An automatic flanging apparatus and process

Abstract

The application relates to an automatic flanging device and process, and belongs to the technical field of air conditioner outdoor unit copper pipe processing, which comprises a rack provided with a tail seat, a sliding seat and a fixed seat, the tail seat and the fixed seat are fixedly connected with the rack, the sliding seat slides along the length direction of the rack, and the sliding frame is used for fixing the copper pipe; a module is arranged at the fixed seat position and used for clamping the copper pipe; a core rod is horizontally arranged and sequentially comprises a limiting rod one, one end of which is fixedly arranged on the side surface of the tail seat and the other end extends towards the fixed seat; a middle rod is arranged at the fixed seat position, one end of which is detachably connected with the end of the limiting rod one, an inlay block is arranged on the middle rod, the inlay block slides along the radial direction of the middle rod, a core head is slidably connected on the inlay block, and the core head slides along the axial direction of the middle rod; a push rod is slidably connected in the middle rod and slides along the axial direction of the middle rod to lift the inlay block towards the copper pipe, so that the inlay block abuts against the inner wall of the copper pipe. The application has the effect of improving the qualified rate of copper pipe punching and flanging.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of copper pipe processing for air conditioner outdoor units, and particularly to an automatic flanging device and process. BACKGROUND

[0002] Copper pipes are widely used as internal pipes of air conditioner outdoor units due to their good heat dissipation, so that the internal pipes of air conditioner outdoor units have good heat dissipation effect. The use of copper pipes to form appropriate pipes usually requires punching and flanging on the copper pipes, and then inserting the branch copper pipes at the punched position and welding them.

[0003] A punching and flanging machine is usually used for punching and flanging. The punching and flanging machine generally includes a horizontal frame, and a tail seat, a sliding seat and a fixed seat are sequentially arranged on the top of the frame along the length direction of the frame. A core rod is horizontally fixed on the side of the tail seat, one end of the core rod is arranged in the middle of the tail seat, and the other end extends towards the fixed seat. A core head is arranged on the core rod and arranged along the axial direction of the core rod and slides along the axial direction of the core rod to punch and flange the copper pipe. A three-jaw chuck is fixed on the side of the sliding seat, and the three-jaw chuck is used to horizontally clamp the copper pipe on the frame. The sliding seat horizontally slides along the length direction of the frame to drive the copper pipe to slide along the length direction of the frame. Two modules are slidably connected to the inner side of the fixed seat, and the modules relatively move to clamp the copper pipe. The opposite side of each module is provided with a groove, and the shape of the groove is matched with the copper pipe.

[0004] When the copper pipe is punched and flanged by using the punching and flanging machine, the copper pipe is first sleeved on the outside of the core rod, and one end of the copper pipe is fixed on the sliding seat through the three-jaw chuck. The sliding seat drives the copper pipe to horizontally slide on the frame, so that the copper pipe to be processed is moved to the position of the fixed seat, the two modules are relatively moved to clamp the copper pipe to be processed, the core head moves towards the copper pipe along the axial direction of the core rod, and the core head punches and flanges from the inside to the outside of the copper pipe. After completion, the sliding seat drives the copper pipe to horizontally slide, so that the next processing position is moved to the position of the fixed seat for punching and flanging.

[0005] According to the related technology in the above, the inventors believe that since the copper pipe is sleeved on the core rod for convenience, the inner diameter of the copper pipe and the outer diameter of the core rod are not completely the same, and there is a certain gap between the core rod and the copper pipe when the copper pipe is sleeved on the core rod. When punching, the clamping of the modules can fix the position of the copper pipe, but when the core head punches along the radial direction of the core rod, the core rod will have a small amplitude of shaking. When the core head moves along the radial direction of the core rod, the shaking of the core rod will interfere with the movement of the core head, causing the core head to move obliquely, resulting in the punching position deviating, the flanged hole being damaged, and the hole position having copper pieces, which reduces the precision of punching and flanging and reduces the qualification rate of the copper pipe punching and flanging process. SUMMARY

[0006] In order to improve the qualified rate of copper pipe punching and flanging, the application provides an automatic flanging device and process.

[0007] The automatic flanging device provided by the application adopts the following technical scheme:

[0008] An automatic flanging device comprises:

[0009] A rack is sequentially provided with a tail seat, a sliding seat and a fixed seat along the length direction of the rack, the tail seat and the fixed seat are fixedly connected with the rack, and the sliding seat slides along the length direction of the rack and is used for fixing the copper pipe;

[0010] A module is arranged at the position of the fixed seat and is used for clamping the copper pipe;

[0011] A core rod is horizontally arranged at the side of the tail seat and sequentially comprises:

[0012] A limiting rod one is fixedly arranged at one end of the side of the tail seat and extends to the direction close to the fixed seat at the other end;

[0013] An intermediate rod is arranged at the position of the fixed seat, one end of the intermediate rod is detachably connected with the end of the limiting rod one, an insert block is arranged on the intermediate rod, the insert block slides along the radial direction of the intermediate rod, a core head is slidably connected on the insert block, and the core head slides along the radial direction of the intermediate rod;

[0014] A push rod is slidably connected inside the intermediate rod and slides along the axial direction of the intermediate rod to push the insert block to the direction of the copper pipe, so that the insert block abuts against the inner wall of the copper pipe.

[0015] According to the above technical scheme, after the copper pipe is sleeved on the core rod and the end of the copper pipe is fixedly connected with the sliding seat, the push rod slides along the axial direction of the intermediate rod, and in this process, the insert block is pushed to the direction of the copper pipe, so that the insert block tightly abuts against the inner wall of the copper pipe.

[0016] According to the above technical scheme, the copper pipe is clamped by the module, so that the position of the copper pipe is fixed; the insert block is tightly abutted against the inner wall of the copper pipe by the push rod, so that the insert block is fixed at the position to be machined of the copper pipe, and the relative position of the two is fixed, thereby reducing the shaking of the insert block when the core head punches, and further reducing the influence on the punching movement of the core head, so as to improve the punching precision and the qualified rate of the copper pipe punching and flanging process.

[0017] In addition, the intermediate rod and the limiting rod one are detachably connected, so that different intermediate rods with different inner diameters can be replaced according to the inner diameter of the copper pipe, or the intermediate rod can be detached and replaced with different core heads according to the required punching diameter; the setting of the integral forming of the core rod in the traditional technology is changed, the core rod is divided into parts according to the functions, and when the punching and flanging conditions change, only the intermediate rod needs to be replaced, so as to save materials and increase the universality of the limiting rod one.

[0018] Optionally, the automatic flanging device further comprises:

[0019] The head mounting seat is arranged on the side of the fixed seat away from the sliding seat and horizontally slides along the length direction of the rack, and a head three-jaw chuck is rotationally connected to the side of the head mounting seat;

[0020] The limiting rod two is horizontally arranged, one end of which is mounted on the head mounting seat through the head three-jaw chuck, and the other end of which extends towards the fixed seat; the push rod is fixedly arranged on the end of the limiting rod two, and when the push rod is inserted into the middle rod, the end of the limiting rod two abuts against the end of the middle rod.

[0021] By adopting the above technical scheme, on the one hand, the push rod two is inserted into the middle rod under the driving of the head mounting seat, thereby providing power for the movement of the push rod; on the other hand, when the push rod is inserted into the middle rod, the end of the limiting rod two abuts against the end of the middle rod, so that the limiting rod one and the limiting rod two jointly abut against the middle rod from the two ends of the middle rod, thereby increasing the stability of the middle rod.

[0022] Optionally, a clearance hole is arranged at the position corresponding to the core head on the top of the module;

[0023] The fixed seat is fixedly provided with a mounting frame, and a mounting cylinder is vertically arranged on the mounting frame;

[0024] The mounting cylinder is open at both ends, and the center line of the mounting cylinder coincides with the center line of the clearance hole; an electromagnet is arranged on the inner wall of the mounting cylinder;

[0025] The mounting cylinder is connected with a discharge pipe at the open end of the top of the mounting cylinder, the end of the discharge pipe is connected with a material collecting box, and the material collecting box is connected with a fan.

[0026] By adopting the above technical scheme, when punching, the bottom end of the mounting cylinder abuts against the top of the module, the electromagnet is electrified, the core head is upwardly attracted by the magnetic force, and the core head moves along the radial direction of the copper pipe towards the copper pipe wall, so as to realize the punching and flanging of the copper pipe.

[0027] In the traditional way, a driving rod is slidably connected in the core rod, the core head is sleeved on the driving rod and slides along the axial direction of the driving rod, and an inclined surface is arranged on the driving rod at the position corresponding to the sliding of the core head; when punching, the driving rod is pulled out, so that the core head moves from the low part of the inclined surface to the high part of the inclined surface, thereby completing the punching. Therefore, although the core head in the traditional way can realize the radial movement along the copper pipe, the driving force acting on the core head during the movement is not parallel to the movement direction of the core head, which easily causes the end face of the core head to be unevenly stressed, and further causes the copper pipe to be unevenly stressed during punching, which easily causes the flanged hole to be rotten and the hole position to have copper pieces.

[0028] According to the above scheme, the force driving the core head to move is parallel to the movement direction of the core head, the end face of the core head is evenly stressed, and further the copper pipe is evenly stressed during punching, which reduces the occurrence of the flanged hole being rotten and the hole position having copper pieces, and improves the qualified rate.

[0029] In addition, the fan forms a negative pressure in the aggregate tank, so that the punched copper sheet is sucked into the aggregate tank through the discharge pipe, and the waste material is conveniently collected.

[0030] Optionally, the insert block is provided with a sinking groove at a position corresponding to the core pin.

[0031] The core pin comprises a punching portion and a connecting portion, the cross-sectional diameter of the connecting portion is smaller than that of the punching portion, the connecting portion is in sliding connection with the insert block, and the punching portion is embedded in the sinking groove.

[0032] By adopting the above technical solution, the speed increase of the object is proportional to the acting force and the acting time. The sinking groove is provided at the position of the insert block corresponding to the core pin, so that when the insert block abuts against the inner wall of the copper pipe, the punching portion has a certain distance from the copper pipe, the core pin can increase its own speed by using the distance, and the punching portion has a proper punching speed when it moves to the position of the copper pipe.

[0033] Optionally, the insert block is provided with a sliding groove at both sides of the position corresponding to the connecting portion, the length direction of the sliding groove is arranged along the movement direction of the core pin, the connecting portion is fixedly provided with a sliding block at a position corresponding to the sliding groove, and the sliding block slides along the length direction of the sliding groove.

[0034] By adopting the above technical solution, the movement of the core pin is guided, and the movement distance of the core pin can be limited to avoid the disengagement of the core pin from the insert block.

[0035] Optionally, the insert block is in sliding connection with an abutting block at both sides of the position corresponding to the core pin, a screw rod is threadedly connected in the abutting block, the screw rod is in rotational connection with the insert block, and the screw rod drives the abutting block to move towards or away from each other when it rotates.

[0036] By adopting the above technical solution, when the core pin needs to be replaced, the screw rod is rotated to drive the abutting block to move away from each other, so that the core pin is not blocked by the abutting block, the core pin is taken down, a new core pin is inserted into the corresponding position of the insert block, the screw rod is rotated to drive the abutting block to move towards each other, and the core pin is blocked.

[0037] Optionally, one end of the limiting rod is fixedly provided with an insertion rod, and the other end of the intermediate rod is provided with an insertion hole corresponding to the position of the insertion rod, the shape of the insertion hole being matched with that of the insertion rod.

[0038] The side wall of the insertion rod is fixedly provided with a guide rod, and the side wall of the insertion hole is provided with a limiting groove corresponding to the position of the guide rod, the shape of the limiting groove being matched with that of the guide rod.

[0039] By adopting the above technical solution, the insertion rod and the insertion hole are matched to facilitate the connection and disconnection between the intermediate rod and the limiting rod, and the guide rod and the limiting groove are matched to limit the direction in which the intermediate rod is inserted into the limiting rod, thereby avoiding the relative rotation between the intermediate rod and the limiting rod during punching.

[0040] Optionally, the mounting frame bottom is fixedly provided with a driving cylinder, a piston rod of the driving cylinder vertically extends downward, and the mounting cylinder is fixedly connected with the piston rod of the driving cylinder.

[0041] By adopting the technical scheme, the piston rod of the driving cylinder is telescopic to drive the mounting cylinder to vertically move, and the distance between the mounting cylinder and the copper pipe is adjusted to adjust the magnetic force received by the core head.

[0042] The automatic flanging process provided in the application adopts the following technical scheme:

[0043] An automatic flanging process comprises the following steps:

[0044] Adjusting the flanging equipment according to production drawings;

[0045] Adjusting the flanging equipment program according to production needs;

[0046] Clamping the copper pipe on the equipment to perform trial processing;

[0047] Performing quality inspection on the trial processing product, if the trial processing product is qualified, then performing batch production, if the quality inspection result is unqualified, then adjusting the equipment program again, performing trial processing, and repeating the above steps until the qualified trial processing product is produced;

[0048] Batch processing the copper pipe;

[0049] Removing the copper sheet and burrs on the copper pipe.

[0050] By adopting the technical scheme, on the one hand, the trial processing and quality inspection links are added to inspect the equipment and program, the program is optimized according to the inspection result of the trial processing product, and the production problems are avoided; on the other hand, the automatic flanging equipment is selected to perform production and processing, and the qualified rate of the product is greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0051] Figure 1 is a schematic diagram of the overall structure of the embodiment one of the application.

[0052] Figure 2 is a partial exploded view of the embodiment one for highlighting the specific structure of the core rod.

[0053] Figure 3 is a sectional view of the embodiment one for highlighting the insert block.

[0054] Figure 4 is a sectional view of the embodiment one for highlighting the core head.

[0055] Figure 5 is an exploded view of the embodiment one for highlighting the relief hole.

[0056] Figure 6 is a schematic view of the installation cylinder made in example one.

[0057] Figure 7 is a process flow chart of example two.

[0058] Reference signs: 1, rack; 11, tail seat; 111, tail three-jaw chuck; 12, sliding seat; 121, intermediate three-jaw chuck; 13, fixed seat; 131, horizontal pushing block; 132, mounting plate; 133, module; 134, clearance hole; 135, groove; 2, core rod; 21, limiting rod one; 211, plug-in rod; 212, guide rod; 22, intermediate rod; 221, insertion hole; 222, limiting groove; 223, plug-in hole; 224, insertion slot; 23, limiting rod two; 231, push rod; 232, cross rod; 3, inlay block; 31, core head; 311, punching part; 312, connecting part; 313, sliding block; 32, sliding groove; 33, sinking groove; 34, abutment block; 35, screw rod; 36, recess; 4, mounting frame; 41, driving cylinder; 42, frame body; 43, installation cylinder; 431, electromagnet; 44, discharge pipe; 45, material collecting box; 46, fan; 5, pushing cylinder; 51, head mounting seat; 52, guide column; 53, limiting seat; 54, head three-jaw chuck. DETAILED DESCRIPTION

[0059] The following will be described in detail in combination with the accompanying drawings. Figures 1-7 The present application is further described in detail.

[0060] Example one:

[0061] The example one of the present application discloses an automatic flanging device. Referring to Figure 1 An automatic flanging device comprises a horizontal rack 1, and the rack 1 top is sequentially provided with a tail seat 11, a sliding seat 12 and a fixed seat 13 along the length direction thereof. The tail seat 11 is fixedly arranged on the rack 1, and a tail three-jaw chuck 111 is rotatably connected to the side surface of the tail seat 11, and a core rod 2 is clamped on the tail three-jaw chuck 111, and the axis of the core rod 2 is horizontally arranged.

[0062] Referring to Figure 2 , 3, the core rod 2 sequentially comprises a limiting rod one 21, an intermediate rod 22 and a limiting rod two 23. The limiting rod one 21 is clamped at one end on the tail three-jaw chuck 111, and extends to the fixed base 13 at the other end. The intermediate portion of the end of the limiting rod one 21 extending to the fixed base 13 is fixedly connected with a plug-in rod 211, and the axis of the plug-in rod 211 is parallel to the axis direction of the limiting rod one 21. The intermediate rod 22 is provided with a plug hole 221 at the position corresponding to the plug-in rod 211, and the shape of the plug hole 221 is matched with the shape of the plug-in rod 211. The side wall of the plug-in rod 211 is fixedly provided with a guide rod 212, and the length direction of the guide rod 212 is parallel to the axial direction of the plug-in rod 211; the inner wall of the plug hole 221 is provided with a limiting groove 222 at the position corresponding to the guide rod 212, and the shape of the limiting groove 222 is matched with the shape of the guide rod 212. When the intermediate rod 22 is connected or separated from the limiting rod one 21, the plug-in rod 211 slides along the axial direction of the plug hole 221, and the guide rod 212 slides along the length direction of the limiting groove 222, which can make the connection and separation process more stable, and can also limit the direction of the intermediate rod 22 being plugged into the limiting rod one 21, so as to avoid the relative rotation between the intermediate rod 22 and the limiting rod one 21 during punching, and make the connection of the two more stable.

[0063] With reference to Figure 3 The intermediate rod 22 is provided with an inlay 3 which slides along the radial direction of the intermediate rod 22, and the side wall of the inlay 3 is fixedly provided with a sliding block which is arranged on the opposite two side surfaces of the inlay 3. The intermediate rod 22 is provided with a sliding groove at the sliding path of the inlay 3, and the sliding block slides along the length direction of the sliding groove when the inlay 3 slides along the radial direction of the intermediate rod 22, thereby guiding the movement of the inlay 3. In addition, the side surface of the inlay 3 is provided with an inclined surface. The side of the intermediate rod 22 opposite to the plug hole 221 is provided with a plug-in hole 223 which is coaxially arranged with the plug hole 221, and the side wall of the plug-in hole 223 is provided with an insertion groove 224 along the radial direction thereof.

[0064] With reference to Figure 2 The end of the limiting rod two 23 is fixedly connected with a push rod 231, and the side surface of the push rod 231 is provided with an inclined surface matched with the inclined surface of the inlay 3. The outer diameter of the push rod 231 is the same as the inner diameter of the plug-in hole 223, and the upper side wall of the push rod 231 is fixedly provided with a cross rod 232 matched with the insertion groove 224. When the intermediate rod 22 is separated from the limiting rod two 23, the top of the inlay 3 is flush with the top of the intermediate rod 22; when the push rod 231 is plugged into the intermediate rod 22 along the plug-in hole 223, the push rod 231 pushes the inlay 3 outward, so that the inlay 3 abuts against the inner wall of the copper pipe. In this process, the cross rod 232 slides along the length direction of the insertion groove 224, so that the movement of the intermediate rod 22 is more stable. After the push rod 231 enters the plug-in hole 223, the end of the limiting rod two 23 abuts against the end of the intermediate rod 22.

[0065] With reference to Figure 4The insert 3 is provided with a core head 31, the length direction of the core head 31 is arranged along the radial direction of the middle rod 22, and the core head 31 comprises a punching part 311 and a connecting part 312. The punching part 311 is fixedly connected with the connecting part 312, the cross-sectional diameter of the connecting part 312 is smaller than that of the punching part 311, the connecting part 312 slides along the insert 3, sliding blocks 313 are fixedly arranged on the opposite sides of the connecting part 312, sliding grooves 32 are arranged along the movement track of the sliding blocks 313 in the insert 3, and the sliding blocks 313 slide along the length direction of the sliding grooves 32, so that the movement process of the core head 31 is more stable. The insert 3 is provided with a sinking groove 33 at a position corresponding to the core head 31, and the punching part 311 is embedded in the sinking groove 33, so that when the insert 3 abuts against the inside of the copper pipe, the punching part 311 is at a certain distance from the copper pipe, the core head 31 can increase its movement speed by using the distance, and the punching part 311 has a proper punching speed when it moves to the position of the copper pipe.

[0066] With reference to Figure 4 The end of each sliding groove 32 on the insert 3 is slidably connected with an abutting block 34, a screw rod 35 is threadedly connected in the abutting block 34, and the screw rod 35 is rotatably connected with the insert 3. When the core head 31 needs to be replaced, the screw rod 35 is rotated to move the abutting blocks 34 away from each other, so that the core head 31 is not blocked by the abutting blocks 34, the core head 31 is taken off, a new core head 31 is inserted into the corresponding position of the insert 3, the screw rod 35 is rotated to move the abutting blocks 34 towards each other, and the core head 31 is blocked. The end of the screw rod 35 away from the abutting block 34 is recessed to form a driving hole, so that when the screw rod 35 is rotated, a hexagonal wrench can be inserted into the driving hole to drive the screw rod 35. The insert 3 is recessed to form a recess hole 36 at a position corresponding to the driving hole, and the recess hole 36 is used to accommodate the end of the screw rod 35.

[0067] With reference to Figure 1 The middle three-jaw chuck 121 is rotatably connected to the side of the sliding seat 12, and is arranged on the side away from the tail seat 11. The middle three-jaw chuck 121 is used for clamping the copper pipe. The sliding seat 12 slides along the length direction of the rack 1.

[0068] With reference to Figure 5 The fixed seat 13 is fixedly arranged on the top of the rack 1, and two horizontal pushing blocks 131 are arranged on the inner side of the fixed seat 13. The mutually close sides of the horizontal pushing blocks 131 are fixedly provided with mounting plates 132, the mutually close sides of the mounting plates 132 are detachably connected with modules 133, the top of each module 133 is provided with a clearance hole 134, and the opposite side of each module 133 is provided with a recess 135. The shape of the recess 135 is matched with the shape of the copper pipe to be machined.

[0069] With reference to Figure 5The top of the fixed seat 13 is provided with a mounting frame 4, the top of the mounting frame 4 is fixedly provided with a driving cylinder 41, the driving cylinder 41 is vertically arranged, and the piston rod of the driving cylinder 41 vertically extends downward. The end of the piston rod of the driving cylinder 41 is fixedly provided with a U-shaped frame body 42, the bottom of the frame body 42 is fixedly provided with a mounting cylinder 43, the top of the mounting cylinder 43 is fixedly connected with a discharge pipe 44, the discharge pipe 44 is connected with and communicates with the mounting cylinder 43. The bottom of the mounting cylinder 43 is open, and when the mounting cylinder 43 vertically moves downward along with the piston rod of the driving cylinder, the bottom of the mounting cylinder 43 abuts against the position of the corresponding relief hole 134 of the module 133.

[0070] With reference to Figure 6 A plurality of electromagnets 431 are embedded in the inner wall of the mounting cylinder 43, and the electromagnets 431 are annularly arranged around the inner wall of the mounting cylinder 43. The core head 31 is made of magnetic material, or an electromagnet material is embedded in the core head 31, so that the electromagnets 431 can attract the core head 31 to move in the direction of the electromagnets 431 after being electrified.

[0071] With reference to Figure 1 A material collecting box 45 is fixedly arranged on the side of the rack 1, the material collecting box 45 is connected with a fan 46 through a pipeline, and the end of the discharge pipe 44 is fixedly arranged on the top of the material collecting box 45 and communicates with the material collecting box 45.

[0072] With reference to Figure 1 A pushing cylinder 5 is horizontally fixedly arranged at the end of the rack 1, the cylinder body of the pushing cylinder 5 is fixedly arranged on the end face of the rack 1, the end of the piston rod of the pushing cylinder 5 is fixedly provided with a head mounting seat 51, and the head mounting seat 51 slides along the length direction of the rack 1. A guide column 52 is horizontally fixedly arranged at the bottom of the side end of the rack 1, a limiting seat 53 is fixedly arranged at the end of the guide column 52, and the head mounting seat 51 slides along the axial direction of the guide column 52 during sliding, so that the sliding process of the head mounting seat 51 is more stable. A head three-jaw chuck 54 is fixedly arranged on the side of the head mounting seat 51 close to the fixed seat 13, the head three-jaw chuck 54 is used for fixing the limiting rod two 23, and the head three-jaw chuck 54, the middle three-jaw chuck and the tail three-jaw chuck 111 are coaxially arranged.

[0073] The implementation principle of the automatic flanging equipment in the embodiment is as follows:

[0074] When the copper pipe is punched and flanged by using the technical scheme, the copper pipe is sleeved on the core rod 2 and fixed on the sliding seat 12 through the intermediate three-jaw chuck 121, then the piston rod of the push cylinder 5 is retracted, the limiting rod two 23 is horizontally moved towards the intermediate rod 22, the insert block 3 is lifted towards the copper pipe in this process, the insert block 3 is tightly attached to the inner wall of the copper pipe, the insert block 3 is fixed at the position to be processed of the copper pipe, the relative position of the two is fixed, so that when the core head 31 punches, the shaking of the insert block 3 is reduced, and the influence on the punching movement of the core head 31 is further reduced, thereby the punching and flanging precision is improved, and the qualified rate of the copper pipe punching and flanging process is improved. Moreover, the limiting rod two 23 and the limiting rod one 21 jointly abut against the intermediate rod 22 from both ends of the intermediate rod 22, so that the intermediate rod 22 is less likely to shake during punching.

[0075] Then, the modules 133 are moved towards each other to clamp the copper pipe, the copper pipe is clamped by the modules 133, the position of the copper pipe is fixed; the piston rod of the drive cylinder 41 is elongated, and the end of the mounting cylinder 43 abuts against the position of the limiting hole 134 of the module 133. The electromagnet 431 is energized, the core head 31 is upwardly attracted by magnetic force, and the core head 31 is moved along the radial direction of the copper pipe towards the wall of the copper pipe, so as to realize punching and flanging of the copper pipe. In the traditional way, a driving rod is slidably connected in the core rod 2, the core head 31 is sleeved on the driving rod and slides along the radial direction of the driving rod, and a slope is arranged on the driving rod at a position corresponding to the sliding position of the core head 31; during punching, the driving rod is pulled out, the core head 31 is moved from the low part of the slope to the high part of the slope, and the punching is completed. Therefore, although the core head 31 in the traditional way can move along the radial direction of the copper pipe, the driving force acting on the core head 31 during movement is not parallel to the movement direction of the core head 31, which easily causes uneven force on the end surface of the core head 31, and further causes uneven force on the copper pipe during punching, and easily causes the situation that the flanged hole is rotten and the hole position has copper pieces.

[0076] According to the above scheme, the force driving the core head 31 to move is parallel to the movement direction of the core head 31, the force on the end surface of the core head 31 is uniform, and further the force on the copper pipe during punching is uniform, so that the situation that the flanged hole is rotten and the hole position has copper pieces is reduced, and the qualified rate is improved.

[0077] In addition, the fan 46 forms negative pressure in the material collecting box 45, the punched copper pieces are sucked into the material collecting box 45 through the discharge pipe 44, and the waste is conveniently collected.

[0078] The intermediate rod 22 is detachably connected between the limiting rod one 21 and the limiting rod two 23, so as to replace the intermediate rod 22 with different inner diameters according to the inner diameter of the copper pipe, or to replace the core head 31 according to the hole diameter required to be punched; the traditional technology of integrally forming the core rod 2 is changed, the core rod 2 is divided into parts according to the functions of each section, and when the punching and flanging conditions change, only the intermediate rod 22 needs to be replaced, thereby saving materials and increasing the universality of the remaining parts.

[0079] Embodiment two:

[0080] Embodiment two of the present application discloses an automatic flanging process. Referring to Figure 7 An automatic flanging process comprises the following steps:

[0081] S1, material taking:

[0082] According to the production plan, the corresponding materials are taken.

[0083] S2, adjusting the flanging equipment:

[0084] According to the production drawing, the inner diameter, outer diameter, punching inner diameter and hole pulling height of the copper pipe to be processed are determined; according to the outer diameter of the copper pipe, the corresponding module 133 is selected, according to the inner diameter of the copper pipe, the corresponding intermediate rod 22 is replaced, according to the punching inner diameter, the core head 31 with the corresponding size is replaced, and according to the hole pulling height, the core head 31 with the appropriate length is selected.

[0085] The production equipment is zeroed and safety checked, and the first inspection of the equipment is performed by a special inspector.

[0086] S3, adjusting the flanging equipment program:

[0087] According to the arrangement of the hole position on the copper pipe, the equipment program is adjusted.

[0088] S4, trial processing of the copper pipe:

[0089] The copper pipe is clamped on the equipment for trial processing.

[0090] S5, quality inspection:

[0091] The trial processing product is inspected by a special inspector, the flanging hole distance is measured by using a caliper and a steel ruler, and the inner diameter of the pipe opening is measured by using a plug gauge. If the quality inspection result is qualified, S6 is performed, and if the quality inspection result is unqualified, S3 is returned to adjust the equipment program until the copper pipe with qualified trial processing is obtained.

[0092] S6, batch processing of the copper pipe:

[0093] After the trial processing is qualified, the copper pipe is batch processed.

[0094] S7, removing the copper sheet and burr:

[0095] In the processing process, due to process limitations, the flange hole may have copper pieces or burrs, at which time the staff needs to use tools to remove the copper pieces or burrs to prevent flowing into the welding to cause poor welding.

[0096] S8, blanking and filling product tracking card:

[0097] After processing, fill in the product tracking card, and place the processed materials in the turnover area.

[0098] In the above processing process, the production personnel perform self-inspection on the equipment every half hour, and specifically check whether there are copper pieces, copper cutting on the mold, whether the module 133 is loose, and other problems.

[0099] The above are preferred embodiments of the present application, not limited by the protection scope of the present application, therefore: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. An automatic flanging device, characterized in that: include: A frame (1) is provided with a tailstock (11), a sliding seat (12) and a fixed seat (13) in sequence along its length. The tailstock (11) and the fixed seat (13) are fixedly connected to the frame (1). The sliding seat (12) slides along the length of the frame (1) and is used to fix the copper tube. A module (133) is provided at the fixed seat (13) and is used to clamp the copper tube. A core rod (2) is horizontally provided on the side of the tailstock (11) and includes: a limiting rod (21) with one end fixed on the side of the tailstock (11) and the other end extending toward the fixed seat (13). An intermediate rod (22) is set at the position of the fixed seat (13), and one end is detachably connected to the end of the limiting rod (21). An insert (3) is provided on the intermediate rod (22). The insert (3) slides radially along the intermediate rod (22). A core head (31) is slidably connected on the insert (3). The core head (31) slides radially along the intermediate rod (22). A push rod (231) is slidably connected inside the intermediate rod (22). When it slides axially along the intermediate rod (22), it pushes the insert (3) towards the copper tube so that the insert (3) abuts against the inner wall of the copper tube. The module (133) has a clearance hole (134) at the top corresponding to the core head (31); the mounting bracket (4) is fixed on the top of the fixed base (13), and a mounting cylinder (43) is vertically arranged on the mounting bracket (4); the mounting cylinder (43) has openings at both ends, and the center line of the mounting cylinder (43) coincides with the center line of the clearance hole (134); an electromagnet (431) is provided on the inner wall of the mounting cylinder (43); a discharge pipe (44) is connected to the top opening end of the mounting cylinder (43), a collection box (45) is connected to the end of the discharge pipe (44), and a fan (46) is connected to the collection box (45).

2. The automatic flanging device according to claim 1, characterized in that: It also includes: a head mounting base (51), which is located on the side of the fixed base (13) away from the sliding base (12) and slides horizontally along the length of the frame (1). The head mounting base (51) is rotatably connected to a head three-jaw chuck (54); a limiting rod two (23), which is horizontally set. One end is mounted on the head mounting base (51) through the head three-jaw chuck (54), and the other end extends toward the fixed base (13). A push rod (231) is fixed at the end of the limiting rod two (23). When the push rod (231) is inserted into the middle rod (22), the end of the limiting rod two (23) abuts against the end of the middle rod (22).

3. The automatic flanging device according to claim 1, characterized in that: The insert (3) has a recessed groove (33) at the position corresponding to the core head (31); the core head (31) includes a punched part (311) and a connecting part (312). The cross-sectional diameter of the connecting part (312) is smaller than the cross-sectional diameter of the punched part (311). The connecting part (312) and the insert (3) are slidably connected, and the punched part (311) is embedded in the recessed groove (33).

4. The automatic flanging device according to claim 3, characterized in that: The insert (3) has grooves (32) on both sides corresponding to the connecting part (312). The length direction of the grooves (32) is set along the movement direction of the core head (31). A slider (313) is fixed at the position of the connecting part (312) corresponding to the groove (32). The slider (313) slides along the length direction of the groove (32).

5. An automatic flanging device according to claim 4, characterized in that: On the insert (3), there are sliding abutment blocks (34) on both sides corresponding to the core head (31). The abutment block (34) is threaded with a screw (35) inside. The screw (35) is rotatably connected to the insert (3). When the screw (35) rotates, it drives the abutment block (34) to move towards or away from each other.

6. An automatic flanging device according to claim 1, characterized in that: The limiting rod (21) has a plug-in rod (211) fixed at one end, and the middle rod (22) has a plug hole (221) at the end corresponding to the plug-in rod (211), the shape of the plug hole (221) being adapted to the plug-in rod (211); the plug-in rod (212) has a guide rod (212) fixed on the side wall, and the plug hole (221) has a limiting groove (222) at the side wall corresponding to the guide rod (212), the shape of which is adapted to the guide rod (212).

7. An automatic flanging device according to claim 1, characterized in that: The mounting bracket (4) has a drive cylinder (41) fixedly mounted at the bottom. The piston rod of the drive cylinder (41) extends vertically downward, and the mounting cylinder (43) is fixedly connected to the piston rod of the drive cylinder (41).

8. An automatic flanging process using the flanging equipment as described in claims 1-7, characterized in that: include: Adjust the flanging equipment according to the production drawings; adjust the flanging equipment program according to production needs; clamp the copper tubes on the equipment for trial processing; conduct quality inspection on the trial-processed products. If they are qualified, proceed to mass production. If the quality inspection results are unqualified, readjust the equipment program and conduct trial processing again until qualified trial-processed products are produced; mass-process the copper tubes; remove the copper sheets and burrs from the copper tubes.

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