A double-station cutting device for automobile door sill products

Abstract

A kind of automobile door sill product piece roll-in online double-station cutting device, including base, first cutting mechanism and second cutting mechanism are arranged on base, first cutting cylinder drives upper die plate to drive upper moving cutter, bottom edge cutting cutter is arranged in the middle of upper moving cutter, flange edge cutting cutter is arranged on both sides, let slot is arranged between bottom edge cutting cutter and flange edge cutting cutter, the flange edge and bottom edge of product piece are cut by upper moving cutter;Second cutting mechanism is equipped with second upper die plate and hob, hob is connected with second upper die plate by hob mounting block, second cutting cylinder drives second upper die plate to move, and the vertical edge of product piece is cut off.The two cutting mechanisms of the present application cut automobile door sill product piece of open section shape twice, the cutting tool of second cutting station is designed as hob, so that the cutting tool can complete cutting vertical edge in the process of friction rotation, so that the local wear of cutting tool can be reduced, the service life of cutting tool is greatly prolonged, and the cutting quality of product piece is improved.

Description

Technical Field

[0001] This invention relates to a cutting device, and more particularly to an online dual-station cutting device for rolling automotive door sill parts. Background Technology

[0002] Automotive door sills are important safety components in a car body, and they are mostly open-sided designs, such as... Figure 2 As shown, the product part has a bottom edge, two flange edges, and two vertical edges. Typically, the manufacturing process for automotive body door sill parts involves online roll forming followed by online punching. Currently, in the automotive parts manufacturing industry, the cutting process after online roll forming of automotive door sill parts is completed using a single-station punching process. Single-station punching involves setting up a cutting device on the roll forming production line. This device has one punching station, where a moving blade and a stationary blade complete the cutting of the bottom edge, two flange edges, and two vertical edges of the automotive door sill part in one operation. The problems with this traditional cutting device are: for open-section door sill parts with high-strength raw materials, when punching the vertical edges, the small force-bearing area of ​​the cutting blade leads to faster localized wear of the moving blade, reducing its service life. Furthermore, burrs are easily generated on the vertical edges of the product part after punching, affecting product quality. Summary of the Invention

[0003] The purpose of this invention is to provide an online dual-station cutting device for automotive door sill parts that can effectively improve the cutting quality of product parts and extend the life of the cutting blade.

[0004] The problem described in this invention is solved by the following technical solution:

[0005] A dual-station online cutting device for automotive door sill parts is installed at the end of a roll forming production line. It includes a base with a first cutting mechanism and a second cutting mechanism positioned opposite each other on the base. The first cutting mechanism is adjacent to the roll forming production line and includes a first cutting cylinder that drives an upper moving blade via a first upper template. The upper moving blade has a bottom edge punching blade in its center and flange edge punching blades on both sides. A clearance groove is provided between the bottom edge punching blade and the flange edge punching blades. The upper moving blade punches the flange edge and bottom edge of the product part. The second cutting mechanism includes a second cutting cylinder, a second upper template, and roller cutters. The roller cutters are connected to the second upper template via a roller cutter mounting block. The second cutting cylinder drives the second upper template to move, and the two sets of roller cutters, which can rotate freely relative to the roller cutter mounting block, cut the two vertical edges of the product part as they move downwards with the second upper template.

[0006] The aforementioned online dual-station cutting device for rolling automotive door sill parts includes a second cutting station equipped with a second support, a second lower template, a second lower stationary blade fixing seat, and a roller guide block. The lower part of the second support is fixed to the base, the second hydraulic cylinder is fixed to the top of the second support, the second lower template is fixed to the base, two second lower stationary blade fixing seats are symmetrically fixed on both sides of the second lower template, the second lower stationary blade is assembled between the two second lower stationary blade fixing seats, and the roller guide block is located on the upper part of the second lower stationary blade. The two sides of the roller guide block are respectively fixed to the second lower stationary blade fixing seat, and the two corresponding roller guide blocks guide the movement of the roller mounting block and the roller.

[0007] The above-mentioned roller pressing online dual-station cutting device for automotive door sill products has two roller cutter mounting blocks, with an intermediate fixing block between the two roller cutter mounting blocks. An adjusting shim for adjusting the lateral position of the roller cutter mounting blocks is provided between the roller cutter mounting blocks and the intermediate fixing block. The roller cutter mounting blocks, the intermediate fixing block, and the adjusting shim are fixed by bolts.

[0008] The aforementioned online dual-station cutting device for rolling automotive door sill parts uses a roller cutter to cut the vertical edge of the part from the inside, with the vertical center line of the roller cutter offset inward relative to the vertical edge of the part.

[0009] The aforementioned online dual-station cutting device for rolling automotive door sill parts includes a first cutting support, a moving knife guide block, a first lower template, and a first lower stationary knife fixing seat. The lower part of the first cutting support is fixed to the base, and the first cutting cylinder is fixed to the upper part of the first cutting support. The piston rod of the first cylinder is connected to the first upper template. The first lower template is fixed to the base, and two first lower stationary knife fixing seats are symmetrically fixed on both sides of the first lower template. The first lower stationary knife is fixed between two second lower stationary knife fixing seats. The two sides of the moving knife guide block are respectively fixed to the first lower stationary knife fixing seat, and the two corresponding moving knife guide blocks guide the movement of the moving knife.

[0010] The aforementioned dual-station online cutting device for rolling automotive door sill parts has a first lower stationary knife fixing seat equipped with a guide sleeve and a nitrogen spring. The first upper template is connected to a guide post, which slides with the guide sleeve. The nitrogen spring elastically connects to the first upper template. The second lower stationary knife fixing seat is equipped with a guide sleeve and a nitrogen spring. The second upper template is connected to a guide post, which slides with the guide sleeve. The nitrogen spring elastically connects to the second upper template.

[0011] The aforementioned online dual-station cutting device for rolling automotive door sill parts has limit blocks installed on the first and second upper templates respectively.

[0012] The device described in this invention is installed at the end of a roll forming production line. It employs two cutting mechanisms at two stations to perform two cuts on open-section automotive door sill parts. The first cutting mechanism cuts the bottom edge and flange edge of the part, while the second cutting mechanism cuts the vertical edge. Addressing the problems of low tool life and poor cutting quality in traditional punching machines, the second cutting mechanism uses a roller cutter for cutting the vertical edge. This allows the cutter to complete the cutting of the vertical edge through frictional rotation, reducing localized wear on the cutter, significantly extending its service life, and improving the cutting quality of the part. This invention also has the advantages of simple structure, easy installation, and easy maintenance. Attached Figure Description

[0013] The invention will now be further described with reference to the accompanying drawings.

[0014] Figure 1 This is a schematic diagram of the structure of the present invention;

[0015] Figure 2 This is a structural diagram of a car door sill product component;

[0016] Figure 3 yes Figure 2 The left view;

[0017] Figure 4 This is a structural schematic diagram of the first cutting mechanism (the first support and the first hydraulic cylinder are not shown).

[0018] Figure 5 This is a schematic diagram of the structure of the first cutting mechanism before cutting the flange and bottom edge of the product part;

[0019] Figure 6 This is a schematic diagram of the structure after the first cutting mechanism cuts off the flange and bottom edge of the product part;

[0020] Figure 7 This is a schematic diagram of the second cutting mechanism (the second support and the second hydraulic cylinder are not shown).

[0021] Figure 8 This is a schematic diagram of the structure of the second cutting mechanism before it cuts the vertical edge of the product part;

[0022] Figure 9 This is a schematic diagram of the structure after the first cutting mechanism cuts the vertical edge of the product part;

[0023] Figure 10 yes Figure 8 AA section view;

[0024] Figure 11 yes Figure 8 BB cross-sectional view.

[0025] The list of labels in the diagram is as follows: 1. Base, 2. Product part, 2-1. Flange edge, 2-2. Vertical edge, 2-3. Bottom edge, 3. First cutting support, 4. First cutting cylinder, 5. Second cutting support, 6. Second cutting cylinder, 7. First upper template, 8. Upper moving knife, 8-1. Flange edge cutting knife, 8-2. Relief groove, 8-3. Bottom edge cutting knife, 9. Moving knife guide block, 10. First lower stationary knife, 11. First lower template, 12. First lower stationary knife fixing seat, 13. Guide post, 14. Limiting block, 15. Nitrogen spring, 16. Second upper template, 17. Second lower stationary knife fixing seat, 18. Roller installation block, 19. Adjusting shim, 20. Intermediate fixing block, 21. Roller, 22. Roller guide block, 23. Second lower stationary knife, 24. Second lower template. Detailed Implementation

[0026] The automotive door sill products described in this invention are typically as follows: Figure 2 , Figure 3 As shown, product part 2 has a concave cross-section, with two flange edges 2-1 at the top and a bottom edge 2-3 at the bottom. The two vertical edges 2-2 on both sides connect to the flange edges and the bottom edge, respectively. After the product part is roll-formed by the roll forming production line, it is cut to a fixed length online by a cutting device. To solve the problem of severe blade wear and poor cutting quality when cutting product parts in one go on a single cutting device, the dual-station cutting device of this invention has two cutting stations. The first cutting station cuts the flange edges and bottom edge of the product part, and the second cutting station cuts the two vertical edges of the product part.

[0027] See Figure 1 The device of this invention is installed at the end of a roll forming production line. It comprises a base 1, on which a first cutting mechanism and a second cutting mechanism are arranged, one in front of the other. The first cutting mechanism is adjacent to the roll forming production line; that is, the product from the roll forming production line first enters the first cutting mechanism and then enters the second cutting mechanism. The first and second cutting mechanisms are positioned correspondingly. The first cutting mechanism has a first cutting support 3, the lower part of which is fixed to the base, and a first cutting cylinder 4 is fixed to the upper part of the first cutting support. The second cutting mechanism has a second cutting support 5, the lower part of which is fixed to the base, and a second cutting cylinder 6 is fixed to the upper part of the second cutting support.

[0028] See Figure 1 and Figures 4-6The first cutting mechanism includes a first upper template 7, an upper moving blade 8, a moving blade guide block 9, a first lower stationary blade 10, a first lower template 11, and two first lower stationary blade fixing seats 12. A first cutting cylinder is connected to the first upper template, which in turn is connected to the upper moving blade. The first lower template is fixed to a base, and the two first lower stationary blade fixing seats are symmetrically fixed on both sides of the first lower template. The first lower stationary blade is fixed between the two first lower stationary blade fixing seats. The two sides of the moving blade guide block are respectively fixed to the first lower stationary blade fixing seats. The two corresponding moving blade guide blocks guide the movement of the moving blade to ensure the smooth movement of the upper moving blade. A bottom edge punching blade 8-3 is located in the middle of the upper moving blade. The blade of the bottom edge punching blade is beveled. Flange edge punching blades 8-1 are located on both sides of the bottom edge punching blade. A clearance groove 8-2 is provided between the bottom edge punching blade and the flange edge punching blade. The width of the clearance groove is greater than the thickness of the vertical edge of the product part. When the first cutting device is working, the first cutting cylinder drives the upper template, the upper template drives the upper moving knife, the upper moving knife cooperates with the first lower stationary knife to punch the flange edge and bottom edge of the product part. During the punching process, the clearance groove corresponds to the vertical edge of the product part. After the punching is completed, the vertical edge is not cut off.

[0029] See Figure 1 and Figures 7-11The second cutting mechanism includes a second upper template 16, a roller cutter 21, a roller cutter mounting block 18, a second lower stationary cutter fixing seat 17, a second lower stationary cutter 23, a roller cutter guide block 22, and a second lower template 24. Two roller cutter mounting blocks are provided, driven by the second lower template. Each roller cutter mounting block has a set of roller cutters mounted at its lower end, allowing them to rotate freely relative to the mounting blocks. The outer side of each roller cutter cuts one vertical edge of the product part. The second lower template is fixed to a base, and two second lower stationary cutter fixing seats are symmetrically fixed on both sides of the second lower template. The second lower stationary cutter is fixed between two first lower stationary cutter fixing seats. The roller cutter guide block is fixed to the first lower stationary cutter fixing seats on both sides. During the operation of the second cutting mechanism, the second cutting cylinder drives the second upper template to move, which in turn drives the two sets of roller cutters via the roller cutter mounting blocks. As the roller cutters move downwards, they cut off the vertical edges of the product part. The vertical center lines of the two roller cutters are offset inwards relative to the vertical edges of the adjacent product parts to prevent the roller cutters from jamming during the cutting process. An intermediate fixing block 20 is provided between the two roller cutter mounting blocks. An adjusting shim 19 for adjusting the lateral position of the roller cutter mounting blocks is provided between the roller cutter mounting blocks and the intermediate fixing block. The lateral position of the roller cutter can be adjusted by replacing the adjusting shims and the intermediate fixing block with different thicknesses. The roller cutter mounting blocks, the intermediate fixing block, and the adjusting shims are fixed by bolts passing through the three. The intermediate fixing block is bolted to the second upper template. Two roller cutter guide blocks are provided correspondingly at the front and rear. The two roller cutter guide blocks are fixed together, and the two form a limiting groove for limiting the movement of the roller cutter mounting blocks. The second cutting mechanism of this invention uses a roller cutter to cut the vertical edge. During the cutting process, the roller cutter rotates by the downward pressure applied by the hydraulic cylinder and the friction between the product parts. The roller cutter completes the cutting of the vertical edge during the rotation. The roller cutter rolls and rubs against the product parts, which greatly reduces the frictional resistance and avoids local wear of the cutter. Therefore, the service life of the cutter is greatly extended and the cutting quality is significantly improved.

[0030] See Figure 4 and Figure 7 To ensure smooth movement of the upper template, the first lower stationary blade fixing seat is equipped with a guide sleeve and a nitrogen spring 15. The first upper template is connected to a guide post 13, which slides with the guide sleeve. The nitrogen spring elastically connects to the first upper template. The first upper template is also equipped with a limiting block 14 to limit its movement. Similarly, the second lower stationary blade fixing seat is equipped with a guide sleeve and a nitrogen spring 15. The second upper template is connected to a guide post 13, which slides with the guide sleeve. The nitrogen spring elastically connects to the second upper template. The second upper template is equipped with a limiting block 14.

[0031] The working process of this invention is as follows: After the automotive door sill product completes its cross-section forming through a powered roll forming process, it enters the first punching station relying on the transmission power generated by the roll forming production line. Once the roll forming production line has processed a certain length according to the length requirements of the door sill product, it stops working, and the first cutting mechanism activates to cut off the two flange edges and the bottom edge of the product. Then, the roll forming process restarts, pushing the automotive door sill product forward until it enters the second punching station. The distance between the two cutting mechanisms must be equal to the length of the product. The roll forming production line stops working, and the second cutting mechanism activates to perform the second cutting action, completing the cutting of the two vertical edges. In this way, the online roll forming and cutting process for one door sill product is completed. The equipment operates cyclically, completing the processing of batch door sill products.

Claims

1. A kind of automobile door sill product piece roll online double-station cutting device, it is installed at the end of roll production line, it is characterized in that: The first cutting mechanism is adjacent to the rolling production line, and the first cutting mechanism is provided with a first cutting oil cylinder, the first cutting oil cylinder drives an upper die plate to drive an upper moving cutter, a bottom edge punching cutter is arranged in the middle of the upper moving cutter, flange edge punching cutters are arranged on both sides of the bottom edge punching cutter, a clearance groove is arranged between the bottom edge punching cutter and the flange edge punching cutter, and the flange edge and the bottom edge of a product part are punched by the upper moving cutter. The second cutting mechanism is provided with a second support, a second lower die plate, a second lower static cutter fixing seat and a rolling cutter guide block, the lower part of the second support is fixed with the base, the second oil cylinder is fixed on the top of the second support, the second lower die plate is fixed on the base, two second lower static cutter fixing seats are fixed on both sides of the second lower die plate in a symmetrical manner, the second lower static cutter is assembled between the two second lower static cutter fixing seats, the rolling cutter guide block is located on the upper part of the second lower static cutter, and the two sides of the rolling cutter guide block are fixed with the second lower static cutter fixing seat respectively. The upper moving cutter is provided with a bottom edge punching cutter in the middle, the cutting edge of the bottom edge punching cutter is a bevel edge, flange edge punching cutters are arranged on both sides of the bottom edge punching cutter, a clearance groove is arranged between the bottom edge punching cutter and the flange edge punching cutter, and the width of the clearance groove is greater than the thickness of the standing edge of the product part. In the cutting process, the rolling cutter rotates by relying on the downward pressure applied by the oil cylinder and the friction between the product part, and the standing edge is cut by the rolling cutter in the rotating process. The rolling cutter installation block is provided with two blocks, an intermediate fixing block is arranged between the two rolling cutter installation blocks, adjusting washers for adjusting the transverse position of the rolling cutter installation block are arranged between the rolling cutter installation block and the intermediate fixing block, and the rolling cutter installation block, the intermediate fixing block and the adjusting washers are fixed by bolts.

2. The automobile door sill product piece roll pressing online double station cutting device according to claim 1, characterized in that: The rolling cutter cuts the standing edge from the inner side of the standing edge of the product part, and the vertical center line of the rolling cutter is offset inward relative to the standing edge of the product part.

3. The automobile door sill product piece roll pressing on-line double station cutting device according to claim 1, characterized in that: The first cutting mechanism is provided with a first cutting support, a moving cutter guide block, a first lower die plate and a first lower static cutter fixing seat, the lower part of the first cutting support is fixed with the base, the first cutting oil cylinder is fixed on the upper part of the first cutting support, and the first oil cylinder piston rod is connected with the first upper die plate; the first lower die plate is fixed on the base, two first lower static cutter fixing seats are fixed on both sides of the first lower die plate in a symmetrical manner, the first lower static cutter is fixed between the two second lower static cutter fixing seats, the two sides of the moving cutter guide block are fixed with the first lower static cutter fixing seat respectively, and the two moving cutter guide blocks correspond to the movement direction of the moving cutter.

4. The automobile door sill product piece roll pressing on-line double station cutting device according to claim 1, characterized in that: The first lower static tool fixing seat is provided with a guide sleeve and a nitrogen spring, the first upper die plate is connected with a guide column, the guide column is in sliding fit with the guide sleeve, and the nitrogen spring is elastically connected with the first upper die plate; the second lower static tool fixing seat is provided with a guide sleeve and a nitrogen spring, the second upper die plate is connected with a guide column, the guide column is in sliding fit with the guide sleeve, and the nitrogen spring is elastically connected with the second upper die plate.

5. The automobile door sill product piece roll pressing on-line double station cutting device according to claim 1, characterized in that: The first upper die plate and the second upper die plate are respectively provided with limiting blocks.

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