CN114986728A

CN114986728A - Automatic tensioning device of cutting roller of crystal silicon slicing machine, assembling method and slicing machine

Info

Publication number: CN114986728A
Application number: CN202210764294.XA
Authority: CN
Inventors: 仇健; 张善保
Original assignee: Qingdao Gaoce Technology Co Ltd
Current assignee: Qingdao Gaoce Technology Co Ltd
Priority date: 2022-06-30
Filing date: 2022-06-30
Publication date: 2022-09-02
Anticipated expiration: 2042-06-30
Also published as: CN114986728B

Abstract

The embodiment of the application provides an automatic tensioning device of a cutting roller of a crystal silicon slicing machine, an assembling method and the slicing machine. The automatic take-up device includes: the tensioning rod, the telescopic mechanism and the front spindle mounting seat are arranged on the front spindle; the front main shaft mounting seat is fixed at the front end of the cutting roller, the tensioning rod is sleeved in the cutting roller and in clearance fit with the cutting roller, and two ends of the telescopic mechanism are respectively fixed with the tensioning rod and the front main shaft mounting seat; the rear locking assembly can be fixed into a whole and can be separated into two parts and is connected between the rear end of the tensioning rod and the rear main shaft, and the telescopic mechanism is used for telescopically driving the tensioning rod to stretch so as to realize that the interior of the rear locking assembly is fixed into a whole to tension the rear main shaft and the cutting roller and realize that the interior of the rear locking assembly is separated into two parts to disassemble the rear main shaft; and the front locking assembly is used for tensioning the telescopic mechanism and the front main shaft. The embodiment of the application solves the technical problem that the traditional tensioning device only can simultaneously tension the front main shaft and the rear main shaft due to the fact that one screw rod is used for tensioning.

Description

Automatic tensioning device of cutting roller of crystal silicon slicing machine, assembling method and slicing machine

Technical Field

The application relates to the technical field of cutting, in particular to an automatic tensioning device of a cutting roller of a crystal silicon slicing machine, an assembling method and the slicing machine.

Background

High-purity crystalline silicon is a basic raw material used in the electronic and solar photovoltaic industries, and one of the important production links in the production process of the crystalline silicon wafer is slicing. With the development of the photovoltaic industry, the requirement on the reliability of the crystalline silicon slicing machine is higher and higher. The application number is CN201921707963.X, the name is a four-wheel-drive slicer mechanism suitable for multi-line cutting of hard and brittle materials, and discloses that front main shafts and rear main shafts are connected respectively at the two ends of a cutting roller, and two cutting rollers all adopt double driving main shafts to realize four-wheel-drive driving, increase sliced stability, and the synchronous control precision is higher. At present, only one pull rod penetrates through a front main shaft and a cutting roller, the front end of the pull rod is fixed by a nut, the rear end of the pull rod is connected with a rear main shaft through threads, and the front main shaft and the rear main shaft can only be tensioned and loosened simultaneously and cannot be separated for operation. Simultaneously, when only need dismantle the front axle, need unpack the back main axle simultaneously and can realize, in addition, the length overlength of pull rod, the adjustment operation difficulty.

The above information disclosed in the background section is only for enhancement of understanding of the background of the present application and therefore it may contain information that does not form the prior art that is known to those of ordinary skill in the art.

Disclosure of Invention

The embodiment of the application provides an automatic tensioning device and an assembling method of a cutting roller of a crystal silicon slicing machine and the slicing machine, and aims to solve the technical problem that a front main shaft and a rear main shaft can only be tensioned simultaneously due to the fact that a traditional tensioning device is tensioned through a screw.

The embodiment of the application provides an automatic tensioning device for a cutting roller of a crystalline silicon slicing machine, which is used for tensioning a rear main shaft, the cutting roller and a front main shaft into a whole; the automatic take-up device includes:

the cutting device comprises a tensioning rod, a telescopic mechanism and a front main shaft mounting seat, wherein the front main shaft mounting seat is fixed at the front end of a cutting roller, the tensioning rod is sleeved in the cutting roller and is in clearance fit with the cutting roller, and two ends of the telescopic mechanism are respectively fixed with the tensioning rod and the front main shaft mounting seat;

the rear locking assembly can be fixed into a whole and can be separated into two parts, and is connected between the rear end of the tensioning rod and the rear main shaft, and the telescopic mechanism is used for telescopically driving the tensioning rod to stretch so as to realize that the interior of the rear locking assembly is fixed into a whole to tension the rear main shaft and the cutting roller and realize that the interior of the rear locking assembly is separated into two parts to disassemble the rear main shaft;

and the front locking assembly is used for tensioning the telescopic mechanism and the front main shaft.

In practice, the rear locking assembly comprises:

the blind rivet is used for being fixed at the front end of the rear main shaft;

the second motion mechanism, the spring in a compressed state and the first motion mechanism; the spring is connected with the second motion mechanism and the first motion mechanism, and the second motion mechanism is connected with the tension rod;

wherein the rear end of the first movement mechanism is retractable and expandable; when the tension rod is not acted by external force, the relative positions of the second motion mechanism and the first motion mechanism are in an initial state, and the rear end of the first motion mechanism is kept contracted; the first motion mechanism and the second motion are used for moving backwards when the tension rod moves backwards and realizing that the rear end of the first motion mechanism changes from contraction to expansion.

In an implementation, the second motion mechanism comprises:

the clamping jaw sleeve is sleeved in the cutting roller, and the clamping jaw sleeve and the cutting roller are in clearance fit, so that the clamping jaw sleeve can move in the front-back direction; wherein, the claw sleeve is provided with a through hole at the side of the claw sleeve;

the first motion mechanism includes:

the clamping jaw, the clamping jaw fixing seat and the positioning screw are fixedly connected into a first movement mechanism; the claw fixing seat is sleeved in the claw sleeve, so that the first motion mechanism can move in the front-back direction relative to the claw sleeve;

the free end of the positioning screw extends out of the through hole on the side of the clamping jaw sleeve, a step surface is arranged in the cutting roller, the step surface is matched with the positioning screw to limit the limit position of the positioning screw moving towards the rear main shaft, and the second movement mechanism moves backwards to a first preset position of the cutting roller correspondingly.

In an implementation, the second motion mechanism further comprises:

a connecting rod; the rear end of the connecting rod is fixedly connected with the jaw sleeve, so that the jaw sleeve and the connecting rod are fixedly connected into a second motion mechanism, and the front end of the connecting rod is movably connected with the tensioning rod through threads;

the automatic tensioning device further comprises a rear locking screw, the rear locking screw is used for being installed at the cutting roller, and the screw rod part of the rear locking screw can be abutted to the clamping jaw sleeve.

In implementation, an accommodating cavity is formed in the clamping jaw sleeve, the accommodating cavity is sequentially divided into a clamping cavity, an expansion cavity and a sliding cavity from back to front, the clamping cavity, the expansion cavity and the sliding cavity are different in cavity diameter and are communicated, the cavity diameter of the expansion cavity is larger than that of the clamping cavity, the longitudinal section of the clamping cavity is conical, and the large-caliber end of the clamping cavity is connected with the expansion cavity; wherein:

the rear end of the connecting rod is fixedly connected with the sliding cavity of the clamping claw sleeve through threads;

when the tension rod is not acted by external force, the spring pushes the first motion mechanism to enable the wing edges of the clamping jaws to be kept in the clamping cavity to achieve wing edge contraction of the clamping jaws.

In implementation, the telescopic mechanism is a cylinder, the cylinder is used for ventilating the cylinder through a cylinder air hole so that the cylinder extends, and the cylinder resets after the ventilation is finished and resets to an initial contraction state.

In practice, the front locking assembly includes:

a screw; the screw rod is used for penetrating the shaft hole of front main shaft and the one end of screw rod be used for through the through-hole that front main shaft mount pad was reserved with telescopic machanism fixed connection, the other end is used for penetrating the shaft hole of front main shaft so that installation lock nut is in order to take up the front main shaft.

In an implementation, the front locking assembly further comprises:

and the front locking screw is used for being installed at the cutting roller, and the screw rod part of the front locking screw can be propped against the side surface of the front main shaft installation seat so as to lock the positions of the cutting roller and the tensioning rod.

In an embodiment, the automatic tensioning device further comprises:

the pre-tightening sleeves are sleeved on the periphery of the tightening rod and are positioned between the tightening rod and the cutting roller;

and the disc springs are sleeved on the periphery of the tensioning rod and positioned between the tensioning rod and the cutting roller and between the two pre-tightening sleeves.

The embodiment of the application also provides the following technical scheme:

an assembling method of the automatic tensioning device comprises a first tensioning step of assembling and tensioning the rear main shaft, the cutting roller and the front main shaft into a whole for the first time, wherein the first tensioning step comprises the following steps of:

firstly, the separated rear locking assembly is fixed into a whole, so that the rear main shaft and the cutting roller are tensioned;

then, fixing the rear end of the telescopic mechanism with the front end of the tension rod, and fixing the front end of the telescopic mechanism with the front spindle mounting seat;

then, fixing the front spindle mounting seat and the front end of the cutting roller, so that the telescopic mechanism is in an initial contraction state;

and finally, tensioning the cutting roller and the front main shaft through a telescopic mechanism and a front locking assembly.

The embodiment of the application also provides the following technical scheme:

a microtome, comprising:

a rear main shaft, a cutting roller and a front main shaft;

the automatic tensioning device.

Due to the adoption of the technical scheme, the embodiment of the application has the following technical effects:

the automatic take-up device of crystal silicon slicer cutting roller of this application embodiment, including three major parts, be back locking Assembly and preceding locking Assembly respectively to and be located the take-up lever between back locking Assembly and the preceding locking Assembly, telescopic machanism and preceding main shaft mount pad. Among the tightening rod, telescopic machanism and the preceding main shaft mount pad, the preceding main shaft mount pad is fixed in the front end of cutting roller. The rear locking component is a rear locking component which can be fixed into a whole and can be separated. Telescopic machanism is flexible to drive the straining bar flexible, and then realizes that back locking Assembly internal fixation is as an organic whole in order to strain back main shaft and cutting roller, can also realize the inside separation of back locking Assembly in order to dismantle back main shaft. The tension rod, the telescopic mechanism and the front spindle mounting seat are used as a large part, can be fixed into a whole, can be separated into two parts, and provide structural conditions for tensioning the rear spindle and disassembling the rear spindle. The rear main shaft is tensioned through a rear locking assembly and a telescopic mechanism, and the front main shaft is tensioned through a front locking assembly. I.e. the tightening of the rear spindle and the front spindle is separately effected by two separate structures, so that at least the tightening of the rear spindle and the front spindle can be effected separately. The technical effects brought by the tensioning of the rear main shaft and the front main shaft are achieved at least by the fact that the tensioning force suitable for the tensioning of the rear main shaft and the tensioning force suitable for the tensioning of the front main shaft are respectively configured, so that the service lives of the rear main shaft and the front main shaft are less different, the rear main shaft and the front main shaft can be replaced at the same time, and the maintenance time of the crystal silicon slicing machine is shortened.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is a schematic view of an automatic tensioning device for a cutting roller of a crystal silicon slicing machine tensioning a front spindle and a rear spindle according to an embodiment of the present application;

FIG. 2 is a cross-sectional view of FIG. 1;

FIG. 3 is an enlarged view of a portion of FIG. 2 at B;

FIG. 4 is an enlarged view of a portion of FIG. 2 at C;

FIG. 5 is an enlarged view of a portion of FIG. 2;

FIG. 6 is a front end schematic view of a tension bar of the automatic tensioning device shown in FIG. 1;

FIG. 7 is a partial schematic view of a rear locking assembly of the automatic tensioning device;

FIG. 8 is a cross-sectional view of FIG. 7;

FIG. 9 is an exploded view of FIG. 7;

FIG. 10 is a schematic view of the pawl sleeve of the rear lock assembly of FIG. 7;

FIG. 11 is a cross-sectional view of the pawl sleeve of FIG. 10;

FIG. 12 is a schematic view of the jaw and jaw retaining bracket secured together;

fig. 13 is a schematic view of a blind rivet.

Reference numerals:

1-cutting roller, 2-tensioning rod, 21-tensioning rod front end hole, 3-screw rod, 4-front main shaft, 5-locking nut, 6-blind rivet, 61-bulge, 7-rear main shaft, 8-clamping jaw, 81-clamping jaw sheet, 82-wing edge, 9-clamping jaw fixing seat, 10-clamping jaw sleeve, 101-clamping cavity, 102-expansion cavity, 103-sliding cavity, 104-clamping jaw sleeve side through hole, 11-connecting rod, 12-positioning screw, 13-pre-tightening sleeve, 14-disc spring, 15-front locking screw, 16-rear locking screw, 17-spring, 18-step surface and 20-thrust bearing.

Detailed Description

In order to make the technical solutions and advantages of the embodiments of the present application more apparent, the following further detailed description of the exemplary embodiments of the present application with reference to the accompanying drawings makes it clear that the described embodiments are only a part of the embodiments of the present application, and are not exhaustive of all embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

The automatic tensioning of the cutting roller of the existing crystalline silicon slicing machine is realized by using a long pull rod to penetrate through a front main shaft and the cutting roller, then, the end of the front main shaft is fixed by using a nut, and the other end of the pull rod is connected with a rear main shaft through threads, so that the front main shaft and the rear main shaft can only be tensioned and loosened simultaneously, the tensioning force of the front shaft is larger, the tensioning force of the rear shaft is smaller, the service life of the front main shaft is shorter than that of the rear main shaft, and the replacement time of the front main shaft and the rear main shaft is asynchronous; in addition, the disassembly of the front main shaft and the rear main shaft cannot be operated separately; when only the front main shaft is disassembled, the rear main shaft is also disassembled at the same time, the length of the long pull rod is too long, and the adjustment operation is difficult.

Example one

As shown in fig. 1, 2 and 3, an automatic tensioning device for a cutting roller of a crystal silicon slicer according to an embodiment of the present application is used for tensioning a rear spindle 7, the cutting roller 1 and a front spindle 4 into a whole; the automatic take-up device includes:

the cutting roller comprises a tensioning rod 2, a telescopic mechanism 21 and a front main shaft mounting seat 22, wherein the front main shaft mounting seat 22 is fixed at the front end of the cutting roller, the tensioning rod is sleeved in the cutting roller 1, and the tensioning rod and the cutting roller are in clearance fit; the front main shaft mounting seat 22 is fixed at the front end of the cutting roller, and two ends of the telescopic mechanism are respectively fixed with the tensioning rod and the front main shaft mounting seat;

the rear locking assembly can be fixed into a whole and can be separated into two parts, and is connected between the rear end of the tensioning rod and the rear main shaft, and the telescopic mechanism is used for telescopically driving the tensioning rod to stretch so as to realize that the inner part of the rear locking assembly is fixed into a whole to tension the rear main shaft 7 and the cutting roller 1 and realize that the inner part of the rear locking assembly is separated so as to disassemble the rear main shaft 7;

and the front locking assembly is used for tensioning the telescopic mechanism 21 and the front main shaft 4.

The automatic tensioning device of crystal silicon slicer cutting roller of this application embodiment includes three major parts, is back locking Assembly and preceding locking Assembly respectively to and be located straining rod 2, telescopic machanism 21 and preceding main shaft mount pad 22 between back locking Assembly and the preceding locking Assembly. The tensioning rod 2, the telescopic mechanism 21 and the front spindle mounting seat 22 are fixed at the front end of the cutting roller. The rear locking component is a rear locking component which can be fixed into a whole and can be separated into two parts. The telescopic mechanism stretches and retracts to drive the tensioning rod to stretch and retract relative to the fixed cutting roller and the front main shaft mounting seat, so that the internal fixation of the rear locking assembly can be integrated to tension the rear main shaft 7 and the cutting roller 1, and the internal separation of the rear locking assembly can be realized into two parts to disassemble the rear main shaft 7. The tension rod 2, the telescopic mechanism 21 and the front spindle attachment 22 are a large part, and the telescopic mechanism 21 can be extended and retracted. The back locking Assembly can fix as an organic whole, can also separate into two parts, through telescopic machanism's flexible, can realize taut back main shaft and dismantle back main shaft. The tensioning and the dismounting of the rear main shaft are realized through a rear locking assembly and a telescopic mechanism, and the tensioning of the front main shaft is realized through a front locking assembly. I.e. the tightening of the rear spindle and the front spindle is separately effected by two separate structures, so that at least the tightening of the rear spindle and the front spindle can be effected separately. The technical effects brought by the tensioning of the rear main shaft and the front main shaft are realized separately, at least, the tensioning force suitable for the tensioning of the rear main shaft and the tensioning force suitable for the tensioning of the front main shaft can be respectively realized, so that the service lives of the rear main shaft and the front main shaft are less different, the rear main shaft and the front main shaft can be replaced at the same time, and the maintenance time of the crystal silicon slicing machine is shortened.

Specifically, as shown in fig. 2, the arrangement direction of the front main shaft 4 and the rear main shaft 7 is the front-rear direction. In the present application, front, rear, front and rear ends correspond to the front-rear direction.

In practice, as shown in fig. 2, when the rear spindle 7, the cutting roller 1 and the front spindle 4 are assembled into a whole for the first time, a first tensioning step is required, which comprises:

firstly, the rear main shaft 7 and the cutting roller 1 are tensioned by fixing the separated rear locking components into a whole; before the first tensioning, the two separable parts of the rear locking component are in a separated state, one part is fixedly connected with the rear main shaft, and the other part is fixedly connected with the tensioning rod; the tensioning rod is driven to move towards the rear main shaft by the action of manual force, the separated rear locking assemblies are fixed into a whole, the rear main shaft and the cutting roller are tensioned, and the tensioned tensioning force needs to be adapted manually;

then, fixing the rear end of the telescopic mechanism with the front end of the tension rod, and fixing the front end of the telescopic mechanism with the front spindle mounting seat 22;

then, fixing the front spindle mounting seat 22 and the front end of the cutting roller, so that the telescopic mechanism is in an initial contraction state; namely, at this time, the tensioning rod is static relative to the cutting roller, the front spindle mounting seat 22 is also static relative to the cutting roller, the telescopic mechanism is in an initial contraction state, and the telescopic mechanism corresponds to an initial length;

finally, the tensioning of the cutting roller 1 and the front main shaft 4 is realized through the telescopic mechanism 21 and the front locking assembly.

In practice, as shown in fig. 2, after the rear main shaft 7, the cutter roller 1 and the front main shaft 4 are pulled together, they may be assembled for the first time or assembled for the next time.

When the front main shaft 4 needs to be disassembled, the front main shaft is disassembled, and the front main shaft disassembling step comprises the following steps:

the front main shaft is loosened through the front locking assembly, so that the front main shaft 4 is loosened;

when the rear main shaft 7 needs to be disassembled, the step of disassembling the rear main shaft is carried out, and the step of disassembling the rear main shaft comprises the following steps:

firstly, extending a telescopic mechanism 21 to push the tension rod 2 to move backwards, and driving a fixed and integrated rear locking component to realize separation and loosening of the rear main shaft 7;

and then, the telescopic mechanism resets to drive the part connected with the telescopic mechanism in the rear locking assembly to reset forwards.

Therefore, the front main shaft is independently disassembled, and the front main shaft can be independently replaced; the independent disassembly of the rear main shaft is realized, and the rear main shaft can be replaced independently.

In practice, after the first tightening step and after the removal of the rear spindle and the front spindle, a subsequent tightening step is also included, said subsequent tightening step comprising:

as shown in fig. 2, when the cutting roller 1 and the front spindle 4 need to be tensioned, the cutting roller 1 and the front spindle 4 are tensioned through the fixed connection of the telescopic mechanism 21 and the front locking assembly;

as shown in fig. 2, when the cutting roller 1 and the rear main shaft 7 need to be tensioned, the telescopic mechanism 21 is extended to push the tensioning rod 2 to move backwards, so as to drive the separated rear locking assemblies to be fixed into a whole, and the fixed rear locking assemblies are fixedly connected with the rear main shaft 7; and then, the telescopic mechanism resets to drive the rear locking assembly to reset forwards to an initial contraction state, so that the cutting roller 1 and the rear main shaft 7 are tensioned. As step a.

Therefore, the tensioning of the front main shaft and the tensioning of the rear main shaft are independent, so that the independent tensioning of the front main shaft and the independent tensioning of the rear main shaft are realized. Therefore, the tensioning of the front main shaft and the tensioning of the rear main shaft can be independently realized without sequence except for the first tensioning.

In practice, as shown in fig. 2 and 4, the rear locking assembly comprises:

the blind rivet 6 is used for being fixed at the front end of the rear main shaft 7; the rear locking assembly can be separated into two parts, one separated part is the blind rivet, and the other part is the blind rivet;

the spring 17 is connected with the second motion mechanism and the first motion mechanism, and the second motion mechanism is movably connected with the tension rod; wherein:

wherein the rear end of the first movement mechanism is contractible and expandable; when the tension rod is not acted by external force, the relative positions of the second motion mechanism and the first motion mechanism are in an initial state, and the rear end of the first motion mechanism is kept contracted; the first motion mechanism and the second motion are used for moving backwards when the tension rod moves backwards and realizing that the rear end of the first motion mechanism changes from contraction to expansion.

The spring 17 in the compressed state has the effect that when the tightening lever is not subjected to an external force, the relative position of the second movement mechanism and the first movement mechanism is in an initial state in which the rear end of the first movement mechanism remains contracted. That is, when the tension rod is not acted by external force, the rear end of the first motion mechanism is kept contracted, and at the moment, the rear end of the first motion mechanism is empty and does not hold the pull nail tightly.

When the tensioning rod is pushed backwards by a person, the tensioning rod moves backwards, and the tensioning rod drives the second motion mechanism and the first motion mechanism to move backwards together; after the second motion mechanism moves backwards to the first preset position of the cutting roller (namely, the limiting structure is arranged), the second motion mechanism is blocked and does not move backwards any more, the first motion mechanism continues to move backwards to further compress the spring until the relative position of the second motion mechanism and the first motion mechanism is in a compression limit state and then stops pushing the tensioning rod backwards, namely the tensioning rod stops moving backwards when not being pushed backwards, and the rear end of the first motion mechanism is expanded.

And then, the free end of the blind rivet fixed at the front end of the rear main shaft extends into the rear end of the expanded first motion mechanism, so that conditions are prepared for the rear end of the subsequent first motion mechanism to clasp the blind rivet.

Specifically, after the free end of the blind rivet fixed to the front end of the rear spindle is inserted into the rear end of the expanded first movement mechanism, the spring is at the compression limit state.

When the tensioning rod is pulled forwards, the spring is greatly compressed, the spring pushes against the first motion mechanism to move forwards, the relative positions of the second motion mechanism and the first motion mechanism are reset to an initial state, and the rear end of the first motion mechanism is reset to contract from expansion so as to clasp the blind rivet; when the tensioning rod is pulled forwards, the rear end of the first motion mechanism firstly clasps the tensioning nail;

after the rear end of the first movement mechanism clasps the pull stud, when the tensioning rod continues to be pulled forwards, the relative positions of the second movement mechanism and the first movement mechanism are kept in an initial state and move forwards until the rear main shaft 7 and the cutting roller 1 are tensioned.

In practice, as shown in fig. 2, 4 and 6, the second movement mechanism comprises:

the jaw sleeve 10 is sleeved in the cutting roller 1, and the jaw sleeve 10 and the cutting roller 1 are in clearance fit, so that the jaw sleeve 10 can move in the front-back direction; wherein, the jaw sleeve 10 is provided with a jaw sleeve side through hole 104;

the first motion mechanism includes:

the clamping jaw mechanism comprises a clamping jaw 8, a clamping jaw fixing seat 9 and a positioning screw 12, wherein the clamping jaw 8 and the clamping jaw fixing seat 9 are fixed, and the positioning screw 12 is fixed on the outer side surface of the clamping jaw fixing seat 9, so that the clamping jaw 8, the clamping jaw fixing seat 9 and the positioning screw 12 are fixedly connected into a whole, namely a first movement mechanism; the jaw fixing seat 9 is sleeved in the jaw sleeve 10, so that the first motion mechanism can move in the front-back direction relative to the jaw sleeve 10;

the free end of the positioning screw 12 extends out of the through hole 104 on the side of the jaw sleeve, a step surface 18 is arranged in the cutting roller 1, the step surface 18 is matched with the positioning screw 12 to limit the limit position of the positioning screw 12 moving towards the rear spindle 7, and the second movement mechanism moves backwards to a first preset position of the cutting roller correspondingly. During the backward movement of the second movement mechanism (i.e. the jaw 8, the jaw fixing seat 9 and the set screw 12 as a whole), the set screw 12 cannot move backward any more when abutting against the step surface 18.

In an implementation, as shown in fig. 2, 4 and 6, the second motion mechanism further includes:

a connecting rod 11; the rear end of the connecting rod is fixedly connected with the jaw sleeve 10, namely the jaw sleeve 10 and the connecting rod 11 are fixedly connected into a whole to serve as a second motion mechanism; the front end of the connecting rod 11 is movably connected with the tightening rod 2 through threads, and the tightening rod 2 can move along the threads relative to the connecting rod;

the automatic tensioning mechanism further comprises a rear locking screw 16 which is used for being installed at the cutting roller, and the screw rod part of the rear locking screw 16 can be propped against the jaw sleeve 10.

When the rear main shaft needs to be tightened, the screw rod part of the rear locking screw 16 slightly abuts against the clamping jaw sleeve 10, namely, the rear locking screw is pre-tightened. Thus, when the tightening rod 2 is rotated, the second motion mechanism cannot rotate synchronously with the rotation of the tightening rod 2 because the pawl sleeve 10 is slightly pressed by the screw portion of the rear locking screw 16, and the second motion mechanism can only move along the length direction of the screw thread along with the rotation of the tightening rod 2. Namely, the tightening rod 2 is screwed to drive the jaw sleeve 10 and the connecting rod 11 which are used as a second motion structure to move along the front-back direction;

after the rear main shaft is tightened, the screw portion of the rear locking screw 16 is pressed against the jaw sleeve 10 to fix the position of the jaw sleeve 10, so that the position of the second motion mechanism is fixed, the position of the jaw sleeve 10 is fixed, looseness cannot occur, and the tightened state is kept unchanged.

The rear end of the spring 17 is clamped on the periphery of the jaw fixing seat 9, and the front end of the spring 17 is propped against the rear end face of the connecting rod 11; the spring is propped against the rear end of the connecting rod and the rear end of the claw fixing seat 9. At this time, namely when the tension rod is not acted by external force, the relative position of the second motion mechanism and the first motion mechanism is in an initial state, and the rear end of the first motion mechanism is kept contracted.

Specifically, as shown in fig. 6, the rear end of the spring 17 is clamped at a shoulder protruding outwards from the rear end of the claw fixing seat 9.

In this way, by the spring 17 being in a compressed state, it is achieved that the first movement mechanism as a whole is elastically connected at the rear end position of the connecting rod among the pawl sleeve 10 and the connecting rod 11 as a whole.

In implementation, as shown in fig. 7, an accommodating cavity is formed in the claw sleeve 10, the accommodating cavity is sequentially divided into a clamping cavity 101, an expansion cavity 102 and a sliding cavity 103 from back to front, the clamping cavity 101, the expansion cavity 102 and the sliding cavity 103 are different in cavity diameter and are communicated, the cavity diameter of the expansion cavity 102 is larger than that of the clamping cavity 101, the longitudinal section of the clamping cavity 101 is conical, and the large-aperture end of the clamping cavity 101 is connected with the expansion cavity 102; wherein:

the rear end of the connecting rod 11 is fixedly connected with the sliding cavity 103 of the clamping jaw sleeve through threads;

when the tension rod 2 is not acted by external force, the spring pushes the first motion mechanism as a whole so that the wing edges 82 of the clamping jaws 8 are kept in the clamping cavity 101 to realize the contraction of the wing edges 82 of the clamping jaws 8;

the tensioning rod 2 moves backwards under the action of external force, the clamping jaw 8, the clamping jaw fixing seat 9 and the positioning screw 12 (namely the first movement mechanism) as a whole and the clamping jaw sleeve 10 and the connecting rod 11 (namely the second movement mechanism) as a whole move backwards firstly, when the step surface 18 blocks the positioning screw 12, the clamping jaw 8, the clamping jaw fixing seat 9 and the positioning screw 12 (namely the first movement mechanism) cannot move backwards, the clamping jaw sleeve 10 continues to move backwards, the compression spring is further compressed, the wing edge 82 of the clamping jaw 8 enters the expansion cavity 102 to form a horn mouth, and the free end of the pull nail 6 fixed at the front end of the rear spindle 7 extends into the expanded wing edge 82 of the clamping jaw 8.

The spring 17 is used for ensuring that the clamping jaw fixing seat 9 drives the clamping jaw 8 to be always attached to the clamping cavity 101 backwards, so that the clamping jaw 8 is in a contraction state. At this time, the set screw 12 reaches the leftmost end of the claw sleeve side through hole 104. The length of the through hole on the side of the claw sleeve in the front-back direction defines the distance of relative movement of the second motion mechanism and the first motion mechanism.

When the jaws 8 are not assembled alone, the wings 82 are in an expanded condition. In the assembled view, the limb 82 is in a contracted condition due to the action of the spring 17.

Specifically, as shown in fig. 2, 4 and 8, the rear main shaft 7 is fixedly connected with one end of the blind rivet 6 through a thread, and the other end of the blind rivet 6 is inserted into the expanded wing edge 82 of the claw 8.

In operation, as shown in fig. 2, after the other end of the pull stud 6 is inserted into the claw 8, the tension rod 2 is pulled forward, and correspondingly, the telescopic mechanism starts to retract and reset from the extension, wherein:

the jaw sleeve 10 and the connecting rod 11 (i.e. the second motion mechanism) as a whole move forward, and the jaw 8, the jaw fixing seat 9 and the set screw 12 (i.e. the first motion mechanism) as a whole remain stationary due to the return of the compression spring, and the jaw sleeve 10 moves forward until the wing edge 82 of the jaw 8 enters the clamping cavity 101 and the jaw contracts to clasp the blind rivet 6.

In the implementation, the jack catch shrink is held tightly behind the blind rivet 6, and the tightening rod 2 continues to receive forward pulling, and corresponding, telescopic machanism continues to shrink and resets, wherein:

the jaw housing 10 and the connecting rod 11 as a whole together with the jaw 8, the jaw holder 9 and the set screw 12 as a whole are moved forward until the rear spindle 7 and the cutting roller 1 are tensioned.

Specifically, the rear end of the tension rod 2 is movably connected with the connecting rod 11 through threads, but the rear end threads of the tension rod 2 are not all screwed into the front end threaded hole of the connecting rod 11, so that the tension rod 2 can be rotated from the front end of the tension rod 2. When the tightening rod 2 is rotated, the screw part of the rear locking screw 16 slightly abuts against the jaw sleeve 10. Thus, when the tightening rod 2 is rotated, since the jaw sleeve 10 is lightly pressed by the screw portion of the rear locking screw 16, the second motion mechanism cannot rotate synchronously with the rotation of the tightening rod 2, and the second motion mechanism can only move along the length direction of the screw thread along with the rotation of the tightening rod 2. Namely, the tightening rod 2 is screwed to drive the jaw sleeve 10 and the connecting rod 11 which are used as a second motion structure to move along the front-back direction; thereby realizing the installation of the rear main shaft.

I.e. the rear locking screw has two functions.

Specifically, the front end of the jaw 8 is fixed to the jaw fixing seat 9, and the wing edge 82 of the jaw 8 is located at the rear end of the jaw 8.

In an implementation, the telescopic mechanism 21 is a cylinder, and the cylinder is used for ventilating the cylinder through a cylinder air hole 23 so that the cylinder extends, and the cylinder resets after ventilation is finished and resets to an initial contraction state.

In practice, as shown in fig. 2 and 5, the front locking assembly comprises:

a screw 3; the screw rod 3 is used for penetrating the shaft hole of the front main shaft 4, one end of the screw rod 3 is used for passing through a through hole reserved in the front main shaft mounting seat 22 and fixedly connected with the telescopic mechanism, and the other end of the screw rod is used for penetrating the shaft hole of the front main shaft 4 so as to install a locking nut to tighten the front main shaft.

Specifically, when the front main shaft 4 is tensioned, one end of the screw rod 3 is fixedly connected with the telescopic mechanism through a through hole reserved in the front main shaft mounting seat 22, the screw rod penetrates into a shaft hole of the front main shaft 4, and finally, a locking nut is mounted to tension the front main shaft.

Therefore, the front main shaft 4 can be conveniently tensioned through the telescopic mechanism, the screw rod 3 and the locking nut 5.

When the rear main shaft 7, the cutting roller 1 and the front main shaft 4 are assembled and tightened into a whole for the first time, the step of tightening for the first time is carried out, and the step of tightening for the first time is sequentially required, and the rear main shaft is required to be tightened firstly, and then the front main shaft is required to be tightened. The steps of tensioning the rear main shaft in the first tensioning step are as follows:

step A10: as shown in fig. 3, a wrench is used to screw the front end hole 21 of the tension rod 2 (the tension rod is driven to move towards the rear spindle by the action of manual force, the separated rear locking component is fixed into a whole, the rear spindle and the cutting roll are tensioned, and the tensioned tensioning force needs to be adapted manually), and after being screwed, the cylinder is installed in the front end hole 21 of the tension rod; finally, the front spindle mounting seat 22 is fixedly connected to the front end of the cutting roller 1 in a threaded connection mode, and at the moment, the air cylinder is in an initial contraction state; namely, when the air cylinder is in an initial contraction state and the rear main shaft and the cutting roller are tensioned together, the tensioning force between the rear main shaft and the cutting roller reaches the preset requirement.

Then, as shown in fig. 2, the method further includes the following steps:

step S110: fixedly connecting the blind rivet 6 with the rear main shaft 7 through threads;

step S120: the air cylinder is ventilated through the air cylinder air hole 23, and the air cylinder extends to drive the tensioning rod 2 to move backwards; the tension rod 2 drives the connecting rod 11 and the clamping claw sleeve 10 to move backwards in sequence; the claw fixing seat 9, the positioning screw 12 and the claw 8 in the claw sleeve 10 also move backwards along with the claw sleeve;

however, the whole body formed by the claw fixing seat 9, the positioning screw 12 and the claw 8 cannot move backwards all the time, because the positioning screw 12 cannot move backwards after reaching the position of the step surface 18;

step S130: the cylinder continues to extend to continue to drive the tensioning rod 2 to move backwards, and at the moment, the whole formed by the claw fixing seat 9, the positioning screw 12 and the claw 8 cannot move backwards, namely, the claw cannot move any more; however, the jaw sleeve 10 continues to move backward, and the backward movement of the jaw sleeve 10 causes the wing edges 82 on the jaws 8 to enter the expansion cavity 102 from the clamping cavity 101, so that the wing edges 82 expand;

step S140: at this time, the blind rivet 6 enters the claw sleeve 10 from the rear end of the claw sleeve 10 and then enters the opened wing edge 82 in the expansion cavity 102; at the moment, the ventilation of the cylinder is stopped, and the cylinder starts to contract;

step S150: the air cylinder contracts to pull the tensioning rod 2 to move forwards, the connecting rod 11 drives the clamping jaw sleeve 10 to move forwards, the whole body formed by the clamping jaw fixing seat 9, the positioning screw 12 and the clamping jaw 8 does not move forwards under the action of the spring 17, the clamping jaw sleeve 10 moves forwards until the wing edge 82 of the clamping jaw 8 enters the clamping cavity 104, and at the moment, the wing edge 82 contracts to hold the protrusion 61 tightly;

step S160: the cylinder continues to contract to pull the tensioning rod 2 to continue to move forwards, and the connecting rod 11 drives the jaw sleeve 10 and the jaw fixing seat 9 of the jaw 6 of the blind rivet 8 to move forwards until the cylinder resets to tension the rear main shaft 7. So far, the main shaft is assembled for the first time after the completion.

Step A20: one end of the screw rod 3 is fixedly connected with the cylinder through a through hole reserved in the front main shaft mounting seat 22, the screw rod penetrates through a shaft hole of the front main shaft 4, and finally a locking nut 5 is mounted at the front end of the front main shaft 4 to tighten the front main shaft.

After the first tensioning is finished, the front main shaft and the rear main shaft are disassembled without sequential requirements. After the first assembly is completed, when the rear main shaft and the front main shaft need to be tensioned, the sequence requirement is not required any more, and only one of the rear main shaft and the front main shaft can be disassembled.

When the front main shaft 4 needs to be detached independently, the front main shaft 4 can be taken off from the screw rod 3 only by unscrewing the locking nut 5.

When the rear main shaft needs to be detached separately,

step C10: the air cylinder is ventilated through the air cylinder air hole 23, and the air cylinder extends to drive the tensioning rod 2 to move backwards; the tension rod 2 drives the connecting rod 11 and the clamping claw sleeve 10 to move backwards in sequence; the claw fixing seat 9, the positioning screw 12 and the claw 8 in the claw sleeve 10 also move backwards along with the claw sleeve;

step C20: the cylinder continues to extend to continue to drive the tensioning rod 2 to move backwards, and at the moment, the whole formed by the claw fixing seat 9, the positioning screw 12 and the claw 8 cannot move backwards, namely, the claw cannot move any more; however, the jaw sleeve 10 continues to move backward, and the backward movement of the jaw sleeve 10 causes the wing edges 82 on the jaws 8 to enter the expansion cavity 102 from the clamping cavity 101, so that the wing edges 82 expand;

step C30: at this point, the blind rivet 6 is pulled away from the rear end of the claw sleeve 10, away from the claw sleeve 10 and away from the expanded wing 82 located in the expansion chamber 102; at the moment, the ventilation of the cylinder is stopped, and the cylinder starts to contract;

step C40: the air cylinder contracts to pull the tensioning rod 2 to move forwards, the connecting rod 11 drives the clamping jaw sleeve 10 to move forwards, at the moment, the whole body formed by the clamping jaw fixing seat 9, the positioning screw 12 and the clamping jaw 8 does not move forwards under the action of the spring 17, the clamping jaw sleeve 10 moves forwards until the wing edge 82 of the clamping jaw 8 enters the clamping cavity 104, at the moment, the wing edge 82 contracts, and no structure is clasped in the wing edge;

step C50: the cylinder continues to contract and pulls the tensioning rod 2 to continue to move forwards, the connecting rod 11 drives the jaw sleeve 10 and the jaw fixing seat 9 of the jaw 6 of the blind rivet 8 to move forwards until the blind rivet 6 and the jaw are completely separated when the cylinder resets, and the rear spindle 7 is detached.

After the assembly and tensioning are completed for the first time, the front main shaft and the rear main shaft are disassembled, and if the rear main shaft 7, the cutting roller 1 and the front main shaft 4 need to be tensioned into a whole again, the front main shaft can be tensioned firstly and then the rear main shaft can be tensioned without the requirement of sequence; or the rear main shaft can be tensioned firstly and then the front main shaft can be tensioned.

The step of tightening the front spindle, in accordance with step a 20.

The step of tightening the rear spindle is identical to step S110 to step S160.

In practice, as shown in fig. 1, the automatic tensioning device further comprises:

a front locking screw 15, which is used for being arranged at the cutting roller, and the screw rod part of the front locking screw 15 can be pressed against the side surface of the tensioning rod 2 so as to lock the positions of the cutting roller and the tensioning rod 2.

The front locking screw 15 cooperates with the side of the tightening rod 2 to achieve the locking of the cutting roller and the tightening rod 2. Prevent that crystal silicon slicer cutting roller in the course of the work, straining bar 2 is rotatory.

After tightening the rear spindle, the rear locking screw 16 and the front locking screw 15 cooperate to lock the tightened state of the rear spindle. The front locking screw 15 locks the position of the tension rod 2 and the rear locking screw 16 locks the position of the claw sleeve 10.

a plurality of pre-tightening sleeves 13 which are sleeved on the periphery of the tightening rod 2 and are positioned between the tightening rod and the cutting roller 1;

and the disc springs 14 are sleeved on the periphery of the tensioning rod 2, are positioned between the tensioning rod and the cutting roller 1 and are positioned between the two pre-tightening sleeves.

The pre-tightening sleeve 13 can reduce the shaking of the tightening rod 2 in the radial direction, and the stability of the tightening rod 2 is improved. The disc spring 14 avoids reducing the play of the pre-tensioned sleeve 13. That is to say, through setting up pretension cover 13 and dish spring 14, help improving the stability of straining rod 2 and cutting roller 1, guarantee the crystal silicon section precision.

Specifically, as shown in fig. 6 and 7, in order to facilitate the claw 8 to clamp the blind rivet 6, one end of the blind rivet 6 embedded in the claw 8 protrudes to the periphery of the blind rivet 6 to form a protrusion 61, and the protrusion 61 is embedded in the claw 8.

In practice, as shown in fig. 7, the projection 61 is in the shape of a circular truncated cone. The jaw 8 is formed by surrounding a plurality of jaw sheets 81, one end of each jaw sheet 81 is connected with the jaw fixing seat 9, and the other end of each jaw sheet is bent to form a wing edge 82.

Specifically, as shown in fig. 6, the wing edges 82 of the plurality of jaw pieces 81 form a bell mouth, and the large-caliber end of the bell mouth is close to the blind rivet 6, so that the protrusion 61 and the jaw 8 can be assembled conveniently.

In particular, it also comprises a thrust bearing 20, arranged in the gap between the tightening rod 2 and the pre-tightening sleeve 13. The presence of the thrust bearing 20 prevents dry friction between the tightening rod 2 and the pre-tightening sleeve 13.

The disc spring 14, the pre-tightening sleeve 13 and the thrust bearing 20 act as follows: when the front end of the tension rod 2 is rotated, the thrust bearing 20 rotates, preventing the disc spring 14 and the preload collar 13 from following the rotation. After tightening the tightening rod 12, the compressed disc spring 14 contracts and prevents the tightening rod 2 from being pressed against the right end face of the cutting roller 1 in its entirety.

Example two

As shown in fig. 1 to 6, an assembling method of an automatic tensioning device according to an embodiment of the present application includes a first tensioning step of assembling and tensioning a rear main shaft 7, a cutting roller 1 and a front main shaft 4 into a whole for the first time, and the first tensioning step includes:

firstly, the separated rear locking assembly is fixed into a whole, so that the rear main shaft 7 and the cutting roller 1 are tensioned;

then, the rear end of the telescopic mechanism is fixed with the front end of the tension rod, and the front end of the telescopic mechanism is fixed with the front spindle mounting seat 22;

then, fixing the front spindle mounting seat 22 and the front end of the cutting roller, so that the telescopic mechanism is in an initial contraction state;

finally, the tensioning of the tensioning cutting roller 1 and the front main shaft 4 is realized by the telescopic mechanism 21 and the front locking assembly.

In the first tensioning, the tensioning of the rear main shaft must be carried out firstly, and then the tensioning of the front main shaft must be carried out, and a strict sequence exists. But the tightening of the rear spindle and the tightening of the front spindle in the subsequent tightening do not need to distinguish between the sequences.

In an implementation, after the step of tensioning, the method further comprises a step of disassembling the front main shaft, wherein the step of disassembling the front main shaft comprises:

and the front main shaft is loosened through the front locking assembly, so that the front main shaft 4 is loosened.

In the implementation, after the step of tensioning, the step of disassembling the rear main shaft is further included, and the step of disassembling the rear main shaft comprises the following steps:

Therefore, the front main shaft can be independently disassembled and independently replaced; the rear main shaft can be independently disassembled and replaced.

In practice, a subsequent tightening step is also included after the first tightening step and after the removal of the rear spindle and the front spindle, said subsequent tightening step comprising:

the cutting roller 1 and the front main shaft 4 are tensioned through the fixed connection of the telescopic mechanism 21 and the front locking assembly;

the telescopic mechanism 21 extends to push the tension rod 2 to move backwards, so as to drive the separated rear locking assemblies to be fixed into a whole, and the fixed rear locking assemblies are fixedly connected with the rear main shaft 7; then, the telescopic mechanism resets to drive the rear locking assembly to reset forwards to an initial contraction state, so that the cutting roller (1) and the rear main shaft 7 are tensioned; as step a.

In the subsequent tensioning step, the steps of tensioning the front main shaft 4 and tensioning the rear main shaft 7 do not have the requirement of sequence.

In practice, step a comprises:

the stretching mechanism 21 stretches to push the tensioning rod 2 to move backwards, the second motion mechanism and the first motion mechanism move backwards together, the second motion mechanism cannot move backwards continuously after moving backwards to a first preset position of the cutting roller, the first motion mechanism continues to move backwards, the tensioning rod stops moving backwards after the relative position of the second motion mechanism and the first motion mechanism is in a compression limit state, and the rear end of the first motion mechanism changes from contraction to expansion; as step X; at the moment, the rear end of the first movement mechanism expands, and a premise is provided for the free end of the blind rivet to enter;

the free end of the blind rivet fixed at the front end of the rear main shaft extends into the rear end of the expanded first motion mechanism, and the telescopic mechanism does not push the tension rod to move backwards any more. I.e. when the free end of the blind rivet has entered the rear end of the expanded first movement means.

The tensioning lever 2 is pushed backwards by an actuation-extension mechanism 21 extending, so that the second movement mechanism is moved backwards and the second movement mechanism changes from contraction to expansion, providing for the free end of the blind rivet to enter.

In practice, step a further comprises:

after the free end of the blind rivet fixed at the front end of the rear main shaft extends into the rear end of the expanded first motion mechanism, when the telescopic mechanism contracts to drive the tensioning rod to move forwards, the first motion mechanism moves forwards firstly, the relative positions of the second motion mechanism and the first motion mechanism are reset to an initial state, and the rear end of the first motion mechanism is reset to contract from expansion so as to clasp the blind rivet; as step E;

and when the tensioning rod continues to move forwards, the relative positions of the second motion mechanism and the first motion mechanism are kept in the initial state and move forwards until the rear main shaft and the cutting roller are tensioned.

The tensioning rod is driven to move forwards through the contraction of an action-telescopic mechanism, so that the rear end of the second motion structure clasps the tensioning nail and tensions the rear main shaft and the cutting roller. The whole tensioning steps are few, the manual operation in the tensioning steps is simple, and the tensioning is convenient to realize.

In the implementation, the step X specifically includes:

the extension mechanism 21 extends to push the tension rod 2 to move backwards, the first motion mechanism and the second motion mechanism move backwards firstly, when the step surface 18 blocks the positioning screw 12, the first motion mechanism cannot move backwards, the jaw sleeve 10 continues to move backwards and the compression spring is further compressed, the wing edges 82 of the jaws enter the expansion cavity 102 to form a horn mouth, and the free end of the blind rivet 6 fixed at the front end of the rear spindle 7 extends into the wing edges 82 of the jaws which are expanded。

The first motion mechanism is matched with the second motion mechanism, so that the free end of the blind rivet 6 fixed at the front end of the rear main shaft 7 can be conveniently extended into the wing edge 82 expanded by the clamping jaws.

In the implementation, the step E specifically includes:

the first moving mechanism moves forwards, the first moving mechanism is kept still due to the reset of the compression spring 17, the claw sleeve 10 moves forwards until the wing edges 82 of the claws enter the clamping cavity 101, and the claws shrink to hold the blind rivet (6).

In the description of the present application and the embodiments thereof, it is to be understood that the terms "top", "bottom", "height", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.

In this application and its embodiments, unless expressly stated or limited otherwise, the terms "disposed," "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integral to; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application and its embodiments, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise the first and second features being in direct contact, or may comprise the first and second features being in contact, not directly, but via another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. The first feature being "under," "beneath," and "under" the second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.

The above disclosure provides many different embodiments or examples for implementing different structures of the application. The components and arrangements of specific examples are described above to simplify the present disclosure. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including the preferred embodiment and all changes and modifications that fall within the scope of the present application.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. An automatic tensioning device of a cutting roller of a crystalline silicon slicing machine is used for tensioning a rear main shaft (7), the cutting roller (1) and a front main shaft (4) into a whole; characterized in that the automatic tensioning device comprises:

the cutting roller cutting device comprises a tightening rod (2), a telescopic mechanism (21) and a front spindle mounting seat (22), wherein the front spindle mounting seat (22) is fixed at the front end of the cutting roller, the tightening rod is used for being sleeved in the cutting roller (1) and in clearance fit with the cutting roller, and two ends of the telescopic mechanism are used for being fixed with the tightening rod and the front spindle mounting seat respectively;

the rear locking assembly capable of being fixed into a whole and separated into two parts is connected between the rear end of the tensioning rod and the rear main shaft, and the telescopic mechanism is used for telescopically driving the tensioning rod to stretch so as to realize that the interior of the rear locking assembly is fixed into a whole to tension the rear main shaft (7) and the cutting roller (1) and realize that the interior of the rear locking assembly is separated into two parts to disassemble the rear main shaft (7);

and the front locking assembly is used for tensioning the telescopic mechanism (21) and the front main shaft (4).

2. The automatic tensioning device according to claim 1, wherein the rear locking assembly comprises:

the blind rivet (6) is used for being fixed at the front end of the rear main shaft (7);

a first movement mechanism, a spring (17) in a compressed state and a second movement mechanism; the spring (17) is connected with the second motion mechanism and the first motion mechanism, and the second motion mechanism is connected with the tensioning rod;

3. The automatic tensioning device according to claim 2, wherein the second movement mechanism comprises:

the clamping jaw sleeve (10) is sleeved in the cutting roller (1), and the clamping jaw sleeve (10) is in clearance fit with the cutting roller (1) so that the clamping jaw sleeve (10) can move in the front-back direction; wherein, the jaw sleeve (10) is provided with a jaw sleeve side through hole (104);

the first motion mechanism includes:

the clamping jaw mechanism comprises a clamping jaw (8), a clamping jaw fixing seat (9) and a positioning screw (12), wherein the clamping jaw and the clamping jaw fixing seat are fixed, and the positioning screw is fixed on the outer side surface of the clamping jaw fixing seat, so that the clamping jaw, the clamping jaw fixing seat and the positioning screw are fixedly connected into a first movement mechanism; the claw fixing seat is sleeved in the claw sleeve (10) so that the first motion mechanism can move relative to the claw sleeve in the front-back direction;

the free end of the positioning screw (12) extends out of the through hole (104) in the side of the clamping jaw sleeve, a step surface (18) is arranged in the cutting roller (1), the step surface (18) and the positioning screw (12) are matched with each other to limit the limit position of the positioning screw moving towards the rear main shaft, and the second movement mechanism corresponds to the first preset position of the cutting roller when moving backwards.

4. The automatic tensioning device according to claim 3, wherein the second movement mechanism further comprises:

a connecting rod (11); the rear end of the connecting rod is fixedly connected with the jaw sleeve (10), so that the jaw sleeve (10) and the connecting rod (11) are fixedly connected to form a second motion mechanism, and the front end of the connecting rod (11) is movably connected with the tensioning rod (2) through threads;

the automatic tensioning device further comprises a rear locking screw (16) which is used for being installed at the cutting roller, and the screw part of the rear locking screw (16) can be propped against the jaw sleeve (10).

5. The automatic tensioning device according to claim 4, wherein an accommodating cavity is formed in the clamping jaw sleeve (10), the accommodating cavity is sequentially divided into a clamping cavity (101), an expansion cavity (102) and a sliding cavity (103) which have different cavity diameters and are communicated from back to front, the cavity diameter of the expansion cavity (102) is larger than that of the clamping cavity (101), the longitudinal section of the clamping cavity (101) is conical, and the large-diameter end of the clamping cavity (101) is connected with the expansion cavity (102); wherein:

the rear end of the connecting rod (11) is fixedly connected with the sliding cavity (103) of the clamping claw sleeve through threads;

when the tension rod (2) is not acted by external force, the spring pushes the first motion mechanism to enable the wing edges (82) of the clamping jaws to be kept in the clamping cavity (101) to achieve contraction of the wing edges (82) of the clamping jaws.

6. The automatic tensioning device according to claim 1, wherein the telescopic mechanism is a cylinder, the cylinder is used for ventilating the cylinder through a cylinder air hole so that the cylinder extends, and the cylinder is reset after the ventilation is finished and is reset to an initial contraction state.

7. The automatic tensioning device according to any one of claims 1 to 6, wherein the front locking assembly comprises:

a screw (3); the screw rod (3) is used for penetrating the shaft hole of fore spindle (4) just the one end of screw rod (3) is used for passing through the through-hole that fore spindle mount pad (22) was reserved with telescopic machanism fixed connection, the other end is used for penetrating the shaft hole of fore spindle (4) so that the installation lock nut is in order to strain the fore spindle.

8. The automatic tensioning device of claim 7, wherein the front locking assembly further comprises:

the front locking screw (15) is used for being installed at the cutting roller, and the screw rod part of the front locking screw (15) can be pressed against the side surface of the front main shaft installation seat (22) so as to lock the positions of the cutting roller and the tensioning rod (2).

9. The automatic tensioning device according to claim 8, further comprising:

a plurality of pre-tightening sleeves (13) which are sleeved on the periphery of the tightening rod (2) and are positioned between the tightening rod and the cutting roller;

and the disc springs (14) are sleeved on the periphery of the tightening rod (2), are positioned between the tightening rod and the cutting roller (1) and are positioned between the two pre-tightening sleeves.

10. A method of assembling an automatic tensioning device according to any one of claims 1 to 9, characterized in that it comprises a first tensioning step of assembling and tensioning the rear main shaft (7), the cutting roller (1) and the front main shaft (4) into a single unit for the first time, the first tensioning step comprising:

firstly, the separated rear locking assembly is fixed into a whole, so that the rear main shaft (7) and the cutting roller (1) are tensioned;

then, the rear end of the telescopic mechanism is fixed with the front end of the tension rod, and the front end of the telescopic mechanism is fixed with a front spindle mounting seat (22);

then, fixing a front spindle mounting seat (22) and the front end of the cutting roller, so that the telescopic mechanism is in an initial contraction state;

finally, the cutting roller (1) and the front main shaft (4) are tensioned through a telescopic mechanism (21) and a front locking assembly.

11. The method of assembling of claim 10, further comprising the step of disassembling the front spindle after the step of tensioning, the step of disassembling the front spindle comprising:

the front main shaft is loosened through the front locking assembly, so that the front main shaft (4) is loosened.

12. The method of assembling of claim 11, further comprising the step of disassembling the rear spindle after the step of tensioning, the step of disassembling the rear spindle comprising:

firstly, a telescopic mechanism (21) is extended to push the tensioning rod (2) to move backwards, and a rear locking component fixed integrally is driven to realize separation and loosening of the rear main shaft (7);

and then, the telescopic mechanism resets to drive the part of the rear locking assembly connected with the telescopic mechanism to reset forwards.

13. The assembly method according to claim 12, further comprising, after the step of first tensioning and after disassembling the rear spindle and the front spindle, a subsequent tensioning step comprising:

the cutting roller (1) and the front main shaft (4) are tensioned through the fixed connection of the telescopic mechanism (21) and the front locking assembly;

the stretching mechanism (21) stretches to push the tension rod (2) to move backwards, so as to drive the separated rear locking assemblies to be fixed into a whole, and the fixed rear locking assemblies are fixedly connected with the rear main shaft (7); then, the telescopic mechanism resets to drive the rear locking assembly to reset to an initial contraction state forward, so that the cutting roller (1) and the rear main shaft (7) are tensioned; as step a.

14. The method of assembling of claim 13, wherein step a comprises:

the tensioning rod (2) is pushed to move backwards by the extension of the telescopic mechanism (21), the second motion mechanism and the first motion mechanism move backwards together, the second motion mechanism cannot move backwards continuously after moving backwards to a first preset position of the cutting roller, the first motion mechanism continues to move backwards, the tensioning rod stops moving backwards after the relative position of the second motion mechanism and the first motion mechanism is in a compression limit state, and the rear end of the first motion mechanism changes from contraction to expansion; as step X;

the free end of the blind rivet fixed at the front end of the rear main shaft extends into the rear end of the expanded first motion mechanism, and the telescopic mechanism does not push the tensioning rod to move backwards any more.

15. The method of assembling of claim 14, wherein step a further comprises:

16. The assembly method according to claim 15, characterized in that step X, in particular comprises:

the tensioning rod (2) is pushed to move backwards by the extension of the telescopic mechanism (21), the first moving mechanism and the second moving mechanism move backwards firstly, when the step surface (18) blocks the positioning screw (12), the first moving mechanism cannot move backwards, the jaw sleeve (10) continues to move backwards, the compression spring is further compressed, the wing edges (82) of the jaws enter the expansion cavity (102) to form a horn mouth, and the free ends of the pull nails (6) fixed at the front end of the rear main shaft (7) extend into the expanded wing edges (82) of the jaws.

17. The assembly method according to claim 16, wherein step E specifically comprises:

the first motion mechanism moves forwards, the first motion mechanism is kept still due to the reset of the compression spring (17), and the claw sleeve (10) moves forwards until the wing edges (82) of the claws enter the clamping cavity (101) and the claws shrink to clasp the blind rivet (6).

18. A microtome, comprising:

a rear main shaft (7), a cutting roller (1) and a front main shaft (4);

the automatic tensioning device of any one of claims 1 to 9.