A plastic part gate separation device

Abstract

The present invention provides a plastic part gate separation device, which includes a frame, a positioning plate, a distance sensor, a control module, a pressing plate assembly and a shearing assembly. The positioning plate is arranged on the upper end surface of the frame. A positioning groove for positioning the plastic part is arranged on the positioning plate. The distance sensor is arranged on the positioning plate and is used for sensing whether the plastic part is placed in place. The control module is electrically connected to the distance sensor, the pressing plate assembly and the shearing assembly respectively. When the control module receives the signal that the plastic part is placed in place fed back by the distance sensor, it controls the pressing plate assembly to press the plastic part to prevent the plastic part from moving, and controls the shearing assembly to shear the gate condensate of the plastic part, so as to realize the separation of the plastic part from the gate condensate. The present invention can realize the precise positioning and accurate shearing of the plastic part.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical equipment, and specifically, to a plastic part gate separating device. Background Art

[0002] Air guide vanes are commonly used at the air outlets of household appliances such as air conditioners, air coolers, and heaters, and are necessary components for adjusting the air direction. Generally, an household appliance device requires 8 to 16 air guide vanes, and the demand is very large. However, the air guide vanes produced by an injection molding machine often cannot automatically separate the gate material (waste material), and multiple workers are required to manually assist in removing it with gate scissors. However, the air guide vanes have very strict control over the burrs (tiny burrs) on themselves, so there are high requirements for the quality after the gate is removed. If cut manually too much, it will affect the appearance, and if cut too little, there will be a "whistling sound" during actual use, making it very difficult for manual operation to accurately control.

[0003] In view of the above problems, the present invention designs a plastic part gate separating device that can accurately position and precisely shear plastic parts. Summary of the Invention

[0004] In view of the above problems in the prior art, the present invention provides a plastic part gate separating device, which can accurately position and precisely shear plastic parts.

[0005] In a first aspect, the present invention provides a plastic part gate separating device, including a frame, a positioning plate, a distance sensor, a control module, a pressing plate assembly, and a shearing assembly.

[0006] The positioning plate is arranged on the upper end surface of the frame, and a positioning groove for positioning the plastic part is arranged on the positioning plate.

[0007] The distance sensor is arranged on the positioning plate and is used to sense whether the plastic part is placed in place.

[0008] The control module is electrically connected to the distance sensor, the pressing plate assembly, and the shearing assembly respectively. When the control module receives the signal that the plastic part is placed in place feedback by the distance sensor, it controls the pressing plate assembly to press the plastic part to prevent the plastic part from moving, and controls the shearing assembly to shear the gate condensate of the plastic part, so as to realize the separation of the plastic part and the gate condensate.

[0009] In one embodiment, the pressing plate assembly includes a pressing plate, a power assembly, at least one first guide post, and a spring. The pressing plate can press against the plastic part to prevent the plastic part from moving up and down. The power assembly is used to drive the pressing plate to move along the length direction of the positioning plate. The first guide post sequentially passes through the pressing plate and the positioning plate and then is connected to the power assembly. The spring is sleeved on the first guide post above the pressing plate and is used to apply a force towards the positioning plate to the pressing plate, so that the pressing plate presses against the plastic part.

[0010] The beneficial effect of adopting the above embodiment is that by moving the pressing plate towards the positioning groove, the pressing plate presses against the plastic part to achieve the up and down positioning of the plastic part and prevent the plastic part from moving up and down.

[0011] In one embodiment, the power assembly includes a first cylinder and at least one slide rod. The first cylinder is arranged on the lower end surface of the positioning plate. The slide rod is connected to the telescopic end of the first cylinder. The first guide post is fixedly connected to the slide rod. The first cylinder can drive the first guide post to move along the length direction of the positioning plate through the slide rod, thereby driving the pressing plate to move along the length direction of the positioning plate.

[0012] The beneficial effect of adopting the above embodiment is that the first cylinder can drive the first guide post to move along the length direction of the positioning plate through the slide rod, thereby driving the pressing plate to move along the length direction of the positioning plate.

[0013] In one embodiment, at least one first oblong hole is arranged on the positioning plate, and the first oblong hole extends along the length direction of the positioning plate.

[0014] The beneficial effect of adopting the above embodiment is that the first cylinder can push the first guide post to move along the length direction of the positioning plate.

[0015] In one embodiment, a rocker and a push rod are further included. One end of the rocker is rotatably connected to the slide rod, and the other end is rotatably connected to the push rod. The rocker is used to convert the linear motion of the slide rod along the length direction of the positioning plate into the linear motion of the push rod along the extending direction of the positioning groove.

[0016] The beneficial effect of adopting the above embodiment is that the rocker is used to convert the linear motion of the slide rod along the length direction of the positioning plate into the linear motion of the push rod along the extending direction of the positioning groove.

[0017] In one embodiment, a second kidney-shaped oval hole is provided on the rocker. A second guide post is inserted through the second kidney-shaped oval hole. One end of the second guide post is fixed to the lower end surface of the positioning plate. The push rod is arranged on one side of the positioning plate perpendicular to the positioning groove. During the linear movement of the push rod along the extending direction of the positioning groove, it can abut against the plastic part to prevent the plastic part from moving along the extending direction of the positioning groove.

[0018] The beneficial effect of adopting the above embodiment is that by the push rod abutting against the plastic part, the plastic part is prevented from moving along the extending direction of the positioning groove.

[0019] In one embodiment, the frame includes a support body, a fixing plate and a support plate. The positioning plate is arranged on the upper end surface of the support body. The fixing plate is arranged on the support body and is located below the positioning plate. A connecting plate is provided on the fixing plate, and the connecting plate is used to fix the shearing assembly. The support plate is arranged on the fixing plate and is used to support the positioning plate.

[0020] The beneficial effect of adopting the above embodiment is that the support body is provided to support the positioning plate and the fixing plate, and the support plate prevents the positioning plate from deforming, thereby affecting the positioning accuracy.

[0021] In one embodiment, the shearing assembly includes at least one pair of scissors, a scissors positioning seat and a second cylinder. The scissors are used to shear the sprue condensate of the plastic part to realize the separation of the plastic part and the sprue condensate. The scissors positioning seat is arranged at one end of the connecting plate, and one of the knife handles of the scissors is fixed to the scissors positioning seat. The second cylinder is arranged at the other end of the connecting plate, and the telescopic end of the second cylinder is connected to the other knife handle of the scissors. The second cylinder is used to complete the shearing action of the scissors during the telescopic process.

[0022] The beneficial effect of adopting the above embodiment is that the second cylinder is used to push the knife handle of the scissors to move, thereby completing the shearing action of the scissors.

[0023] In one embodiment, there are also at least four limit posts located between the positioning plate and the fixing plate, which are used to limit the distance between the positioning plate and the fixing plate, thereby controlling the distance between the cutting edge of the scissors and the sprue of the plastic part and ensuring the quality of shearing.

[0024] The beneficial effect of adopting the above embodiment is that the limit posts are provided to limit the distance between the positioning plate and the fixing plate, thereby limiting the distance between the cutting edge of the scissors and the sprue of the plastic part and ensuring the quality of shearing.

[0025] In one embodiment, it further includes a positioning block which is arranged on the fixed plate and used to position the second cylinder to prevent the second cylinder from moving.

[0026] The beneficial effect of adopting the above embodiment is that the second cylinder is positioned by the positioning block to prevent the second cylinder from moving.

[0027] In one embodiment, it further includes a manipulator which is used to grab the plastic part and place the plastic part in the positioning groove.

[0028] The beneficial effect of adopting the above embodiment is that automatic grabbing of the plastic part is realized.

[0029] Compared with the prior art, the advantages of the present invention are as follows:

[0030] (1) Through the settings of the positioning groove, the pressing plate and the push rod, complete positioning of the plastic part is realized, and the positioning is accurate.

[0031] (2) By pushing the movement of the scissors handle by the second cylinder to complete the shearing action, accurate shearing is realized, and the product quality is improved.

[0032] (3) The degree of automation is high, and the production efficiency is improved.

[0033] The above technical features can be combined in various suitable ways or replaced by equivalent technical features as long as the object of the present invention can be achieved. Description of the Drawings

[0034] In the following, the present invention will be described in more detail based on embodiments and with reference to the drawings. Among them:

[0035] Figure 1 Shows the first isometric view of the plastic part gate separating device.

[0036] Figure 2 Shows the second isometric view of the plastic part gate separating device.

[0037] Figure 3 Shows the third isometric view of the plastic part gate separating device.

[0038] Figure 4 Shows Figure 3 The partial enlarged view of A in

[0039] In the drawings, the same components are denoted by the same reference numerals. The drawings are not drawn to actual scale.

[0040] 10 - Plastic part gate separating device; 11 - Frame; 111 - Support body; 113 - Fixed plate; 115 - Support plate; 117 - Connecting plate; 13 - Positioning plate; 131 - Positioning groove; 133 - First oblong hole; 15 - Pressing plate assembly; 151 - Pressing plate; 153 - Power assembly; 153a - First cylinder; 153b - Slide rod; 155 - First guide post; 17 - Shearing assembly; 171 - Scissors; 173 - Scissors positioning seat; 175 - Second cylinder; 19 - Plastic part; 21 - Rocker; 211 - Second oblong hole; 23 - Second guide post; 25 - Push rod; 27 - Limit post; 29 - Positioning block. Detailed implementation

[0041] To facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. The preferred embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein.

[0042] As Figures 1-4 shown, a plastic part gate separating device 10 includes a frame 11, a positioning plate 13, a pressing plate assembly 15, a shearing assembly 17, a distance sensor, and a control module.

[0043] The positioning plate 13 is arranged on the upper end surface of the frame 11, and a positioning groove 131 for positioning the plastic part 19 is arranged on the positioning plate 13.

[0044] The distance sensor is arranged on the positioning plate 13 and is used to sense whether the plastic part 19 is placed in place.

[0045] The control module is electrically connected to the distance sensor, the pressing plate assembly 15, and the shearing assembly 17 respectively. When the control module receives the signal that the plastic part 19 is placed in place fed back by the distance sensor, it controls the pressing plate assembly 15 to press against the plastic part 19 to prevent the plastic part 19 from moving, and controls the shearing assembly 17 to shear the gate condensate of the plastic part 19 to realize the separation of the plastic part 19 from the gate condensate.

[0046] Among them, the frame 11 includes a support body 111, a fixed plate 113, and a support plate 115. The positioning plate 13 is arranged on the upper end surface of the support body 111. The fixed plate 113 is arranged on the support body 111 and is located below the positioning plate 13. A connecting plate 117 is arranged on the fixed plate 113, and the connecting plate 117 is used to fix the shearing assembly 17. The support plate 115 is arranged on the fixed plate 113 and is used to support the positioning plate 13.

[0047] Specifically, in this embodiment, the support main body 111 includes four vertically arranged support rods. A positioning plate 13 is horizontally arranged on the upper end surface of the support main body 111. The positioning plate 13 is a rectangular plate structure. A plurality of positioning grooves 131 are arranged side by side and at intervals on the upper surface of the positioning plate 13. The positioning grooves 131 are through groove structures with the extending direction of the grooves perpendicular to the length direction of the positioning plate 13. The plastic part 19 is placed in the positioning grooves 131 and is positioned by the positioning grooves 131. In this embodiment, the plastic part 19 is a wind guiding vane formed by injection molding. The fixing plate 113 is horizontally arranged below the positioning plate 13 and is fixed to the support frame main body 111 by bolts. The connecting plate 117 is fixed to the upper surface of the fixing plate 113 by bolts. The shearing assembly 17 is fixed to the connecting plate 117.

[0048] Among them, the pressing plate assembly 15 includes at least one pressing plate 151, a power assembly 153, at least one first guide post 155 and a spring. The pressing plate 151 can press against the plastic part 19 to prevent the plastic part 19 from moving up and down. The power assembly 153 is used to drive the pressing plate 151 to move along the length direction of the positioning plate 13. The first guide post 155 passes through the pressing plate 151 and the positioning plate 13 in sequence and is connected to the power assembly 153. The spring is sleeved on the position of the first guide post 155 above the pressing plate 151 and is used to apply a force towards the positioning plate 13 to the pressing plate 151, so that the pressing plate 151 presses against the plastic part 19.

[0049] Specifically, in this embodiment, the pressing plate 151 is a rectangular plate structure, and the length in its length direction is the same as the length in its width direction. A pressing plate 151 corresponding to the positioning groove 131 is arranged on each same side of each positioning groove 131. The length direction of the pressing plate 151 is parallel to the extending direction of the positioning groove 131. The power assembly 153 is arranged on the lower end surface of the positioning plate 13. The first guide post 155 passes through the spring, the pressing plate 151 and the positioning plate 13 in sequence and is connected to the power assembly 153. The power assembly 153 drives the pressing plate 151 to move along the length direction of the positioning plate 13 towards the positioning groove 131 corresponding to the pressing plate 151 through the first guide post 155. Under the action of the spring force, the pressing plate 151 presses against the upper part of the plastic part 19 to prevent the plastic part 19 from moving up and down.

[0050] Among them, the power assembly 153 includes a first air cylinder 153a and at least one slide rod 153b. The first air cylinder 153a is arranged on the lower end surface of the positioning plate 13. The slide rod 153b is connected to the telescopic end of the first air cylinder 153a. The first guide post 155 is fixedly connected to the slide rod 153b. The first air cylinder 153a can drive the first guide post 155 to move along the length direction of the positioning plate 13 through the slide rod 153b, so as to drive the pressing plate 151 to move along the length direction of the positioning plate 13.

[0051] Specifically, in this embodiment, a first cylinder 153a is provided at the middle position of the lower end surface of the positioning plate 13. The telescopic direction of the first cylinder 153a is parallel to the length direction of the positioning plate 13. A slide rod 153b is provided on each side of the first cylinder 153a. Both slide rods 153b are parallel to the length direction of the positioning plate 13. A first push plate is provided on the telescopic end of the first cylinder 153a. The two ends of the first push plate are respectively connected to the slide rods 153b. When the first cylinder 153a pushes the first push plate to move, it drives the two slide rods 153b to move along the length direction of the positioning plate 13.

[0052] Wherein, at least one first waist-shaped circular hole 133 is provided on the positioning plate 13, and the first waist-shaped circular hole 133 extends along the length direction of the positioning plate 13.

[0053] Specifically, in this embodiment, two first through holes are provided on each pressing plate 151. At the position corresponding to the first through holes on the positioning plate 13, a first waist-shaped circular hole 133 is provided. The first waist-shaped circular hole 133 extends along the length direction of the positioning plate 13. The first guide post 155 sequentially passes through the spring, the pressing plate 151 and the first waist-shaped circular hole 133 and is fixed on the slide rod 153b. When the slide rod 153b moves along the length direction of the positioning plate 13, the slide rod 153b drives the first guide post 155 to move along the length direction of the positioning plate 13 in the first waist-shaped circular hole 133, thereby driving the pressing plate 151 to move along the length direction of the positioning plate 13.

[0054] Wherein, the plastic part gate separating device 10 further includes a rocker 21 and a push rod 25. One end of the rocker 21 is rotatably connected to the slide rod 153b, and the other end is rotatably connected to the push rod 25. The rocker 21 is used to convert the linear motion of the slide rod 153b along the length direction of the positioning plate 13 into the linear motion of the push rod 25 along the extending direction of the positioning groove 131. A second waist-shaped circular hole 211 is provided on the rocker 21, and a second guide post 23 is passed through the second waist-shaped circular hole 211. One end of the second guide post 23 is fixed on the lower end surface of the positioning plate 13. The push rod 25 is arranged on one side of the positioning plate 13 perpendicular to the positioning groove 131. During the linear motion of the push rod 25 along the extending direction of the positioning groove 131, it can abut against the plastic part 19 to prevent the plastic part 19 from moving along the extending direction of the positioning groove 131.

[0055] Specifically, in this embodiment, a second waist-shaped round hole 211 is provided on the rocker 21. The second guide post 23 passes through the second waist-shaped round hole 211 and is fixed to the lower end surface of the positioning plate 13. Relative movement is possible between the second guide post 23 and the rocker 21. The push rod 25 is arranged on one side in the length direction of the positioning plate 13 and is parallel to the length direction of the positioning plate 13. During the movement of the sliding rod 153b along the length direction of the positioning plate 13, the rocker 21 pushes the push rod 25 to move in the extending direction of the positioning groove 131. During the movement, the push rod 25 abuts against the plastic part 19, positioning the plastic part 19 in the extending direction of the positioning groove 131 and preventing the plastic part 19 from moving along the extending direction of the positioning groove 131.

[0056] Among them, the shearing assembly 17 includes at least one pair of scissors 171, a scissors positioning seat 173, and a second air cylinder 175. The scissors 171 are used for shearing the sprue condensate of the plastic part 19 to separate the plastic part 19 from the sprue condensate. The scissors positioning seat 173 is arranged at one end of the connecting plate 117. One of the knife handles of the scissors 171 is fixed to the scissors positioning seat 173. The second air cylinder 175 is arranged at the other end of the connecting plate 117. The telescopic end of the second air cylinder 175 is connected to the other knife handle of the scissors 171. The second air cylinder 175 is used to complete the shearing action of the scissors 171 during the telescopic process.

[0057] Specifically, in this embodiment, two connecting plates 117 are arranged at intervals on the upper end surface of the fixed plate 113. The length direction of the connecting plates 117 is perpendicular to the length direction of the positioning plate 13. A scissors positioning seat 173 is fixed by bolts at one end of the connecting plate 117 close to the sprue condensate of the plastic part 19, and a second air cylinder 175 is fixed by bolts at the other end. Four pairs of scissors 171 are evenly distributed at intervals on the scissors positioning seat 173. One of the knife handles of the four pairs of scissors 171 is fixed to the scissors positioning seat 173. A second push plate is arranged on the telescopic end of the second air cylinder 175. The other knife handles of the four pairs of scissors 171 are all fixed to the second push plate. During the telescopic process of the second air cylinder 175, the second push plate pushes the knife handles on the scissors 171 to move, closing the cutting edges of the scissors 171 and thus completing the shearing of the sprue condensate of the plastic part 19. Among them, the cutting edges of the scissors 171 are located at the sprue condensate of the plastic part 19. During the closing process of the cutting edges of the scissors 171, the shearing of the sprue condensate of the plastic part 19 is completed. The second push plate simultaneously pushes the four pairs of scissors 171 to move the same feed amount, ensuring the consistency of the shearing of the scissors 171 and improving the quality of the plastic part 19.

[0058] Among them, there are also at least four limiting posts 27. The limiting posts 27 are all located between the positioning plate 13 and the fixed plate 113 and are used to limit the distance between the positioning plate 13 and the fixed plate 113, thereby controlling the distance between the cutting edges of the scissors 171 and the sprue of the plastic part 19 and ensuring the quality of the shearing.

[0059] Specifically, in this embodiment, a limit post 27 is respectively arranged on each of the four vertically arranged support rods of the support main body 111. The four limit posts 27 are all located between the positioning plate 13 and the fixed plate 113 and are respectively perpendicular to the positioning plate 13 and the fixed plate 113, and are used to limit the distance between the positioning plate 13 and the fixed plate 113, thereby controlling the distance between the cutting edge of the scissors 171 and the sprue of the plastic part 19 and ensuring the cutting quality.

[0060] Wherein, it further includes a positioning block 29, and the positioning block 29 is arranged on the fixed plate 113 and is used to position the second cylinder 175 to prevent the second cylinder 175 from moving.

[0061] Specifically, in this embodiment, a positioning block 29 is arranged on the side of the second cylinder 175 away from the telescopic end. The positioning block 29 abuts against the second cylinder 175 and is used to position the second cylinder 175 to prevent the second cylinder 175 from shifting after long-term telescoping, resulting in the scissors 171 being unable to fully close, thereby affecting the cutting quality of the scissors 171.

[0062] Wherein, the plastic part sprue separating device 10 further includes a manipulator, which is used to grab the plastic part 19 and place the plastic part 19 in the positioning groove 131.

[0063] In this embodiment, after the plastic part 19 is injection molded in the injection molding machine, the manipulator takes out the plastic part 19 with the sprue condensate from the injection molding machine and places it in the positioning groove 131. After the distance sensor senses that the plastic part 19 is placed in place, it sends the signal that the plastic part 19 is placed in place to the control module. After receiving the signal that the plastic part 19 is placed in place, the control module controls the first cylinder 153a to act, and the first cylinder 153a drives the slide rod 153b to move. During the movement of the slide rod 153b, the first guide post 155 drives the pressing plate 151 to move towards the positioning groove 131. The pressing plate 151 abuts against the plastic part 19 under the action of the spring to realize the up and down positioning of the plastic part 19. During the movement of the slide rod 153b, the slide rod 153b also drives the rocker 21 to move, and the rocker 21 pushes the push rod 25 to move towards the extending direction of the positioning groove 131. The push rod 25 abuts against the plastic part 19 during the movement to position the plastic part 19 in the extending direction of the positioning groove 131 and prevent the plastic part 19 from moving along the extending direction of the positioning groove 131. Through the combined action of the positioning groove 131, the pressing plate 151 and the push rod 25, the positioning of the plastic part 19 in all directions is realized, and thus the precise positioning of the plastic part 19 is realized. After the precise positioning of the plastic part 19 is completed, the control module controls the second cylinder 175 to act, and the second cylinder 175 pushes the handle of the scissors 171 to move, realizing the closing of the blade of the scissors 171, and further completing the cutting of the sprue condensate of the plastic part 19.

[0064] Wherein, the distance sensor can be a light-sensing distance sensor.

[0065] In one example, it further includes an electromagnetic directional valve and a time-delay switch. After the control module receives the signal that the plastic part 19 is placed in place, it controls the electromagnetic directional valve to switch the air circuit to the first cylinder 153a. The first cylinder 153a drives the slide rod 153b to move. After the set time period ends, the time-delay switch controls the electromagnetic directional valve to reverse and switch the air circuit to the second cylinder 175. The second cylinder 175 pushes the handle on the scissors 171 to move.

[0066] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "bottom", "top", "front", "rear", "inner", "outer", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present invention.

[0067] Although the present invention has been described herein with reference to specific embodiments, it should be understood that these embodiments are merely examples of the principles and applications of the present invention. Therefore, it should be understood that many modifications can be made to the exemplary embodiments, and other arrangements can be designed, as long as they do not deviate from the spirit and scope of the present invention as defined by the appended claims. It should be understood that the different dependent claims and the features described herein can be combined in a manner different from that described in the original claims. It should also be understood that the features described in connection with a single embodiment can be used in other described embodiments.

Claims

1. A plastic part gate separation device, characterized in that, it includes a frame, a positioning plate, a distance sensor, a control module, a pressing plate assembly and a shearing assembly, the positioning plate is arranged on the upper end surface of the frame, and a positioning groove for positioning the plastic part is arranged on the positioning plate; the distance sensor is arranged on the positioning plate and is used for sensing whether the plastic part is placed in place; the control module is electrically connected to the distance sensor, the pressing plate assembly and the shearing assembly respectively. When the control module receives the signal that the plastic part is placed in place fed back by the distance sensor, it controls the pressing plate assembly to press the plastic part to prevent the plastic part from moving, and controls the shearing assembly to shear the gate condensate of the plastic part to realize the separation of the plastic part from the gate condensate; the pressing plate assembly includes: a pressing plate which can press on the plastic part to prevent the plastic part from moving up and down; a power assembly for driving the pressing plate to move along the length direction of the positioning plate; at least one first guide post which passes through the pressing plate and the positioning plate in sequence and is connected to the power assembly; and a spring which is sleeved on the position of the first guide post above the pressing plate and is used for applying a force towards the positioning plate to the pressing plate so that the pressing plate presses on the plastic part; the power assembly includes: a first air cylinder which is arranged on the lower end surface of the positioning plate; and at least one slide rod which is connected to the telescopic end of the first air cylinder, and the first guide post is fixedly connected to the slide rod; the first air cylinder can drive the first guide post to move along the length direction of the positioning plate through the slide rod, thereby driving the pressing plate to move along the length direction of the positioning plate; it further includes a rocker and a push rod. One end of the rocker is rotatably connected to the slide rod, and the other end is rotatably connected to the push rod. The rocker is used for converting the linear motion of the slide rod along the length direction of the positioning plate into the linear motion of the push rod along the extending direction of the positioning groove; a second waist-shaped hole is arranged on the rocker, and a second guide post passes through the second waist-shaped hole. One end of the second guide post is fixed on the lower end surface of the positioning plate. The push rod is arranged on one side of the positioning plate perpendicular to the positioning groove. During the linear motion process of the push rod along the extending direction of the positioning groove, it can abut against the plastic part to prevent the plastic part from moving along the extending direction of the positioning groove; the frame includes: a support main body, and the positioning plate is arranged on the upper end surface of the support main body; a fixing plate which is arranged on the support main body and is located below the positioning plate. A connecting plate is arranged on the fixing plate, and the connecting plate is used for fixing the shearing assembly; and a support plate which is arranged on the fixing plate and is used for supporting the positioning plate.

2. The plastic part gate separation device according to claim 1, characterized in that, at least one first waist-shaped hole is arranged on the positioning plate, and the first waist-shaped hole extends along the length direction of the positioning plate.

3. The plastic part gate separation device according to claim 1, characterized in that, the shearing assembly includes: At least one pair of scissors for shearing the sprue of the plastic part to separate the plastic part from the sprue; A scissor positioning seat provided at one end of the connecting plate, with one of the handles of the scissors fixed to the scissor positioning seat; and A second cylinder provided at the other end of the connecting plate, with the telescopic end of the second cylinder connected to the other handle of the scissors, and the second cylinder is used to complete the shearing action of the scissors during the telescopic process.

4. The plastic part sprue separation device according to claim 3, characterized in that it further includes at least four limit posts located between the positioning plate and the fixing plate for restricting the distance between the positioning plate and the fixing plate, thereby controlling the distance between the cutting edge of the scissors and the sprue of the plastic part to ensure the quality of shearing.

5. The plastic part sprue separation device according to claim 3 or 4, characterized in that it further includes a positioning block provided on the fixing plate for positioning the second cylinder to prevent the second cylinder from moving.

6. The plastic part sprue separation device according to claim 5, characterized in that it further includes a manipulator for grasping the plastic part and placing the plastic part in the positioning groove.

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