A double-color injection mold with a front mold inclined elastic block demolding mechanism

Abstract

The application discloses to the technical field of double-color injection mold, specifically a double-color injection mold with a front mold inclined elastic block demolding mechanism, which comprises a rear mold, a plurality of butt joints are symmetrically arranged on the upper end of the rear mold, a front mold is installed on the upper end of the rear mold, an upper mold cavity is recessed and arranged on the lower end of the front mold, a connecting groove is vertically and symmetrically arranged on the top of the two upper mold cavities, an inclined top ejector slide block is symmetrically installed in one of the upper mold cavities, and the beneficial effects of the application are as follows: when the product is processed, the front mold is combined with the rear mold, the front mold drives the front mold one inclined top ejector slide block, the front mold two inclined top ejector slide block, the guide assembly and the ejection demolding 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, and the front mold one inclined top ejector slide block and the front mold two inclined top ejector slide block drive the locking mechanism and the unlocking mechanism to move downward.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of double-color injection mold, in particular to a double-color injection mold with front mold inclined ejector mechanism. BACKGROUND

[0002] Double-color injection molding refers to the injection of two different materials into the same mold to form a part. Some of the two materials are different colors, and some are different in hardness, thereby improving the appearance and assembly performance of the product. The existing double-color mold is composed of two sets of front mold and rear mold, and the rear mold part of the double-color mold needs to be the same. During the clamping process of the front mold, the one-shot inclined ejector block needs to move parallelly for one-shot injection molding of the product, and the two-shot inclined ejector block needs to move obliquely downward for two-shot injection molding of the product. Therefore, we need to make two-direction sliding wear blocks in the rear mold. The existing rear mold cannot meet the above two processing methods at the same time. The existing processing method is to replace the rear mold continuously, and the product needs to be taken out and placed into a new rear mold. This not only increases the difficulty of work, but also makes it difficult to accurately place the product into the new rear mold cavity during the process of placing the product into the new rear mold, thereby causing defects in the injection molded product, and even causing the product to be damaged, which is not conducive to actual use. SUMMARY

[0003] The present application aims to provide a double-color injection mold with front mold inclined ejector mechanism to solve the problems in the background.

[0004] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a double-color injection mold with front mold inclined ejector mechanism, comprising a rear mold, a plurality of butt joints are symmetrically formed in the upper end of the rear mold, a front mold is installed on the upper end of the rear mold, an upper mold cavity is recessed and formed in the lower end of the front mold, a connecting groove is vertically and symmetrically formed in the top of each upper mold cavity, a front mold one-shot inclined ejector block is symmetrically installed in one of the upper mold cavities, a front mold two-shot inclined ejector block is symmetrically installed in the other upper mold cavity, a guide inclined block is symmetrically protruded and arranged at the lower end of the front mold two-shot inclined ejector block, an ejection mechanism is symmetrically installed on the front mold one-shot inclined ejector block and the front mold two-shot inclined ejector block, a guide assembly is symmetrically installed in each upper mold cavity, the front mold one-shot inclined ejector block and the front mold two-shot inclined ejector block are respectively connected with the adjacent guide assembly, an installation groove is formed in the front and rear ends of the front mold one-shot inclined ejector block and the front mold two-shot inclined ejector block, and an installation block is detachably installed in the installation groove.

[0005] The upper end of the rear mold is symmetrically provided with lower mold cavities, two sides of the two lower mold cavities are symmetrically provided with two-shooting lower sliding inclined grooves, the side surface of the lower mold cavity is provided with a one-shooting parallel recess on the side far away from the two-shooting lower sliding inclined grooves, the two-shooting lower sliding wear-resistant blocks are fixedly installed in the two-shooting lower sliding inclined grooves, a one-shooting parallel wear-resistant block is fixedly installed in the one-shooting parallel recess, and reset mechanisms are installed at the two ends of the two lower mold cavities in the rear mold.

[0006] As a further scheme of the present application, the guiding assembly comprises connecting vertical plates fixedly installed in the upper mold cavities, the side close to each other of the two left-right symmetric connecting vertical plates is provided as a slope surface, the slope surface of the connecting vertical plate is fixedly connected with a guiding inclined plate, the left-right sides of the front mold one-shooting inclined top sliding block and the front mold two-shooting inclined top sliding block are symmetrically provided with T-shaped inclined grooves, and the connecting vertical plate and the guiding inclined plate are slidably connected with the adjacent T-shaped inclined grooves.

[0007] As a further scheme of the present application, the locking mechanism comprises a contraction groove provided on the inner side wall of the installation groove, the left-right side walls of the contraction groove are symmetrically provided with movable grooves, an extrusion block is slidably installed in the contraction groove, the lower end of the extrusion block is provided with an extrusion inclined groove, the side far away from the installation groove of the extrusion block is fixedly connected with a locking plug rod, the left-right sides of the extrusion block are symmetrically fixedly connected with movable blocks, one side of the movable block is fixedly installed with a first elastic sheet, the lower end of the contraction groove is downwardly provided with a vertical groove, and the unlocking mechanism is installed in the vertical groove.

[0008] As a further scheme of the present application, one end of the locking plug rod extends to the T-shaped inclined groove through the contraction groove, the end of the locking plug rod is in contact with the side surface of the guiding inclined plate, and the side surface of the guiding inclined plate is provided with a positioning hole matched with the locking plug rod.

[0009] As a further scheme of the present application, the movable block is slidably connected with the movable groove, and one side of the first elastic sheet is in abutment with the inner side wall of the movable groove.

[0010] As a further scheme of the present application, the unlocking mechanism comprises an extrusion plate slidably installed in the vertical groove, the left-right sides of the extrusion plate are symmetrically fixedly connected with lifting blocks, the upper end of the lifting block is fixedly installed with a second elastic sheet, the side close to the installation groove of the upper end of the extrusion plate is a slope surface, the upper end of the extrusion plate is slidably connected with the extrusion inclined groove, and the lower end of the extrusion plate is in abutment with the upper end of the one-shooting parallel wear-resistant block.

[0011] As a further scheme of the present application, the left-right inner side walls of the vertical groove are symmetrically provided with lifting grooves, the lifting block is slidably connected with the lifting groove, and the upper end of the second elastic sheet is in abutment with the upper end of the lifting groove.

[0012] As a further scheme of the present application, the upper end of the front mold is symmetrically inclined to open a slant hole, the ejection demolding mechanism comprises a slant rod slidingly inserted into the slant hole, the upper end of the slant rod is sleeved with a top die spring, the upper end of the top die spring is abutted with an upper top block, the end of the slant rod extends into the connecting groove through the upper mold cavity and is fixedly connected with the upper top block, and the upper top block is fixedly installed in the connecting groove.

[0013] As a further scheme of the present application, the upper end of the front mold is symmetrically inclined to open a slant hole, the ejection demolding mechanism comprises a slant rod slidingly inserted into the slant hole, the upper end of the slant rod is sleeved with a top die spring, the upper end of the top die spring is abutted with an upper top block, the end of the slant rod extends into the connecting groove through the upper mold cavity and is fixedly connected with the upper top block, and the upper top block is fixedly installed in the connecting groove.

[0014] The reset mechanism comprises a fixed block fixedly connected at the middle position of the connecting groove, the left and right sides of the fixed block are provided with reset blocks, the reset spring is fixedly inserted between the reset blocks and the fixed block, the upper and lower sides of the reset block are symmetrically fixedly connected with limiting blocks, the outer side of the mounting block is fixedly connected with an L-shaped block, and the lower end of the L-shaped block is inserted into the L-shaped groove through the through groove.

[0015] As a further scheme of the present application, the reset block is slidingly connected with the connecting groove, the limiting block is slidingly connected with the limiting groove, the L-shaped block is slidingly connected with the L-shaped groove, and the side surface of the L-shaped block is abutted with the reset block.

[0016] The present application has the following advantages:

[0017] 1. When the product is processed, the front mold is downwardly combined with the rear mold, the front mold drives the front mold one ejection slant top sliding block, the front mold two ejection slant top sliding block, the guide assembly and the ejection demolding mechanism to synchronously move downwardly, 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, the front mold one ejection slant top sliding block and the front mold two ejection slant top sliding block drive the locking mechanism and the unlocking mechanism to move downwardly, at this time, the lower end of the extrusion plate in the unlocking mechanism first contacts the one ejection parallel wear-resistant block, at this time, the front mold one ejection slant top sliding block and the front mold two ejection slant top sliding block continue to move downwardly, and the extrusion plate does not continue to move downwardly, the unlocking mechanism pushes the locking plug rod in the locking mechanism to move out of the positioning hole; the front mold continues to move downwardly, at this time, since the front mold drives multiple guide assemblies to respectively slide along adjacent T-shaped inclined grooves, the guide assembly pushes the two front mold one ejection slant top sliding blocks and the two front mold two ejection slant top sliding blocks to move close to each other, until completely spliced, so that the injection molding processing can be performed.

[0018] 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, driving the mounting blocks on them 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.

[0019] 3. When the product is injected and the mold needs to be opened, the front mold moves 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 moving synchronously 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, causing damage to the product; 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 provided 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 a reset mechanism is not provided, 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 fully open 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.

[0020] 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 and the guide assembly remain relatively fixed. 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.

[0021] 5. The guide assembly and locking mechanism provided 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 locking mechanism provided can enable 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, etc., causing damage to the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This 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;

[0023] Figure 2 This is a schematic cross-sectional view of the front mold structure of the present invention;

[0024] Figure 3 This is a cross-sectional view of the structure of a two-color injection mold with a front mold oblique elastic block demoulding mechanism according to the present invention;

[0025] Figure 4 It is a partial schematic cross-sectional view of the rear mold structure of the present invention;

[0026] Figure 5 This is a first side sectional view of the front mold one-shot inclined top slider structure of the present invention;

[0027] Figure 6 for Figure 5 A schematic diagram of the structure at center A;

[0028] Figure 7 Schematic diagram of the cross section and side section of the front mold one-shot inclined top slider structure of the present invention;

[0029] Figure 8 for Figure 7 A magnified schematic diagram of the structure at point B in the middle;

[0030] Figure 9 This is an exploded bottom view of the front mold first shot inclined top slider, the front mold second shot inclined top slider and the guide assembly of the present invention;

[0031] Figure 10 This is an exploded view of the rear mold, front mold one-shot inclined ejector slider and reset mechanism structure of the present invention;

[0032] Figure 11 This is an exploded view of the front mold one-shot inclined ejector slider, guide assembly, locking mechanism and unlocking mechanism of the present invention.

[0033] In the figure: 1, back mould; 11, two-shot lower sliding chute; 12, one-shot parallel groove; 13, butt joint hole; 14, two-shot lower sliding wear-resistant block; 15, one-shot parallel wear-resistant block; 16, L-shaped groove; 17, communication groove; 18, through groove; 19, limiting groove; 2, front mould; 21, upper mould cavity; 22, connecting groove; 23, connecting vertical plate; 24, guide inclined plate; 25, positioning hole; 3, front mould one-shot inclined ejector slide block; 31, front mould two-shot inclined ejector slide block; 3101, guide inclined block; 32, T-shaped inclined groove; 33, inclined hole; 3301, inclined rod; 3302, ejector spring; 3303, upper ejector block; 34, mounting groove; 35, contraction groove; 36, movable groove; 37, vertical groove; 38, lifting groove; 4, mounting block; 41, L-shaped block; 5, fixed stop block; 51, reset block; 52, reset spring; 53, limiting block; 6, extrusion block; 61, extrusion inclined groove; 62, locking insertion rod; 63, movable block; 64, first elastic sheet; 7, extrusion plate; 71, lifting block; 72, second elastic sheet. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0035] Please refer to Figures 1 to 11 The present application provides a technical solution: a two-color injection mold with a front mould inclined ejector block demolding mechanism, comprising a back mould 1, a plurality of butt joint holes 13 are symmetrically formed in the upper end of the back mould 1, a front mould 2 is mounted on the upper end of the back mould 1, upper mould cavities 21 are recessed and formed in the lower end of the front mould 2, a connecting groove 22 is formed in the top of each of the two upper mould cavities 21, a front mould one-shot inclined ejector slide block 3 is symmetrically mounted in one of the upper mould cavities 21, a front mould two-shot inclined ejector slide block 31 is symmetrically mounted in the other upper mould cavity 21, a guide inclined block 3101 is symmetrically protruded and arranged at the lower end of the front mould two-shot inclined ejector slide block 31, the front mould one-shot inclined ejector slide block 3 and the front mould two-shot inclined ejector slide block 31 are different in structure in that the front mould two-shot inclined ejector slide block 31 is provided with the guide inclined block 3101, and the other structures of the front mould one-shot inclined ejector slide block 3 and the front mould two-shot inclined ejector slide block 31 are the same, an ejection demolding mechanism is symmetrically mounted on each of the front mould one-shot inclined ejector slide block 3 and the front mould two-shot inclined ejector slide block 31, a guide assembly is symmetrically mounted in each of the two upper mould cavities 21, the front mould one-shot inclined ejector slide block 3 and the front mould two-shot inclined ejector slide block 31 are respectively slidably connected with the adjacent guide assemblies, a mounting groove 34 is formed in the front and back ends of each of the front mould one-shot inclined ejector slide block 3 and the front mould two-shot inclined ejector slide block 31, and a mounting block 4 is detachably mounted in the mounting groove 34.

[0036] The upper end of the back mold 1 is symmetrically provided with a lower mold cavity, the lower mold cavity is vertically aligned with the upper mold cavity 21, a corresponding back mold core is installed in the lower mold cavity, two two-way lower sliding inclined grooves 11 are symmetrically provided on the left and right sides of the lower mold cavity, a one-way parallel groove 12 is provided on the side of the lower mold cavity away from the two two-way lower sliding inclined grooves 11, specifically, two one-way parallel grooves 12 are symmetrically provided on the left and right sides of the lower mold cavity, the two two-way lower sliding inclined grooves 11 are between the two one-way parallel grooves 12, a two-way lower sliding wear-resistant block 14 is fixedly installed in the two-way lower sliding inclined groove 11, and a one-way parallel wear-resistant block 15 is fixedly installed in the one-way parallel groove 12. The back mold 1 is provided with a reset mechanism at the two ends of the two lower mold cavities.

[0037] Please refer to Figures 2 to 5 、 Figure 9 、 Figure 11 The guiding assembly comprises a connecting vertical plate 23 fixedly installed in the upper mold cavity 21, the side of the left and right symmetric two connecting vertical plates 23 close to each other is provided as a slope, the slope of the connecting vertical plate 23 is fixedly connected with a guiding inclined plate 24, the left and right sides of the front mold one-way inclined top sliding block 3 and the front mold two-way inclined top sliding block 31 are symmetrically provided with a T-shaped inclined groove 32, the connecting vertical plate 23 and the guiding inclined plate 24 are slidably connected with the adjacent T-shaped inclined groove 32, and the front and rear ends of the front mold one-way inclined top sliding block 3 and the front mold two-way inclined top sliding block 31 are provided with a locking mechanism and an unlocking mechanism.

[0038] A plurality of butt joints corresponding to the lower end of the guiding assembly are provided in the lower mold cavity, so that the lower end of the guiding assembly can be accurately inserted into the lower mold cavity.

[0039] When the front mold 2 moves upward to open the mold, the front mold 2 is first separated from the back mold 1, at this time, the front mold one-way inclined top sliding block 3 and the front mold two-way inclined top sliding block 31 are pushed to move under the action of the ejection demolding mechanism, at this time, the two front mold one-way inclined top sliding blocks 3 move away from each other, and the two front mold two-way inclined top sliding blocks 31 move away from each other.

[0040] The lower end of the front mold one-way inclined top sliding block 3 moves in parallel along the one-way parallel wear-resistant block 15, and the guiding inclined block 3101 of the lower end of the front mold two-way inclined top sliding block 31 slides downward along the two-way lower sliding wear-resistant block 14, so that the two front mold one-way inclined top sliding blocks 3 and the two front mold two-way inclined top sliding blocks 31 are separated from the product, the demolding is completed, and the product is prevented from being moved by the front mold one-way inclined top sliding block 3 and the front mold two-way inclined top sliding block 31 during the upward movement of the front mold 2, thereby causing damage to the product.

[0041] Please refer to Figures 4 to 8 、 Figure 11The locking mechanism comprises a contraction groove 35 formed on the inner side wall of the mounting groove 34, the left and right side walls of the contraction groove 35 are symmetrically provided with movable grooves 36, a pressing block 6 is slidably mounted in the contraction groove 35, the lower end of the pressing block 6 is provided with a pressing inclined groove 61, the side of the pressing block 6 away from the mounting groove 34 is fixedly connected with a locking plug 62, the left and right sides of the pressing block 6 are symmetrically fixedly connected with movable blocks 63, one side of the movable block 63 is fixedly mounted with a first elastic sheet 64, the lower end of the contraction groove 35 is downwardly and continuously provided with a vertical groove 37, and the unlocking mechanism is mounted in the vertical groove 37.

[0042] One end of the locking plug 62 extends into the T-shaped inclined groove 32 through the contraction groove 35, the end of the locking plug 62 is in contact with 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 matched with the locking plug 62, after the two front molds 2 are moved upward, the two front mold one inclined top sliding blocks 3 and the two front mold two inclined top sliding blocks 31 are away from each other;

[0043] When the two front mold one inclined top sliding blocks 3 and the two front mold two inclined top sliding blocks 31 are opened to the maximum, the movable blocks 63 are driven to move under the action of the elasticity of the first elastic sheets 64, the movable blocks 63 drive the pressing block 6 to move into the contraction groove 35, the pressing block 6 drives the locking plug 62 to insert into the positioning hole 25 in the side surface of the guide inclined plate 24, so that the locking plug 62 is relatively fixed with the guide inclined plate 24, thereby the front mold one inclined top sliding blocks 3 and the front mold two inclined top sliding blocks 31 cannot slide along the guide inclined plate 24, and the plurality of guide assemblies are relatively fixed with the front mold one inclined top sliding blocks 3 and the front mold two inclined top sliding blocks 31.

[0044] The movable blocks 63 are slidably connected with the movable grooves 36, one side of the first elastic sheets 64 is in abutment with the inner side wall of the movable grooves 36, and the first elastic sheets 64 apply elastic force to the movable blocks 63.

[0045] When the pressing block 6 moves forward and backward, the pressing block 6 drives the movable blocks 63 to slide forward and backward along the movable grooves 36, when the pressing block 6 slides out of the contraction groove 35, the pressing block 6 drives the movable blocks 63 to press the first elastic sheets 64, when the pressing block 6 needs to move into the contraction groove 35, the movable blocks 63 are driven to move under the action of the elasticity of the first elastic sheets 64, the movable blocks 63 drive the pressing block 6 to slide into the contraction groove 35, at this time, the pressing block 6 drives the locking plug 62 to extend into the T-shaped inclined groove 32.

[0046] The unlocking mechanism comprises a pressing plate 7 slidably mounted in the vertical groove 37, the left and right sides of the pressing plate 7 are symmetrically fixedly connected with lifting blocks 71, the upper end of the lifting block 71 is fixedly mounted with a second elastic sheet 72, one side of the upper end of the pressing plate 7 close to the mounting groove 34 is a slope surface, the upper end of the pressing plate 7 is slidably connected with the pressing inclined groove 61, and the lower end of the pressing plate 7 is in abutment with the upper end of the first parallel wear-resistant block 15.

[0047] The left and right inner side walls of the vertical groove 37 are symmetrically provided with lifting grooves 38, and the lifting blocks 71 are in sliding connection with the lifting grooves 38 in an up-down direction. The upper end of the second elastic sheet 72 is in abutment with the upper end of the lifting groove 38.

[0048] When the extrusion plate 7 is inserted into the vertical groove 37, the slope surface on the extrusion plate 7 slides along the extrusion inclined groove 61, the extrusion plate 7 pushes the extrusion block 6 to move towards the outer end of the contraction groove 35, the extrusion block 6 drives the movable block 63 to slide along the movable groove 36, the movable block 63 extrudes the first elastic sheet 64, and at the same time, the extrusion block 6 drives the locking insertion rod 62 to move out of the positioning hole 25 in the side of the guide inclined plate 24. At this time, the front mold one ejector slide block 3 and the front mold two ejector slide block 31 can slide along the guide assembly.

[0049] Please refer to Figure 2 and Figure 5 The upper end of the front mold one ejector slide block 3 and the upper end of the front mold two ejector slide block 31 are symmetrically and obliquely provided with inclined holes 33. The ejecting and demolding mechanism comprises an inclined rod 3301 which is slidingly inserted into the inclined hole 33. The upper end of the inclined rod 3301 is sleeved with an ejection spring 3302. The upper end of the ejection spring 3302 is in abutment with an upper top block 3303. The lower end of the ejection spring 3302 is inserted into the inclined hole 33 and in abutment with the inclined hole 33. After the front mold 2 and the rear mold 1 are combined, the ejection spring 3302 is in a compressed state. At this time, a plurality of ejection springs 3302 respectively apply elastic force to the front mold one ejector slide block 3 and the front mold two ejector slide block 31. The end of the inclined rod 3301 extends into the connecting groove 22 through the upper mold cavity 21 and is fixedly connected with the upper top block 3303. The upper top block 3303 is fixedly installed in the connecting groove 22.

[0050] The inclination angles of the inclined rod 3301 are respectively the same as the inclination angles of the slope surfaces of the adjacent connecting vertical plates 23 and the inclination angles of the guide inclined plates 24.

[0051] When the front mold 2 moves upwards and separates from the rear mold 1, the front mold one ejector slide block 3 and the front mold two ejector slide block 31 will not immediately move upwards with the front mold 2 under the action of the elastic force of the ejection spring 3302. At the same time, the two front mold one ejector slide blocks 3 and the two front mold two ejector slide blocks 31 symmetrically on the left and right sides slide along the guide assembly and move away from each other under the pushing of the elastic force of the ejection spring 3302.

[0052] At this time, the lower end of the front mold one injection oblique top sliding block 3 slides along a parallel wear-resistant block 15, and the lower end of the front mold one injection oblique top sliding block 3 is not in contact with the lower end of the two-injection lower sliding wear-resistant block 14. The guide inclined block 3101 of the lower end of the front mold two-injection oblique top sliding block 31 slides downward along the two-injection lower sliding wear-resistant block 14. At this time, the lower end of the front mold two-injection oblique top sliding block 31 is not in contact with the one-injection parallel wear-resistant block 15, thereby effectively solving the problem of different direction movements of the front mold one-injection oblique top sliding block 3 and the front mold two-injection oblique top sliding block 31, and without the need of replacing the rear mold 1, the product does not need to be disassembled and reinstalled and positioned, only the front mold 2 needs to be rotated by one hundred and eighty degrees, thereby realizing double-color injection molding processing, and greatly improving the work efficiency.

[0053] Please refer to Figure 4 and Figure 10 The upper end of the rear mold 1 is symmetrically provided with an L-shaped groove 16 at the front and rear ends of the two lower mold cavities. The bottoms of the two adjacent L-shaped grooves 16 are provided with a communication groove 17. The side surface of the upper end of each L-shaped groove 16 is provided with a through groove 18. The upper and lower sides of each communication groove 17 are symmetrically provided with a limiting groove 19.

[0054] The reset mechanism comprises a fixed stop block 5 fixedly connected to the middle position of the communication groove 17. The left and right sides of the fixed stop block 5 are provided with a reset block 51. The reset block 51 and the fixed stop block 5 are fixedly connected with a reset spring 52. The upper and lower sides of the reset block 51 are symmetrically fixedly connected with a limiting block 53. The outer side surface of the mounting block 4 is fixedly connected with an L-shaped block 41. The lower end of the L-shaped block 41 downwardly penetrates the through groove 18 and is inserted into the L-shaped groove 16.

[0055] The reset block 51 is slidably connected to the left and right sides of the communication groove 17. The limiting block 53 is slidably connected to the left and right sides of the limiting groove 19. The L-shaped block 41 is slidably connected to the left and right sides of the L-shaped groove 16. The side surface of the L-shaped block 41 is in abutment with the reset block 51.

[0056] During the process of moving downwardly of the front mold 2 and clamping with the rear mold 1, the front mold 2 drives the front mold one-injection oblique top sliding block 3, the front mold two-injection oblique top sliding block 31 and the guide assembly to move downwardly synchronously. At this time, the front mold one-injection oblique top sliding block 3 and the front mold two-injection oblique top sliding block 31 drive the L-shaped block 41 to move downwardly through the mounting block 4. The lower end of the L-shaped block 41 downwardly penetrates the upper end of the through groove 18 and the L-shaped groove 16 and is inserted into the L-shaped groove 16.

[0057] When the front mold one injection oblique top slide block 3 and the front mold two injection oblique top slide block 31 move downwards, the locking mechanism and the unlocking mechanism are driven to move downwards, at this time, the lower end of the extrusion plate 7 in the unlocking mechanism first contacts the injection parallel wear-resistant block 15, at this time, the front mold one injection oblique top slide block 3 and the front mold two injection oblique top slide block 31 continue to move downwards, and the extrusion plate 7 cannot continue to move downwards, at this time, the extrusion inclined groove 61 at the lower end of the extrusion block 6 slides along the slope at the upper end of the extrusion plate 7, so that the locking plug 62 in the locking mechanism is removed from the positioning hole 25;

[0058] The front mold 2 continues to move downwards, at this time, the lower end of the front mold one injection oblique top slide block 3 abuts against the injection parallel wear-resistant block 15, so that the front mold one injection oblique top slide block 3 cannot continue to move downwards, the guide inclined block 3101 at the lower end of the front mold two injection oblique top slide block 31 abuts against the two-injection lower slide wear-resistant block 14, so that the front mold two injection oblique top slide block 31 cannot continue to move downwards, at this time, the front mold 2 drives a plurality of guide assemblies to slide downwards along the adjacent T-shaped inclined grooves 32, the guide assemblies push the two front mold one injection oblique top slide blocks 3 and the two front mold two injection oblique top slide blocks 31 to move towards each other until they are completely spliced, so that injection molding processing can be performed.

[0059] During the movement of the two front mold one injection oblique top slide blocks 3 and the two front mold two injection oblique top slide blocks 31 towards each other, the mounting blocks 4 thereon are also moved, so that the two adjacent mounting blocks 4 drive the two adjacent L-shaped blocks 41 to move towards each other, at this time, the L-shaped blocks 41 slide along the L-shaped grooves 16, the L-shaped blocks 41 push the reset blocks 51 to slide along the communication grooves 17, the reset blocks 51 drive the limiting blocks 53 to slide along the limiting grooves 19, the reset blocks 51 are guided and limited, and the reset blocks 51 extrude the reset springs 52.

[0060] The upper end of the front mold 2 is connected with a driving mechanism, the driving mechanism can drive the front mold 2 to move up and down and rotate, which are all prior art, so they will not be described in detail.

[0061] Working principle: when the product needs to be processed, at this time, the locking plug 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 downwardly combined with the rear mold 1, the front mold one injection oblique top slide block 3, the front mold two injection oblique top slide block 31, the guide assembly, and the ejection demolding mechanism are synchronously driven to move downwards by the front mold 2, at this time, the front mold one injection oblique top slide block 3 and the front mold two injection oblique top slide block 31 drive the L-shaped block 41 to move downwards through the mounting block 4, the lower end of the L-shaped block 41 is inserted into the L-shaped groove 16 along the upper end of the through groove 18 and the L-shaped groove 16;

[0062] When the front mold one injection oblique top slide block 3 and the front mold two injection oblique top slide block 31 move downwards, the locking mechanism and the unlocking mechanism are driven to move downwards, at this time, the lower end of the extrusion plate 7 in the unlocking mechanism first contacts the injection parallel wear-resistant block 15, at this time, the front mold one injection oblique top slide block 3 and the front mold two injection oblique top slide block 31 continue to move downwards, and the extrusion plate 7 will not continue to move downwards, at this time, the extrusion inclined groove 61 at the lower end of the extrusion block 6 slides along the slope at the upper end of the extrusion plate 7, the extrusion plate 7 pushes the extrusion block 6 to move to the outer end of the contraction groove 35, and the extrusion block 6 drives the locking plug 62 to move out of the positioning hole 25 in the side of the guide inclined plate 24;

[0063] At this time, the lower end of the front mold one injection oblique top slide block 3 abuts against the injection parallel wear-resistant block 15, so that the front mold one injection oblique top slide block 3 cannot continue to move downwards, and the guide inclined block 3101 at the lower end of the front mold two injection oblique top slide block 31 abuts against the two-injection lower slide wear-resistant block 14, so that the front mold two injection oblique top slide block 31 cannot continue to move downwards;

[0064] By continuing to move the front mold 2 downwards, at this time, since the front mold 2 drives a plurality of guide assemblies to slide downwards along the adjacent T-shaped inclined grooves 32, the two front mold one injection oblique top slide blocks 3 and the two front mold two injection oblique top slide blocks 31 are pushed to move close to each other by the guide assemblies, until they are completely spliced, so that injection molding can be performed, and in the moving process of the front mold one injection oblique top slide block 3 and the front mold two injection oblique top slide block 31, the front mold one injection oblique top slide block 3 and the front mold two injection oblique top slide block 31 slide along the inclined rod 3301, and the front mold one injection oblique top slide block 3 and the front mold two injection oblique top slide block 31 extrude the top mold spring 3302.

[0065] In the moving process of the two front mold one injection oblique top slide blocks 3 and the two front mold two injection oblique top slide blocks 31, the mounting blocks 4 thereon are driven 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, the L-shaped block 41 pushes the reset block 51 to slide along the communication groove 17, the reset block 51 drives the limiting block 53 to slide along the limiting groove 19, the reset block 51 is guided and limited, and the reset block 51 extrudes the reset spring 52.

[0066] When the product injection is completed and the mold needs to be opened, the front mold 2 is moved upwards, when the front mold 2 is separated from the rear mold 1, under the action of the elastic force of the top mold spring 3302, the front mold one injection oblique top slide block 3 and the front mold two injection oblique top slide block 31 will not immediately move upwards with the front mold 2, and under the pushing of the elastic force of the top mold spring 3302, the left and right symmetrical two front mold one injection oblique top slide blocks 3 and the left and right symmetrical two front mold two injection oblique top slide blocks 31 slide along the guide assemblies and move away from each other, so that the two front mold one injection oblique top slide blocks 3 and the two front mold two injection oblique top slide blocks 31 are separated from the product, preventing the product from moving synchronously in the subsequent moving process of the two front mold one injection oblique top slide blocks 3 and the two front mold two injection oblique top slide blocks 31, and causing damage to the product;

[0067] At the same time, the two reset blocks 51 are pushed away from each other by the elastic force of the reset spring 52, the reset blocks 51 push the two L-shaped blocks 41 to slide away from each other along the two L-shaped grooves 16, so that the L-shaped blocks 41 move to the position directly below the through grooves 18, at this time, the two front mold one inclined top sliding blocks 3 and the two front mold two inclined top sliding blocks 31 can move upward, and the L-shaped blocks 41 can effectively prevent the two front mold one inclined top sliding blocks 3 and the two front mold two inclined top sliding blocks 31 from moving upward when they are not fully opened.

[0068] Especially when the top mold spring 3302 cannot rebound, the two front mold one inclined top sliding blocks 3 and the two front mold two inclined top sliding blocks 31 cannot be opened in time, and if the reset mechanism is not set, the top mold spring 3302 cannot push the two front mold one inclined top sliding blocks 3 and the two front mold two inclined top sliding blocks 31 to open completely in time, and once the two front mold one inclined top sliding blocks 3 and the two front mold two inclined top sliding blocks 31 move upward, the injection molded product will be damaged.

[0069] When the two front mold one inclined top sliding blocks 3 and the two front mold two inclined top sliding blocks 31 are fully opened, the front mold 2 continues to move upward, the front mold 2 drives the two front mold one inclined top sliding blocks 3, the two front mold two inclined top sliding blocks 31, and the guide assembly to move upward, at this time, the lifting block 71 and the pressing plate 7 remain stationary under the elastic force of the second spring 72, and the movable block 63 is reset under the elastic force of the first spring 64, the movable block 63 drives the pressing block 6 and the locking rod 62 to reset, the end of the locking rod 62 is inserted into the positioning hole 25, the front mold one inclined top sliding block 3 and the front mold two inclined top sliding block 31 are relatively fixed with the guide assembly, and when the front mold 2 continues to move upward, the front mold one inclined top sliding block 3 and the front mold two inclined top sliding block 31 move upward synchronously.

[0070] The guide assembly and the locking mechanism can drive the two front mold one inclined top sliding blocks 3 and the two front mold two inclined top sliding blocks 31 to move upward synchronously, preventing the two front mold one inclined top sliding blocks 3 and the two front mold two inclined top sliding blocks 31 from moving downward and causing misalignment.

[0071] The locking mechanism can make the two front mold one inclined top sliding blocks 3 and the two front mold two inclined top sliding blocks 31 move stably with the front mold 2 and the guide assembly, and the moving direction and position of the two front mold one inclined top sliding blocks 3 and the two front mold two inclined top sliding blocks 31 are symmetrical, preventing the two front mold one inclined top sliding blocks 3 and the two front mold two inclined top sliding blocks 31 from moving synchronously due to resistance between components, and causing damage to the equipment.

[0072] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely exemplary of the principles and application of the present application. Numerous modifications and adaptions can be effected without departing from the spirit and scope of the present application, which is not limited to the exact construction and arrangement described. It is intended, therefore, to cover all modifications and adaptions that fall within the scope of the 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 the upper end of the rear mold (1) is symmetrically provided with a plurality of docking holes (13), and the upper end of the rear mold (1) is mounted with a front mold (2), characterized in that: The lower end of the front mold (2) is recessed upwards to form an upper mold cavity (21). The tops of the two upper mold cavities (21) are penetrated upwards to form a connecting groove (22). A front mold one-shot inclined top slider (3) is symmetrically installed in one of the upper mold cavities (21). A front mold two-shot inclined top slider (31) is symmetrically installed in the other upper mold cavity (21). The lower end of the front mold two-shot inclined top slider (31) is symmetrically protruding downwards to form a guide oblique block (3101). The ejection mechanism is symmetrically mounted on the top slider (3) and the front mold second shot inclined top slider (31), and guide assemblies are symmetrically mounted in the two upper mold cavities (21). The front mold first shot inclined top slider (3) and the front mold second shot inclined top slider (31) are respectively slidably connected to the adjacent guide assemblies. The front mold first shot inclined top slider (3) and the front mold second shot inclined top slider (31) are 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 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 both set as slopes, and the slopes of the connecting vertical plates (23) are fixedly connected to the guide inclined plates (24), and 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-back direction, and the connecting vertical plates (23) and the guide inclined plates (24) are both slidably connected to the 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 installed with locking mechanisms and unlocking mechanisms.

3. The double-color injection mold with a front mold oblique spring block demoulding mechanism according to claim 2, characterized in that: The locking mechanism includes a contraction groove (35) provided on the inner side wall of the mounting groove (34), 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), 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 mounting groove (34), movable blocks (63) are symmetrically fixedly connected to the left and right sides of the extrusion block (6), a first spring piece (64) is fixedly provided 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).

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 bevel groove (32). The end of the locking rod (62) contacts the side of the guide bevel plate (24). The side of the guide bevel plate (24) is provided with a positioning hole (25) that matches the locking rod (62).

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

6. The two-color injection mold with a front mold oblique spring block demoulding mechanism according to claim 3, characterized in that: The unlocking mechanism includes an extrusion plate (7) slidably mounted in a vertical slot (37) up and down, a lifting block (71) symmetrically fixedly connected to the left and right sides of the extrusion plate (7), a second spring piece (72) fixedly mounted on the upper end of the lifting block (71), the upper end of the extrusion plate (7) close to the mounting slot (34) is in a sloped surface, the upper end of the extrusion plate (7) is slidably connected to the extrusion chute (61), and the lower end of the extrusion plate (7) abuts against 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 piece (72) abuts against the upper end of the lifting slot (38).

8. The two-color injection mold with a front mold oblique spring 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). The ejection and demoulding mechanism includes an inclined rod (3301) slidably inserted into 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 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. The 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 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 a limiting groove (19) is provided symmetrically on the upper and lower side surfaces of each connecting groove (17); The reset mechanism comprises a fixed stopper (5) fixedly connected to the middle position of the connecting groove (17), a reset block (51) is provided 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. The 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 connected to the connecting groove (17) in a left-right sliding manner, the limit block (53) is connected to the limit groove (19) in a left-right sliding manner, the L-shaped block (41) is connected to the L-shaped groove (16) in a left-right sliding manner, and the side surface of the L-shaped block (41) abuts against the reset block (51).

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