CN213103787U

CN213103787U - Rolling mill capable of automatically adjusting product size

Info

Publication number: CN213103787U
Application number: CN202021541631.1U
Authority: CN
Inventors: 刘毅; 周武; 陈云峰
Original assignee: Wuxi Pinxin Intelligent Electromechanical Technology Co ltd
Current assignee: Wuxi Pinxin Intelligent Electromechanical Technology Co ltd
Priority date: 2020-07-29
Filing date: 2020-07-29
Publication date: 2021-05-04
Anticipated expiration: 2030-07-29

Abstract

The utility model discloses a can rolling mill of automatically regulated product size relates to rolling mill product size and adjusts technical field, for solving current rolling mill to noble metal in the suppression, when needing to adjust noble metal's suppression thickness, generally all adjust through adjusting the roll gap, and all need artifical manual rotation screw rod to adjust when adjusting the roll gap, consequently expend the problem of strength when manual regulation. The fixed fixing base that is provided with in top of base, the fixed first supporting box that is provided with in one side of fixing base top, the fixed second supporting box that is provided with of opposite side of fixing base top, first supporting box all is provided with first sliding seat with the inside top of second supporting box, first supporting box all is provided with the second sliding seat with the inside below of second supporting box, the both sides outer wall of first sliding seat and second sliding seat respectively with the inner wall laminating and the sliding connection of first supporting box and second supporting box both sides.

Description

Rolling mill capable of automatically adjusting product size

Technical Field

The utility model relates to a rolling mill product size adjusts technical field, specifically is a rolling mill that can automatically regulated product size.

Background

The rolling mill is equipment for realizing the metal rolling process, generally refers to equipment for completing the whole process of rolled material production, and in the manufacture of precious metals, the rolling mill is required to perform pressing adjustment on the thickness of the precious metals so as to obtain the required shape and thickness, and the pressing thickness of the precious metals is generally required to meet the size requirement through roll gap adjustment.

When the existing rolling mill is used for pressing precious metals, the pressing thickness of the precious metals is required to be adjusted, the precious metals are generally adjusted by adjusting a roll gap, and the roll gap is adjusted by manually rotating a screw rod, so that labor is consumed during manual adjustment; therefore, the existing requirements are not met, and a rolling mill capable of automatically adjusting the size of a product is provided for the requirements.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a can automatically regulated product size's rolling mill to solve the current rolling mill that proposes in the above-mentioned background art and to noble metal in the suppression, when needing to adjust noble metal's suppression thickness, generally all adjust through adjusting the roll gap, and all need artifical manual rotation screw rod to adjust when adjusting the roll gap, consequently consume the problem of strength when manual regulation.

In order to achieve the above object, the utility model provides a following technical scheme: a rolling mill capable of automatically adjusting the size of a product comprises a base, wherein a fixed seat is fixedly arranged above the base, a first supporting box is fixedly arranged on one side above the fixed seat, a second supporting box is fixedly arranged on the other side above the fixed seat, the upper parts of the inner parts of the first supporting box and the second supporting box are both provided with a first sliding seat, the lower parts of the inner parts of the first supporting box and the second supporting box are both provided with a second sliding seat, the outer walls of the two sides of the first sliding seat and the second sliding seat are respectively jointed and connected with the inner walls of the two sides of the first supporting box and the second supporting box in a sliding way, the front ends and the rear ends of the first sliding seat and the second sliding seat are respectively provided with a moving mechanism, a compression roller mechanism is arranged between the first supporting box and the second supporting box, the top of first supporting box and second supporting box is provided with control mechanism, movable groove has been seted up to first supporting box and second supporting box one side in opposite directions.

Preferably, the moving mechanism comprises connecting seat, screw hole and two-way transmission screw rod, the connecting seat is provided with eight, eight the connecting seat is fixed connection respectively at the front end and the rear end of first sliding seat and second sliding seat, the screw hole is provided with eight, eight the inside at the connecting seat is seted up to the screw hole, two-way transmission screw rod is provided with four, four two-way transmission screw rod is located the inside of first supporting box and second supporting box respectively, and two-way transmission screw rod is located the front end and the rear end of first sliding seat and second sliding seat respectively, two-way transmission screw rod passes through screw hole and connecting seat threaded connection, and the both ends of two-way transmission screw rod are connected through bearing rotation with the upper and lower inner wall of first supporting box and second supporting box respectively.

Preferably, one end of the bidirectional transmission screw rod extends to the top of the outer portion of the first supporting box and the top of the outer portion of the second supporting box respectively, the bidirectional transmission screw rod is located on the outer wall of one end of the upper portion of the outer portion of the first supporting box and the outer wall of one end of the outer portion of the second supporting box, first gears are fixedly arranged on the outer wall of the rotating shaft respectively, the upper end faces of the first supporting box and the upper end face of the second supporting box are provided with rotating shafts, one ends of the rotating shafts are rotatably connected with the outer walls of the first supporting box and the second supporting box through bearings respectively, second gears are fixedly arranged on the outer wall of the rotating shafts and located between the first gears, the second gears are meshed with the first gears, first bevel gears are fixedly arranged at the other ends of the rotating shafts, the first bevel gears are located above the second gears, and positioning blocks are.

Preferably, the compression roller mechanism comprises compression roller body, fixed axle and mount pad, the fixed axle is provided with two, two the fixed axle is located respectively between first sliding seat and the second sliding seat, and the both ends of fixed axle all through the movable groove respectively with first sliding seat and second sliding seat fixed connection, fixed axle one end on the first sliding seat extends to one side of second supporting box, the one end of the fixed axle on the second sliding seat extends to one side of first supporting box, the mount pad is provided with two, two the mount pad is located one side of first supporting box and second supporting box respectively, and the mount pad is located the below of fixed axle one end respectively, a side end face of mount pad respectively with a side end face sliding connection of first supporting box and second supporting box.

Preferably, the top fixed mounting of mount pad has first brake motor, shaft coupling fixed connection is passed through with the one end of fixed axle to the output of first brake motor, one side of first brake motor is provided with the reduction gear, and reduction gear fixed mounting is on the outer wall of fixed axle one end.

Preferably, control mechanism comprises first supporting seat, second supporting seat, motor cabinet, second brake motor, positioning seat and dwang, first supporting seat fixed connection is in the top of first supporting box one side, second supporting seat fixed connection is in the top of second supporting box one side, the fixed motor cabinet that is provided with in one side of first supporting seat top, the top fixed mounting of motor cabinet has second brake motor, the positioning seat is provided with two, two the positioning seat is fixed connection respectively in the top of first supporting seat and second supporting seat, the dwang is located between the positioning seat, and the both ends of dwang pass through the bearing rotation with the positioning seat respectively and be connected.

Preferably, the fixed cone gear that has cup jointed on the outer wall of dwang, and the second cone gear is provided with two, two the second cone gear is connected with first bevel gear meshing respectively, the both ends difference end of dwang extends to the both sides of positioning seat, the dwang is located the fixed set screw that is provided with of one end of positioning seat one side, the fixed plate that is provided with in one side of second supporting seat top, set screw's one end extends to one side of fixed plate, threaded connection has the position sleeve on set screw's the outer wall, and the position sleeve is provided with two, two the position sleeve is located the both sides of fixed plate respectively, the other end and the second brake motor of dwang pass through shaft coupling fixed connection, the one end fixed mounting of dwang has the.

Preferably, the both sides of fixing base all are provided with the limiting plate, and limiting plate and base fixed connection, the constant head tank has been seted up to the inside of limiting plate, the fixed connecting screw that is provided with of one end of mount pad, connecting screw's one end is passed through the constant head tank and is extended to one side of limiting plate, threaded connection has fixed cover on connecting screw's the outer wall, the top of first supporting box and second supporting box inner wall is fixed respectively and is provided with the stopper.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a set up control mechanism, the moving mechanism, compression roller mechanism, first supporting box, the second supporting box, first sliding seat and second sliding seat, thereby make when needing to adjust the roll gap between two compression roller bodies, only need to start the second brake motor, the second brake motor rotates through dwang and second bevel gear, thereby second bevel gear passes through first bevel gear, axis of rotation and second gear drive first gear rotation, first gear drives two-way transmission screw rod and rotates, thereby make the connecting seat reciprocate through the principle of screw thread transmission, the connecting seat drives first sliding seat and second sliding seat and moves in opposite directions or opposite movement each other, thereby move two compression roller bodies, adjust the distance between the compression roller bodies, thereby reach the requirement of adjusting the product size, make when adjusting the product size more light, need not to manually rotate the screw rod and adjust, only need start the second brake motor and just can accomplish the operation to through setting up control mechanism, can drive the inside two-way transmission screw rod of first supporting box and second supporting box and rotate simultaneously through dwang and second bevel gear, thereby make the compression roller body remove and make and can keep the level, and through setting up four two-way transmission screw rods, be because the weight of compression roller body is overweight, thereby make the compression roller body more stable when removing through the transmission of four two-way transmission screw rods.

2. By arranging the fixing plate, the positioning sleeve, the positioning screw rod, the limiting plate, the connecting screw rod and the fixing sleeve, so that the positioning screw rod can be fixed through the positioning sleeve after the distance between the two compression roller bodies is adjusted, thereby fixing the rotating rod, fixing the second bevel gear after the rotating rod is fixed, fixing the two-way transmission screw rod by the second bevel gear through the first bevel gear, the first gear and the second gear, thereby fixing the position between the first sliding seat and the second sliding seat, avoiding the first sliding seat and the second sliding seat moving after the adjustment is finished, the connecting screw rod and the limiting plate can be fixed through the fixing sleeve, so that the position of the mounting seat is fixed, the position of the fixing shaft is fixed through the mounting seat, therefore, the first sliding seat and the second sliding seat are better fixed through the fixing sleeve and the positioning sleeve.

Drawings

FIG. 1 is a schematic view of the overall cross-sectional structure of the present invention;

FIG. 2 is a schematic view of a top-down structure of the first supporting box and the second supporting box of the present invention;

fig. 3 is a schematic top view of the first gear and the second gear of the present invention;

FIG. 4 is a schematic side view of the second supporting box and the movable trough of the present invention;

fig. 5 is a schematic diagram of a right-view structure of the limiting plate of the present invention;

fig. 6 is a side view schematic structural diagram of the first gear and the second gear of the present invention;

in the figure: 1. a base; 2. a fixed seat; 3. a first support box; 4. a second support box; 5. a first sliding seat; 6. a second sliding seat; 7. a moving mechanism; 8. a control mechanism; 9. a press roll mechanism; 10. a movable groove; 11. a first gear; 12. a rotating shaft; 13. a first bevel gear; 14. positioning a screw rod; 15. a fixing plate; 16. a positioning sleeve; 17. a limiting plate; 18. connecting a screw rod; 19. fixing a sleeve; 20. positioning blocks; 21. a limiting block; 22. a second gear; 23. positioning a groove; 701. a connecting seat; 702. a threaded hole; 703. a bidirectional transfer screw; 801. a first support base; 802. a second support seat; 803. a motor base; 804. a second brake motor; 805. positioning seats; 806. rotating the rod; 807. a second bevel gear; 901. a compression roller body; 902. a fixed shaft; 903. a mounting seat; 904. a first brake motor; 905. and a speed reducer.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-6, the present invention provides an embodiment: a rolling mill capable of automatically adjusting the size of a product comprises a base 1, a fixed seat 2 is fixedly arranged above the base 1, a first support box 3 is fixedly arranged on one side above the fixed seat 2, a second support box 4 is fixedly arranged on the other side above the fixed seat 2, first sliding seats 5 are respectively arranged above the inner parts of the first support box 3 and the second support box 4, second sliding seats 6 are respectively arranged below the inner parts of the first support box 3 and the second support box 4, the outer walls on the two sides of the first sliding seat 5 and the second sliding seat 6 are respectively attached to and slidably connected with the inner walls on the two sides of the first support box 3 and the second support box 4, moving mechanisms 7 are respectively arranged at the front end and the rear end of the first sliding seat 5 and the second sliding seat 6, a compression roller mechanism 9 is arranged between the first support box 3 and the second support box 4, a control mechanism 8 is arranged above the first support box 3 and the second support box 4, the movable groove 10 is formed in the opposite side of the first supporting box 3 and the second supporting box 4, and the movable groove 10 is formed, so that when the compression roller body 901 moves, the fixing shaft 902 can move in the movable groove 10, and the first supporting box 3 and the second supporting box 4 are prevented from affecting the movement of the fixing shaft 902.

Further, the moving mechanism 7 is composed of a connecting seat 701, a threaded hole 702 and two-way transfer screws 703, eight connecting seats 701 are provided, eight connecting seats 701 are fixedly connected to the front end and the rear end of the first sliding seat 5 and the second sliding seat 6, respectively, eight threaded holes 702 are provided, eight threaded holes 702 are opened in the connecting seat 701, four two-way transfer screws 703 are provided, four two-way transfer screws 703 are respectively located in the first supporting box 3 and the second supporting box 4, and two-way transfer screws 703 are respectively located at the front end and the rear end of the first sliding seat 5 and the second sliding seat 6, the two-way transfer screws 703 are in threaded connection with the connecting seat 701 through the threaded holes 702, and both ends of the two-way transfer screws 703 are rotatably connected with the upper and lower inner walls of the first supporting box 3 and the second supporting box 4 through bearings, by providing the two-way transfer screws 703, thereby enabling the principle of thread transfer, the first sliding seat 5 and the second sliding seat 6 can be moved towards or away from each other at the same time.

Further, one end of the bidirectional transmission screw 703 extends to the upper part of the outer part of the first support box 3 and the second support box 4, the outer walls of the ends of the bidirectional transmission screw 703, which are positioned at the upper part of the outer part of the first support box 3 and the second support box 4, are fixedly provided with a first gear 11, the upper end faces of the first support box 3 and the second support box 4 are provided with a rotating shaft 12, one end of the rotating shaft 12 is rotatably connected with the outer walls of the first support box 3 and the second support box 4 through a bearing, the outer wall of the rotating shaft 12 is fixedly provided with a second gear 22, the second gear 22 is positioned between the first gears 11, the second gear 22 is in meshing connection with the first gear 11, the other end of the rotating shaft 12 is fixedly provided with a first bevel gear 13, the first bevel gear 13 is positioned above the second gear 22, the outer wall of the bidirectional transmission screw 703 is fixedly provided with a positioning block 20, through the positioning block 20, the positioning block 20 is located in the middle of the bidirectional transfer screw 703, so that the positioning block 20 has a limiting effect on the movement of the connecting seat 701, and when one end of the connecting seat 701 contacts the positioning block 20, the two pressing roller bodies 901 are attached to each other.

Further, the platen roller mechanism 9 is composed of a platen roller body 901, two fixing shafts 902 and two mounting seats 903, the two fixing shafts 902 are respectively located between the first sliding seat 5 and the second sliding seat 6, and both ends of the fixing shaft 902 are respectively fixedly connected with the first sliding seat 5 and the second sliding seat 6 through the movable groove 10, one end of the fixing shaft 902 on the first sliding seat 5 extends to one side of the second supporting box 4, one end of the fixing shaft 902 on the second sliding seat 6 extends to one side of the first supporting box 3, the two mounting seats 903 are provided, the two mounting seats 903 are respectively located on one side of the first supporting box 3 and one side of the second supporting box 4, and the mounting seats 903 are respectively located below one end of the fixing shaft 902, one side end face of the mounting seat 903 is respectively slidably connected with one side end faces of the first supporting box 3 and the second supporting box 4, by slidably connecting the mounting seats 903 with one side end faces of the first supporting box 3 and the second supporting box 4, so that when the two roller bodies 901 move, the mounting seat 903 moves along with the fixed shaft 902 and the first brake motor 904.

Further, the top fixed mounting of mount pad 903 has first brake motor 904, and shaft coupling fixed connection is passed through with the one end of fixed axle 902 to the output of first brake motor 904, and one side of first brake motor 904 is provided with reduction gear 905, and reduction gear 905 fixed mounting controls the rotational speed of fixed axle 902 through reduction gear 905 on the outer wall of fixed axle 902 one end to make compression roller body 901 can slowly rotate and carry out suppression work.

Further, the control mechanism 8 is composed of a first supporting seat 801, a second supporting seat 802, a motor seat 803, a second braking motor 804, a positioning seat 805 and a rotating rod 806, the first supporting seat 801 is fixedly connected above one side of the first supporting box 3, the second supporting seat 802 is fixedly connected above one side of the second supporting box 4, the motor seat 803 is fixedly arranged on one side above the first supporting seat 801, the second braking motor 804 is fixedly arranged above the motor seat 803, by arranging the second brake motor 804, when the second brake motor 804 is stopped, the second brake motor 804 can be immediately braked and stopped, therefore, the roll gap between the roll body 901 is adjusted more accurately, the two positioning seats 805 are arranged, the two positioning seats 805 are respectively and fixedly connected above the first supporting seat 801 and the second supporting seat 802, the rotating rod 806 is located between the positioning seats 805, and two ends of the rotating rod 806 are respectively and rotatably connected with the positioning seats 805 through bearings.

Further, the outer wall of the rotating rod 806 is fixedly sleeved with two second bevel gears 807, the two second bevel gears 807 are respectively engaged with the first bevel gear 13, two ends of the rotating rod 806 respectively extend to two sides of the positioning seat 805, one end of the rotating rod 806, which is located at one side of the positioning seat 805, is fixedly provided with a positioning screw 14, one side above the second supporting seat 802 is fixedly provided with a fixing plate 15, one end of the positioning screw 14 extends to one side of the fixing plate 15, the outer wall of the positioning screw 14 is in threaded connection with two positioning sleeves 16, the two positioning sleeves 16 are respectively located at two sides of the fixing plate 15, the two positioning sleeves 16 are in threaded connection and locked with the positioning screw 14, one sides of the two positioning sleeves 16 are respectively attached to one side of the fixing plate 15, the positioning screw 14 is fixed, and the rotating rod 806 is fixed, thereby avoid dwang 806 to rotate and drive two-way transmission screw 703 and rotate for the removal appears in the position of first sliding seat 5 and second sliding seat 6, the other end and the second brake motor 804 of dwang 806 pass through shaft coupling fixed connection, and the one end fixed mounting of dwang 806 has reduction gear 905.

Further, the both sides of fixing base 2 all are provided with limiting plate 17, and limiting plate 17 and base 1 fixed connection, constant head tank 23 has been seted up to limiting plate 17's inside, the fixed connecting screw 18 that is provided with of one end of mount pad 903, connecting screw 18's one end is passed through constant head tank 23 and is extended to one side of limiting plate 17, threaded connection has fixed cover 19 on connecting screw 18's the outer wall, the top of first supporting box 3 and second supporting box 4 inner wall is fixed respectively and is provided with stopper 21, through setting up stopper 21, stopper 21 can play spacing effect when removing first sliding seat 5, hit the top inner wall of first supporting box 3 and second supporting box 4 when avoiding first sliding seat 5 to move upwards.

The working principle is as follows: when the roll is used, when the distance between the two roll bodies 901 needs to be adjusted, only the second brake motor 804 needs to be started, the second brake motor 804 drives the rotating rod 806 to rotate through the coupler, and the rotating speed of the rotating rod 806 is reduced through the speed reducer 905, then the rotating rod 806 drives the first bevel gear 13 to rotate through the second bevel gear 807, the first bevel gear 13 drives the rotating shaft 12 to rotate, the rotating shaft 12 drives the first gears 11 on both sides to rotate in the same direction through the second gear 22, so that under the driving of the first gears 11, the two bidirectional transmission screws 703 inside the first supporting box 3 and the second supporting box 4 rotate in the same direction, because the connecting seat 701 is in threaded connection with the bidirectional transmission screws 703, and the outer walls on both sides of the first sliding seat 5 and the second sliding seat 6 are attached and in sliding connection with the inner walls on both sides of the first supporting box 3 and the second supporting box 4, the first sliding seat 5 and the second sliding seat 6 can position the connecting seat 701, so that the connection seat 701 cannot rotate along with the rotation of the bidirectional transmission screw 703, the principle of screw thread transmission can make the bidirectional transmission screw 703 and the connection seat 701 drive the first sliding seat 5 and the second sliding seat 6 to move towards each other or move in opposite directions, so that the first sliding seat 5 and the second sliding seat 6 can drive the two fixing shafts 902 to move towards each other or move in opposite directions, the two fixing shafts 902 can move in the movable groove 10 at the same time, and the fixing shafts 902 drive the two pressing roller bodies 901 to move, thereby adjusting the distance between the two pressing roller bodies 901, while the two pressing roller bodies 901 move, the mounting seat 903 can also slide on the outer walls of one sides of the first supporting box 3 and the second supporting box 4, the connection screw 18 can move in the positioning groove 23, and then after the adjustment is completed, the second brake motor 804 is stopped, and the second brake motor 804 can immediately brake and stop, so that the distance between the two roller bodies 901 reaches the required size, then the fixing sleeve 19 is in threaded connection and locked with the connecting screw 18, so that the fixing sleeve 19 is attached to one side of the limiting plate 17, so that the position of the mounting seat 903 is fixed, the mounting seat 903 can fix the positions of the first brake motor 904 and the fixing shaft 902, so that the positions of the first sliding seat 5 and the second sliding seat 6 are fixed, then the two positioning sleeves 16 are in threaded connection and locked with the positioning screw 14, one sides of the two positioning sleeves 16 are respectively attached to one side of the fixing plate 15, the positioning screw 14 is fixed, so that the rotating rod 806 is fixed, the rotating rod 806 is prevented from rotating so as to drive the bidirectional transmission screw 703 to rotate, so that the positions of the first sliding seat 5 and the second sliding seat 6 can be fixed, then the first brake motor 904 is started, and the fixing shaft 902 is respectively in rotational connection with the first sliding seat 5 and the second sliding seat 6 through bearings, thus, the two roll bodies 901 are rotated by the fixed shaft 902, and the fixed shaft 902 is slowly rotated by the speed reducer 905, thereby performing the pressing work.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. A rolling mill capable of automatically adjusting the size of a product comprises a base (1) and is characterized in that: a fixed seat (2) is fixedly arranged above the base (1), a first supporting box (3) is fixedly arranged on one side above the fixed seat (2), a second supporting box (4) is fixedly arranged on the other side above the fixed seat (2), first sliding seats (5) are respectively arranged above the interiors of the first supporting box (3) and the second supporting box (4), second sliding seats (6) are respectively arranged below the interiors of the first supporting box (3) and the second supporting box (4), the outer walls of the two sides of the first sliding seat (5) and the second sliding seat (6) are respectively attached to and in sliding connection with the inner walls of the two sides of the first supporting box (3) and the second supporting box (4), a moving mechanism (7) is respectively arranged at the front end and the rear end of the first sliding seat (5) and the second sliding seat (6), and a pressure roller mechanism (9) is arranged between the first supporting box (3) and the second supporting box (4), the upper portions of the first supporting box (3) and the second supporting box (4) are provided with control mechanisms (8), and one sides of the first supporting box (3) and the second supporting box (4) in the opposite direction are provided with movable grooves (10).

2. A rolling mill with automatic product size adjustment according to claim 1, characterized in that: moving mechanism (7) comprises connecting seat (701), screw hole (702) and two-way transfer screw (703), connecting seat (701) is provided with eight, eight connecting seat (701) is fixed connection respectively in the front end and the rear end of first sliding seat (5) and second sliding seat (6), screw hole (702) is provided with eight, eight screw hole (702) are seted up in the inside of connecting seat (701), two-way transfer screw (703) are provided with four, four two-way transfer screw (703) are located the inside of first supporting box (3) and second supporting box (4) respectively, and two-way transfer screw (703) are located the front end and the rear end of first sliding seat (5) and second sliding seat (6) respectively, two-way transfer screw (703) are through screw hole (702) and connecting seat (701) threaded connection, and the both ends of two-way transfer screw (703) are interior from top to bottom with first supporting box (3) and second supporting box (4) respectively The walls are rotatably connected by bearings.

3. A rolling mill with automatic product size adjustment according to claim 2, characterized in that: one end of the bidirectional transmission screw rod (703) extends to the upper part of the outer parts of the first supporting box (3) and the second supporting box (4) respectively, the bidirectional transmission screw rod (703) is positioned on the outer walls of one end of the outer parts of the first supporting box (3) and the second supporting box (4) and is fixedly provided with a first gear (11) respectively, the upper end faces of the first supporting box (3) and the second supporting box (4) are provided with a rotating shaft (12), one end of the rotating shaft (12) is rotatably connected with the outer walls of the first supporting box (3) and the second supporting box (4) through bearings respectively, the outer wall of the rotating shaft (12) is fixedly provided with a second gear (22), the second gear (22) is positioned between the first gears (11), the second gear (22) is meshed with the first gear (11), the other end of the rotating shaft (12) is fixedly provided with a first bevel gear (13), and the first bevel gear (13) is positioned above the second gear (22), and a positioning block (20) is fixedly arranged on the outer wall of the bidirectional transfer screw (703).

4. A rolling mill with automatic product size adjustment according to claim 1, characterized in that: the compression roller mechanism (9) is composed of a compression roller body (901), two fixing shafts (902) and two installation seats (903), wherein the two fixing shafts (902) are respectively positioned between a first sliding seat (5) and a second sliding seat (6), two ends of each fixing shaft (902) are respectively and fixedly connected with the first sliding seat (5) and the second sliding seat (6) through movable grooves (10), one end of each fixing shaft (902) on the first sliding seat (5) extends to one side of the second supporting box (4), one end of each fixing shaft (902) on the second sliding seat (6) extends to one side of the first supporting box (3), the two installation seats (903) are respectively positioned on one side of the first supporting box (3) and one side of the second supporting box (4), and the installation seats (903) are respectively positioned below one end of each fixing shaft (902), and one side end face of the mounting seat (903) is in sliding connection with one side end face of the first supporting box (3) and one side end face of the second supporting box (4) respectively.

5. A rolling mill with automatic product size adjustment according to claim 4, characterized in that: the top fixed mounting of mount pad (903) has first brake motor (904), shaft coupling fixed connection is passed through with the one end of fixed axle (902) to the output of first brake motor (904), one side of first brake motor (904) is provided with reduction gear (905), and reduction gear (905) fixed mounting is on the outer wall of fixed axle (902) one end.

6. A rolling mill with automatic product size adjustment according to claim 1, characterized in that: the control mechanism (8) is composed of a first supporting seat (801), a second supporting seat (802), a motor seat (803), a second brake motor (804), a positioning seat (805) and a rotating rod (806), the first supporting seat (801) is fixedly connected above one side of the first supporting box (3), the second supporting seat (802) is fixedly connected above one side of the second supporting box (4), a motor seat (803) is fixedly arranged on one side above the first supporting seat (801), a second brake motor (804) is fixedly arranged above the motor base (803), two positioning seats (805) are arranged, the two positioning seats (805) are respectively and fixedly connected above the first supporting seat (801) and the second supporting seat (802), the rotating rod (806) is positioned between the positioning seats (805), and two ends of the rotating rod (806) are respectively connected with the positioning seat (805) in a rotating way through bearings.

7. A rolling mill with automatic adjustment of the dimensions of the product, according to claim 6, characterized in that: the outer wall of the rotating rod (806) is fixedly sleeved with two second bevel gears (807), the two second bevel gears (807) are respectively meshed with the first bevel gear (13), two ends of the rotating rod (806) respectively extend to two sides of the positioning seat (805), one end, located on one side of the positioning seat (805), of the rotating rod (806) is fixedly provided with a positioning screw (14), one side, located above the second supporting seat (802), of the fixing plate (15) is fixedly provided, one end of the positioning screw (14) extends to one side of the fixing plate (15), the outer wall of the positioning screw (14) is in threaded connection with two positioning sleeves (16), the two positioning sleeves (16) are respectively located on two sides of the fixing plate (15), and the other end of the rotating rod (806) is fixedly connected with the second brake motor (804) through a coupler, and a speed reducer (905) is fixedly arranged at one end of the rotating rod (806).

8. A rolling mill with automatic product size adjustment according to claim 4, characterized in that: the utility model discloses a fixing device for the automobile seat, including fixing base (2), limiting plate (17) and base (1) fixed connection, constant head tank (23) have been seted up to the inside of limiting plate (17), the fixed connecting screw rod (18) that are provided with of one end of mount pad (903), the one end of connecting screw rod (18) is passed through constant head tank (23) and is extended to one side of limiting plate (17), threaded connection has fixed cover (19) on the outer wall of connecting screw rod (18), the top of first supporting box (3) and second supporting box (4) inner wall is fixed stopper (21) that is provided with respectively.