Cloth clamping device and quilting machine

Abstract

The present invention relates to a cloth clamping device and a quilting machine, wherein the cloth clamping device comprises a long strip-shaped clamp and an expansion piece, wherein the clamp comprises a fixed mounting portion and a movable clamping portion, the movable clamping portion is movably connected to the fixed mounting portion through a connecting portion, the movable clamping portion and the fixed mounting portion form a long strip-shaped clamping opening on one side of the connecting portion, and surround an expansion cavity on the other side of the connecting portion, the clamping opening is used for clamping materials; the expansion piece is arranged in the expansion cavity, the expansion piece is used to expand and drive the clamping opening to close when the internal pressure increases; the cloth clamping device can not only evenly and flatly tension the material, not only can realize precise clamping, clamping to the edge, and sewing to the edge, but also has the characteristics of simple operation, high efficiency, low cost, etc., and is particularly suitable for occasions requiring efficient tensioning of materials.

Description

Technical Field

[0001] The invention relates to the technical field of sewing equipment, and in particular to a cloth clamping device and a quilting machine. Background Art

[0002] Quilting machine (sewing machine) is a commonly used textile equipment. Because it can automatically and quickly sew a variety of materials and patterns under the precise control of its computer system, it is widely used in the sewing production of various quilts, bedspreads, sleeping bags, mattresses, textile decorations, etc.

[0003] Taking the existing quilting machine as an example, in the sewing production process of the quilting machine, the material (or cloth) needs to be tensioned and fixed on the material frame first, and then the quilting machine can be used for sewing; and in order to tension and fix the material on the material frame, a row of cloth clips are usually provided at the edge of the existing material frame, and the number of cloth clips ranges from a few to dozens. When the material needs to be tensioned, each cloth clip needs to be manually clamped on the material so as to use the cloth clip to tension the material. However, when the material is tensioned in this way, the cloth clip can only clamp a small local area of ​​the material. When one side of the material needs to be tensioned, Not only does it require a lot of cloth clips to cooperate, but it also requires manual operation to clamp each cloth clip to the material one by one, which makes the operation cumbersome, time-consuming, and inefficient, and requires a large number of cloth clips and high labor costs. When multiple cloth clips are used to tension the material, the tensioning force at the cloth clip is different from the tensioning force between two adjacent cloth clips, so that the material between two adjacent cloth clips is usually in a relatively loose state. On the one hand, it causes uneven distribution of the tensioning force of the material, and on the other hand, it causes the tensioned material to be uneven, so that the quilting machine cannot sew to a position close to the cloth clip (that is, it cannot sew to the edge), which needs to be solved urgently. Summary of the invention

[0004] The purpose of the present invention is to solve the problems in existing sewing operations, when multiple cloth clamps are used to tension materials, there is uneven distribution of tensioning force, uneven materials after tensioning, resulting in many cloth clamps required, troublesome operation, long time consumption, low efficiency, high cost and inability to sew to the edge, etc., and provide a cloth clamp device with a compact structure, which can not only tension materials evenly and flatly, but also facilitate accurate clamping and clamping to the edge, and has the characteristics of simple operation, high efficiency and low cost, etc. The main concept is:

[0005] A cloth clamping device comprises a strip-shaped clamp and an expansion member, wherein:

[0006] The clamp comprises a fixed installation part and a movable clamping part, wherein the movable clamping part is rotatably connected to the fixed installation part through a connecting part, the movable clamping part and the fixed installation part form a strip-shaped clamping opening on one side of the connecting part, and an expansion cavity is formed on the other side of the connecting part, and the clamping opening is used to clamp the material;

[0007] The expansion member is arranged in the expansion cavity, and the expansion member is used to expand and drive the clamping opening to close when the internal pressure increases. In this scheme, the clamp is constructed in a strip shape, and a strip-shaped clamping opening is constructed on one side of the clamp, which can not only clamp and compress one edge of the material as a whole along the set direction, solving the problem of flat and efficient tensioning of the material, but also clamp to the edge of the material, solving the problem of clamping to the edge and sewing to the edge; by connecting the movable clamping part to the fixed mounting part in a deflectable manner, and arranging an expansion member between the movable clamping part and the fixed mounting part, and the expansion member and the clamping opening are respectively located on both sides of the connection part, so that in actual use, the expansion member can expand evenly when the internal pressure increases, so as to evenly squeeze the movable clamping part and the fixed mounting part along the clamping direction. The mounting part, on the one hand, can make the movable clamping part rotate under the action of the lever principle and drive the clamping mouth to close, thereby solving the problem of clamping materials by expanding with internal pressure; on the other hand, because the expansion part can expand evenly under the action of the internal pressure, it can evenly squeeze the movable clamping part and the fixed mounting part, so that the clamping force is evenly distributed along the length direction of the clamping mouth, which can effectively solve the problem of evenly clamping materials; compared with the prior art, the cloth clamping device also has the characteristics of simple operation, high efficiency and low cost. It can not only realize precise clamping, but also clamp and sew to the edge, and is particularly suitable for occasions that require efficient tensioning of materials.

[0008] To facilitate the molding of the expansion cavity, preferably, the expansion cavity is a strip-shaped inner cavity that runs through both ends of the clamp.

[0009] In order to solve the problem of adapting the expansion member and evenly applying force, further, the fixed installation part is configured with a first notch adapted to the expansion member, and the movable clamping part is configured with a second notch adapted to the expansion member, the second notch corresponds to the first notch, and the first notch and the second notch together surround the expansion cavity. This is more conducive to adapting the expansion member, thereby facilitating a more even distribution of the force between the expansion member and the fixed installation part and the movable clamping part.

[0010] To solve the problem of expansion under the action of internal pressure, preferably, the expansion member is an air bag or an inflatable tube. Both the air bag and the inflatable tube can expand under the action of internal pressure to drive the clamping opening to close, so as to achieve the purpose of firmly clamping the material.

[0011] In order to solve the problem of stably and securely clamping the material, further, one side of the fixed mounting portion is configured with a first clamping head protruding upward, and one side of the movable clamping portion is configured with a second clamping head protruding downward, the second clamping head corresponds to the first clamping head, and forms the clamping opening. The cooperation between the first clamping head and the second clamping head is more conducive to clamping the material, and is conducive to more stable and secure tensioning of the material.

[0012] In order to solve the molding problem of the first clamping head and the second clamping head, preferably, the first clamping head is a boss constructed on the fixed installation part, or the end of one side of the fixed installation part is bent upward to form the first clamping head;

[0013] And / or, the second clamping head is a boss constructed on the movable clamping part, or, the end of one side of the movable clamping part is bent downward to form the second clamping head. The first clamping head and the second clamping head can be quickly formed by setting the boss and bending.

[0014] In order to further solve the problem of sewing to the edge, the movable clamping part located at one side of the clamping opening is bent downward to form a clearance gap. In this solution, by constructing the clearance gap, the clearance gap is used to make way for the head of the quilting machine, thereby preventing the head of the quilting machine from interfering with the movable clamping part, thereby effectively solving the problem of sewing to the edge.

[0015] In order to solve the problem of installation and fixing of the clamp, further, the fixed installation part is configured with a plurality of installation holes. By providing the installation holes, the installation and fixing of the fixed installation part can be conveniently realized.

[0016] In order to solve the problem of easy installation and removal of the clamp, the movable clamping part is further configured with a plurality of operating holes, each of which corresponds to each of the mounting holes, so that the staff can insert fasteners such as bolts into the mounting holes through the operating holes, thereby facilitating the installation and removal of the fixed mounting part, which is very convenient.

[0017] In order to solve the problem of efficiently inserting the material into the clamping opening, further, at least one end of the clamping opening is configured with an eight-shaped opening, so as to increase the spacing at the ends of the clamping opening, so that the material can be inserted into the clamping opening more conveniently and efficiently.

[0018] In order to solve the problem that the movable clamping part can be deflected relative to the fixed mounting part under the extrusion of the expansion part, in the scheme one, the connecting part is a connecting plate, and the connecting plate is distributed along the length direction of the fixed mounting part, and the movable clamping part is deflected relative to the fixed mounting part through the elastic deformation of the connecting part. In this scheme, the movable clamping part and the fixed mounting part are connected as a whole through the connecting plate, and the connecting plate has a set height and thickness, so that the connecting plate can be elastically deformed under the action of external force, so that the expansion of the expansion part can be used to drive the movable clamping part to rotate relative to the fixed mounting part, so as to drive the clamping mouth to close, which can not only realize the movable connection of the movable clamping part, but also achieve the purpose of clamping the material; when the clamping is completed and the expansion part is depressurized, since the connecting plate itself can automatically return to the initial state, it can synchronously drive the clamping mouth to open, so as to achieve the purpose of automatic resetting.

[0019] In order to solve the problem of low-cost molding, further, the clamp is an integrally molded component, which not only facilitates the rapid molding of the clamp, but also can effectively reduce costs and increase service life.

[0020] Furthermore, the clamp is an integrally formed aluminum profile.

[0021] In order to solve the problem that the movable clamping part can deflect relative to the fixed installation part under the pressure of the expansion member, in the second solution, the connecting part is a hinge structure, and the movable clamping part is hinged to the fixed installation part through the hinge structure. By constructing the connecting part as a hinge structure, the movable clamping part and the fixed installation part can be hinged, solving the problem of movable connection.

[0022] In order to solve the problem of automatically opening the clamping opening, the invention further includes an elastic component, which is installed between the movable clamping part and the fixed installation part and is used to drive the clamping opening to open. By providing the elastic component, after the internal pressure of the expansion member is reduced, the elasticity of the elastic component can be used to drive the movable clamping part to rotate relative to the fixed installation part, so as to automatically open the clamping opening and achieve the purpose of automatic resetting.

[0023] Preferably, the elastic component is a compression spring, and the compression spring is arranged between the connecting portion and the clamping opening;

[0024] And / or, the elastic component is a tension spring, and the tension spring and the expansion member are respectively arranged on the same side of the connecting portion.

[0025] In order to solve the problem of adjusting the internal pressure of the expansion member, a pressure regulator is further included, which is connected to the expansion member and is used to adjust the internal pressure of the expansion member. By setting the pressure regulator, the internal pressure of the expansion member can be effectively adjusted so as to close or open the clamping port according to actual needs.

[0026] Preferably, the pressure regulator is an inflatable air cylinder, an air pressure pump, a water pump or a hydraulic pump, so as to utilize air pressure or hydraulic pressure to drive the clamping opening to close.

[0027] In order to solve the problem of blocking the expansion cavity at the end of the clamp, further, it also includes an end head, which is fixed to the fixed installation part, and there is a gap between the end head and the end of the movable clamping part. By constructing the end head, the problem of shielding and sealing the end of the expansion cavity can be achieved, and by constructing the gap, the end head will not hinder the movable clamping part from rotating relative to the fixed installation part.

[0028] In order to solve the problem of forming the gap, preferably, the length of the movable clamping portion is smaller than the length of the fixed installation portion, so as to form the gap.

[0029] In order to solve the problem of detachable installation of the end head, further, at least the end of the fixed installation part is configured with a threaded hole, the end head is configured with a connecting hole adapted to the threaded hole, and the end head is fixed to the end of the fixed installation part by a bolt. By configuring the threaded hole and the connecting hole, the threaded hole can be connected by a bolt, thereby achieving the purpose of detachable installation of the end head.

[0030] In order to solve the problem of connecting the voltage regulator from the end of the fixed installation part, further, the end structure has a first joint for connecting the voltage regulator and a second joint for connecting the expansion piece, the first joint is connected to the second joint, and the end of the expansion piece is fixed to the second joint.

[0031] Furthermore, a gas nozzle is installed at the first joint; and / or two ends of the expansion member are respectively connected to the ends of the fixed installation part.

[0032] A quilting machine comprises the cloth clamping device, wherein the fixed installation part is fixedly installed on a frame or a material frame.

[0033] Compared with the prior art, the cloth clamping device and quilting machine provided by the present invention can not only tension the material evenly and smoothly, but also achieve precise clamping, clamping to the edge, and sewing to the edge, and has the characteristics of simple operation, high efficiency, and low cost. It is particularly suitable for occasions that require efficient tensioning of materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0035] Figure 1 This is one of the structural schematic diagrams of a clamp in a cloth clamping device provided in Example 1 of the present invention.

[0036] Figure 2 This is a second schematic diagram of the structure of a clamp in a cloth clamping device provided in Example 1 of the present invention.

[0037] Figure 3 for Figure 1 main view.

[0038] Figure 4 This is a front view of another clamp in a cloth clamping device provided in Example 1 of the present invention.

[0039] Figure 5 This is a schematic structural diagram of a cloth clamping device provided in Example 1 of the present invention.

[0040] Figure 6 for Figure 5 AA view of the .

[0041] Figure 7 This is a schematic diagram of a cloth clamping device provided in Example 1 of the present invention when clamping a material.

[0042] Figure 8 This is a front view of a clamp in a cloth clamping device provided in Example 3 of the present invention.

[0043] Fig. 9 This is a front view of another clamp in a cloth clamping device provided in Example 3 of the present invention.

[0044] Fig.10 This is a schematic diagram of the partial structure of a clamp in a cloth clamping device provided in Example 4 of the present invention.

[0045] Fig.11 for Fig.10 main view.

[0046] Fig.12 This is one of the structural schematic diagrams of an end in a cloth clamping device provided in Example 4 of the present invention.

[0047] Fig.13 This is a second schematic diagram of the structure of an end of a cloth clamping device provided in Example 4 of the present invention.

[0048] Fig.14 This is a partial schematic diagram of a cloth clamping device provided in Example 4 of the present invention, after the expansion member is connected to the end head.

[0049] Fig.15 This is a schematic structural diagram of a cloth clamping device provided in Example 4 of the present invention.

[0050] Fig.16 It is a partial side view of a cloth clamping device provided in Example 4 of the present invention.

[0051] Fig.17 This is a partial schematic diagram of the end of a clamp in a cloth clamping device provided in Example 1 of the present invention.

[0052] Description of symbols in the figure

[0053] Clamp 100, fixed mounting portion 101, movable clamping portion 102, expansion cavity 103, first notch 104, second notch 105, clamping opening 106, first clamping head 107, second clamping head 108, boss 109, clearance notch 110, mounting hole 111, operating hole 112, through hole 113, threaded hole 114, figure eight opening 115

[0054] Connecting plate 200

[0055] Expansion piece 300

[0056] Pressure regulator 400, pipeline 401

[0057] Hinge structure 500, hinge column 501, hinge hole 502

[0058] Compression spring 601, tension spring 602

[0059] End 700, connection hole 701, first joint 702, second joint 703, air nozzle 704, gap 705

[0060] Material 800. DETAILED DESCRIPTION

[0061] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The components of the embodiments of the present invention generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present invention.

[0062] Example 1

[0063] This embodiment provides a cloth clamping device, including a strip-shaped clamp 100 and an expansion member 300, wherein the clamp 100 includes a fixed installation portion 101 and a movable clamping portion 102. Figure 1-Figure 7 As shown, the fixed mounting portion 101 is strip-shaped (that is, the strip-shaped means that the length dimension of the fixed mounting portion 101 is greater than or much greater than the width dimension and the height dimension of the fixed mounting portion 101, and does not limit the cross-sectional shape of the fixed mounting portion 101), and the movable clamping portion 102 is also strip-shaped (that is, the strip-shaped means that the length dimension of the movable clamping portion 102 is greater than or much greater than the width dimension and the height dimension of the movable clamping portion 102, and does not limit the cross-sectional shape of the movable clamping portion 102), and the movable clamping portion 102 is connected to the fixed mounting portion 101 through a connecting portion, and the movable clamping portion 102 and the fixed mounting portion 101 form a strip-shaped clamping opening 106 on one side of the connecting portion, as shown in FIG. Figure 1 and Figure 2 As shown, the clamping opening 106 is used to clamp the material 800. Figure 6At the same time, the movable clamping portion 102 and the fixed mounting portion 101 form an expansion cavity 103 on the other side of the connecting portion, as shown Figure 3 and Figure 6 As shown, the expansion member 300 is arranged in the expansion cavity 103. The expansion member 300 can expand evenly when the internal pressure increases, and squeeze the movable clamping part 102 and the fixed installation part 101 along the length direction of the clamping mouth, so that the movable clamping part 102 can deflect or rotate under the action of the lever principle, thereby driving the clamping mouth 106 to close, so as to achieve the purpose of flat clamping the material, and the clamping force on the material is evenly distributed along the length direction of the clamping mouth 106.

[0064] In this embodiment, the length of the clamping opening 106 is determined by the length of the clamp 100, and the length of the clamp 100 can be determined according to actual needs, such as Figure 1 As shown, in order to meet the clamping requirements of materials of different lengths.

[0065] Since the clamp 100 in the cloth clamping device uses the lever principle to clamp and release the material 800, the connecting portion has multiple implementation modes. For example, in this embodiment, the connecting portion adopts a connecting plate 200, that is, the connecting portion adopts a plate-like structure, such as Figure 1-Figure 3 As shown, the connecting plates 200 are distributed along the length direction of the clamp 100, as shown Figure 3 As shown, specifically, the fixed mounting portion 101 and the movable clamping portion 102 are connected only by a connecting plate 200, and the connecting plate 200 has a set height and thickness, so that the connecting plate 200 has a certain elastic deformation ability. Under the extrusion of the expansion member 300, the movable clamping portion 102 can be driven to deflect (rotate) relative to the fixed mounting portion 101, so that the clamping port 106 on the other side can be closed, which not only realizes the deflectable connection of the movable clamping portion 102, but also achieves the purpose of clamping the material; when the clamping is completed and the expansion member 300 is depressurized, the connecting plate 200 itself can automatically restore to the initial state (because elastic deformation occurs), and simultaneously drives the clamping port 106 to open, so as to achieve the purpose of automatic resetting, so as to carry out the next clamping operation.

[0066] In this embodiment, the movable clamping portion 102 is directly opposite to the fixed installation portion 101. Figure 1-Figure 3 As shown, in a preferred embodiment, the connecting plate 200 can be vertically connected to the fixed installation portion 101 and the movable clamping portion 102 respectively.

[0067] The shape of the expansion cavity 103 can be determined according to actual needs, as long as it can simultaneously squeeze the fixed installation portion 101 and the movable clamping portion 102 when expanding. In a preferred embodiment, the expansion cavity 103 can preferably be a strip-shaped inner cavity that runs through both ends of the clamp 100, such as Figure 1 and Figure 2 As shown; the expansion member 300 can be arranged in a local area of ​​the expansion cavity 103, for example, it can be arranged only at positions close to the two ends of the clamp 100, and the expansion member 300 can also fill the entire expansion cavity 103; the expansion member 300 can be an air bag, an inflation tube, or other components that can be expanded under the action of internal pressure. As an example, in this embodiment, the expansion member 300 is an inflation tube, which is made of rubber material. The inflation tube is arranged in the expansion cavity 103 and distributed along the length of the expansion cavity 103.

[0068] In order to make the expansion cavity 103 more suitable for the inflatable tube, in a preferred embodiment, the fixed mounting portion 101 is configured with a first notch 104 adapted to the expansion member 300, and the movable clamping portion 102 is configured with a second notch 105 adapted to the expansion member 300, and the second notch 105 corresponds to the first notch 104. Figure 3 and Figure 6 As shown, the first notch 104 and the second notch 105 together enclose the expansion cavity 103; in a more preferred embodiment, the first notch 104 and the second notch 105 can be arc-shaped grooves, so that the first notch 104 and the second notch 105 can enclose the expansion cavity 103 of a cylindrical structure, as shown in FIG. Figure 3 and Figure 6 shown.

[0069] In order to better clamp the material, in this embodiment, one side of the fixed installation portion 101 is configured with a first clamping head 107 protruding upwards, such as Figure 2 and Figure 3 As shown, one side of the movable clamping portion 102 is configured with a second clamping head 108 protruding downward, the second clamping head 108 corresponds to the first clamping head 107, and forms the clamping opening 106. Figure 2 and 3 As shown, when the clamping opening 106 is closed, the upper surface of the first clamping head 107 and the lower surface of the second clamping head 108 are in contact with each other, so as to achieve the purpose of stably clamping the material; the first clamping head 107 has a variety of molding methods. As an example, the first clamping head 107 can be a boss 109 constructed on the fixed mounting portion 101, such as Figure 4 As shown, the boss 109 protrudes upward and is located in the clamping opening 106 to clamp the material; as another example, the end of one side of the fixed mounting portion 101 is bent upward to form the first clamping head 107, such as Figure 3 As shown, at this time, the end surface of one side of the fixed installation portion 101 directly becomes the upper surface of the first clamping head 107 for contacting and clamping the material.

[0070] Similarly, the second clamping head 108 can be formed in a variety of ways. As an example, the second clamping head 108 can be a boss 109 constructed on the movable clamping portion 102, such as Figure 4 As shown, the boss 109 protrudes downward and is located in the clamping opening 106 to clamp the material; as another example, the end of one side of the movable clamping portion 102 is bent downward to form the second clamping head 108, such as Figure 3 As shown, at this time, the end surface of one side of the movable clamping portion 102 directly becomes the lower surface of the second clamping head 108 for contacting and clamping the material.

[0071] In the process of sewing to the edge, in order to prevent the movable clamping part 102 from interfering with the quilting machine head, in a further embodiment, the movable clamping part 102 located on one side of the clamping opening 106 is bent downward to form a clearance gap 110, such as Figure 3 and Figure 6 As shown, the clearance gap 110 can be used to make room for the head of the quilting machine, thereby preventing the head of the quilting machine from interfering with the movable clamping part 102, thereby being more conducive to sewing to the edge.

[0072] To facilitate the installation and fixation of the clamp 100, in a more perfect solution, the fixing and mounting portion 101 is configured with a plurality of mounting holes 111, such as Figure 2 As shown, by providing the mounting hole 111, the fixed mounting portion 101 can be conveniently installed and fixed at a desired position using bolts, such as being installed on a material frame or a quilting machine, etc.; since the fixed mounting portion 101 corresponds to the movable clamping portion 102, as shown in FIG. Figure 3 As shown, in order to facilitate the installation and removal of the clamp 100, in a more perfect solution, the movable clamping portion 102 is configured with a plurality of operating holes 112, and each of the operating holes 112 corresponds to each of the mounting holes 111, as shown in FIG. Figure 1 As shown, the staff can insert fasteners such as bolts into the installation hole 111 through the operation hole 112, thereby facilitating the installation and disassembly of the fixed installation part 101, which is very convenient.

[0073] For ease of installation, further, the lower surface of the fixed installation portion 101 is configured as a plane. Figure 2 and Figure 6 shown.

[0074] In order to facilitate the adjustment of the internal pressure of the expansion member 300, in a more perfect solution, the cloth clamping device further includes a pressure regulator 400, and the pressure regulator 400 is connected to the expansion member 300, such as Figure 5As shown, it is used to adjust the internal pressure of the expansion member 300; as an example, the pressure regulator 400 can be connected to the expansion member 300 through the pipeline 401, so that the internal pressure of the expansion member 300 can be increased by using the pressure regulator 400; the pressure regulator 400 has multiple implementation methods. As an example, the pressure regulator 400 can be an air pressure regulator. At this time, the expansion member 300 is filled with gas. The air pressure regulator can be an inflatable inflator, an air pressure pump, etc. When the air pressure regulator is connected to the expansion member 300 and turned on, gas can be filled into the expansion member 300 to increase the internal pressure of the expansion member 300, so that the expansion member 300 can expand under the action of the internal pressure and achieve a clamping effect; when the air pressure regulator is closed, the internal pressure of the expansion member 300 is reduced, and the clamp 100 can be automatically reset to smoothly release the material. In this way, the cloth clamping device can clamp the material under the action of air pressure;

[0075] As another example, the pressure regulator 400 can be a hydraulic regulator. In this case, the expansion piece 300 is filled with liquid, and the hydraulic regulator can be a water pump, a hydraulic pump (including a gear pump, a vane pump, a plunger pump and a screw pump, etc.); when the hydraulic regulator is connected to the expansion piece 300 and turned on, liquid can be filled into the expansion piece 300 to increase the internal pressure of the expansion piece 300, so that the expansion piece 300 can expand under the action of the internal pressure and achieve a clamping effect; when the hydraulic regulator is closed, the internal pressure of the expansion piece 300 is reduced, and the clamp 100 can be automatically reset to smoothly release the material. In this way, the cloth clamping device can clamp the material under the action of hydraulic pressure.

[0076] In this embodiment, the expansion member 300 may be connected to the voltage regulator 400 at the middle of the fixed installation portion 101, or may be connected to the voltage regulator 400 at the end of the fixed installation portion 101. Figure 5 shown.

[0077] In this embodiment, the fixed installation portion 101 and the movable clamping portion 102 can be respectively in the shape of long strips, and the cross-sectional shapes of the fixed installation portion 101 and the movable clamping portion 102 are not limited. For example, Figure 3 As shown, the fixed installation portion 101 can be a long strip plate, and the movable clamping portion 102 can also be a long strip plate.

[0078] In a more perfect solution, at least one end of the clamping opening 106 is configured with an eight-shaped opening 115, such as Fig.10 and 17 As shown, the spacing at the ends of the clamping opening 106 is increased so that the material can be clamped into the clamping opening 106 more conveniently and efficiently.

[0079] Example 2

[0080] The main difference between the present embodiment 2 and the above-mentioned embodiment 1 is that in the cloth clamping device provided in the present embodiment, the clamp 100 can be an integrally formed component, that is, the fixed installation part 101, the movable clamping part 102 and the connecting part can be an integrally formed component; for example, in a specific implementation, the clamp 100 can be an integrally formed aluminum profile (that is, an aluminum alloy profile), such as Figure 1-Figure 3 As shown, the fixed installation portion 101, the movable clamping portion 102 and the connecting portion are integrally formed aluminum profiles, which not only facilitates the rapid prototyping of the clamp 100, but also can effectively reduce costs and increase service life.

[0081] Example 3

[0082] The main difference between the present embodiment 3 and the above-mentioned embodiment 1 is that in the cloth clamping device provided in the present embodiment, the structure of the connecting part is different. In the present embodiment, the connecting part adopts a hinge structure 500, such as Figure 8 As shown, the movable clamping portion 102 can be hinged to the fixed mounting portion 101 through the hinge structure 500, so as to realize a movable connection (deflectable connection) between the movable clamping portion 102 and the fixed mounting portion 101; in actual use, when the expansion member 300 expands due to the increase of internal pressure, the movable clamping portion 102 can be driven to rotate (deflect) relative to the fixed mounting portion 101, so that the clamping port 106 is closed, thereby achieving the purpose of clamping the material.

[0083] The hinge structure 500 may adopt a hinge structure 500 commonly used in the prior art, for example, Figure 8 As shown, the hinge structure 500 includes a hinge hole 502 and a hinge column 501 matched with the hinge hole 502, and the hinge hole 502 is sleeved on the hinge column 501, so that the hinge hole 502 and the hinge column 501 can form a rotating pair. At this time, in one embodiment, the hinge hole 502 can be respectively constructed on the movable clamping part 102 and the fixed installation part 101, and the hinge hole 502 is sleeved on the hinge column 501, so that the movable clamping part 102 and the fixed installation part 101 can be hinged; in another embodiment, one of the movable clamping part 102 and the fixed installation part 101 is constructed with the hinge hole 502, and the other is constructed with the hinge column 501, and the movable clamping part 102 and the fixed installation part 101 can be hinged through the cooperation of the hinge hole 502 and the hinge column 501.

[0084] It can be understood that the hinge structure 500 can also be a commonly used hinge joint in the prior art, such as a hinge, which can also achieve the hinge effect and will not be described in detail here.

[0085] In order to solve the problem of automatically opening the clamping mouth 106, in a further solution, the cloth clamping device also includes an elastic component, which is installed between the movable clamping part 102 and the fixed mounting part 101, and is used to drive the clamping mouth 106 to open. By setting the elastic component, after the internal pressure of the expansion piece 300 is reduced, the elasticity of the elastic component can be used to drive the movable clamping part 102 to rotate relative to the fixed mounting part 101, so as to automatically open the clamping mouth 106 and achieve the purpose of automatic resetting.

[0086] The elastic component has various implementations. As an example, the elastic component may be a compression spring 601, and the compression spring 601 is disposed between the connecting portion and the clamping opening 106. Fig. 9 As shown, initially, the compression spring 601 is in a compressed state, so that the clamping mouth 106 is in an open state, so that the material 800 can be clamped into the clamping mouth 106; during the closing process of the clamping mouth 106, the compression spring 601 is further compressed and stores elastic potential energy, so that after clamping is completed, the elastic component can automatically release the elastic potential energy to drive the clamping mouth 106 to open, thereby achieving the purpose of automatic resetting.

[0087] As another example, the elastic component may also be a tension spring 602, and the tension spring 602 and the expansion member 300 are respectively arranged on the same side of the connecting portion. Figure 8 As shown, initially, the compression spring 601 is in a stretched state, so that the clamping mouth 106 is in an open state, so that the material 800 can be clamped into the clamping mouth 106; during the closing process of the clamping mouth 106, the tension spring 602 is further stretched and stores elastic potential energy, so that after clamping is completed, the elastic component can automatically release the elastic potential energy to drive the clamping mouth 106 to open, and the purpose of automatic resetting can also be achieved.

[0088] In this embodiment, since the movable clamping portion 102 and the fixed installation portion 101 are two independent components and can be manufactured separately, in a preferred embodiment, the movable clamping portion 102 can be a profile, and the fixed installation portion 101 can also be a profile.

[0089] Example 4

[0090] In order to solve the problem of blocking the end of the clamp 100, the main difference between the present embodiment 4 and the above-mentioned embodiments 1, 2 and 3 is that the cloth clamp device provided in this embodiment further includes an end head 700, which is fixed to the fixed installation part 101 and is used to cover and close the end of the expansion cavity 103. Fig.15 As shown, there is a gap 705 between the end of the end 700 and the end of the movable clamping portion 102, as shown in FIG. Fig.16As shown, the movable clamping portion 102 can rotate relative to the fixed installation portion 101 and the end head 700.

[0091] In a specific implementation, the length of the movable clamping portion 102 (and the connecting plate 200) is smaller than the length of the fixed installation portion 101. Fig.16 As shown, the gap 705 can be formed.

[0092] To achieve detachable installation of the end piece 700, further, at least the end of the fixed installation portion 101 is configured with a threaded hole 114, such as Figure 10-11 As shown, the end head 700 is configured with a connection hole 701 adapted to the threaded hole 114, so that the end head 700 can be fixed to the end of the fixed installation portion 101 by bolts, as shown in FIG. Fig.15 and Fig.16 In a preferred embodiment, especially when the fixture 100 is an integrally formed profile, a through hole 113 is constructed along the length direction of the fixed mounting portion 101 that passes through both ends of the fixed mounting portion 101, such as Fig.10 and Fig.11 As shown, it is only necessary to process a section of internal thread at both ends of the through hole 113 to form the threaded hole 114 so as to fit the bolts, so that the end head 700 can be installed on the end of the fixed installation part 101 by using the bolts.

[0093] In this embodiment, the expansion member 300 may be preferably connected to the voltage regulator 400 through the end of the fixed installation portion 101. Specifically, Figure 12-14 As shown, the end 700 is configured with a first connector 702 for connecting to the voltage regulator 400 and a second connector 703 for connecting to the expansion member 300. The first connector 702 is connected to the second connector 703, and the end of the expansion member 300 is fixed to the second connector 703. For example, the first connector is an inner concave connection port, and the second connector is an outer convex connection tube. Fig.13 As shown, during the implementation process, one end of the expansion member 300 can be connected to and fixed to the corresponding end 700, such as Fig.14 As shown, the other end of the expansion member 300 can be in a blocked state so that the internal pressure of the expansion member 300 can be adjusted from one end of the fixed installation portion 101; in addition, the two ends of the expansion member 300 can be connected and fixed to the end heads 700 at both ends of the fixed installation portion 101, as shown in FIG. Fig.15 As shown, the internal pressure of the expansion member 300 can be adjusted from both ends of the fixed installation portion 101, which is beneficial to improving efficiency.

[0094] To facilitate connection of the voltage regulator 400, in a more perfect solution, a gas nozzle 704 is installed at the first joint 702. Figure 13-Figure 16 As shown, the pressure regulator 400 can be connected using the air nozzle 704.

[0095] Example 5

[0096] This embodiment provides a quilting machine, including the cloth clamping device described in any one of Embodiments 1 to 4, wherein the fixed installation portion 101 is fixed to a frame or a material frame installed on the quilting machine so that the cloth clamping device can be used to clamp the material flatly and efficiently.

[0097] The number of the cloth clamping devices can be one, two or more, and each cloth clamping device can clamp and tension one edge of the material respectively.

[0098] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A cloth clamping device, characterized in that: The invention comprises a strip-shaped clamp and an expansion member, wherein the clamp is an integrally formed profile, the clamp comprises a strip-shaped fixed installation portion and a strip-shaped movable clamping portion, the movable clamping portion is rotatably connected to the fixed installation portion through a connecting portion, the connecting portion is a connecting plate, and the connecting plate is distributed along the length direction of the fixed installation portion, and the movable clamping portion is deflected relative to the fixed installation portion through elastic deformation of the connecting portion; The movable clamping part and the fixed installation part form a strip-shaped clamping opening on one side of the connecting part, one side of the fixed installation part is configured with a first clamping head protruding upward, and one side of the movable clamping part is configured with a second clamping head protruding downward, the second clamping head corresponds to the first clamping head and forms the clamping opening, and the clamping opening is used to clamp the material; The movable clamping part and the fixed installation part form an expansion cavity on the other side of the connecting part, the fixed installation part is configured with a first notch adapted to the expansion member, the movable clamping part is configured with a second notch adapted to the expansion member, the second notch corresponds to the first notch, and the first notch and the second notch together form the expansion cavity, and the expansion cavity is a strip-shaped inner cavity running through both ends of the clamp; The expansion member is an inflatable tube, which is arranged in the expansion cavity and distributed along the length of the expansion cavity. The expansion member is used to expand evenly when the internal pressure increases, and evenly squeeze the movable clamping part and the fixed installation part along the length direction of the clamping mouth to drive the clamping mouth to close.

2. The cloth clamping device according to claim 1, characterized in that: The end portion of one side of the fixed installation portion is bent upward to form the first clamping head; And / or, an end portion of one side of the movable clamping portion is bent downward to form the second clamping head.

3. The cloth clamping device according to claim 1, characterized in that: The movable clamping part located at one side of the clamping opening is bent downward to form a clearance gap; And / or, the fixed installation portion is configured with a plurality of installation holes; And / or, two ends of the clamping opening are respectively constructed with figure eight openings.

4. The cloth clamping device according to any one of claims 1 to 3, characterized in that: Also included is a pressure regulator, the pressure regulator is in communication with the expansion member and is used to adjust the internal pressure of the expansion member; The pressure regulator is an air inflation cylinder, an air pressure pump, a water pump or a hydraulic pump.

5. The cloth clamping device according to any one of claims 1 to 3, characterized in that: It also includes an end head, which is fixed to the fixed installation part, and there is a gap between the end head and the end of the movable clamping part.

6. The cloth clamping device according to claim 5, characterized in that: At least one end of the fixed installation portion is configured with a threaded hole, and the end head is configured with a connecting hole adapted to the threaded hole, and the end head is fixed to the end of the fixed installation portion by a bolt; And / or, the end structure has a first joint for connecting to the voltage regulator and a second joint for connecting to the expansion member, the first joint is connected to the second joint, and the end of the expansion member is fixed to the second joint; And / or, a gas nozzle is installed at the first joint; And / or, two ends of the expansion member are respectively connected to the ends of the fixed installation part.

7. A quilting machine, characterized in that: It comprises the cloth clamping device described in any one of claims 1 to 6, wherein the fixed mounting portion is fixedly mounted on a frame or a material frame.

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