Active and passive combined cold rolling mill

Abstract

The present invention relates to the technical field of metal material processing equipment, and in particular to an active and passive combined cold rolling mill, which comprises a feeding device for feeding wires, a front tension control regulator, a positioning gauge round die box, a first active flat rolling cold rolling mill, a first tension control regulator, N+1 groups of cold rolling forming units, a second passive cross cold rolling mill, a third active flat rolling cold rolling mill, a third tension control regulator, M+1 groups of special-shaped passive cold rolling units, a rear tension control regulator, and a finished product winding device for winding wire products; the cold rolling forming units all comprise a first passive cross cold rolling mill, a second active flat rolling cold rolling mill, and a second tension control regulator, which are arranged in sequence along the wire movement direction; the special-shaped passive cold rolling units all comprise a first special-shaped passive cross cold rolling mill, a second special-shaped passive cross cold rolling mill, and a power unit for pulling the wires, which are arranged in sequence along the wire movement direction.

Description

Technical Field

[0001] The invention relates to the technical field of metal material processing equipment, in particular to an active and passive combined cold rolling mill. Background Art

[0002] At present, the production of precision special-shaped metal wires or precision metal flat wires is achieved by cold rolling. Among them, precision special-shaped metal wires or precision metal flat wires with a width-to-thickness ratio of less than 2 can be directly formed by a special-shaped cross rolling mill; the common method for precision special-shaped metal wires or precision metal flat wires with a width-to-thickness ratio of ≧2 on the market is: flat rolling mills are used to flatten the flat wires into flat wires, and the flat wires are then formed into special-shaped metal wires or metal flat wires by die drawing. The processing is divided into more than two processes. The disadvantages of this processing method are low efficiency, poor precision, and high cost;

[0003] At present, the high-precision metal wires used in China are basically imported from abroad. The main reason is that the dimensional accuracy of most existing domestic equipment cannot meet the product requirements. Therefore, the market urgently needs to develop a device for producing precision special-shaped metal wires or precision metal flat wires to meet market demand.

[0004] The Chinese utility model patent with application number CN110694792A and publication date of January 17, 2020, discloses a production line for alloy anchor wire profiles, including a first tension device and an equipment housing, wherein the equipment housing is provided with a cold rolling device, a first laser sensor, a second tension device, a hole-type cold rolling device, a pre-stretching forming device, a third tension device, a cleaning device, a final forming device, a straightening wheel set, a guide device, a fourth tension device, a wire clamping device, a wire take-up device and an electromagnetic power supply, wherein the second tension device is provided with a receiving wheel and two receiving wheels; the groove of the receiving wheel has a receiving ring in contact with the anchor wire; the receiving wheel has a receiving groove, and the inner wall of the receiving groove has a receiving ring, and the receiving ring is connected to a plurality of electromagnetic coils, and the receiving ring and the electromagnetic coil are electrically connected to the electromagnetic power supply, and one magnetic pole of all electromagnetic coils faces the receiving ring, and the other magnetic pole faces the center of the receiving wheel; the receiving ring is made of conductive and non-magnetic material and does not contact the anchor wire, so as to ensure that the wire will not be broken by metal debris after tensioning. The production line disclosed in this patent still cannot meet the production requirements of high-precision metal wires. Summary of the invention

[0005] In order to solve the problems mentioned in the background technology that the dimensional accuracy of metal wires processed by most existing domestic equipment cannot meet the high-precision requirements, the equipment processes are numerous, the cost is high and the efficiency is low; the present invention is aimed at the cold rolling forming processing of special-shaped metal wires or precision metal flat wires with a width-to-thickness ratio greater than 2, and provides an active and passive combined cold rolling machine, which combines multiple processing steps to produce high-precision precision special-shaped metal wires or precision metal flat wires at high speed.

[0006] The present invention provides an active and passive combined cold rolling mill, which comprises a feeding device for feeding wires, a front tension control regulator, a positioning gauge round die box, a first active flat rolling cold rolling mill, a first tension control regulator, N+1 groups of cold rolling forming units, a second passive cross cold rolling mill, a third active flat rolling cold rolling mill, a third tension control regulator, M+1 groups of special-shaped passive cold rolling units, a rear tension control regulator and a finished product winding device for winding wire products; each group of cold rolling forming units comprises a first passive cross cold rolling mill, a second active flat rolling cold rolling mill and a second tension control regulator, which are arranged in sequence along the wire moving direction, and N is greater than or equal to zero; each group of special-shaped passive cold rolling units comprises a first special-shaped passive cross cold rolling mill, a second special-shaped passive cross cold rolling mill and a power unit for pulling the wires, which are arranged in sequence along the wire moving direction, and M is greater than or equal to zero.

[0007] In one embodiment, it also includes a controller; the first active flat rolling cold rolling mill, the second active flat rolling cold rolling mill and the third active flat rolling cold rolling mill are all electrically connected to the controller, so that the controller controls the operation of the first active flat rolling cold rolling mill, the second active flat rolling cold rolling mill and the third active flat rolling cold rolling mill.

[0008] In one embodiment, a straightening guide for adjusting the straightness of the wire is also included;

[0009] The straightening guide is arranged between the unloading device and the front tension control regulator.

[0010] In one embodiment, the front tension control regulator, the first tension control regulator, the second tension control regulator, the third tension control regulator and the rear tension control regulator all include a cross base and a fixed guide wheel, a movable guide wheel and a lifting mechanism arranged on the cross base;

[0011] The cross base includes a cross bar frame and a vertical bar frame. Fixed guide wheels on the same horizontal line are respectively installed at both ends of the cross bar frame. The movable guide wheel is connected to the vertical bar frame through a lifting mechanism, so that the lifting mechanism drives the movable guide wheel to move up and down.

[0012] In one embodiment, it further includes a first leveler and a second leveler for adjusting the straightness of the shaped wire;

[0013] The first leveler is arranged at the front end of the third tension control regulator, and the second leveler is arranged at the rear end of the second special-shaped passive cross cold rolling mill.

[0014] In one embodiment, a finished wiring arrangement device for arranging wiring cables is also included;

[0015] The finished product wire arrangement device is installed between the post-tension control regulator and the finished product winding device, so that the wire transmitted from the post-tension control regulator is wound to the finished product winding device after being arranged and positioned by the wire arrangement rod of the finished product wire arrangement device.

[0016] In one embodiment, the finished product winding device is a reciprocating active off-axis I-wheel material receiving machine;

[0017] The finished product winding device includes a finished product curling base, an I-shaped curling wheel and a material receiving motor; the I-shaped curling wheel is sleeved on a rotating shaft; the rotating shaft is arranged on a bearing seat of the finished product curling base; the material receiving motor is connected to the rotating shaft through a coupling, so that the material receiving motor can drive the I-shaped curling wheel to rotate and reel the wire onto the I-shaped curling wheel.

[0018] In one embodiment, the power unit is a double-drum traction machine.

[0019] In one embodiment, the finished product winding device, the power unit and the unwinding device are all electrically connected to the controller.

[0020] In one embodiment, the front end of the straightening guide is also provided with a positioning guide wheel for guiding and positioning the wire.

[0021] The present invention makes full use of the advantages of active flat rolling and passive cross cold rolling mills, combines multiple processing steps to enable efficient production of precision special-shaped metal wires or precision metal flat wires. Compared with the prior art, the active and passive combined cold rolling mill provided by the present invention has the following advantages: 1. High efficiency: round wire is fed into a single process and formed at high speed; 2. High precision: by combining active flat rolling and passive cross cold rolling mills, the obtained wire can reach μm-level precision; 3. Realize the growth of complex cross-section special-shaped metal wires; 4. Low cost: high-speed production and a one-stop single process greatly reduce production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0023] Figure 1 A schematic diagram of the structure of an embodiment of the present invention;

[0024] Figure 2 A schematic structural diagram of a straightening guide in an embodiment of the present invention;

[0025] Figure 3A schematic diagram of the side structure of an upper straightening wheel in a straightening guide provided in an embodiment of the present invention;

[0026] Figure 4 A schematic diagram of the structure of a tension control regulator in one embodiment of the present invention;

[0027] Figure 5 A schematic structural diagram of an active flat rolling cold rolling mill in an embodiment of the present invention;

[0028] Figure 6 A schematic diagram of the structure of a leveler in one embodiment of the present invention;

[0029] Figure 7 A schematic diagram of the structure of a positioning gauge circular mold box in an embodiment of the present invention;

[0030] Figure 8 A schematic diagram of the structure of a finished product wiring device and a controller in an embodiment of the present invention;

[0031] Fig. 9 A front view of a power unit in one embodiment of the present invention;

[0032] Fig.10 A partial schematic diagram of a power unit in an embodiment of the present invention Figure 1 ;

[0033] Fig.11 A partial schematic diagram of a power unit in an embodiment of the present invention Figure 2 ;

[0034] Fig.12 This is a schematic structural diagram of a finished product winding device in an embodiment provided by the present invention.

[0035] Reference numerals:

[0036] 1 Unloading device 2 Straightening guide 3 Pre-tension control regulator

[0037] 4 Positioning gauge round die box 5 First active flat rolling cold rolling mill 6 First tension control regulator

[0038] 7 Cold rolling forming unit 8 Second passive cross cold rolling mill 9 Third active flat rolling cold rolling mill

[0039] 10 First leveler 124 power unit

[0040] 11 The third tension control regulator 12 Special-shaped passive cold rolling unit 13 Post-tension control regulator

[0041] 14 Finished product arranging device 15 Controller 16 Finished product winding device

[0042] 71 first passive cross cold rolling mill 72 second active flat cold rolling mill 73 second tension control regulator

[0043] 121 First special-shaped passive cross cooling 122 Second special-shaped passive cross cooling 123 Second leveler rolling mill

[0044] 110 upper straightening wheel 120 lower straightening wheel 130 positioning guide wheel

[0045] 310 cross base 320 fixed guide wheel 330 dynamic guide wheel

[0046] 340 lifting mechanism 341 rotating connecting rod 342 dynamic guide wheel driving mechanism

[0047] 520 Roller group 510 Roller seat 530 Roller drive mechanism

[0048] 102 upper leveling roller system 102 lower leveling roller system 101 frame

[0049] 1241 power base 1242 first traction wheel 1243 second traction wheel

[0050] 1244 roller traction motor 1245 drive shaft 1246 first sprocket

[0051] 1247 driven shaft 1248 second sprocket 1249 connecting rod

[0052] 1610 Finished product curling base 1620 I-shaped curling wheel 1630 Receiving motor

[0053] 1640 shaft DETAILED DESCRIPTION

[0054] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0055] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0056] like Figure 1-12 As shown in the embodiment, the present invention provides an active and passive combined cold rolling mill, which includes a discharge device 1 for wire discharge arranged in sequence from front to back along the wire movement direction, a front tension control regulator 3, a positioning gauge round die box 4, a first active flat rolling cold rolling mill 5, a first tension control regulator 6, an N+1 group of cold rolling forming units 7, a second passive cross cold rolling mill 8, a third active flat rolling cold rolling mill 9, a third tension control regulator 11, an M+1 group of special-shaped passive cold rolling units 12, and a rear tension control regulator 1 3 and a finished product winding device 16 for winding the finished wire product; each group of cold rolling forming units 7 includes a first passive cross cold rolling mill 71, a second active flat rolling cold rolling mill 72 and a second tension control regulator 73 arranged in sequence along the moving direction of the wire, N is greater than or equal to zero; each group of special-shaped passive cold rolling units 12 includes a first special-shaped passive cross cold rolling mill 121, a second special-shaped passive cross cold rolling mill 122 and a power unit 124 for pulling the wire, M is greater than or equal to zero.

[0057] Specifically, the working process of the active and passive combined cold rolling mill provided by the present invention is as follows: the metal wire containing the metal wire raw material is trapped on the unloading device 1, and the metal wire is pulled out, and sequentially passes through the front tension control regulator 3, the positioning gauge round die box 4, the first active flat rolling cold rolling mill 5, the first tension control regulator 6, the N+1 group of cold rolling forming units 7 (which sequentially passes through the first passive cross cold rolling mill 71, the second active flat rolling cold rolling mill 72 and the second tension control regulator 73), the second passive cross cold rolling mill 8, the third active flat rolling cold rolling mill 9, the third tension control regulator 11, the M+1 group of special-shaped passive cold rolling units 12 (which sequentially passes through the first special-shaped passive cross cold rolling mill 121, the second special-shaped passive cross cold rolling mill 122, and the power unit 124), the rear tension control regulator 13, and finally fixed on the finished product winding device 16;

[0058] During specific operation, the metal wire is discharged through the discharge device 1, and the metal wire passes through the front tension control regulator 3, the positioning gauge circular die box 4 in sequence, and enters the first active flat rolling cold rolling mill 5 and the first tension control regulator 6 in sequence; wherein, the front tension control regulator 3 controls the speed of the metal wire by controlling the tension adjustment movable guide wheel 330 to reciprocate up and down to press the metal wire, thereby adjusting the discharge speed of the discharge device 1; the positioning gauge circular die box 4 regularizes the incoming material, and positions the flat rolling wheel position of the first active flat rolling cold rolling mill 5, and provides a stable reverse tension to the first active flat rolling cold rolling mill 5, thereby ensuring the dimensional accuracy and straightness of the material after rolling by the first active flat rolling cold rolling mill 5, and the first active flat rolling cold rolling mill 5 rolls the thickness of the metal wire, and the first tension control regulator 6 at its rear end controls the speed of the metal wire, thereby adjusting the speed of the first active flat rolling cold rolling mill 5;

[0059] Then the wire rod enters the N+1 group of cold rolling forming units 7, namely, passes through the first passive cross cold rolling mill 71, the second active flat rolling cold rolling mill 72 and the second tension control regulator 73 in sequence; wherein, the first passive cross cold rolling mill 71 fine-tune the width of the metal wire rod, and the first passive cross cold rolling mill 71 fine-tune the width of the wire rod to ensure the width accuracy and straightness of the material after each flat rolling, and provide a stable reverse tension for each flat rolling; then the second active flat rolling cold rolling mill 72 rolls the thickness of the metal wire rod, and the second tension control regulator 73 at the rear end thereof adjusts the rolling speed of the second active flat rolling cold rolling mill 72 by controlling the speed of the metal wire rod;

[0060] The metal wire after being rolled by the cold rolling forming unit 7 then passes through the second passive cross cold rolling mill 8, the third active flat rolling cold rolling mill 9, the third tension control regulator 11 and the M+1 group of special-shaped passive cold rolling mills 12 (passing through the first special-shaped passive cross cold rolling mill 121, the second special-shaped passive cross cold rolling mill 122, and the power unit 124 in sequence); wherein the power unit 124 provides power for the traction of the metal wire, the second passive cross cold rolling mill 8 fine-tune the width of the metal wire, and the first passive cross cold rolling mill 71 fine-tune the wire width to ensure that each flat rolling The width accuracy and straightness of the rear wire are improved, and a stable reverse tension is provided for each flat rolling; then the third active flat rolling cold rolling mill 9 rolls the metal wire, and the third tension control regulator 11 at the rear end controls the speed of the metal wire, thereby adjusting the pulling speed of the wire by the power unit 124; the first special-shaped passive cross cold rolling mill 121 and the second special-shaped passive cross cold rolling mill 122 perform special-shaped cold rolling on the wire, and the first special-shaped passive cross cold rolling mill 121, the second special-shaped passive cross cold rolling mill 122 and the power unit 124 form a passive rolling process to produce a finished product;

[0061] Finally, the finished product winding device 16 provides power, and the finished wire product is wound into the finished product winding device 16 through the post-tension control regulator 13, wherein the post-tension control regulator 13 adjusts the wire receiving speed of the finished product winding device 16 by controlling the speed of the metal wire.

[0062] It should be noted that:

[0063] The present invention provides Figure 1-12 In the embodiment shown, N+1 groups of cold rolling forming units 7 are 3 groups, i.e., N=3, and M+1 groups of special-shaped passive cold rolling units 12 are 1 group, i.e., M=0. According to the above design concept, those skilled in the art can adjust the number of cold rolling forming units 7 and special-shaped passive cold rolling units 12 according to the wire processing requirements, including but not limited to the scheme shown in the embodiment;

[0064] The active flat rolling cold rolling mill is a prior art, such as Figure 5 As shown, the first active flat rolling cold rolling mill 5, the second active flat rolling cold rolling mill 72, and the third active flat rolling cold rolling mill 9 all include a roll stand 510, a roll group 520 consisting of a first roll and a second roll arranged up and down, and a roll driving mechanism 530 for driving the rolls to rotate. The specific working mechanism of the active flat rolling cold rolling mill for actively rolling the wire rod is the prior art and will not be described here; specifically, the active flat rolling cold rolling mill can select an existing device. According to the above concept, those skilled in the art can select a suitable model according to the needs;

[0065] The passive cross cold rolling mill is a prior art. Figure 1-12 In the embodiment shown, the cross cold rolling mill in this embodiment, namely the first passive cross cold rolling mill 71, the second passive cross cold rolling mill 8, the first special-shaped passive cross cold rolling mill 121 and the second special-shaped passive cross cold rolling mill 122, all adopt the existing passive cross cold rolling mill, the existing passive cross cold rolling mill comprises a base and a roller mechanism arranged on the base, the roller mechanism is composed of four rollers distributed at 90° to each other, the rollers are distributed in a cross shape relative to the rolled piece, and can also be distributed in an X shape, the specific working mechanism of the passive cross cold rolling mill is the prior art, and will not be repeated here; specifically, the passive cross cold rolling mill can select the existing device, for example, the passive cross cold rolling mill of model SP50, model SP85, model SP125 and model SP160 produced by Zilan Special Line Company, and those skilled in the art can select the appropriate model according to the needs, including but not limited to the above selection; wherein, the shape of the rollers in the first special-shaped passive cross cold rolling mill 121 and the second special-shaped passive cross cold rolling mill 122 can be adjusted and designed according to the size and structure requirements of the profiled material;

[0066] Among them, the positioning gauge circular die box 4 regularizes the incoming wire to improve the rolling quality of the rear wire. The positioning gauge circular die box 4 is the existing positioning gauge circular die box 4. The positioning gauge circular die box 4 used in this embodiment includes a die base and a positioning gauge circular die. The positioning gauge circular die is a die body with a through hole of a certain shape opened inside. The positioning gauge circular die is fixed in the die base and arranged along the movement direction of the wire. When in use, the wire passes through the inside of the positioning gauge circular die and enters the next process. The positioning gauge circular die box 4 regularizes the wire to form a wire with specified straightness and circularity.

[0067] The present invention makes full use of the advantages of active flat rolling and passive cross cold rolling mills, combines multiple processing steps, and enables efficient production of precision special-shaped metal wires or precision metal flat wires: a positioning gauge circular die box 4 is used in the active and passive combined cold rolling mill to regularize the incoming material and position the flat rolling wheel position of the first active flat rolling cold rolling mill 5, and provide a stable reverse tension to the first active flat rolling cold rolling mill 5, thereby ensuring the dimensional accuracy and straightness of the material after the first rolling; the first passive cross cold rolling mill 71 and the second passive cross cold rolling mill 8 are used to fine-tune the width to ensure the width accuracy and straightness of the material after each flat rolling, and provide a stable reverse tension to each flat rolling; the first special-shaped passive cross cold rolling mill 121, the second special-shaped passive cross cold rolling mill 122 and the power unit 124 are used to form a passive rolling process for special-shaped rolling. In summary, the active and passive combined cold rolling mill provided by the present invention has the following advantages: 1. High efficiency: round wire is fed into a single process and formed at high speed; 2. High precision: by combining active flat rolling cold rolling with passive cross cold rolling mill, the obtained wire can reach μm level precision; 3. Realize the growth of complex cross-section special-shaped metal wires; 4. Low cost: high-speed production and a one-stop single process greatly reduces production costs.

[0068] Preferably, it also includes a controller 15; the first active flat rolling cold rolling mill 5, the second active flat rolling cold rolling mill 72, and the third active flat rolling cold rolling mill 9 are all electrically connected to the controller 15, so that the controller 15 controls the operation of the first active flat rolling cold rolling mill 5, the second active flat rolling cold rolling mill 72, and the third active flat rolling cold rolling mill 9.

[0069] In specific implementation, the roller drive mechanisms 530 of the first active flat rolling cold rolling mill 5, the second active flat rolling cold rolling mill 72, and the third active flat rolling cold rolling mill 9 are all electrically connected to the controller 15. The controller 15 can control the operation of the roller drive mechanisms 530 to control the operation state of the rollers of the active flat rolling cold rolling mills. For example, in some embodiments, the roller drive mechanisms 530 use motors, and the controller 15 controls the motor's start, shut down, forward and reverse movement states to control the movement of the rollers, thereby controlling the operation of the first active flat rolling cold rolling mill 5 and the second active flat rolling cold rolling mill 72. The control method of the controller 15 to control the operation of the active flat rolling cold rolling mill is the prior art, and its working principle will not be repeated.

[0070] The controller 15 is a prior art device having a programmable memory function for storing programs internally, executing user-oriented instructions such as logic operations, sequence control, timing, counting and arithmetic operations, and controlling various types of machinery or production processes through digital or analog input / output. The working principles of data processing and control of various types of machinery or production processes will not be described again.

[0071] Furthermore, the controller 15 may be a controller 15 with a display control panel or control buttons.

[0072] The operator can issue instructions and set related parameters through the display control panel or control buttons of the controller 15, and feed back electrical signals to active flat rolling and cold rolling mills and other devices through the controller 15 to control the operation of the devices, thereby realizing human-computer interactive management.

[0073] Preferably, it also includes a straightening guide 2 for adjusting the straightness of the wire; the straightening guide 2 is arranged between the unloading device 1 and the pre-tension control regulator 3.

[0074] The straightening guide 2 is used to adjust the straightness of the wire entering the front tension control regulator 3, which is beneficial to production continuity and improves production efficiency; Figure 2 As shown, the straightening guide 2 in this embodiment includes two rows of parallel upper and lower straightening wheel groups, the sides of the straightening wheels are provided with grooves, and the straightening wheels are staggered and cross-arranged; when in use, the wire passes through the groove gaps left on the sides of the two staggered straightening wheel groups, wherein a reciprocating linear motion mechanism (such as a hydraulic cylinder, a pneumatic cylinder and other linear motion mechanisms) arranged above the upper straightening wheel 110 presses down on the upper straightening wheel 110, which can straighten the bending deformation of the wire in the vertical direction, and the horizontal straightening is limited by the grooves on the sides of the upper straightening wheel 110 and the lower straightening wheel 120. Since the grooves of the lower straightening wheel 120 are on a straight line, the grooves of the upper straightening wheel 110 are also on a straight line, and the two groups of grooves are opposite, which limits the bending deformation of the rod in the horizontal direction and improves the yield rate.

[0075] It should be noted that, in addition to the guide wheel type straightening guide 2 shown in the embodiment, those skilled in the art may also select other types or models of existing straightening guides 2, including but not limited to the solutions described in the embodiment.

[0076] Preferably, the front end of the straightening guide 2 is also provided with a positioning guide wheel 130 for guiding and positioning the wire; the positioning guide wheel 130 is used to position and guide the wire entering the straightening guide 2 from the discharge device 1.

[0077] Preferably, the front tension control regulator 3, the first tension control regulator 6, the second tension control regulator 73, the third tension control regulator 11 and the rear tension control regulator 13 all include a cross base 310 and a fixed guide wheel 320, a movable guide wheel 330 and a lifting mechanism 340 arranged on the cross base 310; the cross base 310 includes a cross bar frame and a vertical bar frame, and fixed guide wheels 320 on the same horizontal line are respectively installed at both ends of the cross bar frame, and the movable guide wheel 330 is connected to the vertical bar frame through a lifting mechanism 340, so that the lifting mechanism 340 drives the movable guide wheel 330 to move up and down.

[0078] When in use, the wire is passed over the two fixed guide wheels 320, and the movable guide wheel 330 is driven to move up and down reciprocatingly through the lifting mechanism 340; when working, the movable guide wheel 330 will make up and down reciprocating motions to adjust the tension and speed of the wire by applying downward force to the wire, and the tension control regulator is used to cooperate with the front-end process device and the back-end process device to control the wire tension.

[0079] Among them, Figure 4 As shown in the embodiment, the structure of the lifting mechanism 340 in this embodiment can be specifically as follows: the lifting mechanism 340 includes a rotating connecting rod 341 and a moving guide wheel driving mechanism 342, one end of the rotating connecting rod 341 is rotatably connected to the vertical rod frame, and the other end is connected to the moving guide wheel 330; the moving guide wheel driving mechanism 342 is connected to the vertical rod frame, and the other end of the moving guide wheel driving mechanism 342, that is, its output end is connected to the rotating connecting rod 9341, so that the moving guide wheel driving mechanism 342 drives the rotating connecting rod 341 to rotate, thereby driving the moving guide wheel 330 to move up and down.

[0080] It should be noted that: the movable guide wheel driving mechanism 342 can use an existing reciprocating linear motion mechanism, such as a gas / hydraulic cylinder, including but not limited to the reciprocating linear motion mechanism described in the embodiment; the tension control regulator is an existing tension regulating device for adjusting the wire tension, and technical personnel in this field can select an existing suitable type and model of tension regulating device according to needs, including but not limited to the scheme described in the embodiment.

[0081] Preferably, it also includes a first flattener 10 and a second flattener 123 for adjusting the straightness of the special-shaped wire; the first flattener 10 is arranged at the front end of the third tension control regulator 11, and the second flattener 123 is arranged at the rear end of the second special-shaped passive cross cold rolling mill 122.

[0082] The flattener is used to adjust the straightness of the flat wire, which is beneficial to production continuity, improve production efficiency and improve the quality of the produced wire. Figure 6As shown, the leveler in this embodiment includes a frame 101, two rows of leveling rollers (i.e., an upper leveling roller system 102 and a lower leveling roller system 102) arranged on the frame 101, a downward drive device for driving the upper leveling roller system 102 to move downward, and a lifting drive device for driving the lower leveling roller system 102 to move upward; the leveler adjusts the straightness of the flat wire through the upper and lower leveling rollers, thereby improving product quality and increasing the yield rate.

[0083] It should be noted that the first leveler 10 and the second leveler 123 are straightness levelers commonly used in existing wire production lines, and their working principles are not described again. Those skilled in the art can select suitable models of existing commercially available levelers according to their needs.

[0084] Preferably, if Figure 8 As shown, it also includes a finished product wire arrangement device 14 for arranging wires; the finished product wire arrangement device 14 is installed between the post-tension control regulator 13 and the finished product winding device 16, so that the wire transmitted from the post-tension control regulator 13 can be wound to the finished product winding device 16 after being arranged and positioned by the wire arrangement rod 1430 of the finished product wire arrangement device 14.

[0085] It should be noted that, in addition to the finished product cable arrangement device 14 used in this embodiment, those skilled in the art may also select other existing finished product cable arrangement devices 14, including but not limited to the solutions described in the above embodiments.

[0086] Preferably, the finished product winding device 16 is a reciprocating active off-axis I-wheel material receiving machine;

[0087] The finished product winding device 16 includes a finished product curling base 1610, an I-shaped curling wheel 1620 and a material receiving motor 1630; the I-shaped curling wheel 1620 is sleeved on a rotating shaft 1640; the rotating shaft 1640 is arranged on a bearing seat of the finished product curling base 1610; the material receiving motor 1630 is connected to the rotating shaft 1640 through a coupling, so that the material receiving motor 1630 can drive the I-shaped curling wheel 1620 to rotate and reel the wire onto the I-shaped curling wheel 1620.

[0088] When in use, the receiving motor 1630 provides power, and drives the rotating shaft 1640 to rotate through the coupling, thereby driving the I-shaped curling wheel 1620 to rotate, so that the metal wire can be rolled on the I-shaped curling wheel 1620; wherein, the finished product curling weight is set according to customer needs.

[0089] Preferably, the power unit 124 is a double-drum traction machine.

[0090] Furthermore, if Figure 1-12As shown in the embodiment, the double-drum traction machine in this embodiment includes a power base 1241, a first traction wheel 1242, a second traction wheel 1243 and a drum traction motor 1244; the first traction wheel 1242 is provided with a driving shaft 1245; the driving shaft 1245 is arranged on the bearing seat of the power base 1241; the driving shaft 1245 is provided with a first sprocket 1246; the second traction wheel 1243 is provided with a driven shaft 1247; the driven shaft 1247 is arranged on the bearing seat of the power base 1241; the driven shaft 1247 is provided with a second sprocket 1248; a second chain is sleeved between the first sprocket 1246 and the second sprocket 1248; the driving shaft 1245 is connected to the driven shaft 1247 through a connecting rod 1249; the drum traction motor 1244 is connected to the driving shaft 1245 through a coupling. Further, a wire pressing wheel is provided above the first traction wheel 1242 and the second traction wheel 1243.

[0091] When implementing it, Figure 1-12 As shown, the power is provided by the roller traction motor 1244 and transmitted to the first traction wheel 1242 by the coupling; the first traction wheel 1242 and the second traction wheel 1243 are driven by the sprocket and chain, and the action of the connecting rod 1249, so that the first traction wheel 1242 drives the second traction wheel 1243 to rotate; the metal wire on the power unit 124 relies on the friction between the metal material and the surface of the traction wheel to pull the material forward. A wire pressing wheel is provided above the first traction wheel 1242 and the second traction wheel 1243 to limit the height of the metal wire and to position the metal wire.

[0092] It should be noted that, in addition to the double-drum traction machine described in this embodiment, those skilled in the art may also select other existing power units 124 for providing power for traction of the wire, including but not limited to the double-drum traction machine described in the above embodiment.

[0093] Preferably, the discharge device 1 is an active I-wheel discharger. The active I-wheel discharger provided in this embodiment includes a discharge wheel base, a freely rotatable I-shaped discharge wheel mounted on the discharge wheel base, and a discharge motor driving the I-shaped discharge wheel to rotate; when in use, the unprocessed wire is wound on the I-shaped discharge wheel, and the unprocessed wire is discharged by rotating the I-shaped discharge wheel. It should be noted that the active I-wheel discharger is an existing device, and those skilled in the art can select a suitable type and model according to their needs.

[0094] Preferably, the finished product winding device 16 , the power unit 124 and the unwinding device 1 are all electrically connected to the controller 15 .

[0095] During specific implementation, the controller 15 controls the operation of the material receiving motor 1630 of the finished product winding device 16, the roller traction motor 1244 of the power unit 124 (double-roller traction machine) and the material discharging motor of the material discharging device 1, such as controlling the motor's opening, closing, forward and reverse operation states, thereby controlling the movement of the finished product winding device 16, the double-roller traction machine and the material discharging device 1.

[0096] Although the terms such as unloading device, front tension control regulator, positioning gauge round die box, etc. are used more frequently in this article, the possibility of using other terms is not excluded. The use of these terms is only for the purpose of more conveniently describing and explaining the essence of the present invention; interpreting them as any additional restrictions is contrary to the spirit of the present invention.

[0097] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An active and passive combined cold rolling mill, characterized in that: The invention comprises a discharge device (1) for discharging wire rods, a front tension control regulator (3), a positioning gauge round die box (4), a first active flat rolling cold rolling mill (5), a first tension control regulator (6), an N+1 group of cold rolling forming units (7), a second passive cross cold rolling mill (8), a third active flat rolling cold rolling mill (9), a third tension control regulator (11), an M+1 group of special-shaped passive cold rolling mills (12), a rear tension control regulator (13) and a finished product winding device (16) for winding the finished wire rods, which are arranged in sequence from front to back along the moving direction of the wire rods, and combine multiple processing steps to enable efficient production of precision special-shaped metal wire rods or precision metal flat wire rods; the positioning gauge round die box (4) regularizes the incoming material and positions the flat rolling wheel position of the first active flat rolling cold rolling mill (5), and provides the first active flat rolling cold rolling mill (5) with a stable reverse tension, thereby ensuring the dimensional accuracy and straightness of the material after the first rolling; Each cold rolling forming unit (7) comprises a first passive cross cold rolling mill (71), a second active flat rolling cold rolling mill (72) and a second tension control regulator (73) arranged in sequence along the moving direction of the wire rod, wherein N is greater than or equal to zero; the first passive cross cold rolling mill (71) and the second passive cross cold rolling mill (8) respectively fine-tune the width of the metal wire rod to ensure the width accuracy and straightness of the material after each flat rolling, and provide a stable reverse tension for each flat rolling; Each group of special-shaped passive cold rolling mills (12) comprises a first special-shaped passive cross cold rolling mill (121), a second special-shaped passive cross cold rolling mill (122) and a power unit (124) for pulling the wire, which are arranged in sequence along the moving direction of the wire, and M is greater than or equal to zero; the first special-shaped passive cross cold rolling mill (121), the second special-shaped passive cross cold rolling mill (122) and the power unit (124) form a passive rolling machine for special-shaped rolling, thereby realizing the production of metal wires with complex cross-sections; It also includes a straightening guide (2) for adjusting the straightness of the wire, wherein the straightening guide (2) is arranged between the unwinding device (1) and the front tension control regulator (3) and is used to adjust the straightness of the wire entering the front tension control regulator (3), thereby facilitating production continuity and improving production efficiency; It also includes a first flattener (10) and a second flattener (123) for adjusting the straightness of the special-shaped wire; the first flattener (10) is arranged at the front end of the third tension control regulator (11), and the second flattener (123) is arranged at the rear end of the second special-shaped passive cross cold rolling mill (122), and is used to adjust the straightness of the flat wire, which is beneficial to production continuity, improves production efficiency and enhances the quality of the produced wire.

2. The active and passive combined cold rolling mill according to claim 1, characterized in that: It also includes a controller (15); the first active flat rolling cold rolling mill (5), the second active flat rolling cold rolling mill (72) and the third active flat rolling cold rolling mill (9) are all electrically connected to the controller (15), so that the controller (15) controls the operation of the first active flat rolling cold rolling mill (5), the second active flat rolling cold rolling mill (72) and the third active flat rolling cold rolling mill (9).

3. The active and passive combined cold rolling mill according to claim 1, characterized in that: The front tension control regulator (3), the first tension control regulator (6), the second tension control regulator (73), the third tension control regulator (11) and the rear tension control regulator (13) all include a cross base (310) and a fixed guide wheel (320), a movable guide wheel (330) and a lifting mechanism (340) arranged on the cross base (310); The cross base (310) comprises a cross bar frame and a vertical bar frame, and fixed guide wheels (320) located on the same horizontal line are respectively installed at both ends of the cross bar frame, and the movable guide wheel (330) is connected to the vertical bar frame through a lifting mechanism (340), so that the lifting mechanism (340) drives the movable guide wheel (330) to move up and down.

4. The active and passive combined cold rolling mill according to claim 1, characterized in that: Also included is a finished wire arrangement device (14) for arranging wires; The finished product wire arrangement device (14) is installed between the post-tension control regulator (13) and the finished product winding device (16), so that the wire transmitted from the post-tension control regulator (13) is wound to the finished product winding device (16) after being arranged and positioned by the wire arrangement rod of the finished product wire arrangement device (14).

5. The active and passive combined cold rolling mill according to claim 1, characterized in that: The finished product winding device (16) is a reciprocating active off-axis I-wheel material collecting machine; The finished product winding device (16) comprises a finished product curling base (1610), an I-shaped curling wheel (1620) and a material receiving motor (1630); the I-shaped curling wheel (1620) is sleeved on a rotating shaft (1640); the rotating shaft (1640) is arranged on a bearing seat of the finished product curling base (1610); the material receiving motor (1630) is connected to the rotating shaft (1640) via a coupling, so that the material receiving motor (1630) drives the I-shaped curling wheel (1620) to rotate and reels the wire onto the I-shaped curling wheel (1620).

6. The active and passive combined cold rolling mill according to claim 1, characterized in that: The power unit (124) is a double-drum traction machine.

7. The active and passive combined cold rolling mill according to claim 1, characterized in that: The finished product winding device (16), the power unit (124) and the unwinding device (1) are all electrically connected to the controller (15).

8. The active and passive combined cold rolling mill according to claim 1, characterized in that: The front end of the straightening guide (2) is also provided with a positioning guide wheel (130) for guiding and positioning the wire.

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