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CN-121974197-A - Sectional type tensioning system

CN121974197ACN 121974197 ACN121974197 ACN 121974197ACN-121974197-A

Abstract

The invention belongs to the technical field of cutting bed equipment, and particularly relates to a sectional type tensioning system. The invention provides a sectional tensioning system which is used for a paving process of an automatic cutting bed and comprises a driving deformation unit, a pretightening force unit and a push plate unit, wherein the driving deformation unit drives the pretightening force unit so that different parts can provide different thrust when the push plate unit pushes the same cross section of leather, and different sections on the same cross section can be adjusted to be independent and gradual pretightening force according to working conditions, and the sectional tensioning system has extremely low delay characteristic and realizes the paving of local hardness change of natural leather.

Inventors

  • Request for anonymity
  • Request for anonymity

Assignees

  • 江苏百琪迈智能科技有限公司

Dates

Publication Date
20260505
Application Date
20260331

Claims (9)

  1. 1. The sectional type tensioning system is characterized by comprising a driving deformation unit (1) arranged on a cutting bed beam (a), a pre-tightening unit (2) arranged in front of the cutting bed beam (a), and a push plate unit (3) arranged at the lower end of the pre-tightening unit (2) and used for flattening materials; The driving deformation unit (1) comprises a plurality of stepping motors (11) arranged in the cutting bed cross beam (a), a ball screw (12) arranged at the output end of each stepping motor (11) and extending along the cloth laying direction, and a push rod (13) arranged at the front end of each ball screw (12) through a bearing; The pre-tightening unit (2) comprises a deformation backboard (21) with two ends connected with a cutting bed beam (a), a plurality of linear guide rails (22) which are arranged on the front end face of the cutting bed beam (a) and extend along the cloth spreading direction, a sliding block (23) which is arranged in the linear guide rails (22), a roller (24) which is arranged on the rear end face of the sliding block (23) and in rolling contact with the front end face of the deformation backboard (21), a guide rod (25) which is arranged on the front end face of the sliding block (23), a sleeve (26) which is arranged on the front end of the guide rod (25) and used for installing the push plate unit (3) through a linear bearing, a compression spring (27) which is sleeved on the guide rod (25) and has two ends respectively connected with the front end face of the sliding block (23) and the rear end face of the sleeve (26), and a limit lug (28) which is arranged on the upper end of the sleeve (26), and a reference baffle shaft (29) which is arranged on the cutting bed beam (a) and is used for blocking the limit lug (28).
  2. 2. A segmented tensioning system according to claim 1, characterized in that the push plate unit (3) comprises an extension rod (31) arranged at the lower end of the sleeve (26), a push plate (32) arranged at the lower end of the extension rod (31).
  3. 3. The clearance eliminating transmission structure for a machine tool according to claim 2, wherein the push plate (32) and the extension rod (31) are hinged, and both ends of the bottom surface of the push plate (32) are provided with upper warping surfaces.
  4. 4. The clearance eliminating transmission structure for a machine tool according to claim 1, wherein the linear guide rails (22) are arranged in parallel at equal intervals along the direction of the cutting bed beam (a).
  5. 5. The clearance elimination transmission structure for machine tools according to claim 1, characterized in that the front end of the push rod (13) is provided with a ball head.
  6. 6. The clearance elimination transmission structure for machine tools according to claim 1, characterized in that the deformation back plate (21) is a carbon fiber composite plate or a spring steel plate.
  7. 7. The backlash eliminating transmission structure for machine tool as defined in claim 2, characterized in that the push plate (32) is a polyurethane plate.
  8. 8. The clearance eliminating transmission structure for a machine tool according to claim 1, wherein a ball structure is provided between the slider (23) and the linear guide (22).
  9. 9. An anti-backlash transmission for machine tools according to claim 1, characterized in that the compression spring (27) has a smaller pitch near the end of the slide (23) and a larger pitch near the end of the sleeve (26).

Description

Sectional type tensioning system Technical Field The invention belongs to the technical field of cutting bed equipment, and particularly relates to a sectional type tensioning system. Background In the automatic cutting process of natural leather, spreading and flattening are the core links for determining the precision and the material utilization rate of the final cut piece. Unlike uniform textile fabrics, natural leather has great differences in physical properties at different parts thereof due to animal physiological structures. Taking cow leather as an example, the fibers at the back part are compact, the collagen fibers are arranged tightly, so that the region is hard in texture and high in tensile strength, and can be naturally folded and flattened by applying larger tension, while the fibers at the abdomen and the edge part are loose, thinner and very easy to stretch, can be flattened by only needing small force, and can cause irreversible plastic stretching deformation if the stress is too large, so that the quality of cut pieces is seriously influenced. In the prior art, a plurality of groups of servo motors, force sensors and complex control algorithm are adopted, so that the hardware cost is high, the control software is complex, the debugging is difficult, the maintenance cost is high, the investment return rate of the equipment is low for small and medium-sized leather processing enterprises, the popularization and the application of an automation technology are limited, and the tension degree at different moments can be adjusted only even on a complex control system, so that the differential tensioning control of different partitions at the same time is difficult to realize. Therefore, the prior art has at least the following defects in the actual use process, namely the problems to be solved by the invention are that 1, the traditional cloth pushing device cannot output different pushing forces or pushing forces on the same cross section and cannot adapt to the anisotropic characteristic of the natural leather, and 2, the differential control is realized by adopting a multi-section independent servo driving matched force sensor, so that the soft leather part is easy to stretch and deform. In view of the foregoing, there is a need for a tensioning system that can achieve differential tension control over the same cross-section to address such issues. Disclosure of Invention The invention provides a sectional tensioning system which is used for a paving process of an automatic cutting bed and comprises a driving deformation unit, a pretightening force unit and a push plate unit, wherein the driving deformation unit drives the pretightening force unit so that different parts can provide different thrust when the push plate unit pushes the same cross section of leather, and different sections on the same cross section can be adjusted to be independent and gradual pretightening force according to working conditions, and the sectional tensioning system has extremely low delay characteristic and realizes the paving of local hardness change of natural leather. The invention overcomes the defects in the prior art, and provides a sectional tensioning system which comprises a driving deformation unit arranged on a cutting bed beam, a pre-tightening unit arranged in front of the cutting bed beam, a roller wheel arranged at the lower end of the pre-tightening unit and used for flattening materials, a guide rod arranged on the front end face of the slider, a sleeve arranged at the front end of the guide rod and used for installing the roller wheel unit, a ball screw arranged at the output end of the stepping motor and extending along the cloth laying direction, a push rod arranged at the front end of the ball screw through a bearing, a deformation back plate with two ends connected with the cutting bed beam, a plurality of linear guide rails arranged on the front end face of the cutting bed beam and extending along the cloth laying direction, a slider arranged in the linear guide rail in a sliding manner, a roller wheel arranged on the rear end face of the slider and in rolling contact with the front end face of the deformation back plate, a guide rod arranged on the front end face of the slider, a sleeve sleeved on the guide rod and provided with the guide rod in a sliding manner, two ends respectively connected with the front end face of the slider and the sleeve, a compression sleeve arranged on the two ends of the slider and the base sleeve used for limiting the two ends arranged on the cutting bed beam. The further preferable technical scheme is that the push plate unit comprises an extension rod arranged at the lower end of the sleeve and a push plate arranged at the lower end of the extension rod. The further preferable technical scheme is that the push plate is hinged with the extension rod, and the two ends of the bottom surface of the push plate are provided with upper warping surfaces. The fur