Self-core-pulling mold of threaded product

Abstract

The utility model discloses a self-core-pulling mold for a threaded product. The self-core-pulling mold comprises a bottom plate, a lower mold, an upper mold and a demolding mechanism, a lifting groove is formed in the top of the bottom plate; the lower mold comprises a lower mold base, a lower mold core, a demolding sleeve and a demolding rod, the bottom of the demolding rod is rotationally arranged in the lifting groove through a thread, the demolding sleeve rotationally sleeves the outer side of the demolding rod through a thread, and a forming thread is arranged on the outer side of the top of the demolding sleeve; the upper mold comprises an upper mold base, an upper mold sleeve and an injection molding opening; a mold cavity is defined by the lower mold core, the top of the demolding sleeve, the top of the demolding rod and the upper mold sleeve; the demolding mechanism comprises a demolding motor and a driving gear, and the demolding motor drives the demolding sleeve to rotate through the driving gear. The demoulding device is suitable for demoulding products with threads, and the demoulding process is convenient and stable.

Description

Technical Field

[0001] The utility model belongs to the technical field of injection molds, and in particular relates to a self-core-pulling mold for threaded products. 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 molds are also a processing method used in mass production of parts, mainly used in the industrial field. The injection mold process is to inject the heated and molten material into the mold cavity under high pressure, and after cooling and solidification, a molded product is obtained.

[0003] When existing injection molds are producing products, especially those with threads on the edges, the contact area with the mold cavity increases due to the structure of the threads. At the same time, the threads also have a certain limiting function, which makes it difficult to demold the product. The general direct demolding method is likely to damage the thread structure. Utility Model Content

[0004] The utility model provides a self-core-pulling die for threaded products to solve the above technical problems.

[0005] The solution adopted by the utility model to achieve its technical effect is:

[0006] A self-pulling core mold for a threaded product, comprising a base plate, a lower mold, an upper mold and a demolding mechanism; a lifting groove is provided on the top of the base plate; the lower mold comprises a lower mold base, a lower mold core, a demolding sleeve and a demolding rod; the lower mold base is arranged on the top of the base plate; the lower mold core is arranged on the top of the lower mold base; the demolding sleeve is rotatably arranged in the lower mold base, and the top of the demolding sleeve extends out from the middle of the lower mold core; a molding thread is provided on the outer side of the top of the demolding sleeve; the bottom of the demolding rod is rotatably arranged in the lifting groove by a thread, and the middle part of the demolding rod is rotatably arranged on the inner side of the demolding sleeve by a thread, and the top of the demolding rod extends out from the top of the demolding sleeve; the upper mold comprises an upper mold base, an upper mold sleeve and an injection port ; The upper mold base is arranged on the top of the lower mold base; the upper mold sleeve is arranged on the bottom of the upper mold base, and the upper mold sleeve is arranged on the top of the lower mold core, and the upper mold sleeve is arranged on the top of the demolding sleeve and the outside of the top of the demolding rod; the lower mold core, the demolding sleeve, the demolding rod and the upper mold sleeve form a mold cavity; the injection port is arranged on the top of the upper mold base; the injection port is connected to the mold cavity; the demolding mechanism includes a demolding motor and a driving gear; the demolding motor is arranged on one side of the lower mold base; the driving gear is rotatably arranged in the lower mold base, and the driving gear is arranged on the outside of the demolding sleeve; the driving gear is transmission-connected to the driving end of the demolding motor.

[0007] Preferably, a lifting block is installed on the top of the bottom plate; and the lifting slot is arranged on the lifting block.

[0008] Preferably, support rods are arranged on the top of four sides of the lifting block; and the tops of the support rods are supported on the bottom of the demoulding sleeve.

[0009] Preferably, a bearing is arranged in the lower die seat; and the bearing rolling sleeve is arranged on the outer side of the demoulding sleeve.

[0010] Preferably, the driving end of the demoulding motor is connected to the driving gear through a belt.

[0011] The beneficial effects of the utility model are as follows: the threaded structure of the product is separated from the demoulding rod by the demoulding sleeve, and the demoulding rod maintains the original lifting and lowering demoulding without damaging the threaded structure; a molding thread is arranged on the outer side of the demoulding sleeve to form the threaded structure of the product, and the demoulding mechanism drives the demoulding sleeve to rotate along the thread direction during demoulding, so that the demoulding sleeve is separated from the product and the threads therebetween rotate along the gap at the same time without causing damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is an overall schematic diagram of the mold disclosed in the embodiment of the utility model;

[0013] Figure 2 It is a schematic diagram of removing the upper die base of the mold disclosed in the embodiment of the utility model;

[0014] Figure 3 It is a schematic diagram of the demoulding mechanism and the internal components of the lower mold base disclosed in the embodiment of the utility model.

[0015] Label description: 1-base plate, 2-lower mold base, 3-lower mold core, 4-mold ejection sleeve, 5-mold ejection rod, 6-molding thread, 7-upper mold sleeve, 8-injection port, 9-mold ejection motor, 10-driving gear, 11-lifting block, 12-support rod, 13-bearing, 14-belt. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model. It should be noted that when an element is referred to as "fixed on" or "set on" another element, it can be directly on the other element or there may be a centering element at the same time. When an element is referred to as "connected to" another element, it can be directly connected to the other element or there may be a centering element at the same time. When an element is referred to as being "fixedly connected to" another element, it can be a common fixed connection method such as welding, bolting or gluing.

[0017] Please refer to Figure 1-3 The preferred embodiment of the utility model discloses a self-pulling core mold for threaded products, including a bottom plate 1, a lower mold, an upper mold and a demoulding mechanism; the top of the bottom plate 1 is provided with a lifting groove; the lower mold includes a lower mold base 2, a lower mold core 3, a demoulding sleeve 4 and a demoulding rod 5; the lower mold base 2 is arranged on the top of the bottom plate 1; the lower mold core 3 is arranged on the top of the lower mold base 1; the demoulding sleeve 4 is rotatably arranged in the lower mold base 2, and the top of the demoulding sleeve 4 extends out from the middle of the lower mold core 3; a forming thread 6 is arranged on the top outer side of the demoulding sleeve 4; the bottom of the demoulding rod 5 is rotatably arranged in the lifting groove by thread, and the middle part of the demoulding rod 5 is rotatably arranged on the inner side of the demoulding sleeve 4 by thread, and the top of the demoulding rod 5 extends out from the top of the demoulding sleeve 4; the upper mold includes an upper mold base, an upper mold sleeve 7 and injection port 8; the upper mold base is arranged at the top of the lower mold base 2; the upper mold sleeve 7 is arranged at the bottom of the upper mold base, and the upper mold sleeve 7 is arranged at the top of the lower mold core 3, and the upper mold sleeve 7 is sleeved on the top of the demolding sleeve 4 and the outside of the top of the demolding rod 5; the lower mold core 3, the demolding sleeve 4, the demolding rod 5 and the upper mold sleeve 7 enclose a mold cavity; the injection port 8 is arranged at the top of the upper mold base; the injection port 8 is connected to the mold cavity; the demolding mechanism includes a demolding motor 9 and a driving gear 10; the demolding motor 9 is arranged on one side of the lower mold base 2; the driving gear 10 is rotatably arranged in the lower mold base 2, and the driving gear 10 is arranged on the outside of the demolding sleeve 4; the driving gear 10 is transmission connected to the driving end of the demolding motor 9.

[0018] Specifically, a lifting block 11 is installed on the top of the base plate 1 ; and the lifting slot is arranged on the lifting block 11 .

[0019] Specifically, support rods 12 are arranged on the top of the four sides of the lifting block 11 ; the top of the support rods 12 is supported on the bottom of the demoulding sleeve 4 .

[0020] Specifically, a bearing 13 is disposed in the lower die seat 2 ; the bearing 13 is rollingly sleeved on the outer side of the demoulding sleeve 4 .

[0021] Specifically, the driving end of the demoulding motor 9 is transmission-connected to the driving gear 10 via a belt 14 .

[0022] It can be seen from the above description that the utility model is suitable for demoulding products with threads, and the demoulding process is convenient and stable.

[0023] The preferred embodiments of the present invention are described in detail above in conjunction with the drawings in the specification. It should be noted that the protection scope of the present invention includes but is not limited to the above embodiments. The specific structures disclosed in the drawings in the specification are only preferred embodiments of the present invention. Technical personnel in the field can also develop other embodiments on this basis. Any simple deformation or equivalent substitution that does not deviate from the innovative concept of the present invention is covered by the present invention and belongs to the protection scope of the present invention.

Claims

1. A self-core-pulling mold for threaded products, characterized in that: include: Bottom plate; a lifting slot is provided on the top of the bottom plate; The lower mold comprises a lower mold base, a lower mold core, a demoulding sleeve and a demoulding rod; the lower mold base is arranged on the top of the bottom plate; the lower mold core is arranged on the top of the lower mold base; the demoulding sleeve is rotatably arranged in the lower mold base, and the top of the demoulding sleeve extends out from the middle of the lower mold core; a molding thread is arranged on the outer side of the top of the demoulding sleeve; the bottom of the demoulding rod is rotatably arranged in the lifting groove by thread, and the middle part of the demoulding rod is rotatably arranged on the inner side of the demoulding sleeve by thread, and the top of the demoulding rod extends out from the top of the demoulding sleeve; An upper mold; the upper mold comprises an upper mold base, an upper mold sleeve and an injection port; the upper mold base is arranged at the top of the lower mold base; the upper mold sleeve is arranged at the bottom of the upper mold base, and the upper mold sleeve is arranged at the top of the lower mold core, and the upper mold sleeve is arranged on the top of the demoulding sleeve and the outer side of the top of the demoulding rod; the lower mold core, the demoulding sleeve, the demoulding rod and the upper mold sleeve enclose a mold cavity; the injection port is arranged at the top of the upper mold base; the injection port is communicated with the mold cavity; Demolding mechanism; the demoulding mechanism includes a demoulding motor and a driving gear; the demoulding motor is arranged on one side of the lower mold base; the driving gear is rotatably arranged in the lower mold base, and the driving gear is arranged on the outside of the demoulding sleeve; the driving gear is transmission-connected to the driving end of the demoulding motor.

2. A self-core-pulling mold for threaded products according to claim 1, characterized in that: A lifting block is installed on the top of the bottom plate; the lifting slot is arranged on the lifting block.

3. A self-core-pulling mold for threaded products according to claim 2, characterized in that: Support rods are arranged on the top of the four sides of the lifting block; the tops of the support rods are supported on the bottom of the demoulding sleeve.

4. A self-core-pulling mold for threaded products according to claim 1, characterized in that: A bearing is arranged in the lower die seat; and the bearing rolling sleeve is arranged on the outer side of the demoulding sleeve.

5. The self-core-pulling mold for threaded products according to claim 1, characterized in that: The driving end of the demoulding motor is connected to the driving gear through a belt.

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