CN211888445U - Double-machine combined copper pipe drawing unit - Google Patents

Abstract

The utility model discloses a double-machine combined copper pipe drawing machine set, which belongs to the field of pipe processing equipment, wherein pipes can be conveyed at the side part of the equipment, and secondary drawing can be completed, and the length of the equipment is shortened, the double-machine combined copper pipe drawing machine set comprises a feeding device, a first drawing machine and a second drawing machine which are arranged side by side, a transfer mechanism for conveying the pipes is arranged between the first drawing machine and the second drawing machine, one side of the first drawing machine is connected with the feeding device, the other side is connected with the transfer mechanism, one side of the second drawing machine is connected with the transfer mechanism, the other side is provided with a material collecting frame, the first drawing machine and the second drawing machine are provided with a drawing outer die and a drawing inner die for drawing the pipes, a first conveying device capable of conveying the pipes to the drawing inner die is arranged above the drawing outer die, and a second conveying device capable of changing the position of the stretching inner die to realize tube stretching is arranged on the front side of the stretching outer die.

Description

Double-machine combined copper pipe drawing unit

[ technical field ] A method for producing a semiconductor device

The utility model relates to a tubular product processing equipment field especially relates to double-machine combined copper pipe stretching unit.

[ background of the invention ]

When long tubular product is produced, thick and short tubular product of general production earlier shortens the process of producing the pipe, uses the stretcher to draw tubular product again, produces thin and long tubular product, and the length of tubular product just can prolong greatly, can coil the back with the tubular product after drawing when producing the coil pipe and store, and then can not so deposit during production branch pipe, and consequently the production length of equipment is longer.

In the prior art, the pipe is generally drawn by secondary stretching, so that the number of dies can be reduced, the pipe is protected from being broken in the stretching process, the production line of the pipe is longer, a larger field is needed for accommodating equipment, and if the pipe can be conveyed at the side part, the equipment stretched twice can be arranged side by side to shorten the length of the equipment, so that a novel stretching unit needs to be redesigned.

[ Utility model ] content

The utility model aims to solve the technical problem that overcome prior art not enough and propose double-machine combined copper pipe stretcher group, tubular product can convey at the lateral part of equipment, and can accomplish the secondary and stretch, has shortened the length of equipment.

In order to solve the technical problem, the utility model adopts the following technical scheme:

double-machine combined copper pipe drawing machine set comprises a feeding device, a first drawing machine and a second drawing machine which are arranged side by side, wherein a transfer mechanism for conveying pipes is arranged between the first drawing machine and the second drawing machine, one side of the first drawing machine is connected with the feeding device, the other side of the first drawing machine is connected with the transfer mechanism, one side of the second drawing machine is connected with the transfer mechanism, the other side of the second drawing machine is provided with a material receiving frame, the first drawing machine is provided with a drawing outer die and a drawing inner die which are used for drawing the pipes on the second drawing machine, a first conveying device capable of conveying the pipes to the drawing inner die is arranged above the drawing outer die, and a second conveying device capable of changing the position of the drawing inner die to realize the drawing of the pipes is arranged on the front side of the drawing outer.

The utility model discloses a two-machine combined copper pipe stretcher unit, have two stretcher, can carry out the secondary drawing to tubular product, and, tubular product all is at the lateral part of equipment when conveying on material feeding unit, first stretcher, second stretcher, compare the secondary drawing equipment among the prior art, the length has shortened a lot, and after the tubular product accomplishes the secondary drawing, also carry out tubular product collection at the lateral part, the requirement to the place of arranging equipment reduces, need not design great place to hold this equipment, can reduce the manufacturing, installation, the transportation degree of difficulty of equipment simultaneously; on the first stretcher or the second stretcher, the pipe can be conveyed through the first conveying device, meanwhile, the pipe can be stretched below the first conveying device, the two stretchers can work simultaneously, and the processing efficiency is high; in the stretching process, the stretching inner die and the stretching outer die simultaneously assist in stretching, and a product with better quality can be obtained.

Furthermore, the stretching outer die comprises a die holder and a movable die plate, wherein the die holder is provided with a stretching die, and the movable die plate is provided with a peeling die. Along with the conveying of tubular product, can be in proper order through tensile mould and skinning mould, stretch earlier, skinning again, the conveying of tubular product and the tensile skinning of tubular product can be gone on simultaneously at the co-altitude position of stretcher, when skinning, need leave the clearance between skinning mould and the tensile mould, waste material that produces after the convenient skinning drops from the gap, movable mould board can be in tensile in-process area skinning mould removal, change its position for the die holder, and, after tubular product passed tensile mould, movable mould board also can move towards tubular product, extrude tubular product makes tubular product pass skinning mould, thereby can make things convenient for equipment to accomplish preliminary skinning operation.

Further, the stretching inner die comprises a first core rod and an inner die head located at the end part of the first core rod, and when the pipe is stretched, the inner die head is located in the stretching inner die, and the pipe is located between the stretching inner die and the inner die head. Along with the conveying of tubular product, can overlap on first core bar behind the interior die head earlier to the position of second conveyer change tubular product, when interior die head was located tensile mould, tubular product can be extruded between the two, behind the pulling tubular product alright in order to obtain tensile tubular product.

Furthermore, a slidable clamping trolley is further arranged on the first stretching machine and the second stretching machine, and the clamping trolley is located on the rear side of the stretching outer die. In the stretching process, the pipe passes through the stretching die and then the peeling die, and the exposed end part of the pipe can be clamped by the clamping trolley, so that the pipe can be dragged to move to complete subsequent stretching and peeling.

Furthermore, the first conveying device comprises a plurality of first rollers arranged above the stretching outer die and a first motor driving the first rollers to rotate, and the first conveying device is located on the rear side of the stretching inner die. The pipe is realized through first conveyer to the removal of tensile centre form on first stretcher or second stretcher, under the action of gravity of pipe self, and can produce not little frictional force between the first gyro wheel, along with the drive of first motor to first gyro wheel, first gyro wheel alright promote pipe and constantly remove in the pivoted, and a plurality of first gyro wheels can support pipe excellently, make pipe can keep steadily in data send process.

Further, the first conveying device further comprises a second roller and a first lifting cylinder for controlling the second roller to lift, and the pipe is clamped between the first roller and the second roller during conveying. The first lifting cylinder can control the lifting of the second roller, and the pipe is clamped between the first roller and the second roller in the pipe conveying process, so that the friction force between the first roller and the second roller is increased, the slipping condition cannot occur in the pipe conveying process, and the pipe can be conveyed more stably.

Furthermore, the second conveying device comprises a turnover disc and a second motor for driving the turnover disc to rotate, a sleeve is arranged on the turnover disc, and the stretching inner die is arranged in the sleeve. The turnover disc can rotate under the action of the second motor, the sleeve and the first core rod can be driven to rotate synchronously while rotating, if the conveying device finishes conveying the pipe, the pipe can be sleeved outside the first core rod, and the position of the pipe in the vertical direction is changed along with the synchronous rotation of the turnover disc.

Furthermore, a second core rod connected with the stretching inner die is further arranged in the sleeve, and the second conveying device further comprises a driving piece for driving the second core rod to move. When the driving piece pushes the second core rod to move, the second core rod can push the first core rod and the pipe wrapped outside the first core rod to move, and the pipe is pushed to the drawing outer die to draw the pipe.

Furthermore, the feeding device comprises a rack and a lifting device arranged on the rack, a guide part capable of guiding the pipe to be conveyed to the first conveying device is arranged between the rack and the first stretching machine, and the lifting device can convey the pipe to the guide part. The pipes to be processed are stacked on the rack and can be lifted upwards under the action of the lifting device, mutual acting force exists between the pipes, and along with the lifting of the pipes, the acting force between the pipes can push the uppermost pipe to move to the guide part and then move to the first conveying device of the first stretching machine along the guide part.

Furthermore, a pipe conveying plate is arranged below the stretching outer die on the first stretching machine and the second stretching machine, the pipe conveying plate on the first stretching machine can guide the stretched pipe to move to the transfer mechanism, and the pipe conveying plate on the second stretching machine can guide the stretched pipe to move to the material receiving frame. Accomplish the tubular product after the drawing and can drop on tubular product conveying board, on first stretcher, tubular product can remove to transfer mechanism along tubular product conveying board on to can transmit to the second stretcher under transfer mechanism's effect, accomplish tensile tubular product on the second stretcher, also can drop on tubular product conveying board, and move to receiving in the material frame along tubular product conveying board surface, played the effect that the guide tubular product removed, in order to realize the lateral part conveying of tubular product at equipment.

These features and advantages of the present invention will be disclosed in more detail in the following detailed description and the accompanying drawings.

[ description of the drawings ]

The invention will be further explained with reference to the drawings:

fig. 1 is a schematic structural view of a double-machine combined copper pipe drawing unit in the embodiment of the present invention;

fig. 2 is a side view of a stretcher according to an embodiment of the present invention;

FIG. 3 is an enlarged schematic view at A in FIG. 2;

FIG. 4 is an enlarged schematic view at B of FIG. 2;

fig. 5 is a schematic structural view of the stretching outer mold in the embodiment of the present invention;

fig. 6 is a partial top view of a stretcher according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a transfer mechanism in an embodiment of the present invention;

fig. 8 is a schematic structural view of a feeding device in an embodiment of the present invention.

Reference numerals:

the device comprises a feeding device 100, a lifting device 110, a third roller 111, a winding wheel 112, a third motor 113, a first frame 120, a second frame 130, a guide part 140, a first guide surface 141, a second guide surface 142, a belt 150, a material blocking device 160, a second lifting cylinder 161 and a blocking block 162;

the pipe drawing machine comprises a first drawing machine 201, a second drawing machine 202, a pipe conveying plate 210, a centering mechanism 220, a fixing frame 221, a trapezoidal ring body 222, a floating roller 223 and an elastic piece 224;

a transfer mechanism 300, a chain belt 310, and a carrier 320;

a material receiving frame 400;

the device comprises a stretching external mold 510, a mold seat 511, a stretching mold 512, a peeling mold 513, a movable mold plate 514, an oil cylinder 515, a stretching internal mold 520, a first core rod 521, an internal mold head 522 and a clamping trolley 530;

the first conveying device 610, the supporting frame 611, the first roller 612, the first motor 613, the clamping component 614, the second roller 6141, the first lifting cylinder 6142, the second conveying device 620, the turning disc 621, the second motor 622, the sleeve 623, the second core rod 624, the adjusting assembly 625, the adjusting motor 6251 and the adjusting sleeve 6252.

[ detailed description ] embodiments

The technical solutions of the embodiments of the present invention are explained and explained below with reference to the drawings of the embodiments of the present invention, but the embodiments described below are only preferred embodiments of the present invention, and not all embodiments. Based on the embodiments in the embodiment, other embodiments obtained by those skilled in the art without any creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Example one

Referring to fig. 1 to 8, the present embodiment provides a double-machine combined copper pipe drawing unit, which includes a feeding device 100, a first drawing machine 201 and a second drawing machine 202 arranged side by side, a transfer mechanism 300 for conveying the tube is arranged between the first stretcher 201 and the second stretcher 202, one side of the first stretcher 201 is connected with the feeding device 100, the other side is connected with the transfer mechanism 300, one side of the second stretcher 202 is connected with the transfer mechanism 300, the other side is provided with a material receiving frame 400, the first stretcher 201 and the second stretcher 202 are provided with an outer stretching mold 510 and an inner stretching mold 520 for stretching a pipe, a first conveying device 610 capable of conveying the pipes to the stretching inner die 520 is arranged above the stretching outer die 510, the front side of the stretching outer die 510 is provided with a second conveying device 620 capable of changing the position of the stretching inner die 520 to realize tube stretching.

The utility model discloses a copper pipe stretcher is united to duplex, two elongators have, can carry out the secondary drawing to tubular product, and, tubular product all is at the lateral part of equipment when conveying on material feeding unit 100, first elongator 201, second elongator 202, compare the secondary drawing equipment among the prior art, the length has shortened a lot, and after accomplishing the secondary drawing, tubular product also carries out tubular product collection at the lateral part, the requirement to the place of arranging equipment reduces, need not design great place to hold this equipment, can reduce the manufacturing of equipment, the installation, the transportation degree of difficulty simultaneously; on the first stretcher 201 or the second stretcher 202, the tube can be conveyed by the first conveying device 610, meanwhile, the tube can be stretched below the first conveying device 610, the two stretchers can work simultaneously, and the processing efficiency is high; in the stretching process, the inner stretching die 520 and the outer stretching die 510 are used for assisting in stretching at the same time, so that a product with better quality can be obtained.

Referring to fig. 3 and 4, the stretching machine may be divided into upper and lower layers, the outer stretching mold 510 is located at the lower layer, the first conveying device 610 is located at the upper layer, and the second conveying device 620 may control the inner stretching mold 520 to be switched between the upper and lower layers. When the tubular product conveys on the upper strata, by first conveyer 610 drive, tubular product removes to tensile centre form 520, and second conveyer 620 then can change the position of tubular product, shifts tubular product from the upper strata to the lower floor, alright in order to accomplish the tensile of tubular product in the conveying of lower floor.

Referring to fig. 5, the external stretching mold 510 includes a mold base 511, a stretching mold 512, and a peeling mold 513, and during continuous conveying, the tube sequentially passes through the stretching mold 512 and the peeling mold 513, and is stretched first and then peeled, and the conveying of the tube and the stretching and peeling of the tube can be performed simultaneously at different height positions of the stretching machine.

In the peeling process, a great deal of waste materials are generated and need to be removed, a gap needs to be reserved between the peeling die 513 and the stretching die 512 to facilitate the discharge of the waste materials, therefore, the stretching external die 510 further comprises a movable die plate 514, the movable die plate 514 can move relative to the die holder 511, the peeling die 513 is arranged on the movable die plate 514, two oil cylinders 515 are arranged on the die holder 511, push rods on the oil cylinders 515 are connected with the movable die plate 514 so as to control the movement of the movable die plate 514, the movable die plate 514 can move along with the peeling die 513 in the stretching process to change the position of the peeling die relative to the die holder 511, the gap between the stretching die 512 and the peeling die 513 is generated, and after the pipe passes through the stretching die 512, the movable die plate 514 can also move towards the pipe so as to enable the movable die plate 514 to extrude the pipe, so that the pipe can pass through the peeling die 513, so as to avoid the situation that the peeling can not be finished because the driving force of the second conveying device 620 to the pipe is insufficient.

Referring to fig. 1 and 6, in addition, a slidable clamping trolley 530 is further disposed on the first stretcher 201 and the second stretcher 202, the clamping trolley 530 is located behind the stretching outer die 510, after the end of the tube extends out of the peeling die 513, the clamping trolley 530 can rapidly clamp the tube that is peeled for subsequent stretching and peeling, displacement of the clamping trolley 530 on the first stretcher 201 or the second stretcher 202 is controlled by a reciprocating motor (not shown), the reciprocating motor is disposed at the end of the first stretcher 201 or the second stretcher 202 far away from the second conveying device 620, and the distance between the reciprocating motor and the clamping trolley 530 is short, so that control of the clamping trolley 530 is convenient.

The inner stretching die 520 comprises a first core rod 521 and an inner die head 522 positioned at the end of the first core rod 521, when a pipe is stretched, the inner die head 522 is positioned in the stretching die 512, the pipe is positioned between the stretching die 512 and the inner die head 522, the pipe passes through the inner die head 522 and then is sleeved on the first core rod 521 along with the transmission of the pipe, the first core rod 521 sleeved with the pipe is transferred to the lower side by a second transmission device 620, the pipe is continuously transmitted to the stretching outer die 510 to move, meanwhile, the stretching inner die 520 also synchronously moves, the inner die head 522 enters the stretching die 512, the pipe is extruded between the inner die head 522 and the stretching die 512, and the continuous pipe is pulled to pass through the inner die head 522 and the stretching die 512 along with the movement of the clamping trolley 530, so that the stretching of the pipe is completed.

Referring to fig. 8, the tube conveying plate 210 is disposed at the same position on the first stretcher 201 and the second stretcher 202, the tube conveying plate 210 is located below the clamping cart 530, and after the tube is stretched and peeled, the clamping cart 530 releases the tube, so that the tube drops on the tube conveying plate 210, and moves onto the transfer mechanism 300 or moves into the material receiving frame 400 under the guidance of the tube conveying plate.

The pipe material transferring mechanism 300 has one end connected to the first stretching machine 201 and the other end connected to the first conveying device 610 of the second stretching machine 202, so that the pipe material processed by the first stretching machine 201 can be transferred to the first conveying device 610 of the second stretching machine 202 to start the second conveying and stretching.

Referring to fig. 7, the transfer mechanism 300 includes spaced-apart chain belts 310, the tube material conveying plate 210 is disposed between the chain belts 310, a plurality of material carriers 320 are disposed on the chain belts 310, the plurality of material carriers 320 can move along with the driving of the chain belts 310, and can hold the tube material between the material carriers 320 and the chain belts 310 after contacting the tube material on the tube material conveying plate 210, and finally can be driven to the first conveyor 610 of the second stretching machine 202 along with the chain belts 310.

The chain belt 310 is provided with a sensor (not shown) capable of sensing whether the chain belt 310 is full of pipes, and when the chain belt 310 cannot continuously carry pipes, the feeding device 100 stops feeding the first stretcher 201 until the chain belt 310 has a vacancy.

Example two

The present embodiment specifically describes the structure of the first transmission device 610, specifically: referring to fig. 3 and 8, the first conveying device 610 includes a plurality of pairs of support frames 611 arranged at intervals, the support frames 611 are provided with first rollers 612 and first motors 613 for driving the first rollers 612 to roll, the support frames 611 are arranged on both sides of the stretching machine, the first rollers 612 are arranged between each pair of support frames 611 and located above the clamping trolley 530, the movement of the tube on the first stretching machine 201 or the second stretching machine 202 to the stretching inner die 520 is realized through the first conveying device, under the action of the gravity of the tube, a small friction force is generated between the tube and the first rollers 612, the first rollers 612 can push the tube to move continuously while rotating along with the driving of the first rollers 612 by the first motors 613, and the plurality of first rollers 612 can excellently support the tube, so that the tube can be kept stable in the conveying process.

The first motor 613 is only provided at one end near the drawing outer die 510, and can simultaneously drive two first rollers 612 to rotate, and the remaining first rollers 612 only play a supporting role and can rotate relative to the supporting frame 611, so as to reduce the influence of friction force on the pipe transmission.

The first conveying device 610 further includes a clamping component 614 disposed on the support frame 611 and used for clamping the tube, where the clamping component 614 includes a second roller 6141 and a first lifting cylinder 6142 that controls the second roller 6141 to lift, the clamping component 614 is provided with two rollers, which are respectively disposed above the first roller 612 controlled by the first motor 613, the second roller 6141 can clamp the tube between the first roller 612 and the second roller 6141 under the action of the first lifting cylinder 6142, so as to increase friction during transmission, so that the tube is kept stable, and the second roller 6141 can also rotate relative to the support frame 611, and therefore, a slip situation does not occur during conveying.

EXAMPLE III

The present embodiment specifically describes the structure of the second conveying device 620, specifically: referring to fig. 4, the second conveying device 620 includes a turning plate 621 and a second motor 622 for driving the turning plate 621 to rotate, two sleeves 623 are disposed on the turning plate 621, the stretching inner mold 520 is disposed in the sleeves 623, the turning plate 621 can rotate 180 ° under the action of the second motor 622, and can rotate synchronously with the sleeves 623, the first core rod 521 and the pipe sleeved outside the first core rod 521, so as to change the vertical position of the pipe, achieve vertical position replacement, and after the replacement is completed, the first conveying device 610 can convey the pipe to the inside of the sleeve 623 above.

In addition, in order to realize that the second conveying device 620 can convey the tube to the drawing outer die 510, the sleeve 623 is further provided with a second core rod 624 connected with the first core rod 521, the diameter of the second core rod 624 is larger than that of the tube, the turning disc 621 is further provided with a driving element (not shown) for driving the second core rod 624 to move, and when the driving element pushes the second core rod 624 to move, the second core rod 624 can push the first core rod 521 and the tube wrapped outside the first core rod 521 to move and push the tube to the drawing outer die 510, so as to draw the tube.

Example four

The present embodiment proposes an adjusting component 625 on the basis of the above embodiments, specifically: referring to fig. 4, in the drawing process, the tube is drawn by the combined action of the inner die head 522 and the drawing die 512, when the tube moves towards the second conveyer 620 under the action of the first conveyer 610, the tube passes through the inner die head 522 and then is sleeved outside the first core rod 521, a part of the tube protrudes out of the end of the first core rod 521, then the second conveyer 620 completes the up-down position replacement, the second core rod 624 pushes the first core rod 521 and the tube sleeved on the first core rod 521 to move, the inner die head 522 enters the drawing die 512, and the part of the protruding tube is already outside the drawing die 512, and the clamping trolley 530 can clamp the section of the tube to start the drawing operation of the tube.

Because the stroke of the driving element is not changed, the displacement amounts of the second core rod 624 and the first core rod 521 are not changed, and a certain distance is required between the inner die head 522 and the drawing die 512 to realize normal processing, but in the long-time use process, the distance between the inner die head 522 and the drawing outer die 510 is changed, and the distance between the inner die head 522 and the drawing outer die 510 is not necessarily the optimal distance when the inner die head and the drawing outer die are used for the first time, so that the adjusting assembly 625 is arranged on the turning disc 621 to change the axial position of the second core rod 624, thereby changing the overall position of the first core rod 521 and the second core rod 624, and ensuring normal processing and product quality.

The adjusting assembly 625 is arranged on the turning disc 621 and comprises two symmetrically arranged adjusting motors 6251, an adjusting sleeve 6252 matched with the second core rod 624 is arranged on the turning disc 621, the adjusting motor 6251 can change the position of the second core rod 624 in the adjusting sleeve 6252 during operation, thereby changing the positions of the first core rod 521 and the second core rod 624, and the two adjusting motors 6251 can respectively adjust the second core rods 624 at different positions.

EXAMPLE five

Referring to fig. 3, in the present embodiment, a centering mechanism 220 is added on the basis of the fourth embodiment, when the tube is transmitted to the stretching inner mold 520 by the first transmission device 610, the tube needs to be aligned with the inner mold head 522 of the first core rod 521 to be sleeved outside the first core rod 521, so as to facilitate the subsequent stretching operation, and the centering mechanism 220 can guide the tube to be transmitted toward the first core rod 521, specifically, the embodiment is as follows: be provided with the mount 221 on the stretcher, be equipped with a trapezoidal ring body 222 on the mount 221, the diameter of its both sides is different, and the diameter that is close to first conveyor 610 one side is bigger to in convenient pipe enters into trapezoidal ring body 222, first core bar 521 also enters into trapezoidal ring body 222 under the effect of driving piece in, thereby shorten the distance between pipe and the interior die 522, make things convenient for the transmission of pipe.

In addition, in order to ensure that the first core rod 521 is located at the center of the trapezoid ring body 222, the fixed frame 221 is further provided with a pair of floating rollers 223, the floating rollers 223 are connected with the fixed frame 221 through elastic members 224, have the capability of floating up and down, can clamp the first core rod 521, and are kept at the center of the trapezoid ring body 222 through the action of the elastic members 224.

EXAMPLE six

Referring to fig. 8, the present embodiment specifically illustrates the structure of the feeding device 100, specifically: the feeding device 100 comprises a frame and a lifting device 110, the frame is divided into a first frame 120 and a second frame 130, the second frame 130 is close to a first stretcher 201, a guide part 140 is arranged between the second frame 130 and the first stretcher 201, a belt 150 is arranged between the end parts of the first frame 120 and the second frame 130, a pipe is placed on the belt 150, a third roller 111 is arranged on the first frame 120, the lifting device 110 comprises a winding wheel 112 and a third motor 113 for driving the winding wheel 112 to rotate, one end of the belt 150 is fixed with the second frame 130, the other end of the belt 150 is fixed with the winding wheel 112 after winding around the third roller 111, the rotation of the winding wheel 112 can be controlled by the third motor 113, when the winding wheel 112 rotates, the belt 150 can be wound on the surface of the belt 150, the tensioning of the belt 150 and the rising of the pipe are realized, after the motor rotates reversely, the winding wheel 112 releases the wound belt 150, the wound belt 150 is loosened, the pipe descends, and the belt 150 keeps, when the belt 150 is loosened or tightened to move, the third roller 111 is driven to move synchronously, so that the abrasion of the belt 150 in the loosening or tightening process can be reduced, and the service life is prolonged.

The height of the first frame 120 is higher than that of the second frame 130, so as to continuously rise along with the pipe, firstly, the blocking to the pipe at the second frame 130 disappears firstly, it can be ensured that the pipe moves towards the guide part 140 without fail, and the belt 150 can form an arc-shaped belt support with one higher end and one lower end, the lowest point of the arc-shaped belt support is not located between the first frame 120 and the second frame 130, but is more inclined to the second frame 130, so that the pipe tends to move towards the second frame 130 by the acting force between the pipes, and can move onto the guide part 140 more quickly, the height required to lift the pipe can be reduced, and the power consumption can be reduced.

The guide part 140 is provided with a first guide surface 141 and a second guide surface 142, the first guide surface 141 can guide the pipe to roll into between the first frame 120 and the second frame 130, the second guide surface 142 can guide the pipe to roll into the first stretcher 201, therefore, when the pipe is lifted upwards under the action of the lifting device 110, part of the pipe can move to the guide part 140, along with the descending of the belt 150, part of the pipe remains on the guide part 140, the pipe on the first guide surface 141 rolls downwards onto the belt 150, the pipe on the second guide surface 142 rolls towards the first stretcher 201, and the first guide surface 141 and the second guide surface 142 can be inclined surfaces or arc surfaces, so that automatic feeding is realized.

However, the first transfer device 610 of the first stretcher 201 can only transfer one pipe at a time in operation, and therefore, when transferring pipes to the stretcher, only one pipe can be transferred, and therefore, in order to achieve the purpose, the second frame 130 is provided with the dam device 160, and the dam device 160 can stop the pipe from moving to the first stretcher 201 on the guide portion 140 when the pipe is present on the stretcher, and can also release the blockage of the pipe after the stretcher is empty, so that the pipe can move to the stretcher;

under the blocking effect of the material blocking device 160, the pipe can stay on the second guide surface 142 or most of the pipes are located on the second guide surface 142, and keep still under the effect of the material blocking device 160, if there are two pipes on the guide portion 140, the second pipe cannot move continuously under the blocking effect of the first pipe, and keep on the first guide surface 141 or most of the pipes are located on the first guide surface 141, and can return to the belt 150 along the first guide surface 141, so that one pipe can be fed, and the normal operation of the stretcher cannot be hindered.

EXAMPLE seven

The embodiment specifically describes the structure of the material blocking device 160, specifically: referring to fig. 8, the material blocking device 160 includes a second lifting cylinder 161, and a blocking block 162 hinged to an end of a piston rod of the second lifting cylinder 161, the blocking block 162 is rotatably engaged with the second frame 130, and the second lifting cylinder 161 is fixed on the second frame 130.

Along with the lifting of the piston rod controlled by the second lifting cylinder 161, the blocking block 162 is also pushed to rotate around the joint between the blocking block and the second frame 130, so as to block and release the tube.

In addition, a sensor (not shown) is further disposed at the stopping device 160, which can sense whether a pipe is in contact with the blocking block 162, when the pipe is in contact with the blocking block 162, the lifting device 110 stops lifting the pipe (at this time, the blocking block 162 is located at M1 in fig. 8), and the pipe stops feeding; when no tube is sensed to be in contact with the stopper 162 (when the stopper 162 is located at M2 in fig. 8), the lifting device 110 starts to lift the tube and transfer the tube onto the guide 140.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and those skilled in the art should understand that the present invention includes but is not limited to the contents described in the drawings and the above specific embodiments. Any modification which does not depart from the functional and structural principles of the present invention is intended to be included within the scope of the claims.

Claims (10)

1. Double-machine combined copper pipe stretching unit is characterized in that: including material feeding unit, first stretcher and the second stretcher that sets up side by side, first stretcher with be equipped with the transfer mechanism of conveying tubular product between the second stretcher, first stretcher one side with material feeding unit connects, the opposite side with transfer mechanism connects, second stretcher one side with transfer mechanism connects, and the opposite side is equipped with the receipts material frame, first stretcher with be equipped with the tensile external mold and the tensile centre form that are used for tensile tubular product on the second stretcher, tensile external mold top be equipped with can to the first conveyor of tensile centre form transmission tubular product, tensile external mold front side is equipped with and can changes tensile centre form position realizes the tensile second conveyer of tubular product.

2. The double-machine combined copper pipe drawing unit as claimed in claim 1, wherein: the stretching outer die comprises a die holder and a movable die plate, wherein the die holder is provided with a stretching die, and the movable die plate is provided with a peeling die.

3. The double-machine combined copper pipe drawing unit as claimed in claim 2, wherein: the stretching inner die comprises a first core rod and an inner die head arranged at the end part of the first core rod, and when a pipe is stretched, the inner die head is arranged in the stretching inner die, and the pipe is arranged between the stretching inner die and the inner die head.

4. The double-machine combined copper pipe drawing unit as claimed in claim 1, wherein: the first stretcher and the second stretcher are further provided with a slidable pipe clamping trolley, and the pipe clamping trolley is located on the rear side of the stretching outer die.

5. The double-machine combined copper pipe drawing unit as claimed in one of claims 1 to 4, wherein: the first conveying device comprises a plurality of first rollers arranged above the stretching outer die and a first motor driving the first rollers to rotate, and the first conveying device is located on the rear side of the stretching inner die.

6. The double-machine combined copper pipe drawing unit as claimed in claim 5, wherein: the first conveying device further comprises a second roller and a lifting cylinder for controlling the second roller to lift, and the pipe is clamped between the first roller and the second roller during conveying.

7. The double-machine combined copper pipe drawing unit as claimed in one of claims 1 to 4, wherein: the second conveying device comprises a turnover disc and a second motor for driving the turnover disc to rotate, a sleeve is arranged on the turnover disc, and the stretching inner die is arranged in the sleeve.

8. The double-machine combined copper pipe drawing unit as claimed in claim 7, wherein: the sleeve is internally provided with a second core rod connected with the stretching inner die, and the second conveying device further comprises a driving piece for driving the second core rod to move.

9. The double-machine combined copper pipe drawing unit as claimed in claim 1, wherein: the feeding device comprises a rack and a lifting device arranged on the rack, a guide part capable of guiding the pipe to be conveyed to the first conveying device is arranged between the rack and the first stretcher, and the lifting device can convey the pipe to the guide part.

10. The double-machine combined copper pipe drawing unit as claimed in claim 1, wherein: the first stretcher and the second stretcher are positioned below the stretching outer die, the pipe conveying plate on the first stretcher can guide stretched pipes to move to the transfer mechanism, and the pipe conveying plate on the second stretcher can guide stretched pipes to move to the material receiving frame.

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