Automatic pipe cutting equipment for chair processing

Abstract

The present invention relates to the technical field of automatic cutting of pipe fittings for chair processing, and specifically to an automatic cutting device for pipe fittings for chair processing, comprising: a clamping mechanism and a cutting mechanism are provided on the upper side of a processing table, and a conveying mechanism is provided on the upper side and right side of the processing table; the present invention can realize layered independent constraint of long pipes arranged in an array through the layered clamping part in the clamping mechanism, thereby providing precise positioning support for each pipe in the vertical and horizontal directions, eliminating the contact pressure between adjacent pipes; the present invention can accurately spray and cover the cutting area of ​​each pipe with coolant through multi-channel independent injection through the cooling part in the clamping mechanism; the present invention guides the formed fixed-length pipe fittings through the conveying mechanism, thereby realizing the lateral rolling discharge of the formed pipe fittings, thereby avoiding the curling or oval deformation of the pipe fitting port due to direct collision with the ground or the discharged pipe fittings.

Description

Technical Field

[0001] The present invention relates to the technical field of automatic cutting of pipe fittings for chair processing, in particular to automatic cutting equipment for pipe fittings for chair processing. Background Art

[0002] A beach chair is a portable seat designed for outdoor leisure. It is popular for its lightness and portability. The frame of a beach chair is mainly composed of multiple pipes. While ensuring the required strength, the wall thickness of these pipes is usually reduced as much as possible to minimize the weight of the frame.

[0003] In the existing technology, beach chair frame pipe fittings are generally processed in continuous batches through multi-station automatic cutting equipment: first, the arrayed long pipes are synchronously pushed to the cutting station with a fixed length through a conveying device, and are uniformly clamped and positioned up and down by a clamping device. Then, the entire row of long pipes is uniformly cut in batches by a high-speed cutting disc. During the cutting process, coolant is sprayed to control the temperature of the cutting disc and the cutting position of the long pipes. After the cutting is completed, the clamping mechanism automatically resets, and the conveying device circulates and pushes the long pipes at a fixed length. The cut and formed fixed-length frame pipe fittings are then pushed in the same direction by the remaining long pipes to complete the unloading, thereby realizing batch and continuous cutting processing of the pipe fittings.

[0004] However, the traditional method of batch continuous cutting of beach chair frame pipe fittings has the following problems: 1. In the prior art, when the long pipes arranged in an array are positioned by uniform upper and lower clamping, due to the thin wall thickness of the pipes and the dense array arrangement, adjacent pipes will contact and squeeze each other under the action of the clamping force. When the pipes are subjected to the superposition of multi-directional stresses, local depression or axial bending deformation will easily occur. This deformation will be further amplified due to the interaction between the pipes during the cutting process, resulting in offset of the pipe cutting section or misalignment of the pipe fitting size, thereby affecting the cutting accuracy of the finished pipe fittings and the consistency of the quality of the same batch; 2. In the prior art, when the multi-layer pipes arranged densely in an array are uniformly cut, the physical obstruction of the coolant by the upper pipe will make it difficult for the coolant to penetrate in time. The cutting area of ​​the middle and lower pipes can be effectively covered by the cutting disc through the gaps between the pipes, which will result in poor cooling effect of the cutting disc edge and the blocked cutting surface of the middle and lower pipes and form heat accumulation, thereby aggravating the wear of the cutting disc edge and affecting the overall accuracy and consistency of the pipe cutting section; 3. In the prior art, when the formed pipe fittings are synchronously axially advanced with the long pipes to leave the cutting station, due to the thin wall thickness of the pipe fittings and the lack of a buffer guide device at the end, the free end of the cut formed pipe fittings is prone to collide with the ground or the cut pipe fittings under the action of gravity, resulting in curling or oval deformation of the pipe fitting end, causing the problem of misalignment of the pipe fitting joint surface size during the subsequent assembly of the beach chair frame, seriously affecting the assembly tightness and mechanical stability of the beach chair frame structure, and thus affecting the consumer's use experience and safety. Summary of the Invention

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: an automatic cutting device for pipe fittings used for chair processing, comprising a processing table, a clamping mechanism for layered clamping of long pipes is provided on the upper side of the processing table, a conveying mechanism for guiding and conveying blanked and formed pipe fittings is provided on the upper side and right side of the processing table, and a cutting mechanism for batch cutting and processing of long pipes is provided on the upper side of the processing table and to the right of the clamping mechanism.

[0006] The clamping mechanism includes a fixing frame that is symmetrically fixed on the upper side of the processing table in the front and rear directions. The fixing frame is composed of a mounting plate 1 that is symmetrical in the left and right directions and a mounting plate 2 that is symmetrically installed up and down between the mounting plate 1. A layered clamping part is provided on the fixing frame, a cooling part is provided on the layered clamping part, and a confluence part is provided on the left side of the front fixing frame.

[0007] The conveying mechanism includes a guide rail 1 fixedly arranged on the upper side of the processing table and located at the left rear of the clamping mechanism, a linked conveying part is commonly provided on the upper side of the processing table and the guide rail 1, a material guiding part and a positioning clamping part are arranged in front and behind the linked conveying part, a docking input part is commonly provided on the left side of the material guiding part and the rear side of the confluence part, and a material guide rack is provided on the right front of the material guiding part.

[0008] The cutting mechanism includes two guide rails fixedly arranged on the upper side of the processing table in a front-to-back symmetrical manner, and a cutting part is commonly arranged on the two guide rails in a front-to-back symmetrical manner.

[0009] Preferably, the layered clamping portion includes a plurality of groups of pipe clamps evenly arranged between the upper and lower symmetrical mounting plates, each group of pipe clamps consists of the upper and lower symmetrical pipe clamps, and the opposite sides of the upper and lower symmetrical pipe clamps are evenly provided with a plurality of U-shaped grooves for positioning the pipes, the upper pipe clamps in each group are fixedly connected by a connecting rod 1, and the lower pipe clamps in each group are fixedly connected by a connecting rod 2, and the opposite sides of the uppermost and lowermost pipe clamps are symmetrically fixed with a guide rod 1 that is slidably connected to the corresponding mounting plate 2 and moves up and down, and the opposite sides of the upper and lower symmetrical mounting plates 2 are fixed with a cylinder 1, the telescopic end of the upper cylinder 1 is fixedly connected to the upper surface of the uppermost pipe clamp, and the telescopic end of the lower cylinder 1 is fixedly connected to the lower surface of the lowermost pipe clamp.

[0010] Preferably, the cooling part includes an injection groove opened on the pipe clamp and passing through to the left, and a plurality of injection holes corresponding to the U-shaped grooves and connected to the corresponding injection grooves front and back are evenly opened on the left and right sides of the opposite side of the front and rear symmetrical pipe clamp. A liquid injection port connected to the corresponding injection grooves left and right is fixedly provided on the left side of the pipe clamp.

[0011] Preferably, the confluence part includes a confluence pipe fixedly arranged symmetrically on the left side of the front fixing frame through a support 1, an input pipe connected front to back is fixedly arranged on the front side of the confluence pipe, and a plurality of liquid outlets connected front to back and corresponding one to one with the liquid injection ports on the pipe splint in the corresponding fixing frame are evenly fixedly arranged on the upper and lower sides of the rear side of the confluence pipe, the liquid outlet on the right confluence pipe is connected to the liquid injection port on the corresponding pipe splint on the front side through a hose 1, and the liquid outlet on the left confluence pipe is connected to the liquid injection port on the corresponding pipe splint on the rear side through a hose 2.

[0012] Preferably, the linked conveying part includes an electric slider 1 that is slidably arranged on a guide rail 1 and moves back and forth. A fixed table is fixedly arranged on the upper side of the electric slider 1. A guide rod 2 is symmetrically fixedly arranged on the upper side of the processing table and located in the left front of the clamping mechanism through a support 2. A sliding table that moves back and forth is slidably arranged on the left and right symmetrical guide rods 2. A linkage rod is symmetrically fixedly arranged on the rear side of the sliding table and the rear end is fixedly connected to the fixed table through a support 3.

[0013] Preferably, the positioning clamping part includes a cylinder 2 fixedly arranged on the left side of the upper surface of the fixed platform through a support 4, an active splint that moves left and right is fixedly arranged on the telescopic end of the cylinder 2, a guide rod 3 that is symmetrically fixedly arranged on the upper and lower sides of the active splint close to the support 4 and is slidably connected to the support 4, a fixed splint that cooperates with the active splint for clamping is fixedly arranged on the right side of the upper surface of the fixed platform, and an anti-slip pad is fixedly arranged on the side opposite to the active splint.

[0014] Preferably, the material guiding part includes a rotating cylinder which is symmetrically fixed to the right side of the sliding table through a U-shaped connecting frame with an opening facing right, and a rotating table is installed on the opposite sides of the rotating cylinders. A plurality of L-shaped supporting brackets corresponding to each group of pipe clamps are evenly fixed on the right side of the rotating table, and a plurality of protrusions are symmetrically fixed on the right side of the upper surface of the horizontal section of the L-shaped supporting bracket.

[0015] Preferably, the docking input part includes an infusion tube fixedly arranged on the left side of a rotating table that is symmetrical in front and back through a support five. The rear end of the infusion tube is equipped with a plug connector that is connected front and back, and the front end of the input tube is equipped with a docking connector that is connected front and back and plugged into the corresponding plug connector. Elastic covers that move back and forth are elastically slidably provided in the plug connector and the docking connector. The corresponding plug connector and the elastic covers in the docking connector are symmetrically distributed in front and back. A plurality of connecting holes that pass through front and back are evenly opened circumferentially on the elastic cover. A sealing member that seals with the corresponding plug connector or docking member is fixed on the opposite side of the front and back symmetrical elastic covers, and a push rod is fixed on the opposite side of the front and back symmetrical seals.

[0016] Preferably, the material guide rack includes mounting platforms symmetrically arranged front to back, a guide base is fixedly provided on the lower side between the front and rear symmetrical mounting platforms, a side guide plate is fixedly provided on the right side between the front and rear symmetrical mounting platforms, a plurality of wedge-shaped guide plates evenly distributed up and down and corresponding one to one with the L-shaped support bracket are fixedly provided on the left side between the front and rear symmetrical mounting platforms and the upper side of the guide base, the right side of the wedge-shaped guide plate is an inclined surface, and an L-shaped guide groove is formed between the mounting platform, the guide base, the side guide plate and the wedge guide plate.

[0017] Preferably, the cutting part includes two electric sliders that are symmetrically arranged to slide left and right on the guide rail two, and an L-shaped movable frame that moves left and right is fixedly arranged on the upper side of all the electric sliders two. A protective cover is installed on the left side of the vertical section of the L-shaped movable frame through a U-shaped support, and a cutting disk is rotatably installed in the protective cover, and a motor with a driving end fixedly connected to the cutting disk is installed on the front side of the U-shaped support.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The present invention can realize layered independent constraint of long tubes arranged in an array through the layered clamping part in the clamping mechanism, thereby providing precise positioning support for each tube in the vertical and horizontal directions, eliminating the contact pressure between adjacent tubes, and avoiding local depression or axial bending deformation between tubes due to multi-point extrusion under dense arrangement, thereby significantly improving the overall cutting accuracy of the pipe fittings and the consistency and stability of the quality of the same batch.

[0019] 2. The present invention uses the cooling unit in the clamping mechanism to achieve precise cooling liquid spray coverage of the cutting area of ​​each pipe through multi-channel independent injection, thereby enabling timely and accurate cooling of each pipe cutting area and the cutting edge of the cutting disk, avoiding the situation where the cutting edge of the cutting disk and the obscured cutting surface of the middle and lower layers of the pipe have poor cooling effect and form heat accumulation, thereby not only reducing the wear rate of the cutting edge, but also significantly improving the overall accuracy and consistency of the pipe cutting section.

[0020] 3. The present invention guides the formed fixed-length pipe fittings through a conveying mechanism, which can realize the horizontal rolling discharge of the formed pipe fittings, thereby avoiding the curling or oval deformation of the pipe fitting ends due to direct impact with the ground or the discharged pipe fittings, ensuring the dimensional matching and assembly tightness of the pipe fitting plug-in mating surfaces during the subsequent assembly of the beach chair frame, thereby improving the overall assembly strength and safety of the beach chair. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the present invention.

[0022] Figure 2 It is a partial cross-sectional diagram of the clamping mechanism structure.

[0023] Figure 3 It is a partial cross-sectional diagram of the conveying mechanism structure.

[0024] Figure 4 It is a partial cross-sectional diagram of the structure of the linked conveying part.

[0025] Figure 5 It is a partial cross-sectional diagram of the docking input part structure.

[0026] Figure 6 It is a partial cross-sectional schematic diagram of the structure of the material guide part.

[0027] Figure 7 It is a partial cross-sectional diagram of the cutting mechanism structure.

[0028] In the figure: 1. Processing table; 2. Clamping mechanism; 21. Fixed frame; 22. Layered clamping part; 221. Pipe clamping plate; 222. Guide rod 1; 223. Cylinder 1; 23. Cooling part; 231. Injection groove; 232. Liquid injection port; 233. Injection hole; 24. Converging part; 241. Converging pipe; 242. Input pipe; 243. Liquid outlet; 3. Conveying mechanism; 31. Guide rail 1; 32. Linked conveying part; 321. Electric slide block 1; 322. Fixed table; 323. Guide rod 2; 324. Sliding table; 325. Linking rod; 33. Positioning clamping part; 331. Cylinder 2; 332. Active clamping plate; 3 33. Guide rod three; 334. Fixed splint; 34. Material guide part; 341. Rotary cylinder; 342. Rotating table; 343. L-shaped support bracket; 35. Docking input part; 351. Infusion tube; 352. Plug connector; 353. Docking connector; 354. Elastic cover; 355. Seal; 356. Push rod; 36. Material guide rack; 361. Mounting table; 362. Guide base; 363. Side guide plate; 364. Wedge-shaped guide plate; 4. Cutting mechanism; 41. Guide rail two; 42. Cutting part; 421. Electric slider two; 422. L-shaped moving frame; 423. Protective cover; 424. Cutting disc; 425. Motor. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] See also Figure 1An automatic pipe cutting device for chair processing includes a processing table 1, a clamping mechanism 2 for clamping long pipes in layers is provided on the upper side of the processing table 1, a conveying mechanism 3 for guiding and conveying blanking and forming pipes is provided on the upper side and right side of the processing table 1, and a cutting mechanism 4 for batch cutting and processing long pipes is provided on the upper side of the processing table 1 and to the right of the clamping mechanism 2.

[0031] See also Figure 1 and Figure 2 The clamping mechanism 2 includes a fixing frame 21 symmetrically fixed on the upper side of the processing table 1 in the front and rear directions. The fixing frame 21 is composed of a mounting plate 1 that is symmetrical left and right and a mounting plate 2 that is symmetrically installed up and down between the mounting plate 1. A layered clamping portion 22 is provided on the fixing frame 21. A cooling portion 23 for accurately cooling the cutting area of ​​the long pipe is provided on the layered clamping portion 22. A confluence portion 24 for inputting coolant to the cooling portion 23 is provided on the left side of the front fixing frame 21.

[0032] See also Figure 2 The layered clamping portion 22 includes multiple groups of pipe clamps 221 evenly arranged above and below between the two symmetrical mounting plates. Each group of pipe clamps 221 consists of upper and lower symmetrical pipe clamps 221. The opposite sides of the upper and lower symmetrical pipe clamps 221 are evenly provided with multiple U-shaped grooves for positioning pipes. The upper pipe clamps 221 in each group are fixedly connected by a connecting rod 1. The lower pipe clamps 221 in each group are fixedly connected by a connecting rod 2. The opposite sides of the upper and lower pipe clamps 221 are symmetrically fixed with a guide rod 1 222 that is slidably connected to the corresponding mounting plate 2 and moves up and down. The opposite sides of the upper and lower symmetrical mounting plates are fixedly provided with a cylinder 1 223. The telescopic end of the upper cylinder 1 223 is fixedly connected to the upper surface of the uppermost pipe clamp 221, and the telescopic end of the lower cylinder 1 223 is fixedly connected to the lower surface of the lower pipe clamp 221.

[0033] The upper cylinder 223 drives the pipe clamp 221 on the upper side of each group to move downward synchronously, and the lower cylinder 223 drives the pipe clamp 221 on the lower side of each group to move upward synchronously, so that each group of upper and lower symmetrical pipe clamps 221 move synchronously relative to each other until the long pipes between all the upper and lower symmetrical U-shaped grooves are synchronously and stably positioned and clamped. The above operation method can realize layered independent constraint of the long pipes arranged in the array, and through the precise positioning of each group of U-shaped grooves, it can provide precise positioning support for each pipe in the vertical and horizontal directions, eliminate the contact pressure between adjacent pipes, and avoid local depression or axial bending deformation between pipes due to multi-point extrusion under dense arrangement.

[0034] See also Figure 2The cooling part 23 includes an injection groove 231 opened on the pipe clamp 221 and passing through to the left. A plurality of injection holes 233 corresponding to the U-shaped grooves and connected to the corresponding injection grooves 231 front and back are evenly opened on the left and right sides of the opposite side of the front and rear symmetrical pipe clamp 221. A liquid injection port 232 connected to the corresponding injection grooves 231 left and right is fixedly provided on the left side of the pipe clamp 221.

[0035] See also Figure 2 and Figure 3 The confluence portion 24 includes a confluence pipe 241 symmetrically fixed to the left side of the front fixing frame 21 via a first support. A front-to-back connecting inlet pipe 242 is fixedly installed on the front side of the confluence pipe 241. Multiple front-to-back connecting outlets 243 are evenly fixedly installed on the upper and lower sides of the rear side of the confluence pipe 241, corresponding one-to-one with the liquid inlet 232 on the corresponding pipe clamping plate 221 in the fixing frame 21. The outlets 243 on the right confluence pipe 241 are connected to the liquid inlet 232 on the corresponding front pipe clamping plate 221 via a first hose. The outlets 243 on the left confluence pipe 241 are connected to the liquid inlet 232 on the corresponding rear pipe clamping plate 221 via a second hose. It should be noted that both the first and second hoses are made of a retractable material.

[0036] The coolant is continuously input into the corresponding manifold 241 through the input pipe 242, and the coolant is then input into the corresponding injection port 232 through the liquid outlet 243 and the corresponding hose 1 or hose 2. The coolant is then continuously input into the injection tank 231 and ejected from the corresponding injection hole 233. The coolant ejected from the injection hole 233 then accurately cools the cutting area of ​​the long pipe positioned and clamped in the corresponding U-shaped groove. The above-mentioned operation method can accurately cover the cutting area of ​​each pipe with coolant spray through multi-channel independent injection, so that the cutting area of ​​each pipe and the cutting edge of the cutting disk 424 can be timely and accurately cooled.

[0037] See also Figure 1 The cutting mechanism 4 includes a second guide rail 41 symmetrically fixedly arranged on the upper side of the processing table 1, and a cutting part 42 for batch cutting of long pipes is commonly provided on the second guide rail 41 symmetrically arranged on the front and back.

[0038] See also Figure 1 and Figure 7 The cutting part 42 includes two electric sliders 421 that are symmetrically slidable on the left and right guide rails 41. An L-shaped movable frame 422 that moves left and right is fixedly provided on the upper side of all the electric sliders 421. A protective cover 423 is installed on the left side of the vertical section of the L-shaped movable frame 422 through a U-shaped support. A cutting disk 424 is rotatably installed in the protective cover 423. A motor 425 with a driving end fixedly connected to the cutting disk 424 is installed on the front side of the U-shaped support.

[0039] When the long pipes that are independently clamped and positioned in layers need to be cut uniformly, the L-shaped movable frame 422 is driven to move to the left along the guide rail 41 by the electric slider 421, and at the same time, the cutting disk 424 is driven to rotate continuously by the motor 425 until the cutting disk 424 contacts the middle position of the clamped and positioned long pipe between the fixed frames 21, thereby achieving uniform cutting processing of the arrayed long pipes by continuously feeding the cutting disk 424 to the left, so as to obtain a fixed-length pipe fitting with the front end of the long pipe cut off.

[0040] See also Figure 1 and Figure 2 The conveying mechanism 3 includes a guide rail 31 fixedly arranged on the upper side of the processing table 1 and located at the left rear of the clamping mechanism 2. A linked conveying part 32 is commonly provided on the upper side of the processing table 1 and the guide rail 31. A material guiding part 34 and a positioning clamping part 33 are arranged in front and behind the linked conveying part 32. A docking input part 35 for inputting coolant to the confluence part 24 is commonly provided on the left side of the material guiding part 34 and the rear side of the confluence part 24. A material guide rack 36 for cooperating with the material guiding part 34 to guide the blanking and forming pipe fittings is provided in the right front of the material guiding part 34.

[0041] See also Figure 1 、 Figure 4 and Figure 5 The linked conveying part 32 includes an electric slider 321 that is slidably arranged on the guide rail 31 and moves back and forth. A fixed platform 322 is fixedly arranged on the upper side of the electric slider 321. A guide rod 2 323 is fixedly arranged symmetrically on the upper side of the processing table 1 and located in the left front of the clamping mechanism 2 through a support 2. A sliding platform 324 that moves back and forth is slidably arranged on the left and right symmetrical guide rods 2 323. A linkage rod 325 with a rear end fixedly connected to the fixed platform 322 through a support 3 is fixedly arranged on the rear side of the sliding platform 324.

[0042] The fixed platform 322 is driven by the electric slider 1 321 to move forward from the rear end of the guide rail 1 31 , and the fixed platform 322 then drives the sliding platform 324 to move forward synchronously along the guide rod 2 323 through the connecting rod 325 .

[0043] See also Figure 1 and Figure 4 The positioning clamping part 33 includes a cylinder 2 331 fixedly set on the left side of the upper surface of the fixed platform 322 through a support 4, and an active splint 332 that moves left and right is fixedly set on the telescopic end of the cylinder 2 331. A guide rod 333 that is symmetrically fixed to the upper and lower sides of the active splint 332 close to the support 4 is slidably connected to the support 4. A fixed splint 334 that cooperates with the active splint 332 is fixedly set on the right side of the upper surface of the fixed platform 322, and an anti-slip pad is fixedly set on the side opposite to the active splint 332.

[0044] When the long pipes arranged in the array are to be conveyed forward to a specific length synchronously, the cutting disc 424 is first moved to the right to reset and release the clamping constraint on the long pipe and the pipe cut on its front side, and then the active clamping plate 332 is driven to the right by the cylinder 2 331 until it cooperates with the fixed clamping plate 334 to clamp the long pipes arranged in the array synchronously and stably. Then, the fixed platform 322 is driven from the rear end of the guide rail 1 31 to the front end by the electric slider 1 321, and the active clamping plate 332 and the fixed clamping plate 334 then drive the clamped long pipes to be conveyed forward synchronously by the same distance, and the fixed-length pipe cut on the front side of the long pipe is then pushed forward synchronously until it is completely moved out of the clamping station, thereby realizing the synchronous fixed-length feeding of the long pipes arranged in the array, wherein the anti-slip pad can ensure that the active clamping plate 332 and the fixed clamping plate 334 can stably drive the long pipes to move synchronously.

[0045] See also Figure 1 、 Figure 5 and Figure 6 The material guiding portion 34 includes a rotating cylinder 341 which is symmetrically fixed to the right side of the sliding table 324 through a U-shaped connecting frame with an opening facing right. A rotating table 342 is installed on the opposite side of the symmetrical rotating cylinder 341. A plurality of L-shaped supporting brackets 343 corresponding to each group of pipe clamps 221 are evenly fixed on the right side of the front and back symmetrical rotating tables 342. A plurality of protrusions are symmetrically fixed on the right side of the upper surface of the horizontal section of the L-shaped supporting bracket 343.

[0046] See also Figure 1 and Figure 6 The guide rack 36 includes a mounting platform 361 symmetrically arranged front and back, a guide base 362 is fixedly provided on the lower side between the front and rear symmetrical mounting platforms 361, a side guide plate 363 is fixedly provided on the right side between the front and rear symmetrical mounting platforms 361, and a plurality of wedge-shaped guide plates 364 evenly distributed up and down and corresponding to the L-shaped support bracket 343 are fixedly provided on the left side between the front and rear symmetrical mounting platforms 361 and the upper side of the guide base 362. The right side of the wedge-shaped guide plate 364 is an inclined surface, and an L-shaped guide groove is formed between the mounting platform 361, the guide base 362, the side guide plate 363 and the wedge guide plate 364.

[0047] When the clamping constraint of the formed fixed-length pipe fitting is released, the formed pipe fitting contacts the upper surface of the horizontal section of the corresponding L-shaped support bracket 343. As the electric slider 1 321 drives the long pipe to be fed, the formed pipe fitting is pushed forward synchronously. At the same time, the sliding table 324 is also driven by the electric slider 1 321 through the U-shaped connecting frame to synchronously drive the rotating cylinder 341 and the rotating table 342 to move forward. The rotating table 342 then drives the L-shaped support bracket 343 to move forward synchronously and stably support the formed pipe fitting until the electric slider 1 321 moves to the front end of the guide rail 1 31 and completes the fixed-length feeding of the long pipe. At this time, the formed pipe fitting is just in contact with The wedge-shaped guide plate 364 corresponding to the left side of the guide rack 36 is aligned, and the rotating cylinder 341 drives the rotating table 342 and the L-shaped support bracket 343 to deflect to the right at a specific angle synchronously until the formed pipe fitting passes over the corresponding protrusion under the action of its own weight and rolls onto the corresponding wedge-shaped guide plate 364. The formed pipe fitting is guided by the right inclined surface of the wedge-shaped guide plate 364 and then rolls to the right into the L-shaped guide groove in the guide rack 36. Under the guidance of the L-shaped guide groove, it rolls stably to the ground to complete the unloading. The protrusions on the horizontal sections of the rotating table 342 and the L-shaped support bracket 343 can ensure that the formed pipe fitting will not roll left and right and fall during the forward movement.

[0048] The above-mentioned operation method can roll the formed pipe fittings horizontally, thereby avoiding the curling or oval deformation of the pipe fitting ends due to direct impact with the ground or the cut pipe fittings, ensuring the size matching and assembly tightness of the pipe fitting joint surfaces during the subsequent assembly of the beach chair frame, thereby improving the overall assembly strength and safety of the beach chair.

[0049] After the formed pipe fittings are cut, the long pipes fed at a fixed length are first stably positioned and clamped by the pipe clamp 221, and then the rotating table 342 and the L-shaped support bracket 343 are driven to rotate and reset by the rotating cylinder 341, and the fixed table 322 and the sliding table 324 are driven to move backward and reset synchronously by the electric slider 321. The horizontal section of the L-shaped support bracket 343 then moves again to the bottom of the front section of the corresponding long pipe, and at this time, the cutting process can be carried out again by the cutting disc 424.

[0050] See also Figure 1 、 Figure 3 and Figure 5The docking input part 35 includes an infusion tube 351 fixedly arranged on the left side of the rotating platform 342 with front and rear symmetry through the support five. The rear end of the infusion tube 351 is equipped with a plug connector 352 that is connected front and back. The front end of the input tube 242 is equipped with a docking connector 353 that is connected front and back and plugged into the corresponding plug connector 352. An elastic cover 354 that moves back and forth is elastically slidably provided in the plug connector 352 and the docking connector 353. The elastic covers 354 in the corresponding plug connector 352 and the docking connector 353 are symmetrically distributed front and back. A plurality of connecting holes that pass through front and back are evenly opened on the elastic cover 354 in the circumferential direction. A sealing member 355 that seals with the corresponding plug connector 352 or the docking connector 353 is fixed on the opposite side of the front and rear symmetrical elastic covers 354. A push rod 356 is fixed on the opposite side of the front and rear symmetrical seals 355.

[0051] When the sliding table 324 drives the rotating table 342 to move from the front end of the guide rod 2 323 to the rear end, the rotating table 342 drives the infusion tube 351 and its corresponding plug connector 352 to move backward synchronously until the plug connector 352 is fully inserted into the corresponding docking connector 353, and the corresponding push rods 356 in the plug connector 352 and the docking connector 353 are squeezed against each other, and the sealing member 355 drives the elastic cover 354 to move away from the corresponding push rod 356 and releases the seal at the same time, and the coolant in the infusion tube 351 is continuously discharged from the corresponding plug connector. The coolant is then injected into the connecting hole on the elastic cover 354 inside the butt joint 353. The coolant is then continuously injected into the corresponding manifold 241 through the inlet pipe 242, thereby continuously spraying and cooling the cutting area of ​​the long pipe. The above-mentioned operation method can adaptively deliver coolant to the injection hole 233 when the pipe cutting process is required, and adaptively stop the delivery of coolant when the formed pipe is unloaded, thereby avoiding the waste of coolant and saving the cost of the entire fixed-length pipe cutting process. It should be noted that to prevent the coolant from leaking out between the plug joint 352 and the butt joint 353, a rubber layer can be installed on the rear end of the plug joint 352.

[0052] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An automatic pipe cutting device for chair processing, including a processing table, characterized by: A clamping mechanism for clamping long pipes in layers is provided on the upper side of the processing table, a conveying mechanism for guiding and conveying blanked and formed pipes is provided on the upper side and right side of the processing table, and a cutting mechanism for batch cutting and processing long pipes is provided on the upper side of the processing table and on the right side of the clamping mechanism; The clamping mechanism includes a fixing frame fixedly arranged on the upper side of the processing table in a front-to-back symmetrical manner, the fixing frame is composed of a left-right symmetrical mounting plate 1 and a mounting plate 2 symmetrically mounted up and down between the mounting plate 1, a layered clamping portion is provided on the fixing frame, a cooling portion is provided on the layered clamping portion, and a confluence portion is provided on the left side of the front fixing frame; The conveying mechanism includes a guide rail 1 fixedly arranged on the upper side of the processing table and located at the left rear of the clamping mechanism, a linked conveying part is commonly provided on the upper side of the processing table and the guide rail 1, a material guide part and a positioning clamping part are arranged on the front and rear of the linked conveying part, a docking input part is commonly provided on the left side of the material guide part and the rear side of the confluence part, and a material guide rack is provided on the right front of the material guide part; The cutting mechanism includes two guide rails fixedly arranged on the upper side of the processing table in a front-to-back symmetrical manner, and a cutting part is commonly provided on the two guide rails in a front-to-back symmetrical manner; The material guiding part includes a rotating cylinder fixedly arranged symmetrically front and back on the right side of the sliding platform through a U-shaped connecting frame with an opening facing right, and a rotating platform is installed on the opposite side of the rotating cylinders. A plurality of L-shaped supporting brackets corresponding to each group of pipe clamps are evenly fixed on the right side of the rotating platform. A plurality of protrusions are fixedly arranged symmetrically front and back on the right side of the upper surface of the horizontal section of the L-shaped supporting bracket.

2. The automatic pipe cutting equipment for chair processing according to claim 1 is characterized in that: The layered clamping part includes multiple groups of pipe splints evenly arranged between the upper and lower symmetrical mounting plates, each group of pipe splints is composed of upper and lower symmetrical pipe splints, and the opposite sides of the upper and lower symmetrical pipe splints are evenly provided with multiple U-shaped grooves for positioning pipes, the upper pipe splints in each group are fixedly connected by a connecting rod, and the lower pipe splints in each group are fixedly connected by a connecting rod. The opposite sides of the uppermost and lowermost pipe splints are symmetrically fixed with a guide rod one that is slidably connected to the corresponding mounting plate two and moves up and down, and the opposite sides of the upper and lower symmetrical mounting plates two are fixed with a cylinder one, the telescopic end of the upper cylinder one is fixedly connected to the upper surface of the uppermost pipe splint, and the telescopic end of the lower cylinder one is fixedly connected to the lower surface of the lowermost pipe splint.

3. The automatic pipe cutting equipment for chair processing according to claim 2, characterized in that: The cooling part includes an injection groove opened on the pipe clamp and passing through to the left. A plurality of injection holes corresponding to the U-shaped grooves and connected to the corresponding injection grooves front and back are evenly opened on the left and right sides of the opposite side of the front and rear symmetrical pipe clamp. A liquid injection port connected to the corresponding injection grooves left and right is fixedly provided on the left side of the pipe clamp.

4. The automatic pipe cutting equipment for chair processing according to claim 3 is characterized in that: The confluence part includes a confluence pipe fixedly arranged on the left side of the front fixing frame symmetrically by a support 1, an input pipe connected front to back is fixedly arranged on the front side of the confluence pipe, and a plurality of liquid outlets connected front to back and corresponding to the liquid injection ports on the pipe splints in the corresponding fixing frame are evenly fixedly arranged on the upper and lower sides of the rear side of the confluence pipe, the liquid outlet on the right confluence pipe is connected to the liquid injection port on the corresponding pipe splint on the front side through a hose 1, and the liquid outlet on the left confluence pipe is connected to the liquid injection port on the corresponding pipe splint on the rear side through a hose 2.

5. The automatic pipe cutting equipment for chair processing according to claim 4 is characterized in that: The linked conveying part includes an electric slider 1 that is slidably arranged on a guide rail 1 and moves back and forth. A fixed table is fixedly arranged on the upper side of the electric slider 1. A guide rod 2 is symmetrically fixedly arranged on the upper side of the processing table and located in the left front of the clamping mechanism through a support 2. A sliding table that moves back and forth is slidably arranged on the left and right symmetrical guide rods 2. A linkage rod is symmetrically fixedly arranged on the rear side of the sliding table and the rear end is fixedly connected to the fixed table through a support 3.

6. The automatic pipe cutting equipment for chair processing according to claim 5, characterized in that: The positioning clamping part includes a cylinder 2 fixedly arranged on the left side of the upper surface of the fixed platform through a support 4, an active splint that moves left and right is fixedly arranged on the telescopic end of the cylinder 2, a guide rod 3 that is symmetrically fixedly arranged on the upper and lower sides of the active splint close to the support 4 and is slidably connected to the support 4, a fixed splint that cooperates with the active splint for clamping is fixedly arranged on the right side of the upper surface of the fixed platform, and an anti-slip pad is fixedly arranged on the side opposite to the active splint.

7. The automatic pipe cutting equipment for chair processing according to claim 1, characterized in that: The docking input part includes an infusion tube fixedly arranged on the left side of a rotating table that is symmetrical in front and back through a support five. The rear end of the infusion tube is equipped with a plug connector that is connected front and back, and the front end of the input tube is equipped with a docking connector that is connected front and back and plugged into and cooperates with the corresponding plug connector. Elastic covers that move back and forth are elastically slidably provided in the plug connector and the docking connector. The corresponding plug connector and the elastic covers in the docking connector are symmetrically distributed front and back. A plurality of connecting holes that pass through front and back are evenly opened circumferentially on the elastic cover. A sealing member that seals with the corresponding plug connector or docking member is fixedly provided on the opposite side of the front and back symmetrical elastic covers, and a push rod is fixedly provided on the opposite side of the front and back symmetrical seals.

8. The automatic pipe cutting equipment for chair processing according to claim 1 is characterized in that: The material guide rack includes mounting platforms symmetrically arranged front and back, a guide base fixedly arranged on the lower side between the front and back symmetrical mounting platforms, a side guide plate fixedly arranged on the right side between the front and back symmetrical mounting platforms, a plurality of wedge-shaped guide plates evenly distributed up and down and corresponding to the L-shaped support brackets fixedly arranged on the left side between the front and back symmetrical mounting platforms and the upper side of the guide base, the right side of the wedge-shaped guide plate is an inclined surface, and an L-shaped guide groove is formed between the mounting platform, the guide base, the side guide plate and the wedge guide plate.

9. The automatic pipe cutting equipment for chair processing according to claim 1, characterized in that: The cutting part includes two electric sliders that are symmetrically arranged to slide left and right on a guide rail two. An L-shaped movable frame that moves left and right is fixedly arranged on the upper side of all the electric sliders. A protective cover is installed on the left side of the vertical section of the L-shaped movable frame through a U-shaped support. A cutting disk is rotatably installed in the protective cover, and a motor with a driving end fixedly connected to the cutting disk is installed on the front side of the U-shaped support.

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