CN209953513U

CN209953513U - Double-head cold drawing machine

Info

Publication number: CN209953513U
Application number: CN201920619981.6U
Authority: CN
Inventors: 宋奎禹
Original assignee: Shandong Dashan Stainless Steel Products Co Ltd
Current assignee: Shandong Dashan Stainless Steel Products Co Ltd
Priority date: 2019-04-30
Filing date: 2019-04-30
Publication date: 2020-01-17
Anticipated expiration: 2029-04-30

Abstract

The utility model discloses a double-end cold drawing machine, which comprises a frame, be equipped with power device in the frame and by two power output shaft of the left and right sides of power device driven, install a winding roller on two power output shaft separately, be equipped with in the frame about two cold drawing mould, two diverting pulleys, two cold drawing mould are located the rear of two winding rollers respectively, two diverting pulleys are located the rear of two cold drawing mould respectively. The utility model discloses can once only carry out twice drawing to the reinforcing bar, obtain thinner reinforcing bar, need not through two efficiency that can improve processing from this, save process time, the utility model discloses a two power output shafts are driven by same power device, can save one set of power device, and the structure is comparatively compact, and is with low costs, area is few.

Description

Double-head cold drawing machine

Technical Field

The utility model relates to a double-end cold drawing machine.

Background

The cold drawing machine is a mechanical equipment for drawing steel bar, and its principle is that at normal temp. the steel bar is strongly drawn, so that its tensile stress exceeds the yield point of the steel bar and is not greater than tensile strength, so that the steel bar can produce plastic deformation, and the steel bar with small diameter can be obtained.

The existing cold drawing machine comprises a frame, wherein a power device and a winding roller driven by the power device are arranged on the frame, a cold drawing die is further arranged on the frame, a steel bar penetrates through the cold drawing die and then is fixed on the winding roller, the steel bar is continuously wound on the winding roller by utilizing the rotation of the winding roller to form traction on the steel bar, the steel bar needs to pass through a guide hole in the cold drawing die before being wound on the winding roller, the minimum diameter of the guide hole is smaller than the diameter of the steel bar to be processed, and the diameter of the steel bar is reduced in the process of passing through the guide hole, so that the thinner steel bar is obtained. In order to obtain a thinner reinforcing bar, the reinforcing bar needs to be drawn twice, and therefore, the reinforcing bar needs to be processed twice, which takes a lot of time.

Disclosure of Invention

The utility model aims at the above-mentioned problem provide one kind can once only carry out the double-end cold drawing machine of twice cold drawing to the reinforcing bar to improve production efficiency.

In order to achieve the purpose, the utility model discloses a frame, be equipped with power device in the frame and by power device driven two power output shaft about, install a winding roller on two power output shaft separately, be equipped with about in the frame two cold drawing die utensil, two diverting pulleys, two cold drawing die utensil are located the rear of two winding rollers respectively, two diverting pulleys are located the rear of two cold drawing die utensil respectively.

The double-head cold drawing machine has the following use mode: the reinforcing steel bar passes through one of the cold drawing dies and then is wound for one to two circles by the corresponding winding rollers, then the reinforcing steel bar returns after passing through the two steering pulleys and then passes through the other cold drawing die and then is wound on the other winding roller, the two winding rollers rotate to pull the reinforcing steel bar to continuously advance forwards, the reinforcing steel bar is firstly stretched once by the cold drawing die and then stretched for the second time by the other cold drawing die, and the reinforcing steel bar with the smaller diameter is obtained by stretching for two times. Because the thick reinforcing steel bar can be used for obtaining the thin reinforcing steel bar through twice stretching, the drawing is not needed for twice, the processing efficiency can be improved, and the processing time is saved. The two power output shafts of the double-head cold drawing machine are driven by the same power device, so that one set of power device can be saved, the structure is compact, the cost is low, and the occupied area is small.

The power device comprises a power box, two power output shafts are rotatably arranged in the power box, one end of each power output shaft extends out of the power box, a winding roller is arranged at one end of each power output shaft extending out of the power box, a transversely extending transmission shaft and a power input shaft are rotatably arranged in the power box, the transmission shaft is positioned behind the two power output shafts, the power input shaft is positioned behind the transmission shaft, the transmission shaft and the two power output shafts are in gear transmission, the power input shaft and the transmission shaft are in gear transmission, and one end of the power input shaft extends out of the power box and is in power connection with a motor arranged on the rack through a transmission mechanism. The motor outputs power to drive the power input shaft to rotate, the power input shaft transmits power to the transmission shaft, and the transmission shaft transmits power to the two power output shafts, so that the two winding rollers are driven to rotate, and one power and two outputs are realized.

The power input shaft is provided with a first gear, the transmission shaft is provided with a second gear and two third gears, the two power output shafts are provided with fourth gears, the first gear is meshed with the second gear, and the third gears are meshed with the fourth gears on the corresponding power output shafts. The power transmission between the power input shaft and the transmission shaft is realized by the meshing of the first gear and the second gear, and the power transmission between the transmission shaft and the power output shaft is realized by the meshing of the third gear and the fourth gear.

The number of teeth of the first gear is less than that of the second gear, and the number of teeth of the third gear is less than that of the fourth gear. The rotating speed ratio between different shafts can be changed by utilizing the difference of the tooth numbers of the meshed gears, and the effects of reducing the rotating speed and increasing the output torque are achieved.

The power output shaft is sleeved with a slidable sleeve, the sleeve is connected with the power output shaft through a spline, the fourth gear is fixedly connected onto the sleeve, the sleeve is further fixedly connected with a first baffle disc and a second baffle disc, the first baffle disc and the second baffle disc are located on the same side of the fourth gear, a swing rod is hinged into the power box, one end of the swing rod is inserted between the first baffle disc and the second baffle disc, and the other end of the swing rod penetrates through a through hole in the power box and extends out of the power box. The meshing state of the fourth gear and the third gear can be changed by shifting the swing rod, so that whether the two winding rollers rotate or not can be controlled independently, the two sets of winding rollers and the cold drawing die can work independently, single drawing of the reinforcing steel bar is realized, and the device is suitable for the condition that the reinforcing steel bar is not required to be drawn twice. Through the improvement, one machine has multiple purposes, and the purpose of saving resources is achieved.

Be equipped with position control device between diverting pulley and the frame, position control device includes slider, vertical back shaft, horizontal lead screw, and vertical back shaft is fixed on the slider, and the frame has the horizontal mesa, and the slider pastes and leans on the bottom at the horizontal mesa, is equipped with the slot hole of horizontal extension on the horizontal mesa, and vertical back shaft passes the slot hole and upwards stretches out, diverting pulley rotates and installs in the upper end of vertical back shaft, and horizontal lead screw rotates and installs in the frame, is equipped with the screw thread through-hole on the slider, and horizontal lead screw passes the screw thread through-hole on the slider, and the external screw thread on the horizontal lead screw matches with the internal thread of screw thread through. When the rotating handle rotates, the transverse screw rod rotates along with the rotating handle, the sliding block can be driven to transversely slide, the position of the steering pulley is changed, the tightness state of the steel bar can be changed through adjustment, the steel bar is prevented from loosening and falling, and in addition, when the two sets of winding rollers and the cold drawing die work independently, the steering pulley can be adjusted to avoid the advancing area of the steel bar.

The cold drawing die comprises a die holder connected to the frame, an installation cavity is formed in one side of the die holder, an upper die and a lower die are installed in the installation cavity, the lower die is fixed to the die holder, the upper die can slide up and down in the installation cavity, threaded connection holes are formed in the top wall of the installation cavity, vertical lead screws are installed in the threaded connection holes in a threaded mode, the lower ends of the vertical lead screws are rotatably connected to the upper die, one half of each of the upper die and the lower die is provided with a complete guide hole, the two half of each guide hole are formed when the upper die is in contact with the lower die, each guide hole comprises a front section and a rear section, the front section of each guide hole is a straight hole, the rear section of each guide hole is a conical hole with the diameter. When drawing the reinforcing bar, the reinforcing bar loops through bell mouth, straight hole, punishment in advance, and the diameter diminishes gradually when passing through the bell mouth, obtains the reinforcing bar with the same thickness of straight hole. The upper die can move upwards by rotating the vertical lead screw, so that the distance between the upper die and the lower die is increased, the steel bars are placed before processing, and the upper die and the lower die can be combined by reversely rotating the vertical lead screw after the steel bars are placed.

The top surface of going up the mould installs the bearing frame, installs thrust bearing in the inner chamber of bearing frame, and the lower extreme of vertical lead screw inserts in thrust bearing's the hole and fixes with it. The structure realizes the rotating connection between the vertical screw rod and the upper die and has simpler structure.

To sum up, the utility model discloses can once only carry out twice drawing to the reinforcing bar, obtain thinner reinforcing bar, need not through two efficiency that can improve processing from this, save process time, the utility model discloses a two power output shafts are driven by same power device, can save one set of power device, and the structure is comparatively compact, and is with low costs, area is few.

Drawings

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings:

fig. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a schematic view of the structure of FIG. 1 taken along line A-A;

fig. 3 is a schematic structural diagram of an embodiment of the cold drawing die of the present invention;

fig. 4 is a schematic view of the structure of fig. 3 taken along line B-B.

Detailed Description

Referring to fig. 1 and 2, in the first embodiment of the present invention, the double-head cold drawing machine includes a frame 1, a power device and a left and right two power output shafts 2 driven by the power device are provided on the frame 1, a winding roller 3 is provided on each of the two power output shafts 2, a left and right two cold drawing dies 4 and two turning pulleys 5 are provided on the frame 1, the two cold drawing dies 4 are respectively located at the rear of the two winding rollers 3, and the two turning pulleys 5 are respectively located at the rear of the two cold drawing dies 4.

The double-head cold drawing machine has the following use mode: the reinforcing bar passes one of them cold drawing mould 4 back and returns after the winding of corresponding winding roller 3 is one to two circles, then is walking around two diverting pulleys 5, passes another cold drawing mould 4 winding on another winding roller 3 next, and two winding rollers 3 rotate and pull the reinforcing bar and constantly advance forward, and the reinforcing bar is stretched once through a cold drawing mould 4 earlier, and then carries out the secondary drawing through another cold drawing mould 4, obtains the thinner reinforcing bar of diameter through twice drawing. Because the thick reinforcing steel bar can be used for obtaining the thin reinforcing steel bar through twice stretching, the drawing is not needed for twice, the processing efficiency can be improved, and the processing time is saved. The two power output shafts 2 of the double-head cold drawing machine are driven by the same power device, one set of power device can be saved, the structure is compact, the cost is low, and the occupied area is small.

The power device comprises a power box 6, two power output shafts 2 are rotatably installed in the power box 6, one end of each power output shaft extends out of the power box 6, a winding roller 3 is installed at one end of each power output shaft 2 extending out of the power box 6, a transversely extending transmission shaft 7 is installed in the power box 6 in a rotating mode, a power input shaft 8 is located behind the two power output shafts 2, the power input shaft 8 is located behind the transmission shaft 7, the transmission shaft 7 and the two power output shafts 2 are in gear transmission, the power input shaft 8 and the transmission shaft 7 are in gear transmission, one end of the power input shaft 8 extends out of the power box 6 and is in power connection with a motor 9 installed on the rack 1 through a transmission mechanism. The motor 9 outputs power to drive the power input shaft 8 to rotate, the power input shaft 8 transmits power to the transmission shaft 7, and the transmission shaft 7 transmits power to the two power output shafts 2, so that the two winding rollers 3 are driven to rotate, and one power and double output are realized.

The power input shaft 8 is provided with a first gear 10, the transmission shaft 7 is provided with a second gear 11 and two third gears 12, the two power output shafts 2 are provided with fourth gears 13, the first gear 10 is meshed with the second gear 11, and the third gears 12 are meshed with the fourth gears 13 on the corresponding power output shafts 2. The power transmission between the power input shaft 8 and the propeller shaft 7 is realized by the engagement between the first gear 10 and the second gear 11, and the power transmission between the propeller shaft 7 and the power output shaft 2 is realized by the engagement between the third gear 12 and the fourth gear 13.

The number of teeth of the first gear 10 is smaller than that of the second gear 11, and the number of teeth of the third gear 12 is smaller than that of the fourth gear 13. The rotating speed ratio between different shafts can be changed by utilizing the difference of the tooth numbers of the meshed gears, and the effects of reducing the rotating speed and increasing the output torque are achieved.

The power output shaft 2 is sleeved with a slidable sleeve 14, the sleeve 14 is connected with the power output shaft 2 through a spline, the fourth gear 13 is fixedly connected onto the sleeve 14, the sleeve 14 is further fixedly connected with a first baffle disc 15 and a second baffle disc 16, the first baffle disc 15 and the second baffle disc 16 are located on the same side of the fourth gear 13, a swing rod 17 is hinged into the power box 6, one end of the swing rod 17 is inserted between the first baffle disc 15 and the second baffle disc 16, and the other end of the swing rod 17 penetrates through a through hole in the power box 6 and extends out of the power box 6. The meshing state of the fourth gear 13 and the third gear 12 can be changed by shifting the swing rod 17, so that whether the two winding rollers 3 rotate or not can be controlled independently, the two sets of winding rollers 3 and the cold drawing die 4 can work independently, single drawing of the reinforcing steel bar is realized, and the steel bar drawing device is suitable for the condition that the reinforcing steel bar is not required to be drawn twice. Through the improvement, one machine has multiple purposes, and the purpose of saving resources is achieved.

Be equipped with position control device between diverting pulley 5 and frame 1, position control device includes slider 18, vertical back shaft 19, horizontal lead screw 20, and vertical back shaft 19 is fixed on slider 18, and frame 1 has horizontal mesa 21, and slider 18 pastes and leans on the bottom at horizontal mesa 21, is equipped with the slot hole 22 of horizontal extension on the horizontal mesa 21, and vertical back shaft 19 passes slot hole 22 and upwards stretches out, diverting pulley 5 rotates the upper end of installing at vertical back shaft 19, and horizontal lead screw 20 rotates and installs in frame 1, is equipped with screw through-hole 23 on the slider 18, and horizontal lead screw 20 passes screw through-hole 23 on the slider 18, and external screw thread and the internal thread phase-match of screw through-hole 23 on the horizontal lead screw 20 install turning handle 24 on the horizontal lead screw 20. When the rotating handle 24 rotates, the transverse screw rod 20 rotates along with the rotating handle, so that the sliding block 18 can be driven to transversely slide, the position of the steering pulley 5 can be changed, the tightness state of the steel bar can be changed through the adjustment, the steel bar is prevented from loosening and falling, and in addition, when the two sets of winding rollers 3 and the cold drawing die 4 work independently, the steering pulley 5 can be adjusted to avoid the advancing area of the steel bar.

The utility model also improves the cold drawing die 4, referring to fig. 3 and 4, the improved cold drawing die 4 comprises a die holder 25 connected on the frame 1, one side of the die holder 25 is provided with an installation cavity, an upper die 26 and a lower die 27 are arranged in the installation cavity, the lower die 27 is fixed on the die holder 25, the upper die 26 can slide up and down in the installation cavity, the top wall of the installation cavity is provided with a threaded connection hole 28, a vertical lead screw 29 is screwed in the threaded connection hole 28, the lower end of the vertical lead screw 29 is rotationally connected on the upper die 26, the upper die 26 and the lower die 27 are respectively provided with a half hole, the two half holes are combined into a complete guide hole 30 when the upper die 26 contacts with the lower die 27, the guide hole 30 comprises a front section and a rear section, the front section of the installation cavity is a straight hole 31, the rear section of the installation cavity is a tapered hole 32 with the diameter gradually increasing backwards, a material passing hole 33 corresponding to the guide hole 30 is arranged on the front wall of the installation cavity, and the diameter of the material passing hole 33 is larger than that of the straight hole 31. When the reinforcing steel bar is drawn, the reinforcing steel bar advances forward through the tapered hole 32, the straight hole 31, and the passing hole 33 in this order, and the diameter of the reinforcing steel bar gradually decreases when the reinforcing steel bar passes through the tapered hole 32, thereby obtaining the reinforcing steel bar having the same thickness as the straight hole 31. The upper die 26 can move upwards by rotating the vertical lead screw 29, so that the distance between the upper die 26 and the lower die 27 is increased, the placement of the steel bars before processing is facilitated, and the vertical lead screw 29 is rotated reversely after the steel bars are placed, so that the upper die 26 and the lower die 27 are combined.

The top surface of the upper die 26 is provided with a bearing seat 34, a thrust bearing 35 is arranged in the inner cavity of the bearing seat 34, and the lower end of the vertical screw 29 is inserted into and fixed with the inner hole of the thrust bearing 35. The structure realizes the rotary connection between the vertical screw 29 and the upper die 26 and is simple.

To sum up, the present invention is not limited to the above-mentioned specific embodiments. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications are intended to be within the scope of the present invention.

Claims

1. The utility model provides a double-end cold drawing machine, includes frame (1), characterized by be equipped with power device and by two power output shaft (2) about power device driven in frame (1), install a winding roller (3) on two power output shaft (2) separately, two cold drawing mould (4), two diverting pulley (5) about being equipped with on frame (1), two cold drawing mould (4) are located the rear of two winding roller (3) respectively, two diverting pulley (5) are located the rear of two cold drawing mould (4) respectively.

2. The double-head cold drawing machine according to claim 1, wherein the power device comprises a power box (6), two power output shafts (2) are rotatably arranged in the power box (6) and respectively provided with one end extending out of the power box (6), a winding roller (3) is arranged at one end of each power output shaft (2) extending out of the power box (6), a transversely extending transmission shaft (7) and a power input shaft (8) are rotatably arranged in the power box (6), the transmission shaft (7) is positioned behind the two power output shafts (2), the power input shaft (8) is positioned behind the transmission shaft (7), the transmission shaft (7) and the two power output shafts (2) are in gear transmission, and the power input shaft (8) and the transmission shaft (7) are in gear transmission, one end of the power input shaft (8) extends out of the power box (6) and is in power connection with a motor (9) arranged on the frame (1) through a transmission mechanism.

3. The double-head cold drawing machine according to claim 2, wherein the power input shaft (8) is provided with a first gear (10), the transmission shaft (7) is provided with a second gear (11) and two third gears (12), the two power output shafts (2) are provided with fourth gears (13), the first gear (10) is meshed with the second gear (11), and the third gears (12) are meshed with the fourth gears (13) on the corresponding power output shafts (2).

4. A double-headed cold-drawing machine according to claim 3, characterised in that the first gear (10) has a number of teeth which is less than that of the second gear (11), and the third gear (12) has a number of teeth which is less than that of the fourth gear (13).

5. The double-head cold drawing machine according to claim 3 is characterized in that a slidable sleeve (14) is sleeved on the power output shaft (2), the sleeve (14) is connected with the power output shaft (2) through a spline, the fourth gear (13) is fixedly connected to the sleeve (14), the sleeve (14) is further fixedly connected with a first baffle disc (15) and a second baffle disc (16), the first baffle disc (15) and the second baffle disc (16) are located on the same side of the fourth gear (13), a swing rod (17) is hinged in the power box (6), one end of the swing rod (17) is inserted between the first baffle disc (15) and the second baffle disc (16), and the other end of the swing rod (17) penetrates through a through hole in the power box (6) and extends out of the power box (6).

6. The double-headed cold drawing machine according to claim 1, wherein a position adjusting device is arranged between the steering pulley (5) and the frame (1), the position adjusting device comprises a slide block (18), a vertical supporting shaft (19) and a transverse screw rod (20), the vertical supporting shaft (19) is fixed on the slide block (18), the frame (1) is provided with a horizontal table top (21), the slide block (18) is attached to the bottom of the horizontal table top (21), the horizontal table top (21) is provided with a transversely extending long hole (22), the vertical supporting shaft (19) passes through the long hole (22) to extend upwards, the steering pulley (5) is rotatably mounted at the upper end of the vertical supporting shaft (19), the transverse screw rod (20) is rotatably mounted on the frame (1), the slide block (18) is provided with a threaded through hole (23), and the transverse screw rod (20) passes through the threaded through hole (23) on, the external thread on the transverse screw rod (20) is matched with the internal thread of the thread through hole (23), and the transverse screw rod (20) is provided with a rotating handle (24).

7. The double-head cold drawing machine according to claim 1, wherein the cold drawing die (4) comprises a die holder (25) connected to the frame (1), one side of the die holder (25) is provided with an installation cavity, an upper die (26) and a lower die (27) are installed in the installation cavity, the lower die (27) is fixed on the die holder (25), the upper die (26) can slide up and down in the installation cavity, the top wall of the installation cavity is provided with a threaded connection hole (28), a vertical lead screw (29) is spirally installed in the threaded connection hole (28), the lower end of the vertical lead screw (29) is rotatably connected to the upper die (26), the upper die (26) and the lower die (27) are respectively provided with a half hole, when the upper die (26) and the lower die (27) are in contact, the two half holes are integrated guide holes (30), the guide holes (30) comprise a front section and a rear section, the front section is a straight hole (31), the front wall of the mounting cavity is provided with a material passing hole (33) corresponding to the guide hole (30), and the diameter of the material passing hole (33) is larger than that of the straight hole (31).

8. The double-headed cold drawing machine according to claim 7, wherein a bearing seat (34) is mounted on the top surface of the upper die (26), a thrust bearing (35) is mounted in the inner cavity of the bearing seat (34), and the lower end of the vertical screw rod (29) is inserted into and fixed with the inner hole of the thrust bearing (35).