Anti-bonding injection mold

Abstract

The utility model provides an anti-bonding injection mold and belongs to the technical field of molds. The anti-bonding injection mold comprises an upper mold and a lower mold, and is characterized in that the lower mold is movably connected to the bottom of the upper mold, the upper mold comprises an upper mold body, an injection molding opening and a Teflon coating, a product body is movably connected to the interior of the upper mold body, and the lower mold comprises a mold table base, a lower mold table and a bottom connecting table; the comprehensive demolding assembly is arranged in the bottom connecting table and comprises a demolding air pump, a connecting pipe, an adjusting rotating rod, a connecting cable and a top building block. And the auxiliary assembly is arranged in the lower die table, and the auxiliary assembly comprises a movable cavity, a limiting base, a normally-closed spring and an air hole. The mold has the advantages that two demolding modes of ejection and pneumatic demolding can be provided for demolding, and meanwhile, bonding breakthrough points are relieved.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to an anti-adhesion injection mold. Background Art

[0002] With the advancement of technology, the injection mold industry is constantly innovating and progressing. New materials, processes, and designs are constantly emerging, significantly improving the performance and quality of injection molds. As a tool for producing plastic products, injection molds inject melted plastic material into a mold, where it solidifies after cooling to achieve the desired shape. This allows for the mass production of complex, precisely sized plastic products, such as automotive parts and appliance housings. Its high efficiency, precision, and sophistication have earned it widespread application across various fields.

[0003] Existing injection molds are prone to sticking during the demolding process, making it difficult to demold or even damaging the product. Furthermore, the air outlet of the pneumatic demolding system easily leaves marks on the inner wall of the product, which affects the product's aesthetics and makes it difficult to meet existing needs. Therefore, this application provides an anti-sticking injection mold. Utility Model Content

[0004] In order to solve the above technical problems, the present invention proposes an injection mold that can provide two demoulding methods, namely ejection and pneumatic demoulding, and at the same time increase the anti-sticking function to alleviate the bonding breakthrough point.

[0005] The technical solution of the present utility model is achieved as follows:

[0006] An anti-sticking injection mold comprises an upper mold and a lower mold, wherein the lower mold is movably connected to the bottom of the upper mold, the upper mold comprises an upper mold body, an injection port, and a Teflon coating, the upper mold body is movably connected to the product body, and the lower mold comprises a mold base, a lower mold base, and a bottom connecting platform, and further comprises:

[0007] A comprehensive demoulding assembly is provided inside the bottom connecting platform and includes a demoulding air pump, a connecting pipe, an adjusting rotary rod, a connecting rope, and a top building block;

[0008] An auxiliary component is arranged inside the lower mold platform, and the auxiliary component includes a movable cavity, a limiting base, a normally closed spring and an air hole.

[0009] Furthermore, the injection port is opened at the center of the top of the upper mold body, and the Teflon coating prevents the product body from sticking after the injection molding is completed.

[0010] Furthermore, the lower mold platform is fixedly connected to the center position of the mold platform base, the bottom connecting platform is detachably connected to the bottom of the mold platform base, a main air duct is opened inside the lower mold platform, secondary air ducts are opened on both sides of the main air duct, and a connecting column is movably connected inside the mold platform base.

[0011] Furthermore, there are two groups of main air ducts and they are symmetrically distributed inside the lower mold platform, there are two groups of secondary air ducts and they are symmetrically distributed outside the main air ducts, and there are multiple groups of connecting columns and they are evenly distributed inside the mold platform base.

[0012] Furthermore, the demoulding air pump is fixedly connected to the outside of the bottom connecting platform, the connecting pipe is fixedly connected to the outside of the demoulding air pump, the adjusting rotary rod passes through and is movably connected to the inside of the connecting pipe, one end of the connecting rope is fixedly connected to the outside of the adjusting rotary rod, the top building block is fixedly connected to the outside of the end of the connecting rope away from the adjusting rotary rod, an air outlet slot is opened on the outside of the top building block, and the connecting pipe is fixedly connected to the end of the main air duct.

[0013] Furthermore, the top building block and the top port of the main air duct are embedded with each other and flush with the top of the main air duct, and the top notch of the air outlet slot is partially spaced from the top port of the main air duct.

[0014] Furthermore, the movable cavity is embedded in the secondary air duct port, the limit base is fixedly connected to the outside of the movable cavity, one end of the normally closed spring is fixedly connected to the outside of the limit base, and the air hole is opened outside the movable cavity and communicates with the inside.

[0015] Furthermore, the normally closed spring is fixedly connected to the inside of the secondary air duct at one end away from the movable cavity, the limiting bases are in multiple groups and are evenly distributed outside the movable cavity, the air holes are in multiple groups and are evenly distributed outside the movable cavity, and there is a certain distance between the air holes and the secondary air duct port.

[0016] The utility model has the following beneficial effects:

[0017] 1. By setting up the upper mold, lower mold and comprehensive demoulding components, the device can provide partial ejection and demoulding efficiency for the mold through air pressure during the demoulding process, while injecting gas into the product and the inner wall of the mold to start the ejection effect, which greatly improves the demoulding effect of the device.

[0018] 2. By setting up auxiliary components, if the device encounters adhesion and is difficult to demould during the demoulding process, the secondary air duct will be pressurized inside and the mold side will be ejected synchronously and pneumatically demoulded, thereby improving the demoulding effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall appearance of the utility model;

[0020] Figure 2 This utility model Figure 1 Exploded diagram of the internal structure;

[0021] Figure 3 This is a side sectional view of the internal structure of the upper mold of the utility model;

[0022] Figure 4 This is an anatomical diagram of the internal structure of the lower mold of the utility model;

[0023] Figure 5 This is a side sectional view of the overall structure of the start-up and demoulding components of the utility model;

[0024] Figure 6 It is a schematic diagram of the overall appearance of the auxiliary component of the utility model.

[0025] Among them: 1. Upper mold; 101. Upper mold body; 102. Injection port; 103. Teflon coating; 2. Lower mold; 201. Mold base; 202. Lower mold; 203. Connecting column; 204. Bottom connecting platform; 205. Main air duct; 206. Secondary air duct; 3. Integrated demoulding assembly; 301. Demolding air pump; 302. Connecting pipe; 303. Adjusting rotary rod; 304. Connecting rope; 305. Top building block; 306. Air outlet slot; 4. Auxiliary assembly; 401. Movable cavity; 402. Limiting base; 403. Normally closed spring; 404. Air hole; 5. Product body. DETAILED DESCRIPTION

[0026] The following is a clear and complete description of the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] Example 1

[0028] See Figures 1 to 6 As shown, the utility model provides an anti-sticking injection mold, including an upper mold 1 and a lower mold 2. The lower mold 2 is movably connected to the bottom of the upper mold 1. The upper mold 1 includes an upper mold body 101, an injection port 102, and a Teflon coating 103. The upper mold body 101 is movably connected to the product body 5. The lower mold 2 includes a mold base 201, a lower mold base 202, and a bottom connecting base 204, and also includes:

[0029] The integrated demoulding assembly 3 is arranged inside the bottom connecting platform 204 and includes a demoulding air pump 301, a connecting pipe 302, an adjusting rotary rod 303, a connecting rope 304 and a top building block 305;

[0030] Auxiliary component 4 is arranged inside the lower mold platform 202, and the auxiliary component 4 includes a movable cavity 401, a limiting base 402, a normally closed spring 403 and an air hole 404.

[0031] Specifically, during use, the lower mold 2 and the upper mold 1 are connected to each other through the connecting column 203, and the raw material is injected between the Teflon coating 103 and the lower mold base 202 through the injection port 102, and then injection molding is performed. During this process, the top block 305 and the surface of the movable cavity 401 are highly flush with the surface of the lower mold base 202 and are tightly fitted to ensure that no marks are left on the inner wall of the product body 5 in the area;

[0032] Then, the demoulding air pump 301 is turned on to increase the pressure and inject air into the main air duct 205 through the connecting pipe 302. The top building block 305 is lifted up by the air pressure, and the lifting of the top building block 305 provides partial demoulding efficiency. After the air outlet slot 306 exceeds the top of the lower mold platform 202, air is injected into the product body 5 and the lower mold platform 202 and pneumatic demoulding is performed. Synchronous demoulding is performed in two ways to achieve a better demoulding effect.

[0033] Example 2

[0034] See Figures 1 to 6 It is shown that, based on Example 1, the injection port 102 is opened at the top center of the upper mold body 101, the Teflon coating 103 prevents the product body 5 from sticking after the injection molding is completed, the lower mold platform 202 is fixedly connected to the center of the mold platform base 201, the bottom connecting platform 204 is detachably connected to the bottom of the mold platform base 201, a main air duct 205 is opened inside the lower mold platform 202, and secondary air ducts 206 are opened on both sides of the main air duct 205. The mold platform base 201 is movably connected with connecting columns 203. There are two groups of main air ducts 205 and they are symmetrically distributed inside the lower mold platform 202. There are two groups of secondary air ducts 206 and they are symmetrically distributed outside the main air duct 205. There are multiple groups of connecting columns 203 and they are evenly distributed inside the mold platform base 201.

[0035] By making the above arrangement, when a product with strong adhesion is difficult to demould, the top building block 305 is difficult to push out, causing the air outlet slot 306 to be out of the plane of the lower mold platform 202. The demoulding air pump 301 is continuously inflated to continuously increase the pressure inside the secondary air duct 206 connected to the main air duct 205. A breakthrough point is created by pushing out to the side, inflating the ejectable part and alleviating the adhesion of the remaining areas. After the relief effect is achieved, the normally closed spring 403 is stored and the operation is stopped due to the reduction in air pressure, ensuring smooth demoulding of the device.

[0036] Example 3

[0037] See Figures 1 to 6As shown in Example 2, the demoulding air pump 301 is fixedly connected to the outside of the bottom connecting platform 204, the connecting pipe 302 is fixedly connected to the outside of the demoulding air pump 301, the adjusting rotary rod 303 passes through and is movably connected to the inside of the connecting pipe 302, one end of the connecting cable 304 is fixedly connected to the outside of the adjusting rotary rod 303, the top building block 305 is fixedly connected to the outside of the end of the connecting cable 304 away from the adjusting rotary rod 303, an air outlet slot 306 is provided on the outside of the top building block 305, the connecting pipe 302 is fixedly connected to the end of the main air duct 205, and the top building block 305 is embedded with the top port of the main air duct 205 and is flush with its top;

[0038] The top notch of the air outlet slot 306 is partially distanced from the top port of the main air duct 205, the movable cavity 401 is interlocked and connected to the port of the secondary air duct 206, the limiting base 402 is fixedly connected to the outside of the movable cavity 401, one end of the normally closed spring 403 is fixedly connected to the outside of the limiting base 402, the air hole 404 is opened outside the movable cavity 401 and is interconnected with the interior, the normally closed spring 403 is fixedly connected to the inside of the secondary air duct 206 at one end away from the movable cavity 401, there are multiple groups of limiting bases 402 and they are evenly distributed outside the movable cavity 401, there are multiple groups of air holes 404 and they are evenly distributed outside the movable cavity 401, and there is a partial distance between the air holes 404 and the port of the secondary air duct 206.

[0039] By making the above arrangement and observing the condition of the inner wall of the product body 5 that has been successfully demolded, if the inner wall of the product body 5 is not damaged and the demolding effect is good, no changes are required. If the inner wall of the product body 5 is deformed, the adjusting rod 303 is rotated to reel in the connecting rope 304 to increase the tension. By adjusting the ejection height of the top building block 305, the ejection and pneumatic demolding effects of the device are ensured while reducing the damage to the inner wall of the product body 5 caused by the ejection demolding and the top building block 305, thereby greatly improving the safety of the device.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An anti-sticking injection mold, comprising an upper mold (1) and a lower mold (2), characterized in that: The lower mold (2) is movably connected to the bottom of the upper mold (1); the upper mold (1) comprises an upper mold body (101), an injection port (102) and a Teflon coating (103); the upper mold body (101) is movably connected to the product body (5); the lower mold (2) comprises a mold base (201), a lower mold base (202) and a bottom connecting base (204); and further comprises: A comprehensive demoulding assembly (3), the comprehensive demoulding assembly (3) is arranged inside the bottom connecting platform (204), and the comprehensive demoulding assembly (3) includes a demoulding air pump (301), a connecting pipe (302), an adjusting rotary rod (303), a connecting rope (304) and a top building block (305); An auxiliary component (4) is arranged inside the lower die table (202), and the auxiliary component (4) includes a movable cavity (401), a limiting base (402), a normally closed spring (403) and an air hole (404).

2. The anti-sticking injection mold according to claim 1, characterized in that: The injection port (102) is opened at the top center of the upper mold body (101), and the Teflon coating (103) prevents the product body (5) from sticking after the injection molding is completed.

3. The anti-sticking injection mold according to claim 1, characterized in that: The lower die platform (202) is fixedly connected to the center of the die platform base (201); the bottom connecting platform (204) is detachably connected to the bottom of the die platform base (201); a main air duct (205) is provided inside the lower die platform (202); secondary air ducts (206) are provided on both sides of the main air duct (205); and a connecting column (203) is movably connected inside the die platform base (201).

4. The anti-sticking injection mold according to claim 3, characterized in that: The main air ducts (205) are provided in two groups and are symmetrically distributed inside the lower mold platform (202); the secondary air ducts (206) are provided in two groups and are symmetrically distributed outside the main air ducts (205); and the connecting columns (203) are provided in multiple groups and are evenly distributed inside the mold platform base (201).

5. The anti-sticking injection mold according to claim 1, characterized in that: The demoulding air pump (301) is fixedly connected to the outside of the bottom connecting platform (204), the connecting pipe (302) is fixedly connected to the outside of the demoulding air pump (301), the adjusting rotary rod (303) passes through and is movably connected to the inside of the connecting pipe (302), one end of the connecting rope (304) is fixedly connected to the outside of the adjusting rotary rod (303), the top building block (305) is fixedly connected to the outside of one end of the connecting rope (304) away from the adjusting rotary rod (303), an air outlet slot (306) is provided on the outside of the top building block (305), and the connecting pipe (302) is fixedly connected to the end of the main air duct (205).

6. The anti-sticking injection mold according to claim 5, characterized in that: The top building block (305) and the top port of the main air duct (205) are interlocked and flush with the top of the main air duct (205), and the top notch of the air outlet slot (306) is partially spaced from the top port of the main air duct (205).

7. The anti-sticking injection mold according to claim 1, characterized in that: The movable cavity (401) is engaged and connected to the port of the secondary air duct (206), the limiting base (402) is fixedly connected to the outside of the movable cavity (401), one end of the normally closed spring (403) is fixedly connected to the outside of the limiting base (402), and the air hole (404) is opened outside the movable cavity (401) and is interconnected with the inside.

8. The anti-sticking injection mold according to claim 7, characterized in that: The normally closed spring (403) is fixedly connected to the interior of the secondary air duct (206) at one end away from the active cavity (401), the limiting bases (402) are present in multiple groups and are evenly distributed outside the active cavity (401), the air holes (404) are present in multiple groups and are evenly distributed outside the active cavity (401), and there is a partial distance between the air holes (404) and the end portion of the secondary air duct (206).

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