CN219583462U

CN219583462U - Injection mold

Info

Publication number: CN219583462U
Application number: CN202321353262.7U
Authority: CN
Inventors: 林强
Original assignee: Shanghai Lingtian Precision Molding Co ltd
Current assignee: Shanghai Lingtian Precision Molding Co ltd
Priority date: 2023-05-30
Filing date: 2023-05-30
Publication date: 2023-08-25
Anticipated expiration: 2033-05-30

Abstract

The utility model relates to an injection mold, which relates to the field of injection molds and comprises an upper mold set and a lower mold set, wherein the upper mold set comprises an upper mold base, the lower mold set comprises a lower mold base, the lower mold set further comprises a lower mold sleeve, the lower mold sleeve is arranged on the periphery side of the lower mold base in a sliding manner along the direction of approaching or keeping away from the upper mold base, the lower mold set further comprises a driving piece for driving the lower mold sleeve to slide, and a molding cavity for molding a product is formed among the upper mold base, the lower mold base and the lower mold sleeve. According to the utility model, the lower die sleeve is arranged on the periphery of the lower die holder in a sliding manner, and when the die is opened after the product is formed, the lower die sleeve is driven by the driving piece to slide away from one side of the upper die holder, so that the product can be separated from the lower die sleeve, and the product is convenient to take out.

Description

Injection mold

Technical Field

The utility model relates to the field of injection molds, in particular to an injection mold.

Background

The injection mold is a tool for producing plastic products; is also a tool for endowing plastic products with complete structure and precise dimensions. Injection molding is a process used in mass production of parts of complex shape. Specifically, the heated and melted plastic is injected into a die cavity under high pressure by an injection molding machine, and a formed product is obtained after cooling and solidification.

In the related art, a conventional injection mold generally comprises a male mold and a female mold, ejector pin demolding structures are arranged on the male mold and the female mold, and products are ejected out of the male mold and the female mold through a plurality of ejector pins during demolding, so that product demolding is realized.

In practical use, the contact area between the ejector pin and the product is small, so that the product is easy to be damaged locally in the demolding process. To this end, the inventors have provided an injection mold that facilitates demolding.

Disclosure of Invention

In order to reduce damage to products during demolding, the utility model provides an injection mold which has the effect of facilitating demolding.

The injection mold provided by the utility model adopts the following technical scheme:

the utility model provides an injection mold, includes module and lower module, the module includes the upper die base, the lower module includes the die holder, the lower module still includes the lower die sleeve, the lower die sleeve along be close to or keep away from in the direction of upper die base slide set up in the die holder week side down, the lower module still includes the drive the gliding driving piece of lower die sleeve, the upper die base the die holder and be formed with the shaping chamber that is used for the shaping product between the die sleeve down.

By adopting the technical scheme, the lower die sleeve is arranged on the periphery of the lower die holder, and when the die is closed, the lower die sleeve, the lower die holder and the upper die holder are combined to form a forming cavity; after the product is formed, the upper die holder moves to the side far away from the lower die holder, the product can be left between the lower die holder and the lower die sleeve, and then the lower die sleeve is driven by the driving piece to move to the side far away from the upper die holder, so that the product is separated from the lower die sleeve, and the product is conveniently taken out; meanwhile, the ejector pins are not used for demolding the product, so that the qualification rate of the product can be effectively improved.

Optionally, the lower die sleeve is provided with two and respectively symmetry set up in the both sides of die holder, the driving piece corresponds the lower die sleeve is provided with two, the die holder both sides correspond the lower die sleeve is provided with the guide surface of slope, the guide surface keep away from the upper die base is kept away from gradually the center of die holder.

Through adopting above-mentioned technical scheme, set up the lower die cover into two to set up the guide surface on the die holder, when the die sinking, the in-process that the lower die cover was opened along the guide surface can keep away from die holder central point put to both sides, makes the quick drawing of patterns of product, reduces the resistance that the lower die cover removed.

Optionally, a guide rail with a T-shaped cross section profile is arranged on the guide surface, the guide rail is arranged along the feeding direction of the lower die sleeve, a chute is arranged on the lower die sleeve corresponding to the guide rail, and the guide rail is in sliding fit with the chute.

Through adopting above-mentioned technical scheme, set up the guide rail on the guide surface, set up the spout on the lower die sleeve, at the in-process of die sinking and compound die, the lower die sleeve slides along the guide rail all the time, can effectively improve the position accuracy of lower die sleeve, improves the precision of product.

Optionally, a stopper is disposed on the lower die holder at one end of the guide rail, which is close to the molding cavity, and a stop block is disposed on the lower die sleeve corresponding to the stopper, and when the die is closed, the stop block abuts against the stopper.

Through adopting above-mentioned technical scheme, set up the stopper on the die holder, set up the dog on the lower die sleeve, at the in-process of compound die, the dog can butt on the stopper, carries out the spacing to the lower die sleeve, improves the position accuracy of lower die sleeve.

Optionally, the die release hole has been run through to be seted up on the die holder, the die release hole is close to the one end of shaping chamber is provided with the kicking block, the kicking block is sealed the die release hole, on the die holder in the one end that the die release hole kept away from the kicking block is provided with the drive kicking block orientation shaping chamber one side removes the actuating cylinder.

Through adopting above-mentioned technical scheme, offer the drawing of patterns hole on the die holder, after the lower die sleeve is opened, one side of product still adheres to on the die holder, drives the kicking block through the actuating cylinder and pushes up, alright with the product and disconnect from the die holder, make things convenient for the product drawing of patterns.

Optionally, a conical sealing surface matched with each other is arranged on the lower die holder at one end of the demolding hole, which is close to the molding cavity, and at one end of the top block, which is far away from the molding cavity.

Through adopting above-mentioned technical scheme, set up conical sealed face, can effectively improve the leakproofness between kicking block and the drawing of patterns hole.

Optionally, a plurality of exhaust holes are formed in the lower die holder in a penetrating mode, and the exhaust holes are located on the periphery of the demolding hole.

By adopting the technical scheme, in the injection molding process, air in the molding cavity can be discharged from the exhaust hole.

Optionally, an injection molding opening communicated with the molding cavity is formed in the upper die holder.

By adopting the technical scheme, in the injection molding process, molten liquid can be injected into the molding cavity from the injection molding opening.

In summary, the present utility model includes at least one of the following beneficial technical effects:

1. the lower die sleeve is arranged on the periphery of the lower die holder, when the dies are assembled, the lower die sleeve, the lower die holder and the upper die holder are combined to form a forming cavity, after a product is formed, the upper die holder moves to the side far away from the lower die holder, the product can be left between the lower die holder and the lower die sleeve, then the lower die sleeve is driven by the driving piece to move to the side far away from the upper die holder, so that the product is separated from the lower die sleeve, the product is taken out conveniently, and meanwhile, the ejector pin does not demould the product, so that the qualification rate of the product can be effectively improved;

2. the two lower die sleeves are arranged, and the guide surfaces are arranged on the lower die holder, so that when the die is opened, the lower die sleeves are far away from the center of the lower die holder along the guide surfaces in the opening process, the product is rapidly demolded, and the moving resistance of the lower die sleeves is reduced;

3. the limiting block is arranged on the lower die holder, the stop block is arranged on the lower die sleeve, and in the process of die assembly, the stop block can be abutted against the limiting block to limit the lower die sleeve, so that the position accuracy of the lower die sleeve is improved;

4. through seting up the drawing of patterns hole on the die holder, after the lower die sleeve is opened, one side of product still adheres to on the die holder, drives the kicking block through the actuating cylinder and pushes up, alright disengage the product from the die holder, makes things convenient for the product drawing of patterns.

Drawings

Fig. 1 is a schematic overall structure of an embodiment of the present utility model.

Reference numerals: 1. an upper die holder; 11. an injection molding port; 2. a lower die holder; 21. a guide surface; 22. a guide rail; 23. a limiting block; 24. a demolding hole; 25. a top block; 26. sealing surfaces; 27. a driving cylinder; 28. an exhaust hole; 3. a lower die sleeve; 31. a driving member; 32. a chute; 4. and forming a cavity.

Detailed Description

The present utility model will be described in further detail with reference to fig. 1.

The embodiment of the utility model discloses an injection mold, referring to FIG. 1, comprising an upper module and a lower module, wherein the upper module comprises an upper die holder 1; the lower die set comprises a lower die holder 2, lower die sleeves 3 arranged on two sides of the lower die holder 2 in a sliding manner, and a driving piece 31 for driving the lower die sleeves 3 to move; when the upper die set and the lower die set are assembled, a molding cavity 4 is formed among the upper die holder 1, the lower die holder 2 and the lower die sleeve 3, and an injection molding opening 11 communicated with the molding cavity 4 is formed on the upper die holder 1 in a penetrating manner. During production, molten liquid is poured into the forming cavity 4 from the injection molding opening 11, after the molten liquid is cooled and formed, the injection molding equipment drives the upper die holder 1 to be far away from the lower die holder 2, and the driving piece 31 drives the lower die sleeve 3 to slide downwards, so that a product is demoulded.

The lower die sleeve 3 is provided with two, and opposite sides are respectively arranged at two sides of the lower die holder 2. Inclined guide surfaces 21 are arranged on two sides of the lower die holder 2 corresponding to the lower die sleeve 3, and the guide surfaces 21 are gradually separated towards one side far away from the upper die holder 1. A guide rail 22 with a T-shaped section outline is fixed on the guide surface 21, the guide rail 22 is arranged along the sliding direction of the lower die sleeve 3, and a sliding groove 32 which is in sliding fit with the guide rail 22 is arranged on the lower die sleeve 3 at a position corresponding to the guide rail 22; the driving piece 31 is arranged as an air cylinder, the driving piece 31 is fixed on the injection molding equipment, the axis of the driving piece 31 is parallel to the length direction of the guide rail 22, a piston rod of the driving piece 31 is connected to the lower end of the lower die sleeve 3, and the driving piece 31 drives the lower die sleeve 3 to slide along the guide rail 22.

A limiting block 23 is integrally formed at the upper end of the guide rail 22 on the lower die holder 2, and an avoidance groove is formed on the lower die sleeve 3 corresponding to the limiting block 23, so that a stop block is formed at the position of the lower die sleeve 3, which is slidably mounted on the guide rail 22. When the driving piece 31 drives the lower die sleeve 3 to slide upwards and the stop block is abutted on the limiting block 23, the two lower die sleeves 3 are combined.

A demoulding hole 24 is vertically formed in the center of the lower die holder 2 in a penetrating mode, a top block 25 is arranged at one end, close to the forming cavity 4, of the demoulding hole 24, a conical sealing surface 26 is arranged at one end, close to the forming cavity 4, of the wall of the demoulding hole 24, and the top block 25 is of a conical structure matched with the sealing surface 26. A driving cylinder 27 is arranged at one end of the lower die holder 2 far away from the forming cavity 4, and a piston rod of the driving cylinder 27 is coaxially inserted into the demoulding hole 24 and connected with the top block 25. After the die is opened, the product is adhered to the upper side surface of the lower die holder 2, and the ejector block 25 is driven to eject by the driving cylinder 27, so that the product can be demolded from the lower die holder 2.

A plurality of exhaust holes 28 are formed in the lower die holder 2 in a penetrating mode, and the exhaust holes 28 are distributed on the periphery of the demolding holes 24, so that air can be conveniently exhausted in the injection molding process.

The implementation principle of the injection mold disclosed by the embodiment of the utility model is as follows: through sliding the lower die sleeve 3 on the two sides of the lower die holder 2, and arranging inclined guide surfaces 21 on the two sides of the lower die holder 2, when demoulding, the lower die sleeve 3 is driven by the driving piece 31 to slide obliquely downwards on the two sides of the lower die holder 2, the lower die sleeve 3 can be rapidly separated from a product, friction between the lower die sleeve 3 and the product can be reduced, and therefore the product quality can be effectively improved.

The above embodiments are not intended to limit the scope of the present utility model, so: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.

Claims

1. Injection mold, including last module and lower module, it includes upper die base (1) to go up the module, the lower module includes die holder (2), its characterized in that: the lower die set is characterized by further comprising a lower die sleeve (3), the lower die sleeve (3) is arranged on the periphery of the lower die base (2) in a sliding manner along the direction close to or far away from the upper die base (1), the lower die set is further provided with a driving piece (31) for driving the lower die sleeve (3) to slide, and a forming cavity (4) for forming a product is formed between the upper die base (1) and the lower die base (2) and between the lower die sleeve (3).

2. An injection mold according to claim 1, wherein: the die comprises a die holder (2), a driving piece (31) and lower die sleeves (3), wherein the lower die sleeves (3) are arranged on two sides of the die holder (2) respectively and symmetrically, the driving piece (31) corresponds to the lower die sleeves (3), inclined guide surfaces (21) are arranged on two sides of the lower die holder (2) corresponding to the lower die sleeves (3), and the guide surfaces (21) are far away from the upper die holder (1) and gradually far away from the center of the lower die holder (2).

3. An injection mold according to claim 2, wherein: the guide surface (21) is provided with a guide rail (22) with a T-shaped cross section outline, the guide rail (22) is arranged along the feeding direction of the lower die sleeve (3), the lower die sleeve (3) is provided with a sliding groove (32) corresponding to the guide rail (22), and the guide rail (22) is in sliding fit with the sliding groove (32).

4. An injection mold according to claim 3, wherein: a limiting block (23) is arranged at one end, close to the forming cavity (4), of the guide rail (22) on the lower die holder (2), a stop block is arranged on the lower die sleeve (3) corresponding to the limiting block (23), and when the die is closed, the stop block abuts against the limiting block (23).

5. An injection mold according to claim 1, wherein: the die assembly is characterized in that a die stripping hole (24) is formed in the lower die holder (2) in a penetrating mode, a top block (25) is arranged at one end, close to the forming cavity (4), of the die stripping hole (24), the top block (25) is used for sealing the die stripping hole (24), and a driving cylinder (27) used for driving the top block (25) to move towards one side of the forming cavity (4) is arranged at one end, away from the top block (25), of the die stripping hole (24) in the lower die holder (2).

6. An injection mold as claimed in claim 5, wherein: and a conical sealing surface (26) which is matched with each other is arranged on one end, close to the forming cavity (4), of the demolding hole (24) and one end, far away from the forming cavity (4), of the top block (25) on the lower die holder (2).

7. An injection mold as claimed in claim 5, wherein: a plurality of exhaust holes (28) are formed in the lower die holder (2) in a penetrating mode, and the exhaust holes (28) are located on the periphery side of the demolding hole (24).

8. An injection mold according to claim 1, wherein: an injection molding opening (11) communicated with the molding cavity (4) is formed in the upper die holder (1).