Cutting device for ultrathin diaphragm casting piece

Abstract

The invention relates to a cutting device for an ultrathin diaphragm casting piece, which comprises a base which is an n-shaped frame, a cross beam of the base is a transversely arranged straight rod, the length of the cross beam is greater than the width of a diaphragm, and two ends of the cross beam are respectively connected with the ground through upright posts, so that the cross beam is positioned below the diaphragm and is vertical to the advancing direction of the diaphragm; a guide rail and a slide block; the guide rail is linear and is arranged on the cross beam in the same direction, and the length of the guide rail is equivalent to that of the cross beam; the sliding block is in a block shape, is arranged on the sliding rail in a matched mode and can move along the sliding rail. The cutter is in a sharp knife shape with a knife tip facing upwards and is mounted on the sliding block through a base, and the knife tip of the cutter can abut against the diaphragm to achieve cutting; the number of the cutters is two, and the two cutters correspond to edge materials on the two sides of the diaphragm respectively. The two sides of the diaphragm are precisely cut through the movable cutter structure, and it is ensured that the width of the diaphragm meets the process requirement. And meanwhile, the cutter can be flexibly adjusted, and the production requirement is fully met.

Description

TECHNICAL FIELD

[0001] The present application relates to an industrial production device, in particular to a lithium battery diaphragm production device, and more particularly to a cutting device for ultra-thin diaphragm casting sheet. BACKGROUND

[0002] In the production of ultra-thin lithium battery diaphragm (diaphragm thickness less than or equal to 5um) products, in order to meet the performance requirements of the diaphragm, the stretching ratio and the film surface tension of the equipment MDO (first longitudinal stretching) process are improved. After the transformation, the width of the stretched film is wider, and it cannot be clamped, which greatly affects the normal production.

[0003] At present, in order to not change the die head, casting, longitudinal stretching machine and other main equipment, the above problems are mainly solved by reducing the casting film speed, improving the longitudinal stretching ratio, adjusting the temperature, speed ratio, chain width, tension, pressure difference and other methods. However, experiments show that the elongation and puncture strength of the product treated by this method do not meet the quality standards.

[0004] Therefore, it is urgent to design a device that can cut the diaphragm before stretching to meet the production needs. SUMMARY

[0005] The purpose of the present application is to overcome the shortcomings of the prior art, and to provide a cutting device for ultra-thin diaphragm casting sheet, which can conveniently cut the edge material on both sides of the diaphragm, and ensure that the width of the diaphragm meets the process requirements. Moreover, the position of the cutting knife can also be adjusted conveniently, fully meeting the production needs.

[0006] The technical scheme of the present application is: A cutting device for ultra-thin diaphragm casting sheet, comprising, a base, which is a "door" shaped frame, the crossbeam is a horizontal straight rod, the length is greater than the width of the diaphragm, and the two ends are connected to the ground through the stand, so that it is located below the diaphragm and perpendicular to the direction of the diaphragm; a guide rail and a sliding block; the guide rail is linearly arranged on the crossbeam in the same direction, and the length is equivalent to that of the crossbeam; the sliding block is block-shaped and is arranged on the sliding rail in cooperation, and can move along the sliding rail; and a cutting knife, which is a sharp knife with the knife tip pointing upwards, is installed on the sliding block through the base, and the knife tip can touch the diaphragm to realize cutting; the cutting knife is two, corresponding to the edge material on both sides of the diaphragm.

[0007] Further, it further includes a screw rod and a connecting block; the screw rod is arranged on one side of the guide rail in the same direction, the outer end of the screw rod is connected with the end of the cross beam through a first fixing seat, the inner end of the screw rod is connected with the middle part of the cross beam through a second fixing seat, the outer end of the screw rod is connected with a first motor, the connecting block is rotationally connected with the screw rod and is connected with the base, and the first motor is electrically connected with a control system.

[0008] Further, it further includes a cylinder arranged on the base, a push rod of the cylinder is connected with the bottom of the cutter, and the cylinder is electrically connected with the control system.

[0009] Further, it further includes a protective cover which is a rectangular hollow box, is installed on the upper end of the shell of the cylinder, and places the cutter in the protective cover, an upper end of the protective cover is provided with a through-hole-shaped opening, and the cutter tip can be stretched out of the protective cover from the opening.

[0010] Further, it further includes a scale and a pointer; the scale is a long strip-shaped, is arranged on the side of the guide rail in the same direction, and corresponds to the cutter, and the pointer is arranged on the base and corresponds to the scale.

[0011] Further, it further includes a cutter roller and a cutter tension roller; the cutter roller and the cutter tension roller are both linear rollers, are arranged on the two sides of the cutter in parallel, are perpendicular to the running direction of the diaphragm, and are connected with the cross beam at two ends, respectively, the cutter roller is located in front of the running direction of the diaphragm, the end of the rotating shaft of the cutter roller is connected with a second motor through a shaft coupling, the diaphragm passes through the top surface of the cutter roller and the bottom surface of the cutter tension roller in sequence, plays a conveying role, and provides a film surface tension when cutting, and the second motor is electrically connected with the control system.

[0012] Further, it further includes a connecting frame which is U-shaped, the bottom of the connecting frame is connected with the cross beam, and the upper end of the connecting frame is connected with the end of the cutter roller and the cutter tension roller, respectively.

[0013] Further, the distance between the cutter roller and the cutter is greater than the distance between the cutter tension roller and the cutter.

[0014] Further, it further includes a control box, the control box is internally provided with a power switch, a servo, a knob switch and the control system.

[0015] Further, it further includes a plurality of anti-collision strips which are all block-shaped, are arranged at the end and the middle part of the slide rail, respectively, so as to limit the movement of the sliding block.

[0016] The beneficial effects of the present application are as follows: The application has reasonable design, simple structure and convenient use. The movable cutter structure is arranged by using the space position of the existing production line to accurately cut the two sides of the diaphragm, so that the width of the diaphragm meets the process requirements. Meanwhile, the cutter can be flexibly adjusted to meet the needs of different products. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 is a structural schematic diagram of the application.

[0018] Fig. 2 is a structural schematic diagram of the adjusting assembly and the cutter assembly.

[0019] Fig. 3 is Fig. 2 is an enlarged schematic view of A in FIG.

[0020] In the figure, 1 is a first motor; 2 is a connecting frame; 3 is a second motor; 4 is a diaphragm; 5 is a cutter; 6 is a cutter roller; 7 is a cutter tension roller; 8 is a scrap edge; 9 is a guide rail; 10 is a base; 101 is a cross beam; 11 is a first fixed seat; 12 is a screw rod; 13 is a connecting block; 14 is an air cylinder; 15 is a protective cover; 16 is a second fixed seat; 17 is an anti-collision strip; 18 is a base; 19 is a pointer; 20 is a sliding block; and 21 is a scale. The arrow is the running direction of the diaphragm. DETAILED DESCRIPTION

[0021] The application will be further described below in combination with the drawings and examples.

[0022] As Figs. 1 to 3 shown.

[0023] A cutting device for ultra-thin diaphragm castings, comprising a base 10, an adjusting assembly, a cutter assembly, a cutter roller 6, a cutter tension roller 7 and a control box.

[0024] The base 10 is a "door" shaped frame structure, comprising a cross beam 101 and a stand. The cross beam 101 is a horizontal straight rod, and its length is greater than the width of the diaphragm 4. Its two ends are connected to the ground through the stand, so that it is located below the diaphragm and perpendicular to the running direction of the diaphragm.

[0025] The adjusting assembly comprises a guide rail 9, a sliding block 20, a screw rod 12, a connecting block 13, a scale 21 and a pointer 19.

[0026] The guide rail 9 is linearly arranged on the cross beam 101 in the same direction, and its length is equivalent to that of the cross beam 101. The sliding block 20 is block-shaped and is arranged on the sliding rail 9 in a matched manner, and can move along the sliding rail. Preferably, an anti-collision strip 17 is further included, which is block-shaped and is arranged at the end and middle part of the sliding rail 9, so as to limit the movement of the sliding block and prevent collision.

[0027] The lead screw 12 is coaxially arranged on one side of the guide rail 9, and the outer end thereof is connected to the end of the cross beam 101 through the first fixing seat 11, and the inner end thereof is connected to the middle of the cross beam 101 through the second fixing seat 16. Meanwhile, the outer end of the lead screw 12 is connected to the first motor 1, so as to drive the lead screw to rotate through the first motor. The connecting block 13 is rotatably connected to the lead screw 12 and is connected to the cutter assembly.

[0028] The scale 21 is in the shape of a long strip and is coaxially arranged on the side of the guide rail 12. The pointer 19 is arranged on the cutter assembly and corresponds to the scale, so as to facilitate the understanding of position information in time during adjustment.

[0029] The cutter assembly comprises a cutter 5, an air cylinder 14 and a protective cover 15.

[0030] The cutter 5 is in the shape of a sharp knife with the knife tip upward, and the bottom thereof is connected to the push rod of the air cylinder 14. The air cylinder 14 is arranged on the base 18. The base 18 is arranged on the sliding block 20 and is connected to the connecting block 13, so that the base 18 can be moved along the guide rail 12 under the driving of the lead screw. The pointer 19 is arranged on the base 18, so as to facilitate the indication of the position of the cutter.

[0031] The protective cover 15 is in the shape of a rectangular hollow box, is installed on the upper end of the shell of the air cylinder 14 and puts the cutter 5 therein. Meanwhile, the upper end of the protective cover 15 is provided with an opening in the shape of a through hole, so that the knife tip of the cutter 5 can extend out of the protective cover 15 from the opening. Thus, the knife tip of the cutter can be put into the protective cover through the action of the air cylinder when no cutting is performed, so as to prevent the knife tip from being accidentally touched and causing a safety hazard.

[0032] The adjustment assembly and the cutter assembly are both in two groups and are arranged on the two sides of the cross beam, so as to correspond to the two side edges of the diaphragm.

[0033] The cutter roller 6 and the cutter tension roller 7 are both in the shape of straight-line rollers, are arranged on the two sides of the cutter 5 in parallel and are perpendicular to the advancing direction of the diaphragm 4, and the two ends thereof are respectively connected to the cross beam 101 through the connecting frame 2.

[0034] The connecting frame 2 is in the shape of a U-shaped frame, the bottom thereof is connected to the cross beam 101, and the upper end thereof is connected to the end of the cutter roller 6 and the cutter tension roller 7, so as to ensure firm installation.

[0035] The cutter roller 6 is located in front of the direction of the diaphragm 4, the end of the rotating shaft is connected with the second motor 3 through the shaft coupling, the diaphragm passes through the top surface of the cutter roller and the bottom surface of the cutter tension roller in turn, the diaphragm is transported and the film surface tension is provided for cutting.

[0036] The control box is provided with the control system, power switch, servo, knob switch and other electrical components, and is electrically connected with the first motor, the second motor and the cylinder, so as to control the lifting of the cutter and the start-stop of the motor. Meanwhile, the first motor and the second motor are servo motors, which are convenient to control. The cylinder can be a double-rod cylinder of Yadea brand, model TN20X50S.

[0037] The use method of the application is as follows: The application is installed between the casting and MDO processes of the diaphragm production line and cooperates with the thickness gauge.

[0038] During operation, according to the width of the diaphragm cast piece and the target width of the diaphragm, the first motor is controlled to operate, and the cutter position is adjusted to the position. Then, the cylinder is controlled to operate, the cutter is lifted, the cutter tip is abutted to the diaphragm, the edge material of the diaphragm is cut, the qualified product after cutting flows into the next process, and the waste edge 8 can be collected through the waste hopper.

[0039] Meanwhile, the rotating speed of the second motor is adjusted, the rotating speed of the cutter roller is linked with the speed of the thickness gauge, the diaphragm is transported through the cooperation of the cutter roller and the cutter tension roller, the film surface tension is provided for cutting, the cut edge is ensured to be more flat and not wrinkled.

[0040] Therefore, the application utilizes the space position of the existing production line, the movable cutter structure is set, the diaphragm on both sides is accurately cut, and the width of the diaphragm meets the process requirements. Meanwhile, the cutter can be flexibly adjusted to meet the requirements of different products.

[0041] The parts not involved in the application are the same as or can be realized by the prior art.

Claims

1. A cutting device for ultrathin diaphragm castings, characterized in that, include The base is a "gate" shaped frame with horizontal beams that are straight rods placed horizontally. The length of the beams is greater than the width of the diaphragm. Both ends of the beams are connected to the ground through columns, so that the base is located below the diaphragm and perpendicular to the direction of travel of the diaphragm. A guide rail and a slider; the guide rail is linear, oriented in the same direction on the crossbeam, and its length is approximately equal to that of the crossbeam; the slider is block-shaped, fitted onto the guide rail, and can move along the guide rail; and The cutter is a pointed blade with its tip pointing upwards. It is mounted on the slider via a base, and its tip can contact the diaphragm to cut it. There are two cutters, one for each side of the diaphragm edge material.

2. The cutting device for ultrathin diaphragm castings according to claim 1, characterized in that, It also includes a lead screw and a connecting block; the lead screw is arranged in the same direction on one side of the guide rail, its outer end is connected to the end of the crossbeam through a first fixed seat, and its inner end is connected to the middle of the crossbeam through a second fixed seat; the outer end is connected to a first motor; the connecting block is screwed to the lead screw and connected to the base; the first motor is electrically connected to the control system.

3. The cutting device for ultra-thin diaphragm castings according to claim 2, characterized in that, It also includes a cylinder, which is mounted on the base and whose push rod is connected to the bottom of the cutter; the cylinder is electrically connected to the control system.

4. The cutting device for ultrathin diaphragm castings according to claim 1, characterized in that, It also includes a protective cover, which is a rectangular hollow box shape, installed on the upper end of the cylinder housing, and places the cutter inside; the upper end of the protective cover has a through hole-shaped opening, so that the tip of the cutter can extend out of the protective cover from the opening.

5. The cutting device for ultrathin diaphragm castings according to claim 1, characterized in that, It also includes a ruler and a pointer; the ruler is long and narrow, arranged in the same direction on the side of the guide rail and corresponding to the cutter; the pointer is located on the base and corresponds to the ruler.

6. The cutting device for ultrathin diaphragm castings according to claim 2, characterized in that, It also includes a cutter roller and a cutter tension roller; both the cutter roller and the cutter tension roller are straight rollers, arranged parallel to each other on both sides of the cutter and perpendicular to the traveling direction of the diaphragm, with their two ends connected to the crossbeam respectively; the cutter roller is located in front of the traveling direction of the diaphragm, and the end of its rotating shaft is connected to a second motor through a coupling, so that the diaphragm passes sequentially through the top surface of the cutter roller and the bottom surface of the cutter tension roller, which serves as a conveying function and provides film surface tension during cutting; the second motor is electrically connected to the control system.

7. The cutting device for ultrathin diaphragm castings according to claim 6, characterized in that, It also includes a connecting frame, which is U-shaped, with its bottom connected to the crossbeam and its upper end connected to the ends of the cutter roller and the cutter tension roller, respectively.

8. The cutting device for ultrathin diaphragm castings according to claim 6, characterized in that, The distance between the cutter roller and the cutter is greater than the distance between the cutter tension roller and the cutter.

9. The cutting device for ultrathin diaphragm castings according to claim 2, characterized in that, It also includes a control box, which contains a power switch, a servo, a rotary switch, and the control system.

10. The cutting device for ultrathin diaphragm castings according to claim 1, characterized in that, It also includes multiple anti-collision strips, all of which are block-shaped and are respectively set at the ends and middle of the slide rail to limit the movement of the slider.

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