Folding and shearing device for machine cover

Abstract

The utility model discloses a folding and shearing device for a machine cover. The folding and shearing device comprises an upper die base, a material pressing plate, a folding and shearing knife block, a lug cutting knife block and a lower die base. The upper die base is locked and attached to an upper sliding block of the oil press, so that the upper die base is arranged above the lower die base in a lifting manner; a machine cover plate material is arranged on the lower die base, and the material pressing plate is installed on the upper die base and can be pressed on the machine cover plate material. The lug cutting knife block is arranged on the lower die base, the knife edge of the lug cutting knife block is in a sharp shape and located below the edge cutting position of a machine cover plate, the shearing and folding knife block is arranged on the upper die base, the knife edge of the shearing and folding knife block is in an arc shape and located above the edge folding position of the machine cover plate, and the shearing and folding knife block is located between the lug cutting knife block and the lower die base. The utility model relates to the technical field of plate machining equipment, and can solve the problem that in the prior art, the edge folding procedure and the edge shearing procedure of a plate need to be carried out separately.

Description

Technical Field

[0001] The utility model relates to the technical field of plate processing equipment, in particular to a folding and shearing device for a machine cover. Background Art

[0002] The processing steps of automobile hood panels include punching, folding and trimming. In the prior art, the hood panel processing usually separates the folding process and the trimming process through folding equipment and trimming equipment respectively, which is inefficient.

[0003] Chinese utility model patent CN217702289U discloses a steel plate folding and shearing machine, including a cutting table, a clamping box, a bending box, and a first hydraulic press. The clamping box is movably mounted on the right side of the upper surface of the cutting table, the bending box is fixedly mounted on the left end of the cutting table, the first hydraulic press is fixedly mounted on the upper surface of the bending box, a mounting frame is fixedly mounted on the output shaft of the first hydraulic press, and a bending roller is mounted on the inner side of the mounting frame on the output shaft of the first hydraulic press. Although the integrated machine can realize the folding and shearing of steel plates, the two processes are still completed successively and separately, and the folding and shearing efficiency of steel plates is low. Therefore, it is necessary to provide a folding and shearing device for machine covers, which can solve the problem that the folding and shearing processes of sheet materials need to be carried out separately in the prior art. Summary of the invention

[0004] The utility model aims to provide a folding and shearing device for a machine cover, which can solve the problem in the prior art that the folding and shearing processes of a sheet material need to be performed separately.

[0005] The utility model is achieved in this way:

[0006] A folding and shearing device for a machine cover comprises an upper die seat, a pressing plate, a shearing and folding knife block, an ear cutting knife block and a lower die seat; the upper die seat is locked on the upper slider of a hydraulic press so that the upper die seat can be lifted and lowered above the lower die seat; the machine cover sheet is placed on the lower die seat, the pressing plate is installed on the upper die seat and can be pressed tightly on the machine cover sheet; the ear cutting knife block is arranged on the lower die seat, the blade of the ear cutting knife block is pointed and is located below the shearing position of the machine cover sheet, the shearing and folding knife block is arranged on the upper die seat, the blade of the shearing and folding knife block is arc-shaped and is located above the folding position of the machine cover sheet, and the shearing and folding knife block is located between the ear cutting knife block and the lower die seat.

[0007] An upper knife block mounting portion is formed on the upper die seat, and the shearing knife block is mounted on the upper knife block mounting portion; a lower knife block mounting portion is formed on the lower die seat and is located below the upper knife block mounting portion, and the ear cutting knife block is arranged on the lower knife block mounting portion and is located below the outer side of the shearing knife block.

[0008] The blade of the ear cutting knife block can abut against the shearing edge of the machine cover sheet and form a folding gap with the lower die seat. The blade of the shearing knife block is matched and inserted into the folding gap, and the folding part of the machine cover sheet is pressed into the folding gap.

[0009] The lower knife block mounting portion is provided with a positioning distance, and the positioning distance is located directly below the machine cover sheet material.

[0010] A vertically arranged spring is arranged between the pressing plate and the upper die seat, so that the pressing plate is movably arranged in the upper die seat through the spring.

[0011] When the spring is at its natural length, the lower end of the pressing plate is lower than the lower end of the shearing and folding knife block.

[0012] The pressing plate is provided with a wear-resistant plate, and the wear-resistant plate is slidably fitted with the vertical guide surface of the upper die seat.

[0013] A travel bolt is locked on the upper die seat, and a through hole is formed on the pressing plate just below the travel bolt, so that the travel bolt passes through the pressing plate through the through hole.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. The utility model is provided with a shearing and folding knife block and an ear cutting knife block, the blade of the ear cutting knife block is against the lower part of the shearing position of the cover sheet, the shearing and folding knife block is located above the folding position of the cover sheet and moves downward synchronously with the upper die base, the shearing and folding knife block presses the folding position of the cover sheet into the folding gap and uses the blade of the ear cutting knife block to shear along the shearing position of the cover sheet, and the shearing and folding processes are completed synchronously, which is beneficial to improve the efficiency of the folding and shearing process and can improve the shape forming quality of the folding and shearing process.

[0016] 2. The utility model is provided with a positioning distance, which can accurately control the setting position of the machine cover sheet on the lower die base, thereby ensuring the position matching between the shearing knife block and the folding position of the machine cover sheet and the ear cutting knife block and the shearing position of the machine cover sheet, further improving the folding and shearing processing quality of the machine cover sheet. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is an end view of the folding and shearing device for the cover of the utility model;

[0018] Figure 2 yes Figure 1 A magnified schematic diagram of center A.

[0019] In the figure, 1 is an upper die base, 101 is an upper knife block mounting part, 2 is a wear-resistant plate, 3 is a press plate, 4 is a spring, 5 is a travel bolt, 6 is a shearing knife block, 7 is an ear cutting knife block, 8 is a positioning distance, 9 is a lower die base, 901 is a lower knife block mounting part, and 10 is a machine cover sheet. DETAILED DESCRIPTION

[0020] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0021] Please see attached Figure 1 A folding and shearing device for a machine cover comprises an upper die base 1, a pressing plate 3, a shearing and folding knife block 6, an ear cutting knife block 7 and a lower die base 9; the upper die base 1 is locked on the upper slider of the hydraulic press, so that the upper die base 1 can be lifted and lowered above the lower die base 9; a machine cover sheet 10 is placed on the lower die base 9, and the pressing plate 3 is installed on the upper die base 1 and can be pressed tightly on the machine cover sheet 10; the ear cutting knife block 7 is arranged on the lower die base 9, the blade of the ear cutting knife block 7 is pointed and is located below the shearing position of the machine cover sheet 10, the shearing and folding knife block 6 is arranged on the upper die base 1, the blade of the shearing and folding knife block 6 is arc-shaped and is located above the folding position of the machine cover sheet 10, and the shearing and folding knife block 6 is located between the ear cutting knife block 7 and the lower die base 9.

[0022] The upper die base 1 is used to control the upward and downward movement of the pressing plate 3 and the shearing and folding knife block 6. When the pressing plate 3 moves downward, the machine cover sheet 10 can be pressed tightly against the lower die base 9 to ensure the stability of the machine cover sheet 10 during the folding and shearing process. When the shearing and folding knife block 6 moves downward, it can press the folding position of the machine cover sheet 10 downward through its arc-shaped blade. In the process of pressing the folding position downward, the machine cover sheet 10 is sheared along the shearing position of the machine cover sheet 10 through the pointed blade of the ear cutting knife block 7, and the folding and shearing operations are completed simultaneously, thereby improving the efficiency of the folding and shearing process and better ensuring the product shape stability at the folding and shearing position.

[0023] Please see attached Figure 1 The upper die base 1 is formed with an upper knife block mounting portion 101, and the shearing knife block 6 is installed on the upper knife block mounting portion 101; the lower die base 9 is formed with a lower knife block mounting portion 901 and is located below the upper knife block mounting portion 101, and the ear cutting knife block 7 is arranged on the lower knife block mounting portion 901 and is located below the outer side of the shearing knife block 6.

[0024] An L-shaped structure is formed between the upper knife block mounting portion 101 and the upper die base 1, which is convenient for installing the shearing and folding knife block 6. The installation position of the upper knife block mounting portion 101 can be adaptively adjusted according to the downward stroke of the upper die base 1 to ensure that when the upper die base 1 completes the downward stroke, the blade at the bottom of the shearing and folding knife block 6 completes the downward pressing and folding processing on the folding position of the machine cover sheet 10.

[0025] An L-shaped structure is formed between the lower knife block mounting portion 901 and the lower die base 9, which is convenient for installing the ear cutting knife block 7. The installation position of the lower knife block mounting portion 901 can be adaptively adjusted according to the size of the ear cutting knife block 7 and the machine cover sheet 10, so that when the machine cover sheet 10 is placed on the lower die base 9, the blade on the top of the ear cutting knife block 7 is set exactly along the cutting position of the machine cover sheet 10, so that when the machine cover sheet 10 is pressed downward, the blade on the top of the ear cutting knife block 7 is used to shear the cutting position.

[0026] Please see attached Figure 2 The blade of the ear cutting knife block 7 can abut against the shearing edge of the machine cover sheet 10 and form a folding gap with the lower die base 9. The blade of the shearing knife block 6 is matched and inserted into the folding gap, and the folding part of the machine cover sheet 10 is pressed into the folding gap.

[0027] The width of the folding gap can be adaptively adjusted according to the blade thickness of the shearing knife block 6 and the thickness of the machine cover sheet 10 to ensure that the folding position of the machine cover sheet 10 can be pressed down to the folding gap when the shearing knife block 6 moves downward with the upper mold base 1, thereby completing the folding process.

[0028] The vertical surface of the blade of the shearing and folding knife block 6 presses the folding part of the cover plate 10 against the vertical plate surface of the lower die base 9, thereby ensuring the folding processing accuracy of the cover plate 10.

[0029] Please see attached Figure 1 The lower knife block mounting portion 901 is provided with a positioning distance 8, and the positioning distance 8 is located directly below the machine cover sheet 10.

[0030] The positioning distance 8 can be determined by tools such as a ruler to accurately locate the installation position of the cover sheet 10, ensuring that the folding position and the shearing position of the cover sheet 10 match the positions of the shearing knife block 6 and the ear cutting knife block 7 respectively.

[0031] Please see attached Figure 1 A vertically arranged spring 4 is provided between the pressing plate 3 and the upper die base 1 , so that the pressing plate 3 is movably arranged in the upper die base 1 through the spring 4 .

[0032] When the pressing plate 3 moves downward with the upper die base 1, it can press on the machine cover sheet 10 and compress the spring 4. The elastic force generated by the compressed spring 4 ensures that the pressing plate 3 can reliably press and position the machine cover sheet 10, avoiding the machine cover sheet 10 from deflecting during the shearing process.

[0033] When the spring 4 is at its natural length, the lower end of the pressing plate 3 is lower than the lower end of the shearing knife block 6, ensuring that the pressing plate 3 contacts the machine cover sheet 10 before the shearing knife block 6, thereby ensuring the fixation of the machine cover sheet 10 before the folding and shearing process.

[0034] Please see attached Figure 1 The pressure plate 3 is provided with a wear-resistant plate 2, and the wear-resistant plate 2 is slidably fitted with the vertical guide surface of the upper die seat 1.

[0035] Due to the compression and extension of the spring 4, there is a relative movement between the pressing plate 3 and the upper die base 1. The wear-resistant plate 2 is arranged to avoid wear of the pressing plate 3 and the upper die base 1. At the same time, the vertical movement trajectory of the pressing plate 3 can be ensured to be stable and controllable, thereby ensuring that the pressing plate 3 can reliably press the cover sheet 10.

[0036] Please see attached Figure 1 A travel bolt 5 is locked on the upper die seat 1, and a through hole is formed on the pressing plate 3 just below the travel bolt 5, so that the travel bolt 5 passes through the pressing plate 3 through the through hole.

[0037] The travel bolt 5 moves downward or upward by rotating the thread. When the upper die base 1 moves downward, the travel bolt 5 moves downward synchronously with the upper die base 1. The travel bolt 5 and the machine cover sheet 10 are used to limit the downward range of the upper die base 1 to prevent the shearing knife block 6 from moving downward excessively and squeezing and damaging the blade of the ear cutting knife block 7.

[0038] Please see attached Figure 1 and attached Figure 2 When processing the hood sheet 10 of the automobile, it is necessary to first cut the edge of the hood sheet 10 along the shearing position, and then perform a folding operation on the cut edge. Therefore, the method for folding and shearing the hood sheet 10 using the utility model and its working principle are:

[0039] Place the machine cover sheet 10 on the lower die base 9, use the positioning distance 8 to measure the edge of the machine cover sheet 10 that needs to be folded and sheared to extend above the lower knife block mounting portion 901, and the cutting edge position of the machine cover sheet 10 is aligned with the blade of the ear cutting knife block 7.

[0040] The upper slide block of the hydraulic press moves downward by utilizing the oil pressure, and the upper slide block drives the upper die base 1 to move downward synchronously, and the upper die base 1 drives the spring 4, the pressing plate 3, the travel bolt 5 and the shearing knife block 6 to move downward synchronously.

[0041] In the process of descending, since the pressing plate 3 is lower than the shearing knife block 6, the pressing plate 3 first contacts the cover sheet 10 and presses the cover sheet 10 against the lower die seat 9. As the upper die seat 1 continues to descend, the pressing plate 3 is limited by the lower die seat 9 and the cover sheet 10 and no longer moves, and the spring 4 is compressed. The elastic force of the spring 4 is used to ensure that the cover sheet 10 is stably pressed against the lower die seat 9 by the pressing plate 3.

[0042] The upper die base 1 continues to descend until the shearing and folding knife block 6 contacts the machine cover sheet 10, and presses the machine cover sheet 10 down into the folding gap. At this time, the shearing position of the machine cover sheet 10 passes through the blade of the ear cutting knife block 7. The blade of the shearing and folding knife block 6 applies downward pressure to the machine cover sheet 10, and the blade of the ear cutting knife block 7 applies an upward supporting force to the machine cover sheet 10, so that the ear cutting knife block 7 shears the machine cover sheet 10.

[0043] As the upper die seat 1 continues to move downward, the edge of the machine cover sheet 10 after trimming is pressed into the folding gap by the shearing and folding knife block 6, and the folding is completed. At this time, the travel bolt 5 moves downward until it contacts the surface of the machine cover sheet 10, the upper die seat 1 and the lower die seat 9 are closed, and the upper slide block no longer moves downward, completing the folding and shearing process.

[0044] Before the cover sheet 10 is sheared and folded, the edge of the cover sheet 10 extends to the outside of the ear cutting knife block 7, as shown in the attached Figure 2 After the cover sheet 10 is sheared and folded, the part of the dotted line located outside the ear cutting knife block 7 is sheared, and the part located above the folding gap is squeezed into the folding gap by the shearing knife block 6 and fits on the vertical plate surface of the lower die seat 9.

[0045] The upper slider moves upward by oil pressure, and the upper die seat 1, the travel bolt 5 and the shearing knife block 6 move upward synchronously with the upper slider. After the spring 4 releases its elastic force to a natural length, the pressing plate 3 moves upward synchronously with the upper die seat 1 and releases the pressing and positioning of the cover sheet 10. The upper slider moves upward to the initial height and then stops. At this time, the shearing knife block 6 rises to the top of the folding gap, and the cover sheet 10 can be unloaded.

[0046] The above are only preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A folding and shearing device for a machine cover, characterized in that: The invention comprises an upper die base (1), a pressing plate (3), a shearing and folding knife block (6), an ear cutting knife block (7) and a lower die base (9); the upper die base (1) is locked on the upper slider of the hydraulic press so that the upper die base (1) can be lifted and lowered above the lower die base (9); a cover plate (10) is placed on the lower die base (9); the pressing plate (3) is installed on the upper die base (1) and can be pressed tightly on the cover plate (10); the ear cutting knife block (7) is arranged on the lower die base (9); the blade of the ear cutting knife block (7) is pointed and located below the shearing position of the cover plate (10); the shearing and folding knife block (6) is arranged on the upper die base (1); the blade of the shearing and folding knife block (6) is arc-shaped and located above the folding position of the cover plate (10); the shearing and folding knife block (6) is located between the ear cutting knife block (7) and the lower die base (9).

2. The folding and shearing device for a machine cover according to claim 1, characterized in that: The upper die base (1) is formed with an upper knife block mounting portion (101), and the shearing knife block (6) is mounted on the upper knife block mounting portion (101); the lower die base (9) is formed with a lower knife block mounting portion (901) and is located below the upper knife block mounting portion (101); the ear cutting knife block (7) is arranged on the lower knife block mounting portion (901) and is located below the outer side of the shearing knife block (6).

3. The folding and shearing device for a machine cover according to claim 1 or 2, characterized in that: The blade of the ear cutting knife block (7) can abut against the shear edge of the machine cover plate (10) and form a folding gap with the lower die base (9); the blade of the shearing knife block (6) is matched and inserted into the folding gap, and the folding part of the machine cover plate (10) is pressed into the folding gap.

4. The folding and shearing device for a machine cover according to claim 2, characterized in that: The lower blade block mounting portion (901) is provided with a positioning distance (8), and the positioning distance (8) is located directly below the machine cover plate (10).

5. The folding and shearing device for a machine cover according to claim 1, characterized in that: A vertically arranged spring (4) is provided between the pressing plate (3) and the upper die seat (1), so that the pressing plate (3) is movably arranged in the upper die seat (1) through the spring (4).

6. The folding and shearing device for a machine cover according to claim 5, characterized in that: When the spring (4) is at its natural length, the lower end of the pressing plate (3) is lower than the lower end of the shearing knife block (6).

7. The folding and shearing device for a machine cover according to claim 1, 5 or 6, characterized in that: The pressing plate (3) is provided with a wear-resistant plate (2), and the wear-resistant plate (2) is slidably fitted with the vertical guide surface of the upper die seat (1).

8. The folding and shearing device for a machine cover according to claim 1 or 5, characterized in that: The upper die seat (1) is locked with a travel bolt (5), and a through hole is formed on the pressing plate (3) just below the travel bolt (5), so that the travel bolt (5) passes through the pressing plate (3) through the through hole.

Images