CN223030286U - Composite taper pin demoulding structure - Google Patents

Abstract

The utility model discloses a composite inclined pin demoulding structure which comprises a lower die core, a lower die plate, an upper die core, a top plate, a forming assembly, a first inclined top and a second inclined top, wherein the lower die core and the lower die plate are connected with each other, the upper die plate and the upper die core are closed with the lower die core and form a product cavity, the top plate is elastically arranged at the bottom of the lower die plate, the forming assembly is arranged in the cavity in a sliding manner and comprises a first connecting block and a second connecting block which are fixed on the top plate, the first inclined top and the second inclined top are obliquely penetrated in the lower die core, the first inclined top and the second inclined top are mutually jointed in a closed state and together define a forming surface which is formed by encircling, the first inclined top is inclined to the second inclined top in the horizontal direction, and the inclination of the first inclined top is larger than that of the second inclined top.

Description

Composite taper pin demoulding structure

Technical Field

The utility model relates to the technical field of die equipment, in particular to a composite taper pin demoulding structure.

Background

At present, in the mould manufacture of the existing design, the inverted buckle characteristic of the product is usually set up to the inclined roof, a forming part is arranged at one end of the inclined roof located in the cavity, and the inclined roof is driven to move in the horizontal direction through the die opening action of the upper template, so that the demoulding problem of the inverted buckle part of the product is solved, the product is simultaneously provided with the enclosed concave seat characteristic and the inverted buckle characteristic, for example, a concave cavity on a shell product is provided with surrounding ribs at the periphery, and the concave cavity is provided with a strip inverted buckle characteristic.

Disclosure of utility model

Aiming at the defects existing in the prior art, the utility model aims to provide a composite taper pin demoulding structure.

The technical aim of the utility model is achieved by the following technical scheme that the composite inclined pin demoulding structure comprises a lower die core and a lower die plate which are connected with each other, an upper die plate and an upper die core which are closed with the lower die core and form a product cavity, a top plate which is elastically arranged at the bottom of the lower die plate, and a forming assembly which is arranged in the cavity in a sliding way, wherein the forming assembly comprises a first connecting block and a second connecting block which are fixed on the top plate, and a first inclined top and a second inclined top which are obliquely arranged in the lower die core in a penetrating way, the first inclined top and the second inclined top are mutually jointed in a closed state and together define a forming surface which is formed by surrounding, the first inclined top is inclined to the second inclined top in the horizontal direction, and the inclination of the first inclined top is larger than that of the second inclined top.

Further, the first inclined top and the second inclined top are in lap joint through inclined planes.

Further, the first inclined top and the second inclined top together define a back-off molded surface, one side of the first inclined top defines a first molded surface, the other side of the second inclined top defines a second molded surface, and the back-off molded surface, the first molded surface and the second molded surface are mutually enclosed and combined to form a molding surface.

Further, in the die opening state, the distance between the first inclined top and the back-off molded surface is larger than the distance between the second inclined top and the back-off molded surface.

Further, the first inclined top slides obliquely along with the die opening action relative to the second inclined top, and the first inclined top is far away from the inverted buckle molded surface and the first molded surface, and a shrinkage gap is formed between the first inclined top and the first molded surface at intervals.

Further, the molding assembly comprises a rear molding block arranged on the lower die core, wherein the rear molding block defines a third molding surface at the rear sides of the first inclined top and the second inclined top, and defines a first molding surface together with the first inclined top and defines a second molding surface together with the second inclined top;

The front side of the rear forming block is provided with a first chute matched with the first inclined top and the second inclined top.

Further, the forming assembly further comprises a front forming block arranged on the lower die core, a second chute matched with the first inclined top and the second inclined top is arranged on the front forming block, and the first chute and the second chute are oppositely arranged.

Further, a first sliding groove is formed in the first connecting block, a first pin shaft arranged in the first sliding groove is arranged at the upper end of the first inclined top, a second sliding groove is formed in the second connecting block, a second pin shaft arranged in the second sliding groove is arranged at the upper end of the second inclined top, and the first sliding groove and the first inclined top are arranged in the same direction.

Further, the first pitched roof has a pitch of 13 ° and the second pitched roof has a pitch of 11 °.

Further, the first pitched roof is inclined toward the second pitched roof by 2 °.

Compared with the prior art, the utility model has the following advantages and beneficial effects:

According to the utility model, the first inclined roof and the second inclined roof which are adjacent are arranged on the cavity wall parts of the three sides of the product, and meanwhile, the back-off part of the product is formed on the splicing surface of the first inclined roof and the second inclined roof, and the first inclined roof is inclined to the second inclined roof and the inclination of the first inclined roof is larger than that of the second inclined roof, so that the injection molding press can jack the top plate in the mold opening process, the first inclined roof and the second inclined roof are driven to obliquely jack through the first connecting block and the second connecting block, the first inclined roof can slide relative to the second inclined roof and is further separated from the back-off part and the cavity wall part relative to the second inclined roof, so that the adhesion between the molding assembly and the cavity wall part of the product in the same position is avoided during demolding, the demolding fluency of the back-off part and the cavity wall part of the product is realized, and the molding quality of the product is free from mutual interference between the first inclined roof and the second inclined roof.

Drawings

FIG. 1 is a schematic view of the overall structure of the present utility model in a closed state;

FIG. 2 is a schematic diagram of the upper mold plate, molding assembly and upper mold insert of the present utility model;

FIG. 3 is a schematic view of the structure of the product, the first pitched roof and the second pitched roof of the present utility model in a closed state;

FIG. 4 is a schematic view of the structure of the product, the first pitched roof and the second pitched roof in the open state;

FIG. 5 is a cross-sectional view of a first angled roof of the present utility model;

FIG. 6 is a schematic view of the structure of the first and second pitched roof of the present utility model on a product;

FIG. 7 is a schematic view of the first and second pitched roof of the present utility model in a closed position;

FIG. 8 is a schematic view showing the positions of the first and second pitched roof in the open mold state according to the present utility model;

FIG. 9 is an enlarged view of FIG. 4 at A;

FIG. 10 is an exploded view of the molding assembly of the present utility model;

FIG. 11 is a schematic view of the structure of the top plate and spring of the present utility model;

In the figure:

1. 1.1, an upper die core;

2. 2.1 parts of a lower die plate, 2.2 parts of a lower die core and a guide channel;

3. The device comprises a top plate, a spring, a 3.1, a 3.2, a guide post, a 4, a first connecting block, a 4.1, a first chute, a 5, a second connecting block and a 5.1, second chute;

6. The device comprises a first inclined top, a first pin shaft, a second pin shaft, a first inclined top, a second pin shaft and a second pin shaft, wherein the first inclined top is 6.1;

8. Molding surface, 8.1 inverted molding surface, 8.2 first molding surface, 8.3 second molding surface, 8.4 third molding surface;

9. 9.1, a first chute;

10. 10.1, a second chute;

11. 11.1 parts of cavity walls, 11.2 parts of reverse buckles;

12. shrinking the gap;

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It will be understood that, although the terms upper, middle, lower, top, end, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another for ease of understanding and are not used to define any directional or sequential limitation.

As shown in fig. 1-11, a composite taper pin demolding structure comprises a lower die core 2.1 and a lower die plate 2 which are connected with each other, an upper die plate 1 and an upper die core 1.1 which are closed with the lower die core 2.1 and form a product 11 cavity, a top plate 3 which is elastically arranged at the bottom of the lower die plate 2, and a forming assembly which is arranged in the cavity in a sliding manner, wherein the forming assembly comprises a first connecting block 4 and a second connecting block 5 which are fixed on the top plate 3, and a first taper top 6 and a second taper top 7 which are obliquely penetrated in the lower die core 2.1, the first taper top 6 and the second taper top 7 are mutually jointed in a closed state and together define a forming surface 8 which is formed by encircling, the first taper top 6 is inclined to the second taper top 7 in the horizontal direction, and the inclination of the first taper top 6 is larger than that of the second taper top 7.

The product 11 is in a shell structure and is provided with a cavity wall part 11.1 with a downward opening, the cavity wall part 11.1 is in a convex rib structure surrounded by the periphery, a back-off part 11.2 is arranged on one side surface of the cavity wall part 11.1, and the molding surface 8 is at least three adjacent convex ribs forming the cavity wall part 11.1.

As shown in fig. 11, specifically, the ejector rod of the injection molding machine jacks up the top plate 3 during mold opening, so as to realize the ejection actions of the first inclined jack 6 and the second inclined jack 7, the top plate 3 is provided with a guide post 3.2 penetrating through the lower mold plate 2, the guide post 3.2 is sleeved with a spring 3.1, one end of the spring 3.1 is abutted against the top plate 3, the other end of the spring 3.1 is abutted against the bottom of the lower mold plate 2, and the spring 3.1 is used for providing a reset acting force after the ejector rod jacks up the top plate 3.

As can be seen from fig. 3, in particular, the first pitched roof 6 and the second pitched roof 7 are in lap joint through inclined planes, that is, opposite inclined planes are arranged between the first pitched roof 6 and the second pitched roof 7, so that close fit between the first pitched roof 6 and the second pitched roof 7 in a closed state is ensured, and meanwhile, the inclined plane fit mode allows the first pitched roof 6 to slide in a horizontal direction relative to the second pitched roof 7 during mold opening, so that interference between the first pitched roof 6 and the product 11 is avoided, and a shrinkage gap 12 is formed between the first pitched roof 6 and the product 11, so that demolding of the product 11 is facilitated.

As a further explanation of the molding surface 8, referring to fig. 5, the first oblique top 6 and the second oblique top 7 together define a back-off surface 8.1, and the back-off surface 8.1 jacks up the first connecting block 4 and the second connecting block 5 on the top plate 3 when the ejector rod of the injection molding press opens the mold, so that the first oblique top 6 and the second oblique top 7 slide obliquely in the lower mold core 2.1, and the back-off surface 8.1 is separated from the back-off part 11.2 of the product 11;

The first profile 8.2 is defined to one side of first oblique top 6, the second profile 8.3 is defined to the opposite side of second oblique top 7, and first profile 8.2 sets up with second profile 8.3 relatively, specifically is located the both sides of back-off profile 8.1 to back-off profile 8.1, first profile 8.2 and second profile 8.3 enclose each other and merge and constitute shaping profile 8.

Referring to fig. 9, specifically, the first inclined top 6 slides obliquely relative to the second inclined top 7 along with the mold opening action, and the first inclined top 6 is far away from the inverted molding surface 8.1 and the first molding surface 8.2, and a shrinkage gap 12 is spaced between the first inclined top 6 and the first molding surface 8.2, the shrinkage gap 12 allows the product 11 to shrink during demolding, adhesion between the product 11 and the first inclined top 6 is avoided, and the shrinkage gap 12 is larger than the shrinkage of the product 11 corresponding to the first molding surface 8.2.

As shown in fig. 1 and 10, in other embodiments, the molding assembly includes a rear molding block 9 disposed in the lower mold core 2.1, the rear molding block 9 defines a third molding surface 8.4 on the rear side of the first inclined top 6 and the second inclined top 7, and defines a first molding surface 8.2 together with the first inclined top 6 and a second molding surface 8.3 together with the second inclined top 7, the first to third molding surfaces 8.4 together form a cavity wall portion 11.1 surrounded by four sides of the product 11, the third molding surface 8.4 is disposed on the rear portion, the back-off molding surface 8.1 is disposed on the front portion, the first molding surface 8.2 and the second molding surface 8.3 are disposed on both sides, and the rear molding block 9 is provided with a rear overlap portion abutting on the lower mold core 2.1, and the first inclined top 6 and the second inclined top 7 have a horizontal upward stroke during the mold opening process, so that the cavity wall portion 11.1 of the product 11 is separated from the two corresponding portions in the two directions, and is effectively prevented from being pulled out during the mold opening process.

The first inclined top 6 and the second inclined top 7 are provided with mutually spliced step parts, the step parts are spaced on the molding surface 8, the rear molding block 9 is provided with a matching part matched with the step parts, and the rear molding block 9 is supported on the step parts, so that the position stability of the first inclined top 6 and the second inclined top 7 in the closing direction is further improved.

Specifically, the front side of the rear forming block 9 is provided with a first chute 9.1 matched with the first pitched roof 6 and the second pitched roof 7, and the first chute 9.1 is specifically matched above the corresponding step part, so that a holding and supporting function is provided on the oblique surfaces of the first pitched roof 6 and the second pitched roof 7.

Further, the forming assembly further comprises a front forming block 10 arranged in the lower die core 2.1, a front lap joint part which is abutted to the upper die core 1.1 is arranged on the front forming block 10, the front forming block 10 is positioned at the front sides of the first inclined roof 6 and the second inclined roof 7 and forms another forming part of the product 11, a second chute 10.1 matched with the first inclined roof 6 and the second inclined roof 7 is arranged on the front forming block 10, and the first chute 9.1 and the second chute 10.1 are oppositely arranged, so that the first inclined roof 6 and the second inclined roof 7 are closed under the holding effect between the front forming block 10 and the rear forming block 9.

Preferably, the second chute 10.1 is located below the first chute 9.1, so as to further optimize the retaining effect of the first chute roof 6 and the second chute roof 7 at different positions, and effectively improve the forming quality of the product 11.

Specifically, a first chute 4.1 is arranged on the first connecting block 4, a first pin shaft 6.1 which is arranged in the first chute 4.1 is arranged at the upper end of the first inclined top 6, a second chute 5.1 is arranged on the second connecting block 5, a second pin shaft 7.1 which is arranged in the second chute 5.1 is arranged at the upper end of the second inclined top 7, the first chute 4.1 and the first inclined top 6 are arranged in the same direction, and the first chute 4.1 and the second chute 5.1 which are arranged in the direction of the first inclined top 6 and the second inclined top 7 and are matched with each other are used for limiting the horizontal sliding of the first inclined top 6 and the second inclined top 7 in the die opening and die closing actions, so that the vertical movement of the first inclined top 6 and the second inclined top 7 is effectively avoided.

Wherein, the lower mould plate 2 is also provided with a guide channel 2.2 matched with the first connecting block 4 and the second connecting block 5.

As an example, the first angled roof 6 has a slope of 13 ° and the second angled roof 7 has a slope of 11 °, the first angled roof 6 being inclined 2 ° towards the second angled roof 7.

By the arrangement of the first inclined roof 6 and the second inclined roof 7, in the closed state, the inclined planes between the first inclined roof 6 and the second inclined roof 7 are spliced, the rear forming block 9 is supported at the rear sides of the first inclined roof 6 and the second inclined roof 7, and the first inclined roof 6 and the second inclined roof 7 are supported between the front forming block 10 and the rear forming block 9;

In the mold opening state, the ejector rod of the injection molding press jacks up the top plate 3 so as to drive the first connecting block 4 and the second connecting block 5 to vertically lift, the first inclined ejector 6 and the second inclined ejector 7 obliquely penetrate through the lower mold plate 2 and the lower mold core 2.1, at the moment, the first inclined ejector 6 and the second inclined ejector 7 obliquely slide away from the molding surface 8 at the same time, as can be seen in fig. 7 and 8, the distance between the first inclined ejector 6 and the back-off molding surface 8.1 is larger than the distance between the second inclined ejector 7 and the back-off molding surface 8.1, and as can be seen in fig. 9, the first inclined ejector 6 moves along the inclined direction of the horizontal plane of the first inclined ejector 6 and is separated from the first molding surface 8.2 by a shrinkage gap 12, at the moment, the rear molding block 9 and the front molding block 10 ascend along with the upper mold core 1.1, and the demolding of the molding assembly on the cavity wall part 11.1 and the back-off part 11.2 of the product 11 is completed.

The present embodiment is only for explanation of the present utility model and is not to be construed as limiting the present utility model, and modifications to the present embodiment, which may not creatively contribute to the present utility model as required by those skilled in the art after reading the present specification, are all protected by patent laws within the scope of claims of the present utility model.

Claims (10)

1. The utility model provides a compound taper pin drawing of patterns structure, its characterized in that includes interconnect's lower mould benevolence (2.1) and lower bolster (2), upper bolster (1) and last mould benevolence (1.1) with lower bolster (2.1) closure and constitute the die cavity of product (11), elasticity sets up roof (3) in lower bolster (2) bottom to and the shaping subassembly of slip setting in the die cavity, shaping subassembly includes first connecting block (4) and second connecting block (5) of fixing on roof (3), and first oblique top (6) and second oblique top (7) of obliquely wearing to establish in lower bolster (2.1), first oblique top (6) and second oblique top (7) are in the interengagement of closure state and together are bound into profile (8) that closes mutually, first oblique top (6) are inclined in the second oblique top (7) in the horizontal direction, just the inclination of first oblique top (6) is greater than second oblique top (7).

2. The composite inclined pin demoulding structure according to claim 1, wherein the first inclined top (6) and the second inclined top (7) are in lap joint through inclined planes.

3. The composite inclined pin demoulding structure as claimed in claim 1, wherein the first inclined top (6) and the second inclined top (7) together define an inverted mould surface (8.1), one side of the first inclined top (6) defines a first mould surface (8.2), the other side of the second inclined top (7) defines a second mould surface (8.3), and the inverted mould surface (8.1), the first mould surface (8.2) and the second mould surface (8.3) are mutually enclosed and combined to form the moulding surface (8).

4. The composite taper pin demolding structure according to claim 2, wherein in the demolding state, the distance between the first taper top (6) and the inverted mold surface (8.1) is larger than the distance between the second taper top (7) and the inverted mold surface (8.1).

5. The composite taper pin demolding structure according to claim 2, wherein the first taper top (6) slides obliquely relative to the second taper top (7) along with the demolding action, and the first taper top (6) is far away from the inverted molding surface (8.1) and the first molding surface (8.2) and is separated from the first molding surface (8.2) by a shrinkage gap (12).

6. The composite taper pin demolding structure according to claim 1, characterized in that the molding assembly comprises a rear molding block (9) arranged on the lower mold core (2.1), wherein the rear molding block (9) defines a third molding surface (8.4) on the rear sides of the first taper (6) and the second taper (7), and defines a first molding surface (8.2) together with the first taper (6) and defines a second molding surface (8.3) together with the second taper (7);

The front side of the rear forming block (9) is provided with a first chute (9.1) matched with the first inclined roof (6) and the second inclined roof (7).

7. The composite taper pin demolding structure according to claim 6, wherein the molding assembly further comprises a front molding block (10) arranged on the lower mold core (2.1), a second chute (10.1) matched with the first taper top (6) and the second taper top (7) is arranged on the front molding block (10), and the first chute (9.1) and the second chute (10.1) are arranged oppositely.

8. The composite taper pin demoulding structure according to claim 1, wherein a first chute (4.1) is formed in the first connecting block (4), a first pin shaft (6.1) arranged in the first chute (4.1) is arranged at the upper end of the first taper top (6), a second chute (5.1) is formed in the second connecting block (5), a second pin shaft (7.1) arranged in the second chute (5.1) is arranged at the upper end of the second taper top (7), and the first chute (4.1) and the first taper top (6) are arranged in the same direction.

9. The composite taper pin demoulding structure as claimed in claim 1, wherein the first taper (6) has a slope of 13 degrees and the second taper (7) has a slope of 11 degrees.

10. A composite angle pin stripping structure as claimed in claim 1, characterized in that the first angle roof (6) is inclined by 2 DEG towards the second angle roof (7).