An injection mold for a rearview mirror housing

Abstract

This invention relates to 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, and the stationary mold plate has a core-pulling structure. The core-pulling structure includes a fixed base, a cylinder, a slider, a first core-pulling block, and a second core-pulling block. The fixed base 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. The cylinder is fixedly disposed at the end of the fixed base away from the stationary mold plate, and the output shaft of the cylinder 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 sliding grooves. Using the above technical solution, this invention provides an injection mold for a rearview mirror housing with a simple core-pulling structure, convenient and quick operation, enabling rapid core pulling, and producing a high-quality, well-formed product.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of injection mold, in particular to an injection mold for rearview mirror shell. BACKGROUND

[0002] With the rapid development of the automotive industry, the safety and appearance design of vehicles have become an important focus of manufacturers and consumers. As one of the key components of vehicle safety, the rearview mirror not only has the function of adjusting the viewing angle, but also plays an important role in the appearance design of the vehicle. The rearview mirror shell, as the external protective structure of the rearview mirror, not only needs to have high strength and durability, but also needs to meet the delicate appearance design.

[0003] In the production of traditional rearview mirror shells, injection molding technology is usually used to form plastic materials through a mold. The existing rearview mirror shell mold is difficult to demold due to the large arc-shaped structure of the rearview mirror shell, and the core-pulling mechanism is complex and inconvenient to operate. SUMMARY

[0004] The purpose of the present application is to overcome the defects of the prior art, and provide an injection mold for rearview mirror shell, which has a simple core-pulling structure, is convenient and fast to operate, can realize fast core-pulling, and has good product effect and high quality after molding.

[0005] The technical scheme of the present application is: an injection mold for a rearview mirror shell, comprising an upper mold plate, a movable mold plate, a static mold plate, a mold foot, a lower mold plate, and an ejection mechanism, the upper mold plate is provided with a glue injection port, the movable mold plate is provided with a movable mold core, the static mold plate is provided with a static mold core, the movable mold core and the static mold core form an injection cavity when they are closed, the glue injection port is communicated with the injection cavity, the static mold plate is provided with a core pulling structure, the core pulling structure comprises a fixed seat, a 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 surface of the static mold plate, the fixed seat is provided with a first sliding groove, the static mold plate is provided with a second sliding groove communicated with the first sliding groove, the sliding block, the first core pulling block, and the second core pulling block extend into the injection cavity at the end, and the end is arranged in an arc shape, the cylinder is fixedly arranged at one end of the fixed seat away from the static mold plate, and the output shaft of the cylinder is connected with the sliding block to drive the sliding block, the first core pulling block, and the second core pulling block to slide in the two sliding grooves, the static mold core is provided with a first positioning block limiting the first core pulling block and a second positioning block limiting the second core pulling block, the first core pulling block and the second core pulling block are respectively located on the upper and lower sides of the sliding block, the first core pulling block is located in the first positioning block, the second core pulling block is located on the inner side of the second positioning block, the side of the first core pulling block facing the sliding block is provided with a first dovetail groove arranged obliquely upward from inside to outside, the side of the second core pulling block facing the sliding block is provided with a second dovetail groove arranged obliquely downward from inside to outside, the sliding block is provided with a first sliding block matched with the first dovetail groove and a second sliding block matched with the second dovetail groove, so that when the sliding block slides outwards, the first core pulling block and the second core pulling block are separated from the corresponding positioning blocks and slide synchronously with the sliding block.

[0006] The above technical scheme can realize rapid demolding, and the formed product is good in appearance and not rough, plastic solution is injected into the injection cavity through the glue injection port for product forming, the movable mold plate is opened after forming, and the core pulling structure starts to work, the sliding block slides in the direction of the first sliding groove under the drive of the cylinder, the first core pulling block and the second core pulling block move towards each other, are separated from the corresponding positioning blocks, and slide outwards synchronously with the sliding block to realize core pulling, and then the product is ejected by the ejection mechanism, the core pulling structure is simple in structure, convenient to operate, can realize rapid core pulling, and is stable in structure.

[0007] Further provided in the present application is that the first positioning block is fixedly arranged on the static mold core, a limiting groove is formed on the side of the first positioning block facing the cylinder, a blocking block extending downward is arranged on the top wall of the limiting groove, a first limiting part is arranged on the first core pulling block, when the mold is closed, the first limiting part abuts against the blocking block, when the sliding block slides outwards, the first core pulling block slides downwards, and the first limiting part is separated from the blocking block.

[0008] Still further setting of the present application: the second positioning block is arranged in L shape, and is fixedly arranged on the static mold core; the lower end surface of the second core pulling block is provided with a second limiting part extending downward; the lower end surface of the second limiting part abuts against the transverse part of the second positioning block, and the outer end surface of the second limiting part abuts against the vertical part of the second positioning block; when the slide block slides outward, the second core pulling block slides upward, and the second limiting part is separated from the second positioning block.

[0009] With the above further setting, the corresponding core pulling blocks are positioned by the two positioning blocks respectively, so that the structure is stable during injection molding, and the product has good effect after molding; when the core is pulled, the slide block slides outward first, and the first core pulling block slides downward due to the inclined slide block and the dovetail groove, so that the first limiting part is separated from the blocking block, and the second core pulling block slides upward, so that the second limiting part is separated from the second positioning block; when the slide block continues to slide, the two core pulling blocks are synchronously slid, and the core pulling is completed; the structure is simple, and the positioning is accurate.

[0010] Still further setting of the present application: the outer end of the first core pulling block is connected with a first connecting rod arranged obliquely upward; the slide block is correspondingly provided with a first guide sliding groove; the first connecting rod is arranged in the first guide sliding groove; the first connecting rod is partially arranged outside the first guide sliding groove; the end of the first connecting rod located at the outer end is provided with a first abutting boss; the first guide sliding groove is provided with a second abutting boss; when the slide block slides outward, the second abutting boss abuts against the second abutting boss, so that the first core pulling block is synchronously slid outward.

[0011] Further setting: the second limiting part is connected with a second connecting rod arranged obliquely downward; the slide block is correspondingly provided with a second guide sliding groove; the second connecting rod is arranged in the second guide sliding groove; the end of the second connecting rod is provided with a third abutting boss; the second guide sliding groove is provided with a fourth abutting boss; when the slide block slides outward, the fourth abutting boss abuts against the third abutting boss, so that the second core pulling block is synchronously slid outward.

[0012] With the above further setting, when the slide block slides, the structure is stable; after the two abutting bosses abut against each other, the sliding of the slide block can drive the core pulling blocks to synchronously slide, so that the core pulling structure is separated, and the product is subsequently ejected.

[0013] Still further setting of the present application: the inner end of the slide block is provided with a pointed end part; the upper and lower sides of the pointed end part are arranged obliquely; the first slide block is fixedly arranged on the upper end surface of the pointed end part; the second slide block is fixedly arranged on the lower end surface of the pointed end part; the outer end of the slide block is provided with a T-shaped groove; the output shaft of the air cylinder is provided with a T-shaped block; and the T-shaped block is clamped in the T-shaped groove.

[0014] With the further setting, the core-pulling structure is inserted into the injection cavity, the overall structure of the mold is compact, a large space is not needed to be reserved for installing the core-pulling structure, the cooperation of the T-shaped block and the T-shaped groove facilitates the sliding of the sliding block, and the T-shaped block and the T-shaped groove are convenient to disassemble and assemble without other tools.

[0015] The further setting of the application is that the ejection mechanism comprises a dynamic ejector plate, a static ejector plate and a plurality of ejectors, the static ejector plate is arranged below the dynamic ejector plate, the dynamic ejector plate is provided with two, the ejector comprises an inclined ejector and a vertical ejector, the lower end of the vertical ejector is fixedly arranged on the upper dynamic ejector plate, the inclined ejector comprises two groups, the lower dynamic ejector plate is provided with a first connecting block and a second connecting block, the axis of the first connecting block is perpendicular to the axis of the second connecting block, one group of the inclined ejectors is installed on the first connecting block through a first connecting rod, the other group of the inclined ejectors is installed on the second connecting block through a second connecting rod, and the upper ends of the inclined ejectors and the vertical ejector are inserted into the injection cavity and abut against the inner top wall of the product.

[0016] With the further setting, after the mold is opened and the core is pulled, the formed product is ejected through the ejection mechanism, the dynamic ejector plate moves upward to drive the synchronous movement of the ejector, the product can be ejected from multiple angles through the multiple ejectors, the ejection efficiency is high, the upper end of the inclined ejector is integrally formed with an ejection block, the contact area between the inclined ejector and the inner top wall of the product is increased, and the ejection effect is better and more stable.

[0017] The further setting of the application is that the positioning structure comprises a first positioning rod, a second positioning rod, a third positioning block and a fixed block, the fixed block is fixedly arranged on the dynamic ejector plate, the first positioning rod is fixedly arranged on the static ejector plate, the upper end of the first positioning rod is arranged on the fixed block, the second positioning rod is fixedly arranged on the lower die plate, the upper end of the second positioning rod is arranged on the fixed block, the third positioning block is arranged in the fixed block and located between the two positioning rods, and the first positioning rod and the second positioning rod are both provided with a positioning boss, and the height of the positioning boss on the second positioning rod is higher than that of the positioning boss on the first positioning rod.

[0018] With the further setting, the dynamic ejector plate can be positioned, when the dynamic ejector plate is not ejected, the third positioning block is arranged on the positioning boss on the first positioning rod, when the dynamic ejector plate moves upward, the fixed block and the third positioning block move synchronously, the third positioning block is separated from the first positioning rod, when the ejection is in place, the third positioning block is arranged on the positioning boss of the second positioning rod, the dynamic ejector plate is positioned, the structure is stable, the dynamic ejector plate can be guided when sliding, and the sliding is stable.

[0019] The further still further setting of the present application further comprises a third core-pulling block and an inclined ejector, the upper end of the inclined ejector is connected with the movable die core, and the lower end is inserted into the third core-pulling block, the movable die core is provided with a third sliding groove, and the third core-pulling block is slidably arranged in the third sliding groove.

[0020] With the further still further setting, the inclined ejector moves upward along with the opening of the movable die plate, thereby pushing the third core-pulling block outward, so that the third core-pulling block slides outward in the third sliding groove and is separated from the injection molding chamber, and the structure is simple and rapid core-pulling can be achieved.

[0021] The further still further setting of the present application is that the movable die core and the fixed die core are both provided with a water circulation structure, the water circulation structure comprises a water inlet pipe, a water outlet pipe and a connecting pipe, the water inlet pipe is connected with the water outlet pipe and is arranged in a U shape, the connecting pipe is arranged below the water inlet pipe and the water outlet pipe, the connecting pipe comprises 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 connected with the water inlet pipe and the water outlet pipe.

[0022] With the further still further setting, the water circulation structure is arranged to quickly cool the injection molded product, improve the opening efficiency, and the connecting pipe has a wide laying area and surrounds the outer periphery of the product, so that the cooling efficiency is high. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 The product schematic diagram of the embodiment of the present application is shown in the figure;

[0024] Figure 2 The mold schematic diagram of the embodiment of the present application is shown in the figure;

[0025] Figure 3 The internal schematic diagram of the mold of the embodiment of the present application is shown in the figure;

[0026] Figure 4 The schematic diagram of the core-pulling structure and the fixed die core of the embodiment of the present application is shown in the figure;

[0027] Figure 5 The schematic diagram of the core-pulling structure of the embodiment of the present application is shown in the figure;

[0028] Figure 6 The schematic diagram of the slider and the air cylinder of the embodiment of the present application is shown in the figure;

[0029] Figure 7 The schematic diagram of the first core-pulling block and the second core-pulling block of the embodiment of the present application is shown in the figure;

[0030] Figure 8 The schematic diagram of the first core-pulling block of the embodiment of the present application is shown in the figure;

[0031] Figure 9 The schematic diagram of the second core-pulling block of the embodiment of the present application is shown in the figure;

[0032] Figure 10 A schematic view of the static die core of the embodiment of the present application;

[0033] Figure 11 A schematic view of the first core-pulling block and the first positioning block of the embodiment of the present application;

[0034] Figure 12 A schematic view of the slider of the embodiment of the present application;

[0035] Figure 13 A sectional view of the slider of the embodiment of the present application;

[0036] Figure 14 A schematic view of the ejection structure of the embodiment of the present application;

[0037] Figure 15 A schematic view of the positioning structure of the embodiment of the present application;

[0038] Figure 16 A schematic view of the water circulation structure of the embodiment of the present application.

[0039] In the figure, 1, the upper die plate; 11, the glue injection port; 2, the movable die plate; 21, the movable die core; 3, the static die plate; 31, the static die core; 32, the second sliding groove; 33, the first positioning block; 331, the limiting groove; 332, the stop block; 34, the second positioning block; 35, the third sliding groove; 4, the die foot; 5, the lower die plate; 6, the ejection mechanism; 61, the movable ejector plate; 62, the static ejector plate; 63, the inclined ejector pin; 64, the vertical ejector pin; 65, the first connecting block; 66, the second connecting block; 7, the core-pulling structure; 71, the fixed seat; 711, the first sliding groove; 72, the air cylinder; 721, the T-shaped block; 73, the slider; 731, the first sliding block; 732, the second sliding block; 733, the first guide sliding groove; 734, the second abutting boss; 735, the second guide sliding groove; 736, the fourth abutting boss; 737, the pointed end; 738, the T-shaped groove; 74, the first core-pulling block; 741, the first dovetail groove; 742, the first limiting portion; 743, the first connecting rod; 744, the first abutting boss; 75, the second core-pulling block; 751, the second dovetail groove; 752, the second limiting portion; 753, the second connecting rod; 754, the third abutting boss; 8, the positioning structure; 81, the first positioning rod; 82, the second positioning rod; 83, the third positioning block; 84, the fixed block; 85, the positioning boss; 9, the third core-pulling block; 10, the inclined ejector; 201, the water inlet pipe; 202, the water outlet pipe; 203, the connecting pipe; 100, the rearview mirror housing. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments will be described clearly and completely below with reference to the drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative effort belong to the protection scope of the present application.

[0041] It should be noted that, in the description of the present application, all the directional indications (such as up, down, front, back, etc.) are only used to explain the relative position relationship, movement condition, etc. between the components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directional indications also change accordingly.

[0042] In addition, the description such as "first", "second" and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. In the description of the present application, the meaning of "several" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0043] In addition, the technical solutions of various embodiments of the present application can be combined with each other, but it must be based on the realization of those skilled in the art, when the combination of technical solutions appears contradictory or cannot be realized, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope of the present application.

[0044] As Figures 1-16The injection mold of the rearview mirror shell is shown, which comprises an upper mold plate 1, a movable mold plate 2, a static mold plate 3, a mold foot 4, a lower mold plate 5 and an ejection mechanism 6, the upper mold plate 1 is provided with a glue injection port 11, the movable mold plate 2 is provided with a movable mold core 21, the static mold plate 3 is provided with a static mold core 31, the movable mold core 21 and the static mold core 31 form an injection cavity when they are combined, the glue injection port 11 communicates with the injection cavity, the static mold plate 3 is provided with a core-pulling structure 7, the core-pulling structure 7 comprises a fixed seat 71, a gas cylinder 72, a sliding block 73, a first core-pulling block 74 and a second core-pulling block 75, the fixed seat 71 is fixedly arranged on the outer side of the static mold plate 3, the fixed seat 71 is provided with a first sliding groove 711, the static mold plate 3 is provided with a second sliding groove 32 which communicates with the first sliding groove 711, the sliding block 73, the first core-pulling block 74 and the second core-pulling block 75 extend into the injection cavity at the end, and the end is arranged in an arc shape, the gas cylinder 72 is fixedly arranged at the end of the fixed seat 71 away from the static mold plate 3, and the output shaft of the gas cylinder 72 is connected with the sliding block 73 to drive the sliding block 73, the first core-pulling block 74 and the second core-pulling block 75 to slide in the two sliding grooves, the static mold core 31 is provided with a first positioning block 33 limiting the first core-pulling block 74 and a second positioning block 34 limiting the second core-pulling block 75, the first core-pulling block 74 and the second core-pulling block 75 are respectively located on the upper and lower sides of the sliding block 73, the first core-pulling block 74 is located in the first positioning block 33, and the second core-pulling block 75 is located inside the second positioning block 34, the side of the first core-pulling block 74 facing the sliding block 73 is provided with a first dovetail groove 741 arranged obliquely upward from inside to outside, and the side of the second core-pulling block facing the sliding block 73 is provided with a second dovetail groove 751 arranged obliquely downward from inside to outside, the sliding block 73 is provided with a first sliding block 731 matched with the first dovetail groove 741 and a second sliding block 732 matched with the second dovetail groove 751, so that when the sliding block 73 slides outward, the first core-pulling block 74 and the second core-pulling block 75 are separated from the corresponding positioning blocks and slide synchronously with the sliding block 73, the rapid demolding can be realized, the molded product has good appearance and is not rough, the plastic solution is injected into the injection cavity through the glue injection port 11 to form the product, the movable mold plate 2 is opened after molding, the core-pulling structure 7 starts to work, the sliding block 73 slides to the first sliding groove 711 under the drive of the gas cylinder 72, the first core-pulling block 74 and the second core-pulling block 75 move towards each other, slide outward synchronously with the sliding block 73 after being separated from the corresponding positioning blocks, the core-pulling is realized, the product is ejected through the ejection mechanism 6, the core-pulling structure 7 is simple, easy to operate, can realize rapid core-pulling, and is stable in structure.

[0045] The first positioning block 33 is fixedly arranged on the static die core 31, a limiting groove 331 is arranged on the side of the first positioning block 33 facing the air cylinder 72, the top wall of the limiting groove 331 is provided with a downward extending stop block 332, the first core pulling block 74 is provided with a first limiting portion 742, when the mold is closed, the first limiting portion 742 abuts against the stop block 332, when the sliding block 73 slides outward, the first core pulling block 74 slides downward, and the first limiting portion 742 is separated from the stop block 332; the second positioning block 34 is arranged in an L shape, and the second positioning block 34 is fixedly arranged on the static die core 31, the lower end surface of the second core pulling block 75 is provided with a downward extending second limiting portion 752, when the mold is closed, the lower end surface of the second limiting portion 752 abuts against the transverse portion of the second positioning block 34, and the outer end surface of the second limiting portion 752 abuts against the vertical portion of the second positioning block 34, when the sliding block 73 slides outward, the second core pulling block 75 slides upward, and the second limiting portion 752 is separated from the second positioning block, the two positioning blocks are used for positioning the corresponding core pulling blocks respectively, so that the structure is stable during injection molding, and the product has good molding effect after molding, when the core is pulled, the sliding block 73 slides outward first, due to the inclined sliding block and the dovetail groove, the first core pulling block 74 slides downward, the first limiting portion 742 is separated from the stop block 332, the second core pulling block 75 slides upward, the second limiting portion 752 is separated from the second positioning block, and when the sliding block 73 continues to slide, the two core pulling blocks slide synchronously, the core pulling is completed, the structure is simple, and the positioning is accurate.

[0046] The outer end of the first core pulling block 74 is connected with an inclined upward arranged first connecting rod 743, the sliding block 73 is correspondingly provided with a first guide sliding groove 733, the first connecting rod 743 is arranged in the first guide sliding groove 733, part of the first connecting rod 743 is located outside the first guide sliding groove 733, and the end of the first connecting rod 743 located at the outer end is provided with a first abutting boss 744, the first guide sliding groove 733 is provided with a second abutting boss 734, when the sliding block 73 slides outward, the second abutting boss 734 abuts against the second abutting boss 734, so that the first core pulling block 74 slides outward synchronously; the second limiting portion 752 is connected with an inclined downward arranged second connecting rod 753, the sliding block 73 is correspondingly provided with a second guide sliding groove 735, the second connecting rod 753 is arranged in the second guide sliding groove 735, the end of the second connecting rod 753 is provided with a third abutting boss 754, and the second guide sliding groove 735 is provided with a fourth abutting boss 736, when the sliding block 73 slides outward, the fourth abutting boss 736 abuts against the third abutting boss 754, so that the second core pulling block 75 slides outward synchronously, when the sliding block 73 slides, the structure is stable, after the two abutting bosses are in contact, the sliding of the sliding block 73 drives the core pulling block to slide synchronously, so that the core pulling structure 7 is separated, and the subsequent product is easily ejected.

[0047] The slider 73 is provided with a pointed end portion 737, the upper and lower sides of the pointed end portion 737 are inclined, the first sliding block 731 is fixedly installed on the upper end surface of the pointed end portion 737, the second sliding block 732 is fixedly installed on the lower end surface of the pointed end portion 737, the outer end of the slider 73 is provided with a T-shaped slot 738, the output shaft of the cylinder 72 is provided with a T-shaped block 721, the T-shaped block 721 is clamped in the T-shaped slot 738, the core pulling structure 7 is inserted into the injection cavity, the overall structure of the mold is compact, and a large space is not needed to reserve for installing the core pulling structure 7, the cooperation of the T-shaped block 721 and the T-shaped slot 738 facilitates the sliding of the slider 73, and the slider 73 is convenient to disassemble and assemble without the need of other tools, and can be directly inserted, and the synchronous sliding of the two is not affected.

[0048] The ejection mechanism 6 includes a dynamic ejector plate 61, a static ejector plate 62 and a plurality of ejector pins, the static ejector plate 62 is arranged below the dynamic ejector plate 61, the dynamic ejector plate 61 is provided with two, the ejector pins include inclined ejector pins 63 and vertical ejector pins 64, the lower end of the vertical ejector pin 64 is fixedly arranged on the upper dynamic ejector plate 61, the inclined ejector pin 63 includes two groups, the lower dynamic 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 group of inclined ejector pins 63 is installed on the first connecting block 65 through a first connecting rod 743, and the other group of inclined ejector pins 63 is installed on the second connecting block 66 through a second connecting rod 753, the upper end of the inclined ejector pin 63 and the vertical ejector pin 64 extends into the injection cavity and abuts against the inner top wall of the product, after the mold is opened and the core is pulled out, the molded product is ejected through the ejection mechanism 6, the dynamic ejector plate 61 moves upward to drive the synchronous movement of the ejector pins, the product can be ejected from multiple angles through the plurality of ejector pins, the ejection efficiency is high, and the upper end of the inclined ejector pin 63 is integrally formed with an ejector block, the contact area between the inclined ejector pin 63 and the inner top wall of the product is increased, and the ejection effect is better and more stable.

[0049] The positioning structure 8 comprises a first positioning rod 81, a second positioning rod 82, a third positioning block 83 and a fixed block 84, the fixed block 84 is fixedly arranged on the movable ejector plate 61, the first positioning rod 81 is fixedly arranged on the static ejector plate 62, the upper end of the first positioning rod 81 is arranged on the fixed block 84, the second positioning rod 82 is fixedly arranged on the lower mold plate 5, the upper end of the second positioning rod 82 is arranged on the fixed block 84, the third positioning block 83 is arranged in the fixed block 84 and is located between the two positioning rods, the first positioning rod 81 and the second positioning rod 82 are both provided with a positioning boss 85, the height of the positioning boss 85 on the second positioning rod 82 is higher than that of the positioning boss 85 on the first positioning rod 81, the movable ejector plate 61 can be positioned, when the movable ejector plate 61 is not ejected, the third positioning block 83 is arranged on the positioning boss 85 on the first positioning rod 81, when the movable ejector plate 61 moves upward, the fixed block 84 and the third positioning block 83 move synchronously, the third positioning block 83 is separated from the first positioning rod 81, when the movable ejector plate 61 is ejected, the third positioning block 83 is arranged on the positioning boss 85 of the second positioning rod 82, the movable ejector plate 61 is positioned and the structure is stable, and the movable ejector plate 61 can be guided when sliding, and the sliding is stable.

[0050] The third core pulling block 9 and the inclined core pulling 10 are further included, the upper end of the inclined core pulling 10 is connected with the movable mold core 21, the lower end is inserted into the third core pulling block 9, the third sliding groove 35 is arranged on the static mold core 31, the third core pulling block 9 is slidably arranged in the third sliding groove 35, the inclined core pulling 10 moves upward along with the movable mold plate 2, 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 is separated from the injection molding chamber, the structure is simple and the rapid core pulling can be realized.

[0051] The water circulation structure is arranged in the movable mold core 21 and the static mold core 31, the water circulation structure comprises a water inlet pipe 201, a water outlet pipe 202 and a connecting pipe 203, the water inlet pipe 201 is connected with the water outlet pipe 202 and is arranged in a U shape, the connecting pipe 203 is arranged below the water inlet pipe 201 and the water outlet pipe 202, the connecting pipe 203 comprises a first connecting part arranged in a U shape and a second connecting part connected with both ends of the first connecting part, the second connecting part is vertically arranged and is connected with the water inlet pipe 201 and the water outlet pipe 202, the water circulation structure is arranged, the injection molding product can be rapidly cooled after molding, the mold opening efficiency is improved, and the connecting pipe 203 has a wide laying area and surrounds the outer peripheral surface of the product, so that the cooling efficiency is high.

Claims

1. An injection mold for a rearview mirror housing, comprising an upper mold plate (1), a movable mold plate (2), a stationary mold plate (3), a mold foot (4), a lower mold plate (5), and an ejection mechanism (6), wherein the upper mold plate (1) is provided with an injection port (11), the movable mold plate (2) is provided with a movable mold core (21), and the stationary mold plate (3) is provided with a stationary mold core (31), the movable mold core (21) and the stationary mold core (31) form an injection chamber when they are closed, and the injection port (11) is in communication with the injection chamber, characterized in that, The static mold plate (3) is provided with a core-pulling structure (7), the core-pulling structure (7) comprises a fixed seat (71), a cylinder (72), a sliding block (73), a first core-pulling block (74) and a second core-pulling block (75), the fixed seat (71) is fixedly arranged on the outer side of the static mold plate (3), the fixed seat (71) is provided with a first sliding groove (711), the static mold plate (3) is provided with a second sliding groove (32) communicated with the first sliding groove (711), the sliding block (73), the first core-pulling block (74) and the second core-pulling block (75) extend to the injection cavity, and the end is arranged in arc shape, the cylinder (72) is fixedly arranged at one end of the fixed seat (71) away from the static mold plate (3), and the output shaft of the cylinder (72) is connected with the sliding block (73), so that the sliding block (73), the first core-pulling block (74) and the second core-pulling block (75) are driven to slide in the two sliding grooves, the static mold core (31) is provided with a first positioning block (33) limiting the first core-pulling block (74) and a second positioning block (34) limiting the second core-pulling block (75), the first core-pulling block (74) and the second core-pulling block (75) are respectively located on the upper and lower sides of the sliding block (73), the first core-pulling block (74) is located in the first positioning block (33), the second core-pulling block (75) is located in the inner side of the second positioning block (34), the side of the first core-pulling block (74) towards the sliding block (73) is provided with a first dovetail groove (741) arranged obliquely upwards from inside to outside, the side of the second core-pulling block towards the sliding block (73) is provided with a second dovetail groove (751) arranged obliquely downwards from inside to outside, the sliding block (73) is provided with a first sliding block (731) matched with the first dovetail groove (741) and a second sliding block (732) matched with the second dovetail groove (751), so that when the sliding block (73) slides outwards, the first core-pulling block (74) and the second core-pulling block (75) are separated from the corresponding positioning blocks and slide synchronously with the sliding block (73).

2. The injection mold for a rearview mirror housing of claim 1, wherein, The first positioning block (33) is fixedly arranged on the static mold core (31), a limiting groove (331) is formed on the side of the first positioning block (33) towards the cylinder (72), the top wall of the limiting groove (331) is provided with a stop block (332) extending downwards, the first core-pulling block (74) is provided with a first limiting portion (742), when the mold is closed, the first limiting portion (742) abuts against the stop block (332), when the sliding block (73) slides outwards, the first core-pulling block (74) slides downwards, and the first limiting portion (742) is separated from the stop block (332).

3. Injection mold for mirror housings according to claim 1 or 2, characterized in that The second positioning block (34) is arranged in L shape, the second positioning block (34) is fixedly arranged on the static mold core (31), the lower end face of the second core-pulling block (75) is provided with a second limiting portion (752) extending downwards, when the mold is closed, the lower end face of the second limiting portion (752) abuts against the transverse portion of the second positioning block (34), and the outer end face of the second limiting portion (752) abuts against the vertical portion of the second positioning block (34), when the sliding block (73) slides outwards, the second core-pulling block (75) slides upwards, and the second limiting portion (752) is separated from the second positioning block (34).

4. The injection mold for a rearview mirror housing of claim 2, wherein, The outer end of the first core-pulling block (74) is connected with a first connecting rod (743) arranged obliquely upward, a first guide sliding groove (733) is arranged correspondingly in the slider (73), the first connecting rod (743) is arranged in the first guide sliding groove (733), the first connecting rod (743) is partially arranged outside the first guide sliding groove (733), and the end of the first connecting rod (743) located at the outer end is provided with a first abutting boss (744), the first guide sliding groove (733) is provided with a second abutting boss (734), and when the slider (73) slides to the outside, the second abutting boss (734) can drive the first core-pulling block (74) to slide outward synchronously after abutting against the second abutting boss (734).

5. The injection mold for a rearview mirror housing of claim 3, wherein, The second limiting portion (752) is connected with a second connecting rod (753) arranged obliquely downward, a second guide sliding groove (735) is arranged correspondingly in the slider (73), the second connecting rod (753) is arranged in the second guide sliding groove (735), the end of the second connecting rod (753) is provided with a third abutting boss (754), the second guide sliding groove (735) is provided with a fourth abutting boss (736), and when the slider (73) slides to the outside, the fourth abutting boss (736) can drive the second core-pulling block (75) to slide outward synchronously after abutting against the third abutting boss (754).

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

7. The injection mold for a rearview mirror housing according to claim 1 or 2, characterized in that The ejection mechanism (6) comprises a moving ejector plate (61), a static ejector plate (62) and a plurality of ejector pins, the static ejector plate (62) is arranged below the moving ejector plate (61), the moving ejector plate (61) is provided with two, the ejector pin comprises an inclined ejector pin (63) and a vertical ejector pin (64), the lower end of the vertical ejector pin (64) is fixedly arranged on the upper moving ejector plate (61), the inclined ejector pin (63) comprises two groups, the first connecting block (65) and the second connecting block (66) are arranged on the lower moving ejector plate (61), the axis of the first connecting block (65) is perpendicular to the axis of the second connecting block (66), one group of the inclined ejector pin (63) is installed on the first connecting block (65) through the first connecting rod (743), the other group of the inclined ejector pin (63) is installed on the second connecting block (66) through the second connecting rod (753), and the upper ends of the inclined ejector pin (63) and the vertical ejector pin (64) extend into the injection cavity and abut against the inner top wall of the product.

8. The injection mold for a rearview mirror housing of claim 7, wherein, Further comprising a positioning structure (8), the positioning structure (8) comprises a first positioning rod (81), a second positioning rod (82), a third positioning block (83) and a fixed block (84), the fixed block (84) is fixedly arranged on the moving ejector plate (61), the first positioning rod (81) is fixedly arranged on the static ejector plate (62), the upper end of the first positioning rod (81) is arranged on the fixed block (84), the second positioning rod (82) is fixedly arranged on the lower mold plate (5), the upper end of the second positioning rod (82) is arranged on the fixed block (84), the third positioning block (83) is arranged in the fixed block (84) and located between the two positioning rods, the first positioning rod (81) and the second positioning rod (82) are both provided with a positioning boss (85), the height of the positioning boss (85) on the second positioning rod (82) is higher than that of the positioning boss (85) on the first positioning rod (81).

9. The injection mold for a rearview mirror housing of claim 1 or 2, wherein, Further comprising a third core pulling block (9) and an inclined ejector (10), the upper end of the inclined ejector (10) is connected with the moving mold core (21), the lower end is inserted into the third core pulling block (9), the static mold core (31) is provided with a third sliding groove (35), and the third core pulling block (9) is slidingly arranged in the third sliding groove (35).

10. The injection mold for a rearview mirror housing of claim 1 or 2, wherein, The moving mold core (21) and the static mold core (31) are both provided with a water circulation structure, the water circulation structure comprises a water inlet pipe (201), a water outlet pipe (202) and a connecting pipe (203), the water inlet pipe (201) is connected with the water outlet pipe (202) and arranged in a U shape, the connecting pipe (203) is arranged below the water inlet pipe (201) and the water outlet pipe (202), the connecting pipe (203) comprises 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 connected with the water inlet pipe (201) and the water outlet pipe (202).

Images