Automatic splitting machine for leather coiled materials

Abstract

The utility model discloses an automatic splitting machine for leather coiled materials, relates to the related field of coiled material splitting, and aims to solve the problems that in the prior art, each splitting tool is independently adjusted, the position of one splitting tool needs to be adjusted and fixed, then the position of the other splitting tool needs to be adjusted, and splitting adjustment consumes a long time. The first slitting assembly and the second slitting assembly each comprise a sliding block, bearing vertical plates are fixed to the two sides of the lower end of each sliding block, a middle rotating pipe is rotationally connected between the two bearing vertical plates in each set, and a slitting blade is installed in the middle of the outer portion of each middle rotating pipe. The front end and the rear end of a sliding block on the first slitting assembly are rotationally connected with four first linkage rods through shafts, the front end and the rear end of a sliding block on the second slitting assembly are rotationally connected with four second linkage rods through shafts, and the second linkage rods are rotationally connected with the corresponding first linkage rods through shafts. And the first linkage rod and the second linkage rod form a rhombic linkage structure.

Description

Technical Field

[0001] This utility model relates to the field of roll material slitting, specifically an automatic slitting machine for leather roll materials. Background Technology

[0002] Leather rolls, as an important raw material for leather product manufacturing, are widely used in footwear, bags, furniture, automotive interiors, and other fields. During leather processing, large rolls of leather typically need to be cut into sheets of specific widths or lengths to meet the size requirements of different products.

[0003] Currently common slitting methods include: manual slitting, where operators use blades to cut along a ruler, which is extremely inefficient and relies heavily on experience, with slitting accuracy errors often exceeding ±2mm, making it difficult to meet the precision requirements of high-end products; and semi-automatic circular blade slitting machines, which use motor-driven circular blades for cutting. For example, Chinese authorized patent CN 117601181 A (A Roll Material Slitting Machine) includes a roll material mounting mechanism and a slitting mechanism. The roll material mounting mechanism includes a fixed plate and a sliding member, which are arranged opposite each other with an adjustable spacing. Clamping parts are rotatably mounted on opposite sides of both the fixed plate and the sliding member, and one of these clamping parts is driven by a drive component. By adjusting the spacing between the fixed plate and the sliding member, the two clamping parts clamp the roll material between them. This invention, through the design of the roll material mounting mechanism, facilitates the clamping and fixing of roll materials of different widths. Furthermore, through the design of the slitting mechanism, utilizing multiple slitting blades on a crossbar and the adjustable spacing between adjacent slitting blades, it facilitates the adjustment of the slitting width, enabling multi-width, multi-pass slitting.

[0004] Although the existing technology has the function of adjusting the cutting width, each cutting tool is adjusted separately. It is necessary to adjust and fix the position of one cutting tool before adjusting the position of another cutting tool, which takes a long time to adjust the cutting width. Utility Model Content

[0005] The purpose of this invention is to provide an automatic slitting machine for leather rolls, so as to solve the problem mentioned in the background art that each slitting cutter needs to be adjusted individually, requiring the adjustment of one slitting cutter position before adjusting the position of another slitting cutter, which results in a long slitting adjustment time.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an automatic leather roll slitting machine, comprising a lower base plate, with third fixed plates welded and fixed to both sides of the upper middle of the lower base plate, an upper fixed rod installed at the uppermost end between two of the third fixed plates, a drive roller rotatably connected between the two third fixed plates along the lower end of the upper fixed rod, a limit strip fixed to the outside of the drive roller, and a slitting unit disposed between the two third fixed plates, the slitting unit comprising a first slitting component and a second slitting component, two first slitting components respectively located on the left and right sides of a plurality of second slitting components, each of the first and second slitting components including a sliding block, the sliding block sliding along the upper fixed rod, and bearings fixed to both sides of the lower end of the sliding block. The upright plate has an intermediate rotating tube rotatably connected between each group of two bearing upright plates. The inner surface of the intermediate rotating tube has an inner limiting groove, which allows the intermediate rotating tube to slide along the drive roller and the limiting strip. A slitting blade is installed in the middle of the outer side of the intermediate rotating tube. The front and rear ends of the sliding block on the first slitting assembly are rotatably connected to four first linkage rods via shafts. The front and rear ends of the sliding block on the second slitting assembly are rotatably connected to four second linkage rods via shafts. Two second linkage rods are arranged crosswise at each end. The second linkage rods are rotatably connected to the corresponding first linkage rods via shafts, and the first linkage rods and second linkage rods form a diamond linkage structure. The sliding block on the first slitting assembly is threadedly connected to a fixing screw, and the inner end face of the fixing screw presses against the upper fixing rod.

[0007] Preferably, a first conveying roller is installed at the lower end of the front end between the two third fixed uprights, a second conveying roller is installed at the upper end of the rear end of the first conveying roller between the two third fixed uprights, a lower support roller is installed at the lower end of the slitting unit between the two third fixed uprights, and a third conveying roller and a fourth conveying roller are respectively installed at the upper and lower ends of the rear end of the slitting unit and the lower support roller between the two third fixed uprights, with space left between the third conveying roller and the fourth conveying roller for the leather to pass through.

[0008] Preferably, a second drive motor is installed on the outer side of one of the third fixed upright plates, a third bevel gear is installed on the output shaft end of the second drive motor, a fourth bevel gear is meshed with one side of the third bevel gear, and one end of the drive roller passes through one of the third fixed upright plates and is connected to the fourth bevel gear.

[0009] Preferably, a second fixed upright plate is welded and fixed on both sides of the upper rear end of the lower substrate, and a first winding roller and a second winding roller are respectively provided at the upper and lower ends between the two second fixed upright plates. The first winding roller and the second winding roller have the same structure.

[0010] Preferably, a first gear is fixed to one end of the shaft of the first and second take-up rollers, and a second gear is installed on the outer side of one of the second fixed plates. The second gear meshes with the first gear, and a transmission wheel is coaxially connected to the outer side of the second gear. The transmission wheels on the first and second take-up rollers are connected by a transmission belt.

[0011] Preferably, a first drive motor is installed on the outer side of one of the third fixed upright plates, a first bevel gear is installed on the output shaft end of the first drive motor, a second bevel gear is meshed with one end of the first bevel gear, and the second bevel gear is coaxially connected to the transmission wheel on the outer side of the second take-up roller.

[0012] Preferably, a first fixed plate is welded and fixed on both sides of the upper front end of the lower substrate, and an original roller body is disposed between the two first fixed plates.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] (1) In this utility model, through the design of the diamond linkage structure, when adjusting the slitting width, only the fixing screw needs to be loosened to allow the first slitting component to slide freely. At the same time, the second slitting component will be adjusted synchronously and equidistantly, which greatly improves the accuracy and efficiency of the slitting width adjustment, can meet the slitting requirements of leather products of different specifications, and makes the dimensional accuracy of the slitting leather high. It solves the problem in the prior art that each slitting cutter needs to be adjusted and fixed in one position before adjusting the position of another slitting cutter, which results in a long slitting adjustment time.

[0015] (2) In this utility model, the “S” shaped conveying path and the cooperation of multiple sets of conveying rollers and supporting rollers ensure the stability and flatness of the leather during the conveying process, effectively avoid the problems of wrinkles and deviations in the leather during the slitting process, thereby ensuring the accuracy and quality of slitting, making the edges of the slitting leather neat and smooth, and improving the appearance quality of the product.

[0016] (3) In this utility model, the original roller body and the take-up roller adopt a detachable design. The original roller body can be easily removed and a new leather roll can be placed by simply unscrewing the fixing screw. At the same time, the intermediate core is placed outside the take-up roller, making the operation simple and quick. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of an automatic leather roll slitting machine according to the present invention from a frontal perspective;

[0018] Figure 2 This is a schematic diagram of the overall structure of an automatic leather roll slitting machine according to the present invention from an upward perspective;

[0019] Figure 3This is an enlarged view of section A of the automatic leather roll slitting machine of this utility model;

[0020] Figure 4 This is a top view of an automatic leather roll slitting machine according to the present invention;

[0021] Figure 5 This is a schematic diagram of the slitting unit of an automatic leather roll slitting machine according to the present invention.

[0022] In the diagram: 1. Lower base plate; 2. First fixed vertical plate; 3. Original roller body; 4. Second fixed vertical plate; 5. First take-up roller; 6. Second take-up roller; 7. First gear; 8. Second gear; 9. Transmission wheel; 10. Transmission belt; 11. First drive motor; 12. First bevel gear; 13. Second bevel gear; 14. Third fixed vertical plate; 15. First conveyor roller; 16. Second conveyor roller; 17. Lower support roller; 18. Drive roller; 19. Limiting strip; 20. 21. Upper fixed rod; 22. Sliding unit; 23. Third conveying roller; 24. Fourth conveying roller; 25. Second drive motor; 26. Third bevel gear; 27. Fourth bevel gear; 28. First sliding assembly; 29. ​​Second sliding assembly; 30. Sliding block; 31. Bearing upright plate; 32. Intermediate rotating tube; 33. Inner limiting groove; 34. Sliding blade; 35. Fixed screw; 36. First linkage rod; 37. Second linkage rod; 38. Rhomboid linkage structure. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Please see Figures 1-5 This utility model provides an embodiment comprising a lower base plate 1, which serves as the supporting foundation for the entire device. First fixed upright plates 2 are welded and fixed to both sides of the upper front end of the lower base plate 1, and a primary roller body 3 is disposed between the two first fixed upright plates 2. In use, simply unscrewing the screw securing the outer rotating ring of the primary roller body 3 allows the primary roller body 3 to be removed along the slot, thus facilitating the placement of the leather roll to be cut onto the primary roller body 3. The operation is simple and convenient, greatly shortening the time for changing rolls and improving production efficiency.

[0025] A second fixed plate 4 is welded and fixed to both sides of the upper rear end of the lower base plate 1. A first take-up roller 5 and a second take-up roller 6 are respectively arranged at the upper and lower ends between the two second fixed plates 4. The first take-up roller 5 and the second take-up roller 6 have the same structure. A first gear 7 is fixed to one end of the shaft of the first take-up roller 5 and the second take-up roller 6. A second gear 8 is installed on the outside of one of the second fixed plates 4. The second gear 8 meshes with the first gear 7. A transmission wheel 9 is coaxially connected to the outside of the second gear 8. The transmission wheel 9 on the first take-up roller 5 and the second take-up roller 6 are connected by a transmission belt 10. A first drive motor 11 is installed on the outside of one of the third fixed plates 14. A first bevel gear 12 is installed on the output shaft end of the first drive motor 11. A second bevel gear 13 is meshed with one end of the first bevel gear 12. The second bevel gear 13 is coaxially connected to the transmission wheel 9 on the outside of the second take-up roller 6. When the first drive motor 11 starts, the second take-up roller 6 is driven to rotate through the meshing transmission of the first bevel gear 12 and the second bevel gear 13. At the same time, through the cooperation of the second gear 8, the first gear 7, the transmission wheel 9 and the transmission belt 10, the first take-up roller 5 rotates synchronously, realizing the stable winding of the slit leather and ensuring the continuity and stability of the slit process.

[0026] The first fixed plate 2 and the second fixed plate 4 are provided with slots for the roller shaft to enter; the roller shaft has a rotating ring on the outside and a threaded groove inside the rotating ring; the first fixed plate 2 and the second fixed plate 4 are threadedly connected to a fixing screw; rotating the fixing screw can fix the rotating ring in the slot, but does not affect the rotation of the shaft connected to the rotating ring bearing.

[0027] A third fixing plate 14 is welded and fixed to both sides of the upper middle of the lower base plate 1. An upper fixing rod 20 is installed at the uppermost end between the two third fixing plates 14. A drive roller 18 is rotatably connected between the two third fixing plates 14 along the lower end of the upper fixing rod 20. A limit strip 19 is fixed to the outside of the drive roller 18. A slitting unit 21 is provided between the two third fixing plates 14. The slitting unit 21 includes a first slitting component 27 and a second slitting component 28. The two first slitting components 27 are respectively located on the left and right sides of the plurality of second slitting components 28. Both the first slitting assembly 27 and the second slitting assembly 28 include a sliding block 29, which can slide along the upper fixed rod 20. Bearing plates 30 are fixed to both sides of the lower end of the sliding block 29. A central rotating tube 31 is rotatably connected between each set of two bearing plates 30. An inner limiting groove 32 is formed on the inner surface of the central rotating tube 31. The central rotating tube 31 slides along the drive roller 18 and the limiting strip 19 through the inner limiting groove 32. A slitting blade 33 is installed in the middle of the outer side of the central rotating tube 31. This design allows the slitting blade 33 to rotate stably with the rotation of the drive roller 18, thereby achieving precise slitting of the leather; and it does not affect the sliding adjustment of the slitting blade 33 along the drive roller 18.

[0028] The sliding block 29 on the first sliding assembly 27 is rotatably connected to four first linkage rods 35 via shafts at its front and rear ends. The sliding block 29 on the second sliding assembly 28 is rotatably connected to four second linkage rods 36 via shafts at its front and rear ends. Two second linkage rods 36 are arranged crosswise at each end. The second linkage rods 36 are rotatably connected to their corresponding first linkage rods 35 via shafts, forming a rhomboid linkage structure 37. The sliding block 29 on the first sliding assembly 27 is threadedly connected to a fixing screw 34, the inner end face of which presses against the upper fixing rod 20. When it is necessary to adjust the sliding width, simply loosen the fixing screw 34 to release the fixing relationship between the first sliding assembly 27 and the upper fixing rod 20. At this time, the first sliding assembly 27 can slide freely outside the upper fixing rod 20. Because the first slitting component 27 and the second slitting component 28 are connected by a diamond-shaped linkage structure 37, when one or both of the first slitting components 27 move relative to each other, the distance between the first slitting component 27 and the second slitting component 28, as well as the distance between two adjacent second slitting components 28, will be adjusted synchronously. This will adjust the distance between adjacent slitting blades 33, and the adjustment distance will be consistent. This diamond-shaped linkage structure design greatly improves the accuracy and efficiency of slitting width adjustment, and can meet the slitting needs of leather products of different specifications.

[0029] A first conveying roller 15 is installed at the lower end of the front end between the two third fixed upright plates 14. A second conveying roller 16 is installed between the two third fixed upright plates 14 along the upper end of the rear end of the first conveying roller 15. A lower support roller 17 is installed between the two third fixed upright plates 14 along the lower end of the slitting unit 21 for slitting support. A third conveying roller 22 and a fourth conveying roller 23 are respectively installed between the two third fixed upright plates 14 along the upper and lower ends of the rear ends of the slitting unit 21 and the lower support roller 17. A space is left between the third conveying roller 22 and the fourth conveying roller 23 for the leather to pass through. A second drive motor 24 is installed on the outer side of one of the third fixed upright plates 14. A third bevel gear 25 is installed on the output shaft end of the second drive motor 24. A fourth bevel gear 26 is meshed with one side of the third bevel gear 25. One end of the drive roller 18 passes through one of the third fixed upright plates 14 and is connected to the fourth bevel gear 26. In operation, the leather roll placed on the original roller 3 is drawn in from the lower end of the first conveyor roller 15 and enters from the upper end of the second conveyor roller 16 in an "S" shape. After passing between the lower support roller 17 and the slitting unit 21, it is output between the third conveyor roller 22 and the fourth conveyor roller 23 and wound up to the outside of the middle core of the first take-up roller 5 and the second take-up roller 6. When the second drive motor 24 starts, it drives the third bevel gear 25 to rotate. Through the meshing relationship between the third bevel gear 25 and the fourth bevel gear 26, the drive roller 18 connected to the fourth bevel gear 26 rotates. Since the drive roller 18 and the intermediate rotating tube 31 are limited by the limiting strip 19 and the inner limiting groove 32, the intermediate rotating tube 31 and the slitting blade 33 rotate, thereby slitting the leather. This "S" shaped conveying path and the cooperation of multiple sets of conveyor rollers and support rollers ensure the stability and flatness of the leather during the conveying process, effectively avoiding problems such as wrinkles and displacement of the leather during the slitting process, and ensuring the accuracy and quality of the slitting.

[0030] Working principle: Unscrew the screw that fixes the outer rotating ring of the original roller body 3 so that the original roller body 3 can be removed along the slot and the leather roll to be cut can be placed; similarly, place the intermediate core outside the first winding roller 5 and the second winding roller 6 respectively.

[0031] The traction leather roll enters from the lower end of the first conveyor roller 15 and enters from the upper end of the second conveyor roller 16 in an "S" shape. After passing between the lower support roller 17 and the slitting unit 21, it is output between the third conveyor roller 22 and the fourth conveyor roller 23 and wound up to the outside of the core. The second drive motor 24 drives the third bevel gear 25 to rotate. The meshing relationship between the third bevel gear 25 and the fourth bevel gear 26 drives the drive roller 18 connected to the fourth bevel gear 26 to rotate. Because the drive roller 18 and the intermediate rotating tube 31 are limited by the limiting strip 19 and the inner limiting groove 32, the intermediate rotating tube 31 and the slitting blade 33 rotate to slit the leather.

[0032] When adjusting the slitting width, loosen the fixing screw 34 to release the fixing relationship between the first slitting component 27 and the upper fixing rod 20. The first slitting component 27 can slide freely outside the upper fixing rod 20. Since the first slitting component 27 and the second slitting component 28 are connected by the diamond linkage structure 37, when one or both of the first slitting components 27 move relative to each other, the distance between the first slitting component 27 and the second slitting component 28 and the distance between two adjacent second slitting components 28 are adjusted synchronously. The distance between adjacent slitting blades 33 is also adjusted, and the adjustment distance is consistent.

[0033] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An automatic leather roll slitting machine, comprising a lower substrate (1), characterized in that: The lower substrate (1) has two third fixed plates (14) welded and fixed on both sides of the upper middle part of the upper end. An upper fixed rod (20) is installed at the uppermost end between the two third fixed plates (14). A drive roller (18) is rotatably connected between the two third fixed plates (14) along the lower end of the upper fixed rod (20). A limit strip (19) is fixed to the outside of the drive roller (18). A slitting unit (21) is provided between the two third fixed plates (14). The slitting unit (21) includes... The assembly includes a first slitting component (27) and a second slitting component (28). The two first slitting components (27) are located on the left and right sides of the plurality of second slitting components (28), respectively. Both the first slitting component (27) and the second slitting component (28) include a sliding block (29). The sliding block (29) slides along the upper fixed rod (20). Bearing plates (30) are fixed on both sides of the lower end of the sliding block (29). Each set of two bearing plates (30) is rotatably connected by an intermediate rotating joint. The moving tube (31) has an inner limiting groove (32) on its inner surface. The moving tube (31) slides along the driving roller (18) and the limiting strip (19) through the inner limiting groove (32). A sliding blade (33) is installed in the middle of the outside of the moving tube (31). The sliding block (29) on the first sliding assembly (27) is rotatably connected to four first linkage rods (35) at its front and rear ends by a shaft. The sliding block (29) on the second sliding assembly (28) is also connected to the sliding block (29). The front and rear ends are connected by a shaft to four second linkage rods (36). Two second linkage rods (36) are arranged crosswise at each end. The second linkage rods (36) are connected to the corresponding first linkage rods (35) by a shaft. The first linkage rods (35) and the second linkage rods (36) form a rhomboid linkage structure (37). The sliding block (29) on the first cutting component (27) is threadedly connected to a fixing screw (34). The inner end face of the fixing screw (34) presses against the upper fixing rod (20).

2. The automatic leather roll slitting machine according to claim 1, characterized in that: A first conveying roller (15) is installed at the lower end of the front end between the two third fixed upright plates (14). A second conveying roller (16) is installed between the two third fixed upright plates (14) along the upper end of the rear end of the first conveying roller (15). A lower support roller (17) is installed between the two third fixed upright plates (14) along the lower end of the slitting unit (21). A third conveying roller (22) and a fourth conveying roller (23) are installed between the two third fixed upright plates (14) along the upper and lower ends of the rear ends of the slitting unit (21) and the lower support roller (17), respectively. A space is left between the third conveying roller (22) and the fourth conveying roller (23) for the leather to pass through.

3. The automatic leather roll slitting machine according to claim 1, characterized in that: A second drive motor (24) is installed on the outer side of one of the third fixed upright plates (14). A third bevel gear (25) is installed on the output shaft end of the second drive motor (24). A fourth bevel gear (26) is meshed on one side of the third bevel gear (25). One end of the drive roller (18) passes through one of the third fixed upright plates (14) and is connected to the fourth bevel gear (26).

4. The automatic leather roll slitting machine according to claim 1, characterized in that: The lower substrate (1) has a second fixed plate (4) welded and fixed on both sides of the upper rear end. The upper and lower ends of the two second fixed plates (4) are respectively provided with a first winding roller (5) and a second winding roller (6). The first winding roller (5) and the second winding roller (6) have the same structure.

5. The automatic leather roll slitting machine according to claim 4, characterized in that: A first gear (7) is fixed to one end of the shaft of the first take-up roller (5) and the second take-up roller (6). A second gear (8) is installed on the outer side of one of the second fixed plates (4). The second gear (8) meshes with the first gear (7). A transmission wheel (9) is coaxially connected to the outer side of the second gear (8). The transmission wheel (9) on the first take-up roller (5) and the second take-up roller (6) is connected by a transmission belt (10).

6. The automatic leather roll slitting machine according to claim 5, characterized in that: A first drive motor (11) is installed on the outer side of one of the third fixed upright plates (14). A first bevel gear (12) is installed on the output shaft end of the first drive motor (11). A second bevel gear (13) is meshed with one end of the first bevel gear (12). The second bevel gear (13) is coaxially connected to the transmission wheel (9) on the outer side of the second take-up roller (6).

7. The automatic leather roll slitting machine according to claim 1, characterized in that: The lower substrate (1) has a first fixed plate (2) welded and fixed on both sides of the upper front end, and the original roller body (3) is arranged between the two first fixed plates (2).

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