Punching device for main pipe of metal exhaust pipe

Abstract

The utility model discloses a metal exhaust pipe main pipe punching device which comprises a punching assembly and a second rotary fixing assembly, the punching assembly and the second rotary fixing assembly correspond to the two ends of a main pipe respectively, a bearing assembly is arranged between the punching assembly and the second rotary fixing assembly, and a conveying assembly is installed below the bearing assembly. The punching assembly is internally provided with a punching position for the end of the main pipe to penetrate. The second rotary fixing assembly is connected with the third translation assembly and used for driving the punching assembly to be pushed in the direction and driving the punching assembly to rotate. The bearing assembly can be opened and closed so that the main pipe can fall into the conveying assembly, the main pipe can be fixed and driven to rotate at the same time based on the special structure of the second rotary fixing assembly, the function of main pipe position switching is achieved, and the surface can be evenly punched so that the machining requirement can be met. And in addition, the bearing assembly enables the machined main pipe to naturally fall into the conveying assembly through the opening and closing function, the main pipe does not need to be taken out of the bearing assembly, and the feeding and discharging efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of exhaust pipe manufacturing equipment, in particular to a main metal exhaust pipe punching device. Background Art

[0002] Gas water heaters use liquefied petroleum gas or natural gas as fuel. The heat generated by combustion is transferred to the water through a heat exchanger to heat it up. The gases generated during combustion need to be discharged to the outside world. Therefore, each combustion water heater will have an exhaust pipe, which usually has a straight section and a curved section. Usually, the exhaust pipe is produced in sections. Because if an integrated molding method is adopted, in order to accommodate the long metal pipe while keeping the steps unchanged, each placement position needs to be made very long, and the processing equipment needs to be made very large. Therefore, basically, segmented production is adopted, that is, the main pipe and the short pipe are produced separately. However, the current production process still requires a lot of manual assistance, and there is no complete automated assembly line production. Materials need to be continuously transferred and processed, which results in long production time and low efficiency.

[0003] In order to solve the above problems, the company has developed a full-process exhaust pipe production line to achieve automated application. Figure 1 As shown, the specific steps include main pipe front section processing 1, main pipe punching 2, main pipe end cover installation 3, short pipe corrugation 4, main pipe and short pipe assembly and bending 5; this application is for the protection of the main pipe punching structure;

[0004] In addition, there are many devices for punching metal pipes, but most of them only punch a certain position of the metal pipe. The difference of this product is that it needs to punch holes evenly on the outer circumference of the main pipe, that is, it needs to be rotated and switched. Therefore, the current punching device cannot meet the needs of this product. Utility Model Content

[0005] The purpose of the utility model is to provide a metal exhaust pipe main pipe punching device to solve the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A metal exhaust pipe main pipe punching device includes a punching assembly and a rotating fixing assembly, which correspond to the two ends of the main pipe respectively, a bearing assembly is provided between the two, and a conveying assembly is installed below the bearing assembly;

[0008] The punching assembly is provided with a punching position for the end of the main pipe to penetrate;

[0009] The second rotating fixed component is connected to the third translation component, and is used to drive the punching component to advance and rotate.

[0010] The carrying assembly can be opened and closed to allow the main pipe to fall into the conveying assembly.

[0011] A further technical solution is that the rotating fixed component two includes a movable seat, on which a driver three is installed, which is rotatably connected to a resettable fixed claw and a cylinder three, a pull rod one is passed through the fixed claw, the pull rod one passes through the fixed claw and is rotatably connected to a connecting piece one, the connecting piece one is connected to the output end of the cylinder three, and the driver three is transmission-connected to the fixed claw.

[0012] According to a further technical solution, the fixing claw includes a hollow connecting shaft, through which the pull rod 1 is inserted, and a plurality of limiting grooves connected to the interior are provided in an annular array on the outer periphery of the connecting shaft, and a floating block is provided in the limiting groove, and one end of the floating block extends to the interior and is pushed out by the pull rod 1.

[0013] According to a further technical solution, an inclined clamping portion is provided at one end of the floating block, and an inclined clamping groove is provided on an outer periphery of the pull rod to cooperate with the clamping portion.

[0014] According to a further technical solution, a cylinder four is installed on the movable seat, and an output end of the cylinder four is connected to a push plate, and a hole is provided in the push plate for the fixed claw to pass through.

[0015] A further technical solution is that the bearing assembly includes two relatively arranged brackets 2, each bracket 2 is rotatably connected to two supporting arms, each supporting arm is provided with an inclined bar hole 2, a movable rod is passed through the bar hole 2, and the movable rod passes through the vertically arranged bar hole 3, the bar hole 3 is provided on the bracket 2, and a cylinder 5 is provided on the bracket 2, and the cylinder 5 is connected to the two ends of the movable rod through a connecting member 2.

[0016] A further technical solution is that a cylinder six is ​​horizontally provided on each of the two brackets two, the output end of the cylinder six is ​​connected to a movable plate, the two ends of the movable plate are connected to a supporting part through a fixed rod, and the supporting part is located above the supporting arm.

[0017] According to a further technical solution, both ends of the two brackets 2 are respectively fixed by connecting members 3, and a guide channel is provided on the connecting member 3, and the guide channel corresponds to the supporting position formed by a plurality of supporting arms.

[0018] A further technical solution is that the punching assembly includes a fixing seat 2, on which a driver 4 is installed, and the output end of the driver 4 is connected to a number of punching needles. The punching position is located below the punching needles, and a contour cylinder is provided inside the contour cylinder, and the contour cylinder is provided with a number of leakage holes corresponding to the punching needles.

[0019] According to a further technical solution, the profiling cylinder is detachably connected to the punching position.

[0020] Beneficial effects of the utility model:

[0021] The special structure of the rotating fixing component 2 of the utility model can fix the main pipe and drive it to rotate at the same time, realizing the function of switching the main pipe position, so that it can perform uniform drilling operations on the surface to meet processing requirements;

[0022] In addition, the carrying component can open and close to allow the processed main pipe to fall naturally into the conveying component, without having to take it out from the carrying component, thereby improving the efficiency of loading and unloading.

[0023] Other features and advantages of the present invention will be described in detail in the subsequent detailed description of the embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 : Distribution map of automated production equipment.

[0025] Figure 2 : A three-dimensional structural diagram of the utility model.

[0026] Figure 3 : Structural diagram of the punching assembly and the rotating fixed assembly of the present invention.

[0027] Figure 4 : Structural diagram of the second rotating fixed component of the present invention.

[0028] Figure 5 : Structural diagram of the fixed claw of the present utility model.

[0029] Figure 6 : The structural diagram of the load-bearing component of the present utility model.

[0030] Reference numerals: 21-punching assembly, 211-fixed seat 2, 212-driver 4, 213-punching needle, 214-punching position, 215-profile cylinder, 22-rotating fixed assembly 2, 221-moving seat, 222-driver 3, 223-fixed claw, 2231-connecting shaft, 2232-limiting groove, 2233-floating block, 2234-arc-shaped contact part 1, 2235-clamping part, 2241-cylinder 3, 2242-connecting piece 1, 22 51-Pull rod one, 2252-Inclined slot, 226-Cylinder four, 227-Push plate, 23-Bearing assembly, 231-Bracket two, 2321-Supporting arm, 2322-Hole two, 2323-Movable rod, 2324-Hole three, 2325-Cylinder five, 2326-Connector two, 2331-Cylinder six, 2332-Movable plate, 2333-Fixed rod, 2334-Supporting part, 2341-Connector three, 2342-Guide channel. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0032] Please refer to Figure 1-6 ;

[0033] The punching device described in the present invention is designed to dynamically switch the position of the main pipe and can evenly punch holes around the outer circumference of the main pipe. Usually, the device is used in conjunction with a production line, but in actual production, it can be used alone or in conjunction with a feeding assembly. Moreover, according to actual conditions, multiple devices with the same structure can be arranged side by side to form multiple workstations to improve production efficiency. The structure of one of the devices will be described below.

[0034] Specifically, it includes a punching assembly 21 and a second rotating and fixing assembly 22, which correspond to the two ends of the main pipe respectively. A carrying assembly 23 is provided between the two, and a conveying assembly (not shown) is installed below the carrying assembly 23. During operation, the main pipe is placed on the carrying assembly 23 through the loading assembly, so that the two ends of the main pipe correspond to the punching assembly 21 and the second rotating and fixing assembly 22 respectively. Then, the third translation assembly drives the rotating and fixing assembly to move toward the punching assembly 21. The second rotating and fixing assembly 22 contacts the main pipe and fixes it, and pushes it to move toward the stamping assembly. Finally, the other end of the main pipe enters the punching position.

[0035] Then, the punching assembly 21 punches the main pipe. At the same time, after completing one punching operation, the rotating fixing assembly 22 will drive the main pipe to rotate and adjust the angle. For example, if six holes are required on the surface of the main pipe, the rotating fixing assembly 22 will drive the main pipe to rotate five times. After completion, the translation assembly 3 drives the rotating fixing assembly 22 to move away from the punching assembly 21, and at the same time drives the main pipe to move so that one end is withdrawn from the punching position 214. Then, the rotating fixing assembly 22 releases the other end of the main pipe and continues to retreat.

[0036] At this time, the punched main pipe is placed on the carrying assembly 23. A conveying assembly is provided below the carrying assembly 23. The carrying assembly 23 opens to allow the main pipe to fall into the conveying assembly, and then closes to wait for another main pipe to be processed.

[0037] The special structure of the rotating fixing component 22 of the utility model can fix the main pipe and drive it to rotate at the same time, realizing the function of switching the main pipe position, so that it can perform uniform drilling operations on the surface to meet processing requirements;

[0038] In addition, the carrying assembly 23 can naturally drop the processed main pipe into the conveying assembly through the opening and closing function, without having to take it out from the carrying assembly 23, thereby improving the efficiency of loading and unloading.

[0039] One embodiment of the present invention regarding the rotating fixing assembly 22, referring to Figure 3 and Figure 4 , specifically including a moving seat 221, a driver three 222 is installed on the moving seat 221, a fixed claw 223 that is rotatably connected and can be reset, and a cylinder three 2241, a pull rod 1 2251 is passed through the fixed claw 223, and the fixed claw 223 in this embodiment can expand to expand the outer diameter, and contract to reset it, and the pull rod 1 2251 passes through the fixed claw 223 and is connected to the output end of the cylinder three 2241 through the connecting piece 1 2242. Preferably, the pull rod 1 2251 needs to rotate with the fixed claw 223, so the pull rod 1 2251 and the connecting piece 1 2242 are rotatably connected, and the driver three 222 is transmission-connected to the fixed claw 223. In one embodiment, the fixed claw 223 is divided into a movable part and a fixed part, wherein the movable part is used for expansion and contraction, and the fixed part passes through the moving seat 221, and a bearing is provided between the two to enable smooth rotation, and the fixed part passing through the moving seat 221 is connected to the driver three 222;

[0040] In the initial state, the fixed outer diameter is smaller than the inner diameter of the main pipe, so it can enter the main pipe, and then the cylinder three 2241 pulls the pull rod one 2251. For example, the end of the pull rod one 2251 is provided with a conical interference part. The pull rod one 2251 is retracted to make the interference part enter the fixed claw 223 to make it expand, that is, the outer diameter becomes larger and interferes with the inner wall of the main pipe to achieve fixation. Maintaining this state, the driver three 222 drives the fixed claw 223 to rotate, and the pull rod one 2251 rotates synchronously with the connecting piece one 2242, that is, the rotation of the main pipe is achieved. After completion, the cylinder three 2241 pushes the pull rod one 2251 out, that is, the interference part is pushed out of the fixed claw 223 to reset it, that is, the outer diameter of the fixed claw 223 is reduced to make it smaller than the inner diameter of the main pipe, so that it can withdraw from the main pipe.

[0041] This embodiment is further described with reference to the fixing claw 223. Figure 5Specifically, it includes a hollow connecting shaft 2231, the hollow position of the rotating shaft is for the pull rod 2251 to penetrate, and a plurality of limiting grooves 2232 are provided in an annular array on the outer periphery of the connecting shaft 2231 and communicated with the interior, and a floating block 2233 is provided in the limiting groove 2232, and one end of the floating block 2233 extends to the interior; preferably, the limiting groove 2232 adopts a fan-shaped design, then the floating block 2233 also has a fan-shaped structure, and the other end of the floating block 2233 extends to the outside to form an arc-shaped contact portion 2234. In the initial contraction state, the plurality of arc-shaped contact portions 2234 are close to each other to form a cylindrical shape covering the outer periphery of the connecting shaft 2231. When expanded, several floating blocks 2233 move outward to expand the outer diameter, that is, gaps are formed between several arc-shaped resistance parts 2234. The larger the gap, the larger the outer diameter. However, even after the arc-shaped resistance part 2234 has a gap, it still forms a cylindrical outline. External force is uniformly applied in all directions of the inner diameter of the main pipe, which can increase the contact area and prevent the main pipe from deformation. One of the reset methods of the floating block 2233 is to set a circular tension spring on the outer periphery to tighten it. Of course, this requires the provision of an embedded groove to prevent protrusion from deforming the main pipe. When subjected to external force, several floating blocks 2233 are stretched open, and when the external force is removed, they shrink and reset under the action of the tension spring.

[0042] The present invention proposes another mode of action of the floating block 2233, wherein one end of the floating block 2233 is provided with an inclined clamping portion 2235, and the outer periphery of the pull rod 1 2251 is provided with an inclined clamping groove 2252 that cooperates with the clamping portion 2235, that is, the floating block 2233 is connected to the pull rod 1 2251, and the floating block 2233 will not be separated from the pull rod 1 2251 by the clamping method; different from the above-mentioned usage method is that the cylinder three 2241 pushes the pull rod 1 2251 to push the floating block 2233 out; first, the floating block 2233 is limited to only longitudinal movement, and when the cylinder three 2241 pushes the pull rod 1 2251, the inclined clamping groove 2252 on the pull rod 1 2251 becomes higher and higher, thereby pushing the floating block 2233 out, and conversely, the inclined clamping groove 2252 becomes lower and lower, and the floating block 2233 will also drop and reset.

[0043] Due to the setting of the supporting component 23, the fixed claw 223 will not contact the main pipe during the process of entering it. In order to speed up the material withdrawal, a cylinder 4 226 is installed on the movable seat 221. The output end of the cylinder 4 226 is connected to a push plate 227. A hole is provided in the push plate 227 for the fixed claw 223 to pass through. The inner diameter of the hole is adapted to the outer diameter of the fixed claw 223. Therefore, the push plate 227 can push the main pipe out. Specifically, after the punching is completed, when the main pipe reaches the position of the supporting component 23, the rotating fixed component 22 retreats as a whole, the fixed claw 223 contracts, and the cylinder 4 226 is actuated to make the push plate 227 move forward, against the end of the main pipe, so that the main pipe maintains its current position, and avoids it from deviating from its position when the rotating fixed component 22 retreats as a whole.

[0044] One embodiment of the load-bearing assembly 23 of the present invention is shown in FIG. Figure 6 Specifically, it includes two brackets 231 arranged opposite to each other, each bracket 231 is rotatably connected to two supporting arms 2321, and a total of four supporting arms 2321 are provided on the two brackets 231. The two opposing supporting arms 2321 form a group, and each supporting arm 2321 is provided with an inclined bar hole 2322, and a movable rod 2323 is passed through the bar hole 2322, and the movable rod 2323 passes through the vertical bar hole 3 2324, and the bar hole 3 2324 is provided on the bracket 231. The bracket 23 1 is provided with a cylinder five 2325, and the cylinder five 2325 is connected to the two ends of the movable rod 2323 through the connecting piece two 2326; the cylinder five 2325 drives the connecting piece two 2326 to move, so that the movable rod 2323 moves vertically up and down along the bar hole, and at the same time changes the position of the movable rod 2323 in the bar hole two 2322, so that it can realize the opening and closing action; preferably, the cylinder five 2325 is vertically arranged, and its output end is connected to the crossbeam, and the crossbeam section is connected to the connecting rod, and the two connecting rods are respectively connected to the two ends of the movable rod 2323.

[0045] In addition, a pre-placed space is provided on the bearing assembly 23, which can effectively improve the loading efficiency and reduce the waiting time. Specifically, a cylinder 6 2331 is horizontally provided on the two brackets 231, and the output end of the cylinder 6 2331 is connected to a movable plate 2332. The two ends of the movable plate 2332 are connected to a supporting part 2334 through a fixed rod 2333. The supporting part 2334 is located above the supporting arm 2321. When there is no main pipe at the supporting position, the supporting parts 2334 on the opposite sides are in a far-away state. The pipe enters the reserved position. After the main pipe falls into the supporting position, the supporting parts 2334 on both sides are driven by cylinder six 2331 to approach each other to form a pre-placement position. The loading component can place a main pipe in this pre-placement position. After the punching of the main pipe below is completed and released to the conveying component, the supporting arm 2321 is washed and closed again. Driven by cylinder six 2331, the supporting parts 2334 are moved away from each other and opened, so that the main pipe in the pre-placement position falls into the supporting position, and then closed again to form the pre-placement position.

[0046] Furthermore, both ends of the two brackets 231 are fixed by connecting pieces 3 2341 respectively. A guide channel 2342 is provided on the connecting piece 3 2341 . The guide channel 2342 corresponds to the supporting position formed by the supporting arms 2321 or the pre-placement position.

[0047] One embodiment of the punching assembly 21 of the present invention specifically includes a second fixing seat 211, on which a fourth driver 212 is installed. The fourth driver 212 can be a hydraulic cylinder or an electric cylinder, etc. The output end of the driver 212 is connected to a plurality of punching needles 213, and a punching position 214 is located below the punching needles 213, and a profiling cylinder 215 is provided inside the punching position 214. The punching position 214 is provided with a plurality of guide holes for the punching needles 213 to pass through, and the profiling cylinder 215 is provided with a plurality of leakage holes corresponding to the punching needles 213. When the main pipe enters the punching position 214, the profiling cylinder 215 will also be inserted into the main pipe.

[0048] Preferably, the profiling cylinder 215 is hollow inside and has an opening on one side, and the waste formed by punching will fall into the hollow position. In this embodiment, the profiling cylinder 215 is detachably connected to the punching position 214 and can be removed for cleaning.

[0049] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0050] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementations that can be understood by those skilled in the art.

Claims

1. A metal exhaust pipe main punching device, characterized by: It comprises a punching assembly (21) and a second rotating fixing assembly (22), which respectively correspond to the two ends of the main pipe, a bearing assembly (23) is provided between the two, and a conveying assembly is installed below the bearing assembly (23); The punching assembly (21) is provided with a punching position for the end of the main pipe to penetrate; The second rotating fixed component (22) is connected to the third translation component, and is used to drive the punching component (21) to advance and rotate. The carrying assembly (23) can be opened and closed to allow the main pipe to fall into the conveying assembly.

2. The metal exhaust pipe main punching device according to claim 1, characterized in that: The rotating fixed component 2 (22) includes a moving seat (221), on which a driver 3 (222) is installed, a fixed claw (223) that is rotatably connected to be reset, and a cylinder 3 (2241), a pull rod 1 (2251) is passed through the fixed claw (223), and the pull rod 1 (2251) passes through the fixed claw (223) and is rotatably connected to the connecting piece 1 (2242), the connecting piece 1 (2242) is connected to the output end of the cylinder 3 (2241), and the driver 3 (222) is transmission-connected to the fixed claw (223).

3. The metal exhaust pipe main pipe punching device according to claim 2, characterized in that: The fixed claw (223) includes a hollow connecting shaft (2231), through which the pull rod (2251) passes. A plurality of limiting grooves (2232) connected to the interior are provided in an annular array on the outer periphery of the connecting shaft (2231). A floating block (2233) is provided in the limiting groove (2232). One end of the floating block (2233) extends to the interior and is pushed out by the pull rod (2251).

4. The metal exhaust pipe main pipe punching device according to claim 3, characterized in that: One end of the floating block (2233) is provided with an inclined clamping portion (2235), and the outer periphery of the pull rod (2251) is provided with an inclined clamping groove (2252) that cooperates with the clamping portion (2235).

5. The metal exhaust pipe main pipe punching device according to claim 2, characterized in that: A cylinder four (226) is installed on the movable seat (221), and the output end of the cylinder four (226) is connected to a push plate (227). The push plate (227) is provided with a hole for the fixed claw (223) to pass through.

6. The metal exhaust pipe main pipe punching device according to claim 1, characterized in that: The bearing assembly (23) includes two brackets (231) arranged opposite to each other, each bracket (231) is rotatably connected to two supporting arms (2321), each supporting arm (2321) is provided with a second inclined bar hole (2322), a movable rod (2323) is passed through the second bar hole (2322), the movable rod (2323) passes through a vertically arranged bar hole (2324), the bar hole (2324) is arranged on the bracket (231), and a cylinder (2325) is provided on the bracket (231), and the cylinder (2325) is connected to both ends of the movable rod (2323) through a connecting piece (2326).

7. The metal exhaust pipe main pipe punching device according to claim 6, characterized in that: Cylinder six (2331) is horizontally provided on each of the two second brackets (231), the output end of the cylinder six (2331) is connected to a movable plate (2332), and both ends of the movable plate (2332) are connected to a supporting portion (2334) through a fixing rod (2333), and the supporting portion (2334) is located above the supporting arm (2321).

8. The metal exhaust pipe main pipe punching device according to claim 7, characterized in that: The two ends of the two brackets (231) are respectively fixed by connecting members (2341). A guide channel (2342) is provided on the connecting member (2341). The guide channel (2342) corresponds to the supporting position formed by the plurality of supporting arms (2321).

9. The metal exhaust pipe main pipe punching device according to claim 1, characterized in that: The punching assembly (21) comprises a second fixing seat (211), a fourth driver (212) is mounted on the second fixing seat (211), the output end of the fourth driver (212) is connected to a plurality of punching needles (213), a punching position (214) is located below the punching needles (213), and a profiling cylinder (215) is provided inside the profiling cylinder (215), and a plurality of leak holes corresponding to the punching needles (213) are provided on the profiling cylinder (215).

10. The metal exhaust pipe main pipe punching device according to claim 9, characterized in that: The contoured cylinder (215) is detachably connected to the punching position (214).

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