Feeding device, sewing machine head and mattress edge machine

Abstract

The present application provides a cloth feeding device, a sewing machine head and a mattress edge machine, and relates to the technical field of mattress production. The cloth feeding device includes: a support assembly, a first conveying roller and a second conveying roller, wherein the first conveying roller and the second conveying roller can be rotatably arranged on the support assembly, and a gap for the cloth strip to pass through is formed between the first conveying roller and the second conveying roller, and at least one of the first conveying roller and the second conveying roller can be moved relative to the support assembly so that the first conveying roller and the second conveying roller are closer to each other or farther away from each other. In the cloth feeding device of the present application, by increasing the distance between the second conveying roller and the first conveying roller, it is convenient to replace the cloth strip between the second conveying roller and the first conveying roller, thereby improving the working efficiency.

Description

Technical Field

[0001] The present application relates to the field of mattress manufacturing, and in particular to a cloth feeding device, a sewing machine head and a mattress edge machine. Background Art

[0002] During the production process of mattresses, the mattresses need to be edged, which means sewing and hemming the edges of the upper and lower surface fabrics of the mattress and the adjacent side fabrics respectively.

[0003] The mattress edge equipment includes a sewing machine head, which is equipped with a cloth feeding device for conveying the fabrics on the sides of the mattress. The cloth strips of required width are conveyed to the sewing machine head, and then the sewing machine head is used to sew the cloth strips with the fabrics on the upper and lower surfaces of the mattress.

[0004] At present, most cloth feeding devices use two conveyor rollers arranged opposite to each other, and the cloth strip is placed between the two conveyor rollers. The cloth strip is pushed to move by the rotation of the conveyor rollers to achieve the purpose of conveying the cloth strip. However, the positions of the two conveyor rollers are relatively fixed, and the conveyor rollers often need to be disassembled and assembled when replacing the cloth strip, which makes the replacement process of the cloth strip difficult and cumbersome, and the operation efficiency is low. Utility Model Content

[0005] The present application provides a cloth feeding device, a sewing machine head and a mattress edge machine, which facilitate the operation of replacing cloth strips and improve work efficiency.

[0006] In a first aspect, the present application provides a cloth feeding device, comprising:

[0007] Support components;

[0008] A first conveying roller is rotatably disposed on the supporting assembly;

[0009] A second conveying roller is rotatably disposed on the supporting assembly and forms a gap with the first conveying roller for the cloth strip to pass through;

[0010] At least one of the first conveying roller and the second conveying roller can move relative to the supporting assembly so that the first conveying roller and the second conveying roller are moved closer to each other or farther away from each other.

[0011] In some embodiments, it further includes a control arm rotatably disposed on the support assembly;

[0012] The second conveying roller is rotatably disposed on the control arm, and the rotation axis of the second conveying roller is parallel to the rotation axis of the control arm and has a preset distance, so that when the control arm rotates, the second conveying roller is driven to approach or move away from the first conveying roller.

[0013] In some embodiments, the control arm is provided with a connecting shaft, the connecting shaft is fixedly provided with a rotating wheel, the axis of the rotating wheel is parallel to the axis of the connecting shaft and has the preset distance;

[0014] Wherein, the rotating wheel is rotatably arranged on the supporting assembly, and the second conveying roller is rotatably arranged on the connecting shaft.

[0015] In some embodiments, a first driver is further included, connected to the control arm, and configured to drive the control arm to swing.

[0016] In some embodiments, a cutter is further included, which is disposed on the supporting assembly and is used to move toward the cloth strip and cut the cloth strip.

[0017] In some embodiments, a former is further included, which is arranged on the supporting assembly and located at the output end of the cloth strip, and is used to change the conveying posture of the cloth strip to a preset posture.

[0018] In some embodiments, it further comprises a pressing wheel, which is rotatably disposed on the supporting assembly, and the outer peripheral surface of the pressing wheel is provided with a forming groove;

[0019] Wherein, the former is provided with a forming part, the forming part is embedded in the forming groove and a forming cavity is provided between the forming part and the inner wall of the forming groove, so that the cloth strip passes through the forming cavity and changes into the preset posture.

[0020] In some embodiments, a driving assembly is further included, and the pressing wheel and the second conveying roller are connected to the driving assembly and are synchronously driven to rotate by the driving assembly, so that the pressing wheel and the second conveying roller synchronously convey the cloth strip.

[0021] In some embodiments, a heat welding assembly is also included, including:

[0022] A limiting member, arranged on the supporting assembly;

[0023] A heat welding head is arranged on the support assembly and is spaced apart from the stopper to form a heat welding chamber;

[0024] A pushing member, movably connected to the supporting assembly, for pushing part of the cloth strip into the hot welding chamber and folding it in half;

[0025] Wherein, at least one of the limiting member and the heat welding head can be moved relative to the other in a direction toward the heat welding chamber, so that the heat welding head and the limiting member can squeeze the cloth strip in a folded state and perform heat welding.

[0026] In some embodiments, the heat welding head is provided with a clearance groove for avoiding the pushing member moving into the heat welding chamber.

[0027] In some embodiments, the heat welding assembly also includes a swing arm and a second driver, one end of the swing arm is rotatably connected to the support assembly, the heat welding head is arranged at the other end of the swing arm, and the second driver is connected to the swing arm for driving the swing arm to swing.

[0028] In some embodiments, the cutter is located between the heat welding assembly and the first conveyor roller.

[0029] In a second aspect, the present application provides a sewing machine head, comprising the cloth feeding device described in the first aspect and any one of its embodiments.

[0030] In a third aspect, the present application provides a mattress edge machine, comprising a conveying platform and the sewing head described in the second aspect, wherein the sewing head is disposed on the conveying platform.

[0031] In the cloth feeding device, sewing machine head and mattress edge machine provided by the present application, the cloth feeding device squeezes the cloth strip at the first conveying roller through the second conveying roller, and uses the rotation of the first conveying roller to push the cloth strip to move, thereby achieving the purpose of conveying the cloth strip, and can change the distance between the second conveying roller and the first conveying roller by rotating the control arm. On the one hand, it can automatically adapt to cloth strips of different thicknesses, and on the other hand, after increasing the distance between the second conveying roller and the first conveying roller, it is convenient to replace the cloth strips, thereby improving the working efficiency of replacing the cloth strips. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0033] Figure 1 This is a schematic diagram of an exemplary structure of a cloth feeding device in an embodiment of the present application;

[0034] Figure 2 for Figure 1 A magnified view of part A;

[0035] Figure 3 This is another exemplary structural diagram of the cloth feeding device in the embodiment of the present application;

[0036] Figure 4 for Figure 3 Partial cross-sectional view in the middle BB direction;

[0037] Figure 5 It is a partial view of the cloth feeding device in the embodiment of the present application;

[0038] Figure 6 This is a diagram showing the state in which the pushing member pushes the cloth strip into the heat welding cavity in the embodiment of the present application.

[0039] Figure 7 This is a schematic diagram of the structure of a sewing machine head in an embodiment of the present application;

[0040] Figure 8 This is a schematic diagram of the structure of the mattress edge machine in the embodiment of the present application.

[0041] Description of reference numerals:

[0042] 100, cloth feeding device; 110, supporting assembly; 111, driving motor; 112, driving belt; 120, first conveying roller; 130, control arm; 131, connecting shaft; 132, rotating wheel; 140, second conveying roller; 150, first driving cylinder; 160, hot welding assembly; 161, hot welding head; 162, limiting member; 163, pushing member; 164, swing arm; 165, second driving cylinder; 170, cutter; 180, former; 181, forming part; 190, pressing wheel; 191, forming groove; 200, cloth strip; 300, sewing machine head; 400, conveying platform; 500, mattress.

[0043] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0044] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0045] Figure 1 This is a schematic diagram of an exemplary structure of a cloth feeding device in an embodiment of the present application; Figure 2 for Figure 1 A magnified view of part A; Figure 3 This is another exemplary structural diagram of the cloth feeding device in the embodiment of the present application.

[0046] Reference Figure 1 and Figure 2The embodiment of the present application provides a cloth feeding device 100, comprising: a support assembly 110, a first conveying roller 120 and a second conveying roller 140. The first conveying roller 120 and the second conveying roller 140 are both rotatably disposed on the support assembly 110, and a gap is formed between the second conveying roller 140 and the first conveying roller 120 for the cloth strip 200 to pass through. At least one of the first conveying roller 120 and the second conveying roller 140 can move relative to the support assembly 110, so that the first conveying roller 120 and the second conveying roller 140 are closer to each other or farther away from each other.

[0047] The support assembly 110 is used to support the first conveyor roller 120 and the second conveyor roller 140 and other structures, and its structural shape can be arbitrary, such as a flat plate structure or a frame structure, and there are no excessive restrictions on this in this embodiment.

[0048] The rotation axis of the first conveying roller 120 can be horizontally arranged and can be arranged on the support assembly 110 through a rotating shaft and a bearing. The second conveying roller 140 can be arranged below the first conveying roller 120, and the rotation axis of the second conveying roller 140 is parallel to the rotation axis of the first conveying roller 120.

[0049] Either the first conveying roller 120 or the second conveying roller 140 may be slidably connected to the supporting assembly 110. For example, in some embodiments, the cloth feeding device 100 further includes a control arm 130, which is rotatably disposed on the supporting assembly 110. The second conveying roller 140 is rotatably disposed on the control arm 130, and the rotation axis of the second conveying roller 140 is parallel to the rotation axis of the control arm 130 and has a preset spacing, so that when the control arm 130 rotates, the second conveying roller 140 is driven to approach or move away from the first conveying roller 120.

[0050] Reference Figure 1 The control arm 130 can be disposed below the first conveying roller 120. When the side of the control arm 130 provided with the second conveying roller 140 deflects downward, the second conveying roller 140 is driven to move downward. Conversely, the second conveying roller 140 can be driven to move upward to change the distance between the second conveying roller 140 and the first conveying roller 120.

[0051] At the initial position, the cloth strip 200 passes through the gap between the second conveyor roller 140 and the first conveyor roller 120, and the second conveyor roller 140 applies pressure to the cloth strip 200 in the direction of the first conveyor roller 120. Either the first conveyor roller 120 or the second conveyor roller 140 can be actively rotated, and the other can be driven to rotate, or both the first conveyor roller 120 and the second conveyor roller 140 can be actively rotated to drive the cloth strip 200 to move by friction.

[0052] In actual use, a driving assembly is disposed on the supporting assembly 110 , and the driving assembly is connected to the first conveying roller 120 or the second conveying roller 140 , and is used to drive the first conveying roller 120 or the second conveying roller 140 to actively rotate.

[0053] Reference Figure 1 , illustratively, the driving assembly may include a driving motor 111 and a transmission belt 112, the driving motor 111 is fixedly mounted on the supporting assembly 110, and the transmission belt 112 is disposed between the first conveying roller 120 and the output shaft of the driving motor 111, so that the driving motor 111 can drive the first conveying roller 120 to actively rotate through the transmission belt 112. Of course, the driving assembly may also be connected to the second conveying roller 140, see Figure 3 The transmission belt 112 is disposed on the second conveying roller 140, and the transmission belt 112 is an elastic polyurethane O-shaped conveyor belt, which can not only drive the second conveying roller 140 to rotate actively, but also satisfy the second conveying roller 140 to move with the swing of the control arm 130. Alternatively, two sets of driving components are provided to be connected to the first conveying roller 120 and the second conveying roller 140 respectively, so as to drive the first conveying roller 120 and the second conveying roller 140 to rotate actively at the same time.

[0054] When replacing the strip of cloth 200, the control arm 130 can be driven to rotate, driving the second conveying roller 140 away from the first conveying roller 120, increasing the distance between the second conveying roller 140 and the first conveying roller 120, and facilitating the removal or insertion of the strip of cloth 200. Conversely, the control arm 130 is driven to rotate upward, reducing the distance between the second conveying roller 140 and the first conveying roller 120, so that the second conveying roller 140 applies pressure to the strip of cloth 200 again. This not only facilitates the replacement operation of the strip of cloth 200, but also can automatically change the distance between the second conveying roller 140 and the first conveying roller 120 according to the thickness of the strip of cloth 200.

[0055] Reference Figure 2 In some embodiments, the control arm 130 is provided with a connecting shaft 131, and a rotating wheel 132 is fixedly provided on the connecting shaft 131. The axis of the rotating wheel 132 is parallel to the axis of the connecting shaft 131 and has a preset spacing. The rotating wheel 132 is rotatably provided on the supporting assembly 110, and the second conveying roller 140 is rotatably provided on the connecting shaft 131.

[0056] Among them, the axis of the connecting shaft 131 and the axis of the rotating wheel 132 are both parallel to the axis of the first conveying roller 120, and the rotating wheel 132 can be connected to the supporting assembly 110 through a bearing, so that the control arm 130, the connecting shaft 131 and the second conveying roller 140 can all rotate around the axis of the rotating wheel 132, and the second conveying roller 140 can rotate around its own axis on the connecting shaft 131.

[0057] In some embodiments, the cloth feeding device 100 further includes a first driver connected to the control arm 130, and used to drive the control arm 130 to swing. Exemplarily, the first driver can be a first driving cylinder 150, the cylinder body of the first driving cylinder 150 is hinged to the support assembly 110, and the piston rod of the first driving cylinder is hinged to the end of the control arm 130 away from the connecting shaft 131, so that the control arm 130 can be driven to swing through the telescopic action of the piston rod of the first driving cylinder 150, and the movement of the second conveying roller 140 can be controlled through the swing of the control arm 130.

[0058] In some embodiments, the cloth feeding device 100 further includes a cutter 170 disposed on the supporting assembly 110 and configured to move toward the cloth strip 200 and cut the cloth strip 200 .

[0059] The cutter 170 can be disposed below the cloth strip 200 and slidably disposed on the support assembly 110 through a guide rail structure, so that the cutter 170 can move up and down. During the conveying process, the cloth strip 200 passes over the cutter 170, and the cutter 170 moves upward to cut the cloth strip 200.

[0060] Reference Figure 1 and Figure 3 In some embodiments, the cloth feeding device 100 may further include a former 180, which is disposed on the supporting assembly and located at the cloth strip output end, and is used to change the conveying posture of the cloth strip 200 to a preset posture.

[0061] The former 180 can be fixedly arranged on the support assembly 110 and located at the end where the cloth strip 200 is output from the support structure 110. The former 180 can be a hollow shell structure with an inlet and an outlet on both sides, so that the cloth strip 200 passes through the heat welding assembly 160 and enters the former 180 through the inlet, and is guided by the cavity inside the former 180 and then moves out from the outlet, changing the posture of the cloth strip 200 when it moves out from the outlet, so that the sewing machine head 300 can sew the cloth strip 200.

[0062] The specific structure of the former 180 can be set based on the actual use requirements when the cloth strip 200 is output, and no specific settings are made in this embodiment.

[0063] Figure 4 for Figure 3 Partial cross-sectional view along the BB direction.

[0064] Reference Figure 3 and Figure 4As shown, in some embodiments, the cloth feeding device 100 may further include a pressing wheel 190, which is rotatably disposed on the supporting assembly 110, and a molding groove 191 is disposed on the outer surface of the pressing wheel 190. The former 180 is provided with a molding part 181, which is embedded in the molding groove 191 and a molding cavity is disposed between the molding part 181 and the inner wall of the molding groove 191, so that the cloth strip 200 passes through the molding cavity and changes to the preset posture.

[0065] The pressing wheel 190 can be disposed at the lower side of the former 180, and the former 180 is provided with a forming portion 181 protruding toward the pressing wheel 190 and embedded downward in the forming groove 191. The fabric strip 200 passes between the former 180 and the pressing wheel 190. On the one hand, the rotation of the pressing wheel 190 can be used to continue to convey the fabric strip 200 forward, so as to prevent the fabric strip 200 from folding and piling up at the former 190. On the other hand, the fabric strip can be bent into a preset posture under the action of the forming groove 191 and the forming portion 181.

[0066] In some embodiments, a driving assembly may be provided, and the pressing wheel 190 and the second conveying roller 140 are connected to the driving assembly and driven to rotate synchronously by the driving assembly, so that the pressing wheel and the second conveying roller convey the cloth strip synchronously.

[0067] Exemplarily, the pressure wheel 190 and the second conveyor roller 140 are connected to a polyurethane O-shaped conveyor belt, so that a driving component can be used to simultaneously drive the pressure wheel 190 and the second conveyor roller 140 to rotate, and the rotation of the pressure wheel 190 and the second conveyor roller 140 can be started or stopped simultaneously, so as to better control the movement of the cloth strip 200.

[0068] Figure 5 It is a partial view of the cloth feeding device 100 in the embodiment of the present application.

[0069] Reference Figure 1 and Figure 5 In some embodiments, the cloth feeding device 100 further includes a heat welding assembly 160, which includes: a stopper 162, a heat welding head 161, and a pusher 163. The stopper 162, the heat welding head 161, and the pusher 163 are all arranged on the support assembly 110, and the heat welding head 161 and the stopper 162 are arranged at intervals to form a heat welding chamber; the pusher 163 is arranged on one side of the heat welding chamber and is movably connected to the support assembly 110, and is used to push part of the cloth strip 200 into the heat welding chamber and fold it in half.

[0070] At least one of the stopper 162 and the heat welding head 161 can move relative to the other toward the heat welding chamber, so that the heat welding head 161 and the stopper 162 can squeeze the folded cloth strip 200 and perform heat welding.

[0071] The pusher 163 can be arranged below the heat welding chamber and can be connected to the support assembly 110 through a structure such as a slide rail, so that the pusher 163 can move upward into the heat welding chamber. The heat welding assembly 160 is located on the side of the cutter 170 away from the second conveyor roller 140. When the cloth strip 200 is cut by the cutter 170, the cloth strip 200 located in front of the cutter 170 is bent upward into the heat welding chamber by the pusher 163, so that the part of the cloth strip 200 is folded in half in the heat welding chamber. Then, the two layers of cloth strip 200 are squeezed by the relative movement of the heat welding head 161 and the stopper 162, and the heat welding head 161 heat welds the two layers of cloth strip 200 together, so as to eliminate the burrs generated by cutting at the end of the cloth strip 200, so that the end of the cloth strip 200 is overall beautiful.

[0072] In some embodiments, the heat welding head 161 is provided with a clearance groove for accommodating the pushing member 163 moving into the heat welding chamber.

[0073] Figure 6 This is a diagram showing the state in which the pushing member pushes the cloth strip into the heat welding cavity in the embodiment of the present application.

[0074] Reference Figure 6 The width of the pushing member 163 is smaller than the width of the cloth strip 200 , so that after the pushing member 163 pushes the cloth strip into the heat welding cavity, the two folded layers of cloth strip 200 located on both sides of the pushing member 163 can be attached together.

[0075] Recombination Figure 5 As shown, when the hot welding head 161 moves toward the direction of the limiting member 162, the pushing member 163 can be embedded in the giving groove of the hot welding head 161, so that the hot welding head 161 can perform heat welding on some of the cloth strips on both sides of the pushing member 163, and can also make the pushing member 163 smoothly detach from the two layers of cloth strips 200 after heat welding to avoid affecting the normal movement of the subsequent cloth strips 200.

[0076] Of course, a clearance groove corresponding to the hot welding head 161 can also be provided on the pushing member 163, so that when the pushing member 163 carries the cloth strip 200 and is in the hot welding chamber, the hot welding head 161 can pass through the clearance groove on the pushing member 163 to squeeze the two layers of cloth strip 200 onto the limiting member 162 to complete the hot welding process of the cloth strip 200, and the pushing member 163 can also be removed from the two layers of cloth strip 200 after hot welding.

[0077] The relative movement of the limit member 162 and the hot welding head 161 can be that the limit member 162 and the support assembly 110 are relatively fixed, and the hot welding head 161 moves toward the limit member 162, or the hot welding head 161 and the support assembly 110 are relatively fixed, and the limit member 162 moves toward the hot welding head 161, or the hot welding head 161 and the limit member 162 move at the same time, all of which can achieve the squeezing action on the cloth strip 200.

[0078] In some embodiments, when the position of the stopper 162 is fixed, the heat welding assembly 160 may further include a swing arm 164, one end of which is rotatably connected to the support assembly 110, and the heat welding head 161 is disposed at the other end of the swing arm 164. The swing arm 164 may be a vertically disposed rod-shaped component, the top end of the swing arm 164 is hinged to the support assembly 110, and the heat welding head 161 is fixedly disposed at the bottom end of the swing arm 164, so as to control the relative movement of the heat welding head 161 and the stopper 162 by swinging the swing arm.

[0079] In some embodiments, the heat welding assembly 160 further includes a second driver connected to the swing arm 164, and used to drive the swing arm 164 to swing. Exemplarily, the second driver can be a second driving cylinder 165, the cylinder body of the second driving cylinder 165 is fixed to the support assembly 110, and the piston rod is hinged to the swing arm 164, so that the swing of the swing arm 164 can be controlled by the extension and retraction of the piston rod of the second driving cylinder 165, so as to realize the movement of the heat welding head 161.

[0080] In addition, the cutter 170 may be disposed between the heat welding assembly 160 and the first conveying roller 140 , so that after the fabric strip 200 is cut by the cutter 170 , the heat welding assembly 160 can be used to remove burrs on the fabric strip 200 caused by cutting, making the end of the fabric strip 200 more beautiful.

[0081] The cloth feeding device 100 provided in this embodiment squeezes the cloth strip 200 onto the first conveying roller 120 through the second conveying roller 140, so that when the first conveying roller 120 rotates, the cloth strip 200 is pushed to move by friction force, thereby achieving the purpose of conveying the cloth strip 200. The first driving cylinder 150 can drive the control arm 130 to swing around the axis of the rotating wheel 132, and drive the second conveying roller 140 to move away from the first conveying roller 120, thereby increasing the distance between the second conveying roller 140 and the first conveying roller 120, so as to facilitate the replacement of the cloth strip 200, without disassembling the first conveying roller 120 or the second conveying roller 140, thereby improving the efficiency of replacing the cloth strip 200.

[0082] In addition, the cloth feeding device 100 also includes a heat welding assembly 160 and a cutter 170, which can push the cloth strip 200 into the heat welding chamber and fold it in half by moving the pusher 163, and then use the relative movement of the stopper 162 and the heat welding head 161 to squeeze the folded cloth strip 200 for heat welding. At the same time, the cutter 170 can cut the cloth strip 200, so that the heat-welded part is disconnected from the unheat-welded part, so as to realize the heat welding and cutting of the cloth strip 200 during the conveying process.

[0083] Figure 7 It is a schematic diagram of the structure of the sewing machine head in the embodiment of the present application.

[0084] Reference Figure 7This embodiment further provides a sewing machine head 300, including the cloth feeding device 100 mentioned above. The sewing machine head 300 can be applied to a mattress edge taping machine. During the edge taping of a mattress, the cloth feeding device 100 feeds a cloth strip 200 to the mattress, and the sewing machine head 300 sews the cloth strip 200 onto the mattress 500.

[0085] Figure 8 It is a schematic diagram of the structure of the mattress edge machine in the embodiment of the present application.

[0086] Reference Figure 8 Based on the above-mentioned sewing machine head 300, this embodiment further provides a mattress edge machine, including a conveying platform 400 and the above-mentioned sewing machine head 300, and the sewing machine head 300 is arranged on one side of the conveying platform 400. The conveying platform 400 can be a belt conveying mechanism, which is used to place the processed mattress 500, so that the side of the mattress 500 passes through the sewing machine head 300. During the movement of the mattress 500, the cloth strip 200 is conveyed to the mattress 500 by the cloth feeding device 100, and the cloth strip 200 is sewn on the side of the mattress 500 in cooperation with the sewing machine head 300, so as to complete the edge processing of the mattress 500.

[0087] The embodiments of the present application are described in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and its core idea of ​​the present application. At the same time, changes or deformations made by those skilled in the art based on the ideas of the present application, the specific implementation methods and the scope of application of the present application, all belong to the scope of protection of the present application. In summary, the content of this specification should not be construed as a limitation on the present application.

Claims

1. A cloth feeding device, characterized in that: include: Support components; A first conveying roller is rotatably disposed on the supporting assembly; A second conveying roller is rotatably disposed on the supporting assembly and forms a gap with the first conveying roller for the cloth strip to pass through; At least one of the first conveying roller and the second conveying roller can move relative to the supporting assembly so that the first conveying roller and the second conveying roller are moved closer to each other or farther away from each other.

2. The cloth feeding device according to claim 1, characterized in that: Also included is a control arm rotatably disposed on the support assembly; The second conveying roller is rotatably disposed on the control arm, and the rotation axis of the second conveying roller is parallel to the rotation axis of the control arm and has a preset distance, so that when the control arm rotates, the second conveying roller is driven to approach or move away from the first conveying roller.

3. The cloth feeding device according to claim 2, characterized in that: The control arm is provided with a connecting shaft, the connecting shaft is fixedly provided with a rotating wheel, the axis of the rotating wheel is parallel to the axis of the connecting shaft and has the preset distance; Wherein, the rotating wheel is rotatably arranged on the supporting assembly, and the second conveying roller is rotatably arranged on the connecting shaft.

4. The cloth feeding device according to claim 3, characterized in that: It also includes a first driver connected to the control arm and used for driving the control arm to swing.

5. The cloth feeding device according to claim 1, characterized in that: It also includes a cutter, which is arranged on the supporting assembly and is used for moving toward the direction of the cloth strip and cutting the cloth strip.

6. The cloth feeding device according to claim 5, characterized in that: It also includes a former, which is arranged on the supporting component and located at the output end of the cloth strip, and is used to change the conveying posture of the cloth strip into a preset posture.

7. The cloth feeding device according to claim 6, characterized in that: It also includes a pressing wheel, which is rotatably arranged on the supporting assembly, and the outer peripheral surface of the pressing wheel is provided with a forming groove; Wherein, the former is provided with a forming part, the forming part is embedded in the forming groove and a forming cavity is provided between the forming part and the inner wall of the forming groove, so that the cloth strip passes through the forming cavity and changes into the preset posture.

8. The cloth feeding device according to claim 7, characterized in that: It also includes a driving assembly, the pressing wheel and the second conveying roller are connected to the driving assembly and are synchronously driven to rotate by the driving assembly, so that the pressing wheel and the second conveying roller synchronously convey the cloth strip.

9. The cloth feeding device according to any one of claims 5 to 8, characterized in that: Also included are heat-welded components, including: A limiting member, arranged on the supporting assembly; A heat welding head is arranged on the support assembly and is spaced apart from the stopper to form a heat welding chamber; A pushing member, movably connected to the supporting assembly, for pushing part of the cloth strip into the hot welding chamber and folding it in half; Wherein, at least one of the limiting member and the heat welding head can be moved relative to the other in a direction toward the heat welding chamber, so that the heat welding head and the limiting member can squeeze the cloth strip in a folded state and perform heat welding.

10. The cloth feeding device according to claim 9, characterized in that: The heat welding head is provided with a clearance groove for avoiding the pushing member moving into the heat welding chamber.

11. The cloth feeding device according to claim 9, characterized in that: The heat welding assembly also includes a swing arm and a second driver, one end of the swing arm is rotatably connected to the support assembly, the heat welding head is arranged at the other end of the swing arm, and the second driver is connected to the swing arm for driving the swing arm to swing.

12. The cloth feeding device according to claim 9, characterized in that: The cutter is located between the heat welding assembly and the first conveying roller.

13. A sewing machine head, characterized in that: The invention comprises a cloth feeding device as claimed in any one of claims 1 to 12.

14. A mattress edge machine, characterized in that: It comprises a conveying platform and the sewing machine head according to claim 13; Wherein, the sewing machine head is arranged on the conveying platform.

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