All-in-one machine end sewing scissors
By adopting a transitional arc bend and a rubber base pad design in the sewing head scissors of the all-in-one machine, the problem of uneven force on the scissors is solved, which improves the neatness and stability of thread cutting, and reduces the difficulty of operation and maintenance costs.
Patent Information
- Application Number
- CN202520055409.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-10
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2035-01-10
AI Technical Summary
Traditional all-in-one sewing machine scissors use a direct bending structure for the scissor section, resulting in uneven and unstable thread cutting, which affects product quality and production efficiency, and also causes operator fatigue.
It adopts a transitional arc bending structure, with a transitional arc bending at the bottom of the scissors that moves within the built-in groove. Combined with a spring spindle and compression spring, it ensures that the scissors are subjected to uniform force, and the stability is increased by a rubber bottom pad and anti-slip texture.
Improved trimming neatness reduces the need for secondary trimming, increases production efficiency, reduces vibration and operator fatigue, extends equipment life, and lowers maintenance costs.
Smart Images
Figure CN223674949U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the tailor tool field especially relates to an all-in-one machine sewing head scissors. BACKGROUND
[0002] In the field of textile production, especially in the manufacturing process of sock products, all-in-one machine sewing head scissors play a crucial role. All-in-one machine sewing head scissors are usually used to cut the excess thread at the sewing joint of the sock toe to complete the final processing procedure of the sock. However, the traditional all-in-one machine sewing head scissors have many problems in the process of use.
[0003] The traditional all-in-one machine sewing head scissors often adopt a direct bending way for the scissors part in the structural design. This direct bending structure will cause a series of adverse effects when cutting the thread. First of all, since the direct bending will cause stress concentration at the bending part, the force transmission is uneven during the thread cutting operation, which makes the cutting edge unevenly stressed in the cutting process, easily leading to uneven thread cutting. This not only affects the appearance quality of the sock product, but also may need to be trimmed twice, reducing the production efficiency. Secondly, due to uneven stress, the scissors will produce unstable shaking during work, especially under long-time and high-frequency operation, the stability of the scissors will deteriorate, which will easily lead to operator fatigue and affect the accuracy and consistency of the cutting.
[0004] With the continuous progress of industrial production technology, people's requirements for product quality and production efficiency are increasing, and this traditional scissors structure has been difficult to meet the production needs. Therefore, an all-in-one machine sewing head scissors is proposed. SUMMARY
[0005] The utility model aims at the deficiency in the prior art, and changes the bending mode under the scissors from the traditional direct bending to the transitional arc bending. The stress can be evenly distributed along the arc curve to avoid stress concentration; the cutting distribution is reasonable, which significantly improves the thread cutting neatness, ensures the product appearance quality, reduces the need for secondary trimming, and improves the production efficiency; at the same time, the scissors and the scissors run along the built-in slot track of the lower cover plate, the motion path is optimized, the thread cutting is more stable and orderly, the unstable shaking is reduced, especially under long-time and high-frequency operation, the scissors can still maintain a good state, reducing the operation difficulty and fatigue of the operator.
[0006] In order to solve the above technical problems, the utility model solves the problems of uneven stress on the cutting edge when cutting the thread by using the direct bending structure of the traditional scissors.
[0007] In order to achieve the above purpose, the utility model adopts the following technical scheme:
[0008] An all-in-one machine sewing head scissors, comprising:
[0009] A base is composed of an upper cover plate and a lower cover plate, and is used for supporting the whole scissor structure, and the lower cover plate is internally provided with built-in notches;
[0010] A lower scissor and an upper scissor are oppositely connected and arranged in the base, and the lower scissor is provided with transition arc bending at both ends and is movably arranged in the built-in notches, so as to ensure uniform stress;
[0011] A spring shaft is arranged in the upper scissor, and a compression spring is arranged around the spring shaft.
[0012] Preferably, the upper cover plate and the lower cover plate are spliced with each other and are fixed by a cylindrical head screw.
[0013] Preferably, the bottom of the upper scissor is arranged in a right-angle bending state, and the spring shaft is connected to the bending part of the upper scissor.
[0014] Preferably, the lower scissor is rotatably connected to the upper scissor by a bolt, and the bolt is externally provided with a matched nut ring for fastening.
[0015] Preferably, the built-in notches are arranged at both sides of the lower cover plate, and the built-in notches at both sides are arranged in different heights to form a track for the transition arc bending of the lower scissor.
[0016] Preferably, the bottom of the upper scissor is provided with a built-in pad for stabilization.
[0017] Preferably, the built-in pad is made of rubber and is uniformly provided with anti-skid lines on the surface.
[0018] Preferably, the bottom of the upper scissor is provided with a bottom groove, and the built-in pad is clamped in the bottom groove.
[0019] Preferably, both ends of the built-in pad are glued with supporting blocks, and the supporting blocks are in contact with the inner side walls of the bottom groove.
[0020] Compared with the prior art, the utility model has the following beneficial effects:
[0021] The integrated machine sewing head scissors provided by the application change the bending mode of the lower scissor from the traditional direct bending to the transition arc bending. The stress is evenly distributed along the arc curve, and stress concentration is avoided. The shear distribution is reasonable, the line cutting uniformity is significantly improved, the product appearance quality is ensured, the secondary trimming demand is reduced, and the production efficiency is improved. At the same time, the lower scissor and the upper scissor run along the track of the built-in notches of the lower cover plate, the movement path is optimized, the line cutting is more stable and orderly, the unstable shaking is reduced, and especially under long-time high-frequency operation, the lower scissor and the upper scissor can still maintain a good state, and the operation difficulty and fatigue of the operator are reduced.
[0022] The application has simple structure, convenient processing and assembly, convenient replacement of parts (such as the lower shear and the upper shear), no need for complex disassembly, reduced maintenance cost and maintenance time, improved maintainability, optimized structure to reduce stress concentration and vibration damage, more reasonable connection of parts, prolonged service life of the equipment, long-term good performance, saved updating cost and time.
[0023] The application has improved shear line neatness and operation stability, reduced defective rate, smoother production process, reduced rework waste, improved production efficiency, higher production efficiency, simple structure for convenient maintenance and part replacement, reduced maintenance cost, improved efficiency, reduced defective rate, and reduced production cost, higher economic benefit for the factory, and enhanced market competitiveness of the product.
[0024] The rubber bottom pad provided at the bottom of the upper shear and the support blocks glued at both ends of the rubber bottom pad play a buffering role when stressed, can effectively absorb the impact force from the external driving device (such as a pneumatic cylinder), and reduce the transmission of vibration in the equipment. The anti-slip pattern on the surface of the rubber bottom pad further increases the friction, enhances the stability, makes the entire shear line process more smooth and stable, and improves the reliability of the operation. BRIEF DESCRIPTION OF DRAWINGS
[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.
[0026] Figure 1 It is a schematic diagram of the overall structure of the present application;
[0027] Figure 2 It is a schematic diagram of the split structure of the present application;
[0028] Figure 3 It is a schematic diagram of the split overhead structure of the present application;
[0029] Figure 4 It is a schematic diagram of the overhead partial structure of the present application;
[0030] Figure 5 It is a schematic diagram of the overhead split partial structure of the present application;
[0031] Figure 6 It is a schematic diagram of the front view structure of the lower cover plate of the present application;
[0032] Figure 7 It is a schematic diagram of the front view structure of the lower shear of the present application;
[0033] Figure 8 It is a front view structural schematic diagram of the scissors.
[0034] Figure number explanation: 1, upper cover plate; 2, cylindrical head screw; 3, scissors lower; 301, transition arc bending; 4, scissors upper; 5, bolt; 6, spring mandrel; 7, compression spring; 8, nut ring; 9, lower cover plate; 901, built-in notch; 902, bottom groove; 903, bottom pad; 904, support block. DETAILED DESCRIPTION
[0035] The utility model will be described in further detail below in combination with the drawings.
[0036] The following description is used to disclose the utility model so that those skilled in the art can implement the utility model. The preferred embodiments in the following description are only as examples, and other obvious modifications can be thought of by those skilled in the art. The basic principles of the utility model defined in the following description can be used in other implementation schemes, modification schemes, improvement schemes, equivalent schemes and other technical schemes without departing from the spirit and scope of the utility model.
[0037] Those skilled in the art should understand that, in the disclosure of the utility model, the orientation or position indicated by the terms "longitudinal", "transverse", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, which is only for the simplified description of the utility model for the convenience of description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore the above-mentioned terms cannot be understood as a limitation on the utility model.
[0038] It can be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of one element can be one, and in another embodiment, the number of the element can be multiple, and the term "one" cannot be understood as a limitation on the number. EMBODIMENT
[0039] Please refer to Figures 1-8 , a one-body machine sewing head scissors, comprising: base, which is composed of upper cover plate 1 and lower cover plate 9, for supporting the whole scissors structure, the lower cover plate 9 is internally provided with built-in notch 901;
[0040] Scissors lower 3 and scissors upper 4, which are relatively rotatably connected and are arranged in the base, the scissors lower 3 is provided with transition arc bending 301 at both ends, and the transition arc bending 301 is movably arranged inside the matching built-in notch 901, to ensure uniform stress;
[0041] A spring mandrel 6 is mounted on the upper scissor 4, and a compression spring 7 is wound around the spring mandrel 6.
[0042] The one-piece head-sewing scissor of the present application mainly comprises an upper cover plate 1, a cylinder head screw 2, a lower scissor 3, an upper scissor 4, a spring mandrel 6, and a compression spring 7. The following is a detailed description of the working principle thereof:
[0043] I. Component assembly
[0044] First, the upper cover plate 1 and the lower cover plate 9 are spliced, and the cylinder head screw 2 is used to fix them together to form the base of the scissor. The lower cover plate 9 has a built-in notch 901 pre-formed inside, and the built-in notch 901 is formed on both sides inside it. The built-in notches 901 on both sides are of different heights, forming a specific track. This structure design provides guidance and constraint for the subsequent movement of the scissor.
[0045] The selection of the cylinder head screw 2 should be based on the thickness and strength requirements of the base to ensure that its length and diameter are appropriate, and it can firmly connect the upper cover plate 1 and the lower cover plate 9 together to avoid loosening during use.
[0046] The lower scissor 3 and the upper scissor 4 are connected by relative rotation to enable them to open and close to each other to achieve the cutting function. The lower scissor 3 is provided with a transition circular arc bend 301 at both ends. When installing, the lower scissor 3 is placed in the lower cover plate 9, and the transition circular arc bend 301 is matched with the built-in notch 901 to ensure that the transition circular arc bend 301 can move freely in the built-in notch 901.
[0047] The bottom of the upper scissor 4 is constructed in a right-angle bent state, and the spring mandrel 6 is installed at the bent part, and the compression spring 7 is wound around the spring mandrel 6. The installation of the spring mandrel 6 needs to ensure that it is firmly connected with the upper scissor 4. Interference fit, key connection or pin connection can be used to ensure that there is no axial or radial movement in subsequent use.
[0048] The selection of the compression spring 7 should be based on the required spring size and stroke to ensure that it can provide sufficient spring force to enable the scissor to reset smoothly after cutting.
[0049] The bolt 5 is used to connect the lower scissor 3 relative to the upper scissor 4 in rotation, and the nut ring 8 matched with the bolt 5 is sleeved outside, and the nut ring 8 is tightened to fasten the connection part, ensuring the reliability and stability of the rotational connection of the lower scissor 3 and the upper scissor 4. The nut ring 8 should be tightened to the appropriate torque to prevent the bolt from rotating too tightly or too loosely.
[0050] The bottom pad 903 is made of rubber, and its two ends are fixed with the support blocks 904 by means of adhesion, so that the support blocks 904 are in contact with the inner side walls of the bottom groove 902. The surface of the bottom pad 903 is uniformly provided with anti-skid lines, and the size of the bottom pad 903 is matched with the bottom groove 902, so that the bottom pad 903 can be tightly clamped. In the installation process, the support blocks 904 are tightly fitted with the inner side walls of the bottom groove 902, so as to ensure the stability of the bottom pad 903.
[0051] II. Working principle
[0052] Initially, the lower scissors 3 and the upper scissors 4 are in an open state, and the compression spring 7 is in an uncompressed state or only slightly compressed, thereby keeping the scissors open. The operator places the toe thread of the sock to be cut in the opening area of the lower scissors 3 and the upper scissors 4.
[0053] When the thread cutting operation is started, the lower scissors 3 or the upper scissors 4 can be pushed by an external driving device such as a pneumatic cylinder. The lower scissors 3 and the upper scissors 4 move along the trajectory formed by the built-in groove 901 in the lower cover plate 9. Due to the uneven height of the built-in groove 901, the lower scissors 3 and the upper scissors 4 gradually close during movement.
[0054] During this process, the transition arc bends 301 at both ends of the lower scissors 3 and the upper scissors 4 slide in the uneven built-in groove 901, driving the scissors to close. When the scissors reach a certain position in the built-in groove 901, the scissors are completely closed, and the toe thread in the opening area can be cut off at this time.
[0055] The bending of the transition arc bends 301 adopts a circular arc transition, which uniformly distributes the stress along the circular arc curve, avoiding the stress concentration phenomenon caused by the traditional direct bending method. This makes the force on the lower scissors 3 and the upper scissors 4 uniform during thread cutting, and the shear force distribution of the scissors is more reasonable, thereby ensuring the neatness of the thread cutting and avoiding the problem of uneven thread cutting.
[0056] When the thread cutting is completed, the external driving device such as the pneumatic cylinder is withdrawn. Under the action of the elastic force of the compression spring 7, the lower scissors 3 and the upper scissors 4 move reversely along the trajectory of the built-in groove 901, and return to the initial open position, completing a cycle of thread cutting operation.
[0057] Due to the above-mentioned structure design, the force on the scissors during work is more uniform, so the stability is greatly improved, and the shaking is reduced. The right-angle bending structure at the bottom of the upper scissors 4 cooperates with the spring core shaft 6, the compression spring 7, and the built-in groove 901 in the lower cover plate 9, etc., to ensure the stability of the movement trajectory of the scissors during shearing, and to ensure the accuracy and consistency of shearing.
[0058] Among them, the bottom pad 903 at the bottom of the scissors 4 is made of rubber material, which can play a buffering role when stressed, can absorb part of the impact force when the external driving device drives the scissors, reduces the transmission of vibration, and makes the operation more stable and smooth. At the same time, the anti-skid lines on the surface of the bottom pad 903 and the supporting blocks 904 at both ends can increase the friction with other components, further enhance the stability, prevent sliding during operation, and help improve work efficiency and product quality.
[0059] It will be understood by those skilled in the art that the embodiments of the present application shown in the above description and drawings are only examples and do not limit the present application. The purpose of the present application has been completely and effectively realized. The function and structural principle of the present application have been shown and explained in the embodiments, and the embodiments of the present application can be any deformation or modification without departing from the principle.
Claims
1. An integrated machine head trimming scissors, characterized in that, Include: Base, which is composed of upper cover plate (1) and lower cover plate (9), is used to support the whole scissors structure, the inside of the lower cover plate (9) is provided with built-in notch (901); Scissors down (3) and scissors up (4), both relative rotation connection and set in the base, the scissors down (3) both ends are provided with transition arc bending (301), and the transition arc bending (301) is moved in the inside of the matching built-in notch (901), to ensure uniform stress; Spring shaft (6) and compression spring (7), the spring shaft (6) is installed on the scissors up (4), the compression spring (7) is surrounded on the spring shaft (6).
2. The one-piece machine head-sewing scissors of claim 1, wherein: The upper cover plate (1) and the lower cover plate (9) are spliced with each other and fixed by the cylinder head screw (2).
3. The one-piece machine head-sewing scissors of claim 1, wherein: The bottom of the scissors up (4) is constructed as a right angle bending state, the spring shaft (6) is connected to the bending part of the scissors up (4).
4. The one-piece machine head-sewing scissors of claim 1, wherein: The scissors down (3) is connected to the scissors up (4) by the bolt (5), the bolt (5) is provided with the matching nut ring (8) outside to fasten.
5. The one-piece machine head-sewing scissors of claim 1, wherein: The built-in notch (901) is provided in the inside of the lower cover plate (9) on both sides, the built-in notch (901) on both sides is not equal in height to form a track to move the transition arc bending (301) of the scissors down (3).
6. The one-piece machine head-sewing scissors of claim 1, wherein: The bottom of the scissors up (4) is provided with the bottom pad (903) to stabilize.
7. The one-piece machine head scissors of claim 6, wherein: The bottom pad (903) is designed of rubber material, and the surface is uniformly distributed with anti-skid lines.
8. The one-piece machine head scissors of claim 6, wherein: The bottom of the scissors up (4) is provided with the bottom groove (902), and the bottom pad (903) is clamped in the inside of the bottom groove (902).
9. The one-piece machine head scissors of claim 6, wherein: The both ends of the bottom pad (903) are glued with the supporting block (904), and the supporting block (904) is in contact with the inner side wall of the bottom groove (902).