A welding apparatus for the production of thermal protectors

Abstract

A search revealed that this invention discloses a welding apparatus for the production of thermal protectors, relating to the field of thermal protector manufacturing technology. The apparatus includes a main component, a conveying and grinding component, and a wiping component. Before welding the contacts and bimetallic strip, this welding apparatus can efficiently grind the contact surface through the combined use of an oxide layer removal mechanism and a transmission mechanism. During grinding, the contacts can be conveyed, enabling simultaneous conveying and grinding. Furthermore, the grinding ring can be moved along the axis of the sliding roller during grinding, thereby improving grinding efficiency and ensuring thorough grinding of the contact surface. This removes the oxide layer at the welding points on the contact surface. After grinding, the wiping component wipes the contact surface to remove metal debris, preventing subsequent impact on welding strength due to metal debris.

Description

Technical Field

[0001] This invention relates to the field of thermal protector manufacturing technology, specifically to a welding apparatus for the production of thermal protectors. Background Technology

[0002] A thermal protector is an electrical safety device that automatically cuts off or restores a circuit based on temperature sensing. It is primarily used to prevent equipment from overheating and causing fires, damage, or malfunctions. Its core function is to disconnect the circuit when the temperature exceeds a preset threshold and automatically reset it once the temperature returns to normal.

[0003] During the production of thermal protectors, the metal contacts and bimetallic strip are typically soldered together. Before soldering, the metal contacts are usually exposed to air during storage, causing an oxide layer to form on their surface. During soldering, this oxide layer increases the risk of cold solder joints and prevents direct contact between the solder and the metal substrate. This results in the solder not spreading effectively to form a smooth solder joint, manifesting as granular or spherical separation of the solder.

[0004] Combining the above issues, we find that the welding equipment currently available on the market for the production of thermal protectors is difficult to avoid all of the problems mentioned above. Even if the problems can be solved, they require the use of external tools, which fails to achieve the desired effect. Therefore, we propose a welding equipment for the production of thermal protectors. Summary of the Invention

[0005] The purpose of this invention is to provide a welding apparatus for the production of thermal protectors, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a welding device for the production of thermal protectors, comprising a main body assembly, characterized in that: the main body assembly includes a handheld welding device, an L-shaped component is fixedly connected to the side end of the handheld welding device, a conveying and grinding component and an adsorption component are provided inside the L-shaped component, and a wiping component is provided on the surface of the L-shaped component;

[0007] The L-shaped component has an inlet and an outlet on its surface. The inlet is perpendicular to the horizontal plane, and the outlet is perpendicular to the inlet. A protective component is fixedly connected to the side end of the L-shaped component.

[0008] The conveying and grinding assembly includes an oxide layer removal mechanism and a transmission mechanism. The oxide layer removal mechanism is located inside the L-shaped part, and the transmission mechanism is located on the surface of the L-shaped part. The oxide layer removal mechanism and the transmission mechanism are used in conjunction.

[0009] The wiping component is located at the outlet of the L-shaped component, and the adsorption component is located directly below the inlet of the L-shaped component.

[0010] Preferably, the oxide layer removal mechanism includes a conveying roller. The surface of the L-shaped part is provided with a plurality of first rotating holes and second rotating holes. A plurality of conveying rollers are provided, and the plurality of conveying rollers are rotatably connected to the interior of the plurality of first rotating holes. A first gear is fixedly connected to one end of the conveying roller. A sliding roller is rotatably connected to each of the plurality of second rotating holes. A second gear is fixedly connected to one end of the plurality of sliding rollers, and the plurality of second gears mesh with the plurality of first gears respectively.

[0011] Preferably, the surface of the sliding roller is provided with a second sliding groove, and a collar is slidably sleeved on the surface of the sliding roller. Two grinding rings are slidably connected in the second sliding groove, and the two grinding rings are respectively fixedly connected to both sides of the collar.

[0012] Preferably, the conveying and grinding assembly further includes a worm gear, which is fixedly connected to one end of the second gear. A first fixing plate is fixedly connected to the surface of the L-shaped part, and a worm wheel is rotatably connected to one end of the first fixing plate. The worm gear and the worm wheel are used in cooperation. A push arm is fixedly connected to the surface of the collar, and a transmission arm is hinged between the worm wheel and the push arm.

[0013] Preferably, the surface of the L-shaped member is provided with a first sliding groove, and the push arm is slidably connected inside the first sliding groove.

[0014] Preferably, the transmission mechanism includes a second fixed plate and a first helical gear. The second fixed plate is fixedly connected to the surface of the L-shaped part, and a first motor is fixedly connected to the surface of the second fixed plate. Two first helical gears are provided, and the two first helical gears are respectively fixedly connected to one end of two conveying rollers. The output end of the first motor is connected to the first helical gear. An extension plate is fixedly connected to the surface of the first fixed plate, and a transmission shaft rotatably passes through the surface of the extension plate. The two ends of the transmission shaft are fixedly connected to second helical gears, and the two second helical gears mesh with the two first helical gears respectively.

[0015] Preferably, there are two of each of the second fixing plates and the first motor, and both second fixing plates are fixedly connected to the surface of the L-shaped part.

[0016] Preferably, the wiping assembly includes a third fixing plate, which is fixedly connected to the surface of the L-shaped part. A second motor is fixedly connected to the upper end of the third fixing plate. Two third rotating holes are opened on the surface of the L-shaped part. A conveying roller is rotatably connected in each of the two third rotating holes. A sprocket is fixedly connected to one end of each of the two conveying rollers. The two sprockets are connected by a chain.

[0017] Preferably, the wiping assembly further includes a storage component, the surface of which is fixedly perforated by an inlet tube, the inlet tube being fixedly connected to the interior of the L-shaped component, the lower end of which has multiple leakage holes, and the lower end of which is fixedly connected to a non-woven fabric.

[0018] Preferably, the adsorption component includes an electromagnet, and the surface of the L-shaped member is provided with an insertion groove, and the electromagnet is fixedly connected to the inside of the insertion groove.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] 1. Before welding the contacts and bimetallic strip, this invention can efficiently polish the contact surface by using an oxide layer removal mechanism and a transmission mechanism in combination. During polishing, the contacts can be conveyed, thus realizing simultaneous conveying and polishing. Furthermore, during polishing, the polishing ring can be moved along the axis of the sliding roller, thereby improving polishing efficiency and fully polishing the contact surface. This removes the oxide layer at the welding point on the contact surface, preventing the risk of poor soldering due to the presence of an oxide layer on the contact surface during subsequent welding. It also prevents the solder from blocking direct contact with the metal substrate, resulting in the solder not spreading effectively to form a smooth solder joint, causing the solder joint to separate into granular or spherical shapes.

[0021] 2. After the contacts are polished, the present invention can convey the contacts out of the L-shaped part through the wiping component. During the conveying process, the contact surface can be wiped with non-woven fabric to remove the metal debris generated during the polishing process. This allows the contacts to be quickly welded to the bimetallic strip after being brought out of the L-shaped part. Removing the metal debris from the contact surface can prevent the weld from being weak due to metal debris.

[0022] 3. In this invention, when grinding the contacts, in order to prevent the next contact from being immediately ground or wiped after grinding and wiping, and thus causing the previous contact to be ground before welding is completed, resulting in the re-formation of an oxide layer on the contact surface, an adsorption component can be set inside the L-shaped component. The adsorption component can controllably adsorb the next contact, so that the next contact is only ground and wiped when it is needed. The adsorption component can avoid grinding multiple contacts too quickly, which would cause the subsequent contacts to form an oxide layer after grinding, thus affecting the subsequent welding. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the first overall structure of the present invention;

[0024] Figure 2This is a schematic diagram of the second overall structure of the present invention;

[0025] Figure 3 This is a first partially exploded view of the present invention;

[0026] Figure 4 For the present invention Figure 3 Enlarged view of a section at point A

[0027] Figure 5 This is a first partial cross-sectional view of the present invention;

[0028] Figure 6 This is a first partial structural diagram of the present invention;

[0029] Figure 7 This is a second partially exploded view of the present invention;

[0030] Figure 8 This is a second partial structural diagram of the present invention;

[0031] Figure 9 This is a second partial cross-sectional view of the present invention.

[0032] In the diagram: 1. Main component; 101. Handheld welding device; 102. L-shaped part; 103. Protective part; 2. Conveying and grinding assembly; 21. Oxide layer removal mechanism; 2101. First rotating hole; 2102. Conveying roller; 2103. First gear; 2104. Second gear; 2105. Sliding roller; 2106. Grinding ring; 2107. Collar; 2108. Worm; 2109. Worm wheel; 2110. Transmission arm; 2111. Push arm; 2112. First sliding groove; 2113. Second sliding groove; 2114. 1. First fixed plate; 2115. Second rotating hole; 22. Transmission mechanism; 2201. Second fixed plate; 2202. First motor; 2203. First helical gear; 2204. Second helical gear; 2205. Transmission shaft; 3. Wiping assembly; 301. Third fixed plate; 302. Second motor; 303. Conveyor roller; 304. Sprocket; 305. Chain; 306. Storage component; 307. Inlet tube; 308. Non-woven fabric; 309. Third rotating hole; 4. Adsorption assembly; 401. Electromagnet; 402. Insertion slot. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Example 1: Please refer to Figures 1-9 The present invention provides a technical solution: a welding device for the production of thermal protectors, comprising a main body component 1, characterized in that: the main body component 1 includes a handheld welding device 101, an L-shaped component 102 is fixedly connected to the side end of the handheld welding device 101, a conveying and polishing component 2 and an adsorption component 4 are provided inside the L-shaped component 102, and a wiping component 3 is provided on the surface of the L-shaped component 102.

[0035] The surface of the L-shaped part 102 is provided with an inlet and an outlet. The inlet is perpendicular to the horizontal plane, and the outlet is perpendicular to the inlet. A protective part 103 is fixedly connected to the side end of the L-shaped part 102.

[0036] The conveying and grinding assembly 2 includes an oxide layer removal mechanism 21 and a transmission mechanism 22. The oxide layer removal mechanism 21 is disposed inside the L-shaped part 102, and the transmission mechanism 22 is disposed on the surface of the L-shaped part 102. The oxide layer removal mechanism 21 and the transmission mechanism 22 are used in cooperation.

[0037] The wiping component 3 is located at the outlet of the L-shaped component 102, and the adsorption component 4 is located directly below the inlet of the L-shaped component 102.

[0038] The oxide layer removal mechanism 21 includes a conveying roller 2102. The surface of the L-shaped part 102 is provided with a plurality of first rotating holes 2101 and second rotating holes 2115. A plurality of conveying rollers 2102 are provided, and the plurality of conveying rollers 2102 are rotatably connected to the interior of the plurality of first rotating holes 2101 respectively. A first gear 2103 is fixedly connected to one end of the conveying roller 2102. A sliding roller 2105 is rotatably connected to each of the plurality of second rotating holes 2115. A second gear 2104 is fixedly connected to one end of the plurality of sliding rollers 2105, and the plurality of second gears 2104 mesh with the plurality of first gears 2103 respectively.

[0039] The surface of the sliding roller 2105 is provided with a second sliding groove 2113, and a collar 2107 is slidably sleeved on the surface of the sliding roller 2105. Two grinding rings 2106 are slidably connected in the second sliding groove 2113, and the two grinding rings 2106 are respectively fixedly connected to both sides of the collar 2107.

[0040] The surface of the L-shaped part 102 is provided with a first sliding groove 2112, and the push arm 2111 is slidably connected to the inside of the first sliding groove 2112.

[0041] The transmission mechanism 22 includes a second fixed plate 2201 and a first helical gear 2203. The second fixed plate 2201 is fixedly connected to the surface of the L-shaped part 102. A first motor 2202 is fixedly connected to the surface of the second fixed plate 2201. Two first helical gears 2203 are provided, and the two first helical gears 2203 are respectively fixedly connected to one end of the two conveying rollers 2102. The output end of the first motor 2202 is connected to the first helical gear 2203. An extension plate is fixedly connected to the surface of the first fixed plate 2114. A transmission shaft 2205 is rotatably passed through the surface of the extension plate. Two second helical gears 2204 are fixedly connected to both ends of the transmission shaft 2205. The two second helical gears 2204 mesh with the two first helical gears 2203 respectively.

[0042] Two second fixing plates 2201 and two first motors 2202 are provided, and the two second fixing plates 2201 are fixedly connected to the surface of the L-shaped part 102.

[0043] The specific implementation of this embodiment is as follows: When grinding the contacts, multiple contacts can be stacked at the entrance of the L-shaped component 102. This layered stacking facilitates contact storage and allows for quick input of contacts during subsequent grinding. During grinding, multiple conveying rollers 2102 are used to move the contacts. Multiple sliding rollers 2105 are used, and a grinding ring 2106 is slidably connected within the second sliding groove 2113. Rotating the sliding rollers 2105 causes the grinding ring 2106 to rotate, thereby achieving grinding of the contact surface. In practical use, a single conveying roller 2102 and sliding roller 2105 can be considered as a unit, which can achieve grinding of the contacts. The contact advancement and grinding operations are performed by setting multiple units inside the L-shaped component 102, thereby achieving efficient grinding and transport of the contacts. During grinding and transport, three units can be set on the L-shaped component 102: one directly below the entrance of the L-shaped component 102, and the other two in the middle. Two additional units are symmetrically positioned above the two units in the middle. This allows for grinding of both sides of the contacts and efficient transport. During transport and grinding, the first gear 2103 and the second gear 2104 mesh, and the number of teeth on the second gear 2104 is half that of the first gear 2103. At this time, the first gear... The rapid rotation of 2103 allows the contact point to continue moving towards the exit of the L-shaped part 102 during grinding. During grinding, a collar 2107 is fitted onto the sliding roller 2105. The rotation of the second gear 2104 drives the rotation of the worm gear 2108, which in turn drives the worm wheel 2109. Since the push arm 2111 and the worm wheel 2109 are hinged to a transmission arm 2110, the transmission arm 2110 drives the push arm 2111 to move along the axis of the sliding roller 2105. This allows the grinding ring 2106 to grind the contact point from side to side, resulting in a more comprehensive grinding of the contact surface and complete removal of the oxide layer. During grinding, to achieve efficient transmission of the four units in the middle of the L-shaped part 102, a first helical gear 2203 can be connected to the surfaces of two obliquely symmetrical first gears 2103. Through the cooperation of a second helical gear 2204 and a transmission shaft 2205, the transmission of the two first helical gears 2203 can be achieved. Furthermore, a first motor 2202 can drive a single first helical gear 2203 to rotate, thereby driving the two obliquely symmetrical first gears 2103 to rotate. Since the two first gears 2103 mesh with each other between the upper and lower units, the first motor 2202 can simultaneously drive all four units to operate, thus enabling efficient grinding and conveying of the contacts.When driving the unit directly below the inlet of the L-shaped component 102, since there are two first motors 2202, the output of the other first motor 2202 can be connected to the first gear 2103 of that unit to achieve driving.

[0044] Example 2: Please refer to Figures 1-9 The present invention provides a technical solution: the wiping assembly 3 includes a third fixing plate 301, the third fixing plate 301 is fixedly connected to the surface of the L-shaped part 102, the upper end of the third fixing plate 301 is fixedly connected to a second motor 302, the surface of the L-shaped part 102 is provided with two third rotating holes 309, each of the two third rotating holes 309 is rotatably connected to a conveying roller 303, one end of each of the two conveying rollers 303 is fixedly connected to a sprocket 304, and the two sprockets 304 are connected by a chain 305.

[0045] The wiping assembly 3 also includes a storage component 306, with an inlet tube 307 fixedly passing through the surface of the storage component 306. The inlet tube 307 is fixedly connected to the interior of the L-shaped component 102. The lower end of the storage component 306 has multiple leakage holes, and a non-woven fabric 308 is fixedly connected to the lower end of the storage component 306.

[0046] The specific implementation of this embodiment is as follows: After the contact surface is polished, metal debris will be present on the contact surface. In order not to affect the subsequent welding operation, the metal debris can be removed by the wiping component 3. In use, the second motor 302 drives the sprocket 304 to rotate. Through the transmission of the chain 305, the two conveying rollers 303 can move in the same direction, thereby conveying the contact. During the conveying, anhydrous ethanol can be injected into the storage component 306 through the inlet pipe 307. Since the lower end of the storage component 306 has multiple leakage holes and the lower end of the storage component 306 is wrapped with non-woven fabric 308, the anhydrous ethanol in the storage component 306 can wet the non-woven fabric 308. At this time, by contacting the non-woven fabric 308 with the contact, the metal debris generated by polishing on the contact surface can be wiped and removed, so that there will be no metal debris on the contact surface during subsequent welding, thus not affecting the welding effect.

[0047] Example 3: Please refer to Figures 1-9 The present invention provides a technical solution: the adsorption component 4 includes an electromagnet 401, and the surface of the L-shaped part 102 is provided with an insertion groove 402, and the electromagnet 401 is fixedly connected to the inside of the insertion groove 402.

[0048] Specifically, the electromagnet 401 is a device that uses electric current to generate a magnetic field. Its core working principle is based on the mutual conversion between electricity and magnetism. A magnetic field is generated around the current-carrying wire, and the coil makes the magnetic field directions superimpose to form a magnetic field distribution similar to that of a bar magnet.

[0049] The specific implementation of this embodiment is as follows: In order to enable grinding and conveying operations on a single contact point and to prevent the next contact point from being ground and conveyed immediately after the previous contact point before the previous contact point has been ground, conveyed, and welded, an insertion groove 402 can be opened on the L-shaped part 102, and an electromagnet 401 can be installed inside the insertion groove 402. The electromagnet 401 can attract the contact point. In use, when the first contact point is being ground and conveyed, when the first contact point is completely separated from the second contact point, the second contact point will come into contact with the conveying roller 2102. In order to prevent the second contact point from moving, the electromagnet 401 can be energized, so that the electromagnet 401 can attract the second contact point, so that it will not move due to the rotation of the conveying roller 2102, and thus it will immediately follow the first contact point in the grinding and conveying operation.

[0050] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0051] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A welding apparatus for producing thermal protectors, comprising a main body assembly (1), characterized in that: The main component (1) includes a handheld welding device (101), an L-shaped component (102) is fixedly connected to the side end of the handheld welding device (101), a conveying and polishing component (2) and an adsorption component (4) are provided inside the L-shaped component (102), and a wiping component (3) is provided on the surface of the L-shaped component (102). The L-shaped component (102) has an inlet and an outlet on its surface. The inlet is perpendicular to the horizontal plane, and the outlet is perpendicular to the inlet. A protective component (103) is fixedly connected to the side end of the L-shaped component (102). The conveying and polishing assembly (2) includes an oxide layer removal mechanism (21) and a transmission mechanism (22). The oxide layer removal mechanism (21) is disposed inside the L-shaped part (102), and the transmission mechanism (22) is disposed on the surface of the L-shaped part (102). The oxide layer removal mechanism (21) and the transmission mechanism (22) are used in conjunction. The wiping component (3) is located at the outlet of the L-shaped component (102), and the adsorption component (4) is located directly below the inlet of the L-shaped component (102). The oxide layer removal mechanism (21) includes a conveying roller (2102). The surface of the L-shaped part (102) is provided with a plurality of first rotating holes (2101) and second rotating holes (2115). A plurality of conveying rollers (2102) are provided, and the plurality of conveying rollers (2102) are rotatably connected to the interior of the plurality of first rotating holes (2101). A first gear (2103) is fixedly connected to one end of the conveying roller (2102). A sliding roller (2105) is rotatably connected to the interior of the plurality of second rotating holes (2115). A second gear (2104) is fixedly connected to one end of the plurality of sliding rollers (2105), and the plurality of second gears (2104) mesh with the plurality of first gears (2103) respectively. The surface of the sliding roller (2105) is provided with a second sliding groove (2113), and a collar (2107) is slidably sleeved on the surface of the sliding roller (2105). Two grinding rings (2106) are slidably connected in the second sliding groove (2113), and the two grinding rings (2106) are respectively fixedly connected to both sides of the collar (2107). The conveying and grinding assembly (2) also includes a worm (2108), which is fixedly connected to one end of the second gear (2104). A first fixing plate (2114) is fixedly connected to the surface of the L-shaped part (102). A worm wheel (2109) is rotatably connected to one end of the first fixing plate (2114). The worm (2108) and the worm wheel (2109) are used in cooperation. A push arm (2111) is fixedly connected to the surface of the collar (2107). A transmission arm (2110) is hinged between the worm wheel (2109) and the push arm (2111).

2. The welding apparatus for producing thermal protectors according to claim 1, characterized in that: The surface of the L-shaped part (102) is provided with a first sliding groove (2112), and the push arm (2111) is slidably connected inside the first sliding groove (2112).

3. The welding apparatus for producing thermal protectors according to claim 1, characterized in that: The transmission mechanism (22) includes a second fixed plate (2201) and a first helical gear (2203). The second fixed plate (2201) is fixedly connected to the surface of the L-shaped part (102). A first motor (2202) is fixedly connected to the surface of the second fixed plate (2201). There are two first helical gears (2203), and the two first helical gears (2203) are respectively fixedly connected to one end of the two conveying rollers (2102). The output end of the first motor (2202) is connected to the first helical gear (2203). An extension plate is fixedly connected to the surface of the first fixed plate (2114). A transmission shaft (2205) is rotatably passed through the surface of the extension plate. The two ends of the transmission shaft (2205) are fixedly connected to second helical gears (2204). The two second helical gears (2204) mesh with the two first helical gears (2203) respectively.

4. A welding apparatus for producing thermal protectors according to claim 3, characterized in that: There are two of each of the second fixing plate (2201) and the first motor (2202), and both of the second fixing plates (2201) are fixedly connected to the surface of the L-shaped part (102).

5. A welding apparatus for producing thermal protectors according to claim 1, characterized in that: The wiping assembly (3) includes a third fixing plate (301), which is fixedly connected to the surface of the L-shaped part (102). A second motor (302) is fixedly connected to the upper end of the third fixing plate (301). Two third rotating holes (309) are opened on the surface of the L-shaped part (102). A conveying roller (303) is rotatably connected in each of the two third rotating holes (309). A sprocket (304) is fixedly connected to one end of each of the two conveying rollers (303). The two sprockets (304) are connected by a chain (305).

6. A welding apparatus for producing thermal protectors according to claim 5, characterized in that: The wiping assembly (3) also includes a storage component (306), the surface of which is fixedly perforated by an inlet tube (307), the inlet tube (307) being fixedly connected to the interior of the L-shaped component (102), the lower end of the storage component (306) having multiple leakage holes, and the lower end of the storage component (306) being fixedly connected to a non-woven fabric (308).

7. A welding apparatus for producing thermal protectors according to claim 1, characterized in that: The adsorption component (4) includes an electromagnet (401), and the surface of the L-shaped part (102) is provided with an insertion groove (402). The electromagnet (401) is fixedly connected to the inside of the insertion groove (402).

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