Scratch preventing device used before continuous sheet strip stamping feeding

Abstract

The invention relates to the technical field of sheet production, and particularly discloses an anti-scratching device used before stamping and feeding of a continuous sheet strip. The rolling shafts are rotationally connected to the support, and the multiple rolling shafts are arranged in parallel at intervals; the guide plates are arranged on the support, and the guide plates are arranged above the rolling shafts at intervals, so that the sheets pass through the space between the rolling shafts and the guide plates, and the sheets are supported through the rolling shafts; and the fastener is arranged between the guide plate and the bracket and is used for adjusting the distance between the guide plate and the rolling shaft. According to the sheet conveying device, sheets are supported through the rolling shafts, vertical jumping of the sheets is limited through the guide plates, shaking of the sheets in the conveying process can be weakened, and therefore friction between the sheets and a feeding port of a punching machine is reduced, and the scratching risk is reduced; in addition, jumping of the sheet can be weakened by blowing air to the surface of the sheet, so that the risk that the sheet is scratched is further reduced.

Description

Technical Field

[0001] The present application relates to the technical field of sheet material production, and in particular to an anti-scratch device before punching and feeding of a continuous sheet material strip. Background Art

[0002] In the field of sheet production technology, stamping technology is one of the important means to achieve material forming. With the improvement of industrial automation level, stamping technology has played an important role in improving production efficiency and reducing manufacturing costs. However, in the process of continuous sheet strip stamping, how to ensure the surface quality of the sheet has always been one of the core issues of concern to the industry. Especially in the scenario of high precision and high quality requirements, any damage to the sheet surface will directly affect the final performance and market competitiveness of the product.

[0003] After the sheet is punched by the punching machine, the violent vibration of the punching machine will cause the continuous sheet to shake up and down before entering the punching machine, making it easy for the sheet to rub against the feed port of the punching machine and scratch the surface of the sheet. The scratched sheet will become waste when the quality requirements are strict, resulting in a decrease in the qualified rate of the punched products. Summary of the invention

[0004] In order to reduce the possibility of the sheet being scratched before punching, the present application provides an anti-scratch device before punching and feeding of a continuous sheet strip.

[0005] The present application provides a scratch-proof device for continuous sheet strip before punching and feeding, which adopts the following technical solution: A scratch prevention device for a continuous sheet strip before punching and feeding, comprising a bracket; A roller, rotatably connected to the bracket, wherein a plurality of rollers are provided and arranged in parallel at intervals; A guide plate is arranged on the bracket, and the guide plate is arranged above the roller at intervals, so that the sheet passes between the roller and the guide plate and is supported by the roller; A fastener is arranged between the guide plate and the bracket and is used for adjusting the distance between the guide plate and the roller.

[0006] By adopting the above technical scheme, the sheet is located between the roller and the guide plate, the roller can support the sheet, and the guide plate and the sheet are arranged at a distance, thereby limiting the vertical jump of the sheet and reducing the violent up and down shaking of the sheet caused by the vibration of the punch, thereby reducing the possibility of scratching the surface of the sheet due to friction between the sheet and the feed port of the punch; the roller is arranged to rotate, thereby reducing the friction between the roller and the sheet, thereby reducing the possibility of scratching the surface of the sheet; the setting of the fastener makes the spacing between the guide plate and the roller adjustable, which can adapt to sheets of different thicknesses, further improving the applicability of the device, ensuring that the sheet remains stable during transportation, reducing the risk of scratching, and improving the qualified rate of stamping products.

[0007] Optionally, the bracket includes a base, a support rod, a chuck and a tray. The support rod is disposed on the base. The chuck is slidably inserted through the support rod. A locking bolt is provided on the chuck, and the locking bolt is used to drive the chuck to tightly press and fix on the support rod. The tray is fixedly connected to the chuck. Both the roller and the guide plate are disposed on the tray.

[0008] By adopting the above technical solution, the height of the chuck can be adjusted and fixed on the support rod through the locking bolt, so as to realize the adjustment of the height of the tray, thus facilitating the adjustment according to the height where the sheet material is located and making the use more convenient.

[0009] Optionally, a connecting block is provided on the tray, and the connecting block is used for fixedly connecting with another tray equipped with a roller and a guide plate.

[0010] By adopting the above technical solution, the provision of the connecting block enables multiple trays to be fixedly connected to each other, so as to realize the combined use of multiple sets of rollers and guide plates; this design can flexibly increase or decrease the number of trays according to actual production requirements, and then adjust the length and processing capacity of the device, effectively adapting to the processing requirements of sheet materials of different specifications and lengths, and enhancing the versatility and expandability of the device.

[0011] Optionally, the tray is provided with a hollow structure.

[0012] By adopting the above technical solution, the tray being provided with a hollow structure can effectively reduce the overall weight of the tray, thereby reducing the material cost and manufacturing difficulty of the entire device; in addition, the hollow design helps to reduce material accumulation, improve the heat dissipation performance, avoid the problem of heat accumulation caused by long-term operation, and thus extend the service life of the device; the hollow structure also facilitates observing the internal situation of the tray, which is convenient for daily maintenance and cleaning.

[0013] Optionally, exhaust holes are provided on the guide plate, an air pump is provided on one side of the bracket, one end of the exhaust hole is communicated with the air pump, and the other end of the exhaust hole faces the roller.

[0014] By adopting the above technical solution, the exhaust holes on the guide plate are communicated with the air pump, and can blow air towards the roller direction, weakening the jumping of the sheet material, making the sheet material not easily come into direct contact with the guide plate, thereby enhancing the anti-scratching effect; even if the sheet material comes into contact with the guide plate, since the blown air can exert a downward force on the sheet material, the upward jumping speed of the sheet material can be reduced, thereby weakening the impact between the sheet material and the guide plate, and thus reducing the possibility of scratching; the exhausted gas can also form an air flow layer on the surface of the sheet material, and this air flow layer effectively reduces the direct contact between the sheet material and the guide plate, thereby reducing the scratching risk caused by friction and improving the surface quality of the sheet material; at the same time, the presence of the air flow can also play a certain cleaning role, further ensuring the integrity of the sheet material during the feeding process.

[0015] Optionally, the guide plate includes a fixed plate and a movable plate, the fixed plate is fixedly connected to the bracket, a receiving groove is provided on the fixed plate, the top of the movable plate is slidably connected to the receiving groove, the air outlet end of the air pump is connected to the inside of the receiving groove, and the exhaust hole is arranged on the movable plate so that the gas discharged from the air pump flows into the receiving groove and is discharged through the exhaust hole.

[0016] By adopting the above technical scheme, for thinner sheets, the air blowing through the exhaust holes is sufficient to reduce the bouncing of the sheet, thereby protecting the sheet through the air flow layer and reducing the possibility of scratches when the sheet and the guide plate come into contact; for thicker sheets, the same amount of air blowing is not enough to suppress the bouncing of the sheet, so the movable plate can be pushed upward when the sheet jumps upward, and since the gas is continuously introduced into the receiving groove, the gas stored in the receiving groove can generate a downward thrust on the movable plate, so when the movable plate is pushed upward, the gas stored in the receiving groove can play a buffering role to avoid hard contact between the sheet and the movable plate, and at the same time, the buffering process can also consume part of the kinetic energy of the sheet, further reducing the bouncing of the sheet and enhancing the anti-scratch effect; the gas pressure in the receiving groove is dynamically adjusted with the bouncing of the sheet to form an air cushion spring effect, and the kinetic energy dissipation is more efficient; therefore, the split design of the guide plate is combined with the blowing process of the air pump, and when the blowing volume remains unchanged, the bouncing of the sheet can still be well reduced, thereby ensuring the anti-scratch effect.

[0017] Optionally, a partition is provided in the receiving groove, and the partition is provided in plurality and arranged at intervals along the length direction of the receiving groove, and the partition divides the receiving groove into a plurality of receiving chambers, and the movable plate includes a plurality of movable blocks, and the number of the movable blocks is the same as the number of the receiving chambers, and each of the movable blocks is slidably connected to the corresponding receiving chamber, and the exhaust hole is provided through the movable block.

[0018] By adopting the above technical solution, after a part of the sheet lifts up the corresponding movable block, the remaining movable blocks can remain in their original state, and the lifted movable blocks will not affect the limiting effect of other parts of the guide plate on the sheet jumping, thereby being able to limit the jumping of multiple parts of the sheet at the same time; the difference in jumping between the edge and center areas of the sheet can be responded to independently by different movable blocks, avoiding secondary scratches caused by the tilt of the overall guide plate.

[0019] Optionally, a connecting rod is provided on one of the movable blocks, and a limiting groove is opened on the movable block adjacent to the movable block provided with the connecting rod, the limiting groove is arranged along the sliding direction of the movable block, and the connecting rod is used to abut against the end of the limiting groove so that one of the movable blocks slides a certain distance and then drives the adjacent movable block to slide.

[0020] By adopting the above technical solution, the connecting rod on the movable block cooperates with the limiting groove on the adjacent movable block, which can limit the sliding distance of the movable block and prevent one of the movable blocks from being lifted too much, so as to avoid scratching the sheet material at the edge of the notch at the bottom of the movable block. In addition, when one of the movable blocks is lifted by the jumping sheet material, after this movable block moves up a certain distance, it can drive the two adjacent movable blocks to move upward. At this time, the gas in the accommodating cavities at the tops of the three movable blocks can all play a buffering role, which can enhance the buffering effect and energy consumption effect, and help to further weaken the jumping of the sheet material.

[0021] Optionally, a rounded corner is provided at one end of the movable block away from the fixed plate.

[0022] By adopting the above technical solution, the friction and scratching generated when the movable block contacts the sheet material during the sliding process can be effectively reduced, thereby further protecting the integrity of the sheet material surface and improving the qualified rate of the product.

[0023] Optionally, a spraying assembly for spraying coolant on the sheet material on the roller is provided on one side of the bracket.

[0024] By adopting the above technical solution, the spraying assembly can spray coolant on the sheet material on the roller to ensure its processing quality in the subsequent stamping process. In addition, the sprayed coolant can also form a protective film on the surface of the sheet material to enhance the surface strength and wear resistance of the sheet material, thereby further improving the quality and service life of the sheet material. The gas discharged from the exhaust hole blows towards the sheet material, and can also preliminarily cool the sheet material. Combined with the subsequent spraying coolant, secondary cooling is achieved to further protect the sheet material. The spraying liquid and the air blowing of the air pump form a gas-liquid two-phase cooling. While quickly cooling down, the liquid lubrication is used to further reduce the friction, which helps to ensure the subsequent forming quality.

[0025] In summary, the present application includes the following beneficial technical effects: 1. The roller supports the sheet material, and the vertical jumping of the sheet material is restricted by the guide plate, which can weaken the shaking of the sheet material during the conveying process, thereby reducing the friction between the sheet material and the feeding port of the stamping machine and reducing the risk of scratching.

[0026] 2. For thinner sheet materials, a gas film can be formed on the sheet material by the exhaust of the exhaust hole to reduce the direct contact between the sheet material and the guide plate, thereby weakening the jumping of the sheet material and ensuring the anti-scratching effect; for thicker sheet materials, through the cooperation of the gas film buffer and the movable block buffer, a multi-level protection is formed, thereby further weakening the jumping of the sheet material and ensuring the anti-scratching effect; the exhaust volume of the air pump does not need to be adjusted according to the thickness of the sheet material, so it is more convenient, and the exhaust volume does not need to increase with the increase of the sheet material thickness, which helps to reduce the cost.

[0027] 3. By compressing the gas in the accommodation cavity and mechanically sliding the movable block, the kinetic energy of the sheet jumping is converted into heat energy dissipation, and the stability is far beyond that of a single buffer design; the heat generated during the sliding process of the movable block can be discharged through the gas, so that the heat is not easily accumulated, thus ensuring the service life.

[0028] 4. The independent response of multiple movable blocks and the dynamic regulation of air flow enable the device to adapt to the random jumping mode of the sheet without additional sensors or control systems. Brief Description of the Drawings

[0029] Figure 1 is a schematic structural view of Embodiment 1 of the present application; Figure 2 is a left view of Embodiment 1 of the present application; Figure 3 is a schematic structural view of Embodiment 1 of the present application for showing the installation position of the guide plate; Figure 4 is a schematic structural view of Embodiment 1 of the present application for showing the tray; Figure 5 is a schematic overall structural view of Embodiment 2 of the present application; Figure 6 is a sectional view of Embodiment 2 of the present application; Figure 7 is Figure 6 an enlarged schematic view of part A in Figure 8 is a sectional view of Embodiment 2 of the present application for showing the slider and the chute.

[0030] Reference Numerals: 1, bracket; 11, base; 12, support rod; 13, chuck; 131, clamping block; 1311, perforation; 1312, avoidance groove; 132, locking bolt; 133, sleeve; 1331, knob; 14, tray; 141, support plate; 2, roller; 3, guide plate; 31, mounting hole; 32, fixing plate; 321, air inlet hole; 322, flow channel; 33, movable block; 331, connecting rod; 332, limiting groove; 333, rounded corner; 334, slider; 4, fastening bolt; 5, connecting block; 6, exhaust hole; 7, air pump; 8, partition board; 9, accommodation cavity; 91, chute; 10, spraying assembly; 101, liquid storage tank; 102, pump body; 103, nozzle; 15, exhaust pipe; 16, sheet. Detailed Description of the Embodiments

[0031] The following Figures 1 - 8 further describes the present application in detail.

[0032] Embodiment 1 The embodiment of the present application discloses a scratch-proof device for continuous sheet strip before punching and feeding. The scratch-proof device is arranged between the conveying device and the feeding port of the punching machine to play a guiding conveying effect. Figure 1 The anti-scratch device before the continuous sheet strip is punched and fed includes a bracket 1, a roller 2 and a guide plate 3. The bracket 1 includes a base 11, a support rod 12, a chuck 13 and a tray 14. The support rod 12 is vertically fixedly connected to the base 11, and the chuck 13 is slidably penetrated on the support rod 12 along the vertical direction. The chuck 13 includes two integrally formed clamping blocks 131, and a through hole 1311 is formed between the two clamping blocks 131 for the support rod 12 to pass through; an avoidance groove 1312 is also provided between the two clamping blocks 131, and the avoidance groove 1312 is connected to the through hole 1311. The two clamping blocks 131 are respectively provided with a locking bolt 132 and a sleeve 133 at the avoidance groove 1312, and the locking bolt 132 is penetrated in the two clamping blocks 131, and the sleeve 133 is provided with an internal thread matched with the locking bolt 132 inside, and the sleeve 133 is threadedly connected with the locking bolt 132. The end of the sleeve 133 is fixedly mounted with a knob 1331, so by tightening the knob 1331, the two clamping blocks 131 can be pressed against the two sides of the support rod 12, thereby fixing the clamp 13 at a desired height; thus, the installation height of the clamp 13 can be adjusted as needed. The tray 14 is fixedly connected to the clamp 13, and the plate surface of the tray 14 is arranged horizontally.

[0033] Reference Figure 1 and Figure 2 The roller 2 is arranged horizontally, and there are multiple rollers 2 arranged in parallel at intervals; the roller 2 is rotatably connected to the tray 14, and the roller 2 is used to support the sheet 16. The tray 14 is also fixedly mounted with a support plate 141, and the support plate 141 is arranged above the roller 2 at intervals; the guide plate 3 is arranged at one end of the support plate 141, and the guide plate 3 is arranged along the arrangement direction of the roller 2. The bottom wall of the guide plate 3 and the top surface of the roller 2 are arranged at intervals, so when the sheet 16 passes over the roller 2, the top surface of the sheet 16 and the bottom wall of the guide plate 3 are arranged at intervals, so that the vertical jump of the sheet 16 is limited by the guide plate 3, which can reduce the possibility of the sheet 16 being scratched by the feed port of the punching machine during transportation.

[0034] Reference Figure 3 A fastener is provided between the guide plate 3 and the support plate 141, and the fastener includes a fastening bolt 4. A threaded hole is provided at the end of the support plate 141, and a mounting hole 31 is provided on the guide plate 3. The mounting hole 31 is a bar-shaped hole and is arranged obliquely; the fastening bolt 4 is passed through the mounting hole 31 and is threadedly connected with the threaded hole, so after the guide plate 3 is moved to a desired height, the fastening bolt 4 is rotated and tightened, and the guide plate 3 can be fixed at the desired height, so that the distance between the guide plate 3 and the roller 2 can be adjusted easily, and it can be suitable for sheets 16 of different thicknesses.

[0035] A connecting block 5 is fixedly connected to the bottom wall of one side of the tray 14 by bolts, so that another tray 14 provided with rollers 2 and guide plates 3 can be installed on the connecting block 5, so that the two trays 14 can be spliced, and the conveying path length of the roller 2 can be extended, thereby enhancing the guiding and conveying effect of the sheet 16, enhancing the effect of suppressing the jumping of the sheet 16, and further reducing the possibility of scratching the sheet 16 during the conveying process.

[0036] In addition, a spray assembly 10 is also provided on one side of the bracket 1, and the spray assembly 10 includes a liquid storage tank 101, a pump body 102 and a nozzle 103. The liquid storage tank 101 stores cooling liquid, and the pump body 102 is fixedly connected to one side of the liquid storage tank 101. The input end of the pump body 102 is connected to the inside of the liquid storage tank 101, and the output end of the pump body 102 is connected to the nozzle 103; the nozzle 103 is located above the tray 14, and the opening of the nozzle 103 faces the tray 14. Therefore, the nozzle 103 can spray cooling liquid to the sheet 16 on the roller 2, and the subsequent sheet 16 can be cooled after entering the punching machine to prevent the sheet 16 from being damaged due to excessive temperature during the punching process.

[0037] Reference Figure 4 Furthermore, the tray 14 is hollowed out, so the sprayed coolant is not easy to accumulate on the tray 14. Another nozzle 103 can be arranged below the tray 14, so that the opening of the nozzle 103 faces upward, so as to spray the coolant on the lower surface of the sheet 16. The hollow tray 14 is not easy to affect the spraying of the coolant, and the coolant is not easy to accumulate on the tray 14.

[0038] The implementation principle of Example 1 is as follows: the conveying device conveys the long continuous sheet 16 to the roller 2, and under the conveying action of the conveying device, the sheet 16 moves between the roller 2 and the guide plate 3. During the movement of the sheet 16, the roller 2 rotates, thereby reducing the friction between the roller 2 and the sheet 16. During the movement of the sheet 16, the roller 2 supports the sheet 16, and the guide plate 3 is arranged above the sheet 16 at intervals, so that when the sheet 16 jumps vertically, the top surface of the sheet 16 will abut against the bottom wall of the guide plate 3, thereby limiting the vertical jump of the sheet 16 through the guide plate 3, reducing the jump of the sheet 16, and avoiding the excessive jump of the sheet 16 to cause scratches between the sheet 16 and the feed port of the punching machine. During the conveying process of the sheet 16, the nozzle 103 sprays the coolant onto the sheet 16, which can play a cooling role in the subsequent stamping process.

[0039] Example 2 Reference Figure 5 , Figure 6 and Figure 7, the difference between this embodiment and embodiment 1 is that the guide plate 3 in this embodiment includes a fixed plate 32 and a movable plate. The fixed plate 32 is detachably connected to the support plate 141, and a receiving groove is provided on the bottom wall of the fixed plate 32. The shape of the movable plate is adapted to the receiving groove, and the top of the movable plate is vertically slidably connected to the receiving groove. The bottom end of the movable plate is located outside the receiving groove, and the bottom wall of the movable plate and the sheet 16 on the top surface of the roller 2 are spaced apart, and the bottom wall of the movable plate is used to limit the vertical jump of the sheet 16. An air pump 7 is provided on one side of the bracket 1, and an exhaust pipe 15 is connected to the output end of the air pump 7, and one end of the exhaust pipe 15 away from the air pump 7 is fixedly connected to the fixed plate 32. An air inlet 321 communicating with the inside of the receiving groove is provided on the fixed plate 32, and the end of the exhaust pipe 15 is communicated with the air inlet 321, so that the air pump 7 can pass gas into the receiving groove through the exhaust pipe 15 and the air inlet 321. The movable plate is provided with a vertical exhaust hole 6, which penetrates the movable plate, so that the gas in the receiving groove can be discharged downward through the exhaust hole 6, thereby blowing air to the sheet 16 on the roller 2, so that the sheet 16 has a tendency to move downward, thereby reducing the vertical jump of the sheet 16, and further reducing the possibility of scratches caused by the jump of the sheet 16. In addition, during the exhaust process, since the gas stored in the receiving groove cannot be completely discharged from the receiving groove at one time, the gas stored in the receiving groove can play a buffering role in the upward sliding process of the movable plate.

[0040] Reference Figure 6 and Figure 7 , a partition 8 is fixedly connected in the receiving groove, and a plurality of partitions 8 are provided and evenly spaced along the length direction of the receiving groove, and the partitions 8 divide the interior of the receiving groove into a plurality of receiving cavities 9. The movable plate includes a plurality of movable blocks 33, and the number of movable blocks 33 is the same as the number of receiving cavities 9. Each movable block 33 corresponds to a receiving cavity 9, and the top end of the movable block 33 is vertically slidably connected to the corresponding receiving cavity 9, and the bottom end of the movable block 33 is located outside the receiving cavity 9. Figure 8 A slider 334 is fixedly connected to the movable block 33 , a vertical slide groove 91 is opened on the inner wall of the accommodating cavity 9 , and the slider 334 is slidably connected to the slide groove 91 .

[0041] Reference Figure 6 and Figure 7 , each movable block 33 is provided with an exhaust hole 6 that penetrates through it. A flow channel 322 is also provided inside the fixed plate 32, and the top of each exhaust hole 6 is connected to the air inlet 321 through the flow channel 322, so that the air pump 7 can easily pass gas into the accommodating chamber 9, so that the gas stored in the accommodating chamber 9 can have a buffering effect on the upward sliding process of the movable block 33. Since there are multiple movable blocks 33, when one of the movable blocks 33 is lifted up by the sheet 16, the remaining movable blocks 33 can remain in their original state, thereby ensuring the limiting effect of the remaining movable blocks 33 on the jumping of the sheet 16.

[0042] Furthermore, connecting rods 331 are fixedly connected to both side walls at the bottom end of one of the movable blocks 33. The connecting rods 331 are located outside the accommodation cavity 9. The connecting rods 331 are horizontally arranged, and the two connecting rods 331 are in the same straight line direction. Limiting grooves 332 are formed in the side walls at the bottom ends of the two movable blocks 33 adjacent to the movable block 33 provided with the connecting rods 331. The depth direction of the limiting grooves 332 is vertically arranged, and the end portions of the connecting rods 331 are inserted into the limiting grooves 332. Under normal conditions, the bottom ends of each movable block 33 are in a flush state, and the connecting rods 331 are located in the middle of the corresponding limiting grooves 332. When one of the movable blocks 33 is lifted upward by the sheet material 16, this movable block 33 drives the connecting rod 331 to move upward. After the movable block 33 moves upward a certain distance, the connecting rod 331 abuts against the top end of the limiting groove 332. At this time, with the cooperation of the connecting rod 331 and the limiting groove 332, when the movable block 33 provided with the connecting rod 331 moves upward, it will drive the two adjacent movable blocks 33 to move upward, thereby preventing the movable block 33 from being lifted too much, resulting in a too large notch at the bottom of this movable block 33 and scratching the sheet material 16 at the edge of the notch.

[0043] In addition, rounded corners 333 are provided on both sides of the bottom end of the movable block 33, so that the possibility of the bottom end of the movable block 33 scratching the sheet material 16 can be further reduced.

[0044] In this embodiment, there is one guide plate 3 composed of the fixed plate 32 and the movable plate, and it is located in the middle of the roller 2; in other embodiments, the number of guide plates 3 can also be more. For example, three guide plates 3 are provided, one of which is located in the middle of the roller 2, and the other two are respectively located at both ends of the roller 2, so as to enhance the suppression effect on the jumping of the sheet material 16. Since the width of the guide plate 3 is small, the guide plate 3 is not likely to block the sheet material 16 and is not likely to affect the spraying effect of the nozzle 103 on the sheet material 16.

[0045] In this embodiment, the nozzle 103 is arranged on one side of the tray 14 close to the feeding port of the stamping machine. Therefore, the guiding and conveying of the sheet material 16 is first completed, the jumping of the sheet material 16 is suppressed, and then the coolant is sprayed on the sheet material 16. Blowing and spraying play a secondary cooling effect, which can ensure the subsequent stamping and forming effect. In other embodiments, according to needs, the nozzle 103 can also be arranged on one side of the tray 14 close to the conveying device. First, the coolant is sprayed, and then the sheet material 16 is blown to suppress the jumping of the sheet material 16. The blown air can make the coolant cover the sheet material 16 more evenly. The coolant can also play a lubricating effect and weaken the friction between the sheet material 16 and the movable block 33.

[0046] The sheet material 16 moves horizontally intermittently under the action of the conveying device. During the movement of the sheet material 16, air is always blown through the exhaust holes 6 to the sheet material 16, which can ensure the stability of the conveying process.

[0047] The implementation principle of Example 2 is as follows: the gas discharged from the air pump 7 flows into the accommodating chamber 9 through the exhaust pipe 15, the air inlet 321 and the flow channel 322, and the gas in the accommodating chamber 9 is then discharged through the bottom end of the exhaust hole 6 on the movable block 33, thereby blowing air to the sheet 16 on the roller 2, which can apply a downward force to the sheet 16, so that the sheet 16 has a tendency to move downward, thereby reducing the vertical jump of the sheet 16, and reducing the possibility of scratches caused by the jump of the sheet 16. When the jump amount of the sheet 16 is large, the sheet 16 will push the corresponding movable block 33 upward. Since the gas in the accommodating chamber 9 at the top of the movable block 33 cannot be quickly discharged, the gas stored in the accommodating chamber 9 can play a buffering role in the upward sliding process of the movable block 33. This buffering process can consume a part of the kinetic energy of the sheet 16, thereby reducing the energy of the sheet 16, which helps to further reduce the jump amount of the sheet 16.

[0048] When a part of the sheet 16 pushes the movable block 33 upward, the movable block 33 first moves upward for a distance, so that the connecting rod 331 slides to a state of abutting against the top of the limiting groove 332, and then the movable block 33 moves upward to drive the two adjacent movable blocks 33 to move upward, thereby preventing a movable block 33 from being pushed up too much, causing the edge of the notch at the bottom of the movable block 33 to scratch the sheet 16.

[0049] Then the corresponding part of the sheet 16 jumps downward. At this time, the gas in the accommodating chamber 9 is discharged downward through the exhaust hole 6, which can generate a downward thrust on the movable block 33, so that the movable block 33 moves downward and returns to the initial state.

[0050] The above are optional embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An anti-scratching device before stamping and feeding of a continuous sheet, characterized in that: Comprising: A bracket (1); Rollers (2), rotatably connected to the bracket (1), with a plurality of the rollers (2) arranged at intervals and in parallel; A guide plate (3), arranged on the bracket (1), the guide plate (3) being arranged at intervals above the rollers (2) so that a sheet (16) passes between the rollers (2) and the guide plate (3) and the rollers (2) support the sheet (16); A fastener, arranged between the guide plate (3) and the bracket (1) for adjusting the distance between the guide plate (3) and the rollers (2).

2. The anti-scratch device before stamping and feeding of a continuous sheet tape according to claim 1, characterized in that: The bracket (1) includes a base (11), a support rod (12), a chuck (13) and a tray (14). The support rod (12) is arranged on the base (11), the chuck (13) is slidably penetrated through the support rod (12), a locking bolt (132) is arranged on the chuck (13), and the locking bolt (132) is used to drive the chuck (13) to tightly press and fix on the support rod (12). The tray (14) is fixedly connected to the chuck (13), and both the rollers (2) and the guide plate (3) are arranged on the tray (14).

3. The anti-scratch device before stamping and feeding of a continuous sheet strip according to claim 2, characterized in that: A connecting block (5) is arranged on the tray (14), and the connecting block (5) is used for fixedly connecting with another tray (14) equipped with rollers (2) and a guide plate (3).

4. The anti-scratch device before stamping and feeding of a continuous sheet strip according to claim 2, characterized in that: The tray (14) is provided with a hollow structure.

5. The anti-scratching device before stamping and feeding of a continuous sheet according to claim 1, characterized in that: Exhaust holes (6) are arranged on the guide plate (3), an air pump (7) is arranged on one side of the bracket (1), one end of the exhaust hole (6) is communicated with the air pump (7), and the other end of the exhaust hole (6) faces the rollers (2).

6. The anti-scratching device before stamping and feeding of a continuous sheet strip according to claim 5, characterized in that: The guide plate (3) includes a fixed plate (32) and a movable plate. The fixed plate (32) is fixedly connected to the bracket (1), a receiving groove is formed on the fixed plate (32), the top end of the movable plate is slidably connected in the receiving groove, the air outlet end of the air pump (7) is communicated with the inside of the receiving groove, and the exhaust hole (6) is arranged through the movable plate so that the gas discharged by the air pump (7) flows into the receiving groove and then is discharged through the exhaust hole (6).

7. An anti-scratch device before stamping and feeding of a continuous sheet strip according to claim 6, characterized in that: A partition (8) is arranged in the receiving groove, with a plurality of the partitions (8) arranged at intervals along the length direction of the receiving groove. The partition (8) divides the receiving groove into a plurality of receiving cavities (9). The movable plate includes a plurality of movable blocks (33), the number of the movable blocks (33) is the same as the number of the receiving cavities (9), and each movable block (33) is slidably connected in the corresponding receiving cavity (9). The exhaust hole (6) is arranged through the movable block (33).

8. A scratch-preventing device before stamping and feeding of a continuous sheet tape according to claim 7, characterized in that: A connecting rod (331) is arranged on one of the movable blocks (33), and a limiting groove (332) is formed on the movable block (33) adjacent to the movable block (33) provided with the connecting rod (331). The limiting groove (332) is arranged along the sliding direction of the movable block (33), and the connecting rod (331) is used to abut against the end of the limiting groove (332) so that one movable block (33) slides a certain distance and then drives the adjacent movable block (33) to slide.

9. The anti-scratch device before stamping and feeding of a continuous sheet strip according to claim 7, characterized in that: A rounded corner (333) is arranged at the end of the movable block (33) away from the fixed plate (32).

10. The anti-scratch device before stamping and feeding of a continuous sheet strip according to claim 1, characterized in that: A spray assembly (10) for spraying a coolant onto a sheet (16) on a roller (2) is provided on one side of the bracket (1).

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