CN220864654U

CN220864654U - Injection mold with two-way slider demolding structure

Info

Publication number: CN220864654U
Application number: CN202322629696.1U
Authority: CN
Inventors: 王尚杰; 郭发猛
Original assignee: Suzhou Zhongyue Baiyi Photoelectric Research And Development Co ltd
Current assignee: Suzhou Zhongyue Baiyi Photoelectric Research And Development Co ltd
Priority date: 2023-09-27
Filing date: 2023-09-27
Publication date: 2024-04-30
Anticipated expiration: 2033-09-27

Abstract

The utility model discloses an injection mold with a two-way sliding block demolding structure, which comprises: a front template and a rear template, wherein the front template is provided with a front mould core, and the rear template is provided with a rear mould core; a first sliding block is arranged on the rear template in a sliding manner, and is provided with a sliding block seat and a forming end, and the forming end extends to the rear mould core and is used for forming a first back-off position on a product; a sliding block insert is fixed on the sliding block seat, a second sliding block is arranged on the sliding block insert in a sliding manner, and one end of the second sliding block extends to the rear mold core and is used for forming a second back-off position on the product; the front template is provided with an inclined guide pillar, and the inclined guide pillar is used for driving the first sliding block to move along the direction perpendicular to the die opening direction when the die is opened, so that the forming end is withdrawn from the first back-off position on the product, and the second sliding block can be driven to move in an inclined manner through the sliding block insert so as to withdraw from the second back-off position on the product. The utility model can realize bidirectional demolding of the sliding block, not only simplifies the structural design of the mold and reduces the cost, but also does not occupy too much space.

Description

Injection mold with two-way slider demolding structure

Technical Field

The utility model relates to the technical field of injection molds, in particular to an injection mold with a bidirectional sliding block demolding structure.

Background

The injection mold is widely applied to industrial production and is mainly used for manufacturing various plastic products. As the demand for plastic products increases, the design of injection molds becomes more and more important. The injection mold not only needs to design matched mold cores according to the size and shape of the product, but also needs to reasonably design a mold stripping structure for the product with the back-off.

As shown in fig. 1 of the drawings, a first back-off position 101, i.e. a groove, and a second back-off position 102, i.e. an inclined hole, are arranged adjacent to the first back-off position 101 on the product 10, and the demolding directions of the first back-off position 101 and the second back-off position 102 are different. As shown in fig. 2, for the product with double back-off positions and different demolding directions, two sliders are provided in the conventional technology, the first slider 20 is driven by the oblique guide post to withdraw from the first back-off position 101, and the second slider 30 is driven by the hydraulic cylinder 40 alone to withdraw from the second back-off position 102. Although the normal demolding requirement of products with reverse buckling positions in different directions can be met, the two sliding blocks are independently driven, used accessories are relatively large, the structure is relatively complex, particularly the sliding block II 30 needs to be driven by the oil hydraulic cylinder 40, the cost of the mold is increased, the occupied space is large, the whole size of the injection mold is large, and the oil hydraulic cylinder is difficult to set particularly under the condition that the space position is limited; in addition, the time sequence of the opening and closing die driving of the first slide block 20 and the second slide block 30 is coordinated, so that the design difficulty is high. Accordingly, there is a need for improvements in the art that overcome the shortcomings of the prior art.

Disclosure of Invention

In order to solve the technical problems, the utility model provides the injection mold with the bidirectional sliding block demolding structure, wherein the first sliding block and the second sliding block are designed to be simultaneously driven by the inclined guide columns to realize demolding in different directions, so that the structural design of the mold is simplified, the cost is reduced, the occupied space is reduced, and the mass production efficiency of the mold is remarkably improved.

The technical scheme adopted by the utility model for solving the technical problems is as follows: an injection mold with a bi-directional slider ejector structure, comprising: the hot runner mold comprises a top plate, a bottom plate, a hot runner plate, a front mold plate, a rear mold plate and an ejection mechanism, wherein the hot runner plate, the front mold plate, the rear mold plate and the ejection mechanism are sequentially arranged from the top plate to the bottom plate; the back mold plate is provided with a first sliding block in a sliding manner, the first sliding block is provided with a sliding block seat and a forming end horizontally extending from one end of the sliding block seat, and the forming end extends to the back mold core and is used for forming a first back-off position on a product; a sliding block insert positioned below the forming end is fixed on the sliding block seat, a second sliding block is slidably arranged on the sliding block insert, and one end of the second sliding block extends onto the rear die core and is used for forming a second back-off position on a product; the front template is provided with an inclined guide pillar, the inclined guide pillar is used for driving the first sliding block to move along the direction perpendicular to the die opening direction when the die is opened, so that the forming end exits from a first back-off position on a product, and the second sliding block can be driven by the sliding block insert to move obliquely so as to exit from a second back-off position on the product.

As a further improvement of the utility model, one end of the sliding block insert, which is far away from the sliding block seat, is provided with a downward inclined sliding groove, the inclined sliding groove is a T-shaped sliding groove or a dovetail sliding groove, the other end of the second sliding block is provided with an inclined sliding table matched with the inclined sliding groove, and the inclined sliding table is in sliding fit with the inclined sliding groove.

As a further improvement of the utility model, a guide fixing block is fixedly arranged on the rear die core, a first guide inclined hole is arranged on the guide fixing block, the second sliding block is slidably matched in the first guide inclined hole, and the guide fixing block is used for limiting the second sliding block to only move in the first guide inclined hole along the axial direction of the first guide inclined hole.

As a further improvement of the utility model, a plurality of springs are arranged between the sliding block seat and the rear die core, and the springs are distributed on two sides of the sliding block insert.

As a further improvement of the utility model, the inclined guide post is fixed on the front template through a fixed seat, an inclined plane is arranged on the fixed seat, and a wear-resisting plate with the same inclination as the inclined plane is fixedly arranged on the sliding block seat; when the die is assembled, the inclined guide post is inserted into the second guide inclined hole of the slide block seat, and the inclined surface is pressed and attached to the wear-resisting plate.

The beneficial effects of the utility model are as follows: the utility model provides an injection mold with a two-way sliding block demolding structure, which is characterized in that a sliding block insert is fixed on a first sliding block, a second sliding block is connected with the sliding block insert in an inclined sliding way, the first sliding block is driven to move along the direction perpendicular to a mold opening direction by using an inclined guide pillar on a front template so as to withdraw a first back-off position on a product, and the second sliding block can be driven to move obliquely downwards by the sliding block insert under the limit of a guide fixing block so as to withdraw a second back-off position on the product, so that the two-way sliding block demolding is realized, the product can be demolded normally, the structural design of the mold is simplified, the cost is reduced, too much occupied space is avoided, and the mass production efficiency of the mold is remarkably improved.

Drawings

FIG. 1 is a schematic view of a partial structure of a product;

FIG. 2 is a schematic diagram of a prior art ejector structure;

FIG. 3 is a perspective view of an injection mold with a two-way slide ejector structure of the present utility model;

FIG. 4 is a perspective view of an injection mold with a two-way slide ejector structure of the present utility model in an open state;

FIG. 5 is a perspective view of a two-way slide ejector structure in an injection mold of the present utility model;

FIG. 6 is a cross-sectional view of a two-way slide ejector structure in an injection mold of the present utility model;

Fig. 7 is a partially exploded view of the bi-directional slider ejector structure of the injection mold of the present utility model with the guide fixing block removed.

The following description is made with reference to the accompanying drawings:

1. A top plate; 2. a bottom plate; 3. a hot runner plate; 4. a front template; 5. a rear template; 6. an ejection mechanism; 7. a wear plate; 8. a rear mold core; 9. a first slider; 901. a slider seat; 902. forming an end; 10. a product; 101. a first back-off position; 102. a second back-off position; 11. a slider insert; 1101. an inclined chute; 12. a second slider; 1201. an inclined sliding table; 13. oblique guide posts; 14. a guide fixing block; 15. a spring; 16. a fixing seat; 1601. an inclined plane; 20. a first sliding block; 30. a second slide block; 40. and (5) an oil cylinder.

Detailed Description

The preferred embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.

Referring to fig. 1, 3 to 7, the present utility model provides an injection mold with a bidirectional slide block demolding structure, comprising: the hot runner plate 3, the front template 4, the rear template 5 and the ejection mechanism 6 which are sequentially arranged from the top plate 1 to the bottom plate 2 are arranged on the top plate 1, the bottom plate 2, the front mold core (not shown in the figure) is arranged at the bottom of the front template 4, the rear mold core 8 is arranged at the top of the rear template 5, the front mold core and the rear mold core 8 are matched to form a cavity for molding a product 10, and the ejection mechanism 6 is used for ejecting the molded product 10. Wherein, the ejection mechanism 6 adopts the form of adding ejector pins by the conventional ejector plate.

Further, a bidirectional sliding block demolding structure is arranged between the front template 4 and the rear template 5, and comprises a first sliding block 9, a sliding block insert 11, a second sliding block 12, an inclined guide post 13 and a guide fixing block 14.

It will be appreciated that the location and number of the bi-directional slider ejector structures may be configured accordingly as desired for the product 10, as will be described in greater detail below.

Referring to fig. 4 to 6, the first slider 9 is slidably mounted on the rear mold plate 5 near the edge, and the first slider 9 is provided with a slider seat 901 and a molding end 902 extending horizontally from one end of the slider seat 901 toward the rear mold core 8. Two sides of the slide block seat 901 are provided with bosses, two pressing strips are fixed on the rear template 5 and respectively pressed on the two bosses of the slide block seat 901 to limit the slide block seat 901, so that the slide block seat 901 can only slide along the direction perpendicular to the opening and closing die. The molding end 902 of the first slider 9 extends onto the rear mold core 8 for molding the first back-off 101 on the product 10.

Further, the slider insert 11 is fixedly mounted at an end of the slider seat 901 facing the rear mold insert 8, and the slider insert 11 is located below the molding end 902. The second slider 12 is slidably mounted on the slider insert 11, and the upper end of the second slider 12 extends onto the rear mold core 8 for forming a second back-off 102 on the product 10.

Referring to fig. 7, the end of the slider insert 11 away from the first slider 9 is provided with a downward inclined chute 1101, wherein the inclined chute 1101 may be a T-shaped chute or a dovetail chute; the lower end of the second slide block 12 is provided with an inclined sliding table 1201 which is matched with the inclined sliding groove 1101, and the inclined sliding table 1201 is in sliding fit in the inclined sliding groove 1101.

Referring to fig. 5 and 6, a guide fixing block 14 is located between the molding end 902 and the slider insert 11, and the guide fixing block 14 is fixed to the rear mold core 8 by bolts. The guide fixing block 14 is provided with a first guide inclined hole matched with the second slide block 12, and the second slide block 12 is slidingly matched in the first guide inclined hole. The second slider 12 is allowed to move only in the first guide inclined hole in the axial direction thereof under the restriction of the guide fixing block 14.

Furthermore, the inclined guide post 13 is fixedly installed at the bottom of the front template 4 through a fixing seat 16, wherein an inclined surface 1601 is arranged on the fixing seat 16; the slide block 901 is provided with a second guiding inclined hole matched with the inclined guide post 13, and the slide block 901 is fixedly provided with a wear-resisting plate 7 with the same inclination as the inclined plane 1601. In the mold closing state, the inclined guide post 13 is inserted into the second guide inclined hole of the slide block seat 901, and the inclined surface 1601 is pressed against the wear-resisting plate 7. According to the utility model, the inclined guide post 13 can be fixed through the fixing seat 16, the shovel base can be used, the stability is improved, and the structure is simplified.

During the mold opening process, in the process that the front mold plate 4 is opened relative to the rear mold plate 5, the first sliding block 9 is driven by the inclined guide post 13 to move outwards along the direction perpendicular to the mold opening direction, so that the molding end 902 is withdrawn from the first back-off position 101 on the product 10; meanwhile, the first slider 9 drives the slider insert 11 to synchronously move outwards, and under the cooperation of the inclined sliding groove 1101 and the inclined sliding table 1201 and the limit of the guiding fixed block 14, the slider insert 11 drives the second slider 12 to move obliquely downwards along the first guiding inclined hole of the guiding fixed block 14, so that the second back-off position 102 on the product 10 is withdrawn.

Therefore, according to the utility model, the first slider 9 is driven to move along the direction perpendicular to the mold opening direction by fixing the slider insert 11 on the first slider 9 and connecting the second slider 12 with the slider insert 11 in an inclined sliding manner, the first slider 9 is driven to withdraw from the first back-off position 101 on the product 10 by using the inclined guide pillar 13 on the front template 4, and the second slider 12 can be driven to move downwards in an inclined manner to withdraw from the second back-off position 102 on the product 10 by the slider insert 11 under the limit of the guide fixing block 14, so that the bidirectional demolding of the slider is realized, the product can be demolded normally, the structural design of the mold is simplified, the cost is reduced, excessive occupied space is avoided, and the mass production efficiency of the mold is remarkably improved.

It should be noted that, in the present utility model, two springs 15 are installed between the slide base 901 and the rear mold core 8, and specifically, the two springs 15 are distributed on two sides of the slide insert 11. In the mold closing state, the spring 15 is compressed and stores energy; in the die sinking process, the first slider 9 not only receives the effort of oblique guide pillar 13, still receives the elasticity that spring 15 applyed simultaneously, and first slider 9 can steadily outwards slide under this elasticity, is showing the stability that improves first slider 9 slip.

In the above description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The foregoing description is only of a preferred embodiment of the utility model, which can be practiced in many other ways than as described herein, so that the utility model is not limited to the specific implementations disclosed above. While the foregoing disclosure has been described with reference to certain embodiments, it will be understood by those skilled in the art that various changes and modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the utility model. Any simple modification, equivalent variation and modification of the above embodiments according to the technical substance of the present utility model without departing from the technical solution of the present utility model still falls within the scope of the technical solution of the present utility model.

Claims

1. The injection mold with the bidirectional sliding block demolding structure comprises a top plate (1), a bottom plate (2) and a hot runner plate (3), a front mold plate (4), a rear mold plate (5) and an ejection mechanism (6) which are sequentially arranged from the top plate (1) to the bottom plate (2), wherein a front mold core is arranged on the front mold plate (4), a rear mold core (8) is arranged on the rear mold plate (5), the front mold core and the rear mold core (8) are matched to form a cavity for molding a product (10), and the ejection mechanism (6) is used for ejecting the molded product (10); the method is characterized in that: a first sliding block (9) is slidably arranged on the rear mold plate (5), the first sliding block (9) is provided with a sliding block seat (901) and a forming end (902) horizontally extending from one end of the sliding block seat (901), and the forming end (902) extends onto the rear mold core (8) and is used for forming a first back-off position (101) on a product (10); a sliding block insert (11) positioned below the forming end (902) is fixed on the sliding block seat (901), a second sliding block (12) is slidably arranged on the sliding block insert (11), and one end of the second sliding block (12) extends onto the rear die core (8) and is used for forming a second back-off position (102) on the product (10); install oblique guide pillar (13) on front bezel (4), oblique guide pillar (13) are used for driving when the die sinking first slider (9) are along perpendicular to die sinking direction motion, so that shaping end (902) withdraw from first back-off position (101) on product (10), and can pass through slider mold insert (11) drive second slider (12) slant motion is with second back-off position (102) on withdrawing from product (10).

2. The injection mold with bi-directional slider ejector structure of claim 1 wherein: one end of the sliding block insert (11) far away from the sliding block seat (901) is provided with a downward inclined sliding groove (1101), the inclined sliding groove (1101) is a T-shaped sliding groove or a dovetail sliding groove, the other end of the second sliding block (12) is provided with an inclined sliding table (1201) matched with the inclined sliding groove (1101), and the inclined sliding table (1201) is in sliding fit with the inclined sliding groove (1101).

3. The injection mold with bi-directional slider ejector structure of claim 1 wherein: the rear die core (8) is fixedly provided with a guide fixing block (14), a first guide inclined hole is formed in the guide fixing block (14), the second sliding block (12) is slidably matched in the first guide inclined hole, and the guide fixing block (14) is used for limiting the second sliding block (12) to move only in the first guide inclined hole along the axial direction of the first guide inclined hole.

4. The injection mold with bi-directional slider ejector structure of claim 1 wherein: a plurality of springs (15) are arranged between the sliding block seat (901) and the rear die core (8), and the springs (15) are distributed on two sides of the sliding block insert (11).

5. The injection mold with bi-directional slider ejector structure of claim 1 wherein: the inclined guide post (13) is fixed on the front template (4) through a fixed seat (16), an inclined surface (1601) is arranged on the fixed seat (16), and a wear-resisting plate (7) with the same inclination as the inclined surface (1601) is fixedly arranged on the sliding block seat (901); when the die is assembled, the inclined guide post (13) is inserted into the second guide inclined hole of the sliding block seat (901), and the inclined surface (1601) is pressed and attached to the wear-resisting plate (7).