CN114515861A - Plate cutting device and using method - Google Patents

Abstract

The invention discloses a plate cutting device and a using method thereof, and relates to the technical field of plate cutting. The invention comprises a handle bar, a cutting knife, a sleeve and a bracket; the handle rod is rotatably connected with the top of the bracket through a connecting block arranged at one end of the handle rod; a cutting knife hole penetrating through the sleeve is formed in the middle of the top surface of the sleeve, and pressing plates are arranged at the bottom of the sleeve and positioned on the left side and the right side of the cutting knife hole; the top surface of the sleeve is provided with push plate components at the left side and the right side of the cutting knife hole in a movable manner, the top of each push plate component is connected with the corresponding connecting block, and the bottom of each push plate component extends out of the sleeve and is connected with the corresponding pressure plate; the bottom of the cutter can movably extend into the cutter hole; when the handle lever rotates downwards, the connecting block drives the push plate assembly to push the pressing plate to move downwards so as to fix the plate, and simultaneously drives the cutting knife to move downwards to extend out of the sleeve so as to cut the plate. The plate cutting device and the use method provided by the invention have the advantages of simple structure, convenience in operation, operability by any person, low capital investment and suitability for occasions needing simple cutting of plates.

Description

A kind of plate cutting device and using method

technical field

The invention relates to the technical field of sheet metal cutting, in particular to a sheet metal cutting device and a method for using the same.

Background technique

In the field of metal fabrication and processing, sheet metal is an essential processing material. At present, only thin plates with a thickness of less than 1mm can be manually cut with scissors, and medium-thick plates with a thickness of 1mm and above need to be cut by special equipment such as shears. The equipment needs to be operated by professionals to prevent safety accidents.

SUMMARY OF THE INVENTION

In order to solve the problems that the special plate cutting equipment is bulky, requires a large amount of capital investment, and requires professional operation, the present invention provides a plate cutting device and a method of using it. It is operable with less capital investment, and is suitable for occasions where simple cutting of plates is required.

The invention provides the following technical solutions:

In a first aspect, the present invention provides a plate cutting device, comprising a handle bar, a cutter, a sleeve and a bracket; the handle bar is rotatably connected to the top of the bracket through a connecting block arranged at one end of the handle bar; the sleeve is placed on the top of the bracket. Below the connecting block, and the middle of the top surface of the sleeve is provided with a cutter hole penetrating the sleeve, the bottom of the sleeve is provided with pressure plates on the left and right sides of the cutter hole, and a support part for supporting the sleeve is arranged between the two pressure plates ;The top surface of the sleeve is located on the left and right sides of the cutter hole and is movably installed with a push plate assembly, the top of the push plate assembly is connected with the connecting block, and the bottom extends out of the sleeve to connect with the pressure plate; two symmetrically arranged on the front and rear sides of the sleeve A short cylinder and two chutes arranged under the short cylinder; the bottom of the cutter can move into the cutter hole, and the side of the cutter is provided with two movable pins that can slide in the two chute respectively. It is connected with the short cylinder by a second return spring. Under the action of the second return spring, the top of the cutter always keeps in contact with the connecting block; when the handle rod is rotated downward, the connecting block drives the push plate assembly to push the pressure plate down to Fix the plate, and at the same time drive the cutter to move down to the outside of the extension sleeve to cut the plate.

Preferably, the push plate assembly includes a connecting rod, an upper pressure rod, a first return spring and a lower pressure rod for connecting the pressure plate in sequence from top to bottom. In a natural state, the pressure plate is acted by the first return spring , keep in contact with the bottom surface of the sleeve; the connecting block is provided with two through holes corresponding to the two upper pressure rods respectively, the connecting rods extend out of the sleeve, and can slidably pass through the through holes to be connected with the fixing piece. Through the cooperation between the connecting rod and the connecting block, when the connecting block moves, it drives the upper pressure rod, the first return spring and the lower pressure rod to move, so as to push the pressure plate to move and fix the plate on the work surface to prevent the plate from being cut during the cutting process. Offset phenomenon occurs and affects the cutting effect.

Preferably, the through hole is a waist-shaped hole or a square hole, and the width of the through hole is larger than the outer diameter of the connecting rod, but smaller than the outer diameter of the fixing piece and the upper pressure rod, so as to ensure that the connecting rod can pass through the through hole along its length. direction movement and will not detach from the connection block.

Preferably, the fixing member is a nut, a screw or a pin, which makes the disassembly and assembly between the connecting rod and the connecting block more convenient.

Preferably, the support part is arranged on the side of the bottom surface of the sleeve close to the bracket, and the height of the bottom surface of the support part is lower than the height of the bottom surface of the pressure plate, and there is a gap between the side of the bottom surface of the sleeve away from the bracket and the workbench, which is convenient for placing plate.

Preferably, a rib is installed between the sleeve and the bracket, and the height of the bottom surface of the rib is the same as the height of the bottom surface of the support portion. By setting the rib to connect the sleeve and the bracket, the stability of the plate cutting device can be increased.

Preferably, the connecting block is a U-shaped block, one end of which is provided with a groove is rotatably connected to the bracket through the installation shaft, and the other end is fixedly connected to the handle rod. By setting the U-shaped connecting block, it is not only convenient to install the bracket, but also easy to connect The block cooperates with the upper pressure rod and the cutter.

Preferably, a spring is installed at the angle between the bracket and the connecting block, and the spring is a torsion spring, one end of which extends into the first fixing hole on the connecting block, and the other end extends into the second fixing hole on the bracket. In the hole, a torsion spring is provided to provide support for the handle rod, and after the handle rod is pressed down, the handle rod can be automatically reset, which is convenient for the next cutting work.

Preferably, the top of the cutting knife is set as a spherical surface, and the bottom is set to facilitate cutting the inclined surface of the board. By setting the spherical surface, the top of the cutting knife rotates with the connecting block and can keep in contact with the connecting block.

In a second aspect, the present invention provides a method for using a plate cutting device, comprising the following steps:

S1: Install the plate cutting device on the workbench, fix the bottom of the bracket 7 in the workbench, and ensure that the support portion 34 is in contact with the workbench;

S2: Draw a cutting line on the surface of the plate, after drawing, place the plate in the gap between the worktable and the pressing plate, and align the cutting knife 2 with the cutting line;

S3: Hold the handle rod and press down, push the cutter, the pressure plate assembly and the pressure plate to move downward at the same time through the connecting block; during the pressing process, the pressure plate first contacts the plate, then the first return spring deforms, and further squeezes the pressure plate to fix it plate, and finally the cutter protrudes from the cutter hole of the sleeve to cut the plate;

S4: Loosen the handle rod, the connection block is reset under the action of the spring, the upper pressure rod moves up with the connection block, and the pressure plate and the cutter are reset under the action of the first return spring and the second return spring respectively;

S5: push the sheet along the cutting line;

S6: Repeat steps S3-S5 until all cutting operations are completed.

Beneficial effects of the present invention: by arranging the cutting knife and the push plate assembly in the sleeve, the operator can push the pressing plate and the cutting knife to move down only by turning the handle rod, and the pressing plate exerts pressure on the plate to push the plate It is fixed on the work surface, and at the same time, the cutter extends out of the sleeve to cut the plate, which not only has a simple structure, less capital investment, but also is safe to use, and can be operated by anyone, and can be applied to the occasions where simple cutting of the plate is required.

Description of drawings

Fig. 1 is the structural front view of the present invention;

Fig. 2 is the structural side view of the present invention;

Fig. 3 is the A-A sectional view in Fig. 1 of the present invention;

Fig. 4 is the B-B direction sectional view in Fig. 1 of the present invention;

Fig. 5 is a sectional view taken along the C-C direction in Fig. 1 of the present invention.

Description of reference numbers:

1. Handle rod; 11. Connecting block; 111. Pressing rod hole; 2. Cutting knife; 21. Active pin; 3. Sleeve; 31. Short cylinder; 32. Chute; 33. Pressing plate; 34. Supporting part; 4. Push plate assembly; 41, connecting rod; 42, upper pressure rod; 43, first return spring; 44, lower pressure rod; 5, second return spring; 6, rib plate; 7, bracket; 71, shaft; 8. Spring.

Detailed ways

As shown in Figures 1 and 2, a plate cutting device includes a handle bar 1, a cutting knife 2, a sleeve 3 and a bracket 7; the bottom of the bracket 7 is installed in the workbench and fixed, so that the plate cutting device is installed in the workbench On the table; one end of the handle rod 1 is provided with a connecting block 11, and the connecting block 11 is a U-shaped block, one end of which is provided with a groove is rotatably connected to the top of the bracket 7 through the installation shaft 71, and the other end is fixedly connected to the handle rod 1; Press the handle bar 1 to drive the connecting block 11 to rotate around the rotating shaft 71; a spring 8 is installed at the angle between the bracket 7 and the connecting block 11, and the spring 8 is a torsion spring, one end of which extends into the No. 1 on the connecting block 11. Inside a fixing hole, the other end extends into the second fixing hole on the bracket 7. By setting the torsion spring, the handle bar 1 is provided with a supporting force. Under the action of automatic reset, it is convenient for the next cutting work.

The sleeve 3 is placed under the connecting block 11, and as shown in FIG. 5, the middle of the top surface of the sleeve 3 is provided with a cutting hole penetrating the sleeve 3, and the bottom of the sleeve 3 is provided with pressure plates 33 on the left and right sides of the cutting hole, And a support portion 34 for supporting the sleeve 3 is provided between the two pressing plates 33, the supporting portion 34 is arranged on the side of the bottom surface of the sleeve 3 close to the bracket 7, and the bottom surface height of the supporting portion 34 is lower than the bottom surface height of the pressing plate 33, After the plate cutting device is installed on the worktable, the bottom of the support part 34 is in contact with the worktable, and there is a gap between the side of the bottom surface of the sleeve 3 away from the bracket 7 and the worktable, and the plate must be placed in this gap before cutting. A rib plate 6 is installed between the sleeve 3 and the bracket 7, and the height of the bottom surface of the rib plate 6 is the same as that of the support portion 34, so that the rib plate 6 and the support portion 34 can be in contact with the work surface at the same time, thereby further strengthening the plate cutting device stability.

The top surface of the sleeve 3 is located on the left and right sides of the cutter hole and is movably installed with a push plate assembly 4. As shown in FIG. 3, the push plate assembly 4 includes a connecting rod 41 and an upper pressing rod 42 connected in sequence from top to bottom. , the first return spring 43 and the lower pressure rod 44 for connecting the pressure plate 33; the connecting block 11 is provided with two through holes 111 corresponding to the two upper pressure rods 42 respectively, and the through holes 111 are waist-shaped holes or square holes , the connecting rod 41 extends to the outside of the sleeve 3, and is connected to the fixing piece through the through hole 111. The fixing piece is a nut, a screw or a pin. The width of the through hole 111 is larger than the outer diameter of the connecting rod 41, but smaller than the fixing piece and The outer diameter of the upper pressing rod 42 enables the connecting rod 41 to slide along its length in the through hole 111 without being separated from the connecting block 11; the bottom of the pressing rod 44 extends out of the sleeve 3 and is threadedly connected to the pressing plate 33; naturally In the state, the pressure plate 33 is kept in contact with the bottom surface of the sleeve 3 by the action of the first return spring 43 .

When the operator presses the handle rod 1 downward, the connecting block 11 rotates, driving the connecting rod 41 to slide in the through hole 111 , and simultaneously driving the upper pressing rod 42 , the first return spring 43 , the lower pressing rod 44 and the pressing plate 33 downward together. Move, when the pressing plate 33 is in contact with the plate, continue to apply pressure to deform the first return spring 43 to obtain elastic force, thereby pushing the pressing plate 33 to squeeze the plate downward, so that the plate is fixed on the work surface, preventing the plate from being biased during the cutting process. After lifting the handle bar 1, under the combined action of the handle bar 1 and the first return spring 43, the pressing plate 33 resets and returns to contact with the bottom surface of the sleeve 3.

As shown in FIG. 4 , two short cylinders 31 and two chutes 32 arranged below the short cylinder 31 are symmetrically arranged on the front and rear sides of the sleeve 3; the top of the cutter 2 is set as a spherical surface, and the bottom is set as an inclined surface; The spherical surface makes the top of the cutter 2 rotate with the connection block 11 and can keep in contact with the connection block 11. By setting the inclined surface, the contact area between the cutter 2 and the plate can be reduced, thereby increasing the pressure of the cutter on the plate, which is convenient for Cut sheets.

The bottom of the cutter 2 movably extends into the cutter hole, the side of the cutter 2 is provided with two movable pins 21 that can slide in the two chute 32 respectively, and the second reset between the movable pins 21 and the short cylinder 31 The spring 5 is connected, and under the action of the second return spring 5, the top of the cutting knife 2 is always kept in contact with the connecting block 11; when the handle rod 1 is rotated downward, the connecting block 11 drives the cutting knife 2 to move down and extend out of the sleeve 3. To cut the plate, the second return spring 5 is stretched and deformed to obtain elastic force. After releasing the handle rod 1, the cutter 2 is reset under the action of the second return spring 5.

A method of using the above-mentioned plate cutting device, comprising the following steps:

S1: Install the plate cutting device on the workbench, fix the bottom of the bracket 7 in the workbench, and ensure that the support portion 34 is in contact with the workbench;

S2: Draw a cutting line on the surface of the plate, put the plate in the gap between the worktable and the pressing plate 33 after drawing, and align the cutting knife 2 with the cutting line;

S3: Hold the handle rod 1 and press down, push the cutting knife 2, the pressure plate assembly 4 and the pressure plate 33 to move downward at the same time through the connecting block 11; during the pressing process, the pressure plate 33 first contacts the plate, and then the first return spring 43 is deformed , further squeeze the pressing plate 33 to fix the plate, and finally the cutter 2 extends from the cutter hole of the sleeve 3 to cut the plate;

S4: Release the handle bar 1, the connecting block 11 is reset under the action of the spring 8, the upper pressing rod 42 moves up with the connecting block 11, and the pressing plate 33 and the cutter 2 are respectively on the first return spring 43 and the second return spring Reset under the action of 5;

S5: push the sheet along the cutting line;

S6: Repeat steps S3-S5 until all cutting operations are completed.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still understand the foregoing embodiments. The technical solutions described are modified, or some technical features thereof are equivalently replaced. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims (10)

1. A plate cutting device, characterized in that it comprises a handle bar (1), a cutter (2), a sleeve (3) and a bracket (7); the handle bar (1) is connected by a connection provided at one end thereof The block (11) is rotatably connected with the top of the bracket (7); the sleeve (3) is placed under the connecting block (11), and the middle of the top surface of the sleeve (3) is provided with a cutter hole penetrating the sleeve (3) , the bottom of the sleeve (3) is provided with pressure plates (33) on the left and right sides of the cutter hole, and a support part (34) for supporting the sleeve (3) is arranged between the two pressure plates (33); the sleeve ( 3) The top surface is located on the left and right sides of the cutter hole and is movably installed with a push plate assembly (4), the top of the push plate assembly (4) is connected with the connecting block (11), and the bottom is connected to the pressure plate ( 33) Connection; two short cylinders (31) are symmetrically arranged on the front and rear sides of the sleeve (3) and two chutes (32) arranged under the short cylinder (31); the bottom of the cutting knife (2) is movably extended. into the cutter hole, and the side of the cutter (2) is provided with two movable pins (21) that can slide in the two chutes (32) respectively, and the movable pins (21) and the short cylinder (31) pass through The second return spring (5) is connected, and under the action of the second return spring (5), the top of the cutting knife (2) always keeps in contact with the connecting block (11); when the handle rod (1) rotates downward, the connecting block (11) Drive the push plate assembly (4) to push the pressure plate (33) down to fix the plate, and at the same time drive the cutter (2) to move down to the outside of the sleeve (3) to cut the plate. 2 . The plate cutting device according to claim 1 , wherein the push plate assembly ( 4 ) comprises a connecting rod ( 41 ), an upper pressing rod ( 42 ), a first reset rod ( 41 ) connected in sequence from top to bottom The spring (43) and the lower pressure rod (44) for connecting the pressure plate (33); in the natural state, the pressure plate (33) is kept in contact with the bottom surface of the sleeve (3) under the action of the first return spring (43); The connecting block (11) is provided with two through holes (111) corresponding to the two upper pressure rods (42) respectively, and the connecting rods (41) extend to the outside of the sleeve (3), and can slidably pass through the through holes (111). The hole (111) is connected with the fixing piece. 3 . The plate cutting device according to claim 2 , wherein the through hole ( 111 ) is a waist-shaped hole or a square hole, and the width of the through hole ( 111 ) is larger than the outer diameter of the connecting rod ( 41 ), but It is smaller than the outer diameter of the fixing piece and the upper pressure rod (42). 4. The plate cutting device according to claim 2 or 3, wherein the fixing member is a nut, a screw or a pin. 5. The plate cutting device according to any one of claims 1-3, characterized in that: the support portion (34) is arranged on the side of the bottom surface of the sleeve (3) close to the bracket (7), and the support portion ( The height of the bottom surface of 34) is lower than the height of the bottom surface of the pressing plate (33). 6. The plate cutting device according to any one of claims 1-3, wherein a rib (6) is installed between the sleeve (3) and the bracket (7), and the rib (6) is The height of the bottom surface is the same as the height of the bottom surface of the support part (34). 7. The plate cutting device according to any one of claims 1-3, characterized in that: the connecting block (11) is a U-shaped block, and one end of the connecting block (11) is provided with a groove through the installation of a rotating shaft (71) and a bracket ( 7) Rotate the connection, and the other end is fixedly connected with the handle rod (1). 8 . The plate cutting device according to claim 7 , wherein a spring ( 8 ) is installed at the included angle between the bracket ( 7 ) and the connecting block ( 11 ), and the spring ( 8 ) is a torsion spring, 9 . One end extends into the first fixing hole on the connecting block (11), and the other end extends into the second fixing hole on the bracket (7). 9 . The plate cutting device according to claim 1 , wherein the top of the cutter ( 2 ) is set as a spherical surface, and the bottom is set as an inclined surface for cutting the plate. 10 . 10. A method for using a plate cutting device according to claim 5, comprising the steps of: S1: Install the plate cutting device on the workbench, fix the bottom of the bracket 7 in the workbench, and ensure that the support portion 34 is in contact with the workbench; S2: Draw a cutting line on the surface of the plate, put the plate in the gap between the worktable and the pressing plate 33 after drawing, and align the cutting knife 2 with the cutting line; S3: Hold the handle rod 1 and press down, push the cutting knife 2, the pressure plate assembly 4 and the pressure plate 33 to move downward at the same time through the connecting block 11; during the pressing process, the pressure plate 33 first contacts the plate, and then the first return spring 43 is deformed , further squeeze the pressing plate 33 to fix the plate, and finally the cutter 2 extends from the cutter hole of the sleeve 3 to cut the plate; S4: Release the handle bar 1, the connecting block 11 is reset under the action of the spring 8, the upper pressing rod 42 moves up with the connecting block 11, and the pressing plate 33 and the cutter 2 are respectively on the first return spring 43 and the second return spring Reset under the action of 5; S5: push the sheet along the cutting line; S6: Repeat steps S3-S5 until all cutting operations are completed.

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