Combined injection mold

Abstract

The utility model discloses a combined injection mold, which is characterized in that a first profiling block, a second profiling block, a first side puller and a second side puller are assembled to form a first spiral bump, a third profiling block, a fourth profiling block, a third side puller and a fourth side puller are assembled to form a second spiral bump, and the first spiral bump and the second spiral bump are matched with each other. A spiral rotating cavity of a product can be filled with the first spiral protruding block and the second spiral protruding block which are in central symmetry, after injection molding is completed, the first side puller, the second side puller, the third side puller and the fourth side puller are demoulded respectively, the structure is simple and compact, product demoulding is reliable, the speed is high, and the production efficiency is improved. The injection molding problem that the outer surface of a product is provided with a spiral groove which spirally ascends can be solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of molds, in particular to a combined injection mold. Background Art

[0002] Injection molds are tools for producing plastic products; they are also tools that give plastic products a complete structure and precise dimensions. Injection molding is a processing method used in mass production of certain parts with complex shapes. Specifically, it refers to the process of injecting heated and melted plastic into the mold cavity under high pressure by an injection molding machine, and then cooling and solidifying to obtain a molded product.

[0003] For some products with simple shapes, the existing injection molding production lines are already very efficient. However, for some special-shaped products, such as products with spiral grooves on the outer surface, and the spiral grooves also have undercut angles, when only a single mold core is used to inject the product, the product cannot be demolded due to the undercut angles of the spiral grooves. Utility Model Content

[0004] The technical problem mainly solved by the utility model is to provide a combined injection mold. The device forms a first spiral protrusion after assembling a first profiling block, a second profiling block, a first side drawer and a second side drawer. The third profiling block, a fourth profiling block, a third side drawer and a fourth side drawer form a second spiral protrusion after assembling. The first spiral protrusion and the second spiral protrusion which are centrally symmetrical can fill the spiral rotating cavity of the product. After the injection molding is completed, the first side drawer, the second side drawer, the third side drawer and the fourth side drawer are demoulded respectively. The utility model has a simple and compact structure, and the product demoulding is reliable and fast, and can solve the injection molding problem of the product having a spiral groove with a spiral rise on the outer surface.

[0005] In order to solve the above technical problems, a technical solution adopted by the utility model is: a combined injection mold, the combined injection mold comprising:

[0006] An upper mold core, a lower mold core, a first side drawer unit, a second side drawer unit and a third side drawer unit, the first side drawer unit and the second side drawer unit are respectively arranged on both sides of the upper mold core, the third side drawer unit is arranged on the front side of the upper mold core, the upper mold core is embedded with an upper mold insert group, and the lower mold core is embedded with a lower mold insert group. The upper mold insert group, the lower mold insert group, the first side drawer unit, the second side drawer unit and the third side drawer unit can form an injection cavity after being assembled with the upper mold core and the lower mold core, and the upper mold core and the lower mold core are provided with a flow channel, and the flow channel is communicated with the injection cavity.

[0007] Preferably, the upper mold insert group includes a first upper mold insert and a second upper mold insert, and the lower mold insert group includes a first lower mold insert and a second lower mold insert, the first upper mold insert is provided with a first profiling block, the second upper mold insert is provided with a second profiling block, the first lower mold insert is provided with a third profiling block, and the second lower mold insert is provided with a fourth profiling block.

[0008] Preferably, the first side drawer unit includes a first side drawer member and a second side drawer member, and the second side drawer unit includes a third side drawer member and a fourth side drawer member;

[0009] The first side drawer includes a first side drawer block and a first side drawer, the second side drawer includes a second side drawer block and a second side drawer, the third side drawer includes a third side drawer block and a third side drawer, and the fourth side drawer includes a fourth side drawer block and a fourth side drawer.

[0010] Preferably, the first profiling block, the second profiling block, the first side drawer and the second side drawer can form a first spiral convex block after being assembled;

[0011] The third profiling block, the fourth profiling block, the third side drawer and the fourth side drawer can form a second spiral convex block after being assembled;

[0012] The first spiral protrusion and the second spiral protrusion are centrally symmetrically arranged.

[0013] Preferably, a first limiting groove is provided on a side of the first upper mold insert away from the second upper mold insert, and the first limiting groove is used to limit the displacement of the first side drawer;

[0014] A second limiting groove is provided on a side of the third upper mold insert away from the fourth upper mold insert, and the second limiting groove is used to limit the displacement of the third side drawer.

[0015] Preferably, the first side drawer, the second side drawer, the third side drawer and the fourth side drawer are all configured as side drawers made of rigid material.

[0016] The beneficial effects of the utility model are as follows:

[0017] The mold forms a first spiral protrusion after assembling a first profiling block, a second profiling block, a first side drawer and a second side drawer, and forms a second spiral protrusion after assembling a third profiling block, a fourth profiling block, a third side drawer and a fourth side drawer. The first spiral protrusion and the second spiral protrusion which are centrally symmetrical can fill the spiral rotating cavity of the product. After the injection molding is completed, the first side drawer, the second side drawer, the third side drawer and the fourth side drawer are demoulded respectively. The structure is simple and compact, the product demoulding is reliable and fast, and the injection molding problem of the outer surface of the product with a spiral groove with a spiral rise can be solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a schematic diagram of a partial structure of the utility model;

[0020] Figure 3 The utility model is a schematic diagram of the structure of the first side drawer unit, the second side drawer unit, the upper mold insert group and the lower mold insert group. Figure 1 ;

[0021] Figure 4 yes Figure 3 A partial enlarged schematic diagram of

[0022] Figure 5 The utility model is a schematic diagram of the structure of the first side drawer unit, the second side drawer unit, the upper mold insert group and the lower mold insert group. Figure 2 ;

[0023] Figure 6 yes Figure 5 A partial enlarged schematic diagram of

[0024] Figure 7 It is a schematic diagram of the first side drawer unit and the second side drawer unit of the utility model.

[0025] The parts in the accompanying drawings are marked as follows:

[0026] 100, upper mold core; 101, upper mold insert assembly; 1011, first upper mold insert; 10111, first profiling block; 10112, first limiting groove; 1012, second upper mold insert; 10121, second profiling block;

[0027] 200, lower die core; 201, lower die insert assembly; 2011, first lower die insert; 20111, third profiling block; 20112, second limiting groove; 2012, second lower die insert; 20121, fourth profiling block;

[0028] 300, first side drawer unit; 301, first side drawer member; 3011, first side drawer block; 3012, first side drawer; 302, second side drawer member; 3021, second side drawer block; 3022, second side drawer;

[0029] 400, second side drawer unit; 401, third side drawer; 4011, third side drawer block; 4012, third side drawer; 402, fourth side drawer; 4021, fourth side drawer block; 4022, fourth side drawer;

[0030] 500, third side drawer unit;

[0031] 600, injection molding cavity;

[0032] 700, flow channel;

[0033] 800, first spiral protrusion;

[0034] 900. Second spiral protrusion. DETAILED DESCRIPTION

[0035] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0036] Example: Refer to Figure 1-Figure 7 As shown, a combined injection mold, the combined injection mold comprises:

[0037] An upper mold core 100, a lower mold core 200, a first side drawer unit 300, a second side drawer unit 400 and a third side drawer unit 500, wherein the first side drawer unit 300 and the second side drawer unit 400 are respectively arranged on both sides of the upper mold core 100, and the third side drawer unit 500 is arranged on the front side of the upper mold core 100, the upper mold core 100 is embedded with an upper mold insert group 101, and the lower mold core 200 is embedded with a lower mold insert group 201, and the upper mold insert group 101, the lower mold insert group 201, the first side drawer unit 300, the second side drawer unit 400 and the third side drawer unit 500 can form an injection cavity 600 after being assembled with the upper mold core 100 and the lower mold core 200, and the upper mold core 100 and the lower mold core 200 are provided with a flow channel 700, and the flow channel 700 is communicated with the injection cavity 600.

[0038] Further, the upper mold insert group 101 includes a first upper mold insert 1011 and a second upper mold insert 1012, and the lower mold insert group 201 includes a first lower mold insert 2011 and a second lower mold insert 2012, the first upper mold insert 1011 is provided with a first shaping block 10111, the second upper mold insert 1012 is provided with a second shaping block 10121, the first lower mold insert 2011 is provided with a third shaping block 20111, and the second lower mold insert 2012 is provided with a fourth shaping block 20121.

[0039] The first side drawer unit 300 includes a first side drawer member 301 and a second side drawer member 302, and the second side drawer unit 400 includes a third side drawer member 401 and a fourth side drawer member 402;

[0040] The first side drawer 301 includes a first side drawer block 3011 and a first side drawer 3012, the second side drawer 302 includes a second side drawer block 3021 and a second side drawer 3022, the third side drawer 401 includes a third side drawer block 4011 and a third side drawer 4012, and the fourth side drawer 402 includes a fourth side drawer block 4021 and a fourth side drawer 4022.

[0041] The first profiling block 10111, the second profiling block 10121, the first side drawer 3012 and the second side drawer 3022 can form a first spiral protrusion 800 after being assembled;

[0042] The third profiling block 20111, the fourth profiling block 20121, the third side drawer 4012 and the fourth side drawer 4022 can form a second spiral protrusion 900 after being assembled;

[0043] The first spiral protrusion 800 and the second spiral protrusion 900 are centrally symmetrically arranged.

[0044] The mold forms a first spiral protrusion 800 by assembling a first profiling block 10111, a second profiling block 10121, a first side drawer 3012 and a second side drawer 3022. The mold forms a second spiral protrusion 900 by assembling a third profiling block 20111, a fourth profiling block 20121, a third side drawer 4012 and a fourth side drawer 4022. The first spiral protrusion 800 and the second spiral protrusion 900 which are centrally symmetrical can fill the spiral rotating cavity of the product. After the injection molding is completed, the first side drawer 3012, the second side drawer 3022, the third side drawer 4012 and the fourth side drawer 4022 are demoulded respectively. The structure is simple and compact, the product demoulding is reliable and fast, and the injection molding problem of the outer surface of the product with a spiral groove with a spiral rise can be solved.

[0045] In addition, a first limiting groove 10112 is provided on a side of the first upper mold insert 1011 away from the second upper mold insert 1012, and the first limiting groove 10112 is used to limit the displacement of the first side drawer 301;

[0046] A second limiting groove 20112 is provided on a side of the third upper mold insert away from the fourth upper mold insert, and the second limiting groove 20112 is used to limit the displacement of the third side drawer 401.

[0047] It should be noted that the first side drawer 3012, the second side drawer 3022, the third side drawer 4012 and the fourth side drawer 4022 are all configured as side drawers made of rigid material. Using side drawers made of rigid material can increase the service life of the side drawers.

[0048] The working principle of the utility model is as follows:

[0049] 1. After the upper mold core 100, the lower mold core 200, the first side draw unit 300, the second side draw unit 400 and the third side draw unit 500 are assembled, injection molding is performed into the injection cavity 600 through the runner 700.

[0050] 2. After the injection molding is completed, the first side drawer block 3011 drives the first side drawer 3012 to demold, the second side drawer block 3021 drives the second side drawer 3022 to demold, the third side drawer block 4011 drives the third side drawer 4012 to demold, the fourth side drawer block 4021 drives the fourth side drawer 4022 to demold, and finally the upper mold core 100 drives the first upper mold insert 1011 and the second upper mold insert 1012, and the lower mold core 200 drives the third upper mold insert and the fourth upper mold insert to realize demolding.

[0051] The above are only embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A combined injection mold, characterized in that: The combined injection mold includes: An upper mold core, a lower mold core, a first side drawer unit, a second side drawer unit and a third side drawer unit, wherein the first side drawer unit and the second side drawer unit are respectively arranged on both sides of the upper mold core, and the third side drawer unit is arranged on the front side of the upper mold core, an upper mold insert group is embedded in the upper mold core, and a lower mold insert group is embedded in the lower mold core, and the upper mold insert group, the lower mold insert group, the first side drawer unit, the second side drawer unit and the third side drawer unit can form an injection cavity after being assembled with the upper mold core and the lower mold core, and the upper mold core and the lower mold core are provided with a flow channel, and the flow channel is communicated with the injection cavity; The upper mold insert group includes a first upper mold insert and a second upper mold insert, and the lower mold insert group includes a first lower mold insert and a second lower mold insert, the first upper mold insert is provided with a first profiling block, the second upper mold insert is provided with a second profiling block, the first lower mold insert is provided with a third profiling block, and the second lower mold insert is provided with a fourth profiling block; The first side drawer unit includes a first side drawer member and a second side drawer member, and the second side drawer unit includes a third side drawer member and a fourth side drawer member; The first side drawer comprises a first side drawer block and a first side drawer, the second side drawer comprises a second side drawer block and a second side drawer, the third side drawer comprises a third side drawer block and a third side drawer, and the fourth side drawer comprises a fourth side drawer block and a fourth side drawer; The first profiling block, the second profiling block, the first side drawer and the second side drawer can form a first spiral convex block after being assembled; The third profiling block, the fourth profiling block, the third side drawer and the fourth side drawer can form a second spiral convex block after being assembled; The first spiral protrusion and the second spiral protrusion are centrally symmetrically arranged.

2. A combined injection mold according to claim 1, characterized in that: A first limiting groove is provided on a side of the first upper mold insert away from the second upper mold insert, wherein the first limiting groove is used to limit the displacement of the first side drawer; A second limiting groove is provided on a side of the third upper mold insert away from the fourth upper mold insert, and the second limiting groove is used to limit the displacement of the third side drawer.

3. A combined injection mold according to claim 2, characterized in that: The first side drawer, the second side drawer, the third side drawer and the fourth side drawer are all configured to be side drawers made of rigid material.

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