An injection mold for the switch face cover of an automotive handle

Abstract

The present invention relates to an injection mold for an automotive handle switch face cover, which includes an upper panel, a front template, a rear template, a supporting plate, mold feet, and a lower panel. A front mold core is provided inside the front template, and a front injection area is provided on the front mold core. A rear mold core is provided inside the rear template, and a rear injection area is provided on the rear mold core. Two front mold core-pulling mechanisms are provided on the front template, and the two front mold core-pulling mechanisms are respectively located on both sides of the front mold core. Each of the two front mold core-pulling mechanisms includes a fixed seat fixedly connected to the upper panel, a core-pulling block fixedly connected to the front template, and a core-pulling rod. A sliding block is provided on the fixed seat, and an inclined first chute and a second chute are provided on the core-pulling block. The first chute and the second chute are respectively located on the inner and outer sides of the core-pulling block. By adopting the above technical solution, the present invention provides an injection mold for an automotive handle switch face cover, which has good product forming effect, high quality, and stable and fast product structure during shedding.

Description

Technical Field

[0001] The present invention relates to an injection mold, and more particularly to an injection mold for an automotive handle switch face cover. Background Art

[0002] With the progress of technology and the improvement of living standards, automobiles have entered the lives of ordinary people. As a switch for switching the working states of an automobile, such as forward, reverse, or parking, the handle switch plays an important role and is also a component that is frequently touched by the driver. Therefore, the operating feel and touch of the handle switch are particularly important for car buyers. The handle switch includes a face cover and a bottom cover that are separately arranged. After being injection molded by an injection mold respectively, they are assembled. In the production process of traditional injection molds, after the product is formed, due to the undercut of the product, after directly opening the mold, the ejector pin and the lifter are used to eject the product. Then, there is not enough space at the lifter position in the traditional injection mold, resulting in the lifter not reaching the position, and the produced face cover is relatively rough, and the product quality cannot be guaranteed. Moreover, during the demolding process, it is easy to shake, affecting the stability, and often requires rework, resulting in low work efficiency. Summary of the Invention

[0003] The object of the present invention: In order to overcome the defects of the prior art, the present invention provides an injection mold for an automotive handle switch face cover, with good product effect and high quality after molding, and the structure of the product is stable and fast during demolding.

[0004] Technical solution of the present invention: An injection mold for an automotive handle switch face cover, comprising an upper panel, a front template, a rear template, a supporting plate, mold feet and a lower panel. A glue injection port is provided on the upper panel. The front template is located below the upper panel, and a front mold core is provided in the front template. A front injection area is provided on the front mold core. The lower panel is connected to the supporting plate through the mold feet. The supporting plate is connected to the rear template. A rear mold core is provided in the rear template. A rear injection area is provided on the rear mold core. When the front mold core and the rear mold core are closed, the front injection area and the rear injection area form an injection cavity. A ejection mechanism is provided between the lower panel and the supporting plate. A glue injection runner communicating with the glue injection port is provided in the front template. A main runner and sub-runners located at both ends of the main runner are provided in the injection cavity. The main runner communicates with the glue injection runner. Product forming areas are provided on both sides of the sub-runners in the injection cavity. The two sub-runners respectively communicate with the corresponding product forming areas. Two front mold core pulling mechanisms are provided on the front template. The two front mold core pulling mechanisms are respectively located on both sides of the front mold core. Each of the two front mold core pulling mechanisms includes a fixed seat fixedly connected to the upper panel, a core pulling block fixedly connected to the front template and a core pulling rod. A sliding block is provided on the fixed seat. An inclined first chute and a second chute are provided on the core pulling block. The first chute and the second chute are respectively located inside and outside the core pulling block. One end of the core pulling rod is arranged in the first chute, and the other end extends into the product forming area. A first positioning convex block is provided at the end of the core pulling rod extending into the product forming area. The sliding block is slidably arranged in the second chute. Two oppositely arranged retracting blocks and a driving block for driving the two retracting blocks to slide are provided in the rear mold core at the position of the product forming area. The driving block is fixedly connected to the rear mold core. The bottoms of the two retracting blocks are in contact with the driving block. A guiding shaft is fixedly provided on the supporting plate. The two retracting blocks are located on both sides of the guiding shaft and are in guiding sliding cooperation with the guiding shaft. Second positioning convex blocks are provided on the opposite sides of the two retracting blocks. A through groove for the second positioning convex block to extend outside the rear mold core is provided on the rear mold core.

[0005] With the above technical solution, the plastic melt enters from the injection gate and then flows into the product forming cavity through the main runner, and then the plastic melt is ejected to the product forming areas on both sides through the sub-runners for product forming, thereby improving work efficiency. At the same time, when the product is formed, when the mold is opened, the core pulling block slides relative to the fixed seat. Due to the inclined second chute, the two core pulling blocks can move away from each other, and the first positioning convex block disengages from the product forming area and the product. The ejector rod of the external injection molding machine pushes the ejector mechanism upward, first pushes the rear mold to move, drives the two retracting blocks to move upward and move toward each other to disengage from the product, and the ejector mechanism continues to move upward to eject the product, thus solving the problem in the prior art that during the product falling-off process, the product shakes greatly, resulting in poor stability, so there are often rework phenomena, thus unable to meet the continuous production of automotive parts and leading to a reduction in work efficiency. Therefore, it has the characteristics of high work efficiency and good stability.

[0006] Further setting of the present invention: The ejection mechanism includes a lower ejector plate, an upper ejector plate and a plurality of ejector pins. The ejector pins include vertical ejector pins and inclined ejector pins. The lower end of the vertical ejector pin is fixedly connected to the upper ejector plate. The upper end of the vertical ejector pin passes through the driving block and extends into the product forming cavity, and is in contact with the inner top wall of the product. The inclined ejector pin is located on one side of the vertical ejector pin. The lower end of the inclined ejector pin is fixedly connected to the lower ejector plate through a connecting block, and the upper end extends into the product forming area and is in contact with the inner top wall of the product.

[0007] With the above further setting, the product is ejected from multiple angles by multiple ejector pins, which is faster. The upper end of the inclined ejector pin integrally forms an ejection block, which has a large contact area with the product, and the structure is more stable and efficient during ejection. A retraction rod is provided on the lower panel, and this retraction rod can quickly reset the lower ejector plate and the upper ejector plate, facilitating the closing of the front mold and the rear mold and the re - forming of the product. Therefore, the working efficiency is improved.

[0008] Another further setting of the present invention: It further includes a first locking mechanism. The first locking mechanism includes a reset rod, a slider, two pressure bars and a guiding block. The lower end of the reset rod is fixed on the upper ejector plate, and the upper end of the reset rod extends on the rear template. A boss is provided on the inner side wall of the reset rod. The two pressure bars are located on both sides of the slider and are in contact with the slider. The pressure bars are fixed on the rear template. The guiding block is fixedly arranged on the supporting plate. An inclined first guiding chute is provided on the guiding block. A first guiding convex block is correspondingly provided on the slider. The first guiding slider slides in the first guiding chute and, when sliding to the top of the first guiding chute, the slider disengages from the boss and the rear template stops sliding.

[0009] With the above another further setting, when the ejection mechanism moves upward, it drives the reset rod to slide. The boss on the reset rod drives the slider to slide in the first guiding chute. Because the first guiding chute is inclined, when the slider slides upward and is located at the top of the first guiding chute, the slider separates from the boss, and the movement of the rear mold stops. The ejection plate continues to move upward to drive the reset rod and the ejector pins upward to eject the formed product in the product forming area. When the rear mold moves, it will drive the retraction block to move, realizing unlocking and separating from the product, reducing the vibration and offset generated by the high pressure or high - speed operation during the injection molding process of the mold, enhancing the stability and service life of the mold, ensuring product consistency, ensuring the accurate position of the mold, and being able to ensure the consistency of the products in size and shape for each injection molding.

[0010] Another even further setting of the present invention: Inclined second guiding convex blocks are provided on both sides of the guiding shaft, and correspondingly inclined second guiding chutes are provided on the retraction blocks to drive the two retraction blocks to move towards each other when sliding upward and move away from each other when sliding downward.

[0011] Further setting: On the opposite sides of the two retracting blocks, there are also extension blocks. The second positioning convex block is integrally provided on the extension block. The extension block is located in the through groove, and there are several grooves on the extension block on one side of the second positioning convex block.

[0012] With the above further setting, when the rear mold moves upward, it drives the two retracting blocks to move towards each other and separate from the product, facilitating the subsequent ejection of the product.

[0013] The further setting of the present invention: It further includes a second latch mechanism. The second latch mechanism includes a first connecting rod, a second connecting rod, a positioning member, and a positioning shaft. The first connecting rod is fixedly connected to the upper panel, and the second connecting rod is fixedly connected to the rear template. An outer cover is fixedly provided on the front template. The positioning shaft and the positioning member are located inside the outer cover. There is an arc-shaped groove on the positioning member, and the end of the positioning shaft is located in the arc-shaped groove. There is a space on the outer cover for the first connecting rod and the second connecting rod to slide. The positioning member is located on one side of the connecting rod. There is a pressing block on the lower end of the first connecting rod near one side of the positioning member. There is a first inclined surface on the pressing block. There is a hook portion on the upper end of the second connecting rod. There is a relief groove on the positioning member. There is a second inclined surface on the relief groove. When the first connecting rod slides upward, the first inclined surface contacts the second inclined surface and can drive the positioning member to rotate around the positioning shaft. When closing the mold, the hook portion hooks on the positioning member. There is a return spring on the positioning shaft for resetting the positioning member.

[0014] With the above further setting, when opening the mold, during the process of the upper panel moving and driving the first connecting rod to move upward, the first inclined surface on the lower end of the first connecting rod contacts the second inclined surface of the positioning member. When the first connecting rod continues to move, it can drive the positioning member to rotate around the positioning shaft, vacating space for the second connecting rod to slide. The setting of the latch makes the position accurate when the mold opens and closes, and when closing the mold for injection molding, it can be tightly closed, preventing the mold from separating under the injection pressure, ensuring the accuracy and quality of the injection-molded product. The outer cover hides the latch mechanism, making it more beautiful. Two second latch mechanisms are provided, respectively located on both sides of the mold, and the structure is more stable when opening and closing the mold.

[0015] The further setting of the present invention: An inclined guide post is fixedly provided on the lower panel. The inclined guide post is located on one side of the inclined ejector pin. There is a sliding block on the inclined ejector pin. The sliding block slides on the inclined guide post. There is an inclined third guiding chute on the connecting block. The sliding block slides in the third guiding chute.

[0016] With the above further setting, the inclined guide post plays an auxiliary and guiding role, reducing the force on the inclined ejector pin, making its structure firm and having a long service life. The sliding block slides synchronously with the inclined ejector pin and slides along the inclined guide post, being more stable.

[0017] A further improvement of the present invention: The two runner channels are arranged in a horn shape. Concave cavities are provided on the rear mold core corresponding to the positions of the two runner channels. Two fixing blocks are arranged in the concave cavities. Accommodating grooves are provided on the opposite sides of the two fixing blocks. The runner channels are located in the accommodating grooves. Through holes for the ends of the runner channels to extend out are provided on the fixing blocks corresponding to the product forming area.

[0018] With the above further improvement, the stability is good, enabling the precise injection of the plastic melt, and the formed product is more beautiful.

[0019] A further improvement of the present invention: It further includes a first circulating water path and a second circulating water path. The first circulating water path is arranged in the front mold core. The first circulating water path includes a first water inlet pipe, a first water outlet pipe, and a first water flow path. The first water flow path includes two first upper flow paths arranged in parallel, a first lower flow path, and a connecting flow path connecting the first upper flow path and the first lower flow path. The connecting flow path is arranged vertically. The first lower flow path is located outside the product forming area. One ends of the two first upper flow paths are connected to the connecting flow path, and the other ends are connected to the first water inlet pipe or the first water outlet pipe. The ends of the first water inlet pipe and the first water outlet pipe are exposed outside the front template. The second circulating water path is arranged in the rear mold core. The second circulating water path includes a second water inlet pipe, a second water outlet pipe, and a second water flow path. The second water flow path is arranged in a "U" shape and is connected to the second water inlet pipe and the second water outlet pipe at both ends respectively. The ends of the second water inlet pipe and the second water outlet pipe are exposed outside the rear template.

[0020] With the above further improvement, through the setting of water circulation, the surface heat of the product can be effectively reduced, enabling the product to be quickly cooled and formed, preventing overheating inside, resulting in slow production of finished products, greatly accelerating the production speed of finished products, improving work efficiency, and the first lower flow path and the second water flow path are located on the outer periphery of the product forming area, further improving the cooling effect. The first water flow path is arranged in two layers, extending the path of the water flow channel without affecting the work of the front mold core pulling mechanism and other structures, and the overall structure layout is reasonable.

[0021] A further improvement of the present invention: Skid plates are fixedly arranged on both sides of the sliding block. Fourth guiding grooves are arranged on both sides of the third guiding groove on the connecting block. The skid plates slide in the fourth guiding grooves. The fourth guiding grooves are inclined. A connecting card slot and a connecting block located in the connecting card slot are arranged on the sliding block. The lower end of the inclined ejector pin is inserted into the connecting card slot, and a horizontal slot is opened corresponding to the position of the connecting block. The connecting block is clamped in the horizontal slot.

[0022] With the above further settings, the inclination direction of the fourth guiding groove is the same as that of the third guiding groove, both inclined from the inner side to the outer side and from top to bottom. During the upward movement of the ejector plate, the sliding plate slides in the fourth guiding chute, driving the two inclined ejector pins to move upward and towards each other, ejecting the product from the rear mold core. The structure between the inclined ejector pins and the slider is convenient to install and does not affect the stability between the two at the same time. Description of the Drawings

[0023] Figure 1 Schematic structural diagram of a specific embodiment of the present invention;

[0024] Figure 2 Internal schematic diagram of a specific embodiment of the present invention;

[0025] Figure 3 Schematic diagram of the rear mold core and the first latch mechanism of a specific embodiment of the present invention;

[0026] Figure 4 Schematic diagram of the front mold core-pulling mechanism of a specific embodiment of the present invention;

[0027] Figure 5 Schematic diagram of the retractable block and the second circulating water channel of a specific embodiment of the present invention;

[0028] Figure 6 Schematic diagram of the retractable block and the vertical ejector pin of a specific embodiment of the present invention;

[0029] Figure 7 Schematic diagram of the first latch mechanism of a specific embodiment of the present invention;

[0030] Figure 8 Schematic diagram of the convex platform of a specific embodiment of the present invention;

[0031] Figure 9 Schematic diagram of the second latch mechanism of a specific embodiment of the present invention;

[0032] Figure 10 Schematic diagram of the positioning member of a specific embodiment of the present invention;

[0033] Figure 11 Schematic diagram of the positioning member and the positioning shaft of a specific embodiment of the present invention;

[0034] Figure 12 Schematic diagram of the two connecting rods of a specific embodiment of the present invention;

[0035] Figure 13 Schematic diagram of the inclined ejector pin and the inclined guide pillar of a specific embodiment of the present invention;

[0036] Figure 14 Exploded view of the connecting seat and the inclined ejector pin of a specific embodiment of the present invention;

[0037] Figure 15 Schematic diagram of the rear mold core and the main runner in a specific embodiment of the present invention;

[0038] Figure 16 Schematic diagram of the rear mold core in a specific embodiment of the present invention;

[0039] Figure 17 Schematic diagram of the cooperation between the fixing block and the sub - runner in a specific embodiment of the present invention;

[0040] Figure 18 Schematic diagram of the second circulation waterway in a specific embodiment of the present invention;

[0041] Figure 19 Schematic diagram of the first circulation waterway in a specific embodiment of the present invention;

[0042] Figure 20 Schematic diagram of the front template and the front mold core in a specific embodiment of the present invention.

[0043] In the figure, 1. upper panel; 11. glue injection port; 2. front template; 21. front mold core; 211. front injection area; 22. injection runner; 23. main runner; 24. sub - runner; 25. front mold core pulling mechanism; 251. fixing seat; 2511. sliding block; 252. core pulling block; 2521. first chute; 2522. second chute; 253. core pulling rod; 2531. first positioning convex block; 26. outer cover; 3. rear template; 31. rear mold core; 311. rear injection area; 32. retraction block; 321. second positioning convex block; 323. extension block; 3231. groove; 33. driving block; 34. through - slot; 35. concave cavity; 351. fixing block; 4. supporting plate; 41. guiding shaft; 411. second guiding convex block; 5. mold feet; 6. lower panel; 61. inclined guide post; 7. ejecting mechanism; 71. lower ejector plate; 72. upper ejector plate; 73. ejector pin; 731. vertical ejector pin; 732. inclined ejector pin; 7321. sliding block; 7322. sliding plate; 74. connecting block; 741. third guiding chute; 742. fourth guiding chute; 8. first latch mechanism; 81. reset rod; 811. convex platform; 82. slider; 821. first guiding convex block; 83. pressing strip; 84. guiding block; 841. first guiding chute; 9. second latch mechanism; 91. first connecting rod; 911. pressing block; 9111. first inclined surface; 92. second connecting rod; 921. hooking part; 93. positioning part; 931. arc groove; 932. relief groove; 9321. second inclined surface; 94. positioning shaft; 10. first circulation waterway; 101. first water inlet pipe; 102. first water outlet pipe; 103. first water flow path; 1031. first upper water flow path; 1032. first lower water flow path; 1033. connecting water flow path; 20. second circulation waterway; 201. second water inlet pipe; 202. second water outlet pipe; 203. second water flow path. Detailed implementation mode

[0044] The technical solutions in the present embodiment will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts belong to the scope of protection of the present invention.

[0045] It should be noted that in the description of the present invention, all directional indications (such as up, down, front, back...) are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If this specific posture changes, the directional indications will also change accordingly.

[0046] In addition, in the present invention, descriptions such as "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. In the description of the present invention, the meaning of "several" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0047] In addition, the technical solutions between various embodiments of the present invention can be combined with each other, but it must be based on the fact that those skilled in the art can implement them. When the combination of technical solutions conflicts with each other or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0048] Such as Figure 1-20As shown in the figure, an injection mold for an automotive handle switch face cover includes an upper panel 1, a front template 2, a rear template 3, a support plate 4, mold feet 5, and a lower panel 6. Mold guide posts are provided at the four corners of the rear template 3, and the rear template 3 is connected to the front template 2 through the mold guide posts. The support plate 4 is also connected to the rear mold core 31 through the mold guide posts; a glue injection port 11 is provided on the upper panel 1. The front template 2 is located below the upper panel 1, and a front mold core 21 is provided inside the front template 2. A front injection area 211 is provided on the front mold core 21. The lower panel 6 is connected to the support plate 4 through the mold feet 5. The support plate 4 is connected to the rear template 3. A rear mold core 31 is provided inside the rear template 3. A rear injection area 311 is provided on the rear mold core 31. When the front mold core 21 and the rear mold core 31 are closed, the front injection area 211 and the rear injection area 311 form an injection cavity. An ejection mechanism 7 is provided between the lower panel 6 and the support plate 4. A glue injection runner communicated with the glue injection port 11 is provided inside the front template 2. A main runner 23 and two sub-runners 24 located at both ends of the main runner 23 are provided inside the injection cavity. The main runner 23 is communicated with the glue injection runner. Product forming areas are provided on both sides of the sub-runners 24 inside the injection cavity. The two sub-runners 24 are respectively communicated with the corresponding product forming areas. Two front mold core pulling mechanisms 25 are provided on the front template 2. The two front mold core pulling mechanisms 25 are respectively located on both sides of the front mold core 21. Each of the two front mold core pulling mechanisms 25 includes a fixed seat 251 fixedly connected to the upper panel 1, a core pulling block 252 fixedly connected to the front template 2, and a core pulling rod 253. A sliding block 2511 is provided on the fixed seat 251. An inclined first chute 2521 and a second chute 2522 are provided on the core pulling block 252. The first chute 2521 and the second chute 2522 are respectively located inside and outside the core pulling block 252. One end of the core pulling rod 253 is arranged in the first chute 2521, and the other end extends into the product forming area. A first positioning convex block 2531 is provided at the end of the core pulling rod 253 extending into the product forming area. The sliding block 2511 is slidably arranged in the second chute 2522. Two relatively arranged retracting blocks 32 and a driving block 33 for driving the two retracting blocks 32 to slide are provided at the position of the product forming area inside the rear mold core 31. The driving block 33 is fixedly connected to the rear mold core 31. The bottoms of the two retracting blocks 32 are in contact with the driving block 33. A guiding shaft 41 is fixedly provided on the support plate 4. The two retracting blocks 32 are located on both sides of the guiding shaft 41 and are in guiding sliding fit with the guiding shaft 41. A second positioning convex block 321 is provided on the opposite sides of the two retracting blocks 32. A through groove 34 for the second positioning convex block 321 to extend outside the rear mold core 31 is provided on the rear mold core 31. The plastic melt enters from the injection port, then the main runner 23 flows into the product forming cavity, and then the plastic melt is ejected to the product forming areas on both sides through the sub-runners 24 for product forming, thereby improving work efficiency. At the same time, when the product is formed, when the front mold core pulling mechanism 25 opens the mold, the core pulling block 252 slides relative to the fixed seat 251. Due to the inclined second chute 2522, the two core pulling blocks 252 can move away from each other.The first positioning bump 2531 disengages from the product forming area and the product. The ejector rod of the external injection molding machine pushes the ejector pin 73 mechanism upward, first pushing the rear mold to move, driving the two retraction blocks 32 to move upward and move towards each other, disengaging from the product. The ejector pin 73 mechanism continues to move upward to eject the product, thus solving the problem in the prior art that during the product shedding process, the product shakes greatly, resulting in poor stability, so there are often rework phenomena, thus unable to meet the continuous production of automotive parts and leading to a reduction in work efficiency. Therefore, it has the characteristics of high work efficiency and good stability.

[0049] The ejection mechanism 7 includes a lower ejector plate 71, an upper ejector plate 72 and a plurality of ejector pins 73. The ejector pins 73 include a vertical ejector pin 731 and an inclined ejector pin 732. The lower end of the vertical ejector pin 731 is fixedly connected to the upper ejector plate 72. The upper end of the vertical ejector pin 731 passes through the driving block 33 and extends into the product molding cavity, and is set in contact with the inner top wall of the product. The driving block 33 slides outside the vertical ejector pin 731, which can make the driving block 33 slide. The structure is stable and has a guiding effect, and it can also save space and have a standardized layout. The inclined ejector pin 732 is located on the vertical ejector pin 731. The lower end of the inclined ejector pin 732 is fixedly connected to the lower ejector plate 71 through a connecting block 74, and the upper end extends into the product molding area and is arranged to abut against the inner top wall of the product. The product is ejected from multiple angles through a variety of ejectors 73, which is faster. The upper end of the inclined ejector pin 732 is integrally formed with an ejection block, which has a large contact area with the product. The structure is more stable and efficient during ejection. A return rod is provided on the lower panel 6, which can quickly reset the lower ejector plate 71 and the upper ejector plate 72, facilitate the closing of the front mold and the rear mold, and the product is molded again, thereby improving work efficiency. The lower panel 6 is fixedly provided with an inclined guide column 61, and the inclined guide column 61 is located on one side of the inclined ejector pin 732. The inclined ejector pin 732 is provided with a sliding block 7321, and the sliding block 7321 is slidably arranged on the inclined guide column 61. The connecting block 74 is provided with an inclined third guide slot 741, and the sliding block 7321 slides in the third guide slot 741. The inclined guide column 61 plays an auxiliary and guiding role, reducing the force on the inclined ejector pin 732, making its structure firm and having a long service life. The slider 82 slides synchronously with the inclined ejector pin 732 and slides along the inclined guide column 61, which is more stable; slide plates 7322 are fixedly provided on both sides of the sliding block 7321, and fourth guide slots 742 are provided on both sides of the third guide slot 741 on the connecting block 74. The slide plate 7322 slides in the fourth guide slot 742, and the fourth guide slot 742 is tilted. The sliding block 7321 is provided with a connecting slot and a connecting block located in the connecting slot. The lower end of the inclined ejector pin 732 is inserted in the connecting slot, and a transverse slot is provided at the corresponding connecting block position. The connecting block is clamped in the transverse slot. The inclination direction of the fourth guide slot is consistent with the third guide slot, and both are inclined from the inside to the outside, and from top to bottom. In the process of the ejector pin 73 plate moving upward, the slide plate 7322 slides in the fourth guide slot 742, driving the two inclined ejector pins 732 to move upward and toward each other, ejecting the product from the rear mold core 31. The structure between the inclined ejector pin 732 and the slide block 82 is easy to install without affecting the stability between the two.

[0050] It further includes a first latch mechanism 8, and the first latch mechanism 8 includes a reset rod 81, a slider 82, two pressing strips 83 and a guide block 84. The lower end of the reset rod 81 is fixed on the upper ejector plate 72, and the upper end of the reset rod 81 extends on the rear template 3. A boss 811 is provided on the inner side wall of the reset rod 81. The two pressing strips 83 are located on both sides of the slider 82 and are in contact with the slider 82. The pressing strips 83 are fixed on the rear template 3. The guide block 84 is fixedly arranged on the supporting plate 4. An inclined first guiding chute 841 is provided on the guide block 84. A first guiding convex block 821 is correspondingly provided on the slider 82. The first guiding slider 82 slides in the first guiding chute 841. When it slides to the top of the first chute 2521, the slider 82 disengages from the boss 811 and the rear template 3 stops sliding. When the ejecting mechanism 7 moves upward, it drives the reset rod 81 to slide. The boss 811 on the reset rod 81 drives the first guiding convex block 821 to slide in the first guiding chute 841. Since the first guiding chute 841 is inclined, the slider 82 slides upward and when the first guiding convex block 821 is at the top of the first guiding chute 841, the slider 82 separates from the boss 811 and the rear mold stops sliding. The ejector plate continues to move upward to drive the reset rod 81 and the ejector pin 73 upward to eject the molded product in the product forming area. When the rear mold moves, it drives the retracting block 32 to move to achieve unlatching and separation from the product, reducing the vibration and offset generated by high pressure or high-speed operation during the injection molding process of the mold, enhancing the stability and service life of the mold, ensuring product consistency, ensuring the accurate position of the mold, and ensuring the consistency of the products in size and shape for each injection molding.

[0051] On both sides of the guide shaft 41, there are inclined second guiding convex blocks 411. Corresponding inclined second guiding chutes are provided on the retracting blocks 32 to drive the two retracting blocks 32 to move towards each other when sliding upward and move away from each other when sliding downward; on the opposite sides of the two retracting blocks 32, there are also extension blocks 323. The second positioning convex block 321 is integrally arranged on the extension block 323. The extension block 323 is located in the through groove 34. And on the extension block 323, several grooves 3231 are provided on the side of the second positioning convex block 321. When the rear mold moves upward, it drives the two retracting blocks 32 to move towards each other and separate from the product, facilitating the subsequent ejection of the product.

[0052] It further includes a second locking mechanism 9, and the second locking mechanism 9 includes a first connecting rod 91, a second connecting rod 92, a positioning member 93 and a positioning shaft 94. The first connecting rod 91 is fixedly connected to the upper panel 1, and the second connecting rod 92 is fixedly connected to the rear template 3. An outer cover 26 is fixedly provided on the front template 2. The positioning shaft 94 and the positioning member 93 are located inside the outer cover 26, and an arc-shaped groove 931 is provided on the positioning member 93. The end of the positioning shaft 94 is located inside the arc-shaped groove 931. A space for the first connecting rod 91 and the second connecting rod 92 to slide is provided on the outer cover 26. The positioning member 93 is located on one side of the connecting rod. A pressing block 911 is provided on the lower end of the first connecting rod 91 near the positioning member 93. A first inclined surface 9111 is provided on the pressing block 911. A hooking portion 921 is provided on the upper end of the second connecting rod 92. A relief groove 932 is provided on the positioning member 93, and a second inclined surface 9321 is provided on the relief groove 932. When the first connecting rod 91 slides upward, the first inclined surface 9111 contacts the second inclined surface 9321 and can drive the positioning member 93 to rotate around the positioning shaft 94. When the mold is closed, the hooking portion 921 is hooked on the positioning member 93. A return spring for resetting the positioning member 93 is provided on the positioning shaft 94. When the mold is opened, during the process that the upper panel 1 moves upward to drive the first connecting rod 91, the first inclined surface 9111 on the lower end of the first connecting rod 91 contacts the second inclined surface 9321 of the positioning member 93. When the first connecting rod 91 continues to move, it can drive the positioning member 93 to rotate around the positioning shaft 94 to vacate a space for the second connecting rod 92 to slide. The setting of the locking mechanism enables the mold to have accurate positions during mold opening and closing, and during mold closing and injection molding, it can be tightly closed to prevent the mold from separating under the injection pressure, ensuring the precision and quality of the injection molded product. The outer cover 26 hides the locking mechanism, making it more beautiful. Two second locking mechanisms 9 are provided, respectively located on both sides of the mold, and the structure is more stable during mold opening and closing.

[0053] The two runner channels 24 are arranged in a horn shape. Cavities 35 are provided on the rear mold core 31 corresponding to the positions of the two runner channels 24. Two fixing blocks 351 are provided in the cavities 35. Accommodating grooves 3511 are provided on the opposite sides of the two fixing blocks 351. The runner channels 24 are located in the accommodating grooves 3511. Through holes for the ends of the runner channels 24 to extend out are provided on the fixing blocks 351 corresponding to the product forming areas. It has good stability, enables the plastic melt to be accurately injected, and the formed product is more beautiful.

[0054] It further includes a first circulation waterway 10 and a second circulation waterway. The first circulation waterway 10 is arranged in the front mold core 21. The first circulation waterway includes a first water inlet pipe 101, a first water outlet pipe 102 and a first water flow channel 103. The first water flow channel 103 includes two first upper flow channels 1031 and first lower flow channels 1032 arranged in parallel and a connecting flow channel 1033 connecting the first upper flow channel 1031 and the first lower flow channel 1032. The connecting flow channel 1033 is arranged vertically. The first lower flow channel 1032 is located outside the product forming area. One ends of the two first upper flow channels 1031 are connected to the connecting flow channel 1033, and the other ends are connected to the first water inlet pipe 101 or the first water outlet pipe 102. The ends of the first water inlet pipe 101 and the first water outlet pipe 102 are exposed outside the front template 2. The second circulation waterway is arranged in the rear mold core 31. The second circulation waterway 20 includes a second water inlet pipe 201, a second water outlet pipe 202 and a second water flow channel 203. The second water flow channel 203 is arranged in a "U" shape and is respectively connected to the second water inlet pipe 201 and the second water outlet pipe 202 at both ends. The ends of the second water inlet pipe 201 and the second water outlet pipe 202 are exposed outside the rear template 3. Through the setting of water circulation, the surface heat of the product can be effectively reduced, so that the product can be quickly cooled and formed, preventing overheating inside, resulting in slow finished products, greatly accelerating the finished product speed, improving work efficiency, and the first lower flow channel 1032 and the second water flow channel 203 are located on the outer periphery of the product forming area, further improving the cooling effect. The first water flow channel 103 is arranged in two layers, extending the path of the water flow channel without affecting the work of the front mold core pulling mechanism 25 and other structures, and the overall structure layout is reasonable.

Claims

1. An injection mold for the surface cover of an automotive handle switch, comprising an upper panel (1), a front template (2), a rear template (3), a support plate (4), mold feet (5), a lower panel (6) and an ejection mechanism (7). A glue injection port (11) is provided on the upper panel (1), a front mold core (21) is provided inside the front template (2), and a rear mold core (31) is provided inside the rear template (3). When the front mold core (21) and the rear mold core (31) are closed, an injection cavity is formed. It is characterized in that, The front template (2) is provided with a glue injection runner communicating with the glue injection port (11). There are two product forming areas in the injection molding chamber. The front template (2) is provided with two front mold core-pulling mechanisms (25). The two front mold core-pulling mechanisms (25) are respectively located on both sides of the front mold core (21). Each of the two front mold core-pulling mechanisms (25) includes a fixed seat (251) fixedly connected to the upper panel (1), a core-pulling block (252) fixedly connected to the front template (2), and a core-pulling rod (253). The fixed seat (251) is provided with a sliding block (2511). The core-pulling block (252) is provided with an inclined first chute (2521) and a second chute (2522). The first chute (2521) and the second chute (2522) are respectively located on the inner and outer sides of the core-pulling block (252). One end of the core-pulling rod (253) is arranged in the first chute (2521), and the other end extends into the product forming area. And a first positioning convex block (2531) is arranged at the end of the core-pulling rod (253) extending into the product forming area. The sliding block (2511) is slidably arranged in the second chute (2522). Two relatively arranged retracting blocks (32) are arranged at the positions of the product forming areas in the rear mold core (31). The two retracting blocks (32) slide synchronously with the rear template (3). A guiding shaft (41) is fixedly arranged on the supporting plate (4). The two retracting blocks (32) are located on both sides of the guiding shaft (41) and are in guiding sliding fit with the guiding shaft (41). The ejecting mechanism (7) includes a lower ejector plate (71), an upper ejector plate (72), and a plurality of ejector pins (73). The ejector pin (73) includes a vertical ejector pin (731) and an inclined ejector pin (732). The lower end of the vertical ejector pin (731) is fixedly connected to the upper ejector plate (72). The upper end of the vertical ejector pin (731) passes through the driving block (33) and extends into the product forming cavity and abuts against the inner top wall of the product. The inclined ejector pin (732) is located on one side of the vertical ejector pin (731). The lower end of the inclined ejector pin (732) is fixedly connected to the lower ejector plate (71) through a connecting block (74), and the upper end extends into the product forming area and abuts against the inner top wall of the product.

2. The injection mold for the handle switch face cover of an automobile according to claim 1, characterized in that, It further includes a first latch mechanism (8), and the first latch mechanism (8) includes a reset rod (81), a slider (82), two pressing strips (83) and a guiding block (84). The lower end of the reset rod (81) is fixed on the upper ejector plate (72), and the upper end of the reset rod (81) extends onto the rear template (3). A boss (811) is provided on the inner side wall of the reset rod (81). The two pressing strips (83) are located on both sides of the slider (82) and are in contact with the slider (82). The pressing strips (83) are fixed on the rear template (3). The guiding block (84) is fixedly arranged on the supporting plate (4). An inclined first guiding chute (841) is provided on the guiding block (84). A first guiding protrusion (821) is correspondingly provided on the slider (82). The first guiding slider (82) is slidably arranged in the first guiding chute (841), and when it slides to the top of the second guiding chute (841), the slider (82) disengages from the boss (811), and the rear template (3) stops sliding.

3. The injection mold for the handle switch face cover of an automobile according to claim 1 or 2, characterized in that, On both sides of the guiding shaft (41), inclined second guiding protrusions (411) are provided. On the retracting block (32), correspondingly, inclined second guiding chutes are provided to drive the two retracting blocks (32) to move towards each other when sliding upwards and to move away from each other when sliding downwards.

4. An injection mold for an automotive handle switch face cover according to claim 1 or 2, characterized in that, It further includes a second latch mechanism (9), and the second latch mechanism (9) includes a first connecting rod (91), a second connecting rod (92), a positioning member (93) and a positioning shaft (94). The first connecting rod (91) is fixedly connected to the upper panel (1), and the second connecting rod (92) is fixedly connected to the rear template (3). An outer cover (26) is fixedly provided on the front template (2). The positioning shaft (94) and the positioning member (93) are located inside the outer cover (26), and an arc-shaped groove (931) is provided on the positioning member (93). The end of the positioning shaft (94) is located inside the arc-shaped groove (931). A space for the first connecting rod (91) and the second connecting rod (92) to slide is provided on the outer cover (26). The positioning member (93) is located on one side of the connecting rod. A pressing block (911) is provided on the lower end of the first connecting rod (91) close to one side of the positioning member (93). A first inclined surface (9111) is provided on the pressing block (911). A hooking portion (921) is provided on the upper end of the second connecting rod (92). A relief groove (932) is provided on the positioning member (93). A second inclined surface (9321) is provided on the relief groove (932). When the first connecting rod (91) slides upwards, the first inclined surface (9111) contacts the second inclined surface (9321) and can drive the positioning member (93) to rotate around the positioning shaft (94). When closing the mold, the hooking portion (921) is hooked on the positioning member (93), and a reset spring for resetting the positioning member (93) is provided on the positioning shaft (94).

5. The injection mold for the handle switch face cover of an automobile according to claim 1 or 2, characterized in that, The lower panel (6) is fixedly provided with a lifter pin (61), the lifter pin (61) is located on one side of the angled ejector pin (732), a sliding block (7321) is arranged on the angled ejector pin (732), the sliding block (7321) is slidably arranged on the lifter pin (61), the connecting block (74) is provided with an inclined third guiding chute (741), and the sliding block (7321) slides within the third guiding chute (741).

6. The injection mold for the handle switch face cover of an automobile according to claim 1 or 2, characterized in that, The two sub-gates (24) are arranged in a horn shape. The cavity (35) corresponding to the positions of the two sub-gates (24) is arranged on the rear mold core (31). Two fixing blocks (351) are arranged in the cavity (35). Accommodating grooves are arranged on the opposite sides of the two fixing blocks (351). The sub-gates (24) are located in the accommodating grooves. Through holes for the ends of the sub-gates (24) to extend out are arranged on the fixing blocks (351) corresponding to the product forming area.

7. An injection mold for an automotive handle switch face cover according to claim 1 or 2, characterized in that, Extension blocks (323) are arranged on the opposite sides of the two retraction blocks (32). Second positioning protrusions (321) are integrally arranged on the extension blocks (323). A through groove (34) is arranged on the rear mold core (31). The extension blocks (323) are located in the through groove (34). The second positioning protrusions (321) pass through the through groove (34) and extend outside the rear mold core (31). A plurality of grooves (3231) are arranged on the extension blocks (323) on one side of the second positioning protrusions (321).

8. An injection mold for an automotive handle switch face cover according to claim 1 or 2, characterized in that, It further includes a first circulating water channel (10) and a second circulating water channel. The first circulating water channel (10) is arranged in the front mold core (21). The first circulating water channel includes a first water inlet pipe (101), a first water outlet pipe (102) and a first water flow channel (103). The first water flow channel (103) includes two first upper flow channels (1031) arranged in parallel, a first lower flow channel (1032) and a connecting flow channel (1033) connecting the first upper flow channel (1031) and the first lower flow channel (1032). The connecting flow channel (1033) is arranged vertically. The first lower flow channel (1032) is located outside the product forming area. One ends of the two first upper flow channels (1031) are connected to the connecting flow channel (1033), and the other ends are connected to the first water inlet pipe (101) or the first water outlet pipe (102). The ends of the first water inlet pipe (101) and the first water outlet pipe (102) are exposed outside the front template (2). The second circulating water channel is arranged in the rear mold core (31). The second circulating water channel (20) includes a second water inlet pipe (201), a second water outlet pipe (202) and a second water flow channel (203). The second water flow channel (203) is arranged in a "U" shape and is connected to the second water inlet pipe (201) and the second water outlet pipe (202) at both ends respectively. The ends of the second water inlet pipe (201) and the second water outlet pipe (202) are exposed outside the rear template (3).

9. The injection mold for the car handle switch face cover according to claim 5, characterized in that Sliding plates (7322) are fixedly arranged on both sides of the sliding block (7321). Fourth guiding chutes (742) are arranged on both sides of the third guiding chute (741) on the connecting block (74). The sliding plates (7322) slide in the fourth guiding chutes (742). The fourth guiding chutes (742) are inclined. A connecting clamping groove and a connecting clamping block located in the connecting clamping groove are arranged on the sliding block (7321). The lower end of the inclined ejector pin (732) is inserted into the connecting clamping groove, and a transverse groove is formed at a position corresponding to the connecting clamping block. The connecting clamping block is clamped in the transverse groove.

Images