Manufacturing process of sealing cover

Abstract

The invention provides a manufacturing process of a sealing cover, which enables a sealing rubber mat and a cover body of the sealing cover to be stably and reliably assembled and ensures efficient manufacturing of the whole sealing cover. Sealing rubber pads produced in batches are manufactured in advance according to the corresponding form of the sealing end face of a preset sealing cover for standby application, and then the following procedures are carried out: a, pad adding: raw material sheets of a cover body are fed into stamping and stretching equipment in a stepping mode along a production line, and sealing rubber pad feeding equipment is arranged at the front end of the stamping and stretching equipment; the sealing rubber mat is reliably centered and placed in the center position area of the raw material piece through a transfer mechanical arm, and the sealing rubber mat is arranged upwards; b, stretching: stretching the raw material sheet of the cover body through an upper and lower die mechanism, so that the top surface and the outer ring surface of the sealing cover are distinguished; c, pre-rolling: pre-bending the bottom ring position, far away from the top surface, of the outer ring surface, so that the bottom ring of the outer ring surface forms an inner bent ring; d, coiling: coiling the inner bending ring; and e, claw lifting: carrying out claw lifting processing on the coiled wire.

Description

Technical Field

[0001] The present invention relates to the technical field of sealing cover manufacturing, in particular to a manufacturing process of a sealing cover. Background Art

[0002] When manufacturing the existing sealing cap, a sealing end face is formed by coating the inner end face of the barrel body with sealant. During the glue coating process, a long curing time is required, which makes the manufacturing efficiency of the sealing cap low. In addition, due to the fluidity of the glue itself, there will be differences in the molding of the sealing end face, which may cause the sealing end face of the entire sealing cap to fail to seal, resulting in defective products. To this end, the existing technology prepares a sealing gasket in advance, and after the deep drawing is completed, a pre-bending operation is performed on the bottom of the outer ring, and then the gasket is added, which makes it unnecessary to apply liquid glue during the production process of the sealing cover, thereby making the shape of the sealing gasket complete and reliable; however, when operating this process, it is necessary to flip the cover body before adding the gasket, and because the cover body has been wound before adding the gasket, when the sealing gasket is inserted into the inner cavity of the cover body, the sealing gasket will touch the pre-rolled position, which will cause deformation of the pre-rolled position, resulting in deformation of the claws during subsequent winding or clawing, causing the entire sealing cover to be scrapped; for this reason, although a sealing gasket has been developed, how to reliably assemble the sealing gasket and the sealing cover is still a technical problem that needs to be solved urgently. Summary of the Invention

[0003] In view of the above problems, the present invention provides a manufacturing process for a sealing cover, which enables a sealing gasket and a cover body of the sealing cover to be assembled stably and reliably, and ensures efficient manufacturing of the entire sealing cover.

[0004] A manufacturing process for a sealing cover is characterized in that a batch of sealing rubber gaskets are manufactured in advance according to the corresponding shape of the sealing end surface of the sealing cover, and then the following steps are performed:

[0005] a. Padding: The raw material sheet of the cover is fed into the stamping and stretching equipment along the production line. A sealing pad feeding device is set at the front end of the stamping and stretching equipment. The sealing pad is reliably centered on the center area of ​​the raw material sheet through the transfer robot, and the sealing pad is set upward;

[0006] b. Stretching: The raw material sheet of the cover body is stretched through the upper and lower die mechanisms, so that the top surface and the outer ring surface of the sealing cover are separated. During the stretching process, the upper die pressing head is provided with a contoured ring groove on the outer ring of the sealing gasket, so that the sealing gasket and the upper die pressing head are combined to form an integral upper die for the stretching operation, so that the top surface and the outer ring surface of the sealing cover are separated, and the top surface is arranged at the bottom at this time;

[0007] c Pre-rolling: The bottom ring of the outer ring surface away from the top surface is pre-bent so that the bottom ring of the outer ring surface forms an inner bending ring;

[0008] d. Winding: Wind the inner bending ring;

[0009] e Clawing: The winding wire is subjected to clawing processing.

[0010] The method is further characterized in that: before the padding step, a preheating station is pre-set to preheat the raw material sheet to 65° C. to 75° C.

[0011] The sealing rubber pad is sucked and transported by the suction cup of the manipulator, and after being aligned and positioned, the sealing rubber pad is pressed onto the corresponding position of the preheated raw material sheet. Thereafter, the sealing rubber pad is adhered to the surface of the raw material sheet by being heated, so that the sealing rubber pad and the raw material sheet become an integrated structure;

[0012] During the bonding process between the sealing gasket and the raw material sheet, the manipulator applies force continuously for 0.2s to 0.3s through the suction cup to ensure that the sealing gasket is reliably bonded to the raw material sheet through pressure on the top and thermal bonding on the bottom.

[0013] The sealing gasket is an annular structure with a central hole, which ensures low cost and good sealing effect.

[0014] The stamping and stretching equipment has a one-die, two-cavity structure, and the manipulator transfers two sets of sealing rubber pads at a time through the suction cup, which improves the processing efficiency of the manipulator;

[0015] In order to ensure that the sealing gasket and the cover body are fully fitted together, after step e, step f of drying is added to dry the entire sealing cover.

[0016] After adopting the present invention, the raw material sheet of the sealing cover is first centered to set the sealing gasket, and then the stretching operation is carried out. During the stretching process, the upper mold pressure head is provided with a contoured ring groove corresponding to the raised outer ring of the sealing gasket of the raw material sheet, which enables the sealing gasket and the upper mold pressure head to be combined to form an integral upper mold for the stretching operation, thereby ensuring that the contour of the sealing cover after stretching is stable and reliable. Moreover, since the sealing gasket is preset, it does not need to be assembled subsequently, and only pre-rolling, winding, and air claws need to be carried out in sequence. The pre-rolling, winding, and air claws will not affect the appearance, and they can be formed in sequence on the cap making machine, so that the sealing gasket and the cover body of the sealing cover are stably and reliably assembled, and the efficient production of the entire sealing cover is ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the process structure of the present invention. DETAILED DESCRIPTION

[0018] A manufacturing process of a sealing cover, see Figure 1The sealing gaskets are pre-produced in batches according to the corresponding shape of the sealing end surface of the preset sealing cover. The sealing gaskets are annular structures with a central hole to ensure low cost and good sealing effect. Then the following steps are carried out:

[0019] a. Padding: The raw material sheet of the cover is fed into the stamping and stretching equipment along the production line. A sealing pad feeding device is set at the front end of the stamping and stretching equipment. The sealing pad is reliably centered on the center area of ​​the raw material sheet through the transfer robot, and the sealing pad is set upward;

[0020] In a specific implementation, before the padding step is performed, a preheating station is pre-set to preheat the raw material sheet to 65° C. to 75° C.

[0021] The sealing gasket is sucked and transported by the suction cup of the robot. After alignment, the sealing gasket is pressed onto the corresponding position of the preheated raw material sheet. Then, the sealing gasket is adhered to the surface of the raw material sheet by heating, so that the sealing gasket and the raw material sheet become an integrated structure.

[0022] During the bonding process between the sealing gasket and the raw material sheet, the robot continuously applies force through the suction cup for 0.2s to 0.3s to ensure that the sealing gasket is reliably bonded to the raw material sheet through top pressure and bottom thermal bonding.

[0023] b. Stretching: The raw material sheet of the cover body is stretched through the upper and lower die mechanisms, so that the top surface and the outer ring surface of the sealing cover are separated. During the stretching process, the upper die pressing head is provided with a contoured ring groove on the outer ring of the sealing gasket, so that the sealing gasket and the upper die pressing head are combined to form an integral upper die for the stretching operation, so that the top surface and the outer ring surface of the sealing cover are separated, and the top surface is arranged at the bottom at this time;

[0024] c Pre-rolling: The bottom ring of the outer ring surface away from the top surface is pre-bent so that the bottom ring of the outer ring surface forms an inner bending ring;

[0025] d. Winding: Wind the inner bending ring;

[0026] e Clawing: Clawing the winding wire;

[0027] f. Drying: Dry the entire sealing cover. The drying temperature ensures that the sealing gasket and the cover body are fully fitted.

[0028] In specific implementation, the stamping and stretching equipment has a one-mold, two-cavity structure, and the robot transfers two sets of sealing rubber pads at a time through the suction cup, which improves the processing efficiency of the robot.

[0029] The steps of padding and stretching are specifically carried out on the combined machine; the steps of pre-rolling, winding, clawing and drying are carried out on the cap making machine; the cover blanks obtained by stretching the one-mold two-hole structure are transferred one by one to the step-by-step claw pair of the step-by-step conveying mechanism of the cap making machine through the transfer robot. The rhythm of the step-by-step conveying mechanism is twice that of the stamping and stretching equipment, ensuring that the cover blanks produced by the one-mold two-hole stamping and stretching equipment are promptly and reliably transferred to the cap making machine for subsequent operations. The step-by-step conveying mechanism conveys the cover blanks through the pre-rolling, winding, clawing and drying stations in sequence through the claw pair, which makes the entire process layout reasonable.

[0030] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0031] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A process for manufacturing a sealing cover, characterized in that: The sealing gaskets are prepared in batches according to the corresponding shape of the sealing end surface of the preset sealing cover, and then enter the following process: a. Padding: The raw material sheet of the cover is fed into the stamping and stretching equipment along the production line. A sealing pad feeding device is set at the front end of the stamping and stretching equipment. The sealing pad is reliably centered on the center area of ​​the raw material sheet through the transfer robot, and the sealing pad is set upward; b. Stretching: The raw material sheet of the cover body is stretched through the upper and lower die mechanisms, so that the top surface and the outer ring surface of the sealing cover are separated. During the stretching process, the upper die pressing head is provided with a contoured ring groove on the outer ring of the sealing gasket, so that the sealing gasket and the upper die pressing head are combined to form an integral upper die for the stretching operation, so that the top surface and the outer ring surface of the sealing cover are separated, and the top surface is arranged at the bottom at this time; c Pre-rolling: The bottom ring of the outer ring surface away from the top surface is pre-bent so that the bottom ring of the outer ring surface forms an inner bending ring; d. Winding: Wind the inner bending ring; e Clawing: The winding wire is subjected to clawing processing.

2. The manufacturing process of the sealing cover according to claim 1, characterized in that: Before the padding step is performed, a preheating station is pre-set to preheat the raw material sheet to 65° C. to 75° C.

3. The manufacturing process of the sealing cover according to claim 2, characterized in that: The sealing rubber pad is adsorbed and transported by the suction cup of the robot. After centering and positioning, the sealing rubber pad is pressed onto the corresponding position of the preheated raw material sheet. Thereafter, the sealing rubber pad is adhered to the surface of the raw material sheet by heating, so that the sealing rubber pad and the raw material sheet become an integrated structure.

4. The manufacturing process of the sealing cover according to claim 3, characterized in that: During the process of laminating the sealing rubber pad to the raw material sheet, the robot continuously applies force for 0.2s to 0.3s through the suction cup to ensure that the sealing rubber pad is reliably combined with the raw material sheet through pressure on the top and thermal bonding on the bottom.

5. The manufacturing process of the sealing cover according to claim 1, characterized in that: The sealing rubber gasket is an annular structure with a central hole.

6. The manufacturing process of the sealing cover according to claim 1, characterized in that: The stamping and stretching equipment has a one-mold, two-cavity structure, and the manipulator transfers two sets of sealing rubber pads at a time through the suction cup.

7. The process for manufacturing a sealing cover according to claim 1, wherein: After step e, step f of drying is added to dry the entire sealing cover.

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