A punch force adjustable rubber sleeve processing human demould and its injection molding process

Abstract

The application discloses a punch force adjustable rubber sleeve processing human demould and an injection molding process thereof, which comprises an upper mould and a lower mould, a punch force adjusting device is arranged between the upper mould and the lower mould, a convenient demoulding device is arranged on the inner wall of the lower mould, first rectangular grooves are formed on the two sides of the outer surface of the upper mould, and second rectangular grooves are formed on the two sides of the outer surface of the lower mould. In the scheme, the lower pressing block can drive the receiving block to move downward, and then drive the first dovetail sliding rod to move in the double-head cylinder, and at the same time, the double-head cylinder can slide on the outer surface of the second dovetail sliding rod, so that the first spring and the second spring can be deformed, the impact pressure can be segmented buffered, and the impact force can be adjusted.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of molds, more particularly, it relates to a stamping force adjustable human demolding mold for rubber sleeve processing and an injection molding process thereof. BACKGROUND

[0002] The rubber sleeve is a kind of rubber sealing product, also known as a dust cover, and is a cover-shaped rubber accessory for protecting sliding surfaces and preventing dust and sand, which can be divided into compressible and fixed types. The former has a bellows shape and can be compressed and stretched, and can be divided into straight cylinder, pagoda and irregular shapes. The latter is used in situations where the sealed body has no travel change, so the cover body is relatively static during operation. In the production process of the rubber sleeve, a human demolding mold is needed to manufacture and shape the product.

[0003] However, like most human demolding molds in the prior art, the following problems still exist in actual use:

[0004] 1. During the pressing process, the pressing force is not easy to control, and the impact force is often too large or too small, resulting in stamping failure, and thus the product fails to be shaped in the mold;

[0005] 2. After the product is formed in the lower mold, it often needs to be taken out, but direct contact with the mold can cause burns to the hands due to the high temperature of the mold, and the force of manual removal is not easy to control, which can easily damage the mold, which is very inconvenient;

[0006] 3. The vibration force of the upper mold can cause the threaded rod and other components on the mold to shake, which can further risk disengagement, which is not conducive to the stability of the stamping process;

[0007] In view of the above problems, it is of great significance to research a stamping force adjustable human demolding mold for rubber sleeve processing and an injection molding process thereof. SUMMARY

[0008] In view of the deficiencies of the prior art, the present application aims to provide a stamping force adjustable human demolding mold for rubber sleeve processing and an injection molding process thereof, which can adjust the pressing force and make the threaded rod and other components stable and not easy to loosen during the pressing process, and can demold the mold after the finished product.

[0009] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0010] The utility model provides a punch strength adjustable human demoulding tool for rubber sleeve processing, including upper die and lower die, be provided with punch strength adjusting device between the upper die and lower die, the inner wall of lower die is provided with convenient demoulding device, the both sides of the outer surface of upper die are equipped with first rectangular groove, the both sides of the outer surface of lower die are equipped with second rectangular groove, punch strength adjusting device includes first threaded rod and anti loosening structure, first threaded rod is connected with the inner wall of upper die threadedly, first threaded rod sets up in the inner wall of first rectangular groove, one side of the inner wall of first rectangular groove is equipped with third rectangular groove, the outer surface of first threaded rod is rotatably connected with moving block through bearing, the inner wall of third rectangular groove is slidably connected with swallow tail sliding block, the outer surface of swallow tail sliding block is fixedly connected with the outer surface of moving block.

[0011] Through adopting the technical scheme, under the rotation of the first threaded rod, the first threaded rod drives the moving block to move downward, and then drives the swallow tail sliding block to slide in the third rectangular groove, so that the first threaded rod can drive the pressing block to move, and then cooperate with the receiving block on the lower die, so that the punching force in the punching process is buffered, thereby playing a role of adjusting the strength.

[0012] Further, the bottom end of the first threaded rod is fixedly connected with a pressing block, the outer surface top of the pressing block is fixedly connected with a fixed rod, the end away from the pressing block of the fixed rod is fixedly connected with the moving block, the top end of the first threaded rod is fixedly connected with a circular block, and the outer surface top of the circular block is fixedly connected with a limiting rectangular block.

[0013] Through the above technical scheme, under the action of the fixed rod, the pressing block and the moving block are fixed, so that the moving block can limit the pressing block when moving, so that the pressing block can move downward along the first threaded rod, and then cooperate with the receiving block.

[0014] Further, the inner wall bottom of the second rectangular groove is fixedly connected with a first swallow tail sliding rod, the top end of the first swallow tail sliding rod is slidably connected with a double-headed cylindrical body, the top end of the double-headed cylindrical body is slidably connected with a second swallow tail sliding rod, the end away from the double-headed cylindrical body of the second swallow tail sliding rod is fixedly connected with a receiving block, the outer surface of the first swallow tail sliding rod is sleeved with a first spring, the both ends of the first spring are fixedly connected with the bottom of the double-headed cylindrical body and the inner wall of the second rectangular groove respectively, the outer surface of the second swallow tail sliding rod is sleeved with a second spring, the both ends of the second spring are fixedly connected with the receiving block and the top of the double-headed cylindrical body respectively, and the outer surface of the double-headed cylindrical body is provided with a clamping hole.

[0015] Through the adoption of the above technical scheme, under the action of the double-end cylinder and the first dovetail slide bar and the second dovetail slide bar, the downward pressure can be segmented buffered, so as to adjust the degree of the downward pressure, and avoid the stamping failure caused by the excessive or insufficient downward pressure.

[0016] Further, the outer surface of the lower mold is fixedly connected with a U-shaped block, the inner wall of the U-shaped block is threadedly connected with a second threaded rod, one end of the second threaded rod is fixedly connected with a first operating block, the end of the second threaded rod away from the first operating block is rotatably connected with an auxiliary plate through a bearing, the outer surface of the auxiliary plate is fixedly connected with a limiting rod on one side, the limiting rod is arranged on the inner wall of the U-shaped block, the outer surface of the auxiliary plate is fixedly connected with a clamping block on one side, and the size and shape of the outer surface of the clamping block are matched with the size and shape of the inner wall of the clamping hole.

[0017] Through the adoption of the above technical scheme, under the action of the double-end cylinder and the first dovetail slide bar and the second dovetail slide bar, the downward pressure can be segmented buffered, so as to adjust the degree of the downward pressure, and avoid the stamping failure caused by the excessive or insufficient downward pressure.

[0018] Further, the anti-loosening structure comprises a third dovetail slide bar, a first circular groove is formed in the top of the outer surface of the upper mold, the third dovetail slide bar is arranged in the inner wall of the first circular groove, a cylindrical block is slidably connected to the top end of the third dovetail slide bar, a third spring is sleeved on the outer surface of the third dovetail slide bar, and the two ends of the third spring are fixedly connected with the outer surface of the cylindrical block and the inner wall of the first circular groove respectively, a horizontal plate is arranged on the top of the outer surface of the cylindrical block, a rectangular frame is fixedly connected to the bottom of the outer surface of the horizontal plate, and the size and shape of the inner wall of the rectangular frame are matched with the size and shape of the outer surface of the limiting rectangular block.

[0019] Through the adoption of the above technical scheme, under the action of the double-end cylinder and the first dovetail slide bar and the second dovetail slide bar, the downward pressure can be segmented buffered, so as to adjust the degree of the downward pressure, and avoid the stamping failure caused by the excessive or insufficient downward pressure.

[0020] Further, the convenient demolding device comprises a first gear, the first gear is rotatably connected to the bottom of the lower mold through a bearing, an operating rod is fixedly connected to the bottom of the outer surface of the first gear, four second gears are meshingly connected to the outer surface of the first gear, a third threaded rod is fixedly connected to the top of the outer surface of each second gear, a threaded cylinder is threadedly connected to the outer surface of the third threaded rod, four second circular grooves are formed in the top of the outer surface of the lower mold, and the third threaded rod and the threaded cylinder are arranged in the inner wall of the second circular groove.

[0021] Through adoption of the above technical scheme, under the action of the first gear and the second gear, the first gear can be rotated to simultaneously drive the four second gears to rotate, thereby facilitating uniform force control, and enabling the product to be demolded from the lower mold.

[0022] Further, a limiting groove is formed on one side of the inner wall of the second circular groove, the outer surface of the threaded cylinder is fixedly connected with a limiting block, the limiting block is arranged on the inner wall of the limiting groove, a ejection groove is formed on the top of the lower mold, and an ejection block is arranged on the top of the ejection groove and fixedly connected with the outer surface of the threaded cylinder.

[0023] Through adoption of the above technical scheme, under the action of the limiting block and the limiting groove, the threaded cylinder can move on the outer surface of the third threaded rod, and the product can be ejected from the lower mold in cooperation with the ejection block.

[0024] The injection molding process of the stamping force adjustable rubber sleeve processing human demolding mold comprises the following steps:

[0025] S1, first, the stamping force adjusting device on the upper mold and the lower mold is adjusted, when a larger stamping force is required, the circular block is rotated at this time, so that the first threaded rod can move downward, thereby driving the moving block and the dovetail sliding block to move along the direction of the third rectangular groove, thereby driving the downward moving block to move downward, and stopping when it moves to the appropriate position, at this time, the first operating block is rotated, so that the first operating block drives the second threaded rod to rotate, thereby making the second threaded rod drive the auxiliary plate and the clamping block to move, thereby making the clamping block clamped into the clamping hole, at this time, the double-head cylindrical body is limited.

[0026] S2, when the upper mold stamps the lower mold, the downward moving block contacts the supporting block, thereby making the supporting block drive the second dovetail sliding rod to slide in the double-head cylindrical body, and the second spring is deformed, so that the downward impact force can be weakened, if the impact force does not need to be weakened or needs to be weakened again, the downward moving block position can be adjusted and the double-head cylindrical body can be limited to achieve the purpose.

[0027] S3, at the same time, the injection pipe is used to inject into the lower mold, so that the product is formed by being pressed in the lower mold, at this time, the formed product needs to be taken out, the operating rod at the bottom of the lower mold is rotated first, so that the operating rod drives the first gear to rotate, the first gear rotates to drive the second gear to rotate, thereby driving the third threaded rod to rotate, the third threaded rod rotates to drive the threaded cylinder to move, thereby making the limiting block slide in the limiting groove, the threaded cylinder moves at the same time to drive the ejection block to slide in the ejection groove, thereby ejecting the product.

[0028] S4, finally, the ejected product is taken down, and is placed on a drying rack to dry and cool down, so that the product is taken down when cooled to room temperature, the corners of the product are trimmed and polished, and then the shaped product is obtained.

[0029] In summary, the present application has the following advantages:

[0030] 1、In the scheme, by setting the lower pressing block, double-head cylinder, first dovetail slide rod, second dovetail slide rod and receiving block, the lower pressing block can drive the receiving block to move downward, and in turn drive the first dovetail slide rod to move in the double-head cylinder, and at the same time can drive the double-head cylinder to slide on the outer surface of the second dovetail slide rod, so that the first spring and the second spring can be deformed, the impact pressure can be segmented buffered, and the impact force can be adjusted.

[0031] 2、By setting the third dovetail slide rod, rectangular frame, cylindrical block and limiting rectangular block, the limiting rectangular block can be clamped into the rectangular frame, and in turn can cooperate with the cylindrical block and the third dovetail slide rod, so that the limiting rectangular block is closer to the rectangular frame, and the limiting rectangular block can be limited, so that the first threaded rod can be limited to prevent loosening due to vibration;

[0032] 3、By setting the first gear, the second gear, the threaded cylinder, the third threaded rod and the ejector block, the first gear can drive the second gear to rotate, and in turn can drive the third threaded rod to rotate, so that the third threaded rod drives the threaded cylinder to move upward, and in turn can drive the ejector block to eject the finished product from the lower mold, avoiding damage to the finished product caused by manual demolding. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 is a schematic diagram of the three-dimensional structure of the present application;

[0034] Figure 2 is a schematic diagram of the three-dimensional structure of the upper mold of the present application;

[0035] Figure 3 is a schematic diagram of the three-dimensional structure of the lower mold of the present application;

[0036] Figure 4 is a schematic diagram of the three-dimensional structure of the U-shaped block of the present application;

[0037] Figure 5 is a schematic diagram of the three-dimensional structure of the first gear of the present application;

[0038] Figure 6 is a schematic diagram of the three-dimensional structure of the third threaded rod of the present application.

[0039] In the figure: 1, the upper mold; 2, the lower mold; 3, the stamping force degree adjusting device; 31, the first threaded rod; 32, the round block; 33, the moving block; 34, the dovetail sliding block; 35, the limiting rectangular block; 36, the anti-loosening structure; 361, the third dovetail sliding rod; 362, the cylindrical block; 363, the third spring; 364, the horizontal plate; 365, the rectangular frame; 37, the fixed rod; 38, the lower pressing block; 39, the first dovetail sliding rod; 310, the double-head cylindrical body; 311, the second dovetail sliding rod; 312, the first spring; 313, the second spring; 314, the receiving block; 315, the U-shaped block; 316, the second threaded rod; 317, the auxiliary plate; 318, the clamping block; 319, the limiting rod; 320, the first operating block; 4, the convenient demolding device; 41, the first gear; 42, the operating rod; 43, the second gear; 44, the third threaded rod; 45, the threaded cylinder; 46, the limiting block; 47, the ejection block; 5, the first rectangular groove; 6, the second rectangular groove; 7, the third rectangular groove; 8, the clamping hole; 9, the first circular groove; 10, the second circular groove; 11, the limiting groove; 12, the ejection groove. DETAILED DESCRIPTION

[0040] EMBODIMENT

[0041] The following will be described in detail with reference to the accompanying drawings. Figures 1-6 The present application will be further described in detail.

[0042] Please refer to Figures 1-5 The present application provides a technical scheme: a stamping force degree adjustable rubber sleeve processing manual demolding mold, which comprises an upper mold 1 and a lower mold 2, a stamping force degree adjusting device 3 is arranged between the upper mold 1 and the lower mold 2, a convenient demolding device 4 is arranged on the inner wall of the lower mold 2, first rectangular grooves 5 are formed on the outer surfaces of the upper mold 1 on both sides, second rectangular grooves 6 are formed on the outer surfaces of the lower mold 2 on both sides, the stamping force degree adjusting device 3 comprises a first threaded rod 31 and an anti-loosening structure 36, the first threaded rod 31 is threadedly connected with the inner wall of the upper mold 1, the first threaded rod 31 is arranged on the inner wall of the first rectangular groove 5, a third rectangular groove 7 is formed on one side of the inner wall of the first rectangular groove 5, a moving block 33 is rotatably connected with the outer surface of the first threaded rod 31 through a bearing, a dovetail sliding block 34 is slidably connected with the inner wall of the third rectangular groove 7, and the outer surface of the dovetail sliding block 34 is fixedly connected with the outer surface of the moving block 33.

[0043] In the embodiment: by arranging the first threaded rod 31, the moving block 33, the dovetail sliding block 34 and the third rectangular groove 7, the first threaded rod 31 can drive the moving block 33 to move, and then the dovetail sliding block 34 can be driven to move, the lower pressing block 38 will be driven by the moving block 33 to move downward, the dovetail sliding block 34 can limit the moving block 33, the moving block 33 can limit the lower pressing block 38, and then the lower pressing block 38 can move downward conveniently, cooperate with the receiving block 314, and play a role of adjusting the stamping force degree.

[0044] As Figure 2 , Figure 3 and Figure 4 shown, the bottom end of the first threaded rod 31 is fixedly connected with a pressing block 38, the outer surface top of the pressing block 38 is fixedly connected with a fixed rod 37, the end of the fixed rod 37 away from the pressing block 38 is fixedly connected with the moving block 33, the top end of the first threaded rod 31 is fixedly connected with a round block 32, the outer surface top of the round block 32 is fixedly connected with a limiting rectangular block 35, the inner wall bottom of the second rectangular groove 6 is fixedly connected with a first dovetail sliding rod 39, the top end of the first dovetail sliding rod 39 is slidingly connected with a double-head cylindrical body 310, the top end of the double-head cylindrical body 310 is slidingly connected with a second dovetail sliding rod 311, the end of the second dovetail sliding rod 311 away from the double-head cylindrical body 310 is fixedly connected with a receiving block 314, the outer surface of the first dovetail sliding rod 39 is sleeved with a first spring 312, the two ends of the first spring 312 are fixedly connected with the bottom of the double-head cylindrical body 310 and the inner wall of the second rectangular groove 6 respectively, the outer surface of the second dovetail sliding rod 311 is sleeved with a second spring 313, the two ends of the second spring 313 are fixedly connected with the receiving block 314 and the top of the double-head cylindrical body 310 respectively, the outer surface of the double-head cylindrical body 310 is provided with a clamping hole 8, the outer surface of the lower mold 2 is fixedly connected with a U-shaped block 315, the inner wall of the U-shaped block 315 is threadedly connected with a second threaded rod 316, one end of the second threaded rod 316 is fixedly connected with a first operation block 320, the end of the second threaded rod 316 away from the first operation block 320 is rotatably connected with an auxiliary plate 317 through a bearing, one side of the outer surface of the auxiliary plate 317 is fixedly connected with a limiting rod 319, the limiting rod 319 is arranged on the inner wall of the U-shaped block 315, one side of the outer surface of the auxiliary plate 317 is fixedly connected with a clamping block 318, the outer surface of the clamping block 318 is matched in size and shape with the inner wall of the clamping hole 8, the anti-loosening structure 36 includes a third dovetail sliding rod 361, the top of the outer surface of the upper mold 1 is provided with a first circular groove 9, the third dovetail sliding rod 361 is arranged on the inner wall of the first circular groove 9, the top end of the third dovetail sliding rod 361 is slidingly connected with a cylindrical block 362, the outer surface of the third dovetail sliding rod 361 is sleeved with a third spring 363, the two ends of the third spring 363 are fixedly connected with the outer surface of the cylindrical block 362 and the inner wall of the first circular groove 9 respectively, the top of the outer surface of the cylindrical block 362 is provided with a horizontal plate 364, the bottom of the outer surface of the horizontal plate 364 is fixedly connected with a rectangular frame 365, the inner wall of the rectangular frame 365 is matched in size and shape with the outer surface of the limiting rectangular block 35;

[0045] In the embodiment, the first dovetail sliding rod 39 and the second dovetail sliding rod 311 can slide in the double-head cylinder 310, and then the first spring 312 and the second spring 313 can be deformed, the lower pressing block 38 and the receiving block 314 can be matched, the segmented buffering of the impact force can be performed, the cooperation of the clamping block 318 and the clamping hole 8 can make the segmented buffering be performed individually, the impact degree can be adjusted, the first threaded rod 31 can be limited under the action of the rectangular frame 365 and the limiting rectangular block 35, the first threaded rod 31 can be prevented from shaking due to the vibration force, and the movement of the lower pressing block 38 and other components can be avoided.

[0046] As shown in Figure 4 and Figure 5 Convenient demolding device 4 includes first gear 41, first gear 41 and bottom of lower mold 2 is rotatably connected through bearing, the outer surface of first gear 41 is fixedly connected with operating rod 42, the outer surface of first gear 41 is meshingly connected with four second gears 43, the outer surface top of second gear 43 is fixedly connected with third threaded rod 44, the outer surface of third threaded rod 44 is threadedly connected with threaded cylinder 45, the outer surface top of lower mold 2 is provided with four second circular grooves 10, third threaded rod 44 and threaded cylinder 45 are arranged in the inner wall of second circular groove 10, the inner wall of second circular groove 10 is provided with limiting groove 11 on one side, the outer surface of threaded cylinder 45 is fixedly connected with limiting block 46, limiting block 46 is arranged in the inner wall of limiting groove 11, the top of lower mold 2 is provided with ejection groove 12, the top of ejection groove 12 is provided with ejection block 47, the outer surface of ejection block 47 is fixedly connected with the outer surface of threaded cylinder 45;

[0047] In the embodiment, the first gear 41 can drive the second gear 43 and the third threaded rod 44 to rotate, and then drive the threaded cylinder 45 to transmit, so that the limiting block 46 can move in the limiting groove 11, and the ejection block 47 can slide in the ejection groove 12, so that the formed product can be ejected from the lower mold 2.

[0048] An injection molding process of a rubber sleeve processing stamping die with adjustable stamping force, the injection molding process comprising the following steps:

[0049] S1, first adjust the stamping force degree adjusting device 3 on the upper die 1 and the lower die 2, when a larger stamping force is required, at this time the circular block 32 can be rotated, so that the first threaded rod 31 can move downward, and then drive the moving block 33 and the dovetail slider 34 to move along the direction of the third rectangular groove 7, and then drive the lower pressing block 38 to move downward, stop when it moves to the appropriate position, at this time rotate the first operating block 320, so that the first operating block 320 drives the second threaded rod 316 to rotate, and then the second threaded rod 316 drives the auxiliary plate 317 and the clamping block 318 to move, and then the clamping block 318 is clamped into the clamping hole 8, at this time the double-headed cylindrical body 310 is limited.

[0050] S2, when the upper die 1 stamps the lower die 2, the lower pressing block 38 will contact the bearing block 314, and then the bearing block 314 drives the second dovetail sliding rod 311 to slide in the double-headed cylindrical body 310, and drives the second spring 313 to deform, so that the impact force can be reduced, if the impact force is not required to be reduced or the impact force is required to be reduced again, only the position of the lower pressing block 38 is adjusted and the double-headed cylindrical body 310 is limited.

[0051] S3, at the same time, the injection pipe is used to inject into the lower die 2, so that the product is formed by being pressed in the lower die 2, at this time the formed product needs to be taken out, first rotate the operating rod 42 at the bottom of the lower die 2, so that the operating rod 42 drives the first gear 41 to rotate, the first gear 41 rotates to drive the second gear 43 to rotate, and then drives the third threaded rod 44 to rotate, the third threaded rod 44 rotates to drive the threaded cylinder 45 to move, and then the limiting block 46 slides in the limiting groove 11, at the same time the threaded cylinder 45 moves to drive the ejection block 47 to slide in the ejection groove 12, and then the product is ejected.

[0052] S4, finally, the ejected product is taken down and placed on the airing rack to air dry and cool down, so that the product is taken down when it cools to room temperature, the corners of the product are cut and polished, and then the formed product is obtained.

[0053] Working principle: in use, first rotate the first operating block 320, so that the first operating block 320 drives the second threaded rod 316 movement, in turn, the second threaded rod 316 drives the auxiliary plate 317 and the clamping block 318 movement, so that the clamping block 318 can be clamped into the card hole 8, at this time by rotating the round block 32, so that the round block 32 drives the first threaded rod 31 downward movement, the first threaded rod 31 movement will drive the moving block 33 and the dovetail slider 34 in the third rectangular groove 7 sliding, the moving block 33 movement will drive the lower pressing block 38 movement at the same time, when the lower pressing block 38 moves to the appropriate position, at this time rotate the horizontal plate 364, so that the rectangular frame 365 on the horizontal plate 364 and the limiting rectangular block 35 clamping, at this time under the action of the third spring 363, make the rectangular frame 365 and the limiting rectangular block 35 close tightly, in turn, to the first threaded rod 31 play limiting effect, when stamping, the lower pressing block 38 contacts the bearing block 314, and drives the bearing block 314 downward movement, in turn, drives the second dovetail slide rod 311 in the double head cylinder 310 sliding, in turn, to buffer the impact force, product forming, rotate the operating rod 42, so that the operating rod 42 drives the first gear 41 rotation, the first gear 41 rotation will drive the second gear 43 and the third threaded rod 44 rotation, in turn, drives the threaded cylinder 45 and the limiting block 46 along the limiting groove 11 movement, so that the ejection block 47 in the ejection slot 12 movement, in turn, to the product ejection.

[0054] The specific embodiment is only an explanation of the present application, which is not a limitation of the present application. Those skilled in the art can make modifications to the embodiment without creative contribution after reading the specification, but as long as it is within the scope of the claims of the present application, it is protected by the patent law.

Claims

1. A demoulding die for processing a rubber sleeve with adjustable punching force, comprising an upper die (1) and a lower die (2), characterized in that: A punching force regulating device (3) is provided between the upper mold (1) and the lower mold (2), and a convenient demoulding device (4) is provided on the inner wall of the lower mold (2). First rectangular grooves (5) are provided on both sides of the outer surface of the upper mold (1), and second rectangular grooves (6) are provided on both sides of the outer surface of the lower mold (2). The punching force regulating device (3) comprises a first threaded rod (31) and an anti-loosening structure (36). The first threaded rod (31) is threadedly connected to the inner wall of the upper mold (1). The first threaded rod (31) is provided on the inner wall of the first rectangular groove (5). A third rectangular groove (7) is provided on one side of the inner wall of the first rectangular groove (5). The outer surface of the first threaded rod (31) is rotatably connected to a moving block (33) through a bearing. The inner wall of the third rectangular groove (7) is slidably connected to a dovetail slider (34). The outer surface of the dovetail slider (34) is fixedly connected to the outer surface of the moving block (33). The bottom end of the first threaded rod (31) is fixedly connected to a lower pressing block (38), the top of the outer surface of the lower pressing block (38) is fixedly connected to a fixed rod (37), and the end of the fixed rod (37) away from the lower pressing block (38) is fixedly connected to the moving block (33), the top of the first threaded rod (31) is fixedly connected to a round block (32), the top of the outer surface of the round block (32) is fixedly connected to a limited position rectangular block (35), the bottom of the inner wall of the second rectangular groove (6) is fixedly connected to a first dovetail slide rod (39), the top of the first dovetail slide rod (39) is slidably connected to a double-headed cylindrical body (310), and the top of the double-headed cylindrical body (310) is slidably connected to the first dovetail slide rod (39). Two dovetail slide rods (311), one end of the second dovetail slide rod (311) away from the double-headed cylinder (310) is fixedly connected to a receiving block (314), the outer surface of the first dovetail slide rod (39) is sleeved with a first spring (312), the two ends of the first spring (312) are respectively fixedly connected to the bottom of the double-headed cylinder (310) and the inner wall of the second rectangular groove (6), the outer surface of the second dovetail slide rod (311) is sleeved with a second spring (313), the two ends of the second spring (313) are respectively fixedly connected to the receiving block (314) and the top of the double-headed cylinder (310), and the outer surface of the double-headed cylinder (310) is provided with a clamping hole (8).

2. The demoulding die for processing a rubber sleeve with adjustable punching force according to claim 1, characterized in that: The outer surface of the lower mold (2) is fixedly connected to a U-shaped block (315), the inner wall of the U-shaped block (315) is threadedly connected to a second threaded rod (316), one end of the second threaded rod (316) is fixedly connected to a first operating block (320), and the end of the second threaded rod (316) away from the first operating block (320) is rotatably connected to an auxiliary plate (317) via a bearing, one side of the outer surface of the auxiliary plate (317) is fixedly connected to a limiting rod (319), and the limiting rod (319) is arranged on the inner wall of the U-shaped block (315), and one side of the outer surface of the auxiliary plate (317) is fixedly connected to a clamping block (318), and the size and shape of the outer surface of the clamping block (318) are adapted to the size and shape of the inner wall of the clamping hole (8).

3. The demoulding die for processing a rubber sleeve with adjustable punching force according to claim 2, characterized in that: The anti-loosening structure (36) includes a third dovetail slide (361), a first circular groove (9) is provided at the top of the outer surface of the upper mold (1), the third dovetail slide (361) is arranged on the inner wall of the first circular groove (9), the top of the third dovetail slide (361) is slidably connected to a cylindrical block (362), the outer surface of the third dovetail slide (361) is sleeved with a third spring (363), the two ends of the third spring (363) are respectively fixedly connected to the outer surface of the cylindrical block (362) and the inner wall of the first circular groove (9), a transverse plate (364) is provided at the top of the outer surface of the cylindrical block (362), and a rectangular frame (365) is fixedly connected to the bottom of the outer surface of the transverse plate (364), and the size and shape of the inner wall of the rectangular frame (365) are adapted to the size and shape of the outer surface of the limiting rectangular block (35).

4. The demoulding die for processing a rubber sleeve with adjustable punching force according to claim 3, characterized in that: The convenient demoulding device (4) comprises a first gear (41), the first gear (41) being rotatably connected to the bottom of the lower mold (2) via a bearing, an operating rod (42) being fixedly connected to the bottom of the outer surface of the first gear (41), four second gears (43) being meshedly connected to the outer surface of the first gear (41), a third threaded rod (44) being fixedly connected to the top of the outer surface of the second gear (43), a threaded barrel (45) being threadedly connected to the outer surface of the third threaded rod (44), four second circular grooves (10) being opened at the top of the outer surface of the lower mold (2), and the third threaded rod (44) and the threaded barrel (45) being both arranged on the inner wall of the second circular groove (10).

5. The demoulding die for processing a rubber sleeve with adjustable punching force according to claim 4, characterized in that: A limiting groove (11) is provided on one side of the inner wall of the second circular groove (10); a limiting block (46) is fixedly connected to the outer surface of the threaded barrel (45); the limiting block (46) is arranged on the inner wall of the limiting groove (11); an ejection groove (12) is provided on the top of the lower mold (2); an ejection block (47) is provided on the top of the ejection groove (12); and the outer surface of the ejection block (47) is fixedly connected to the outer surface of the threaded barrel (45).

6. An injection molding process for processing a rubber sleeve with adjustable punching force and using a demolding tool as claimed in claim 5, characterized in that: The injection molding process comprises the following steps: S1. First, adjust the punching force adjustment device (3) on the upper mold (1) and the lower mold (2). When punching force is required, rotate the round block (32) to make the first threaded rod (31) move downward, thereby driving the moving block (33) and the dovetail slider (34) to move along the direction of the third rectangular groove (7), thereby driving the lower pressing block (38) to move downward, and stop when it moves to a suitable position. At this time, rotate the first operating block (320) to make the first operating block (320) drive the second threaded rod (316) to rotate, thereby making the second threaded rod (316) drive the auxiliary plate (317) and the clamping block (318) to move, thereby making the clamping block (318) clamped into the clamping hole (8), and the double-headed cylinder (310) is now limited; S2. When the upper mold (1) punches the lower mold (2), it drives the lower pressing block (38) to contact the receiving block (314), and then the receiving block (314) drives the second dovetail slide (311) to slide in the double-headed cylinder (310), driving the second spring (313) to deform, thereby reducing the downward pressure. If the impact force does not need to be reduced or needs to be reduced again, it is only necessary to adjust the position of the lower pressing block (38) and limit the double-headed cylinder (310). S3. At the same time, the injection molding process is carried out into the lower mold (2) through the injection molding tube, so that the product is pressed downward in the lower mold (2). At this time, the molded product needs to be taken out. First, the operating rod (42) at the bottom of the lower mold (2) is rotated, so that the operating rod (42) drives the first gear (41) to rotate. The rotation of the first gear (41) drives the second gear (43) to rotate, and then drives the third threaded rod (44) to rotate. The rotation of the third threaded rod (44) drives the threaded barrel (45) to move, and then the limit block (46) slides in the limit groove (11). When the threaded barrel (45) moves, it drives the ejection block (47) to slide in the ejection groove (12), thereby ejecting the product; S4. Finally, the ejected product is removed and placed on a drying rack to dry and cool. When the product cools to room temperature, it is removed and the edges and corners of the product are trimmed and polished to obtain a formed product.

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