Knife rest structure for thick foil shears

Abstract

The invention relates to the technical field of shearing machines, in particular to a knife rest structure for thick foil shears, which comprises a first support and a cutting disc, a first cylinder and a second cylinder are arranged between the first support and the cutting disc, the fixed end of the first cylinder is arranged on the first support, and the telescopic end of the first cylinder is connected with the fixed end of the second cylinder. The telescopic end of the second air cylinder is rotationally connected with the cutting disc, the telescopic end of the first air cylinder moves in the first direction, and the telescopic end of the second air cylinder moves in the second direction. The lower cutter overlapping amount and the cutter leaning backlash of the cutting disc can be easily adjusted, operation is easy, use is convenient, and the edge cutting quality is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of shearing machines, and in particular relates to a knife frame structure for thick foil shears. Background Art

[0002] The thick foil shearing machine is a device that can slit large rolls into small rolls in the finishing and shearing process of electronic aluminum foil. Figure 3 As shown, it mainly includes an upper cutter shaft 7 and a lower cutter shaft 15, wherein a plurality of parallel upper disc cutters 4 are evenly arranged on the upper cutter shaft 7, and a plurality of lower cutters 10 are staggeredly arranged on the lower cutter shaft 15, wherein the upper disc cutters 4 are fixed on the upper cutter shaft 7 through an upper cutter seat 8, and the lower cutters 10 are fixed on the lower cutter shaft 15 through a lower cutter pad 9, a clamping sleeve 11, a tightening sleeve 12, a round nut 13, and a round nut 14.

[0003] The existing disc cutter fixing method of the above structure has the following problems: 1. The upper disc knife fits tightly with the lower disc knife, and it is impossible to replace only one upper disc knife. Even if the lower disc knife is not damaged, the upper disc knife and the lower disc knife need to be disassembled at the same time, and the installation and adjustment time is long. It takes about 20-30 minutes to adjust each time the upper disc knife is replaced, which reduces production efficiency; Second, the concentricity between the upper knife seat and the knife shaft is low, the upper knife surface is not perpendicular to the upper knife shaft, the radial runout and axial runout of the slitting knife are large, the equipment operation accuracy is poor, the shearing performance is unstable, and the error reaches more than ten to more than twenty wires per meter, resulting in unstable quality of the sheared edge of thick foil, which is prone to quality defects such as warping and ruffles; 3. Since the upper knife shaft is an integral through shaft, the installation method of the parallel knife makes the upper disc knives on the left and right sides parallel to the direction of material movement. The side contact area between the material and the upper disc knife is large, which leads to knife wear and large consumption. Each shearing machine consumes about hundreds of thousands of knives every year.

[0004] Therefore, there is an urgent need for a thick foil shears knife holder structure that is easy to disassemble and has adjustable position. Summary of the invention

[0005] The present invention aims to solve the problem that the disc knife fixing structure of the existing thick foil shearing machine is inconvenient to install and adjust, resulting in unstable shearing performance of the equipment, poor precision and high product defect rate. A knife holder structure for thick foil shears is provided, which can easily adjust the lower knife overlap amount and the side clearance of the disc knife, is simple to operate, easy to use and improves the edge cutting quality.

[0006] In order to achieve the above object, the technical solution of the present invention is: A knife holder structure for thick foil shears comprises a first support and a disc knife, wherein a first cylinder and a second cylinder are arranged between the first support and the disc knife, the fixed end of the first cylinder is arranged on the first support, the telescopic end of the first cylinder is connected to the fixed end of the second cylinder, the telescopic end of the second cylinder is rotatably connected to the disc knife, the telescopic end of the first cylinder moves in a first direction, and the telescopic end of the second cylinder moves in a second direction. The first cylinder drives the second cylinder and the disc knife to move in the first direction, and the second cylinder drives the disc knife to move in the second direction.

[0007] Furthermore, the knife frame structure is slidably arranged on the shearing machine via a guide rail, and a guide groove matching the guide rail is arranged on the first support. The knife frame structure can move along the guide rail, so as to facilitate adjusting the position of the knife frame structure on the shearing machine.

[0008] Furthermore, the first direction is a vertical direction, and the second direction is a horizontal direction. The first cylinder realizes a pneumatic knife lowering function, and the second cylinder realizes a knife leaning function during shearing production.

[0009] Furthermore, a fine-tuning assembly is provided between the first cylinder and the second cylinder, and the fine-tuning assembly includes an adjustment polished rod provided along a first direction, one end of the adjustment polished rod is rotatably connected to the first cylinder body, the other end of the adjustment polished rod is slidably provided in the first piston, driving the first piston to rotate relative to the first cylinder body, and the other end of the first piston extending out of the first cylinder body is threadedly connected to the second cylinder. The fine-tuning assembly is manually adjusted to achieve fine-tuning of the overlap amount of the upper and lower knives.

[0010] Furthermore, a scale is provided on the top of the adjustment polished rod to quantify the adjustment range.

[0011] Furthermore, an upper knife shield is arranged on the fixed end of the second cylinder, the upper knife shield partially shields the disc knife, and a lubricating felt slidably connected to the disc knife is arranged on the upper knife shield. The upper knife shield is used to protect the disc knife, and the lubricating felt provides lubrication for the disc knife.

[0012] Furthermore, a guide assembly is provided between the first cylinder and the second cylinder, the guide assembly comprising a guide column provided along a first direction, one end of the guide column being slidably connected to the fixed end of the first cylinder and the other end being fixedly connected to the fixed end of the second cylinder. The guide assembly is used to limit the movement direction of the telescopic end of the first cylinder to prevent deviation.

[0013] Furthermore, a precision bevel gasket with a gradually changing cross-sectional thickness is arranged between the first support and the first cylinder, and the precision bevel gasket is used to adjust the inverted eight-shaped shearing angle between the disc cutter and the running direction of the incoming material, so as to reduce the wear of the cutter by the sheared material.

[0014] Furthermore, the air intake hoses of the first cylinder and the second cylinder are both provided with electromagnetic valves. When the electromagnetic valves are energized, the piston chambers of the cylinders are inflated to achieve displacement of the pistons.

[0015] Through the above technical solution, the beneficial effects of the present invention are: The present invention changes the fixing form of the disc knife, uses a knife holder structure to fix a single disc knife, the first cylinder can adjust the lowering position of the disc knife, and the second cylinder adjusts the close position of the disc knife, thereby avoiding the defect of wasting manpower and energy in the traditional setting of disassembling and assembling two knives at the same time.

[0016] The present invention changes the fluctuation and inconsistency defects of the disc knife lowering action and the overlap adjustment by each operator in the previous design, realizes the standard adjustment operation of the disc knife lowering and the overlap, greatly increases the stability and consistency of the shearing quality, and improves the customer praise rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 For along Figure 1 Sectional view along line AA; Figure 3 The present invention is a structural schematic diagram of an existing thick foil shearing whole-axis upper and lower knife device.

[0018] The numbers in the accompanying drawings are: 1 is the first support, 11 is the guide groove, 12 is the inclined gasket, 13 is the clamping screw, 2 is the first cylinder, 21 is the first cylinder body, 22 is the first piston, 23 is the air intake hose, 24 is the return spring, 25 is the cylinder bottom pressure cover, 26 is the piston seal, 27 is the piston guide ring, 3 is the second cylinder, 31 is the second cylinder body, 32 is the second piston, 4 is the disc knife, 41 is the upper knife guard, 42 is the lubricating felt, 43 is the bearing, 44 is the bearing seat, 5 is the fine-tuning component, 51 is the adjustment rod, 52 is the second support, 53 is the rotating flat key, 54 is the pre-tightening nut, 61 is the guide column, 62 is the guide shaft sleeve, 7 is the upper knife shaft, 8 is the upper knife seat, 9 is the lower knife pad, 10 is the lower knife, 11 is the clamping sleeve, 12 is the tightening sleeve, 13 and 14 are both round nuts, and 15 is the lower knife shaft. DETAILED DESCRIPTION

[0019] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments: like Figure 1-2 As shown, this embodiment provides a knife holder structure for thick foil shears, comprising a first support 1, a first cylinder 2, a second cylinder 3 and a disc knife 4, and the upper disc knife is shown in this embodiment.

[0020] A first cylinder 2 and a second cylinder 3 are arranged between the first support 1 and the disc knife 4, and the fixed end of the first cylinder 2 is arranged on the first support 1, and the first support 1 is used to connect the shearing machine; the telescopic end of the first cylinder 2 is connected to the fixed end of the second cylinder 3, and the first cylinder 2 drives the disc knife 4 to move in the vertical direction to realize the pneumatic knife lowering function; the telescopic end of the second cylinder 3 is rotatably connected to the disc knife 4, and the second cylinder 3 drives the disc knife 4 to move in the horizontal direction to realize the pneumatic knife leaning function; the telescopic end of the first cylinder 2 moves in the first direction, and the telescopic end of the second cylinder 3 moves in the second direction, the first direction is the vertical direction, and the second direction is the horizontal direction.

[0021] like Figure 2 As shown, the first support 1 is arranged on one side of the first cylinder 21, and the tool holder structure is slidably arranged on the shearing machine through a guide rail. A guide groove 11 matching the guide rail is arranged on the first support 1, and the guide groove 11 is a dovetail guide groove. A clamping screw 13 is arranged between the guide groove 11 and the guide rail, so that the entire tool holder can achieve precise lateral movement and positioning through the guide groove 11 and adjusting the clamping screw 13.

[0022] A shear angle adjustment component is arranged between the first support 1 and the first cylinder body 21, and the shear angle adjustment component includes a precision inclined gasket 12 with a gradually changing cross-sectional thickness along the guide rail direction. The inclined gasket 12 is arranged between the first support 1 and the first cylinder 2. The inclined gasket 12 is an existing mature spare part. The inclined gaskets of different angles can be selected according to the thickness and material of the incoming product, so that an inverted eight-shaped shear angle is formed between the disc knife 4 and the running direction of the incoming material, thereby reducing the wear of the shearing material on the tool.

[0023] like Figure 1 As shown, the first cylinder 2 includes a first cylinder body 21, a first piston 22, an air intake hose 23 and a joint, a return spring 24, and a cylinder bottom pressure cover 25; compressed gas enters the first cylinder body 21 from the air intake hose 23, and after the piston cavity is inflated, the first piston 22 falls and drives the disc knife 4 to move downward, realizing the pneumatic cutting function; after shutdown, the piston cavity is deflated, and the return spring 24 lifts the first piston 22 to realize the function of lifting the disc knife 4. In this embodiment, the first piston 22 is rotatably arranged inside the piston cavity, and a piston seal 26 and a piston guide ring 27 are arranged between the first piston 22 and the inner wall of the first cylinder body 21. The bottom of the first piston 22 has threads. As an implementable embodiment, the bottom of the first piston 22 is connected to a screw rod.

[0024] The pneumatic principle of the second cylinder 3 is basically the same as that of the first cylinder 2, and the similar structure of the second cylinder 3 is not repeated here. The second cylinder 3 includes a second cylinder body 31 and a second piston 32. In this embodiment, the fixed end of the second cylinder 3 is the second cylinder body 31, and the telescopic end of the second cylinder 3 is the second piston 32. The second piston 32 only telescopes but does not rotate in the piston cavity; the end of the second piston 32 is connected to the disc knife 4 through a bearing 43 and a bearing seat 44. The bearing 43 is a grade 2 precision radial deep groove ball bearing, and the disc knife 4 is fixed on the bearing seat 44 by a precisely positioned fastening screw. The other side of the disc knife 4 away from the second cylinder 3 is connected to a driving device to drive the disc knife 4 to rotate, thereby realizing high-speed rotary shearing of the disc knife 4.

[0025] As an implementation method, solenoid valves are provided on the air inlet hoses of the first cylinder 2 and the second cylinder 3. When the solenoid valves are powered, the cylinder piston chambers are inflated, and the disc cutter 4 is pneumatically extended and pressed together; when the solenoid valves are powered off, the cylinder piston chambers are deflated, the springs are reset to lift the piston rod, and the disc cutter 4 is lifted and reset.

[0026] In order to achieve fine-tuning of the lowering of the disc knife 4, a fine-tuning component 5 is arranged between the first cylinder 2 and the second cylinder 3, and the fine-tuning component 5 includes an adjustment rod 51 arranged along the first direction and a second support 52 fixedly arranged on the top of the first cylinder body 21, one end of the adjustment rod 51 is rotatably connected to the first cylinder body 21, and the other end of the adjustment rod 5 is slidably arranged in the first piston 22, driving the first piston 22 to rotate relative to the first cylinder body 21, and the other end of the first piston 22 extending out of the first cylinder body 21 is threadedly connected to the second cylinder 3.

[0027] Specifically, the second support 52 is connected to the first cylinder body 21 by fastening bolts, the adjustment rod 51 is rotatably set at the center of the second support 52, a bidirectional thrust bearing is set between the adjustment rod 51 and the second support 52, the adjustment rod 51 passes through the second support 52 and is connected to the first piston 22 through the side wall of the first cylinder body 21 by rotating the flat key 53, a rod shaft seal is set between the adjustment rod 51 and the side wall of the first cylinder body 21, and a scale is set on the top of the adjustment rod 51. When the adjustment rod 51 rotates relative to the first cylinder 2, the end face arrow is compared with the precision scale to realize the quantification of the adjustment range, and the fine-tuning range is 0-5mm.

[0028] like Figure 1 As shown, the upper end surface of the second cylinder body 31 is provided with a pre-tightening nut 54 and an adjustment hole matching the first piston 22. The manual lower knife fine-tuning assembly can drive the first piston 22 to rotate by manually rotating the adjustment rod 51 through the action of the thrust bearing and the rotating flat key, thereby adjusting the lifting and lowering of the pre-tightening nut 54 to achieve fine-tuning of the overlap amount of the upper and lower knives.

[0029] An upper knife guard 41 is provided on the fixed end of the second cylinder 3, and the upper knife guard 41 partially covers the disc knife 4. The upper knife guard 41 is used to protect the disc knife 4. A lubricating felt 42 slidingly connected to the disc knife 4 is provided on the upper knife guard 41. The lubricating felt 42 is made of wool or synthetic fiber through a needle punching or bonding process to form a porous structure, which can absorb and store lubricants.

[0030] like Figure 2 As shown, a guide assembly is arranged between the first cylinder 2 and the second cylinder 3, and the guide assembly is used to limit the movement direction of the telescopic end of the first cylinder 2 to prevent deviation. The guide assembly includes a guide column 61 arranged along the first direction and a guide sleeve 62 arranged inside the first cylinder body 21, one end of the guide column 61 is slidably connected to the fixed end of the first cylinder 2, and the other end is fixedly connected to the fixed end of the second cylinder 3. Specifically, the guide column 61 matches the guide sleeve 62, one end of the guide column 61 is slidably arranged in the guide sleeve 62, and the other end is fixed on the second cylinder body 31.

[0031] Working principle of the present invention: When in use, the entire tool holder structure is moved and positioned horizontally through the guide groove 11 and the clamping screw 13. After the position of the tool holder structure is adjusted, the first cylinder 2 is started, the first piston 22 extends, drives the second cylinder 3 and the disc knife 4 to move downward, and realizes the pneumatic knife lowering function; the second cylinder 3 is started, the second piston 32 extends, drives the disc knife 4 to move to one side, and realizes the pneumatic knife leaning function; the first piston 22 is manually rotated or the polished rod 51 is adjusted to adjust the distance between the first cylinder 2 and the second cylinder 3, and realizes the fine adjustment of the overlap amount of the upper and lower knives.

[0032] The embodiments described above are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made according to the structures, features and principles described in the patent scope of the present invention should be included in the scope of the patent application of the present invention.

Claims

1. A knife holder structure for thick foil shears, comprising a first support (1) and a disc knife (4), characterized in that: A first cylinder (2) and a second cylinder (3) are arranged between the first support (1) and the circular knife (4); a fixed end of the first cylinder (2) is arranged on the first support (1); a telescopic end of the first cylinder (2) is connected to a fixed end of the second cylinder (3); the telescopic end of the second cylinder (3) is rotatably connected to the circular knife (4); the telescopic end of the first cylinder (2) moves in a first direction; and the telescopic end of the second cylinder (3) moves in a second direction.

2. A tool holder structure for thick foil shears according to claim 1, characterized in that: The knife holder structure is slidably arranged on the shearing machine via a guide rail, and a guide groove (11) matching the guide rail is arranged on the first support (1).

3. The tool holder structure for thick foil shears according to claim 1, characterized in that: The first direction is a vertical direction, and the second direction is a horizontal direction.

4. The tool holder structure for thick foil shears according to claim 1, characterized in that: A fine-tuning assembly (5) is arranged between the first cylinder (2) and the second cylinder (3), and the fine-tuning assembly (5) comprises an adjustment rod (51) arranged along a first direction, one end of the adjustment rod (51) being rotatably connected to the first cylinder body (21), the other end of the adjustment rod (5) being slidably arranged in the first piston (22) to drive the first piston (22) to rotate relative to the first cylinder body (21), and the other end of the first piston (22) extending out of the first cylinder body (21) being threadedly connected to the second cylinder (3).

5. The tool holder structure for thick foil shears according to claim 4, characterized in that: The adjustment polished rod (51) is provided with a scale.

6. The tool holder structure for thick foil shears according to claim 1, characterized in that: An upper knife shield (41) is provided on the fixed end of the second cylinder (3), the upper knife shield (41) partially shielding the circular knife (4), and a lubricating felt (42) slidably connected to the circular knife (4) is provided on the upper knife shield (41).

7. The thick foil shears tool holder structure according to claim 1, characterized in that: A guide assembly is arranged between the first cylinder (2) and the second cylinder (3), the guide assembly comprising a guide column (61) arranged along a first direction, one end of the guide column (61) being slidably connected to a fixed end of the first cylinder (2), and the other end being fixedly connected to a fixed end of the second cylinder (3).

8. The thick foil shears tool holder structure according to claim 1, characterized in that: A precision inclined gasket (12) with a gradually changing cross-sectional thickness is provided between the first support (1) and the first cylinder (2).

9. The thick foil shears tool holder structure according to claim 1, characterized in that: Solenoid valves are provided on the air intake hoses of the first cylinder (2) and the second cylinder (3).

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