CN111545583A

CN111545583A - Stretching die and double-head automatic stretching machine thereof

Info

Publication number: CN111545583A
Application number: CN202010545525.9A
Authority: CN
Inventors: 胡韶华; 汪女辉; 柏占伟
Original assignee: Chongqing Vocational Institute of Engineering
Current assignee: Chongqing Vocational Institute of Engineering
Priority date: 2020-06-16
Filing date: 2020-06-16
Publication date: 2020-08-18

Abstract

The utility model provides a tensile mould and double-end automatic stretching machine thereof, its double-end automatic stretching machine includes tensile mould, tensile dolly, is provided with the bell mouth that a plurality of diameters diminish gradually on the tensile piece of tensile mould, thereby the cutting rope passes the bell mouth and accomplishes tensile. The stretching trolley is used for clamping one end of the cutting rope, so that power is provided for stretching the cutting rope. The two stretching moulds are symmetrically arranged, and the two stretching trolleys are respectively distributed on two sides of the two stretching moulds. When the cutting rope pulling device is used, the cutting rope is respectively pulled by the stretching trolleys on the two sides so as to gradually pass through each conical hole, and the cutting rope is gradually pulled to a preset size. According to the invention, the cutting rope is pulled back and forth by the two stretching trolleys, and the cutting rope is pulled back and pulled by the tapered holes of the two stretching dies, so that the cutting rope can be rapidly processed, and the volume can be effectively reduced. The invention can realize automation, thereby greatly improving production efficiency, reducing cost and improving product quality.

Description

Stretching die and double-head automatic stretching machine thereof

Technical Field

The invention relates to the technology of initiating explosive device processing, in particular to the processing of a cutting rope, and particularly relates to a drawing die and a double-head automatic drawing machine thereof.

Background

The existing cutting rope processing technology is roughly as follows: the thick pipe (parameters are shown in table 1.1) filled with the medicament is tapered at two ends, passes through a conical drawing die, provides drawing force through mechanical power equipment, reduces the diameter of the thick pipe in sequence, finally reaches the required size, and the drawing frequency can reach 48 times at most. The method comprises the following steps:

firstly, one product is stretched once, and after the stretching is finished once, the product needs to be manually transferred, turned around and stretched again;

secondly, manually replacing the die each time;

manual clamping of the stretching trolley;

cooling with soap water and cleaning and lubricating;

the stretching speed needs to be manually adjusted each time;

sixthly, the movement position of the stretching trolley needs manual intervention and adjustment, and the product has a falling risk when being pulled out;

no safety protection is provided for the whole stretching process;

the maximum disposable mould number: 48-die.

TABLE 1.1

Serial number	Material	Original diameter (mm)	Wall thickness (mm)	Final draw diameter (mm)
					1	Lead (II)	ø30	3~5	Ø7~12
2	Silver (Ag)	Ø15	2~3	Ø2~2.5
					3	Copper (Cu)	Ø20	2	Ø5~6.5
4	Aluminium	Ø15	2~2.5	Ø4~4.5

Through combing the prior art, the problems of high labor intensity, poor product consistency, informatization island and the like in the prior processing process can be found, and the method specifically comprises the following steps:

the manual intervention links (pointing, die replacement, manual stretching clamping and manual stretching speed adjustment) are multiple, the labor intensity of workers is high, the efficiency is low, and the number of processed products per shift is not more than 12;

secondly, the degree of automation is low, manual speed regulation is performed in the stretching process, tension control is avoided, and the consistency of products is poor;

the informatization degree is low, and information such as parameters (tension and indexing) of the processing process, the processing progress of the product and the like cannot be shared and stored in time;

fourthly, the mold is manually replaced every time, and the mold needs to be manually replaced for many times, so that the efficiency is low, and the artificial risk of error is high;

the rolling head mechanism is completely exposed outside, so that safety risk exists;

sixthly, the rolling head mechanism has no rolling groove and no mark, and the guide device is easy to make mistakes.

Therefore, the inventor designs a double-end automatic stretching machine which can save space by two sets of dies for bidirectional reciprocating stretching. The volume of the equipment is reduced, and automation can be realized, so that the processing efficiency is improved, the labor cost is reduced, and the product percent of pass is ensured.

Disclosure of Invention

In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is to provide a drawing die and a double-head automatic drawing machine thereof, wherein the drawing die performs cold drawing of a cutting rope through a tapered hole.

In order to achieve the purpose, the invention provides a stretching die which comprises a stretching bottom plate, a stretching top plate, stretching side plates and a flow guide pipe, wherein the stretching side plates are respectively arranged at the upper end and the lower end of the stretching bottom plate and the upper end of the stretching top plate;

the lifting support plate is provided with an adjusting bottom plate, the number of the flow guide pipes is two, the other ends of the two flow guide pipes are respectively communicated and fixed with a connecting hole on the connecting cover in a sealing manner, the connecting cover is arranged on one end of the pull rope block, and a flow guide groove is arranged in the connecting cover; the stretching block is provided with a tapered hole, heat dissipation channels, a connecting channel and a liquid passing hole respectively, two ends of the liquid passing hole are communicated with the diversion trench and one end of each heat dissipation channel respectively, the heat dissipation channels are at least two and are arranged on the upper side and the lower side of the tapered hole respectively, and the two heat dissipation channels are communicated through the connecting channel.

Preferably, four lifting screws are provided, two lifting screws close to each other are respectively connected and driven through a second belt, two lifting screws far away from each other are connected and driven through a first belt, and one of the lifting screws and the lifting output shaft of the lifting motor is connected and driven through a third belt.

Preferably, the adjusting bottom plate is fixedly assembled with the adjusting top plate through a first vertical plate, a second vertical plate, a third vertical plate and a fourth vertical plate respectively, the first vertical plate, the second vertical plate and the third vertical plate are fixedly assembled with two retaining pipes respectively, one end of one retaining pipe is communicated with an outlet of a circulating pump, an inlet of the circulating pump is communicated with cooling liquid, and one end of the other retaining pipe is communicated with a device for storing the cooling liquid; one end of each of the two flow guide pipes is inserted into the other end of each of the two holding pipes and can axially slide and be hermetically assembled with the holding pipes.

Preferably, the tapered holes are gradually reduced in diameter from the end with the larger diameter to the end with the smaller diameter, and the tapered holes are distributed in a plurality and gradually reduced in diameter along the length direction of the stretching block.

Preferably, a stretching sliding rail is fixed at the bottom of the stretching block, the stretching sliding rail is clamped with a stretching sliding groove and can be assembled in a sliding mode, and the stretching sliding groove is arranged on the adjusting bottom plate; the top of the stretching block is further fixed with a driving block, the driving block and the switching screw rod are assembled in a threaded screwing mode, two ends of the switching screw rod are assembled with the third vertical plate and the fourth vertical plate in a circumferential rotating mode respectively, and one end of the switching screw rod penetrates out of the fourth vertical plate and then is connected and fixed with an output shaft of the switching motor.

Preferably, the side surface of the stretching block is fixedly assembled with the two abdicating plates through roller guide plates, and the roller guide plates are provided with roller guide holes corresponding to the conical holes one by one; the tops of the two yielding plates are respectively assembled and fixed with the roller top plate, a yielding motor frame is mounted on the roller top plate, a yielding motor is mounted on the yielding motor frame, a yielding output shaft of the yielding motor penetrates through a yielding driving plate and is screwed and assembled with the yielding driving plate through threads, the yielding driving plate is sleeved on a yielding guide shaft, two ends of the yielding guide shaft are respectively fixed on the yielding motor frame and the roller top plate, and the yielding driving plate can move along the axial direction of the yielding guide shaft; the abdicating drive plate is fixedly assembled with the abdicating slide block through the abdicating connecting plate;

the yielding plate is provided with a yielding chute, a yielding slide block is clamped and slidably mounted in the yielding chute, the yielding slide block and two ends of a roller rotating shaft can be circumferentially and rotatably assembled, the two roller rotating shafts are provided, two ends of the other roller rotating shaft are respectively and circumferentially and rotatably assembled with the yielding plate, one end of the roller rotating shaft penetrates through one of the yielding plates and then is fixedly connected with an output shaft of a roller motor through a coupler, the roller motor is mounted on a motor mounting plate, and the motor mounting plate is mounted on the yielding plate; and the roller rotating shaft is fixedly sleeved with a roller, and the roller is provided with roller grooves at the positions corresponding to the conical holes respectively.

Preferably, the diameter of a circle formed by the roller groove sections of the two rollers is not larger than the minimum diameter of the conical holes corresponding to the diameters; the two roller rotating shafts are respectively sleeved with transmission gears which are meshed with each other.

Preferably, an upper guide plate and a lower guide plate are respectively installed on one side of the roller, which is far away from the roller guide plate, and guide holes are formed in the positions, corresponding to the roller grooves, of the upper guide plate and the lower guide plate and used for guiding the cutting indexes into the corresponding roller grooves; the roller guide plate is divided into an upper roller guide plate and a lower roller guide plate, the lower roller guide plate and the lower guide plate are respectively fixed on the yielding plate, and the upper roller guide plate and the upper guide plate are respectively assembled and fixed with the yielding connecting plate through a second connecting block and a first connecting block.

Preferably, an extension pore plate is arranged on one side of the stretching block, which is far away from the roller guide plate, and drawing and holding holes with the same diameter as the extension pore plate are respectively arranged at the corresponding positions of the extension pore plate and the diameter minimum ends of the conical holes; the lifting support plate is further fixed with a support hole plate, support holes are formed in the support hole plate and are opposite to the clamping and pressing channel, and therefore the cutting rope is guided into the clamping and pressing channel.

The invention also discloses a double-head automatic drawing machine which is applied with the drawing die.

The invention has the beneficial effects that:

1. the drawing die can realize the gradual drawing of the cutting rope through the plurality of tapered holes with gradually changed diameters, so that the processing quality and the qualification rate of the cutting rope are ensured. The cutting rope is stretched in a reciprocating mode through the two sets of stretching dies, so that the size of equipment can be reduced, the machining efficiency can be effectively improved, and the problem of low efficiency caused by continuous manual replacement of the cutting rope is solved.

2. The stretching trolley can automatically detect the position of the cutting rope, then clamps the cutting rope, and provides power through the steel wire rope to draw the cutting rope. And the tension sensor is additionally arranged on the stretching trolley, so that the tension of the cutting rope during the drawing process can be detected, the processing parameters can be better controlled, and the product percent of pass can be ensured.

Drawings

Fig. 1-9 are schematic structural views of the present invention. Wherein fig. 3 and 6 are respectively cross-sectional views at two mutually perpendicular central planes where the axes of the cutting cord are located; FIGS. 4-5 are enlarged views at F1 and F2, respectively, of FIG. 3; fig. 7-8 are enlarged views at F3 and F4, respectively, of fig. 6.

Fig. 10-20 are schematic views of the structure of the drawing die. FIG. 12 is a cross-sectional view of the central plane of the axis of the holding tube; fig. 13 and 16 are sectional views of the yielding output shaft axis at two mutually perpendicular central planes respectively; fig. 18 is a schematic structural view of the stretching block.

Fig. 21-24 are schematic views of the structure of the stretching trolley. FIG. 23 is a cross-sectional view taken through the center plane of the locking rod axis; fig. 24 is an enlarged view of fig. 23 at F5.

Fig. 25-26 are schematic views of the internal structure of the stretching trolley.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Referring to fig. 1 to 24, the double-head automatic stretching machine of the embodiment includes a stretching die B and a stretching trolley a, wherein a plurality of tapered holes B531 with gradually decreasing diameters are formed in a stretching block of the stretching die B, and the cutting rope 100 passes through the tapered holes B531 to complete stretching. The stretching trolley A is used for clamping one end of the cutting rope, so that power is provided for stretching the cutting rope. The two stretching moulds B are symmetrically arranged, and the two stretching trolleys A are distributed on two sides of the two stretching moulds B respectively. When the cutting rope pulling device is used, the cutting rope is respectively pulled by the stretching trolleys A on the two sides, and then gradually passes through the conical holes B531, and the cutting rope is gradually pulled to a preset size.

The two stretching dies B and the rope pulling trolley A are both arranged on the bottom plate 300, the bottom plate 300 is further provided with a trolley guide rail 310, a shaft plate 320 and a bottom plate guide seat 330, the bottom plate guide seat 330 is provided with a bottom plate guide hole 331 enabling the cutting rope 100 to penetrate through, the trolley guide rail 310 is clamped with a trolley chute A133 at the bottom of the trolley seat A130 and can be assembled in a sliding mode, the shaft plate 320 and a wheel shaft A420 can be assembled in a circumferential rotating mode, a guide wheel A511 is sleeved on the wheel shaft A420, a steel wire rope A510 is wound outside the guide wheel A511, two ends of the steel wire rope A510 are respectively assembled and fixed with a front pull plate A131 and a rear pull plate A132 on the trolley seat A130, one wheel shaft A420 is connected with a trolley output shaft A261 of a trolley motor A260 through a coupler, the trolley motor A260 can drive the trolley output shaft A261 to rotate circumferentially after being started, and accordingly. A base through groove 301 is further formed in the bottom plate 300 corresponding to the steel wire rope a510, and the base through groove 301 is used for preventing the steel wire rope from contacting the base 300 to generate interference.

The trolley seat A130 is further provided with an electric box A250, a battery A251, a circuit board A252 and a wireless charging receiver A253 are respectively installed in the electric box A250, the wireless charging receiver A253 is opposite to the wireless charging transmitter A220, therefore, wireless charging can be carried out when the online charging receiver A253 is attached to the wireless charging transmitter A220, and the charged electric energy is stored in the battery after being processed by a charging and discharging circuit on the circuit board. Still install MCU on the circuit board, wireless module, MCU's signal end respectively with wireless module's signal end, micro-gap switch A230 and tension sensor A240's output communication are connected, wireless module is used for with external equipment wireless communication, this embodiment adopts bluetooth module, thereby when using, can pass through the information of MCU collection wireless mode and transmit to external equipment in real time, so that the operator knows the tension sensor atress condition, micro-gap switch is triggered the condition.

The top of the electrical box A250 is provided with a tension guide rail A180, the tension guide rail A180 is clamped with a tension chute A141 and is assembled in a sliding mode, the tension chute A141 is arranged on a tension base A140, and the front pull plate A131 and the tension base A140 are assembled and fixed with two ends of a tension sensor A240 respectively, so that when the steel wire rope pulls the front pull plate A131, tension input can be generated on the tension sensor A240, and tension borne by the cutting rope 100 during stretching can be detected. Still install chucking shell A150, front end plate A160 on pulling force base A140, be provided with first chucking spout A151, second chucking spout A152 in the chucking shell A150 respectively, and install in the chucking shell A150 and detect box A170, detect the inside hollow detection chamber A171 that is of box A170, detect chamber A171 and install micro-gap switch A230 on being close to preceding arm-tie A131 one side, and detect block A171 interior block, install trigger block A340 slidable, trigger block A340 is provided with the protruding A341 of trigger on the one side of the trigger end of micro-gap switch A230, the outside cover of the protruding A341 of trigger is equipped with trigger spring A520, the trigger spring A520 other end pastes tightly with the inner wall that detects chamber A171 to exert the thrust of moving to keeping away from the micro-gap switch direction to trigger block A340.

The cutting device is characterized in that clamping channels capable of enabling the cutting rope 100 to penetrate through are formed in the corresponding positions of the clamping shell A150, the front end plate A160 and the trigger block A340, the first clamping sliding groove A151 is internally clamped and slidably provided with a movable clamping block A320, the movable clamping block A320 is respectively provided with a clamping block part A321 and a guide part A322, the top of the movable clamping block A320 is provided with a magnet part (the upper part of the clamping block part A321 and the side of the clamping block part A321, far away from the guide part A322), the magnet part is made of a permanent magnet, the bottom of the guide part A322 penetrates through the fixed clamping block A330 and then is assembled and fixed with the connecting part A323, and the fixed clamping block A330 is installed at the bottom of the clamping channels.

The coupling part a323 is fitted into the third catching chute a153 to be slidably fitted thereto, and a catching return spring a530 is installed between the coupling part a323 and the bottom surface of the third catching chute a153, the catching return spring a530 serving to apply an upward-pushing elastic force to the coupling part a 323. So that the interval between the latch portion a321 and the fixed latch a330 is in the maximum state at the initial state.

The fixture block portion a321 and the fixed fixture block a330 are respectively provided with a first angular groove a3211 and a second angular groove a331, and the first angular groove a3211 and the second angular groove a331 are triangular groove bodies with openings corresponding to each other. When the cutting rope clamping device is used, the first angle groove A3211 and the second angle groove A331 are clamped at the upper end and the lower end of the cutting rope respectively, so that the cutting rope is clamped.

A plurality of locking grooves a3221 are formed in the side wall of the guide part a322, and the locking grooves a3221 are in snap fit with the locking protrusions a351 on the locking plate a350, so that the guide part a322 is locked, and at the moment, the guide part a322 cannot move. The locking plate A350 is fixed on one end of the locking rod A430, the locking plate A350 is clamped with the second clamping chute A152 and can be assembled in a sliding mode, the other end of the locking rod A430 is sleeved with the locking spring A540 and then is installed in the unlocking chute A191 and is assembled and fixed with the unlocking magnet block A313, the unlocking chute A191 is installed in the unlocking cover A190, and the unlocking cover A190 is installed on the clamping shell A150 and the front end plate A160. The locking spring a540 is used for applying an elastic force to the locking plate a350 to push the guide portion a322, and the locking protrusion a351 is provided with a slant portion a3511 and a straight portion a3512, respectively, and the slant portion a3511 is located above the straight portion a 3512. This arrangement enables the guide portion a322 to move downward by driving the locking plate a350 to slide inward of the second catching chute a152 against the elastic force of the locking spring a540 through the slope portion a3511 when the guide portion a322 moves downward. While the straight portion a3512 prevents the guide portion a322 from moving upward, thereby gradually moving the jaw portion a321 toward the fixed jaw a330 to grip the cutting cord. After the cutting cable is clamped, the cutting cable can be pulled through the steel wire rope, so that the cutting cable is pulled.

An auxiliary support A110 is further installed on the bottom plate 300 close to the stretching mold B, a wireless charging transmitter A220 and an unlocking soft iron block A312 are respectively installed on two sides of the auxiliary support A110, a locking soft iron block A311 is installed on the top of the auxiliary support A110, the unlocking soft iron block A312 and the locking soft iron block A311 are respectively fixed on an unlocking soft iron column A412 and a locking soft iron column A411, a second coil A212 and a first coil A211 are respectively sleeved outside the unlocking soft iron column A412 and the locking soft iron column A411, a magnetic field is generated after the second coil A212 is connected with direct current, so that the unlocking soft iron column A412 and the locking soft iron column A411 are magnetized, the unlocking soft iron block A312 generates a magnetic field with the same magnetic field as that of the unlocking magnet block A313, namely opposite in opposite polarity, the unlocking soft iron block A312 generates a magnetic attraction force for enabling the unlocking magnet block A313 to overcome the elastic force of a locking spring to move towards the unlocking soft iron block A, and accordingly the locking plate A350 is separated from the guiding part A322, the guide portion a322 moves upward by the elastic force of the clamping return spring a530, thereby moving the movable jaw upward to release the clamping of the cutting cord. The first coil a211 is magnetized by the upper soft iron block a311 after being connected with direct current, so as to generate a magnetic field opposite to the magnetic field of the magnet part, that is, opposite to the same pole, to apply repulsive magnetic force to the magnet part, thereby driving the movable clamping block a320 to move downwards against the elastic force of the clamping return spring a530, so as to clamp the cutting rope. In this embodiment, the field intensity of the upper locking soft iron block a311 can be controlled according to the different diameters of the cutting rope after being processed, so as to control the repulsive magnetic force applied to the movable fixture block a320, thereby ensuring that the cutting rope can be clamped and not crushed.

The unlocking soft iron column A412 and the locking soft iron column A411 are respectively installed in the first outer cover A121 and the second outer cover A122, and the first outer cover A121 and the second outer cover A122 are respectively installed on the auxiliary support A110. When the cutting cable is used, the cutting cable firstly enters the clamping and pressing channel and then moves towards the trigger block A340, so that the end face of the cutting cable is tightly pressed against the trigger block, the cutting cable continuously moves, the trigger block is driven to move towards the micro switch until the micro switch is triggered, the micro switch inputs a signal to the MCU after being triggered, the MCU sends a locking instruction to the outer wall equipment through the wireless module, and the external equipment controls the first coil to be powered on, so that the cutting cable is clamped. Then a trolley motor is started, and the trolley seat is pulled by a steel wire rope to move towards the direction of the trolley motor so as to realize the drawing of the cutting rope. After drawing is finished, the cutting rope penetrates out of the drawing die B, then the position of the drawing die B is adjusted, the trolley motor is rotated reversely, so that the cutting rope is driven to move reversely to be installed in the second-size conical hole B531, then the cutting rope penetrates through the drawing die and enters the other drawing trolley A, drawing in the reverse direction is finished through the drawing trolley A, and therefore drawing in the other size is finished, and reciprocating is carried out, and reciprocating drawing of the cutting rope is achieved. In this embodiment, a holding support plate may be disposed on a side of the drawing die B close to the drawing trolley a, the holding support plate is fixed on the bottom plate 300, and when the cutting rope is pulled out of the rope drawing die, the holding support plate supports an end of the cutting rope far from the end of the drawing trolley clamped with the cutting rope, so as to prevent the end of the cutting rope from falling and causing a problem of manual access. The cutting cable can be effectively guided by arranging the holding support hole assembled with the cutting cable on the holding support plate, so that the cutting cable can directly enter the larger diameter end of the second-size conical hole under the action of the holding support hole when reversely entering the stretching die, and automatic feeding is completed. When the stretching trolley A moves reversely into the auxiliary bracket A110, the wireless charging transmitter starts to charge the battery, and the second coil is electrified, so that the clamping of the cutting rope is released. But throughout the stretching process. The tension sensor always detects the tension of the cutting rope, and the tension of the cutting rope can be adjusted by adjusting the power of the trolley motor. Therefore, the process precision is greatly improved, the process is flexible, and the processing quality can be effectively ensured.

The stretching die B comprises a stretching bottom plate B111, a stretching top plate B112 and stretching side plates B113, wherein the stretching side plates B113 are respectively installed at the upper end and the lower end of the stretching bottom plate B111 and the upper end and the lower end of the stretching top plate B112, at least two lifting screws B210 are installed between the stretching bottom plate B111 and the stretching top plate B112, and the lifting screws B210 penetrate through the lifting support plate B120 and are assembled with the lifting support plate B120 in a screwing mode through threads. In this embodiment, four lifting screws B210 are provided, two lifting screws B210 close to each other (in the width direction of the lifting pallet) are respectively connected and driven by a second belt B420, two lifting screws B210 far from each other (in the length direction of the lifting pallet) are connected and driven by a first belt B410, and one lifting screw B210 is connected and driven with the lifting output shaft of the lifting motor B310 by a third belt B430. So that when the lifting motor B310 is started, the four lifting screws B210 rotate synchronously to smoothly drive the lifting pallet B120 to move along the axial direction thereof. In this embodiment, the first belt B410, the second belt B420, and the third belt B430 are connected to the lifting screw B210 and the lifting output shaft in a manner that belt wheels are sleeved on the lifting screw B210 and the lifting output shaft, and then the first belt B410, the second belt B420, and the third belt B430 are connected to form a belt transmission mechanism through the corresponding first belt B410, the second belt B420, and the third belt B430, which are common structures.

An adjusting bottom plate B130 is installed on the lifting supporting plate B120, the adjusting bottom plate B130 is fixedly assembled with an adjusting top plate B140 through a first vertical plate B141, a second vertical plate B142, a third vertical plate B143 and a fourth vertical plate B144, the first vertical plate B141, the second vertical plate B142 and the third vertical plate B143 are fixedly assembled with two retaining tubes B220, one end of one retaining tube B220 is communicated with an outlet of a circulating pump, an inlet of the circulating pump is communicated with cooling liquid, and one end of the other retaining tube B220 is communicated with a device for storing the cooling liquid, so that the cooling liquid can be circularly input into the two retaining tubes B220 when the circulating pump is started. One end of each of the two flow guide pipes B230 is inserted into the other end of each of the two retaining pipes B220 and can axially slide and be hermetically assembled with the retaining pipes B220, the other end of each of the two flow guide pipes B230 is hermetically communicated and fixed with a connecting hole B562 on a connecting cover B560, the connecting cover B560 is installed on one end of the stay rope block B530, and a flow guide groove B561 is formed in the connecting cover B560; the stretching block B530 is provided with a tapered hole B531, a heat dissipation channel B533, a connection channel B532 and a liquid passing hole B534 respectively, two ends of the liquid passing hole B534 are communicated with the diversion trench B561 and one end of the heat dissipation channel B533 respectively, the heat dissipation channel B533 is provided with at least two heat dissipation channels which are arranged on the upper side and the lower side of the tapered hole B531 respectively, and the two heat dissipation channels B533 are communicated with each other through the connection channel B532. When the circulating pump is started, the cooling liquid can continuously enter the heat dissipation channel B533 from one of the flow guide pipes B230 and then flow out from the other flow guide pipe B230 so as to realize the rapid cooling of the stretching block, thereby ensuring that the temperature of the stretching block is within the process design range (generally not more than 70 ℃) during processing.

The diameter of the conical hole B531 gradually decreases from the end with the larger diameter to the end with the smaller diameter, so that the cutting rope can easily penetrate through the end with the larger diameter, then extrusion is formed when the cutting rope passes through the end with the smaller diameter, and then a cold drawing processing mode is formed by drawing the cutting rope. The tapered holes B531 are plural and distributed along the length direction of the drawing block B530 with a diameter gradually decreasing. This design allows the cutting cord to be drawn through different tapered holes multiple times.

A stretching sliding rail B550 is fixed at the bottom of the stretching block B530, the stretching sliding rail B550 is clamped with the stretching sliding groove B131 and can be assembled in a sliding mode, and the stretching sliding groove B131 is arranged on the adjusting bottom plate B130. The top of the stretching block B530 is also fixedly provided with a driving block B570, the driving block B570 is assembled with a switching screw B240 in a screwing mode through threads, two ends of the switching screw B240 are assembled with a third vertical plate B143 and a fourth vertical plate B144 in a circumferential rotating mode respectively, one end of the switching screw B240 penetrates through the fourth vertical plate B144 and then is fixedly connected with an output shaft of a switching motor B340 through a coupler, the switching motor B340 can drive the switching screw B240 to rotate circumferentially after being started, and therefore the stretching block B530 is driven to move axially to adjust different taper holes B530 to be opposite to the stretching trolley, and stretching through different taper holes is achieved. The switching motor B340 is a servo motor, so that the stroke of the stretching block B530 can be accurately controlled.

The side surface of the stretching block B530 is fixedly assembled with the two abdicating plates B630 through the roller guide plate B520, and the roller guide plate B520 is provided with roller guide holes corresponding to the tapered holes one by one, so that the cutting rope can pass through the roller guide holes; the tops of the two yielding plates B630 are fixedly assembled with the roller top plate B620 respectively, the yielding motor frame B610 is installed on the roller top plate B620, the yielding motor frame B610 is provided with the yielding motor B320, the yielding output shaft B321 of the yielding motor B320 penetrates the yielding drive plate B640 and is assembled with the yielding drive plate B640 in a threaded screwing mode, the yielding drive plate B640 is sleeved on the yielding guide shaft B250, the two ends of the yielding guide shaft B250 are fixed on the yielding motor frame B610 and the roller top plate B620 respectively, and the yielding drive plate B640 can move along the axial direction of the yielding guide shaft B250.

Let and be provided with the spout B631 of stepping down on the board B630, the slider B660 of stepping down is installed to block, slidable in the spout B631 of stepping down, but the assembly of stepping down slider B660 and a roller pivot B260 both ends circumferencial rotation, roller pivot B260 has two, but another roller pivot B260 both ends respectively with step down board B630 circumferencial rotation assembly and this roller pivot B260 one end wear out one of them board B630 of stepping down behind and pass through the coupling joint with the output shaft of roller motor B330 fixed, roller motor B330 installs on motor mounting panel B670, and motor mounting panel B670 is installed and is being let on board B630. The roller rotating shaft B260 is sleeved and fixed with rollers B450, roller grooves B451 are respectively arranged at the positions of the rollers B450 corresponding to the conical holes B531, and the diameter of a circle formed by the sections of the roller grooves B451 of the two rollers B450 is not larger than the minimum diameter of the corresponding conical holes B531. When in use, one end of the cutting rope to be pulled is rotatably rolled through the two roller grooves B451, so that the end of the cutting rope can pass through the corresponding conical hole, and the later pulling is facilitated. And the cutting rope can be conveyed in an auxiliary way during rolling.

The two roller rotating shafts B260 are also respectively sleeved with transmission gears B440 which are meshed with each other, and when the two roller rotating shafts B260 rotate synchronously in opposite directions through the transmission gears. The yielding driving plate B640 is further fixedly connected with the yielding slider B660 through a yielding connecting plate B641. After the stretching trolley A used for drawing and the cutting rope are clamped, the abdicating motor is started, so that the abdicating output shaft is driven to rotate, the abdicating output shaft drives the abdicating drive plate B640 to move upwards through threads, the abdicating slide block B660 and the roller B450 positioned above the abdicating drive plate B are driven to move upwards, the two rollers do not roll the cutting rope any more, and the cutting rope is in a drawing processing state. In this embodiment, the roller B450 only performs the functions of heading and conveying.

An upper guide plate B512 and a lower guide plate B511 are respectively arranged on one side of the roller B450, which is far away from the roller guide plate B520, an introduction hole B501 is arranged at the position of the upper guide plate B512 and the lower guide plate B511, which corresponds to the roller groove B451, and the introduction hole B501 is used for guiding the cutting index into the corresponding roller groove B451. In this embodiment, the roller guide plate B520 is divided into an upper roller guide plate and a lower roller guide plate, the lower roller guide plate and the lower guide plate B511 are respectively fixed on the abdicating plate B630, and the upper roller guide plate and the upper guide plate B512 are respectively assembled and fixed with the abdicating connecting plate B641 through the second connecting block B652 and the first connecting block B651, so that the roller B450, the upper roller guide plate and the upper guide plate B512 located above can move up synchronously, and the interference of the roller B450, the upper roller guide plate and the upper guide plate B512 located above on the movement of the cutting rope can be prevented.

An extension orifice plate B540 is installed on one side, away from the roller guide plate B520, of the stretching block B530, drawing and holding holes B541 with the same diameter as the extension orifice plate B540 are respectively arranged at the positions, corresponding to the diameter minimum ends of the tapered holes, of the extension orifice plate B540, the drawing and holding holes B541 are used for enabling a cutting rope to continuously keep the drawing shape of the cutting rope after the cutting rope passes through the tapered holes through the drawing and holding holes B541, and therefore the drawing effect is guaranteed, and the later rebound rate is reduced.

Preferably, a supporting hole plate B150 is further fixed on the lifting support plate B120, a supporting hole B151 is formed in the supporting hole plate B150, and the supporting hole B151 is opposite to the clamping and pressing channel, so that the cutting rope is guided into the clamping and pressing channel.

Referring to fig. 3, in the present embodiment, the drawing carriage a and the drawing die B on the left side are respectively named as a first number, and the right side is named as a second number, and their respective technical terms are distinguished by the first number and the second number.

When the lifting device is used, the first lifting motor B310 is started firstly, so that the first lifting supporting plate B120 moves upwards until the first supporting hole B151 moves upwards to be coaxial with the second conical hole B531 corresponding to the first supporting hole B; starting a second roller motor B330, enabling the cutting rope 100 to pass through a second roller groove B451 and then enter a second conical hole B531, and enabling a second roller to prick and convey the cutting rope, so that the cutting rope passes through the second conical hole B531 and a support hole B151 and then enters a first clamping and pressing channel until a first microswitch is triggered, and a first stretching trolley clamps the cutting rope; then the second roller motor stops running, the second yielding motor is started, and the second yielding motor moves the second roller above the second roller upwards so as to loosen the rolling of the cutting rope; starting a trolley motor A260, driving a trolley seat to move towards the trolley motor A260 by a steel wire rope I, and drawing a cutting rope; and simultaneously starting the second circulating pump.

After drawing is finished (taking the length of a cutting rope after the stroke of a motor of a first trolley reaches drawing as a standard), two ends of the cutting rope are respectively positioned on a first drawing trolley A and a first holding support plate; then respectively starting a first lifting motor and a second lifting motor to enable the states of the first drawing die and the second drawing die to be interchanged; starting a first switching motor to enable a first conical hole to be used to be opposite to or coaxial with a second supporting hole B151; starting a roller motor B330 and a circulating pump, and reversely moving a stretching trolley A, so that the cutting rope is fed into a roller to be bundled and then fed into a conical hole, and then the cutting rope penetrates out of a support hole B151 and then enters a clamping and pressing channel II, and the cutting rope is clamped at the end by the stretching trolley II. Stopping the first roller motor, and driving the first yielding motor to move the first roller above; and starting a second trolley motor, continuously drawing the cutting rope through the first conical hole by using a second stretching trolley until the cutting rope penetrates out of the second supporting hole B151 and enters the second retaining support hole, and stopping the second trolley motor. And the height states of the first stretching die and the second stretching die are adjusted again, a second switching motor is started, the other second conical hole is coaxial with or just opposite to the first supporting hole B151, the second idler wheel is reset by reversing the second abdicating motor, a second idler wheel motor is started, the second stretching trolley moves reversely, the cutting rope is input into the other idler wheel groove B451 of the second idler wheel again for secondary processing, and the operation is repeated. Therefore, the cutting rope can be stretched in a back-and-forth drawing mode, the efficiency can be increased, and the size of the equipment can be reduced.

The invention is not described in detail, but is well known to those skilled in the art.

The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.

Claims

1. A drawing die is characterized in that: the lifting device comprises a stretching bottom plate, a stretching top plate, stretching side plates and a flow guide pipe, wherein the stretching side plates are respectively arranged at the upper end and the lower end of the stretching bottom plate and the upper end and the lower end of the stretching top plate;

2. The drawing die of claim 1, wherein: the lifting screw rods are four, two lifting screw rods which are close to each other are connected through a second belt for transmission, two lifting screw rods which are far away from each other are connected through a first belt for transmission, and one of the lifting screw rods is connected with a lifting output shaft of the lifting motor through a third belt for transmission.

3. The drawing die of claim 1, wherein: the adjusting bottom plate is fixedly assembled with the adjusting top plate through a first vertical plate, a second vertical plate, a third vertical plate and a fourth vertical plate respectively, the first vertical plate, the second vertical plate and the third vertical plate are fixedly assembled with two retaining pipes respectively, one end of one retaining pipe is communicated with an outlet of a circulating pump, an inlet of the circulating pump is communicated with cooling liquid, and one end of the other retaining pipe is communicated with a device for storing the cooling liquid; one end of each of the two flow guide pipes is inserted into the other end of each of the two holding pipes and can axially slide and be hermetically assembled with the holding pipes.

4. The drawing die of claim 1, wherein: the taper hole is gradually reduced from the end with the larger diameter to the end with the smaller diameter, and the taper holes are distributed in a plurality of gradually reduced diameters along the length direction of the stretching block.

5. The drawing die of claim 4, wherein: a stretching sliding rail is fixed at the bottom of the stretching block, the stretching sliding rail is clamped with a stretching sliding groove and can be assembled in a sliding mode, and the stretching sliding groove is formed in the adjusting bottom plate; the top of the stretching block is further fixed with a driving block, the driving block and the switching screw rod are assembled in a threaded screwing mode, two ends of the switching screw rod are assembled with the third vertical plate and the fourth vertical plate in a circumferential rotating mode respectively, and one end of the switching screw rod penetrates out of the fourth vertical plate and then is connected and fixed with an output shaft of the switching motor.

6. The drawing die of claim 1, wherein: the side surface of the stretching block is fixedly assembled with the two abdicating plates through the roller guide plate, and the roller guide plate is provided with roller guide holes which correspond to the conical holes one by one; the tops of the two yielding plates are respectively assembled and fixed with the roller top plate, a yielding motor frame is mounted on the roller top plate, a yielding motor is mounted on the yielding motor frame, a yielding output shaft of the yielding motor penetrates through a yielding driving plate and is screwed and assembled with the yielding driving plate through threads, the yielding driving plate is sleeved on a yielding guide shaft, two ends of the yielding guide shaft are respectively fixed on the yielding motor frame and the roller top plate, and the yielding driving plate can move along the axial direction of the yielding guide shaft; the abdicating drive plate is fixedly assembled with the abdicating slide block through the abdicating connecting plate;

7. The drawing die of claim 6, wherein: the diameter of a circle formed by the sections of the roller grooves of the two rollers is not more than the minimum diameter of the conical holes corresponding to the diameter; the two roller rotating shafts are respectively sleeved with transmission gears which are meshed with each other.

8. The drawing die of claim 7, wherein: an upper guide plate and a lower guide plate are respectively arranged on one side of the roller, which is far away from the roller guide plate, and guide holes are arranged at the positions of the upper guide plate and the lower guide plate, which correspond to the roller grooves and are used for guiding the cutting indexes into the corresponding roller grooves; the roller guide plate is divided into an upper roller guide plate and a lower roller guide plate, the lower roller guide plate and the lower guide plate are respectively fixed on the yielding plate, and the upper roller guide plate and the upper guide plate are respectively assembled and fixed with the yielding connecting plate through a second connecting block and a first connecting block.

9. The drawing die of claim 1, wherein: an extension orifice plate is arranged on one side of the stretching block, which is far away from the roller guide plate, and drawing and holding holes with the same diameter as the extension orifice plate are respectively arranged at the corresponding positions of the extension orifice plate and the minimum diameter ends of the conical holes; the lifting support plate is further fixed with a support hole plate, support holes are formed in the support hole plate and are opposite to the clamping and pressing channel, and therefore the cutting rope is guided into the clamping and pressing channel.

10. The utility model provides an automatic stretcher of double-end, characterized by: use is made of a drawing die according to any of claims 1 to 9.