Automatic feeding and discharging equipment for thread tapping of fire-fighting pipe fitting

Abstract

The invention provides fire-fighting pipe fitting thread tapping automatic feeding and discharging equipment which comprises a feeding plate chain line, side baffles are arranged on the two sides of the feeding plate chain line, and a positioning assembly is arranged at the tail end of the feeding plate chain line; the track conveying line comprises a track plate, a centering clamping assembly and a pushing assembly, the pushing assembly is arranged at one end of the track plate, and the centering clamping assembly is arranged at the machining station; the multi-degree-of-freedom manipulator is arranged between the feeding plate chain line and the conveying track line and used for clamping and conveying the fire-fighting pipe fittings at the tail end of the feeding plate chain line to the track plate, and the fire-fighting pipe fittings are sequentially arranged on the track plate under the cooperation of the pushing assembly; the purging device is arranged behind the processing station; and the receiving device is arranged at the tail end of the track plate. The equipment can greatly improve the production efficiency and the production safety, can automatically clean scrap iron and the like obtained after machining, guarantees the machining precision, reduces machining collision, is simple to operate, is easy to replace tools, and can be suitable for fire-fighting pipe fittings of multiple specifications.

Description

Technical Field

[0001] The invention mainly relates to the technical field related to mechanical product processing, and specifically is an automatic loading and unloading device for thread tapping of fire-fighting pipe fittings. Background Art

[0002] Fire fittings (mainly fire mechanical tees) can be used to directly connect branch pipes on steel pipes, and are widely used in the installation of fire pipes and sprinkler pipes. Fire fittings can be used when diversion or confluence is required. They have good performance, high sealing, easy installation, and are widely used. They have gradually replaced the two traditional pipeline connection methods of flanges and welding, and have become the preferred technology for current liquid and gas pipeline connections.

[0003] Fire fighting pipe fittings have different models according to the different diameters of the connecting pipes. Their basic structures are as follows: Figure 1 , Figure 2 As shown in the figure, it mainly includes an arc-shaped portion 11 and a cylindrical protruding portion 12. The arc-shaped portion 11 has connecting ears 13 on both sides, and the arc-shaped portion 11 has a boss 14 in the middle. In the process of processing and producing fire-fighting pipe fittings, each type of fire-fighting pipe fitting needs to be threaded at the opening in the center of the cylindrical protruding portion 12, and iron filings after processing need to be cleaned.

[0004] At present, most manufacturers' thread processing of fire-fighting pipe fittings is done by manually clamping the fittings on the tooling, and then operating the tapping machine to complete the process. After processing, the iron filings are manually cleaned through the air pipe, and then the paint is touched up after checking whether there are any bumps. Because the fire-fighting threaded fire-fighting pipe fittings themselves are special-shaped objects, there is no automated equipment on the market that can realize the loading and unloading of the tapping machine and the corresponding automatic blowing. Therefore, the existing loading and unloading methods on the market can only use manual clamping and disassembly of the tapped fire-fighting pipe fittings individually, and then blow away the iron filings, which consumes a lot of manpower, has low production efficiency, and is difficult to ensure product consistency. Summary of the invention

[0005] In order to solve the shortcomings of the current technology, the present invention combines the existing technology and, based on practical applications, provides an automatic loading and unloading equipment for thread tapping of fire-fighting pipe fittings, which can greatly improve production efficiency and production safety, and can automatically clean up iron filings after processing, ensure its processing accuracy and reduce processing bumps, is simple to operate, easy to change tooling, and can be applicable to fire-fighting pipe fittings of various specifications.

[0006] The technical solution of the present invention is as follows:

[0007] An automatic loading and unloading device for thread tapping of fire-fighting pipe fittings, comprising:

[0008] The feeding plate chain line is used for parallel conveying of fire-fighting pipe fittings. Side baffles are arranged on both sides of the feeding plate chain line, and a positioning component is arranged at the end of the feeding plate chain line;

[0009] The track conveyor line includes a long track plate, a centering clamping assembly and a pushing assembly. The pushing assembly is arranged at one end of the track plate. The pushing assembly has a pushing plate that can move along the length direction of the track plate. The pushing plate pushes the fire-fighting pipe fittings to move backward along the track plate to a processing station. The centering clamping assembly is arranged at the processing station and is used to clamp and fix the fire-fighting pipe fittings while centering and positioning the fire-fighting pipe fittings directly below the tap of the tapping machine.

[0010] The multi-degree-of-freedom manipulator is arranged between the loading plate chain line and the conveying track line, and is used to clamp and convey the fire-fighting pipe fittings at the end of the loading plate chain line to the track plate, and arrange the fire-fighting pipe fittings on the track plate in sequence with the cooperation of the pushing assembly;

[0011] The purge device is arranged behind the processing station and is used to clean the processed fire-fighting pipe fittings through the air nozzle;

[0012] The material receiving device is arranged at the end of the track plate and is used to receive the processed fire-fighting pipe fittings.

[0013] With the loading and unloading equipment of the above structure, workers only need to place the fire-fighting pipe fittings on the conveyor chain at one end of the loading plate chain line. The fire-fighting pipe fittings run backwards in sequence and are grabbed one by one by the manipulator onto the track conveyor line. On the track conveyor line, the fire-fighting pipe fittings are tapped one by one with the cooperation of the pushing assembly, the centering clamping assembly and the tapping machine, and then automatically purged and unloaded, thus realizing comprehensive automation, improving production efficiency and reducing manpower labor.

[0014] Furthermore, an end baffle is provided behind the positioning assembly of the loading plate chain line, and the position of the end baffle is adjustable in the length direction of the loading plate chain line, and the position of the side baffle is adjustable in the width direction of the loading plate chain line.

[0015] The adjustable baffle structure can be quickly adjusted when replacing fire-fighting pipe fittings of different specifications, thereby ensuring the versatility of the equipment for fire-fighting pipe fittings of different specifications.

[0016] Further, the positioning assembly includes positioning cylinders arranged on both sides of the width direction of the feeding plate chain line, the positioning cylinders are connected to a V-shaped positioning head, and a limiting plate is arranged on one side of the V-shaped positioning head;

[0017] The fire-fighting pipe fittings are conveyed on the feeding plate chain line in the following state: the arc-shaped part is at the bottom and the cylindrical protruding part is at the top;

[0018] The limit plate stops the fire-fighting pipe fitting on the feeding plate chain line by blocking the connecting ears on both sides of the arc-shaped portion of the fire-fighting pipe fitting.

[0019] The fire-fighting pipe fittings are always in a state with the cylindrical protrusion facing upwards on the production line, which can facilitate their clamping and positioning on the one hand, and facilitate the subsequent tapping process on the other hand.

[0020] Further, the multi-degree-of-freedom manipulator is provided with a clamp for clamping fire-fighting pipe fittings;

[0021] The clamp comprises a finger clamping cylinder and clamping claws installed on both sides of the finger clamping cylinder, and the clamping claws are used for grasping the columnar protrusions on the upper part of the fire-proof pipe.

[0022] Furthermore, the track plate adopts a detachable installation structure, the upper part of the track plate is a convex arc structure, the arc structure is consistent with the size of the arc part of the fire pipe fitting, when the multi-degree-of-freedom manipulator grabs the fire pipe fitting to the track plate, the arc part of the fire pipe fitting is clamped on the arc structure on the upper part of the track plate;

[0023] A slide groove is arranged in the middle of the track plate, and the slide groove is used to cooperate with the boss in the middle of the arc-shaped part of the fire-fighting pipe fitting. An expansion groove is arranged at the front end of the slide groove, and the width of the expansion groove is greater than the width of the slide groove. The multi-degree-of-freedom manipulator places the fire-fighting pipe fitting at the position of the expansion groove.

[0024] The structural design of the track plate can match the fire-fighting pipe fittings, and its arc-shaped structure can enable the fire-fighting pipe fittings to be mounted thereon. At the same time, the slide groove and the boss of the fire-fighting pipe fittings themselves are further coordinated to realize the limiting guide, thereby ensuring the limiting and stability of the fire-fighting pipe fittings during operation. The expansion slot is set at the end to facilitate the placement of the fire-fighting pipe fittings by the manipulator.

[0025] Furthermore, the pushing assembly comprises a pushing cylinder, and the lower surface of the pushing plate mounted on the pushing cylinder is an arc shape adapted to the upper surface of the track plate.

[0026] Furthermore, the centering clamping assembly includes a centering clamping cylinder and two clamping plates. The two clamping plates are installed on the guide rail slider. The two clamping plates are respectively connected to a rack. A gear is arranged between the two racks. The centering clamping cylinder is connected to one of the clamping plates. When the centering clamping cylinder is extended or retracted, it drives one of the clamping plates to move. One of the clamping plates drives the other clamping plate to move relative to the other clamping plate through the gear and the rack. The clamping and centering of the fire-fighting pipe fittings are achieved by means of clamping blocks installed on the two clamping plates. The clamping blocks act on the connecting ears at both ends of the arc-shaped portion of the fire-fighting pipe fittings.

[0027] In this centering structure, two clamping plates can be pushed to move toward each other by only one cylinder. The structure is ingeniously designed, reasonably compact, and reduces the use of parts.

[0028] Furthermore, the purging device includes a cover body, which is arranged across the track plate, with blocking cloths on the front and rear sides of the cover body, a material receiving cover is arranged below the cover body, and an air nozzle extends into the cover body.

[0029] The design of the cover body can prevent iron filings from splashing to the outside, and the setting of the baffle cloth can enable the fire-fighting pipe to pass through the purge device smoothly.

[0030] Furthermore, the material receiving device includes two material receiving bins, and the two material receiving bins are driven by a transposition motor to achieve station switching. The two material receiving bins are driven by a transposition motor to achieve station switching.

[0031] Furthermore, two loading plate chain lines are arranged in parallel and at intervals, and the multi-degree-of-freedom manipulator is located between the two loading plate chain lines. Each loading plate chain line is equipped with a track conveyor line, a purge device, and a material receiving bin, and the multi-degree-of-freedom manipulator alternately loads materials between the two workstations.

[0032] The tapping operations of the two stations are controlled by the same manipulator to improve the processing efficiency. The models of the fire-fighting pipe fittings in the two stations can be the same or different.

[0033] Beneficial effects of the present invention:

[0034] 1. The present invention can realize automatic loading and unloading of fire-fighting pipe fittings during thread processing. The entire process from loading, processing, blowing iron chips to unloading is automated, which reduces the labor intensity of manpower, improves the processing efficiency of fire-fighting pipe fittings, and ensures the consistency of products.

[0035] 2. In the present invention, the overall structure is reasonably arranged and occupies little space. The equipment can be applied to the processing of fire-fighting pipe fittings of various specifications by quickly replacing equipment parts.

[0036] 3. In the present invention, the transportation and clamping positioning method of the fire-fighting pipe fittings in the equipment production can reduce the collision of parts and components, so as to reduce the subsequent repainting work as much as possible. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 The fire protection pipe structure of the present invention is shown in FIG. Figure 1 .

[0038] Figure 2 The fire protection pipe structure of the present invention is shown in FIG. Figure 2 .

[0039] Figure 3 It is a schematic diagram of the overall structure of the present invention.

[0040] Figure 4 It is a schematic diagram of the chain line structure of the feeding plate of the present invention.

[0041] Figure 5 It is a schematic diagram of the structure of the chain line part of the loading plate of the present invention.

[0042] Figure 6It is a schematic diagram of the structure of the multi-degree-of-freedom manipulator of the present invention.

[0043] Figure 7 A schematic diagram of the fixture structure configured for the robot arm of the present invention.

[0044] Figure 8 It is a partial structural schematic diagram of the present invention.

[0045] Fig. 9 It is a schematic diagram of the structure of the track conveyor line of the present invention.

[0046] Fig.10 It is a schematic diagram of the track plate structure of the present invention.

[0047] Fig.11 The centering clamping assembly structure of the present invention is schematically shown in FIG. Figure 1 .

[0048] Fig.12 The centering clamping assembly structure of the present invention is schematically shown in FIG. Figure 2 .

[0049] Fig.13 It is a schematic diagram of the structure of the purge device of the present invention.

[0050] Fig.14 It is a schematic structural diagram of the material receiving device of the present invention.

[0051] Numbers shown in the figure:

[0052] 1. Fire-fighting pipe fitting; 11. Arc-shaped portion; 12. Columnar raised portion; 13. Connecting ear; 14. Boss;

[0053] 2. Loading plate chain line; 21. Side baffle; 22. End baffle; 23. Positioning cylinder; 24. V-shaped positioning head; 25. Limiting plate;

[0054] 3. Multi-degree-of-freedom manipulator; 31. Six-degree-of-freedom manipulator; 32. Clamp; 321. Finger-gripping cylinder; 322. Gripper;

[0055] 4. Track conveyor line; 41. Track plate; 411. Slide; 412. Expansion slot; 42. Push cylinder; 43. Push plate; 44. Centering clamping assembly; 441. Centering clamping cylinder; 442. Clamping plate; 443. Clamping block; 444. Gear; 445. Rack;

[0056] 5. Purge device; 51. Cover body; 52. Cloth stop; 53. Material receiving cover;

[0057] 6. Material receiving device; 61. Material receiving bin; 62. Transposition motor;

[0058] 7. Tapping machine. DETAILED DESCRIPTION

[0059] The present invention will be further described with reference to the accompanying drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art may make various changes or modifications to the present invention, and these equivalent forms also fall within the scope limited by the application.

[0060] The present embodiment provides an automatic loading and unloading device for thread tapping of fire-fighting pipe fittings, which is mainly used for continuous loading of fire-fighting pipe fittings, and for cleaning and unloading operations after the threads are processed by a tapping machine.

[0061] Reference Figure 3 As shown in the figure, the main structure of the automatic loading and unloading equipment for thread tapping of fire-fighting pipe fittings in this embodiment is as follows: it includes a loading plate chain line 2, a multi-degree-of-freedom manipulator 3, a track conveyor line 4, a purge device 5, and a material receiving device 6.

[0062] The feeding plate chain line 2 is mainly used to supply fire fighting pipes 1, and its specific structure is as follows: Figure 4 , Figure 5 As shown. The loading plate chain line 2 mainly includes a conveying chain plate, side baffles 21 arranged on both sides of the conveying chain plate, a positioning assembly arranged at the end of the conveying chain plate, and an end baffle 22. The positioning assembly includes a positioning cylinder 23 arranged on both sides of the width direction of the conveying plate chain, the positioning cylinder 23 is connected to a V-shaped positioning head 24, and a limiting plate 25 is arranged on one side of the V-shaped positioning head 24. For the fire-fighting pipe fittings 1, it is transported on the loading plate chain line 2 in the state shown in the figure, and its state is: the arc-shaped portion 11 of the fire-fighting pipe fittings 1 is at the bottom and the cylindrical protrusion 12 is at the top. The side baffles 21 on both sides can realize the limitation of the fire-fighting pipe fittings 1 during transportation, and the end baffles 22 are used for positioning the fire-fighting pipe fittings 1 when they move to the extreme position. In order to ensure that the loading plate chain line 2 can be suitable for fire-fighting pipe fittings of different specifications and sizes, in the present embodiment, the side baffles 21 and the end baffles 22 are both set as adjustable structures, that is, the spacing between the side baffles 21 on both sides is adjustable, and the position of the end baffles 22 in the conveying direction is adjustable to ensure that the fire-fighting pipe fittings 1 can be clamped and positioned by the positioning assembly when they are in the extreme position.

[0063] In the above structure of this embodiment, a worker or other automatic equipment places the fire-fighting pipe fitting 1 on the upper material plate chain line 2 from one end. When the fire-fighting pipe fitting 1 moves to the end, it is blocked by the end baffle 22. At this time, the positioning cylinder 23 is actuated, and the V-shaped positioning head 24 of the positioning cylinder 23 clamps the connecting ears 13 on both sides of the fire-fighting pipe fitting 1 to realize the positioning of the fire-fighting pipe fitting 1, so as to facilitate the subsequent grasping of the manipulator. At this time, the limit plate 25 on one side of the V-shaped positioning head 24 is located between two adjacent fire-fighting pipe fittings 1, and by blocking the connecting ears 13 of the next fire-fighting pipe fitting 1, the next fire-fighting pipe fitting 1 is prevented from continuing to move backward. After the manipulator grasps it, the positioning cylinder 23 retracts, and the next fire-fighting pipe fitting 1 enters the grasping position, and the cycle is repeated to realize the loading one by one.

[0064] In this embodiment, a multi-degree-of-freedom manipulator 3 is arranged behind the loading plate chain line 2. Figure 6 , Figure 7 As shown, the multi-DOF manipulator 3 mainly includes a six-DOF manipulator 31 and a fixture 32. The multi-DOF manipulator 3 is mainly used to place the fire-fighting pipe fittings 1 on the loading plate chain line 2 onto the track conveyor line 4 in sequence. The fixture 32 is configured on the six-DOF manipulator 31 to grab the fire-fighting pipe fittings 1. Among them, the fixture 32 mainly includes a finger clamping cylinder 321 and two clamping claws 322. The two clamping claws 322 are driven by the finger clamping cylinder 321 to move toward each other to achieve the grasping or release of the fire-fighting pipe fittings 1, and then the six-DOF manipulator 31 is used to achieve accurate grasping and placement position adjustment. Furthermore, a corresponding sensor is set at the fixture 32 to detect whether the fire-fighting pipe fittings 1 are grasped in place. In this embodiment, when the fixture 32 is transferring the fire-fighting pipe fittings 1, its grasping position is the cylindrical protrusion 12 on the upper part of the fire-fighting pipe fittings 1. On the one hand, this position can facilitate the grasping and placement of the fire-fighting pipe fittings 1, and on the other hand, it can achieve stable and reliable clamping of the special-shaped fire-fighting pipe fittings 1.

[0065] In this embodiment, the rail conveyor line 4 is arranged on one side of the multi-degree-of-freedom manipulator 3, and is mainly used to convey the fire-fighting pipe fittings 1 one by one to the processing station of the tapping machine 7, and then convey them to the purging station after the processing is completed.

[0066] refer to Figure 8 , Fig. 9 , Fig.10 , Fig.11 as well as Fig.12As shown, the track conveyor line 4 mainly includes a long track plate 41, a centering clamping assembly 44 and a pushing assembly. The track conveyor line 4 runs through the processing station of the tapping machine 7. The track plate 41 is installed and fixed by quick release and bolts, and it can be replaced, that is, when it comes to fire-fighting pipe fittings 1 of different sizes and types, the track plate 41 of the corresponding size can be replaced. The upper part of the track plate 41 is a raised arc structure, and the arc structure corresponds to the degree of curvature of the arc portion 11 of the fire-fighting pipe fitting 1. When the manipulator places the fire-fighting pipe fitting 1, its arc portion 11 is directly stuck on the upper surface of the track plate 41. Since the two are matched, the positioning of the fire-fighting pipe fitting 1 can be achieved. Furthermore, a slide groove 411 is arranged along the length direction on the track plate 41. The size of the slide groove 411 corresponds to the boss 14 of the fire-fighting pipe fitting 1, and an expansion groove 412 as shown in the figure is arranged at the end of the slide groove 411. The manipulator places the fire-fighting pipe 1 at the expansion slot 412, and the boss 14 extends into the slide slot 411 to achieve precise positioning, and then is pushed by the pushing assembly to transport it backwards.

[0067] In this embodiment, the pushing assembly includes a pushing cylinder 42 and a pushing plate 43. The lower portion of the pushing plate 43 is arc-shaped and can move along the track plate 41 under the action of the pushing cylinder 42, thereby pushing the fire-fighting pipe 1 to move backward.

[0068] A centering clamping assembly 44 is provided at the corresponding tapping position, and the centering clamping assembly 44 is used to realize the centering, clamping and fixing of the fire-fighting pipe fitting 1 so as to enable accurate and stable tapping operations. As shown in the reference figure, in this embodiment, the centering clamping assembly 44 mainly includes a centering clamping cylinder 441, two clamping plates 442, a clamping block 443 is installed on the clamping plate 442, the two clamping plates 442 are arranged oppositely and installed on the guide rail slider, the two clamping plates 442 are respectively connected to a rack 445, the two racks 445 are arranged oppositely, and a gear 444 is arranged between them. In the above structure, when the fire-fighting pipe fitting 1 moves to the processing station, the centering clamping cylinder 441 is actuated, which drives one of the clamping plates 442 to move. The rack 445 connected to the clamping plate 442 moves horizontally to drive the gear 444 to rotate. The gear 444 drives another rack 445 to move toward each other, and the other clamping plate 442 is driven to move through the rack 445. In this way, the two clamping plates 442 can be driven to move by a centering clamping cylinder 441, and the fire-fighting pipe fitting 1 can be automatically centered and fixed by clamping the connecting ear 13 of the fire-fighting pipe fitting 1 through the clamping block 443.

[0069] In this embodiment, a purge device 5 is provided behind the processing station. The structure of the purge device is as follows: Fig.13As shown, it includes a cover body 51, a receiving cover 53 is arranged below the cover body 51, a blocking cloth 52 is arranged on the front and rear sides of the cover body 51, and an air nozzle is arranged inside the cover body 51. When the fire-fighting pipe fitting 1 is processed and moves backward, it passes through the blocking cloth 52 and enters the cover body 51, and dirt such as iron filings and cutting liquid are blown down through the air nozzle and blown to the outside through the receiving cover 53. The whole adopts a sealed structure to avoid iron filings from splashing, while ensuring the normal transportation of the fire-fighting pipe fitting 1.

[0070] In this embodiment, a material receiving device 6 is provided at the end of the device. Fig.14 As shown, two receiving bins 61 are included, and the two receiving bins 61 are driven by a transposition motor 62 to realize station switching. The fire-fighting pipes that have been processed and purged fall into the receiving bin 61 below to realize material collection. When one of the receiving bins 61 is full, the other empty receiving bin 61 can be rotated 180 degrees to switch to the receiving station.

[0071] The above structure is a description of a single station structure of the device. In this embodiment, a double station can be set to improve processing efficiency. Figure 3 As shown, two feeding plate chain lines 2 are arranged in parallel and spaced apart, and a multi-degree-of-freedom manipulator 3 is arranged between the two feeding plate chain lines 2. Each feeding plate chain line 2 is equipped with a set of track conveyor lines 4, a purge device 5, and a material receiving device 6. The multi-degree-of-freedom manipulator 3 is used to alternately load each station, and the specifications of the fire-fighting pipe fittings 1 of the two stations can be the same or different.

[0072] The main working process of this fire-fighting pipe thread tapping automatic loading and unloading equipment is as follows:

[0073] The untapped fire-fighting pipe fittings are manually placed on the loading plate chain line 2 until the loading plate chain line 2 is full of material. The loading plate chain line 2 keeps running. When the workpiece reaches the end, the workpiece is clamped by the positioning component, and the subsequent workpieces are blocked from following up. The multi-degree-of-freedom manipulator 3 clamps the workpiece and places it in the empty space of the track plate 41 (sensor counting). The pushing cylinder 42 pushes the workpiece in turn (the manipulator reciprocates to place the workpiece in the empty space). The workpieces enter the tapping position one by one, and the relevant sensors sense and realize positioning and tapping through the centering clamp. After the tapping is completed, the main shaft of the tapping machine 7 is lifted, and the workpieces are pushed out one by one. The workpiece reaches the purge position, and the workpiece is pushed into the receiving bin 61 after purge by the air nozzle.

Claims

1. An automatic loading and unloading equipment for thread tapping of fire-fighting pipe fittings, characterized in that: include: The feeding plate chain line is used for parallel conveying of fire-fighting pipe fittings. Side baffles are arranged on both sides of the feeding plate chain line, and a positioning component is arranged at the end of the feeding plate chain line; The track conveyor line includes a long track plate, a centering clamping assembly and a pushing assembly. The pushing assembly is arranged at one end of the track plate. The pushing assembly has a pushing plate that can move along the length direction of the track plate. The pushing plate pushes the fire-fighting pipe fittings to move backward along the track plate to a processing station. The centering clamping assembly is arranged at the processing station and is used to clamp and fix the fire-fighting pipe fittings while centering and positioning the fire-fighting pipe fittings directly below the tap of the tapping machine. The multi-degree-of-freedom manipulator is arranged between the loading plate chain line and the conveying track line, and is used to clamp and convey the fire-fighting pipe fittings at the end of the loading plate chain line to the track plate, and arrange the fire-fighting pipe fittings on the track plate in sequence with the cooperation of the pushing assembly; The purge device is arranged behind the processing station and is used to clean the processed fire-fighting pipe fittings through the air nozzle; The material receiving device is arranged at the end of the track plate and is used to receive the processed fire-fighting pipe fittings.

2. The automatic loading and unloading equipment for thread tapping of fire-fighting pipe fittings according to claim 1 is characterized in that: An end baffle is arranged behind the positioning component of the loading plate chain line, and the end baffle can be adjusted in the length direction of the loading plate chain line, and the side baffle can be adjusted in the width direction of the loading plate chain line.

3. The automatic loading and unloading equipment for thread tapping of fire-fighting pipe fittings according to claim 1 is characterized in that: The positioning assembly includes positioning cylinders arranged on both sides of the width direction of the feeding plate chain line, the positioning cylinders are connected to a V-shaped positioning head, and a limit plate is arranged on one side of the V-shaped positioning head; The fire-fighting pipe fittings are conveyed on the feeding plate chain line in the following state: the arc-shaped part is at the bottom and the cylindrical protruding part is at the top; The limit plate stops the fire-fighting pipe fitting on the feeding plate chain line by blocking the connecting ears on both sides of the arc-shaped portion of the fire-fighting pipe fitting.

4. The automatic loading and unloading equipment for thread tapping of fire-fighting pipe fittings according to claim 1 is characterized in that: The multi-degree-of-freedom manipulator is provided with a clamp for clamping fire-fighting pipe fittings; The clamp comprises a finger clamping cylinder and clamping claws installed on both sides of the finger clamping cylinder, and the clamping claws are used for grasping the columnar protrusions on the upper part of the fire-proof pipe.

5. The automatic loading and unloading equipment for thread tapping of fire-fighting pipe fittings according to claim 1 is characterized in that: The track plate adopts a detachable installation structure, and the upper part of the track plate is a convex arc structure, which matches the size of the arc part of the fire-fighting pipe fitting. When the multi-degree-of-freedom manipulator grabs the fire-fighting pipe fitting to the track plate, the arc part of the fire-fighting pipe fitting is clamped on the arc structure on the upper part of the track plate; A slide groove is arranged in the middle of the track plate, and the slide groove is used to cooperate with the boss in the middle of the arc-shaped part of the fire-fighting pipe fitting. An expansion groove is arranged at the front end of the slide groove, and the width of the expansion groove is greater than the width of the slide groove. The multi-degree-of-freedom manipulator places the fire-fighting pipe fitting at the position of the expansion groove.

6. The automatic loading and unloading equipment for thread tapping of fire-fighting pipe fittings according to claim 1 is characterized in that: The pushing assembly comprises a pushing cylinder, and the lower surface of the pushing plate mounted on the pushing cylinder is an arc shape adapted to the upper surface of the track plate.

7. The automatic loading and unloading equipment for thread tapping of fire-fighting pipe fittings according to claim 1 is characterized in that: The centering clamping assembly includes a centering clamping cylinder and two clamping plates. The two clamping plates are installed on the guide rail slider. The two clamping plates are respectively connected to a rack. A gear is arranged between the two racks. The centering clamping cylinder is connected to one of the clamping plates. When the centering clamping cylinder is extended or retracted, it drives one of the clamping plates to move. One of the clamping plates drives the other clamping plate to move relative to the other clamping plate through the gear and the rack. The clamping and centering of the fire-fighting pipe fittings are achieved by means of clamping blocks installed on the two clamping plates. The clamping blocks act on the connecting ears at both ends of the arc-shaped portion of the fire-fighting pipe fittings.

8. The automatic loading and unloading equipment for thread tapping of fire-fighting pipe fittings according to claim 1 is characterized in that: The purging device comprises a cover body, which is arranged across the track plate, with blocking cloths on the front and rear sides of the cover body, a material receiving cover is arranged below the cover body, and an air nozzle extends into the cover body.

9. The automatic loading and unloading equipment for thread tapping of fire-fighting pipe fittings according to claim 1 is characterized in that: The material receiving device comprises two material receiving bins, and the two material receiving bins are driven by a transposition motor to realize station switching.

10. The automatic loading and unloading equipment for thread tapping of fire-fighting pipe fittings according to any one of claims 1 to 9, characterized in that: The two loading plate chain lines are arranged in parallel and at intervals, and the multi-degree-of-freedom manipulator is located between the two loading plate chain lines. Each loading plate chain line is equipped with a track conveyor line, a purge device, and a material receiving device. The multi-degree-of-freedom manipulator alternately loads materials between the two workstations.

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