CN212370958U - Clamping mechanism of automatic punching device for metal pipe fittings - Google Patents

Abstract

The utility model relates to an automatic punching device's of tubular metal resonator presss from both sides dress mechanism, including workstation and two positioning seats that the preceding back direction interval of following the workstation set up, be equipped with the constant head tank that supplies tubular metal resonator's both ends correspondence slip wherein also can follow to deviate from on two relative walls between two positioning seats respectively, still be equipped with in two positioning seats on at least one can act on the corresponding tip of tubular metal resonator and with the elastic mechanism of tubular metal resonator centre gripping between two positioning seats. Under the feed mechanism propelling movement that corresponds, the constant head tank of two positioning seats can be settled at metal pipe's both ends to carry out self-holding at metal pipe's both ends through corresponding the elastic mechanism who sets up on the positioning seat, likewise, when the material returned, under the promotion of the unloading mechanism that corresponds, the tubular metal resonator can be followed and taken off in the constant head tank of two positioning seats, and this kind is pressed from both sides the unloading process that the dress mechanism had greatly made things convenient for metal pipe to punch a hole the processing, provides the machining efficiency that punches a hole.

Description

Clamping mechanism of automatic punching device for metal pipe fittings

Technical Field

The utility model relates to a metal pipe fitting processing technology field that punches a hole especially relates to an automatic punching device's of metal pipe fitting presss from both sides dress mechanism.

Background

Punching is a common processing technique in industrial production. For the hole processing on the pipe wall, the hole is made by adopting a stamping method, the quality requirement of the hole can be met, the processing efficiency is high, and the method is more suitable for batch production. The existing pipe fitting punching die is mainly divided into a core die and a coreless die.

For example, chinese patent application No. CN201410020329.4 (publication No. CN104759523A) discloses a process equipment for processing a wall hole of a metal tube, which comprises a punching mechanism, a waste discharging mechanism and a clamping mechanism for the metal tube; the punching mechanism consists of a pressure cylinder, a punching needle driven by the pressure cylinder and a mandrel; the punching needle faces the pipe wall of the metal pipe, the position of the punching needle is arranged according to the position of a hole in the wall of the metal pipe, the core rod is sleeved in the metal pipe, the diameter of the core rod is in clearance fit with the inner bore diameter of the metal pipe, the specific matching grade is determined by the requirement of a specific processing object, the punching hole sleeved with the punching needle is arranged on the surface of the core rod facing the punching needle, and the tail end of the punching hole is also provided with a waste pushing hole penetrating through the core rod; the waste discharging mechanism consists of a waste pushing pressure cylinder and a waste pushing needle driven by the waste pushing pressure cylinder, and the waste pushing needle is sleeved in a waste pushing hole of the mandrel; the clamping mechanism is used for tightly clamping and conveying the metal pipe to a set position of the punched hole to be sleeved with the core rod, and after the punching is finished, the metal pipe is withdrawn from the core rod and released; the pressure cylinder drives the punching end of the punching needle to abut against the wall of the metal pipe to punch a set metal pipe wall hole, waste materials after the metal pipe wall hole is punched are pressed into the punched hole of the core rod by the punching needle, the punching needle is pulled out of the metal pipe wall hole by the pressure cylinder, at the moment, the clamping mechanism pulls the metal pipe to be separated from the core rod, then the metal pipe is released, and the next metal pipe to be processed is clamped continuously; and the waste material pushing pressure cylinder drives the waste material pushing needle to push the waste material in the punch hole of the core rod along the waste material pushing hole of the core rod and push out and punch the waste material, the waste material pushing pressure cylinder pulls the waste material pushing needle back into the waste material pushing hole, and the punching process of the metal pipe wall hole is completed when the metal pipe wall hole is punched, and the continuous processing is circularly performed.

However, the existing metal pipe punching device mostly adopts manual feeding, that is, the metal pipe is manually placed on a clamping mechanism of the metal pipe, so that the clamping mechanism clamps the metal pipe, then the clamping mechanism drives the metal pipe to be transferred to a set position of punching to be sleeved with a core rod, after the punching is completed, the clamping mechanism pulls the metal pipe to be separated from the core rod, the metal pipe is released, and the processed metal pipe is manually taken down. The clamping mechanism of the existing metal pipe punching device is not suitable for automatic feeding and discharging of metal pipes, so that the machining efficiency is low.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that to prior art's current situation, a make things convenient for metal pipe fitting to carry out the automatic unloading of going up and then improve machining efficiency's automatic punching device's of metal pipe fitting double-layered dress mechanism is provided.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: the utility model provides an automatic punching device's of tubular metal resonator presss from both sides dress mechanism, includes the workstation and follows two positioning seats that the preceding back direction interval of workstation set up, is equipped with the constant head tank that supplies the both ends correspondence slip-in of tubular metal resonator also can follow to deviate from respectively on two relative walls between two positioning seats, still is equipped with the elastic mechanism that can act on the corresponding tip of tubular metal resonator and with the tubular metal resonator centre gripping between two positioning seats in at least one in two positioning seats.

In order to enable the two ends of the metal pipe fitting to be stably clamped on the two positioning seats of the clamping mechanism, the positioning grooves of the two positioning seats are located at the same height and are strip-shaped sliding grooves extending in the horizontal direction, and the two strip-shaped sliding grooves are opened towards the left side.

As an improvement, the elastic mechanism includes:

the movable block can be movably arranged on the corresponding positioning seat back and forth, and the side wall of the movable block is provided with a guide groove for the corresponding end part of the metal pipe fitting to slide in, and the guide groove forms a positioning groove of the positioning seat;

the elastic piece acts on the movable block, so that the movable block always has the trend of being far away from the corresponding positioning seat along the front-back direction of the workbench, and the movable block abuts against the corresponding end part of the metal pipe fitting.

When carrying out pressing from both sides of metal pipe fitting dress, the guide way of movable block can be gone into to the corresponding tip of metal pipe fitting, and at this moment, under the effect of elastic component, the movable block is automatic to be supported at the tip of metal pipe fitting, and compresses tightly metal pipe fitting on another positioning seat along the axial.

In order to enable the end part of the metal pipe fitting to smoothly slide into the guide groove, the guide groove of the movable block comprises an inlet part and an accommodating part, the bottom surface of the inlet part of the guide groove is used for guiding the metal pipe fitting to enter a guide arc surface/guide inclined surface in the accommodating part, the elastic mechanism is in a free state, a first axial distance between the inlet part of the guide groove and another positioning groove is greater than the length of the metal pipe fitting, and a second axial distance between the accommodating part of the movable block and the other positioning groove is smaller than the length of the metal pipe fitting.

In order to enable the movable block to move back and forth stably relative to the positioning seat under the action of the elastic piece, a guide post extending along the front-back direction is arranged on the side wall of the movable block, which deviates from the guide groove, the positioning seat is provided with a second through hole extending along the front-back direction at the bottom wall of the positioning groove and used for the guide post of the movable block to pass through, the second through hole is a stepped hole with a large front part and a small rear part, the end part of the guide post of the movable block is connected with a limit nut, and the elastic piece is sleeved on the guide post of the movable block by taking a pressure spring as a main body and is abutted between the movable block and the step of the stepped hole of the.

The metal pipe fitting clamping mechanism comprises a clamping mechanism, a workbench and two positioning seats, wherein the clamping mechanism is used for clamping a metal pipe fitting, the workbench is provided with a clamping mechanism, the clamping mechanism is used for clamping the metal pipe fitting, the workbench is provided with a clamping mechanism, the clamping mechanism is provided with a clamping mechanism.

As an improvement, the tip of drive shaft is equipped with the sliding seat, be equipped with the slide rail that extends the setting around on the workstation, the sliding seat slides and locates the slide rail on, extend the setting around being equipped with on the sliding seat and go up connecting rod and lower connecting rod that the upper and lower direction layering was arranged, two positioning seats are equallyd divide and are fixed respectively on last connecting rod and the lower connecting rod, the metal pipe fitting correspondence of centre gripping between the constant head tank of two positioning seats is located the clearance neutral that forms between last connecting rod and the lower connecting rod. The gap between the upper connecting rod and the lower connecting rod is free, so that the metal pipe fitting feeding and discharging operation is facilitated, the feeding mechanism and the discharging mechanism can be arranged on two sides of the connecting rods, and the feeding mechanism and the discharging mechanism can respectively push or push the metal pipe fitting from two sides when the metal pipe fitting is fed (clamped between the two positioning seats) or discharged (pushed down from between the two positioning seats).

As an improvement, the material pushing driving piece is an air cylinder, an oil cylinder or a motor. Wherein, the pushing driving member is preferably a cylinder.

As an improvement, the two positioning seats are respectively a first positioning seat and a second positioning seat, the first positioning seat is located in front of the workbench, the second positioning seat is located behind the workbench and is closer to the material pushing driving part relative to the first positioning seat for arrangement, and one elastic mechanism is correspondingly arranged on the second positioning seat.

In order to enable the metal pipe clamped between the two positioning seats of the clamping mechanism to be correspondingly sleeved on the core rod of the machining area of the workbench, the first positioning seat is further provided with a first through hole which is through from front to back and is coaxially arranged with the metal pipe clamped between the first positioning seat and the second positioning seat, so that the core rod correspondingly cantilevered and arranged in the machining area of the workbench can penetrate through the first through hole and extend into the corresponding metal pipe.

Compared with the prior art, the utility model has the advantages that: the utility model provides an automatic punching device's of tubular metal resonator presss from both sides two positioning seat intervals of dress mechanism set up, and be equipped with the both ends correspondence that supplies the tubular metal resonator on two walls that the positioning seat is relative respectively and slide into constant head tank wherein, under the feed mechanism propelling movement that corresponds, the constant head tank of two positioning seats can be settled at the both ends of tubular metal resonator, and carry out self-holding at the both ends of tubular metal resonator through the elastic mechanism that corresponds the setting on the positioning seat, and the same way, when the material returned, under the promotion of corresponding unloading mechanism, the tubular metal resonator can be followed and is come out in the constant head tank of two positioning seats, this kind is pressed from both sides and is adorned the unloading process that the mechanism has greatly made things convenient for the tubular metal resonator to punch a hole processing, the.

Drawings

Fig. 1 is a schematic perspective view of an automatic punching device for metal pipes, which employs a clamping mechanism according to an embodiment of the present invention;

fig. 2 is a schematic perspective view of another angle of the automatic punching device for metal pipes using a clamping mechanism according to the embodiment of the present invention;

fig. 3 is a top view of an automatic punching device for metal pipes, in which a clamping mechanism is applied (in which some parts of a feeding mechanism are not shown), according to an embodiment of the present invention;

fig. 4 is a schematic perspective view of a clamping mechanism according to an embodiment of the present invention;

FIG. 5 is a schematic view of the back side angle configuration of FIG. 4;

fig. 6 is a left side view of the clamping mechanism according to the embodiment of the present invention;

fig. 7 is a schematic perspective view of a clamping mechanism according to an embodiment of the present invention (without clamping a metal pipe);

FIG. 8 is a partially exploded view of FIG. 7;

fig. 9 is a horizontal cross-sectional view of the clamping mechanism (with a metal tube clamped) according to an embodiment of the present invention;

fig. 10 is a structural diagram of the state of the metal pipe fitting unclamping mechanism in fig. 9 (the elastic mechanism is in a free state);

fig. 11 is a partial view of a clamping mechanism according to an embodiment of the present invention;

fig. 12 is a schematic perspective view of the first through hole of the first positioning seat of the clamping mechanism according to the embodiment of the present invention being sleeved on the free end of the mandrel;

fig. 13 is a schematic perspective view of a fixed mold of a stamping mechanism according to an embodiment of the present invention;

fig. 14 is a front side view of the stationary mold of the punching mechanism according to the embodiment of the present invention;

FIG. 15 is a cross-sectional view taken at A-A of FIG. 14;

fig. 16 is a schematic perspective view of a movable mold of a punching mechanism according to an embodiment of the present invention.

Reference numerals: 10. a work table; 100. a metal pipe fitting; 11. a first slide rail; 101. a processing zone; 102. a feeding and discharging area; 103. a first blanking port; 104. a second blanking port; 12. a support plate; 13. a slide bar; 14. a suspension; 15. a second slide rail; 16. a second sliding seat; 17. a striker plate; 21. a first positioning seat; 210. a first through hole; 211. a first positioning groove; 22. a second positioning seat; 220. a second through hole; 221. a second positioning groove; 222. mounting grooves; 23. a material pushing driving member; 231. a driving member body; 232. a drive shaft; 24. a first sliding seat; 25. an upper connecting rod; 26. a lower connecting rod; 27. a supporting seat; 270. a first guide hole; 30. an elastic mechanism; 301. an inlet portion; 302. an accommodating portion; 31. a movable block; 32. an elastic member; 310. a guide slope; 311. a guide post; 33. a limit nut; 400. a stamping mechanism; 401. an avoidance groove; 40. a stamping die; 41. fixing a mold; 410. a first half-tank; 411. a third through hole; 42. moving the mold; 420. a second half-tank; 421. punching a needle; 43. stamping a driving piece; 44. a core rod; 440. punching; 441. a waste push aperture; 442. a guiding conical surface; 500. a waste discharge mechanism; 50. a waste push drive; 51. a third sliding seat; 511. a second guide hole; 510. a waste pushing needle; 52. a waste material slip frame; 60. a feeding mechanism; 61. a workpiece lifting assembly; 62. a feeding frame; 63. lifting the driving piece; 64. a workpiece carrier; 640. a scaffold structure; 65. a feeding clamping jaw; 66. a feeding driving member; 70. a blanking mechanism; 71. a blanking driving part; 72. a material pushing block; 73. a blanking frame; 74. a third slide rail; A. a gap is free; d. the length of the metal tube; l1, first axial distance; l2, second axial distance.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

Referring to fig. 1 to 16, an automatic punching apparatus for metal pipe wall holes generally comprises a worktable 10, a loading and unloading mechanism, a clamping mechanism, a punching mechanism 400, a waste discharging mechanism 500 and a control system.

Referring to fig. 3, the table 10 may be a support platform. The top surface of the table 10 is divided into a processing area 101 for processing the metal pipe 100 and a loading and unloading area 102 (indicated generally by a dashed circle in fig. 3). The processing area 101 is disposed in a front area of the workbench 10, and the feeding and discharging area 102 is disposed in a rear area of the workbench 10, specifically, the stamping mechanism 400 and the waste discharging mechanism 500 of the automatic metal pipe punching device are disposed in the processing area 101 of the workbench 10, and the feeding and discharging mechanism is disposed in the feeding and discharging area 102 of the workbench 10.

With continued reference to fig. 3, the punch mechanism 400 includes the punch die 40 and the punch driver 43. The press die 40 is used for clamping the metal pipe 100 which is sent to the processing area 101 by the clamping mechanism, wherein the axial direction of the metal pipe 100 fixed on the clamping mechanism is consistent with the front and back direction of the workbench 10. The press mold 40 specifically includes a fixed mold 41 and a movable mold 42 sequentially disposed in the left-right direction of the table 10, wherein the fixed mold 41 is fixed to the table 10, and the movable mold 42 is connected to an action end of a press driving member 43 to be movable toward or away from the fixed mold 41. The ram drive 43 in this embodiment may alternatively be a cylinder.

Referring to fig. 13 to 16, after the movable mold 42 of the stamping mold 40 is attached to the fixed mold 41, a cylindrical groove adapted to the outer diameter of the metal pipe 100 is formed, and specifically, the cylindrical groove is formed by correspondingly engaging a first half groove 410 provided on the wall surface of the fixed mold 41 with a second half groove 420 provided on the movable mold 42. The front part of the fixed die 41 is further provided with a mandrel 44 which extends backwards and is in an overhanging state, wherein the overhanging state of the mandrel 44 means that the front end of the mandrel 44 is fixed on the fixed die 41, and the rear end of the mandrel 44 extends into the first half groove 410 of the fixed die 41 to be suspended, specifically, a gap is formed between the outer wall of the mandrel 44 and the inner wall of the first half groove 410, and the size of the gap is matched with the wall thickness of the metal pipe fitting 100. When the metal pipe 100 moves forward to the machining zone 101 along with the gripper assembly, the metal pipe 100 can extend into the first half-groove 410 of the fixed die 41 and be sleeved outside the mandrel 44. In this embodiment, the length of the mandrel 44 is substantially the same as the length of the metal pipe 100 to be machined.

Referring to fig. 16, a punch pin 421 extending toward the core rod 44 of the fixed mold 41 is disposed on an inner wall of the second half groove 420 of the movable mold 42, and correspondingly, a punched hole 440 for receiving the punch pin 421 is disposed on a surface of the core rod 44 facing the punch pin 421. More specifically, the end of the punched hole 440 of the mandrel 44 is further provided with a scrap pushing hole 441 transversely penetrating through the mandrel 44, that is, the punched hole 440 of the mandrel 44 and the scrap pushing hole 441 in this embodiment are connected to form a stepped hole structure, wherein the structures of the punched hole 440 of the mandrel 44 and the scrap pushing hole 441 are the prior art, and specifically, refer to "a process equipment for machining a metal pipe wall hole with a core die" disclosed in chinese patent application No. CN201410020329.4 (publication No. CN 104759523A).

Referring to fig. 3, the waste discharge mechanism 500 is located on the left side of the fixed mold 41. The scrap discharge mechanism 500 includes a scrap pushing/driving member 50 and a third sliding seat 51 connected to an action end of the scrap pushing/driving member 50, the third sliding seat 51 has a scrap pushing pin 510 on a wall facing the fixed mold 41, and correspondingly, the fixed mold 41 has a left-right through hole 411, the scrap pushing pin 510 can be inserted into the scrap pushing hole 441 of the mandrel 44 through the third through hole 411 of the fixed mold 41, and further reversely push out the scrap remaining in the punched hole 440 of the mandrel 44 during the punching process, wherein the scrap pushing pin 510 in the present embodiment may be inserted into the third through hole all the time during the pushing process, or may be separated from the third through hole 411 when being far away from the fixed mold. The processing area 101 of the table 10 is also provided with a scrap collecting device for collecting the scrap pushed out by the scrap pushing pins 510.

Referring to fig. 6, the waste collection device includes a waste slide rack 52, wherein the waste slide rack 52 is disposed inclined from top to bottom. The feeding hole at the upper end of the waste slide frame 52 is engaged with the bottom of the processing area 101 of the workbench 10, wherein the workbench 10 is provided with a second blanking hole 104, the feeding hole of the waste slide frame 52 is engaged with the second blanking hole 104 of the workbench 10, specifically, the second blanking hole 104 is correspondingly located below the core rod 44 of the fixed mold 41, so that the waste material pushed out by the waste pushing needle 510 falls down from the second blanking hole 104 of the workbench 10 and enters the waste slide frame 52, and more specifically, the discharging hole at the lower end of the waste slide frame 52 correspondingly extends forward to the outside of the workbench 10, and a waste material collecting frame (not shown) can be placed at the discharging hole of the waste slide frame 52 to receive the waste material which automatically slides down.

Referring to fig. 3, the table 10 is provided with two support plates 12 arranged upright in the processing zone 101. The two support plates 12 are disposed at intervals in the left-right direction of the table 10. Two backup pads 12 all are the square, and two square boards extend in the fore-and-aft direction of workstation 10, are connected with four slide bars 13 between two square boards, and wherein, four slide bars 13 set up in four angular positions of square board. The scrap pushing and driving member 50 may be an oil cylinder disposed on the wall of the left support plate 12, and the third sliding seat 51 is provided with second guide holes 511 through which the four sliding rods 13 pass, respectively, so as to be slidably disposed on the four sliding rods 13 through the four second guide holes 511 in a left-right direction and driven by the oil cylinder. Similarly, the press actuator 43 may be an oil cylinder and fixed to the support plate 12 on the right side, and the movable die 42 of the press die 40 is provided with second guide holes 511 through which the four slide bars 13 are inserted, respectively, so that the four slide bars 13 are slidably provided on the four slide bars 13 through the four second guide holes 511, and driven by the press actuator 43.

The invention mainly aims to improve a clamping mechanism of an automatic punching device for a metal pipe wall hole.

Referring to fig. 3 and 4, the clamping mechanism includes a clamping seat assembly and a pusher actuator 23. Specifically, the table 10 of the present embodiment is provided with two supporting seats 27, the two supporting seats 27 are arranged at intervals in the front-back direction of the table 10, specifically, the supporting seat 27 located at the rear side corresponds to the loading and unloading area 102 located on the table 10, and the supporting seat 27 located at the front side corresponds to the processing area 101 located on the table 10, specifically, the front side position of the stamping die 40 (the fixed die 41). In this embodiment, the pushing driving member 23 of the clamping mechanism may be an air cylinder (of course, an oil cylinder, a motor, and other prior arts may also be used). The pushing drive member 23 is fixed to a support base 27 located at the rear side of the table 10. The pushing driving member 23 includes a driving member main body 231 (cylinder body) and a driving shaft 232 which can extend back and forth relative to the driving member main body 231, and the clamping seat assemblies (two positioning seats) are both disposed on the driving shaft 232 of the driving member and reciprocate back and forth along with the driving shaft 232.

Referring to fig. 4, a first sliding seat 24 is disposed at an end of the driving shaft 232 of the pushing driving member 23, a first sliding rail 11 extending forward and backward is disposed on the working table 10, and the first sliding seat 24 is slidably disposed on the first sliding rail 11. The first sliding seat 24 is provided with an upper connecting rod 25 and a lower connecting rod 26 which extend forwards and are arranged in layers in the up-down direction, specifically, the upper connecting rod 25 and the lower connecting rod 26 are both horizontally arranged, wherein a first guide hole 270 which is through from front to back and is used for the upper connecting rod 25 and the lower connecting rod 26 to pass through is arranged on the supporting seat 27 which is positioned at the front side of the workbench 10, so that the front-back reciprocating movement of the upper connecting rod 25 and the lower connecting rod 26 is more stable under the driving of the pushing driving piece 23.

Referring to fig. 13 and 16, the two opposite walls of the fixed mold 41 and the movable mold 42 of the press mold 40 are further provided with escape grooves 401 through which the upper connecting rods 25 and the lower connecting rods 26 pass, respectively.

Referring to fig. 4 and 5, the clamping seat assembly of the clamping mechanism includes two positioning seats, which are a first positioning seat 21 and a second positioning seat 22 disposed at an interval in the front-back direction of the worktable 10, wherein the first positioning seat 21 is close to the processing area 101 of the worktable 10 relative to the second positioning seat 22. Specifically, both positioning seats are fixed on the upper connecting rod 25 and the lower connecting rod 26. More specifically, the first positioning seat 21 is provided with a first positioning groove 211, into which the first end of the metal pipe 100 slides and can be correspondingly separated, the first positioning groove 211 in this embodiment is a horizontal sliding groove extending in the front-rear direction and closed at the front end, and a notch of the horizontal sliding groove faces to the left. Similarly, the second positioning seat is provided with a second positioning groove for the second end of the metal pipe fitting 100 to slide into, and to correspondingly drop out of, the second positioning groove is arranged in the same direction as the first positioning groove and at the same height position, that is, the second positioning groove is also a horizontal sliding groove extending in the front-rear direction and closed at the rear end, and the notch of the horizontal sliding groove faces to the left side.

Referring to fig. 4, in the present embodiment, the height positions of the first positioning groove 211 on the first positioning seat 21 and the second positioning groove 221 of the second positioning seat 22 are located between the upper connecting rod 25 and the lower connecting rod 26, so that the metal pipe 100 clamped between the positioning grooves of the two positioning seats is also located in the gap space a between the upper connecting rod 25 and the lower connecting rod 26, which greatly facilitates the loading and unloading operations of the metal pipe 100, wherein the loading mechanism 60 and the unloading mechanism 70 can be disposed on both sides of the connecting rod, and the loading mechanism 60 and the unloading mechanism 70 can respectively push or push the metal pipe 100 from both sides when the loading action (clamping the metal pipe 100 between the two positioning seats) or the unloading action (pushing the metal pipe 100 down from between the two positioning seats) of the metal pipe 100 is performed.

Referring to fig. 8 and 9, in order to enable the metal pipe 100 to be processed to be automatically clamped while being placed in the corresponding strip-shaped sliding groove of the clamping seat assembly, so as to ensure the fixing reliability of the metal pipe 100, a mounting groove 222 is formed on a side wall of the second positioning seat 22 facing the first positioning seat 21, and an elastic mechanism 30 is disposed in the mounting groove 222 and can act on a corresponding end (rear end) of the metal pipe 100 to clamp the metal pipe 100 in the first positioning groove 211 of the first positioning seat 21 along the axial direction of the metal pipe 100. In order to facilitate the assembly of the elastic mechanism 30 and the avoidance of the metal pipe 100 pushed to the left, the mounting groove 222 of the second positioning seat 22 is a semi-closed notch groove.

With reference to fig. 8 and 9, the elastic mechanism 30 of the present embodiment includes a movable block 31 and an elastic member 32, wherein the movable block 31 is movably disposed in the mounting groove 222 of the second positioning seat 22 in a front-back direction relative to the second positioning seat 22. The front side wall of the movable block 31 has a guide groove for the corresponding end of the metal pipe 100 to slide into, wherein the guide groove of the movable block 31 constitutes the second positioning groove 221 of the second positioning seat 22, i.e. the guide groove is also a strip-shaped sliding groove with an opening on the left side and a closed on the right side. On the other hand, the guide groove of the movable block 31 in this embodiment includes an entrance portion 301 and an accommodating portion 302, in order to make the end of the metal pipe 100 slide into the guide groove smoothly, the bottom surface of the entrance portion 301 of the guide groove is a guide inclined surface (or a guide arc surface) 310 for guiding the metal pipe 100 into the accommodating portion 302, in a free state of the elastic mechanism, a first axial distance L1 between the entrance portion 301 of the guide groove and another positioning groove is greater than a length d of the metal pipe, and a second axial distance L2 between the accommodating portion of the movable block and another positioning groove is smaller than the length d of the metal pipe, so that when the metal pipe is pushed in, automatic clamping can be achieved, as shown in fig. 9 and fig. 10 in detail.

With reference to fig. 8 and 9, the shape and size of the movable block 31 of the elastic mechanism 30 are matched with the mounting groove 222 of the second positioning seat 22, so as to ensure the stability of the movable block 31 moving forward and backward. In order to enable the movable block 31 to move forward and backward smoothly relative to the positioning seat under the action of the elastic element 32, a backward extending guide post 311 is arranged on the side wall of the movable block 31 away from the guide groove, the second positioning seat 22 is provided with a second through hole 220 extending in the forward and backward direction at the bottom wall of the mounting groove 222 for the guide post 311 of the movable block 31 to pass through, and the end of the guide post 311 of the movable block 31 is connected with a limit nut 33.

Referring to fig. 8 and 9, the elastic member 32 of this embodiment may be a compression spring, wherein the compression spring is sleeved on the guide post 311 of the movable block 31 and extends into the second through hole 220 of the second positioning seat 22, specifically, the second through hole 220 of the second positioning seat 22 is a stepped hole with a larger front portion and a smaller rear portion, a front end of the compression spring abuts against a rear side wall of the movable block 31, and a rear end of the compression spring abuts against a step of the stepped hole of the second positioning seat 22, so that the movable block 31 always has a tendency to be away from the second positioning seat 22 in the front-rear direction of the workbench 10, so as to ensure that the movable block 31 can firmly abut against the corresponding end position of the metal pipe 100.

Referring to fig. 4 and 7, in order to allow the metal pipe 100 to be processed, which is clamped between the two positioning seats, to be correspondingly fitted over the mandrel bar 44 when the metal pipe 100 to be processed is transferred to the processing area 101 of the table 10, the first positioning seat 21 is provided with a first through hole 210 that penetrates forward and backward, and the first positioning groove 211 of the first positioning seat 21 is engaged with the first through hole 210. The first through hole 210 is provided coaxially with the metal pipe 100 held between the first positioning base 21 and the second positioning base 22, so that the mandrel bar 44 correspondingly cantilevered in the machining zone 101 of the table 10 is inserted into the corresponding metal pipe 100 through the first through hole 210. In order to stably and firmly hold the metal pipe 100 placed in the corresponding strip-shaped sliding groove of the clamping seat assembly at the set position, the width of the first positioning groove 211 of the first positioning seat 21 and the second positioning groove 221 of the second positioning seat 22 (and the guide groove of the movable block 31) are both adapted to the outer diameter of the metal pipe 100, wherein the width of the corresponding positioning groove just allows the end of the metal pipe 100 to be clamped, and no large floating or offset occurs in the vertical direction after the clamping. On the other hand, the first through hole 210 of the first positioning seat 21 is a cylindrical hole, the inner diameter of the first through hole 210 is smaller than the outer diameter of the metal pipe 100, and can be selected appropriately according to the wall thickness of the metal pipe 100, as long as the end of the metal pipe 100 is firmly abutted against the bottom wall of the first positioning groove 211, and the mandrel 44 can be ensured to pass through smoothly.

In this embodiment, after the hole of the metal pipe 100 is machined, the mandrel 44 needs to be withdrawn relative to the mandrel 44 by the scrap pushing actuator 50 to drive the scrap pushing needle 510 to push the scrap in the punched hole 440 of the mandrel 44 along the scrap pushing hole 441 of the mandrel 44 and push the scrap out of the punched hole 440, but after a certain period of use, the mandrel 44 is inevitably bent by the impact of the scrap pushing needle 510, and the punched hole 440 and the scrap pushing hole 441 of the mandrel 44 are shifted, thereby affecting the precision of the punched hole 440 of the metal pipe 100, in order to solve this problem, the machined metal pipe 100 can be moved back relative to the mandrel 44 to expose the scrap pushing hole of the mandrel, and then the scrap discharge mechanism 500 performs the scrap discharge operation, at this time, the first through hole 210 provided on the first positioning seat 21 can be sleeved on the free end portion of the mandrel 44, and defines the free end of the mandrel 44. In this way, in the process of ejecting the scrap remaining on the core mold by the scrap pushing pin 510 of the scrap discharge mechanism 500, since both ends of the core rod 44 are restricted, the core rod 44 is not easily bent, thereby ensuring the precision of the punching process of the metal pipe 100. In order to further secure the definition of the self-end of the mandrel 44, the inner diameter of the first through-going bore 210 of the first positioning seat 21 is adapted to the outer diameter of said mandrel 44 at least at the front end-port location. Specifically, there may be a slight gap between the front end opening of the first through hole 210 of the first positioning seat 21 and the outer wall of the mandrel 44, but it is sufficient to ensure that the free end of the mandrel 44 is fixed when the mandrel 44 is impacted by the scrap pushing pin 510, as shown in detail in fig. 12.

More specifically, in the process of reciprocating the clamping seat assembly back and forth, in this embodiment, the first through hole 210 of the first positioning seat 21 may be always sleeved on the mandrel 44, that is, in the process of reciprocating the first positioning seat 21 back and forth along with the driving shaft 232 of the pushing driving member 23, the first through hole 210 of the first positioning seat 21 is not always separated from the mandrel 44, wherein when the first positioning seat 21 moves back to the loading and unloading area 102 of the worktable 10 for loading and unloading, the first through hole 210 of the first positioning seat 21 is sleeved on the free end position of the mandrel 44, and at this time, the free end position of the mandrel 44 does not expose the rear port of the first through hole 210 of the first positioning seat 21, so as to ensure that the end of the metal pipe 100 to be processed can smoothly slide into the first positioning groove 211 when loading.

Of course, it is also possible that the first through hole 210 of the first positioning seat 21 is not always sleeved on the core rod 44 during the process of the back-and-forth reciprocating movement of the clamping seat assembly, that is, the first positioning seat 21 can sequentially stay at three positions during the back-and-forth reciprocating sliding of the first sliding seat 24 driven by the pushing material driving element 23 under the control of the control system. When the first positioning seat 21 stays at the first position, the first positioning seat 21 is located in the feeding and discharging area 102, and the feeding and discharging operation of the metal pipe 100 is performed, and at this time, the first through hole 210 of the first positioning seat 21 is already pulled out of the free end portion of the mandrel 44; when the first positioning seat 21 stays at the second position, the first positioning seat 21 is located in the machining area 101 of the worktable 10, and the metal pipe 100 is punched 440, and at this time, the metal pipe 100 on the clamping seat assembly is sleeved on the mandrel 44, and of course, the first through hole 210 of the first positioning seat 21 is also sleeved on the mandrel 44, and specifically located at the root (i.e. the front end) of the mandrel 44; when the first positioning seat 21 stays at the third position, the first positioning seat 21 is positioned between the loading and unloading zone 102 and the machining zone 101, and the ejection operation of the scrap is performed, and at this time, the first through hole 210 of the first positioning seat 21 is sleeved on the free end portion of the mandrel 44 to limit the free end portion of the mandrel 44. After the ejection operation of the scrap is completed, the pushing driving member 23 drives the first positioning seat 21 to continue to slide backward to the first position for loading and unloading, and during the backward movement, the first through hole 210 of the first positioning seat 21 will be disengaged from the free end of the core rod 44.

Referring to fig. 14 and 15, since the first through hole 210 of the first retainer 21 is not always fitted over the mandrel 44, in order to smoothly enter the mandrel 44 into the first through hole 210 of the first retainer 21 when the clamping seat assembly moves toward the mandrel 44, the free end portion of the mandrel 44 is gradually reduced so as to guide the free end portion of the mandrel 44 to be inserted into the first through hole 210 of the first retainer 21, and specifically, the free end portion of the mandrel 44 has a guide tapered surface or a guide arc surface or a guide inclined surface 442 that is gradually reduced in size in the extending direction of the mandrel 44.

Referring to fig. 1 to 3, the loading and unloading mechanism includes a loading mechanism 60 and a unloading mechanism 70. The feeding mechanism 60 and the discharging mechanism 70 are disposed in the feeding and discharging area 102 of the worktable 10 and are respectively and correspondingly disposed on the left and right sides of the clamping mechanism. Specifically, the feeding mechanism 60 is disposed on the worktable 10 and located at the left side of the clamping mechanism, i.e. at the side corresponding to the opening of the strip-shaped chute facing the corresponding positioning seat, so as to convey and clamp the metal pipe fitting 100 to be processed between the first positioning seat 21 and the second positioning seat 22 of the clamping seat assembly. The blanking mechanism 70 is disposed on the worktable 10 and located at the right side of the clamping mechanism, that is, correspondingly disposed at one side of the worktable 10 away from the opening of the strip-shaped chute, so as to push down the processed metal pipe 100 from between the first positioning seat 21 and the second positioning seat 22 of the clamping seat assembly.

Referring to fig. 1 and 2, the feeding mechanism 60 includes a workpiece lifting assembly 61, a feeding jaw 65, and a feeding drive 66. A suspension 14 is arranged between the two supporting plates 12 on the working table 10, the bottom of the suspension 14 is provided with the feeding driving member 66 and a second slide rail 15 extending left and right, the second slide rail 15 is provided with a second slide seat 16, the second slide seat 16 is connected with the action end of the feeding driving member 66, and the feeding driving member 66 in this embodiment can be selected as an air cylinder. The first sliding seat 24 is provided with a feeding clamping jaw 65, and the feeding clamping jaw 65 can be automatically opened and closed under the control of the control system, so that the metal pipe fitting 100 can be clamped and released. Wherein, the feeding clamping jaw 65 can adopt the prior art of a servo clamping jaw, a clamping jaw driven by an air cylinder and the like.

Referring to fig. 1 and 2, the workpiece lifting assembly 61 includes a supply stand 62, a lift drive 63, and a workpiece holder 64. The supply frame 62 can be disposed on the sidewall of the working table 10, specifically, the supply frame 62 is a rectangular box structure, and the supply frame 62 is used for placing the metal pipe 100 to be processed, wherein the width of the supply frame 62 is substantially consistent with the length of the metal pipe 100. The supply frame 62 is disposed obliquely from left to right, that is, at least the bottom surface of the supply frame 62 is disposed obliquely, wherein the left side of the bottom surface of the supply frame 62 of the present embodiment is high and the right side is low. The lifting driving piece 63 and the workpiece bracket 64 are correspondingly arranged at the right low position of the feeding frame 62, wherein the workpiece bracket 64 is connected with the action end of the lifting driving piece and moves up and down in a reciprocating manner along with the action end of the lifting driving piece.

Referring to fig. 1 and 2, the workpiece bracket 64 includes two supporting structures 640 extending upward and spaced apart from each other, and the top ends of the two supporting structures 640 have circular grooves adapted to the metal pipe 100 and can receive one metal pipe 100. When the workpiece holder 64 is moved down to the lowered position, the arcuate slot in the top of the support structure 640 of the workpiece holder 64 is slightly below the bottom surface of the supply frame 62 or flush with the bottom surface of the supply frame 62 so that the metal tube 100 automatically rolls under its own weight into the arcuate slot in the top of the support structure 640 of the workpiece holder 64. When the workpiece bracket 64 drives the metal workpiece to be lifted to the high-position, the feeding clamping claw 65 can clamp the metal pendant on the workpiece bracket 64, and under the action of the feeding driving piece 66, the metal pendant moves towards the clamping seat assembly, so that the two end parts of the metal pipe 100 are clamped into the corresponding strip-shaped sliding grooves of the first positioning seat 21 and the second positioning seat 22, and then the feeding clamping claw 65 is reset to the initial position.

Referring to fig. 1-3, the blanking mechanism 70 includes a blanking driver 71 and a blanking frame 73. The blanking driving member 71 in this embodiment may be an air cylinder, an acting end of the air cylinder is connected with a material pushing block 72, and under a driving action of the air cylinder, the material pushing block 72 moves towards the clamping seat assembly, pushes out the metal pipe fitting 100 processed on the clamping seat assembly along the corresponding strip-shaped sliding groove, and then resets to an initial position. In order to ensure that the pushing block 72 can move smoothly in the left and right directions of the worktable 10, a third slide rail 74 extending left and right is provided on the worktable 10, and the pushing block 72 is slidably provided on the third slide rail 74.

Referring to fig. 5, the feeding frame 73 is disposed obliquely from top to bottom, specifically, a feeding hole at the upper end of the feeding frame 73 is connected to the bottom of the feeding and discharging area 102 of the worktable 10, and a discharging hole at the lower end of the feeding frame 73 correspondingly extends backwards to the outside of the worktable 10. The worktable 10 is further provided with a first blanking port 103, and the first blanking port 103 is located substantially below the clamping seat assembly and corresponds to a feeding port of the blanking frame 73 in the vertical direction. The left edge of the first blanking opening 103 is further provided with a striker plate 17 extending obliquely upward, so that the falling metal pipe 100 can accurately fall into the first blanking opening 103.

In this embodiment, the two positioning seats of the clamping mechanism of the automatic punching device for metal pipe fittings are arranged at intervals, and two walls opposite to the two positioning seats are respectively provided with positioning grooves for the two ends of the metal pipe fittings 100 to correspondingly slide into, under the pushing of the corresponding feeding mechanism 60, the two ends of the metal pipe fittings 100 can be arranged in the positioning grooves of the two positioning seats, and the two ends of the metal pipe fittings 100 are automatically clamped at the two ends of the metal pipe fittings 100 through the corresponding elastic mechanisms 30 arranged on the positioning seats, and similarly, when the metal pipe is returned, the metal pipe can be taken out from the positioning grooves of the two positioning seats under the pushing of the corresponding blanking mechanism 70, so that the clamping mechanism greatly facilitates the feeding and discharging processes of the punching processing of the metal pipe fittings 100, and the punching processing efficiency is improved.

Claims (10)

1. The utility model provides an automatic punching device's of metal pipe fitting presss from both sides dress mechanism which characterized in that: the metal pipe fitting positioning device comprises a workbench (10) and two positioning seats (21,22) arranged at intervals along the front and back direction of the workbench (10), two opposite walls between the two positioning seats (21,22) are respectively provided with positioning grooves (211,221) for the two ends of a metal pipe fitting (100) to correspondingly slide into and be separated from, and at least one of the two positioning seats is also provided with an elastic mechanism (30) capable of acting on the corresponding end of the metal pipe fitting (100) to clamp the metal pipe fitting (100) between the two positioning seats.

2. The clamping mechanism of the automatic punching device for the metal pipe fittings according to claim 1, characterized in that: the positioning grooves (211,221) of the two positioning seats are positioned at the same height position and are strip-shaped sliding grooves extending in the horizontal direction, and the two strip-shaped sliding grooves are opened towards the left side.

3. The clamping mechanism of the automatic punching device for metal pipes according to claim 1, characterized in that the elastic mechanism (30) comprises:

the movable blocks (31) can be movably arranged on the corresponding positioning seats back and forth, the side walls of the movable blocks (31) are provided with guide grooves for the corresponding end parts of the metal pipe fittings (100) to slide in, and the guide grooves form positioning grooves of the positioning seats;

and the elastic piece (32) acts on the movable block (31), so that the movable block (31) always has the tendency of being away from the corresponding positioning seat along the front-back direction of the workbench (10), and the movable block (31) is abutted against the corresponding end part of the metal pipe fitting (100).

4. The clamping mechanism of the automatic punching device for the metal pipe fittings according to claim 3, wherein: the guide way of activity piece (31) includes into portion (301) and accommodate portion (302), the bottom surface of the income portion (301) of guide way is for being used for guiding metal pipe fitting entering the guide cambered surface/the inclined plane of leading (310) in accommodate portion (302), elastic mechanism is under free state, the first axial distance (L1) between the income portion (301) of guide way and another constant head tank is greater than metal pipe fitting's length (d), the second axial distance (L2) between the accommodate portion (302) of activity piece (31) and another constant head tank is less than metal pipe fitting's length (d).

5. The clamping mechanism of the automatic punching device for the metal pipe fittings according to claim 3, wherein: the activity piece (31) is deviating from guide post (311) is extended in the front and back direction to have on the lateral wall of guide way, the positioning seat has second perforating hole (220) that guide post (311) that extend in the front and back direction in the diapire position of constant head tank and pass in order to supply activity piece (31), this second perforating hole (220) are preceding big little shoulder hole in back, the end connection of guide post (311) of activity piece (31) has stop nut (33), elastic component (32) use the pressure spring to establish as the main part cover on guide post (311) of activity piece (31) and support activity piece (31) with between the step of the shoulder hole of positioning seat.

6. The clamping mechanism of the automatic metal pipe punching device according to any one of claims 1 to 5, characterized in that: still including setting up the material pushing driving piece (23) on workstation (10), material pushing driving piece (23) are including driving piece body (231) and can push away flexible drive shaft (232) around material driving piece (23) body relatively, and two positioning seats are all located on drive shaft (232) of material pushing driving piece (23) and along with drive shaft (232) reciprocating motion around.

7. The clamping mechanism of the automatic punching device for the metal pipe fittings according to claim 6, wherein: the tip of drive shaft (232) is equipped with first sliding seat (24), extend first slide rail (11) that set up around being equipped with on workstation (10), first sliding seat (24) slide and locate first slide rail (11) on, extend around being equipped with on first sliding seat (24) and set up and last connecting rod (25) and lower connecting rod (26) that the layering of upper and lower direction was arranged, two positioning seats are equallyd divide and are fixed respectively on last connecting rod (25) and lower connecting rod (26), metal pipe spare (100) of centre gripping between the constant head tank of two positioning seats correspond and are located in clearance neutral (A) that forms between last connecting rod (25) and lower connecting rod (26).

8. The clamping mechanism of the automatic punching device for metal pipes according to claim 6, characterized in that: the material pushing driving piece (23) is a cylinder, an oil cylinder or a motor.

9. The clamping mechanism of the automatic punching device for the metal pipe fittings according to claim 6, wherein: the two positioning seats are respectively a first positioning seat (21) and a second positioning seat (22), the first positioning seat (21) is located in front of the workbench (10), the second positioning seat (22) is located behind the workbench (10) and is closer to the material pushing driving part (23) relative to the first positioning seat (21), and one elastic mechanism (30) is correspondingly arranged on the second positioning seat (22).

10. The clamping mechanism of the automatic punching device for metal pipes according to claim 9, characterized in that: the first positioning seat (21) is further provided with a first through hole (210) which penetrates through the first positioning seat (21) in the front-back direction and is coaxially arranged with the metal pipe fitting (100) clamped between the first positioning seat (21) and the second positioning seat (22), so that a core rod (44) correspondingly cantilevered in the machining area (101) of the workbench (10) penetrates through the first through hole (210) and extends into the corresponding metal pipe fitting (100).

Images