CN214488489U

CN214488489U - Pipe fitting lateral wall notching die

Info

Publication number: CN214488489U
Application number: CN202120267030.4U
Authority: CN
Inventors: 段华平; 钱飞; 曹光伟; 俞铖斌; 徐天鸿; 蔡磊磊
Original assignee: Ningbo Kdpr Tool Technology Co ltd
Current assignee: Ningbo Kdpr Tool Technology Co ltd
Priority date: 2021-01-27
Filing date: 2021-01-27
Publication date: 2021-10-26
Anticipated expiration: 2031-01-27

Abstract

The utility model provides a pipe fitting lateral wall die cut mould belongs to die-cut mould technical field, include: the lower die holder comprises a bottom plate, a pipe fitting positioning assembly and a punching block, the pipe fitting positioning assembly is fixedly connected with the bottom plate, the punching block is connected with the bottom plate and can move towards the pipe fitting positioning assembly, and the punching block is provided with a driving inclined surface; the upper die base, it can move towards the die holder, the upper die base include the lifter plate and with the wedge of drive inclined plane looks adaptation, the wedge with lifter plate fixed connection works as the lifter plate court when the bottom plate removed the wedge passes through the drive inclined plane promotes die-cut piece removes. The utility model has the advantages that: the die-cut workpiece punching machine is very convenient to use, high in machining efficiency and high in workpiece precision after punching.

Description

Pipe fitting lateral wall notching die

Technical Field

The utility model belongs to the technical field of die-cut mould, a pipe fitting lateral wall die-cut mould is related to.

Background

In the field of pipe fitting processing, the side walls of some pipe fittings need to be subjected to notching, so that strip-shaped slotted holes are formed in the side walls of the peripheral surfaces of the pipe fittings, and in order to achieve the purpose of processing the notching of the side walls of the pipe fittings, certain specific notching dies can be used for notching and punching the side walls of the pipe fittings.

For example, a utility model with application number of 201721782643.1 discloses a high-precision circular tube three-way notching press, which comprises a workbench, a stamping die and a clamp, the stamping die and the clamp are fixed on the workbench, the stamping die comprises a power device, a pressing plate and a die holder which are sequentially arranged from top to bottom, the pressing plate can be arranged between the power device and the die holder in a vertically sliding manner, a vertical first blade is arranged on the bottom surface of the pressing plate, the die holder comprises a top plate, a limiting post and a bottom plate which are arranged from top to bottom in sequence, the limiting post is horizontally arranged, the bottom plate is fixed on the workbench, a second blade and a third blade are respectively horizontally arranged at two sides of the limiting column, the second blade and the third blade are respectively arranged in a sliding way in the horizontal direction relative to the limiting column, the fixture is arranged on the central axis of the limiting column and slides along the axial direction of the limiting column.

The existing circular tube notching equipment is inconvenient to use, and has the defects of low efficiency and poor machining effect during machining, so that the circular tube notching equipment has certain improvement space.

Disclosure of Invention

The utility model aims at the above-mentioned problem that prior art exists, provide a pipe fitting lateral wall die cut die.

The purpose of the utility model can be realized by the following technical proposal: a pipe sidewall notching die, comprising:

the lower die holder comprises a bottom plate, a pipe fitting positioning assembly, a guide rail and a punching block, the pipe fitting positioning assembly is fixedly connected with the bottom plate, the guide rail is arranged on the bottom plate, the punching block is arranged on the bottom plate and connected with the guide rail, the punching block can move towards the pipe fitting positioning assembly along the guide rail, and the punching block is provided with a driving inclined surface;

the upper die base, it can move towards the die holder, the upper die base include the lifter plate and with the wedge of drive inclined plane looks adaptation, the wedge with lifter plate fixed connection works as the lifter plate court when the bottom plate removed the wedge passes through the drive inclined plane promotes die-cut piece removes.

Preferably, the lower die holder further comprises a fixing plate, the fixing plate comprises a first station and a second station, the first station is located right below the lifting plate, the bottom plate is movably connected with the fixing plate, and the bottom plate can move between the first station and the second station.

Preferably, the lifting plate is provided with a guide sleeve, the fixing plate is provided with a guide post, and the guide post is arranged in the guide sleeve in a penetrating mode so as to guide the lifting plate to move along the guide post.

Preferably, the lifter plate is provided with an upper limiting block, the fixed plate is provided with a lower limiting block, and the upper limiting block is used for being in collision connection with the lower limiting block so as to limit the distance between the lifter plate and the bottom plate.

Preferably, the bottom plate is provided with a fixed block and a reset pull rod, the reset pull rod movably penetrates through the fixed block, one end of the reset pull rod is fixedly connected with the punching block, a reset spring is sleeved at the other end of the reset pull rod, and the reset spring is in abutting connection with the fixed block.

Preferably, the number of the punching and cutting blocks is at least two, the number of the wedge-shaped blocks is the same as that of the punching and cutting blocks, the wedge-shaped blocks are arranged in a one-to-one correspondence manner, and each punching and cutting block is arranged around the pipe positioning assembly.

Preferably, the pipe positioning assembly comprises a positioning pipe and a die core pipe, the positioning pipe is connected with the bottom plate, the die core pipe is sleeved on the positioning pipe, and the punching and cutting block is aligned with the die core pipe and can move towards the die core pipe.

Preferably, the pipe wall of the die core pipe is provided with at least two forming holes, the punching block is provided with a punching cutter, and the punching cutter is matched with the forming holes in shape.

Preferably, the pipe fitting positioning assembly further comprises a base, the base is connected with the bottom plate, the positioning pipe is connected with the base, the base is provided with at least one indexing groove, the bottom of the die core pipe is provided with a locking block, and the locking block is embedded in the indexing groove.

Preferably, a feed inlet is formed in the pipe wall of the positioning pipe, a feed opening is formed in the bottom of the positioning pipe and communicated with the feed inlet, and the feed inlet is aligned to the forming hole and used for receiving punched waste materials.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the die-cut workpiece punching machine is very convenient to use, high in machining efficiency and high in workpiece precision after punching.

2. Set up movable structure with the bottom plate for the bottom plate can move on the fixed plate, when needs installation or take out the pipe fitting, moves the bottom plate to the second station like this, when needing die-cut processing pipe fitting, then moves the bottom plate to first station, has just so made things convenient for the installation of pipe fitting and has taken out greatly, and can not need not to lift up the lifter plate completely, thereby has improved work efficiency greatly, has optimized whole course of working.

3. When the punching block moves, the resetting pull rod is pulled by the punching block, the resetting spring is compressed at the moment, after the lifting plate rises, the punching block loses external force, the resetting spring opens and drives the resetting pull rod to move towards the rear end, the resetting pull rod pulls the punching block to reset, and the purpose that the punching block automatically moves back to the original position is realized.

4. Two wedges can promote two simultaneously and dash the stripping and slicing piece for two are dashed the stripping and slicing piece and are removed towards pipe fitting locating component, and two are dashed the stripping and slicing piece and set up around pipe fitting locating component, just so can once only punch a hole to the pipe wall both sides of pipe fitting, thereby once only process out two slotted holes.

5. The mould core pipe is actually detachably sleeved on the positioning pipe, and the mould core pipe is of a pipe body structure, so that a pipe to be processed can be inserted into the mould core pipe, then the mould core pipe is sleeved on the positioning pipe together with the pipe, the pipe is positioned between the mould core pipe and the positioning pipe, the positioning pipe penetrates through the pipe to support the pipe, and the pipe is punched after being fixed by the positioning pipe and the mould core pipe.

6. The mould core pipe can be connected with the base to restriction mould core pipe rotates, and locking block and graduated slot can also play the effect of location, and when the locking block was inlayed and is established in the graduated slot, the shaping hole just in time aimed at the cutter on the punching piece, thereby played and aimed at the effect.

7. The die cutter that dashes the stripping and slicing piece cuts into the downthehole back of shaping, can be with the die-cut come down of partial pipe wall of pipe fitting, and the waste material that the die-cut got off can enter into in the registration arm along the feed inlet, then drops from the feed opening, just so can play the effect of automatic blanking.

Drawings

Fig. 1 is the structure schematic diagram of the pipe fitting side wall notching die of the utility model.

Fig. 2 is a schematic view of the state of the bottom plate of the present invention at the first station.

Fig. 3 is a schematic view of the state of the bottom plate at the second station.

Fig. 4 is a schematic structural view of the lower die holder of the present invention.

Fig. 5 is a schematic structural diagram of the pipe fitting positioning assembly of the present invention.

Fig. 6 is an exploded view of the pipe positioning assembly of the present invention.

Fig. 7 is a schematic structural view of the positioning tube of the present invention.

In the figure, 100, a lower die holder; 110. a base plate; 120. punching and cutting into blocks; 121. a drive ramp; 122. punching a cutter; 130. a fixing plate; 131. a guide post; 132. a lower limiting block; 140. a first station; 150. a second station; 160. a fixed block; 170. a reset pull rod; 171. a return spring; 180. a guide rail; 200. an upper die holder; 210. a lifting plate; 211. a guide sleeve; 212. an upper limit block; 220. a wedge block; 300. a pipe fitting positioning assembly; 310. a positioning tube; 311. a feed inlet; 312. a feeding port; 320. a mold core tube; 321. forming holes; 322. a locking block; 330. a base; 331. an indexing groove.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, and fig. 7, a pipe side wall notching die includes: the lower die holder 100 and the upper die holder 200 are configured to punch the side wall of the pipe by driving the punch 120 through the movement of the upper die set, thereby forming the slot in the wall of the pipe.

It should be noted here that the pipe fitting is of a pipe body structure, in the existing machining process, a groove hole needs to be punched in the pipe wall of the pipe fitting, and in the pipe fitting side wall punching operation, strict precision requirements are placed on the size and the position of a punched groove body, once the size or the position of the punched groove body or the quality after punching has deviation, a workpiece is scrapped, and the existing punching die cannot meet the work of punching the groove in the pipe fitting side wall.

The lower die holder 100 includes a bottom plate 110, a tube positioning assembly 300, a guide rail 180, and a punching block 120, wherein the bottom plate 110 is a plate-shaped structure, the tube positioning assembly 300 is used for clamping the tube and positioning the tube to a set position, and the punching block 120 is capable of punching the wall surface of the tube, thereby punching a slot.

The pipe positioning assembly 300 is fixedly connected to the bottom plate 110, and in a specific structure, the pipe positioning assembly 300 is vertically fixed to the middle of the bottom plate 110, and a pipe can be installed on the pipe positioning assembly 300 and then die-cut by the die cutting block 120.

The die cutting block 120 is disposed on the bottom plate 110, and it should be noted that the die cutting block 120 can slide or move on the bottom plate 110, and the die cutting block 120 can move towards the tube positioning assembly 300; the base plate 110 is provided with rails 180 and the die cut blocks 120 are provided to the base plate 110 and coupled to the rails 180 such that the die cut blocks 120 are positioned along the rails 180 either closer to the tube positioning assembly 300 or farther from the tube positioning assembly 300.

In an actual structure, the guide rail 180 includes two guide blocks, the guide blocks are in an inverted L-shaped structure, and the two guide blocks respectively abut against two sides of the punching block 120, so that the punching block 120 can only move along the guide rail 180, and the punching block 120 cannot move upwards.

The punching and cutting block 120 is provided with a driving inclined plane 121; preferably, the rear end surface of the die-cutting block 120 is provided with a driving inclined surface 121, and the upper die holder 200 can push the die-cutting block 120 to move along the guide rail 180 toward the tube positioning assembly 300 by the driving inclined surface 121.

The upper die holder 200 may be disposed above the lower die holder 100, and the upper die holder 200 may move towards the lower die holder 100, the upper die holder 200 includes a lifting plate 210 and a wedge block 220 adapted to the driving inclined surface 121, the wedge block 220 is fixedly connected to the lifting plate 210, and when the lifting plate 210 moves towards the bottom plate 110, the wedge block 220 pushes the punching block 120 to move through the driving inclined surface 121.

Preferably, the upper die holder 200 is used for driving the wedge block 220 to move up and down through the lifting plate 210, when the lifting plate 210 drives the wedge block 220 to move down, the wedge block 220 is in contact with the driving inclined surface 121 of the punching block 120, and along with the continuous descending of the lifting plate 210, the wedge block 220 and the driving inclined surface 121 convert the vertical acting force into the horizontal acting force, so that the punching block 120 moves towards the pipe positioning assembly 300 and punches the pipe, and thus, a slotted hole can be punched in the pipe wall of the pipe.

As shown in fig. 1, 2, 3, 4 and 5, in addition to the above embodiments, the lower die base 100 further includes a fixing plate 130, preferably, the fixing plate 130 is a large plate body, which is larger than the areas of the lifting plate 210 and the bottom plate 110; the fixing plate 130 includes a first station 140 and a second station 150, the first station 140 is a punching station, the second station 150 is a position for loading or unloading the pipe, and the first station 140 is adjacent to the second station 150.

The first station 140 is located right below the lifting plate 210, and when the lifting plate 210 is lowered, the lifting plate 210 can move towards the first station 140, and when the bottom plate 110 is located at the first station 140, the lifting plate 210 can drive the punching block 120 to move through the wedge block 220.

The bottom plate 110 is movably connected to the fixing plate 130, and the bottom plate 110 is movable between the first station 140 and the second station 150, when a pipe is loaded or a processed pipe is taken out, the bottom plate 110 can be moved to the second station 150 first, and at this time, there is no block above the bottom plate 110, so that the pipe can be loaded or taken out conveniently, and when the pipe needs to be processed, the bottom plate 110 is pushed to the first station 140, so that the lifting plate 210 can drive the punching block 120 to punch the pipe when descending.

Here, since the punching die has the structure of the upper die holder 200 and the lower die holder 100, in order to perform the punching operation, the lifting plate 210 needs to be disposed above the bottom plate 110, and the distance between the lifting plate and the bottom plate is small, so that the lifting plate 210 obstructs a space for loading and unloading, which makes it difficult to load a pipe to be processed or take out a processed pipe.

In order to overcome the above difficulties, the bottom plate 110 is particularly provided with a movable structure, so that the bottom plate 110 can move on the fixing plate 130, when the pipe fitting needs to be installed or taken out, the bottom plate 110 is moved to the second station 150, when the pipe fitting needs to be punched and processed, the bottom plate 110 is moved to the first station 140, the pipe fitting is greatly convenient to install and take out, the lifting plate 210 does not need to be lifted, the working efficiency is greatly improved, and the whole processing process is optimized.

It should also be noted here that, the fixing plate 130 is provided with the limiting guide blocks, the limiting guide blocks are actually guide rail structures, two sets of limiting guide blocks respectively abut against two sides of the bottom plate 110, so that the bottom plate 110 cannot move towards two sides and can only slide along the limiting guide blocks, the first station 140 is provided with the stopper, the edge of the bottom plate 110 can abut against the stopper to be connected to position the bottom plate 110, in the actual working process, two sides of the bottom plate 110 abut against the two sets of limiting guide blocks to be connected, the front edge of the bottom plate 110 abuts against the stopper to be connected, so that the bottom plate 110 is just located below the lifting plate 210, which facilitates the movement of the bottom plate 110 and the positioning of the bottom plate 110.

As shown in fig. 1, 2 and 4, in the above embodiment, the lifting plate 210 is provided with the guide sleeve 211, the fixing plate 130 is provided with the guide post 131, and the guide post 131 is inserted into the guide sleeve 211 to guide the lifting plate 210 to move along the guide post 131.

Preferably, the guide posts 131 can penetrate through the guide sleeves 211, so that the lifting plate 210 can move along the guide posts 131 when lifting, thus ensuring the stability and precision of the lifting plate 210 when lifting.

As shown in fig. 1, 2 and 4, in addition to the above embodiment, the lifting plate 210 is provided with an upper limiting block 212, the fixing plate 130 is provided with a lower limiting block 132, and the upper limiting block 212 is used for being in interference connection with the lower limiting block 132 so as to limit the distance between the lifting plate 210 and the bottom plate 110.

Preferably, since the lifting plate 210 drives the punching block 120 to move through the wedge block 220, the moving distance of the punching block 120 is proportional to the descending distance of the lifting plate 210, i.e. the larger the descending distance of the lifting plate 210, the smaller the distance between the lifting plate 210 and the bottom plate 110, the larger the displacement of the driving block; in order to prevent the driving block from being displaced too much, the upper limit block 212 and the lower limit block 132 need to be provided.

When the lifting plate 210 descends to a certain position, the upper limiting block 212 and the lower limiting block 132 are abutted together, so that the lifting plate 210 cannot descend continuously, and the distance between the lifting plate 210 and the bottom plate 110 and the displacement distance of the punching and cutting block 120 can be controlled.

As shown in fig. 1, 2 and 4, on the basis of the above embodiment, the bottom plate 110 is provided with a fixing block 160 and a return rod 170, the return rod 170 movably passes through the fixing block 160, one end of the return rod 170 is fixedly connected with the punching block 120, and the other end of the return rod 170 is sleeved with a return spring 171, and the return spring 171 is in interference connection with the fixing block 160.

Preferably, the fixing block 160 is fixed on the bottom plate 110, the reset rod 170 penetrates through the fixing block 160 and can slide, when the punching block 120 moves, the reset rod 170 can move along with the punching block 120, in an actual structure, the middle of the reset rod 170 penetrates through the fixing block 160, the front end of the reset rod 170 is fixedly connected with the punching block 120, and two ends of the reset spring 171 are respectively connected with the rear end of the reset rod 170 and the fixing block 160 in an abutting mode.

When the punching and cutting block 120 moves, the reset pull rod 170 is pulled by the punching and cutting block 120, the reset spring 171 is compressed at the moment, after the lifting plate 210 is lifted, the punching and cutting block 120 loses external force, the reset spring 171 is opened at the moment and drives the reset pull rod 170 to move towards the rear end, and the reset pull rod 170 pulls the punching and cutting block 120 to reset, so that the purpose that the punching and cutting block 120 automatically moves back to the original position is achieved.

As shown in fig. 1, 2, 3 and 4, on the basis of the above embodiment, the number of the die-cutting blocks 120 is at least two, the number of the wedge-shaped blocks 220 is the same as the number of the die-cutting blocks 120, and the wedge-shaped blocks 220 are arranged in a one-to-one correspondence manner, and each die-cutting block 120 is arranged around the pipe positioning assembly 300.

Preferably, in an actual structure, two punching blocks 120 are respectively located at two sides of the pipe positioning assembly 300, the number of the wedge blocks 220 is two, the two wedge blocks 220 can push the two punching blocks 120 at the same time, so that the two punching blocks 120 move towards the pipe positioning assembly 300, and the two punching blocks 120 are arranged around the pipe positioning assembly 300, so that both sides of the pipe wall of the pipe can be punched at one time, and two slotted holes can be machined at one time.

It should be noted here that the number of the punching blocks 120 may also be three or four or more, and the specific number may be set according to practical situations, so that a plurality of slots can be processed at one time.

As shown in fig. 1, 2, 3, 4, 5, 6 and 7, based on the above embodiment, the pipe positioning assembly 300 includes a positioning tube 310 and a die core tube 320, preferably, the positioning tube 310 is used for positioning the die core tube 320 and can also support the pipe, and the die core tube 320 is used for clamping the pipe and punching the groove by cooperating with the punching block 120.

The positioning pipe 310 is connected with the bottom plate 110, and the positioning pipe 310 is vertically arranged on the bottom plate 110; the core tube 320 is sleeved on the positioning tube 310, a gap for clamping the pipe fitting is formed between the core tube 320 and the positioning tube 310, and the punching and cutting block 120 is aligned with the core tube 320 and can move towards the core tube 320.

Preferably, the positioning tube 310 is fixed on the bottom plate 110, the mold core tube 320 is detachably sleeved on the positioning tube 310, and since the mold core tube 320 is a tube structure, the tube to be processed can be inserted into the mold core tube 320, and then the mold core tube 320 is sleeved on the positioning tube 310 together with the tube, at this time, the tube is located between the mold core tube 320 and the positioning tube 310, the positioning tube 310 penetrates through the tube to support the tube, and the tube can be punched after being fixed by the positioning tube 310 and the mold core tube 320.

It should be noted that, during installation, the pipe may be inserted into the core tube 320, and then the core tube 320 is fitted over the positioning tube 310, so that the punching block 120 can be matched with the core tube 320 for punching.

As shown in fig. 1, 2, 3, 4, 5, 6, and 7, in addition to the above embodiment, at least two forming holes 321 are formed in the tube wall of the core tube 320, the die-cutting block 120 is provided with the die blade 122, and the die blade 122 is adapted to the shape of the forming holes 321.

Preferably, the shape of the forming hole 321 is consistent with the shape of a slot to be processed on the pipe, when the pipe is inserted into the core tube 320, the forming hole 321 corresponds to the wall of the pipe, the die-cutting block 120 can insert the die cutter 122 into the forming hole 321 by moving, and the part of the pipe corresponding to the forming hole 321 is cut by the die cutter 122.

As shown in fig. 1, 2, 4, 5, 6, and 7, based on the above embodiment, the pipe positioning assembly 300 further includes a base 330, the base 330 is connected to the bottom plate 110, the positioning pipe 310 is connected to the base 330, the base 330 is provided with at least one indexing groove 331, the bottom of the core pipe 320 is provided with a locking block 322, and the locking block 322 is embedded in the indexing groove 331.

Preferably, the base 330 may be a part of the base plate 110, the positioning tube 310 may be fixed to the base plate 110 through the base 330, and the locking block 322 is inserted into the indexing groove 331, so that the core tube 320 can be coupled to the base 330 to limit the rotation of the core tube 320, and the locking block 322 and the indexing groove 331 can also perform a positioning function, and when the locking block 322 is inserted into the indexing groove 331, the forming hole 321 is exactly aligned with the cutter on the punching block 120 to perform an alignment function.

It should be further noted that, in the actual structure, four forming holes 321 are uniformly spaced on the tube wall of the core tube 320, while the number of the punching blocks 120 is two and located on both sides of the positioning tube 310, the number of the indexing grooves 331 is at least twice as large as the number of the locking blocks 322, for example, the number of the locking blocks 322 is one, the number of the indexing grooves 331 is two, and when the locking blocks 322 are located in one of the indexing grooves 331, the punching blades 122 of two punching blocks 120 enter two of the forming holes 321 for machining; the core barrel 320 can then be lifted and rotated so that the locking block 322 is disposed in the other indexing slot 331, thus aligning the other two forming holes 321 with the punch 120.

As shown in fig. 1, 4, 5, 6, and 7, in the above embodiment, a feed opening 311 is formed in a tube wall of the positioning tube 310, a feed opening 312 is formed in a bottom of the positioning tube 310, the feed opening 312 is communicated with the feed opening 311, and the feed opening 311 is aligned with the forming hole 321 and is used for receiving the punched scraps.

Preferably, since the positioning tube 310 is of a tube body structure, the feed inlet 311 is communicated with the feed outlet 312, the feed inlet 311 is aligned with the forming hole 321 of the die core tube 320, after the punch 122 of the punching block 120 cuts into the forming hole 321, a part of tube wall of the tube can be punched, the punched waste can enter the positioning tube 310 along the feed inlet 311 and then fall from the feed outlet 312, and thus, the effect of automatic blanking can be achieved.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. A pipe fitting sidewall notching die, comprising:

2. The pipe fitting sidewall notching die of claim 1, wherein: the lower die holder further comprises a fixing plate, the fixing plate comprises a first station and a second station, the first station is located under the lifting plate, the bottom plate is movably connected with the fixing plate, and the bottom plate can move between the first station and the second station.

3. A pipe fitting sidewall notching die, as set forth in claim 2, wherein: the lifting plate is provided with a guide sleeve, the fixing plate is provided with a guide post, and the guide post is arranged in the guide sleeve in a penetrating mode so as to guide the lifting plate to move along the guide post.

4. A pipe fitting sidewall notching die, as set forth in claim 2, wherein: the lifter plate is provided with spacing piece on, the fixed plate is provided with spacing piece down, thereby go up spacing piece be used for with thereby limit is contradicted to be connected to spacing piece down the lifter plate with the distance of bottom plate.

5. A pipe fitting sidewall notching die, as set forth in claim 2, wherein: the bottom plate is provided with fixed block and reset pull rod, the mobilizable passing of reset pull rod the fixed block, the one end of reset pull rod with die-cut piece fixed connection, and the other pot head of reset pull rod is equipped with reset spring, reset spring with the fixed block is contradicted and is connected.

6. The pipe fitting sidewall notching die of claim 1, wherein: the quantity of punching and cutting the piece is two at least, the quantity of wedge with the same and the one-to-one setting of quantity of punching and cutting the piece, each the punching and cutting piece centers on pipe fitting locating component sets up.

7. A pipe fitting sidewall notching die, as set forth in claim 2, wherein: the pipe fitting positioning assembly comprises a positioning pipe and a die core pipe, the positioning pipe is connected with the bottom plate, the die core pipe is sleeved on the positioning pipe, and the punching and cutting block is aligned to the die core pipe and can move towards the die core pipe.

8. The pipe fitting sidewall notching die of claim 7, wherein: the die core pipe is characterized in that at least two forming holes are formed in the pipe wall of the die core pipe, the punching block is provided with a punching cutter, and the punching cutter is matched with the forming holes in shape.

9. The pipe fitting sidewall notching die of claim 8, wherein: the pipe fitting positioning assembly further comprises a base, the base is connected with the bottom plate, the positioning pipe is connected with the base, the base is provided with at least one indexing groove, the bottom of the die core pipe is provided with a locking block, and the locking block is embedded in the indexing groove.

10. The pipe fitting sidewall notching die of claim 8, wherein: the feed inlet has been seted up to the pipe wall of registration arm, and the feed opening has been seted up to the bottom of registration arm, the feed opening with the feed inlet intercommunication, the feed inlet is aimed at the shaping hole is used for accepting the waste material after the die-cut.