Front mold pitched roof mold structure

By using the front mold inclined ejector structure and the design of the inclined ejector platform and spring shock absorber, the processing and assembly difficulties of traditional molds when dealing with undercuts and side wall protrusions are solved, achieving efficient demolding and high-quality production, and reducing costs and maintenance difficulties.

CN224028241UActive Publication Date: 2026-03-24HEYUAN SHANDE TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-25
Publication Date
2026-03-24

AI Technical Summary

Technical Problem

Traditional injection molds require the rear mold or side slider to handle undercuts or side wall protrusions on the front mold side, which increases the difficulty of mold processing and assembly, leading to higher production costs. The motion trajectory is unstable, which can easily cause scratches and jamming on the product, affecting the appearance quality and mechanical properties. Furthermore, the complex mechanism increases the difficulty of maintenance and the injection cycle.

Method used

It adopts an independent front mold inclined ejector mechanism, combined with the inclined ejector platform, spring damper and spring sheet design. Through the cooperation of the inclined ejector block and wear-resistant block, it achieves smooth demolding. Through multi-segment guide and arc transition design, it improves motion accuracy and wear resistance, and simplifies mold structure.

Benefits of technology

It simplifies the mold structure, improves demolding efficiency, reduces mold modification and maintenance costs, ensures high-quality and efficient production of products, reduces stress concentration and wear marks, and improves product appearance and mechanical properties.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224028241U_ABST
Patent Text Reader

Abstract

The utility model discloses a front mold inclined top mold structure which comprises a fixed base, an inclined top assembly fixedly installed in the middle of the top end of the fixed base, a front mold arranged at the top end of the fixed base, a rear mold arranged at the top end of the front mold, a top plate arranged at the top end of the rear mold, and two inclined top openings symmetrically formed in the middle of the front mold. The front mold inclined top mold structure is different from a traditional rear mold side sliding block or inclined top, an independent inclined top mechanism is adopted for a front mold side reverse buckle, the rear mold structure is simplified, and the demolding efficiency is improved; through a modularization thought, the angle, the stroke and the material of the inclined top of the front mold can be conveniently and quickly switched or upgraded in different products, and the mold modification and maintenance cost is reduced; multi-section or spherical guide is adopted, and the arc transition design of the inclined top end is matched, so that the inclined top moves stably, the matching degree with the shape of a product is higher, and the problems of wire clamping and stress concentration are solved.
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Description

TECHNICAL FIELD

[0001] The utility model relates to injection mold technical field, concretely is a front mould inclined top mould structure. BACKGROUND

[0002] The injection mold can be adjusted according to the needs of customers and product requirements, realize the highly personalized customization production, provide better product and service experience, the design of injection mold is optimized and adjusted in practice constantly, make product reach higher precision and quality requirement in manufacturing process, satisfy higher quality requirement of customer, in traditional injection mold design, if product has reverse buckle or sidewall protrusion on the front mould side, often need the cooperation of back mould or lateral slide, inclined top mechanism, can smoothly separate product from the mold.

[0003] However, for some products with high construction requirements or appearance requirements, using conventional back mould inclined top or lateral slide may cause the following problems:

[0004] (1) to solve the reverse buckle or sidewall protrusion on the front mould side, need back mould or side slide block cooperation, increase the mold processing and assembly difficulty, promote production cost;

[0005] (2) back mould mechanism or side slide block may exist unstable motion trajectory, cooperation precision is insufficient, when product is formed, demoulding is easy to produce scratch or jam;

[0006] (3) reverse buckle part demoulding is not smooth, easy to leave stress mark, top white or wear mark on product, influence terminal product appearance quality and mechanical property;

[0007] (4) more complex back mould ejection or slide block mechanism needs more components and action debugging, increases maintenance difficulty and can cause injection molding cycle to be long. INVENTION CONTENTS

[0008] The utility model discloses a front mould inclined top mould structure to solve the reverse buckle or sidewall protrusion on the front mould side, need back mould or side slide block cooperation, increase the mold processing and assembly difficulty, promote production cost;Back mould mechanism or side slide block may exist unstable motion trajectory, cooperation precision is insufficient, when product is formed, demoulding is easy to produce scratch or jam;Reverse buckle part demoulding is not smooth, easy to leave stress mark, top white or wear mark on product, influence terminal product appearance quality and mechanical property;More complex back mould ejection or slide block mechanism needs more components and action debugging, increases maintenance difficulty and can cause injection molding cycle to be long.

[0009] In order to achieve the above object, the utility model provides the following technical scheme: a front mould inclined top mould structure, fixed base is fixedly installed with inclined top subassembly in the middle part of the top end, the top end of fixed base is equipped with front mould, the top end of front mould is equipped with rear mould, the top end of rear mould is equipped with top plate, the middle part of front mould is equipped with two symmetrical inclined top mouths, the inclined top subassembly includes inclined top platform and two spring shock absorbers, the both sides of the bottom end of inclined top platform are fixedly connected with the top end of two spring shock absorbers, the surface of inclined top platform is fixedly installed with two symmetrical length bars.

[0010] Preferably, the both sides of the top end of the inclined top platform are provided with movable grooves, the interiors of the two movable grooves are slidably connected with movable blocks, the sides, away from each other, of the two movable blocks are fixedly installed with return springs, the ends, away from the movable blocks, of the two return springs are fixedly connected with the sides of the inner walls of the two movable grooves, the top ends of the two movable blocks are installed with angle rods, the top ends of the two angle rods are installed with inclined top blocks through the inclined top mouths, the top ends of the two inclined top blocks are fixedly installed with wear-resistant blocks, the bottom ends of the two spring shock absorbers are fixedly connected with the fixed base, in the process of injection molding, the movable blocks slide along the movable grooves, and the movable blocks extrude the return springs from one side, the return springs elastically deform to buffer the extrusion force, the movable blocks slide to make the angle rods angularly deflect, the angle rods slide relative to the inclined top mouths, and the angle rods push the inclined top blocks from the bottom, and the inclined top blocks and the wear-resistant blocks push out the injection-molded products.

[0011] Preferably, the middle part of the top end of the inclined top platform is fixedly installed with two symmetrical spring sheets, the middle parts of the two angle rods are fixedly installed with supporting springs, the ends, away from the angle rods, of the two supporting springs are fixedly connected with the sides, away from each other, of the two spring sheets, the top ends of the two spring sheets are fixedly connected with the sides, opposite to the front mould, the angle rods pull the supporting springs from one side in the process of angular deflection, the supporting springs are elastic, and the supporting springs elastically deform to buffer the pulling force.

[0012] Preferably, the top ends of the two length bars are fixedly connected with the both sides of the bottom end of the top plate, the both sides of the bottom end of the rear mould are slidably connected with the middle parts of the two length bars.

[0013] Preferably, the middle part of the top end of the top plate is fixedly provided with a lifting cylinder, the movable end of the lifting cylinder is fixedly connected with the middle part of the top end of the rear mold, the both sides of the top end of the rear mold are fixedly provided with sliding frames which are slidably connected with the top plate, the surfaces of the two sliding frames are fixedly provided with connecting springs, the bottom ends of the two connecting springs are fixedly connected with the opposite sides of the rear mold, the lifting cylinder performs telescopic movement, the rear mold drives the sliding frames to slide relative to the top plate, the connecting springs are pulled during the sliding of the sliding frames, the connecting springs are elastic, and the elastic deformation of the connecting springs buffers the pulling force.

[0014] Preferably, the middle part of the bottom end of the rear mold is provided with a forming groove, and the surface of the rear mold is fixedly communicated with a glue injection pipeline extending to the outside; materials are injected into the forming groove through the glue injection pipeline, and the rear mold and the front mold cooperate to complete injection molding.

[0015] Preferably, the both sides of the top end of the fixed base are fixedly provided with height plates, and the top ends of the two height plates are fixedly connected with the both sides of the bottom end of the front mold; the height plates stably support the bottom of the front mold.

[0016] Compared with the prior art, the utility model has the advantages that:

[0017] 1. Different from the traditional rear mold side sliding block or inclined top, an independent inclined top mechanism is adopted for the front mold side inverted buckle, the rear mold structure is simplified, and the demolding efficiency is improved;

[0018] 2. Through the modularization idea, the angle, stroke and material of the front mold inclined top can be quickly switched or upgraded in different products, and the mold improvement and maintenance cost is reduced;

[0019] 3. Multi-section or spherical surface guiding is adopted, and the arc transition design of the inclined top end is matched, so that the inclined top movement is stable, the matching degree with the product shape is higher, and the wire clamping and stress concentration problems are reduced;

[0020] 4. The inclined top and the guide rail are subjected to surface strengthening treatment, the wear resistance and precision are improved, and the service life and quality stability under high-frequency demolding are ensured;

[0021] 5. The reinforcing ribs or embedded parts are added to the front mold body, so that the front mold can maintain sufficient rigidity and guiding precision after the embedded inclined top assembly. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a side view of the utility model;

[0023] Figure 2 It is a local schematic view of the utility model;

[0024] Figure 3 It is a sectional view of the inclined top assembly of the utility model;

[0025] Figure 4 The utility model discloses the connection drawing of roof and rear mould.

[0026] In the drawing: 1, fixed base, 2, inclined roof assembly, 201, inclined roof platform, 202, spring shock absorber, 203, movable slot, 204, movable block, 205, reset spring, 206, angle lever, 207, inclined roof block, 208, wear-resistant block, 209, support spring, 210, elastic sheet, 3, height plate, 4, front mould, 5, length lever, 6, rear mould, 7, roof, 8, forming groove, 9, glue injection pipeline, 10, inclined roof mouth, 11, sliding frame, 12, connecting spring, 13, lifting cylinder. DETAILED DESCRIPTION

[0027] The technical scheme in the utility model embodiment will be clearly and completely described below with reference to the drawings in the utility model embodiments.

[0028] Please refer to Figures 1-4 The utility model provides a front mould inclined roof mould structure, fixed base 1 is fixedly installed with inclined roof assembly 2 in the middle of the top end, and the top end of fixed base 1 is equipped with front mould 4, and the top end of front mould 4 is equipped with rear mould 6, and the top end of rear mould 6 is equipped with roof 7, and the middle part of front mould 4 is equipped with two symmetrical inclined roof mouths 10, and inclined roof assembly 2 includes inclined roof platform 201 and two spring shock absorbers 202, and the bottom end of inclined roof platform 201 is fixedly connected with the top end of two spring shock absorbers 202 respectively on both sides, and the surface of inclined roof platform 201 is fixedly installed with two symmetrical length levers 5.

[0029] The top end of inclined roof platform 201 is equipped with movable slot 203 on both sides, and the inside of two movable slots 203 is slidably connected with movable block 204, and the side, away from each other, of two movable blocks 204 is fixedly installed with reset spring 205, and the end, away from movable block 204, of two reset springs 205 is fixedly connected with the side of the inner wall of two movable slots 203 respectively, and the top end of two movable blocks 204 is installed with angle lever 206, and the top end of two angle levers 206 is installed with inclined roof block 207 through inclined roof mouth 10, and the top end of two inclined roof blocks 207 is fixedly installed with wear-resistant block 208, and the bottom end of two spring shock absorbers 202 is fixedly connected with fixed base 1, and in the process of injection moulding, movable block 204 slides along movable slot 203, and movable block 204 extrudes reset spring 205 from one side, and reset spring 205 elastically deforms to buffer extrusion force, and movable block 204 makes angle lever 206 angularly deflect in the process of sliding, and angle lever 206 slides relative to inclined roof mouth 10, and angle lever 206 pushes inclined roof block 207 from the bottom, and inclined roof block 207 and wear-resistant block 208 push the product of injection moulding out.

[0030] The middle part of the top end of the inclined roof 201 is fixedly installed with two symmetrically arranged elastic sheets 210, the middle part of each of the two angle rods 206 is fixedly installed with a supporting spring 209, the end of each of the two supporting springs 209 away from the angle rod 206 is fixedly connected with the side away from the other elastic sheet 210, the top end of each of the two elastic sheets 210 is fixedly connected with the side opposite to the front mold 4, and the supporting spring 209 is pulled from one side in the process of deflection of the angle rod 206. The supporting spring 209 is elastic, and the elastic deformation of the supporting spring 209 buffers the pulling force.

[0031] The top end of each of the two length rods 5 is fixedly connected with the side of the bottom end of the top plate 7, and the middle part of each of the two length rods 5 is slidingly connected with the side of the bottom end of the rear mold 6.

[0032] The middle part of the top end of the top plate 7 is fixedly installed with a lifting cylinder 13, the movable end of the lifting cylinder 13 is fixedly connected with the middle part of the top end of the rear mold 6, the two sides of the top end of the rear mold 6 are fixedly installed with sliding frames 11 slidingly connected with the top plate 7, the surface of each of the two sliding frames 11 is fixedly installed with a connecting spring 12, the bottom end of each of the two connecting springs 12 is fixedly connected with the side opposite to the rear mold 6, the lifting cylinder 13 performs extension and retraction movement, the lifting cylinder 13 pushes the rear mold 6 from the top, the rear mold 6 drives the sliding frame 11 to slide relative to the top plate 7, the connecting spring 12 is pulled in the process of sliding of the sliding frame 11, the connecting spring 12 is elastic, and the elastic deformation of the connecting spring 12 buffers the pulling force.

[0033] The middle part of the bottom end of the rear mold 6 is provided with a forming groove 8, and the surface of the rear mold 6 is fixedly connected with a glue injection pipeline 9 extending to the outside. The material is injected into the forming groove 8 through the glue injection pipeline 9, and the rear mold 6 and the front mold 4 are matched to complete injection molding.

[0034] The top end of each of the two height plates 3 fixedly installed on the fixed base 1 is fixedly connected with the side of the bottom end of the front mold 4, and the height plate 3 stably supports the bottom of the front mold 4.

[0035] The embodiment of the application in use: the lifting cylinder 13 telescopic movement, the lifting cylinder 13 from the top push rear mold 6, rear mold 6 driven slide 11 relative to the top plate 7 sliding, slide 11 sliding process to pull the connecting spring 12, the connecting spring 12 has elasticity, the elastic deformation of the connecting spring 12 to pull the buffer, the material through the injection pipe 9 injection into the forming groove 8, rear mold 6 and front mold 4 cooperation to complete the injection molding, the process of injection, the movable block 204 along the activity groove 203 sliding, and the movable block 204 from one side extrusion reset spring 205, the elastic deformation of the reset spring 205 to extrusion buffer, the movable block 204 sliding process makes the angle bar 206 angle deflection, angle bar 206 relative to the oblique top 10 sliding, and the angle bar 206 from the bottom push oblique top block 207, oblique top block 207 and wear-resistant block 208 to the injection molding product is oblique top push out, the angle bar 206 deflection from one side pull the support spring 209, the support spring 209 has elasticity, the elastic deformation of the support spring 209 to pull the buffer.

[0036] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A front-die inclined knockout die structure comprising a fixed base (1), characterized in that: The middle part of the top end of the fixed base (1) is fixedly installed with an inclined top assembly (2), the top end of the fixed base (1) is provided with a front mold (4), the top end of the front mold (4) is provided with a rear mold (6), the top end of the rear mold (6) is provided with a top plate (7), the middle part of the front mold (4) is provided with two symmetrical inclined top openings (10), the inclined top assembly (2) comprises an inclined top table (201) and two spring shock absorbers (202), the bottom end of the inclined top table (201) is fixedly connected with the top end of the two spring shock absorbers (202) on the two sides, respectively, and the surface of the inclined top table (201) is fixedly installed with two symmetrical length rods (5).

2. The front-die ramped-die structure of claim 1, wherein: The top end of the inclined top table (201) is provided with a movable groove (203) on the two sides, the inside of the two movable grooves (203) is slidably connected with a movable block (204), the side, away from the movable block (204), of the two movable blocks (204) is fixedly installed with a reset spring (205), one end, away from the movable block (204), of the two reset springs (205) is fixedly connected with the side of the inner wall of the two movable grooves (203), respectively, the top end of the two movable blocks (204) is installed with an angle rod (206), the top end of the two angle rods (206) is installed with an inclined top block (207) through the inclined top opening (10), the top end of the two inclined top blocks (207) is fixedly installed with a wear-resistant block (208), and the bottom end of the two spring shock absorbers (202) is fixedly connected with the fixed base (1).

3. The front die ramped knockout die structure of claim 2, wherein: The middle part of the top end of the inclined top table (201) is fixedly installed with two symmetrical spring sheets (210), the middle part of the two angle rods (206) is fixedly installed with a supporting spring (209), one end, away from the angle rod (206), of the two supporting springs (209) is fixedly connected with the side, away from the two spring sheets (210), respectively, and the top end of the two spring sheets (210) is fixedly connected with the side, opposite to the front mold (4).

4. The front-die ramped-die structure of claim 1, wherein: The top end of the two length rods (5) is fixedly connected with the two sides of the bottom end of the top plate (7), respectively, the bottom end of the rear mold (6) is slidably connected with the middle part of the two length rods (5) on the two sides, respectively.

5. The front die ramped knockout die structure of claim 1, wherein: The middle part of the top end of the top plate (7) is fixedly installed with a lifting air cylinder (13), the movable end of the lifting air cylinder (13) is fixedly connected with the middle part of the top end of the rear mold (6), the two sides of the top end of the rear mold (6) are fixedly installed with a sliding frame (11) slidably connected with the top plate (7), the surface of the two sliding frames (11) is fixedly installed with a connecting spring (12), and the bottom end of the two connecting springs (12) is fixedly connected with the side, opposite to the rear mold (6).

6. The front die ramped knockout die structure of claim 1, wherein: The middle part of the bottom end of the rear mold (6) is provided with a forming groove (8), and the surface of the rear mold (6) is fixedly communicated with a glue injection pipeline (9) extending to the outside.

7. The front-die ramped-mold structure of claim 1, wherein: The top end of the fixed base (1) is fixedly installed with a height plate (3) on the two sides, respectively, and the top end of the two height plates (3) is fixedly connected with the two sides of the bottom end of the front mold (4), respectively.