Surface stretching device for leather production

Abstract

The utility model discloses a surface stretching device for leather production, which comprises a base, four corners of the bottom of the base are fixedly provided with supporting legs, the top of the base is fixedly connected with a mounting rack, one side of the mounting rack is provided with a flattening assembly, one side of the base is provided with a clamping assembly, and the clamping assembly is fixedly connected with the base. In the process that the connecting block moves downwards, the two compacting rollers can be driven to move towards the two sides at the same time, leather is flattened and compacted, fibers on the surface of the leather can be more evenly distributed, the wrinkles and unevenness phenomena are eliminated, the quality of the leather is improved, and the quality of the leather is improved. The two sides of the leather can be fixed through the two clamping plates, meanwhile, the two clamping plates can be far away from each other through the fixing plate which continuously moves upwards and the connecting plate, the stretched leather is pulled to be flat, and the situation that the leather is close to the two sides of the clamping plates and accumulated, and wrinkles of the leather are caused is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of leather production, in particular to a surface stretching device for leather production. Background Technique

[0002] The surface stretching device for leather production is a device specifically designed for the surface treatment of leather materials. It stretches the leather through mechanical force to improve the performance of the leather. It is widely used in industries such as leather manufacturing, footwear, luggage, and furniture. Leather is the animal skin that has been denatured and is not easily decayed through physical and chemical processes such as hair removal and tanning. Leather is composed of natural protein fibers tightly woven in three-dimensional space. Its surface has a special grain layer with natural grain patterns and luster, and it feels comfortable. In the process of human evolution, people found that the juices or mineral oils of some plants have a certain tanning property for leather. The raw leather becomes more breathable and anti-corrosive through soaking in the juice, so that the board quality has physical and chemical properties such as softness, tear resistance, and bending resistance.

[0003] The patent with the Chinese patent authorization number CN219807971U discloses a leather stretching and flattening device for leather product production, which relates to the technical field of leather product production. It includes a device body, and the device body includes a workbench, an auxiliary table, an electric telescopic rod, a top plate, a flattening component, a mounting seat, and an adjusting component. The two ends of the workbench are fixedly provided with auxiliary tables. An electric telescopic rod is arranged on the upper end of the auxiliary table. The top of the electric telescopic rod is fixedly connected with a top plate. A flattening component is arranged at the bottom end of the top plate. The flattening component includes a chute, a driving motor, a lead screw, a slider, an upper pressing plate, a damper, a buffer spring, a lower pressing plate, a mounting groove, a guide rod, and a mounting block. This leather stretching and flattening device for leather product production can flatten and stretch the leather in multiple directions through the setting of the flattening component, and the operation is simple, thereby further improving the practicability of the leather stretching and flattening device for leather product production and making the device have a wide range of applications.

[0004] Although the equipment in the above-mentioned literature can flatten and stretch the leather, in the actual use process, it is not convenient enough, and the two sides of the stretched leather will be stacked, and wrinkles are likely to appear, affecting the aesthetics. Content of the Utility Model

[0005] The purpose of the utility model is to provide a surface stretching device for leather production to solve the problems raised in the above background technique.

[0006] To achieve the above object, the present utility model provides the following technical solutions: A surface stretching device for leather production, including a base, four corners of the bottom of the base are fixedly installed with support legs, the top of the base is fixedly connected with a mounting frame, a flattening component is arranged on one side of the mounting frame, and a clamping component is arranged on one side of the base.

[0007] As a further preference of this technical solution, the flattening component includes a hydraulic pump I installed at the center of the top of the mounting frame, the output end of the hydraulic pump I is fixedly connected with a connecting block, the bottom of the connecting block is fixedly connected with a pressing plate, two rotating columns are rotatably connected to the front and rear sides of the connecting block respectively, transmission plates are fixedly connected to the outer surfaces of the four rotating columns, and two compaction rollers are rotatably connected together between the two transmission plates at the front end and the two transmission plates at the rear end.

[0008] As a further preference of this technical solution, the clamping component includes a bracket installed at the bottom of the base, a hydraulic pump II is fixedly arranged at the bottom side inside the bracket, the output end of the hydraulic pump II is fixedly connected with a push rod, a spring plate is fixedly installed at the top end of the push rod, a rack is fixedly connected to the front part of the bottom plate of the spring plate, the rack is meshed with a gear, telescopic rods are fixedly connected to the left and right sides of the gear respectively, and bevel gears I are fixedly connected to the left end and the right end of the two telescopic rods respectively, and the bevel gear I is meshed with a bevel gear II.

[0009] As a further preference of this technical solution, a chute II is opened at the bottom of the base, two rotating shafts are movably connected in the chute II, the two rotating shafts respectively penetrate through the two bevel gears II and are rotatably connected with a positioning plate, a chute I is opened at the top of the base, and the positioning plate is slidably connected in the chute I.

[0010] As a further preference of this technical solution, the two positioning plates are respectively rotatably connected with the two telescopic rods, a threaded sleeve is arranged in the inner cavity of the rotating shaft, a screw rod adapted to the threaded sleeve is threadedly connected to the threaded sleeve, a clamping plate is fixedly connected to the top of the screw rod, and a stretching component is arranged on the push rod.

[0011] As a further preference of this technical solution, the stretching component includes a U-shaped plate, the U-shaped plate is fixedly connected with the push rod, two springs are fixedly connected to the bottom end of the spring plate, the bottom ends of the two springs are jointly connected to the same fixing plate, and the fixing plate is located above the U-shaped plate.

[0012] As a further preference of this technical solution, the fixing plate does not contact the push rod, and two connecting plates are rotatably connected together between the rear ends of the two positioning plates and the left and right ends of the front part of the fixing plate.

[0013] The present utility model provides a surface stretching device for leather production, which has the following beneficial effects:

[0014] (1) During the downward movement of the connecting block of the present utility model, it can drive the two compaction rollers to move towards both sides simultaneously to flatten and compact the leather. Then, through continuous downward movement, secondary compaction can be carried out by the pressing plate, making the fibers on the leather surface more evenly distributed, eliminating wrinkles and unevenness, and improving the flatness of the leather.

[0015] (2) The present utility model can fix both sides of the leather through two clamping plates. At the same time, it can move the fixing plate continuously upward, and by using the connecting plate, the two clamping plates can be made to move away from each other to flatten the stretched leather, preventing the accumulation of the leather on both sides close to the clamping plates, resulting in wrinkles on the leather. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0017] Figure 2 is a schematic diagram of the flattening component structure of the present utility model;

[0018] Figure 3 is a schematic diagram of the clamping component structure of the present utility model;

[0019] Figure 4 is of the present utility model Figure 3 amplified structure schematic diagram of part A;

[0020] Figure 5 is a detailed structure schematic diagram of the positioning plate and the sliding groove of the present utility model.

[0021] In the figure: 1, base; 2, support leg; 3, mounting bracket; 4, flattening component; 41, hydraulic pump I; 42, connecting block; 43, pressing plate; 44, rotating column; 45, transmission plate; 46, compaction roller; 5, clamping component; 51, bracket; 52, hydraulic pump II; 53, spring plate; 54, rack; 55, gear; 56, telescopic rod; 57, bevel gear I; 58, bevel gear II; 59, rotating shaft; 60, screw; 61, clamping plate; 62, stretching component; 621, U-shaped plate; 622, fixing plate; 623, spring; 624, connecting plate; 63, positioning plate; 64, sliding groove I; 65, push rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model.

[0023] The present utility model provides technical solutions: As Figures 1 to 5As shown in the figure, in this embodiment, a surface stretching device for leather production includes a base 1. Support legs 2 are fixedly installed at the four corners of the bottom of the base 1. A mounting frame 3 is fixedly connected to the top of the base 1. A flattening component 4 is arranged on one side of the mounting frame 3. The flattening component 4 can stretch and flatten the leather, making the fibers on the leather surface more evenly distributed, eliminating wrinkles and unevenness, and improving the flatness of the leather. A clamping component 5 is arranged on one side of the base 1. The clamping component 5 can fix the leather to prevent the leather from moving during the stretching and flattening process.

[0024] As Figure 2 shown, the flattening component 4 includes a hydraulic pump 41 installed at the center of the top of the mounting frame 3. The output end of the hydraulic pump 41 is fixedly connected to a connecting block 42. The bottom of the connecting block 42 is fixedly connected to a pressing plate 43. Two rotating columns 44 are rotatably connected to the front and rear sides of the connecting block 42 respectively. Transmission plates 45 are fixedly connected to the outer surfaces of the four rotating columns 44. Two compaction rollers 46 are rotatably connected between the two transmission plates 45 at the front end and the two transmission plates 45 at the rear end.

[0025] By starting the hydraulic pump 41, the connecting block 42 can be driven to move downward, and the pressing plate 43, the transmission plates 45 and the compaction rollers 46 can be driven to move downward. When the two compaction rollers 46 contact the leather, and continue to apply force, the two compaction rollers 46 will move away from each other to compact and flatten the leather. After the two compaction rollers 46 complete the compaction and flattening, the overall secondary compaction can be carried out through the pressing plate 43 to further improve the overall flatness of the leather.

[0026] As Figure 3 、 Figure 4 and Figure 5As shown, the clamping assembly 5 includes a bracket 51 installed at the bottom of the base 1. A second hydraulic pump 52 is fixedly arranged on the inner bottom side of the bracket 51. The output end of the second hydraulic pump 52 is fixedly connected to a push rod 65. The top end of the push rod 65 is fixedly installed with a spring plate 53. The front part of the bottom plate of the spring plate 53 is fixedly connected to a rack 54. The rack 54 is meshed with a gear 55. Both the left and right sides of the gear 55 are fixedly connected to telescopic rods 56. The left and right ends of the two telescopic rods 56 are both fixedly connected to bevel gears 57. The bevel gear 57 is meshed with a bevel gear 58. A second chute is opened at the bottom of the base 1. Two rotating shafts 59 are movably connected in the second chute. The two rotating shafts 59 respectively penetrate through the two bevel gears 58 and are rotatably connected to a positioning plate 63. A first chute 64 is opened at the top of the base 1. The positioning plate 63 is slidably connected in the first chute 64. The two positioning plates 63 are respectively rotatably connected to the two telescopic rods 56. A threaded sleeve is arranged in the inner cavity of the rotating shaft 59. A screw rod 60 adapted to the threaded sleeve is threadedly connected to the threaded sleeve. The top of the screw rod 60 is fixedly connected to a clamping plate 61. A stretching assembly 62 is arranged on the push rod 65. The stretching assembly 62 can stretch and flatten the leather to both sides, preventing the leather from piling up at the front end of the clamping plate 61 during the compaction process by the flattening assembly 4, which easily causes wrinkles and affects the appearance.

[0027] By starting the second hydraulic pump 52, the spring plate 53 can be driven to move upward, and then the rack 54 can be driven to move upward simultaneously. Through the linkage of the gear 55, the telescopic rod 56 and other components, the rotating shaft 59 can be driven to rotate. Since a threaded sleeve adapted to the screw rod 60 is arranged inside the rotating shaft 59, the rotation of the rotating shaft 59 can drive the threaded sleeve to rotate, so that the screw rod 60 can move downward, and then the clamping plate 61 can be driven to move downward simultaneously to clamp and fix the leather.

[0028] Above, during the rotation of the rotating shaft 59, the staff can apply force to the clamping plate 61 to keep the clamping plate 61 stable and prevent the rotating shaft 59 from driving the clamping plate 61 to rotate while rotating.

[0029] As Figure 4 and Figure 5 shown, the stretching assembly 62 includes a U-shaped plate 621. The U-shaped plate 621 is fixedly connected to the push rod 65. Two springs 623 are fixedly connected to the bottom end of the spring plate 53. The bottom ends of the two springs 623 are commonly connected to the same fixing plate 622. The fixing plate 622 is located above the U-shaped plate 621 and does not contact the push rod 65. The rear ends of the two positioning plates 63 and the front left and right ends of the fixing plate 622 are commonly rotatably connected to two connecting plates 624.

[0030] By continuously driving the U-shaped plate 621 to move upward through the push rod 65, after the leather is clamped, the hydraulic pump II 52 continues to apply force to compress the spring plate 53. When the U-shaped plate 621 contacts the fixed plate 622, it can push the fixed plate 622 to move upward, compress the spring 623, and through the two connecting plates 624, the two positioning plates 63 can respectively drive the clamping plates 61 to move away from each other to flatten the leather.

[0031] The utility model provides a surface stretching device for leather production, and the specific working principle is as follows:

[0032] During use, first place the leather on the upper surface of the base 1. By starting the hydraulic pump II 52, the spring plate 53 can be driven to move upward, and then the rack 54 can be driven to move upward at the same time. The upward movement of the rack 54 can drive the gear 55 to rotate. The rotation of the gear 55 can drive the telescopic rod 56 to rotate, further drive the two bevel gears I 57 to rotate, and drive the two bevel gears II 58 to rotate, so that the rotating shaft 59 rotates. Since a threaded sleeve adapted to the screw rod 60 is arranged inside the rotating shaft 59, the rotation of the rotating shaft 59 can drive the threaded sleeve to rotate, so that the screw rod 60 can move downward, and at the same time drive the clamping plate 61 to move downward to clamp and fix the leather. After the clamping and fixing are completed, by starting the hydraulic pump I 41, the connecting block 42 can be driven to move downward, and drive the pressing plate 43, the transmission plate 45 and the compaction roller 46 to move downward. When the two compaction rollers 46 contact the leather, continue to apply force, and the two compaction rollers 46 will move away from each other to compact and flatten the leather. After the two compaction rollers 46 complete the compaction and flattening, the overall secondary compaction can be carried out through the pressing plate 43 to further improve the overall flatness of the leather. At this time, there will be leather accumulation at the front ends of the two clamping plates 61. Then continue to start the hydraulic pump II 52. The push rod 65 continuously drives the U-shaped plate 621 to move upward, compresses the spring plate 53. When the U-shaped plate 621 contacts the fixed plate 622, it can push the fixed plate 622 to move upward, compress the spring 623, and through the two connecting plates 624, the two positioning plates 63 can respectively drive the clamping plates 61 to move away from each other to flatten the leather. After the stretching is completed, cancel the clamping, and the leather can be taken off.

[0033] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A surface stretching device for leather production, comprising a base (1), characterized in that: Support legs (2) are fixedly installed at the four corners of the bottom of the base (1). An installation frame (3) is fixedly connected to the top of the base (1). A flattening assembly (4) is arranged on one side of the installation frame (3), and a clamping assembly (5) is arranged on one side of the base (1).

2. The surface stretching device for leather production according to claim 1, wherein: The flattening assembly (4) includes a hydraulic pump I (41) installed at the center of the top of the installation frame (3). The output end of the hydraulic pump I (41) is fixedly connected to a connecting block (42). A pressing plate (43) is fixedly connected to the bottom of the connecting block (42). Two rotating columns (44) are rotatably connected to the front and rear sides of the connecting block (42). Transmission plates (45) are fixedly connected to the outer surfaces of the four rotating columns (44). Two compaction rollers (46) are rotatably connected between the two transmission plates (45) at the front end and the two transmission plates (45) at the rear end.

3. A surface stretching device for leather production according to claim 1, characterized in that: The clamping assembly (5) includes a bracket (51) installed at the bottom of the base (1). A hydraulic pump II (52) is fixedly arranged at the bottom side inside the bracket (51). The output end of the hydraulic pump II (52) is fixedly connected to a push rod (65). A spring plate (53) is fixedly installed at the top of the push rod (65). A rack (54) is fixedly connected to the front part of the bottom plate of the spring plate (53). The rack (54) is meshed with a gear (55). Expansion rods (56) are fixedly connected to the left and right sides of the gear (55). Bevel gears I (57) are fixedly connected to the left ends and right ends of the two expansion rods (56). The bevel gears I (57) are meshed with bevel gears II (58).

4. A surface stretching device for leather production according to claim 3, characterized in that: A chute II is formed in the bottom of the base (1). Two rotating shafts (59) are movably connected in the chute II. The two rotating shafts (59) respectively penetrate through the two bevel gears II (58) and are rotatably connected to a positioning plate (63). A chute I (64) is formed in the top of the base (1). The positioning plate (63) is slidably connected in the chute I (64).

5. The surface stretching device for leather production according to claim 4, characterized in that: The two positioning plates (63) are respectively rotatably connected to the two expansion rods (56). A threaded sleeve is arranged in the inner cavity of the rotating shaft (59). A screw rod (60) adapted to the threaded sleeve is threadedly connected to the threaded sleeve. A clamping plate (61) is fixedly connected to the top of the screw rod (60). A stretching assembly (62) is arranged on the push rod (65).

6. The surface stretching device for leather production according to claim 5, wherein: The stretching assembly (62) includes a U-shaped plate (621). The U-shaped plate (621) is fixedly connected to the push rod (65). Two springs (623) are fixedly connected to the bottom end of the spring plate (53). The bottom ends of the two springs (623) are commonly connected to the same fixing plate (622). The fixing plate (622) is located above the U-shaped plate (621).

7. The surface stretching device for leather production according to claim 6, wherein: The fixing plate (622) does not contact the push rod (65). Two connecting plates (624) are rotatably connected between the rear ends of the two positioning plates (63) and the left and right ends of the front part of the fixing plate (622).

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