A double-reducing tube punching device

Abstract

The application discloses a double-bending pipe punching equipment, which comprises a rack and a feeding device, further comprises two pipe bending and shrinking devices, which are arranged at two ends of the rack respectively, one of the pipe bending and shrinking devices is in sliding connection with the rack, a material carrying device is arranged above the pipe bending and shrinking device, the pipe bending and shrinking device comprises a pipe bending mechanism and a pipe shrinking and punching mechanism, the products to be processed in the feeding device are sequentially transferred to the pipe bending mechanism and the pipe shrinking and punching mechanism by the material carrying device, and the end portions of the products to be processed are subjected to bending, pipe shrinking and punching operations respectively. The application has the advantages of high automation degree, high processing efficiency and the like, the bending assembly on the pipe bending arm can bend the pipe along the outer edge surface of the wheel mold, so that the pipe bending cannot be locally deformed, such as concave, the processing quality is obviously improved, and the bending length and the bending angle of the pipe can be adjusted.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pipe processing, in particular to a double-bending and double-shrinking pipe punching equipment. BACKGROUND

[0002] Pipe is a kind of commonly used component and is widely used in many fields. Figure 15 As shown in the drawings, a pipe needs to be first bent at both ends by a certain angle, then the outer diameter of both ends of the pipe is shrunk to the designed size, and then a drainage hole is drilled at the specified position of the bent part of the pipe.

[0003] The above three processes are completed by a pipe bender, a pipe shrinking machine and a drilling machine respectively in the prior art. Each process needs to be manually transferred to the next process for further processing. During the transfer, multiple workers need to use a cart to transport the workpiece to the specified process for operation. Since the distance between each process is relatively far in actual operation, the pipe will waste a lot of unnecessary time during the transfer process, and the process is relatively complicated, which has low automation degree and low processing efficiency. SUMMARY

[0004] The present application aims to solve the above problems and provides a double-bending and double-shrinking pipe punching equipment, which solves the problems of low automation degree and low processing efficiency in the production and processing of pipes.

[0005] To achieve the above-mentioned purpose, the technical scheme of the present application is a double-bending and double-shrinking pipe punching equipment, which comprises a rack and a feeding device, and further comprises:

[0006] Two pipe bending and shrinking devices are arranged at both ends of the rack, and one of the pipe bending and shrinking devices is slidingly connected to the rack.

[0007] A material handling device is arranged above the pipe bending and shrinking device.

[0008] The pipe bending and shrinking device comprises a pipe bending mechanism and a pipe shrinking and punching mechanism. The product to be processed in the feeding device is sequentially transferred to the pipe bending mechanism and the pipe shrinking and punching mechanism by the material handling device, and the end part of the product to be processed is bent, shrunk and punched.

[0009] The bending mechanism comprises a first double-rod oil cylinder, a second double-rod oil cylinder, a vertical main shaft, a rotating shaft connected with the main shaft, a sub gear arranged at the lower end of the rotating shaft, a main gear arranged at the lower end of the main shaft, a wheel mold rotating with the rotating shaft, a bending arm rotating with the main shaft, and a bending assembly horizontally slidingly connected with the bending arm, wherein the output end of the first double-rod oil cylinder is connected with a first transmission gear rack, the first transmission gear rack is engaged with the main gear, the output end of the second double-rod oil cylinder is connected with a second transmission gear, the second transmission gear rack is engaged with the sub gear, and the first double-rod oil cylinder can push the bending assembly to rotate with the bending arm, so that the end of the product to be processed is bent along the outer edge surface of the wheel mold.

[0010] Preferably, a plurality of slide rails are arranged on the rack, and a slide plate is arranged on the plurality of slide rails, wherein one of the bending pipe reducing devices is fixedly installed on the slide plate.

[0011] Preferably, the wheel mold is circular or semicircular, and a limiting groove matched with the product to be processed is arranged on the outer edge surface of the wheel mold in the circumferential direction.

[0012] Preferably, the bending mechanism further comprises a box body, the upper end of the main shaft extends to the outside of the box body and is rotationally connected with the box body through a flange, the first double-rod oil cylinder and the second double-rod oil cylinder are arranged on one side of the box body, a first compression wheel seat and a second compression wheel seat are further arranged on one side of the box body, the first transmission gear rack is compressed and engaged with the main gear through the first compression wheel seat, and the second transmission gear rack is compressed and engaged with the sub gear through the second compression wheel seat.

[0013] Preferably, a clamping assembly is further arranged on one side of the box body, the clamping assembly comprises an adapter seat, a clamping die seat arranged at the top end of the adapter seat, an upper clamping die and a lower clamping die respectively arranged on the inner sides of the two sides of the clamping die seat, and a first clamping oil cylinder arranged at one end of the clamping die seat, wherein the upper clamping die is slidingly connected with the clamping die seat, the output end of the first clamping oil cylinder is connected with the upper clamping die through the clamping die seat, and limiting grooves matched with the product to be processed are arranged on the inner sides of the upper clamping die and the lower clamping die.

[0014] Preferably, the bending assembly comprises a sliding seat horizontally slidingly connected with the inner side of the bending arm, a guide die seat horizontally slidingly connected with the sliding seat, a guide die block horizontally slidingly connected with one side of the guide die seat, a compression strip fixing the guide die block on the guide die seat, and a limiting die slidingly connected with the guide die block, wherein recesses are arranged on the upper and lower sides of the guide die block, the compression strip is clamped with the recesses on the upper and lower sides of the guide die block and is fixedly connected with the guide die seat through bolts, the guide die seat is fixedly connected with the sliding seat through bolts, and limiting grooves matched with the product to be processed are arranged on the limiting die.

[0015] Preferably, the guide die seat is provided with at least one pin shaft, the pin shaft is provided with a rolling sleeve, the rolling sleeve is in contact with the back of the guide die module, the top surface of the guide die seat is provided with a pressing strip, the pressing strip is in abutment with the pin shaft, and the pressing strip is fixedly connected with the guide die seat through bolts.

[0016] The bottom of the sliding seat is hingedly connected with a two-hole plate, the two-hole plate is hingedly connected with a three-hole plate, the bottom of the elbow pipe arm is hingedly connected with a second clamping oil cylinder, the output end of the second clamping oil cylinder is hingedly connected with the three-hole plate, and the three-hole plate is rotationally connected with the elbow pipe arm.

[0017] Preferably, the pipe shrinking and punching mechanism comprises a base, a positioning assembly, a pipe shrinking assembly and a punching assembly arranged on the base, the pipe shrinking assembly is arranged on one side of the positioning assembly, and the punching assembly is arranged at an angle of 45° with the pipe shrinking assembly.

[0018] Preferably, the positioning assembly comprises a clamping oil cylinder seat, a pressing oil cylinder vertically arranged on the clamping oil cylinder seat, and an upper clamping block and a lower clamping block arranged on the inner side of the clamping oil cylinder seat, the output end of the pressing oil cylinder is connected with the upper clamping block, and the lower surface of the upper clamping block and the upper surface of the lower clamping block are both provided with a limiting groove matched with the bent part of the product to be processed.

[0019] The pipe shrinking assembly comprises a pipe shrinking oil cylinder seat, a pipe shrinking oil cylinder horizontally arranged on the pipe shrinking oil cylinder seat, a pipe shrinking sliding seat in sliding connection with the base, and a pipe shrinking die seat arranged on the pipe shrinking sliding seat, the pipe shrinking oil cylinder drives the pipe shrinking die seat to move horizontally along with the pipe shrinking die seat, and the pipe shrinking oil cylinder can perform pipe shrinking operation on the end part of the product to be processed.

[0020] The punching assembly comprises a punching oil cylinder seat, a punching oil cylinder horizontally arranged on the punching oil cylinder seat, a punching punch die seat in horizontal sliding connection with the punching oil cylinder seat, a fixing block arranged on the punching punch die seat, and a punching needle horizontally arranged on one side of the fixing block, the output end of the punching oil cylinder is connected with the punching punch die seat, the lower surface of the upper clamping block and the upper surface of the lower clamping block are provided with a punching groove through which the punching needle passes, and the punching needle can pass through the punching groove to perform punching operation on the bent part of the product to be processed.

[0021] Preferably, the material handling device comprises a support frame, a cylinder support frame in horizontal sliding connection with the support frame, a lead screw transmission assembly in transmission connection with the cylinder support frame, and three clamping assemblies arranged at equal intervals on the cylinder support frame, a discharging supporting plate is arranged above the pipe shrinking assembly, the interval between the three clamping assemblies is consistent with the interval between the feeding device and the pipe bending mechanism, the interval between the pipe bending mechanism and the positioning assembly, and the interval between the positioning assembly and the discharging supporting plate.

[0022] Compared with the prior art, the beneficial effects are as follows:

[0023] The application has the advantages of high automation degree and high processing efficiency, and the pipe fittings are sequentially transferred from the feeding device to the pipe bending mechanism and the pipe shrinking and punching mechanism by the material carrying device to complete the pipe bending and pipe shrinking and punching operations, the pipe fitting is clamped and fixed by the clamping assembly during pipe bending, the main shaft is driven to rotate by the first double-rod oil cylinder, thereby driving the pipe bending arm to rotate, the bending assembly on the pipe bending arm bends the pipe fitting along the outer edge surface of the wheel mold, ensures that the pipe bending does not occur local deformation such as concave, the processing quality is obviously improved, the pipe fitting can be processed and formed at one time by the equipment, manual carrying of the pipe fitting is not needed, the processing efficiency is greatly improved, the bending length and bending angle of the pipe fitting can be adjusted, and the application range is wide. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is the overall structure schematic diagram of the application;

[0025] Figure 2 is the structure schematic diagram of another view of Figure 1 ;

[0026] Figure 3 is the structure schematic diagram of another view of ;

[0027] Figure 4 is the overall structure schematic diagram of the pipe bending mechanism in the application;

[0028] Figure 5 is the structure schematic diagram of the pipe bending mechanism in the application without the box body and the clamping assembly;

[0029] Figure 6 is the structure schematic diagram of the pipe bending arm in the application;

[0030] Figure 7 is the structure schematic diagram of another view of Figure 6 ;

[0031] Figure 8 is the structure schematic diagram of the clamping assembly in the application;

[0032] Figure 9 is the structure schematic diagram of the slide in the application;

[0033] Figure 10 is the internal structure schematic diagram of the slide in the application;

[0034] Figure 11 is the structure schematic diagram of the pipe shrinking and punching mechanism in the application;

[0035] Figure 12 is the structure schematic diagram of the positioning assembly in the application;

[0036] Figure 13 is the structural schematic diagram of the punching assembly in the application;

[0037] Figure 14 is the structural schematic diagram of the pipe shrinking assembly in the application;

[0038] Figure 15 is the structural schematic diagram of the pipe after processing.

[0039] In the figure, 1 is a rack, 2 is a feeding device, 3 is a hand wheel, 4 is a sliding plate, 5 is a pipe bending and shrinking device, 51 is a pipe bending mechanism, 511 is a box body, 512 is a first double-rod oil cylinder, 513 is a second double-rod oil cylinder, 514 is a rotating shaft, 515 is a wheel mold, 516 is a pipe bending arm, 517 is a first pressing wheel seat, 518 is a second pressing wheel seat, 519 is a sliding seat, 520 is a second clamping oil cylinder, 521 is a clamping assembly, 5211 is an adapter seat, 5212 is a clamping mold seat, 5213 is a first clamping oil cylinder, 5214 is an upper clamping mold, 5215 is a lower clamping mold, 522 is a guide mold block, 523 is a main gear, 524 is a secondary gear, 525 is a second transmission rack, 526 is a first transmission rack, 527 is a guide mold seat, 528 is a limiting mold, 529 is a main shaft, 530 is a two-hole plate, 531 is a three-hole plate, 532 is a pin shaft, 533 is a pressing strip, 534 is a rolling sleeve, 52 is a pipe shrinking and punching mechanism, 5201 is a base, 5202 is a positioning assembly, 52021 is a clamping oil cylinder seat, 52022 is a pressing oil cylinder, 52023 is an upper clamping block, 52024 is a lower clamping block, 5203 is a punching assembly, 52031 is a punching oil cylinder seat, 52032 is a punching oil cylinder, 52033 is a punching punch seat, 52034 is a fixing block, 52035 is a punching needle, 5204 is a pipe shrinking assembly, 52041 is a pipe shrinking oil cylinder seat, 52042 is a pipe shrinking oil cylinder, 52043 is a pipe shrinking sliding seat, 52044 is a pipe shrinking mold seat, 6 is a material carrying device, 61 is a support frame, 62 is a screw transmission assembly, 63 is a cylinder support, 64 is a clamping assembly, and 7 is a feeding support plate. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the application will be clearly and completely described in combination with the drawings in the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the application.

[0041] As Figure 1As shown, a double-bending and shrinking pipe punching device mainly includes a frame 1, a feeding device 2, two bending and shrinking pipe devices 5 installed on the frame 1, and a material handling device 6. The two bending and shrinking pipe devices 5 are located at both ends of the frame 1, and are used to bend and shrink the pipes at both ends. The feeding device 2 is located on one side of the frame 1 and is used to feed the pipes. The bending and shrinking pipe device 5 is composed of a bending mechanism 51 and a shrinking and punching mechanism 52. The material handling device 6 spans above the bending and shrinking pipe device 5. During processing, the pipes in the feeding device 2 are sequentially transported to the bending mechanism 51 and the shrinking and punching mechanism 52 through the material handling device 6, and the bending and shrinking and punching operations are performed on both ends of the pipes respectively.

[0042] like Figure 2 As shown, in order to process pipes of different lengths, multiple slide rails are provided on one side of the upper part of the frame 1. A slide plate 4 is slidably connected to the slide rails. One of the two pipe bending and shrinking devices 5 is fixedly installed on one side of the upper part of the frame 1, and the other is installed on the slide plate 4. A lead screw is provided at the bottom of the slide plate 4, and a handwheel 3 is provided at the front end of the lead screw. The lead screw is connected to the bottom of the slide plate 4. By turning the handwheel 3, the lead screw is rotated, thereby driving the slide plate 4 to slide along the slide rails. The distance between the two pipe bending and shrinking devices 5 can be adjusted to process pipes of different lengths, and the bending length of the pipes can also be adjusted.

[0043] refer to Figure 3 The aforementioned material handling device 6 is mainly composed of a support frame 61, a cylinder bracket 63, a screw drive assembly 62, and three clamping assemblies 64. The support frame 61 spans across the tube bending and shrinking device 5, while the cylinder bracket 63 is horizontally slidably connected to the guide rod on the support frame 61. The screw drive assembly 62 is mounted on the support frame 61 and is connected to the cylinder bracket 63 via a screw. The screw is driven to rotate by a motor. The three clamping assemblies 64 are vertically arranged at both ends and the middle of the cylinder bracket 63, respectively. A feeding tray 7 is provided on the tube shrinking and drilling mechanism 52. The spacing between the three clamping assemblies 64 is consistent with the spacing between the feeding device 2 and the tube bending mechanism 51, the spacing between the tube bending mechanism 51 and the tube shrinking and drilling mechanism 52, and the spacing between the tube shrinking and drilling mechanism 52 and the feeding tray 7. This allows for continuous processing of pipe fittings. The processed pipe fittings are transferred to the feeding tray 7, and then manually removed from the feeding tray 7.

[0044] During processing, the clamping component 64 first clamps the pipe on the feeding device 2 and moves it to the pipe bending mechanism 51 by being driven by the screw drive component 62. The clamping component 64 clamps the pipe by controlling the opening and closing of the two clamping plates with a cylinder.

[0045] like Figure 4-7As shown, the pipe bending mechanism 51 is mainly composed of a box body 511, a first double-rod oil cylinder 512, a second double-rod oil cylinder 513, a main shaft 529, a rotating shaft 514, a main gear 523, a secondary gear 524, a wheel mold 515, a pipe bending arm 516, a first transmission rack 526, a second transmission rack 525, a clamping assembly 521, a bending assembly, etc. The main shaft 529 is a hollow shaft, which is sleeved on the rotating shaft 514, the upper and lower ends of the rotating shaft 514 pass through the main shaft 529, and the rotating shaft 514 and the main shaft 529 are vertically arranged on the box body 511 and rotationally connected between each other, and can independently rotate. The upper end of the main shaft 529 extends to the outside of the box body 511 through the box body 511 and is rotationally connected with the box body 511 through a bearing, the pipe bending arm 516 is arranged at the upper end of the main shaft 529 and is rotated by the main shaft 529, the main gear 523 is arranged at the lower end of the main shaft 529, the first double-rod oil cylinder 512 and the second double-rod oil cylinder 513 are horizontally arranged on one side of the box body 511, the first transmission rack 526 is connected with the output end of the first double-rod oil cylinder 512 and is engaged with the main gear 523, the first transmission rack 526 is driven to move by the first double-rod oil cylinder 512, the main gear 523 is driven to rotate, the main shaft 529 is driven to rotate, and the pipe bending arm 516 is driven to rotate.

[0046] The secondary gear 524 is arranged at the lower end of the rotating shaft 514, and the wheel mold 515 is arranged at the upper end of the rotating shaft 514 and can rotate with the rotating shaft 514, the second transmission rack 525 is connected with the output end of the second double-rod oil cylinder 513 and is engaged with the secondary gear 524, the second transmission rack 525 is driven to move by the second double-rod oil cylinder 513, the secondary gear 524 is driven to rotate, the rotating shaft 514 is driven to rotate, and the wheel mold 515 is driven to rotate. The wheel mold 515 is circular or semicircular in structure, and a limiting groove is arranged along the circumferential direction of the outer edge surface of the wheel mold 515, and a pipe is bent along the limiting groove.

[0047] Reference Figure 4 , Figure 5 In order to ensure that the first transmission rack 526 and the second transmission rack 525 can be completely engaged with the main gear 523 and the secondary gear 524, a first pressure wheel seat 517 and a second pressure wheel seat 518 are horizontally arranged on one side of the box body 511, the end of the first pressure wheel seat 517 abuts against the first transmission rack 526, and the end of the second pressure wheel seat 518 abuts against the second transmission rack 525, so that the first transmission rack 526 is firmly abutted on the main gear 523, the second transmission rack 525 is firmly abutted on the secondary gear 524, the engagement between the two is more compact, and the transmission effect is improved.

[0048] As Figure 6 ,Figure 7 , Figure 9 and Figure 10 As shown, the bending assembly described above is installed on the bending arm 516. This bending assembly mainly consists of a slide block 519, a guide mold base 527, a guide module 522, a pressure strip 533, a limiting mold 528, a pin 532, a rolling sleeve 534, a two-hole plate 530, a three-hole plate 531, and a second clamping cylinder 520. A groove is provided in the middle of the bending arm 516, making the overall shape of the bending arm 516 U-shaped. The slide block 519 is horizontally slidably connected to the groove on the bending arm 516. The two-hole plate 530... The bottom of the slide 519 is hinged to the 30. The second clamping cylinder 520 is located at the bottom of the bending arm 516 and is hinged to the bending arm 516. The three-hole plate 531 is triangular in shape, with a through hole at each corner. Two corners are hinged to the output ends of the two-hole plate 530 and the second clamping cylinder 520, respectively. The last corner is rotatably connected to the bending arm 516. The three-hole plate 531 of the second clamping cylinder 520 rotates, thereby driving the slide 519 to slide horizontally along the bending arm 516 through the two-hole plate 530.

[0049] A convex groove is also provided on the slide 519. The bottom of the guide mold seat 527 is horizontally slidably connected to the groove on the slide 519. The position of the guide mold seat 527 can be adjusted through the groove. After the position of the guide mold seat 527 is adjusted, it is fixed to the slide 519 with bolts. The bolts pass through the guide mold seat 527 and abut against the slide 519, so that the guide mold seat 527 will not slide.

[0050] refer to Figure 9 , Figure 10 A groove is also provided on the side of the guide mold base 527 that is biased towards the wheel mold 515. The guide module 522 is horizontally slidably connected to the groove on the guide mold base 527. The front and rear positions of the guide module 522 can be adjusted through the groove. After adjustment, it is pressed and fixed by the pressure strip 533. The pressure strip 533 is set on the upper and lower sides of the guide module 522 and is engaged with the grooves on the upper and lower sides of the guide module 522. The pressure strip 533 is fixedly connected to the guide mold base 527 by bolts. Two pins 532 are provided, both of which are vertically inserted into the guide mold base 527. Two roller sleeves 534 are also provided, which are respectively sleeved on the two pins 532. The roller sleeves 534 will rotate with the pins 532. The outer edge of the roller sleeve 534 abuts against the back of the guide module 522. When the guide module 522 slides horizontally, the roller sleeve 534 will also rotate. This can reduce the friction when the guide module 522 slides and facilitate its sliding. After the guide mold base 527 is positioned, the pin 532 is pressed and fixed by the pressure strip 533. The pressure strip 533 is set at the top of the guide mold base 527, and its side abuts against the top edge of the pin 532. The pressure strip 533 is fixedly connected to the guide mold base 527 by bolts, so that the pin 532 will not rotate.

[0051] The limiting die 528 is arranged on one side of the guide die block 522 deviated from the wheel die 515, and is in sliding connection with the guide die seat 527 up and down, so that the up and down position of the limiting die 528 can be adjusted. A limiting groove matched with the pipe is arranged on the side of the limiting die 528 deviated from the wheel die 515. During pipe bending operation, the second clamping oil cylinder 520 drives the sliding seat 519 to move horizontally, and the limiting die 528 is matched with the wheel die 515 to clamp the end of the pipe. Then, the pipe is bent along with the rotation of the pipe bending arm 516. Since the bent part of the end of the pipe is completely wrapped in the limiting die 528, the limiting die 528 pushes the end of the pipe to bend along the limiting groove on the outer edge surface of the wheel die 515. Therefore, the pipe will not be locally deformed during bending, and the stability during bending is higher.

[0052] As shown in Figure 4 and Figure 8 Before the pipe is subjected to pipe bending operation, the two ends of the pipe need to be positioned and clamped. At this time, the cooperation of the clamping assembly 521 is needed. The clamping assembly 521 is arranged on the side of the box body 511 away from the first pressure roller seat 517 and the second pressure roller seat 518. It mainly includes an adapter seat 5211, a clamping die seat 5212, an upper clamping die 5214, a lower clamping die 5215, a first clamping oil cylinder 5213 and other components. The clamping die seat 5212 is arranged at the top end of the adapter seat 5211. The first clamping oil cylinder 5213 is horizontally arranged at one end of the adapter seat 5211. The clamping die seat 5212 has a U-shaped structure. The upper clamping die 5214 and the lower clamping die 5215 are respectively arranged on the opposite sides of the inner side of the clamping die seat 5212. The upper clamping die 5214 is in horizontal sliding connection with the clamping die seat 5212, and is connected with the output end of the first clamping oil cylinder 5213. Limiting grooves matched with the product to be processed are arranged in the inner sides of the upper clamping die 5214 and the lower clamping die 5215. The first clamping oil cylinder 5213 pushes the upper clamping die 5214 to move, so that the pipe is clamped and fixed in the limiting grooves between the upper clamping die 5214 and the lower clamping die 5215.

[0053] Before the pipe is subjected to pipe bending operation, the pipe is tangent to the wheel die 515. In the embodiment, the wheel die 515 is preferably semicircular. Then, the second double-rod oil cylinder 513 drives the rotating shaft 514 to rotate, adjusts the position of the wheel die 515, and then the clamping assembly 521 positions and clamps the pipe. Then, the bending assembly cooperates with the wheel die 515 to clamp the pipe. Then, the first double-rod oil cylinder 512 drives the main shaft 529 to rotate. The limiting die 528 bends the pipe along the groove on the outer edge surface of the wheel die 515 during rotation. The bending angle can be controlled, and the bending point can be adjusted, so that the pipe will not be locally deformed during bending.

[0054] The pipe subjected to pipe bending operation is moved to the pipe shrinking and punching mechanism 52 by the material handling device 6 for pipe shrinking and punching operation.

[0055] As Figure 11 shown, the pipe shrinking and punching mechanism 52 mainly consists of a base 5201, a positioning assembly 5202, a pipe shrinking assembly 5204 and a punching assembly 5203 mounted on the base 5201, wherein the pipe shrinking assembly 5204 is located on one side of the positioning assembly 5202 for pipe end shrinking operation, and the punching assembly 5203 is arranged on the opposite side of the positioning assembly 5202 at an angle of 45° with the pipe shrinking assembly 5204 for pipe bending part punching operation.

[0056] Referring to Figure 12 , the pipe bending part needs to be positioned by the positioning assembly 5202 before pipe shrinking, which mainly consists of a clamping cylinder seat 52021, a pressing cylinder 52022, an upper clamping block 52023, a lower clamping block 52024 and the like, wherein the pressing cylinder 52022 is vertically arranged at the top end of the clamping cylinder seat 52021, and its output end is connected with the upper clamping block 52023 through the clamping cylinder seat 52021, two guide rods are vertically arranged on the lower clamping block 52024, the upper clamping block 52023 is connected with the guide rods in sliding mode, and a limiting groove matched with the pipe bending part is arranged on the lower surface of the upper clamping block 52023 and the upper surface of the lower clamping block 52024, the shape of the limiting groove is consistent with that of the pipe bending part, the pipe bending end is placed in the limiting groove of the lower clamping plate during clamping, and then the pressing cylinder 52022 pushes the upper clamping plate to move downward along the guide rods to press and fix the pipe, so that the bending angle of the pipe will not change during the pipe hole locking operation.

[0057] Referring to Figure 13The punching assembly 5203 is mainly composed of a punching oil cylinder base 52031, a punching oil cylinder 52032, a punching punch base 52033, a fixing block 52034, a punching needle 52035 and the like. The punching oil cylinder 52032 is horizontally arranged at the end of the punching oil cylinder base 52031, and the output end thereof is connected with the punching punch base 52033 through the punching oil cylinder base 52031. The punching punch base 52033 is slidably connected with the guide rail on the punching oil cylinder base 52031. The fixing block 52034 is installed at one end of the punching punch base 52033 close to the positioning assembly 5202. The punching needle 52035 is horizontally installed on the fixing block 52034, and the punching needle 52035 is opposite to the position of the bending point of the pipe, and the included angle between the punching needle 52035 and the length direction of the pipe is 45°. The punching punch base 52033 is horizontally moved by the punching oil cylinder 52032, so as to drive the punching needle 52035 to move. The punching groove is arranged on the lower surface of the upper clamping plate and the upper surface of the lower clamping plate. The punching needle 52035 passes through the punching groove between the upper clamping plate and the lower clamping plate, and the bending part of the pipe is punched, so that the accuracy of the punching position is effectively ensured, and the local deformation of the punched part is avoided.

[0058] As shown in Figure 14 The pipe reducing assembly 5204 is mainly composed of a pipe reducing oil cylinder base 52041, a pipe reducing oil cylinder 52042, a pipe reducing sliding base 52043, a pipe reducing die base 52044 and the like. The pipe reducing oil cylinder 52042 is horizontally arranged on the pipe reducing oil cylinder base 52041. The pipe reducing sliding base 52043 is slidably connected with the base 5201. The output end of the pipe reducing oil cylinder 52042 is connected with the pipe reducing sliding base 52043. The pipe reducing die base 52044 is arranged at one end of the pipe reducing sliding base 52043 close to the positioning assembly 5202. The pipe reducing die base 52044 is moved by the pipe reducing oil cylinder 52042, so as to drive the pipe reducing die base 52044 to move. The end of the pipe is punched by the pipe reducing die base 52044, so that the outer diameter of the end of the pipe is reduced, and the pipe is reduced.

[0059] After the pipe reducing and punching operations are completed, the pipe is moved to the discharging supporting plate 7 by the material carrying device 6, and then is discharged by manual operation.

[0060] The above technical scheme only reflects the preferred technical scheme of the present application. Some changes made by the person skilled in the art to some parts of the present application also reflect the principle of the present application, and are within the protection scope of the present application.

Claims

1. A double-bellows tube piercing apparatus comprising a frame (1) and a feeding device (2), characterized in that, Also include: Two elbow pipe shrinking device (5) are arranged in the two ends of the rack (1), one of which is slidingly connected with the rack (1); Material handling device (6) is arranged above the elbow pipe shrinking device (5); The elbow pipe shrinking device (5) includes elbow pipe mechanism (51) and pipe shrinking and punching mechanism (52), the product to be processed in the feeding device (2) is sequentially moved to the elbow pipe mechanism (51) and the pipe shrinking and punching mechanism (52) by the material handling device (6), and the end of the product to be processed is bent, shrunk and punched respectively; Wherein the elbow pipe mechanism (51) includes first double out bar oil cylinder (512), second double out bar oil cylinder (513), vertically arranged main shaft (529), rotating shaft (514) penetratingly connected with main shaft (529), auxiliary gear (524) arranged at the lower end of rotating shaft (514), main gear (523) arranged at the lower end of main shaft (529), wheel mold (515) rotating with rotating shaft (514), elbow pipe arm (516) rotating with main shaft (529), and bending assembly horizontally slidingly connected with elbow pipe arm (516), wherein the output end of the first double out bar oil cylinder (512) is connected with the first transmission rack (526), the first transmission rack (526) is engaged with the main gear (523), the output end of the second double out bar oil cylinder (513) is connected with the second transmission rack (525), the second transmission rack (525) is engaged with the auxiliary gear (524), and the first double out bar oil cylinder (512) can push the bending assembly to rotate with the elbow pipe arm (516), so that the end of the product to be processed is bent along the outer edge surface of the wheel mold (515); The bending assembly includes sliding seat (519) horizontally slidingly connected with the inner side of the elbow pipe arm (516), guide mold base (527) horizontally slidingly connected with the sliding seat (519), guide mold block (522) horizontally slidingly connected with one side of the guide mold base (527), pressing strip (533) fixing the guide mold block (522) on the guide mold base (527), and limiting mold (528) slidingly connected with the guide mold block (522), wherein the upper and lower sides of the guide mold block (522) are provided with grooves, the pressing strip (533) is clamped with the grooves on the upper and lower sides of the guide mold block (522), and is fixedly connected with the guide mold base (527) through bolts, the guide mold base (527) is fixed on the sliding seat (519) through bolts, and the limiting mold (528) is provided with limiting groove matched with the product to be processed; The guide mold base (527) penetrates at least one pin shaft (532), the pin shaft (532) is provided with a rolling sleeve (534), the rolling sleeve (534) is in contact with the back surface of the guide mold block (522), the top surface of the guide mold base (527) is provided with a pressing strip (533), the pressing strip (533) is in contact with the pin shaft (532), and is fixedly connected with the guide mold base (527) through bolts; The bottom of the sliding seat (519) is hingedly connected with a two-hole plate (530), the two-hole plate (530) is hingedly connected with a three-hole plate (531), the bottom of the elbow pipe arm (516) is hingedly connected with a second clamping oil cylinder (520), the output end of the second clamping oil cylinder (520) is hingedly connected with the three-hole plate (531), and the three-hole plate (531) is rotationally connected with the elbow pipe arm (516).

2. A double-reducing tube piercing apparatus according to claim 1, wherein The rack (1) is provided with a plurality of slide rails, the slide rails are provided with slide plates (4), and one of the elbow pipe reducing devices (5) is fixedly installed on the slide plate (4).

3. A double-reducing tube piercing apparatus according to claim 1, wherein The wheel mold (515) is circular or semicircular, and a limiting groove matched with the product to be processed is arranged on the circumferential direction of the outer edge surface of the wheel mold (515).

4. A double-reducing tube piercing apparatus according to claim 1, wherein The bending pipe mechanism (51) further comprises a box body (511), the upper end of the main shaft (529) extends to the outside of the box body (511) and is rotationally connected with the box body (511) through a flange, the first double-rod oil cylinder (512) and the second double-rod oil cylinder (513) are arranged on one side of the box body (511), the box body (511) is further provided with a first pressure wheel seat (517) and a second pressure wheel seat (518), the first transmission rack (526) is in meshing connection with the main gear (523) through the first pressure wheel seat (517), and the second transmission rack (525) is in meshing connection with the auxiliary gear (524) through the second pressure wheel seat (518).

5. A double-reducing tube piercing apparatus according to claim 4, wherein The box body (511) is further provided with a clamping assembly (521), the clamping assembly (521) comprises an adapter seat (5211), a clamping mold seat (5212) arranged at the top end of the adapter seat (5211), an upper clamping mold (5214) and a lower clamping mold (5215) arranged on the inner sides of the two sides of the clamping mold seat (5212) respectively, and a first clamping oil cylinder (5213) arranged at one end of the clamping mold seat (5212), wherein the upper clamping mold (5214) is in sliding connection with the clamping mold seat (5212), the output end of the first clamping oil cylinder (5213) penetrates through the clamping mold seat (5212) and is connected with the upper clamping mold (5214), and the inner sides of the upper clamping mold (5214) and the lower clamping mold (5215) are provided with limiting grooves matched with the product to be processed.

6. A double neckdown tube piercing apparatus as defined in claim 1 wherein, The pipe reducing and punching mechanism (52) comprises a base (5201) and a positioning assembly (5202), a pipe reducing assembly (5204) and a punching assembly (5203) arranged on the base (5201), wherein the pipe reducing assembly (5204) is arranged on one side of the positioning assembly (5202), and the punching assembly (5203) is arranged at an angle of 45° with the pipe reducing assembly (5204).

7. A double-reducing tube piercing apparatus according to claim 6, wherein The positioning assembly (5202) comprises a clamping oil cylinder seat (52021), a pressing oil cylinder (52022) vertically arranged on the clamping oil cylinder seat (52021), and an upper clamping block (52023) and a lower clamping block (52024) arranged inside the clamping oil cylinder seat (52021), wherein the output end of the pressing oil cylinder (52022) is connected with the upper clamping block (52023), and the lower surface of the upper clamping block (52023) and the upper surface of the lower clamping block (52024) are both provided with a limiting groove matched with the bent part of the product to be machined; The pipe shrinking assembly (5204) comprises a pipe shrinking oil cylinder seat (52041), a pipe shrinking oil cylinder (52042) horizontally arranged on the pipe shrinking oil cylinder seat (52041), a pipe shrinking sliding seat (52043) in sliding connection with the base (5201), and a pipe shrinking die seat (52044) arranged on the pipe shrinking sliding seat (52043), and the pipe shrinking oil cylinder (52042) drives the pipe shrinking die seat (52044) to move horizontally along with the pipe shrinking die seat (52044), so as to perform pipe shrinking work on the end part of the product to be machined; The punching assembly (5203) comprises a punching oil cylinder seat (52031), a punching oil cylinder (52032) horizontally arranged on the punching oil cylinder seat (52031), a punching punch die seat (52033) in horizontal sliding connection with the punching oil cylinder seat (52031), a fixed block (52034) arranged on the punching punch die seat (52033), and a punching needle (52035) horizontally arranged on one side of the fixed block (52034), the output end of the punching oil cylinder (52032) is connected with the punching punch die seat (52033), the lower surface of the upper clamping block (52023) and the upper surface of the lower clamping block (52024) are provided with a punching groove through which the punching needle (52035) passes, and the punching needle (52035) can pass through the punching groove to perform punching work on the bent part of the product to be machined.

8. A double-reducing tube piercing apparatus according to claim 6 wherein, The material carrying device (6) comprises a support frame (61), a cylinder support (63) in horizontal sliding connection with the support frame (61), a lead screw transmission assembly (62) in transmission connection with the cylinder support (63), and three clamping assemblies (64) equally spaced on the cylinder support (63), a discharging supporting plate (7) is arranged above the pipe shrinking assembly (5204), the spacing between the three clamping assemblies (64) is consistent with the spacing between the feeding device (2) and the pipe bending mechanism (51), the spacing between the pipe bending mechanism (51) and the positioning assembly (5202), and the spacing between the positioning assembly (5202) and the discharging supporting plate (7).

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