Leather stretcher and leather production device

Abstract

The utility model discloses a leather stretcher and a leather production device. The leather stretcher comprises a first guide rail, a stretching piece and a clamping piece. And the clamping piece is used for clamping the leather. The first guide rail is arranged in the circumferential direction of the leather. One end of the stretching part is movably arranged on the first guide rail so as to adjust the extending direction of the stretching part, the clamping part is connected to the end, away from the first guide rail, of the stretching part, and the stretching part is configured to drive the clamping part to move in the direction close to the first guide rail so as to stretch the leather. Leather is clamped through the clamping piece, the clamping piece is driven to move through the stretching piece, and therefore stretching of the leather is achieved. Meanwhile, the end, deviating from the leather, of the stretching part is movably arranged on the first guide rail, so that the end, deviating from the leather, of the stretching part can move in the circumferential direction of the leather, the leather stretching angle is adjusted, the applicability of the leather stretcher is improved, the yield of the leather is increased, and cost is saved.

Description

Technical Field

[0001] The present application relates to the technical field of leather production, and in particular to a leather stretcher and a leather production device. Background Art

[0002] During leather processing, wet leather often needs to be dried. During the drying process, the leather is fixed and then dried, and the leather is stretched simultaneously during the drying process. Leather drying is a critical step in leather processing. After the tanning process, the moisture content of the leather reaches 60%. After the leather drying process, the moisture content of the leather is reduced to approximately 20%, and the surface area of the leather after stretching can increase by 8% to 16%.

[0003] Currently, leather stretching is typically done manually by clamping the leather's edges with clamps. This repetitive manual effort, which requires manual gripping and removal of the leather, results in significant labor waste and low production efficiency. Currently, each leather stretching operation requires six to eight people. Therefore, there is an urgent need for automated equipment to replace or reduce manual labor.

[0004] CN209162101U discloses a clamping member for an automatic leather stretching machine. The clamping member is mounted on a guide rail and is driven to move on the guide rail by a linear drive mechanism. The clamping member includes a clamping member body having a movable through-hole through which the guide rail passes, an opening for leather to extend into on one side of the clamping member body, and a leather clamping device provided on the clamping member body at the opening. The advantages of the utility model are that the leather clamping device cooperates with a one-way check mechanism to clamp the leather. The one-way check mechanism ensures that the clamping member is clamped on the guide rail to keep the leather taut, thereby achieving the clamping and tensioning of the leather, providing a basis for subsequent automatic leather clamping and stretching, reducing manual labor, and improving work efficiency.

[0005] However, although the above solution can realize the automation of leather stretching to a certain extent, different leathers have different edge shapes and different angles required for leather stretching. Stretching different types of leather at the same stretching angle may cause the leather to deform and thus affect the yield rate.

[0006] Therefore, how to improve the applicability of leather stretchers, thereby increasing the yield rate of leather and saving costs has become one of the problems that need to be solved urgently. Summary of the Invention

[0007] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a leather stretcher and a leather production device, which can improve the applicability of the leather stretcher, thereby increasing the yield rate of leather and saving costs.

[0008] A leather stretcher according to an embodiment of the first aspect of the present application. The leather stretcher includes a first guide rail, a stretching member, and a clamping member. The clamping member is used to clamp the leather. The first guide rail is arranged around the circumference of the leather. One end of the stretching member is movably arranged on the first guide rail to adjust the extension direction of the stretching member. The clamping member is connected to the end of the stretching member away from the first guide rail. The stretching member is configured to drive the clamping member to move in a direction close to the first guide rail to stretch the leather.

[0009] The leather stretcher according to the embodiments of the present application has at least the following beneficial effects: the leather is clamped by the clamping member and driven to move by the stretching member, thereby achieving stretching of the leather. Furthermore, the end of the stretching member facing away from the leather is movably disposed on the first guide rail, allowing the end of the stretching member facing away from the leather to move circumferentially around the leather, thereby adjusting the angle at which the leather is stretched. This improves the applicability of the leather stretcher, thereby increasing the yield rate of the leather and saving costs.

[0010] In some embodiments, a guide wheel cooperating with the first guide rail is provided at one end of the stretching member away from the clamping member.

[0011] In some embodiments, one of the end of the stretching member facing away from the clamping member and the first guide rail is provided with a ratchet, and the other end is provided with ratchet teeth cooperating with the ratchet.

[0012] In some embodiments, there are multiple clamping members, and the multiple clamping members are arranged at intervals around the circumference of the leather. There are multiple stretching members, and the multiple clamping members are arranged in a one-to-one correspondence with each stretching member.

[0013] In some embodiments, the number of the clamping members is 73.

[0014] In some embodiments, the leather stretcher further includes a second guide rail, the clamping member is movably disposed on the second guide rail, and one end of the second guide rail close to the first guide rail is connected to the stretching member.

[0015] In some embodiments, one of the clamping member and the second guide rail is provided with a ratchet, and the other is provided with ratchet teeth cooperating with the ratchet.

[0016] In some embodiments, the clamping member includes a base and a clamping arm. The base is movably disposed on the second guide rail. One end of the clamping arm is disposed on the base, and the other end is configured to be able to rotate toward or away from the base.

[0017] In some embodiments, the clamping member further includes a fixing seat and an elastic member, the fixing seat and the clamping arm are arranged on the same side of the base, and the two ends of the elastic member are respectively connected to the fixing seat and the end of the clamping arm away from the base.

[0018] A leather production device according to an embodiment of the second aspect of the present application includes the leather stretcher described in any of the above embodiments.

[0019] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present application is further described below with reference to the accompanying drawings and embodiments, wherein:

[0021] Figure 1 A schematic diagram of a leather production device according to an embodiment of the present application;

[0022] Figure 2 A schematic diagram of a leather stretcher according to an embodiment of the present application;

[0023] Figure 3 This is a partial schematic diagram of a leather stretcher according to an embodiment of the present application;

[0024] Figure 4 A schematic diagram of the coordination of the clamping member and the stretching member according to an embodiment of the present application;

[0025] Figure 5 Schematic diagram of a clamping member according to an embodiment of the present application.

[0026] Reference numerals: leather stretcher 1 , first guide rail 10 , stretching member 20 , clamping member 30 , base 31 , clamping arm 32 , fixing seat 33 , elastic member 34 , second guide rail 40 , leather production device 100 . DETAILED DESCRIPTION

[0027] The following describes in detail embodiments of the present application. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application.

[0028] In the description of this application, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on this application.

[0029] In the description of this application, "several" means more than one, "plurality" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0030] In the description of this application, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in this application based on the specific content of the technical solution.

[0031] In the description of this application, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples.

[0032] Please refer to Figures 1 to 5 , Figure 1 This is a schematic diagram of a leather production device according to an embodiment of the present application. Figure 2 This is a schematic diagram of a leather stretcher according to an embodiment of the present application. Figure 3 This is a partial schematic diagram of the leather stretcher according to an embodiment of the present application. Figure 4 This is a schematic diagram of the coordination of the clamping member and the stretching member according to an embodiment of the present application. Figure 5 Schematic diagram of a clamping member according to an embodiment of the present application.

[0033] An embodiment of the present application provides a leather stretcher 1. The leather stretcher 1 includes a first guide rail 10, a stretching member 20, and a clamping member 30. The clamping member 30 is used to clamp the leather 2. The first guide rail 10 is arranged around the circumference of the leather 2. One end of the stretching member 20 is movably disposed on the first guide rail 10 to adjust the extension direction of the stretching member 20. The clamping member 30 is connected to the end of the stretching member 20 that is away from the first guide rail 10. The stretching member 20 is configured to move the clamping member 30 in a direction closer to the first guide rail 10 to stretch the leather 2.

[0034] In some embodiments, the first guide rail 10 can be arranged around the circumference of the leather 2 , and the first guide rail 10 can be arranged around the leather 2 .

[0035] In some embodiments, the clamping member 30 may be connected to one end of the stretching member 20 , and the other end of the stretching member 20 may be connected to the first guide rail 10 .

[0036] In some embodiments, after the clamping member 30 clamps the leather 2, the stretching member 20 can drive the clamping member 30 to move away from the center of the leather 2, thereby stretching the leather 2. After the stretching is completed, the clamping member 30 releases the leather 2 to facilitate the transfer of the leather 2 to the next process. After the stretching process for one leather 2 is completed, the stretching member 20 can drive the clamping member 30 to move toward the center of the leather 2 to prepare for the next stretching process for the leather 2.

[0037] In some embodiments, the stretching member 20 may have a contraction function. When the leather 2 needs to be stretched, the stretching member 20 may contract, thereby enabling the clamping member 30 to stretch the leather 2. When the clamping member 30 needs to be reset, the stretching member 20 may extend, thereby enabling the clamping member 30 to be reset.

[0038] In some embodiments, the stretching member 20 may have a power source, such as a cylinder, a motor, or the like.

[0039] In some embodiments, the extension direction of the stretching member 20 is the same as the direction in which the leather 2 is stretched after the clamping member 30 clamps the leather 2. One end of the stretching member 20 is connected to the clamping member 30, and the other end is movably mounted on the first guide rail 10. That is, the other end can move along the extension direction of the first guide rail 10, so that the other end can move around the circumference of the leather 2, causing the extension direction of the stretching member 20 to change, thereby changing the direction in which the clamping member 30 stretches the leather 2.

[0040] When facing different leathers 2 , the edges of the leathers 2 are also different. For the leathers 2 with different edges, the extension direction of the stretching member 20 is adjusted, thereby adjusting the direction in which the clamping member 30 stretches the leather 2 .

[0041] The leather stretcher 1 according to the embodiment of the present application has at least the following beneficial effects: the leather 2 is clamped by the clamping member 30, and the clamping member 30 is driven to move by the stretching member 20, thereby stretching the leather 2. At the same time, the end of the stretching member 20 facing away from the leather 2 is movably disposed on the first guide rail 10, so that the end of the stretching member 20 facing away from the leather 2 can move around the circumference of the leather 2, thereby adjusting the angle at which the leather 2 is stretched, improving the applicability of the leather stretcher 1, thereby increasing the yield rate of the leather 2, and saving costs.

[0042] In some embodiments, a guide wheel that cooperates with the first guide rail 10 is provided at one end of the stretching member 20 away from the clamping member 30 .

[0043] In some embodiments, a guide wheel is provided at the end of the stretching member 20 away from the clamping member 30, so that when the end of the stretching member 20 away from the clamping member 30 needs to move on the first guide rail 10, the guide wheel cooperates with the first guide rail 10 to improve the convenience of movement, reduce the risk of interference or unstable movement during movement, and improve the convenience of movement.

[0044] In some embodiments, one of the ends of the stretching member 20 facing away from the clamping member 30 and the first guide rail 10 is provided with a ratchet, and the other end is provided with ratchet teeth that cooperate with the ratchet.

[0045] In some embodiments, a ratchet can be provided at the end of the stretching member 20 away from the clamping member 30, and ratchet teeth can be provided at the first guide rail 10. When the end of the stretching member 20 away from the clamping member 30 needs to move along the first guide rail 10, the ratchet teeth release the ratchet wheel, allowing the stretching member 20 to move normally. After the end of the stretching member 20 away from the clamping member 30 moves to the set position, that is, after the angle of the clamping member 30 stretching the leather 2 is adjusted, the ratchet teeth cooperate with the ratchet wheel to fix the end of the stretching member 20 away from the clamping member 30 on the first guide rail 10, thereby reducing the probability of changes in the extension angle of the stretching member 20 and the probability of changes in the stretching angle when stretching the leather 2, thereby improving the yield rate and saving costs.

[0046] In some embodiments, a ratchet can be provided at the end of the stretching member 20 away from the clamping member 30, and a ratchet can be provided at the first guide rail 10. When the end of the stretching member 20 away from the clamping member 30 needs to move along the first guide rail 10, the ratchet releases the ratchet, allowing the stretching member 20 to move normally. After the end of the stretching member 20 away from the clamping member 30 moves to the set position, that is, after the angle of the clamping member 30 stretching the leather 2 is adjusted, the ratchet cooperates with the ratchet to fix the end of the stretching member 20 away from the clamping member 30 on the first guide rail 10, thereby reducing the probability of changes in the extension angle of the stretching member 20 and the probability of changes in the stretching angle when stretching the leather 2, improving the yield rate, and saving costs.

[0047] In some embodiments, there are multiple clamping members 30 , which are arranged at intervals around the circumference of the leather 2 ; there are multiple stretching members 20 , which are arranged in a one-to-one correspondence with each stretching member 20 .

[0048] In some embodiments, the number of clamping members 30 and the number of tensioning members 20 may be the same.

[0049] In some embodiments, the included angles between two adjacent clamping members 30 and the center line of the leather 2 may be the same or different.

[0050] The leather 2 is clamped by a plurality of clamping members 30, thereby improving the stability of the clamped leather 2 and also improving the stretching effect and product quality.

[0051] In some embodiments, the number of the clamping members 30 is 73.

[0052] In some embodiments, the number of the stretching members 20 may also be 73.

[0053] In some embodiments, the leather stretcher 1 further includes a second guide rail 40 , the clamping member 30 is movably disposed on the second guide rail 40 , and one end of the second guide rail 40 close to the first guide rail 10 is connected to the stretching member 20 .

[0054] In some embodiments, an end of the tensioning member 20 facing away from the first guide rail 10 may be connected to the second guide rail 40 .

[0055] In some embodiments, the stretching member 20 can move the second guide rail 40 to achieve movement of the clamping member 30 .

[0056] In some embodiments, when the clamping member 30 needs to be moved over a large range, stretching can be achieved by the stretching member 20. When the clamping member 30 needs to be moved over a small range, stretching can be achieved by moving the clamping member 30 on the second guide rail 40.

[0057] In some embodiments, after the clamping member 30 clamps the leather 2, it can move on the second guide rail 40 away from the center of the leather 2, thereby stretching the leather 2. After the stretching is completed, the clamping member 30 releases the leather 2 to facilitate the transfer of the leather 2 to the next process. After the stretching process for one leather 2 is completed, the stretching member 20 can move on the second guide rail 40 toward the center of the leather 2 to prepare for the next stretching process for the leather 2.

[0058] The second guide rail 40 is provided to realize the movement of the clamping member 30 , thereby realizing the stretching of the leather 2 , thereby improving the stretching accuracy and the convenience of the stretching.

[0059] In some embodiments, one of the clamping member 30 and the second guide rail 40 is provided with a ratchet, and the other is provided with ratchet teeth that cooperate with the ratchet.

[0060] In some embodiments, the second guide rail 40 may be equipped with a ratchet wheel, and the clamping member 30 may be equipped with ratchet teeth. When the clamping member 30 needs to move along the second guide rail 40, the ratchet teeth release the ratchet wheel, allowing the clamping member 30 to move normally. After the clamping member 30 moves to the set position, that is, after the distance the clamping member 30 stretches the leather 2 is adjusted, the ratchet teeth engage the ratchet wheel to secure the clamping member 30 to the second guide rail 40. This reduces the probability of dimensional changes during stretching of the leather 2, improves product yield, and saves costs.

[0061] In some embodiments, the clamping member 30 may be equipped with ratchet teeth, and the second guide rail 40 may be equipped with a ratchet wheel. When the clamping member 30 needs to move along the second guide rail 40, the ratchet teeth release the ratchet wheel, allowing the clamping member 30 to move normally. After the clamping member 30 moves to the set position, that is, after the distance the clamping member 30 stretches the leather 2 is adjusted, the ratchet teeth and ratchet wheel cooperate to secure the clamping member 30 to the second guide rail 40, reducing the probability of dimensional changes during stretching of the leather 2, improving product yield, and saving costs.

[0062] In some embodiments, the clamping member 30 includes a base 31 and a clamping arm 32. The base 31 is movably disposed on the second guide rail 40. One end of the clamping arm 32 is disposed on the base 31, and the other end is configured to be able to rotate toward or away from the base 31.

[0063] In some embodiments, the clamping arm 32 and the base 31 may be connected via a rotating shaft, thereby enabling the rotation of the clamping arm.

[0064] In some embodiments, the base 31 is movably disposed on the second guide rail 40 , and one of the base 31 and the second guide rail 40 may be provided with ratchet teeth, and the other may be provided with a ratchet wheel.

[0065] In some embodiments, the base 31 may be provided with guide wheels that cooperate with the second guide rail 40 .

[0066] In some embodiments, the clamping arm 32 can be rotated toward or away from the base 31 to clamp and release the leather 2. When the leather 2 needs to be clamped, the clamping arm 32 is rotated toward the base 31, and the leather 2 is placed between the clamping arm 32 and the base 31. When the leather 2 needs to be released, the clamping arm 32 is rotated away from the base 31, allowing the leather 2 to be removed from between the clamping arm 32 and the base 31.

[0067] The leather 2 can be clamped and taken out by cooperating with the clamping arm 32 and the base 31 , thereby improving the convenience of operation.

[0068] In some embodiments, the clamping member 30 further includes a fixing seat 33 and an elastic member 34. The fixing seat 33 and the clamping arm 32 are arranged on the same side of the base 31. The two ends of the elastic member 34 are respectively connected to the fixing seat 33 and the end of the clamping arm 32 facing away from the base 31.

[0069] In some embodiments, the fixing seat 33 and the base 31 may be integrally formed.

[0070] In some embodiments, the clamping arm 32 and the fixing seat 33 may both be disposed above the base 31 .

[0071] In some embodiments, the clamping arm 32 and the fixing seat 33 may both be disposed below the base 31 .

[0072] In some embodiments, the elastic member 34 may be a spring. When the clamping member 30 clamps the leather 2, the elastic member 34 resets, causing the other end of the clamping arm 32 to rotate away from the fixing seat 33, thereby rotating the other end of the clamping arm 32 toward the base 31. When the clamping member 30 clamps the leather 2, the elastic member 34 is compressed, causing the other end of the clamping arm 32 to rotate toward the fixing seat 33, thereby rotating the other end of the clamping arm 32 away from the base 31. The automatic reset of the elastic member 34 allows the leather 2 to be clamped, improving the convenience of clamping the leather 2 and saving manpower.

[0073] An embodiment of the present application provides a leather production device 100, comprising the leather stretcher 1 of any of the above embodiments.

[0074] The embodiments of the present application have been described in detail above with reference to the accompanying drawings. However, the present application is not limited to the above embodiments. Various modifications can be made within the scope of knowledge possessed by ordinary technicians in the relevant technical field without departing from the purpose of the present application. In addition, the embodiments of the present application and the features of the embodiments can be combined with each other unless there is a conflict.

Claims

1. A leather stretcher, characterized in that: The leather stretcher comprises: a clamping piece, the clamping piece being used to clamp the leather; a first guide rail disposed around the circumference of the leather; A stretching member, one end of which is movably arranged on the first guide rail to adjust the extension direction of the stretching member, the clamping member is connected to the end of the stretching member away from the first guide rail, and the stretching member is configured to drive the clamping member to move in a direction close to the first guide rail to stretch the leather.

2. The leather stretcher according to claim 1, characterized in that One end of the stretching member facing away from the clamping member is provided with a guide wheel that cooperates with the first guide rail.

3. The leather stretcher according to claim 2, characterized in that: One of the ends of the stretching member facing away from the clamping member and the first guide rail is provided with a ratchet, and the other end is provided with ratchet teeth matched with the ratchet.

4. The leather stretcher according to claim 1, characterized in that There are multiple clamping members, and the multiple clamping members are arranged at intervals around the circumference of the leather. There are multiple stretching members, and the multiple clamping members are arranged in a one-to-one correspondence with each stretching member.

5. The leather stretcher according to claim 4, characterized in that: The number of the clamping members is 73.

6. The leather stretcher according to claim 1, characterized in that: The leather stretcher further comprises a second guide rail, the clamping member is movably arranged on the second guide rail, and one end of the second guide rail close to the first guide rail is connected to the stretching member.

7. The leather stretcher according to claim 6, characterized in that: One of the clamping member and the second guide rail is provided with a ratchet, and the other is provided with ratchet teeth matched with the ratchet.

8. The leather stretcher according to claim 6, characterized in that The clamping member comprises: a base, the base being movably disposed on the second guide rail; A clamping arm, one end of which is disposed on the base, and the other end of which is configured to be rotatable toward or away from the base.

9. The leather stretcher according to claim 8, characterized in that: The clamping member further comprises a fixing seat and an elastic member. The fixing seat and the clamping arm are arranged on the same side of the base. Two ends of the elastic member are respectively connected to the fixing seat and one end of the clamping arm away from the base.

10. A leather production device, characterized in that: The leather production device comprises: The leather stretcher according to any one of claims 1 to 9.

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