Leftover material punching, trimming and forming process and device for appearance processing of injection molded part

Abstract

The invention discloses a rim charge punching, trimming and forming process and device for appearance processing of an injection molded part, and relates to the field of injection molding, in particular to an injection molding machine body, a mold is arranged on one side of the injection molding machine body, an injection molded part is arranged on one side of the mold, and a pressing and cutting mechanism and a pocket mechanism are arranged on the two sides of the mold; the pressing and cutting mechanism comprises supporting brackets arranged on the two sides of the mold, the supporting brackets are arranged in a door shape, a motor is fixedly installed on the inner wall of one side of each supporting bracket, a threaded rod is arranged on one side of each motor and rotationally installed on the inner wall of the corresponding supporting bracket, and two threaded grooves are formed in the surface of each threaded rod; according to the device, structures capable of relatively moving are arranged on the two sides of the mold, injection molding workpieces on the mold are directly cut and collected through movement of the cutter, meanwhile, the cutting position is timely polished and crushed materials are absorbed after cutting, and finishing and forming of the injection molding workpieces are completed at a time.

Description

Technical Field

[0001] The present invention relates to the technical field of injection molding, and more particularly to a process and device for punching and trimming edge material for molding the shape of an injection molded part. Background Art

[0002] Injection molding, also known as injection molding, is a molding method that combines injection and molding. The advantages of the injection molding method are fast production speed, high efficiency, automated operation, shapes that can be from simple to complex, sizes that can be from large to small, and precise product dimensions. The product is easy to update and replace, and is suitable for molding and processing fields such as mass production and complex-shaped products. Injection molding machines are usually required for injection molding during the production process.

[0003] For example, utility model patent CN212147202U discloses a device for processing and recycling waste from injection molding production. It adds components such as a rubber wheel shaft and a spring bolt inside the feed box, which can adapt to injection molding parts of different heights or thicknesses. The blade groove side groove can reduce the accumulation of waste at both ends of the blade groove. The baffle and brush at the lower end of the blade can clean the cut waste into the recycling box.

[0004] The above patent content only feeds the workpiece with the edge material onto the cutting table with a predetermined workpiece range, and uses the blade to cut the excess position, but lacks the direct cutting process of the excess injection molded connector after the injection molding is completed, which affects the finishing and molding efficiency of the injection molded workpiece.

[0005] At the same time, after cutting, there are traces of incomplete cutting and cutting debris on the surface of the injection molded part, and it is impossible to make a coordinated grinding and finishing process for the cutting position of the workpiece, which further affects the finishing and molding efficiency and direct use effect of the injection molded workpiece. Summary of the Invention

[0006] In order to overcome the above-mentioned defects of the prior art, the present invention provides a process and device for punching and trimming the edge material of the injection molded part to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above-mentioned object, the present invention provides the following technical solution: a device for punching and trimming edge materials for processing the shape of injection molded parts, comprising an injection molding machine body, a mold provided on one side of the injection molding machine body, and an injection molded part provided on one side of the mold;

[0008] A pressing and cutting mechanism and a pocketing mechanism are provided on both sides of the mold. The pressing and cutting mechanism includes a support bracket provided on both sides of the mold. The support bracket is provided in a door shape. A motor is fixedly installed on the inner wall of one side of the support bracket. A threaded rod is provided on one side of the motor.

[0009] The threaded rod is rotatably mounted on the inner wall of the support bracket, and two thread grooves are provided on the surface of the threaded rod, and the two thread grooves are symmetrically arranged with each other. The outer wall of the threaded rod is threadedly connected to a first push plate, and the first push plate is slidably mounted on the inner wall of the support bracket, and the first push plate is arranged in a vertical state.

[0010] In a preferred embodiment, a metal joint box is fixedly installed on the bottom of the first push plate, and the metal joint box is arranged in a horizontal state. A sliding block is slidably installed on the inner wall of the metal joint box, and the sliding block is arranged in a vertical state.

[0011] In a preferred embodiment, a cutter is slidably mounted on the inner wall of the sliding block, and the cutter is arranged in a vertical state. A support spring is fixedly mounted on the outer wall of one side of the sliding block, and the support spring is fixedly mounted on the inner wall of the sliding block, and the support spring is arranged in a horizontal state.

[0012] In a preferred embodiment, the pocketing mechanism includes a second push plate threadedly connected to the outer wall of the threaded rod, the second push plate is slidably installed on the inner wall of the support bracket, the second push plate is arranged in a vertical state, the second push plate and the first push plate are arranged corresponding to each other, and a receiving box is fixedly installed on the bottom of the second push plate, the receiving box is arranged in a horizontal state, and the horizontal height of the receiving box is lower than the horizontal height of the cutter.

[0013] In a preferred embodiment, a top support frame is fixedly mounted on the inner wall of the receiving box, and the top support frame is arranged in a vertical state. A sponge board is fixedly mounted on the outer wall of one side of the top support frame, and the sponge board is arranged in a vertical state.

[0014] In a preferred embodiment, a grinding and suction mechanism is provided on one side of the metal joint box, and the grinding and suction mechanism includes a sliding plate slidably installed on the inner wall of the metal joint box, the sliding plate is arranged in a horizontal state, and a fan is fixedly installed on the outer wall of the sliding plate, and the fan is arranged in a horizontal state. A cover tube is fixedly installed on one side of the fan, and multiple impellers are provided on one side of the fan, and the multiple impellers are located on the inner wall of the cover tube, and the multiple impellers are arranged at equal distances. A grinding wheel is fixedly installed on one side of the impeller, and the grinding wheel is arranged in a vertical state. A filter cloth is fixedly installed on the inner wall of the cover tube.

[0015] In a preferred embodiment, a first tooth plate is fixedly installed on the outer wall of one side of the sliding plate, and the first tooth plate is arranged in a horizontal state. The outer wall of the first tooth plate is engaged with a long gear, and the long gear is rotatably installed on the inner wall of the metal belt box, and the long gear is arranged in a vertical state.

[0016] In a preferred embodiment, a second tooth plate is engaged with one side of the long gear, the second tooth plate is fixedly mounted on the outer wall of the cutter, the second tooth plate and the first tooth plate are staggered with each other, and a magnetic plate is fixedly mounted on the outer wall of the cutter.

[0017] The present invention also provides a process for trimming and finishing the edge material of the injection molded part, which specifically includes the steps of fitting, cutting and collecting, and polishing and vacuuming the cut surface, and includes the following steps:

[0018] Step 1: First, place the support bracket on both sides of the mold after injection molding and opening. The motor on the support bracket drives the threaded rod to rotate, and the first push plate and the second push plate move synchronously and relative to each other;

[0019] Step 2: The first push plate drives the metal joint box to make the sliding block move synchronously. At the same time, the support spring squeezes the sliding block to drive the cutter to fit the mold surface. The cutter on one side of the sliding block moves synchronously and approaches to cut the excess injection molding connector edge material on the mold.

[0020] Step 3: The second push plate drives the receiving box close to the bottom area of ​​the mold. At this time, the vertical sponge plate can intercept and catch the cut-off edge material of the injection molded connector;

[0021] Step 4: When the cutter contacts the edge material of the injection molded connector and is forced to move backward, the magnetic plate is driven to adsorb the inner wall of the metal joint box. The cutter drives the second tooth plate to rotate the long gear. The rotation of the long gear drives the first tooth plate to move and drives the sliding plate forward. The sliding plate is forced to move and drives the fan to move synchronously.

[0022] Step 5: The fan starts to drive the impeller to rotate, generating negative pressure and driving the grinding wheel to rotate synchronously to grind the incision position, and absorb the grinding debris and collect it through the filter cloth.

[0023] The technical effects and advantages of the present invention are as follows:

[0024] 1. In order to solve the problems raised in the above-mentioned background technology, the present invention sets a structure that can move relatively on both sides of the mold, and directly cuts the injection molded workpiece on the mold by moving the cutter. After cutting, the collected injection molded connector edge materials are received, blocked and collected by the receiving box that moves synchronously.

[0025] 2. At the same time, there is a structure that can polish the cutting position and absorb the debris in time after cutting, so that the trimming and molding of the injection molded parts can be completed in one go, thereby improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0027] Figure 2 It is a top view of the present invention.

[0028] Figure 3 It is a schematic diagram of the partial structure of the pressing and cutting mechanism in the present invention.

[0029] Figure 4 It is a structural schematic diagram of the pressing and cutting mechanism and the pocketing mechanism in the present invention.

[0030] Figure 5 It is a structural schematic diagram of the grinding and suction mechanism in the present invention.

[0031] Figure 6 It is a partial cross-sectional view of the grinding and suction mechanism in the present invention.

[0032] Figure 7 It is a cross-sectional view of the grinding and suction mechanism in the present invention.

[0033] The accompanying drawings are marked as follows: 1. Injection molding machine body; 2. Mold; 3. Injection molded part; 4. Pressing and cutting mechanism; 41. Support bracket; 42. Motor; 43. Threaded rod; 44. First push plate; 45. Metal joint box; 46. Slide block; 47. Cutter; 48. Support spring; 5. Pocketing mechanism; 51. Second push plate; 52. Receiving box; 53. Top support bracket; 54. Sponge plate; 6. Grinding and suction mechanism; 61. Slide plate; 62. Fan; 63. Cover cylinder; 64. Impeller; 65. Grinding wheel; 66. Filter cloth; 67. First tooth plate; 68. Long gear; 69. Second tooth plate; 610. Magnetic plate. DETAILED DESCRIPTION

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0035] Embodiment 1: The workpiece with the edge material is only fed into the cutting table with a predetermined workpiece range, and the excess position is cut by the blade. However, there is a lack of direct cutting of the excess injection molded connectors after the injection molding is completed, which affects the finishing and molding efficiency of the injection molded workpiece. To solve this problem, the following technical solution is proposed:

[0036] Refer to the instruction manual Figure 1-Figure 7 , a device for punching and trimming the edge of an injection molded part, such as Figure 1 and Figure 2 As shown, it includes an injection molding machine body 1, a mold 2 is provided on one side of the injection molding machine body 1, an injection molded part 3 is provided on one side of the mold 2, and a pressing and cutting mechanism 4 and a pocketing mechanism 5 are provided on both sides of the mold 2;

[0037] like Figure 2 and Figure 3 As shown, the pressing and cutting mechanism 4 includes a support bracket 41 provided on both sides of the mold 2. The support bracket 41 is arranged in a door shape. A motor 42 is fixedly mounted on the inner wall of one side of the support bracket 41. A threaded rod 43 is provided on one side of the motor 42.

[0038] The threaded rod 43 is rotatably mounted on the inner wall of the support bracket 41. Two thread grooves are provided on the surface of the threaded rod 43. The two thread grooves are symmetrically arranged. The outer wall of the threaded rod 43 is threadedly connected to a first push plate 44. The first push plate 44 is slidably mounted on the inner wall of the support bracket 41. The first push plate 44 is arranged in a vertical state. The motor 42 on the support bracket 41 drives the threaded rod 43 to rotate, and the first push plate 44 moves synchronously.

[0039] like Figure 3 and Figure 4 As shown, a metal joint box 45 is fixedly installed at the bottom of the first push plate 44, and the metal joint box 45 is set in a horizontal state. A sliding block 46 is slidably installed on the inner wall of the metal joint box 45, and the sliding block 46 is set in a vertical state. The first push plate 44 drives the metal joint box 45 to make the sliding block 46 move synchronously.

[0040] like Figure 3 and Figure 4 As shown, a cutter 47 is slidably installed on the inner wall of the sliding block 46, and the cutter 47 is set in a vertical state. A support spring 48 is fixedly installed on the outer wall of one side of the sliding block 46, and the support spring 48 is fixedly installed on the inner wall of the sliding block 46. The support spring 48 squeezes the sliding block 46 so that it drives the cutter 47 to completely fit the surface of the mold 2. The support spring 48 is set in a horizontal state, and the cutter 47 on one side of the sliding block 46 moves synchronously and approaches to cut the excess injection molding connector edge material on the mold 2.

[0041] like Figure 3 and Figure 4 As shown, the pocketing mechanism 5 includes a second push plate 51 threadedly connected to the outer wall of the threaded rod 43, the second push plate 51 is slidably installed on the inner wall of the support bracket 41, the second push plate 51 is arranged in a vertical state, the second push plate 51 and the first push plate 44 are arranged corresponding to each other, and a receiving box 52 is fixedly installed at the bottom of the second push plate 51, the receiving box 52 is arranged in a horizontal state, and the horizontal height of the receiving box 52 is lower than the horizontal height of the cutter 47. The rotation of the threaded rod 43 synchronously drives the second push plate 51 to move, and the second push plate 51 drives the receiving box 52 to the area near the bottom of the mold 2.

[0042] like Figure 3 and Figure 4As shown, a top support frame 53 is fixedly installed on the inner wall of the receiving box 52, and the top support frame 53 is arranged in a vertical state. A sponge board 54 is fixedly installed on the outer wall of one side of the top support frame 53, and the sponge board 54 is arranged in a vertical state. The vertical sponge board 54 can intercept and catch the cut-off edge material of the injection molded connector to prevent the edge material of the injection molded connector from being ejected after being cut.

[0043] During specific implementation, the motor 42 on the support bracket 41 drives the threaded rod 43 to rotate, so that the first push plate 44 and the second push plate 51 move synchronously and relatively. The first push plate 44 drives the metal joint box 45 to make the sliding block 46 move synchronously. At the same time, the support spring 48 squeezes the sliding block 46 so that it drives the cutter 47 to completely fit the surface of the mold 2. The cutter 47 on one side of the sliding block 46 moves synchronously and approaches to cut the excess injection molding connector edge material on the mold 2;

[0044] The second push plate 51 drives the receiving box 52 to the area close to the bottom of the mold 2. At this time, the vertical sponge plate 54 can intercept and catch the cut-off edge material of the injection-molded connector to prevent the edge material of the injection-molded connector from being ejected after being cut.

[0045] Embodiment 2: In order to solve the problem that after cutting, the surface of the injection molded part still has traces of incomplete cutting and cutting debris, and it is impossible to perform a coordinated grinding and finishing process on the cutting position of the workpiece, which further affects the finishing and molding efficiency and direct use effect of the injection molded workpiece, the following technical solution is proposed:

[0046] like Figure 6 and Figure 7 As shown, a grinding and suction mechanism 6 is provided on one side of the metal joint box 45. The grinding and suction mechanism 6 includes a sliding plate 61 slidably mounted on the inner wall of the metal joint box 45. The sliding plate 61 is arranged in a horizontal state. A fan 62 is fixedly mounted on the outer wall of the sliding plate 61. The fan 62 is arranged in a horizontal state. The sliding plate 61 is forced to move and drives the fan 62 to move synchronously.

[0047] A cover tube 63 is fixedly installed on one side of the fan 62. Multiple impellers 64 are provided on one side of the fan 62. The multiple impellers 64 are located on the inner wall of the cover tube 63. The multiple impellers 64 are arranged at equal distances. A grinding wheel 65 is fixedly installed on one side of the impeller 64. The grinding wheel 65 is arranged in a vertical state. A filter cloth 66 is fixedly installed on the inner wall of the cover tube 63. When the fan 62 is started, the impeller 64 is driven to rotate to generate negative pressure and drive the grinding wheel 65 to rotate synchronously to grind the incision position, and the polished debris is absorbed and collected through the filter cloth 66.

[0048] like Figure 6 and Figure 7As shown, a first tooth plate 67 is fixedly installed on the outer wall of one side of the sliding plate 61. The first tooth plate 67 is set in a horizontal state. The outer wall of the first tooth plate 67 is engaged with a long gear 68. The long gear 68 is rotatably installed on the inner wall of the metal joint box 45. The long gear 68 is set in a vertical state. The long gear 68 rotates to push the first tooth plate 67 to move, and the first tooth plate 67 drives the sliding plate 61 forward.

[0049] like Figure 6 and Figure 7 As shown, a second tooth plate 69 is engaged with one side of the long gear 68, and the second tooth plate 69 is fixedly mounted on the outer wall of the cutter 47. The second tooth plate 69 and the first tooth plate 67 are staggered with each other. A magnetic plate 610 is fixedly mounted on the outer wall of the cutter 47. When the cutter 47 contacts the edge material of the injection molded connector and is forced to move backward, the cutter 47 drives the magnetic plate 610 to adsorb the inner wall of the metal joint box 45, and the cutter 47 drives the second tooth plate 69 to push the long gear 68 to rotate.

[0050] In a specific implementation, when the cutter 47 contacts the edge material of the injection-molded connector and is forced to move backward, the cutter 47 drives the magnetic plate 610 to adsorb the inner wall of the metal joint box 45, and the cutter 47 drives the second tooth plate 69 to rotate the long gear 68. The rotation of the long gear 68 drives the first tooth plate 67 to move. The first tooth plate 67 drives the sliding plate 61 to move forward. The sliding plate 61 is forced to move and drives the fan 62 to move synchronously.

[0051] The fan 62 starts to drive the impeller 64 to rotate to generate negative pressure and drive the grinding wheel 65 to rotate synchronously to grind the incision position, and absorb the grinding debris through the filter cloth 66 for isolation and collection.

[0052] In summary, based on the coordination of the pressing and cutting mechanism and the pocketing mechanism, structures capable of relative movement are provided on both sides of the mold, and the injection molded workpiece on the mold is directly cut and collected by moving the cutter. At the same time, a grinding and suction mechanism is provided to assist in the timely grinding and absorption of the cutting position after cutting, so that the finishing and molding of the injection molded parts can be completed in one go, thereby improving production efficiency.

[0053] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A device for trimming and shaping edge materials for shaping an injection molded part, comprising an injection molding machine body (1), a mold (2) provided on one side of the injection molding machine body (1), and an injection molded part (3) provided on one side of the mold (2), characterized in that: A pressing and cutting mechanism (4) and a pocketing mechanism (5) are provided on both sides of the mold (2); the pressing and cutting mechanism (4) comprises a support bracket (41) provided on both sides of the mold (2); the support bracket (41) is provided in a door shape; a motor (42) is fixedly mounted on the inner wall of one side of the support bracket (41); a threaded rod (43) is provided on one side of the motor (42); The threaded rod (43) is rotatably mounted on the inner wall of the support bracket (41); two thread grooves are provided on the surface of the threaded rod (43); the two thread grooves are symmetrically arranged; the outer wall of the threaded rod (43) is threadedly connected to a first push plate (44); the first push plate (44) is slidably mounted on the inner wall of the support bracket (41); the first push plate (44) is arranged in a vertical state.

2. The device for punching and trimming the edge material of an injection molded part according to claim 1, characterized in that: A metal joint box (45) is fixedly installed on the bottom of the first push plate (44), and the metal joint box (45) is arranged in a horizontal state. A sliding block (46) is slidably installed on the inner wall of the metal joint box (45), and the sliding block (46) is arranged in a vertical state.

3. The device for punching and trimming the edge material of injection molded parts according to claim 2, characterized in that: A cutter (47) is slidably mounted on the inner wall of the sliding block (46), and the cutter (47) is arranged in a vertical state. A support spring (48) is fixedly mounted on the outer wall of one side of the sliding block (46), and the support spring (48) is fixedly mounted on the inner wall of the sliding block (46), and the support spring (48) is arranged in a horizontal state.

4. The device for punching and trimming the edge material of injection molded parts according to claim 3, characterized in that: The pocketing mechanism (5) comprises a second push plate (51) threadedly connected to the outer wall of the threaded rod (43), the second push plate (51) being slidably mounted on the inner wall of the support bracket (41), the second push plate (51) being arranged in a vertical state, the second push plate (51) and the first push plate (44) being arranged corresponding to each other, a receiving box (52) being fixedly mounted on the bottom of the second push plate (51), the receiving box (52) being arranged in a horizontal state, and the horizontal height of the receiving box (52) being lower than the horizontal height of the cutter (47).

5. The device for punching and trimming the edge material of injection molded parts according to claim 4, characterized in that: A top support frame (53) is fixedly mounted on the inner wall of the receiving box (52), and the top support frame (53) is arranged in a vertical state. A sponge board (54) is fixedly mounted on the outer wall of one side of the top support frame (53), and the sponge board (54) is arranged in a vertical state.

6. The device for punching, trimming and forming edge material for injection molded part contour processing according to claim 3, characterized in that: A grinding and suction mechanism (6) is provided on one side of the metal joint box (45), and the grinding and suction mechanism (6) includes a sliding plate (61) slidably mounted on the inner wall of the metal joint box (45), and the sliding plate (61) is arranged in a horizontal state. A fan (62) is fixedly mounted on the outer wall of the sliding plate (61), and the fan (62) is arranged in a horizontal state. A cover tube (63) is fixedly mounted on one side of the fan (62). A plurality of impellers (64) are provided on one side of the fan (62). The plurality of impellers (64) are located on the inner wall of the cover tube (63). The plurality of impellers (64) are arranged at equal intervals. A grinding wheel (65) is fixedly mounted on one side of the impeller (64). The grinding wheel (65) is arranged in a vertical state. A filter cloth (66) is fixedly mounted on the inner wall of the cover tube (63).

7. The device for punching and trimming the edge material of injection molded parts according to claim 6, characterized in that: A first tooth plate (67) is fixedly mounted on the outer wall of one side of the sliding plate (61), and the first tooth plate (67) is arranged in a horizontal state. A long gear (68) is engaged with the outer wall of the first tooth plate (67), and the long gear (68) is rotatably mounted on the inner wall of the metal belt box (45), and the long gear (68) is arranged in a vertical state.

8. The device for punching, trimming and forming edge material for injection molded parts according to claim 7, characterized in that: A second tooth plate (69) is engaged with one side of the long gear (68), and the second tooth plate (69) is fixedly mounted on the outer wall of the cutter (47). The second tooth plate (69) and the first tooth plate (67) are staggered with each other, and a magnetic plate (610) is fixedly mounted on the outer wall of the cutter (47).

9. A process for trimming and shaping the edge material of an injection molded part, characterized in that: The device for punching, trimming and shaping the edge material of the injection molded part shape processing as described in any one of claims 1 to 8 is used to implement the process, which specifically includes the process of fitting cutting and collecting and the process of grinding and dusting the cut surface.

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