A device for removing excess material from injection molded products

Abstract

The present application relates to a device for removing excess material from injection molded products, comprising a frame, a positioning template disposed on the frame, a movable seat connected to the frame for sliding movement in a direction approaching or away from the positioning template, and a driving mechanism for driving the movable seat to slide. The positioning template is provided with a positioning fixture groove adapted for placement of the injection molded product. The movable seat is provided with a hot spot leveling mechanism for leveling the hot melt point of excess material columns on the injection molded product. The hot spot leveling mechanism includes a thermal contact disposed on the movable seat, the thermal contact being provided in plurality and corresponding to the plurality of excess material columns on the injection molded product. The present application has the effect of improving the efficiency of removing excess material columns from injection molded products.

Description

Technical Field

[0001] The present application relates to the technical field of injection molding product processing equipment, and in particular to a residual material removal device for injection molding products. Background Art

[0002] Injection molding, also known as injection molding, is a molding process that combines injection and molding. Its advantages include high production speed, high efficiency, automated operation, a wide variety of designs and colors, and the ability to produce shapes from simple to complex, large to small. Furthermore, it offers precise product dimensions, easy product upgrades, and the ability to produce complex shapes. Injection molding is suitable for mass production and complex product processing.

[0003] In some cases where the cavity space of an injection mold is narrow, the molten material cannot quickly fill the cavity space. To solve this problem, multiple injection ports are usually set at different positions of the injection mold so that the material can quickly fill the entire cavity. After the injection molded product is cooled and formed, there will often be residual material columns at the injection port, forming a protrusion on the outer wall of the product. The staff will then use tools to cut it off to improve the appearance quality of the injection molded product. With respect to the above-mentioned related technologies, there are the following defects: when there are many residual material columns on the surface of the product, the staff needs to remove them one by one, which reduces the efficiency of processing the product, and therefore needs further improvement. Summary of the Invention

[0004] In order to improve the efficiency of removing the residual material column of the injection molded product, the present application provides a residual material removal device for the injection molded product.

[0005] The present application provides a device for removing excess material from injection molded products using the following technical solution:

[0006] A device for removing excess material for injection molded products comprises a frame, a positioning template arranged on the frame, a movable seat connected to the frame for sliding in a direction approaching or away from the positioning template, and a driving mechanism for driving the movable seat to slide, the positioning template is provided with a positioning tooling groove adapted for the injection molded product for placement of the injection molded product, the movable seat is provided with a hot spot leveling mechanism for performing hot melting point leveling treatment on excess material columns on the injection molded product, the hot spot leveling mechanism comprises a thermal contact arranged on the movable seat, a plurality of thermal contacts are provided and are arranged corresponding to the plurality of excess material columns on the injection molded product.

[0007] By adopting the above technical solution, the injection molded product is placed in the positioning tooling groove on the positioning template. After the injection molded product is positioned, the movable seat is driven by the driving mechanism to slide toward the positioning template, so that the multiple thermal contacts on the movable seat correspondingly abut against the multiple residual material columns on the injection molded product. The thermal contacts abut against the residual material columns to perform hot-melt removal processing on the residual material columns, and all the residual material columns on the injection molded product are leveled at one time, thereby improving efficiency and improving the removal efficiency of the residual material columns of the injection molded product.

[0008] Preferably, the hot spot leveling mechanism further comprises a heat conducting plate arranged on the side of the movable seat close to the positioning template and a heating element arranged on the heat conducting plate to heat the heat conducting plate, and the thermal contact comprises a hot spot leveling rod arranged on the heat conducting plate.

[0009] By adopting the above technical solution, the heat conducting plate is heated by the heating element, and the heat conducting plate transfers heat to the point-leveling heating rod, thereby heating the point-leveling heating rod.

[0010] Preferably, a heat-insulating pressure plate that slides in a direction close to or away from the positioning template is provided on the side of the heat-conducting plate close to the positioning template. The heat-insulating pressure plate is used to abut the outer wall of the injection-molded product. The heat-insulating pressure plate is provided with an avoidance groove for the point-leveling heating rod / residual material column of the injection-molded product to pass through. An elastic member is provided between the heat-conducting plate and the heat-insulating pressure plate to force the heat-insulating pressure plate to slide in a direction away from the heat-conducting plate.

[0011] By adopting the above technical solution, when the movable seat drives the heat conduction plate to slide toward the positioning template, it drives the heat insulation pressure plate to slide together. The heat insulation pressure plate first abuts against the injection molded product on the positioning template, and when the movable seat continues to slide, the heat insulation pressure plate slides relative to the heat conduction plate toward the heat conduction plate, and the elastic part undergoes elastic deformation with elastic potential energy. The heat insulation pressure plate plays a role in pressing and fixing the injection molded product during the leveling operation, effectively reducing the possibility of relative sliding between the injection molded product and the positioning template, and improving the leveling accuracy.

[0012] Preferably, the heat conducting plate protrudes and is fixed with a first guide piece that is slidably inserted into the heat insulating pressure plate, and the elastic piece is a spring that is sleeved on the first guide piece, one end of the spring is fixed to the heat conducting plate, and the other end of the spring is fixed to the heat insulating pressure plate.

[0013] By adopting the above technical solution and setting the first guide, the sliding assembly of the heat insulation pressure plate and the heat conduction plate is achieved. The elastic member is a spring, which has good elastic recovery performance and is easy to install.

[0014] Preferably, the heat-insulating pressure plate is provided with a second guide member which is slidably connected to the movable seat.

[0015] By adopting the above technical solution and adding a second guide piece, a sliding connection between the heat insulation pressure plate and the movable seat is achieved, thereby improving the structural stability of the heat insulation pressure plate.

[0016] Preferably, the heat-insulating pressure plate has a blowing channel, and the inner side wall of the avoidance groove is provided with a first blowing air duct connected to the blowing channel. After the heat-insulating pressure plate presses the injection-molded product on the positioning template, the blowing port of the first blowing air duct is opposite to the flat part of the injection-molded product, and the movable seat / heat-insulating pressure plate is provided with an air supply part for blowing the blowing channel.

[0017] By adopting the above technical solution, after the insulation pressure plate presses the injection molded product on the positioning template, the blowing port of the first blowing air duct is opposite to the flat part of the injection molded product, and the blowing operation is performed on the blowing channel through the air supply part. The gas is blown out from the blowing port of the first blowing air duct, and the flat part of the injection molded product and the flat hot rod are blown synchronously. On the one hand, the residual liquid melted by the flat hot rod is blown flat to further improve the flatness of the outer surface of the injection molded product. On the other hand, the molten liquid is cooled by blowing, and the cooling speed of the molten residual liquid is accelerated by air cooling. On the other hand, the lower part of the flat hot rod is blown to blow off the molten liquid attached to the lower end of the flat hot rod, thereby reducing the possibility of the flat hot rod being attached to the molten liquid.

[0018] Preferably, a second blowing duct connected to the blowing channel is opened at one end of the insulation pressing plate close to the positioning template. When the insulation pressing plate abuts against the injection molded product on the positioning template, the injection molded product blocks the blowing port of the second blowing duct.

[0019] By adopting the above technical solution, in the process of the movable seat driving the heat conduction plate to slide toward the positioning template, the heat insulation pressure plate is driven to slide together, and before the heat insulation pressure plate abuts the injection molded product on the positioning template, the air supply part is used to blow the blowing channel, and part of the gas is blown out from the blowing port of the second blowing air duct, thereby blowing the surface of the injection molded product to blow away the dust adhering to the outer surface of the injection molded product, reduce the dust and other impurities adhering to the outer surface of the injection molded product, and improve the cleanliness of the product after the subsequent molten liquid is cooled and solidified; when the heat insulation pressure plate abuts the injection molded product on the positioning template, the injection molded product The injection molded product blocks the blowing port of the second blowing air duct, and all the gas is blown out from the blowing port of the first blowing air duct, and the flattening part and the flattening hot rod of the injection molded product are blown synchronously; in the process of sliding and resetting the movable seat, after the insulation pressure plate is separated from the injection molded product on the positioning template, part of the gas is blown out from the blowing port of the second blowing air duct, and the injection molded product is blown again. On the one hand, the residual liquid melted by the flattening hot rod is blown flat to further improve the flatness of the outer surface of the injection molded product. On the other hand, the molten liquid is cooled by blowing, and the air cooling method is used to accelerate the cooling rate of the molten residual liquid.

[0020] Preferably, the second guide member includes a first sleeve fixedly connected to the movable seat and a second sleeve fixedly connected to the heat insulation pressure plate and slidably sleeved on the first sleeve. The inner cavities of the first sleeve and the second sleeve form a blowing channel. The outer peripheral wall of the first sleeve abuts the inner peripheral wall of the second sleeve. The side wall of the second sleeve is provided with a first air supply hole connected to the first blowing air duct. The side wall of the first sleeve is provided with a first connecting hole for connecting to the first air supply hole. In the initial state, the first connecting hole and the first air supply hole are staggered. When the heat insulation pressure plate is pressed against the injection molded product, the first connecting hole and the first air supply hole are connected.

[0021] By adopting the above technical solution, in the process of the movable seat driving the heat conduction plate to slide toward the positioning template, the heat insulation pressure plate is driven to slide together, and before the heat insulation pressure plate abuts the injection molded product on the positioning template, the first connecting hole and the first air supply hole are misaligned, so that the first blowing air duct is in a blocked state, and the wind from the blowing channel all enters the second blowing air duct to blow the surface of the injection molded product, thereby improving the blowing intensity. When the heat insulation pressure plate is pressed against the injection molded product on the positioning template, the injection molded product blocks the blowing port of the second blowing air duct and the heat insulation pressure plate slides relative to the movable seat, thereby causing the second sleeve and the first sleeve to slide relative to each other, and then the first connecting hole and the first air supply hole are connected, and the gas all enters the first blowing air duct from the first connecting hole and the first air supply hole and is blown out from the blowing port of the first blowing air duct, and the point-leveling part and the point-leveling hot rod of the injection molded product are blown synchronously.

[0022] Preferably, the lower end surface of the second sleeve is provided with a second air supply hole connected to the second blowing air duct, and the lower end surface of the first sleeve is provided with a second connecting hole for connecting to the second air supply hole. The second air supply hole and the second connecting hole are staggered. When the first connecting hole and the first air supply hole are connected, the end surface of the first sleeve abuts against the end surface of the second sleeve, and the first sleeve blocks the second air supply hole.

[0023] By adopting the above technical solution, when the movable seat drives the heat conduction plate to slide toward the positioning template, and before the heat insulation pressing plate contacts the injection molded product on the positioning template, all the gas enters the second blowing air duct through the second connecting hole and the second air supply hole and is blown out from the blowing port of the second blowing air duct, thereby blowing the surface of the injection molded product, blowing away the dust adhering to the outer surface of the injection molded product, reducing the dust and other impurities adhering to the outer surface of the injection molded product, and improving the cleanliness of the product after the subsequent molten liquid is cooled and solidified; when the heat insulation pressing plate is pressed against the positioning template, After the injection molded product is placed, the injection molded product blocks the blowing port of the second blowing air duct, and the end face of the first sleeve abuts against the end face of the second sleeve. The first sleeve blocks the second air supply hole, and all the gas enters the first blowing air duct from the first connecting hole and the first air supply hole and is blown out from the blowing port of the first blowing air duct, and the point-leveling part and the point-leveling hot rod of the injection molded product are blown synchronously; during the sliding and resetting process of the movable seat, after the insulation pressure plate is out of contact with the injection molded product on the positioning template, all the gas is blown out from the blowing port of the second blowing air duct, and the injection molded product is blown again.

[0024] Preferably, the movable seat has an air supply channel, the inner cavity of the first sleeve is connected to the air supply channel, and the air supply member includes a fan arranged on the movable seat to supply air to the air supply channel.

[0025] By adopting the above technical solution, the air supply operation to the air supply channel is achieved through the fan.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] 1. Place the injection molded product in the positioning tooling groove on the positioning template. After the injection molded product is positioned, the driving mechanism drives the movable seat to slide toward the positioning template, so that the multiple thermal contacts on the movable seat correspondingly abut against the multiple residual material columns on the injection molded product. The thermal contacts abut against the residual material columns to perform heat melting and remove the residual material columns. All the residual material columns on the injection molded product are leveled at one time, improving efficiency and improving the removal efficiency of the residual material columns of the injection molded product.

[0028] 2. When the movable seat drives the heat conducting plate to slide toward the positioning template, it drives the heat insulating pressure plate to slide together. The heat insulating pressure plate first comes into contact with the injection molded product on the positioning template. As the movable seat continues to slide, the heat insulating pressure plate slides relative to the heat conducting plate toward the heat conducting plate. The elastic member undergoes elastic deformation and has elastic potential energy. The heat insulating pressure plate presses the injection molded product during the leveling operation, effectively reducing the possibility of relative sliding between the injection molded product and the positioning template, and improving the leveling accuracy.

[0029] 3. After the heat-insulating pressure plate presses the injection molded product on the positioning template, the blowing port of the first blowing air duct is opposite to the flat part of the injection molded product, and the blowing operation is performed on the blowing channel through the air supply part. The gas is blown out from the blowing port of the first blowing air duct, and the flat part of the injection molded product and the flat hot rod are blown synchronously. On the one hand, the residual liquid melted by the flat hot rod is blown flat to further improve the flatness of the outer surface of the injection molded product. On the other hand, the molten liquid is cooled by blowing, and the cooling speed of the molten residual liquid is accelerated by air cooling. On the other hand, the lower part of the flat hot rod is blown to blow off the molten liquid attached to the lower end of the flat hot rod, thereby reducing the possibility of the flat hot rod being attached to the molten liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the overall structure of a residual material removal device for injection molded products in Example 1.

[0031] Figure 2 It is a structural diagram of the hot spot leveling mechanism in Example 1.

[0032] Figure 3 It is a structural diagram of the positioning template in Example 1.

[0033] Figure 4 It is a structural schematic diagram of the thermal contact in Example 1.

[0034] Figure 5 This is a schematic diagram of the state in which the heat-insulating pressing plate is pressed against the injection-molded product in Example 1.

[0035] Figure 6 This is a schematic diagram of the overall structure of a residual material removal device for injection molded products in Example 2.

[0036] Figure 7 It is a schematic diagram of the internal structure of the second guide member and the thermal insulation pressure plate in Example 2.

[0037] Figure 8 yes Figure 7 A local enlarged schematic diagram at point A.

[0038] Explanation of the accompanying drawings: 1. Frame; 11. Workbench; 12. Mounting top plate; 13. Support column; 14. Guide pole; 2. Positioning template; 21. Positioning tooling slot; 22. Positioning hole; 3. Movable seat; 31. Insulated top plate; 32. Air supply channel; 4. Cylinder; 5. Hot spot leveling mechanism; 51. Heat conducting plate; 52. Heating element; 53. Thermal contact; 531. Insulated seat body; 532. Point-leveling hot rod; 54. First guide member; 55. Spring; 6. Insulated pressure plate; 61. Avoidance groove; 62. First blowing air duct; 63. Second blowing air duct; 7. Second guide member; 71. First sleeve; 711. First connecting hole; 712. Second connecting hole; 72. Second sleeve; 721. First air supply hole; 722. Second air supply hole; 8. Fan. DETAILED DESCRIPTION

[0039] The following is combined with Figure 1-8 This application is described in further detail.

[0040] Example 1:

[0041] The present application discloses a device for removing excess material from injection molded products. Figure 1 、 Figure 2 The machine comprises a frame 1, a positioning template 2 mounted on the frame 1, a movable seat 3 vertically connected to the frame 1 for sliding movement, and a driving mechanism for driving the movable seat 3 to slide. The movable seat 3 is located above the positioning template 2. The frame 1 comprises a workbench 11, a plurality of support columns 13 fixedly connected to the upper end surface of the workbench 11, and a mounting top plate 12 fixedly connected to the upper portions of the support columns 13. There are four support columns 13, each located at the four corners of the workbench 11.

[0042] Reference Figure 1 、 Figure 3 The positioning template 2 is fixed to the upper end surface of the workbench 11 by bolts, so as to facilitate the replacement of the positioning template 2 for different injection molded products. The upper end surface of the positioning template 2 is provided with a positioning tooling groove 21 adapted to the injection molded product for the placement of the injection molded product. A guide vertical rod 14 is fixedly connected between the workbench 11 and the mounting top plate 12. The movable seat 3 is located between the workbench 11 and the mounting top plate 12, and the movable seat 3 is slidably sleeved on the guide vertical rod 14. In this embodiment, the driving mechanism is a cylinder 4, the cylinder body of the cylinder 4 is fixedly connected to the upper end surface of the mounting top plate 12, the piston rod of the cylinder 4 is axially arranged vertically, and the piston rod of the cylinder 4 is passed through the mounting top plate 12 and fixedly connected to the upper end surface of the movable seat 3. In other embodiments, the driving mechanism can use a screw transmission method to drive the movable seat 3 to move up and down.

[0043] Reference Figure 2 、 Figure 4The lower end surface of the movable seat 3 is fixedly connected to the insulating top plate 31. The movable seat 3 is equipped with a hot spot leveling mechanism 5 for leveling the hot melt point of the residual material columns on the injection molded product. The hot spot leveling mechanism 5 includes a heat conducting plate 51 disposed below the movable seat 3, a heating element 52 disposed on the heat conducting plate 51 to heat the heat conducting plate 51, and a thermal contact 53 disposed on the heat conducting plate 51. There are multiple thermal contacts 53, and they are arranged corresponding to the multiple residual material columns on the injection molded product. Specifically, the heat conducting plate 51 is bolted to the lower end surface of the insulating top plate 31. Sockets are provided on both sides of the heat conducting plate 51. The heating element 52 is an electric heating rod inserted into the sockets. The thermal contact 53 includes a thermal insulation base 531 fixed to the lower end surface of the heat conducting plate 51 by bolts and a flat heating rod 532 built into the thermal insulation base 531. The upper end of the flat heating rod 532 abuts against the heat conducting plate 51. The heat conducting plate 51 transfers heat to the flat heating rod 532 to heat the flat heating rod 532. The lower end of the flat heating rod 532 protrudes from the thermal insulation base 531 to abut against the residual material column of the injection molded product.

[0044] A vertically sliding heat-insulating pressure plate 6 is provided below the heat-conducting plate 51. The heat-insulating pressure plate 6 is located above the positioning template 2 and is used to abut the outer wall of the injection molded product. The heat-insulating pressure plate 6 is provided with an avoidance groove 61 for the point-leveling heat rod 532 / the residual material column of the injection molded product to pass through. A first guide member 54 is provided on the lower end surface of the heat-conducting plate 51. Specifically, the first guide member 54 is a heat-insulating guide rod fixedly connected to the lower end surface of the heat-conducting plate 51. The heat-insulating guide rod is slidably inserted into the heat-insulating pressure plate 6. An elastic member is provided between the heat-conducting plate 51 and the heat-insulating pressure plate 6 to force the heat-insulating pressure plate 6 to slide away from the heat-conducting plate 51. The elastic member is a spring 55 that is sleeved on the heat-insulating guide rod. One end of the spring 55 is fixed to the lower end surface of the heat-conducting plate 51, and the other end of the spring 55 is fixedly connected to the upper end surface of the heat-insulating pressure plate 6. The upper end surface of the positioning template 2 is provided with a positioning hole 22 for the heat-insulating guide rod to pass through. The heat-insulating pressure plate 6 is provided with a second guide member 7 slidably connected to the movable seat 3 . The second guide member 7 is a connecting guide rod fixedly connected to the upper end surface of the heat-insulating pressure plate 6 . The connecting guide rod is slidably provided through the heat-insulating top plate 31 and the movable seat 3 .

[0045] The implementation principle of the embodiment of this application is: Figure 5, place the injection molded product in the positioning tooling groove 21 on the positioning template 2. After the injection molded product is positioned, the piston rod of the cylinder 4 is extended to drive the movable seat 3 to descend. In the process of the movable seat 3 driving the heat conducting plate 51 to descend, the heat insulating pressure plate 6 is driven to slide together. The heat insulating pressure plate 6 first abuts against the injection molded product on the positioning template 2 to press the injection molded product. In the process of the movable seat 3 continuing to move downward, the heat insulating pressure plate 6 moves upward relative to the heat conducting plate 51, so that the multiple thermal contacts 53 on the movable seat 3 correspondingly abut against the multiple residual material columns on the injection molded product. The lower end of the leveling hot rod 532 abuts against the residual material column to perform hot-melt removal treatment on the residual material column, and all the residual material columns on the injection molded product are leveled at one time to improve efficiency and improve the removal efficiency of the residual material columns of the injection molded product. After the leveling is completed, the piston rod of the cylinder 4 contracts and resets.

[0046] Example 2:

[0047] Reference Figure 5 The difference between this embodiment and embodiment 1 is that, referring to Figure 6 、 Figure 7 The movable seat 3 has an air supply channel 32, and the movable seat 3 is provided with an air supply component for supplying air to the air supply channel 32. Specifically, the air supply component is a fan 8 fixedly connected to the upper end surface of the movable seat 3 and connected to the air supply channel 32 to supply air to the air supply channel 32.

[0048] Reference Figure 7 、 Figure 8 The second guide member 7 includes a first sleeve 71 fixedly penetrated on the lower end surface of the movable seat 3 and a second sleeve 72 fixedly penetrated on the heat insulation pressure plate 6. The axis of the first sleeve 71 is vertically arranged. The first sleeve 71 is penetrated on the heat insulation top plate 31. The upper part of the first sleeve 71 is open so that the inner cavity of the first sleeve 71 is connected to the air supply channel 32. The first sleeve 71 is slidably inserted into the second sleeve 72. The upper part of the second sleeve 72 is open for the first sleeve 71 to slide and insert. The outer peripheral wall of the first sleeve 71 abuts against the inner peripheral wall of the second sleeve 72. The inner cavities of the first sleeve 71 and the second sleeve 72 form a blowing channel.

[0049] The heat-insulating platen 6 has a first blowing air duct 62 and a second blowing air duct 63, and the first blowing air duct 62 is located above the second blowing air duct 63. The blowing port of the first blowing air duct 62 extends to the inner side wall of the avoidance groove 61, and the blowing port of the second blowing air duct 63 extends to the abutment position between the heat-insulating platen 6 and the injection molded product. The side wall of the second sleeve 72 is provided with a first air supply hole 721 connected to the first blowing air duct 62, and the side wall of the first sleeve 71 is provided with a first connecting hole 711 for connecting to the first air supply hole 721. The lower end surface of the second sleeve 72 is provided with a second air supply hole 722 connected to the second blowing air duct 63, so that the second blowing air duct 63 and the inner cavity of the second sleeve 72 are connected, and the lower end surface of the first sleeve 71 is provided with a second connecting hole 712 for connecting to the inner cavity of the second sleeve 72, and the second air supply hole 722 and the second connecting hole 712 are staggered.

[0050] In the initial state, the first connecting hole 711 and the first air supply hole 721 are misaligned, so that the first sleeve 71 blocks the first blowing air duct 62, and the lower end surface of the first sleeve 71 is located above the lower end surface of the second sleeve 72, so that the inner cavities of the first sleeve 71 and the second sleeve 72 are connected. When the heat insulation pressure plate 6 is pressed against the injection molded product, the first connecting hole 711 and the first air supply hole 721 are connected, and the blowing port of the first blowing air duct 62 is relative to the horizontal position of the injection molded product, and the lower end surface of the first sleeve 71 is in contact with the lower end surface of the second sleeve 72. The lower end surface of the first sleeve 71 blocks the second air supply hole 722, thereby blocking the second blowing air duct 63.

[0051] The implementation principle of Example 2 is as follows: after the injection molded product is placed in the positioning tooling groove 21 on the positioning template 2, the piston rod of the cylinder 4 is extended to drive the movable seat 3 to descend. In the process of the movable seat 3 driving the heat conducting plate 51 to descend, the heat insulating pressure plate 6 is driven to slide together, and the fan 8 is started. All the gas passes through the second connecting hole 712, the lower inner cavity of the second sleeve 72, and the second air supply hole 722 in sequence to enter the second blowing air duct 63 and be blown out from the blowing port of the second blowing air duct 63, performing a blowing operation on the surface of the injection molded product, blowing away the dust adhering to the outer surface of the injection molded product, and reducing the adhesion of dust and other impurities to the outer surface of the injection molded product; when the heat insulating pressure plate 6 is pressed against the injection molded product on the positioning template 2, the injection molded product blows the second blowing air duct 63. The air outlet is blocked, and the second sleeve 72 moves upward relative to the first sleeve 71 so that the lower end surface of the first sleeve 71 abuts against the lower end surface of the second sleeve 72, and the first sleeve 71 blocks the second air supply hole 722, thereby blocking the second blowing air duct 63, and the first connecting hole 711 and the first air supply hole 721 are connected, and all the gas enters the first blowing air duct 62 from the first connecting hole 711 and the first air supply hole 721 and is blown out from the blowing port of the first blowing air duct 62, and the flattening part and the flattening hot rod 532 of the injection molded product are blown synchronously; during the sliding and resetting process of the movable seat 3, after the insulation pressure plate 6 is out of contact with the injection molded product on the positioning template 2, all the gas is blown out from the blowing port of the second blowing air duct 63, and the injection molded product is blown again.

[0052] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A device for removing excess material from injection molded products, characterized in that: The invention comprises a frame (1), a positioning template (2) arranged on the frame (1), a movable seat (3) connected to the frame (1) and slidingly connected in a direction close to or away from the positioning template (2), and a driving mechanism for driving the movable seat (3) to slide, wherein the positioning template (2) is provided with a positioning tooling groove (21) adapted for the injection molded product for placement of the injection molded product, the movable seat (3) is provided with a hot spot leveling mechanism (5) for performing hot melting point leveling treatment on the residual material column on the injection molded product, the hot spot leveling mechanism (5) comprises a thermal contact (53) arranged on the movable seat (3), and a plurality of thermal contacts (53) are provided and are arranged corresponding to the plurality of residual material columns on the injection molded product.

2. The device for removing excess material from injection molded products according to claim 1, wherein: The hot spot leveling mechanism (5) further comprises a heat conducting plate (51) arranged on a side of the movable seat (3) close to the positioning template (2) and a heating element (52) arranged on the heat conducting plate (51) to heat the heat conducting plate (51); the thermal contact (53) comprises a hot spot leveling rod (532) arranged on the heat conducting plate (51).

3. The device for removing excess material from injection molded products according to claim 2, wherein: A heat-insulating pressure plate (6) that slides in a direction toward or away from the positioning template (2) is provided on one side of the heat-conducting plate (51) close to the positioning template (2). The heat-insulating pressure plate (6) is used to abut against the outer wall of the injection-molded product. The heat-insulating pressure plate (6) is provided with an avoidance groove (61) for the point-leveling heat rod (532) / the residual material column of the injection-molded product to pass through. An elastic member that forces the heat-insulating pressure plate (6) to slide in a direction away from the heat-conducting plate (51) is provided between the heat-conducting plate (51) and the heat-insulating pressure plate (6).

4. The device for removing excess material from injection molded products according to claim 3, wherein: The heat conducting plate (51) is protruding and fixed with a first guide member (54) which is slidably inserted into the heat insulating pressure plate (6); the elastic member is a spring (55) which is sleeved on the first guide member (54); one end of the spring (55) is fixed to the heat conducting plate (51), and the other end of the spring (55) is fixed to the heat insulating pressure plate (6).

5. The device for removing excess material from injection molded products according to claim 3, wherein: The heat-insulating pressure plate (6) is provided with a second guide member (7) slidably connected to the movable seat (3).

6. The device for removing excess material from injection molded products according to claim 5, characterized in that: The heat-insulating pressing plate (6) has a blowing channel, and the inner side wall of the avoidance groove (61) is provided with a first blowing air channel (62) connected to the blowing channel. After the heat-insulating pressing plate (6) presses the injection molded product on the positioning template (2), the blowing port of the first blowing air channel (62) is opposite to the flat part of the injection molded product, and the movable seat (3) / heat-insulating pressing plate (6) is provided with an air supply part for blowing the blowing channel.

7. The device for removing excess material from injection molded products according to claim 6, wherein: A second blowing air duct (63) connected to the blowing channel is provided at one end of the heat-insulating pressing plate (6) close to the positioning template (2); when the heat-insulating pressing plate (6) abuts against the injection molded product on the positioning template (2), the injection molded product blocks the blowing port of the second blowing air duct (63).

8. The device for removing excess material from injection molded products according to claim 7, characterized in that: The second guide member (7) includes a first sleeve (71) fixedly connected to the movable seat (3) and a second sleeve (72) fixedly connected to the heat-insulating pressure plate (6) and slidably sleeved on the first sleeve (71). The inner cavities of the first sleeve (71) and the second sleeve (72) form a blowing channel. The outer peripheral wall of the first sleeve (71) abuts against the inner peripheral wall of the second sleeve (72). The side wall of the second sleeve (72) is provided with a first air supply hole (721) connected to the first blowing air duct (62). The side wall of the first sleeve (71) is provided with a first connecting hole (711) for connecting to the first air supply hole (721). In the initial state, the first connecting hole (711) and the first air supply hole (721) are offset. When the heat-insulating pressure plate (6) abuts against the injection molded product, the first connecting hole (711) and the first air supply hole (721) are connected.

9. The device for removing excess material from injection molded products according to claim 8, characterized in that: The lower end surface of the second sleeve (72) is provided with a second air supply hole (722) connected to the second blowing air duct (63), and the lower end surface of the first sleeve (71) is provided with a second connecting hole (712) for connecting to the second air supply hole (722). The second air supply hole (722) and the second connecting hole (712) are staggered. When the first connecting hole (711) and the first air supply hole (721) are connected, the end surface of the first sleeve (71) abuts against the end surface of the second sleeve (72), and the first sleeve (71) blocks the second air supply hole (722).

10. The device for removing excess material for injection molded products according to claim 8, characterized in that: The movable seat (3) has an air supply channel (32), the inner cavity of the first sleeve (71) is connected to the air supply channel (32), and the air supply member includes a fan (8) arranged on the movable seat (3) to supply air to the air supply channel (32).

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