CN-116497160-B - Leather stretching device

CN116497160BCN 116497160 BCN116497160 BCN 116497160BCN-116497160-B

Abstract

A leather stretching device comprises a main frame, a thrust device and a plurality of claw units. The main frame is wholly in a G-shaped structure, an operation platform is arranged at the upper end of the lower part of the main frame, a plurality of circumferentially distributed sliding grooves are formed in the operation platform, the sliding grooves are symmetrical in pairs, and the sliding grooves are outwards radially and outwardly extended in the radial length direction by taking a virtual circle as a circle center. The thrust device is arranged right above the operation platform and comprises a thrust cylinder and a thrust rod connected with the thrust cylinder, and the tail end of the thrust rod is provided with a hinged end. The claw unit comprises an elastic telescopic rod and a clamping press block assembly, the elastic telescopic rods are circumferentially movably hinged to the periphery of the hinged end, the clamping press block assembly comprises an upper press block and a lower press block which are mutually clamped and matched, the lower press block and the sliding groove form sliding fit, and a clamping gap for clamping and fixing leather is arranged between the upper press block and the lower press block.

Inventors

WU LIDONG
LI JUNYUAN
LEI YUNBING
WANG WEI
LI JUN

Assignees

浙江新旭合成革有限公司

Dates

Publication Date: 20260512
Application Date: 20230510

Claims (5)

1. A leather stretching device, characterized by comprising The device comprises a main frame (1), wherein the whole main frame (1) is of a G-shaped structure, an operation platform (2) is arranged at the upper end of the lower part of the main frame (1), a plurality of circumferentially distributed sliding grooves (3) are arranged on the operation platform (2), the sliding grooves (3) are symmetrical in pairs, and the sliding grooves (3) are outwards radially and outwardly extended along the radial length direction by taking a virtual circle as a circle center; The thrust device is arranged right above the operation platform (2) and comprises a thrust cylinder (4) and a thrust rod (5) connected with the thrust cylinder (4), and the tail end of the thrust rod (5) is provided with a hinged end (6); The clamping jaw units comprise elastic telescopic rods (7) and clamping press block assemblies, the elastic telescopic rods (7) are movably hinged to the periphery of the hinged end (6) in the circumferential direction, the clamping press block assemblies comprise upper press blocks (8) and lower press blocks (9) which are mutually clamped and matched, an upper press surface is arranged on the lower end face of each upper press block (8), the lower press blocks (9) and the sliding grooves (3) form sliding fit, a lower press surface is arranged at the upper end of each lower press block (9), and a clamping gap for clamping and fixing leather is arranged between each upper press surface and each lower press surface; The elastic telescopic rod (7) comprises an upper loop rod (71) and a lower loop rod (72), wherein the upper end of the upper loop rod (71) is hinged with a hinged end (6), the lower end of the upper loop rod (71) is provided with an outwards protruding core rod (73), the core rod (73) is matched with a shaft hole formed in the upper end of the lower loop rod (72) to form a guide rail, the core rod (73) is sleeved with a thrust spring (74), the upper end and the lower end of the thrust spring (74) are respectively abutted against and connected with the lower end face of the upper loop rod (71) and the upper end face of the lower loop rod (72), the lower end of the core rod (73) is provided with a square limiting slide block (75), and the square limiting slide block (75) is matched with a square cavity formed in the lower loop rod (72) in a sliding limiting mode; The upper pressing surface is provided with first sawtooth anti-skid patterns protruding outwards in an array, and the lower pressing surface is provided with second sawtooth anti-skid patterns which are meshed with the first sawtooth anti-skid patterns and are matched with the first sawtooth anti-skid patterns; When the thrust cylinder (4) drives the thrust rod (5) to push outwards, the claw units clamp leather through the upper pressing block (8) and the lower pressing block (9) and slide outwards along the sliding groove (3), so that corresponding elastic stretching work is carried out on the leather.
2. The leather stretching device according to claim 1, wherein the upper pressing surface of the upper pressing block (8) is provided with a magnetic surface layer, the lower pressing block (9) is made of ferrous metal, and the magnetic surface layer and the lower pressing block (9) form magnetic attraction fit.
3. The leather stretching device as set forth in claim 1, wherein said upper pressing surface is provided with first saw tooth anti-slip patterns outwardly arrayed in convex form, and said lower pressing surface is provided with second saw tooth anti-slip patterns adapted to engage with the first saw tooth anti-slip patterns.
4. The leather stretching device as set forth in claim 1, wherein a plurality of circumferentially distributed mounting grooves (10) are formed in the lower portion of the hinge end (6), the mounting grooves (10) correspond to the jaw units, arc-shaped clamping grooves (11) are formed in the inner sides of the mounting grooves (10), magnetic layers (13) are arranged on the surfaces of the arc-shaped clamping grooves (11), arc-shaped clamping ends (12) which form detachable movable limiting positions with the arc-shaped clamping grooves (11) are arranged at the upper ends of the upper loop bars (71), and the arc-shaped clamping ends (12) and the magnetic layers (13) form magnetic attraction fit.
5. The leather stretching device as set forth in claim 4, wherein the outer side of the arc-shaped clamping groove (11) is provided with a limiting protruding portion (14) protruding relatively, the limiting protruding portion (14) corresponds to the notch of the mounting groove (10), and the limiting protruding portion (14) and the arc-shaped clamping end (12) form limiting abutting fit.

Description

Leather stretching device Technical Field The invention relates to the field of leather processing, in particular to a leather stretching device. Background Before the production of leather products, the leather to be processed needs to be flattened to ensure the surface to be flat and not wrinkled and ensure the quality of the produced leather, but the existing leather flattening device has an unsatisfactory flattening effect on the leather and cannot meet the actual production and processing requirements, so that the leather stretching flattening device for leather product production is provided at present to solve the technical problems. The utility model discloses a leather goods production is with tensile levelling device of leather, its specifically includes, including workstation, tensile subassembly, moving component and leveling subassembly, leveling subassembly includes that the motor places case two, locating plate, driving motor two, dwang, regulation pole, connecting block and briquetting, the locating plate links to each other with moving component is fixed, case two is placed to the motor and locating plate are fixed links to each other, driving motor two is fixed to be located in the motor and is placed case two, driving motor two's output rotationally runs through the motor and places case two and link to each other with the dwang is fixed, fixed the wave-shaped groove that link up that is equipped with on the locating plate, connecting block one section is articulated with the regulation pole, the connecting block other end slidable runs through the wave-shaped groove and links to each other with the briquetting is fixed. Although the technical scheme can realize the stretching and leveling functions of leather products, the leather products do not have corresponding elastic functions, and the leather is easy to break and excessively deform due to overlarge hard stretching force in the actual stretching process. Disclosure of Invention In order to solve the problems, the invention provides a leather stretching device: a leather stretching device, comprising The main frame is of a G-shaped structure, an operation platform is arranged at the upper end of the lower part of the main frame, a plurality of circumferentially distributed sliding grooves are formed in the operation platform, the sliding grooves are symmetrical in pairs, and the sliding grooves are outwards radially and outwardly extended along the length direction of the radius by taking a virtual circle as the center of the circle; The thrust device is arranged right above the operation platform and comprises a thrust cylinder and a thrust rod connected with the thrust cylinder, and the tail end of the thrust rod is provided with a hinged end; The clamping press block assembly comprises an upper press block and a lower press block which are mutually clamped and matched, an upper press surface is arranged on the lower end face of the upper press block, the lower press block and the sliding chute form sliding fit, a lower press surface is arranged at the upper end of the lower press block, and a clamping gap for clamping and fixing leather is arranged between the upper press surface and the lower press surface; when the thrust cylinder drives the thrust rod to push outwards, the claw unit clamps leather through the upper pressing block and the lower pressing block and outwards slides along the sliding groove, so that corresponding elastic stretching work is carried out on the leather. Preferably, the elastic telescopic rod comprises an upper loop rod and a lower loop rod, the upper end of the upper loop rod is hinged with the hinged end, the lower end of the upper loop rod is provided with an outwards protruding core rod, the core rod is matched with a guide rail formed by a shaft hole formed in the upper end of the lower loop rod, a thrust spring is sleeved outside the core rod, the upper end and the lower end of the thrust spring are respectively abutted to the lower end face of the upper loop rod and the upper end face of the lower loop rod, a square limiting slide block is arranged at the lower end of the core rod, and a square cavity formed in the square limiting slide block and the lower loop rod form sliding limiting fit. The thrust spring can provide corresponding elastic acting force for the elastic telescopic rod, the elastic telescopic rod has corresponding telescopic function due to the arrangement of the core rod, and the elastic telescopic rod has two functions of elasticity and telescopic simultaneously due to the arrangement of the thrust spring and the core rod. The square limit sliding block can be used for limiting the relative displacement travel of the upper loop bar and the lower loop bar, and the relative separation between the lower loop bar and the upper loop bar is avoided. Preferably, the upper pressing surface of the upper pressing block is provided with a magnetic surface layer, the lower pressing block