Trimming device for leather processing

Abstract

The utility model discloses a trimming device for leather processing, which is used for cutting and trimming leather and is characterized by comprising a flattening device, a conveying device and a cutting machine, the cutting machine is arranged at the right end of the conveying device; the flattening device comprises a conveying roller and a heating device; the heating device is positioned in the conveying roller; lining ironing cloth is arranged outside the conveying rollers; a water mist device is arranged at an inlet of the conveying roller; the cutting machine comprises a positioning device, a trimming knife, a lifting device, a monitoring device, a rack and an electric push rod. The top of the positioning device is connected with the upper end of the rack; the trimming knife is connected with the upper end of the rack through an electric push rod; the bottom end of the lifting device is connected with the rack; the monitoring device is located in the middle of the rack. Leather is ironed and flattened through the heating device and the water mist device, wrinkles of the leather can be unfolded while the leather is conveyed through the conveying rollers, the leather is fixed through the positioning device, then cutting and trimming are conducted through the trimming knife, the overall structure is simple, and operation is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of leather processing, in particular to a trimming device for leather processing. Background Art

[0002] Leather is a denatured, non-perishable animal skin obtained through physical and chemical processes such as depilation and tanning. It is divided into four types according to the manufacturing method: genuine leather, regenerated leather, artificial leather and synthetic leather. Leather is composed of natural protein fibers tightly woven in three-dimensional space. Its surface has a special grain layer with natural grain and luster, and feels comfortable. Leather products are products made from fur and leather as the main raw materials. They have a wide range of uses and can be used to make leather products such as leather clothes, leather bags, leather shoes, belts, bags, etc. After processing and tanning, the leather needs to be cut, shaped, sewn and assembled according to the products to be made, and then post-processed and modified. When cutting the leather, the leather needs to be trimmed. Leather trimming is an important part of the leather product processing process. Its main purpose is to make the edges of the leather smoother and neater, and improve the overall aesthetics of the product.

[0003] When processing bags, the cutting and trimming of leather is done by using a die-cutting tool to cut the entire piece of leather into a specified shape to complete the trimming of the leather. Often, multiple pieces of leather are stacked together for cutting and trimming. However, when the existing trimming device is used for cutting when multiple layers are placed, it is difficult to align the leather because the leather is not limited and fixed, and a secondary trimming is required. In addition, the leather may be improperly tanned during the tanning and stacking process, resulting in wrinkles. Although the wrinkles of the leather can be flattened or pressed before cutting when a single layer is placed to avoid secondary trimming, the work efficiency is low and it is time-consuming and labor-intensive. When multiple layers of leather are stacked for cutting and trimming, although it is quick and convenient, the surface looks flat when cutting, but the leather inside still has wrinkles, causing some leather to overlap. In the subsequent sewing process, the wrinkles affect the appearance, or there will be excess edges after flattening, requiring secondary trimming, which is troublesome to operate. Utility Model Content

[0004] The purpose of the utility model is to provide a trimming device for leather processing which can smooth leather wrinkles, facilitate cutting and trimming, and is easy to operate, so as to solve the technical problems that leather is prone to wrinkles during tanning or processing, which affects the appearance, and that secondary trimming is required after cutting and trimming due to the wrinkles, which is time-consuming and labor-intensive.

[0005] In order to solve the above technical problems, the solution adopted by the utility model is as follows:

[0006] A trimming device for leather processing comprises a leveling device, a conveying device and a cutting machine; the left end of the conveying device is the leveling device, and the right end is the cutting machine; the leveling device comprises a conveying roller and a heating device; the heating device is located inside the conveying roller; a lining ironing cloth is provided outside the conveying roller; a water mist device is provided at the inlet of the conveying roller; the cutting machine comprises a positioning device, a trimming knife, a lifting device, a monitoring device, a frame and an electric push rod; the top end of the positioning device is fixedly connected to the upper end of the frame; the trimming knife is connected to the upper end of the frame through the electric push rod; the bottom end of the lifting device is connected to the frame; and the monitoring device is fixedly installed in the middle of the frame.

[0007] Furthermore, the positioning device includes a hydraulic rod and a positioning plate; the upper end of the hydraulic rod is fixedly connected to the frame, and the lower end is fixedly connected to the positioning plate; the positioning plate is in a "mouth" shape when viewed from above. The hydraulic rod drives the positioning plate to move downward to press the leather, and the "mouth"-shaped positioning plate positions the four edges of the leather to avoid the phenomenon that the leather moves when the trimming knife cuts and trims the leather, resulting in poor trimming effect.

[0008] Furthermore, a flannel layer is provided on the outside of the positioning plate, and the positioning plate contacts the leather through the flannel layer, so as to avoid abrasion caused by the positioning plate when positioning the leather.

[0009] Furthermore, the lifting device includes a placement plate and an elevator; the bottom end of the elevator is connected to the frame, and the top end is connected to the placement plate; a detachable baffle is provided on one side of the placement plate. The leather is placed on the placement plate conveyed by the conveying device, and the height of the leather on the placement plate can be monitored in combination with the monitoring device, and the elevator is controlled to descend so that the highest point is parallel to the output end of the transmission device, which is convenient for conveying and placing the leather.

[0010] Furthermore, two elevators are provided, which are respectively installed on both sides of the bottom end of the placement board. The elevators on both sides of the bottom end of the placement board can adjust the placement board to an inclined state, which is convenient for placing leather and avoiding stacking and folding together. When performing trimming operations, the elevators are raised to make the placement board parallel to the trimming knife, which is convenient for the trimming knife to cut and trim the leather.

[0011] Furthermore, the monitoring device is an infrared sensor; a corresponding receiving device is provided at a diagonally opposite corner of the infrared sensor for receiving infrared signals, and a control device is provided on the frame; the infrared sensor is electrically connected to the control device. The infrared sensor transmits a signal to the receiving device, and when the leather blocks the signal of the infrared sensor, the control device controls the elevator to descend, and when the receiving device receives the signal, it stops descending.

[0012] Furthermore, the conveying rollers are provided in two rows, upper and lower, and the conveying rollers in the upper row are provided with an adjusting device. The conveying rollers in the upper row can be adjusted in height by the adjusting device, so as to be suitable for ironing and flattening leathers of different thicknesses.

[0013] The working principle of the utility model is as follows:

[0014] When in use, the upper and lower rows of conveyor rollers are adjusted through the adjustment device, and then the leather is placed in the conveyor rollers. The water mist device sprays water mist on the leather, and the leather is ironed flat through the heating device inside the conveyor roller combined with the water mist. The ironed leather is conveyed to the placement plate of the lifting device of the cutting machine through the transmission device. The infrared sensor of the monitoring device detects the height of the leather on the lifting device in real time and transmits the signal to the control device. When the elevator on one side drops to the lowest point, the elevator rises to keep the placement plate parallel, and the hydraulic rod of the positioning device moves downward, driving the positioning plate to press down the four sides of the leather. Finally, the electric push rod drives the trimming knife to cut and trim the leather.

[0015] The beneficial effects of the utility model are as follows:

[0016] 1. The utility model irons and flattens the leather through the heating device and the water mist device inside the conveying roller of the flattening device. The conveying roller can also pull the leather to unfold while transporting the leather to avoid the existence of leather wrinkles. The leather is limited in position by the positioning device of the cutting machine and then cut and trimmed by the trimming knife. The overall structure is simple and easy to operate.

[0017] 2. The lining ironing cloth of the utility model prevents the leather from directly contacting the heat source, thus preventing the internal fiber structure of the leather from being damaged due to excessive temperature. The positioning plate contacts the leather through the flannel layer, thus preventing the leather and the positioning plate from rubbing against each other during cutting and trimming, thereby damaging the leather and affecting the appearance of the leather.

[0018] 3. The conveying rollers of the utility model are divided into two rows, the upper row of conveying rollers can be adjusted in height by an adjusting device, which is convenient for ironing leather of different thicknesses. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0020] Figure 2 It is a front view cross-sectional structural schematic diagram of the utility model;

[0021] Figure 3 This is a schematic diagram of the cross-sectional structure of the conveying roller of the utility model;

[0022] Figure 4 It is a schematic diagram of the cross-sectional structure of the positioning plate of the utility model.

[0023] In the figure: 1. Smoothing device; 101. Conveying roller; 102. Heating device; 103. Lining ironing cloth; 104. Water mist device; 105. Adjusting device; 2. Conveying device; 3. Cutting machine; 4. Positioning device; 401. Hydraulic rod; 402. Positioning plate; 403. Flannel layer; 5. Trimming knife; 6. Lifting device; 601. Placing plate; 602. Lifter; 7. Monitoring device; 8. Rack; 9. Electric push rod; 10. Leather. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] In the description of the present utility model, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0026] The following is a further detailed description of a trimming device for leather processing according to the utility model in conjunction with the accompanying drawings: Example 1

[0027] A trimming device for leather processing, which is used for cutting and trimming leather 10, comprises a leveling device 1, a conveying device 2 and a cutting machine 3; the left end of the conveying device 2 is the leveling device 1, and the right end is the cutting machine 3; the leveling device 1 comprises a conveying roller 101 and a heating device 102; the heating device 102 is located inside the conveying roller 101; an ironing cloth 103 is provided outside the conveying roller 101; a water mist device 104 is provided at the inlet of the conveying roller 101; the cutting machine 3 comprises a positioning device 4, a trimming knife 5, a lifting device 6, a monitoring device 7, a frame 8 and an electric push rod 9; the top end of the positioning device 4 is fixedly connected to the upper end of the frame 8; the trimming knife 5 is connected to the upper end of the frame 8 through the electric push rod 9; the bottom end of the lifting device 6 is connected to the frame 8; the monitoring device 7 is fixedly installed in the middle of the frame 8.

[0028] The working principle of this embodiment is as follows:

[0029] When in use, the leather is placed in the conveying roller 101, and the water mist device 104 sprays water mist on the leather. The leather is ironed and flattened by the heating device 102 inside the conveying roller 101. The ironed leather is conveyed to the lifting device 6 of the cutting machine 3 through the conveying device 2. The monitoring device 7 detects the height of the leather on the lifting device 6 in real time, the positioning device 4 presses down the four sides of the leather, and the electric push rod 9 drives the trimming knife 5 to cut and trim the leather. Example 2

[0030] The difference from the embodiment 1 is that the positioning device 4 comprises a hydraulic rod 401 and a positioning plate 402; the upper end of the hydraulic rod 401 is fixedly connected to the frame 8, and the lower end is fixedly connected to the positioning plate 402; the positioning plate 402 is in a "mouth" shape when viewed from above; and a flannel layer 403 is provided on the outside of the positioning plate 402. The hydraulic rod 401 drives the positioning plate 402 to move downward, and the positioning plate 402 contacts and presses the leather through the flannel layer 403. The "mouth"-shaped positioning plate 402 positions the four edges of the leather, making it convenient for the trimming knife 5 to cut and trim the leather.

[0031] The working principle of this embodiment is the same as that of Embodiment 1. Example 3

[0032] The difference from Example 2 is that the lifting device 6 includes a placement plate 601 and a lift 602; the bottom end of the lift 602 is connected to the frame 8, and the top end is connected to the placement plate 601; there are two lifts 602, which are respectively installed on both sides of the bottom end of the placement plate 601; a removable baffle is provided on one side of the placement plate 601; the monitoring device 7 is an infrared sensor; a receiving device is provided at the diagonal corner of the infrared sensor; a control device is provided on the frame 8; and the infrared sensor is electrically connected to the control device.

[0033] The leather is placed on the placement plate 601 transmitted by the conveying device 2. The elevators 602 on both sides of the bottom of the placement plate 601 can adjust the placement plate 601 to an inclined state. The infrared sensor of the monitoring device 7 transmits a signal to the direction of the receiving device. When the leather blocks the signal of the infrared sensor, the control device controls the elevator 602 to descend so that the highest point is parallel to the output end of the transmission device. When the receiving device can receive the signal, it stops descending. When performing the trimming operation, the elevator 602 rises to make the placement plate 601 parallel to the trimming knife 5, which is convenient for the trimming knife 5 to cut and trim the leather.

[0034] The working principle of this embodiment is the same as that of Embodiment 2. Example 4

[0035] The difference from the second embodiment is that the conveying rollers 101 are provided in two rows, upper and lower, and the conveying rollers 101 in the upper row are provided with adjusting devices 105. The conveying rollers 101 in the upper row can be adjusted in height by the adjusting devices 105, and can be adapted to iron leathers of different thicknesses.

[0036] The working principle of this embodiment is the same as that of Embodiment 2.

[0037] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A trimming device for leather processing, for cutting and trimming leather (10), characterized in that: It comprises a leveling device (1), a conveying device (2) and a cutting machine (3); the left end of the conveying device (2) is the leveling device (1), and the right end is the cutting machine (3); The smoothing device (1) comprises a conveying roller (101) and a heating device (102); the heating device (102) is located inside the conveying roller (101); a lining ironing cloth (103) is provided outside the conveying roller (101); a water mist device (104) is provided at the inlet of the conveying roller (101); The cutting machine (3) comprises a positioning device (4), a trimming knife (5), a lifting device (6), a monitoring device (7), a frame (8) and an electric push rod (9); the top end of the positioning device (4) is fixedly connected to the upper end of the frame (8); the trimming knife (5) is connected to the upper end of the frame (8) via the electric push rod (9); the bottom end of the lifting device (6) is connected to the frame (8); and the monitoring device (7) is fixedly mounted in the middle of the frame (8).

2. The trimming device for leather processing according to claim 1, characterized in that: The positioning device (4) comprises a hydraulic rod (401) and a positioning plate (402); the upper end of the hydraulic rod (401) is fixedly connected to the frame (8), and the lower end is fixedly connected to the positioning plate (402); the positioning plate (402) is in a "mouth" shape when viewed from above.

3. The trimming device for leather processing according to claim 2, characterized in that: A flannel layer (403) is provided on the outside of the positioning plate (402).

4. The trimming device for leather processing according to claim 1, characterized in that: The lifting device (6) comprises a placement plate (601) and a lift (602); the bottom end of the lift (602) is connected to the frame (8), and the top end is connected to the placement plate (601).

5. The trimming device for leather processing according to claim 4, characterized in that: Two elevators (602) are provided, which are respectively installed on both sides of the bottom end of the placement plate (601); a detachable baffle is provided on one side of the placement plate (601).

6. The trimming device for leather processing according to claim 1, characterized in that: The monitoring device (7) is an infrared sensor; a receiving device is provided at a diagonally opposite corner of the infrared sensor; a control device is provided on the frame (8); and the infrared sensor is electrically connected to the control device.

7. The trimming device for leather processing according to claim 1, characterized in that: The conveying rollers (101) are provided in two rows, upper and lower, and the conveying rollers (101) in the upper row are provided with adjustment devices (105).

Images