Injection molding device for producing automobile wire harness connector

Abstract

The invention relates to the technical field of injection molding, and discloses an injection molding device for producing an automobile wire harness connector, the injection molding device comprises an operation table, a bottom mold, a molding groove and a gas injection assembly, the bottom mold is mounted at the top of the operation table, the molding groove is formed in the upper surface of the bottom mold, the gas injection assembly is arranged in the bottom mold, and a lifting frame is mounted at the top of the operation table; a top die is slidably connected into the lifting frame. The interior of the square groove is pressurized when the inserting plate slides towards the interior of the square groove, so that the equipment can demold a mold in the molding groove through positive pressure generated in the square groove after injection molding, and the problem that a molded part is bonded with the molding groove 5 to cause damage during demolding is avoided; and meanwhile, the formed injection molding part can be cooled in time in a gas injection mode, so that the hardness of a material of the injection molding part after demolding is rapidly increased, the problem that the injection molding part deforms due to mechanical demolding is avoided, and it is ensured that the injection molding part keeps a specified shape after demolding.

Description

Technical Field

[0001] The invention relates to the technical field of injection molding, in particular to an injection molding device for producing automobile wiring harness connectors. Background Art

[0002] At a time when the automotive industry is booming, automotive wiring harness connectors are extremely critical components in automotive electrical systems, and their production quality and efficiency are of vital importance. Traditional automotive wiring harness connector injection molding devices face many challenges in the production process.

[0003] There is often a strong adhesion between the injection molded parts and the mold cavity, which can easily cause damage to the injection molded parts during demolding, especially for automotive wiring harness connectors with high surface quality requirements and fine structures. Demolding damage will directly lead to an increase in product scrap rate and increase production costs. Traditional demolding methods mostly rely on mechanical ejection, which not only causes great wear and tear on the mold, but also makes it difficult to ensure the stability and reliability of demolding. Traditional devices have low cooling efficiency after injection molding, which makes the injection molded parts still in a relatively soft state after demolding, and are easily deformed by external forces, making it impossible to ensure that the injection molded parts can maintain the specified shape.

[0004] To this end, an injection molding device for producing an automobile wiring harness connector is proposed. Summary of the invention

[0005] The object of the present invention is to provide an injection molding device for producing an automobile wiring harness connector to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an injection molding device for producing automotive wiring harness connectors, comprising an operating table, a bottom mold, a molding groove and an air injection component, wherein the bottom mold is installed on the top of the operating table, the molding groove is arranged on the upper surface of the bottom mold, and the air injection component is arranged inside the bottom mold; a lifting frame is installed on the top of the operating table, and a top mold is slidably connected inside the lifting frame; a plug plate is symmetrically fixedly connected to the bottom of the top mold; square grooves are symmetrically opened on the top of the bottom mold, and the square grooves and the plug plate are adapted; a slider is slidably connected to the inside of the bottom mold; a ventilation groove is opened on the outer wall of the slider; a first spring is fixedly connected between the side of the slider away from the molding groove and the inner wall of the bottom mold; a cross plate is fixedly connected inside the square groove, and a slide rod is fixedly connected to the bottom of the cross plate.

[0007] Preferably, the square groove is slidably connected to a first square plate inside, the first square plate is symmetrically slidably connected to a first tooth plate inside, a hollow gear is rotatably connected between the first tooth plates and inside the first square plate, the hollow gear is meshed with the first tooth plate, an end of the first tooth plate away from the hollow gear is fixedly connected to a clamping plate, a side of the clamping plate close to the hollow gear is fixedly connected to a second spring between the inner wall of the first square plate, an air inlet hole is opened inside the bottom mold and below the first square plate, and the end of the air inlet hole away from the first square plate is connected to the outside of the bottom mold.

[0008] Preferably, a lifting assembly is provided inside the bottom mold, and the lifting assembly includes a bidirectional motor installed inside the bottom mold, a disc is installed on the top of the bidirectional motor, a first gear is installed on the bottom of the disc, a push plate is fixedly connected to the upper surface of the disc in a circular array, a first gear rod is rotatably connected to the bottom of the inner cavity of the bottom mold, a telescopic plate is fixedly connected to the top of the first gear rod, both ends of the telescopic plate are rotatably connected to fixed seats, the end of the fixed seat away from the telescopic plate is rotatably connected to a round rod, and a second gear is fixedly connected to the outer wall of the round rod close to the telescopic plate, and the second gear is meshed with the first gear.

[0009] Preferably, a carrier plate is slidably connected inside the bottom mold and below the forming groove, a hollow tube is symmetrically fixedly connected to the bottom of the carrier plate, a convex plate is fixedly connected to the bottom of the outer wall of the hollow tube, a third spring is fixedly connected between the bottom end of the hollow tube and the inner wall of the bottom mold, the hollow tube is slidably connected to the inside of the bottom mold, the inside of the hollow tube is threadedly connected to the second gear rod, a worm is provided at the end of the round rod away from the second gear, and the worm is meshed with the bottom end of the second gear rod.

[0010] Preferably, a sliding assembly is provided inside the bottom mold, and the sliding assembly includes a slide groove slidably connected to the inside of the bottom mold, a second square plate adapted to the slide groove is fixedly connected to the lower surface of the top mold, a trapezoidal plate is slidably connected inside the bottom mold and below the slide groove, a fourth spring is fixedly connected between the top of the trapezoidal plate and the inner cavity of the bottom mold, a second tooth plate is slidably connected to the inside of the bottom mold, the second tooth plate is meshed with the first tooth rod, and the bottom of the trapezoidal plate is an inclined surface.

[0011] Preferably, a through slot adapted to the first spring is provided inside the plug plate, and helical teeth are linearly distributed and fixedly connected inside the through slot of the first spring, and the helical teeth are engaged with the outer wall of the clamping plate.

[0012] Preferably, a thread groove is provided on the inner wall of the hollow gear, the slide rod is threadedly connected to the thread groove on the inner wall of the hollow gear, and the vent groove is in a closed state when the slide block is in contact with the inner wall of the bottom mold close to the molding groove.

[0013] Preferably, the bottom of the convex plate fits with the top of the disc, and the round rod is movably connected to the inside of the bottom mold.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. By increasing the pressure inside the square groove when the plug plate slides into the inside of the square groove, the equipment can demould the mold inside the molding groove through the positive pressure generated inside the square groove after injection molding, avoiding the problem of damage caused by the bonding of the molded part and the molding groove during demoulding. At the same time, the molded injection molded part can be cooled in time by gas injection, so that the hardness of the injection molded part material increases rapidly after demoulding, avoiding the problem of deformation of the injection molded part due to mechanical demoulding, and ensuring that the injection molded part maintains the specified shape after demoulding.

[0015] 2. The carrier plate slides back and forth in the vertical direction to drive the molded injection molded parts to vibrate inside the molding groove, so that the molded injection molded parts can be quickly demolded from the molding groove. At the same time, the vibration can disrupt the relatively fixed orientation of the plastic molecular chain during the cooling process, avoiding large internal stress concentration caused by excessive local crystallization, and improving the material strength of the injection molded parts after molding.

[0016] 3. By lifting the molded injection molded parts through the carrier plate, the staff can check the appearance of the injection molded parts in time, and it is convenient for the operator to collect the injection molded parts. Through the time-sharing engagement of the second gear and the first gear, a single drive source can realize the demoulding and lifting of the molded injection molded parts, which improves the efficiency of the equipment in the post-molding processing of injection molding materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the present invention; Figure 2 It is a partial schematic diagram of the top mold structure of the present invention; Figure 3 For the present invention Figure 2 A schematic diagram of the structure enlargement in the middle; Figure 4 It is a partial schematic diagram of the bottom mold structure of the present invention; Figure 5 It is a schematic cross-sectional view of the interior of the bottom mold structure of the present invention; Figure 6 It is a partial schematic diagram of the structure of the gas injection assembly of the present invention; Figure 7 It is a schematic diagram of a partial explosion of the gas injection assembly structure of the present invention; Figure 8 It is a partial exploded schematic diagram of the lifting assembly structure of the present invention; Fig. 9 For the present invention Figure 8 A magnified schematic diagram of the structure at B in the middle; Fig.10For the present invention Figure 8 A magnified schematic diagram of the structure at C in the middle; Fig.11 It is a schematic cross-sectional view of the sliding assembly structure of the present invention.

[0018] In the figure: 1. Operating table; 2. Lifting frame; 3. Bottom mold; 4. Top mold; 5. Forming tank; 6. Gas injection assembly; 7. Lifting assembly; 8. Sliding assembly; 61. Insert plate; 62. Square groove; 63. Sliding block; 64. First spring; 65. Ventilation groove; 66. Horizontal plate; 67. First square plate; 68. First tooth plate; 69. Clamping plate; 610. Hollow gear; 611. Second spring; 612. Sliding rod; 613. Air inlet; 71, bidirectional motor; 72, disc; 73, first gear; 74, first gear rod; 75, telescopic plate; 76, fixed seat; 77, round rod; 78, second gear; 79, worm; 710, second gear rod; 711, hollow tube; 712, carrier plate; 713, third spring; 714, convex plate; 81. Second square plate; 82. Slide groove; 83. Trapezoidal plate; 84. Fourth spring; 85. Second tooth plate. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0020] Embodiments of the present invention See also Figures 1 to 7 , an injection molding device for producing automotive wiring harness connectors, comprising an operating table 1, a bottom mold 3, a molding groove 5 and an injection assembly 6, the bottom mold 3 is installed on the top of the operating table 1, the molding groove 5 is arranged on the upper surface of the bottom mold 3, the injection assembly 6 is arranged inside the bottom mold 3, a lifting frame 2 is installed on the top of the operating table 1, a top mold 4 is slidably connected inside the lifting frame 2, a plug plate 61 is symmetrically fixedly connected to the bottom of the top mold 4, a square groove 62 is symmetrically opened on the top of the bottom mold 3, the square groove 62 and the plug plate 61 are adapted, a slider 63 is slidably connected inside the bottom mold 3, a ventilation groove 65 is opened on the outer wall of the slider 63, a first spring 64 is fixedly connected between the side of the slider 63 away from the molding groove 5 and the inner wall of the bottom mold 3, a cross plate 66 is fixedly connected inside the square groove 62, and a slide bar 612 is fixedly connected to the bottom of the cross plate 66.

[0021] The square groove 62 is slidably connected to the inside of the first square plate 67, and the first tooth plate 68 is symmetrically slidably connected to the inside of the first square plate 67. A hollow gear 610 is rotatably connected between the first tooth plates 68 and located inside the first square plate 67. The hollow gear 610 is meshed with the first tooth plate 68. The end of the first tooth plate 68 away from the hollow gear 610 is fixedly connected to a clamping plate 69. A second spring 611 is fixedly connected between the side of the clamping plate 69 close to the hollow gear 610 and the inner wall of the first square plate 67. An air inlet hole 613 is opened inside the bottom mold 3 and below the first square plate 67. The end of the air inlet hole 613 away from the first square plate 67 is connected to the outside of the bottom mold 3.

[0022] A through groove matched with the first spring 64 is provided inside the insert plate 61, and the inside of the through groove of the first spring 64 is linearly distributed and fixedly connected with helical teeth, which are clamped with the outer wall of the clamping plate 69. A threaded groove is provided on the inner wall of the hollow gear 610, and the sliding rod 612 is threadedly connected to the threaded groove on the inner wall of the hollow gear 610. When the sliding block 63 is in contact with the inner wall of the bottom mold 3 close to the molding groove 5, the ventilation groove 65 is in a closed state.

[0023] In actual use of the embodiment of the present invention, the staff controls the equipment to perform injection molding inside the molding groove 5. After the injection molding inside the molding groove 5 is completed, the staff controls the top mold 4 to move downward inside the lifting frame 2 and close the bottom mold 3. During the downward movement of the top mold 4, the insert plate 61 is driven to move downward together. As the top mold 4 moves downward, the insert plate 61 is inserted into the inside of the square groove 62. After the inclined surface at the bottom of the insert plate 61 contacts the slider 63, it pushes the slider 63 to slide inside the bottom mold 3 toward the side close to the molding groove 5. When the slider 63 is close to the first spring After one side of 64 is completely fitted with the outer wall of the insert plate 61, the first spring 64 is stretched and elastically extended, and the slider 63 will block the forming groove 5 at the same time. The oblique teeth of the through groove on the inner wall of the insert plate 61 will squeeze the clamping plate 69, so that the clamping plate 69 slides relatively close to the inside of the first square plate 67. The insert plate 61 continues to move downward to generate positive pressure in the inner cavity of the square groove 62. The first square plate 67 is fitted to the bottom surface of the insert plate 61 through the clamping connection between the outer wall of the clamping plate 69 and the oblique teeth of the insert plate 61. At this time, the forming groove 5 forms a closed space under the joint action of the slider 63 and the top mold 4.

[0024] Then, the injection molding material is molded inside the molding groove 5 by high temperature and high pressure. After the injection molding, the staff controls the top mold 4 to lift up. After the top mold 4 moves upward, the insert plate 61 will drive the first square plate 67 to move upward together by the clamping connection with the clamping plate 69. When the side wall of the insert plate 61 no longer squeezes the slider 63, the slider 63 will slide inside the bottom mold 3. At this time, the positive pressure generated inside the square groove 62 will cause the internal cavity gas to be injected into the molding groove 5 through the first spring 64 to prevent the injection molded part from adhering to the bottom mold 3, so as to realize the demoulding of the injection molded part formed inside the molding groove 5. When the first square plate 67 slides upward to fit with the cross plate 66, the slide bar 612 will slide inside the hollow gear 610 and drive the hollow gear 610 to rotate through the threaded connection. The rotation of the hollow gear 610 drives the clamping plate 69 to slide relatively close, thereby releasing the clamping state of the insert plate 61 and the clamping plate 69, and the first square plate 67 slides down to the initial state under the action of its own gravity.

[0025] By increasing the pressure inside the square groove 62 when the insert plate 61 slides into the square groove 62, the equipment can demould the mold inside the molding groove 5 through the positive pressure generated inside the square groove 62 after injection molding, thereby avoiding the problem of the molded part being bonded to the molding groove 5 and causing damage during demoulding. At the same time, the molded injection molded part can be cooled in time by gas injection, so that the hardness of the material of the injection molded part increases rapidly after demoulding, avoiding the problem of deformation of the injection molded part due to mechanical demoulding, and ensuring that the injection molded part maintains the specified shape after demoulding.

[0026] See also Figures 8 to 11 A lifting assembly 7 is provided inside the bottom mold 3, and the lifting assembly 7 includes a bidirectional motor 71 installed inside the bottom mold 3, a disc 72 is installed on the top of the bidirectional motor 71, a first gear 73 is installed at the bottom of the disc 72, and a push plate is fixedly connected to the upper surface of the disc 72 in a circular array, and a first gear rod 74 is rotatably connected to the bottom of the inner cavity of the bottom mold 3, and a telescopic plate 75 is fixedly connected to the top of the first gear rod 74, and both ends of the telescopic plate 75 are rotatably connected to a fixed seat 76, and the end of the fixed seat 76 away from the telescopic plate 75 is rotatably connected to a round rod 77, and the outer wall of the round rod 77 is fixedly connected to the side of the telescopic plate 75, and the second gear 78 is meshed with the first gear 73.

[0027] A carrier plate 712 is slidably connected inside the bottom mold 3 and located below the molding groove 5. A hollow tube 711 is symmetrically fixedly connected to the bottom of the carrier plate 712. A convex plate 714 is fixedly connected to the bottom of the outer wall of the hollow tube 711. A third spring 713 is fixedly connected between the bottom end of the hollow tube 711 and the inner wall of the bottom mold 3. The hollow tube 711 is slidably connected to the inside of the bottom mold 3. The internal thread of the hollow tube 711 is connected to the second gear rod 710. A worm 79 is provided at one end of the round rod 77 away from the second gear 78. The worm 79 and the bottom end of the second gear rod 710 are meshed. The bottom of the convex plate 714 fits with the top of the disc 72, and the round rod 77 is movably connected to the inside of the bottom mold 3.

[0028] A sliding assembly 8 is provided inside the bottom mold 3, and the sliding assembly 8 includes a slide groove 82 slidably connected to the inside of the bottom mold 3, a second square plate 81 adapted to the slide groove 82 is fixedly connected to the lower surface of the top mold 4, a trapezoidal plate 83 is slidably connected inside the bottom mold 3 and below the slide groove 82, a fourth spring 84 is fixedly connected between the top of the trapezoidal plate 83 and the inner cavity of the bottom mold 3, a second tooth plate 85 is slidably connected inside the bottom mold 3, the second tooth plate 85 is meshed with the first tooth rod 74, and the bottom of the trapezoidal plate 83 is an inclined surface.

[0029] When the embodiment of the present invention is actually used: when the top mold 4 begins to separate from the bottom mold 3, the bidirectional motor 71 inside the equipment runs and drives the disc 72 and the first gear 73 to start rotating. During the rotation, the disc 72 will intermittently push the convex plate 714 upward through the push plate on its top. The movement of the convex plate 714 drives the hollow tube 711 and the carrier plate 712 to move together. The third spring 713 repeatedly switches between the stretched and elastically restored states, and the carrier plate 712 slides back and forth in the vertical direction to drive the molded injection molded part to vibrate inside the molding groove 5, so that the molded injection molded part can be quickly demolded from the molding groove 5. At the same time, the vibration can disrupt the relatively fixed orientation of the plastic molecular chain during the cooling process, avoid large internal stress concentration due to excessively rapid local crystallization, and improve the material strength of the injection molded part after molding.

[0030] When the top die 4 moves upward, the second square plate 81 will move upward together, and the fourth spring 84 will elastically contract to drive the trapezoidal plate 83 and the slide groove 82 to move upward together inside the bottom die 3. After the trapezoidal plate 83 moves upward, the inclined surface at the bottom no longer squeezes the second tooth plate 85. The second tooth plate 85 slides inside the bottom die 3 to drive the first tooth bar 74 meshing with it to rotate. After the first tooth bar 74 rotates, it will pull the round rods 77 at both ends of the telescopic plate 75 above it closer to each other, and make the second gear 78 mesh with the first gear 73. When the first gear 73 rotates, it will pass through the second gear 78 and the round rod 77. The worm gear 79 drives the second gear rod 710 to start rotating. The second gear rod 710 rotates so that the hollow tube 711 connected to the outer wall of the second gear rod 710 starts to slide upward. The upward sliding of the hollow tube 711 drives the molded injection molded part to gradually lift out of the bottom mold 3. The molded injection molded part is lifted by the carrier plate 712, so that the staff can check the appearance of the injection molded part in time, and it is convenient for the operator to collect the injection molded part. Through the time-sharing engagement of the second gear 78 and the first gear 73, a single driving source can realize the demoulding and lifting of the molded injection molded part, thereby improving the work efficiency of the equipment in the post-molding processing of the injection molded material.

[0031] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An injection molding device for producing automotive wiring harness connectors, comprising an operating table (1), a bottom mold (3), a molding groove (5) and an air injection component (6), characterized in that: The bottom mold (3) is mounted on the top of the operating table (1), the molding groove (5) is arranged on the upper surface of the bottom mold (3), the gas injection assembly (6) is arranged inside the bottom mold (3), a lifting frame (2) is mounted on the top of the operating table (1), a top mold (4) is slidably connected inside the lifting frame (2), a plug plate (61) is symmetrically fixedly connected at the bottom of the top mold (4), a square groove (62) is symmetrically opened at the top of the bottom mold (3), the square groove (62) and the plug plate (61) are matched, a slider (63) is slidably connected inside the bottom mold (3), a ventilation groove (65) is opened on the outer wall of the slider (63), a first spring (64) is fixedly connected between the side of the slider (63) away from the molding groove (5) and the inner wall of the bottom mold (3), a horizontal plate (66) is fixedly connected inside the square groove (62), and a slide bar (612) is fixedly connected at the bottom of the horizontal plate (66).

2. The injection molding device for producing automotive wiring harness connectors according to claim 1, characterized in that: The square groove (62) is slidably connected to a first square plate (67) inside, and the first square plate (67) is symmetrically slidably connected to a first tooth plate (68) inside. A hollow gear (610) is rotatably connected between the first tooth plates (68) and inside the first square plate (67). The hollow gear (610) is meshed with the first tooth plate (68). An end of the first tooth plate (68) away from the hollow gear (610) is fixedly connected to a clamping plate (69). A second spring (611) is fixedly connected between a side of the clamping plate (69) close to the hollow gear (610) and an inner wall of the first square plate (67). An air inlet hole (613) is provided inside the bottom mold (3) and below the first square plate (67). An end of the air inlet hole (613) away from the first square plate (67) is connected to the outside of the bottom mold (3).

3. The injection molding device for producing automotive wiring harness connectors according to claim 1, characterized in that: A lifting assembly (7) is arranged inside the bottom mold (3), and the lifting assembly (7) comprises a bidirectional motor (71) installed inside the bottom mold (3); a disc (72) is installed on the top of the bidirectional motor (71); a first gear (73) is installed on the bottom of the disc (72); a push plate is fixedly connected to the upper surface of the disc (72) in a circular array; a first gear rod (74) is rotatably connected to the bottom of the inner cavity of the bottom mold (3); a telescopic plate (75) is fixedly connected to the top of the first gear rod (74); both ends of the telescopic plate (75) are rotatably connected to fixed seats (76); one end of the fixed seat (76) away from the telescopic plate (75) is rotatably connected to a round rod (77); a second gear (78) is fixedly connected to the outer wall of the round rod (77) on the side close to the telescopic plate (75); the second gear (78) and the first gear (73) are meshed.

4. The injection molding device for producing automotive wiring harness connectors according to claim 3, characterized in that: A carrier plate (712) is slidably connected inside the bottom mold (3) and below the molding groove (5); a hollow tube (711) is symmetrically fixedly connected to the bottom of the carrier plate (712); a convex plate (714) is fixedly connected to the bottom of the outer wall of the hollow tube (711); a third spring (713) is fixedly connected between the bottom end of the hollow tube (711) and the inner wall of the bottom mold (3); the hollow tube (711) is slidably connected to the inside of the bottom mold (3); a second gear rod (710) is threadedly connected to the inside of the hollow tube (711); a worm (79) is provided at one end of the round rod (77) away from the second gear (78); the worm (79) is meshed with the bottom end of the second gear rod (710).

5. The injection molding device for producing automotive wiring harness connectors according to claim 3, characterized in that: A sliding assembly (8) is arranged inside the bottom mold (3), and the sliding assembly (8) comprises a slide groove (82) slidably connected to the inside of the bottom mold (3); a second square plate (81) adapted to the slide groove (82) is fixedly connected to the lower surface of the top mold (4); a trapezoidal plate (83) is slidably connected inside the bottom mold (3) and below the slide groove (82); a fourth spring (84) is fixedly connected between the top of the trapezoidal plate (83) and the inner cavity of the bottom mold (3); a second tooth plate (85) is slidably connected inside the bottom mold (3), and the second tooth plate (85) is meshed with the first tooth rod (74); and the bottom of the trapezoidal plate (83) is an inclined surface.

6. The injection molding device for producing automotive wiring harness connectors according to claim 2, characterized in that: A through slot adapted to the first spring (64) is provided inside the insert plate (61), and helical teeth are linearly arranged and fixedly connected inside the through slot of the first spring (64), and the helical teeth are clamped to the outer wall of the clamp plate (69).

7. The injection molding device for producing automotive wiring harness connectors according to claim 2, characterized in that: The inner wall of the hollow gear (610) is provided with a threaded groove, the slide rod (612) is threadably connected to the threaded groove on the inner wall of the hollow gear (610), and the venting groove (65) is in a closed state when the slide block (63) is in contact with the inner wall of the bottom mold (3) at a side close to the molding groove (5).

8. The injection molding device for producing automotive wiring harness connectors according to claim 4, characterized in that: The bottom of the convex plate (714) fits with the top of the disc (72), and the round rod (77) is movably connected to the inside of the bottom mold (3).

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