CN214868952U

CN214868952U - Fixing device for metal plate cutting

Info

Publication number: CN214868952U
Application number: CN202121687159.7U
Authority: CN
Inventors: 王继斌; 黄可望
Original assignee: Wuxi Institute of Technology
Current assignee: Jiangsu Yanxi Technology Co ltd
Priority date: 2021-07-23
Filing date: 2021-07-23
Publication date: 2021-11-26
Anticipated expiration: 2031-07-23

Abstract

The utility model discloses a fixing device for cutting metal plates, which comprises a bottom plate, two groups of sliding mechanisms, two groups of supporting mechanisms, four groups of pressing mechanisms and a width adjusting mechanism, wherein the bottom plate is horizontally arranged, the two groups of sliding mechanisms are fixedly connected with the top surface of the bottom plate, and the two groups of sliding mechanisms are parallel to each other; the supporting mechanisms are connected with the sliding mechanisms in a sliding mode, the supporting mechanisms are perpendicular to the sliding mechanisms, the two groups of supporting mechanisms are parallel to each other, and the bottoms of the two ends of each group of supporting mechanisms are respectively connected with the two groups of sliding mechanisms; the pressing mechanisms are fixedly connected with the supporting mechanisms, and each group of supporting mechanisms is correspondingly connected with two groups of pressing mechanisms; the fixed end of the width adjusting mechanism is fixedly connected with the bottom plate, the telescopic end of the width adjusting mechanism is fixedly connected with the supporting mechanism, and the width adjusting mechanism is positioned between the two groups of sliding mechanisms and the two groups of supporting mechanisms. The utility model provides a fixing device is used in panel beating cutting can make the panel beating fixed when making the panel beating cutting, and the position control that can also make the panel beating is comparatively convenient, and then has improved cutting efficiency.

Description

Fixing device for metal plate cutting

Technical Field

The utility model belongs to the technical field of the sheet metal working, concretely relates to fixing device is used in panel beating cutting.

Background

The panel beating has light in weight, intensity is high, electrically conductive, with low costs, characteristics such as large-scale volume production performance is good, has obtained extensive application in fields such as electronic apparatus, communication, automobile industry, medical instrument, for example in computer machine case, cell-phone, the panel beating is essential component part, along with the rapid development of society, people are to the continuous improvement of demand volume of panel beating, in order to satisfy people's needs, people have researched and developed various panel beating processingequipment, wherein just include fixing device for the panel beating cutting.

At present, fixing device for the panel beating cutting among the correlation technique adopts directly to arrange the panel beating in the support body on, and the rethread briquetting is lived the rigidity of panel beating, then cuts, then need lift the briquetting off when the position of adjustment panel beating, and reuse briquetting compresses tightly after moving the target position.

The fixing device for sheet metal cutting in the related art has the following defects: the position control of panel beating is inconvenient, leads to the cutting inconvenient, and then cutting efficiency is lower, can not satisfy people's user demand.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: in order to overcome the not enough of prior art existence, the utility model provides a fixing device is used in panel beating cutting, the technical problem that solve can make the panel beating fixed when how making the panel beating cutting, and the position control that can also make the panel beating is convenient, and then improves cutting efficiency, satisfies people's user demand.

The technical scheme is as follows: in order to achieve the above object, the utility model adopts the following technical scheme:

a fixing device for sheet metal cutting comprises a bottom plate, two groups of sliding mechanisms, two groups of supporting mechanisms, four groups of pressing mechanisms and a width adjusting mechanism, wherein the bottom plate is horizontally arranged, the two groups of sliding mechanisms are fixedly connected with the top surface of the bottom plate, and the two groups of sliding mechanisms are parallel to each other; the supporting mechanism is connected with the sliding mechanism in a sliding mode, the supporting mechanism is perpendicular to the sliding mechanism, the two groups of supporting mechanisms are parallel to each other, and the bottoms of the two ends of each group of supporting mechanism are respectively connected with the two groups of sliding mechanisms; the pressing mechanisms are fixedly connected with the supporting mechanisms, and each group of supporting mechanisms is correspondingly connected with two groups of pressing mechanisms; the fixed end of the width adjusting mechanism is fixedly connected with the bottom plate, the telescopic end of the width adjusting mechanism is fixedly connected with the supporting mechanism, and the width adjusting mechanism is positioned between the two groups of sliding mechanisms and the two groups of supporting mechanisms; the supporting mechanism comprises a supporting frame vertical plate, a supporting frame, at least three groups of connecting rods and at least three groups of rollers, wherein two ends of the supporting frame vertical plate are respectively connected with the tops of the two groups of sliding mechanisms in a sliding manner; the support frame is fixedly connected with one side face of the support frame vertical plate, and the support frame is positioned on one side, close to the width adjusting mechanism, of the support frame vertical plate; one end of the connecting rod is fixedly connected with one side face, close to the width adjusting mechanism, of the vertical plate of the supporting frame, the other end of the connecting rod is fixedly connected with the inner side of the supporting frame, and the connecting rod is parallel to the sliding mechanism; the gyro wheel cover is located on the periphery wall of connecting rod, and with the connecting rod rotates to be connected.

Optionally, the sliding mechanism includes a sliding rail base, a sliding rail and two sets of sliding blocks, and the bottom of the sliding rail base is fixedly connected with the bottom plate; the bottom of the slide rail is fixedly connected with the top of the slide rail base; the bottoms of the two groups of sliding blocks are connected with the top of the sliding rail in a sliding mode, and the tops of the two groups of sliding blocks are connected with the bottom of one end of the two groups of supporting frame vertical plates respectively.

Optionally, the pressing mechanism includes a first connecting plate, a second connecting plate, a hydraulic telescopic rod and a suction cup, a first end of the first connecting plate is fixedly connected with the top of one side of the vertical plate of the support frame close to the width adjusting mechanism, a second end of the first connecting plate is fixedly connected with one end of the second connecting plate, and the second connecting plate is horizontally arranged; the fixed end of the hydraulic telescopic rod is fixedly connected with the bottom of the second connecting plate, and the telescopic end of the hydraulic telescopic rod is fixedly connected with the sucker; the pressing mechanism is positioned above the supporting frame; when the hydraulic telescopic rod is in a working state, the sucker moves towards the direction of the support frame and is used for pressing the sheet metal part placed on the support frame; when the hydraulic telescopic rod is in a non-working state, the sucker is located above the supporting frame and is not in contact with the sheet metal part placed on the supporting frame.

Optionally, the width adjusting mechanism includes a fixed vertical plate and four groups of electric telescopic rods, the bottom of the fixed vertical plate is fixedly connected with the bottom plate, and the fixed vertical plate is parallel to the supporting frame; two groups of electric telescopic rods are respectively connected to two side faces, facing the two groups of supporting mechanisms, of the fixed vertical plate, the fixed ends of the electric telescopic rods are fixedly connected with the fixed vertical plate, and the telescopic ends of the electric telescopic rods are fixedly connected with one side face, facing the fixed vertical plate, of the supporting frame; when the electric telescopic rod is in a working state, the electric telescopic rod drives the supporting mechanism to slide on the sliding mechanism; when the electric telescopic rod is in a non-working state, the supporting mechanism stops sliding on the sliding mechanism.

Optionally, at least six groups of guide pieces are further connected to one side surface of the supporting frame vertical plate close to the width adjusting mechanism, and the middle of each guide piece is flush with the highest point of the corresponding roller.

Optionally, the number of the guide members is six, and the guide members include pulleys.

Optionally, an operation panel is further connected to the bottom plate, and the operation panel is electrically connected to the pressing mechanism and the width adjusting mechanism.

Optionally, a proximity sensor is further connected to the bottom plate, and the proximity sensor is located on one side of the sliding mechanism, which is far away from the width adjusting mechanism.

Optionally, the number of the connecting rods and the number of the rollers corresponding to each group of the supporting mechanism are three.

Has the advantages that: compared with the prior art, the utility model provides a pair of fixing device is used in panel beating cutting can make the panel beating fixed when making the panel beating cutting, and the position control that can also make the panel beating is comparatively convenient, and then has improved cutting efficiency, has satisfied people's user demand.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a top view of a fixing device for sheet metal cutting according to an exemplary embodiment of the present invention;

fig. 2 is a top view of a fixing device for sheet metal cutting according to another exemplary embodiment of the present invention;

fig. 3 is a partial left side view of a supporting mechanism of a fixing device for sheet metal cutting according to an exemplary embodiment of the present invention;

fig. 4 is a sectional view taken along a-a direction in fig. 2 of a fixing device for sheet metal cutting according to an exemplary embodiment of the present invention;

in the figure:

1. a base plate; 2. a sliding mechanism; 3. a support mechanism; 4. a hold-down mechanism; 5. a proximity sensor; 6. a width adjustment mechanism; 7. a guide; 8. an operation panel;

201. a slide rail base; 202. a slide rail; 203. a slider;

301. a support frame vertical plate; 302. a support frame; 303. a connecting rod; 304. a roller;

401. a first connecting plate; 402. a second connecting plate; 403. a hydraulic telescopic rod; 404. a suction cup;

601. fixing the vertical plate; 602. an electric telescopic rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations and positional relationships based on the orientations and positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. In addition, in the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

The present invention will be further described with reference to the accompanying drawings and examples.

As shown in fig. 1, the fixing device for sheet metal cutting includes a bottom plate 1, two sets of sliding mechanisms 2, two sets of supporting mechanisms 3, four sets of pressing mechanisms 4 and a width adjusting mechanism 6, wherein the bottom plate 1 is horizontally arranged, the two sets of sliding mechanisms 2 are fixedly connected with the top surface of the bottom plate 1, and optionally, the connection mode of the sliding mechanisms 2 and the bottom plate 1 includes but is not limited to one of welding, riveting and bolt fixing; the two groups of sliding mechanisms 2 are parallel to each other; the supporting mechanism 3 is connected with the sliding mechanism 2 in a sliding way; the supporting mechanisms 3 are perpendicular to the sliding mechanisms 2, the two groups of supporting mechanisms 3 are parallel to each other, the bottoms of the two ends of each group of supporting mechanisms 3 are respectively connected with the two groups of sliding mechanisms 2, and optionally, the connecting mode of the supporting mechanisms 3 and the sliding mechanisms 2 includes but is not limited to one of welding, riveting and bolt fixing.

The pressing mechanism 4 is fixedly connected with the supporting mechanism 3, and optionally, the connection mode of the pressing mechanism 4 and the supporting mechanism 3 includes but is not limited to one of welding, riveting and bolt fixing; each group of supporting mechanisms 3 is correspondingly connected with two groups of pressing mechanisms 4; the fixed end of the width adjusting mechanism 6 is fixedly connected with the bottom plate 1, and optionally, the connection mode of the fixed end of the width adjusting mechanism 6 and the bottom plate 1 includes but is not limited to one of welding, riveting and bolt fixing; the telescopic end of the width adjusting mechanism 6 is fixedly connected with the supporting mechanism 3, and optionally, the connection mode of the telescopic end of the width adjusting mechanism 6 and the supporting mechanism 3 includes but is not limited to one of welding, riveting and bolt fixing; the width adjusting mechanism 6 is located between the two sets of sliding mechanisms 2 and the two sets of supporting mechanisms 3.

The supporting mechanism 3 comprises a supporting frame vertical plate 301, a supporting frame 302, at least three groups of connecting rods 303 and at least three groups of rollers 304, and two ends of the supporting frame vertical plate 301 are respectively connected with the tops of the two groups of sliding mechanisms 2 in a sliding manner; the supporting frame 302 is fixedly connected with one side surface of the supporting frame vertical plate 301, and optionally, the connecting mode of the supporting frame 302 and one side surface of the supporting frame vertical plate 301 includes but is not limited to one of welding, riveting and bolt fixing; the supporting frame 302 is positioned on one side of the supporting frame vertical plate 301 close to the width adjusting mechanism 6; one end of the connecting rod 303 is fixedly connected with one side surface of the supporting frame vertical plate 301 close to the width adjusting mechanism 6, and optionally, the connection mode of one end of the connecting rod 303 and one side surface of the supporting frame vertical plate 301 close to the width adjusting mechanism 6 includes but is not limited to one of welding, riveting and bolt fixing; the other end of the connecting rod 303 is fixedly connected with the inner side of the supporting frame 302, and optionally, the connecting mode of the other end of the connecting rod 303 and the inner side of the supporting frame 302 includes but is not limited to one of welding, riveting and bolt fixing; the connecting rod 303 is parallel to the sliding mechanism 2; the roller 304 is sleeved on the outer circumferential wall of the connecting rod 303 and is rotatably connected with the connecting rod 303.

In this embodiment, firstly, a metal plate to be cut is placed on the roller 304 of the supporting mechanism 3, and the arrangement of the roller 304 enables the metal plate to be easily adjusted in cutting position; the distance between the two groups of supporting mechanisms 3 is adjusted through the width adjusting mechanism 6 until the metal plate is clamped tightly; then, starting a pressing mechanism 4 above the supporting frame 302 to press and fix the sheet metal; finally, the metal plate cutting can be started. The device has realized when the panel beating is fixed, and the position control that can also make the panel beating is comparatively convenient, stability is high when fixed, and then has improved cutting efficiency, has satisfied people's user demand to fixing device is used in the cutting of whole panel beating's simple structure, and the cost is lower, can the large-scale production application, and is comparatively practical.

As an optional embodiment, as shown in fig. 2, the sliding mechanism 2 includes a sliding rail base 201, a sliding rail 202, and two sets of sliding blocks 203, where the bottom of the sliding rail base 201 is fixedly connected with the bottom plate 1, and optionally, the connection manner of the sliding rail base 201 and the bottom plate 1 includes but is not limited to one of welding, riveting, and bolt fixing; the bottom of the slide rail 202 is fixedly connected with the top of the slide rail base 201, and optionally, the connection mode of the slide rail 202 and the slide rail base 201 includes but is not limited to one of welding, riveting and bolt fixing; the bottoms of the two groups of sliding blocks 203 are connected with the top of the sliding rail 202 in a sliding manner, the tops of the two groups of sliding blocks 203 are respectively connected with the bottoms of one ends of the two groups of supporting frame vertical plates 301, and optionally, the connecting mode of the sliding blocks 203 and the supporting frame vertical plates 301 includes but is not limited to one of welding, riveting and bolt fixing.

In this embodiment, the sliding mechanism 2 drives the supporting mechanism 3 to slide through the sliding connection between the sliding block 203 and the sliding rail 202, so that the flexibility of the sheet metal cutting process is improved.

As an alternative embodiment, as shown in fig. 2 and fig. 3, the pressing mechanism 4 includes a first connecting plate 401, a second connecting plate 402, a hydraulic telescopic rod 403, and a suction cup 404, a first end of the first connecting plate 401 is fixedly connected to a top of one side of the supporting frame upright plate 301 close to the width adjusting mechanism 6, and optionally, the connection manner of the first connecting plate 401 and the supporting frame upright plate 301 includes, but is not limited to, one of welding, riveting, and bolting; the second end of the first connecting plate 401 is fixedly connected with one end of the second connecting plate 402, and optionally, the connection manner of the first connecting plate 401 and the second connecting plate 402 includes but is not limited to one of welding, riveting and bolt fixing; the second connecting plate 402 is horizontally arranged; the fixed end of the hydraulic telescopic rod 403 is fixedly connected with the bottom of the second connecting plate 402, and optionally, the connection mode of the hydraulic telescopic rod 403 and the second connecting plate 402 includes but is not limited to one of welding, riveting and bolt fixing; the telescopic end of the hydraulic telescopic rod 403 is fixedly connected with the suction cup 404, and optionally, the connection mode of the hydraulic telescopic rod 403 and the suction cup 404 includes but is not limited to one of welding, riveting and bolt fixing; the pressing mechanism 4 is positioned above the supporting frame 302; when the hydraulic telescopic rod 403 is in a working state, the suction cup 404 moves towards the direction of the support frame 302 and is used for pressing the sheet metal part placed on the support frame 302; when the hydraulic telescopic rod 403 is in a non-working state, the suction cup 404 is located above the support frame 302 and is not in contact with a sheet metal part placed on the support frame 302.

In this embodiment, this hydraulic telescoping rod 403 is connected with hydraulic cylinder, and this sucking disc 404 is made by rubber, and the setting of this sucking disc 404 has realized the stability when cutting the panel beating, has improved cutting efficiency.

As an optional embodiment, as shown in fig. 2, the width adjusting mechanism 6 includes a fixed vertical plate 601 and four sets of electric telescopic rods 602, the bottom of the fixed vertical plate 601 is fixedly connected to the bottom plate 1, and optionally, the connection manner of the fixed vertical plate 601 and the bottom plate 1 includes but is not limited to one of welding, riveting, and bolt fixing; the fixed vertical plate 601 is parallel to the support frame 302; two side surfaces of the fixed vertical plate 601 facing the two groups of supporting mechanisms 3 are respectively connected with two groups of electric telescopic rods 602, the fixed ends of the electric telescopic rods 602 are fixedly connected with the fixed vertical plate 601, and optionally, the connection mode of the electric telescopic rods 602 and the fixed vertical plate 601 includes but is not limited to one of welding, riveting and bolt fixing; the telescopic end of the electric telescopic rod 602 is fixedly connected with one side of the support frame 302 facing the fixed vertical plate 601, and optionally, the connection mode of the electric telescopic rod 602 and the support frame 302 includes but is not limited to one of welding, riveting and bolt fixing; when the electric telescopic rod 602 is in a working state, the electric telescopic rod 602 drives the supporting mechanism 3 to slide on the sliding mechanism 2; when the electric telescopic rod 602 is in the non-working state, the support mechanism 3 stops sliding on the sliding mechanism 2.

In this embodiment, this electric telescopic handle 602 is connected with driving motor, can realize adjusting the interval between two sets of supporting mechanism 3 through the electric telescopic handle 602 of the fixed riser 601 both sides of drive, presss from both sides tight fixedly to the panel beating, simple structure, and the practicality is strong.

As an alternative embodiment, as shown in fig. 3 and 4, at least six sets of guide members 7 are further connected to a side surface of the supporting frame upright plate 301 close to the width adjusting mechanism 6, and the middle parts of the guide members 7 are flush with the highest point of the rollers 304. As shown in fig. 4, the number of the guide members 7 is six, and the guide members 7 include pulleys.

In this embodiment, the middle part of the guiding member 7 is flush with the highest point of the roller 304, that is, when the metal plate moves, the side surface of the metal plate is in sliding contact with the pulley, so that the side surface of the metal plate is prevented from being in direct contact friction with the side surface of the supporting frame vertical plate 301, and the side surface of the metal plate is prevented from being scratched, and the metal plate is more smoothly moved.

As an alternative embodiment, as shown in fig. 2, an operation panel 8 is further connected to the bottom plate 1, and the operation panel 8 is electrically connected to the pressing mechanism 4 and the width adjusting mechanism 6.

In the present embodiment, the operator can clamp the sheet metal in the width direction and press and fix the sheet metal through the operation panel 8.

As an alternative embodiment, as shown in fig. 2, a proximity sensor 5 is further connected to the bottom plate 1, and the proximity sensor 5 is located on a side of the sliding mechanism 2 away from the width adjusting mechanism 6.

In this embodiment, proximity sensor 5 is a device that has perception object proximity ability, and it utilizes displacement sensor to have the sensitive characteristic to the object that is close and discern being close of object to output corresponding switching signal, through this proximity sensor 5's setting, can make things convenient for the operator to control the extended position of panel beating, thereby makes things convenient for the cutting, has promoted cutting efficiency greatly.

As an alternative embodiment, as shown in fig. 2, each group of support mechanisms 3 has three sets of corresponding connecting rods 303 and rollers 304.

In another example, the number of the connecting rods 303 and the rollers 304 corresponding to each group of supporting mechanisms 3 is six, so that the movement of the sheet metal is smoother. Optionally, the number of the connecting rods 303 and the number of the rollers 304 may be flexibly arranged according to actual working conditions, that is, the weight of the metal plate, and the number of the connecting rods 303 and the number of the rollers 304 are not limited in the present application.

The utility model also provides a fixing device's theory of operation is used in panel beating cutting:

firstly, a metal plate to be cut is placed on the roller 304 of the supporting mechanism 3, the arrangement of the roller 304 enables the metal plate to be easily adjusted in cutting position, meanwhile, the arrangement of the guide piece 7 enables the side face of the metal plate to be in sliding contact with the pulley, the direct contact friction between the side face of the metal plate and the side face of the vertical plate 301 of the supporting frame is prevented, the side face of the metal plate is further scratched, and meanwhile, the metal plate is enabled to be more smooth in moving;

then, acquiring the extending position of the metal plate through a proximity sensor 5, and correspondingly adjusting to a final target position;

then, the electric telescopic rods 602 are started to adjust the distance between the two groups of supporting mechanisms 3 by adjusting the operation panel 8 until the metal plate is clamped tightly;

and finally, starting the pressing mechanism 4 above the support frame 302 to realize pressing and fixing of the sheet metal, and starting sheet metal cutting.

To sum up, the utility model provides a pair of fixing device is used in panel beating cutting can make the panel beating fixed when making the panel beating cutting, and the position control that can also make the panel beating is comparatively convenient, and then has improved cutting efficiency, has satisfied people's user demand to simple structure, the cost is lower, can the large-scale production application, and is comparatively practical.

The above description is only a preferred embodiment of the present invention, and it should be noted that: for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be considered as the protection scope of the present invention.

Claims

1. The fixing device for sheet metal cutting is characterized by comprising a bottom plate (1), two groups of sliding mechanisms (2), two groups of supporting mechanisms (3), four groups of pressing mechanisms (4) and a width adjusting mechanism (6), wherein the bottom plate (1) is horizontally arranged, the two groups of sliding mechanisms (2) are fixedly connected with the top surface of the bottom plate (1), and the two groups of sliding mechanisms (2) are parallel to each other;

the supporting mechanisms (3) are connected with the sliding mechanisms (2) in a sliding mode, the supporting mechanisms (3) are perpendicular to the sliding mechanisms (2), the two groups of supporting mechanisms (3) are parallel to each other, and the bottoms of the two ends of each group of supporting mechanisms (3) are respectively connected with the two groups of sliding mechanisms (2);

the pressing mechanisms (4) are fixedly connected with the supporting mechanisms (3), and each group of supporting mechanisms (3) is correspondingly connected with two groups of pressing mechanisms (4);

the fixed end of the width adjusting mechanism (6) is fixedly connected with the bottom plate (1), the telescopic end of the width adjusting mechanism (6) is fixedly connected with the supporting mechanism (3), and the width adjusting mechanism (6) is positioned between the two groups of sliding mechanisms (2) and the two groups of supporting mechanisms (3);

the supporting mechanism (3) comprises a supporting frame vertical plate (301), a supporting frame (302), at least three groups of connecting rods (303) and at least three groups of rollers (304), and two ends of the supporting frame vertical plate (301) are respectively in sliding connection with the tops of the two groups of sliding mechanisms (2); the supporting frame (302) is fixedly connected with one side face of the supporting frame vertical plate (301), and the supporting frame (302) is positioned on one side, close to the width adjusting mechanism (6), of the supporting frame vertical plate (301); one end of the connecting rod (303) is fixedly connected with one side surface, close to the width adjusting mechanism (6), of the supporting frame vertical plate (301), the other end of the connecting rod is fixedly connected with the inner side of the supporting frame (302), and the connecting rod (303) is parallel to the sliding mechanism (2); the roller (304) is sleeved on the peripheral wall of the connecting rod (303) and is rotatably connected with the connecting rod (303).

2. The fixing device for sheet metal cutting according to claim 1, wherein the sliding mechanism (2) comprises a sliding rail base (201), a sliding rail (202) and two sets of sliding blocks (203), and the bottom of the sliding rail base (201) is fixedly connected with the bottom plate (1);

the bottom of the slide rail (202) is fixedly connected with the top of the slide rail base (201);

the bottoms of the two groups of sliding blocks (203) are in sliding connection with the top of the sliding rail (202), and the tops of the two groups of sliding blocks (203) are respectively connected with the bottom of one end of each of the two groups of supporting frame vertical plates (301).

3. The fixing device for sheet metal cutting according to claim 1, wherein the pressing mechanism (4) comprises a first connecting plate (401), a second connecting plate (402), a hydraulic telescopic rod (403) and a suction cup (404), a first end of the first connecting plate (401) is fixedly connected with the top of one side, close to the width adjusting mechanism (6), of the support frame vertical plate (301), a second end of the first connecting plate (401) is fixedly connected with one end of the second connecting plate (402), and the second connecting plate (402) is horizontally arranged;

the fixed end of the hydraulic telescopic rod (403) is fixedly connected with the bottom of the second connecting plate (402), and the telescopic end of the hydraulic telescopic rod (403) is fixedly connected with the sucker (404);

the pressing mechanism (4) is positioned above the supporting frame (302);

when the hydraulic telescopic rod (403) is in a working state, the sucker (404) moves towards the direction of the support frame (302) and is used for pressing a sheet metal part placed on the support frame (302);

when the hydraulic telescopic rod (403) is in a non-working state, the sucker (404) is positioned above the support frame (302) and is not in contact with a sheet metal part placed on the support frame (302).

4. The fixing device for sheet metal cutting according to claim 1, wherein the width adjusting mechanism (6) comprises a fixed vertical plate (601) and four groups of electric telescopic rods (602), the bottom of the fixed vertical plate (601) is fixedly connected with the bottom plate (1), and the fixed vertical plate (601) is parallel to the supporting frame (302);

two groups of electric telescopic rods (602) are respectively connected to two side faces, facing the two groups of supporting mechanisms (3), of the fixed vertical plate (601), the fixed end of each electric telescopic rod (602) is fixedly connected with the fixed vertical plate (601), and the telescopic end of each electric telescopic rod (602) is fixedly connected with one side face, facing the fixed vertical plate (601), of the support frame (302);

when the electric telescopic rod (602) is in a working state, the electric telescopic rod (602) drives the supporting mechanism (3) to slide on the sliding mechanism (2);

when the electric telescopic rod (602) is in a non-working state, the supporting mechanism (3) stops sliding on the sliding mechanism (2).

5. The fixing device for sheet metal cutting according to claim 1, wherein at least six groups of guide pieces (7) are further connected to one side surface of the supporting frame vertical plate (301) close to the width adjusting mechanism (6), and the middle parts of the guide pieces (7) are flush with the highest point of the roller (304).

6. A fixing device for sheet metal cutting according to claim 5, characterized in that the number of the guides (7) is six, the guides (7) comprising pulleys.

7. The fixing device for sheet metal cutting according to claim 1, wherein an operation panel (8) is further connected to the bottom plate (1), and the operation panel (8) is electrically connected to the pressing mechanism (4) and the width adjusting mechanism (6).

8. The fixing device for sheet metal cutting according to claim 1, wherein a proximity sensor (5) is further connected to the bottom plate (1), and the proximity sensor (5) is located on one side of the sliding mechanism (2) away from the width adjusting mechanism (6).

9. The fixing device for sheet metal cutting as claimed in claim 1, wherein the number of the connecting rods (303) and the rollers (304) corresponding to each group of the supporting mechanisms (3) is three.