CN114986728B - Automatic tensioning device for cutting roller of crystal silicon slicing machine, assembling method and slicing machine - Google Patents

Abstract

The embodiment of the application provides an automatic tensioning device of a cutting roller of a crystal silicon slicer, an assembly method and the slicer. The automatic tensioning device comprises: the front spindle comprises a tensioning rod, a telescopic mechanism and a front spindle mounting seat; the front spindle mounting seat is fixed at the front end of the cutting roller, the tension rod is sleeved in the cutting roller, the tension rod is in clearance fit with the cutting roller, and two ends of the telescopic mechanism are respectively fixed with the tension rod and the front spindle mounting seat; the rear locking assembly can be fixed into a whole and can be 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 driving the tensioning rod to stretch to realize that the rear locking assembly is fixed into a whole inside the tensioning rod so as to tension the rear main shaft and the cutting roller and realize that the inside of the rear locking assembly is separated into two parts so as to detach 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 tensioning of one screw rod.

Description

Automatic tensioning device for 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 slicer, an assembly method and the slicer.

Background

The high-purity crystal silicon is a basic raw material for the electronic and solar photovoltaic industries, and one of important production links in the production process of the crystal silicon wafer is slicing. With the development of the photovoltaic industry, the reliability requirement on the crystal silicon slicer is higher and higher. The utility model provides a CN201921707963.X, the name is a four-wheel drive slicer mechanism suitable for hard brittle material multi-wire cutting, discloses that front spindle, back main shaft are connected respectively to the both ends of cutting roller, and two cutting rollers all adopt two initiative main shafts to realize four-wheel drive, increase the stability of section, synchronous control precision is higher. At present, only one pull rod penetrates through the front main shaft and the cutting roller, the front end of the pull rod is fixed by using a nut, the rear end of the pull rod is connected with the rear main shaft through threads, and the front main shaft and the rear main shaft can only be tensioned and loosened at the same time and cannot be operated separately. Meanwhile, when only the front main shaft needs to be disassembled, the rear main shaft needs to be disassembled at the same time, and in addition, the length of the pull rod is too long, so that the adjustment operation is difficult.

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

Disclosure of Invention

The embodiment of the application provides an automatic tensioning device for a cutting roller of a crystal silicon slicer, an assembly method and the slicer, and aims to solve the technical problem that a traditional tensioning device only can tension a front main shaft and a rear main shaft simultaneously due to the fact that one screw rod is used for tensioning.

The embodiment of the application provides an automatic tensioning device of a cutting roller of a crystal silicon slicer, which is used for tensioning a rear main shaft, the cutting roller and a front main shaft into a whole; the automatic tensioning device includes:

The front spindle mounting seat is fixed at the front end of the cutting roller, the tension 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 tension rod and the front spindle mounting seat;

the rear locking assembly can be fixed into a whole and can be 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 rear locking assembly is internally fixed into a whole to tension the rear main shaft and the cutting roller and realize that the rear locking assembly is internally separated into two parts to detach 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 movement mechanism, the spring in a compressed state and the first movement mechanism; the spring is connected with the second movement mechanism and the first movement mechanism, and the second movement mechanism is connected with the tension rod;

Wherein the rear end of the first movement mechanism can be contracted and expanded; when the tension rod is not acted by external force, the relative positions of the second movement mechanism and the first movement mechanism are in an initial state, and the rear end of the first movement mechanism is kept contracted; the first movement mechanism and the second movement mechanism are used for moving backwards when the tension rod moves backwards, and the rear end of the first movement mechanism is changed from shrinkage to expansion.

In practice, the second movement mechanism comprises:

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

The first movement mechanism includes:

the clamping jaw, the clamping jaw fixing seat and the positioning screw 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 jaw fixing seat is sleeved in the jaw sleeve, so that the first movement mechanism can move in the front-back direction relative to the jaw sleeve;

The free end of the positioning screw extends out of the through hole on the side of the claw sleeve, a step surface is arranged in the cutting roller, the step surface is matched with the positioning screw to limit the limiting position of the positioning screw to move towards the rear spindle, and the limiting position corresponds to the first preset position of the second movement mechanism when the second movement mechanism moves backwards to the cutting roller.

In practice, the second movement mechanism further comprises:

a connecting rod; the rear end of the connecting rod is fixedly connected with the claw sleeve, so that the claw sleeve is fixedly connected with the connecting rod to form a second movement 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 which is used for being installed at the cutting roller, and the screw rod part of the rear locking screw can prop against the jaw sleeve.

In the implementation, the holding cavity is formed in the claw sleeve and is sequentially divided into a clamping cavity, an expanding cavity and a sliding cavity which are different in cavity diameter and are communicated from back to front, the cavity diameter of the expanding 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 expanding cavity; wherein:

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

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

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

In practice, the front locking assembly comprises:

A screw; the screw rod is used for penetrating into the shaft hole of the front main shaft, one end of the screw rod is used for fixedly connecting with the telescopic mechanism through the through hole reserved in the front main shaft mounting seat, and the other end of the screw rod is used for penetrating into the shaft hole of the front main shaft so as to be convenient for mounting a locking nut to tighten the front main shaft.

In practice, 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 prop against the side surface of the front spindle mounting seat so as to lock the positions of the cutting roller and the tension rod.

In practice, the automatic tensioning device further comprises:

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

The disc springs are sleeved on the periphery of the tension rod, located between the tension rod and the cutting roller and located 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 a rear main shaft, a cutting roller and a front main shaft into a whole for the first time, wherein the first tensioning step comprises the following steps:

firstly, the separated rear locking component is fixed into a whole, so that the main shaft and the cutting roller after tensioning are realized;

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 main shaft mounting seat and the front end of the cutting roller to enable the telescopic mechanism to be in an initial shrinkage state;

Finally, the tensioning of the tensioning cutting roller and the front main shaft is realized through the telescopic mechanism and the front locking assembly.

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

A slicer, comprising:

A rear spindle, a cutting roller and a front spindle;

The automatic tensioning device.

By adopting the technical scheme, the embodiment of the application has the following technical effects:

The automatic tensioning device of the cutting roller of the crystal silicon slicer comprises three parts, namely a rear locking assembly, a front locking assembly, a tensioning rod, a telescopic mechanism and a front spindle mounting seat, wherein the tensioning rod, the telescopic mechanism and the front spindle mounting seat are arranged between the rear locking assembly and the front locking assembly. The front spindle mounting seat is fixed at the front end of the cutting roller. The rear locking assembly is a fixable and separable rear locking assembly. The telescopic mechanism stretches out and draws back and drives the tensioning rod to stretch out and draw back, and then the inside fixed back main shaft and the cutting roller in order to take up of back locking subassembly, can also realize the inside separation of back locking subassembly in order to dismantle the back main shaft. The tensioning rod, the telescopic mechanism and the front main shaft 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 realizing the tensioning of the rear main shaft and the dismounting of the rear main shaft. The tensioning of the rear main shaft is realized through the rear locking assembly and the telescopic mechanism, and the tensioning of the front main shaft is realized through the front locking assembly. That is, the tensioning of the rear spindle and the front spindle is effected separately by two independent constructions, so that at least the tensioning of the rear spindle and the front spindle can be effected separately. The technical effects brought by the separate tensioning of the rear spindle and the front spindle at least comprise that proper tensioning forces can be respectively configured for the tensioning of the rear spindle and the tensioning of the front spindle, so that the service lives of the rear spindle and the front spindle are less, the rear spindle and the front spindle 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 specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:

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

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

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

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

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

FIG. 6 is a schematic view of the front end of the tension rod 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 jaw case of FIG. 10;

FIG. 12 is a schematic view of a jaw and jaw mount secured together;

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

Reference numerals:

The device comprises a 1-cutting roller, a 2-tensioning rod, a 21-tensioning rod front end hole, a 3-screw rod, a 4-front main shaft, a 5-locking nut, a 6-blind rivet, a 61-bulge, a 7-rear main shaft, an 8-claw, an 81-claw piece, an 82-wing edge, a 9-claw fixing seat, a 10-claw sleeve, a 101-clamping cavity, a 102-expanding cavity, a 103-sliding cavity, a 104-claw sleeve side through hole, a 11-connecting rod, a 12-positioning screw, a 13-pre-tightening sleeve, a 14-disc spring, a 15-front locking screw, a 16-rear locking screw, a 17-spring, an 18-step surface and a 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 detailed description of exemplary embodiments of the present application is provided in conjunction with the accompanying drawings, and it is apparent that the described embodiments are only some embodiments of the present application and not exhaustive of all embodiments. It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other.

At present, a cutting roller of a crystal silicon slicing machine is automatically tensioned, a long pull rod penetrates through a front main shaft and the cutting roller, then the front main shaft end is fixed by using a nut, 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 at the same time, 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 lower than that of the rear main shaft, and the replacement time of the front main shaft and the replacement time of the rear main shaft are asynchronous; in addition, the disassembly of the front and rear spindles cannot be operated separately; when only the front main shaft is disassembled, the rear main shaft is disassembled at the same time, the length of the long pull rod is too long, and the adjustment operation is difficult.

Example 1

As shown in fig. 1,2 and 3, an automatic tensioning device of 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 tensioning device includes:

The cutting device comprises a tensioning 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 a cutting roller, the tensioning rod is sleeved in the cutting roller 1, and the tensioning rod is in clearance fit with the cutting roller; the front spindle 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 tension rod and the front spindle mounting seat;

The rear locking assembly can be fixed into a whole and can be 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 the fact that the rear locking assembly is internally fixed into a whole to tension the rear main shaft 7 and the cutting roller 1 and realize the separation of the rear locking assembly so as to detach the rear main shaft 7;

a front locking assembly for tightening the telescopic mechanism 21 and the front spindle 4.

The automatic tensioning device of the cutting roller of the crystal silicon slicer comprises three parts, namely a rear locking assembly, a front locking assembly, a tensioning rod 2, a telescopic mechanism 21 and a front spindle mounting seat 22, wherein the tensioning rod 2, the telescopic mechanism 21 and the front spindle mounting seat 22 are arranged between the rear locking assembly and the front locking assembly. The tensioning rod 2, the telescopic mechanism 21 and the front spindle mounting seat 22 are arranged, and the front spindle mounting seat is 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 out and draws back, drives the tensioning rod and stretches out and draws back for the cutting roller and the front spindle mount pad that are fixed together, can realize that back locking subassembly is inside fixed in order to tighten back main shaft 7 and cutting roller 1 as an organic whole, can also realize that the inside separation of back locking subassembly is two parts in order to dismantle back main shaft 7. The tension rod 2, the telescopic mechanism 21 and the front spindle mount 22 are mainly provided, and the telescopic mechanism 21 can be telescopic. The rear locking assembly can be fixed into a whole and can be separated into two parts, and the main shaft and the detachable rear main shaft can be tensioned through the expansion and contraction of the expansion mechanism. The tensioning and the disassembly of the rear main shaft are realized through the rear locking assembly and the telescopic mechanism, and the tensioning of the front main shaft is realized through the front locking assembly. That is, the tensioning of the rear spindle and the front spindle is effected separately by two independent constructions, so that at least the tensioning of the rear spindle and the front spindle can be effected separately. The technical effects brought by the separate tensioning of the rear spindle and the front spindle at least comprise that proper tensioning forces can be respectively configured for the tensioning of the rear spindle and the tensioning of the front spindle, so that the service lives of the rear spindle and the front spindle are less, the rear spindle and the front spindle 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 alignment direction of the front spindle 4 and the rear spindle 7 is the front-rear direction. In the present application, the 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 cutter roll 1 and the front spindle 4 are assembled into one body for the first time, a first tightening step is required, which includes:

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, two separable parts of the rear locking assembly are in a separation 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 assembly is fixed into a whole, the rear main shaft and the cutting roller are tensioned, and the tensioned tensioning force needs to be manually adapted at the moment;

Then, fixing the rear end of the telescopic mechanism with the front end of the tensioning 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 the moment, the tension rod is static relative to the cutting roller, the front main shaft mounting seat 22 is also static relative to the cutting roller, the telescopic mechanism is in an initial shrinkage state, and the telescopic mechanism corresponds to the initial length;

finally, the tensioning of the tightening cutting roller 1 and the front spindle 4 is achieved by means of the telescopic mechanism 21 and the front locking assembly.

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

When the front spindle 4 needs to be disassembled, the step of disassembling the front spindle is performed, and comprises the following steps:

Loosening the front main shaft through a front locking assembly to realize loosening of the front main shaft 4;

when the rear spindle 7 needs to be disassembled, the step of disassembling the rear spindle is performed, and comprises the following steps:

firstly, the telescopic mechanism 21 stretches to push the tension rod 2 to move backwards, and the rear locking component which is fixed into a whole is driven to realize separation and release of the rear main shaft 7;

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

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

In practice, after the step of first tightening and after the detachment of the rear and front spindles, a subsequent tightening step is also included, comprising:

as shown in fig. 2, when the cutting roller 1 and the front main shaft 4 need to be tensioned, the tensioning of the cutting roller 1 and the front main shaft 4 is realized through the fixed connection of the telescopic mechanism 21 and the front locking component;

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 made to extend to push the tensioning rod 2 to move backwards, so as to drive the separated rear locking components to be fixed into a whole, and the rear locking components fixed into a whole are fixedly connected with the rear main shaft 7; and then, the telescopic mechanism resets to drive the rear locking assembly to reset forward to an initial shrinkage state, so that the tensioning of the cutting roller 1 and the rear main shaft 7 is realized. As step a.

Thus, the tensioning of the front main shaft and the tensioning of the rear main shaft are independent, and 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 realized independently without separating the order except the first tensioning.

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

a blind rivet 6 for fixing to the front end of the rear spindle 7; the rear locking assembly can be separated into two parts, one separated part is a blind rivet, and the other part except the blind rivet is the other part;

the second movement mechanism, the spring 17 in a compressed state and the first movement mechanism, wherein the spring 17 is connected with the second movement mechanism and the first movement mechanism, and the second movement mechanism is movably connected with the tension rod; wherein:

Wherein the rear end of the first movement mechanism can be contracted and expanded; when the tension rod is not acted by external force, the relative positions of the second movement mechanism and the first movement mechanism are in an initial state, and the rear end of the first movement mechanism is kept contracted; the first movement mechanism and the second movement mechanism are used for moving backwards when the tension rod moves backwards, and the rear end of the first movement mechanism is changed from shrinkage to expansion.

The spring 17 in the compressed state acts to bring the relative positions of the second and first movement mechanisms to an initial state in which the rear end of the first movement mechanism remains contracted when the tension lever is not subjected to an external force. That is, when the tension rod is not acted by external force, the rear end of the first movement mechanism keeps contracting, and at the moment, the rear end of the first movement mechanism is hollow and does not hold the tension nail.

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

And then, the free end of the blind rivet fixed at the front end of the rear main shaft stretches into the rear end of the expanded first movement mechanism, so that conditions are prepared for holding the blind rivet at the rear end of the subsequent first movement mechanism.

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

When the tension rod is pulled forwards, the spring is compressed greatly, the spring moves forwards against the first movement mechanism, the relative positions of the second movement mechanism and the first movement mechanism are reset to an initial state, and the rear end of the first movement mechanism is reset to be contracted from expansion to hold the blind rivet; when the tension rod pulls forwards a little, the rear end of the first movement mechanism holds the tension nail;

After the rear end of the first movement mechanism holds the blind rivet tightly, when the tension rod continues to be pulled forwards, the relative positions of the second movement mechanism and the first movement mechanism keep moving forwards in an initial state until the 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 case 10 has a jaw case side through hole 104;

The first movement mechanism includes:

the clamping jaw 8, the clamping jaw fixing seat 9 and the 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; wherein the claw fixing seat 9 is sleeved in the claw sleeve 10 so that the first movement mechanism can move relative to the claw sleeve 10 in the front-back direction;

The free end of the positioning screw 12 extends out of the through hole 104 on the jaw sleeve side, a step surface 18 is arranged in the cutting roller 1, the step surface 18 and the positioning screw 12 cooperate to limit the limiting position of the positioning screw 12 to move towards the rear spindle 7, and the limiting position corresponds to the first preset position of the cutting roller when the second movement mechanism moves backwards. 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 it abuts against the step surface 18.

In practice, as shown in fig. 2, 4 and 6, 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, namely the jaw sleeve 10 and the connecting rod 11 are fixedly connected into a whole to be used as a second movement mechanism; the front end of the connecting rod 11 is movably connected with the tensioning rod 2 through threads, and the tensioning rod 2 can move along threads relative to the connecting rod;

The automatic tightening mechanism further comprises a rear locking screw 16 for mounting at the cutting roll, and the shank portion of the rear locking screw 16 is capable of abutting the jaw case 10.

When the rear spindle needs to be tightened, the shank portion of the rear locking screw 16 is first lightly held against the jaw case 10, i.e. pretensioned. Thus, when the tension rod 2 is rotated, since the jaw cover 10 is lightly supported by the screw portion of the rear locking screw 16, the second movement mechanism cannot be rotated synchronously with the rotation of the tension rod 2, and the second movement mechanism can be moved only along the length direction of the screw thread with the rotation of the tension rod 2. The tightening rod 2 is screwed tightly to drive the claw sleeve 10 and the connecting rod 11 which are used as the second movement mechanism to move along the front-back direction;

After the rear main shaft is tensioned, the screw rod part of the rear locking screw 16 is propped against the jaw sleeve 10 to fix the position of the jaw sleeve 10, so that the position of the second movement mechanism is fixed, the position of the jaw sleeve 10 is fixed, looseness cannot occur, and the tensioned state is kept unchanged.

The rear end of the spring 17 is clamped at the periphery of the claw 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, that is, when the tension rod is not acted by external force, the relative positions of the second movement mechanism and the first movement mechanism are in an initial state, and the rear end of the first movement mechanism keeps contracting.

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 jaw fixing seat 9.

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

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

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

When the tension rod 2 is not acted by external force, the spring pushes the first movement mechanism as a whole to enable the wing edges 82 of the clamping jaws 8 to be kept in the clamping cavity 101 so as to enable the wing edges 82 of the clamping jaws 8 to retract;

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) which are integrated with the clamping jaw sleeve 10 and the connecting rod 11 (namely the second movement mechanism) which are integrated with each other 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 and the compression spring is further compressed, the wing edges 82 of the clamping jaw 8 enter the expansion cavity 102 to form a horn mouth, and the free ends of the pulling nails 6 fixed at the front end of the rear main shaft 7 extend into the wing edges 82 expanded by the clamping jaw 8.

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

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

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

In practice, as shown in fig. 2, after the other end of the blind rivet 6 is inserted in the jaw 8, the tensioning rod 2 is pulled forward, and correspondingly, the telescopic mechanism starts to shrink from extension to retraction, wherein:

The jaw case 10 and the connecting rod 11 (i.e. the second movement mechanism) as a whole move forward, and the jaw 8, the jaw fixing seat 9 and the set screw 12 (i.e. the first movement mechanism) as a whole remain motionless due to the return of the compression spring, and the jaw case 10 moves forward until the wings 82 of the jaw 8 enter the clamping cavity 101 and the jaw contracts to clamp the rivet 6.

In the implementation, after the claw contracts and holds the pull nail 6, the pull rod 2 continues to be pulled forward, and correspondingly, the telescopic mechanism continues to contract and reset, wherein:

The jaw housing 10 and the connecting rod 11 as a whole are moved forward with the jaw 8, the jaw fixing seat 9 and the set screw 12 as a whole until the 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 completely screwed into the threaded holes at the front end 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 shank portion of the rear locking screw 16 is first gently pushed against the jaw housing 10. Thus, when the tension rod 2 is rotated, since the jaw cover 10 is lightly supported by the screw portion of the rear locking screw 16, the second movement mechanism cannot be rotated synchronously with the rotation of the tension rod 2, and the second movement mechanism can be moved only along the length direction of the screw thread with the rotation of the tension rod 2. The tightening rod 2 is screwed tightly to drive the claw sleeve 10 and the connecting rod 11 which are used as the second movement mechanism to move along the front-back direction; thereby realizing the spindle after installation.

After the rear main shaft is tensioned, the screw rod part of the rear locking screw 16 is propped against the jaw sleeve 10 to fix the position of the jaw sleeve 10, so that the position of the second movement mechanism is fixed, the position of the jaw sleeve 10 is fixed, looseness cannot occur, and the tensioned state is kept unchanged.

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

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

In practice, the telescopic mechanism 21 is a cylinder, and the cylinder is used for ventilating the cylinder through a cylinder air hole 23 to extend the cylinder, and after ventilation is finished, the cylinder is reset to an initial contracted 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 into the shaft hole of the front main shaft 4, one end of the screw rod 3 is used for fixedly connecting with the telescopic mechanism through a through hole reserved in the front main shaft mounting seat 22, and the other end of the screw rod 3 is used for penetrating into the shaft hole of the front main shaft 4 so as to be convenient for mounting a locking nut to tighten the front main shaft.

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

Thus, the tensioning of the front main shaft 4 can be conveniently realized through the telescopic mechanism, the screw rod 3 and the locking nut 5.

When the rear spindle 7, the cutting roller 1 and the front spindle 4 are assembled and tensioned for the first time, the step of tensioning for the first time is carried out, which is sequentially required, and the rear spindle is required to be tensioned first and then the front spindle is required to be tensioned. The step of the main shaft after the tensioning in the first tensioning step is as follows:

step A10: as shown in fig. 3, a wrench is used to screw the front end hole 21 of the front end of the tensioning rod 2 (the tensioning rod is driven to move towards the rear main shaft by the action of manual force, the separated rear locking assembly is fixed into a whole, the rear main shaft and the cutting roller are tensioned, the tensioning force is required to be manually adapted at the moment), and after the tightening, a cylinder is installed in the front end hole 21 of the tensioning 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 shrinkage state; that is, thereafter, as long as the air cylinder is in the initial contracted state and the rear main shaft and the cutter roll are pulled together, the pulling force between the rear main shaft and the cutter roll reaches the preset requirement.

Thereafter, as shown in fig. 2, the method further comprises the following steps:

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

Step S120: the air hole 23 of the air cylinder is used for ventilating the air cylinder, and the air cylinder stretches to drive the tension rod 2 to move backwards; the tensioning rod 2 sequentially drives the connecting rod 11 and the claw sleeve 10 to move backwards; 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 jaw fixing seat 9, the positioning screw 12 and the jaw 8 cannot always move backwards, because the positioning screw 12 cannot move backwards after reaching the position of the step surface 18;

Step S130: the cylinder continues to stretch and 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 is not moved any more; however, the jaw cover 10 continues to move backwards, and the backward movement of the jaw cover 10 causes the wing edges 82 on the jaws 8 to enter the expansion cavity 102 from the clamping cavity 101, and the wing edges 82 expand;

Step S140: at this time, the blind rivet 6 is introduced into the jaw sleeve 10 from the rear end of the jaw sleeve 10 and then into the open wing edges 82 located in the expansion chamber 102; at this time, the ventilation of the cylinder is stopped, and the cylinder starts to shrink;

step S150: the cylinder contracts to pull the tensioning rod 2 to move forwards, the connecting rod 11 drives the jaw sleeve 10 to move forwards, at the moment, the jaw fixing seat 9, the positioning screw 12 and the jaw 8 are not moved forwards under the action of the spring 17, the jaw sleeve 10 moves forwards until the wing edges 82 of the jaw 8 enter the clamping cavity 104, and at the moment, the wing edges 82 contract to tightly clamp the protrusions 61;

Step S160: the cylinder continues to shrink and pull the tensioning rod 2 to move forwards, and the connecting rod 11 drives the jaw sleeve 10 and the jaw 8 jaw fixing seat 9 of the blind rivet 6 to move forwards until the cylinder resets and the rear main shaft 7 is tensioned. And assembling the spindle for the first time after the completion.

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

After the first tensioning is completed, the front main shaft and the rear main shaft are detached without sequential requirements. After the first assembly is completed, when the rear main shaft and the front main shaft are required 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, only the lock nut 5 needs to be unscrewed, and the front main shaft 4 can be detached from the screw 3.

When the rear main shaft needs to be detached alone,

Step C10: the air hole 23 of the air cylinder is used for ventilating the air cylinder, and the air cylinder stretches to drive the tension rod 2 to move backwards; the tensioning rod 2 sequentially drives the connecting rod 11 and the claw sleeve 10 to move backwards; 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 jaw fixing seat 9, the positioning screw 12 and the jaw 8 cannot always move backwards, because the positioning screw 12 cannot move backwards after reaching the position of the step surface 18;

step C20: the cylinder continues to stretch and 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 is not moved any more; however, the jaw cover 10 continues to move backwards, and the backward movement of the jaw cover 10 causes the wing edges 82 on the jaws 8 to enter the expansion cavity 102 from the clamping cavity 101, and the wing edges 82 expand;

Step C30: at this point, the blind rivet 6 is pulled away from the rear end of the jaw case 10, away from the jaw case 10 and further away from the open flange 82 in the expansion chamber 102; at this time, the ventilation of the cylinder is stopped, and the cylinder starts to shrink;

Step C40: the cylinder contracts to pull the tensioning rod 2 to move forwards, the connecting rod 11 drives the jaw sleeve 10 to move forwards, at the moment, the jaw fixing seat 9, the positioning screw 12 and the jaw 8 are not moved forwards under the action of the spring 17, the jaw sleeve 10 moves forwards until the wing edges 82 of the jaw 8 enter the clamping cavity 104, at the moment, the wing edges 82 contract, and no structure is held in the wing edges;

Step C50: the cylinder continues to shrink and pull the tensioning rod 2 to move forwards, the connecting rod 11 drives the jaw sleeve 10 and the jaw 8 jaw fixing seat 9 of the blind rivet 6 to move forwards until the blind rivet 6 and the jaw are completely separated when the cylinder resets, and the rear main shaft 7 is detached.

After the first assembly and tensioning are completed, the front main shaft and the rear main shaft are disassembled, if the rear main shaft 7, the cutting roller 1 and the front main shaft 4 are required to be tensioned again into a whole, the front main shaft can be tensioned first and then the rear main shaft can be tensioned; or the front main shaft can be tensioned after the rear main shaft is tensioned.

The step of tightening the front spindle corresponds to step a 20.

The step of tightening the post spindle corresponds to steps S110 to S160.

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

A front locking screw 15 for being installed at the cutting roll, and a screw portion of the front locking screw 15 can be abutted against a side surface of the tension rod 2 to lock the positions of the cutting roll and the tension rod 2.

The front locking screw 15 cooperates with the side of the tightening rod 2 to lock the position of the cutting roller and the tightening rod 2. The tension rod 2 is prevented from rotating during the working process of the cutting roller of the crystal silicon slicer.

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

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

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

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

The pretensioning sleeve 13 can reduce the shake of the tension rod 2 in the radial direction, and improve the stability of the tension rod 2. The disc spring 14 prevents the pretensioning sleeve 13 from shaking. That is, by providing the pretensioning bush 13 and the disc spring 14, the stability of the tension rod 2 and the cutting roller 1 is improved, and the precision of slicing the crystal silicon is ensured.

Specifically, as shown in fig. 6 and 7, in order to facilitate the holding jaw 8 to hold the pull nail 6, one end of the pull nail 6 inserted into the holding jaw 8 protrudes to the outer periphery of the pull nail 6 to form a protrusion 61, and the protrusion 61 is inserted into the holding jaw 8.

In practice, as shown in fig. 7, the projections 61 are truncated cone-shaped. The clamping jaw 8 is formed by surrounding a plurality of clamping jaw pieces 81, one end of the clamping jaw pieces 81 is connected with the clamping jaw fixing seat 9, and the other end of the clamping jaw pieces is bent to form a wing edge 82.

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

In particular, a thrust bearing 20 is also included, arranged at the gap between the tie rod 2 and the pretensioning bush 13. The presence of the thrust bearing 20 prevents dry friction between the tightening rod 2 and the pretensioning sleeve 13.

Disc spring 14, pretensioning sleeve 13 and thrust bearing 20 act: when the front end of the tension rod 2 is rotated, the thrust bearing 20 rotates, preventing the disc spring 14 and the pretensioning bush 13 from following rotation. After tightening the tension rod 12, the compressed disc spring 14 contracts, preventing the tension rod 2 from being pressed against the right end face of the cutter roll 1 in its entirety.

Example two

As shown in fig. 1 to 6, an assembling method of an automatic tightening device according to an embodiment of the present application includes a first tightening step of assembling and tightening a rear spindle 7, a cutter roll 1, and a front spindle 4 into one body for the first time, the first tightening step including:

firstly, the separated rear locking component is fixed into a whole, so that the rear main shaft 7 and the cutting roller 1 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 22;

then, fixing the front spindle mounting seat 22 with the front end of the cutting roller to enable the telescopic mechanism to be in an initial shrinkage state;

finally, the tensioning of the tightening cutting roller 1 and the front spindle 4 is achieved by means of the telescopic mechanism 21 and the front locking assembly.

In the first tensioning, the tensioning of the rear main shaft is required to be carried out firstly, and then the tensioning of the front main shaft is carried out, so that the strict sequence is adopted. But the subsequent tightening of the rear spindle and the front spindle do not need to be in order.

In practice, after the step of tensioning, a step of disassembling the front spindle is also included, the step of disassembling the front spindle comprising:

The front spindle 4 is released by releasing the front spindle by means of a front locking assembly.

In practice, after the step of tensioning, the method further comprises a step of disassembling the rear spindle, wherein the step of disassembling the rear spindle comprises:

firstly, the telescopic mechanism 21 stretches to push the tension rod 2 to move backwards, and the rear locking component which is fixed into a whole is driven to realize separation and release of the rear main shaft 7;

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

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

In practice, after the step of first tightening and after the detachment of the rear and front spindles, a subsequent tightening step is also included, comprising:

The tensioning of the tensioning cutting roller 1 and the front main shaft 4 is realized through the fixed connection of the telescopic mechanism 21 and the front locking component;

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

In the subsequent tightening step, there is no requirement of sequence in the step of tightening the front spindle 4 and the rear spindle 7.

In practice, step a comprises:

the telescopic mechanism 21 stretches and pushes the tension rod 2 to move backwards, the second moving mechanism and the first moving mechanism move backwards together, the second moving mechanism cannot move backwards after moving backwards to a first preset position of the cutting roller, the first moving mechanism moves backwards continuously, the relative position of the second moving mechanism and the first moving mechanism is in a compression limit state, the tension rod stops moving backwards, and the rear end of the first moving mechanism is changed from shrinkage to expansion; as step X; at the moment, the rear end of the first movement mechanism expands, so that a precondition 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 is extended into the rear end of the expanded first movement mechanism, and the telescopic mechanism does not push the tension rod to move backwards. I.e. the free end of the blind rivet has now entered the rear end of the expanded first movement mechanism.

By means of an action-the extension of the telescopic mechanism 21 pushing the tension rod 2 backwards, a backwards movement of the second movement mechanism and a change of the second movement mechanism from contracted to expanded is achieved, providing conditions for the free end entry of the blind rivet.

In practice, step a further comprises:

after the free end of a blind rivet fixed at the front end of a rear main shaft stretches into the rear end of a first expanding movement mechanism, when a telescopic mechanism contracts to drive a tensioning rod to move forwards, the first movement mechanism moves forwards first, the relative position of the second movement mechanism and the first movement mechanism is reset to an initial state, and the rear end of the first movement mechanism is reset from expansion to contraction so as to clamp the blind rivet; as step E;

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

The tensioning rod is driven to move forwards by the contraction of the action-telescopic mechanism, so that the rear end of the second movement mechanism is used for holding the blind rivet, and the main shaft and the cutting roller after tensioning are realized. The whole tensioning step is few, and the manual operation in the tensioning step is simple in work and convenient to realize tensioning.

In practice, step X specifically includes:

The telescopic mechanism 21 stretches and pushes the tension rod 2 to move backwards, the first moving mechanism and the second moving mechanism firstly move backwards, the first moving mechanism cannot move backwards when the step surface 18 blocks the positioning screw 12, the claw sleeve 10 continues to move backwards, the compression spring is further compressed, the wing edges 82 of the claw enter the expansion cavity 102 to form a horn mouth, and the free ends of the blind nails 6 fixed at the front end of the rear main shaft 7 extend into the wing edges 82 of the expansion claw.

The first movement mechanism is matched with the second movement 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 stretched into the wing edge 82 of the claw expansion.

In implementation, step E specifically includes:

The first moving mechanism moves forward, and the first moving mechanism is kept still due to the reset of the compression spring 17, and the jaw sleeve 10 moves forward until the wing edges 82 of the jaws enter the clamping cavity 101, and the jaws shrink to clamp the pull nails (6).

In describing the present application and its embodiments, it should be understood that the orientation or positional relationship indicated by the terms "top", "bottom", "height", etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description and simplification of the description, and are not indicative or implying that the apparatus or element in question must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present application.

In the present application and its embodiments, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrated; the device can be mechanically connected, electrically connected and communicated; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present application and its embodiments, unless explicitly specified and limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, and may also include both the first and second features not being in direct contact but being in contact with each other by way of additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is less level than the second feature.

The above disclosure provides many different embodiments, or examples, for implementing different structures of the application. The foregoing description of specific example components and arrangements has been presented to simplify the present disclosure. They are, of course, merely examples and are not intended to limit the application. Furthermore, the present application may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed. In addition, the present application provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.

While 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. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the application.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present application without departing from the spirit or scope of the application. Thus, it is intended that the present application also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims (17)

1. An automatic tensioning device of a cutting roller of a crystal 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; the automatic tensioning device is characterized by comprising:

The cutting device comprises a tension 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 a cutting roller, the tension rod is sleeved in the cutting roller (1) and is in clearance fit with the cutting roller, and two ends of the telescopic mechanism are respectively fixed with the tension rod and the front spindle mounting seat;

The rear locking assembly can be fixed into a whole and can be 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 rear locking assembly is internally fixed into a whole to tension the rear main shaft (7) and the cutting roller (1) and realize that the rear locking assembly is internally separated into two parts to detach the rear main shaft (7);

a front locking assembly for tightening the telescopic mechanism (21) and the front spindle (4);

The rear locking assembly includes:

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 movement mechanism and the first movement mechanism, and the second movement mechanism is connected with the tension rod;

The front locking assembly includes:

A screw (3); the screw rod (3) is used for penetrating into the shaft hole of the front main shaft (4), one end of the screw rod (3) is used for fixedly connecting with the telescopic mechanism through the through hole reserved in the front main shaft mounting seat (22), and the other end of the screw rod is used for penetrating into the shaft hole of the front main shaft (4) so as to be convenient for mounting a locking nut to tighten the front main shaft.

2. The automatic tightening device according to claim 1, characterized in that,

Wherein the rear end of the first movement mechanism can be contracted and expanded; when the tension rod is not acted by external force, the relative positions of the second movement mechanism and the first movement mechanism are in an initial state, and the rear end of the first movement mechanism is kept contracted; the first movement mechanism and the second movement mechanism are used for moving backwards when the tension rod moves backwards, and the rear end of the first movement mechanism is changed from shrinkage to expansion.

3. The automatic tensioning device of claim 2, wherein 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; the claw sleeve (10) is provided with a claw sleeve side through hole (104);

The first movement mechanism includes:

The clamping jaw (8), the clamping jaw fixing seat (9) and the 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 movement mechanism can move in the front-back direction relative to the claw sleeve;

The free end of the positioning screw (12) extends out of the through hole (104) on the side of the claw 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 limiting position of the positioning screw to move towards the rear spindle, and the second movement mechanism moves backwards to a first preset position of the cutting roller correspondingly.

4. The automatic tensioning device of 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 into a second movement 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) for being mounted at the cutting roller, and the threaded portion of the rear locking screw (16) can bear against the jaw sleeve (10).

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

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

When the tension rod (2) is not acted by external force, the spring pushes the first movement mechanism to enable the wing edges (82) of the clamping jaws to be kept in the clamping cavity (101) so as to enable the wing edges (82) of the clamping jaws to retract.

6. The automatic tensioning device of claim 1, wherein the telescoping mechanism is a cylinder for venting the cylinder through a cylinder vent to extend the cylinder and resetting the cylinder to an initial contracted state after venting is completed.

7. The automatic tensioning device of claim 6, wherein the front locking assembly further comprises:

And 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 prop against the side surface of the front spindle mounting seat (22) so as to lock the positions of the cutting roller and the tension rod (2).

8. The automatic tensioning device of claim 7, further comprising:

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

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

9. A method of assembling an automatic tightening device according to any one of claims 1 to 8, comprising a first tightening step of assembling and tightening the rear spindle (7), the cutting roll (1) and the front spindle (4) in one piece, the first tightening step comprising:

Firstly, a rear main shaft (7) and a cutting roller (1) are tensioned by fixing a separated rear locking assembly into a whole;

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 a front main shaft mounting seat (22);

Then, fixing the front spindle mounting seat (22) with the front end of the cutting roller to enable the telescopic mechanism to be in an initial shrinkage state;

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

10. The method of assembling of claim 9, 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.

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

firstly, a telescopic mechanism (21) stretches to push the tension rod (2) to move backwards, and a rear locking assembly fixed into a whole is driven to realize separation and release of the rear main shaft (7);

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

12. The method of assembling of claim 11, further comprising a subsequent tightening step after the step of first tightening and after the step of removing the rear spindle and the front spindle, the subsequent tightening step comprising:

The tensioning 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) stretches to push the tension rod (2) to move backwards, the separated rear locking assembly is driven to be fixed into a whole, and the rear locking assembly fixed into a whole is fixedly connected with the rear main shaft (7); then, the telescopic mechanism resets to drive the rear locking assembly to reset forward to an initial shrinkage state, so that the tensioning of the cutting roller (1) and the rear main shaft (7) is realized; as step a.

13. The method of assembly of claim 12, wherein step a comprises:

The telescopic mechanism (21) stretches and pushes the tension rod (2) to move backwards, the second movement mechanism and the first movement mechanism move backwards together, the second movement mechanism cannot continue to move backwards after moving backwards to a first preset position of the cutting roller, the first movement mechanism continues to move backwards, the relative position of the second movement mechanism and the first movement mechanism stops moving the tension rod backwards after being in a compression limit state, and the rear end of the first movement mechanism is changed from shrinkage to expansion; as step X;

The free end of the blind rivet fixed at the front end of the rear main shaft is extended into the rear end of the expanded first movement mechanism, and the telescopic mechanism does not push the tension rod to move backwards.

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

after the free end of a blind rivet fixed at the front end of a rear main shaft stretches into the rear end of a first expanding movement mechanism, when a telescopic mechanism contracts to drive a tensioning rod to move forwards, the first movement mechanism moves forwards first, the relative position of the second movement mechanism and the first movement mechanism is reset to an initial state, and the rear end of the first movement mechanism is reset from expansion to contraction so as to clamp the blind rivet; as step E;

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

15. The method of assembly according to claim 14, characterized in that step X comprises in particular:

The telescopic mechanism (21) stretches and pushes the tension rod (2) to move backwards, the first moving mechanism and the second moving mechanism firstly move backwards, the first moving mechanism cannot move backwards when the step surface (18) blocks the positioning screw (12), the claw sleeve (10) continues to move backwards and the compression spring is further compressed, the wing edges (82) of the claw 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) stretch into the wing edges (82) of the expansion of the claw.

16. The method of assembly of claim 15, wherein step E comprises:

the first moving mechanism moves forwards, and the first moving mechanism is kept motionless 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 clamp the pull nails (6).

17. A slicer, comprising:

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

An automatic tensioning device as claimed in any one of claims 1 to 8.