Injection mold for rearview mirror shell

Abstract

The injection mold comprises an upper mold plate, a movable mold plate, a static mold plate, mold feet, a lower mold plate and an ejection mechanism, a glue injection opening is formed in the upper mold plate, a core pulling structure is arranged on the static mold plate, and the core pulling structure comprises a fixing base, an air cylinder, a sliding block, a first core pulling block and a second core pulling block. The fixed seat is fixedly arranged on the outer side face of the static mold plate, a first sliding groove is formed in the fixed seat, a second sliding groove communicated with the first sliding groove is formed in the static mold plate, the end of the sliding block, the end of the first core pulling block and the end of the second core pulling block extend into the injection molding cavity, and the air cylinder is fixedly arranged at the end, away from the static mold plate, of the fixed seat. And an output shaft of the air cylinder is connected with the sliding block so as to drive the sliding block, the first core pulling block and the second core pulling block to slide in the two sliding grooves. By the adoption of the technical scheme, the injection mold for the rearview mirror shell is simple in core pulling structure, convenient and rapid to operate and capable of achieving rapid core pulling, and a formed product is good in effect and high in quality.

Description

Technical Field

[0001] This invention relates to the field of injection mold technology, and in particular to an injection mold for a rearview mirror housing. Background Technology

[0002] With the rapid development of the automotive industry, vehicle safety and exterior design have become key focuses for manufacturers and consumers. As a crucial component of vehicle safety, the rearview mirror not only adjusts the viewing angle but also plays a vital role in the vehicle's exterior design. The rearview mirror housing, as the external protective structure of the rearview mirror, needs to possess high strength and durability while also meeting the requirements of a refined exterior design.

[0003] In traditional rearview mirror housing production, injection molding technology is typically used to shape plastic materials using molds. However, existing rearview mirror housing molds suffer from drawbacks during production. The large curved structure of the rearview mirror housing makes demolding difficult, and the core-pulling mechanism is complex and inconvenient to operate. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art. This invention provides an injection mold for a rearview mirror housing. The core-pulling structure is simple, the operation is convenient and quick, and it can achieve rapid core pulling. Moreover, the molded product has good effect and high quality.

[0005] The technical solution of this invention: An injection mold for a rearview mirror housing, comprising an upper mold plate, a moving mold plate, a stationary mold plate, mold feet, a lower mold plate, and an ejection mechanism. The upper mold plate has a glue inlet, the moving mold plate contains a moving mold core, and the stationary mold plate has a stationary mold core. When the moving mold core and the stationary mold core are closed, they form an injection cavity. The glue inlet communicates with the injection cavity. The stationary mold plate has a core-pulling structure, comprising a fixed seat, a cylinder, a slider, a first core-pulling block, and a second core-pulling block. The fixed seat is fixedly disposed on the outer surface of the stationary mold plate and has a first sliding groove. The stationary mold plate has a second sliding groove communicating with the first sliding groove. The ends of the slider, the first core-pulling block, and the second core-pulling block extend into the injection cavity, and both ends are arc-shaped. The cylinder is fixedly disposed at the end of the fixed seat away from the stationary mold plate. The cylinder's output shaft is connected to the slider to drive the slider, the first core-pulling block, and the second core-pulling block to slide within the two grooves. The stationary mold core is provided with a first positioning block that limits the first core-pulling block and a second positioning block that limits the second core-pulling block. The first core-pulling block and the second core-pulling block are located on the upper and lower sides of the slider, respectively. The first core-pulling block is located inside the first positioning block, and the second core-pulling block is located inside the second positioning block. The side of the first core-pulling block facing the slider is provided with a first dovetail groove that is obliquely upward from the inside out, and the side of the second core-pulling block facing the slider is provided with a second dovetail groove that is obliquely downward from the inside out. The slider is provided with a first sliding block that cooperates with the first dovetail groove and a second sliding block that cooperates with the second dovetail groove, so that when the slider slides outward, the first core-pulling block and the second core-pulling block disengage from the corresponding positioning block and slide synchronously with the slider.

[0006] The above technical solution enables rapid demolding, and the molded product has a good appearance and is not rough. The molten plastic is injected into the injection cavity through the injection port to form the product. After molding, the moving mold plate opens, and the core-pulling structure starts to work. The slider slides towards the first slide groove under the drive of the cylinder. The first core-pulling block and the second core-pulling block will move towards each other. After disengaging from the corresponding positioning block, they slide outward synchronously with the slider to achieve core pulling. Then, the product is ejected by the ejection mechanism. The core-pulling structure is simple, easy to operate, can achieve rapid core pulling, and has a stable structure.

[0007] A further feature of the present invention is as follows: the first positioning block is fixedly mounted on the stationary mold core, and a limiting groove is provided on the side of the first positioning block facing the cylinder. The top wall of the limiting groove is provided with a downwardly extending stop. The first core-pulling block is provided with a first limiting part. When the mold is closed, the first limiting part abuts against the stop. When the slider slides outward, the first core-pulling block slides downward and the first limiting part disengages from the stop.

[0008] A further provision of the present invention: the second positioning block is L-shaped and fixedly mounted on the stationary mold core. The lower end face of the second core-pulling block is provided with a downwardly extending second limiting part. When the mold is closed, the lower end face of the second limiting part abuts against the horizontal part of the second positioning block, and the outer end face of the second limiting part abuts against the vertical part of the second positioning block. When the slider slides outward, the second core-pulling block slides upward, and the second limiting part disengages from the second positioning block.

[0009] By further configuring the above-mentioned components, two positioning blocks are used to position the corresponding core-pulling blocks, ensuring structural stability during injection molding and resulting in a good product finish. During core pulling, the slider first slides outward. Due to the inclined sliding block and dovetail groove, the first core-pulling block slides downward, and the first limiting part disengages from the stop block. The second core-pulling block slides upward, and the second limiting part disengages from the second positioning block. As the slider continues to slide, it drives the two core-pulling blocks to slide synchronously, completing the core pulling process. The structure is simple and the positioning is accurate.

[0010] The invention is further configured such that: the outer end of the first core-pulling block is connected to a first connecting rod that is inclined upward; the slider is provided with a first guide groove; the first connecting rod passes through the first guide groove; the first connecting rod part is located outside the first guide groove; and the outer end of the first connecting rod is provided with a first abutting boss; the first guide groove is provided with a second abutting boss; when the slider slides outward, the second abutting boss abuts against the first core-pulling block, which can drive the first core-pulling block to slide outward synchronously.

[0011] Further configuration: A second connecting rod inclined downward is connected to the second limiting part, and a second guide groove is correspondingly provided in the slider. The second connecting rod passes through the second guide groove. A third abutting boss is provided at the end of the second connecting rod, and a fourth abutting boss is provided in the second guide groove. When the slider slides outward, the fourth abutting boss abuts against the third abutting boss, which can drive the second core-pulling block to slide outward synchronously.

[0012] By adopting the above-mentioned further design, the structure is stable when the slider slides. After the two abutting bosses come into contact, the sliding of the slider can drive the core-pulling block to slide synchronously, so that the core-pulling structure can be disengaged, so that the subsequent product can be ejected.

[0013] A further feature of the present invention is as follows: the inner end of the slider is provided with a pointed portion, the upper and lower sides of the pointed portion are inclined, the first sliding block is fixedly installed on the upper end face of the pointed portion, the second sliding block is fixedly installed on the lower end face of the pointed portion, the outer end of the slider is provided with a T-shaped groove, the output shaft of the cylinder is provided with a T-shaped block, and the T-shaped block is engaged in the T-shaped groove.

[0014] The above-mentioned further design facilitates the insertion of the core-pulling structure into the injection cavity, making the overall mold structure compact. There is no need to reserve a large space for installing the core-pulling structure. The cooperation between the T-block and the T-slot facilitates the sliding of the slider. At the same time, it is easy to disassemble and assemble without the need for other tools. It can be directly inserted without affecting the synchronous sliding of the two.

[0015] A further embodiment of the present invention includes: the ejection mechanism comprising a movable ejector plate, a stationary ejector plate, and a plurality of ejector pins; the stationary ejector plate being located below the movable ejector plate; two movable ejector plates being provided; the ejector pins comprising oblique ejector pins and vertical ejector pins; the lower end of the vertical ejector pin being fixedly mounted on the upper movable ejector plate; the oblique ejector pins comprising two sets; the lower movable ejector plate being provided with a first connecting block and a second connecting block; the axis of the first connecting block being perpendicular to the axis of the second connecting block; one set of oblique ejector pins being mounted on the first connecting block via a first connecting rod; and the other set of oblique ejector pins being mounted on the second connecting block via a second connecting rod; the upper ends of both the oblique ejector pins and the vertical ejector pins extending into the injection molding cavity and contacting the inner top wall of the product.

[0016] With the above-mentioned further configuration, after mold opening and core pulling, the formed product is ejected by the ejection mechanism. The moving ejector plate moves upward, driving the ejector pins to move synchronously. With multiple ejector pins, the product can be ejected from multiple angles, resulting in high ejection efficiency. In addition, the upper end of the angled ejector pin is integrally formed with an ejection block, which increases the contact area between the angled ejector pin and the inner top wall of the product, resulting in better and more stable ejection effect.

[0017] A further provision of the present invention includes a positioning structure comprising a first positioning rod, a second positioning rod, a third positioning block, and a fixing block. The fixing block is fixedly mounted on the moving ejector plate, the first positioning rod is fixedly mounted on the stationary ejector plate, and the upper end of the first positioning rod passes through the fixing block. The second positioning rod is fixedly mounted on the lower template, and the upper end of the second positioning rod passes through the fixing block. The third positioning block is located within the fixing block and between the two positioning rods. Both the first and second positioning rods are provided with positioning bosses, and the height of the positioning boss on the second positioning rod is higher than the height of the positioning boss on the first positioning rod.

[0018] By adopting the above-mentioned further configuration, the movable ejector plate can be positioned. When the movable ejector plate is not ejected, the third positioning block rests on the positioning boss on the first positioning rod. When the movable ejector plate moves upward, it drives the fixed block and the third positioning block to move synchronously. When the third positioning block disengages from the first positioning rod and is ejected into place, the third positioning block rests on the positioning boss on the second positioning rod to position the movable ejector plate, making its structure stable. At the same time, it can guide the movable ejector plate when it slides, making the sliding smooth.

[0019] A further embodiment of the present invention includes a third core-pulling block and an inclined ejector, wherein the upper end of the inclined ejector is connected to the moving mold core and the lower end is inserted into the third core-pulling block, the stationary mold core is provided with a third sliding groove, and the third core-pulling block is slidably disposed in the third sliding groove.

[0020] With the above-mentioned further configuration, the inclined ejector moves upward as the moving template opens, thereby pushing the third core-pulling block outward, causing the third core-pulling block to slide outward in the third groove and disengage from the injection cavity. The structure is simple and can achieve rapid core pulling.

[0021] A further provision of the present invention includes: a water circulation structure provided in both the moving mold core and the stationary mold core; the water circulation structure includes an inlet pipe, an outlet pipe, and a connecting pipe; the inlet pipe and the outlet pipe are connected and arranged in a U-shape; the connecting pipe is located below the inlet pipe and the outlet pipe; the connecting pipe includes a first connecting part arranged in a U-shape and a second connecting part connected to both ends of the first connecting part; the second connecting part is vertically arranged and connected to the inlet pipe and the outlet pipe.

[0022] By adopting the above-mentioned further configuration, a water circulation structure can be set up to quickly cool the injection-molded product, improve the mold opening efficiency, and the connecting pipe has a wide laying area, surrounding the outer perimeter of the product, resulting in fast cooling efficiency. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of a product according to a specific embodiment of the present invention; Figure 2 This is a schematic diagram of a mold according to a specific embodiment of the present invention; Figure 3 This is a schematic diagram of the interior of the mold in a specific embodiment of the present invention; Figure 4 This is a schematic diagram of the core-pulling structure and the stationary mold core in a specific embodiment of the present invention; Figure 5 This is a schematic diagram of the core-pulling structure in a specific embodiment of the present invention; Figure 6 This is a schematic diagram of the slider and cylinder in a specific embodiment of the present invention; Figure 7 This is a schematic diagram of the first core-pulling block and the second core-pulling block according to a specific embodiment of the present invention; Figure 8 This is a schematic diagram of the first core-pulling block in a specific embodiment of the present invention; Figure 9 This is a schematic diagram of the second core-pulling block according to a specific embodiment of the present invention; Figure 10 This is a schematic diagram of the static mold core according to a specific embodiment of the present invention; Figure 11 This is a schematic diagram of the first core-pulling block and the first positioning block according to a specific embodiment of the present invention; Figure 12 This is a schematic diagram of the slider in a specific embodiment of the present invention; Figure 13 This is a cross-sectional view of the slider in a specific embodiment of the present invention; Figure 14 This is a schematic diagram of the ejector structure in a specific embodiment of the present invention; Figure 15 This is a schematic diagram of the positioning structure in a specific embodiment of the present invention; Figure 16 This is a schematic diagram of the water circulation structure in a specific embodiment of the present invention.

[0024] In the diagram, 1. Upper mold plate; 11. Injection port; 2. Moving mold plate; 21. Moving mold core; 3. Stationary mold plate; 31. Stationary mold core; 32. Second slide groove; 33. First positioning block; 331. Limiting groove; 332. Stop block; 34. Second positioning block; 35. Third slide groove; 4. Mold foot; 5. Lower mold plate; 6. Ejection mechanism; 61. Moving ejector plate; 62. Stationary ejector plate; 63. Angled ejector pin; 64. Vertical ejector pin; 65. First connecting block; 66. Second connecting block; 7. Core pulling structure; 71. Fixed base; 711. First slide groove; 72. Cylinder; 721. T-block; 73. Slider; 731. First sliding block; 732. Second sliding block; 733. First guide slide groove; 734. Second contact. 735. Boss; 736. Second guide groove; 737. Fourth abutting boss; 738. Tip; 739. T-slot; 74. First core-pulling block; 740. First dovetail groove; 741. First limiting part; 742. First connecting rod; 743. First abutting boss; 75. Second core-pulling block; 76. Second dovetail groove; 77. Second limiting part; 78. Second connecting rod; 79. Third abutting boss; 80. Positioning structure; 81. First positioning rod; 82. Second positioning rod; 83. Third positioning block; 84. Fixing block; 85. Positioning boss; 9. Third core-pulling block; 10. Angled top puller; 201. Water inlet pipe; 202. Water outlet pipe; 203. Connecting pipe; 100. Rearview mirror housing. Detailed Implementation

[0025] The technical solutions in this embodiment will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] It should be noted that in the description of this invention, all directional indications (such as up, down, forward, backward, etc.) are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0027] Furthermore, in this invention, the use of terms such as "first," "second," etc., is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. In the description of this invention, "a number" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0028] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0029] like Figure 1-16As shown, an injection mold for a rearview mirror housing includes an upper mold plate 1, a moving mold plate 2, a stationary mold plate 3, mold feet 4, a lower mold plate 5, and an ejection mechanism 6. The upper mold plate 1 has a glue inlet 11, the moving mold plate 2 has a moving mold core 21, and the stationary mold plate 3 has a stationary mold core 31. When the moving mold core 21 and the stationary mold core 31 are closed, they form an injection cavity. The glue inlet 11 communicates with the injection cavity. The stationary mold plate 3 has a core-pulling structure 7, which includes a fixed base 71, a cylinder 72, a slider 73, a first core-pulling block 74, and a second core-pulling block 75. The fixed base 71 is fixedly disposed on the outer surface of the stationary mold plate 3. The fixed base 71 is provided with a first sliding groove 711, and the stationary mold plate 3 is provided with a second sliding groove 32 communicating with the first sliding groove 711. The ends of the slider 73, the first core-pulling block 74, and the second core-pulling block 75 extend into the injection molding cavity, and the ends are all arc-shaped. The cylinder 72 is fixedly installed at the end of the fixed base 71 away from the stationary mold plate 3, and the output shaft of the cylinder 72 is connected to the slider 73 to drive the slider 73, the first core-pulling block 74, and the second core-pulling block 75 to slide in the two sliding grooves. The stationary mold core 31 is provided with a first positioning block 33 that limits the first core-pulling block 74 and a second positioning block 34 that limits the second core-pulling block 75. The first core-pulling block 74 and the second core-pulling block 75 are located on the upper and lower sides of the slider 73, respectively. The first core-pulling block 74 is located inside the first positioning block 33, and the second core-pulling block 75 is located inside the second positioning block 34. The first core-pulling block 74 has a first dovetail groove 741 that is obliquely upward from the inside to the outside on the side facing the slider 73, and the second core-pulling block 75 has a second dovetail groove 751 that is obliquely downward from the inside to the outside on the side facing the slider 73. The slider 73 is provided with a first sliding block 731 that cooperates with the first dovetail groove 741 and a second sliding block 732 that cooperates with the second dovetail groove 751, so that when the slider 73 slides outward, the first core-pulling block 74 and the second core-pulling block 75 are positioned accordingly. 5. The core puller detaches from the corresponding positioning block and slides synchronously with the slider 73, enabling rapid demolding. The molded product has a good appearance and is not rough. The molten plastic is injected into the injection cavity through the injection port 11 for product molding. After molding, the moving template 2 opens the mold, and the core pulling structure 7 starts to work. The slider 73 slides towards the first slide groove 711 under the drive of the cylinder 72. The first core pulling block 74 and the second core pulling block 75 will move towards each other. After detaching from the corresponding positioning block, they slide outward synchronously with the slider 73 to achieve core pulling. Then, the product is ejected by the ejection mechanism 6. The core pulling structure 7 is simple, easy to operate, can achieve rapid core pulling, and has a stable structure.

[0030] The first positioning block 33 is fixedly mounted on the stationary mold core 31. A limiting groove 331 is formed on the side of the first positioning block 33 facing the cylinder 72. The top wall of the limiting groove 331 is provided with a downwardly extending stop 332. The first core-pulling block 74 is provided with a first limiting part 742. When the mold is closed, the first limiting part 742 abuts against the stop 332. When the slider 73 slides outward, the first core-pulling block 74 slides downward, and the first limiting part 742 disengages from the stop 332. The second positioning block 34 is L-shaped and fixedly mounted on the stationary mold core 31. The lower end face of the second core-pulling block 75 is provided with a downwardly extending second limiting part 752. When the mold is closed, the lower end face of the second limiting part 752 abuts against the second limiting part 752. On the horizontal portion of the positioning block 34, the outer end face of the second limiting part 752 abuts against the vertical portion of the second positioning block 34. When the slider 73 slides outward, the second core-pulling block 75 slides upward, and the second limiting part 752 disengages from the second positioning block. The two positioning blocks respectively position the corresponding core-pulling blocks, making the structure stable during injection molding and the product molding effect good. During core pulling, the slider 73 slides outward first. Due to the inclined sliding block and dovetail groove, the first core-pulling block 74 slides downward, the first limiting part 742 disengages from the stop block 332, the second core-pulling block 75 slides upward, and the second limiting part 752 disengages from the second positioning block. When the slider 73 continues to slide, it drives the two core-pulling blocks to slide synchronously, completing the core pulling. The structure is simple and the positioning is accurate.

[0031] The outer end of the first core-pulling block 74 is connected to a first connecting rod 743 that is inclined upward. A first guide groove 733 is correspondingly provided inside the slider 73. The first connecting rod 743 passes through the first guide groove 733, with a portion of the first connecting rod 743 located outside the first guide groove 733. A first abutting boss 744 is provided on the outer end of the first connecting rod 743. A second abutting boss 734 is provided inside the first guide groove 733. When the slider 73 slides outward, the second abutting boss 734 abuts against the first core-pulling block 74, causing the first core-pulling block 74 to slide outward synchronously. A downward-inclined... The second connecting rod 753 is provided, and the slider 73 is provided with a corresponding second guide groove 735. The second connecting rod 753 passes through the second guide groove 735. The end of the second connecting rod 753 is provided with a third abutting boss 754, and the second guide groove 735 is provided with a fourth abutting boss 736. When the slider 73 slides outward, the fourth abutting boss 736 abuts against the third abutting boss 754, which can drive the second core-pulling block 75 to slide outward synchronously. This makes the structure stable when the slider 73 slides. After the two abutting bosses come into contact, the sliding of the slider 73 can drive the core-pulling block to slide synchronously, so that the core-pulling structure 7 can be disengaged so that the subsequent product can be ejected.

[0032] The inner end of the slider 73 is provided with a pointed part 737, and the upper and lower sides of the pointed part 737 are inclined. The first sliding block 731 is fixedly installed on the upper end face of the pointed part 737, and the second sliding block 732 is fixedly installed on the lower end face of the pointed part 737. The outer end of the slider 73 is provided with a T-shaped groove 738, and the output shaft of the cylinder 72 is provided with a T-shaped block 721. The T-shaped block 721 is engaged in the T-shaped groove 738, which facilitates the insertion of the core-pulling structure 7 into the injection cavity, making the overall mold structure compact and eliminating the need to reserve a large space for installing the core-pulling structure 7. The cooperation between the T-shaped block 721 and the T-shaped groove 738 facilitates the sliding of the slider 73, and is easy to disassemble and assemble without the need for other tools. It can be directly inserted without affecting the synchronous sliding of the two.

[0033] The ejection mechanism 6 includes a movable ejector plate 61, a stationary ejector plate 62, and a plurality of ejector pins. The stationary ejector plate 62 is located below the movable ejector plate 61. There are two movable ejector plates 61. The ejector pins include oblique ejector pins 63 and vertical ejector pins 64. The lower end of the vertical ejector pin 64 is fixedly mounted on the upper movable ejector plate 61. There are two sets of oblique ejector pins 63. The lower movable ejector plate 61 is provided with a first connecting block 65 and a second connecting block 66. The axis of the first connecting block 65 is perpendicular to the axis of the second connecting block 66. One set of oblique ejector pins 63 is connected by a first connecting rod. 743 is installed on the first connecting block 65, and another set of angled ejector pins 63 is installed on the second connecting block 66 through the second connecting rod 753. The upper ends of the angled ejector pins 63 and the vertical ejector pins 64 extend into the injection cavity and abut against the inner top wall of the product. After the mold is opened and the core is pulled out, the molded product is ejected by the ejection mechanism 6. The moving ejector plate 61 moves upward and drives the ejector pins to move synchronously. The product can be ejected from multiple angles by using multiple ejector pins, which has high ejection efficiency. In addition, the upper end of the angled ejector pin 63 is integrally formed with an ejection block, which increases the contact area between the angled ejector pin 63 and the inner top wall of the product, resulting in better and more stable ejection effect.

[0034] It also includes a positioning structure 8, which comprises a first positioning rod 81, a second positioning rod 82, a third positioning block 83, and a fixing block 84. The fixing block 84 is fixedly mounted on the moving ejector plate 61. The first positioning rod 81 is fixedly mounted on the stationary ejector plate 62, with its upper end passing through the fixing block 84. The second positioning rod 82 is fixedly mounted on the lower template 5, with its upper end passing through the fixing block 84. The third positioning block 83 is located within the fixing block 84 and between the two positioning rods. Both the first positioning rod 81 and the second positioning rod 82 are provided with positioning bosses 85. The height of the positioning boss 85 on the second positioning rod 82 is higher than the height of the positioning boss 85 on the first positioning rod 81, which can position the moving ejector plate 61. When the moving ejector plate 61 is not ejected, the third positioning block 83 is placed on the positioning boss 85 on the first positioning rod 81. When the moving ejector plate 61 moves upward, it drives the fixed block 84 and the third positioning block 83 to move synchronously. When the third positioning block 83 is disengaged from the first positioning rod 81 and ejected into place, the third positioning block 83 is placed on the positioning boss 85 on the second positioning rod 82, which positions the moving ejector plate 61 and makes its structure stable. At the same time, it can guide the moving ejector plate 61 when it slides, so that the sliding is smooth.

[0035] It also includes a third core-pulling block 9 and an inclined ejector 10. The upper end of the inclined ejector 10 is connected to the moving mold core 21, and the lower end is inserted into the third core-pulling block 9. The stationary mold core 31 is provided with a third sliding groove 35. The third core-pulling block 9 is slidably disposed in the third sliding groove 35. As the moving mold plate 2 opens, the inclined ejector 10 moves upward, thereby pushing the third core-pulling block 9 outward, so that the third core-pulling block 9 slides outward in the third sliding groove 35 and disengages from the injection cavity. The structure is simple and can realize rapid core pulling.

[0036] Both the moving mold core 21 and the stationary mold core 31 are equipped with water circulation structures. The water circulation structure includes an inlet pipe 201, an outlet pipe 202, and a connecting pipe 203. The inlet pipe 201 and the outlet pipe 202 are connected and arranged in a U-shape. The connecting pipe 203 is located below the inlet pipe 201 and the outlet pipe 202. The connecting pipe 203 includes a first connecting part arranged in a U-shape and a second connecting part connected to both ends of the first connecting part. The second connecting part is arranged vertically and is connected to the inlet pipe 201 and the outlet pipe 202. The water circulation structure can quickly cool the injection-molded product, improve the mold opening efficiency, and the connecting pipe 203 has a wide coverage area, surrounding the outer circumference of the product, resulting in fast cooling efficiency.

Claims

1. An injection mold for a rearview mirror housing, comprising an upper mold plate (1), a moving mold plate (2), a stationary mold plate (3), mold feet (4), a lower mold plate (5), and an ejection mechanism (6), wherein the upper mold plate (1) is provided with a glue injection port (11), the moving mold plate (2) is provided with a moving mold core (21), and the stationary mold plate (3) is provided with a stationary mold core (31), wherein the moving mold core (21) and the stationary mold core (31) form an injection cavity when the mold is closed, and the glue injection port (11) communicates with the injection cavity, characterized in that, The stationary template (3) is provided with a core-pulling structure (7), which includes a fixed seat (71), a cylinder (72), a slider (73), a first core-pulling block (74), and a second core-pulling block (75). The fixed seat (71) is fixedly disposed on the outer side of the stationary template (3). The fixed seat (71) is provided with a first sliding groove (711), and the stationary template (3) is provided with a second sliding groove (32) communicating with the first sliding groove (711). The ends of the slider (73), the first core-pulling block (74), and the second core-pulling block (75) extend into the injection molding cavity, and the ends are all arc-shaped. The cylinder (72) is fixedly disposed at the end of the fixed seat (71) away from the stationary template (3), and the output shaft of the cylinder (72) is connected to the slider (73) to drive the slider (73), the first core-pulling block (74), and the second core-pulling block (75) to slide in the two sliding grooves. The stationary mold core (31) is provided with a limiting first core-pulling block (74). The first positioning block (33) and the second positioning block (34) that limits the second core-pulling block (75) are respectively located on the upper and lower sides of the slider (73). The first core-pulling block (74) is located inside the first positioning block (33), and the second core-pulling block (75) is located inside the second positioning block (34). The first core-pulling block (74) has a first dovetail groove (741) that is obliquely upward from the inside to the outside on the side facing the slider (73), and the second core-pulling block has a second dovetail groove (751) that is obliquely downward from the inside to the outside on the side facing the slider (73). The slider (73) is provided with a first sliding block (731) that cooperates with the first dovetail groove (741) and a second sliding block (732) that cooperates with the second dovetail groove (751), so that when the slider (73) slides outward, the first core-pulling block (74) and the second core-pulling block (75) disengage from the corresponding positioning block and slide synchronously with the slider (73).

2. The injection mold for the rearview mirror housing according to claim 1, characterized in that, The first positioning block (33) is fixedly mounted on the stationary mold core (31). A limiting groove (331) is provided on the side of the first positioning block (33) facing the cylinder (72). A downwardly extending stop (332) is provided on the top wall of the limiting groove (331). A first limiting part (742) is provided on the first core-pulling block (74). When the mold is closed, the first limiting part (742) abuts against the stop (332). When the slider (73) slides outward, the first core-pulling block (74) slides downward and the first limiting part (742) disengages from the stop (332).

3. The injection mold for the rearview mirror housing according to claim 1 or 2, characterized in that, The second positioning block (34) is L-shaped and fixed on the stationary mold core (31). The lower end face of the second core-pulling block (75) is provided with a downwardly extending second limiting part (752). When the mold is closed, the lower end face of the second limiting part (752) abuts against the horizontal part of the second positioning block (34), and the outer end face of the second limiting part (752) abuts against the vertical part of the second positioning block (34). When the slider (73) slides outward, the second core-pulling block (75) slides upward, and the second limiting part (752) disengages from the second positioning block (34).

4. The injection mold for the rearview mirror housing according to claim 2, characterized in that, The outer end of the first core-pulling block (74) is connected to a first connecting rod (743) that is inclined upward. The slider (73) is provided with a first guide groove (733). The first connecting rod (743) passes through the first guide groove (733). The first connecting rod (743) is partially located outside the first guide groove (733). The outer end of the first connecting rod (743) is provided with a first abutting boss (744). The first guide groove (733) is provided with a second abutting boss (734). When the slider (73) slides outward, the second abutting boss (734) abuts against the first core-pulling block (74) and can drive the first core-pulling block (74) to slide outward synchronously.

5. The injection mold for the rearview mirror housing according to claim 3, characterized in that, The second limiting part (752) is connected to a second connecting rod (753) that is inclined downward. The slider (73) is provided with a second guide groove (735). The second connecting rod (753) passes through the second guide groove (735). The end of the second connecting rod (753) is provided with a third abutting boss (754). The second guide groove (735) is provided with a fourth abutting boss (736). When the slider (73) slides outward, the fourth abutting boss (736) abuts against the third abutting boss (754) and can drive the second core-pulling block (75) to slide outward synchronously.

6. The injection mold for the rearview mirror housing according to claim 1 or 2, characterized in that, The slider (73) has a pointed tip (737) at its inner end. The upper and lower sides of the pointed tip (737) are inclined. The first sliding block (731) is fixedly installed on the upper end face of the pointed tip (737), and the second sliding block (732) is fixedly installed on the lower end face of the pointed tip (737). The slider (73) has a T-shaped groove (738) at its outer end. The cylinder (72) has a T-shaped block (721) on its output shaft. The T-shaped block (721) is engaged in the T-shaped groove (738).

7. The injection mold for the rearview mirror housing according to claim 1 or 2, characterized in that, The ejector mechanism (6) includes a movable ejector plate (61), a stationary ejector plate (62), and a plurality of ejector pins. The stationary ejector plate (62) is located below the movable ejector plate (61). The movable ejector plate (61) has two ejector pins, including oblique ejector pins (63) and vertical ejector pins (64). The lower end of the vertical ejector pin (64) is fixedly mounted on the upper movable ejector plate (61). The oblique ejector pins (63) include two sets. The lower movable ejector plate (61) has a first connecting rod. The first connecting block (65) and the second connecting block (66) are perpendicular to each other. One set of inclined ejector pins (63) are installed on the first connecting block (65) through the first connecting rod (743), and the other set of inclined ejector pins (63) are installed on the second connecting block (66) through the second connecting rod (753). The upper ends of the inclined ejector pins (63) and the vertical ejector pins (64) extend into the injection molding cavity and abut against the inner top wall of the product.

8. The injection mold for the rearview mirror housing according to claim 7, characterized in that, It also includes a positioning structure (8), which includes a first positioning rod (81), a second positioning rod (82), a third positioning block (83), and a fixing block (84). The fixing block (84) is fixedly mounted on the moving ejector plate (61). The first positioning rod (81) is fixedly mounted on the stationary ejector plate (62). The upper end of the first positioning rod (81) passes through the fixing block (84). The second positioning rod (82) is fixedly mounted on the lower template (5). The upper end of the second positioning rod (82) passes through the fixing block (84). The third positioning block (83) is located inside the fixing block (84) and between the two positioning rods. The first positioning rod (81) and the second positioning rod (82) are both provided with positioning bosses (85). The height of the positioning boss (85) on the second positioning rod (82) is higher than the height of the positioning boss (85) on the first positioning rod (81).

9. The injection mold for the rearview mirror housing according to claim 1 or 2, characterized in that, It also includes a third core-pulling block (9) and an inclined ejector (10). The upper end of the inclined ejector (10) is connected to the moving mold core (21), and the lower end is inserted into the third core-pulling block (9). The stationary mold core (31) is provided with a third sliding groove (35), and the third core-pulling block (9) is slidably disposed in the third sliding groove (35).

10. The injection mold for the rearview mirror housing according to claim 1 or 2, characterized in that, Both the moving mold core (21) and the stationary mold core (31) are equipped with a water circulation structure. The water circulation structure includes an inlet pipe (201), an outlet pipe (202), and a connecting pipe (203). The inlet pipe (201) and the outlet pipe (202) are connected and arranged in a U-shape. The connecting pipe (203) is located below the inlet pipe (201) and the outlet pipe (202). The connecting pipe (203) includes a first connecting part arranged in a U-shape and a second connecting part connected to both ends of the first connecting part. The second connecting part is arranged vertically and is connected to the inlet pipe (201) and the outlet pipe (202).

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