A multi-station reversing mechanism for a tube end forming machine

Abstract

The present invention discloses a multi-station reversing mechanism of a tube end forming machine, comprising a punch shaft, a rotary punch shaft, a fixed frame, a steering wheel rotatably connected in the fixed frame, a straight punch mechanism located behind the steering wheel, and a driving mechanism located below the steering wheel, wherein the punch shaft and the rotary punch shaft both penetrate the steering wheel, one end of the punch shaft is connected to the straight punch mechanism, a rotary punch mechanism is fixed above the straight punch mechanism, the rotary punch mechanism is connected to one end of the rotary punch shaft, and the driving mechanism drives the rotation of the steering wheel. The present invention sequentially realizes the replacement of different cutting tools, replacing the traditional method of requiring shutdown for replacement, and at the same time has the function of rotary processing, shortens the processing time, and improves processing efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of pipe processing, in particular to a multi-station reversing mechanism of a pipe end forming machine. Background Art

[0002] With the development of society and the advancement of science and technology, pipe fittings are developing towards high strength and high toughness. The quality requirements for pipe fittings are constantly improving, and pipe making technology and equipment are also constantly developing. Metal pipes are cut into various tubular parts, and the ends of these tubular parts often need to be connected with other parts. In order to be able to connect with different parts, the pipes need to be processed secondary, that is, the ends of the pipe fittings are processed and treated with corresponding molds to form expansion, shrinkage or various shapes to meet people's requirements for the shape of the pipe ends.

[0003] When processing pipe fittings in different processes, different molds need to be replaced for processing, but each time the tool is replaced, the machine needs to be stopped. Even when the same pipe fitting needs to be processed in multiple processes, multiple machines are needed to complete the processing. Although the current existing technology uses a reversing mechanism to replace different tools, there are fewer reversing stations, the processing efficiency is low, and the production time is long. Summary of the invention

[0004] In order to overcome the deficiencies in the prior art, the present invention provides a multi-station reversing mechanism for a tube end forming machine, which has high processing efficiency and can perform multi-station reversing to achieve tool replacement.

[0005] The technical solution adopted by the present invention to solve its technical problem is: a multi-station reversing mechanism of a tube end forming machine, including a punch shaft, a rotary punch shaft, a fixed frame, a steering wheel rotatably connected in the fixed frame, a straight punch mechanism located behind the steering wheel, and a driving mechanism located below the steering wheel, the punch shaft and the rotary punch shaft both pass through the steering wheel, one end of the punch shaft is connected to the straight punch mechanism, a rotary punch mechanism is fixed above the straight punch mechanism, the rotary punch mechanism is connected to one end of the rotary punch shaft, and the driving mechanism drives the rotation of the steering wheel.

[0006] As a preferred solution, the steering wheel is provided with eight through holes distributed in a circular shape, the rotary punch shaft passes through the steering wheel from one of the through holes, and the remaining seven through holes are provided with punch shafts.

[0007] As a preferred solution, the drive mechanism includes a drive motor, a first synchronous wheel and a second synchronous wheel. The drive motor is located below the steering wheel. The output end of the drive motor is connected to the first synchronous wheel. The second synchronous wheel is fixed on the steering wheel body. The first synchronous wheel and the second synchronous wheel are connected by a synchronous belt.

[0008] By adopting the above scheme, when the tool needs to be replaced, the driving motor drives the first synchronous wheel to rotate, and the first synchronous wheel drives the second synchronous wheel to rotate through the synchronous belt. Since the second synchronous belt is fixed on the steering wheel body, the steering wheel is driven to rotate, thereby realizing the replacement of the tool. The structure is simple, the degree of automation is high, and the replacement is more convenient.

[0009] As a preferred solution, the straight punch mechanism includes a support frame, a cylinder, a push plate and a sliding rod. The cylinder is fixed on the support frame, the piston rod of the cylinder is connected to one end of the push plate, and the other end of the push plate facing the steering wheel is engaged with the end of the punch shaft. The sliding rod is arranged between the fixed frame and the support frame, and one end of the sliding rod is connected to the side of the lower end of the support frame. A sliding block is slidably connected to the sliding rod, and the sliding block is connected to the lower part of the other end of the push plate facing the steering wheel. A rotary punch mechanism is fixed above the support frame.

[0010] By adopting the above scheme, the steering wheel is driven to rotate by the driving mechanism, so that the punch shaft fixed on the steering wheel rotates to engage with the push plate. When the end of the rotating punch shaft is engaged with the push plate, the piston rod of the oil cylinder drives the push plate to move forward, thereby pushing the punch shaft engaged with the push plate to move forward to process the pipe in front. When the tool needs to be replaced for the next process, the driving mechanism drives the steering wheel to rotate, so that the punch shaft engaged with the push plate is disengaged, allowing the next punch shaft to engage with the push plate, thereby completing the replacement of the tool, avoiding the problem of stopping the machine for replacement, and improving the processing efficiency.

[0011] As a preferred solution, the other end of the push plate facing the steering wheel is provided with a first snap-in socket that cooperates with the punch shaft, the upper inner wall and the lower inner wall of the front end of the first snap-in are symmetrically provided with a first protrusion and a second protrusion, a second snap-in socket is formed between the first protrusion and the second protrusion, and the end of the punch shaft facing the support frame is provided with a recessed portion that cooperates with the second snap-in socket.

[0012] As a preferred solution, the surfaces of the first bump and the second bump are smooth arc-shaped surfaces.

[0013] As a preferred embodiment, the rotary punch mechanism includes a rotary punch motor and a spline shaft, the rotary punch motor is fixed above the support frame, the output end of the rotary punch motor is connected to the third synchronous wheel, the two ends of the spline shaft are respectively rotatably connected to the support frame and the steering wheel, and the shaft bodies at both ends of the spline shaft are respectively connected to the fourth synchronous wheel and the fifth synchronous wheel, the third synchronous wheel and the fourth synchronous wheel are connected by a synchronous belt, and the sixth synchronous wheel is provided at the end of the rotary punch shaft facing the support frame, and the sixth synchronous wheel and the fifth synchronous wheel are connected by a synchronous belt.

[0014] By adopting the above scheme, when the pipe fitting needs to be chamfered, expanded, shrunk, etc. according to the processing requirements, the rotary punch motor drives the third synchronous wheel to rotate, and the third synchronous wheel drives the spline shaft to rotate, and then drives the rotary punch shaft connected to the spline shaft to rotate, so that the tool fixed at the other end of the rotary punch shaft can perform chamfering, expanding, shrunk, etc. on the pipe fitting, avoiding the need to place the pipe fitting on other machines for chamfering, expanding, shrunk, etc. after forming, thereby shortening the processing time and improving processing efficiency.

[0015] As a preferred solution, one end of the rotary punch shaft facing the support frame is connected to a fixing piece, and the other end of the fixing piece is connected to the spline shaft.

[0016] The above solution is adopted to connect the rotary punch shaft and the spline shaft with a fixing member in order to ensure that the rotations therebetween can be synchronized and avoid unnecessary rotation deviation.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: a plurality of punch shafts with tools installed are arranged in the steering wheel, and the oil cylinder drives the push plate to move forward, so that the punch shaft connected to the push plate drives the tool to process the pipe fitting. When the tool on the first punch shaft has processed the pipe fitting, the driving motor drives the steering wheel to rotate, so that the next punch shaft in the steering wheel rotates and engages with the push plate, and then the oil cylinder pushes the punch shaft forward to allow the tool to process the pipe fitting, and the replacement of different tools is realized in turn, replacing the traditional method that requires shutdown for replacement, shortening the production time, and improving the processing efficiency; at the same time, when the pipe fitting is formed, according to the processing requirements, when the pipe fitting needs to be chamfered, expanded, shrunk, etc., the rotary punch motor drives the spline shaft to rotate, and then drives the rotary punch shaft connected to the spline shaft to rotate, so that the tool fixed at the other end of the rotary punch shaft performs chamfering, expanding, shrinking, etc. on the pipe fitting, avoiding the need to place the pipe fitting on other machines for chamfering, expanding, shrinking, etc. after forming, shortening the processing time, and improving the processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0019] Figure 1 It is a schematic diagram of the multi-station reversing mechanism of the tube end forming machine of the present invention.

[0020] Figure 2 It is a connection diagram of the transformation disc and the driving mechanism.

[0021] Figure 3 It is a schematic diagram of the straight punch mechanism and the rotary punch mechanism.

[0022] Figure 4 yes Figure 3 A magnified schematic diagram of center A.

[0023] Figure 5 It is a schematic diagram of the push plate.

[0024] Figure 6 yes Figure 3 A magnified schematic diagram of point B in the middle.

[0025] 1-fixed frame; 2-steering wheel; 3-punch shaft; 4-rotary punch shaft; 5-driving mechanism; 51-driving motor; 52-first synchronous wheel; 53-second synchronous wheel; 6-straight punch mechanism; 61-support frame; 62-oil cylinder; 63-slide rod; 64-sliding block; 65-push plate; 71-rotary punch motor; 72-third synchronous wheel; 73-fourth synchronous wheel; 74-spline shaft; 75-fifth synchronous wheel; 76-sixth synchronous wheel; 77-fixed piece; 7-rotary punch mechanism; 8-through hole; 9-first bayonet; 10-recessed portion; 11-first convex block; 12-second convex block; 13-second engaging opening. DETAILED DESCRIPTION

[0026] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0027] In the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention; the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance; in addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] Example 1

[0029] Please refer to Figure 1-6A multi-station reversing mechanism of a tube end forming machine includes a punch shaft 3, a rotary punch shaft 4, a fixed frame 1, a steering wheel 2 rotatably connected in the fixed frame 1, a straight punch mechanism 6 located behind the steering wheel 2, and a driving mechanism 5 located below the steering wheel 2. The punch shaft 3 and the rotary punch shaft 4 both pass through the steering wheel 2, one end of the punch shaft 3 is connected to the straight punch mechanism 6, a rotary punch mechanism 7 is fixed above the straight punch mechanism 6, the rotary punch mechanism 7 is connected to one end of the rotary punch shaft 4, and the driving mechanism 5 drives the steering wheel 2 to rotate; wherein, eight through holes 8 are distributed in a circular shape on the steering wheel 2, the rotary punch shaft 4 passes through the steering wheel 2 from one of the through holes 8, and the remaining seven through holes 8 are all provided with punch shafts 3, so that the punch shaft 3 and the rotary punch shaft 4 are distributed in a circular shape.

[0030] The above-mentioned driving mechanism 5 includes a driving motor 51, a first synchronous wheel 52 and a second synchronous wheel 53. The driving motor 51 is located below the steering wheel 2. The output end of the driving motor 51 is connected to the first synchronous wheel 52. The second synchronous wheel 53 is fixed on the body of the steering wheel 2. The first synchronous wheel 52 and the second synchronous wheel 53 are connected by a synchronous belt.

[0031] The above-mentioned straight punch mechanism 6 includes a support frame 61, a cylinder 62, a push plate 65 and a slide rod 63. The cylinder 62 is fixed on the support frame 61, and the piston rod of the cylinder 62 is connected to one end of the push plate 65. The push plate 65 is engaged with the end of the punch shaft 3 toward the other end of the steering wheel 2. The slide rod 63 is arranged between the fixed frame 1 and the support frame 61, and one end of the slide rod 63 is connected to the side of the lower end of the support frame 61. A slider 64 is slidably connected to the slide rod 63, and the slider 64 is connected to the lower part of the other end of the push plate 65 toward the steering wheel 2. A rotary punch mechanism 7 is fixed above the support frame 61.

[0032] The snap-fit ​​connection structure between the push plate 65 and the punch shaft 3 is as follows: the other end of the push plate 65 facing the steering wheel 2 is provided with a first snap-fit ​​9 that cooperates with the punch shaft 3, the upper inner wall and the lower inner wall of the front end of the first snap-fit ​​9 are symmetrically provided with a first protrusion 11 and a second protrusion 12, a second snap-fit ​​opening 13 is formed between the first protrusion 11 and the second protrusion 12, and the end of the punch shaft 3 facing the support frame 61 is provided with a recessed portion 10 that cooperates with the second snap-fit ​​opening 13; wherein, the surfaces of the first protrusion 11 and the second protrusion 12 are smooth arc-shaped surfaces.

[0033] The above-mentioned rotary punching mechanism 7 includes a rotary punching motor 71 and a spline shaft 74. The rotary punching motor 71 is fixed above the support frame 61. The output end of the rotary punching motor 71 is connected to the third synchronous wheel 72. The two ends of the spline shaft 74 are rotatably connected to the support frame 61 and the steering wheel 2, and the shaft bodies at both ends of the spline shaft 74 are respectively connected to the fourth synchronous wheel 73 and the fifth synchronous wheel 75. The third synchronous wheel 72 and the fourth synchronous wheel 73 are connected by a synchronous belt. The end of the rotary punching shaft 4 facing the support frame is provided with a sixth synchronous wheel 76, and the sixth synchronous wheel 76 and the fifth synchronous wheel 75 are connected by a synchronous belt.

[0034] Furthermore, one end of the rotary punch shaft 4 facing the support frame 61 is connected to a fixing member 77 , and the other end of the fixing member 77 is connected to the spline shaft 74 .

[0035] Working principle: the punch shaft 3 and the rotary punch shaft 4 are installed in the steering wheel 2 through the through hole 8, and then the tools required for processing are installed on the punch shaft 3 and the rotary punch shaft 4. After the tools are installed, the pipe to be processed is extended in front of the punch shaft 3 and the rotary punch shaft 4, and then the driving motor 51 drives the steering wheel 2 to rotate, so that the steering wheel 2 drives the punch shaft 3 with the required tools installed to rotate and engage in the bayonet of the push plate 65, and then the cylinder 62 is started to drive the push plate 65 to move forward, so that the tool on the punch shaft 3 is pushed forward by the push plate 65 to the pipe to be processed for processing. When the tool needs to be replaced for the next process, the driving motor drives the steering wheel to rotate, so that the punch shaft 3 engaged with the push plate 65 is disengaged, allowing the next punch shaft 3 to engage with the push plate 65. The plate 65 is engaged to complete the replacement of the tool, and then the cylinder 62 continues to drive the punch shaft 3 forward to process the pipe fitting. It has a simple structure and a high degree of automation, which reduces the labor intensity of workers, avoids the need to stop the machine for replacement, and improves processing efficiency. At the same time, when the pipe fitting is formed, if the pipe fitting needs to be chamfered, expanded, shrunk, etc. according to the processing requirements, the rotary punch motor 71 drives the spline shaft 74 to rotate, and then drives the rotary punch shaft 4 connected to the spline shaft 74 to rotate, so that the tool fixed at the other end of the rotary punch shaft 4 can perform chamfering, expanding, shrinking, etc. on the pipe fitting, avoiding the need to place the pipe fitting on other machines for chamfering, expanding, shrinking, etc. after forming, thereby shortening the processing time and improving processing efficiency.

[0036] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the attached claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0037] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description 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 may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A multi-station reversing mechanism for a tube end forming machine, characterized in that: It includes a punch shaft, a rotary punch shaft, a fixing frame, a steering wheel rotatably connected in the fixing frame, a straight punch mechanism located behind the steering wheel, and a driving mechanism located below the steering wheel. The punch shaft and the rotary punch shaft both pass through the steering wheel. One end of the punch shaft is connected to the straight punch mechanism. A rotary punch mechanism is fixed above the straight punch mechanism. The rotary punch mechanism is connected to one end of the rotary punch shaft. The driving mechanism drives the steering wheel to rotate. The steering wheel is provided with eight through holes distributed in a circular shape, the rotary punch shaft passes through the steering wheel from one of the through holes, and the remaining seven through holes are provided with punch shafts; The driving mechanism comprises a driving motor, a first synchronous wheel and a second synchronous wheel, wherein the driving motor is located below the steering wheel, the output end of the driving motor is connected to the first synchronous wheel, the second synchronous wheel is fixed to the body of the steering wheel, and the first synchronous wheel and the second synchronous wheel are connected by a synchronous belt; The straight punch mechanism includes a support frame, an oil cylinder, a push plate and a sliding rod, the oil cylinder is fixed on the support frame, the piston rod of the oil cylinder is connected to one end of the push plate, the other end of the push plate facing the steering wheel is engaged with the end of the punch shaft, the sliding rod is arranged between the fixed frame and the support frame, and one end of the sliding rod is connected to the side of the lower end of the support frame, a sliding block is slidably connected to the sliding block, the sliding block is connected to the lower part of the other end of the push plate facing the steering wheel, and a rotary punch mechanism is fixed above the support frame; The other end of the push plate facing the steering wheel is provided with a first bayonet for matching with the punch shaft, the upper inner wall and the lower inner wall of the front end of the first bayonet are symmetrically provided with a first protrusion and a second protrusion, a second engaging opening is formed between the first protrusion and the second protrusion, and the end of the punch shaft facing the support frame is provided with a recessed portion matching with the second engaging opening; The rotary punch mechanism includes a rotary punch motor and a spline shaft, the rotary punch motor is fixed above the support frame, the output end of the rotary punch motor is connected to the third synchronous wheel, the two ends of the spline shaft are rotatably connected to the support frame and the steering wheel, and the shaft bodies at both ends of the spline shaft are respectively connected to the fourth synchronous wheel and the fifth synchronous wheel, the third synchronous wheel and the fourth synchronous wheel are connected by a synchronous belt, and the end of the rotary punch shaft facing the support frame is provided with a sixth synchronous wheel, and the sixth synchronous wheel is connected to the fifth synchronous wheel by a synchronous belt; One end of the rotary punch shaft facing the support frame is connected with a fixing piece, and the other end of the fixing piece is connected with the spline shaft.

2. The multi-station reversing mechanism of the tube end forming machine according to claim 1, characterized in that: The surfaces of the first bump and the second bump are smooth arc-shaped surfaces.

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