crisscross skid resistance strip.

5. the waste material clamping device (2) of injection moulding machine according to claim 1, it is characterised in that：The block (2410) it is sleeved on one end of guide rod (249) exposing, the block (2410) is threadedly coupled with guide rod (249).

6. the waste material clamping device (2) of injection moulding machine according to claim 1, it is characterised in that：The driving mechanism It is fixed on cylinder (241) drive shaft front end including the cylinder (241) being fixed on sliding bar (28) and by mounting shell (5) Sleeve (243), the sleeve (243) is interior to be arranged with power rail (242), the drive shaft of the power rail (242) and cylinder (241) It is fixedly linked, the power rail (242) is exposed through the central axes of sleeve (243), and the sleeve (243) is far from cylinder (241) One end side wall on be fixed with the opposite supporting leg of mirror image (2431), length direction and the sleeve (243) of the supporting leg (2431) Length direction is identical, the power rail (242) across one end of sleeve (243) positioned at two supporting legs (2431), the power Bar (242) and supporting leg (2431) are connected by link assembly with clamping plate (244).

7. the waste material clamping device (2) of injection moulding machine (1) according to claim 6, it is characterised in that：The connection rod set Part is two groups, and the link assembly is located on the opposite position in clamping plate (244) both sides.

8. the waste material clamping device (2) of injection moulding machine according to claim 7, it is characterised in that：The link assembly Including first connecting rod (246), three hole connecting rods (247) and second connecting rod (248), three hole connecting rods (247) are triangular in shape, and three holes connect The interstitial hole of bar (247) is hinged with supporting leg (2431), and the hole for being located at bottom end is hinged with clamping plate (244), and the other end is free end, institute The both ends for stating first connecting rod (246) are hinged with the free end of three hole connecting rods (247) and power rail (242) respectively, and described second Connecting rod (248) is located at the mutually close side of opposite clamping plate (244), the both ends of second connecting rod (248) respectively with clamping plate (244) The side wall of side wall and supporting leg (2431) is hinged.

9. the waste material clamping device (2) of injection moulding machine according to claim 8, it is characterised in that：The power rail (242) one end between supporting leg (2431) is provided with convex block (2421), and the convex block (2421) is mutually hung down with power rail (242) Directly, the length of the convex block (2421) is matched with the spacing between supporting leg (2431), and the supporting leg (2431) is far from sleeve (243) one end is provided with the flange to bend inwards, and the first connecting rod (246) is hinged in protrusion, the second connecting rod (248) it is hinged on flange.

10. the waste material clamping device (2) of injection moulding machine according to claim 6, it is characterised in that：The power rail (242) it is the smooth circular shaft in surface, the inside of the sleeve (243) is smooth surface.