Connecting device, handheld laser welding gun and laser processing equipment

Abstract

The invention relates to the technical field of laser processing equipment, and discloses a connecting device, a handheld laser welding gun and laser processing equipment. The connecting device comprises a locking assembly, a first shell and a second shell, the first shell and the second shell are rotationally connected, the first shell and the second shell can be buckled to form a mounting cavity penetrating in the first direction, the mounting cavity is used for containing an armored cable, and the first shell and / or the second shell are / is used for being connected with a welding gun shell. The locking assembly comprises a locking rod and a locking buckle, one of the first shell and the second shell is provided with the locking rod in a sliding mode, and the other one of the first shell and the second shell is provided with the locking buckle; the locking rod can be matched with the locking buckle, so that the first shell and the second shell are buckled and locked; and the locking rod can be separated from the locking buckle, so that the first shell and the second shell can be selectively opened or buckled. Disassembly can be achieved without additional connecting pieces and tools, and time and labor are saved.

Description

Technical Field

[0001] The present invention relates to the technical field of laser processing equipment, and particularly to a connecting device, a handheld laser welding gun, and a laser processing equipment. Background Art

[0002] In the prior art, the tail connection structure of a handheld laser welding gun is usually fixed by screws. During installation, the two shells of the tail connection structure of the welding gun handle are opened, and one end of the armored cable connected with the laser output head is placed into the optical path structure of the welding gun, and the two shells are fixed by a plurality of screws, so as to fix the laser output head and the armored cable in the welding gun. The problem is that when replacing or maintaining accessories such as the laser output head, optical fiber, and armored cable during the use of the handheld laser welding gun, it is necessary to unscrew the screws one by one for disassembly of the accessories, and the disassembly and assembly are rather troublesome and time-consuming and laborious. Summary of the Invention

[0003] Based on the above, the purpose of the present invention is to provide a connecting device, a handheld laser welding gun, and a laser processing equipment, which can be disassembled without additional connecting parts and tools, saving time and effort.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] A connecting device, the connecting device includes:

[0006] A first shell and a second shell that are rotatably connected, the first shell and the second shell can be buckled to form an installation cavity that penetrates along a first direction, the installation cavity is used to accommodate the armored cable, and the first shell and / or the second shell is used to connect the welding gun housing;

[0007] A locking assembly, including a locking rod and a locking buckle, among the first shell and the second shell, the locking rod is slidably arranged on one of them, and the locking buckle is arranged on the other;

[0008] The locking rod can cooperate with the locking buckle to buckle and lock the first shell and the second shell;

[0009] The locking rod can be disengaged from the locking buckle to enable the first shell and the second shell to be selectively opened or buckled.

[0010] As a preferred solution of the connecting device, a lock rod mounting hole is provided on the first shell, the locking rod slidably passes through the lock rod mounting hole, and the locking buckle is arranged on the second shell.

[0011] As a preferred embodiment of the connecting device, an avoidance groove is provided on the plane where the first housing and the second housing cooperate. The avoidance groove communicates with the lock rod mounting hole. The locking buckle is arranged on the plane where the second housing and the first housing cooperate. The locking buckle can pass through the avoidance groove and cooperate with or disengage from the locking rod.

[0012] As a preferred embodiment of the connecting device, a locking ring is circumferentially protruded on the locking rod. The locking buckle is provided with a locking groove and a notch communicating with the locking groove. The width of the notch is greater than the outer diameter of the locking rod and less than the outer diameter of the locking ring. The locking rod can enter the locking groove from the notch and can axially move to place the locking ring in the locking groove, so that the locking rod cooperates with the locking buckle.

[0013] As a preferred embodiment of the connecting device, the lock rod mounting hole includes a mounting end and a locking end. The inner diameter of the mounting end is smaller than that of the locking end. The mounting end is provided with an internal thread section. A smooth hole section is provided on one side of the internal thread section away from the locking end. One end of the locking rod is provided with an external thread section. The external thread section can be threadedly connected with the internal thread section and can slide in the smooth hole section.

[0014] As a preferred embodiment of the connecting device, the locking assembly is further provided with a reset member. One end of the reset member abuts against the end of the internal thread section away from the smooth hole section, and the other end abuts against the locking ring close to the external thread section. The reset member makes the locking rod have a tendency to move towards the end away from the internal thread section, so that the locking rod cooperates with the locking buckle.

[0015] As a preferred embodiment of the connecting device, an operating section is provided at one end of the locking rod away from the external thread section. When the locking assembly is in the locked position, at least part of the operating section protrudes from the lock rod mounting hole.

[0016] As a preferred embodiment of the connecting device, two or more locking rings are arranged at intervals along the axial direction of the locking rod. The locking buckles are arranged in one-to-one correspondence with the locking rings.

[0017] A handheld laser welding gun includes the connecting device as described above.

[0018] A laser processing device includes the connecting device as described above.

[0019] The beneficial effects of the present invention are:

[0020] In the present invention, an installation cavity is provided inside the connecting device. At the same time, the first housing and / or the second housing of the connecting device are set to be connected to the housing of the welding torch, so that the armored cable can be placed inside the installation cavity and connected to the housing of the welding torch. The connecting device is also provided with a locking assembly. The locking rod of the locking assembly can cooperate with the locking buckle to form a locking position. At this time, the cooperating locking rod and locking buckle can make the first housing and the second housing be relatively buckled and locked, which can improve the reliability of the connection between the armored cable and the housing body. The locking rod of the locking assembly can be disengaged from the locking buckle to form an unlocking position. At this time, the disengaged locking rod and locking buckle can make the first housing and the second housing be relatively opened or buckled, for replacing or maintaining accessories such as the laser output head, optical fiber, armored cable, etc., to achieve quick disassembly and assembly. Specifically, the locking assembly includes a locking rod and a locking buckle respectively arranged on the first housing and the second housing. The locking rod can be locked or unlocked with the locking buckle through sliding, so that the locking assembly can be switched between the locking position and the unlocking position. The above-mentioned connecting device can achieve quick locking and quick unlocking without additional connecting parts and tools, which is convenient for the disassembly and assembly of related devices and saves time and effort. Description of the Drawings

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required to be used in the description of the embodiments of the present invention. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the content of the embodiments of the present invention and these drawings.

[0022] Figure 1 It is a schematic diagram of the first housing and the second housing of the connecting device provided by the specific embodiment of the present invention being buckled;

[0023] Figure 2 It is a schematic diagram of a perspective view of the first housing of the connecting device provided by the specific embodiment of the present invention being opened relative to the second housing;

[0024] Figure 3 It is a schematic diagram of the locking rod of the connecting device provided by the specific embodiment of the present invention;

[0025] Figure 4 It is a half-sectional view of the locking rod of the connecting device provided by the specific embodiment of the present invention;

[0026] Figure 5 It is a schematic diagram of the first housing, the second housing and the armored cable sleeve of the connecting device provided by the specific embodiment of the present invention;

[0027] Figure 6 It is a schematic diagram of the handheld laser welding torch provided by the specific embodiment of the present invention;

[0028] Figure 7It is a schematic diagram of another perspective when the first housing of the connecting device provided by the specific embodiment of the present invention is opened relative to the second housing;

[0029] Figure 8 It is a schematic diagram of the connecting device provided by the specific embodiment of the present invention hiding the limiting rod;

[0030] Figure 9 It is a schematic diagram of the limiting rod of the connecting device provided by the specific embodiment of the present invention;

[0031] Figure 10 It is a half-sectional view of the limiting rod of the connecting device provided by the specific embodiment of the present invention;

[0032] Figure 11 It is a schematic diagram of the connecting device, the housing body and the armored cable sleeve provided by the specific embodiment of the present invention.

[0033] In the figure:

[0034] 100, housing body; 110, first housing; 120, second housing;

[0035] 200, connecting device; 210, first housing; 211, lock rod mounting hole; 2111, internal thread section; 2112, smooth hole section; 212, avoidance groove; 213, hanging ring; 220, second housing; 221, hook; 222, positioning groove; 223, connecting part; 224, limit mounting hole; 225, operation hole;

[0036] 231, locking rod; 2311, locking ring; 2312, external thread section; 232, locking buckle; 2321, locking groove; 2322, notch; 233, reset part;

[0037] 241, limiting rod; 2411, external thread connecting part; 2412, limiting part; 2413, matching part; 2414, abutting part; 2415, positioning section; 242, operation part; 2421, internal thread connecting part; 243, elastic part;

[0038] 300, armored cable sleeve. Specific Embodiment

[0039] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, in which the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions from beginning to end. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0040] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.

[0041] Unless otherwise clearly specified and defined, the terms "installed", "connected", "connected to", "fixed" shall be understood in a broad sense. For example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] In the present invention, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "above and to the right" and "on the top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "below and to the left" and "beneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0043] The technical solution of the present invention will be further described below with reference to the drawings and through specific embodiments.

[0044] Such as Figures 1-7As shown in the figure, this embodiment provides a connecting device 200. The connecting device 200 includes a locking component and a first housing 210 and a second housing 220 that are rotatably connected. The first housing 210 and the second housing 220 can be buckled to form an installation cavity penetrating along the first direction. The installation cavity is used to accommodate the armored cable, and the first housing 210 and / or the second housing 220 are used to connect to the welding torch housing; the locking component includes a locking rod 231 and a locking buckle 232. Among the first housing 210 and the second housing 220, the locking rod 231 is slidably arranged on one of them, and the locking buckle 232 is arranged on the other; the locking rod 231 can cooperate with the locking buckle 232 to buckle and lock the first housing 210 and the second housing 220; the locking rod 231 can be disengaged from the locking buckle 232 so that the first housing 210 and the second housing 220 can be selectively opened or buckled.

[0045] By providing an installation cavity in the connecting device 200 and setting the first housing 210 and / or the second housing 220 of the connecting device 200 to be connected to the welding torch housing, the armored cable can be placed in the installation cavity and connected to the welding torch housing. The connecting device 200 is also provided with a locking component. The locking rod 231 of the locking component can cooperate with the locking buckle 232 to form a locked position. At this time, the cooperating locking rod 231 and locking buckle 232 can buckle and lock the first housing 210 and the second housing 220 relatively, which can improve the connection reliability between the armored cable and the housing body 100; the locking rod 231 of the locking component can be disengaged from the locking buckle 232 to form an unlocked position. At this time, the disengaged locking rod 231 and locking buckle 232 can make the first housing 210 and the second housing 220 open or buckle relatively, for replacing or maintaining accessories such as the laser output head, optical fiber, armored cable, etc., to achieve quick disassembly and assembly. Specifically, the locking component includes a locking rod 231 and a locking buckle 232 respectively arranged on the first housing 210 and the second housing 220, and the locking rod 231 can be locked or unlocked with the locking buckle 232 through sliding, thereby realizing the conversion of the locking component between the locked position and the unlocked position. The above-mentioned connecting device 200 can achieve quick locking and quick unlocking without additional connecting parts and tools, which is convenient for the disassembly and assembly of related devices and saves time and effort.

[0046] In this embodiment, the locking rod 231 is arranged on the first housing 210. Specifically, a locking rod mounting hole 211 is provided on the first housing 210, and the locking rod 231 slidably passes through the locking rod mounting hole 211, and the locking buckle 232 is arranged on the second housing 220.

[0047] Furthermore, an avoidance groove 212 is provided on the plane where the first housing 210 mates with the second housing 220. The avoidance groove 212 communicates with the lock rod mounting hole 211. Specifically, the locking buckle 232 is disposed on the plane where the second housing 220 mates with the first housing 210. When the first housing 210 and the second housing 220 are buckled, the locking buckle 232 can pass through the avoidance groove 212 and cooperate with or disengage from the locking rod 231.

[0048] Specifically, a locking ring 2311 is circumferentially protruded on the locking rod 231. The locking buckle 232 is provided with a locking groove 2321 and a notch 2322 communicating with the locking groove 2321. The width of the notch 2322 is greater than the outer diameter of the locking rod 231 and less than the outer diameter of the locking ring 2311, so that when the first housing 210 and the second housing 220 are buckled, the locking rod 231 can enter the locking groove 2321 from the notch 2322. When the locking rod 231 is axially moved, the locking ring 2311 is placed in the locking groove 2321. It can be understood that when the locking ring 2311 is placed in the locking groove 2321, it is the position where the locking rod 231 is locked with the locking buckle 232. At this time, the locking assembly is in the locked position, and the first housing 210 and the second housing 220 are locked and cannot be opened.

[0049] Preferably, two or more locking rings 2311 are provided at intervals along the axial direction of the locking rod 231 to improve the locking reliability. It can be understood that the locking buckle 232, the avoidance groove 212 and the locking ring 2311 are provided in one-to-one correspondence, so the number of the locking buckle 232 and the avoidance groove 212 is set to be the same as that of the locking ring 2311.

[0050] Furthermore, to realize the connection between the locking rod 231 and the lock rod mounting hole 211, the lock rod mounting hole 211 is provided with an installation end and a locking end, and the inner diameter of the installation end is smaller than that of the locking end. At the same time, the installation end is provided with an internal thread section 2111, and a smooth hole section 2112 is provided on the side of the internal thread section 2111 away from the locking end. One end of the locking rod 231 is provided with an external thread section 2312. That is, during installation, the external thread section 2312 of the locking rod 231 passes through the lock rod mounting hole 211 from the locking end to the installation end, so that the external thread section 2312 can be threadedly connected with the internal thread section 2111, and the external thread section 2312 needs to be fully screwed and pass through the internal thread section 2111 so that the external thread section 2312 can slide in the smooth hole section 2112. It is worth noting that to ensure that the external thread section 2312 can slide in the smooth hole section 2112, the inner diameter of the smooth hole section 2112 is set to be greater than the outer diameter of the external thread section 2312. To prevent the limiting rod 241 from coming out of the limiting mounting hole 224, the outer diameter of the locking ring 2311 is greater than the inner diameter of the internal thread section 2111.

[0051] Preferably, the locking assembly is also provided with a reset member 233, one end of the reset member 233 abuts against one end of the internal thread segment 2111 away from the light hole segment 2112, and the other end abuts against the locking ring 2311 close to the external thread segment 2312. By providing the reset member 233, the locking rod 231 has a tendency to move toward the end away from the internal thread segment 2111, that is, the setting of the reset member 233 can make the locking ring 2311 of the locking rod 231 placed in the locking buckle 232 to ensure that the locking assembly is stably placed in the locking position. Exemplarily, the reset member 233 is set as a spring, which is sleeved on the locking rod 231 from the internal thread segment 2111 and abuts against a locking ring 2311 close to the internal thread segment 2111. In other embodiments, the spring can be replaced by an elastic and restorable component such as an airbag, or it can be replaced by a magnetic component that uses the same polar repulsion to achieve self-locking of the locking rod 231.

[0052] It is worth noting that an operating section 2313 is provided at one end of the locking rod 231 away from the external thread section 2312. When the locking assembly is placed in the locking position, the operating section 2313 is at least partially protruded from the locking rod mounting hole 211. By providing the operating section 2313 that can be protruded from the locking rod mounting hole 211, it is convenient for an operator to operate the locking rod 231 to move it axially. In a natural state, the locking assembly is placed in the locking position, the positions of the locking ring 2311 and the locking buckle 232 correspond, and the operating section 2313 is protruded from the locking rod mounting hole 211. When it is necessary to operate the locking assembly to the unlocking position, the operator drives the operating section 2313 to move the locking rod 231 axially and squeeze the reset member 233. At this time, the positions of the locking ring 2311 and the locking buckle 232 are staggered, so that when the first shell 210 and the second shell 220 are engaged, the locking rod 231 can enter the locking buckle 232 from the notch 2322. Then the operator releases the operating section 2313, the reset member 233 drives the locking rod 231 to reset, and the locking ring 2311 enters the locking groove 2321, completing the conversion of the locking assembly from the unlocking position to the locking position. At this time, the first shell 210 is engaged and locked relative to the second shell 220.

[0053] This embodiment also discloses a handheld laser welding gun, which is provided with a connecting device 200 as described in any of the above schemes. The handheld laser welding gun includes a shell body 100, that is, the above-mentioned welding gun shell, and the first shell 210 and / or the second shell 220 are connected to the shell body 100.

[0054] This embodiment also discloses a laser processing device, including a connecting device 200 as described in any of the above schemes.

[0055] Furthermore, if Figure 7As shown, exemplarily, a hanging loop 213 is provided on the first housing 210 for hanging and storing the connection device 200. A hook 221 is provided on the second housing 220 for threading the welding wire and the air pipe to guide and limit the welding wire and the air pipe. At the same time, both the hanging loop 213 and the hook 221 are rotatably arranged, so that when the hanging loop 213 and the hook 221 are not in use, the hanging loop 213 and the hook 221 can be buckled to the first housing 210 or the second housing 220, which is convenient for storage or use and ensures the neatness and beauty of the appearance.

[0056] In other embodiments, as Figures 8-11 shown, the connection device 200 further includes a limiting component, and the limiting component includes a limiting rod 241 which is slidably arranged in either the first housing 210 or the second housing 220; among the first outer shell 110 and the second outer shell 120, one is connected to the first housing 210 or the second housing 220, and the other is provided with a limiting groove, and at least a part of the limiting rod 241 can slide into the limiting groove to lock the first outer shell 110 and the second outer shell 120.

[0057] By providing a limiting component on the connection device 200 to associate the first housing 210 and the second housing 220 of the connection device 200 with the first outer shell 110 and the second outer shell 120 of the housing body 100, the housing body 100 can be opened and closed only through the connection device 200 without additionally providing connecting parts and tools, realizing the quick disassembly and assembly of the housing of the hand-held laser welding gun. Specifically, one of the first outer shell 110 and the second outer shell 120 is connected to the first housing 210 or the second housing 220, and the other is provided with a limiting groove, and the limiting rod 241 of the limiting component is slidably arranged on either the first housing 210 or the second housing 220, and the first outer shell 110 and the second outer shell 120 are locked by at least partially placing the limiting rod 241 in the limiting groove.

[0058] Regarding the rotational connection between the first housing 210 and the second housing 220, and between the first outer shell 110 and the second outer shell 120, it can be a hinge connection or a snap connection. When the two are connected by a snap connection, they can not only be opened relatively, but also be separated from each other.

[0059] In this embodiment, the second housing 220 is connected to the second outer shell 120. A limiting groove is provided on the first outer shell 110. The limiting rod 241 is slidably disposed on the second housing 220. At this time, the first outer shell 110 and the second outer shell 120 can be opened and closed independently, and at the same time, the first outer shell 110 and the second outer shell 120 can be fastened and locked through the limiting component. In other embodiments, the limiting rod 241 can also be slidably disposed on the first housing 210. At this time, the first outer shell 110 and the second outer shell 120 can be opened or closed synchronously with the first housing 210 and the second housing 220.

[0060] Specifically, to realize the connection between the second housing 220 and the second outer shell 120, a connection portion 223 is provided on the second housing 220, and the second outer shell 120 is connected to the connection portion 223. Optionally, the second outer shell 120 and the connection portion 223 are connected by bolts, which is convenient for disassembly. To realize the installation of the limiting rod 241, a limiting installation hole 224 is provided on the second housing 220, and the limiting rod 241 is slidably disposed in the limiting installation hole 224.

[0061] Further, to facilitate the sliding of the limiting rod 241, the limiting component is further provided with an operation portion 242 connected to the limiting rod 241. An operation hole 225 is provided on the second housing 220. The operation hole 225 communicates with the limiting installation hole 224. The operation portion 242 is slidably disposed in the operation hole 225 and at least partially protrudes from one end of the operation hole 225 away from the limiting installation hole 224. The operator can move the position of the limiting rod 241 by sliding the operation portion 242, thereby realizing the limitation between the housing body 100 and the connecting device 200. Exemplarily, the portion of the operation portion 242 protruding from one end of the operation hole 225 is larger than the cross-section of the operation hole 225 to have a larger operation area, which is convenient for the operator to operate.

[0062] To realize the connection between the limiting rod 241 and the operation portion 242, an external thread connection portion 2411 is provided on the limiting rod 241, and an internal thread connection portion 2421 is provided on the operation portion 242. When assembling the limiting component, the limiting rod 241 penetrates from the limiting installation hole 224, the operation portion 242 penetrates from the operation hole 225, and the external thread connection portion 2411 is threadedly connected to the internal thread connection portion 2421.

[0063] Further, the portion of the limiting rod 241 that can be placed in the limiting groove is set as the limiting portion 2412. In this embodiment, a mating portion 2413 is provided at one end of the external thread connecting portion 2411 close to the limiting portion 2412. With this setting, the external thread connecting portion 2411 and the internal thread connecting portion 2421 can be fully screwed, so that the external thread connecting portion 2411 and the internal thread connecting portion 2421 are disengaged from the threaded connection, and the operating portion 242 is located at the mating portion 2413 between the limiting portion 2412 and the external thread connecting portion 2411. Since the outer diameter of the mating portion 2413 is smaller than the inner diameter of the external thread connecting portion 2411, when the limiting rod 241 is driven to move by the operating portion 242, the internal thread connecting portion 2421 cooperates with the mating portion 2413, thus avoiding axial force on the threads between the external thread connecting portion 2411 and the internal thread connecting portion 2421, and protecting the reliability of the threaded connection between the external thread connecting portion 2411 and the internal thread connecting portion 2421.

[0064] Optionally, one end of the mating portion 2413 away from the external thread connecting portion 2411 is set as an abutting portion 2414. By providing the abutting portion 2414, when the external thread connecting portion 2411 and the internal thread connecting portion 2421 are fully screwed and just disengaged from the threaded connection, the end of the internal thread connecting portion 2421 can abut against the abutting portion 2414, that is, the width of the mating portion 2413 is adapted to the width of the internal thread connecting portion 2421, so that one end of the internal thread connecting portion 2421 of the operating portion 242 can abut against the abutting portion 2414 and the other end can abut against the external thread connecting portion 2411, avoiding axial movement between the operating portion 242 and the limiting rod 241.

[0065] Specifically, the outer diameter of the abutting portion 2414 is smaller than the outer diameter of the limiting portion 2412, so that the limiting portion 2412 can be more smoothly placed in the limiting groove.

[0066] It can be understood that the operation hole 225 is used to limit the axial movement of the limiting rod 241. In this embodiment, the sliding distance of the operating portion 242 in the operation hole 225 is not less than the length of the limiting portion 2412, that is, the operator can slide the operating portion 242 to completely move the limit to the limit mounting hole 224, avoiding interference between the limiting portion 2412 and the first housing 110 or the second housing 120 when the first housing 110 and the second housing 120 rotate relative to each other.

[0067] Preferably, the limiting assembly is also provided with an elastic member 243, one end of the elastic member 243 abuts against the inner wall of the limiting mounting hole 224, and the other end abuts against the limiting rod 241. By providing the elastic member 243, the limiting rod 241 has a tendency to move toward at least partially protruding from the limiting mounting hole 224, thereby ensuring that the limiting portion 2412 is stably located in the limiting groove, thereby ensuring the reliability of the connection between the shell body 100 and the connecting device 200.

[0068] Exemplarily, the elastic member 243 is configured as a spring, and a positioning section 2415 is provided at the end of the limiting rod 241 away from the limiting portion 2412. The outer diameter of the positioning section 2415 is smaller than the outer diameter of the limiting rod 241 and smaller than the inner diameter of the elastic member 243. The spring is sleeved on the positioning section 2415. By providing the positioning section 2415, on the one hand, it is used to abut and position the spring, and on the other hand, it provides guidance for the compression of the spring.

[0069] The use process of the above-mentioned limit assembly is as follows: in the natural state, the elastic member 243 drives the limit part 2412 to protrude from one end of the second shell 220; when the first shell 110 and the second shell 120 need to be connected or opened, the operator drives the operating part 242 to compress the elastic member 243, so that the limit rod 241 slides axially until the limit part 2412 retracts into the limit mounting hole 224; then the first shell 110 is opened or closed relative to the second shell 120 by corresponding operation, so that the limit groove of the first shell 110 corresponds to the limit mounting hole 224 or is staggered relative to the limit mounting hole 224; then the operator releases the operating part 242, and the elastic member 243 is reset, so that the limit part 2412 is placed in the limit groove or detached from the limit groove.

[0070] In other embodiments, the inner walls of the first shell 210 and the second shell 220 are both provided with positioning grooves 222, so that when the first shell 210 and the second shell 220 are buckled together, the inner wall of the installation cavity is formed with a positioning ring groove, which is provided to cooperate with the positioning ring protrusion of the armor cable sleeve 300. It can be understood that the armor cable sleeve 300 is sleeved on the outside of the armor cable to avoid damage caused by excessive bending of the part of the armor cable that cooperates with the end of the connecting device 200.

[0071] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there will be changes in the specific implementation methods and application scopes. The content of this specification should not be understood as limiting the present invention.

Claims

1. Connecting device, characterized in that, The connecting device includes: A first housing (210) and a second housing (220) that are rotatably connected. The first housing (210) and the second housing (220) can be snapped together to form an installation cavity that penetrates along a first direction. The installation cavity is used to accommodate the armored cable, and the first housing (210) and / or the second housing (220) is used to connect to the outer shell of the welding torch; A locking assembly, including a locking rod (231) and a locking buckle (232). Among the first housing (210) and the second housing (220), the locking rod (231) is slidably arranged on one of them, and the locking buckle (232) is arranged on the other; The locking rod (231) can cooperate with the locking buckle (232) to snap and lock the first housing (210) and the second housing (220); The locking rod (231) can be disengaged from the locking buckle (232) so that the first housing (210) and the second housing (220) can be selectively opened or snapped together.

2. The connecting device according to claim 1, characterized in that, A lock rod mounting hole (211) is provided on the first housing (210). The locking rod (231) slidably passes through the lock rod mounting hole (211), and the locking buckle (232) is arranged on the second housing (220).

3. The connecting device according to claim 2, characterized in that, An avoidance groove (212) is provided on the plane where the first housing (210) cooperates with the second housing (220). The avoidance groove (212) is communicated with the lock rod mounting hole (211). The locking buckle (232) is arranged on the plane where the second housing (220) cooperates with the first housing (210). The locking buckle (232) can pass through the avoidance groove (212) and cooperate or be disengaged from the locking rod (231).

4. The connecting device according to claim 2, characterized in that, A locking ring (2311) is circumferentially protruded on the locking rod (231). The locking buckle (232) is provided with a locking groove (2321) and a notch (2322) communicated with the locking groove (2321). The width of the notch (2322) is greater than the outer diameter of the locking rod (231) and less than the outer diameter of the locking ring (2311). The locking rod (231) can enter the locking groove (2321) from the notch (2322) and can axially move until the locking ring (2311) is placed in the locking groove (2321) so that the locking rod (231) cooperates with the locking buckle (232).

5. The connecting device according to claim 4, characterized in that, The lock rod mounting hole (211) includes a mounting end and a locking end. The inner diameter of the mounting end is smaller than that of the locking end. The mounting end is provided with an internal thread section (2111). A smooth hole section (2112) is provided on one side of the internal thread section (2111) away from the locking end. One end of the locking rod (231) is provided with an external thread section (2312). The external thread section (2312) can be threadedly connected to the internal thread section (2111) and can slide in the smooth hole section (2112).

6. The connecting device according to claim 5, characterized in that, The locking assembly is further provided with a reset member (233). One end of the reset member (233) abuts against the end of the internal thread section (2111) away from the light hole section (2112), and the other end abuts against the locking ring (2311) close to the external thread section (2312). The reset member (233) makes the locking rod (231) tend to move towards the end away from the internal thread section (2111), so that the locking rod (231) cooperates with the locking buckle (232).

7. The connecting device according to claim 5, characterized in that, An operation section (2313) is provided at the end of the locking rod (231) away from the external thread section (2312). When the locking assembly is in the locked position, at least a part of the operation section (2313) protrudes from the lock rod mounting hole (211).

8. The connecting device according to any one of claims 4 to 7, characterized in that, Two or more locking rings (2311) are arranged at intervals along the axial direction of the locking rod (231), and the locking buckles (232) are arranged in one-to-one correspondence with the locking rings (2311).

9. Handheld laser welding gun, characterized in that, It includes the connecting device according to any one of claims 1-8.

10. Laser processing equipment, characterized in that, It includes the connecting device according to any one of claims 1-8.

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