Shaping die cutter for cavity EVA soundproof sealing device and using method thereof

Abstract

A kind of setting die cutting machine and use method for cavity EVA sound insulation sealing device, EVA semi-finished product belt is sent into between traction setting upper roller and traction setting lower roller, adjusting bolt on the upper end of the two sides needle bearing square slide seat III of traction setting upper roller is adjusted, so that the gap between traction setting upper roller and traction setting lower roller reaches less than the thickness of EVA semi-finished product belt;EVA semi-finished product belt is set as EVA finished product belt by traction setting upper roller and traction setting lower roller, and EVA finished product belt is drawn to between die cutting knife upper roller and die cutting lower roller;The adjusting bolt on the upper end of the two sides needle bearing square slide seat I of die cutting knife device is adjusted, so that at least one group of die cutting knife upper roller and die cutting lower roller contact, and at least one group of EVA sound insulation sealing device is rolled out;EVA semi-finished product belt is sequentially passed through between traction setting upper roller and traction setting lower roller and die cutting knife upper roller and die cutting lower roller, and multiple at least one group of EVA sound insulation sealing device is continuously rolled out;Production efficiency is improved.

Description

Technical Field

[0001] This invention relates to a die-cutting machine and its method of use for a cavity EVA sound insulation and sealing device, belonging to the field of plastic molding technology. Background Technology

[0002] Because vehicles travel on various outdoor roads and tracks, they are affected by various road conditions, resulting in vibrations, resonances, and noise. For example, the outer shells of cars, electric cars, high-speed trains, subways, and aircraft have various cavities. When the vehicle body is traveling at high speed, the bypass cavities will generate high-speed airflow, which will bring strong noise and vibration to passengers and drivers.

[0003] Existing technologies generally employ a two-stage injection molding process to form sound insulation devices. The production process involves using a mold to injection mold nylon 66 into a nylon skeleton, which is then placed into an EVA injection mold to produce the finished product. Both processes are completed on separate machines, requiring two different molds. Furthermore, the molds require high precision to prevent bulging or material leakage. As a result, the investment is high, the mold production cycle is long, the injection molding process is complex, the efficiency is low, the scrap rate is high, and the cost is high. Summary of the Invention

[0004] In view of the shortcomings of existing technologies, such as high investment in two processing steps, long mold production cycle, complex injection molding process and high cost, this invention provides a shaping die-cutting machine and its usage method for cavity EVA sound insulation sealing devices. It can continuously shape and cut the molded product in one go, which simplifies the processing and greatly improves production efficiency.

[0005] The technical solution adopted by the present invention to achieve the above objectives is: a shaping die-cutting machine for a cavity EVA sound insulation sealing device, wherein a die-cutting device and a die-cutting blade device are sequentially arranged in the U-shaped groove I of the shaping die-cutting machine frame, and a buffer rubber pad is respectively provided between the needle roller bearing square slide I on both sides of the die-cutting blade device and the needle roller bearing square slide II on both sides of the die-cutting device; the die-cutting blade gear of the die-cutting blade device meshes with the die-cutting lower roller gear of the die-cutting device.

[0006] The frame has a U-shaped groove II in which a traction shaping device II and a traction shaping device I are arranged in sequence. A buffer rubber pad is provided between the needle roller bearing square slides III on both sides of the traction shaping device I and the needle roller bearing square slides IV on both sides of the traction shaping device II. The upper traction gear of the traction shaping device I and the lower traction gear of the traction shaping device II are engaged.

[0007] The lower ends of the four adjusting bolts screwed onto the upper cover of the frame respectively contact and engage with two needle roller bearing square slides I and two needle roller bearing square slides III, for adjusting the gap between the upper roller of the die-cutting device and the lower roller of the die-cutting device, as well as between the upper roller of the traction and shaping device I and the lower roller of the traction and shaping device II.

[0008] A die-cutting frequency-modulated motor connected to a die-cutting motor frequency modulator is connected to the lower die-cutting roller; a traction frequency-modulated motor connected to a traction motor frequency modulator is connected to the lower traction shaping roller; the upper die-cutting roller is provided with at least one set of die cutting edges.

[0009] A method for using a die-cutting machine for cavity EVA sound insulation sealing devices, comprising the following steps:

[0010] Start the traction frequency modulation motor, which drives the traction shaping device II to rotate the lower traction shaping roller. The lower traction shaping roller cooperates with the upper traction gear of the traction shaping device I through the lower traction gear, driving the upper traction shaping roller to rotate simultaneously.

[0011] Start the die-cutting frequency modulation motor, which drives the lower die-cutting roller of the die-cutting device to rotate. The lower die-cutting roller is connected to the upper die-cutting roller through the lower die-cutting roller gear, which drives the upper die-cutting roller to rotate at the same time.

[0012] Feed the EVA semi-finished strip between the upper traction and shaping roller and the lower traction and shaping roller. Adjust the adjusting bolts on the upper end of the square slide block III of the needle roller bearing on both sides of the upper traction and shaping roller clockwise or counterclockwise, so that the gap between the upper traction and shaping roller and the lower traction and shaping roller is less than the thickness of the EVA semi-finished strip. The adjustment of the two adjusting bolts is completed.

[0013] The EVA semi-finished belt is shaped by the mutual rolling of the upper and lower traction shaping rollers and becomes the finished EVA belt. The finished EVA belt is then pulled between the upper and lower die-cutting rollers.

[0014] Adjust the adjusting bolts on the upper end of the square slide block I of the needle roller bearing on both sides of the die-cutting knife device clockwise or counterclockwise, so that at least one set of die cutting edges of the upper roller of the die-cutting knife contacts the lower roller of the die-cutting knife. When at least one set of EVA sound insulation sealing device is cut out, the adjustment of the two adjusting bolts is completed.

[0015] The EVA semi-finished product belt passes sequentially between the traction and shaping upper roller and the traction and shaping lower roller, as well as between the die-cutting upper roller and the die-cutting lower roller, to achieve the rolling cutting of multiple EVA sound insulation and sealing devices, and the scrap belt is then recovered.

[0016] The beneficial effects of this invention are: this invention can continuously complete the shaping and rolling of EVA sound insulation and sealing device in one go, which replaces the shortcomings of the existing technology that requires two injection molding processes to complete the finished product, saving manpower, material resources and costs, and improving production efficiency by more than 80%.

[0017] The die cutting edge provided on the upper roller of the die-cutting blade of this invention can be set according to the shape of the finished product to be cut. When the diameters of the upper roller and the lower roller are the same, only the upper roller needs to be replaced to cut a new finished product. The structure is simple and the process is convenient.

[0018] When applied to a production line, this invention improves production efficiency from raw materials to finished products. Attached Figure Description

[0019] Figure 1 A schematic diagram of the structure of the die-cutting machine of the present invention is provided.

[0020] Figure 2 for Figure 1 Rear view of the structure;

[0021] Figure 3 for Figure 1 Right view of the structure;

[0022] Figure 4 for Figure 1 AA section view of the structure;

[0023] Figure 5 for Figure 1 Structural CC section view;

[0024] Figure 6 This is a schematic diagram of the die-cutting device of the present invention;

[0025] Figure 7 This is a schematic diagram of the die-cutting device of the present invention;

[0026] Figure 8 This is a schematic diagram of the structure of the traction shaping device I of the present invention;

[0027] Figure 9 This is a schematic diagram of the structure of the traction shaping device II of the present invention;

[0028] Figure 10 This is a schematic cross-sectional view of the upper roller of the die-cutting blade of the present invention;

[0029] Figure 11 This is a schematic diagram of the multiple sets of die-cutting blades structure after the upper roller of the die-cutting blade of the present invention is axially expanded 360 degrees.

[0030] Figure 12 This is a schematic diagram of the frame structure of the present invention;

[0031] Figure 13 This is a schematic diagram of the square slide of the needle roller bearing of the present invention;

[0032] Figure 14 Schematic diagram of an embodiment of the present invention;

[0033] Figure 15 This is a schematic diagram of the EVA sound insulation and sealing device for rolling the upper and lower rollers of the die-cutting blade according to an embodiment of the present invention;

[0034] Figure 16 This is a schematic diagram of the EVA sound insulation and sealing device of the present invention;

[0035] Figure 17 for Figure 16 BB section view of the structure;

[0036] Figure 18 This is a schematic diagram of scrap material from an embodiment of the present invention.

[0037] In the diagram: 1. Shaped die-cutting machine; 1-1. Machine frame; 1-1-1. Square column; 1-1-2. Rectangular column; 1-1-3. U-shaped groove I; 1-1-4. U-shaped groove II; 1-1-5. U-shaped groove III; 1-1-6. Motor frame; 1-1-7. Top cover; 1-1-71. Bolt holes; 1-2. Die-cutting blade assembly; 1-2-1. Upper roller of die-cutting blade; 1-2-11. Die-cutting blade edge; 1-2-21. Needle roller bearing I; 1-2-2. Square slide of needle roller bearing I; 1-2-3. Die-cutting blade gear;

[0038] 1-3. Die-cutting device; 1-3-1. Lower die-cutting roller; 1-3-21. Needle roller bearing II; 1-3-2. Needle roller bearing square slide II; 1-3-3. Lower die-cutting roller gear; 1-4. Traction and shaping device I; 1-4-1. Upper traction and shaping roller; 1-4-21. Needle roller bearing III; 1-4-2. Needle roller bearing square slide III; 1-4-3. Upper traction gear; 1-5. Traction and shaping device II; 1-5-1. Lower traction and shaping roller; 1-5-21. Needle roller bearing IV; 1-5-2. Needle roller bearing square slide IV; 1-5-3. Lower traction gear; 1-14. Bearing hole 1-15. Groove; 1-6. Buffer pad; 1-7. Adjusting bolt; 1-8. Bolt and nut; 1-9. Die-cutting frequency-modulated motor; 1-10. Traction frequency-modulated motor; 1-11. Die-cutting motor frequency converter; 1-12. Traction motor frequency converter; 1-13. Motor coupling; 2. Unwinding machine; 3. Mesh metal sheet coil; 3-1. EVA finished strip; 3-2. EVA sound insulation and sealing device; 3-3. Scrap strip; 4. Leveling machine; 5. Guide rail; 6. Mold; 7. Extruder; 8. Air cooling device; 9. Finished product box; 10. Scrap removal machine; 11. Constant temperature oil circulation machine. Detailed Implementation

[0039] like Figures 1 to 5 As shown, a die-cutting machine for a cavity EVA sound insulation sealing device is provided. The die-cutting machine 1 includes a frame 1-1, a die-cutting blade device 1-2, a die-cutting device 1-3, a traction and shaping device I 1-4, a traction and shaping device II 1-5, a buffer pad 1-6, an adjusting bolt 1-7, a bolt and nut 1-8, a die-cutting frequency-modulated motor 1-9, a traction frequency-modulated motor 1-10, a die-cutting motor frequency modulator 1-11, a traction motor frequency modulator 1-12, and a motor coupling 1-13.

[0040] like Figure 6As shown, the die-cutting device 1-2 includes a die-cutting upper roller 1-2-1, two needle roller bearing square slides I1-2-2, needle roller bearings I1-2-21, and a die-cutting gear 1-2-3. A needle roller bearing I1-2-21 is installed in the bearing holes 1-14 of each of the two needle roller bearing square slides I1-2-2. The shaft at one end of the die-cutting upper roller 1-2-1 is positioned in the needle roller bearing I1-2-21 of one side of the needle roller bearing square slide I1-2-2. The shaft at the other end of the die-cutting upper roller 1-2-1 passes through the needle roller bearing I1-2-21 of the other side of the needle roller bearing square slide I1-2-2 and is positioned in the shaft hole of the die-cutting gear 1-2-3. The die-cutting gear 1-2-3 is fixed to the shaft of the die-cutting upper roller 1-2-1 by a key.

[0041] like Figure 7 As shown, the die-cutting device 1-3 includes a die-cutting lower roller 1-3-1, two needle roller bearing square slides II1-3-2, a needle roller bearing II1-3-21, and a die-cutting lower roller gear 1-3-3. A needle roller bearing II1-3-21 is installed in the bearing hole 1-14 of each of the two needle roller bearing square slides II1-3-2. The shaft at one end of the die-cutting lower roller 1-3-1 is located in the needle roller bearing II1-3-21 of one side of the needle roller bearing square slide II1-3-2. The shaft at the other end of the die-cutting lower roller 1-3-1 passes through the needle roller bearing II1-3-21 of the other side of the needle roller bearing square slide II1-3-2 and extends out of the shaft hole of the die-cutting lower roller gear 1-3-3. The die-cutting lower roller gear 1-3-3 is fixed to the shaft of the die-cutting lower roller 1-3-1 by a key.

[0042] like Figure 8 As shown, the traction and shaping device I1-4 includes a traction and shaping upper roller 1-4-1, two needle roller bearing square slides III1-4-2, a needle roller bearing III1-4-21, and a traction upper gear 1-4-3. A needle roller bearing III1-4-21 is installed in the bearing hole 1-14 of each of the two needle roller bearing square slides III1-4-2. The shaft at one end of the traction and shaping upper roller 1-4-1 is set in the needle roller bearing III1-4-21 of one side of the needle roller bearing square slide III1-4-2. The shaft at the other end of the traction and shaping upper roller 1-4-1 passes through the needle roller bearing III1-4-21 of the other side of the needle roller bearing square slide III1-4-2 and is set in the shaft hole of the traction upper gear 1-4-3. The traction upper gear 1-4-3 is fixed to the shaft of the traction and shaping upper roller 1-4-1 by a key.

[0043] like Figure 9As shown, the traction and shaping device II1-5 includes a traction and shaping lower roller 1-5-1, two needle roller bearing square slides IV1-5-2, a needle roller bearing IV1-5-21, and a traction lower gear 1-5-3. A needle roller bearing IV1-5-21 is installed in the bearing holes 1-14 of the two needle roller bearing square slides IV1-5-2. The shaft at one end of the traction and shaping lower roller 1-5-1 is located in the needle roller bearing IV1-5-21 of one side of the needle roller bearing square slide IV1-5-2. The shaft at the other end of the traction and shaping lower roller 1-5-1 passes through the needle roller bearing IV1-5-21 of the other side of the needle roller bearing square slide IV1-5-2 and extends out of the shaft hole of the traction lower gear 1-5-3. The traction lower gear 1-5-3 is fixed to the shaft of the traction and shaping lower roller 1-5-1 by a key.

[0044] like Figure 12 As shown, the base of the frame 1-1 is provided with four square columns 1-1-1 and two rectangular columns 1-1-2. The two sides of the two rectangular columns 1-1-2 are connected to the corresponding sides of the two square columns 1-1-1 by U-shaped grooves I 1-1-3 and II 1-1-4. Each pair of adjacent square columns 1-1-1 is connected by U-shaped groove III 1-1-5.

[0045] like Figure 13 As shown, the square slide I1-2-2 of the needle roller bearing is a rectangular body with a bearing hole 1-14 communicating on both sides of the rectangular body, and grooves 1-15 on the front and back of the rectangular body respectively; the square slides II1-3-2, III1-4-2 and IV1-5-2 of the needle roller bearing have the same structure as the square slide I1-2-2 of the needle roller bearing.

[0046] like Figures 1 to 13 As shown, a die-cutting device 1-3 and a die-cutting blade device 1-2 are sequentially arranged in the U-shaped groove Ⅰ1-1-3 of the frame 1-1. Specifically, the needle roller bearing square slides Ⅱ1-3-2 on both sides of the die-cutting device 1-3 and the needle roller bearing square slides Ⅰ1-2-2 on both sides of the die-cutting blade device 1-2 are inserted into the two square columns 1-1-1 and two rectangular columns 1-1-2 of the U-shaped groove Ⅰ1-1-3 of the frame 1-1 through grooves 1-15 on both sides. The lower die-cutting roller 1-3-1 of the die-cutting device 1-3 and the upper die-cutting roller 1-2 of the die-cutting blade device 1-2 are respectively inserted into the grooves 1-15 on both sides of the frame 1-1. 2-1 are respectively set in U-shaped groove Ⅲ1-1-5, the upper roller 1-2-1 of the die-cutting blade and the lower roller 1-3-1 of the die-cutting blade are in clearance fit, and the gear 1-2-3 of the die-cutting blade is meshed with the gear 1-3-3 of the lower roller of the die-cutting blade; between the two square slides Ⅰ1-2-2 and Ⅱ1-3-2 of the needle roller bearing respectively, a buffer pad 1-6 is provided; the two square slides Ⅰ1-2-2 of the needle roller bearing can move up and down through the grooves 1-15 on both sides and the cooperation of the two square columns 1-1-1 and the two rectangular columns 1-1-2.

[0047] Traction shaping device II1-5 and traction shaping device I1-4 are sequentially arranged in the U-shaped groove II1-1-4 of frame 1-1. Specifically, the needle roller bearing square slides IV1-5-2 on both sides of traction shaping device II1-5 and the needle roller bearing square slides III1-4-2 on both sides of traction shaping device I1-4 are inserted between two square columns 1-1-1 and two rectangular columns 1-1-2 in the U-shaped groove II1-1-4 of frame 1-1 through grooves 1-15 on both sides. The traction shaping lower roller 1-5-1 of traction shaping device II1-5 and the traction shaping roller of traction shaping device I1-4... The upper shaping roller 1-4-1 is respectively set in the U-shaped groove Ⅲ1-1-5. The upper shaping roller 1-4-1 and the lower shaping roller 1-5-1 are in clearance fit. The upper traction gear 1-4-3 and the lower traction gear 1-5-3 are meshed. Between the two correspondingly set needle roller bearing square slides Ⅲ1-4-2 and Ⅳ1-5-2, a buffer pad 1-6 is provided respectively. The two needle roller bearing square slides Ⅲ1-4-2 can move up and down through the grooves 1-15 on both sides and the cooperation of the two square columns 1-1-1 and the two rectangular columns 1-1-2.

[0048] After screwing a bolt nut 1-8 onto each of the four adjusting bolts 1-7, they are screwed together with the four bolt holes 1-1-71 of the upper cover 1-1-7 of the frame 1-1. The lower ends of two adjusting bolts 1-7 are in contact with the square slides of the needle roller bearings I 1-2-2 on both sides of the upper roller 1-2-1 of the die-cutting knife, and the lower ends of the other two adjusting bolts 1-7 are in contact with the square slides of the needle roller bearings III 1-4-2 on both sides of the upper roller 1-4-1 of the traction and shaping roller.

[0049] When the four adjusting bolts 1-7 are adjusted clockwise, the buffer pads 1-6 set between the two needle roller bearing square slides I 1-2-2 and II 1-3-2, and between the two needle roller bearing square slides III 1-4-2 and IV 1-5-2 are compressed, causing the gap between the upper die-cutting roller 1-2-1 and the lower die-cutting roller 1-3-1, and between the upper traction and shaping roller 1-4-1 and the lower traction and shaping roller 1-5-1 to gradually decrease. After the adjusted distance is determined, the locking bolts and nuts 1-8 are tightened to lock the determined gap.

[0050] Loosen the four bolts and nuts 1-8 counterclockwise. When the four adjusting bolts 1-7 are adjusted counterclockwise, the buffer pads 1-6 set between the two needle roller bearing square slides I 1-2-2 and II 1-3-2, and between the two needle roller bearing square slides III 1-4-2 and IV 1-5-2 will expand. This will cause the gap between the upper die-cutting roller 1-2-1 and the lower die-cutting roller 1-3-1, and between the upper traction and shaping roller 1-4-1 and the lower traction and shaping roller 1-5-1 to gradually increase. The size of the gap adjustment is determined according to the thickness of the EVA sound insulation sealing device 3-2.

[0051] The die-cutting frequency-modulated motor 1-9 and the traction frequency-modulated motor 1-10 are respectively fixed on the motor frame 1-1-6 of the machine frame 1-1. The die-cutting frequency-modulated motor 1-9 is connected to the shaft of the die-cutting lower roller 1-3-1 through the motor coupling 1-13, and the traction frequency-modulated motor 1-10 is connected to the shaft of the traction shaping lower roller 1-5-1 through the motor coupling 1-13. The die-cutting motor frequency modulator 1-11 is connected to the die-cutting frequency-modulated motor 1-9 through the connecting line, and the traction motor frequency modulator 1-12 is connected to the traction frequency-modulated motor 1-10 through the connecting line. At least one set of die cutting edges 1-2-11 is provided on the upper roller 1-2-1 of the die-cutting blade.

[0052] like Figure 10 , Figure 11 As shown, a set of mold cutting edges 1-2-11 are triangular cutting edges in the shape of an EVA sound insulation sealing device. The included angle of the triangular cutting edge is 28 degrees and the height of the triangular cutting edge is 3mm.

[0053] Example 1, such as Figures 14 to 18As shown, firstly, the rotation speed of the traction frequency modulation motor 1-10 is set to synchronize with the linear speed of the EVA semi-finished product belt extruded by the die 6 via the traction motor frequency modulator 1-12; then, the rotation speed of the die-cutting frequency modulation motor 1-9 is set to synchronize with the linear speed of the EVA finished product belt 3-1 after being shaped by the upper traction shaping roller 1-4-1 and the lower traction shaping roller 1-5-1 via the traction motor frequency modulator 1-12; the traction frequency modulation motor 1-10 is started via the traction motor frequency modulator 1-12, and the traction frequency modulation motor 1-10 drives the traction shaping device II 1-5 to rotate the lower traction shaping roller 1-5-1. The lower traction gear 1-5-3 engages with the upper traction gear 1-4-3 of the traction and shaping device I 1-4 to simultaneously rotate the upper traction and shaping roller 1-4-1; the die-cutting frequency modulation motor 1-9 is started by the die-cutting motor frequency modulator 1-11, and the die-cutting frequency modulation motor 1-9 drives the lower die-cutting roller 1-3-1 of the die-cutting device 1-3 to rotate. The lower die-cutting roller 1-3-1, through the engagement of the lower die-cutting roller gear 1-3-3 and the upper die-cutting roller 1-2-1's die-cutting blade gear 1-2-3, simultaneously rotates the upper die-cutting roller 1-2-1; the EVA semi-finished product strip is fed into the upper traction and shaping roller 1-4-1 and the lower traction and shaping roller. Between 1-5-1, adjust the adjusting bolts 1-7 on the upper end of the square slide block Ⅲ 1-4-2 of the needle roller bearings on both sides of the upper traction and shaping roller 1-4-1 clockwise or counterclockwise to make the gap between the upper traction and shaping roller 1-4-1 and the lower traction and shaping roller 1-5-1 2.5mm. Then tighten the bolts and nuts 1-8 clockwise. Position the adjusting bolts 1-7 through the bolts and nuts 1-8 to lock the gap. The adjustment of the two adjusting bolts 1-7 is now complete. The EVA semi-finished belt becomes the finished EVA belt after being shaped by the mutual rolling of the upper traction and shaping roller 1-4-1 and the lower traction and shaping roller 1-5-1. -1. Simultaneously, pull the EVA finished product belt 3-1 between the upper roller 1-2-1 and the lower roller 1-3-1 of the die-cutting blade; then adjust the adjusting bolts 1-7 on the upper end of the square slide block I 1-2-2 of the needle roller bearing on both sides of the die-cutting blade device 1-2 clockwise or counterclockwise, so that at least one set of die blades 1-2-11 of the upper roller 1-2-1 of the die-cutting blade contacts the lower roller 1-3-1 of the die-cutting blade. When at least one set of EVA sound insulation sealing device 3-2 is cut out, tighten the bolt nut 1-8, and use the bolt nut 1-8 to position the adjusting bolt 1-7 to lock the gap after it is determined. The adjustment of the two adjusting bolts 1-7 is completed.

[0054] The specific die-cutting process for the EVA sound insulation and sealing device is as follows: A 200mm wide, 0.2mm thick, and 400mm long mesh metal sheet roll 3 is fed onto the unwinding machine 2. The leveled mesh metal sheet is then fed through guide rail 5 into a mold 6 heated by a constant-temperature oil circulation machine 11. The mold 6 is heated to 70-80 degrees Celsius. Simultaneously, an extruder 7 extrudes EVA raw material into the mold 6. The extruder 7 reaches a temperature of 60-70 degrees Celsius, melting the EVA. The mold 6 then wraps the melted EVA raw material around the mesh metal sheet roll 3, extruding an EVA semi-finished strip. The thickness of the EVA semi-finished strip is greater than 2.5mm. After being cooled by an air-cooling device 8, the EVA semi-finished strip is fed into the die-cutting machine 1, where it is pulled and shaped by the upper roller. Between rollers 1-4-1 and traction shaping roller 1-5-1, after the traction shaping rollers 1-4-1 and traction shaping roller 1-5-1 roll against each other, they are shaped into EVA finished strips 3-1 with a thickness of 2.5mm. The EVA finished strips 3-1 are drawn into the space between the die-cutting rollers 1-2-1 and 1-3-1. Through the rolling cooperation between at least one set of die cutters 1-2-11 of the die-cutting roller 1-2-1 and the die-cutting roller 1-3-1, multiple EVA sound insulation sealing devices 3-2 are cut out. The EVA sound insulation sealing devices 3-2 then fall into the finished product box 9. The scrap strips 3-3 after the EVA sound insulation sealing devices 3-2 are cut out are wound into a reel by the scrap cutting machine 10. The thickness of the EVA sound insulation sealing devices 3-2 is 2.5mm.

Claims

1. A die-cutting machine for a cavity EVA sound insulation sealing device, characterized in that: A die-cutting device and a die-cutting blade device are sequentially arranged in the U-shaped groove I of the die-cutting machine frame. A buffer pad is provided between the needle roller bearing square slide I on both sides of the die-cutting blade device and the needle roller bearing square slide II on both sides of the die-cutting device. The die-cutting blade gear of the die-cutting blade device meshes with the die-cutting lower roller gear of the die-cutting device. A traction and shaping device II and a traction and shaping device I are sequentially arranged in the U-shaped groove II of the frame. A buffer pad is provided between the needle roller bearing square slide III on both sides of the traction and shaping device I and the needle roller bearing square slide IV on both sides of the traction and shaping device II. The traction and shaping device I pulls the upper... The gear meshes with the traction and shaping device II's lower gear; the lower ends of the four adjusting bolts screwed onto the upper cover of the frame respectively contact and engage with two needle roller bearing square slides I and two needle roller bearing square slides III, for adjusting the gap between the upper roller of the die-cutting device and the lower roller of the die-cutting device, and between the upper roller of the traction and shaping device I and the lower roller of the traction and shaping device II; the die-cutting frequency-modulated motor connected to the die-cutting motor frequency modulator is connected to the lower roller of the die-cutting device; the traction frequency-modulated motor connected to the traction motor frequency modulator is connected to the lower roller of the traction shaping device; the upper roller of the die-cutting device is provided with at least one set of die cutting edges; The die-cutting device includes a die-cutting upper roller, a needle bearing square slide I with a needle bearing I installed, and a die-cutting gear. The shaft at one end of the die-cutting upper roller is set in the needle bearing I of the needle bearing square slide I on one side, and the shaft at the other end of the die-cutting upper roller passes through the needle bearing I of the needle bearing square slide I on the other side and is fixed to the die-cutting gear. The die-cutting device includes a die-cutting lower roller, a square slide block II with needle roller bearing II and a die-cutting lower roller gear. The shaft at one end of the die-cutting lower roller is set in the square slide block II with needle roller bearing II on one side, and the shaft at the other end of the die-cutting lower roller passes through the square slide block II with needle roller bearing II on the other side and is fixed to the die-cutting lower roller gear. The traction and shaping device I includes a traction and shaping upper roller, a needle bearing square slide III with a needle bearing III installed, and a traction upper gear. The shaft at one end of the traction and shaping upper roller is set in the needle bearing III of the needle bearing square slide III on one side, and the shaft at the other end of the traction and shaping upper roller passes through the needle bearing III of the needle bearing square slide III on the other side and is fixed to the traction upper gear. The traction and shaping device II includes a traction and shaping lower roller, a needle bearing square slide block IV with a needle bearing IV installed, and a traction lower gear. The shaft at one end of the traction and shaping lower roller is set in the needle bearing IV of the needle bearing square slide block IV on one side, and the shaft at the other end of the traction and shaping lower roller passes through the needle bearing IV of the needle bearing square slide block IV on the other side and is fixed to the traction lower gear. The set of mold cutting edges are triangular cutting edges in the shape of EVA sound insulation and sealing devices, with an included angle of 28 degrees and a height of 3mm.

2. The die-cutting machine for a cavity EVA sound insulation sealing device according to claim 1, characterized in that: The frame base is provided with four square columns and two rectangular columns. The two sides of the two rectangular columns are connected to the corresponding sides of the two square columns by U-shaped grooves I and II, and there is a U-shaped groove III between every two square columns.

3. The die-cutting machine for a cavity EVA sound insulation sealing device according to claim 1, characterized in that: The needle roller bearing square slide I is a rectangular body with connecting bearing holes on both sides and grooves on the front and back. The needle roller bearing square slides II, III and IV have the same structure as the needle roller bearing square slide I.

4. A method of using a die-cutting machine for a cavity EVA sound insulation and sealing device as described in any one of claims 1 to 3, characterized in that, The steps are as follows: A traction frequency-modulated motor drives the traction and shaping device II to rotate the lower traction and shaping roller. The lower traction and shaping roller engages with the upper traction gear of the traction and shaping device I through a lower traction gear, causing the upper traction and shaping roller to rotate simultaneously. A die-cutting frequency-modulated motor drives the die-cutting device to rotate the lower die-cutting roller. The lower die-cutting roller engages with the die-cutting blade gear of the upper die-cutting roller through a lower die-cutting roller gear, causing the upper die-cutting blade roller to rotate simultaneously. The EVA semi-finished strip is fed between the upper and lower traction and shaping rollers. The adjusting bolts on the upper end of the needle roller bearing square slide block III on both sides of the upper traction and shaping roller are adjusted clockwise or counterclockwise to ensure that the gap between the upper and lower traction and shaping rollers is less than the thickness of the EVA semi-finished strip. The adjustment of the two adjusting bolts is completed; the EVA semi-finished strip becomes the EVA finished strip after being shaped by the mutual rolling of the upper and lower traction shaping rollers. The EVA finished strip is then pulled between the upper and lower die-cutting rollers. The adjusting bolts on the upper end of the square slide block I of the needle roller bearing on both sides of the die-cutting device are adjusted clockwise or counterclockwise respectively, so that at least one set of die blades on the upper die-cutting roller contacts the lower die-cutting roller. When at least one set of EVA sound insulation sealing devices is cut out, the adjustment of the two adjusting bolts is completed. The EVA semi-finished strip passes sequentially between the upper and lower traction shaping rollers and between the upper and lower die-cutting rollers, realizing the cutting out of multiple sets of at least one EVA sound insulation sealing devices. The scrap strip is then retracted.

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