CN118268382A - Cold rolling mill with roller spacing adjusting structure - Google Patents

Abstract

The application relates to a cold rolling mill with a roller spacing adjusting structure, which relates to the technical field of cold rolling and comprises a base, a supporting frame, a driving roller, a driven roller and a driving motor, wherein the supporting frame is arranged in the base, the driving roller is arranged on the supporting frame, an output shaft of the driving motor is connected with the driving roller, a position adjusting mechanism is arranged on the base, the driven roller is arranged on the position adjusting mechanism, and a first positioning mechanism for detachably connecting the position adjusting mechanism on the base is arranged on the base. The application has the effect of being convenient for the staff to disassemble, assemble and overhaul the roller.

Description

Cold rolling mill with roller spacing adjusting structure

Technical Field

The application relates to the field of cold rolling technology, in particular to a cold rolling mill with a roller spacing adjusting structure.

Background

The cold rolling mill is a new type of cold-rolling processing equipment for reinforcing steel bar, and the main working parts and tools for making metal produce continuous plastic deformation on the mill.

The roller mainly comprises a roller body, a roller neck and a shaft head. The roll body is the middle part of the roll that actually participates in rolling metal. It has a smooth cylindrical or grooved surface. The roll neck is arranged in the bearing and transmits rolling force to the frame through the bearing seat and the pressing device. The shaft head of the driving end is connected with the gear seat through a connecting shaft, and the rotating moment of the motor is transmitted to the roller. The rolls may be arranged in a roll stand in the form of two rolls, three rolls, four rolls or multiple rolls.

After one-end time use, the roller on the existing cold rolling mill is easy to crack, cause impurities to stick to the roller and cause peeling of the surface of the stick roller, and after the problems appear, the quality of rolled pieces after rolling production cannot be guaranteed, but the existing roller is usually fixedly arranged in a base, so that the disassembly, assembly and maintenance of workers are inconvenient.

Disclosure of Invention

In order to facilitate the disassembly, assembly and maintenance of the rollers by workers, the application provides a cold rolling mill with a roller spacing adjusting structure.

The cold rolling mill with the roller spacing adjusting structure provided by the application adopts the following technical scheme:

The utility model provides a possess cold rolling mill of roll interval adjustment structure, includes base, support frame, drive roll, driven voller and driving motor, the support frame is installed in the base, the drive roll is installed on the support frame, the driving motor output shaft with the drive roll is connected, be provided with position adjustment mechanism on the base, the driven voller is installed on the position adjustment mechanism, install on the base be used for with position adjustment mechanism can dismantle the connection be in first positioning mechanism on the base.

Through adopting above-mentioned technical scheme, position adjustment mechanism drives the driven voller and removes, adjusts the interval between driven voller and the drive roll to realize the cold rolling processing to different thickness steel sheets, fix position adjustment mechanism through first positioning mechanism, when need carry out dismouting maintenance to driven voller and drive roll, can demolish position adjustment mechanism, driven voller and the drive roll of setting on position adjustment mechanism fast from the base, the staff of being convenient for is to the dismouting maintenance of roll.

In a specific implementation manner, the position adjusting mechanism comprises an adjusting seat, a hydraulic cylinder and a moving frame, wherein a clamping block is arranged on the adjusting seat, a clamping groove is formed in the side wall of the base along the height direction, the clamping block is clamped in the clamping groove, the hydraulic cylinder is installed on the adjusting seat, the moving frame is fixedly connected with a piston rod of the hydraulic cylinder, the moving frame is slidably connected in the clamping groove, and the first positioning mechanism is used for fixing the adjusting seat.

Through adopting above-mentioned technical scheme, the pneumatic cylinder passes through the piston rod and drives the movable frame and remove along the joint groove to adjust the interval between driven voller and the driving roll, thereby can process the waiting machined part of different thickness, the fixed adjustment seat of rethread positioning mechanism improves the stability of driven voller during operation, avoids the driven voller to be jacked, thereby influences the processing of waiting the machined part.

In a specific implementation mode, the movable frame is rotatably connected with a driven shaft, the driven shaft is mounted on the driven shaft, two ends of the driven shaft are rotatably connected with second positioning mechanisms, movable frame positioning holes are formed in the movable frame corresponding to the second positioning mechanisms, and the second positioning mechanisms can be clamped in the movable frame positioning holes.

Through adopting above-mentioned technical scheme, the driven shaft both ends rotate respectively and connect on second positioning mechanism, can dismantle the connection on removing the frame with second positioning mechanism again, can further remove the driven shaft and set up the driven voller on the driven shaft from removing the frame, be convenient for to driven voller dismouting maintenance.

In a specific implementation manner, the second positioning mechanism comprises a second positioning sleeve, a swivel and a second positioning rod, an inserting block is arranged on the second positioning sleeve, the end part of the driven shaft corresponds to the inserting block, a driven shaft inserting groove is formed in the inserting block, the inserting block is inserted into the driven shaft inserting groove, the swivel is slidably connected into the second positioning sleeve, an arc groove is formed in the swivel, one end of the arc groove is farther from the center of the swivel than the other end of the arc groove, one end of the second positioning rod is slidably connected into the arc groove, a sliding hole is formed in the side wall of the second positioning sleeve, the second positioning rod is slidably connected into the sliding hole, the second positioning rod is far away from one end of the swivel and can penetrate out of the second positioning sleeve, and a movable frame positioning groove is formed in the movable frame corresponding to the second positioning rod.

Through adopting above-mentioned technical scheme, rotate the swivel, the second locating lever removes along the arc groove under the restriction of arc groove to make the second locating lever remove relative second locating sleeve, and extend to the second locating sleeve and peg graft in removing the frame constant head tank outward, fix the second locating sleeve on removing the frame, fix the driven shaft, make the driven roll can realize treating the processing work of machined part, when need demolish the driven roll simultaneously, only need the reverse direction rotate the swivel can, be favorable to improving the convenience of demolishing driven shaft and driven roll.

In a specific implementation manner, the plurality of arc-shaped grooves are formed in the circumferential part of the swivel, and the number and the positions of the second positioning rods, the sliding holes and the positioning grooves of the movable frame correspond to the arc-shaped grooves.

Through adopting above-mentioned technical scheme, a plurality of second locating lever removes relative slide hole, extends outside the second locating sleeve to peg graft in removing the frame constant head tank and fix the second locating sleeve, be favorable to improving the driven shaft and set up the stability of driven voller on the driven shaft.

In a specific embodiment, the rotary rod is coaxially connected with the rotary ring, one end of the rotary rod penetrates out of the side wall of the second locating sleeve to be arranged, and the rotary rod can rotate relative to the second locating sleeve.

Through adopting above-mentioned technical scheme, the staff drives the swivel through rotatory bull stick and rotates, is favorable to improving the convenience that the staff rotated the swivel.

In a specific implementation manner, the first positioning mechanisms are arranged in a plurality, the first positioning mechanisms are respectively arranged on two side walls of the base, and the first positioning mechanisms are symmetrically arranged.

Through adopting above-mentioned technical scheme, a plurality of first positioning mechanism symmetry sets up, fixes position adjustment mechanism through a plurality of first positioning mechanism, is favorable to improving the fixed stability of position adjustment mechanism, further improves the stability of driven voller during operation.

In a specific implementation manner, the first positioning mechanism comprises a first positioning sleeve and a first positioning rod, the first positioning sleeve is arranged on the base, the positioning rod is slidably connected to the first positioning sleeve, a base through hole is formed in the base corresponding to the first positioning sleeve, a positioning rod positioning groove is formed in the position adjusting mechanism corresponding to the base through hole, and the first positioning rod can be clamped in the positioning rod positioning groove to position the position adjusting mechanism.

Through adopting above-mentioned technical scheme, the relative first position sleeve of first locating lever removes, pegs graft first locating lever in the locating lever constant head tank that sets up on position adjustment mechanism to realize fixing position adjustment mechanism, be convenient for remove position adjustment mechanism's fixed simultaneously, be favorable to position adjustment mechanism's dismouting to overhaul.

In a specific implementation manner, the device further comprises a positioning spring and a supporting rod, wherein the positioning spring is arranged in the first positioning sleeve, one end of the positioning spring is connected with the side wall of the first positioning sleeve, the other end of the positioning spring is connected with the first positioning rod, the positioning spring is in a stretching state, the supporting rod is arranged on the first positioning rod, a supporting rod sliding groove is formed in the first positioning sleeve corresponding to the supporting rod, and the supporting rod is slidably connected in the supporting rod sliding groove.

Through adopting above-mentioned technical scheme, positioning spring sets up in first locating sleeve, positioning spring is in tensile state all the time, thereby apply effort to first locating lever, avoid in the course of working, because the vibration of device leads to first locating lever roll-off constant head tank, remove the fixed to position adjustment mechanism, thereby influence the processing work of treating the machined part, exert effort to first locating lever simultaneously, tensile positioning spring, with bracing piece joint on first locating sleeve, remove the fixed to position adjustment mechanism, be convenient for overhaul the dismouting of position adjustment mechanism.

In a specific implementation manner, the device further comprises an output shaft, cross universal joints and a driving shaft, wherein two cross universal joints are arranged, the two cross universal joints are respectively installed at two ends of the output shaft, the driving motor is connected with the cross universal joints at one end of the output shaft, the driving shaft is rotatably connected to the supporting frame, the driving shaft is connected with the cross universal joints at the other end of the output shaft, and the driving roller is installed on the driving shaft.

Through adopting above-mentioned technical scheme, driving motor passes through the cross universal joint and articulates with the output shaft, and the output shaft passes through the cross universal joint and articulates with the driving shaft, when the pass line of roll is adjusted to needs, can be through the height of increase gasket adjustment driving roll under the support frame, the setting of cross universal joint simultaneously for can accomplish the drive to the driving roll under the condition that does not need to adjust driving motor position, realize treating the processing work of machined part, and the cross universal joint dismantles conveniently, is favorable to improving the convenience of demolising the driving roll from the base.

In summary, the present application includes at least one of the following beneficial technical effects:

1. The position adjusting mechanism drives the driven roller to move, and the distance between the driven roller and the driving roller is adjusted, so that cold rolling processing of steel plates with different thicknesses is realized, the position adjusting mechanism is fixed through the first positioning mechanism, and when the driven roller and the driving roller are required to be disassembled and overhauled, the position adjusting mechanism, the driven roller arranged on the position adjusting mechanism and the driving roller can be quickly disassembled from the base, so that the disassembly and the overhaul of the rollers by workers are facilitated;

2. The rotary ring is rotated, and the second positioning rod moves along the arc-shaped groove under the limit of the arc-shaped groove, so that the second positioning rod moves relative to the second positioning sleeve, extends to the outside of the second positioning sleeve and is inserted into the positioning groove of the movable frame, the second positioning sleeve is fixed on the movable frame, and the driven shaft is fixed, so that the driven roller can realize the processing work of a workpiece to be processed, and meanwhile, when the driven roller needs to be dismounted, only the rotary ring needs to be rotated in the opposite direction, thereby being beneficial to improving the convenience of dismounting the driven shaft and the driven roller;

3. The positioning spring is arranged in the first positioning sleeve, the positioning spring is always in a stretching state, acting force is applied to the first positioning rod, the first positioning rod is prevented from sliding out of the positioning groove due to vibration of the device in the machining process, the fixing of the position adjusting mechanism is relieved, the machining work of a workpiece to be machined is affected, acting force is applied to the first positioning rod, the positioning spring is stretched, the supporting rod is clamped on the first positioning sleeve, the fixing of the position adjusting mechanism is relieved, and the disassembly and the overhaul of the position adjusting mechanism are facilitated.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present application.

Fig. 2 is a left side view of an embodiment of the present application.

Fig. 3 is a cross-sectional view taken along A-A in fig. 2.

Fig. 4 is a schematic structural diagram of a first positioning mechanism according to an embodiment of the application.

Fig. 5 is a front view of the first positioning mechanism according to the embodiment of the present application.

Fig. 6 is a cross-sectional view taken along the direction B-B in fig. 5.

Fig. 7 is a schematic structural diagram of a second positioning mechanism according to an embodiment of the application.

Fig. 8 is a front view of a second positioning mechanism according to an embodiment of the present application.

FIG. 9 is a cross-sectional view taken along the direction C-C in FIG. 8

Reference numerals illustrate: 1. a base; 11a, a clamping groove; 12a, a support frame chute; 2. a support frame; 3. a drive roll; 4. driven roller; 5. a driving motor; 6. a position adjusting mechanism; 61. an adjusting seat; 611. a clamping block; 62. a hydraulic cylinder; 63. a moving rack; 631. a movable frame positioning hole; 632. a movable frame positioning groove; 7. a first positioning mechanism; 71. a first positioning sleeve; 711. a positioning sleeve chute; 712. a support rod chute; 72. a first positioning rod; 73. a positioning spring; 74. a support rod; 8. an output shaft; 9. a cross universal joint; 91. a driving shaft clamping groove; 10. a driving shaft; 11. a second positioning mechanism; 111. a second positioning sleeve; 1111. a slide hole; 112. a swivel; 1121. an arc-shaped groove; 113. a second positioning rod; 114. a rotating rod; 115. inserting blocks; 12. a driven shaft; 121. and a driven shaft inserting groove.

Detailed Description

In the description of the present application, it should be noted that, unless explicitly stated and limited otherwise, the terms "disposed" and "connected" should be interpreted broadly, and for example, they may be fixedly connected, detachably connected, or integrally connected; either directly or indirectly via an intermediate medium, or in communication with each other or in interaction with each other. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

In this specification, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, and thus features defining "first," "second," or the like, may explicitly or implicitly include one or more of such features.

The embodiment of the application discloses a cold rolling mill with a roller spacing adjusting structure.

As shown in fig. 1, the cold rolling mill provided with the roll gap adjustment structure includes a base 1, a support frame 2, a drive roll 3, a driven roll 4, a drive motor 5, a position adjustment mechanism 6, and a first positioning mechanism 7. The support frame 2 is installed in the base 1, the drive roll 3 rotates to be connected on the support frame 2, the output shaft 8 of the driving motor 5 is connected with the drive roll 3, the driven roll 4 is installed on the position adjustment mechanism 6, the position adjustment mechanism 6 is installed on the base 1, the first positioning mechanism 7 is installed on the base 1 and used for limiting and fixing the position adjustment mechanism 6, and the driven roll 4 and the drive roll 3 are all common cold rolls in the market.

As shown in fig. 1 and 3, in the embodiment of the present application, the device further includes an output shaft 8, a cross universal joint 9 and a driving shaft 10, the cross universal joint 9 is provided with two, the two cross universal joints 9 are respectively installed at two ends of the output shaft 8, the driving motor 5 is in driving connection with the output shaft 8 through the cross universal joint 9 at one end of the output shaft 8, the output shaft 8 is disposed through the supporting frame 2 through the cross universal joint 9 at the other end, the cross universal joint 9 is provided with a driving shaft clamping groove 91, one end of the driving shaft 10 is clamped in the driving shaft clamping groove 91, the other end of the driving shaft 10 is rotationally connected to the supporting frame 2, so that the driving shaft 10 can rotate along with the rotation of the output shaft 8, the driving roller 3 is sleeved on the driving shaft 10 and fixedly connected with the driving shaft 10, the supporting frame sliding grooves 12a are provided on the side walls at two sides of the base 1 corresponding to the supporting frame 2, the supporting frame 2 is slidingly connected in the supporting frame sliding grooves 12a, and the height of the driving roller 3 can be adjusted by adding a spacer at the bottom of the supporting frame 2.

As shown in fig. 1 and 2, the position adjusting mechanism 6 includes an adjusting seat 61, hydraulic cylinders 62 and a moving frame 63, the two hydraulic cylinders 62 are provided with two, the two hydraulic cylinders 62 are respectively installed at two sides of the upper end face of the adjusting seat 61, the piston rods of the hydraulic cylinders 62 penetrate through the adjusting seat 61, the moving frame 63 is connected with the piston rods of the hydraulic cylinders 62, clamping grooves 11a are formed in the side walls of two sides of the base 1, two sides of the moving frame 63 are respectively clamped in the two clamping grooves 11a, the moving frame 63 can move relative to the clamping grooves 11a, a clamping block 611 is integrally formed at two sides of the lower end face of the adjusting seat 61 corresponding to the clamping grooves 11a, the clamping block 611 is preferably arc-shaped, and the clamping block 611 is prevented from being inserted into the clamping grooves 11 a.

As shown in fig. 3 to 6, the first positioning mechanism 7 is provided with four first positioning mechanisms 7, the first positioning mechanisms 7 are respectively mounted on the side walls of the base 1 at two sides of the clamping groove 11a, the first positioning mechanisms 7 comprise a first positioning sleeve 71, a first positioning rod 72, a positioning spring 73 and a supporting rod 74, the first positioning sleeve 71 is welded on the base 1, a positioning sleeve sliding groove 711 penetrating through the first positioning sleeve 71 is formed in the first positioning sleeve 71, the first positioning rod 72 is slidably connected in the positioning sleeve sliding groove 711, a base through hole is formed in the side wall of the base 1 corresponding to the first positioning rod 72, one end of the first positioning rod 72 can penetrate through the base through hole and extend into the base 1, a positioning rod positioning groove is formed in the side wall of the adjusting seat 61 corresponding to the first positioning rod 72, and the first positioning rod 72 can be clamped in the positioning rod positioning groove to limit and fix the adjusting seat 61.

The positioning spring 73 is arranged in the first positioning sleeve 71, one end of the positioning spring 73 is fixedly connected with the inner side wall of the first positioning sleeve 71, the other end of the positioning spring 73 is fixedly connected with the first positioning rod 72, the positioning spring 73 is always in a stretching state, the supporting rod 74 penetrates through the first positioning rod 72 and is fixedly connected with the first positioning rod 72, two supporting rod sliding grooves 712 are symmetrically formed in the first positioning sleeve 71 corresponding to the two ends of the supporting rod 74, the supporting rod 74 can slide relative to the supporting rod sliding grooves 712, and the supporting rod 74 can be clamped at the end part of the first positioning sleeve 71.

As shown in fig. 7 to 9, in the embodiment of the present application, the apparatus further includes a second positioning mechanism 11 and a driven shaft 12, two second positioning mechanisms 11 are provided, two second positioning mechanisms 11 are respectively installed at two ends of the driven shaft 12, the second positioning mechanism 11 includes a second positioning sleeve 111, a swivel 112, a second positioning rod 113 and a rotating rod 114, the driven roller 4 is sleeved on the driven shaft 12 and fixedly connected with the driven shaft 12, an insert block 115 is installed on the second positioning sleeve 111, two ends of the driven shaft 12 are provided with a driven shaft insert groove 121 corresponding to the insert block 115, the insert block 115 can be inserted in the driven shaft insert groove 121, the driven shaft 12 can rotate relative to the second positioning sleeve 111, three slide holes 1111 are provided on the side wall of the second positioning sleeve 111 corresponding to the second positioning rod 113, three slide holes 1111 are equidistantly provided on the circumferential portion of the second positioning sleeve 111, an included angle between every two slide holes 1111 is 120 ° relative to the center of the second positioning sleeve 111, and the second positioning rod 113 is slidingly connected in the slide holes 1111.

The inside cavity that is provided with of second locating sleeve 111, bull stick 114 one end sliding connection is on the cavity inside wall, the bull stick 114 other end wears out second locating sleeve 111 setting, and bull stick 114 can rotate relative second locating sleeve 111, swivel 112 coaxial rotation connects on bull stick 114, be provided with three arc groove 1121 on the swivel 112 corresponding to second locating lever 113, the distance of arc groove 1121 one end and swivel 112 centre of a circle is farther than the distance of the other end and swivel 112 centre of a circle, second locating lever 113 sets up in the cavity one end and passes through bolt sliding connection in arc groove 1121, when second locating lever 113 sets up in the cavity one end and slides to arc groove 1121 and be close one end in the centre of a circle of swivel 112, the shrink of second locating lever 113 other end is in the slide hole 1111, when second locating lever 113 sets up one end in the cavity one end and slides to arc groove 1121 and be far away from the centre of a circle, the second locating lever 113 other end wears out slide hole 1111 and extends to the setting outside second locating sleeve 111.

The two side walls of the movable frame 63 are provided with movable frame locating holes 631 corresponding to the second locating sleeves 111, the second locating sleeves 111 are clamped in the movable frame locating holes 631, and the inner side walls of the movable frame locating holes 631 are provided with three movable frame locating grooves 632 corresponding to the second locating rods 113, so that the rotary rods 114 can be rotated to drive the rotary rings 112, the second locating rods 113 extend to the second locating sleeves 111 to be clamped in the movable frame locating grooves 632, and the driven roller 4 is arranged on the movable frame 63.

The implementation principle of the cold rolling mill with the roller spacing adjusting structure provided by the embodiment of the application is as follows: when a workpiece to be processed is required, the gasket arranged under the support frame 2 is adjusted, the support frame 2 moves along the support frame sliding groove 12a, the height of the driving roller 3 is adjusted, the hydraulic cylinder 62 drives the movable frame 63 to move along the clamping groove 11a, and the gap between the driven roller 4 and the driving roller 3 is adjusted, so that the rolling line of the roller is adjusted, the distance between the driven roller 4 and the driving roller 3 is adjusted to a proper size to match with workpieces to be processed with different sizes, and the driving motor 5 is started to drive the driving roller 3 to process.

When the roller needs to be disassembled and overhauled, acting force is applied to the first positioning rod 72, so that the first positioning rod 72 slides relative to the first positioning sleeve 71 and stretches the positioning spring 73, the supporting rod 74 is clamped at the end part of the first positioning sleeve 71, positioning fixation of the position adjusting mechanism 6 is released, the position adjusting mechanism 6 and the driven roller 4 are taken down from the base 1, the position adjusting mechanism 6 can be disassembled and overhauled, the rotating rod 114 drives the rotating ring 112, one end of the second positioning rod 113 is arranged in the cavity and slides relative to the arc-shaped groove 1121, the other end of the second positioning rod 113 is contracted into the second positioning sleeve 111, the clamping relation between the second positioning sleeve 111 and the movable frame 63 is released, the driven roller 4 is taken out, overhauling and replacement can be performed on the driven roller 4, the cross universal joint 9 is disassembled, the cross universal joint 9 is pulled out from the support frame 2, and the driving roller 3 can be taken out for overhauling and replacement, and the position adjusting mechanism 6 and the roller are disassembled conveniently by workers.

The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.

Claims (10)

1. A cold rolling mill that possesses roll interval adjustment structure, its characterized in that: including base (1), support frame (2), drive roll (3), driven voller (4) and driving motor (5), support frame (2) are installed in base (1), drive roll (3) are installed on support frame (2), driving motor (5) output shaft (8) with drive roll (3) are connected, be provided with position adjustment mechanism (6) on base (1), driven voller (4) are installed on position adjustment mechanism (6), install on base (1) be used for with position adjustment mechanism (6) can dismantle connect first positioning mechanism (7) on base (1).

2. The cold rolling mill having a roll gap adjustment structure according to claim 1, wherein: the position adjusting mechanism (6) comprises an adjusting seat (61), a hydraulic cylinder (62) and a moving frame (63), wherein a clamping block (611) is arranged on the adjusting seat (61), a clamping groove (11 a) is formed in the side wall of the base (1) along the height direction, the clamping block (611) is clamped in the clamping groove (11 a), the hydraulic cylinder (62) is arranged on the adjusting seat (61), the moving frame (63) is fixedly connected with a piston rod of the hydraulic cylinder (62), the moving frame (63) is slidably connected in the clamping groove (11 a), and the first positioning mechanism (7) is used for fixing the adjusting seat (61).

3. The cold rolling mill having a roll gap adjustment structure according to claim 2, wherein: the movable frame (63) is rotationally connected with a driven shaft (12), the driven shaft (4) is installed on the driven shaft (12), two ends of the driven shaft (12) are rotationally connected with second positioning mechanisms (11), movable frame positioning holes (631) are formed in the movable frame (63) corresponding to the second positioning mechanisms (11), and the second positioning mechanisms (11) can be clamped in the movable frame positioning holes (631).

4. A cold rolling mill having a roll gap adjustment structure according to claim 3, characterized in that: the second positioning mechanism (11) comprises a second positioning sleeve (111), a swivel (112) and a second positioning rod (113), an inserting block (115) is installed on the second positioning sleeve (111), a driven shaft inserting groove (121) is formed in the end portion of the driven shaft (12) corresponding to the inserting block (115), the inserting block (115) is inserted into the driven shaft inserting groove (121), the swivel (112) is slidably connected into the second positioning sleeve (111), an arc-shaped groove (1121) is formed in the swivel (112), one end of the arc-shaped groove (1121) is farther than the other end of the swivel (112) in distance from the center of the swivel (112), one end of the second positioning rod (113) is slidably connected into the arc-shaped groove (1121), a sliding hole (1111) is formed in the side wall of the second positioning sleeve (111), the second positioning rod (113) is slidably connected into the sliding hole (1111), and the second positioning rod (113) is far away from the swivel (112) and can penetrate through the second positioning rod (112) to the second positioning rod (632).

5. The cold rolling mill having a roll gap adjustment structure according to claim 4, wherein: the arc-shaped grooves (1121) are formed in a plurality of, the arc-shaped grooves (1121) are formed in the circumferential position of the swivel (112), and the number and the positions of the second positioning rods (113), the sliding holes (1111) and the movable frame positioning grooves (632) correspond to the arc-shaped grooves (1121).

6. The cold rolling mill having a roll gap adjustment structure according to claim 4, wherein: still include bull stick (114), bull stick (114) with swivel (112) coaxial coupling, bull stick (114) one end is worn out second locating sleeve (111) lateral wall setting, just bull stick (114) can rotate relative second locating sleeve (111).

7. The cold rolling mill having a roll gap adjustment structure according to claim 1, wherein: the first positioning mechanisms (7) are provided with a plurality of first positioning mechanisms (7), the first positioning mechanisms (7) are respectively installed on side walls of two sides of the base (1), and the first positioning mechanisms (7) are symmetrically arranged.

8. The cold rolling mill having a roll gap adjustment structure according to claim 7, wherein: the first positioning mechanism (7) comprises a first positioning sleeve (71) and a first positioning rod (72), the first positioning sleeve (71) is arranged on the base (1), the positioning rod is slidably connected to the first positioning sleeve (71), a base (1) through hole is formed in the base (1) corresponding to the first positioning sleeve (71), a positioning rod positioning groove is formed in the position adjusting mechanism (6) corresponding to the base through hole, and the first positioning rod (72) can be clamped in the positioning rod positioning groove to position the position adjusting mechanism (6).

9. The cold rolling mill having a roll gap adjustment structure according to claim 8, wherein: still include positioning spring (73) and bracing piece (74), positioning spring (73) set up in first position sleeve (71), positioning spring (73) one end with first position sleeve (71) lateral wall is connected, positioning spring (73) other end with first positioning rod (72) are connected, positioning spring (73) belong to tensile state, bracing piece (74) set up on first positioning rod (72), bracing piece spout (712) have been seted up to corresponding on first position sleeve (71) bracing piece (74), bracing piece (74) sliding connection is in bracing piece spout (712).

10. The cold rolling mill having a roll gap adjustment structure according to claim 1, wherein: still include output shaft (8), cross universal joint (9) and driving shaft (10), cross universal joint (9) are provided with two, two cross universal joint (9) are installed respectively the both ends of output shaft (8), driving motor (5) with cross universal joint (9) of output shaft (8) one end are connected, driving shaft (10) rotate and connect on support frame (2), driving shaft (10) with cross universal joint (9) of output shaft (8) other end are connected, driving roll (3) are installed on driving shaft (10).