A welding device and bed net assembly

Abstract

The application discloses a welding device and a bed net combination equipment, the welding device comprises a welding cutter assembly, a welding head assembly and a limiting assembly, the welding cutter assembly comprises a welding cutter and a first mounting seat, one end of the welding cutter is connected to the first mounting seat, and the welding cutter extends along a vertical direction parallel to the vertical direction of springs in a pocketed spring string; the welding head assembly comprises a welding head, a second mounting seat and a second elastic member, the welding head extends along a vertical direction, the welding head is hinged to the second mounting seat, the hinge shaft of the welding head extends along a horizontal direction parallel to the arrangement direction of the pocketed spring string, and the second elastic member acts on the welding head and the second mounting seat respectively; the limiting assembly is arranged near the upper and lower ends of the welding cutter, the pocketed spring string is arranged between the upper and lower limiting assemblies, and the limiting assembly is used for limiting the upper end face and the lower end face of the pocketed spring string; when the welding head and the welding cutter are close to each other and weld the pocketed spring string, the second elastic member applies an elastic force to the welding head, so that the welding head and the welding cutter are respectively attached to the surface of the cloth bag of the pocketed spring string.

Description

Technical Field

[0001] This application relates to the field of pocket spring string or mattress manufacturing technology, and in particular to a welding device and bed net assembly equipment. Background Technology

[0002] In the production of bagged spring strings or their assembly into bed nets, ultrasonic welding is often used to weld multiple layers of non-woven fabric together. Ultrasonic welding involves transmitting the mechanical vibration energy of ultrasonic frequencies through a welding head to the joint between the materials. The high-frequency vibration energy is converted into heat energy through friction, locally melting the material. Applying pressure then bonds the multiple layers together instantaneously. However, in practical applications, due to the long weld seam and installation errors of the welding head and blade, the welding head and blade cannot make uniform contact when pressing the materials, resulting in uneven weld strength and welding quality problems. Furthermore, because the ultrasonic welding head is relatively large, it can easily interfere with the limiting structure of the spring strings when welding those with smaller waist diameters. Summary of the Invention

[0003] To solve at least one of the above-mentioned technical problems, this application provides a welding device and a bed mesh assembly, and the technical solution adopted is as follows.

[0004] The bed mesh assembly equipment provided in this application includes a welding device.

[0005] The welding apparatus provided in this application includes a welding knife assembly, a welding head assembly, and a limiting assembly. The welding knife assembly includes a welding knife and a first mounting base. One end of the welding knife is connected to the first mounting base, and the welding knife extends vertically parallel to the upright direction of the springs in the bag spring string. The welding head assembly includes a welding head, a second mounting base, and a second elastic element. The welding head extends vertically and is hinged to the second mounting base. The hinge axis of the welding head extends laterally parallel to the arrangement direction of the bag spring string. The second elastic element acts on both the welding head and the second mounting base. The limiting assembly is provided near both the upper and lower ends of the welding knife. The bag spring string is placed between the upper and lower limiting assemblies. The limiting assemblies are used to restrict the upper and lower end faces of the bag spring string. When the welding head and the welding knife approach each other and weld the bag spring string, the second elastic element applies an elastic force to the welding head, so that the welding head and the welding knife respectively adhere to the surface of the bag of the bag spring string.

[0006] In some embodiments of this application, the welding knife assembly includes a first elastic element, one end of the welding knife is hinged to the first mounting base, the hinge axis of the welding knife extends laterally, the first elastic element acts on the welding knife and the first mounting base respectively, and the first elastic element is provided on at least one side of the hinge axis between the welding knife and the first mounting base.

[0007] In some embodiments of this application, the second elastic element is provided on both the upper and lower sides of the hinge shaft between the welding head and the second mounting base.

[0008] In some embodiments of this application, the welding head is disposed on the second mounting base via a floating connector, the floating connector is rotatably connected to the second mounting base via a rotating shaft, and the upper and lower sides of the rotating shaft of the floating connector are respectively provided with second elastic members, which respectively abut against the floating connector and the second mounting base.

[0009] In some embodiments of this application, the welding knife assemblies are configured as at least two and arranged side by side in the lateral direction, and the welding head assembly is movable in the lateral direction so that the welding head assembly is paired with different welding knife assemblies respectively.

[0010] In some embodiments of this application, the limiting component includes a deformable limiting structure, and the limiting structure is provided on at least one side of the welding knife. When the welding head feeds toward the welding knife, the side of the welding head presses against the limiting structure and the limiting structure tilts and deforms to avoid the welding head.

[0011] In some embodiments of this application, the limiting structure has a notch on the side facing the welding head so that the limiting structure can elastically deform.

[0012] In some embodiments of this application, the limiting structure is provided on both sides of the welding knife, and the spacing between the limiting structures on both sides is adjustable in the lateral direction.

[0013] In some embodiments of this application, the vertical spacing of the limiting components at the upper and lower ends of the welding knife is adjustable.

[0014] The embodiments of this application have at least the following beneficial effects: when the welding blade and welding head approach and press against the surface of the bag of the pocket spring string, the welding head can rotate on the second mounting base to adjust the angle of the extrusion surface and can achieve floating adjustment by utilizing the elastic force of the second elastic element, thereby ensuring a tight fit and uniform contact between the extrusion surfaces of the welding head and welding blade, so as to make the weld uniform. This application can be widely applied in the field of pocket spring string or mattress manufacturing technology. Attached Figure Description

[0015] The aspects and advantages described and / or added to the embodiments of this application will become apparent and readily understood in conjunction with the following drawings. It should be noted that the embodiments illustrated in the following drawings are exemplary and are used only to explain this application, and should not be construed as limiting this application.

[0016] Figure 1 This is a structural diagram of the welding device.

[0017] Figure 2 This is a structural diagram of the welding head assembly, welding knife assembly, and limiting assembly.

[0018] Figure 3 This is a structural diagram of the welding head assembly, welding knife assembly, first guide rail, second guide rail, and limiting assembly.

[0019] Reference numerals: 100, welding knife assembly; 110, welding knife; 120, first mounting base; 130, first elastic element; 140, first guide rail; 200, welding head assembly; 210, welding head; 220, second mounting base; 230, second elastic element; 240, floating connector; 250, second guide rail; 300, limiting assembly; 310, limiting structure; 311, notch; 410, feed driver; 420, crank; 430, third elastic element. Detailed Implementation

[0020] The following is in conjunction with the appendix Figure 1 To be continued Figure 3 The embodiments of this application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0021] In the description of this application, it should be understood that the use of terms such as "center," "middle," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" to indicate orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings is solely for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Features defined with "first" and "second" are used to distinguish feature names and do not have special meanings. Furthermore, features defined with "first" and "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "multiple" means two or more.

[0022] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0023] This application relates to a bed net assembly device, which includes a welding device for welding parallel pocket spring strings together to form a bed net. Specifically, the welding device uses an ultrasonic welding process to weld the fabric bags of two parallel pocket spring strings together.

[0024] The other components and operation of the bed mesh combination equipment have been described in the relevant technology for those skilled in the art, and will not be described in detail here. The structure of the welding device will be introduced below.

[0025] This application relates to a welding apparatus, which includes a welding knife assembly 100 and a welding head assembly 200. The welding knife assembly 100 includes a welding knife 110, and the welding head assembly 200 includes a welding head 210. The welding head 210 and the welding knife 110 are brought close to each other to weld together parallel strings of bagged springs.

[0026] The welding knife assembly 100 includes a first mounting base 120, and one end of the welding knife 110 is connected to the first mounting base 120. Referring to the attached drawings, the welding knife 110 extends vertically parallel to the upright direction of the springs in the bagged spring string.

[0027] The welding head assembly 200 includes a second mounting base 220 and a second elastic element 230. The welding head 210 is disposed on the second mounting base 220, and the second elastic element 230 acts on both the welding head 210 and the second mounting base 220, allowing the position of the welding head 210 on the second mounting base 220 to be floated and adjusted. When the welding head 210 and the welding blade 110 approach each other and weld the bag spring string, the second elastic element 230 applies an elastic force to the welding head 210, thereby adjusting the fit between the extrusion surfaces of the welding head 210 and the welding blade 110, ensuring that the extrusion surface of the welding head 210 fits against the surface of the bag of the bag spring string.

[0028] Specifically, the welding head 210 is hinged to the second mounting base 220. Referring to the attached drawings, the side of the welding head 210 facing the welding knife 110 has a pressing surface, and the other side of the welding head 210 facing away from the pressing surface is hinged to the second mounting base 220. The hinge axis of the welding head 210 extends laterally parallel to the direction of the bag spring string arrangement. When the welding head 210 and the welding knife 110 approach each other, the welding head 210 can rotate at a small angle with the hinge point between the welding head 210 and the second mounting base 220 as the center to adjust the inclination of the pressing surface of the welding head 210, thereby adjusting the fit between the pressing surfaces of the welding head 210 and the welding knife 110. Under the elastic action of the second elastic member 230, the pressing surfaces of the welding head 210 and the welding knife 110 can remain in contact.

[0029] Referring to the attached diagram, when the bagged spring strings are arranged side-by-side to form a bed net, the springs are in an upright state. Therefore, the welding blade 110 and the welding head 210 have upright extrusion surfaces, and the welding blade 110 and the welding head 210 approach each other in the horizontal direction to complete the welding. Furthermore, under the action of the second elastic element 230, the welding head 210 and the welding blade 110 can respectively adhere to the surface of the bag of the bagged spring string, so that the extrusion surfaces of the welding head 210 and the welding blade 110 are in uniform contact and adhered.

[0030] Furthermore, the welding knife assembly 100 includes a first elastic element 130, which acts on both the welding knife 110 and the first mounting base 120, allowing the position of the welding knife 110 on the first mounting base 120 to be floated and adjusted. When the welding head 210 and the welding knife 110 approach each other and weld the bag spring string, the first elastic element 130 applies an elastic force to the welding knife 110, thereby adjusting the fit between the extrusion surfaces of the welding knife 110 and the welding head 210, ensuring that the extrusion surface of the welding knife 110 fits against the surface of the bag of the bag spring string.

[0031] In one embodiment, the upper or lower end of the welding blade 110 is hinged to the first mounting base 120. The hinge axis of the welding blade 110 extends laterally. Referring to the attached drawings, one end of the welding blade 110 where the extrusion surface is located is hinged to the first mounting base 120 via a pivot. When the welding head 210 and the welding blade 110 approach each other, the welding blade 110 can rotate at a small angle with the hinge point between the welding blade 110 and the first mounting base 120 as the center. The extrusion surface of the welding blade 110 moves closer to or further away from the bag spring string, and the inclination of the extrusion surface of the welding blade 110 can be adjusted, thereby adjusting the fit between the extrusion surfaces of the welding blade 110 and the welding head 210.

[0032] It is understandable that during the process of the welding head 210 and the welding knife 110 approaching each other, the welding knife 110 can rotate to adjust its position, and the first elastic element 130 provides a reverse elastic force to the welding knife 110, thereby maintaining the contact of the extrusion surfaces between the welding knife 110 and the welding head 210.

[0033] In some examples, referring to the accompanying drawings, first elastic elements 130 are provided on both sides of the hinge axis between the welding blade 110 and the first mounting base 120. The first elastic elements 130 generate elastic potential energy under pressure. Referring to the accompanying drawings, the first elastic elements 130 are disposed in the first mounting base 120, with one end abutting against the side of the welding blade 110 where the extrusion surface is located, and the other end abutting against the inner wall of the first mounting base 120. Providing first elastic elements 130 on both sides of the hinge point of the welding blade 110 ensures that the floating of the welding blade 110 is balanced and stable.

[0034] In some alternative examples, a first elastic element 130 is provided on one side of the hinge axis between the welding blade 110 and the first mounting base 120. Specifically, the first elastic element 130 is provided on the side closer to the end of the hinge axis, or on the other side away from the end of the hinge axis, with the hinge axis of the welding blade 110 as the boundary.

[0035] As an alternative implementation, a first elastic element 130 is provided on the other side of the welding knife 110 extrusion surface. When the welding head 210 and the welding knife 110 approach each other, the extrusion surface of the welding knife 110 is subjected to pressure from the welding head 210, and the first elastic element 130 applies elastic pressure to the welding knife 110 on the other side of the welding knife 110 to achieve the floating of the welding knife 110.

[0036] In one embodiment, second elastic elements 230 are provided on both the upper and lower sides of the hinge shaft between the welding head 210 and the second mounting base 220. Furthermore, the hinge point between the welding head 210 and the second mounting base 220 is located at the midline of the extrusion surface of the welding head 210. Therefore, with the hinge point of the welding head 210 as the center, the welding head 210 can rotate up and down at small angles, and when the welding head 210 rotates upwards or downwards, it can float via the corresponding second elastic elements 230. On the other hand, under the elastic action of the two second elastic elements 230, after the welding head 210 moves away from the welding blade 110, the welding head 210 can automatically reset.

[0037] Referring to the attached drawings, the welding head 210 is mounted on the second mounting base 220 via a floating connector 240. The floating connector 240 is rotatably connected to the second mounting base 220 via a rotating shaft. The welding head 210 is positioned on one side of the floating connector 240, and the second elastic member 230 abuts against the other side of the floating connector 240. Furthermore, second elastic members 230 are respectively provided on the upper and lower sides of the rotating shaft of the floating connector 240. The second elastic members 230 abut against the floating connector 240 and the second mounting base 220 respectively, thereby achieving the elastic effect of the second elastic members 230 on the welding head 210.

[0038] In one embodiment, the welding apparatus includes a feed drive assembly, and a second mounting base 220 is connected to the feed drive assembly. It is understood that the feed drive assembly drives the welding head 210 toward the welding blade 110.

[0039] Furthermore, a third elastic element 430 is provided at the connection between the feed drive assembly and the second mounting base 220. The third elastic element 430 generates elastic potential energy when compressed, and applies elastic force to the feed drive assembly and the second mounting base 220 respectively, so that the welding head 210 has a pre-tightening pressure on the welding knife 110. The pre-tightening pressure of the welding head 210 on the welding knife 110 can be adjusted by adjusting the pressure of the third elastic element 430.

[0040] In some examples, the feed drive assembly includes a feed driver 410, a crank 420, and a guide rail. A second mounting base 220 is slidably mounted on the guide rail via a slider. One end of the crank 420 is hinged to the shaft of the feed driver 410, and the other end is hinged to the second mounting base 220. The feed driver 410 drives the second mounting base 220 and the welding head 210 to move along the guide rail via the crank 420, thereby moving the welding head 210 closer to or further away from the welding knife 110. Furthermore, the crank 420 is telescopic, and a third elastic element 430 is configured as a spring and sleeved on the crank 420. When the feed driver 410 pushes the second mounting base 220 via the crank 420, the crank 420 retracts, and the third elastic element 430 is compressed, generating an elastic force. When the welding head 210 is in contact with the surface of the cloth bag, the welding head 210 generates a pre-tightening pressure on the welding knife 110.

[0041] In some examples, the feed drive assembly pneumatically actuates the second mounting base 220 and the welding head 210, in which case the third elastic element 430 is fitted onto the push rod of the feed drive assembly.

[0042] In one embodiment, at least two welding knife assemblies 100 are provided, and each welding knife assembly 100 is arranged side by side in the lateral direction. The welding head assembly 200 is movable in the lateral direction so that the welding head assembly 200 is paired with different welding knife assemblies 100 respectively, thereby welding to form welds at different positions of the bag spring string.

[0043] Specifically, the welding apparatus includes a second guide rail 250 extending laterally, and a welding head assembly 200 slidably disposed on the second guide rail 250. Further, at least two welding head assemblies 200 are provided to weld multiple locations simultaneously, improving efficiency. It is understood that each welding head assembly 200 is movable.

[0044] In some examples, each welding blade assembly 100 is movable to adjust the spacing between the welding blade assemblies 100, thereby accommodating a bag spring string with springs of different diameters. Specifically, the welding apparatus includes a first guide rail 140 extending laterally, on which the welding blade assemblies 100 are slidably disposed.

[0045] Referring to the attached drawings, the welding device includes a limiting component 300. The limiting components 300 are arranged at both the upper and lower ends near the welding knife 110. When the welding device welds the bag spring string, the bag spring string is placed between the upper and lower limiting components 300. The distance between the upper and lower limiting components 300 is equal to or slightly less than the height of the spring string. The limiting components 300 are used to limit the upper and lower end faces of the bag spring string so that the springs in the bag spring string remain in an upright state.

[0046] In some examples, the vertical spacing of the limiting components 300 at the upper and lower ends of the welding knife 110 is adjustable to accommodate bag spring strings of different heights.

[0047] In some examples, the limiting component 300 is slidably positioned on the first guide rail 140 to adjust the lateral position of the limiting component 300.

[0048] In one implementation, the limiting component 300 includes a limiting structure 310. The limiting structure 310 is made of a flexible material, such as a polyurethane board, PTFE board, or silicone board. Referring to the attached drawings, limiting structures 310 are provided on both sides of the welding blade 110. During the feeding process of the welding head 210 towards the welding blade 110, the welding head 210 moves between the limiting structures 310 on both sides of the welding blade 110, and the two sides of the welding head 210 respectively press against the limiting structures on both sides of the welding blade 110. On the one hand, the limiting structure 310 limits the position of the bag spring string; on the other hand, when the welding head 210 feeds towards the welding blade 110, the side of the welding head 210 can press against the limiting structure 310 to tilt and deform, thereby avoiding the welding head 210.

[0049] Referring to the attached diagram, the limiting structure 310 is configured as a support plate or support rod. A notch 311 is provided on the side of the limiting structure 310 facing the welding head 210 to facilitate elastic deformation. Specifically, the notch 311 is V-shaped. It can be understood that during the feeding process, the side of the welding head 210 contacts the limiting structure 310. As the welding head 210 gradually feeds, the notch 311 of the limiting structure 310 gradually closes, thereby achieving elastic deformation of the limiting structure 310 and allowing it to avoid contact with the welding head 210.

[0050] Furthermore, the spacing of the limiting structures 310 on both sides of the welding blade 110 is adjustable in the lateral direction to accommodate bag spring strings with springs of different diameters. It is understood that, considering the elastic deformation of the limiting structures 310 to avoid the welding head 210, even if the spacing of the limiting structures 310 on both sides of the welding blade 110 is less than the thickness of the welding head 210, the welding device can weld bag spring strings of various sizes without replacing the welding head 210 by utilizing the elastic deformation of the limiting structures 310.

[0051] As an alternative implementation, a limiting structure 310 is provided on one side of the welding blade 110.

[0052] In the description of this specification, the use of terms such as "an embodiment," "some examples," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples" indicates that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0053] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application.

[0054] In the description of this application, the presence of a comma ("、") in the patent title indicates an "and" relationship, not an "or" relationship. For example, if the patent title is "A and B", it means that the content claimed in this application is: a technical solution with the subject matter title A and a technical solution with the subject matter title B.

Claims

1. A welding apparatus, characterized in that: include A welding knife assembly includes a welding knife, a first mounting base, and a first elastic element. One end of the welding knife is connected to the first mounting base. The welding knife extends vertically parallel to the upright direction of the springs in the bag spring string. One end of the welding knife is hinged to the first mounting base. The hinge axis of the welding knife extends laterally. The first elastic element acts on both the welding knife and the first mounting base. At least one side of the hinge axis between the welding knife and the first mounting base is provided with the first elastic element. A welding head assembly includes a welding head, a second mounting base, and a second elastic element. The welding head extends vertically and is hinged to the second mounting base. The hinge axis of the welding head extends laterally parallel to the arrangement direction of the bag spring string. The second elastic element acts on both the welding head and the second mounting base. The welding head and the second mounting base are provided with second elastic elements on both the upper and lower sides of the hinge axis. The welding head is mounted on the second mounting base via a floating connector. The floating connector is rotatably connected to the second mounting base via a rotating shaft. The second elastic element is provided on both the upper and lower sides of the rotating shaft of the floating connector, and the second elastic element abuts against the floating connector and the second mounting base respectively. The limiting components are provided at both the upper and lower ends near the welding knife. The bag spring string is placed between the upper and lower limiting components. The limiting components are used to limit the upper and lower ends of the bag spring string. When the welding head and the welding knife approach each other and weld the bag spring string, the second elastic element applies an elastic force to the welding head so that the welding head and the welding knife respectively adhere to the surface of the bag of the bag spring string.

2. The welding apparatus according to claim 1, characterized in that: The welding knife assembly is configured as at least two and arranged side by side in the lateral direction, and the welding head assembly is movable in the lateral direction so that the welding head assembly is paired with different welding knife assemblies respectively.

3. The welding apparatus according to claim 1, characterized in that: The limiting component includes a deformable limiting structure, and the limiting structure is provided on at least one side of the welding knife. When the welding head feeds toward the welding knife, the side of the welding head presses against the limiting structure and the limiting structure tilts and deforms to avoid the welding head.

4. The welding apparatus according to claim 3, characterized in that: The limiting structure has a notch on the side facing the welding head so that the limiting structure can be elastically deformed.

5. The welding apparatus according to claim 3 or 4, characterized in that: The welding knife is provided with limiting structures on both sides, and the spacing between the limiting structures on both sides is adjustable in the lateral direction.

6. The welding apparatus according to claim 1, 3, or 4, characterized in that: The vertical spacing of the limiting components at the upper and lower ends of the welding knife is adjustable.

7. A bed-and-net combination device, characterized in that: Includes the welding apparatus as described in any one of claims 1 to 6.

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