CN214605229U - Cutting machine - Google Patents

Abstract

The utility model relates to a clipper, including base, cutting mechanism and fixture more than two: the base is used for transporting the hard and brittle bar stock, the cutting mechanism is arranged on the base, and the cutting mechanism is used for cutting the hard and brittle bar stock; more than two fixture follows the direction of transportation setting of hard and brittle bar, fixture is used for right in vertical direction the hard and brittle bar carries out the centre gripping, and can adjust hard and brittle bar is in the ascending position of vertical direction, wherein two arbitrary fixture mutually supports, is used for adjusting two fixture centre gripping the center of hard and brittle bar is located same horizontal plane. Be different from prior art, the utility model discloses a two fixture can adjust the position of hard and brittle bar in vertical side makes the center of two cutting planes be located same horizontal plane to guarantee the depth of parallelism of two cutting planes, the transportation, the use of the hard and brittle bar of being convenient for.

Description

Cutting machine

Technical Field

The utility model relates to a hard and brittle bar cutting technical field, in particular to clipper.

Background

In the prior art, a single-station cutting machine places a hard and brittle bar material on a roller train, and the hard and brittle bar material is clamped by an auxiliary feeding mechanism at the side edge or is sucked by a suction disc device at the front end and then is fed in an auxiliary manner, and the material moving is realized by taking the outer surface of the hard and brittle bar material as a reference. Although the existing lifting technology is rapidly improved, the outer surface of the hard and brittle bar stock is not flat, so that the parallelism error of the front and rear cutting surfaces is large, and the cutting quality is poor.

More information about the above solution can also be found in the following documents:

in chinese utility model patent with publication number CN201755873U, a double V-shaped silicon rod supporting seat for silicon rod cutting machine is disclosed, including bottom plate, left V-shaped positioning seat, right V-shaped positioning seat, ear seat, rotatory centre bore, synchronous ejector pin hole and circumference locating hole, left V-shaped positioning seat and right V-shaped positioning seat set up the left and right sides at the bottom plate symmetrically, are equipped with the ear seat in the bilateral symmetry of V-shaped locating surface, offer synchronous ejector pin hole in the below of V-shaped locating surface, offer rotatory centre bore in the center of bottom plate, are equipped with the circumference locating hole in the outside of rotatory centre bore. The double-V-shaped positioning seat structure ensures that the silicon rod to be cut is reliably positioned, the rigidity is high after the clamping, the shaking phenomenon of the silicon rod to be cut in the cutting process is eliminated, the flatness of the cutting end face of the silicon rod is improved, the ear seat and the synchronous ejector rod hole are arranged, the swinging wall type pressing mechanism is convenient to install, and the rotating center hole and the circumferential positioning hole are arranged to meet the rotating and positioning requirements of the double-V-shaped silicon rod supporting seat.

In the chinese utility model patent with publication number CN201755874U, a synchronous clamping mechanism of silicon rod cutting jig, including the hand wheel, the screw shaft, the tappet, the V-arrangement positioning seat, adjusting screw, the round pin axle, right side pressure arm, left side pressure arm, the activity briquetting, the pressure regulating screw, the spring holder, reset spring and wait to press from both sides tight silicon rod, interval is equipped with two V-arrangement locating surfaces with sharp ground on the V-arrangement positioning seat, it is corresponding and the shape the same to control two pressure arms, the activity briquetting is equipped with in the outer end of two pressure arms, be equipped with the tappet between screw shaft and adjusting screw, the axis of tappet is perpendicular with the symmetry center line of V-arrangement locating surface, be equipped with pressure arm canceling release mechanical system about controlling between pressure arm and the V-arrangement locating seat, wait to press from both sides tight silicon rod and arrange in the V-arrangement locating surface, press from both sides the arm and press from both sides the arm synchronous tightly by a left side. Because the silicon rod to be clamped adopts a horizontal V-shaped groove supporting structure and the silicon rod to be clamped is synchronously pressed by the left pressing arm and the right pressing arm, the overall rigidity of the clamp when the silicon rod to be clamped is cut is improved, and the flatness of the cut end face of the silicon rod to be clamped is greatly improved.

In realizing the utility model discloses an in-process, the inventor finds to have following problem among the prior art, only supports single cutting plane among the prior art, can guarantee the plane degree of single cutting plane, and can't guarantee the depth of parallelism between two cutting planes, is unfavorable for the use of hard and brittle bar.

SUMMERY OF THE UTILITY MODEL

Therefore, a cutting machine is needed to be provided for solving the technical problem that in the prior art, only a single cutting surface is supported, the flatness of the single cutting surface can be ensured, and the parallelism between two cutting surfaces cannot be ensured.

In order to achieve the above object, the inventor provides a guillotine shear, which comprises a base, a cutting mechanism and more than two clamping mechanisms;

the base is used for transporting the hard and brittle bar stock, the cutting mechanism is arranged on the base, and the cutting mechanism is used for cutting the hard and brittle bar stock;

more than two fixture follows the direction of transportation setting of hard and brittle bar, fixture is used for right in vertical direction the hard and brittle bar carries out the centre gripping, and can adjust hard and brittle bar is in the ascending position of vertical direction, wherein two arbitrary fixture mutually supports, is used for adjusting two fixture centre gripping the center of hard and brittle bar is located same horizontal plane.

As an embodiment of the utility model, fixture is including compressing tightly subassembly and supporting component, the supporting component is used for making progress right the hard and brittle bar supports, it is used for down right to compress tightly the hard and brittle bar, compress tightly the subassembly with the supporting component is mutually supported, is used for the adjustment the center of hard and brittle bar is in the ascending height of vertical side.

As an embodiment of the utility model discloses an, it includes first drive unit, compact heap and displacement sensor to compress tightly the subassembly, first drive unit is used for driving the compact heap downwards right the hard and brittle bar compresses tightly, displacement sensor is used for detecting the positional information of compact heap, and will the positional information of compact heap sends for the control module of clipper.

As an embodiment of the utility model, the supporting component includes second drive unit, top tight piece and slide-bar, the setting of top tight piece is in on the slide-bar, the slide-bar with the transmission of second drive unit is connected, second drive unit is used for the drive the slide-bar drives the top tight piece is upwards right the top of hard and brittle bar is tight.

As an embodiment of the present invention, the base is provided with an edge the rack that the transport direction set up, the supporting component includes third drive unit and first gear, first gear sets up on third drive unit's the output shaft, third drive unit passes through first gear with the cooperation of rack is used for the drive fixture is in relative movement in the transport direction.

As an embodiment of the present invention, the cutting machine further includes a floating support mechanism, the floating support mechanism is disposed on one side of the cutting mechanism, and is used for right the cutting mechanism cuts off the hard and brittle bar material is supported.

As an embodiment of the present invention, the base is provided with an edge the rack that the transport direction set up, the floating support mechanism includes a fourth driving unit and a second gear, the second gear is provided on the output shaft of the fourth driving unit, the fourth driving unit passes through the second gear with the cooperation of rack is used for driving the floating support mechanism is in relative movement in the transport direction.

As an embodiment of the present invention, the floating support mechanism includes two or more support members, the two or more support members are arranged along the transport direction, the support members include two support portions which are arranged relatively, and the two support portions which are arranged relatively are respectively located on the left and right sides of the hard and brittle bar.

As an embodiment of the utility model, the clipper still includes the gyro wheel frame, be provided with two rows of roller trains on the gyro wheel frame, the roller train includes a plurality of edges the gyro wheel that the direction of transportation arranged the setting, the gyro wheel is used for the transportation hard and brittle bar.

As an embodiment of the present invention, the base is provided with an edge on the guide rail that the transportation direction set up, be provided with on the fixture with the spout that the guide rail mutually supported.

Be different from prior art, above-mentioned technical scheme is followed through more than two fixture the direction of transportation of hard and brittle bar sets up, fixture is used for right in vertical direction the hard and brittle bar carries out the centre gripping, and can adjust the position of hard and brittle bar in vertical direction, wherein two are arbitrary fixture mutually supports for the adjustment is two fixture centre gripping the center of hard and brittle bar is located same horizontal plane. So, in the use, fix the one end that hard and brittle bar will cut through first fixture, fix the other end that hard and brittle bar will cut through second fixture, fixture can adjust hard and brittle bar is in the ascending position of vertical direction, makes the center of two cutting planes be located same horizontal plane to guarantee the depth of parallelism of two cutting planes, the transportation, the use of the hard and brittle bar of being convenient for.

Drawings

FIG. 1 is a schematic diagram of a clipper according to an embodiment;

FIG. 2 is a schematic diagram of the base and clamping mechanism according to an embodiment;

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

FIG. 4 is a clamping state diagram of the clamping mechanism according to an embodiment;

FIG. 5 is a left side view of FIG. 4;

FIG. 6 is a right side view of FIG. 4;

FIG. 7 is a front view of an embodiment of the clamping mechanism;

FIG. 8 is an elevation view of an embodiment of the hold down assembly;

FIG. 9 is a structural view of the support assembly according to an embodiment;

FIG. 10 is a front view of an embodiment of the support assembly;

FIG. 11 is a right side view of the support assembly according to the embodiment;

fig. 12 is a schematic structural diagram of a floating support mechanism according to an embodiment.

Description of reference numerals:

1. a base seat is arranged on the base seat,

11. a rack bar is arranged on the upper portion of the rack,

12. the guide rail is provided with a guide rail,

2. the cutting mechanism is used for cutting the workpiece,

3. a clamping mechanism is arranged on the base plate,

31. the pressing component is arranged on the upper portion of the frame,

311. a first drive unit for driving the first motor,

312. the pressing block is arranged on the upper surface of the frame,

313. a displacement sensor for detecting the displacement of the movable body,

32. the support component is used for supporting the support component,

321. a second drive unit for driving the second motor,

322. the pushing block is pushed against the upper surface of the block,

323. the sliding shaft is arranged on the sliding plate,

324. a sliding sleeve is arranged on the upper end of the sliding sleeve,

325. a third drive unit for driving the motor to rotate,

326. the first gear wheel is provided with a first gear wheel,

33. a sliding groove is arranged on the top of the sliding groove,

34. a machine frame, a plurality of guide rails and a plurality of guide rails,

4. a hard and brittle bar material,

5. the floating support mechanism is arranged on the upper portion of the floating support mechanism,

51. a fourth driving unit for driving the motor to rotate,

52. a second gear wheel is arranged on the first gear wheel,

53. a support member for supporting the support member, and a support member,

531. a support part for supporting the support part,

54. a displacement adjusting member for adjusting the displacement of the movable member,

6. a roller carrier.

Detailed Description

To explain technical contents, structural features, and objects and effects of the technical solutions in detail, the following detailed description is given with reference to the accompanying drawings in conjunction with the embodiments.

In the description of the present application, unless explicitly stated or limited otherwise, the terms "first", "second", and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless specified or indicated otherwise; the terms "connected," "fixed," and the like are to be construed broadly and may, for example, be fixedly connected, detachably connected, integrally connected, or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the description of the present application, it should be understood that the terms "upper", "lower", "left", "right", and the like used in the embodiments of the present application are described with reference to the angles shown in the drawings, and should not be construed as limiting the embodiments of the present application. In addition, in this context, it will also be understood that when an element is referred to as being "on" or "under" another element, it can be directly on "or" under "the other element or be indirectly on" or "under" the other element via an intermediate element.

Referring to fig. 1 to 12, the present embodiment relates to a guillotine cutter, which includes a base 1, a cutting mechanism 2, two or more clamping mechanisms 3, a floating support mechanism 5, and a roller frame 6; the base 1 is used for transporting the hard and brittle bar 4, and the base 1 may comprise a transport mechanism in the present embodiment, and the transport mechanism may be used for transporting the hard and brittle bar 4. The cutting mechanism 2 is arranged on the base 1, and the cutting mechanism 2 is used for cutting the hard and brittle bar 4.

Optionally, the guillotine shear further comprises a roller frame 6, wherein two rows of roller groups are arranged on the roller frame 6, each roller group comprises a plurality of rollers arranged along the transportation direction, and the rollers are used for transporting the hard and brittle bars 4. Each roller may be powered to transport the hard and brittle bar 4.

In this embodiment, more than two clamping mechanisms 3 are arranged along the transportation direction of the hard and brittle bar 4, the clamping mechanisms 3 are used for clamping the hard and brittle bar 4 in the vertical direction (the direction indicated by an arrow z in the figure), and the position of the hard and brittle bar 4 in the vertical direction (the direction indicated by the arrow z in the figure) can be adjusted, wherein two arbitrary clamping mechanisms 3 are mutually matched and used for adjusting the centers of the two clamping mechanisms 3 clamping the hard and brittle bar 4 to be located on the same horizontal plane.

In this embodiment, as shown in fig. 2 to 4, at least two clamping mechanisms 3 are required to clamp two ends of the hard and brittle bar 4 to be cut, the first clamping mechanism 3 clamps one end of the hard and brittle bar 4 first to fix the height of the central point of one end of the hard and brittle bar 4, and the other clamping mechanism 3 clamps the other end of the hard and brittle bar 4, and the position of the other end of the hard and brittle bar 4 in the vertical direction (the direction indicated by the arrow z in the figure) is adjusted, so that the height of the central point of the other end of the hard and brittle bar 4 is equal to the height of the central point of one end of the hard and brittle bar 4, and when the two ends of the hard and brittle bar 4 are cut, the parallelism of the two cutting surfaces is ensured, thereby facilitating the transportation and use of the hard and brittle bar 4, ensuring the uniformity of the size of the hard and brittle bar 4, and avoiding waste.

Optionally, the base 1 is provided with a guide rail 12 arranged along the transportation direction, and the clamping mechanism 3 is provided with a sliding groove 33 mutually matched with the guide rail 12. In this way, the gripping mechanism 3 can be relatively moved in the extending direction of the guide rail 12.

Alternatively, as shown in fig. 5 to 7, the clamping mechanism 3 includes a frame 34, and a pressing assembly 31 and a supporting assembly 32 which are arranged on the frame 34, the pressing assembly 31 is arranged above the supporting assembly 32, the supporting assembly 32 is used for supporting the hard and brittle bar stock 4 upwards, the pressing assembly 31 is used for pressing the hard and brittle bar stock 4 downwards, and the pressing assembly 31 and the supporting assembly 32 are mutually matched for adjusting the height of the center of the hard and brittle bar stock 4 in the vertical direction (the direction indicated by the arrow z in the figure).

At this time, the pressing assembly 31 presses the hard and brittle bar 4 downwards, the supporting assembly 32 supports the hard and brittle bar 4 upwards, the height of the hard and brittle bar 4 in the vertical direction (the direction indicated by the arrow z in the figure) can be adjusted, and even if the surface of the hard and brittle bar 4 is defective and uneven, the height of the center (the center of the circle) of the hard and brittle bar 4 in the vertical direction (the direction indicated by the arrow z in the figure) can be adjusted by matching the pressing assembly 31 with the supporting assembly 32.

Optionally, as shown in fig. 8, the pressing assembly 31 includes a first driving unit 311, a pressing block 312 and a displacement sensor 313, the first driving unit 311 is disposed on the frame 34, an output end of the first driving unit 311 is disposed downward, the pressing block 312 is disposed on an output end of the first driving unit 311, the first driving unit 311 is configured to drive the pressing block 312 to press the hard and brittle bar 4 downward,

the displacement sensor 313 is connected with the output end of the first driving unit 311, and the displacement sensor 313 is used for detecting the position information of the pressing block 312 and sending the position information of the pressing block 312 to the control module of the guillotine.

At this time, the output height of the pressing component 31 of the clamping mechanism 3 is fixed, the pressing component 31 of the first clamping mechanism 3 presses downwards, the displacement sensor 313 detects the distance of the pressing block 312 moving downwards, so as to obtain the vertical height of the hard and brittle bar 4 clamped by the first clamping mechanism 3, the vertical height information of the hard and brittle bar 4 clamped by the first clamping mechanism 3 is sent to the second clamping mechanism 3, the second clamping mechanism 3 is adjusted according to actual conditions, the position clamped by the second clamping mechanism 3 corresponds to the position clamped by the first clamping mechanism 3, and therefore the parallelism of two cutting surfaces is ensured when the two ends of the hard and brittle bar 4 are cut.

Optionally, the pressing block 312 is made of a soft material. For example, rubber, nylon, plastic, etc., are not easily crushed by the soft material contacting the upper surface of the hard and brittle bar.

Optionally, as shown in fig. 9 to 11, the support assembly 32 includes a second driving unit 321, a tightening block 322, a sliding sleeve 324, and a sliding shaft 323, the second driving unit 321 is disposed on the frame 34, an output end of the second driving unit 321 is disposed upward, the tightening block 322 is disposed on an output end of the second driving unit 321, and the second driving unit 321 is configured to drive the tightening block 322 to tighten the hard and brittle bar 4 upward.

The sliding sleeve 324 is arranged on the machine frame 34, the sliding shaft 323 is arranged in the sliding sleeve 324, the pushing block 322 is arranged on the sliding shaft 323, the sliding shaft 323 is in transmission connection with the second driving unit 321, and the second driving unit 321 is used for driving the sliding shaft 323 to drive the pushing block 322 to push the hard and brittle bar 4 upwards. The sliding shaft 323 pushes upwards along the sliding sleeve 324, finally drives the pushing block 322 to push upwards, at this time, the pushing block 322 can push the hard and brittle bar 4 upwards, and the height position of the hard and brittle bar 4 is ensured.

Optionally, the puller block 322 is arranged in a V-shaped configuration to hold the bar 4 upwards. The jacking block 322 is arranged to be of a V-shaped structure, supports the hard and brittle bar 4 from the lower part, prevents the hard and brittle bar 4 from running left and right, and ensures the position height of the hard and brittle bar 4 in the vertical direction (the direction indicated by an arrow z in the figure).

Optionally, as shown in fig. 3 and 9, a rack 11 disposed along the transportation direction is disposed on the base 1, the support assembly 32 includes a third driving unit 325 and a first gear 326, the first gear 326 is disposed on an output shaft of the third driving unit 325, and the third driving unit 325 is configured to drive the clamping mechanism 3 to move relatively in the transportation direction through cooperation between the first gear 326 and the rack 11. In this way, the rotation of the first gear 326 can be driven, so that the relative movement of the clamping mechanism 3 on the base 1 can be driven, and the relative movement of the brittle bar 4 in the transport direction can be carried out.

Optionally, as shown in fig. 1 and 12, the guillotine further includes a floating support mechanism 5, and the floating support mechanism 5 is disposed at one side of the cutting mechanism 2 and is used for supporting the hard and brittle bar 4 cut by the cutting mechanism 2. When cutting the hard and brittle bar 4, the section cut from the left side of the hard and brittle bar 4 can be supported and transported away.

Optionally, a rack 11 disposed along the transportation direction is disposed on the base 1, the floating support mechanism 5 includes a fourth driving unit 51 and a second gear 52, the second gear 52 is disposed on an output shaft of the fourth driving unit 51, and the fourth driving unit 51 is configured to drive the floating support mechanism 5 to move relatively in the transportation direction through cooperation between the second gear 52 and the rack 11. In this way, the second gear 52 can be driven to rotate, so that the floating support mechanism 5 is driven to move relatively on the base 1, and the hard and brittle bar 4 can be carried to move relatively in the conveying direction.

Optionally, the floating support mechanism 5 includes more than two support members 53, the more than two support members 53 are arranged in a row along the transportation direction, the support members 53 include two support portions 531 arranged oppositely, and the two support portions 531 arranged oppositely are respectively located at the left and right sides of the hard and brittle bar 4. The two support portions 531 support the hard and brittle bar 4 in a V-shape and prevent movement in the vertical direction (the direction indicated by the arrow z in the figure).

Optionally, the floating support mechanism 5 further includes a displacement adjusting component 54, the displacement adjusting component 54 is disposed on one side of the fourth driving unit 51, and the displacement adjusting component 54 is used for adjusting the distance between the second gear 52 and the rack 11, so as to ensure the meshing between the second gear 52 and the rack 11.

In the using process, the roller frame 6 transports the hard and brittle bar 4 to a specified position, the first clamping mechanism 3 firstly clamps one end of the hard and brittle bar 4 and is used for fixing the height of the central point of one end of the hard and brittle bar 4, the other clamping mechanism 3 clamps the other end of the hard and brittle bar 4, and the position of the other end of the hard and brittle bar 4 in the vertical direction (the direction indicated by an arrow z in the figure) is adjusted through the mutual matching of the pressing component 31 and the supporting component 32, so that the height of the central point of the other end of the hard and brittle bar 4 is equal to the height of the central point of one end of the hard and brittle bar 4; the cutting mechanism 2 cuts downwards to cut one end of the hard and brittle bar 4, the floating supporting mechanism 5 supports one cut section and conveys the cut section away, the clamping mechanism 3 transports inwards, the cutting mechanism 2 cuts the other end of the hard and brittle bar 4, the clamping mechanism 3 puts down two ends of the hard and brittle bar 4, and the next section of the hard and brittle bar 4 is clamped continuously. In other embodiments, other cutting manners are possible, for example, the floating support mechanism 5 cooperates with the clamping mechanism 3 to support two ends of the hard and brittle bar 4, the height data of the clamping mechanism 3 is sent to the floating support mechanism 5, and the floating support mechanism 5 cooperates with two clamping mechanisms 3, wherein the two mechanisms support the hard and brittle bar 4 at will, so that the cutting continuity can be ensured.

Be different from prior art, above-mentioned technical scheme fixes the one end that hard and brittle bar 4 will cut through first fixture 3, fixes the other end that hard and brittle bar 4 will cut through second fixture 3, and fixture 3 can adjust the position of hard and brittle bar 4 on vertical direction (arrow z indicates the direction in the picture), makes the center of two cutting planes be located same horizontal plane to guarantee the depth of parallelism of two cutting planes, be convenient for hard and brittle bar 4's transportation, use.

It should be noted that, although the above embodiments have been described herein, the scope of the present invention is not limited thereby. Therefore, based on the innovative concept of the present invention, the changes and modifications of the embodiments described herein, or the equivalent structure or equivalent process changes made by the contents of the specification and the drawings of the present invention, directly or indirectly apply the above technical solutions to other related technical fields, all included in the scope of the present invention.

Claims (10)

1. A guillotine shear is characterized by comprising a base, a cutting mechanism and more than two clamping mechanisms;

the base is used for transporting the hard and brittle bar stock, the cutting mechanism is arranged on the base, and the cutting mechanism is used for cutting the hard and brittle bar stock;

more than two fixture follows the direction of transportation setting of hard and brittle bar, fixture is used for right in vertical direction the hard and brittle bar carries out the centre gripping, and can adjust hard and brittle bar is in the ascending position of vertical direction, wherein two arbitrary fixture mutually supports, is used for adjusting two fixture centre gripping the center of hard and brittle bar is located same horizontal plane.

2. The guillotine according to claim 1, characterized in that: the clamping mechanism comprises a pressing component and a supporting component, the supporting component is used for upwards supporting the hard and brittle bar, the pressing component is used for downwards pressing the hard and brittle bar, and the pressing component is matched with the supporting component and used for adjusting the height of the center of the hard and brittle bar in the vertical direction.

3. The guillotine according to claim 2, characterized in that: the pressing assembly comprises a first driving unit, a pressing block and a displacement sensor, the first driving unit is used for driving the pressing block to press the hard and brittle bar materials downwards, and the displacement sensor is used for detecting the position information of the pressing block and sending the position information of the pressing block to the control module of the guillotine.

4. The guillotine according to claim 2, characterized in that: the supporting assembly comprises a second driving unit, a jacking block and a sliding shaft, the jacking block is arranged on the sliding shaft, the sliding shaft is in transmission connection with the second driving unit, and the second driving unit is used for driving the sliding shaft to drive the jacking block to upwards jack the hard and brittle bar material.

5. The guillotine according to claim 4, wherein: the base is provided with a rack arranged along the transportation direction, the supporting assembly comprises a third driving unit and a first gear, the first gear is arranged on an output shaft of the third driving unit, and the third driving unit is used for driving the clamping mechanism to move relatively in the transportation direction through the matching of the first gear and the rack.

6. The guillotine according to claim 1, characterized in that: the cutting machine further comprises a floating supporting mechanism, wherein the floating supporting mechanism is arranged on one side of the cutting mechanism and used for supporting the hard and brittle bar stock cut by the cutting mechanism.

7. The guillotine according to claim 6, wherein: the base is provided with a rack arranged along the transport direction, the floating support mechanism comprises a fourth driving unit and a second gear, the second gear is arranged on an output shaft of the fourth driving unit, and the fourth driving unit is used for driving the floating support mechanism to move relatively in the transport direction through the matching of the second gear and the rack.

8. The guillotine according to claim 6, wherein: the floating support mechanism comprises more than two support parts, the more than two support parts are arranged along the conveying direction, the support parts comprise two oppositely arranged support parts, and the two oppositely arranged support parts are respectively positioned at the left side and the right side of the hard and brittle bar stock.

9. The guillotine according to claim 1, characterized in that: the guillotine shear further comprises a roller frame, wherein two rows of roller groups are arranged on the roller frame, each roller group comprises a plurality of rollers arranged along the conveying direction, and the rollers are used for conveying the hard and brittle bars.

10. The guillotine according to claim 1, characterized in that: the base is provided with a guide rail arranged along the conveying direction, and the clamping mechanism is provided with a sliding groove matched with the guide rail.

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