CN112705781B - Pinch roll device - Google Patents
Pinch roll device Download PDFInfo
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- CN112705781B CN112705781B CN202011537517.6A CN202011537517A CN112705781B CN 112705781 B CN112705781 B CN 112705781B CN 202011537517 A CN202011537517 A CN 202011537517A CN 112705781 B CN112705781 B CN 112705781B
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- pinch roll
- frame
- jackscrew
- lower pinch
- roll body
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D33/00—Accessories for shearing machines or shearing devices
- B23D33/02—Arrangements for holding, guiding, and/or feeding work during the operation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D33/00—Accessories for shearing machines or shearing devices
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- Mechanical Engineering (AREA)
- Rolls And Other Rotary Bodies (AREA)
Abstract
The invention relates to the technical field of shearing equipment, and provides a pinch roll device which comprises a lower tool rest, a rack, an upper pinch roll assembly and a lower pinch roll assembly, wherein the lower tool rest is arranged on the rack; the connecting frame is connected with the frame boss through a screw; the connecting frame is connected with the rear end of the lower pinch roll body; the rack boss is arranged below the connecting frame and connected with the rack; the lower end of the jackscrew is fixed on the boss of the frame in a threaded connection mode, and the upper end of the jackscrew is abutted against the bottom of the connecting frame; the connecting flange is installed on the jackscrew and is connected with the connecting frame through a first connecting mechanism. Through setting up first fixing device, with the rear end and the frame fixed connection of pinch roll body down, just so make at the in-process of pressurization pinch roll steel sheet, eliminated the low nose tilt tail phenomenon of pinch roll down, guaranteed the levelness of pinch roll down, prevent that the pinch force from forming the torque to the steel sheet and causing the steel sheet off tracking when carrying the steel sheet.
Description
Technical Field
The invention relates to the technical field of shearing equipment, in particular to a pinch roll device.
Background
When the roll-cutting type double-sided shear shears the steel plate, the pinch roll device on the double-sided shear body plays a vital role, the pinch roll device plays a role in the double-sided shear in clamping the sheared steel plate and conveying the steel plate to be sheared or sheared, and the shearing requirement of the edge of the steel plate is guaranteed. However, in the process of conveying the steel plate, the traditional pinch roll device often has the phenomenon of steel plate deviation, and then the steel plate is staggered in the shearing process, and the shearing quality of the steel plate is reduced. The steel plate misalignment not only needs manual repair, and the labor intensity of workers is increased, but also the steel plate with serious misalignment is sheared or scrapped again, and the production efficiency of equipment and the yield of the steel plate are reduced.
Disclosure of Invention
The invention aims to provide a pinch roll device to prevent the steel plate from deviating in the steel plate conveying process.
The technical scheme adopted by the invention for solving the technical problems is as follows: the pinch roll device comprises a lower tool rest, a rack, an upper pinch roll assembly and a lower pinch roll assembly; the upper pinch roll assembly is arranged above the lower pinch roll assembly; the upper pinch roll assembly comprises an upper pinch roll roller, an upper pinch roll body and an upper pinch roll speed reduction motor which are sequentially arranged along the axial direction of the upper pinch roll assembly; the upper pinch roll body is arranged on the frame through a hinge; the lower pinch roll assembly comprises a lower pinch roll roller, a lower pinch roll body and a lower pinch roll speed reduction motor which are sequentially arranged along the axial direction of the lower pinch roll assembly; the lower pinch roll body is arranged on the rack through a hinge; a pinch roll hydraulic cylinder is arranged between the upper pinch roll body and the lower pinch roll body; the front end of the lower pinch roll body is supported on the rack through a first supporting device;
the rear end of the lower pinch roll body is connected with the frame through a first fixing device; the first fixing device comprises a connecting frame, a rack boss, a jackscrew, a connecting flange and a first connecting mechanism; the connecting frame is connected with the rear end of the lower pinch roll body; the rack boss is arranged below the connecting frame and connected with the rack; the lower end of the jackscrew is fixed on the boss of the frame in a threaded connection mode, and the upper end of the jackscrew is abutted against the bottom of the connecting frame; the connecting flange is installed on the jackscrew and connected with the connecting frame through a first connecting mechanism.
Further, the first connecting mechanism comprises a first stud fixed at the bottom of the connecting frame in a threaded connection mode and penetrating through the connecting flange downwards, and a first nut screwed at the lower end of the first stud; and a first through hole for the first stud to pass through is formed in the connecting flange.
Furthermore, the jackscrew is in threaded connection with a locking nut between the rack boss and the connecting flange.
Furthermore, the connecting frame is of a U-shaped structure with an opening at the side end; the rear end of the lower pinch roll body is arranged in the connecting frame, and the opening end of the connecting frame is combined with a connecting block.
Further, a gap is reserved between the bottom of the lower pinch roll body and the connecting frame; the connecting frame is provided with a mounting hole at the position below the lower pinch roll body; and an elastic device which is in butt fit with the bottom of the lower pinch roll body is arranged in the mounting hole.
Further, the elastic device comprises a top plate in butt fit with the bottom of the lower pinch roll body and a compression spring arranged below the top plate.
Further, the bottom of the top plate is provided with a guide rod extending downwards; the compression spring is sleeved on the guide rod.
Further, an internal thread hole matched with the jackscrew on the rack boss is of a through hole structure; and a locking device is arranged between the rack boss and the jackscrew.
Furthermore, the anti-loosening device comprises an anti-loosening ring arranged below the rack boss and an anti-loosening plate arranged on one side of the rack boss; the upper end of the anti-loosening plate is connected with a rack boss in a closing mode, and the lower end of the anti-loosening plate is connected with the anti-loosening ring in a welding mode; the inner hole of the anti-loosening ring is square, and the lower end of the jackscrew is provided with an anti-loosening block which extends downwards into the inner hole of the anti-loosening ring and is matched with the inner hole of the anti-loosening ring.
Furthermore, two upper pinch roll shell reference surfaces are arranged on the shell of the upper pinch roll body, and the upper pinch roll shell reference surfaces are cylindrical surfaces taking the axis of the pinch roll as the center line;
two lower pinch roll shell reference surfaces are arranged on the shell of the lower pinch roll body, and the lower pinch roll shell reference surfaces are cylindrical surfaces taking the axis of the lower pinch roll as a central line;
two frame reference surfaces are arranged on the frame at positions corresponding to the reference surfaces of the two lower pinch roll shells, and the frame reference surfaces are vertical planes perpendicular to the shear blade line; and a flat rule for measuring the verticality of the upper pinch roll roller and the lower pinch roll roller is arranged on the lower tool rest.
The invention has the beneficial effects that: according to the pinch roll device provided by the embodiment of the invention, the first fixing device is arranged to fixedly connect the rear end of the lower pinch roll body with the frame, so that the drooping head and tail tilting phenomenon of the lower pinch roll body is eliminated in the process of pressurizing and pinching a steel plate, the levelness of the lower pinch roll body is ensured, and the steel plate deviation caused by the torque formed on the steel plate by the pinch force during the steel plate conveying is prevented. Through setting up pinch roll casing reference surface, lower pinch roll casing reference surface, frame reference surface and flat rule, at the in-process of installation pinch roll device, can reduce the measurement degree of difficulty, reduce artifical measuring error, improve measurement accuracy, guarantee that pinch roll device's installation accuracy reaches the design requirement, and then prevent the phenomenon of steel sheet off tracking at the in-process of carrying the steel sheet.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below; it is obvious that the drawings in the following description are only some embodiments described in the present invention, and that other drawings can be obtained from these drawings by a person skilled in the art without inventive effort.
FIG. 1 is a schematic structural view of a pinch roll apparatus according to an embodiment of the present invention;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a left side view of FIG. 1;
fig. 4 is an enlarged view at a in fig. 1.
The reference numbers in the figures are: 1-lower tool rest, 2-frame, 3-upper pinch roll assembly, 4-lower pinch roll assembly, 5-connecting frame, 6-frame boss, 7-jackscrew, 8-connecting flange, 9-first stud, 10-first nut, 11-locking nut, 12-mounting hole, 13-top plate, 14-compression spring, 15-guide rod, 16-cover plate, 17-locking screw, 18-lower pinch roll shell datum plane, 19-frame datum plane, 20-flat ruler, 21-sheet conveying direction, 22-pinch roll hydraulic cylinder, 23-anti-loose ring, 24-anti-loose plate, 25-anti-loose block, 26-first supporting device, 31-upper pinch roll, 32-upper pinch roll body, 33-an upper pinch roll speed reducing motor, 34-an upper pinch roll shell reference surface, 41-a lower pinch roll, 42-a lower pinch roll body and 43-a lower pinch roll speed reducing motor.
Detailed Description
In order that those skilled in the art will better understand the present invention, the following further description is provided in conjunction with the accompanying drawings and examples. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. The embodiments and features of the embodiments of the invention may be combined with each other without conflict.
In order to better understand the improvement of the invention compared with the prior art, before the invention is explained in detail, the reason why the pinch roll device in the background art deviates the steel plate in the process of conveying the steel plate is analyzed. Research shows that when a pinch roll hydraulic cylinder in the pinch roll device is used for pressurizing a plate, a lower pinch roll roller is drooping as soon as being stressed, so that the levelness of the lower pinch roll roller has an error, and the pinch force forms a torque on a steel plate when the steel plate is conveyed, so that the steel plate is deviated. And the larger the pinch force is, the more serious the head drooping phenomenon of the lower pinch roll roller is, and the larger the error of the levelness of the lower pinch roll roller is.
FIG. 1 is a schematic structural view of a pinch roll apparatus according to an embodiment of the present invention; FIG. 2 is a top view of FIG. 1; fig. 3 is a left side view of fig. 1. In fig. 1 to 3, the X direction, the Y direction, and the Z direction are three mutually perpendicular directions; wherein, the X direction and the Y direction are horizontal directions, and the Z direction is a vertical direction; the Y direction is arranged parallel to the sheet conveying direction 21.
Referring to fig. 1 to 3, a pinch roll device provided by an embodiment of the present invention includes a lower tool rest 1, a frame 2, an upper pinch roll assembly 3, and a lower pinch roll assembly 4; the upper pinch roll assembly 3 is arranged above the lower pinch roll assembly 4; the upper pinch roll assembly 3 comprises an upper pinch roll roller 31, an upper pinch roll body 32 and an upper pinch roll speed reducing motor 33 which are sequentially arranged along the axial direction of the upper pinch roll assembly; the upper pinch roll body 32 is arranged on the frame 2 through a hinge; the lower pinch roll assembly 4 comprises a lower pinch roll roller 41, a lower pinch roll body 42 and a lower pinch roll speed reducing motor 43 which are sequentially arranged along the axial direction of the lower pinch roll assembly; the lower pinch roll body 42 is arranged on the frame 2 through a hinge; a pinch roll hydraulic cylinder 22 is arranged between the upper pinch roll body 32 and the lower pinch roll body 42; the front end of the lower pinch roll body 42 is supported on the frame 2 through the first supporting device 26;
the rear end of the lower pinch roll body 42 is connected with the frame 2 through a first fixing device; the first fixing device comprises a connecting frame 5, a rack boss 6, a jackscrew 7, a connecting flange 8 and a first connecting mechanism; the connecting frame 5 is connected with the rear end of the lower pinch roll body 42; the rack boss 6 is arranged below the connecting frame 5 and connected with the rack 2; the lower end of the jackscrew 7 is fixed on the rack boss 6 in a threaded connection mode, and the upper end of the jackscrew 7 is abutted against the bottom of the connecting frame 5; the connecting flange 8 is mounted on the jackscrew 7 and connected with the connecting frame 5 through a first connecting mechanism.
For convenience of description, the terms "left" and "right" are used in the left and right directions of the drawings, but do not limit the structure of the present invention.
Referring to fig. 1 and 2, in the pinch roll device provided by the embodiment of the invention, two racks 2 are arranged on the right side of a lower tool rest 1, the two racks 2 are respectively an inlet side rack and an outlet side rack, the two racks 2 are respectively held together with two ends of the lower tool rest 1, and each rack 2 is provided with an upper pinch roll assembly 3 and a lower pinch roll assembly 4 which are matched with each other.
The upper pinch roll assembly 3 comprises an upper pinch roll roller 31, an upper pinch roll body 32 and an upper pinch roll speed reducing motor 33 which are sequentially arranged along the axial direction of the upper pinch roll assembly; wherein, the axial direction of the upper pinch roll assembly 3 is arranged along the X direction. The upper pinch roll body 32 comprises an upper pinch roll shell and an upper pinch roll spindle rotatably arranged in the upper pinch roll shell; the upper pinch roll main shaft and the upper pinch roll roller 31 are coaxially arranged, the left end of the upper pinch roll main shaft is fixedly connected with the upper pinch roll roller 31, the right end of the upper pinch roll main shaft is in transmission connection with the upper pinch roll speed reduction motor 33, and the upper pinch roll main shaft is driven to rotate through the upper pinch roll speed reduction motor 33. The upper pinch roll body 32 is connected with the frame 2 through two hinges so that the upper pinch roll assembly 3 can be turned over relative to the frame 2.
The lower pinch roll assembly 4 comprises a lower pinch roll roller 41, a lower pinch roll body 42 and a lower pinch roll speed reducing motor 43 which are sequentially arranged along the axial direction of the lower pinch roll assembly; wherein, the axial direction of the lower pinch roll assembly 4 is arranged along the X direction. The lower pinch roll body 42 comprises a lower pinch roll shell and a lower pinch roll spindle rotatably arranged in the lower pinch roll shell; the lower pinch roll main shaft and the lower pinch roll roller 41 are coaxially arranged, the left end of the lower pinch roll main shaft is fixedly connected with the lower pinch roll roller 41, the right end of the lower pinch roll main shaft is in transmission connection with the lower pinch roll speed reduction motor 43, and the lower pinch roll main shaft is driven to rotate through the lower pinch roll speed reduction motor 43. The lower pinch roll body 42 is connected with the frame 2 through two hinges so that the lower pinch roll assembly 4 can be turned up and down relative to the frame 2.
Referring to fig. 1 to 3, the upper pinch roll assembly 3 is disposed above the lower pinch roll assembly 4. A pinch roll hydraulic cylinder 22 is arranged between the upper pinch roll body 32 and the lower pinch roll body 42, and the upper pinch roll assembly 3 is turned over around the hinged position up and down through the extension or contraction of the pinch roll hydraulic cylinder 22, so that the aim of controlling the upper pinch roll 31 to be close to or far away from the lower pinch roll 41 is fulfilled. When the pinch roll hydraulic cylinder 22 is in work, the upper pinch roll roller 31 is close to the lower pinch roll roller 41 and clamps the plate, and the plate is conveyed away through the rotation of the upper pinch roll roller 31 and the lower pinch roll roller 41.
Fig. 4 is an enlarged view at a in fig. 1. Referring to fig. 1 to 4, the front end of the lower pinch roll body 42 refers to the end connected to the lower pinch roll 41. The rear end of the lower pinch roll body 42 refers to the end in transmission connection with the lower pinch roll speed reducing motor 43.
The front end of the lower pinch roll body 42 is supported on the frame 2 by the first supporting device 26. The first support means 26 comprises a support boss and a support screw; the support boss is arranged below the lower pinch roll body 42 and fixedly connected with the frame 2, the lower end of the support screw is fixed on the support boss in a threaded connection mode, and the upper end of the support screw is abutted against the bottom of the front end of the lower pinch roll body 42 so as to support the front end of the lower pinch roll body 42. The purpose of adjusting the height of the front end of the lower pinch roll body 42 can be achieved by rotating the supporting screw.
The rear end of the lower pinch roll body 42 is connected with the frame 2 through a first fixing device. The first fixing device comprises a connecting frame 5, a rack boss 6, a jackscrew 7, a connecting flange 8 and a first connecting mechanism. The connecting frame 5 is connected with the rear end of the lower pinch roll body 42 through a fastener such as a bolt. The rack boss 6 is arranged below the connecting frame 5; the rack boss 6 can be fixedly connected with the rack 2 through a fastener such as a bolt; of course, the frame boss 6 may be directly formed on the frame 2, i.e. the frame boss 6 and the frame 2 are an integral piece.
The lower end of the jackscrew 7 is fixedly connected with the rack boss 6 in a threaded connection mode, the upper end of the jackscrew 7 is abutted to the bottom of the connecting frame 5, so that the rear end of the lower pinch roll body 42 can be supported through the jackscrew 7, the jackscrew 7 can be rotated to adjust the height of the rear end of the lower pinch roll body 42, and the purpose of controlling the levelness of the lower pinch roll 41 is achieved. For example, the jackscrew 7 comprises a shaft portion with external threads and a head portion fixedly connected with the shaft portion, wherein the size of the head portion is larger than that of the shaft portion; the rod part of the jackscrew 7 is in threaded connection with the boss 6 of the rack; the head of the jackscrew 7 is used for abutting fit with the bottom of the connecting frame 5.
The jackscrew 7 and the connecting flange 8 may be movably connected or fixedly connected, and are not specifically limited herein. In a preferred embodiment, the jackscrew 7 is movably mounted with a connecting flange 8 such that the connecting flange 8 can rotate around the axis of the jackscrew 7. For example, the connecting flange 8 is sleeved on the rod part of the jackscrew 7 and is limited by the head part of the jackscrew 7, and the center of the connecting flange 8 is provided with a central through hole for the rod part of the jackscrew 7 to pass through, and the size of the central through hole is smaller than that of the head part of the jackscrew 7. During installation, the connecting flange 8 is placed above the rack boss 6, the rod part of the jackscrew 7 penetrates through the central through hole of the connecting flange 8 downwards and then is in threaded connection with the rack boss 6, and the connecting flange 8 is limited through the head of the jackscrew 7 and the rack boss 6.
The connecting flange 8 is connected to the connecting frame 5 through a first connecting mechanism, so that the rear end of the lower pinch roll body 42 is stably connected to the frame 2.
According to the pinch roll device provided by the embodiment of the invention, the first fixing device is arranged to fixedly connect the rear end of the lower pinch roll body 42 with the rack 2, so that in the process of pressurizing and pinching a steel plate, the drooping head and tail tilting phenomenon of the lower pinch roll 41 is eliminated, the levelness of the lower pinch roll 41 is ensured, and the phenomenon that the pinch force forms torque on the steel plate when conveying the steel plate to cause the deviation of the steel plate is prevented. By arranging the jackscrew 7, when the levelness of the lower pinch roll 41 has errors, the levelness of the lower pinch roll 41 can be accurately adjusted by rotating the jackscrew 7, so that the adjustment efficiency of the levelness of the lower pinch roll 41 is improved.
According to the pinch roll device provided by the embodiment of the invention, the first connecting mechanism comprises a first stud 9 which is fixed at the bottom of the connecting frame 5 in a threaded connection mode and downwards penetrates through the connecting flange 8, and a first nut 10 which is screwed at the lower end of the first stud 9; the connecting flange 8 is provided with a first through hole for the first stud 9 to pass through.
Referring to fig. 4, the first connecting mechanism is mainly composed of a first stud 9 with threads at both ends and a first nut 10 matched with the first stud 9. The upper ends of the first studs 9 can be fixedly connected with the bottom of the connecting frame 5 in a threaded manner along the circumferential direction of the jackscrew 7, preferably evenly distributed, first through holes for the first studs 9 to pass through are arranged on the connecting flange 8, and first nuts 10 are screwed on the threads of the lower ends of the first studs 9 passing through the first through holes, so that the connecting flange 8 and the connecting frame 5 are firmly connected together after the first nuts 10 are screwed. Of course, the upper end of the first stud 9 and the connecting frame 5 may be connected by welding, and even the first stud 9 and the connecting frame 5 may be made as a single piece.
According to the pinch roll device provided by the embodiment of the invention, the jackscrew 7 is in threaded connection with the locking nut 11 positioned between the rack boss 6 and the connecting flange 8. When the jackscrew 7 is installed on the frame boss 6 and the adjustment is completed, the locking nut 11 is screwed down to enable the locking nut 11 to be abutted against the frame boss 6, so that the jackscrew 7 is locked to prevent the jackscrew 7 from rotating, and the jackscrew 7 and the frame boss 6 are stably and reliably connected.
In the pinch roll device provided by the embodiment of the invention, the connecting frame 5 is a U-shaped structure with an opening at the side end; the rear end of the lower pinch roll body 42 is arranged in the connecting frame 5, and the opening end of the connecting frame 5 is combined with a connecting block. A gap is reserved between the bottom of the lower pinch roll body 42 and the connecting frame 5; the connecting frame 5 is provided with a mounting hole 12 at the position below the lower pinch roll body 42; an elastic device which is matched with the bottom of the lower pinch roll body 42 in an abutting mode is arranged in the mounting hole 12. Because the working property of the pinch roll device is a frequent starting system, the elastic device can absorb vibration so as to achieve the purpose of preventing equipment from loosening or being damaged.
In one embodiment, the elastic device is a compression spring 14, an upper end of the compression spring 14 abuts against a bottom of the lower pinch roll body 42, and a lower end of the compression spring 14 abuts against a bottom of the mounting hole 12. As another embodiment, the elastic device includes a top plate 13 in abutting engagement with the bottom of the lower pinch roll body 42, and a compression spring 14 disposed below the top plate 13. The top plate 13 can move up and down in the mounting hole 12, and the top plate 13 is in abutting fit with the bottom of the lower pinch roll body 42 under the action of the compression spring 14. By arranging the top plate 13, the pressure of the compression spring 14 on the bottom of the lower pinch roll body 42 can be dispersed, and the bottom of the lower pinch roll body 42 is prevented from being scratched by the compression spring 14. Preferably, the bottom of the top plate 13 has a downwardly extending guide bar 15; the compression spring 14 is sleeved on the guide rod 15, so that the compression spring 14 is compressed or extended under the guiding action of the guide rod 15.
In the pinch roll device provided by the embodiment of the invention, the rack boss 6 is provided with an internal thread hole matched with the jackscrew 7. Preferably, the inner threaded hole matched with the jackscrew 7 on the rack boss 6 is of a through hole structure; and a locking device is arranged between the rack boss 6 and the jackscrew 7. The anti-loosening device is used for preventing the jackscrew 7 from rotating so as to ensure that the jackscrew 7 is stably and reliably connected with the rack boss 6. Because the working property of the pinch roll device is a frequent starting system, the anti-loosening device is arranged, so that the phenomenon that the jackscrew 7 rotates due to vibration is avoided in the working process of the pinch roll device, and the reliability of the levelness of the pinch roll is ensured.
The anti-loosening device comprises an anti-loosening ring 23 arranged below the rack boss 6 and an anti-loosening plate 24 arranged on one side of the rack boss 6; the upper end of the anti-loosening plate 24 is connected with the frame boss 6 in a clamping manner, and the lower end of the anti-loosening plate 24 is connected with the anti-loosening ring 23 in a welding manner; the shape of the inner hole of the anti-loosening ring 23 is square, and the lower end of the jackscrew 7 is provided with a locking block 25 which extends downwards into the inner hole of the anti-loosening ring 23 and is matched with the inner hole of the anti-loosening ring 23.
The upper end of the anti-loosening plate 24 is combined with the frame boss 6 through a bolt, the anti-loosening block 25 and the jackscrew 7 are of an integrally formed structure, the cross section of the anti-loosening block 25 is square, when the anti-loosening block 25 is inserted into an inner hole of the anti-loosening ring 23, and after the anti-loosening ring 23 and the frame boss 6 are connected through the anti-loosening plate 24, the jackscrew 7 can be prevented from rotating, and stable and reliable connection between the jackscrew 7 and the frame boss 6 is further guaranteed.
The anti-loosening device further comprises a cover plate 16 arranged below the anti-loosening ring 23, and a locking screw 17 penetrating through the cover plate 16 and fixedly connected with the anti-loosening block 25. The size of the cover plate 16 is larger than the size of the inner hole of the anti-loosening ring 23, a through hole for the locking screw 17 to pass through is formed in the cover plate 16, and an inner threaded hole matched with the locking screw 17 is formed in the bottom of the anti-loosening block 25. During installation, the locking screw 17 penetrates through the through hole in the cover plate 16 and is screwed into the internal thread hole of the anti-loosening block 25, and after the locking screw 17 is screwed down, the locking screw 17 is firmly connected with the anti-loosening block 25, so that the stability and the reliability of connection between the jackscrew 7 and the rack boss 6 are further improved.
When a traditional pinch roll device is installed, a steel wire is usually adopted to measure the verticality between the center line of a pinch roll roller and a shear line. The method is characterized in that a steel wire is pulled between an inlet frame and an outlet frame, the parallelism between the steel wire and a shearing edge line is measured firstly, and the steel wire is fixed after the requirements are met; then measuring the parallelism between the steel wire and the end surface of the pinch roll roller, wherein the parallelism is the perpendicularity between the center line of the pinch roll roller and the shearing edge line; the levelness of the pinch roll roller is measured by a horizontal frame instrument. However, this measurement method has the following disadvantages: the operation difficulty of the steel wire is high, so that the accuracy of the measured data is reduced; the pinch roll has short length, which causes large measurement error of levelness of the pinch roll, so that the installation precision of the traditional pinch roll device cannot meet the design requirement.
In order to reduce the measurement difficulty of the pinch roll device during installation and improve the installation accuracy of the pinch roll device, as a preferred embodiment, two upper pinch roll shell reference surfaces 34 are arranged on the shell of the upper pinch roll body 32, and the upper pinch roll shell reference surfaces 34 are cylindrical surfaces taking the axis of the upper pinch roll 31 as a central line; two lower pinch roll shell reference surfaces 18 are arranged on the shell of the lower pinch roll body 42, and the lower pinch roll shell reference surfaces 18 are cylindrical surfaces taking the axis of the lower pinch roll 41 as a central line; two frame reference surfaces 19 are arranged on the frame 2 at positions corresponding to the two lower pinch roll shell reference surfaces 18, and the frame reference surfaces 19 are vertical planes perpendicular to a shear line; and a flat ruler 20 for measuring the verticality of the upper pinch roll roller 31 and the lower pinch roll roller 41 is arranged on the lower tool rest 1.
Two upper pinch roll shell datum planes 34 are arranged on the shell of the upper pinch roll body 32 and used for replacing the outer peripheral surface of the upper pinch roll 31 to measure the levelness of the upper pinch roll 31, so that the problem that the levelness measuring error is large due to the fact that the length of the upper pinch roll 31 is short is solved. The two lower pinch roll shell reference surfaces 18 are arranged on the shell of the lower pinch roll body 42 and are used for replacing the outer peripheral surface of the lower pinch roll 41 to measure the levelness of the lower pinch roll 41, so that the problem that the levelness measuring error is large due to the fact that the lower pinch roll 41 is short is solved.
When the pinch roll device is installed and adjusted, the parallelism between the reference surface 34 of the upper pinch roll shell or the reference surface 18 of the lower pinch roll shell and the reference surface 19 of the rack can be measured, the parallelism between the end surface of a pinch roll roller and the flat rule 20 can be measured, the two parallelisms both represent the verticality between the pinch roll roller and the shearing edge line, so that the verticality between the pinch roll roller and the shearing edge line does not need to be measured by drawing a steel wire, and because the reference surface of the pinch roll shell, the reference surface of the rack and the flat rule are all machined to ensure the precision, the manual measurement error is reduced, the measurement precision is improved, and the installation precision of the pinch roll device is ensured to meet the design requirement.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The pinch roll device comprises a lower tool rest (1), a rack (2), an upper pinch roll assembly (3) and a lower pinch roll assembly (4); the upper pinch roll assembly (3) is arranged above the lower pinch roll assembly (4); the upper pinch roll assembly (3) comprises an upper pinch roll roller (31), an upper pinch roll body (32) and an upper pinch roll speed reduction motor (33) which are sequentially arranged along the axial direction of the upper pinch roll assembly; the upper pinch roll body (32) is arranged on the frame (2) through a hinge; the lower pinch roll assembly (4) comprises a lower pinch roll (41), a lower pinch roll body (42) and a lower pinch roll speed reduction motor (43) which are sequentially arranged along the axial direction of the lower pinch roll assembly; the lower pinch roll body (42) is arranged on the frame (2) through a hinge; a pinch roll hydraulic cylinder (22) is arranged between the upper pinch roll body (32) and the lower pinch roll body (42); the front end of the lower pinch roll body (42) is supported on the frame (2) through a first supporting device (26);
the device is characterized in that the rear end of the lower pinch roll body (42) is connected with the frame (2) through a first fixing device; the first fixing device comprises a connecting frame (5), a rack boss (6), a jackscrew (7), a connecting flange (8) and a first connecting mechanism; the connecting frame (5) is connected with the rear end of the lower pinch roll body (42); the rack boss (6) is arranged below the connecting frame (5) and is connected with the rack (2); the lower end of the jackscrew (7) is fixed on the rack boss (6) in a threaded connection mode, and the upper end of the jackscrew (7) is abutted against the bottom of the connecting frame (5); the connecting flange (8) is arranged on the jackscrew (7) and is connected with the connecting frame (5) through a first connecting mechanism.
2. The pinch roll device according to claim 1, characterized in that the first connecting means comprise a first stud (9) screwed to the bottom of the connecting frame (5) and passing down through the connecting flange (8), and a first nut (10) screwed to the lower end of the first stud (9); the connecting flange (8) is provided with a first through hole for the first stud (9) to pass through.
3. The pinch roll device according to claim 1, characterized in that the jackscrew (7) is threadedly connected with a lock nut (11) located between the frame boss (6) and the attachment flange (8).
4. Pinch roll device according to claim 1, characterized in that the connecting frame (5) is an open-sided U-shaped structure; the rear end of the lower pinch roll body (42) is arranged in the connecting frame (5), and the opening end of the connecting frame (5) is combined with a connecting block.
5. The pinch roll device as claimed in claim 4, characterized in that there is a gap between the bottom of the lower pinch roll body (42) and the connecting frame (5); the connecting frame (5) is provided with a mounting hole (12) at the position below the lower pinch roll body (42); and an elastic device which is matched with the bottom of the lower pinch roll body (42) in an abutting mode is arranged in the mounting hole (12).
6. Pinch roll device according to claim 5, characterized in that the resilient means comprise a top plate (13) in abutting engagement with the bottom of the lower pinch roll body (42) and a compression spring (14) arranged below the top plate (13).
7. Pinch roll device according to claim 6, characterized in that the bottom of the top plate (13) has a downwardly extending guide bar (15); the compression spring (14) is sleeved on the guide rod (15).
8. The pinch roll device as claimed in claim 1, wherein the internal thread hole on the frame boss (6) which is matched with the jackscrew (7) is a through hole structure; and a locking device is arranged between the rack boss (6) and the jackscrew (7).
9. Pinch roll device according to claim 8, characterized in that the anti-loosening device comprises an anti-loosening ring (23) arranged below the frame boss (6) and an anti-loosening plate (24) arranged at one side of the frame boss (6); the upper end of the anti-loosening plate (24) is connected with the rack boss (6) in a closing mode, and the lower end of the anti-loosening plate (24) is connected with the anti-loosening ring (23) in a welding mode; the inner hole of the anti-loosening ring (23) is square, and the lower end of the jackscrew (7) is provided with an anti-loosening block (25) which extends downwards into the inner hole of the anti-loosening ring (23) and is matched with the inner hole of the anti-loosening ring (23).
10. The pinch roll device as claimed in claim 1, characterized in that two upper pinch roll shell reference surfaces (34) are arranged on the shell of the upper pinch roll body (32), and the upper pinch roll shell reference surfaces (34) are cylindrical surfaces taking the axis of the upper pinch roll (31) as a center line;
two lower pinch roll shell reference surfaces (18) are arranged on the shell of the lower pinch roll body (42), and the lower pinch roll shell reference surfaces (18) are cylindrical surfaces taking the axis of the lower pinch roll (41) as the center line;
two frame reference surfaces (19) are arranged on the frame (2) at positions corresponding to the two lower pinch roll shell reference surfaces (18), and the frame reference surfaces (19) are vertical planes perpendicular to a shearing edge line; and a flat ruler (20) for measuring the verticality of the upper pinch roll roller (31) and the lower pinch roll roller (41) is arranged on the lower tool rest (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011537517.6A CN112705781B (en) | 2020-12-23 | 2020-12-23 | Pinch roll device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011537517.6A CN112705781B (en) | 2020-12-23 | 2020-12-23 | Pinch roll device |
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| Publication Number | Publication Date |
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| CN112705781A CN112705781A (en) | 2021-04-27 |
| CN112705781B true CN112705781B (en) | 2022-03-18 |
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| CN202011537517.6A Active CN112705781B (en) | 2020-12-23 | 2020-12-23 | Pinch roll device |
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|---|---|
| CN112705781A (en) | 2021-04-27 |
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