Welding device and bagged spring machine

Abstract

The invention discloses a welding device and a bagged spring machine. The welding device comprises a first welding assembly, a first swing mechanism and a first displacement mechanism. The first welding assembly is used for welding the cloth so as to joint one side of the opening of the cloth together; the first swing mechanism is connected to the first welding assembly, a rotating shaft is formed on the first swing mechanism, and the first swing mechanism is used for driving the first welding assembly to rotate around the rotating shaft to change the welding track; the first displacement mechanism is connected to the first swing mechanism and used for driving the first swing mechanism to move transversely. The first swing mechanism can drive the first welding assembly to achieve adjustment of the welding direction of the first welding assembly, the first displacement mechanism can change the position of the first welding assembly in the transverse direction, steering of the first welding assembly at any angle on the working face and adjustment of the first welding assembly at any position in the transverse direction are achieved, and longitudinal movement of a cloth bag is matched. The curve sewing effect of the side opening of the cloth bag is achieved.

Description

Technical Field

[0001] The present application relates to the technical field of pocket spring production, and in particular to a welding device and a pocket spring machine. Background Art

[0002] Pocket springs are widely used in mattress production. The common form is that multiple cylindrical or drum-shaped pocket springs are placed in cloth bags. The cloth bags are welded to form a spring string, and then multiple spring strings are glued side by side to form a mattress core. With the widespread application of pocket springs, more and more sofa cushions also use pocket spring cores as the main supporting structure. However, due to the different specifications and different curvatures of the surface of sofa cushion cores, pocket springs of different specifications need to be used for flexible combination.

[0003] In the related art, the heights of multiple springs arranged in the same bag are the same, so when sewing the bag, it is only necessary to sew the adjacent springs to encapsulate the multiple springs in independent bag chambers. However, when springs of different specifications are placed in the bag (for example, the heights of the springs are different), the edge of the bag needs to be sewn in a curve according to the height change of the springs, so an automated production solution that can sew the curved edge is urgently needed. Summary of the invention

[0004] In order to solve at least one of the above-mentioned technical problems, the present application provides a welding device, which can achieve the effect of welding the side opening of the cloth along a curved trajectory, and the technical solution adopted is as follows.

[0005] The welding device provided in the first aspect of the present application is used for welding cloth fed along the longitudinal direction, and the welding device includes a first welding component, a first swinging mechanism and a first displacement mechanism. The first welding component is used to clamp the cloth to join one side of the opening of the cloth together. The first swinging mechanism is connected to the first welding component, and the first swinging mechanism is formed with a rotating shaft. The first swinging mechanism is used to drive the first welding component to rotate around the rotating shaft to change the welding trajectory; the first displacement mechanism is connected to the first swinging mechanism, and the first displacement mechanism is used to drive the first swinging mechanism to move laterally.

[0006] In certain embodiments of the first aspect of the present application, the first swing mechanism includes a first driving member and a first transmission member, the first transmission member connects the first driving member and the first welding assembly, the first driving member drives the first transmission member to drive the first welding assembly to rotate, and adjusts the angle between the first welding assembly and the fabric feeding direction.

[0007] In certain embodiments of the first aspect of the present application, the first transmission member includes a pair of gears meshing with each other, wherein one of the gears is connected to the first driving member, the axis of the other gear is formed as the rotating shaft, and the other gear is connected to the first welding assembly, and the first driving member drives the gears to rotate to drive the first welding assembly to rotate.

[0008] In certain embodiments of the first aspect of the present application, the welding device also includes a first bracket and a second bracket, the first swing mechanism and the first welding assembly are arranged on the first bracket, the first displacement mechanism is arranged on the second bracket, the first bracket is connected to the second bracket in a transverse sliding manner, and the output end of the first displacement mechanism is connected to the first bracket to drive the first bracket to move in a transverse direction.

[0009] In certain embodiments of the first aspect of the present application, the first welding assembly includes a first die head and a first welding head, the first die head and the first welding head can be close to each other to clamp the fabric, the rotation axes of the first die head and the first welding head are parallel to each other, the welding position of the first welding assembly is located on the extension line of the rotating axis, and the first die head and the first welding head rotate synchronously to weld the fabric.

[0010] In certain embodiments of the first aspect of the present application, the first welding assembly further includes a second driving member and a third driving member that are driven synchronously, the second driving member drives the first die head to rotate, and the third driving member drives the first welding head to rotate; or

[0011] The first welding assembly further includes a fourth driving member, and the fourth driving member synchronously drives the first die head and the first welding head to rotate.

[0012] In certain embodiments of the first aspect of the present application, the first welding head includes a first working surface and a second working surface coaxially arranged, and when the first welding head and the first die head are close to each other, the first die head abuts against the first working surface and the second working surface at the same time, the first working surface is used for welding cloth, and the second working surface is used for cutting cloth, and the second working surface is arranged on the side of the first working surface away from the cloth bag.

[0013] In certain embodiments of the first aspect of the present application, the first welding assembly also includes a fifth driving member and a flexible transmission shaft, the first die head and the first welding head can be moved away from each other to allow the fabric to enter or be taken out, either the first die head and the first welding head is connected to the flexible transmission shaft, the flexible transmission shaft is connected to the driving member of the first die head or the second die head, and the fifth driving member drives the first die head or the first welding head connected to the flexible transmission shaft to bring the first die head and the first welding head closer to each other.

[0014] In certain embodiments of the first aspect of the present application, the first welding assembly includes a second die head and a second welding head, and the second die head and the second welding head can be close to each other in the vertical direction to clamp and weld the fabric; the welding device also includes a cutter assembly, and the cutter assembly is arranged downstream of the first welding assembly.

[0015] In certain embodiments of the first aspect of the present application, the welding device further includes a second displacement mechanism, wherein the second displacement mechanism is connected to the cutter assembly to drive the cutter assembly to move laterally.

[0016] In certain embodiments of the first aspect of the present application, the welding device further includes a second swing mechanism, and the second swing mechanism is used to drive the cutter assembly to swing.

[0017] In certain embodiments of the first aspect of the present application, the second swinging mechanism includes a sixth driving member and a second transmission member, the second transmission member is formed with two eccentrically arranged rotating shafts, the sixth driving member is connected to one of the rotating shafts, and the other rotating shaft is connected to the cutter assembly, and the sixth driving member reciprocates to drive the second rotating member to rotate, thereby driving the cutter assembly to rotate.

[0018] In certain embodiments of the first aspect of the present application, the welding device also includes at least one guide wheel group, the guide wheel group includes at least two guide wheels, the guide wheel group is arranged upstream of the first welding assembly along the fabric feeding direction, and the two guide wheels are used to clamp the opening of the fabric.

[0019] In the second aspect, the present application also provides a pocket spring machine, including a spring coiling mechanism, a compression mechanism, a conveying mechanism and the welding device provided in the first aspect, wherein the spring coiling mechanism is used to coil the steel wire into a spring; the compression mechanism is used to compress the spring and feed the compressed spring into a cloth bag, and the conveying mechanism is used to transfer the spring from the spring coiling mechanism to the compression mechanism.

[0020] In certain embodiments of the second aspect of the present application, the pocket spring machine also includes a second welding assembly, which is arranged downstream of the first welding assembly along the feeding direction, and the second welding assembly includes a vertically distributed second die head and a second welding head, and the second die head and the second welding head can be close to each other to clamp the cloth and weld the cloth in the transverse direction.

[0021] In certain embodiments of the second aspect of the present application, the second welding assembly can move relative to the fabric feeding direction, and the second die head and the second welding head swing along the fabric feeding direction when clamping the fabric to pull the fabric to move.

[0022] In certain embodiments of the second aspect of the present application, the pocket spring machine also includes a discharge mechanism, which is arranged downstream of the welding device along the feeding direction, and the discharge mechanism includes an air duct and a fan, the fan is used to evacuate air from the air duct, and the air duct is used to recover the cut edges of the cloth.

[0023] In certain embodiments of the second aspect of the present application, the discharge mechanism further includes a clamping wheel group, which is disposed upstream of the air duct and is used to clamp and pull the edge of the cloth to discharge it from the air duct.

[0024] The embodiments of the present application have at least the following beneficial effects: when the welding device welds the side opening of the cloth bag, the cloth bag moves along the longitudinal feed. By setting a first swing mechanism to drive the first welding assembly to turn on the working surface, the welding direction of the first welding assembly can be adjusted, that is, the angle between the welding direction of the first welding assembly and the longitudinal direction can be adjusted. By using the first displacement mechanism to drive the first swing mechanism to move in the lateral direction, the position of the first welding assembly in the lateral direction can be changed. Therefore, through the cooperation of the first swing mechanism and the displacement structure, the first welding assembly can be turned at any angle on the working surface and adjusted to any position in the lateral direction. At the same time, in conjunction with the longitudinal movement of the cloth bag, a curved welding trajectory can be formed after the cloth passes through the first welding assembly, thereby achieving a curved sewing effect of the side opening of the cloth bag. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The aspects and advantages described and / or attached in the embodiments of the present application will become apparent and easy to understand in conjunction with the following drawings. It should be noted that the embodiments embodied in the following drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0026] Figure 1 A schematic diagram of the structure of the pocket spring provided in the embodiment of the present application;

[0027] Figure 2 A top view of a welding device provided in an embodiment of the present application;

[0028] Figure 3 A schematic structural diagram of a first viewing angle of a first implementation manner of a welding device provided in an embodiment of the present application;

[0029] Figure 4 A schematic structural diagram of a second viewing angle of a first implementation manner of a welding device provided in an embodiment of the present application;

[0030] Figure 5 A side view of a first embodiment of a welding device provided in an embodiment of the present application;

[0031] Figure 6A schematic structural diagram of a second embodiment of a welding device provided in an embodiment of the present application;

[0032] Figure 7 A schematic diagram of the structure of the second swing mechanism of the welding device provided in an embodiment of the present application from a first viewing angle;

[0033] Figure 8 This application is a schematic diagram of the structure of the second swing mechanism of the welding device provided for implementation in a second viewing angle;

[0034] Fig. 9 A schematic diagram of the structure of a pocket spring machine provided in an embodiment of the present application;

[0035] Fig.10 A schematic diagram of the partial structure of a pocket spring machine provided in an embodiment of the present application.

[0036] 1. The first welding assembly; 2. The first die head; 3. The first welding head; 4. The first working surface; 5. The second working surface; 6. The second driving member; 7. The third driving member; 8. The fifth driving member; 9. The flexible transmission shaft; 10. The second die head; 11. The first welding head; 12. The first welding head; 13. The second driving member; 14. The third driving member; 15. The fifth driving member; 16. The flexible transmission shaft; 17. The second die head; 18. The second welding head; 102. The second swing mechanism; 1021. The sixth driving member; 1022. The second transmission member; 20. The first swing mechanism; 21. The first driving member; 22. The first transmission member; 221. The fan gear; 30. The first displacement mechanism; 32. The second displacement mechanism; 41. The first bracket; 42. The second bracket; 43. The first guide structure; 44. The third bracket; 45. The fourth bracket; 46. The second guide structure; 50. The guide wheel group; 51. The guide wheel; 60. The cutter assembly; 61. The cutter;

[0037] 200, spring machine; 201, spring coiling mechanism; 202, conveying mechanism; 203, compression mechanism; 204, second welding assembly; 2041, third die head; 2042, third welding head; 2043, hinge point; 205, discharge mechanism; 2051, air duct; 2052, fan; 2053, clamping wheel assembly;

[0038] 300, fabric; 301, edge material; 302, bag chamber; 303, arc weld; 304, straight weld. DETAILED DESCRIPTION

[0039] Combine the following Figures 1 to 10 Embodiments of the present application are described in detail, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0040] In the description of the present application, it should be understood that if the terms "center", "middle", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, "multiple" means two or more.

[0041] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0042] See also Figure 1 When pocket springs are used to fill sofa cushions and other products, in order to meet the requirements of the surface curvature of the sofa cushions, pocket springs are packaged in a bag with springs of different specifications in sequence to combine them. For example, springs of different heights are placed in the bag so that the side of the pocket spring has a curved profile, thereby adapting to the surface curvature of sofa cushions of different specifications. However, when springs of different heights are placed in the bag, the opening profile of the side of the bag presents an irregular shape, so it is necessary to do curved stitching according to the height change of the spring.

[0043] Based on this, see Figures 1 to 4 In a first aspect, the present application provides a welding device 100, the welding device 100 is used for welding a longitudinal feed (such as Figure 2 The welding device 100 includes a first welding assembly 10, a first swing mechanism 20 and a first displacement mechanism 30. The first welding assembly 10 is used to clamp the cloth 300 and join the open sides of the cloth 300 together. The first swing mechanism 20 is connected to the first welding assembly 10. The first swing mechanism 20 is formed with a rotating shaft. The first swing mechanism 20 is used to drive the first welding assembly 10 to rotate around the rotating shaft to change the welding trajectory. The first displacement mechanism 30 is connected to the first swing mechanism 20. The first displacement mechanism 30 is used to drive the first swing mechanism 20 to move horizontally (such as Figure 2The cloth 300 is folded in half to form a cloth bag with a side opening, and springs of different heights are filled in the cloth bag. The side opening of the cloth bag is arranged toward the welding device 100, and the plane where the side opening of the cloth bag is located is the working surface of the first welding assembly 10, and the working surface can be arranged parallel or substantially parallel to the horizontal direction. When the welding device 100 welds the side opening of the cloth bag, the cloth bag moves along the longitudinal direction y (for example, Figure 2 The positive y-axis in Figure 3 The negative direction of the y-axis in the figure). By setting the first swing mechanism 20 to drive the first welding assembly 10 to turn on the working surface, the welding direction of the first welding assembly 10 can be adjusted, that is, the angle between the welding direction of the first welding assembly 10 and the longitudinal direction y can be adjusted. The first displacement mechanism 30 drives the first swing mechanism 20 to move along the transverse direction x, so that the position of the first welding assembly 10 in the transverse direction x can be changed. Therefore, through the cooperation of the first swing mechanism 20 and the displacement structure, the first welding assembly 10 can be turned at any angle on the working surface and adjusted to any position along the transverse direction x. At the same time, in conjunction with the longitudinal y movement of the cloth bag, a curved welding trajectory (arc weld 303) can be formed after the cloth 300 passes through the first welding assembly 10, so as to achieve a curved suture effect of the side opening of the cloth bag.

[0044] In some embodiments, the first swing mechanism 20 includes a first driving member 21 and a first transmission member 22, the first transmission member 22 connects the first driving member 21 and the first welding assembly 10, and the first driving member 21 drives the first transmission member 22 to drive the first welding assembly 10 to rotate, and adjust the angle of the first welding assembly 10 in the cloth feeding direction y. By utilizing the transmission effect of the first driving member 21 and the first transmission member 22, the first driving member 21 and the first transmission member 22 can rotate relative to each other under the action of the driving force, so that the angle adjustment of the angle between the first welding assembly 10 and the feeding direction of the cloth 300 can be changed, and the first welding assembly 10 can form an arc-shaped motion trajectory on the cloth 300 in coordination with the feeding movement of the cloth 300, thereby forming an arc-shaped weld 303.

[0045] In some embodiments, the first transmission member 22 includes a pair of gears meshing with each other, wherein one gear is connected to the first driving member 21, the axis of the other gear is formed as a rotating shaft, and the other gear is connected to the first welding assembly 10, and the first driving member 21 drives the gears to rotate to drive the first welding assembly 10 to rotate. By utilizing the meshing action of the gears, it is possible to ensure that the first driving member 21 and the first welding assembly 10 have good connection strength, avoid problems such as slipping, and improve the reliability of the transmission.

[0046] Exemplarily, the gear connected to the first welding assembly 10 may be a sector gear 221, which can control the relative rotation range with the first driving member 21. For example, the angular range of the sector gear 221 relative to the first driving member 21 may be -45° to +45°, and it helps to reduce the volume of the gear, thereby making the structure of the first transmission member 22 simpler.

[0047] As an alternative embodiment, the first transmission member 22 can also be set to an arc groove, a curved groove or other structural forms, and the first driving member 21 can be limited to move in the arc groove, thereby forming a curved activity trajectory to meet the needs of arc welding.

[0048] As an alternative embodiment, the first swing mechanism 20 can also be configured in the form of a movable arm, and the welding trajectory of the first welding assembly 10 can be changed by changing the direction of the movable arm.

[0049] It should be noted that the rotating shaft can be a virtual structure. When the first transmission member 22 adopts a gear structure, the rotation axis of the gear is formed as the rotating shaft, and the first welding assembly 10 is driven to rotate by the rotation of the gear. When the first transmission member 22 adopts an arc groove structure, the straight line where the center of the arc groove is located is the rotating shaft. When the first swing mechanism 20 adopts the form of a mechanical arm, the rotating shaft is the axis around which the mechanical arm rotates. It can be seen that the specific formation method of the rotating shaft is related to the specific setting method and structural form of the first swing mechanism 20, and is not specifically limited here. Therefore, in the present application, no matter what setting method the first swing mechanism 20 adopts, the first swing mechanism 20 always has a rotating shaft, and the first welding assembly 10 can rotate around the rotating shaft.

[0050] In some embodiments, the welding device 100 further includes a first bracket 41 and a second bracket 42, the first swing mechanism 20 and the first welding assembly 10 are disposed on the first bracket 41, the first displacement mechanism 30 is disposed on the second bracket 42, the first bracket 41 and the second bracket 42 are slidably connected along the transverse direction x, and the output end of the first displacement mechanism 30 is connected to the first bracket 41 to drive the first bracket 41 to move along the transverse direction x. By slidably connecting the first bracket 41 and the second bracket 42 along the transverse direction x and using the first displacement mechanism 30 to drive the first bracket 41, the transverse drive of the first welding assembly 10 can be achieved.

[0051] Furthermore, a first guide structure 43 can be provided in the welding device, for example, it can be in the form of a combination of a guide rail and a slider, the guide rail can be extended along the horizontal direction x, one of the first bracket 41 and the second bracket 42 is provided with a guide rail, and the other is provided with a slider, and the first guide structure utilizes the sliding connection between the guide rail and the slider, and the first guide structure utilizes the cooperation of the first guide structure 43 on the first bracket 41 and the second bracket 42 to provide guidance for the movement of the first bracket 41, thereby improving the accuracy and movement stability of the moving trajectory of the first bracket 41 when it moves relative to the second bracket 42, thereby avoiding jitter or deviation of the first welding component 10 when it moves horizontally x, improving the reliability of the first welding component 10 when it moves horizontally x, and thereby improving the effect of arc welding on the side of the cloth 300.

[0052] In some embodiments, the first welding assembly 10 includes a first die head 11 and a first welding head 12. The first die head 11 and the first welding head 12 can be close to each other to clamp the fabric 300. The rotation axes of the first die head 11 and the first welding head 12 are parallel to each other. The welding position of the first welding assembly 10 is located on the extension line of the rotating shaft. The first die head 11 and the first welding head 12 rotate synchronously to weld the fabric 300. When the first welding head 12 and the first die head 11 clamp the fabric 300, the extrusion force provided to the fabric 300 can realize the welding of the two layers of fabric 300 in the bag opening. The first die head 11 and the first welding head 12 rotate synchronously, which can make the feeding speed of the upper and lower layers of fabric 300 in the bag opening consistent, thereby ensuring that the welds on the upper and lower surfaces of the bag have a uniform and smooth effect. By setting the welding position of the first welding assembly 10 (i.e. the position where the first die head 11 and the first welding head 12 are connected to each other) on the rotating shaft, the welding position of the first welding assembly 10 can be rotated when the rotating shaft rotates, thereby adjusting the welding direction.

[0053] The first die head 11 and the first welding head 12 in the first welding assembly 10 can be driven by different drivers respectively, or by the same driver. Specifically, in some examples, the first welding assembly 10 also includes a second driver 13 and a third driver 14 that are driven synchronously, the second driver 13 drives the first die head 11 to rotate, and the third driver 14 drives the first welding head 12 to rotate. In this way, the first welding head 12 and the first die head 11 can be driven in an independent driving manner, and the driving of the two can not affect each other and avoid mutual interference. In order to make the first welding head 12 and the first die head 11 have the same rotation speed, the second driver 13 and the third driver 14 can be driven synchronously, for example, both are connected to the same control component, and the control component controls the second driver 13 and the third driver 14 to rotate synchronously. In other examples, the first welding assembly 10 also includes a fourth driver, and the fourth driver synchronously drives the first die head 11 and the first welding head 12 to rotate. The fourth driving member is used to synchronously drive the first die head 11 and the first welding head 12 to rotate, which can ensure the synchronization of the rotation of the first die head 11 and the first welding head 12. For example, the fourth driving member can be connected to the first die head 11 and the first welding head 12 by a rotating member such as a gear or a belt to achieve a synchronous driving effect of the two.

[0054] When the first welding assembly 10 welds the opening of the cloth 300, it is usually necessary to use a cutter to cut the welded cloth 300, so as to cut off the edge of the cloth bag after the opening is joined, and obtain a cloth bag of appropriate size. Specifically, the cutter can be integrally provided with the first welding assembly 10, or the cutter can be separately provided with the first welding assembly 10, and the examples of both will be described below.

[0055] In the first case, see Figure 5The first welding head 12 includes a first working surface 121 and a second working surface 122 which are coaxially arranged. When the first welding head 12 and the first die head 11 are close to each other, the first die head 11 abuts against the first working surface 121 and the second working surface 122 at the same time. The first working surface 121 is used for welding the cloth 300, and the second working surface 122 is used for cutting the cloth 300. The second working surface 122 is arranged on the side of the first working surface 121 away from the cloth bag. Exemplarily, the first working surface 121 is a welding head with a welding function, and the second working surface 122 is a cutter with a cutting function, and the cutter is arranged in the form of a roller, so that the second working surface 122 can rotate simultaneously with the first working surface 121. By setting two working surfaces for the first welding head 12, that is, the cutter is also set in the form of a roller, and the two working surfaces are coaxially arranged, so that when the cloth 300 passes through the first welding assembly 10 once, the effects of welding and cutting the cloth 300 can be achieved at the same time, and the reserved edge material 301 of the cloth 300 can be cut through the second working surface 122, so that the cloth bag has a suitable size, and the effect of welding the cloth 300 is improved. With this setting method, the cutting function of the cutter can be integrated on the first welding assembly 10, which helps to make the structure of the first welding assembly 10 more compact.

[0056] In some embodiments, the first welding assembly 10 further includes a fifth driving member 15 and a flexible transmission shaft 16. The first die head 11 and the first welding head 12 can be moved away from each other to allow the cloth 300 to enter or be taken out. Either of the first die head 11 and the first welding head 12 is connected to the flexible transmission shaft 16. The flexible transmission shaft 16 is connected to the driving member of the first die head 11 or the second die head 17. The fifth driving member 15 drives the first die head 11 or the first welding head 12 connected to the flexible transmission shaft 16 so that the first die head 11 and the first welding head 12 are close to each other. Taking the fifth driving member 15 connected to the first welding head 12 as an example, the fifth driving member 15 can provide a driving force for the mutual approach and clamping between the first welding head 12 and the first die head 11. When it is necessary to separate the first die head 11 and the first welding head 12, the fifth driving member 15 drives the first welding head 12 to move away from the first die head 11. The first welding head 12 is connected by the flexible transmission shaft 16, which can provide freedom for the movement of the first welding head 12, so that the first welding head 12 can move closer to or farther from the first die head 11. Exemplarily, the flexible transmission shaft 16 can be a structure such as a universal joint, and the fifth driving member 15 can drive the first welding head 12 along an axial direction perpendicular to the flexible transmission shaft 16.

[0057] As an alternative embodiment, the fifth driving member 15 may be connected to the first die head 11 to drive the first die head 11 to move closer to or farther away from the first welding head 12 . In this case, the flexible transmission shaft 16 may be connected to the first die head 11 .

[0058] In the second example, see Figures 6 to 8 The first welding assembly 10 includes a second die head 17 and a second welding head 18, which can be close to each other in the vertical direction to clamp and weld the cloth 300; the welding device 100 also includes a cutter assembly 60, which is arranged downstream of the first welding assembly 10. By setting the cutter and the first welding assembly 10 separately, the position of the cutter assembly 60 can be flexibly set according to the actual cutting location, thereby improving the flexibility and adaptability of the setting of the cutter assembly 60 while realizing the function of cutting the edge of the cloth 300.

[0059] For example, the cutter assembly 60 can realize the cutting function by a motor driving the cutter 61 to rotate. The cutter 61 can be set in the form of a roller.

[0060] On this basis, in order to further improve the accuracy of cutting the edge of the cloth 300 and to meet the needs of welding and cutting the cloth 300 along an arc trajectory, the cloth 300 is welded and cut after the spring is installed to form an arc-shaped outer contour. Accordingly, the cutter assembly 60 can be set with a curved motion trajectory.

[0061] In some embodiments, the welding device 100 further includes a second displacement mechanism 32, which is connected to the cutter assembly 60 to drive the cutter assembly 60 to move laterally. In this way, the lateral movement of the cutter assembly 60 and the first welding assembly 10 can be driven by different power mechanisms, and the activities of the two can be independent of each other without affecting each other.

[0062] Exemplarily, the first displacement mechanism 30 and the second displacement mechanism 32 can both be configured to be driven by a motor or a cylinder, and the motor or the cylinder drives the crank-connecting rod mechanism, thereby driving the first welding assembly 10 or the cutter assembly 60 to move laterally.

[0063] In some embodiments, the welding device 100 further includes a second swing mechanism 102, which is connected to the cutter assembly 60 and is used to drive the cutter assembly 60 to swing. By separately setting the first swing mechanism 20 and the second swing mechanism 102, the swinging motions of the first welding assembly 10 and the cutter assembly 60 can be controlled separately, that is, the second swing mechanism 102 can be unaffected by the motion of the first swing mechanism 20, and therefore, the setting position and motion control mode of the second swing mechanism 102 can be more flexible, thereby improving the flexibility and adaptability of the setting of the second swing mechanism 102. It should be noted that, in order to enable the cutter assembly 60 to cut the edge material of the cloth 300 in time, the motion trajectory of the cutter assembly 60 can be set to be the same as the motion trajectory of the first welding assembly 10. Therefore, when the second swing mechanism 102 drives the cutter assembly 60, the second swing mechanism 102 can be controlled by the same control element as the first swing mechanism 20. Since the cutter assembly 60 is set downstream of the first welding assembly 10, there can be a phase difference between the activities of the two, that is, the movement of the cutter assembly 60 lags behind the movement of the first welding assembly 10. The second swing mechanism 102 and the first swing mechanism 20 can achieve synchronous motion control by means of electrical connection, communication connection, etc., or a certain phase difference is set between the motion control of the two, which is not limited here.

[0064] Illustratively, the first swing mechanism 20 in this embodiment can adopt the same implementation as the aforementioned embodiment, that is, the first driving member 21 drives the first transmission member 22 to rotate to achieve the swinging action of the first welding assembly 10, which is not limited here.

[0065] In some embodiments, the second swing mechanism 102 includes a sixth driving member 1021 and a second transmission member 1022. The second transmission member 1022 is formed with two eccentrically arranged rotating shafts. The sixth driving member 1021 is connected to one of the rotating shafts, and the other rotating shaft is connected to the cutter assembly 60. The sixth driving member 1021 reciprocates to drive the second rotating member 1022 to rotate, so as to drive the cutter assembly 60 to rotate. By eccentrically arranging two rotating shafts on the second transmission member 1022, when one of the rotating shafts is driven, the second transmission member 1022 can rotate, thereby driving the other rotating shaft to rotate, realizing the rotation drive of the cutter assembly 60, thereby converting the linear motion of the sixth driving member 1021 into circular motion, so that the cutter assembly 60 achieves a swinging effect.

[0066] Optionally, referring to the driving method of the first displacement mechanism 30 on the first welding assembly 10, the welding device 100 can also be provided with a third bracket 44 and a fourth bracket 45, the cutter assembly 60 is arranged on the third bracket 44, the second displacement mechanism 32 is arranged on the fourth bracket 45, the third bracket 44 and the fourth bracket 45 are connected by a second guide structure 46 for transverse sliding. Specifically, the second guide structure 46 can also adopt a slide rail and a slider, and the slide rail is arranged to extend in the transverse direction. In this way, it is possible to provide guidance for the movement of the third bracket 44, thereby improving the accuracy and movement stability of the movement trajectory of the third bracket 44 when it moves relative to the fourth bracket 45, thereby avoiding shaking or deviation of the cutter assembly 60 when it moves in the transverse direction x, improving the reliability of the cutter assembly 60 when it moves in the transverse direction x, and thus improving the effect of cutting the curved edge material on the side of the cloth 300.

[0067] Exemplarily, the first driving member 21 , the second driving member 13 , the third driving member 14 , the fourth driving member, the fifth driving member 15 and the sixth driving member 1021 may be structures such as motors and cylinders.

[0068] In some embodiments, the welding device 100 further includes a guide wheel group 50, the guide wheel group 50 includes at least two guide wheels 51, the guide wheel group 50 is arranged upstream of the first welding assembly 10 along the feeding direction of the cloth 300, and the two guide wheels 51 are used to clamp the opening of the cloth 300. The opening of the cloth 300 can be clamped by the guide wheels 51 before the cloth 300 enters the first welding assembly 10, and the opening of the cloth 300 is guided to be closed, so as to facilitate the cloth 300 to smoothly enter the first welding assembly 10 for welding. It can be understood that the two guide wheels 51 are respectively located on both sides of the opening of the cloth 300, so as to help close the two layers of cloth 300 at the opening of the cloth 300. Of course, in other examples, the guide wheels 51 may not be limited to two, for example, three or four may be set, and multiple guide wheels 51 are distributed on both sides of the opening of the cloth 300, so as to achieve the clamping effect of the cloth 300.

[0069] Optionally, the guide wheel group 50 can also be arranged downstream of the first welding component 10, so that the welded cloth 300 can be clamped. The upstream and downstream guide wheel groups 50 can clamp the cloth 300 at the same time, which can provide appropriate tensioning force to the cloth 300, avoid wrinkles on the cloth 300, and ensure that the cloth 300 has good flatness during the welding process.

[0070] Second, see Fig. 9 and Fig.10The present application also provides a pocket spring machine 200, comprising a spring coiling mechanism 201, a conveying mechanism 202, a compression mechanism 203, and the welding device 100 provided in the first aspect, wherein the spring coiling mechanism 201 is used to coil steel wire into a spring, the compression mechanism 203 is used to compress the spring, and the spring is compressed to a suitable size before being loaded into a bag, the conveying mechanism 202 is used to transfer the spring from the spring coiling mechanism 201 to the compression mechanism 203, and the welding device 100 is arranged downstream of the compression mechanism 203. In this way, after the spring is compressed to a target size and loaded into the bag, the side opening of the bag can be sutured by the welding device 100, and the suture track is adapted to the height change of the spring.

[0071] Optionally, the compression mechanism 203 can be integrated with the conveying mechanism 202, and the spring is gradually compressed to the target size during the conveying process of the conveying mechanism 202. For example, the spring coiling mechanism 201 can coil the steel wire into springs of different lengths according to design requirements, and the springs of different specifications are arranged according to design requirements to form an edge profile with a certain curve or arc shape to meet the requirements of the contour of the pocket spring product.

[0072] In some embodiments, the pocket spring machine 200 further includes a second welding assembly 204, which is disposed downstream of the first welding assembly 10 along the feeding direction, and includes a third die head 2041 and a third welding head 2042 distributed vertically in the z direction, and the third die head 2041 and the third welding head 2042 can be close to each other to clamp the fabric 300 and weld the fabric 300 in the transverse x direction to form a straight weld 304. By performing transverse x welding on the fabric 300 using the second welding assembly 204, the through fabric 300 can be separated into a plurality of independent pocket chambers 302, each of which encapsulates a spring, so that springs in adjacent positions are prevented from being strung together, thereby improving the product reliability of the pocket spring.

[0073] In some embodiments, the second welding assembly 204 can move relative to the feeding direction of the fabric 300, and the third die head 2041 and the third welding head 2042 can swing along the feeding direction of the fabric 300 when clamping the fabric 300 to pull the fabric 300 to move. By using the clamping and pulling action of the second welding assembly 204 on the fabric 300, power can be provided for feeding the fabric 300 on the premise of satisfying the transverse x welding of the fabric 300, so that the fabric 300 can be automatically transported along the feeding direction, which not only improves the degree of automation of the transportation of the fabric 300, but also avoids the need to set up an additional power structure to drive the fabric 300, thereby saving space for the pocket spring machine 200. Exemplarily, the swing of the third die head 2041 and the third welding head 2042 can be rotating along the hinge point 2043, thereby pulling the fabric 300 to move, or the third die head 2041 and the third welding head 2042 can be translated as a whole along the feeding direction of the fabric 300 to achieve the movement of the fabric 300, which is not limited here.

[0074] In some embodiments, the pocket spring machine 200 further includes a discharge mechanism 205, which is disposed downstream of the welding device 100 along the feeding direction, and includes an air duct 2051 and a fan 2052, wherein the fan 2052 is used to evacuate the air duct 2051, and the air duct 2051 is used to recycle the cut edge material 301 of the cloth 300. By providing the air duct 2051, the cut edge material 301 of the cloth 300 can be collected in time, and the edge material 301 is prevented from accumulating around the first welding assembly 10, thereby reducing the risk of the edge material 301 being entangled or involved in other components, and improving the reliability and safety of the pocket spring machine 200.

[0075] In some embodiments, the discharge mechanism 205 further includes a clamping wheel set 2053, which is disposed upstream of the air duct 2051. The clamping wheel set 2053 is used to clamp and pull the edge material 301 of the cloth 300 to be discharged from the air duct 2051. The clamping wheel set 2053 can provide guidance and power for the discharge of the edge material 301, ensuring that the edge material 301 can smoothly enter the air duct 2051.

[0076] In the description of this specification, if the reference terms "one embodiment", "some examples", "some embodiments", "illustrative embodiment", "example", "specific example", or "some examples" appear, it means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0077] The above describes the implementation methods of the present application in detail in conjunction with the accompanying drawings, but the present application is not limited to the above implementation methods. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present application.

Claims

1. A welding device, characterized in that: The welding device is used for welding the cloth fed in the longitudinal direction, and the welding device comprises: a first welding assembly for welding the fabric to join one side of the opening of the fabric together; A first swing mechanism is connected to the first welding assembly, the first swing mechanism is formed with a rotating shaft, and the first swing mechanism is used to drive the first welding assembly to rotate around the rotating shaft to change the welding trajectory; The first displacement mechanism is connected to the first swing mechanism, and the first displacement mechanism is used to drive the first swing mechanism to move laterally.

2. The welding device according to claim 1, characterized in that: The first swing mechanism includes a first driving member and a first transmission member, the first transmission member connects the first driving member and the first welding assembly, the first driving member drives the first transmission member to drive the first welding assembly to rotate, and adjusts the angle between the first welding assembly and the cloth feeding direction.

3. The welding device according to claim 2, characterized in that: The first transmission member includes a pair of gears meshing with each other, wherein one of the gears is connected to the first driving member, the axis of the other gear forms the rotating shaft, and the other gear is connected to the first welding assembly, and the first driving member drives the gears to rotate to drive the first welding assembly to rotate.

4. The welding device according to claim 1, characterized in that: The welding device also includes a first bracket and a second bracket, the first swing mechanism and the first welding assembly are arranged on the first bracket, the first displacement mechanism is arranged on the second bracket, the first bracket is connected to the second bracket in a lateral sliding manner, and the output end of the first displacement mechanism is connected to the first bracket to drive the first bracket to move in a lateral manner.

5. The welding device according to claim 1, characterized in that: The first welding assembly includes a first die head and a first welding head. The first die head and the first welding head can be close to each other to clamp the fabric. The rotation axes of the first die head and the first welding head are parallel to each other. The welding position of the first welding assembly is located on the extension line of the rotating shaft. The first die head and the first welding head rotate synchronously to weld the fabric.

6. The welding device according to claim 5, characterized in that: The first welding assembly further includes a second driving member and a third driving member that are driven synchronously, the second driving member drives the first die head to rotate, and the third driving member drives the first welding head to rotate; or The first welding assembly further includes a fourth driving member, and the fourth driving member synchronously drives the first die head and the first welding head to rotate.

7. The welding device according to claim 5, characterized in that: The first welding head includes a first working surface and a second working surface which are coaxially arranged. When the first welding head and the first die head are close to each other, the first die head abuts against the first working surface and the second working surface at the same time. The first working surface is used for welding cloth, and the second working surface is used for cutting cloth. The second working surface is arranged on the side of the first working surface away from the cloth bag.

8. The welding device according to claim 5, characterized in that: The first welding assembly also includes a fifth driving member and a flexible transmission shaft. The first die head and the first welding head can be moved away from each other to allow the fabric to enter or be taken out. Either the first die head or the first welding head is connected to the flexible transmission shaft. The flexible transmission shaft is connected to the driving member of the first die head or the second die head. The fifth driving member drives the first die head or the first welding head connected to the flexible transmission shaft to bring the first die head and the first welding head closer to each other.

9. The welding device according to claim 1, characterized in that: The first welding assembly includes a second die head and a second welding head, and the second die head and the second welding head can be close to each other in the vertical direction to clamp and weld the cloth; the welding device also includes a cutter assembly, and the cutter assembly is arranged downstream of the first welding assembly.

10. The welding device according to claim 9, characterized in that: The welding device further comprises a second displacement mechanism, which is connected to the cutter assembly to drive the cutter assembly to move laterally.

11. The welding device according to claim 10, characterized in that: The welding device further comprises a second swing mechanism, and the second swing mechanism is used for driving the cutter assembly to swing.

12. The welding device according to claim 10, characterized in that: The second swing mechanism includes a sixth driving member and a second transmission member, the second transmission member is formed with two eccentrically arranged rotating shafts, the sixth driving member is connected to one of the rotating shafts, and the other rotating shaft is connected to the cutter assembly, and the sixth driving member reciprocates to drive the second rotating member to rotate, thereby driving the cutter assembly to rotate.

13. The welding device according to claim 1, characterized in that: The welding device also includes at least one guide wheel group, which includes at least two guide wheels. The guide wheel group is arranged upstream of the first welding assembly along the cloth feeding direction, and the two guide wheels are used to clamp the opening of the cloth.

14. A pocket spring machine, characterized in that: Comprising the welding device according to any one of claims 1 to 13, the pocket spring machine further comprises: A spring coiling mechanism, used to coil the steel wire into a spring; A compression mechanism, used for compressing the spring and sending the compressed spring into the cloth bag; a transfer mechanism for transferring the spring from the coil spring mechanism to the compression mechanism; The welding device is arranged downstream of the compression mechanism.

15. The pocket spring machine according to claim 14, characterized in that: The pocket spring machine also includes a second welding assembly, which is arranged downstream of the first welding assembly along the feeding direction, and the second welding assembly includes a third die head and a third welding head distributed vertically, and the third die head and the third welding head can be close to each other to clamp the cloth and weld the cloth horizontally, and the second welding assembly can move relative to the cloth feeding direction, and the third die head and the third welding head swing along the cloth feeding direction when clamping the cloth to pull the cloth to move.

16. The pocket spring machine according to claim 15, characterized in that: The pocket spring machine also includes a discharge mechanism, which is arranged downstream of the welding device along the feeding direction. The discharge mechanism includes an air duct and a fan, the fan is used to evacuate air from the air duct, and the air duct is used to recover the cut edge materials of the cloth.

17. The pocket spring machine according to claim 16, characterized in that: The material discharging mechanism further comprises a clamping wheel group, which is arranged upstream of the air duct and is used for clamping and pulling the edge of the cloth to be discharged from the air duct.

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