Clamping mechanism and clamping frame

Abstract

The utility model relates to a clamping mechanism and a clamping frame, the clamping mechanism comprises a base, the base is in a strip shape, a guide part and a clamping groove are formed in the length direction of the base, and the clamping groove is formed in one side of the guide part and faces the inner side of the base; the sliding part is movably restrained on the guide part; the knob is provided with a hinge part and a clamping plate matched with the clamping groove, and the knob is rotatably connected to the sliding component through the hinge part; when the rotary knob rotates forwards, the clamping plate is screwed into the clamping groove, the fabric is clamped between the clamping plate and the clamping groove, and when the rotary knob rotates backwards, the clamped fabric is unlocked. The clamping mechanism is very convenient, simple and labor-saving to operate, clamping is firmer, the clamping mechanism is not prone to disengagement in the tensioning and sewing process, and the sewing precision can be improved; and the edge sewing is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to sewing equipment technical field, concretely relates to a clamping mechanism and clamping frame. BACKGROUND

[0002] The quilted sewing machine (sewing machine) is a kind of commonly used textile equipment, since quilted sewing machine can automatically and quickly sew multiple materials and patterns under the accurate control of its computer system, so it is widely used in the sewing production of various quilts, bed covers, sleeping bags, mattresses, textile decorations and the like.

[0003] Taking the existing quilted sewing machine as an example, in the sewing production process of quilted sewing machine, first of all, the material (or cloth) needs to be tensioned and fixed on the material frame, and then the sewing work can be carried out by using the quilted sewing machine; in order to tension and fix the material on the material frame, a row of cloth clamps is usually arranged at the edge of the existing material frame, and the number of cloth clamps varies from several to dozens; when the material needs to be tensioned, each cloth clamp needs to be manually clamped on the material so as to tension the material by using the cloth clamp, however, by using such a way to tension the material, on the one hand, the clamping force is not enough, and the material is easy to loosen in the process of tensioning and sewing, which affects the sewing precision, on the other hand, the material cannot be sewn to the edge in the sewing process, in addition, there are problems such as troublesome operation and not labor-saving, which need to be solved urgently. SUMMARY

[0004] The first aspect of the utility model aims to solve the above technical problems, and provides a clamping mechanism which is simple and labor-saving to operate, not only clamps more firmly, but also is not easy to come off in the process of tensioning and sewing, and is more conducive to sewing to the edge, and the main idea is as follows:

[0005] A clamping mechanism, comprising a base, the base is configured in a strip shape, a guide part and a clamping groove are configured along the length direction of the base, the clamping groove is configured on one side of the guide part and faces the inner side of the base; a sliding part, the sliding part is movably constrained to the guide part; and a knob, the knob is configured with a hinge part and a clamping plate matched with the clamping groove, and the knob is rotatably connected to the sliding part through the hinge part; when the knob is rotated forward, the clamping plate is screwed into the clamping groove and clamps the fabric between the clamping plate and the clamping groove, and when the knob is rotated reversely, the clamped fabric is unlocked. In this scheme, the fabric is clamped by the cooperation of the knob and the clamping groove, and the clamping and unlocking functions can be realized only by rotating the knob, which is very convenient, simple and labor-saving to operate, and since the clamped fabric is bent, the clamping is very firm, and the fabric is not easy to come off in the process of tensioning and sewing, which is conducive to improving the sewing precision; in addition, the cooperation of the clamping plate and the clamping groove can be made thinner, lower and smaller, which is more conducive to sewing to the edge.

[0006] Further, the connecting piece comprises a head and a rod connected to the head; the hinge part is a hinge hole; the rod of the connecting piece passes through the hinge hole and is detachably connected to the sliding part, and the knob is limited between the head and the base. Not only the knob can be prevented from falling off, but also the rotatable connection between the knob and the sliding part can be realized.

[0007] Preferably, the rod is provided with external threads, the sliding part is provided with a threaded hole matched with the threads of the rod, and the connecting piece is screwed to the sliding part. The knob is more convenient to install and maintain.

[0008] The second aspect of the utility model aims to improve the stability and smoothness of the knob during rotation, and avoid the problem of jamming during rotation. In some preferred schemes, a sleeve is further included, the outer diameter of the sleeve is less than or equal to the inner diameter of the hinge hole, the sleeve is sleeved on the connecting piece and located in the hinge hole, and the sleeve is clamped between the head of the connecting piece and the base. The knob can rotate relative to the sleeve, and the sleeve can provide higher-precision limiting for the knob, which can greatly reduce or even eliminate the problem of change in the rotation center of the knob, and is more conducive to more accurate cooperation with the clamping groove. In addition, the connecting piece can also lock and unlock the sliding part.

[0009] In some preferred schemes, a sleeve and a gasket are further included, the outer diameter of the sleeve is less than or equal to the inner diameter of the hinge hole, the sleeve is sleeved on the connecting piece and located in the hinge hole, the lower end of the sleeve abuts against the gasket, and the gasket abuts against the base. The connecting piece is used to lock and unlock the sliding part. By configuring the gasket, the sliding part can be unlocked by loosening the connecting piece during actual use, so as to adjust the position of the sliding part and the knob. The sliding part can be locked to the base by tightening the connecting piece, so as to prevent the position of the sliding part from changing. The contact area between the gasket and the base is larger, so that the locked knob is more stable.

[0010] To make it easier to sew to the edge, preferably, the clamping groove is arranged at the edge of one side of the base. This is more conducive to sewing to the edge.

[0011] Preferably, the clamping groove comprises a top and a side connected to the top, the side is connected to the base, and the top and the side extend along the length of the base respectively. This is more conducive to the entry and exit of the fabric, and makes the process of clamping the fabric more smooth.

[0012] Preferably, the clamping plate is arranged on the side surface of the knob; and the clamping plate is in a plate structure. This not only makes it easier to cooperate with the clamping groove through rotation, but also makes the entire clamping plate thinner, which is more conducive to avoiding interference with the sewing machine, thereby making it easier to sew to the edge.

[0013] To improve the versatility and convenience in use, further, a plurality of knobs and a plurality of sliding components are included, each knob is rotatably arranged on each sliding component, and each sliding component is movably constrained to the guide portion. The positions of the knobs can be adjusted according to actual needs, and the use requirements of different occasions can be met, so that the versatility and convenience in use of the clamping mechanism can be effectively improved.

[0014] The third aspect of the utility model solves the problem of more flexible and convenient use, further, the contour of the clamping plate includes an outer contour away from the knob side, the outer contour is configured as a circular arc structure, and the center of the circular arc structure coincides with the center of the hinge portion. Thus, the center of the circular arc structure coincides with the center of rotation of the knob, so that the fabric can be clamped by rotating the knob clockwise or counterclockwise, and the clamping process is simple, convenient and efficient.

[0015] The fourth aspect of the utility model solves the problem that the fabric is easy to fall off from the clamping mechanism when stretching or tensioning the fabric, further, the contour of the clamping plate includes an outer contour away from the knob side, the outer contour is configured as an arc structure, and the center of the arc structure deviates from the center of the hinge portion. By making the center of the arc structure deviate from the center of the hinge portion, the center of the arc structure also deviates from the center of rotation of the knob. The outer contour of the clamping plate is designed eccentrically, so that the gap between the outer contour of the clamping plate and the clamping groove gradually decreases during the rotation of the clamping plate into the clamping groove, so as to gradually clamp the fabric. When pulling the fabric in the direction of the clamping plate, the fabric will be pulled tighter, which can effectively prevent the fabric from falling off due to the loosening of the knob during the process of stretching or tensioning the fabric. In addition, when pulling the fabric in the direction opposite to the direction of the clamping plate, the knob can be automatically unlocked by the fabric, which is very convenient, efficient and labor-saving. The utility model is applied to the quilting machine, and can achieve better and more efficient sewing effect.

[0016] Preferably, the outer contour of the clamping plate is configured as an elliptical arc structure, or the outer contour of the clamping plate is configured as a circular arc structure, and the center of the circular arc structure deviates from the center of the hinge portion. Not only can the eccentric effect be achieved, but also the fabric can be clamped more smoothly and labor-savingly.

[0017] Further, the upper surface of the base is further configured with a receiving groove, the receiving groove is located on the inner side of the clamping groove and communicates with the clamping groove, and is used for accommodating the edge of the fabric. During use, the clamping plate can pass from above the receiving groove, the receiving groove can prevent the knob from rotating and clamping the fabric due to the thickness of the fabric, and the fabric will not be wrinkled due to the rotation of the knob. The utility model can be applied to fabrics of different thicknesses, and can achieve more efficient and reliable clamping effect.

[0018] The utility model discloses fifth aspect solves the problem of further improving the stability and reliability of whole clamping mechanism while sewing to the edge as far as possible, further, the upper surface of base is structured with the inclined plane inclined to the horizontal plane, and the guide portion is structured in the inclined plane, and the rotation center of knob is inclined to the vertical direction, and the clamping groove is structured in the bottom of inclined plane and is arranged to the knob of inclination. Through the inclined plane inclined to the horizontal plane of the upper surface of base, and the clamping groove is structured in the bottom of inclined plane, so that the side of base away from the clamping groove has greater height and thickness, can play the role of structural reinforcement to base, significantly improve the rigidity of base, can improve the stability and reliability of whole clamping mechanism, and also be favorable to making base longer to satisfy more occasion's use demand, through the inclined installation of knob, and the clamping groove is structured in the bottom of inclined plane, so that the knob and clamping groove can form cooperation at lower position, can further guarantee sewing to the edge, and it is not easy to interfere in the sewing process.

[0019] Preferably, the guide portion is a guide groove structured on the upper surface of the base, and the sliding component is a guide block adapted to the guide groove, and the guide block is arranged in the guide groove. Not only the guiding effect is better, but also the structure of the whole base is more compact.

[0020] Preferably, the side surface of the knob is structured with a clamping plate adapted to the clamping groove; or, the side surface of the knob is structured with two clamping plates adapted to the clamping groove, and the two clamping plates are symmetrically arranged. So that in actual use, whether the knob rotates clockwise or counterclockwise, the fabric can be clamped, so that the clamping process is simpler, more convenient and efficient.

[0021] In some schemes, the upper surface of the base is structured with a horizontal plane for supporting the knob, and the horizontal plane contacts and supports the knob. To ensure that the rotation center of the knob is in a vertical state or close to a vertical state.

[0022] Further, the two sides of the guide groove are respectively structured with a boss protruding upward, the bosses are distributed along the length direction of the base, and the upper surfaces of the bosses constitute the horizontal plane. Not only can effectively support the knob and ensure that the rotation center of the knob is in a vertical state, but also can effectively reduce the contact area of the knob and the base, reduce friction, and facilitate smooth movement and rotation of the knob.

[0023] Preferably, the base is made of an integrally formed profile. To ensure the structural strength while reducing the cost.

[0024] Preferably, the knob is further structured with a gripping portion. To facilitate more labor-saving and efficient rotation of the knob.

[0025] Preferably, the base is further structured with a mounting portion, and the mounting portion includes a mounting groove arranged along the length direction of the base. To facilitate the installation and fixation of the clamping mechanism.

[0026] A clamping frame includes a frame and a clamping mechanism mounted on the frame. The clamping mechanism serves to clamp and tension the fabric within the clamping frame.

[0027] Furthermore, the device includes multiple cylinders and four clamping mechanisms arranged in a rectangle. Two adjacent clamping mechanisms are fixedly mounted to the frame, while the other two adjacent clamping mechanisms are connected to the frame via cylinders. The distance between two opposing clamping mechanisms can be adjusted using the cylinders. This allows the size of the rectangle formed by the four clamping mechanisms to be changed via the cylinders, enabling the fabric to be tensioned in two directions and to tension fabrics of different sizes.

[0028] A quilting machine includes the clamping mechanism or the clamping frame.

[0029] Compared with the prior art, the clamping mechanism and clamping frame provided by this utility model are very convenient, simple and labor-saving to operate. They not only clamp more firmly and are not easy to come loose during tensioning and sewing, which helps to improve sewing accuracy, but also makes it easier to sew to the edge. Attached Figure Description

[0030] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the structure of a knob provided in Embodiment 1 of this utility model.

[0032] Figure 2 This is a top view of a clamping mechanism provided in Embodiment 1 of this utility model.

[0033] Figure 3 for Figure 2 A partial sectional view at point AA.

[0034] Figure 4 for Figure 2 A partial sectional view at point BB.

[0035] Figure 5 This is a schematic diagram of the structure of a sliding component provided in Embodiment 1 of this utility model.

[0036] Figure 6 for Figure 2 A partial sectional view of the connecting part.

[0037] Figure 7 forFigure 1 Top view of the knob shown.

[0038] Figure 8 This is a schematic diagram of the fabric being placed behind the clamping mechanism. The knob in the diagram is rotated to a position away from the slot.

[0039] Figure 9 This diagram illustrates how to screw the knob into the slot and clamp the fabric between the plate and the slot.

[0040] Figure 10 This is a top view of a knob provided in Embodiment 2 of this utility model.

[0041] Figure 11 This is a top view of another knob provided in Embodiment 2 of this utility model.

[0042] Figure 12 This is a cross-sectional schematic diagram of a base provided in Embodiment 3 of this utility model.

[0043] Figure 13 This is a schematic diagram of a clamping mechanism provided in Embodiment 3 of this utility model.

[0044] Figure 14 To utilize Figure 13 A schematic diagram of the clamping mechanism described above after clamping the fabric.

[0045] Figure 15 This is a schematic diagram of the structure of a clamping frame provided in Embodiment 4 of this utility model.

[0046] The markings in the diagram are as follows: Clamping mechanism 1; Base 2, Guide groove 21, Slot 22, Top 221, Side 222, Boss 23, Horizontal surface 231, Inclined surface 232, Receiving groove 24, Mounting groove 25; Sliding part 3, Threaded hole 31; Knob 4, Hinge hole 41, Center of hinge part 411, Clamping plate 42, Outer contour 43, Center of outer contour 431, Grip part 44; Connector 5, Head 51, Rod part 52; Sleeve 61, Gasket 62; Frame 7, Cylinder 71, Guide module 72; Fabric 8. Detailed Implementation

[0047] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0048] Example 1

[0049] This embodiment provides a clamping mechanism 1 for holding fabric 8 to tension the fabric 8 and achieve high-precision sewing. In this embodiment, the fabric 8 can be cloth, cotton quilt, down quilt, etc., and can be one, two, or three layers. In this embodiment, the clamping mechanism 1 includes a base 2, a sliding component 3, and a knob 4. The base 2 serves as a support and load-bearing element, and is also the mounting base for other components. In this embodiment, the base 2 is constructed as a long strip (meaning its length is greater than or significantly greater than its width and height). Figure 2 As shown, the length of the base 2 can be determined according to actual needs, and usually needs to be greater than the maximum length or maximum width of the required sewing fabric 8. For example, the length of the base 2 can preferably be 1.5m, 2m, 2.5m, 3m, 3.5m, or 4m, etc. During implementation, the cross-sectional shape of the base 2 can be determined according to actual needs. During implementation, the base 2 can preferably be made of one-piece molded profiles, such as aluminum profiles, steel profiles, etc.

[0050] like Figure 2 As shown, a guide portion and a slot 22 for the knob 4 are constructed along the length of the base 2. The guide portion is designed to fit the sliding member 3, not only constraining the sliding member 3 and preventing it from falling off, but also guiding its movement so that it can move linearly along the guide portion. In practice, the guide portion and the sliding member 3 can have various mating implementations. For example, the guide portion can be a guide groove 21 constructed on the upper surface of the base 2, such as... Figure 2 As shown, more specifically, the guide groove 21 can preferably be constructed as a convex-shaped structure, such as... Figures 2-4 As shown, correspondingly, the sliding component 3 is a guide block whose shape and size are adapted to the guide groove 21, such as... Figure 5As shown, the guide block is disposed within the guide groove 21 and can move linearly along the guide groove 21. Alternatively, the guide portion can be a guide rail, and correspondingly, the sliding component 3 is a slider adapted to the guide rail. The guide portion can also be a guide rod, and correspondingly, the sliding component 3 is a slip ring adapted to the guide rod.

[0051] In this embodiment, the knob 4 is rotatably mounted on the sliding member 3, allowing the knob 4 to move along the length of the base 2 through the cooperation of the sliding member 3 and the guide portion. This allows for adjustment of the knob 4's position as needed. Furthermore, the knob 4 can rotate relative to the sliding member 3 and the base 2 to clamp or loosen the fabric 8. In implementation, existing technology can be used to achieve the rotatable connection between the knob 4 and the sliding member 3. The knob 4 has a hinge portion, and the knob 4 can be rotatably connected to the sliding member 3 through the hinge portion. Various implementation methods exist. For example, the hinge portion can be a hinge shaft constructed on the knob 4. Correspondingly, the sliding member 3 has a through hole, and the hinge shaft can be connected to the through hole via a bearing, achieving the rotatable connection between the knob 4 and the sliding member 3. Alternatively, the hinge portion can be a hinge hole 41 constructed on the knob 4, and the sliding member 3 has a hinge shaft constructed. The hinge shaft can be connected to the hinge hole 41 via a bearing, also achieving the rotatable connection between the knob 4 and the sliding member 3. When the knob 4 is rotatably connected to the sliding member 3 via the hinge, the rotation center of the knob 4 coincides with the center 411 of the hinge, without considering any errors. It can be understood that in this embodiment, the center 411 of the hinge refers to the central axis of the hinge, which will not be elaborated further below.

[0052] In this embodiment, the hinge part uses a hinge hole 41, such as Figure 6 As shown, the clamping mechanism 1 is also equipped with a connector 5, which includes a head 51 and a rod 52 connected to the head 51. In implementation, the rod 52 is preferably a round rod, and the size (e.g., diameter) of the head 51 is larger than the inner diameter of the hinge hole 41, so that the connector 5 can be connected to the sliding component 3 through the hinge hole 41, and the knob 4 is limited and constrained between the head 51 and the base 2. Figure 6 As shown, this not only prevents the knob 4 from falling off, but also allows for a rotatable connection between the knob 4 and the sliding component 3. To facilitate the installation, replacement, and maintenance of the knob 4, in a further embodiment, the rod 52 is provided with external threads. Correspondingly, the sliding component 3 is provided with a threaded hole 31 adapted to the rod 52, allowing the connector 5 to be threadedly connected to the sliding component 3, achieving a detachable connection. Figure 6 As shown. To improve the stability and smoothness of knob 4 during rotation and avoid jamming during operation, a further embodiment also includes a sleeve 61, such as... Figure 6As shown, the outer diameter of the sleeve 61 can be less than or equal to the inner diameter of the hinge hole 41. The sleeve 61 is fitted onto the connector 5 and located within the hinge hole 41. After the connector 5 is connected to the sliding component 3, the sleeve 61 is precisely clamped between the head 51 of the connector 5 and the base 2 or the sliding component 3. Figure 6 As shown, the knob 4 can rotate relative to the sleeve 61. The sleeve 61 provides a more precise limiting function for the knob 4, greatly reducing or even eliminating the problem of the knob 4's rotation center changing, and facilitating a more precise fit with the slot 22. In one embodiment, the lower end of the sleeve 61 may only abut against the sliding member 3. In another embodiment, the lower end of the sleeve 61 abuts against the base 2 or simultaneously against both the sliding member 3 and the base 2. This not only allows for the rotatable installation of the knob 4, but also, after the knob 4 is adjusted to the correct position, tightening the connecting piece 5 locks the sliding member 3 to the base 2, preventing any change in the position of the sliding member 3. Furthermore, in another embodiment, a gasket 62 is also included, such as... Figure 6 As shown, the lower end of the sleeve 61 abuts against the gasket 62, and the gasket 62 abuts against the base 2. The sliding part 3 can be locked to the base 2 by tightening the connector 5, and the sliding part 3 can be unlocked by loosening the connector 5, so as to adjust the position of the sliding part 3 and the knob 4. In this design, the contact area between the gasket 62 and the base 2 is larger, making the knob 4 more stable after locking.

[0053] In this embodiment, the rotation center of the knob 4 can coincide with the vertical direction. Therefore, in one implementation, the upper surface of the base 2 is constructed with a horizontal surface 231 for supporting the knob 4. The horizontal surface 231 can contact and support the knob 4 to ensure that the rotation center of the knob 4 is in a vertical or near-vertical state. It can be understood that the horizontal surface 231 can be the entire upper surface of the base 2, or it can be a part of the upper surface of the base 2, for example, as shown in the figure. Figures 3-9 As shown, upwardly protruding bosses 23 are respectively constructed on both sides of the guide groove 21. The bosses 23 are distributed along the length direction of the base 2, and the upper surface of the bosses 23 forms the horizontal surface 231. This not only effectively supports the knob 4, ensuring that the rotation center of the knob 4 is in a vertical state, but also effectively reduces the contact area between the knob 4 and the base 2, reducing friction and facilitating smoother movement and rotation of the knob 4. In another embodiment, the upper surface of the sliding member 3 can be constructed as a horizontal surface 231 to support the knob 4. The upper surface of the sliding member 3 contacts and supports the knob 4 to ensure that the rotation center of the knob 4 is in a vertical state. In this case, the knob 4 can contact the upper surface of the base 2, such as... Figure 3 and Figure 4 As shown, this is to improve the stability of knob 4. Of course, knob 4 can also be made not to contact the upper surface of base 2.

[0054] Since the knob 4 can be adjusted along the length of the base 2 through the cooperation of the sliding member 3 and the guide, in practice, the slot 22 is constructed on one side of the guide and arranged along the length of the base 2, with the opening of the slot 22 facing the inside of the base 2, as shown below. Figure 2 As shown, this is designed to cooperate with knob 4. On the one hand, when knob 4 is rotated, it can engage with slot 22 and clamp the fabric 8. On the other hand, during the movement of knob 4, slot 22 remains on one side of knob 4, allowing knob 4 and slot 22 to engage and disengage the fabric 8 at any position, thus meeting various usage requirements and significantly improving the versatility of this clamping mechanism 1. In implementation, slot 22 can preferably be constructed at the edge of one side of base 2, such as... Figures 2-4 As shown, this makes it easier to sew to the edge.

[0055] In a preferred embodiment, the slot 22 includes a top 221 and a side portion 222 connected to the top 221. The side portion 222 is connected to the base 2, and the top 221 and the side portion 222 extend along the length of the base 2, such as... Figure 1 and Figure 7 As shown. Accordingly, the knob 4 also has a locking plate 42 that mates with the locking slot 22, as shown. Figure 1 and Figure 7 As shown, when knob 4 is rotated, the locking plate 42 can engage with the locking slot 22, allowing knob 4 to clamp and unlock fabric 8 through the cooperation of the locking plate 42 and the locking slot 22. In use, fabric 8 can be placed in the locking slot 22 first, and then knob 4 can be manually rotated. Rotating knob 4 clockwise clamps fabric 8 between the locking plate 42 and the locking slot 22, achieving the purpose of clamping fabric 8. To unlock, simply rotate knob 4 counterclockwise to unlock the clamped fabric 8.

[0056] It should be noted that in this embodiment, the forward rotation refers to rotating the card plate 42 toward (or close to) the card slot 22, while the reverse rotation refers to rotating in the opposite direction to the forward rotation. Therefore, it can be understood that in this embodiment, the forward rotation includes two cases: rotating in a clockwise direction and rotating in a counterclockwise direction. When the forward rotation is rotating in a clockwise direction, the reverse rotation is rotating in a counterclockwise direction, and when the forward rotation is rotating in a counterclockwise direction, the reverse rotation is rotating in a clockwise direction.

[0057] In implementation, the card plate 42 can preferably be constructed as a plate-like structure, such as... Figure 1 and Figure 7As shown, this makes the entire card plate 42 thinner, which is more conducive to avoiding interference with the sewing machine and thus more conducive to sewing to the edge. In implementation, the card plate 42 is constructed on the side of the knob 4, making it easier to engage with the card slot 22 by rotation. In implementation, the outline of the card plate 42 includes an outer outline 43 on the side opposite to the knob 4. The outer outline 43 is preferably constructed as an arc-shaped structure, and the center of the arc-shaped structure can coincide with the center of the hinge part, such as... Figure 7 As shown, this helps to ensure that the center of the arc-shaped structure coincides with the rotation center of the knob 4, so that after the outer contour 43 of the clamping plate 42 rotates into the slot 22, the gap between the clamping plate 42 and the slot 22 remains unchanged during the rotation process. This design is more suitable for clamping fabrics 8 with a specific thickness range.

[0058] In implementation, the number of locking plates 42 in the knob 4 can be determined according to actual needs. For example, a locking plate 42 that fits the slot 22 can be constructed on the side of the knob 4. In this case, the overall structure of the knob 4 is a non-rotating body structure. The actual shape of the knob 4 can be determined according to actual needs. The distance between the rotation center of the knob 4 and the slot 22 can be preferably greater than the distance between the outer contour 43 of the locking plate 42 and the rotation center of the knob 4 (maximum distance). This allows the knob 4 to rotate arbitrarily relative to the slot 22 without interference when no fabric 8 is placed, making it more flexible and convenient to use.

[0059] As another example, the side of the knob 4 can be constructed with two adapter plates 42 that fit the slots 22. The two adapter plates 42 are arranged opposite to each other so that the knob 4 has two opposite ends, such as... Figure 1 and Figure 7 As shown, in this embodiment, the center 411 of the hinge can be located exactly at the geometric center of the knob 4, that is, the rotation center of the knob 4 coincides with the geometric center of the knob 4; at this time, the two retaining plates 42 at both ends of the knob 4 can be arranged symmetrically, such as... Figure 1 and Figure 7 As shown, this allows the fabric 8 to be clamped regardless of whether the knob 4 is turned clockwise or counterclockwise during actual use, making the clamping process simpler, more convenient, and more efficient.

[0060] In a further embodiment, a receiving groove 24 is also formed in the upper surface of the base 2, such as... Figure 3 , Figure 4 , Figure 8 and Figure 9As shown, the receiving groove 24 is located inside the card slot 22 and is connected to the card slot 22. It is used to receive the edge of the fabric 8. During use, the card plate 42 can pass through the top of the receiving groove 24. The receiving groove 24 can prevent the problem that the knob 4 cannot be turned and the fabric 8 cannot be clamped because the fabric 8 is too thick. It will also prevent the fabric 8 from wrinkling due to the rotation of the knob 4. It can be used for fabrics 8 of different thicknesses and is conducive to achieving a more efficient and reliable clamping effect.

[0061] In a more refined embodiment, the thickness of the knob 4 can be greater than the thickness of the retaining plate 42 to improve the overall rigidity of the knob 4. Simultaneously, in practice, the knob 4 is also constructed with a gripping part 44 for easy handling, allowing for more effortless and efficient rotation of the knob 4. Figure 1 and Figure 7 As shown, for example, the grip portion 44 can be formed by constructing stepped grooves on both sides of the knob 4.

[0062] In implementation, the number of knobs 4 configured on the base 2 can be determined according to actual needs, and can be one, two, three, etc. In a preferred embodiment, the clamping mechanism 1 may include multiple knobs 4 and multiple sliding components 3, such as... Figure 2 As shown, each knob 4 is rotatably mounted on each sliding component 3, and each sliding component 3 is movablely constrained by the guide portion so as to adjust the position of each knob 4 according to actual needs.

[0063] To facilitate the installation and fixation of the base 2, in a more complete embodiment, the base 2 is also constructed with a mounting part, which may be a through hole, a threaded hole 31, a mounting groove 25, etc. Figures 2-4 As shown, in this embodiment, the mounting part is a mounting groove 25 provided along the length direction of the base 2.

[0064] When using this clamping mechanism 1, first turn the knob 4 to disengage the clamping plate 42 from the clamping slot 22. Then, place the fabric 8 on the base 2, covering the clamping slot 22. The edge of the fabric 8 can automatically fall into the receiving slot 24. Figure 8 As shown; then rotate knob 4 so that the clamping plate 42 gradually engages with the clamping slot 22. During this process, the fabric 8 is gradually pressed between the clamping plate 42 and the side 222 of the clamping slot 22, and simultaneously clamped between the clamping plate 42 and the top 221 of the clamping slot 22, as shown. Figure 9As shown. Even for fabrics 8 of varying thicknesses, the fabric 8 can be further clamped between the clamping plate 42 and the receiving groove 24. This clamping method and structure not only better holds the edges of the fabric 8, making sewing easier, but also ensures that the clamped fabric 8 is difficult to detach from the clamping mechanism 1 under the tension perpendicular to the length of the base 2, preventing the fabric 8 from falling off during subsequent tensioning and sewing. In use, simply turning the knob 4 clamps or unlocks the fabric 8, making it very convenient and efficient.

[0065] Example 2

[0066] The main difference between this embodiment 2 and the above embodiment 1 is that the structure of the knob 4 in the clamping mechanism 1 provided in this embodiment is different. Specifically, the structure of the locking plate 42 in the knob 4 is different. In this embodiment, the outer contour 43 of the locking plate 42 is constructed as an arc shape, and the center 431 of the outer contour (the center of the arc shape) is offset from the center of the hinge, so that the center 431 of the outer contour is also offset from the rotation center of the knob 4, as shown in the figure. That is, the outer contour 43 of the locking plate 42 adopts an eccentric design, so that the gap between the outer contour 43 of the locking plate 42 and the locking groove 22 gradually decreases during the process of the locking plate 42 turning to the locking groove 22, so as to gradually The fabric 8 is clamped in a design where the knob 4 can only be turned in a specific direction to clamp the fabric 8 using the clamping plate 42. However, in practical applications, once the fabric 8 is clamped to the clamping plate 42 and the slot 22, if the fabric 8 is stretched or tightened in the direction the clamping plate 42 is turned in, the fabric 8 will become tighter and tighter. This effectively prevents the knob 4 from loosening and the fabric 8 from falling off during the stretching or tightening of the fabric 8 along the length of the base 2. If the fabric 8 is pulled in the direction the clamping plate 42 is turned out, the fabric 8 can drive each knob 4 to rotate in the opposite direction, thereby automatically unlocking each knob 4. This is very convenient, efficient, and labor-saving.

[0067] In practice, the card plate 42 can be implemented in various ways. For example, in one implementation, the outer contour 43 of the card plate 42 can preferably be constructed as an elliptical arc structure (in this embodiment, the focus of the ellipse is taken as the center), such as... Figure 10 As shown, not only can the eccentric effect be achieved, but clockwise and counterclockwise rotation can also clamp the fabric 8, which is conducive to clamping the fabric 8 more smoothly and effortlessly.

[0068] In another implementation, such as Figure 11As shown, the outer contour 43 of the clamping plate 42 can be constructed as an arc-shaped structure, and the center of the arc-shaped structure is offset from the center of the hinge, thereby offsetting the rotation center of the knob 4, as shown in the figure, in order to achieve an eccentric design. This not only effectively prevents the knob 4 from loosening and the fabric 8 from falling off during the process of stretching or tensioning the fabric 8 along the length direction of the base 2, but also makes it easier to unlock the fabric 8. In a preferred embodiment, the radius of the arc-shaped structure can be equal to or close to the maximum radius of the knob 4. During the process of the clamping plate 42 turning to the slot 22, when rotating by the same angle, the gap between the outer contour 43 of the clamping plate 42 and the slot 22 decreases by a smaller margin, which is conducive to clamping the fabric 8 more smoothly and effortlessly.

[0069] Similarly, in implementation, the knob 4 can be preferably configured with one or two of the aforementioned card plates 42. When the knob 4 is configured with two of the aforementioned card plates 42, the two card plates 42 can be arranged symmetrically, which is more convenient to use.

[0070] When using this clamping mechanism 1, first turn the knob 4 to disengage the clamping plate 42 from the clamping slot 22. Then, place the fabric 8 on the base 2, covering the clamping slot 22. The edge of the fabric 8 can automatically fall into the receiving slot 24. Figure 9 As shown; then rotate knob 4 so that the clamping plate 42 gradually engages with the clamping slot 22. During this process, the fabric 8 is gradually pressed between the clamping plate 42 and the side 222 of the clamping slot 22, and simultaneously clamped between the clamping plate 42 and the top 221 of the clamping slot 22, as shown. Figure 10 As shown. Even for fabrics 8 of some thickness, the fabric 8 can be further clamped between the clamping plate 42 and the receiving groove 24. This clamping method and structure not only has the various advantages described in Embodiment 1, but also, when the fabric 8 is pulled along the length direction of the base 2, if the direction of the pulling force is the same as the direction in which the clamping plate 42 is screwed in, the knob 4 will be pulled tighter and tighter, and there will be no problem of it falling off; at the same time, when disassembling, simply pull the fabric 8 in the opposite direction to automatically unlock each knob 4, which is very convenient and efficient, and can significantly improve sewing efficiency.

[0071] Example 3

[0072] To ensure the sewing reaches the edges as much as possible while further improving the stability and reliability of the entire clamping mechanism 1, the main difference between this embodiment 3 and the above-mentioned embodiments 1 or 2 is that, in the clamping mechanism 1 provided in this embodiment, the knob 4 is installed at an angle rather than vertically. Specifically, in this embodiment, the upper surface of the base 2 is constructed with an inclined surface 232 that is inclined to the horizontal plane 231, so that the side of the base 2 away from the slot 22 has a greater height and thickness, such as... Figures 12-14As shown, this provides structural reinforcement to the base 2; the guide portion is constructed on the inclined surface 232, and the rotation center of the knob 4 is inclined in the vertical direction (the rotation center of the knob 4 is perpendicular to the inclined surface 232), as shown. Figures 12-14 As shown, the slot 22 is constructed at the bottom end of the inclined surface 232 and faces the tilted knob 4, as shown in the figure. This allows the knob 4 to engage with the slot 22 to clamp and unlock the fabric 8. Because the slot 22 is located at the bottom end of the inclined surface 232, the knob 4 and slot 22 can engage at a lower position. This design not only further ensures the sewing reaches the edge but also significantly improves the rigidity of the entire base 2. This enhances the stability and reliability of the entire clamping mechanism 1 and allows for a longer base 2 to meet the needs of various applications.

[0073] More specifically, in implementation, the guide section uses a guide groove 21, and each side of the guide groove 21 has an upwardly protruding boss 23. The bosses 23 are distributed along the length of the base 2, and the upper surface of the bosses 23 is constructed as an inclined surface 232, such as... Figures 12-14 As shown, the knob 4 is set on the inclined surface 232, which not only supports the knob 4 at an angle and ensures that the rotation center of the knob 4 is in an inclined state, but also effectively reduces the contact area between the knob 4 and the base 2, reduces friction, and facilitates smoother movement and rotation of the knob 4.

[0074] Example 4

[0075] This embodiment provides a clamping frame, including a frame 7 and a clamping mechanism 1 as described in any of embodiments 1-3, wherein the clamping mechanism 1 is mounted on the frame 7.

[0076] The number of clamping mechanisms 1 installed on frame 7 can be determined according to actual needs. In implementation, one or more clamping mechanisms 1 can be configured within the clamping frame. For example, four clamping mechanisms 1 can be configured within the clamping frame, forming a rectangle. Two adjacent clamping mechanisms 1 can be fixedly installed; for instance, these two clamping mechanisms 1 can be fixedly installed on frame 7. Figure 15 As shown. The other two clamping mechanisms 1 are connected to the frame 7 by cylinders 71, so that these two clamping mechanisms 1 can move and can be driven by cylinders 71 to move closer to or away from the opposite clamping mechanism 1, so as to adjust the distance between the two opposite clamping mechanisms 1. This can change the size of the rectangle formed by the four clamping mechanisms 1, so that the fabric 8 can be tensioned in two directions, and fabrics 8 of different sizes can be tensioned.

[0077] In a more complete implementation, a guide module 72 is also provided between the two movable clamping mechanisms 1 and the corresponding frame 7. The guide module 72 can be an existing structure such as a guide rail pair to ensure that the cylinder 71 can drive the clamping mechanism 1 to move strictly in a straight line. This can not only adapt to fabrics 8 of different sizes, but also better tension the fabric 8.

[0078] Of course, in a more complete solution, the clamping frame is also equipped with an air tank. The air tank can be set on the frame 7 and connected to the cylinder 71 to provide an air source for the cylinder 71.

[0079] In implementation, the frame 7 can preferably be a rectangular frame 7, such as... Figure 15 As shown, in practice, a rectangular frame 7 can be formed by combining the clamping mechanism 1 and the frame 7.

[0080] Example 5

[0081] This embodiment provides a quilting machine, which is equipped with any of the clamping mechanisms 1 described in Embodiments 1-3 or with the clamping frame described in Embodiment 4.

[0082] The above description is only a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.

Claims

1. A clamping mechanism, characterized in that, Includes a base, the base being strip-shaped, with a guide portion and a slot constructed along the length of the base, the slot being constructed on one side of the guide portion and facing the inside of the base; A sliding component, wherein the sliding component is movably constrained by a guide portion; as well as The knob has a hinge and a locking plate that mates with the locking slot. The knob is rotatably connected to the sliding component via the hinge. When the knob is rotated in the forward direction, the locking plate screws into the locking slot and clamps the fabric between the locking plate and the locking slot. When the knob is rotated in the reverse direction, the clamped fabric is unlocked.

2. The clamping mechanism according to claim 1, characterized in that, It also includes a connector, which includes a head and a rod connected to the head; the hinge is a hinge hole; the rod of the connector passes through the hinge hole and is detachably connected to the sliding component, and the knob is limited and constrained between the head and the base.

3. The clamping mechanism according to claim 2, characterized in that, It also includes a sleeve, the outer diameter of which is less than or equal to the inner diameter of the hinge hole. The sleeve is fitted onto the connector and located inside the hinge hole. The sleeve is sandwiched between the base and the head of the connector. Alternatively, it may also include a sleeve and a gasket, wherein the outer diameter of the sleeve is less than or equal to the inner diameter of the hinge hole, the sleeve is fitted onto the connector and located inside the hinge hole, the lower end of the sleeve abuts against the gasket, and the gasket abuts against the base, and the sliding component is locked and unlocked by the connector.

4. The clamping mechanism according to claim 1, characterized in that, The slot is located on one edge of the base; The slot includes a top and a side portion connected to the top, the side portion being connected to the base, and the top and side portions extending along the length direction of the base, respectively; The retaining plate is located on the side of the knob; the retaining plate has a plate-like structure. It includes multiple knobs and multiple sliding parts. Each knob is rotatably mounted on a sliding part, and each sliding part is movable and constrained by a guide.

5. The clamping mechanism according to claim 1, characterized in that, The card plate has an outer contour on the side opposite to the knob. The outer contour is constructed as an arc shape, and the center of the arc shape coincides with the center of the hinge.

6. The clamping mechanism according to claim 1, characterized in that, The card plate has an outer contour that is away from the knob, and the outer contour is constructed in an arc shape, the center of which is offset from the center of the hinge.

7. The clamping mechanism according to claim 1, characterized in that, The outer contour of the card plate is an elliptical arc structure; Alternatively, the outer contour of the card plate is constructed as an arc shape, and the center of the arc shape is offset from the center of the hinge.

8. The clamping mechanism according to any one of claims 1-7, characterized in that, The upper surface of the base is also constructed with a receiving groove, which is located inside the card slot and connected to the card slot, and is used to receive the edge of the fabric. And / or, the upper surface of the base is constructed with an inclined surface that is inclined to the horizontal plane; a guide portion is constructed on the inclined surface, and the rotation center of the knob is inclined to the vertical direction; a slot is constructed at the bottom end of the inclined surface and faces the inclined knob. And / or, the guide portion is a guide groove constructed on the upper surface of the base, and the sliding component is a guide block adapted to the guide groove, with the guide block disposed within the guide groove; And / or, the side of the knob is constructed with two adapter slots, and the two slots are arranged symmetrically.

9. A clamping frame, comprising a frame, characterized in that, It also includes the clamping mechanism according to any one of claims 1-7, said clamping mechanism being mounted on the frame.

10. The clamping frame according to claim 9, characterized in that, It includes multiple cylinders and four clamping mechanisms arranged in a rectangle. Two adjacent clamping mechanisms are fixedly installed on the frame, and the other two adjacent clamping mechanisms are connected to the frame through the cylinders. The distance between the two opposing clamping mechanisms is adjusted by the cylinders.

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