Coating sheet punching device

Abstract

The utility model discloses a wrapping sheet punching device which comprises a base, a lower sheet punching die arranged in the center of the upper surface of the base, positioning columns arranged on the two sides of the upper surface of the base, an upper positioning table, a connecting piece arranged at the upper end of the upper positioning table and an upper sheet punching die arranged at the lower end of the upper positioning table. The base is inserted into positioning column connecting holes in the two sides of the upper positioning table through positioning columns on the two sides of the upper surface, so that a cutting ring at the lower end of the upper punching die is aligned with a cutting groove in the upper end of the lower punching die. And the upper positioning table is connected with pressure equipment of the hydraulic machine through the connecting piece. According to the wrapping sheet punching device, semi-automation of wrapping sheet manufacturing can be achieved, a wrapping sheet product is free of burrs, and the shape of the wrapping sheet product completely meets the requirement.

Description

Technical Field

[0001] The utility model relates to a device for punching coated sheets, belonging to the technical field of solid propellant preparation. Background Art

[0002] The coating layer plays a very important role in the charge design of solid propellants. It is an important part of the engine charge and has a great influence on the combustion surface area and interior ballistic performance of the charge. The coating layer has the function of suppressing combustion during the entire combustion period of the charge. If the combustion surface area increases due to the burning through, debonding or cracking of the coating layer during the combustion process of the charge, it will cause a sharp increase in the combustion chamber pressure, until the engine explodes.

[0003] In the traditional process of manufacturing coated sheets, manual scissors have been used to cut the coating material into the shapes required for the charge. Due to manual cutting, there are many burrs on the obtained coated sheets, and the cutting process of some coated sheets with special requirements is relatively complex, resulting in low production efficiency and poor accuracy. Summary of the Invention

[0004] The purpose of the utility model is to provide a device for punching coated sheets in order to solve the problems of many burrs and complex cutting process existing in the coated sheets manufactured by the traditional process.

[0005] The purpose of the utility model is achieved through the following technical solutions.

[0006] A device for punching coated sheets of the utility model includes a base, a lower punching die arranged at the center of the upper surface of the base, positioning columns arranged on both sides of the upper surface of the base, an upper positioning table, a connecting piece arranged at the upper end of the upper positioning table, and an upper punching die arranged at the lower end of the upper positioning table;

[0007] Positioning column connection holes are opened on both sides of the upper positioning table;

[0008] A cutting ring matching the size of the coated sheet is arranged at the lower end of the upper punching die;

[0009] A support plane is arranged at the upper end of the lower punching die, and a cutting groove corresponding to the cutting ring at the lower end of the upper punching die is opened on the support plane;

[0010] The base is inserted into the positioning column connection holes on both sides of the upper positioning table through the positioning columns on both sides of the upper surface, so that the cutting ring at the lower end of the upper punching die is aligned with the cutting groove at the upper end of the lower punching die; the upper positioning table is connected to the pressure device of the hydraulic press through the connecting piece.

[0011] A limiting column for positioning the plate-like covering material is provided on the upper support plane of the lower punch die, so that the edge of the plate-like covering material is limited by the limiting column, thereby ensuring the consistency of the punching operation of the punching device on the plate-like covering material.

[0012] A support frame flush with the upper support plane of the lower punch die is fixed on the upper surface of the base, which is used to carry the portion of the plate-like coating material that exceeds the upper support plane of the lower punch die, ensuring that the coating material is stably placed on the punch die.

[0013] Working process

[0014] Place the plate-like coating material on the supporting plane at the upper end of the lower punch die, so that the edge of the plate-like coating material is limited by the limiting column, and the portion of the plate-like coating material that exceeds the supporting plane at the upper end of the lower punch die is placed on the upper surface of the support frame; then control the upper positioning table to move vertically downward along the limiting column by the pressure equipment of the hydraulic press until the cutting ring at the lower end of the upper punch die cuts the cutting ring at the lower end of the upper punch die and is inserted into the cutting groove at the upper end of the lower punch die; then control the upper positioning table to move vertically upward along the limiting column by the pressure equipment of the hydraulic press, remove the cut coating sheet, move the plate-like coating material, repeat the above operation, and complete the coating sheet cutting at other positions of the plate-like coating material.

[0015] Beneficial effects:

[0016] The covering sheet punching device of the utility model can realize semi-automatic covering sheet production and greatly reduce labor intensity; it can realize covering sheet without burrs and whose morphology fully meets the requirements, and reduce the operation of removing burrs from the covering sheet before covering while improving product quality, and eliminates the complicated manual processing procedures of some covering sheets with special requirements, which not only shortens the operation time but also improves the intrinsic safety conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the cladding sheet punching device of the utility model;

[0018] Figure 2 It is a bottom view of the upper mold assembly in the cladding sheet punching device of the utility model;

[0019] Figure 3 It is a top view of the lower mold assembly in the cladding sheet punching device of the utility model;

[0020] Among them, 1-upper positioning platform; 2-connecting piece; 3-upper punching die, 4-base; 5-positioning column connecting hole; 6-lower punching die; 7-positioning column; 8-limiting column; 9-support frame. DETAILED DESCRIPTION

[0021] The following further describes the content of the present utility model in conjunction with the accompanying drawings and embodiments.

[0022] Embodiment

[0023] As Figure 1 shown, a wrapping sheet punching device of the present utility model includes an upper die assembly and a lower die assembly;

[0024] As Figure 2 shown, the lower die assembly includes a base 4, a lower punching die 6 disposed at the center of the upper surface of the base, and positioning columns 7 disposed on both sides of the upper surface of the base;

[0025] As Figure 3 shown, the upper die assembly includes an upper positioning table 1, a connecting member 2 disposed at the upper end of the upper positioning table 1, and an upper punching die 3 disposed at the lower end of the upper positioning table 1;

[0026] Both sides of the upper positioning table 1 are provided with positioning column connection holes 5;

[0027] The lower end of the upper punching die 3 is provided with a cutting ring matching the size of the wrapping sheet;

[0028] The upper end of the lower punching die 6 is provided with a support plane, and a cutting groove corresponding to the cutting ring at the lower end of the upper punching die 3 is opened on the support plane;

[0029] The base is inserted into the positioning column connection holes on both sides of the upper positioning table 1 through the positioning columns 7 on both sides of the upper surface, so that the cutting ring at the lower end of the upper punching die 3 is aligned with the cutting groove at the upper end of the lower punching die 6; the upper positioning table 1 is connected to the pressure equipment of the hydraulic press through the connecting member 2.

[0030] Limit columns 8 for positioning the plate-shaped wrapping material are provided on the upper support plane of the lower punching die 6, so that the edge of the plate-shaped wrapping material is limited by the limit columns 8 to ensure the consistency of the punching operation of the punching device on the plate-shaped wrapping material.

[0031] A support frame 9 flush with the upper support plane of the upper end of the lower punching die 6 is fixed on the upper surface of the base, which is used to carry the part of the plate-shaped wrapping material exceeding the upper support plane of the lower punching die 6.

[0032] Working process

[0033] Place the plate-shaped covering material on the upper support plane of the lower punch die 6, limit the edge of the plate-shaped covering material through the limit posts 8, and place the part of the plate-shaped covering material that extends beyond the upper support plane of the lower punch die 6 on the upper surface of the support frame 9; then control the upper positioning table 1 to vertically descend along the limit posts 8 through the pressure device of the hydraulic press until the cutting ring at the lower end of the upper punch die 3 cuts the cutting ring at the lower end of the upper punch die 3 and then inserts into the cutting groove at the upper end of the lower punch die 6; then control the upper positioning table 1 to vertically ascend along the limit posts 8 through the pressure device of the hydraulic press. After removing the cut covering piece, move the plate-shaped covering material and repeat the above operations to complete the cutting of the covering pieces at other positions of the plate-shaped covering material.

Claims

1. A cladding sheet punching device, characterized in that: It includes a base, a lower punch die arranged at the center of the upper surface of the base, positioning columns arranged on both sides of the upper surface of the base, an upper positioning platform, a connecting piece arranged at the upper end of the upper positioning platform, and an upper punch die arranged at the lower end of the upper positioning platform; Positioning column connection holes are provided on both sides of the upper positioning platform; The lower end of the upper punch die is provided with a cutting ring matching the size of the covering sheet; A support plane is provided at the upper end of the lower punch die, and a cutting groove corresponding to the cutting ring at the lower end of the upper punch die is opened on the support plane; The base is inserted into the positioning column connecting holes on both sides of the upper positioning platform through the positioning columns on both sides of the upper surface, so that the cutting ring at the lower end of the upper punch mold is aligned with the cutting groove at the upper end of the lower punch mold; the upper positioning platform is connected to the pressure equipment of the hydraulic press through the connecting piece.

2. A wrapping sheet punching device as claimed in claim 1, characterized in that: A limiting column for positioning the plate-shaped covering material is provided on the supporting plane at the upper end of the lower punch die, so that the edge of the plate-shaped covering material is limited by the limiting column.

3. A covering sheet punching device as claimed in claim 1 or 2, characterized in that: A support frame flush with the upper support plane of the lower punch die is fixed on the upper surface of the base, and is used to carry the portion of the plate-shaped coating material that exceeds the upper support plane of the lower punch die.

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