CN219901035U

CN219901035U - Combined cutter structure and plate cutting device

Info

Publication number: CN219901035U
Application number: CN202321362837.1U
Authority: CN
Inventors: 谢海科
Original assignee: Dongguan Huawei Machinery Technology Co ltd; Shenzhen Xinghuosheng Technology Co ltd
Current assignee: Dongguan Huawei Machinery Technology Co ltd; Shenzhen Xinghuosheng Technology Co ltd
Priority date: 2023-05-31
Filing date: 2023-05-31
Publication date: 2023-10-27
Anticipated expiration: 2033-05-31

Abstract

The utility model discloses a combined cutter structure and a plate cutting device, wherein the combined cutter structure comprises a multi-cutter-head structure and a single-cutter-head structure arranged on the side surface of the multi-cutter-head structure; the multi-cutter head structure comprises a lifting driving mechanism, a fixed plate, a cutting driving mechanism and a cutting cutter head; the single cutter head structure comprises a single cutter head driving mechanism, a sliding connecting plate, a rotary driving motor, a cutter head driving mechanism and a cutting blade. According to the combined cutter structure, the multi-cutter head structure drives the fixed plate to do lifting movement through the upgrading driving mechanism, a plurality of blades which are arranged in parallel are arranged on the cutter shaft, and the cutter shaft is driven to rotate through the cutting driving mechanism so as to drive the plurality of blades to synchronously rotate, so that parallel cutting of the plate is realized; the angle of the single tool bit structure to the cutting blade through the rotary driving motor is rotated, the plate is cut at any angle, the long strip-shaped lamp strip can be obtained through high-efficiency cutting through the combined use of the two tool bit structures, and the cutting efficiency of the plate is greatly improved.

Description

Combined cutter structure and plate cutting device

Technical Field

The utility model relates to the technical field of processing machinery, in particular to a combined cutter structure and a plate cutting device.

Background

For the production and processing of aluminum substrates, enterprises need to cut the aluminum substrates into strip-shaped lamp strips, and the lamp beads are embedded into the strip-shaped lamp strips. In the prior art, an automatic cutting device is generally used for cutting the aluminum substrate, however, due to the fact that the type of a cutter head in the existing cutting device is single, the aluminum substrate can be cut in parallel for multiple times, the cutting efficiency is low, and long time is required to be consumed for cutting the aluminum substrate. Thus, the cutting device in the prior art method has a problem of low cutting efficiency when cutting the plate.

Disclosure of Invention

The embodiment of the utility model provides a combined cutter structure and a plate cutting device, and aims to solve the problem of lower cutting efficiency when the cutting device in the prior art cuts a plate.

In a first aspect, an embodiment of the present utility model provides a combined cutter structure, including a multi-cutter structure and a single-cutter structure disposed on a side surface of the multi-cutter structure;

the multi-cutter head structure comprises a lifting driving mechanism, a fixed plate, a cutting driving mechanism and a cutting cutter head;

the cutting driving mechanism and the cutting tool bit are fixedly arranged on the fixed plate, and the lifting driving mechanism is connected with the fixed plate and drives the fixed plate to perform lifting movement;

the cutting tool bit comprises a cutter shaft and a plurality of blades assembled on the cutter shaft; the blades are arranged in parallel, and spacers with equal widths are arranged between the adjacent blades;

the cutting driving mechanism is in transmission connection with the cutter shaft so as to drive the cutter shaft and drive the blade to rotate;

the single-cutter head structure comprises a single-cutter head driving mechanism, a sliding connecting plate, a rotary driving motor, a cutter head driving mechanism and a cutting blade; the outer edges of the blades and the cutting blades are serrated;

the single-cutter head driving mechanism is connected with the sliding connecting plate and drives the sliding connecting plate to vertically slide; the rotary driving motor is fixedly arranged on the sliding connecting plate; the cutter head driving mechanism is fixedly connected with the rotating shaft of the rotary driving motor, and the cutting blade is assembled on the driving shaft of the cutter head driving mechanism.

The combined cutter structure comprises a single cutter head driving mechanism and a cutter head driving mechanism, wherein the single cutter head driving mechanism comprises a bottom plate and a driving cylinder assembled on the bottom plate; the end part of a driving rod of the driving cylinder is connected with the sliding connecting plate.

The combined cutter structure is characterized in that a bottom plate sliding rail is further arranged on the bottom plate, and a sliding groove matched with the bottom plate sliding rail is formed in the sliding connection plate.

The combined cutter structure comprises a cutter head driving mechanism and a cutter head driving mechanism, wherein the cutter head driving mechanism comprises a rotary connecting plate and a cutter head driving motor;

the rotary connecting plate is fixedly connected with a rotating shaft of the rotary driving motor;

the cutter head driving motor is fixedly arranged on one side face of the rotary connecting plate, and a driving shaft of the cutter head driving motor penetrates through the rotary connecting plate and is connected with the cutting blade.

The combined cutter structure is characterized in that the spacer is a circular baffle plate, and the circular baffle plate is sleeved on the cutter shaft.

The combined cutter structure comprises a cutter head and a cutter body, wherein the cutter head also comprises a coaming covered on the outer sides of the cutter shaft and the cutter blade, and two ends of the cutter shaft penetrate through the coaming to be arranged;

a connecting plate is arranged on the outer side wall of the coaming, and a plurality of pressing strips which are arranged in parallel are arranged on the lower side of the connecting plate; each layering is arranged at a gap between adjacent blades, and the gap between the adjacent layering is larger than the thickness of the blades.

The combined cutter structure is characterized in that the connecting plate is fixed on the side wall of the coaming through a vertical driving mechanism, and the vertical driving mechanism drives the connecting plate to vertically move.

The combined cutter structure comprises a vertical driving mechanism and a cutting mechanism, wherein the vertical driving mechanism comprises a guide rail fixedly arranged on the side wall of the coaming and a driver assembled on the guide rail and capable of sliding along the guide rail; the connecting plate is fixedly connected with the driver.

The combined cutter structure is characterized in that rolling bearings are arranged on two opposite side walls of the coaming;

and two ends of the cutter shaft are respectively connected with the two rolling bearings in a rotating way.

In a second aspect, an embodiment of the present utility model further provides a board cutting device, where the board cutting device includes the combined cutter structure according to the first aspect, and the board cutting device includes a fixed connecting rod and a cutting table board;

the fixed connecting rod is fixedly connected with the fixing frame of the lifting driving mechanism and the bottom plate of the single-cutter head driving mechanism at the same time, and the cutting table top is arranged below the combined cutter structure.

The embodiment of the utility model provides a combined cutter structure and a plate cutting device, wherein the combined cutter structure comprises a multi-cutter-head structure and a single-cutter-head structure arranged on the side surface of the multi-cutter-head structure; the multi-cutter head structure comprises a lifting driving mechanism, a fixed plate, a cutting driving mechanism and a cutting cutter head; the single cutter head structure comprises a single cutter head driving mechanism, a sliding connecting plate, a rotary driving motor, a cutter head driving mechanism and a cutting blade. According to the combined cutter structure, the multi-cutter head structure drives the fixed plate to do lifting movement through the upgrading driving mechanism, a plurality of blades which are arranged in parallel are arranged on the cutter shaft, and the cutter shaft is driven to rotate through the cutting driving mechanism so as to drive the plurality of blades to synchronously rotate, so that parallel cutting of the plate is realized; the angle of the single tool bit structure to the cutting blade through the rotary driving motor is rotated, the plate is cut at any angle, the long strip-shaped lamp strip can be obtained through high-efficiency cutting through the combined use of the two tool bit structures, and the cutting efficiency of the plate is greatly improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is an overall structure diagram of a combined cutter structure according to an embodiment of the present utility model;

FIG. 2 is a partial block diagram of a multi-bit structure according to an embodiment of the present utility model;

FIG. 3 is another partial block diagram of a multi-bit structure according to an embodiment of the present utility model;

FIG. 4 is a schematic diagram of a multi-bit structure according to an embodiment of the present utility model;

FIG. 5 is a schematic diagram of a multi-bit structure according to an embodiment of the present utility model;

fig. 6 is an overall structure diagram of a single-bit structure according to an embodiment of the present utility model;

fig. 7 is a partial structure diagram of a single-bit structure according to an embodiment of the present utility model.

Reference numerals: 4. a combined cutter structure; 41. a multi-cutter head structure; 42. a single bit structure; 411. a lifting driving mechanism; 412. a fixing plate; 413. a cutting drive mechanism; 414. a cutter head; 415. a cutter shaft; 416. a blade; 417. a spacer; 418. coaming plate; 43. a connecting plate; 44. pressing strips; 45. a vertical driving mechanism; 451. a guide rail; 452. a driver; 46. a rolling bearing; 461. a fixing frame; 462. a driving motor; 463. a screw rod; 464. a slide rail; 465. a slide block; 47. a fixed connecting rod; 421. a single bit drive mechanism; 422. a sliding connection plate; 423. a rotary drive motor; 424. a cutter head driving mechanism; 425. a cutting blade; 431. a bottom plate; 432. a driving cylinder; 433. a driving rod; 434. a bottom plate slide rail; 441. rotating the connecting plate; 442. the cutter head drives a motor.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be understood that the terms "comprises" and "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

It is also to be understood that the terminology used in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be further understood that the term "and/or" as used in the present specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.

In this embodiment, referring to fig. 1, as shown in the drawings, the embodiment of the present utility model provides a combined cutter structure 4 including a multi-cutter structure 41 and a single-cutter structure 42 disposed on a side surface of the multi-cutter structure 41.

As shown in fig. 2 to 5, the multi-cutter head structure 41 includes a lifting driving mechanism 411, a fixing plate 412, a cutting driving mechanism 413 and a cutting cutter head 414; the cutting driving mechanism 413 and the cutting head 414 are fixedly arranged on the fixing plate 412, and the lifting driving mechanism 411 drives the fixing plate 412 to perform lifting movement; the cutter head 414 includes a cutter shaft 415 and a plurality of blades 416 mounted on the cutter shaft 415; a plurality of blades 416 are arranged in parallel, and spacers 417 with equal width are arranged between adjacent blades 416; the outer edge of the blade 416 is serrated; the cutting driving mechanism 413 is in transmission connection with the cutter shaft 415, so as to drive the cutter shaft 415 and drive the blade 416 to rotate.

As shown in fig. 6 and 7, the single-bit structure 42 includes a single-bit driving mechanism 421, a sliding connection plate 422, a rotary driving motor 423, a bit driving mechanism 424, and a cutting blade 425; the single-bit driving mechanism 421 is connected with the sliding connection plate 422 and drives the sliding connection plate 422 to slide vertically; the rotary driving motor 423 is fixedly arranged on the sliding connection plate 422; the cutter head driving mechanism 424 is fixedly connected with the rotating shaft of the rotary driving motor 423, and the cutting blade 425 is assembled on the driving shaft of the cutter head driving mechanism 424; likewise, the outer edge of the cutting blade 425 is serrated. The single bit driving mechanism 421 is used to drive the sliding connection plate 422 to slide vertically, thereby adjusting the vertical height of the cutting blade 425. The sliding connection plate 422 is used for fixing the rotary driving motor 423, the rotary driving motor 423 drives and drives the cutter head driving mechanism 424 to rotate around the vertical direction, the cutter head driving mechanism 424 can drive the cutting blade 425 to rotate around the vertical direction, so that the cutting angle of the cutting blade 425 is adjusted, the rotary driving motor 423 rotates by 360 degrees, and the cutting of the cutting cutter head 414 along any angle can be realized. The bit drive mechanism 424 is used to drive the cutting blade 425 to rotate about the drive shaft to effect cutting of the sheet material.

In the embodiment of the utility model, the multi-cutter head structure 41 drives the fixed plate 412 to perform lifting movement through the upgrading driving mechanism, a plurality of blades 416 which are arranged in parallel are arranged on the cutter shaft 415, and the cutter shaft 415 is driven to rotate through the cutting driving mechanism 413 so as to drive the plurality of blades 416 to synchronously rotate around the cutter shaft 415, so that parallel cutting of the plate is realized; the single tool bit structure 42 rotates the angle of the cutting blade 425 through the rotary driving motor 423, so that the plate can be cut at any angle, and the long strip-shaped lamp strip can be obtained through the combined use of the two tool bit structures. If the edge of the plate needs to be cut, the single cutter head structure 42 can be used for changing the cutting angle so as to cut the plate meeting the production requirement; when the strip-shaped light strip is required to be cut from the plate, the multi-cutter structure 41 can be used for parallel cutting of the plate, and the multi-cutter structure 41 and the single-cutter structure 42 are flexibly switched and used, so that the plate is cut efficiently.

The blades 416 are arranged in parallel and sleeved on the cutter shaft 415, the blades 416 are fixedly arranged on the cutter shaft 415, and the cutter shaft 415 rotates to drive the blades 416 to synchronously rotate, so that a plurality of cutting seams are formed by one-time cutting, the number of the cutting seams is equal to that of the blades 416, and a strip-shaped lamp strip is formed between the cutting seams. Spacers 417 are disposed between adjacent blades 416, and the spacers 417 are used to maintain a spacing distance between the blades 416, and in particular, the spacers 417 may be disposed to have a width corresponding to a width of the elongated light strip, so as to achieve cutting to obtain the elongated light strip with a fixed width. The width of the spacers 417 may be adjusted according to the width of the lamp strip to be cut, and the width of the spacers 417 may be increased when a wider lamp strip is to be cut; the width of the spacers 417 may be reduced when it is desired to cut a narrower strip of light. The fixing plate 412 is driven to move up and down by the lifting driving mechanism 411, so that the fixing plate 412 moves up and down synchronously to drive the cutting driving mechanism 413 and the cutting tool bit 414 to move up and down, and the blade 416 is close to the plate to cut or far away from the plate. For example, the cutting drive mechanism 413 may be a motor, and an output shaft of the motor is in transmission connection with the cutter shaft 415 through a belt or a chain, so as to drive the cutter shaft 415 to rotate.

In a more specific embodiment, the single-bit driving mechanism 421 includes a bottom plate 431 and a driving cylinder 432 mounted on the bottom plate 431; the driving rod 433 end of the driving cylinder 432 is connected to the slide connection plate 422. Specifically, the bottom plate 431 is further provided with a bottom plate sliding rail 434, and the sliding connection plate 422 is provided with a sliding groove adapted to the bottom plate sliding rail 434. Wherein, the tool bit driving mechanism 424 comprises a rotary connecting plate 411 and a tool bit driving motor 442; the rotary connection plate 411 is fixedly connected with the rotating shaft of the rotary driving motor 423; the cutter head driving motor 442 is fixedly disposed on a side surface of the rotary connection plate 411, and a driving shaft of the cutter head driving motor 442 penetrates through the rotary connection plate 411 and is connected with the cutting blade 425.

In order to drive the sliding connection plate 422 to slide smoothly through the single-bit driving mechanism 421, a bottom plate 431 and a driving cylinder 432 assembled on the bottom plate 431 may be provided, and the end of a driving rod 433 of the driving cylinder 432 is connected to the sliding connection plate 422, so that the driving rod 433 may be driven to slide vertically through the driving cylinder 432, and the sliding connection plate 422 may be driven to slide smoothly through the sliding of the driving rod 433. In order to further improve the smoothness of the sliding connection plate 422, a bottom plate sliding rail 434 may be disposed on the bottom plate 431, and a sliding groove may be disposed on the sliding connection plate 422, and the sliding groove may be clamped on the bottom plate sliding rail 434 and may slide along the bottom plate sliding rail 434.

In order to improve the stability of the cutting blade 425 when rotating along the vertical direction, the cutter head driving mechanism 424 may be provided to be composed of the rotary connecting plate 411 and the cutter head driving motor 442, so that the rotary connecting plate 411 is used for fixing the cutter head driving motor 442, and the rotary driving motor 423 drives the rotary connecting plate 411 to rotate and simultaneously drives the cutter head driving motor 442 and the cutting blade 425 to rotate, thereby enabling the cutting blade 425 to rotate along with the rotary connecting plate 411, and further improving the stability of the cutting blade 425 when rotating along the vertical direction.

In a more specific embodiment, the spacer 417 is a circular spacer, and the circular spacer is sleeved on the cutter shaft 415. Specifically, the cutter head 414 further includes a shroud 418 covering the cutter shaft 415 and the outer side of the blade 416, and two ends of the cutter shaft 415 penetrate through the shroud 418 to be disposed; a connecting plate 43 is arranged on the outer side wall of the coaming 418, and a plurality of pressing strips 44 which are arranged in parallel are arranged on the lower side of the connecting plate 43; each bead 44 is disposed at a gap between adjacent blades 416, and the gap between adjacent beads 44 is greater than the thickness of the blades 416.

Specifically, in order to maintain a certain interval between the blades 416, the spacers 417 may be provided as annular spacers, so that the annular spacers may ensure that the intervals between the blades 416 at two sides are equal in a circumferential range, thereby improving the cutting effect of a plurality of cutter heads arranged in parallel and improving the cutting precision of the plate.

In order to further improve the cutting effect of the combined cutter structure 4 on the plate, a surrounding plate 418 can be arranged to cover the outer sides of the cutter shaft 415 and the blades 416, so that the scraps are prevented from splashing in the process of cutting the plate. Meanwhile, a connecting plate 43 is arranged on the outer side wall of the coaming 418, a plurality of parallel-arranged pressing strips 44 are arranged at the lower end of the connecting plate 43, and the pressing strips 44 are arranged at the gaps of the adjacent blades 416; the pressing bar 44 generates downward pressure due to the action of self elastic force, so that the pressing bar 44 can be used for pressing the plate to be cut, the plate is ensured to be flat in the cutting process, and each blade 416 can accurately cut the plate below the blade, so that the cutting effect of the plate is improved.

In a more specific embodiment, the connection plate 43 is fixed to the side wall of the shroud 418 by a vertical driving mechanism 45, and the vertical driving mechanism 45 drives the connection plate 43 to perform vertical movement. Wherein the vertical driving mechanism 45 includes a guide rail 451 fixedly provided on a side wall of the shroud 418, and a driver 452 mounted on the guide rail 451 so as to be slidable along the guide rail 451; the connection plate 43 is fixedly connected with the driver 452.

To further enhance the use of the bead 44, a vertical driving mechanism 45 may be provided to drive the connection plate 43 to move vertically, and the relative distance between the bead 44 and the blade 416 may be adjusted by the vertical driving mechanism 45. If the vertical height of the bead 44 is adjusted, the distance between the bottom surface of the bead 44 and the lower end of the blade 416 is adjusted, and the distance between the lower end of the blade 416 and the bottom surface of the bead 44 is the cutting depth of the blade 416, so that the cutting depth of the blade 416 to the plate can be adjusted by adjusting the relative distance between the bead 44 and the blade 416, and the cutting effect is further improved. The vertical driving mechanism 45 includes a guide rail 451 provided on the shroud 418, and a driver 452 mounted on the guide rail 451, and the driver 452 is fixedly connected to the connection plate 43.

In a more specific embodiment, rolling bearings 46 are disposed on opposite side walls of the shroud 418; the two ends of the cutter shaft 415 are respectively rotatably connected with the two rolling bearings 46.

The rolling bearings 46 can be arranged on two opposite side walls of the coaming 418, and two ends of the cutter shaft 415 respectively penetrate through the two rolling bearings 46, so that the cutter shaft 415 is in rolling connection with the bearings, the cutter shaft 415 can rotate in the rolling bearings 46, friction resistance in the rotation process of the cutter shaft 415 can be greatly reduced through the arrangement of the rolling bearings 46, and cutting efficiency is further improved.

In a more specific embodiment, the lifting driving mechanism 411 includes a fixing frame 461, a driving motor 462 and a screw 463; the motor is fixedly arranged on the fixing frame 461, and a transmission shaft of the motor is connected with the screw rod 463; the fixing plate 412 is provided with a screw hole adapted to the screw 463. Specifically, the fixing frame 461 is provided with a sliding rail 464, the fixing plate 412 is provided with a sliding block 465 that is adapted to the sliding rail 464 and slides along the sliding rail 464, and the sliding block 465 is fixedly disposed on the fixing plate 412. Wherein, two parallel sliding rails 464 are disposed on the fixing frame 461, the sliding rails 464 are respectively disposed on two sides of the screw rod 463, two groups of sliding blocks 465 are disposed on the fixing plate 412, each group of sliding blocks 465 respectively corresponds to one sliding rail 464, and each group of sliding blocks 465 is composed of at least one sliding block 465.

The lifting driving mechanism 411 comprises a fixing frame 461, a driving motor 462 and a screw 463, wherein the fixing frame 461 is used for fixing the driving motor 462, a transmission shaft of the driving motor 462 is connected with the screw 463, and the driving motor 462 rotates to drive the screw 463 to rotate, so that the fixing plate 412 is driven to slide along the screw 463. A sliding rail 464 may be further disposed on the fixing frame 461, and the sliding block 465 slides along the sliding rail 464, so as to limit the fixing plate 412 to move vertically along the sliding rail 464, thereby improving the stability of the fixing plate 412 driven by the driving motor 462. For example, as shown in fig. 2, in a specific embodiment, two sliding rails 464 may be disposed on two sides of the screw 463, and two sets of sliding blocks 465 are disposed on the two sliding rails 464, where each set of sliding blocks 465 slides along a corresponding sliding rail 464. To enhance the stability of the sliding of the fixing plate 412, each set of the sliders 465 may be formed of a plurality of sliders 465, for example, a combination of upper and lower sliders 465 may be provided to form a set of sliders 465.

The embodiment of the utility model also discloses a plate cutting device, as shown in fig. 5, which comprises the combined cutter structure according to the embodiment, wherein the plate cutting device comprises the combined cutter structure 4 according to the embodiment, and comprises a fixed connecting rod 47 and a cutting table top; the fixed link 47 is fixedly connected with the fixed frame 461 of the lifting driving mechanism 411 and the bottom plate 431 of the single-blade driving mechanism 421, and the cutting table is disposed below the combined cutter structure 4.

The cutting table is used for placing the plate to be cut, and the fixing connecting rod 47 is used for firmly fixing the multi-cutter head structure 41 and the single-cutter head structure 42 on the plate cutting device.

While the utility model has been described with reference to certain preferred embodiments, it will be understood by those skilled in the art that various changes and substitutions of equivalents may be made and equivalents will be apparent to those skilled in the art without departing from the scope of the utility model. Therefore, the protection scope of the utility model is subject to the protection scope of the claims.

Claims

1. The combined cutter structure is characterized by comprising a multi-cutter-head structure and a single-cutter-head structure arranged on the side surface of the multi-cutter-head structure;

2. The combination cutter structure of claim 1, wherein the single-bit drive mechanism comprises a base plate and a drive cylinder mounted on the base plate; the end part of a driving rod of the driving cylinder is connected with the sliding connecting plate.

3. The combined cutter structure according to claim 2, wherein the bottom plate is further provided with a bottom plate sliding rail, and the sliding connection plate is provided with a sliding groove adapted to the bottom plate sliding rail.

4. The combination cutter structure of claim 1, wherein the bit drive mechanism comprises a rotary connection plate and a bit drive motor;

5. The combination cutter structure of claim 1, wherein the spacer is a circular spacer, and the circular spacer is sleeved on the cutter shaft.

6. The combination cutter structure according to claim 1 or 5, wherein the cutter head further comprises a coaming covering the cutter shaft and the outer sides of the blades, and two ends of the cutter shaft penetrate through the coaming;

7. The combination cutter structure of claim 6, wherein the web is secured to the sidewall of the shroud by a vertical drive mechanism that drives the web for vertical movement.

8. The combination cutter structure of claim 7, wherein the vertical drive mechanism comprises a guide rail fixedly provided on a side wall of the coaming, a driver mounted on the guide rail and slidable along the guide rail; the connecting plate is fixedly connected with the driver.

9. The combination cutter structure of claim 6, wherein rolling bearings are provided on opposite side walls of the shroud;

10. A sheet cutting device, characterized in that the sheet cutting device comprises a combined cutter structure according to any one of claims 1-9, the sheet cutting device comprising a fixed connecting rod and a cutting table;