Contactable electromagnetic welding head

Abstract

The utility model provides a contactable electromagnetic welding head. The contactable electromagnetic welding head comprises a welding head assembly and a protection assembly covering the periphery of a coil in the welding head assembly. The protection assembly comprises a first protection cover and a second protection cover which are detachably connected, and the first protection cover detachably covers the peripheral side of the coil; the second protective cover is detachably connected to the lower portion of the first protective cover, and a protective space used for containing the coil is formed in the second protective cover. In the welding process, the protection assembly can prevent the coil from making direct contact with a high-temperature to-be-welded part, good protection can be provided for the coil, and the service life of a welding head is prolonged; the first protection cover and the second protection cover are detachably connected, when the second protection cover is abraded and needs to be replaced due to the fact that the second protection cover makes contact with the to-be-welded part frequently, only the second protection cover needs to be detached, the whole protection assembly does not need to be detached completely, the maintenance difficulty is small, and the maintenance cost is low.

Description

Technical Field

[0001] The utility model relates to the technical field of electromagnetic welding, in particular to a contact type electromagnetic welding head. Background Art

[0002] Electromagnetic welding technology is a method of welding by using the principle of electromagnetic induction to generate high-frequency alternating current. Electromagnetic induction welding mainly involves passing high-frequency current into the coil, and using the high-frequency current to generate a high-frequency alternating magnetic field to achieve automatic heating of the object to be welded, thereby realizing the welding process. Compared with traditional welding methods, electromagnetic welding technology has the advantages of high efficiency, no need for external pressure, and no pollution. Electromagnetic welding technology is widely used in photovoltaic module equipment manufacturing, metal manufacturing, automobile manufacturing, aerospace and other fields.

[0003] Taking the photovoltaic module equipment manufacturing field as an example, the welding of photovoltaic module junction boxes is mainly completed by electromagnetic induction welding. In the prior art, the coil of the welding head is usually exposed on the outside of the equipment. During welding, the coil needs to be as close to the surface of the welding object as possible. If it touches the equipment, the equipment will become conductive and the welding coil will be easily damaged.

[0004] Therefore, how to solve the above-mentioned deficiencies in the prior art has become a topic to be studied and solved in the present invention. Summary of the invention

[0005] The utility model aims to provide a contact type electromagnetic welding head.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a contact electromagnetic welding head, including a welding head assembly and a protective assembly covering the outer periphery of the coil in the welding head assembly; the protective assembly includes a first protective cover and a second protective cover, the first protective cover is detachably covered on the peripheral side of the coil, the second protective cover is detachably connected to the bottom of the first protective cover, and the second protective cover has a protective space for accommodating the coil.

[0007] According to a further technical solution, the first protective cover comprises a pair of mutually matching clamping parts, each of the clamping parts has a matching surface, and the two matching surfaces are fitted and connected.

[0008] According to a further technical solution, each of the clamping parts is provided with two groups of paired inclined grooves on the corresponding mating surface. When the two clamping parts are in contact with each other, the multiple inclined grooves on each clamping part correspond to form multiple through grooves, and a connecting piece passes through the through grooves to connect the two clamping parts.

[0009] According to a further technical solution, the through slots are arranged in pairs and the through slots arranged in pairs are not parallel, and the connecting member is a reed with a "V"-shaped structure, and two ends of a reed respectively pass through the two through slots arranged in pairs.

[0010] According to a further technical solution, the two mating surfaces are positioned by a plug-in combination structure; the plug-in combination structure includes a groove and a convex rib opened along the length direction of the welding head assembly, one of the groove and the convex rib is arranged on the first mating surface, and the other is arranged on the second mating surface.

[0011] According to a further technical solution, the first protective cover and the second protective cover are threadedly connected.

[0012] According to a further technical solution, the coil comprises an annular coil which is wound in a spiral shape, wherein the annular coil comprises an annular area, and a magnetic core is arranged in the annular area.

[0013] According to a further technical solution, a sleeve is provided between the outer periphery of the magnetic core and the annular coil.

[0014] A further technical solution also includes two copper tubes, which are respectively covered at both ends of the coil; each copper tube is connected to a terminal, which is connected to a high-frequency current; and two mutually cooperating clamping parts are clamped on the outer surfaces of the two copper tubes.

[0015] The working principle and advantages of this utility model are as follows:

[0016] 1. The protection component is arranged around the outer periphery of the welding head component. During the welding process, the coil included in the welding head component can be prevented from directly contacting with the high-temperature welded workpiece, which can provide good protection for the coil and thus extend the service life of the welding head component;

[0017] 2. The protective component can also prevent the flux used in welding (such as welding rosin) from falling on the surface of the coil, especially on the inner side of the annular coil in the coil, which is convenient for cleaning and maintenance of the welding joint;

[0018] 3. Since the protective component can directly contact the workpiece to be welded, the technicians do not need to deliberately control the distance between the welding head and the workpiece to be welded during welding, which is convenient for the technicians to operate and improves the accuracy of the welding position;

[0019] 4. During welding, the second protective cover often contacts the workpiece to be welded, and problems of wear and tear may occur during long-term use. Since the second protective cover is detachably connected to the first protective cover, it is only necessary to remove the second protective cover from the first protective cover, and maintenance is easy. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] AttachedFigure 1 An exploded view of an embodiment of the utility model;

[0021] Attached Figure 2 It is a plan view of an embodiment of the utility model;

[0022] Attached Figure 3 For attachment Figure 2 Section AA in;

[0023] Attached Figure 4 For attachment Figure 2 Section BB in ;

[0024] Attached Figure 5 For attachment Figure 4 A schematic diagram of the second protective cover and the structure it protects is shown in the partial schematic diagram C in FIG.

[0025] In the above attached figure:

[0026] 1-welding head assembly; 2-protection assembly; 3-magnetic core; 4-sleeve;

[0027] 11-coil; 12-copper tube; 13-connection terminal;

[0028] 111-toroidal coil;

[0029] 21-first protective cover; 22-second protective cover;

[0030] 211-clamping portion; 212-matching surface; 213-connecting piece;

[0031] 2111-limiting groove; through groove-2112;

[0032] 2121-groove; 2122-convex rib. DETAILED DESCRIPTION

[0033] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0034] Embodiment: The present invention will be clearly described below with diagrams and detailed descriptions. After understanding the embodiments of the present invention, any person skilled in the art can make changes and modifications based on the techniques taught by the present invention without departing from the spirit and scope of the present invention.

[0035] The terms used herein are only for describing specific embodiments and are not intended to be limiting of the present invention. Singular forms such as "a", "this", "here", "this" and "the" as used herein also include plural forms.

[0036] The terms “first”, “second”, etc. used in this document do not specifically refer to an order or sequence, nor are they used to limit the present case. They are only used to distinguish components or operations described with the same technical terms.

[0037] As used herein, “connected” or “positioned” may refer to two or more components or devices being in direct physical contact with each other, or being in indirect physical contact with each other, or may refer to two or more components or devices operating or moving with each other.

[0038] The terms “include,” “including,” “have,” etc. used in this document are open-ended terms, meaning including but not limited to.

[0039] The terms used in this document generally have the ordinary meaning of each term used in this field, in the context of the case and in the specific context, unless otherwise noted. Certain terms used to describe the present invention will be discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art in describing the present invention.

[0040] The terms "front", "back", "up", "down", "left", "right", etc. used in this article are all directional terms. In this case, they are only used to illustrate the positional relationship between the various structures, and are not used to limit the protection plan of this case and the specific direction during actual implementation.

[0041] See attached Figure 1 ~Attached Figure 2 As shown, an embodiment of the utility model provides a contact electromagnetic welding head, including a welding head assembly 1 and a protective assembly 2 covering the outer periphery of a coil 11 in the welding head assembly 1. In this embodiment, the coil 11 has a spirally wound annular coil 111, and both ends of the annular coil 111 are respectively covered with copper tubes 12, and each copper tube 12 is connected to a terminal 13, and the terminal 13 is connected to a high-frequency current. At this time, a high-frequency alternating magnetic field is generated at the annular coil 111. When the annular coil 111 is close to a workpiece to be welded, the workpiece to be welded will automatically heat up, thereby realizing the welding process, that is, in this embodiment, the annular coil 111 connected to the high-frequency current is a heating welding zone.

[0042] In the existing electromagnetic welding process, the coil 11 is in an exposed state, and when welding is performed close to the workpiece to be welded, on the one hand, it is difficult to manually control the coil 11 to prevent it from contacting the workpiece to be welded. Since the workpiece to be welded is in a high temperature state during the welding process, the coil 11 is easily damaged. On the other hand, the operator needs to control the distance between the coil 11 and the workpiece to be welded while paying attention to the welding position, which has a certain degree of operating difficulty. Therefore, the operator has low accuracy in controlling the welding position.

[0043] During the welding process, if the welding head touches the workpiece to be welded, due to the action of the protection component 2, the protection component 2 comes into contact with the workpiece to be welded, so that the coil 11 is isolated from the workpiece to be welded, thereby preventing the coil 11 from directly contacting the high-temperature workpiece to be welded, thereby providing a good protection effect for the coil 11; further, since direct contact between the coil 11 and the workpiece to be welded is avoided, the flux (such as welding rosin) can also be prevented from entering the annular coil 111, especially from entering the inner side of the annular coil 111, thereby facilitating the maintenance of the coil 11; further, the protection component 2 can directly contact the workpiece to be welded, making it easier for the operator to control the welding position and improve the welding accuracy.

[0044] See also Figure 3~Figure 4 The protection component 2 includes a first protection cover 21 and a second protection cover 22. The first protection cover 21 is located above the second protection cover 22. The first protection cover 21 is used to protect the bottom end portion of the two copper tubes 12 and the linear coil 11, and the second protection cover 22 is used to protect the annular coil 111.

[0045] In this embodiment, the first protective cover 21 is detachably covered on the circumferential side of the coil 11, specifically, it is detachably fixed on the two copper tubes 12, and the second protective cover 22 is detachably connected to the bottom of the first protective cover 21; optionally, the first protective cover 21 is spaced apart from the coil 11 to prevent the coil 11 from contacting the first protective cover 21 and causing deformation of the coil 11.

[0046] The detachable connection between the first protective cover 21 and the two copper tubes 12 facilitates disassembly and assembly when the welding head assembly 1 needs to be repaired or cleaned. The detachable connection between the second protective cover 22 and the first protective cover 21 facilitates the repair or cleaning of the annular coil 111, or when the second protective cover 22 is often in contact with the welded part during operation, causing the second protective cover 22 to be worn and damaged, and the second protective cover 22 needs to be replaced. It is only necessary to remove the second protective cover 22 without disassembling the entire protective assembly 2, which reduces the maintenance difficulty and cost, and saves operation steps and operation time.

[0047] Specifically, the first protective cover 21 includes a pair of mutually cooperating clamping parts 211. In the present embodiment, each clamping part 211 is provided with a limiting groove 2111 for accommodating the copper tube 12. The number of the limiting grooves 2111 matches the number of the copper tubes 12, that is, the number of the limiting grooves 2111 is two; optionally, two limiting grooves 2111 can be respectively provided on the two clamping parts 211; alternatively, each clamping part 211 has half of each limiting groove 2111. When the two clamping parts 211 are fitted together, each limiting groove 2111 can be formed by the two clamping parts 211.

[0048] Each clamping portion 211 has a mating surface 212, and the two mating surfaces 212 are fitted and connected to each other, which can be used for matching and positioning during mating. Optionally, the connection method can be a detachable connection such as a snap connection, a sliding limit connection or a threaded connection.

[0049] Preferably, the connection method between the two clamping parts 211 in this embodiment is: the two clamping parts 211 are each provided with two groups of paired inclined grooves on the corresponding mating surfaces 212, and the two groups of inclined grooves are respectively arranged on both sides of the limiting groove 2111. When the two clamping parts 211 are fitted together, the multiple inclined grooves on each clamping part 211 correspond to form multiple through grooves 2112, and a connecting piece 213 passes through the through groove 2112 to connect the two clamping parts 211 and fix the two clamping parts 211 on the copper tube 12.

[0050] Preferably, in this embodiment, the two mating surfaces 212 are positioned by a plug-in combination structure, such as Figure 1 As shown, the plug-in assembly structure includes a groove 2121 and a convex rib 2122 opened along the length direction of the welding head assembly 1, one of the groove 2121 and the convex rib 2122 is provided on the first mating surface, and the other is provided on the second mating surface. For example, if the first mating surface is provided with a groove 2121, then the second mating surface is provided with a convex rib 2122 corresponding to the groove. It can be understood that the first mating surface is one of the two mating surfaces 212, and the second mating surface is the other of the two mating surfaces 212.

[0051] Specifically, the connecting member 213 is a spring having a first end and a second end. The first end and the second end of each spring are respectively inserted into two through grooves 2112 arranged in pairs. The tension of the spring causes the two clamping parts 211 to be tightly connected. When the welding head assembly 1 needs to be repaired and maintained, only the two springs need to be pulled out. The structure is simple and the operation is convenient.

[0052] In this embodiment, the first protective cover 21 and the second protective cover 22 are connected by threaded connection.

[0053] Please see attached Figure 5 In this embodiment, there is an annular area at the center of the annular coil 111, and a magnetic core 3 is arranged in the annular area. The magnetic core 3 is used to generate an alternating magnetic field parallel to the axial direction of the magnetic core 3 according to the alternating current. During the welding process, the accuracy of the direction of the magnetic field can be ensured, thereby improving the efficiency of electromagnetic welding and the accuracy of the welding position.

[0054] Preferably, the axial direction of the magnetic core 3 is parallel to the axial direction of the annular region.

[0055] Furthermore, a sleeve 4 is provided between the outer periphery of the magnetic core 3 and the annular coil 111 to prevent the magnetic core 3 from directly contacting the annular coil 111 .

[0056] The working process of the existing utility model is as follows:

[0057] The coil 11 is connected to a high-frequency current, and a high-frequency alternating magnetic field is generated at the annular coil 111. At this time, the annular coil 111 is a heating welding area;

[0058] A protective component 2 is disposed on the periphery of the welding head component 1, specifically, a first protective cover 21 for protecting the bottom end portion of the two copper tubes 12 and the linear coil 11, and a second protective cover 11 for protecting the annular coil 111. When the technician moves the welding head component 1, during the welding process, if the welding head touches the workpiece to be welded, due to the action of the protective component 2, the protective component 2 comes into contact with the workpiece to be welded, so that the coil 11 is isolated from the workpiece to be welded;

[0059] The workpiece to be welded automatically heats up due to the high-frequency alternating magnetic field, thus achieving welding.

[0060] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with the technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A contact electromagnetic welding head, characterized in that: include: A welding head assembly (1) and a protective assembly (2) covering the outer periphery of a coil (11) in the welding head assembly (1); The protection assembly (2) comprises a first protection cover (21) and a second protection cover (22); the first protection cover (21) is detachably arranged around the coil (11); the second protection cover (22) is detachably connected to the bottom of the first protection cover (21), and the second protection cover (22) has a protection space for accommodating the coil (11).

2. The contactable electromagnetic welding head according to claim 1, characterized in that: The first protective cover (21) comprises a pair of mutually matching clamping parts (211), each of the clamping parts (211) has a matching surface (212), and the two matching surfaces (212) are fitted and connected.

3. The contactable electromagnetic welding head according to claim 2, characterized in that: Each of the clamping portions (211) is provided with two groups of inclined grooves arranged in pairs on the corresponding matching surface (212), and the two groups of inclined grooves are located on both sides of the coil (11); When the two clamping portions (211) are attached to each other, the multiple oblique grooves on each clamping portion (211) form a plurality of through grooves (2112) correspondingly, and a connecting member (213) passes through the through grooves (2112) to connect the two clamping portions (211).

4. The contactable electromagnetic welding head according to claim 3, characterized in that: The through slots (2112) are arranged in pairs and the through slots (2112) arranged in pairs are not parallel, and the connecting member (213) is a reed with a "V"-shaped structure, and the two ends of a reed respectively pass through the two through slots (2112) arranged in pairs.

5. The contactable electromagnetic welding head according to claim 2, characterized in that: Positioning is achieved between the two mating surfaces (212) through a plug-in combined structure; The plug-in combination structure comprises a groove (2121) and a convex rib (2122) which are provided along the length direction of the welding head assembly (1); one of the groove (2121) and the convex rib (2122) is provided on a first mating surface, and the other is provided on a second mating surface.

6. The contactable electromagnetic welding head according to claim 1, characterized in that: include: The first protective cover (21) and the second protective cover (22) are threadedly connected.

7. The contactable electromagnetic welding head according to claim 1, characterized in that: The coil (11) comprises a spirally wound annular coil (111), wherein the annular coil (111) comprises an annular region, and a magnetic core (3) is arranged in the annular region.

8. The contactable electromagnetic welding head according to claim 7, characterized in that: A sleeve (4) is provided between the outer periphery of the magnetic core (3) and the annular coil (111), and the sleeve (4) is fixedly arranged inside the second protective cover (22).

9. The contactable electromagnetic welding head according to claim 2, characterized in that: It also includes two copper tubes (12), the two copper tubes (12) are respectively covered at two ends of the coil (11); Each of the copper tubes (12) is connected to a wiring terminal (13), and the wiring terminal (13) is connected to a high-frequency current; The two mutually matching clamping portions (211) are clamped on the outer surfaces of the two copper tubes (12) through matching.

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