CN117183023A - Automatic perforating machine for plastic pipe fittings - Google Patents

Abstract

The invention relates to the field of pipe fitting processing equipment, in particular to an automatic plastic pipe fitting perforating machine, which comprises a main support, wherein the main support is of an L-shaped structure, sliding plates are arranged in a horizontal section and a vertical section of the main support in a sliding manner, and a perforating part for processing bolt holes on the flange surface of an elbow flange is arranged on one side of the sliding plate, which is close to the inner part of the main support; according to the invention, the drill bits with the required punching quantity and diameter can be fixedly arranged in the drill bit seat according to the requirement, so that the drill bit is suitable for holes with different specifications and holes with different quantities.

Description

Automatic perforating machine for plastic pipe fittings

Technical Field

The invention relates to the field of pipe fitting processing equipment, in particular to an automatic plastic pipe fitting perforating machine.

Background

Plastic tubing is the part that connects the pipes into a pipeline. The connecting method can be divided into four types of socket pipe fittings, threaded pipe fittings, flange pipe fittings and welding pipe fittings. And the device comprises an elbow, a flange, a three-way pipe, a four-way pipe, a reducing pipe and the like. The elbow flange pipe fitting is a part which is used at the turning part of a pipeline and connects the pipelines mutually through bolts, so that a through hole for the bolts to penetrate is required to be machined on the flange plate of the elbow flange.

When the existing elbow flange is perforated, the whole elbow flange pipe fitting is clamped and fixed by adopting a clamp, and then two flange faces of the elbow flange pipe fitting are drilled sequentially according to the requirement. The punching mode can only sequentially punch two flange surfaces of the elbow flange pipe fitting, the processing efficiency is low, and when the punching position is replaced, the elbow flange needs to be clamped again, so that clamping errors exist, the hole errors on the two flange surfaces of the elbow flange are easy to be larger, and the elbow flange is difficult to assemble; in addition, current equipment that punches to elbow flange can't carry out effectual regulation to diameter, quantity and the position that hole apart from flange edge that punches according to actual punching needs to make the adaptability of current drilling equipment relatively poor.

Disclosure of Invention

In order to solve the technical problems, the invention adopts the following technical scheme: the utility model provides an automatic puncher of plastics pipe fitting, includes the main support, and the main support is L type structure, and the horizontal segment of main support all slides with the inside of vertical section and is provided with the sliding plate, and the sliding plate is close to the inside one side of main support and is provided with the part of punching to the flange face processing bolt hole of return bend flange.

The punching component comprises a fixed shaft fixedly mounted on one side of the sliding plate, which is close to each other, a supporting component for carrying out internal supporting clamping on an inner hole of the bent pipe flange is arranged at one end of the fixed shaft, the middle part of the fixed shaft axially slides along the fixed shaft and is rotationally provided with an alignment disc, sliding grooves are formed in the alignment disc at equal intervals along the circumferential direction of the alignment disc, an alignment block is arranged in the sliding grooves in a radial sliding manner along the alignment disc, a drill bit seat is rotatably arranged on one side of the alignment block, which is close to the supporting component, and a drill bit is arranged in the drill bit seat in a clamping and mounting manner.

The auxiliary plate is installed to one side that counterpoint piece kept away from counterpoint dish center, and it is provided with the initiative board to follow its length direction slip on the auxiliary plate, and the axial elastic sliding along the fixed axle of corresponding position of one side that the initiative board was kept away from counterpoint dish is provided with No. one centre gripping frame, and one side that the initiative board was kept away from to No. one centre gripping frame is provided with No. two centre gripping frames through the guide bar slip, and No. one centre gripping frame and No. two centre gripping frames symmetry each other and be L type structure, have seted up the locking groove along the radial equidistant of counterpoint dish on the lateral wall of sliding groove inside, and one side symmetry elastic sliding is kept away from counterpoint dish center by the initiative board is provided with the locking piece that is used for inserting to the locking inslot.

Through the cooperation of the supporting component on two parts that punch to lock the position of return bend flange, afterwards install on the drill bit seat according to the drill bit of the corresponding quantity of required selection and diameter that punches, remove first centre gripping frame and No. two centre gripping frame centre gripping later in return bend flange's ring flange both sides, slide the alignment piece cooperation and rotate the alignment dish and drive the drill bit and remove to the trompil position, rotate the drill bit simultaneously and remove the alignment dish and process the bolt hole simultaneously to two ring flanges of return bend flange.

Preferably, the support assembly comprises a support frame fixedly arranged at one end of the fixed shaft, which is close to each other, the support frame is internally provided with a support rubber plate which slides along the radial direction of the support frame at equal intervals along the circumferential direction of the support frame, a track disc is rotatably arranged on the fixed shaft and positioned at one side of the support frame, which is far away from each other, the track disc is provided with a vortex line groove which expands outwards along the circumferential direction of the track disc at equal intervals, and the support rubber plate is matched with the notch of the vortex line groove through a supporting rod.

Preferably, an actuating motor is arranged on the fixed shaft, a driving gear is arranged on an output shaft of the actuating motor, and the driving gear is meshed with a driven gear arranged on the track disc.

Preferably, the auxiliary plate is internally provided with a latch plate in an elastic sliding manner along the thickness direction of the auxiliary plate, inclined-plane latches are arranged on the latch plate at equal intervals along the length direction of the latch plate, one side of the first clamping frame, which is close to the driving plate, is provided with a guide post 236 which penetrates through the driving plate 231 in a sliding manner, one end of the guide post, which is close to the auxiliary plate, is provided with a position plate, a position, which is close to the auxiliary plate, on the driving plate is provided with a locking block in an elastic sliding manner along the radial direction of the alignment plate, and the position, which is close to the center of the alignment plate, of the locking block is provided with an inclined plane.

Preferably, one side of the first clamping frame, which is far away from the driving plate, is rotatably provided with a threaded rod, and the threaded rod is in threaded connection with the second clamping frame.

Preferably, the drill bit seat is close to one side of the main support and is coaxially provided with a belt wheel, the counterpoint block is far away from one side of the center of the counterpoint disk and is symmetrically rotated at a position corresponding to the belt wheel and is provided with a tight supporting roller, the outer side of the middle part of the counterpoint disk is provided with a tight tensioning block which elastically slides along the radial direction of the counterpoint disk at equal intervals along the circumferential direction of the bit, one side of the tight tensioning block is rotated and is provided with a tight tensioning roller, the tight tensioning roller and the outer side of the belt wheel are jointly wound with a synchronous belt, one side of any one tight tensioning block, which is far away from the counterpoint block, is provided with a rotating motor, and an output shaft of the rotating motor is connected with the tight tensioning roller at a corresponding position.

Preferably, a driven rack is arranged on one side, far away from the inside of the main support, of the sliding plate, and a synchronous gear is rotatably arranged on the left side of the lower part of the main support, and the driven rack is meshed with the synchronous gear.

Preferably, the position that the counterpoint dish is close to the main support coaxial arrangement has the worm wheel, and the inside slip of sliding plate is provided with the flitch, and the flitch rotates with the counterpoint dish to be connected, and the slip plate is kept away from the inside one side of main support and is installed and promote the cylinder, promotes the telescopic link and the flitch connection of cylinder, and the rear portion rotation of flitch is provided with the worm, and worm wheel meshing, the inside slip cap of worm are equipped with the transfer line, and the one end that the transfer line is close to each other is through bevel gear interconnect transmission.

The invention has the beneficial effects that: 1. according to the invention, the two support assemblies are adopted to support and clamp the inner diameter of the elbow flange, so that the two flange surfaces of the elbow flange can correspond to the punching parts at the corresponding positions, and then the two flange surfaces of the elbow flange can be punched through the two punching parts at the same time, thereby improving the punching efficiency, only needing to clamp the elbow flange once, avoiding clamping errors and ensuring the punching precision.

2. According to the invention, the drill bits with the required punching number and diameter can be fixedly arranged in the drill bit seat according to the requirements, so that holes with different specifications and holes with different numbers are adapted, the drill bits can be arranged at equal intervals all the time through the counterpoint blocks sliding in the sliding groove, so that the position accuracy of the holes is ensured, in addition, the distance between the drill bits and the flange edge of the elbow flange can be adjusted through sliding the position of the driving plate, the punching requirements of different positions are adapted, and the punching adaptability is increased.

3. According to the invention, the locking piece is inserted into the locking groove during punching, so that the lower part of the drill bit is fixed, and the first clamping frame and the second clamping frame are clamped at the edge of the flange of the elbow flange, so that the stability of the drill bit and the elbow flange can be improved, and the situations of aperture expansion and deflection are avoided.

4. According to the invention, the worm wheel and the worm are matched, so that the two alignment plates can synchronously rotate in real time, and the positions of threaded holes on the two flange surfaces of the elbow flange can be in one-to-one correspondence, thereby avoiding the phenomenon that the elbow flange is difficult to assemble.

Drawings

The invention will be further described with reference to the drawings and examples.

FIG. 1 is a schematic view of the overall structure of the present invention when the elbow flange is perforated.

Fig. 2 is a schematic structural view of a main bracket, an alignment disc, a supporting component, a fixed shaft, a driven rack, a synchronous gear, a transmission rod, a worm wheel and a worm.

FIG. 3 is a partial cross-sectional view of a main bracket, a sliding plate, a worm wheel, a push plate, a push cylinder, a worm, a fixed shaft, a support assembly and an alignment plate according to the present invention.

FIG. 4 is a partial cross-sectional view of the support assembly and stationary shaft of the present invention.

Fig. 5 is a schematic structural view of a track pad in the present invention.

Fig. 6 is a schematic view of the structure of the punching member in the present invention.

Fig. 7 is a partial cross-sectional view of the perforated member of the present invention after the stationary shaft and support assembly are removed.

Fig. 8 is a partial cross-sectional view of the punch assembly of the present invention after removal of the stationary shaft, support assembly, and alignment disk.

FIG. 9 is a schematic view of the structure of the driving plate, the first clamping frame, the second clamping frame, the guide post, the position plate, the locking block and the threaded rod according to the present invention.

Fig. 10 is a schematic structural view of an aligning plate, a tensioning block, a tensioning roller, a rotating motor, an aligning block, a belt wheel and a supporting roller in the invention.

Fig. 11 is a schematic structural view of an alignment plate according to the present invention.

Fig. 12 is a schematic view of the structure of the elbow flange.

In the figure: 1. a main support; 2. a punching part; 11. a sliding plate; 12. a worm wheel; 13. a pushing plate; 14. a pushing cylinder; 15. a worm; 21. a fixed shaft; 22. a support assembly; 23. an alignment block; 24. a drill bit seat; 25. an alignment plate; 111. a driven rack; 112. a synchronizing gear; 151. a transmission rod; 221. a support frame; 222. supporting a rubber plate; 223. a track pad; 224. a vortex groove; 225. a driven gear; 226. executing a motor; 227. a drive gear; 230. an auxiliary plate; 231. an active plate; 232. a first clamping frame; 233. a second clamping frame; 234. a locking member; 235. a tooth clamping plate; 236. a guide post; 237. a position plate; 238. a locking block; 239. a threaded rod; 241. a drill bit; 242. a pressing roller; 243. a belt wheel; 251. a sliding groove; 252. a locking groove; 253. a tensioning block; 254. a tension roller; 255. and rotating the motor.

Detailed Description

Embodiments of the present invention are described in detail below. The following examples are illustrative only and are not to be construed as limiting the invention. The examples are not to be construed as limiting the specific techniques or conditions described in the literature in this field or as per the specifications of the product.

Referring to fig. 1 and 12, an automatic plastic pipe perforating machine comprises a main bracket 1, wherein the main bracket 1 is of an L-shaped structure, sliding plates 11 are slidably arranged in a horizontal section and a vertical section of the main bracket 1, and a perforating part 2 for processing bolt holes on a flange surface of a bent pipe flange is arranged on one side of the sliding plate 11, which is close to the inside of the main bracket 1; when the bolt holes are required to be machined on the two flanges of the elbow flange, the elbow flange is firstly placed on the upper side of the punching component 2 positioned at the lower part, the lower side of the punching component 2 is clamped and locked with the flange positioned at the lower side, then the sliding plate 11 is moved to drive the elbow flange to move, so that the flange positioned at the left side is correspondingly clamped at the right end of the upper side of the punching component 2, the elbow flange is correspondingly locked between the punching components 2, and then the bolt holes are synchronously machined on the two flanges of the elbow flange through the punching component 2.

Referring to fig. 1, 2 and 3, the punching part 2 includes a fixed shaft 21 fixedly installed on one side of the sliding plate 11 close to each other, a supporting assembly 22 for supporting and clamping the inner hole of the bent pipe flange is provided at one end of the fixed shaft 21 close to each other, a driven rack 111 is installed at one side of the sliding plate 11 far from the inside of the main bracket 1, a synchronizing gear 112 is rotatably provided at the left side of the lower part of the main bracket 1, and the driven rack 111 is engaged with the synchronizing gear 112; when the elbow flange needs to be punched, one flange plate of the elbow flange is placed on the corresponding support component 22, the inner diameter of the corresponding position of the elbow flange is clamped through the support component 22, so that the flange plate of the elbow flange is clamped and locked, then the corresponding single sliding plate 11 is moved, the two sliding plates 11 can be synchronously moved close to or away from each other through the meshing of the driven rack 111 and the synchronous gear 112, and then the sliding plate 11 drives the other flange of the elbow flange to correspondingly move to the position of the other support component 22 through the support component 22 and accept clamping, so that the two flange faces of the elbow flange are locked.

Referring to fig. 3, 4 and 5, in order to clamp and lock the bent pipe flange without occupying the space outside the flange plate, in this example, a support assembly 22 is designed, the support assembly 22 includes a support frame 221 fixedly installed at one end of the fixed shaft 21 close to each other, a support rubber plate 222 sliding along the radial direction of the support frame 221 is provided at equal intervals along the circumferential direction of the support frame 221, a track disc 223 is rotatably provided on the fixed shaft 21 and located at one side of the support frame 221 far away from each other, a vortex line groove 224 expanding outwards is provided at equal intervals along the circumferential direction of the track disc 223, the support rubber plate 222 is matched with the notch of the vortex line groove 224 through a supporting rod, an execution motor 226 is installed on the fixed shaft 21, a driving gear 227 is installed on the output shaft of the execution motor 226, and the driving gear 227 is meshed with a driven gear 225 installed on the track disc 223; when the inner diameter of the elbow flange needs to be clamped and locked, one flange plate of the elbow flange is abutted against the side surface of the support frame 221, the support rubber plate 222 stretches into an inner hole of the elbow flange, then the execution motor 226 is started, an output shaft of the execution motor 226 drives the driven gear 225 to rotate through the driving gear 227, the driven gear 225 drives the track plate 223 to rotate, and the support rubber plate 222 is synchronously pushed outwards along the radial direction of the support frame 221 through the vortex grooves 224 when the track plate 223 rotates, so that the support rubber plate 222 is abutted against the inner hole wall of the elbow flange, and thus the elbow flange is internally supported and clamped.

Referring to fig. 6, 7, 8 and 11, the middle part of the fixed shaft 21 slides along the axial direction thereof and is rotatably provided with a positioning disc 25, sliding grooves 251 are formed in the positioning disc 25 at equal intervals along the circumferential direction thereof, positioning blocks 23 are arranged in the sliding grooves 251 in a sliding manner along the radial direction of the positioning disc 25, a drill bit seat 24 is rotatably arranged on one side, close to the supporting component 22, of the positioning blocks 23, and a drill bit 241 is arranged in the drill bit seat 24 in a clamping and mounting manner; after the elbow flange is clamped and fixed, the drill bits 241 with corresponding diameters are selected according to the drilling requirements, and are clamped and installed on the drill bit seat 24 at corresponding positions, and the drill bits 241 are arranged at equal intervals.

In this embodiment, the sliding grooves 251 are arranged in a staggered manner, so that the number of the sliding grooves 251 close to the center of the alignment disc 25 is reduced, and the number of the sliding grooves 251 far from the center of the alignment disc 25 is increased, so that compared with the conventional arrangement, the invention can equally-spaced process a larger number of bolt holes far from the center of the alignment disc 25 under the condition that the same number of bolt holes are processed near the center of the alignment disc 25, and can adapt to equally-spaced installation of different numbers of drill bits 241, thereby increasing the adaptability of the invention.

It should be noted that, the drill bit holder 24 in this embodiment adopts an existing three-jaw drill bit fixture, which is not described in detail in this embodiment.

Referring to fig. 2, 3, 6, 7 and 8, a worm wheel 12 is coaxially installed at a position of the alignment disc 25 close to the main bracket 1, a pushing plate 13 is slidably arranged in the sliding plate 11, the pushing plate 13 is rotationally connected with the alignment disc 25, a worm 15 is rotationally arranged at the rear part of the pushing plate 13, the worm 15 is meshed with the worm wheel 12, a transmission rod 151 is slidably sleeved in the worm 15, and one ends of the transmission rods 151 close to each other are mutually connected and transmitted through bevel gears; after the required number of drill bits 241 are installed on the drill bit seat 24 in the corresponding position, the transmission rods 151 are rotated, the transmission rods 151 drive the worm wheel 12 to rotate through the worm 15, the worm wheel 12 drives the alignment disc 25 to synchronously rotate, the alignment disc 25 drives the drill bits 241 to rotate to the punching position along the flange of the bent pipe flange through the drill bit seat 24, and the two transmission rods 151 are connected with each other through the bevel gears and synchronously rotate, so that the drill bits 241 installed on the two alignment discs 25 always synchronously perform position adjustment, and punching accuracy of the two flange discs is guaranteed.

It should be noted that, when the two sliding plates 11 move synchronously, the worm 15 is connected with the transmission rod 151 in a sliding manner, one ends of the two transmission rods 151 close to each other are respectively rotatably mounted on the horizontal section and the vertical end of the same L-shaped plate, and the two transmission rods 151 are always connected through the bevel gear path, so that the two worm 15 always rotate synchronously.

Referring to fig. 6, 7, 8 and 9, an auxiliary plate 230 is mounted on a side of the alignment block 23 far from the center of the alignment plate 25, a driving plate 231 is slidably disposed on the auxiliary plate 230 along the length direction thereof, a first clamping frame 232 is elastically slidably disposed on a side of the driving plate 231 far from the alignment plate 25 along the axial direction of the fixed shaft 21 at a corresponding position, a second clamping frame 233 is slidably disposed on a side of the first clamping frame 232 far from the driving plate 231 through a guide rod, the first clamping frame 232 and the second clamping frame 233 are symmetrical to each other and are of an L-shaped structure, a guide post 236 penetrating the driving plate 231 in a sliding manner is mounted on a side of the first clamping frame 232 near the driving plate 231, a position plate 237 is mounted on one end of the guide post 236 near the auxiliary plate 230, a position near the auxiliary plate 230 on the driving plate 231 is elastically slidably disposed along the radial direction of the alignment plate 25, a locking block 238 is disposed on a position near the center of the alignment plate 25, a locking groove 252 is disposed on a side wall inside the sliding groove 251 along the radial direction of the alignment plate 25 at equal intervals, and a locking groove 252 is symmetrically disposed on a side of the driving plate 231 far from the center of the alignment plate 25, and the locking piece 252 is inserted into the locking groove 234; in the initial state, the driving plate 231 is located at the farthest position of the auxiliary plate 230 from the center of the alignment plate 25, the position plate 237 is located at one side of the locking block 238 close to the driving plate 231, so that the locking block 238 locks the position of the first clamping frame 232 at the position close to the driving plate 231 through the position plate 237, after the angle position adjustment of the drill bit 241 is completed, the locking block 238 is pulled to the direction away from the center of the alignment plate 25 until the locking block 238 is completely retracted into the inside of the driving plate 231, so that the first clamping frame 232 moves to the direction away from the driving plate 231 under the action of self elastic force, then the locking piece 234 is moved to the direction close to each other, so that the locking piece 234 exits from the inside of the locking groove 252, thereby unlocking the position of the alignment block 23, then pushing the alignment block 23 to the direction close to the center of the alignment plate 25, so that the alignment block 23 drives the first clamping frame 232 and the second clamping frame 233 to the flange edge of the flange through the driving plate 231, simultaneously pushing the first clamping frame 232 to the inside of the driving plate 231, so that the first clamping frame 232 moves to the direction away from the center of the driving plate 231 under the action of self elastic force, and then moves to the direction away from the driving plate 231, and then moves to the locking piece 234 to the direction opposite to the first clamping frame 232 to the flange edge of the flange, and the flange edge of the flange is clamped by the first clamping frame 233.

In this embodiment, the first clamping frame 232 is locked at a position close to the driving plate 231 in advance by the locking block 238, so that the second clamping frame 233 mounted on the idle alignment block 23 can be prevented from excessively extending when the drill bit 241 is fed, so that the second clamping frame 233 on the other alignment plate 25 collides with the drill bit 241 to affect the punching, in addition, when the drill bit 241 is fed, the alignment plate 25 drives the driving plate 231 to move towards the direction close to the first clamping frame 232, the driving plate 231 drives the locking block 238 to synchronously move, so that the position plate 237 is in inclined plane fit with the locking block 238, the locking block 238 is pushed towards the inside of the driving plate 231, and when the position plate 237 moves beyond the locking block 238, the locking block 238 extends under the action of self elastic force, so that the position of the position plate 237 is automatically fixed, and the first clamping frame 232 is automatically reset.

Referring to fig. 1, 6, 7 and 9, a threaded rod 239 is rotatably disposed on one side of the first clamping frame 232 away from the driving plate 231, and the threaded rod 239 is in threaded connection with the second clamping frame 233; when the first clamping frame 232 and the second clamping frame 233 are abutted against the circumferential surface of the flange of the elbow flange, the threaded rod 239 is rotated to drive the second clamping frame 233 to approach the first clamping frame 232, so that the first clamping frame 232 and the second clamping frame 233 are clamped on two sides of the flange of the elbow flange, the position of the driving plate 231 is fixed, stability is provided for one end, close to the elbow flange, of the drill bit 241, and the flange of the elbow flange is not easy to shake due to vibration when the drill bit 241 punches, so that punching accuracy is guaranteed.

Referring to fig. 7, 8 and 9, a latch plate 235 is elastically slidably provided in the auxiliary plate 230 along a thickness direction thereof, and inclined latches are provided on the latch plate 235 at equal intervals along a length direction thereof; when the first clamping frame 232 and the second clamping frame 233 are locked on the flange of the elbow flange, the locking piece 234 is moved to unlock the position of the alignment block 23, then the alignment block 23 is moved to the direction close to the driving plate 231 according to the distance between the threaded hole and the flange edge of the elbow flange, when the alignment block 23 is moved, the driving plate 231 is matched with the inclined surface of the latch plate 235 in an inclined manner, so that the latch plate 235 is pushed to the inside of the auxiliary plate 230, when the alignment block 23 drives the drill bit 241 to move to the corresponding punching position through the drill bit seat 24, the external force of the locking piece 234 is removed, so that the locking piece 234 stretches into the inside of the locking groove 252 again under the action of self-elastic force, the position of the alignment block 23 is fixed, meanwhile, the latch plate 235 pops out to the outside of the auxiliary plate 230 under the action of self-elastic force, and the plane part of the latch plate 231 is abutted against the outer side surface of the driving plate 231, so that the driving plate 231 is fixedly connected with the alignment block 23 through the auxiliary plate 230, and the stability during drilling is ensured.

Referring to fig. 1, 3, 8 and 10, a belt wheel 243 is coaxially installed on one side of a drill bit seat 24, which is close to a main bracket 1, a supporting roller 242 is symmetrically and rotatably arranged on one side of a counterpoint block 23, which is far away from the center of the counterpoint disk 25, and the positions corresponding to the belt wheel 243 are symmetrically and rotatably provided with a tensioning block 253, which elastically slides along the radial direction of the counterpoint disk 25, on the outer side of the middle part of the counterpoint disk 25 at equal intervals along the circumferential direction, a tensioning roller 254 is rotatably arranged on one side of the tensioning block 253, which is close to the counterpoint block 23, a synchronous belt is wound on the outer sides of the tensioning roller 254 and the belt wheel 243 together, a rotary motor 255 is installed on one side of any tensioning block 253, which is far away from the counterpoint block 23, an output shaft of the rotary motor 255 is connected with the tensioning roller 254 at the corresponding position, a pushing cylinder 14 is installed on one side of a sliding plate 11, which is far away from the inside the main bracket 1, and a telescopic rod of the pushing cylinder 14 is connected with a pushing plate 13; after the position of the alignment block 23 is fixed, the rotating motor 255 is started to drive the tensioning roller 254 to rotate, the tensioning roller 254 drives the belt pulley 243 at the corresponding position to synchronously rotate through the synchronous belt, the belt pulley 243 drives the drill bit 241 to rotate through the drill bit seat 24, then the telescopic rod extending out of the pushing cylinder 14 drives the pushing plate 13 to move towards the direction close to the elbow flange, and the pushing plate 13 drives the drill bit 241 to synchronously move through the alignment plate 25, so that bolt holes are machined on the flange of the elbow flange through the drill bit 241.

In this embodiment, the abutting roller 242 can make the synchronous belt tightly contact the outer side of the belt wheel 243 at the corresponding position, so as to ensure that the synchronous belt can stably drive the belt wheel 243.

The working principle of the invention is as follows: the first step, the inner diameter of the corresponding position of the elbow flange is supported and clamped through the supporting component 22, so that the two flange faces of the elbow flange are locked, the drill bits 241 with the corresponding diameters are selected according to the drilling requirements and are clamped and installed on the drill bit seat 24 at the corresponding position, the drill bits 241 are arranged at equal intervals, and the rotary transmission rod 151 drives the drill bits 241 to rotate to the punching position along the flange plate of the elbow flange.

In the second step, the locking block 238 is pulled in a direction away from the center of the alignment plate 25, so that the first clamping frame 232 moves in a direction away from the driving plate 231, and then the locking member 234 is moved to the inside of the locking groove 252, so as to unlock the position of the alignment block 23, and then the alignment block 23 is pushed to drive the first clamping frame 232 and the second clamping frame 233 to move to the positions on both sides of the flange of the elbow flange, so that the opposite sides of the first clamping frame 232 and the second clamping frame 233 are abutted against the circumferential surface of the flange of the elbow flange.

Third step, rotate threaded rod 239 and drive No. two centre gripping frames 233 to be close to No. one centre gripping frame 232 to make No. one centre gripping frame 232 and No. two centre gripping frames 233 through with initiative board 231 vertically one section centre gripping in return bend flange's ring flange both sides, and then with the fixed position of initiative board 231, simultaneously provide stability to the one end that bit 241 is close to return bend flange, make bit 241 when punching, the ring flange of return bend flange is difficult for taking place to rock because of the vibration, thereby guarantee the precision of punching.

Fourth, unlock the position of the alignment block 23, then move the alignment block 23 to match with the bevel latch bevel of the latch plate 235 according to the distance between the bolt hole and the flange edge of the elbow flange, push the latch plate 235 to the inside of the auxiliary plate 230, when the drill bit 241 moves to the corresponding punching position, remove the external force of the locking piece 234 to fix the position of the alignment block 23, and at the same time the latch plate 235 pops up to the outside of the auxiliary plate 230 under the action of its own elastic force, so that the driving plate 231 is fixedly connected with the alignment block 23 through the auxiliary plate 230, thereby guaranteeing the stability during drilling.

And fifthly, starting the rotary motor 255 to drive the drill bit 241 to rotate, and then extending out of the telescopic rod of the pushing cylinder 14 to drive the drill bit 241 to move towards the direction close to the elbow flange, so that bolt holes are machined in the flange plate of the elbow flange through the drill bit 241.

While embodiments of the present invention have been shown and described above, it should be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives, and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention, which is also intended to be covered by the present invention.

Claims (8)

1. The automatic perforating machine for the plastic pipe fitting comprises a main support (1), and is characterized in that the main support (1) is of an L-shaped structure, sliding plates (11) are slidably arranged in a horizontal section and a vertical section of the main support (1), and a perforating component (2) for machining bolt holes on a flange surface of a bent pipe flange is arranged on one side, close to the inner part of the main support (1), of the sliding plates (11);

the punching component (2) comprises a fixed shaft (21) fixedly arranged on one side, close to each other, of the sliding plate (11), a supporting component (22) for carrying out internal supporting clamping on an inner hole of the bent pipe flange is arranged at one end, close to each other, of the fixed shaft (21), an alignment disc (25) is axially slid and rotated along the middle part of the fixed shaft (21), sliding grooves (251) are formed in the alignment disc (25) at equal intervals along the circumferential direction of the alignment disc, alignment blocks (23) are slidably arranged in the sliding grooves (251) along the radial direction of the alignment disc (25), a drill bit seat (24) is rotatably arranged on one side, close to the supporting component (22), of the alignment blocks (23), and a drill bit (241) is arranged in the drill bit seat (24) in a clamping and mounting mode;

an auxiliary plate (230) is arranged on one side, far away from the center of the alignment disc (25), of the alignment block (23), an active plate (231) is arranged on the auxiliary plate (230) in a sliding mode along the length direction of the auxiliary plate, a first clamping frame (232) is arranged on one side, far away from the alignment disc (25), of the active plate (231) in an axial elastic sliding mode along a fixed shaft (21) at a corresponding position, a second clamping frame (233) is arranged on one side, far away from the active plate (231), of the first clamping frame (232) in a sliding mode through a guide rod, the first clamping frame (232) and the second clamping frame (233) are symmetrical to each other and are of L-shaped structures, locking grooves (252) are formed in the side wall inside the sliding grooves (251) at equal intervals in the radial direction of the alignment disc (25), and locking pieces (234) for being inserted into the locking grooves (252) are symmetrically and elastically sliding on one side, far away from the center of the alignment disc (25), of the active plate (231).

Through supporting component (22) cooperation on two parts of punching (2) to lock the position of return bend flange, afterwards install on drill bit seat (24) according to the required corresponding quantity of selection and diameter of punching drill bit (241), later remove clamping frame (232) and clamping frame (233) two clamp in return bend flange's ring flange both sides, slide alignment piece (23) cooperation rotation alignment dish (25) drive drill bit (241) and remove to the trompil position, simultaneously rotate drill bit (241) and remove alignment dish (25) and process the bolt hole simultaneously to two ring flanges of return bend flange.

2. The automatic plastic pipe perforating machine according to claim 1, wherein the supporting assembly (22) comprises a supporting frame (221) fixedly installed at one end, close to each other, of the fixed shaft (21), supporting rubber plates (222) sliding along the radial direction of the supporting frame are arranged inside the supporting frame (221) at equal intervals along the circumferential direction of the supporting frame, track discs (223) are rotatably arranged on the fixed shaft (21) and located on one sides, far away from each other, of the supporting frame (221), vortex line grooves (224) expanding outwards are formed in the track discs (223) at equal intervals along the circumferential direction of the track discs, and the supporting rubber plates (222) are matched with the grooves of the vortex line grooves (224) through supporting rods.

3. An automatic perforating machine for plastic pipe fittings according to claim 2, characterized in that the fixed shaft (21) is provided with an actuating motor (226), the output shaft of the actuating motor (226) is provided with a driving gear (227), and the driving gear (227) is meshed with a driven gear (225) arranged on the track disc (223).

4. The automatic plastic pipe perforating machine according to claim 1, wherein a tooth clamping plate (235) is elastically and slidably arranged in the auxiliary plate (230) along the thickness direction of the auxiliary plate, inclined-plane teeth are arranged on the tooth clamping plate (235) at equal intervals along the length direction of the tooth clamping plate, a guide post 236 which penetrates through the driving plate 231 in a sliding manner is arranged on one side, close to the driving plate (231), of the first clamping frame (232), a position plate (237) is arranged on one end, close to the auxiliary plate (230), of the guide post (236), a locking block (238) is elastically and slidably arranged on the driving plate (231) at a position, close to the auxiliary plate (230), along the radial direction of the alignment plate (25), and an inclined plane is formed in the position, close to the center of the alignment plate (25), of the locking block (238).

5. The automatic plastic pipe perforating machine according to claim 1, wherein a threaded rod (239) is rotatably arranged on one side, far away from the driving plate (231), of the first clamping frame (232), and the threaded rod (239) is in threaded connection with the second clamping frame (233).

6. The automatic plastic pipe perforating machine according to claim 1, characterized in that a belt wheel (243) is coaxially installed on one side of the drill bit seat (24) close to the main support (1), a tightening roller (242) is symmetrically arranged on one side of the alignment block (23) far away from the center of the alignment block (25) and corresponds to the position of the belt wheel (243) in a rotating mode, tightening blocks (253) which elastically slide along the radial direction of the alignment block (25) are arranged on the outer side of the middle of the alignment block (25) at equal intervals along the circumferential direction of the middle, a tightening roller (254) is arranged on one side of the tightening block (253) close to the alignment block (23) in a rotating mode, a synchronous belt is wound on the outer side of the tightening roller (254) and the outer side of the belt wheel (243), a rotating motor (255) is installed on one side of any one of the tightening block (253) far away from the alignment block (23), and an output shaft of the rotating motor (255) is connected with the tightening roller (254) at the corresponding position.

7. An automatic plastic pipe perforating machine as claimed in claim 1, characterized in that a driven rack (111) is arranged on one side of the sliding plate (11) far away from the inside of the main bracket (1), a synchronizing gear (112) is rotatably arranged on the left side of the lower part of the main bracket (1), and the driven rack (111) is meshed with the synchronizing gear (112).

8. The automatic plastic pipe perforating machine according to claim 1, characterized in that a worm wheel (12) is coaxially arranged at a position, close to the main support (1), of the contraposition disc (25), a pushing plate (13) is slidably arranged inside the sliding plate (11), the pushing plate (13) is rotationally connected with the contraposition disc (25), a pushing cylinder (14) is arranged on one side, far away from the inside of the main support (1), of the sliding plate (11), a telescopic rod of the pushing cylinder (14) is connected with the pushing plate (13), a worm (15) is rotationally arranged at the rear part of the pushing plate (13), the worm (15) is meshed with the worm wheel (12), a transmission rod (151) is sleeved inside the worm (15), and one ends, close to each other, of the transmission rods (151) are mutually connected and transmitted through bevel gears.