CN218640179U

CN218640179U - Supporting structure for improving rubber coating die burrs

Info

Publication number: CN218640179U
Application number: CN202223305654.4U
Authority: CN
Inventors: 梁杰; 蔡峻峰; 孙鹏
Original assignee: Jianda Precision Electronics Shandong Co ltd
Current assignee: Jianda Precision Electronics Shandong Co ltd
Priority date: 2022-12-09
Filing date: 2022-12-09
Publication date: 2023-03-17
Anticipated expiration: 2032-12-09

Abstract

The utility model relates to an injection mold, concretely relates to improve supporting structure that rubber coating mould draped over one's shoulders cutting edge of a knife or a sword, including installing the mold insert on the die holder, the cross sectional shape of mold insert is the same with the cross sectional shape of prefab cavity, and prefab cavity import department is length one to the distance of injection molding, and the mold insert stretches into in the cavity of prefab and the degree of depth of stretching into of mold insert is greater than length one. The utility model discloses a set up the mold insert for the mold insert inserts to the inside of prefab, strengthens the intensity of prefab, and accomplishes the horizontal location of prefab through the constant head tank of mold insert and the locating piece of prefab, makes when moulding plastics, and the prefab is difficult to the deformation under the support of mold insert more, thereby reduces the problem that drapes over one's shoulders the cutting edge of a knife or a sword and appear.

Description

Supporting structure for improving rubber coating die burrs

Technical Field

The utility model relates to an injection mold especially relates to an improve rubber coating mould and drape over one's shoulders bearing structure of cutting edge of a knife or a sword.

Background

Injection moulding, form the injection mould chamber through front mould and back mould, mould plastics in the injection mould chamber again, make the molten form plastics fill in the injection mould intracavity, thereby accomplish the production of injection molding, in actual production, because the structure of part injection molding is comparatively complicated, divide into a plurality of parts with the injection molding usually, the formation prefab of moulding plastics of the part injection molding of preferential completion, fix the prefab in subsequent mould again, accomplish and mould plastics, make production technology simpler, prevent that the injection molding structure is complicated, the condition that the structure is difficult to stabilize when causing to mould plastics.

However, because the injection-molded part is generally a hollow structure, especially for some tubular encapsulated products, when encapsulating the outer side of the prefabricated part, a large pressure is generally applied to ensure the movement of the raw materials in a molten state during injection molding, and when the large pressure is applied, the strength of the prefabricated part is limited because the prefabricated part is an injection-molded product sheet, certain deformation is generated under the high-temperature and high-pressure injection molding, and after injection molding, a gap is formed between the deformation part and the mold, so that the raw materials move to the gap part, and burrs are easily formed, and the product quality is seriously affected.

Therefore, a new technical solution is needed to solve the problem of flash caused by deformation of the hollow preform due to the injection pressure.

SUMMERY OF THE UTILITY MODEL

In view of the above, an object of the present invention is to provide a supporting structure for improving a flash of a rubber coating mold, so as to solve the above-mentioned problems.

Based on the above purposes, the utility model provides a supporting structure for improving the flash of a rubber coating mold, which is applied to supporting prefabricated parts during injection molding,

a die holder;

the mold insert is arranged on the mold base and provided with a supporting part, at least one part of the supporting part is inserted from the entrance of the cavity of the prefabricated part, and the cross section of the supporting part is matched with the shape of the inner wall at the entrance of the cavity of the prefabricated part;

wherein, the distance from the inlet of the cavity of the prefabricated part to the edge of the injection molding part is L1, the depth of the supporting part inserted into the inlet of the cavity of the prefabricated part is L2, and L2-L1 is more than 0.

Preferably, one side of the insert close to the prefabricated member is provided with a positioning groove, and the interior of the prefabricated member is fixedly connected with a positioning rod embedded in the positioning groove.

Preferably, the die holder is provided with a driving assembly for inserting or detaching the insert, and the insert is detachably connected to the output end of the driving assembly.

Preferably, the driving assembly comprises a sliding block seat in sliding connection along the inlet direction of the cavity of the prefabricated member, an installation block is detachably connected to the sliding block seat, an installation groove embedded with the insert is formed in the installation block, a fixing block is fixedly connected to the insert, and the fixing block is used for limiting displacement of the insert along the length direction of the insert.

Preferably, the cross section of the insert is circular, the cross section of the fixing block is arched, the arc of the arch is a major arc, and the radius of the major arc is greater than that of the insert.

Preferably, the slider seat is fixedly connected with a positioning edge, and the mounting block is provided with a positioning long groove corresponding to the positioning edge.

Preferably, the die holder is provided with a supporting block for supporting the prefabricated member, the supporting block is arranged opposite to the insert, and the supporting block is in clearance fit with the prefabricated member.

Preferably, the number of inserts is the same as the number at the entrance of the preform cavity. .

The utility model has the advantages that: the utility model discloses a set up the mold insert for the mold insert inserts the import department to the cavity of prefab, and make the cross sectional shape of mold insert the same with the cross sectional shape of cavity import department, make the support of prefab be accomplished to the mold insert, stretch into the certain degree of depth to the cavity with the mold insert, guarantee when moulding plastics, injection pressure eliminates the deformation of injection molding to the complete transmission of effort to the mold insert of prefab, thereby eliminates because the flash of a knife or a sword problem that produces of moulding plastics pressure.

Drawings

In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only the present invention, and those skilled in the art can obtain other drawings without creative efforts.

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a cross-sectional view of the present invention;

FIG. 3 is an enlarged view of portion A of FIG. 2;

fig. 4 is a cross-sectional view of the present invention;

FIG. 5 is an enlarged view of the portion B of FIG. 4;

fig. 6 is a schematic structural view of the middle fixing block and the insert of the present invention;

fig. 7 is a schematic structural view of the middle sliding seat of the present invention.

Labeled in the figure as: 1. a die holder; 2. an insert; 3. a prefabricated member; 4. positioning a groove; 5. positioning a rod; 6. a slider seat; 7. mounting blocks; 8. mounting grooves; 9. a fixed block; 10. positioning the edge; 11. positioning the long groove; 12. a support block; 13. and (5) injection molding.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the following embodiments.

It should be noted that unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by those having ordinary skill in the art to which the present invention belongs. The use of "first," "second," and similar terms in the description herein do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

As shown in fig. 1-7, a supporting structure for improving flash of a rubber coating mold comprises a mold base 1, an insert 2, a driving assembly and a supporting block 12, wherein the driving assembly is arranged on the mold base 1, the insert 2 is fixedly connected with an output end of the driving assembly, and the supporting block 12 is arranged right opposite to the peripheral wall of the insert 2.

As shown in fig. 4 and 5, the cross-sectional shape of the insert 2 is adapted to the shape of the inner wall at the inlet of the cavity of the preform 3, and it is ensured that the insert 2 has a supporting portion which can be inserted from the inlet of the cavity of the preform 3, meanwhile, the distance from the inlet of the cavity of the preform 3 to the edge of the injection molding part 13 is L1, the depth of the supporting portion inserted into the inlet of the cavity of the preform 3 is L2, it is ensured that L2 is greater than L1, when the supporting portion is inserted into the inlet of the cavity of the preform 3, the supporting portion is attached to the inner wall of the cavity of the preform 3, during injection molding, the injection molding pressure acts on the preform 3, because the gap of the mold is located at the edge of the injection molding part 13, the insert 2 is arranged to limit the deformation of the preform 3 towards the inner portion, the balance of the injection molding pressure is completed, thereby preventing the gap from being formed between the deformed preform 3 and the mold, and causing flash of the preform,

as shown in fig. 1, 2, offer the chamber of moulding plastics that is used for accepting the material on the die holder 1, one side intercommunication in the chamber of moulding plastics has the spout, drive assembly sets up in the spout, drive assembly includes the sliding seat of sliding connection in the spout, the sliding seat is used for being connected with cylinder or guide bar, thereby guarantee that the sliding seat slides along the length direction of spout, fixed block 9 can dismantle the connection at one side that the sliding seat is close to the chamber of moulding plastics through the bolt, mounting groove 8 has been seted up on fixed block 9, mounting groove 8 runs through fixed block 9 along sliding seat sliding direction, mold insert 2 is through alternate in mounting groove 8 and stretch into to the intracavity of moulding plastics, thereby accomplish the connection of dismantling of mold insert 2 through fixed block 9.

As shown in fig. 6, since the cavity of the preform 3 is generally circular to ensure the strength thereof, the cross-sectional shape of the insert 2 is generally circular, the fixing block 9 is coaxially and fixedly connected to the insert 2, the cross-sectional shape of the fixing block 9 is arcuate and the arcuate arc is a major arc, and the radius of the major arc is greater than that of the insert 2, since the mounting groove 8 is used for embedding the insert 2, at this time, the mounting groove 8 and the sliding seat of the fixing block 9 limit the sliding of the insert 2 relative to the sliding seat, and simultaneously, the arcuate fixing block 9 and the arcuate mounting groove 8 are mutually matched to make the fixing block 9 difficult to rotate, thereby ensuring the stability of the insert 2 during machining.

As shown in fig. 6 and 7, the slide seat is fixedly connected with a positioning edge 10, the mounting block 7 is provided with a positioning long groove 11 corresponding to the positioning edge 10, the positioning edges 10 are provided with a plurality of mutually perpendicular positioning edges, and because the cylindrical shape of the insert 2 generally only ensures the precision in the x direction, the y direction and the z direction in production and processing, and the length direction of the positioning edge 10 is perpendicular to the axial direction of the insert 2, the precision of the mounting groove 8 on the mounting block 7 can be ensured through the positioning of the positioning edge 10 on the mounting block 7, so that the precision of the insert 2 is ensured, and the insert 2 is ensured to be opposite to the inlet of the prefabricated part 3.

As shown in fig. 3 and 5, a mold is provided with a support block 12 for manufacturing the preform 3, the support block 12 is disposed opposite to the insert 2, the support block 12 and the preform 3 are in clearance fit, because the preform 3 and the mold are in interference fit in the production process generally, and when the front mold and the rear mold are closed in the machining process, the two mold bases 1 form indentations on the preform 3, which affects the appearance of the product, and by disposing the support block 12, the support block 12 not only completes the limitation of the edge of the injection molded part 13, but also adjusts the position of the support block 12, thereby making it difficult for the support block 12 to form indentations on the preform 3.

As shown in fig. 4 and 5, a positioning groove 4 is formed in one side of the insert 2 close to the prefabricated part 3, a positioning rod 5 is reserved during the manufacturing of the prefabricated part 3, when the insert 2 is inserted into the cavity of the prefabricated part 3, the positioning groove 4 of the insert 2 is simultaneously embedded with the positioning rod 5, the positioning groove 4 is embedded with the positioning rod 5, the pressure of the flowing raw materials to each part of the prefabricated part 3 is different during the injection molding process, the embedded between the positioning rod 5 and the positioning groove 4 enables the prefabricated part 3 to be more difficult to deform during the injection molding process, and the deflection of the prefabricated part 3 or the deflection of the outlet of the cavity is prevented.

Those of ordinary skill in the art will understand that: the discussion of any embodiment above is meant to be exemplary only, and is not intended to suggest that the scope of the invention (including the claims) is limited to these examples; within the idea of the invention, also technical features in the above embodiments or in different embodiments can be combined, steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity.

The present invention is intended to embrace all such alternatives, modifications and variances which fall within the broad scope of the appended claims. Therefore, any omissions, modifications, substitutions, improvements and the like that may be made without departing from the spirit and principles of the invention are intended to be included within the scope of the invention.

Claims

1. A supporting structure for improving the flash of a rubber coating mold is applied to supporting a prefabricated member (3) during injection molding and is characterized in that,

a die holder (1);

the insert (2) is arranged on the die holder (1), the insert (2) is provided with a supporting part which is inserted into at least one part of the cavity inlet of the prefabricated part (3), and the cross section shape of the supporting part is matched with the shape of the inner wall of the cavity inlet of the prefabricated part (3);

wherein, the distance from the inlet of the cavity of the prefabricated part (3) to the edge of the injection molding part (13) is L1, the depth of the supporting part inserted into the inlet of the cavity of the prefabricated part (3) is L2, and L2-L1 is more than 0.

2. The supporting structure for improving the flash of the rubber coating mold according to claim 1, wherein a positioning groove (4) is formed in one side of the insert (2) close to the prefabricated member (3), and a positioning rod (5) embedded in the positioning groove (4) is fixedly connected to the inside of the prefabricated member (3).

3. The supporting structure for improving the flash of the over-mold according to claim 1, wherein a driving assembly for inserting or detaching the insert (2) is disposed on the mold base (1), and the insert (2) is detachably connected to an output end of the driving assembly.

4. The supporting structure for improving the flash of the over-mold according to claim 3, wherein the driving assembly comprises a slider seat (6) slidably connected along the cavity inlet direction of the prefabricated member (3), the slider seat (6) is detachably connected with a mounting block (7), the mounting block (7) is provided with a mounting groove (8) embedded with the insert (2), the insert (2) is fixedly connected with a fixing block (9), and the fixing block (9) is used for limiting the displacement of the insert (2) along the length direction of the insert.

5. The supporting structure for improving the flash of the over-mold according to claim 4, wherein the cross-sectional shape of the insert (2) is circular, the cross-sectional shape of the fixing block (9) is arc-shaped, and the arc of the arc is a major arc, and the radius of the major arc is larger than that of the insert (2).

6. The supporting structure for improving the flash of the over-mold coating according to claim 4, wherein a positioning edge (10) is fixedly connected to the slider seat (6), and a positioning long groove (11) is formed in the mounting block (7) corresponding to the positioning edge (10).

7. The supporting structure for improving the flash of the overmold according to claim 1, wherein the mold base (1) is provided with a supporting block (12) for supporting the preform (3), the supporting block (12) is disposed opposite to the insert (2), and the supporting block (12) is in clearance fit with the preform (3).

8. The support structure for improving the flash of an overmold according to claim 1, wherein the number of inserts (2) is the same as the number of inserts at the entrance of the cavity of the preform (3).