Welding device for explosion-proof camera production

Abstract

The application relates to the technical field of welding devices, and provides a welding device for explosion-proof camera production, which comprises a bottom rack and a laser welding device, the laser welding device is arranged at the top of the bottom rack, further comprises lifting supports, two lifting supports are fixedly connected to the top of the bottom rack, a lower mounting cylinder is fixedly connected to the top of the bottom rack, an upper mounting cylinder is fixedly connected between the tops of the two lifting supports, the center points of the lower mounting cylinder and the upper mounting cylinder correspond to each other, shell clamping structures are arranged in the lower mounting cylinder and the upper mounting cylinder, and the shell clamping structure located on the upside is longitudinally and slidingly arranged on one of the lifting supports. Through the technical scheme, the technical problem that welding operation is inconvenient due to the irregular shape of the explosion-proof camera shell when the explosion-proof camera shell is welded in the prior art is solved.

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of welding equipment technology, and more specifically, to a welding equipment for the production of explosion-proof cameras. Background Technology

[0002] Explosion-proof cameras belong to the category of explosion-proof monitoring products. They are a cross-product of the explosion-proof materials industry and the monitoring industry. Explosion-proof cameras are specifically designed for production sites of highly dangerous flammable materials, as well as many explosive sites where conventional camera equipment cannot be used. Therefore, explosion-proof cameras, which are produced using special explosion-proof materials, were born.

[0003] The biggest difference between explosion-proof cameras and ordinary cameras is that explosion-proof cameras use specialized explosion-proof metal shells and intrinsically safe circuit technology, allowing them to be used in potentially hazardous locations. During the production process, after the various components of the explosion-proof camera shell are formed, the main components are welded together due to the extremely high airtightness requirements of the shell. The most common equipment used for welding explosion-proof cameras is laser welding equipment.

[0004] During the welding process of explosion-proof camera housings, the first thing to note is that because the housings of explosion-proof cameras are not regularly shaped, the distance between the working end of the laser welding equipment and the welding area of ​​the housing must be closely monitored when welding different areas of the housing. In addition, the exhaust gases generated during the welding process also need to be treated. Again, because the location of the welding area is not fixed, it is difficult to target and extract the exhaust gases generated in the welding area. Summary of the Invention

[0005] To overcome the above-mentioned defects, embodiments of the present invention provide a welding device for the production of explosion-proof cameras, which solves the technical problem that the welding operation is inconvenient due to the irregular shape of the explosion-proof camera housing in the prior art.

[0006] This invention provides a welding apparatus for the production of explosion-proof cameras, comprising a bottom frame and a laser welding device, wherein the laser welding device is disposed on top of the bottom frame, and further comprising:

[0007] The lifting bracket has two lifting brackets fixedly connected to the top of the bottom frame. A lower mounting cylinder is fixedly connected to the top of the bottom frame, and an upper mounting cylinder is fixedly connected between the tops of the two lifting brackets. The center points of the lower and upper mounting cylinders correspond to each other. Both the lower and upper mounting cylinders are provided with shell clamping structures. The upper shell clamping structure is longitudinally slidably mounted on one of the lifting brackets. After clamping the camera shells, the two shell clamping structures are brought close together, and the two shell clamping structures can drive the two camera shells to move longitudinally after being attached, so that the welding area of ​​the camera shells always corresponds to the laser welding equipment.

[0008] The laser welding equipment is equipped with a welding auxiliary structure on its top for detecting welding distance and welding quality.

[0009] A ring frame is longitudinally slidably mounted on another lifting bracket. The laser welding equipment is mounted on the ring frame. An adjustable exhaust gas suction structure is provided inside the ring frame to extract exhaust gas generated at different welding positions on the camera housing.

[0010] To clamp the camera housing to be welded, the housing clamping structure further includes a rotating cylinder and a fixing structure. The rotating cylinder is movably disposed within the upper mounting cylinder or the lower mounting cylinder. Multiple sliding slots are arranged around the inner circumference of the rotating cylinder, and threaded sockets are slidably connected to the sliding slots. A moving structure is provided between the multiple threaded sockets and the rotating cylinder. The moving structure is used to move the threaded sockets closer to or further away from the center point of the rotating cylinder. A magnetic positioning structure is provided between the rotating cylinder, the moving structure, and the multiple sliding slots. A clamping block for clamping the camera housing is installed inside the threaded socket. The fixing structure is provided between the rotating cylinder and the upper mounting cylinder or the lower mounting cylinder.

[0011] To further secure the rotating cylinder when it is not in operation, the fixing structure includes a rotating ring and an insertion rod. The rotating ring is fixedly connected to the rotating cylinder, and a receiving cylinder is slidably connected to the rotating ring. An electromagnet is installed on the receiving cylinder, and the insertion rod is slidably installed inside the receiving cylinder. The insertion rod is magnetically connected to the electromagnet, and the insertion rod is fixedly connected to the upper mounting cylinder or the lower mounting cylinder via a mounting truss.

[0012] To further adjust the position of the annular frame and the upper rotating cylinder, both lifting brackets are equipped with screw lifting structures. One of the lifting brackets has an annular sliding member slidably installed inside. The upper rotating cylinder is rotatably sleeved on the annular sliding member. The annular sliding member is in transmission cooperation with the corresponding screw lifting structure. The annular frame is in transmission cooperation with the other lifting bracket and the screw lifting structure.

[0013] To drive the two rotating cylinders to rotate synchronously, each of the two rotating cylinders is equipped with a gearbox. A drive shaft is rotatably connected to one side of the bottom frame, and the drive shaft passes through the two gearboxes. The drive shaft is in drive engagement with the gearbox located on the lower side, and a meshing sleeve is fixedly connected through the gearbox located on the upper side. The meshing sleeve is engaged with the top of the drive shaft, which is used to drive the two rotating cylinders to rotate synchronously.

[0014] To further inspect the welding distance and welding quality, the welding auxiliary structure includes a distance measuring sensor and an image capturing device. The distance measuring sensor and the image capturing device are respectively disposed on the top sides of the laser welding equipment, and the working ends of the distance measuring sensor and the image capturing device are both facing the welding area of ​​the camera housing.

[0015] To further extract exhaust gases generated at different welding positions on the camera housing, the exhaust gas suction structure includes an arc-shaped suction cylinder, a curved suction pipe, a first electric cylinder, a suction pipe, and an exhaust valve pipe. Two arc-shaped suction cylinders are provided, each positioned on one side of the laser welding equipment. Each arc-shaped suction cylinder is divided into a stretching section and an offset section. The stretching section is located within the annular frame via a connecting seat. The curved suction pipe is connected to the offset section. The first electric cylinder is located on both sides of the laser welding equipment, with its output end connected to the offset section. Multiple suction pipes are connected to the inner arc surfaces of both the stretching and offset sections. The length of each suction pipe decreases sequentially from the stretching section to the offset section. An exhaust valve pipe is connected to both stretching sections, and the exhaust valve pipe passes through the connecting seat and the annular frame.

[0016] In order to drive the lower rotating cylinder to rise and fall, a second electric cylinder is further provided on the mounting truss located on the lower side, and the output end of the second electric cylinder is rotatably connected to the bottom of the lower rotating cylinder.

[0017] The beneficial effects of the embodiments of the present invention are as follows:

[0018] 1. In this invention, when welding two camera housings, the camera housings are first placed into two rotating cylinders and clamped and fixed by a housing clamping structure. Then, one of the lead screw lifting structures drives the upper rotating cylinder to descend, causing the welding area between the two camera housings to fit together. During subsequent welding operations, the lead screw lifting structure and the second electric cylinder work together to allow the camera housings to align sequentially with the output height of the laser welding equipment along the curved welding area on the camera housing during the welding process, thus completing the welding operation. Based on the welding path of the welding area, the distance sensor can first determine the actual distance between the welding area and the laser welding equipment under the irregular shape of the camera housing, and then adjust the laser welding focus of the subsequent laser welding equipment. After laser welding of the welding area, an image capturing device can magnify the actual welding image of the welding area, facilitating the operator's actual judgment of the welding situation.

[0019] 2. In this invention, when extracting the exhaust gas generated in the welding area during the welding process of the camera housing, the position of the arc-shaped suction cylinder is adjusted so that the curved suction pipe is close to the welding focal point of the welding area. By detecting changes in the welding area through a distance sensor, the distance between the curved suction pipe and the welding area is adjusted accordingly to ensure that exhaust gas generated in different welding areas is extracted. Furthermore, multiple suction pipes of different lengths are used to correspond to the subsequent movement path of the camera housing welding area, so that the subsequently diffused exhaust gas is also extracted in a targeted manner. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of the present invention and these drawings without any creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a partial cross-sectional structural schematic diagram of the present invention;

[0023] Figure 3 This is a partial cross-sectional structural diagram of the lower mounting cylinder, rotating cylinder, accommodating cylinder, and threaded socket in this invention;

[0024] Figure 4 For the present invention Figure 3 A magnified structural diagram of point A in the middle;

[0025] Figure 5 This is a partial cross-sectional structural diagram of the upper mounting cylinder, rotating cylinder, gearbox, and transmission screw in this invention.

[0026] Figure 6 This is a partial cross-sectional structural diagram showing the combination of the annular frame, laser welding equipment, arc-shaped suction cylinder, and curved suction pipe in this invention.

[0027] Figure 7 This is a partial cross-sectional structural diagram showing the cooperation of the first electric cylinder, the air extraction pipeline, the arc-shaped air extraction cylinder, and the curved air intake pipeline in this invention.

[0028] Figure 8 This is a schematic diagram of the structure of the threaded socket, multi-slot socket, rotating shaft and arc-shaped clamping piece in this invention.

[0029] Figure 9 This is a partial cross-sectional structural diagram showing the cooperation of the multi-slot socket, arc-shaped clamping piece, rotating bushing, and abutment block in this invention;

[0030] Figure 10 This is a partial cross-sectional structural schematic diagram of the arc-shaped electromagnet, mounting ring, ferroelectric block, and annular sliding groove in this invention.

[0031] Figure 11 For the present invention Figure 10 A magnified structural diagram of point B in the middle.

[0032] In the diagram: 1. Bottom frame; 2. Laser welding equipment; 3. Lifting support; 4. Lower mounting cylinder; 5. Upper mounting cylinder; 6. Annular frame; 7. Rotating cylinder; 8. Sliding slot frame; 9. Threaded socket; 10. Clamping block; 11. Rotating ring; 12. Receiving cylinder; 13. Electromagnet; 14. Insertion rod; 15. Mounting truss; 16. Annular sliding component; 17. Gearbox; 18. Drive shaft; 19. Engaging sleeve; 20. Distance sensor; 21. Image capturing equipment; 22. Arc-shaped suction cylinder; 23. Tension section; 24. Offset section; 25. Bending suction pipe; 26. First electric... 27. Pumping cylinder; 28. Exhaust valve pipe; 29. ​​Second electric cylinder; 30. Threaded disc; 31. First drive motor; 32. Transmission screw; 33. Second drive motor; 34. Drive gear; 35. Drive gear; 36. Third drive motor; 37. Multi-slot socket; 38. Moving slide; 39. Moving block; 40. Push screw; 41. Extension rod; 42. Rotating shaft; 43. Arc-shaped clamping piece; 44. Rotating bushing; 45. Abutment block; 46. Arc-shaped solenoid; 47. Mounting ring; 48. Ferrous block; 49. Annular slide; 50. Sliding seat; 51. Solenoid seat. Detailed Implementation

[0033] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it.

[0034] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0035] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0036] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0037] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0038] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0039] Example 1, as Figures 1 to 7As shown, this invention discloses a welding device for the production of explosion-proof cameras, including a bottom frame 1 and a laser welding device 2. The laser welding device 2 is located on the top of the bottom frame 1. The laser welding device 2 is a technical device used in the prior art for welding the metal shell of explosion-proof cameras. Because it is necessary to ensure the subsequent shell strength of the explosion-proof camera, the prior art uses the laser welding device 2 to weld the shell of the explosion-proof camera. This is because the laser emitted by the laser welding device 2 during the welding process will only target a small area on the welding area of ​​the camera shell for rapid welding, which can not only ensure welding accuracy, but also effectively reduce the problem of heat diffusion on the camera shell during the welding process, thus ensuring the overall strength of the camera shell. A workbench for operating multiple electrical devices in this invention is also provided on one side of the bottom frame 1.

[0040] It also includes lifting brackets 3. Two lifting brackets 3 are fixedly connected to the top of the bottom frame 1. A lower mounting cylinder 4 is fixedly connected to the top of the bottom frame 1. An upper mounting cylinder 5 is fixedly connected between the tops of the two lifting brackets 3. The center points of the lower mounting cylinder 4 and the upper mounting cylinder 5 correspond to each other. Both the lower mounting cylinder 4 and the upper mounting cylinder 5 are provided with a shell clamping structure. The shell clamping structure includes a rotating cylinder 7 and a fixed structure. The rotating cylinder 7 is movably disposed within the upper mounting cylinder 5 or the lower mounting cylinder 4. Multiple sliding grooves 8 are provided on the inner circumference of the rotating cylinder 7. Threaded sockets 9 are slidably connected to the sliding grooves 8. A moving structure is provided between the multiple threaded sockets 9 and the rotating cylinder 7. The moving structure is used to drive the threaded sockets 9 to move closer to or away from the center point of the rotating cylinder 7. A magnetic positioning structure is provided between the body 7, the moving structure and the multiple sliding slots 8. The moving structure includes a threaded disc 30 and a first drive motor 31. The threaded disc 30 is rotatably connected inside the rotating cylinder 7. Multiple threaded sockets 9 are threadedly connected to the threaded disc 30. The first drive motor 31 is provided inside the rotating cylinder 7. The output end of the first drive motor 31 is fixedly connected to the threaded disc 30. A conical feeding platform is provided on the threaded disc 30. When welding two camera housings that need to be welded, the two unwelded camera housings are first moved to a position that fits against the conical feeding platform. Then, the first drive motor 31 is started to drive the threaded disc 30 to rotate, so that the multiple threaded sockets 9 slide in their respective sliding slots 8. Then, the clamping block 10 clamps the camera housing.

[0041] like Figures 1 to 5 and Figures 10 to 11As shown, the magnetic positioning structure includes an arc-shaped electromagnet 46, a mounting ring 47 fixedly connected inside the rotating cylinder 7, multiple iron blocks 48 fixedly connected circumferentially on the mounting ring 47, an arc-shaped electromagnet 46 on the sliding groove frame 8, the arc-shaped electromagnet 46 being magnetically connected to the corresponding iron blocks 48 on the mounting ring 47, an annular groove 49 fixedly connected to the center of the threaded disc 30, a sliding seat 50 fixedly connected to the sliding groove frame 8, the sliding seat 50 being fixedly connected within the annular groove 49, and an electromagnetic seat 51 embedded within the sliding seat 50. After power is supplied to the electromagnetic seat 51, the electromagnetic seat 51 can magnetically connect with the annular groove 49. Because the explosion-proof camera housing in the prior art is not regular and has a very special irregular shape, and the existing clamping method for the explosion-proof camera housing generally uses a three-jaw chuck clamping structure to clamp the explosion-proof camera, the distribution area of ​​the multiple clamping tools in the three-jaw chuck clamping structure is relatively even, and the movement range of each clamping tool is limited. The same principle applies to the circumference of the explosion-proof camera housing. However, the clamping effect is not outstanding for this type of irregularly shaped explosion-proof camera housing. Poor contact between the corresponding clamping tool and the explosion-proof camera housing often occurs. Therefore, this invention addresses this problem by first disconnecting the magnetic connection between the arc-shaped electromagnet 46 on one of the sliding slot frames 8 and the corresponding ferrous block 48. Then, the electromagnetic seat 51 corresponding to the sliding slot frame 8 is magnetically connected to the annular slide groove 49. The sliding slot frame 8 can then rotate with the threaded disc 30. The threaded socket 9 inside the sliding slot frame 8 remains stationary during the rotation of the threaded disc 30, while the remaining sliding slot frames 8 do not move. The threaded socket 9 inside the sliding slot frame 8 moves laterally during the rotation of the threaded disc 30, thereby adjusting the circumferential position of one of the sliding slot frames 8. This enables subsequent clamping operations on different positions of the explosion-proof camera housing and ensures the movement path of different clamping blocks 10, achieving effective clamping of the explosion-proof camera housing.

[0042] Furthermore, the positions of one or two sliding slot frames 8 and threaded sockets 9 can be adjusted in an orderly manner using the above method to ensure the accuracy of the adjustment. In addition, multiple circumferentially distributed iron blocks 48 can serve as displacement calibration points for the sliding slot frame 8, and the circumferential movement distance of the sliding slot frame 8 and the differences between the multiple threaded sockets 9 can be planned.

[0043] The threaded socket 9 is used to install a clamping block 10 for clamping the camera housing. Because the shape of the camera housing is irregular, when clamping camera housings of different shapes and aligning the center point of the camera housings of different shapes with the center point of the rotating cylinder 7, it is necessary to select a clamping block 10 of the corresponding shape, install the clamping block 10 into the threaded socket 9, and move the clamping block 10 with the threaded socket 9 to clamp the camera housing.

[0044] A fixing structure is provided between the rotating cylinder 7 and the upper mounting cylinder 5 or the lower mounting cylinder 4. The fixing structure includes a rotating ring 11 and an insertion rod 14. The rotating ring 11 is fixedly connected to the rotating cylinder 7, and a receiving cylinder 12 is slidably connected to the rotating ring 11. An electromagnet 13 is provided on the receiving cylinder 12, and the insertion rod 14 is slidably arranged inside the receiving cylinder 12. The insertion rod 14 is magnetically connected to the electromagnet 13. The insertion rod 14 is fixedly connected to the upper mounting cylinder 5 or the lower mounting cylinder 4 through a mounting truss 15. When no welding work is performed on the camera housing, the... The position of the rotating cylinder 7 is moved upward into the mounting cylinder 5 or downward into the mounting cylinder 4. Then, the rotating cylinder 7, the rotating ring 11, and the receiving cylinder 12 move together, so that the insertion rod 14 contacts the electromagnet 13 inside the receiving cylinder 12. The end of the insertion rod 14 that extends into the receiving cylinder 12 is made of ferrous material. Then, the insertion rod 14 is magnetically connected to the electromagnet 13 to fix the rotating cylinder 7. During the rotation of the rotating cylinder 7, the sliding connection between the rotating ring 11 and the receiving cylinder 12 will not affect the insertion rod 14.

[0045] The upper shell clamping structure is longitudinally slidably mounted on one of the lifting brackets 3. Both lifting brackets 3 are equipped with screw lifting structures. One of the lifting brackets 3 is slidably equipped with an annular sliding member 16. The upper rotating cylinder 7 is rotatably mounted on the annular sliding member 16. The annular sliding member 16 is driven by the corresponding screw lifting structure. The annular frame 6 is driven by the other lifting bracket 3 and the screw lifting structure. When it is necessary to drive the upper rotating cylinder 7 to descend, the annular sliding member 16 and the rotating cylinder 7 are driven to descend along the corresponding lifting bracket 3 through one of the screw lifting structures. Because the lengths of the two camera shells are different, the two rotating cylinders 7 in this invention do not move the same distance in order to make the welding end faces of the two camera shells close to the welding position of the laser welding equipment 2. After the two camera shells are docked, the annular frame 6 and the laser welding equipment 2 and other components on the annular frame 6 are driven by the other screw lifting structure to adjust their longitudinal positions together, so that the position of the laser welding equipment 2 is adjusted to the horizontal height of the middle area of ​​the circumferential welding position of the camera shell.

[0046] The lead screw lifting structure includes a transmission lead screw 32 and a second drive motor 33. The transmission lead screw 32 is rotatably connected inside the lifting bracket 3. The second drive motor 33 is installed on the lifting bracket 3. The output end of the second drive motor 33 is fixedly connected to the transmission lead screw 32. The annular sliding member 16 and the annular frame 6 are respectively driven and cooperated with the two transmission lead screws 32. The gearbox 17 located on the upper side is also fixedly connected to the annular sliding member 16. When it is necessary to drive the annular sliding member 16 or the annular frame 6 to move longitudinally, the second drive motor 33 is started to drive the transmission lead screw 32 to rotate, thereby moving the annular sliding member 16 or the annular frame 6 longitudinally.

[0047] Both housing clamping structures clamp the camera housings close together, and these structures can drive the two camera housings to move longitudinally after they are joined, ensuring that the welding area of ​​the camera housings always corresponds to the laser welding equipment 2. A second electric cylinder 29 is installed on the mounting truss 15 located on the lower side. The output end of the second electric cylinder 29 is rotatably connected to the bottom of the rotating cylinder 7 located on the lower side. After the corresponding ends of the two camera housings are joined, the welding surfaces of the two camera housings are joined. Since the welding surfaces of the two camera housings are sometimes not completely flat but have curves, the second electric cylinder 29 and the corresponding transmission screw 32 drive the two rotating cylinders 7 to move up or down together while the two camera housings remain joined. This ensures that the welding focus of the welding area always corresponds to the position of the laser welding equipment 2 as the camera housings follow the circumferential rotation of the rotating cylinder 7.

[0048] Both rotating cylinders 7 are equipped with gearboxes 17. A drive shaft 18 is rotatably connected to one side of the bottom frame 1, passing through both gearboxes 17. The drive shaft 18 is in drive engagement with the lower gearbox 17, while a meshing sleeve 19 is fixedly connected through the upper gearbox 17. The meshing sleeve 19 meshes with the top of the drive shaft 18, driving the two rotating cylinders 7 to rotate synchronously. Each gearbox 17 contains at least a drive gear 34 and a driving gear 35. The driving gear 35 is sleeved on the rotating cylinder 7, and the drive gear 34 and driving gear 35 are in drive engagement. The lower drive gear 34 is fixedly sleeved on the bottom of the lower drive shaft 18, and the upper drive gear 34 is fixedly sleeved on the meshing sleeve 19. The top of the drive shaft 18 is provided with an external spline, and the meshing sleeve 19 is provided with an internal spline, which meshes with the external spline. The rotating body 7 rotates synchronously, causing the two camera housings to rotate around the center point of the rotating cylinder 7. When the camera housings complete the circumferential welding operation, a third drive motor 36 is installed on the bottom frame 1. The output end of the third drive motor 36 is fixedly connected to the transmission shaft 18. The third drive motor 36 is started to drive the transmission shaft 18 to rotate, so that the transmission shaft 18 directly drives the drive gear 34 on the bottom side to rotate, and through the meshing relationship between the transmission shaft 18 and the meshing sleeve 19, it drives the drive gear 34 on the upper side to rotate, thereby driving the drive gear 35 and the rotating cylinder 7. When the rotating cylinder 7 and gearbox 17 on the upper side descend, the meshing sleeve 19 moves longitudinally on the transmission shaft 18. The meshing sleeve 19 also always maintains the meshing relationship with the transmission shaft 18, so that the rotation of the two rotating cylinders 7 remains synchronous. The rotation speed of the two camera housings is equal during the welding process, which can ensure that the weld seam of the two camera housings is uniform.

[0049] The laser welding equipment 2 has a welding auxiliary structure on its top for detecting welding distance and welding quality. This structure includes a distance sensor 20 and an image capturing device 21, which are respectively positioned on opposite sides of the top of the laser welding equipment 2. The working ends of both the distance sensor 20 and the image capturing device 21 face the welding area of ​​the camera housing. Based on the welding path of the welding area, the distance sensor 20 can first sense the actual distance between the welding area and the laser welding equipment 2, even with the irregular shape of the camera housing, to adjust the laser welding focus of the laser welding equipment 2 and predict the welding point in advance. Then, regarding the... After laser welding of the welding area, the image capturing device 21 can magnify the actual welding image of the welding area, making it easier for operators to make actual judgments on the welding situation. The distance sensor 20 is a common laser distance measuring device in the prior art, which can accurately measure the actual distance between the output end of the laser welding device 2 and the camera housing, making it easy to adjust the welding focus position of the laser welding device 2. However, because the welding focus area is prone to flashes and other problems that affect the operator's observation of the actual welding effect, the image capturing device 21 can be set up to directly capture the welding area after laser welding, and transmit the image to the workbench next to it through electrical principles, making it easy for the staff to observe and judge.

[0050] The annular frame 6 is longitudinally slidably mounted on another lifting bracket 3. The laser welding equipment 2 is mounted on the annular frame 6. An adjustable exhaust gas suction structure is installed inside the annular frame 6 to extract exhaust gas generated at different welding positions on the camera housing. The exhaust gas suction structure includes an arc-shaped suction cylinder 22, a curved suction pipe 25, a first electric cylinder 26, a suction pipe 27, and an exhaust valve pipe 28. Two arc-shaped suction cylinders 22 are provided, one on each side of the laser welding equipment 2. Each arc-shaped suction cylinder 22 is divided into a stretching section 23 and an offset section 24. The stretching section 23 is mounted inside the annular frame 6 via a connecting seat. The offset section 24 is connected to the curved suction pipe 25. Both sides of the welding equipment 2 are equipped with first electric cylinders 26. The output end of the first electric cylinders 26 is connected to the offset section 24. When laser welding is performed on the welding area of ​​the camera housing, a certain amount of waste gas is generated. At this time, the two first electric cylinders 26 are activated to drive the offset section 24 of the arc-shaped suction cylinder 22 to start moving. The stretching section 23 will deform slightly to adapt to the position change, and move the curved suction pipe 25 to the vicinity of the welding area. The waste gas generated is sucked up through the curved suction pipe 25. The distance sensor 20 detects the changes in the welding area and adjusts the distance between the curved suction pipe 25 and the welding area accordingly to ensure that the waste gas generated in different welding areas is sucked up.

[0051] Multiple suction pipes 27 are connected to the inner arc surfaces of the stretching section 23 and the offset section 24. The length of the multiple suction pipes 27 decreases sequentially from the stretching section 23 to the offset section 24. Both stretching sections 23 are connected to exhaust valve pipes 28, which pass through the connecting seat and the annular frame 6. An external negative pressure suction device is connected to the exhaust valve pipe 28. When the negative pressure suction device is activated, a vacuum is generated inside the arc-shaped suction cylinder 22, creating negative pressure at the curved suction pipe 25 and the suction pipe 27 to absorb the exhaust gas. When the position of the arc-shaped suction cylinder 22 shifts, the multiple suction pipes 27 of different lengths can get closer to the welding area of ​​the camera housing, thereby achieving full absorption of the exhaust gas.

[0052] like Figures 1 to 5 and Figures 8 to 9 As shown in Embodiment 2, in the use of this invention, a clamping block 10 of a special shape is used to clamp the explosion-proof camera. However, there are many types of explosion-proof cameras with different shapes and sizes, and it is not convenient to customize a special clamping block 10 for multiple explosion-proof cameras. In the use of this invention, in order to achieve stable clamping of multiple explosion-proof cameras, this invention also includes a clamping structure. The clamping structure includes a multi-slot socket 37, which is installed in a threaded socket 9. The top of the multi-slot socket 37 is provided with multiple movable slots 38. A movable block 39 is slidably connected in each movable slot 38. A push screw 40 is threadedly connected to the movable slot 38. One end of the push screw 40 is rotatably connected to the movable block 39. An extension rod 41 is fixedly connected to the movable block 39. One end of the extension rod 41 is rotatably connected to an arc-shaped clamping piece 43 through a rotating shaft 42. A rotating bushing 44 is rotatably connected to the extension rod 41. Multiple abutments are circumferentially fixedly connected to the rotating bushing 44. The contact blocks 45 have different shapes. When it is necessary to clamp the outer wall of the explosion-proof camera with different shapes, the threaded disc 30 first moves the threaded socket 9 to adjust the position of the multi-slide socket 37 so that the multiple arc-shaped clamping pieces 43 are all moved to the area close to the explosion-proof camera. The push screw 40 is rotated to adjust the position of the moving block 39 in the moving slide 38. The position of the multiple arc-shaped clamping pieces 43 is adjusted in turn so that the arc-shaped clamping pieces 43 are in contact with the explosion-proof camera. In order to increase the contact area between the arc-shaped clamping pieces 43 and the explosion-proof camera, the arc-shaped clamping pieces 43 can be rotated along the center point of the rotating shaft 42. Then, in order to limit the rotation angle of the arc-shaped clamping pieces 43, the rotating bushing 44 can be rotated to rotate the appropriate volume of the contact block 45 to the deflection direction of the arc-shaped clamping piece 43. After the arc-shaped clamping piece 43 is rotated, it contacts the contact block 45, so that the arc-shaped clamping piece 43 can stop rotating and stably clamp the explosion-proof camera.

[0053] The working principle of the welding device used in the production of explosion-proof cameras:

[0054] First, move the two unwelded camera housings to a position where they fit against the conical feeding platform. Then, start the first drive motor 31 to rotate the threaded disc 30, causing the multiple threaded sockets 9 to slide within their respective sliding slots 8. Next, clamp the camera housings with the clamping block 10. Through one of the lead screw lifting structures, drive the annular sliding member 16 and the rotating cylinder 7 to descend along the corresponding lifting bracket 3, so that the welding end faces of the two camera housings fit together. Through another lead screw lifting structure, drive the annular frame 6 and the laser welding equipment 2 and other components on the annular frame 6 to adjust their longitudinal position together, so that the position of the laser welding equipment 2 is adjusted to the horizontal height of the middle area of ​​the circumferential welding position of the camera housing. Then, start the laser welding equipment 2 to perform welding operations on the welding area.

[0055] During the welding operation, the third drive motor 36 is started to drive the transmission shaft 18 to rotate, which in turn drives the drive gear 34 on the bottom side to rotate. Through the meshing relationship between the transmission shaft 18 and the meshing sleeve 19, the drive gear 34 on the upper side is also driven to rotate, thereby driving the drive gear 35 and the rotating cylinder 7. This causes the two camera housings to rotate around the center point of the rotating cylinder 7. The laser welding equipment 2 performs circumferential welding on the two camera housings. The distance sensor 20 can detect the actual distance between the welding area and the laser welding equipment 2 under the irregular shape of the camera housings and adjust the laser welding focus of the laser welding equipment 2. After the laser welding of the welding area, the image capturing device 21 can magnify the actual welding image of the welding area, which is convenient for the operator to make an actual judgment on the welding situation.

[0056] During laser welding of the welding area of ​​the camera housing, a certain amount of waste gas is generated. At this time, the two first electric cylinders 26 are activated to drive the offset section 24 of the arc-shaped suction cylinder 22 to move. The stretching section 23 will deform slightly to adapt to the position change, moving the curved suction pipe 25 to the vicinity of the welding area. The waste gas generated is sucked up through the curved suction pipe 25. The distance sensor 20 detects the changes in the welding area and adjusts the distance between the curved suction pipe 25 and the welding area accordingly to ensure that the waste gas generated in different welding areas is sucked up. The negative pressure suction device is activated to create a vacuum in the arc-shaped suction cylinder 22, creating negative pressure at the curved suction pipe 25 and the suction pipe 27 to suck up the waste gas. When the position of the arc-shaped suction cylinder 22 shifts, multiple suction pipes 27 of different lengths can get closer to the welding area of ​​the camera housing and fully suck up the waste gas.

[0057] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. An explosion-proof camera production welding device, comprising a bottom rack (1) and a laser welding device (2), the laser welding device (2) is arranged at the top of the bottom rack (1), characterized in that, Also include: Lifting support (3), the top of the bottom rack (1) is fixedly connected with two lifting supports (3), the bottom of the bottom rack (1) is fixedly connected with a lower mounting cylinder (4), the top of two lifting supports (3) is fixedly connected with an upper mounting cylinder (5), the center points of the lower mounting cylinder (4) and the upper mounting cylinder (5) correspond, the lower mounting cylinder (4) and the upper mounting cylinder (5) are provided with shell clamping structures, the shell clamping structure on the upper side is longitudinally slidably arranged on one of the lifting supports (3), the two shell clamping structures are close to each other after clamping the camera shell, and the two shell clamping structures can drive the two camera shells after lamination to move longitudinally, so that the camera shell welding area always corresponds to the laser welding equipment (2); Wherein, the top of the laser welding equipment (2) is provided with a welding auxiliary structure for detecting the welding distance and the welding quality; Annular frame (6), the annular frame (6) is longitudinally slidably arranged on the other lifting support (3), the laser welding equipment (2) is arranged on the annular frame (6), the annular frame (6) is provided with a waste gas suction structure with adjustable suction range for suctioning waste gas generated at different welding positions of the camera shell; The shell clamping structure comprises: Rotary cylinder (7), the rotary cylinder (7) is movably arranged in the upper mounting cylinder (5) or the lower mounting cylinder (4), a plurality of sliding groove frames (8) are arranged on the inner circumference of the rotary cylinder (7), a threaded socket (9) is slidably connected to the sliding groove frame (8), a moving structure is arranged between the threaded socket (9) and the rotary cylinder (7), and the moving structure is used to drive the threaded socket (9) to move towards or away from the center point of the rotary cylinder (7); Magnetic positioning structure is arranged between the rotary cylinder (7), the moving structure and the plurality of sliding groove frames (8); Wherein, the threaded socket (9) is provided with a clamping block (10) for clamping the camera shell; Fixed structure, the fixed structure is arranged between the rotary cylinder (7) and the upper mounting cylinder (5) or the lower mounting cylinder (4); The waste gas suction structure comprises: Arc-shaped suction cylinder (22), the number is two and is arranged on both sides of the laser welding equipment (2), respectively, the arc-shaped suction cylinder (22) is divided into a stretching section (23) and a deviation section (24), the stretching section (23) is arranged in the annular frame (6) through a connecting seat; Curved suction pipeline (25), the curved suction pipeline (25) is communicated with the deviation section (24); First electric cylinder (26), the first electric cylinder (26) is arranged on both sides of the laser welding equipment (2), and the output end of the first electric cylinder (26) is connected with the deviation section (24); A plurality of suction pipes (27) are communicated with the inner arc surfaces of the stretching sections (23) and the offset sections (24), and the lengths of the plurality of suction pipes (27) gradually decrease from the stretching sections (23) to the offset sections (24); An air outlet valve pipe (28) is communicated with the two stretching sections (23), and the air outlet valve pipe (28) penetrates the connecting seat and the annular frame (6); The magnetic positioning structure comprises an arc-shaped electromagnet (46), the rotating cylinder (7) is fixedly connected with a mounting ring (47), a plurality of ferromagnetic blocks (48) are fixedly connected in a circle on the mounting ring (47), and the arc-shaped electromagnet (46) is arranged on the sliding groove frame (8) and is magnetically connected with the corresponding ferromagnetic blocks (48) on the mounting ring (47).

2. The welding device for producing an explosion-proof camera according to claim 1, characterized in that, The fixing structure comprises: A rotating ring (11) is fixedly connected to the rotating cylinder (7), and a containing cylinder (12) is slidingly connected to the rotating ring (11); an electromagnet (13) is arranged on the containing cylinder (12); An insertion rod (14) is slidingly arranged in the containing cylinder (12), and the insertion rod (14) is magnetically connected with the electromagnet (13); the insertion rod (14) is fixedly connected with the upper mounting cylinder (5) or the lower mounting cylinder (4) through a mounting truss (15).

3. The welding device for producing an explosion-proof camera according to claim 2, characterized in that, A screw lifting structure is arranged in each of the two lifting supports (3), a ring-shaped sliding member (16) is slidingly arranged in one of the two lifting supports (3), the upper rotating cylinder (7) is rotatably sleeved on the ring-shaped sliding member (16), the ring-shaped sliding member (16) is drivingly connected with the screw lifting structure, and the annular frame (6) is drivingly connected with the screw lifting structure in the other lifting support (3).

4. The welding device for producing an explosion-proof camera according to claim 2, characterized in that, Gearboxes (17) are drivingly connected to the two rotating cylinders (7), a transmission shaft (18) is rotatably connected to one side of the bottom rack (1), the transmission shaft (18) penetrates the two gearboxes (17), the transmission shaft (18) is drivingly connected with the lower gearbox (17), a meshing sleeve (19) is fixedly connected to the upper gearbox (17), and the meshing sleeve (19) is meshed with the top of the transmission shaft (18) to drive the two rotating cylinders (7) to rotate synchronously.

5. The welding device for producing an explosion-proof camera head according to claim 1, characterized in that, The welding auxiliary structure comprises: A distance measuring sensor (20) and an image shooting device (21) are arranged on the top of the laser welding device (2), and the working ends of the distance measuring sensor (20) and the image shooting device (21) are directed to the camera housing welding area.

6. The welding device for producing an explosion-proof camera head according to claim 3, characterized in that, A second electric cylinder (29) is arranged on the lower mounting truss (15), and the output end of the second electric cylinder (29) is rotatably connected with the bottom of the lower rotating cylinder (7).

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