CN219686437U

CN219686437U - Injection mold capable of laterally drawing and demolding

Info

Publication number: CN219686437U
Application number: CN202320967169.9U
Authority: CN
Inventors: 戴林冲; 朱文迪; 戴尚峰
Original assignee: Dongguan Jiabo Mould Co ltd
Current assignee: Dongguan Jiabo Mould Co ltd
Priority date: 2023-04-25
Filing date: 2023-04-25
Publication date: 2023-09-15
Anticipated expiration: 2033-04-25

Abstract

The utility model relates to the technical field of molds, in particular to an injection mold with side-drawing demolding function. The injection mold for side drawing and demolding comprises a movable mold assembly and a fixed mold assembly; the movable die assembly comprises a movable die holder and a movable die core; the movable mould core is arranged on the movable mould base; the fixed die assembly comprises a fixed die base, a fixed die core, a demoulding frame and at least one side sliding block; the fixed die core is fixedly connected to the fixed die base; the demolding frame is sleeved on the outer side of the fixed mold core, a plurality of first telescopic drivers are arranged at the side ends of the demolding frame, and the output ends of the first telescopic drivers are fixedly connected with the fixed mold seat; the side sliding block is arranged on the outer side of the fixed die seat and is connected to the demoulding frame in a sliding way, and a second telescopic driver for driving the side sliding block to be close to or far away from the fixed die core is arranged on the demoulding frame. The utility model solves the problems that when the injection molding product has no flat supporting point on the surface, if the ejector pin is still used for ejection, the ejector pin is difficult to process, the surface of the product is easily damaged in the ejection process, and the yield of the product is reduced.

Description

Injection mold capable of laterally drawing and demolding

Technical Field

The utility model relates to the technical field of molds, in particular to an injection mold with side-drawing demolding function.

Background

Injection molding is a method for producing shapes of industrial products, which generally uses rubber injection molding and plastic injection molding, and an injection molding machine is a main molding device for manufacturing plastic products of various shapes from thermoplastic plastics or thermosetting materials by using a plastic molding die, and injection molding is performed by the injection molding machine and the die.

The existing injection mold realizes the demolding of the product by adopting a thimble ejection mode after the product is molded, and particularly, the injection mold can be referred to Chinese patent documents with publication number of CN206048700U, CN108115902B and the like, and ejection demolding is realized by adopting a thimble structure. Referring to fig. 1, a schematic structure diagram of an injection molding product is shown, wherein the surface of the injection molding product is composed of a plurality of sheet bodies, if the ejector pin is used for ejecting the mold, the ejector pin is difficult to process, and the sheet bodies are easily damaged in the ejection process, so that the yield of the product is reduced.

Therefore, there is a need to provide a solution to the above-mentioned problems.

Disclosure of Invention

The utility model provides an injection mold with side-drawing demolding, which aims to solve the problems that when a product with a surface without a flat supporting point is molded by the existing injection mold, if the ejection mode of an ejector pin is still adopted for demolding, the ejector pin is difficult to process, the surface of the product is extremely easy to damage in the ejection process, and the yield of the product is reduced.

In order to achieve the above purpose, the utility model provides an injection mold with side-drawing demolding, which comprises a movable mold assembly and a fixed mold assembly; wherein:

the movable die assembly comprises a movable die holder and a movable die core; the movable die core is arranged on the movable die holder;

the fixed die assembly comprises a fixed die base, a fixed die core, a demoulding frame and at least one side sliding block; the fixed die core is fixedly connected to the fixed die holder; the demolding frame is sleeved on the outer side of the fixed mold core, a plurality of first telescopic drivers are arranged at the side ends of the demolding frame, and the output ends of the first telescopic drivers are fixedly connected with the fixed mold seat; the at least one side sliding block is arranged on the outer side of the fixed die core and is connected to the demolding frame in a sliding mode, and a second telescopic driver for driving the side sliding block to be close to or far away from the fixed die core is arranged on the demolding frame.

More specifically, the movable mold core is provided with a first molding groove, and the fixed mold core is provided with a second molding groove; the side sliding block is provided with two blocks, the two blocks are oppositely arranged, and one opposite side of the side sliding block is provided with a molding surface; when the mold is closed, the first molding groove, the second molding groove and the molding surface are combined to form a molding cavity.

More specifically, the side wall of the fixed die core is obliquely arranged, the inner side wall of the demoulding frame is obliquely arranged, and the inclination degree of the side wall of the fixed die core is the same as that of the inner side wall of the demoulding frame.

More specifically, the included angle formed between the side wall of the fixed die core and the vertical surface is 3-10 degrees.

More specifically, the fixed die core is provided with a positioning block, and the movable die core is provided with a positioning groove corresponding to the positioning block; and when the mold is closed, the positioning block is arranged in the positioning groove.

More specifically, the fixed die holder is provided with a positioning column, and the side wall of the positioning column is obliquely arranged; the bottom of the demoulding frame is provided with a notch corresponding to the positioning column.

More specifically, the demolding frame is provided with a limiting groove, a bolt is arranged in the limiting groove, and the bolt penetrates through the demolding frame and is in threaded connection with the fixed mold seat; when the die is assembled, the head of the bolt and the bottom wall of the limit groove are not contacted with each other.

More specifically, an inclined surface is arranged on one side of the side sliding block away from the fixed die core; a pushing block is arranged on the movable die holder, and an abutting surface matched with the inclined surface is arranged on the pushing block; and when the die is assembled, the abutting surface is contacted with the inclined surface.

More specifically, one end of the side sliding block, which is close to the fixed die core, is provided with a forming hole, and a forming rod is arranged in the forming hole.

More specifically, the movable mold core and the fixed mold core are respectively provided with a cooling flow passage, and the movable mold base and the fixed mold base are respectively provided with a water inlet pipe and a water outlet pipe which are communicated with the cooling flow passages.

The side-drawing demolding injection mold has the technical effects that:

the utility model provides a die structure capable of realizing demolding without arranging ejector pins, after a product is molded, side sliding blocks and side walls of a demolding frame are positioned at two sides of the product to clamp the product, then the demolding frame is driven by a first telescopic driver to move towards one side far away from a fixed die holder, a molded product is separated from a fixed die core, and then a second telescopic driver moves the side sliding blocks to slide outwards to remove clamping force on the product, so that the demolding of the product is completed. By adopting the design, the ejector pin is not required to be arranged, the processing difficulty is reduced, and the damage of the product during demolding is effectively avoided.

Drawings

FIG. 1 is a schematic view of an injection molded product

Fig. 2 is a schematic structural diagram of an injection mold with side-draw demolding in a mold closing state according to the present utility model;

fig. 3 is a schematic structural view of an injection mold with side-draw demolding in an opened state;

FIG. 4 is a schematic diagram of a movable mold assembly in an injection mold with side-draw demolding according to the present utility model;

FIG. 5 is a top view of a stationary mold assembly in a side draw mold release injection mold according to the present utility model;

FIG. 6 is an enlarged schematic view of FIG. 5A;

FIG. 7 is a schematic cross-sectional view taken in the direction B-B of FIG. 5;

FIG. 8 is an enlarged schematic view of FIG. 7 at D;

FIG. 9 is a schematic cross-sectional view taken along the direction C-C in FIG. 5;

fig. 10 is a schematic structural view of a side slider in an injection mold with side-draw demolding according to the present utility model.

The marks in the figure:

1. a movable mold assembly; 2. a stationary mold assembly; 3. an ejection assembly;

11. a movable die holder; 12. a movable mold core; 121. a positioning groove; 13. pushing the jacking block;

21. a fixed die holder; 211. positioning columns; 212. a bolt; 22. a fixed mould core; 221. a positioning block; 23. a demoulding frame; 231. a limit groove; 24. a side slider; 241. forming a hole; 242. forming a rod; 25. a first telescopic drive; 26. a second telescopic drive;

31. a bottom plate; 32. square iron; 33. an ejector plate; 34. a thimble; 35. pushing the column.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the description of the embodiments of the present utility model, it should be understood that the directions or positional relationships indicated by "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience in describing the embodiments of the present utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In order to more clearly illustrate the technical scheme of the utility model, a preferred embodiment is provided below, and referring specifically to fig. 1 to 10, an injection mold with side-drawing demolding comprises a movable mold assembly 1 and a fixed mold assembly 2; wherein:

the movable die assembly 1 comprises a movable die holder 11 and a movable die core 12; the movable mould core 12 is arranged on the movable mould base 11;

the fixed die assembly 2 comprises a fixed die holder 21, a fixed die core 22, a demoulding frame 23 and at least one side sliding block 24; the fixed die core 22 is fixedly connected to the fixed die seat 21; the demoulding frame 23 is sleeved on the outer side of the fixed mould core 22, a plurality of first telescopic drivers 25 are arranged at the side ends of the demoulding frame, and the output ends of the first telescopic drivers 25 are fixedly connected with the fixed mould base 21; at least one side sliding block 24 is arranged on the outer side of the fixed die core 22 and is connected to the demoulding frame 23 in a sliding way, and a second telescopic driver 26 for driving the side sliding block 24 to be close to or far away from the fixed die core 22 is arranged on the demoulding frame 23.

In the present embodiment, a first molding groove is formed on the movable mold core 12, and a second molding groove is formed on the fixed mold core 22; the side sliding blocks 24 are provided with two blocks, the two side sliding blocks 24 are oppositely arranged, and the opposite sides of the two side sliding blocks are provided with molding surfaces; when the mold is closed, the first molding groove, the second molding groove and the molding surface are combined to form a molding cavity. The gate on the movable die holder 11 is communicated with the first molding groove.

The working process of the injection mold for side-drawing demolding comprises the following steps: during die assembly, hot melt glue material is introduced along a gate and enters a forming cavity, after the hot melt glue material is cooled and formed, the injection molding machine drives the movable die holder 11 to move to open a die, then the first telescopic driver 25 drives the demoulding frame 23 to move to a side far away from the fixed die holder 21, under the clamping of the side sliding blocks 24 and the inner side walls of the demoulding frame 23, a formed product is separated from the fixed die core 22, and then the second telescopic driver 26 drives the side sliding blocks 24 to slide outwards so as to remove the clamping force of the two side sliding blocks 24 on the product, so that the demoulding is completed. By adopting the design of the utility model, the thimble 34 is not required to be arranged, the processing difficulty is reduced, and the damage of the product during demolding is effectively avoided.

Preferably, the first telescopic driver 25 and the second telescopic driver 26 are oil cylinders.

In the embodiment, the side wall of the mold core 22 is inclined, the inner side wall of the mold releasing frame 23 is inclined, and the inclination of the side wall of the mold core 22 is the same as the inclination of the inner side wall of the mold releasing frame 23. By adopting the design, friction loss is avoided between the demoulding frame 23 and the fixed mould core 22 when moving, and the service life of the mould is prolonged.

Preferably, the included angle formed between the side wall of the fixed die core 22 and the vertical surface is 3 degrees to 10 degrees. When the included angle is too large, the bottom wall area of the knock out frame 23 is too small, which easily results in unstable structure of the knock out frame 23.

In the present embodiment, the fixed mold core 22 is provided with a positioning block 221, and the movable mold core 12 is provided with a positioning slot 121 corresponding to the positioning block 221; when the mold is closed, the positioning block 221 is placed in the positioning groove 121. Specifically, the matching of the positioning block 221 and the positioning groove 121 improves the alignment precision of the movable mold core 12 and the fixed mold core 22, so as to improve the quality of the molded product.

In this embodiment, the positioning column 211 is disposed on the positioning mold base 21, and the side wall of the positioning column 211 is disposed in an inclined manner; the bottom of the demoulding frame 23 is provided with a notch corresponding to the positioning column 211. Specifically, the cooperation of the positioning column 211 and the notch ensures that the demolding frame 23 can be stably reset, so that the reset precision of the side sliding block 24 is improved, and the quality of a molded product is improved.

In this embodiment, the demolding frame 23 is provided with a limiting groove 231, a bolt 212 is arranged in the limiting groove 231, and the bolt 212 penetrates through the demolding frame 23 and is in threaded connection with the fixed mold seat 21; when the mold is closed, the head of the bolt 212 and the bottom wall of the limit groove 231 do not contact each other. Specifically, the bolt 212 and the limit groove 231 cooperate to play a guiding role and a limiting role on the demoulding frame 23, so that stability of the demoulding frame 23 during movement is improved.

In the present embodiment, an inclined surface is provided on one side of the side slider 24 away from the fixed mold core 22; the movable die holder 11 is provided with a push block 13, and the push block 13 is provided with an abutting surface matched with the inclined surface; when the mold is closed, the contact surface is contacted with the inclined surface. The side sliding block 24 is pushed by the pushing block 13, so that the side sliding block 24 can be accurately reset, and the structural stability of the forming cavity is further ensured.

In this embodiment, a molding hole 241 is formed at one end of the side slider 24 near the fixed mold core 22, and a molding rod 242 is installed in the molding hole 241. It should be noted that, when the structures such as the convex ring or the groove are formed on the molded product, the molded product may be clamped on the side sliding block 24 during the demolding process, so that the moving speed of the output end of the second telescopic driver 26 needs to be increased to separate the molded product from the side sliding block 24 by using inertia, or a manipulator is additionally used to clamp the molded product, so as to take out the product.

In this embodiment, the movable mold core 12 and the fixed mold core 22 are provided with cooling channels, and the movable mold base 11 and the fixed mold base 21 are provided with a water inlet pipe and a water outlet pipe which are communicated with the cooling channels. By introducing condensed water into the cooling flow channel, the condensation speed of the hot melt adhesive can be increased, and the product forming efficiency is improved.

In the present embodiment, the fixed die holder 21 is further provided with an ejection assembly 3; the ejection assembly 3 comprises a bottom plate 31, square iron 32, an ejection plate 33, ejector pins 34 and push posts 35; the bottom plate 31 is arranged on one side of the fixed die holder 21 away from the movable die holder 11, and the bottom plate 31 is fixedly connected with the fixed die holder 21 through a square iron 32; the ejector plate 33 is arranged between the bottom plate 31 and the fixed die seat 21 and is connected with the bottom plate 31 in a sliding manner; the ejector pin 34 is arranged on the ejector plate 33, penetrates through the fixed die holder 21 and the fixed die core 22, and extends to a water gap of the molded product; the push post 35 is mounted on the ejector plate 33, penetrates the fixed die holder 21, and is fixedly connected with the demoulding frame 23. By adopting the design, when demoulding, the ejector pin 34 can jack up the water gap of the product, namely, the center of the product is supported, so that the product and the fixed die core 22 are smoothly demoulded; the pushing post 35 applies pushing force to the demoulding frame 23 along with the movement of the ejection plate 33, and the smooth movement of the demoulding frame 23 is ensured by the cooperation of the pushing post 35 and the first telescopic driver 25.

According to the injection mold with the side-drawing demolding function, through reasonable structural arrangement, the problems that when a product with a surface without a flat supporting point is molded by the existing injection mold, if the ejector pin is still used for demolding, the ejector pin is difficult to process, the surface of the product is easily damaged in the ejection process, and the yield of the product is reduced are solved.

The above-mentioned embodiments of the present utility model are not limited to the above-mentioned embodiments, but can be modified, equivalent, and improved within the spirit and principle of the present utility model, and the present utility model is also included in the scope of the present utility model.

Claims

1. An injection mold of drawing of patterns is taken out to side which characterized in that: comprises a movable die assembly and a fixed die assembly; wherein:

2. The side-draw, demolded injection mold of claim 1, wherein: the movable mold core is provided with a first molding groove, and the fixed mold core is provided with a second molding groove; the side sliding block is provided with two blocks, the two blocks are oppositely arranged, and one opposite side of the side sliding block is provided with a molding surface; when the mold is closed, the first molding groove, the second molding groove and the molding surface are combined to form a molding cavity.

3. The side-draw, demolded injection mold of claim 1, wherein: the side wall of the fixed die core is obliquely arranged, the inner side wall of the demoulding frame is obliquely arranged, and the inclination degree of the side wall of the fixed die core is the same as that of the inner side wall of the demoulding frame.

4. A side-draw injection mold according to claim 3, wherein: the included angle formed between the side wall of the fixed die core and the vertical surface is 3-10 degrees.

5. The side-draw, demolded injection mold of claim 1, wherein: the fixed die core is provided with a positioning block, and the movable die core is provided with a positioning groove corresponding to the positioning block; and when the mold is closed, the positioning block is arranged in the positioning groove.

6. The side-draw, demolded injection mold of claim 1, wherein: the fixed die holder is provided with a positioning column, and the side wall of the positioning column is obliquely arranged; the bottom of the demoulding frame is provided with a notch corresponding to the positioning column.

7. The side-draw, demolded injection mold of claim 1, wherein: the demolding frame is provided with a limiting groove, a bolt is arranged in the limiting groove, and the bolt penetrates through the demolding frame and is in threaded connection with the fixed mold seat; when the die is assembled, the head of the bolt and the bottom wall of the limit groove are not contacted with each other.

8. The side-draw, demolded injection mold of claim 1, wherein: an inclined surface is arranged on one side of the side sliding block away from the fixed die core; a pushing block is arranged on the movable die holder, and an abutting surface matched with the inclined surface is arranged on the pushing block; and when the die is assembled, the abutting surface is contacted with the inclined surface.

9. The side-draw, demolded injection mold of claim 1, wherein: the side sliding block is close to one end of the fixed die core and is provided with a forming hole, and a forming rod is arranged in the forming hole.

10. The side-draw, demolded injection mold of claim 1, wherein: the movable die core and the fixed die core are respectively provided with a cooling flow passage, and the movable die base and the fixed die base are respectively provided with a water inlet pipe and a water outlet pipe which are communicated with the cooling flow passages.