Double-color injection mold with front mold inclined elastic block demolding mechanism

Abstract

The invention relates to the technical field of double-color injection molds, in particular to a double-color injection mold with a front mold inclined elastic block demolding mechanism. The double-color injection mold comprises a rear mold, a plurality of butt joint holes are symmetrically formed in the upper end of the rear mold, a front mold is installed at the upper end of the rear mold, and an upper mold cavity is formed in the lower end of the front mold in a left-right upward sunken mode; the top of each upper mold cavity is provided with a connecting groove in an upward penetrating mode, and first front mold injection inclined ejection sliding blocks are installed in one upper mold cavity in a left-right symmetry mode. The front mold drives the first front mold injection inclined top sliding block, the second front mold injection inclined top sliding block, the guide assembly and the ejection demolding mechanism to synchronously move downwards, at the moment, the lower end of an L-shaped block is inserted into an L-shaped groove downwards along a penetrating groove and the upper end of the L-shaped groove, and the first front mold injection inclined top sliding block and the second front mold injection inclined top sliding block drive the locking mechanism and the unlocking mechanism to move downwards when moving downwards.

Description

Technical Field

[0001] The invention relates to the technical field of double-color injection molds, in particular to a double-color injection mold with a front mold oblique elastic block demoulding mechanism. Background Art

[0002] Two-color injection molding refers to the molding process of injecting two different materials into the same set of molds, so that the molded parts are formed by two materials. Some of the two materials are different colors, and some are different in hardness and softness, so as to improve the aesthetics and assembly performance of the product. The existing two-color molds are mostly composed of two sets of molds, the front mold and the back mold, and the back mold part of the two-color mold needs to be the same. In the process of closing the front mold, when some front molds are used for one-shot injection molding of the product, the one-shot oblique elastic block needs to move parallel, and when the product is used for two-shot injection molding, the two-shot oblique elastic block needs to slide downward obliquely, so we need to make sliding wear-resistant blocks in two directions in the back mold. The existing back mold cannot meet the above two processing methods at the same time. The existing processing method is to constantly replace the back mold, and at the same time, the product needs to be taken out and placed in the new back mold, which not only increases the difficulty of work, but also in the process of putting the product into the new back mold, the product often cannot be accurately placed in the new back mold cavity, resulting in defects in the injection molded product, and serious damage to the product will be directly caused, which is not conducive to actual use. Summary of the invention

[0003] The object of the present invention is to provide a two-color injection mold with a front mold oblique spring block demoulding mechanism to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical scheme: a two-color injection mold with a front mold oblique spring block demolding mechanism, comprising a rear mold, wherein the upper end of the rear mold is symmetrically provided with a plurality of docking holes, the upper end of the rear mold is installed with the front mold, the lower end of the front mold is recessed upwards to form an upper mold cavity, the tops of the two upper mold cavities are both penetrated upwards to form a connecting groove, a front mold one-shot oblique top slider is symmetrically installed in one upper mold cavity, a front mold two-shot oblique top slider is symmetrically installed in the other upper mold cavity, the lower end of the front mold two-shot oblique top slider is symmetrically protruding downwards and provided with a guide oblique block, the front mold one-shot oblique top slider and the front mold two-shot oblique top slider are both symmetrically installed with an ejection demolding mechanism, guide assemblies are symmetrically installed in the two upper mold cavities, the front mold one-shot oblique top slider and the front mold two-shot oblique top slider are respectively slidably connected with adjacent guide assemblies, the front mold one-shot oblique top slider and the front mold two-shot oblique top slider are both provided with mounting grooves at the front and rear ends, and mounting blocks are detachably installed in the mounting grooves; The upper end of the rear mold is symmetrically provided with a lower mold cavity, and both sides of the two lower mold cavities are symmetrically provided with two-shot sliding inclined grooves front and back. The side of the lower mold cavity is provided with a single-shot parallel groove on the side relatively far away from the two two-shot sliding inclined grooves. A two-shot sliding wear-resistant block is fixedly installed in the two-shot sliding inclined groove, and a single-shot parallel wear-resistant block is fixedly installed in the single-shot parallel groove. Reset mechanisms are installed at both ends of the two lower mold cavities in the rear mold.

[0005] As a further scheme of the present invention, the guide assembly includes a connecting vertical plate fixedly installed in the upper mold cavity, and the sides of the two symmetrical connecting vertical plates close to each other are set to a slope surface, and a guide inclined plate is fixedly connected to the slope surface of the connecting vertical plate. The left and right sides of the front mold one-shot inclined top slider and the front mold two-shot inclined top slider are symmetrically provided with T-shaped inclined grooves front and back, and the connecting vertical plate and the guide inclined plate are slidably connected to the adjacent T-shaped inclined grooves, and the front and rear ends of the front mold one-shot inclined top slider and the front mold two-shot inclined top slider are installed with locking mechanism and unlocking mechanism.

[0006] As a further solution of the present invention, the locking mechanism includes a shrinkage groove provided on the inner side wall of the installation groove, and movable grooves are symmetrically provided on the left and right side walls of the shrinkage groove. An extrusion block is slidably installed in the shrinkage groove, and an extrusion inclined groove is provided at the lower end of the extrusion block. A locking rod is fixedly connected to the side of the extrusion block away from the installation groove, and movable blocks are symmetrically fixedly connected on the left and right sides of the extrusion block. A first spring sheet is fixedly installed on one side of the movable block, and a vertical groove is provided downwardly through the lower end of the shrinkage groove, and the unlocking mechanism is installed in the vertical groove.

[0007] As a further solution of the present invention, one end of the locking rod extends through the contraction groove into the T-shaped bevel groove, and the end of the locking rod contacts the side of the guide bevel plate. The side of the guide bevel plate is provided with a positioning hole matching the locking rod.

[0008] As a further solution of the present invention, the movable block is connected to the movable groove in a front-rear sliding manner, and one side of the first elastic sheet abuts against the inner wall of the movable groove.

[0009] As a further solution of the present invention, the unlocking mechanism includes an extrusion plate installed in a vertical groove for upward and downward sliding, and lifting blocks are symmetrically fixedly connected to the left and right sides of the extrusion plate, and a second spring piece is fixedly installed on the upper end of the lifting block. The upper end of the extrusion plate is sloped on one side close to the installation groove, the upper end of the extrusion plate is slidably connected to the extrusion inclined groove, and the lower end of the extrusion plate abuts against the upper end of a parallel wear-resistant block.

[0010] As a further solution of the present invention, lifting grooves are symmetrically provided on the left and right inner walls of the vertical groove, the lifting block is slidably connected to the lifting grooves up and down, and the upper end of the second spring sheet abuts against the upper end of the lifting grooves.

[0011] As a further solution of the present invention, the upper ends of the front mold one-shot inclined top slider and the front mold two-shot inclined top slider are both symmetrically inclined front and back to form inclined holes, and the ejection demolding mechanism includes an inclined rod slidably inserted in the inclined hole, the upper end of the inclined rod is sleeved with a top mold spring, the upper end of the top mold spring abuts against the upper ejector block, the end of the inclined rod extends through the upper mold cavity to the connecting groove and is fixedly connected to the upper ejector block, and the upper ejector block is fixedly installed in the connecting groove.

[0012] As a further solution of the present invention, the upper end of the rear mold is provided with L-shaped grooves symmetrically at both ends of the two lower mold cavities, a connecting groove is provided between the bottoms of two adjacent L-shaped grooves, a through groove is provided on the side surface of the upper end of each L-shaped groove, and a limiting groove is symmetrically provided on the upper and lower sides of each connecting groove; The reset mechanism includes a fixed stopper fixedly connected to the middle position of the connecting groove, reset blocks are arranged on the left and right sides of the fixed stopper, a reset spring is fixedly inserted between the reset block and the fixed stopper, and the upper and lower sides of the reset block are symmetrically fixedly connected with limit blocks, the outer side surface of the mounting block is fixedly connected with an L-shaped block, and the lower end of the L-shaped block passes downward through the through groove and is inserted into the L-shaped groove.

[0013] As a further solution of the present invention, the reset block is connected to the connecting groove for left and right sliding, the limit block is connected to the limit groove for left and right sliding, the L-shaped block is connected to the L-shaped groove for left and right sliding, and the side of the L-shaped block abuts against the reset block.

[0014] The beneficial effects of the present invention are: 1. When processing the product, the front mold is moved downward to close the mold with the rear mold, and the front mold drives the front mold one-shot inclined top slider, the front mold two-shot inclined top slider, the guide assembly, and the ejection demoulding mechanism to move downward synchronously. At this time, the lower end of the L-shaped block is inserted into the L-shaped groove along the through groove and the upper end of the L-shaped groove. When the front mold one-shot inclined top slider and the front mold two-shot inclined top slider move downward, they drive the locking mechanism and the unlocking mechanism to move downward. At this time, the lower end of the extrusion plate in the unlocking mechanism first contacts with the one-shot parallel wear-resistant block. At this time, the front mold one-shot inclined top slider and the front mold two-shot inclined top slider continue to move downward, and the extrusion plate will not continue to move downward. The unlocking mechanism will push the locking plug in the locking mechanism out of the positioning hole; the front mold continues to move downward. At this time, because the front mold drives multiple guide assemblies to slide downward along the adjacent T-shaped inclined grooves, the two front mold one-shot inclined top sliders and the two front mold two-shot inclined top sliders are pushed by the guide assembly to move closer to each other until they are completely spliced, so that injection molding can be carried out.

[0015] 2. The two front mold one-shot inclined top sliders and the two front mold two-shot inclined top sliders move closer to each other and drive the mounting blocks thereon to move, so that the two adjacent mounting blocks drive the two adjacent L-shaped blocks to move closer to each other. At this time, the two L-shaped blocks push the two reset blocks to move closer to each other, and at the same time the reset blocks squeeze the reset springs.

[0016] 3. When the product is injected and needs to be opened, the front mold is moved upward. Under the action of the ejection and demoulding mechanism, the two symmetrical front mold one-shot inclined top sliders and the two symmetrical front mold two-shot inclined top sliders slide along the guide assembly and move away from each other, so that the two front mold one-shot inclined top sliders and the two front mold two-shot inclined top sliders are separated from the product to prevent the product from being damaged by the synchronous movement of the product during the subsequent upward movement of the two front mold one-shot inclined top sliders and the two front mold two-shot inclined top sliders; at the same time, under the action of the reset mechanism, the two L-shaped blocks slide relatively away from each other along the two L-shaped grooves. At this time, the two front mold one-shot inclined top sliders and the two front mold two-shot inclined top sliders are separated from the product. The inclined top slider and the two front mold two-shot inclined top sliders can move upward. The L-shaped block set can effectively prevent the two front mold one-shot inclined top sliders and the two front mold two-shot inclined top sliders from moving upward when they are not fully opened; especially when the ejection spring cannot rebound, the two front mold one-shot inclined top sliders and the two front mold two-shot inclined top sliders cannot be opened in time. If the reset mechanism is not set, the ejection spring fails to push the two front mold one-shot inclined top sliders and the two front mold two-shot inclined top sliders to open completely in time. At this time, once the two front mold one-shot inclined top sliders and the two front mold two-shot inclined top sliders move upward, the injection molded product will be squeezed and damaged.

[0017] 4. When the two front mold one-shot inclined top sliders and the two front mold two-shot inclined top sliders are fully opened, when the front mold continues to move upward, the end of the locking rod in the locking mechanism is inserted into the positioning hole, so that the front mold one-shot inclined top slider and the front mold two-shot inclined top slider remain relatively fixed with the guide assembly. When the front mold continues to move upward, it will drive the front mold one-shot inclined top slider and the front mold two-shot inclined top slider to move upward synchronously.

[0018] 5. The set guide assembly and locking mechanism can drive the two front mold one-shot inclined top sliders and the two front mold two-shot inclined top sliders to move upward synchronously, preventing the two front mold one-shot inclined top sliders and the two front mold two-shot inclined top sliders from continuing to move downward and causing dislocation during the upward movement; the set locking mechanism enables the two front mold one-shot inclined top sliders and the two front mold two-shot inclined top sliders to move up and down stably with the front mold and the guide assembly, and the movement directions and positions of the two front mold one-shot inclined top sliders and the two front mold two-shot inclined top sliders are symmetrical, preventing the two front mold one-shot inclined top sliders and the two front mold two-shot inclined top sliders from being unable to move synchronously due to resistance between components, thereby causing damage to the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional diagram of the structure of a two-color injection mold with a front mold oblique elastic block demoulding mechanism of the present invention; Figure 2 It is a schematic cross-sectional view of the front mold structure of the present invention; Figure 3 It is a cross-sectional view of the structure of a two-color injection mold with a front mold oblique elastic block demoulding mechanism of the present invention; Figure 4 It is a partial schematic cross-sectional view of the rear mold structure of the present invention; Figure 5 It is a first side sectional view of the front mold one-shot inclined top slider structure of the present invention; Figure 6 for Figure 5 A schematic diagram of the structure enlargement in the middle; Figure 7 It is a cross-sectional and side-sectional schematic diagram of the front mold one-shot inclined top slider structure of the present invention; Figure 8 for Figure 7 A magnified schematic diagram of the structure at B in the middle; Fig. 9 It is a bottom exploded view of the front mold one-shot inclined top slider, the front mold two-shot inclined top slider and the guide assembly of the present invention; Fig.10 It is an exploded view of the rear mold, the front mold, the one-shot inclined top slider and the reset mechanism structure of the present invention; Fig.11 It is an exploded view of the front mold one-shot inclined top slider, guide assembly, locking mechanism and unlocking mechanism of the present invention.

[0020] In the figure: 1, rear mold; 11, two-shot sliding inclined groove; 12, one-shot parallel groove; 13, docking hole; 14, two-shot sliding wear-resistant block; 15, one-shot parallel wear-resistant block; 16, L-shaped groove; 17, connecting groove; 18, through groove; 19, limit groove; 2, front mold; 21, upper mold cavity; 22, connecting groove; 23, connecting vertical plate; 24, guide inclined plate; 25, positioning hole; 3, front mold one-shot inclined top slider; 31, front mold two-shot inclined top slider; 3101, guide inclined block; 32, T-shaped inclined groove ; 33, inclined hole; 3301, inclined rod; 3302, top mold spring; 3303, upper top block; 34, installation groove; 35, contraction groove; 36, movable groove; 37, vertical groove; 38, lifting groove; 4, installation block; 41, L-shaped block; 5, fixed block; 51, reset block; 52, reset spring; 53, limit block; 6, extrusion block; 61, extrusion inclined groove; 62, locking rod; 63, movable block; 64, first spring piece; 7, extrusion plate; 71, lifting block; 72, second spring piece. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] See also Figures 1 to 11 The present invention provides a technical solution: a two-color injection mold with a front mold oblique spring block demoulding mechanism, comprising a rear mold 1, a plurality of docking holes 13 are symmetrically opened on the upper end of the rear mold 1, a front mold 2 is installed on the upper end of the rear mold 1, and an upper mold cavity 21 is opened on the lower end of the front mold 2, and a connecting groove 22 is opened on the top of the two upper mold cavities 21, wherein a front mold one-shot oblique top slider 3 is symmetrically installed in one upper mold cavity 21, and a front mold two-shot oblique top slider 31 is symmetrically installed in the other upper mold cavity 21, and a guide oblique block 3101 is symmetrically protruded downward at the lower end of the front mold two-shot oblique top slider 31, and the front mold one-shot oblique top slider 3 and The structural difference of the front mold two-shot inclined top slider 31 is that a guide inclined block 3101 is arranged at the lower end of the front mold two-shot inclined top slider 31, and the other structures of the front mold one-shot inclined top slider 3 and the front mold two-shot inclined top slider 31 are the same, and the front mold one-shot inclined top slider 3 and the front mold two-shot inclined top slider 31 are symmetrically installed with ejection demoulding mechanisms, and the two upper mold cavities 21 are symmetrically installed with guide components, and the front mold one-shot inclined top slider 3 and the front mold two-shot inclined top slider 31 are respectively slidably connected with the adjacent guide components, and the front and rear ends of the front mold one-shot inclined top slider 3 and the front mold two-shot inclined top slider 31 are provided with mounting grooves 34, and the mounting blocks 4 are detachably installed in the mounting grooves 34; A lower mold cavity is symmetrically provided at the upper end of the rear mold 1, and the lower mold cavity is aligned with the upper mold cavity 21 up and down, and a corresponding rear mold core is installed in the lower mold cavity. Two-shot sliding inclined grooves 11 are symmetrically provided on both sides of the two lower mold cavities, and a single-shot parallel groove 12 is provided on the side of the lower mold cavity on the side relatively far away from the two two-shot sliding inclined grooves 11. Specifically, two single-shot parallel grooves 12 and two-shot sliding inclined grooves 11 are symmetrically provided on the left and right sides of the lower mold cavity, and the two two-shot sliding inclined grooves 11 are located between the two one-shot parallel grooves 12, a two-shot sliding wear-resistant block 14 is fixedly installed in the two-shot sliding inclined groove 11, and a single-shot parallel wear-resistant block 15 is fixedly installed in the one-shot parallel groove 12, and a reset mechanism is installed at both ends of the two lower mold cavities in the rear mold 1.

[0023] See also Figures 2 to 5 , Fig. 9 , Fig.11The guide assembly includes a connecting vertical plate 23 fixedly installed in the upper mold cavity 21, and the sides of the two symmetrical connecting vertical plates 23 close to each other are set to slope surfaces, and the slope surfaces of the connecting vertical plates 23 are fixedly connected with guide inclined plates 24. The left and right sides of the front mold one-shot inclined top slider 3 and the front mold two-shot inclined top slider 31 are symmetrically provided with T-shaped inclined grooves 32 front and back, and the connecting vertical plates 23 and the guide inclined plates 24 are slidably connected to the adjacent T-shaped inclined grooves 32. The front and rear ends of the front mold one-shot inclined top slider 3 and the front mold two-shot inclined top slider 31 are installed with locking mechanisms and unlocking mechanisms.

[0024] A plurality of docking grooves matching the lower end of the guide assembly are provided in the lower die cavity, so that the lower end of the guide assembly can be accurately inserted into the lower die cavity.

[0025] When the front mold 2 moves upward to open the mold, the front mold 2 is first separated from the rear mold 1. At this time, the front mold first shot inclined top slider 3 and the front mold second shot inclined top slider 31 are pushed to move under the action of the ejection demoulding mechanism. At this time, the two front mold first shot inclined top sliders 3 move away from each other, and the two front mold second shot inclined top sliders 31 move away from each other. The lower end of the first-shot inclined top slider 3 of the front mold moves parallel to the first-shot parallel wear-resistant block 15, and the guide inclined block 3101 at the lower end of the second-shot inclined top slider 31 of the front mold slides downward along the second-shot sliding wear-resistant block 14, so that the two first-shot inclined top sliders 3 of the front mold and the two second-shot inclined top sliders 31 of the front mold are separated from the product, completing the demoulding, preventing the first-shot inclined top slider 3 of the front mold and the second-shot inclined top slider 31 from moving the product with the front mold 2 as it moves upward, causing product damage.

[0026] See also Figures 4 to 8 , Fig.11 The locking mechanism includes a contraction groove 35 provided on the inner side wall of the installation groove 34, and movable grooves 36 are symmetrically provided on the left and right side walls of the contraction groove 35. An extrusion block 6 is slidably installed in the contraction groove 35, and an extrusion inclined groove 61 is provided at the lower end of the extrusion block 6. A locking rod 62 is fixedly connected to the side of the extrusion block 6 away from the installation groove 34, and movable blocks 63 are symmetrically fixedly connected to the left and right sides of the extrusion block 6. A first elastic piece 64 is fixedly installed on one side of the movable block 63. A vertical groove 37 is provided downwardly through the lower end of the contraction groove 35, and the unlocking mechanism is installed in the vertical groove 37.

[0027] One end of the locking rod 62 passes through the contraction groove 35 and extends into the T-shaped inclined groove 32. The end of the locking rod 62 contacts the side of the guide inclined plate 24. The side of the guide inclined plate 24 is provided with a positioning hole 25 that matches the locking rod 62. After the front mold 2 moves upward, the two front mold first shot inclined top sliders 3 and the two front mold second shot inclined top sliders 31 are away from each other. When the two front mold one-shot inclined top sliders 3 and the two front mold two-shot inclined top sliders 31 are opened to the maximum, the movable block 63 is pushed to move under the action of the elastic force of the first spring piece 64, and the movable block 63 drives the extrusion block 6 to move into the contraction groove 35, and the extrusion block 6 drives the locking rod 62 to be inserted into the positioning hole 25 on the side of the guide inclined plate 24, so that the locking rod 62 and the guide inclined plate 24 are relatively fixed, so that the front mold one-shot inclined top slider 3 and the front mold two-shot inclined top slider 31 cannot slide along the guide inclined plate 24, so that multiple guide components are relatively fixed with the front mold one-shot inclined top slider 3 and the front mold two-shot inclined top slider 31.

[0028] The movable block 63 is connected to the movable groove 36 in a forward and backward sliding manner. One side of the first elastic sheet 64 abuts against the inner wall of the movable groove 36 . The first elastic sheet 64 applies elastic force to the movable block 63 .

[0029] When the extrusion block 6 moves forward and backward, the extrusion block 6 drives the movable block 63 to slide forward and backward along the movable groove 36. When the extrusion block 6 slides outside the contraction groove 35, the extrusion block 6 drives the movable block 63 to squeeze the first spring piece 64. When the extrusion block 6 needs to move into the contraction groove 35, the movable block 63 is pushed to move under the action of the elastic force of the first spring piece 64, and the movable block 63 drives the extrusion block 6 to slide into the contraction groove 35. At this time, the extrusion block 6 drives the locking rod 62 to extend into the T-shaped oblique groove 32.

[0030] The unlocking mechanism includes an extrusion plate 7 that is slidably installed in the vertical groove 37, and the left and right sides of the extrusion plate 7 are symmetrically fixedly connected with lifting blocks 71. The upper end of the lifting block 71 is fixedly installed with a second elastic piece 72. The upper end of the extrusion plate 7 is inclined on one side close to the installation groove 34. The upper end of the extrusion plate 7 is slidably connected to the extrusion inclined groove 61, and the lower end of the extrusion plate 7 abuts against the upper end of a parallel wear-resistant block 15.

[0031] The left and right inner walls of the vertical slot 37 are symmetrically provided with lifting slots 38 . The lifting block 71 is slidably connected to the lifting slots 38 , and the upper end of the second elastic sheet 72 abuts against the upper end of the lifting slots 38 .

[0032] When the extrusion plate 7 is inserted into the vertical groove 37, the slope on the extrusion plate 7 slides along the extrusion inclined groove 61, and the extrusion block 6 is pushed to move toward the outer end of the contraction groove 35 by the extrusion plate 7. The extrusion block 6 drives the movable block 63 to slide along the movable groove 36. The movable block 63 squeezes the first spring piece 64. At the same time, the extrusion block 6 drives the locking rod 62 to move out of the positioning hole 25 on the side of the guide inclined plate 24. At this time, the front mold first shot inclined top slider 3 and the front mold second shot inclined top slider 31 can both slide along the guide assembly.

[0033] See also Figure 2 and Figure 5The upper ends of the front mold one-shot inclined top slider 3 and the front mold two-shot inclined top slider 31 are symmetrically inclined front and back and are provided with inclined holes 33. The ejection demoulding mechanism includes an inclined rod 3301 slidably inserted in the inclined hole 33. The upper end of the inclined rod 3301 is sleeved with a top mold spring 3302. The upper end of the top mold spring 3302 abuts against the upper ejector block 3303. The lower end of the top mold spring 3302 is inserted into the inclined hole 33, and the lower end of the top mold spring 3302 abuts against the inclined hole 33. After the front mold 2 and the rear mold 1 are molded together, the top mold spring 3302 is in a compressed state. At this time, multiple top mold springs 3302 respectively apply elastic force to the front mold one-shot inclined top slider 3 and the front mold two-shot inclined top slider 31. The end of the inclined rod 3301 extends through the upper mold cavity 21 to the connecting groove 22 and is fixedly connected with the upper ejector block 3303. The upper ejector block 3303 is fixedly installed in the connecting groove 22.

[0034] The inclination angle of the inclined rod 3301 is respectively the same as the inclination angle of the slope of the adjacent connecting vertical plate 23 and the inclination angle of the guide inclined plate 24 .

[0035] When the front mold 2 moves upward and separates from the rear mold 1, under the action of the elastic force of the top mold spring 3302, the front mold one-shot inclined top slider 3 and the front mold two-shot inclined top slider 31 will not immediately move upward with the front mold 2. At the same time, under the push of the elastic force of the top mold spring 3302, the two left-right symmetrical front mold one-shot inclined top sliders 3 and the two left-right symmetrical front mold two-shot inclined top sliders 31 all slide along the guide assembly and move away from each other.

[0036] At this time, the lower end of the first-shot inclined top slider 3 of the front mold slides parallel to the first-shot parallel wear-resistant block 15, and at the same time, the lower end of the first-shot inclined top slider 3 of the front mold does not contact the lower end of the second-shot sliding wear-resistant block 14; the guide inclined block 3101 at the lower end of the second-shot inclined top slider 31 of the front mold slides downward along the second-shot sliding wear-resistant block 14, and at this time, the lower end of the second-shot inclined top slider 31 of the front mold does not contact the first-shot parallel wear-resistant block 15, thereby effectively solving the problem of the first-shot inclined top slider 3 and the second-shot inclined top slider 31 of the front mold moving in different directions, and there is no need to replace the rear mold 1, and then there is no need to disassemble and reinstall the product. It is only necessary to rotate the front mold 2 one hundred and eighty degrees, so as to realize two-color injection molding, which greatly improves work efficiency.

[0037] See also Figure 4 and Fig.10 The upper end of the rear mold 1 is provided with L-shaped grooves 16 symmetrically at both ends of the two lower mold cavities, and a connecting groove 17 is provided between the bottoms of two adjacent L-shaped grooves 16. A through groove 18 is provided on the side of the upper end of each L-shaped groove 16, and a limiting groove 19 is symmetrically provided on the upper and lower sides of each connecting groove 17; The reset mechanism includes a fixed stopper 5 fixedly connected to the middle position of the connecting groove 17, reset blocks 51 are arranged on the left and right sides of the fixed stopper 5, a reset spring 52 is fixedly inserted between the reset block 51 and the fixed stopper 5, and the upper and lower sides of the reset block 51 are symmetrically fixedly connected with limit blocks 53, and the outer side surface of the mounting block 4 is fixedly connected with an L-shaped block 41, and the lower end of the L-shaped block 41 passes downward through the through groove 18 and is inserted into the L-shaped groove 16.

[0038] The reset block 51 is slidably connected to the connecting groove 17 , the limit block 53 is slidably connected to the limit groove 19 , the L-shaped block 41 is slidably connected to the L-shaped groove 16 , and the side surface of the L-shaped block 41 abuts against the reset block 51 .

[0039] When the front mold 2 moves downward to close the rear mold 1, the front mold 2 drives the front mold first shot inclined top slider 3, the front mold second shot inclined top slider 31, and the guide assembly to move downward synchronously. At this time, the front mold first shot inclined top slider 3 and the front mold second shot inclined top slider 31 drive the L-shaped block 41 to move downward through the mounting block 4, and the lower end of the L-shaped block 41 is inserted downward into the L-shaped groove 16 along the through groove 18 and the upper end of the L-shaped groove 16; When the front mold first shot inclined top slider 3 and the front mold second shot inclined top slider 31 move downward, the locking mechanism and the unlocking mechanism are driven to move downward. At this time, the lower end of the extrusion plate 7 in the unlocking mechanism first contacts the first shot parallel wear-resistant block 15. At this time, the front mold first shot inclined top slider 3 and the front mold second shot inclined top slider 31 continue to move downward, while the extrusion plate 7 does not continue to move downward. At this time, the extrusion inclined groove 61 at the lower end of the extrusion block 6 slides along the slope surface at the upper end of the extrusion plate 7, so that the locking rod 62 in the locking mechanism is moved out of the positioning hole 25; The front mold 2 continues to move downward. At this time, the lower end of the first-shot inclined top slider 3 of the front mold abuts against the first-shot parallel wear-resistant block 15, so that the first-shot inclined top slider 3 of the front mold cannot move further downward, and the guide bevel block 3101 at the lower end of the second-shot inclined top slider 31 of the front mold abuts against the second-shot sliding wear-resistant block 14, so that the second-shot inclined top slider 31 of the front mold cannot move further downward. At this time, the front mold 2 drives multiple guide components to slide downward along the adjacent T-shaped bevel grooves 32 respectively, and the two first-shot front mold inclined top sliders 3 and the two second-shot front mold inclined top sliders 31 are pushed by the guide components to move closer to each other until they are completely spliced, so that injection molding can be carried out.

[0040] The two front mold one-shot inclined top sliders 3 and the two front mold two-shot inclined top sliders 31 move close to each other and drive the mounting blocks 4 thereon to move, so that the two adjacent mounting blocks 4 drive the two adjacent L-shaped blocks 41 to move close to each other. At this time, the L-shaped block 41 slides along the L-shaped groove 16, and the L-shaped block 41 pushes the reset block 51 to slide along the connecting groove 17. The reset block 51 drives the limit block 53 to slide along the limit groove 19 to guide and limit the reset block 51. At the same time, the reset block 51 squeezes the reset spring 52.

[0041] The upper end of the front mold 2 is connected to a driving mechanism, which can drive the front mold 2 to move up and down and rotate. These are all existing technologies and will not be described in detail at this time.

[0042] Working principle: when the product needs to be processed, the locking rod 62 in the locking mechanism is inserted into the positioning hole 25, and the L-shaped block 41 is separated from the L-shaped groove 16; when the front mold 2 is moved downward to close the rear mold 1, the front mold 2 drives the front mold first shot inclined top slider 3, the front mold second shot inclined top slider 31, the guide assembly, and the ejection demoulding mechanism to move downward synchronously. At this time, the front mold first shot inclined top slider 3 and the front mold second shot inclined top slider 31 drive the L-shaped block 41 to move downward through the mounting block 4, and the lower end of the L-shaped block 41 is inserted downward into the L-shaped groove 16 along the through groove 18 and the upper end of the L-shaped groove 16; When the front mold first shot inclined top slider 3 and the front mold second shot inclined top slider 31 move downward, the locking mechanism and the unlocking mechanism are driven to move downward. At this time, the lower end of the extrusion plate 7 in the unlocking mechanism first contacts the first shot parallel wear-resistant block 15. At this time, the front mold first shot inclined top slider 3 and the front mold second shot inclined top slider 31 continue to move downward, while the extrusion plate 7 does not continue to move downward. At this time, the extrusion inclined groove 61 at the lower end of the extrusion block 6 slides along the slope surface at the upper end of the extrusion plate 7, and the extrusion block 6 is pushed to move toward the outer end of the contraction groove 35 through the extrusion plate 7. The extrusion block 6 drives the locking rod 62 to move out of the positioning hole 25 on the side of the guide inclined plate 24; At this time, the lower end of the first shot inclined top slider 3 of the front mold abuts against the first shot parallel wear block 15, so that the first shot inclined top slider 3 of the front mold cannot move further downward, and the guide inclined block 3101 at the lower end of the second shot inclined top slider 31 of the front mold abuts against the second shot sliding wear block 14, so that the second shot inclined top slider 31 of the front mold cannot move further downward; The front mold 2 continues to move downward. At this time, the front mold 2 drives multiple guide components to slide downward along the adjacent T-shaped inclined grooves 32. The two front mold one-shot inclined top sliders 3 and the two front mold two-shot inclined top sliders 31 are pushed by the guide components to move closer to each other until they are completely spliced, so that injection molding can be carried out. During the movement of the front mold one-shot inclined top slider 3 and the front mold two-shot inclined top slider 31, they slide along the inclined rod 3301. At the same time, the front mold one-shot inclined top slider 3 and the front mold two-shot inclined top slider 31 squeeze the top mold spring 3302.

[0043] The two front mold one-shot inclined top sliders 3 and the two front mold two-shot inclined top sliders 31 move close to each other and drive the mounting blocks 4 thereon to move, so that the two adjacent mounting blocks 4 drive the two adjacent L-shaped blocks 41 to move close to each other. At this time, the L-shaped block 41 slides along the L-shaped groove 16, and the L-shaped block 41 pushes the reset block 51 to slide along the connecting groove 17. The reset block 51 drives the limit block 53 to slide along the limit groove 19 to guide and limit the reset block 51. At the same time, the reset block 51 squeezes the reset spring 52.

[0044] When the injection molding of the product is completed and the mold needs to be opened, the front mold 2 is moved upward. When the front mold 2 moves upward and separates from the rear mold 1, under the action of the elastic force of the top mold spring 3302, the front mold one-shot inclined top slider 3 and the front mold two-shot inclined top slider 31 will not immediately move upward with the front mold 2. At the same time, under the push of the elastic force of the top mold spring 3302, the two left-right symmetrical front mold one-shot inclined top sliders 3 and the two left-right symmetrical front mold two-shot inclined top sliders 31 all slide along the guide assembly and move away from each other, so that the two front mold one-shot inclined top sliders 3 and the two front mold two-shot inclined top sliders 31 are separated from the product, preventing the product from being damaged by the synchronous movement of the product during the subsequent upward movement of the two front mold one-shot inclined top sliders 3 and the two front mold two-shot inclined top sliders 31. At the same time, under the action of the elastic force of the reset spring 52, the two reset blocks 51 are pushed to move away from each other synchronously, and the reset block 51 pushes the two L-shaped blocks 41 to slide relatively away along the two L-shaped grooves 16, so that the L-shaped block 41 moves to the bottom of the through groove 18. At this time, the two front mold one-shot inclined top sliders 3 and the two front mold two-shot inclined top sliders 31 can move upward. The L-shaped block 41 can effectively prevent the two front mold one-shot inclined top sliders 3 and the two front mold two-shot inclined top sliders 31 from moving upward when they are not fully opened. In particular, when the top mold spring 3302 is unable to rebound, the two front mold one-shot inclined top sliders 3 and the two front mold two-shot inclined top sliders 31 cannot be opened in time. If a reset mechanism is not set, the top mold spring 3302 fails to push the two front mold one-shot inclined top sliders 3 and the two front mold two-shot inclined top sliders 31 to be fully opened in time. At this time, once the two front mold one-shot inclined top sliders 3 and the two front mold two-shot inclined top sliders 31 move upward, the injection molded product will be squeezed and damaged.

[0045] When the two front mold one-shot inclined top slides 3 and the two front mold two-shot inclined top slides 31 are fully opened, when the front mold 2 continues to move upward, the front mold 2 drives the two front mold one-shot inclined top slides 3, the two front mold two-shot inclined top slides 31 and the guide assembly to move upward. At this time, the lifting block 71 and the extrusion plate 7 are kept stationary under the action of the elastic force of the second spring piece 72. At the same time, the movable block 63 is pushed to reset under the action of the elastic force of the first spring piece 64. The movable block 63 drives the extrusion block 6 and the locking rod 62 to reset, so that the end of the locking rod 62 is inserted into the positioning hole 25, so that the front mold one-shot inclined top slide 3 and the front mold two-shot inclined top slide 31 remain relatively fixed with the guide assembly. When the front mold 2 continues to move upward, it will drive the front mold one-shot inclined top slide 3 and the front mold two-shot inclined top slide 31 to move upward synchronously.

[0046] The guide assembly and locking mechanism provided can drive the two front mold one-shot inclined top sliders 3 and the two front mold two-shot inclined top sliders 31 to move upward synchronously, preventing the two front mold one-shot inclined top sliders 3 and the two front mold two-shot inclined top sliders 31 from continuing to move downward and causing dislocation during the upward movement.

[0047] Through the provided locking mechanism, the two front mold one-shot inclined top sliders 3 and the two front mold two-shot inclined top sliders 31 can stably move up and down along with the front mold 2 and the guide assembly, and the moving directions and positions of the two front mold one-shot inclined top sliders 3 and the two front mold two-shot inclined top sliders 31 are symmetrical, preventing the two front mold one-shot inclined top sliders 3 and the two front mold two-shot inclined top sliders 31 from being unable to move synchronously due to resistance between components and other reasons, thereby preventing damage to the equipment.

[0048] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A two-color injection mold with a front mold oblique spring block demoulding mechanism, comprising a rear mold (1), wherein a plurality of docking holes (13) are symmetrically opened at the upper end of the rear mold (1), and a front mold (2) is mounted at the upper end of the rear mold (1), characterized in that: The lower end of the front mold (2) is recessed upward to form an upper mold cavity (21), and the tops of the two upper mold cavities (21) are penetrated upward to form a connecting groove (22), one of the upper mold cavities (21) is symmetrically installed with a front mold one-shot inclined top slider (3), and the other upper mold cavity (21) is symmetrically installed with a front mold two-shot inclined top slider (31), and the lower end of the front mold two-shot inclined top slider (31) is symmetrically protruding downward to form a guide inclined block (3101), and the front mold one-shot inclined top slider (31) is symmetrically installed with a guide inclined block (3101). The ejection and demoulding mechanisms are symmetrically mounted on the top slider (3) and the front mold two-shot inclined top slider (31), and guide components are symmetrically mounted in the two upper mold cavities (21). The front mold one-shot inclined top slider (3) and the front mold two-shot inclined top slider (31) are respectively slidably connected to adjacent guide components. The front mold one-shot inclined top slider (3) and the front mold two-shot inclined top slider (31) are both provided with mounting grooves (34) at both front and rear ends, and mounting blocks (4) are detachably mounted in the mounting grooves (34); The upper end of the rear mold (1) is symmetrically provided with a lower mold cavity, and both sides of the two lower mold cavities are symmetrically provided with two-shot sliding inclined grooves (11) on the front and back sides. The side of the lower mold cavity is provided with a single shot parallel groove (12) on the side relatively away from the two two-shot sliding inclined grooves (11). A two-shot sliding wear-resistant block (14) is fixedly installed in the two-shot sliding inclined groove (11), and a single shot parallel wear-resistant block (15) is fixedly installed in the single shot parallel groove (12). Reset mechanisms are installed at both ends of the two lower mold cavities in the rear mold (1).

2. A two-color injection mold with a front mold oblique spring block demoulding mechanism according to claim 1, characterized in that: The guide assembly comprises a connecting vertical plate (23) fixedly mounted in the upper mold cavity (21); the two connecting vertical plates (23) symmetrically disposed on their sides close to each other are both provided with a slope surface; a guiding inclined plate (24) is fixedly connected to the slope surface of the connecting vertical plate (23); the left and right sides of the front mold first shot inclined top slider (3) and the front mold second shot inclined top slider (31) are both symmetrically provided with T-shaped inclined grooves (32) in a front-to-back manner; the connecting vertical plate (23) and the guiding inclined plate (24) are both slidably connected to adjacent T-shaped inclined grooves (32); and the front and rear ends of the front mold first shot inclined top slider (3) and the front mold second shot inclined top slider (31) are both provided with a locking mechanism and an unlocking mechanism.

3. A two-color injection mold with a front mold oblique spring block demoulding mechanism according to claim 2, characterized in that: The locking mechanism comprises a contraction groove (35) formed on the inner side wall of the installation groove (34), movable grooves (36) are symmetrically formed on the left and right side walls of the contraction groove (35), an extrusion block (6) is slidably mounted in the contraction groove (35) in the front and rear directions, an extrusion inclined groove (61) is formed at the lower end of the extrusion block (6), a locking plug rod (62) is fixedly connected to the side of the extrusion block (6) away from the installation groove (34), movable blocks (63) are symmetrically fixedly connected to the left and right sides of the extrusion block (6), a first spring sheet (64) is fixedly mounted on one side of the movable block (63), a vertical groove (37) is formed through the lower end of the contraction groove (35) and the unlocking mechanism is mounted in the vertical groove (37).

4. A two-color injection mold with a front mold oblique spring block demoulding mechanism according to claim 3, characterized in that: One end of the locking rod (62) passes through the contraction groove (35) and extends into the T-shaped inclined groove (32). The end of the locking rod (62) contacts the side surface of the guide inclined plate (24). The side surface of the guide inclined plate (24) is provided with a positioning hole (25) matching the locking rod (62).

5. A two-color injection mold with a front mold oblique spring block demoulding mechanism according to claim 3, characterized in that: The movable block (63) is slidably connected to the movable groove (36) in a forward and backward manner, and one side of the first elastic sheet (64) abuts against the inner side wall of the movable groove (36).

6. A two-color injection mold with a front mold oblique spring block demoulding mechanism according to claim 3, characterized in that: The unlocking mechanism comprises an extrusion plate (7) slidably mounted in the vertical slot (37) up and down, a lifting block (71) being symmetrically fixedly connected to the left and right sides of the extrusion plate (7), a second spring piece (72) being fixedly mounted on the upper end of the lifting block (71), a side of the upper end of the extrusion plate (7) close to the mounting slot (34) being in a sloped surface, the upper end of the extrusion plate (7) being slidably connected to the extrusion inclined slot (61), and the lower end of the extrusion plate (7) being in contact with the upper end of a parallel wear-resistant block (15).

7. A two-color injection mold with a front mold oblique spring block demoulding mechanism according to claim 6, characterized in that: The left and right inner walls of the vertical slot (37) are symmetrically provided with lifting slots (38), the lifting block (71) is slidably connected to the lifting slot (38) up and down, and the upper end of the second elastic sheet (72) abuts against the upper end of the lifting slot (38).

8. The two-color injection mold with a front mold oblique elastic block demoulding mechanism according to claim 1, characterized in that: The upper ends of the front mold first shot inclined top slider (3) and the front mold second shot inclined top slider (31) are both symmetrically inclined and have inclined holes (33) formed thereon. The ejection and demoulding mechanism comprises an inclined rod (3301) slidably inserted into the inclined hole (33). The upper end of the inclined rod (3301) is sleeved with an ejection mold spring (3302). The upper end of the ejection mold spring (3302) abuts against an upper ejector block (3303). The end of the inclined rod (3301) passes through the upper mold cavity (21) and extends into the connecting groove (22) and is fixedly connected to the upper ejector block (3303). The upper ejector block (3303) is fixedly installed in the connecting groove (22).

9. A two-color injection mold with a front mold oblique spring block demoulding mechanism according to claim 1, characterized in that: The upper end of the rear mold (1) is provided with L-shaped grooves (16) symmetrically at both the front and rear ends of the two lower mold cavities, a connecting groove (17) is provided between the bottoms of two adjacent L-shaped grooves (16), a through groove (18) is provided on the side surface of the upper end of each L-shaped groove (16), and each connecting groove (17) is provided with a limit groove (19) symmetrically on the upper and lower side surfaces; The reset mechanism comprises a fixed stopper (5) fixedly connected to the middle position of the connecting groove (17), a reset block (51) is arranged on both the left and right sides of the fixed stopper (5), a reset spring (52) is fixedly inserted between the reset block (51) and the fixed stopper (5), and a limit block (53) is symmetrically fixedly connected to the upper and lower sides of the reset block (51), and an L-shaped block (41) is fixedly connected to the outer side surface of the mounting block (4), and the lower end of the L-shaped block (41) passes downward through the through groove (18) and is inserted into the L-shaped groove (16).

10. A two-color injection mold with a front mold oblique spring block demoulding mechanism according to claim 9, characterized in that: The reset block (51) is slidably connected to the connecting groove (17) left and right, the limit block (53) is slidably connected to the limit groove (19) left and right, the L-shaped block (41) is slidably connected to the L-shaped groove (16) left and right, and the side surface of the L-shaped block (41) abuts against the reset block (51).

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