A die-cutting die and die-cutting process for a side panel

Abstract

The present application relates to side wall plate stamping technical field, disclose a kind of side wall plate die-cutting die and die-cutting process, the mould includes including upper die, lower die, first knife group, second knife group, elastic material pressing assembly and waste knife group;The first knife group is fixed on the upper die, its blade edge is downward, the first knife group includes the fixed tool block, fixed tool rest and movable tool block assembly, and the fixed tool block is equipped with blade edge;The second knife group is fixed on the lower die, its blade edge is upward, and it is parallelly arranged with the blade edge of the first knife group and is staggered;The elastic material pressing assembly is located on the upper die, and it is arranged around the first knife group, and it is located directly above the second knife group.The beneficial effects of the present application are: without designing floating separation cutter, avoid the deformation of the separation part between the sheet material, while the material can be pressed when waste is sheared, reduce the iron filings generated when waste is segmented to press the surface of side wall plate, while reducing the downtime wiping time, facilitate discharging, improve production efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of side panel stamping, and in particular to a die-cutting die and die-cutting process for side panel. Background Art

[0002] At present, the overall side panel of the body in white has large dimensions, complex shapes, large depth differences, and is difficult to form. There are certain requirements for the shape of the blank before drawing. Therefore, before drawing the side panel, it is usually necessary to design a die-cutting mold to trim the blank into a specified shape to facilitate drawing.

[0003] In the existing stamping process, a floating separation cutter is generally used to shear along the separation line of the two sheets to separate the two sheets. Due to the height difference between the floating separation cutter and other knife blocks, the separation part between the sheets is prone to deformation, which makes the pressing surface of the subsequent drawing die easily damaged, increases the frequency and cost of tooling maintenance, and reduces production efficiency. In addition, when stamping the side panels, in order to facilitate the discharge of waste, the waste needs to be sheared and segmented. Due to the large number of shearing segments, the waste knife is close to the stamping knife group of the side panels. When shearing the waste, it is difficult to design a corresponding pressing structure, resulting in uneven force on the waste during shearing, and a large amount of iron chips are easily splashed onto the surface of the side panels, causing damage to the surface of the side panels. It is necessary to stop the machine multiple times to wipe the iron chips, which results in a long downtime and low production efficiency. Secondly, the cut of the waste segment is prone to deformation, resulting in greater friction when the waste slides out, and it is easy to get stuck when discharging, affecting production efficiency. Summary of the Invention

[0004] The purpose of the present invention is to provide a die-cutting die and die-cutting process for side panels, aiming to solve the technical problems in the prior art that the use of floating separation cutters easily leads to deformation of the separation parts between the sheets, the design of a pressing structure for waste shearing is difficult, and the production efficiency is low.

[0005] In order to achieve the above-mentioned object, the present invention provides a die-cutting die for side panels, comprising an upper die, a lower die, a first knife group, a second knife group, an elastic material pressing component and a waste knife group;

[0006] The first blade assembly is fixed on the upper die with its cutting edge facing downward, and the first blade assembly includes a fixed blade block, a fixed blade holder, and a movable blade block assembly, each of which has a cutting edge on its side wall. The contour line formed by the cutting edges of the fixed blade block, the fixed blade holder, and the movable blade block assembly are connected in sequence and coincide with the contour line of the side panel.

[0007] The second knife group is fixed on the lower die, with its cutting edge facing upward and staggered and parallel to the cutting edge of the first knife group. The first knife group and the second knife group cooperate to punch the sheet material to form the side panels and waste material.

[0008] An elastic material pressing component is provided on at least one side of the first knife group, the elastic material pressing component is located on the upper die, and the elastic material pressing component is located directly above the second knife group, and is used for pressing the sheet material during stamping;

[0009] The waste knife group includes a waste knife fixed on the lower mold, and the waste knife is located directly below the movable knife block assembly. The waste knife and the fixed knife holder cooperate to shear and segment the waste. The movable knife block assembly is used to press the material when the waste knife and the fixed knife holder cooperate to shear and segment the waste.

[0010] Furthermore, a through slot is provided on the fixed knife holder, one end of the through slot passes through the side wall of the fixed knife holder to form an opening, a cutting edge is provided on the bottom side of the fixed knife holder near the opening, the movable knife block assembly includes a gas spring connected to the upper mold at one end, the other end of the gas spring is connected to a movable knife block, the movable knife block is passed through the through slot, and a cutting edge is provided on the bottom side wall near the opening.

[0011] Furthermore, a step surface is provided in the through slot, a side wall of the movable blade block is provided with a limiting boss for limiting the position with the step surface, and a side wall of the movable blade block is provided with a guide plate for slidingly guiding the through slot.

[0012] Furthermore, the fixed blade block or the fixed blade holder is provided with an elastic ejector pin fixed to the upper die.

[0013] Furthermore, the elastic pressing assembly includes a connecting plate for fixing to the upper mold, and elastic pressing blocks are evenly distributed below the connecting plate.

[0014] Furthermore, the lower die is provided with a mounting seat for mounting the waste cutter, and the width of the mounting seat is smaller than the width of the waste cutter.

[0015] Furthermore, the lower die is further provided with a guide roller assembly and a positioning assembly, the guide roller assemblies are arranged in a row along the length direction of the lower die; the positioning assemblies are distributed on both sides of the lower die.

[0016] Furthermore, a clamping boss is provided on the mounting seat, and a clamping portion mounted on the clamping boss is provided at the bottom of the waste cutter.

[0017] Furthermore, a material receiving cavity is provided on the lower mold, and the bottom surface of the material receiving cavity is an inclined surface extending downwardly toward the outer side of the lower mold. A waste recycling component is provided in the material receiving cavity, and the waste recycling component includes a material receiving baffle with a bottom surface extending downwardly toward its outer side, and universal ball bearings are distributed on the material receiving baffle.

[0018] The present invention also provides a die-cutting process for side panels, which uses any of the above-mentioned die-cutting molds and includes the following steps:

[0019] S1. A sheet material including a first sheet material and a second sheet material is moved from a feed port of a die-cutting die along a feed direction. The first sheet material is moved to a first station and punched along punching lines at both ends of a separation line to form two punching holes.

[0020] S2. The first sheet material moves to the second station, and the second sheet material moves to the first station. The first sheet material is punched for the second time along the contour line, door opening line, and separation line on the first sheet material, and the front side contour of the first sheet material and the sheet material on the discharge port side are separated. At the same time, the punching of the two punching holes on the second sheet material is completed.

[0021] Compared with the prior art, the die-cutting mold and die-cutting process of the side panel in the embodiment of the present invention have the following beneficial effects: by setting the first knife group, the second knife group and the waste knife group, the separation between the two sheets can be completed without setting the floating separation cutter, the upper end surfaces of the cutting edges of the second knife group are all in the same horizontal plane, without height difference, and the separated parts of the sheets are not easy to deform; in addition, the first knife group includes a fixed knife block, a fixed knife holder and a movable knife block assembly, and the movable knife block assembly can not only shear the contour of the side panel, but also press the waste when shearing, thereby reducing the iron filings generated when the waste is segmented to crush the surface of the side panel, and at the same time reducing the downtime for wiping. Secondly, it avoids deformation at the incision of the waste segment, facilitates material discharge, and improves production efficiency; the die-cutting process provided by the present invention can avoid deformation of the separated parts between the sheets. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Schematic diagram of the structure of the die-cutting die according to an embodiment of the present invention;

[0023] Figure 2 2 is a schematic structural diagram of the first blade assembly of the die-cutting die according to an embodiment of the present invention;

[0024] Figure 3 2 is a schematic structural diagram of the lower die of the die-cutting die according to an embodiment of the present invention;

[0025] Figure 4 Schematic diagram of the structure of the waste knife of the die-cutting die according to an embodiment of the present invention;

[0026] Figure 5 2 is a schematic structural diagram of a movable blade assembly of a die-cutting die according to an embodiment of the present invention;

[0027] Figure 6 is a cross-sectional view of a movable blade block assembly of a die-cutting die according to an embodiment of the present invention;

[0028] Figure 71 is a schematic structural diagram of an elastic pressing assembly of a die-cutting die according to an embodiment of the present invention;

[0029] Figure 8 Schematic diagram of the structure of the waste recycling assembly of the die-cutting die according to an embodiment of the present invention;

[0030] Figure 9 is a schematic diagram of a first sheet material located at a first workstation according to an embodiment of the present invention;

[0031] Figure 10 is a schematic diagram of a first sheet material located at a second workstation according to an embodiment of the present invention;

[0032] Figure 11 This is a schematic diagram of the second sheet material located at the second workstation according to an embodiment of the present invention.

[0033] In the figure, 1. upper die; 2. lower die; 21. material receiving cavity; 22. mounting seat; 221. clamping boss; 3. guide roller assembly; 4. positioning assembly; 5. first knife group; 51. fixed knife block; 52. fixed knife holder, 521. through groove; 5211. step surface; 53. movable knife block assembly; 531. gas spring; 532. movable knife block; 5321. limiting boss; 533. guide plate; 54. elastic ejector pin; 6. second knife group; 7. elastic pressing assembly; 71. connecting plate; 72. elastic pressing block; 8. waste knife group; 81. waste knife; 9. waste recycling assembly; 91. material receiving baffle, 92. universal ball, a-cutting edge; b1-first sheet; b2-second sheet; b3-third sheet; c-contour line, d-separation line; e-punching line, f-door opening line. DETAILED DESCRIPTION

[0034] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0035] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "inside", "outside", etc. used in the present invention to indicate the orientation or positional relationship are based on the positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the devices and elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0036] In describing the present invention, it should be understood that the terms "first," "second," etc., are used to describe various types of information, but such information should not be limited to these terms. These terms are merely used to distinguish information of the same type from one another. For example, "first" information could also be referred to as "second" information, and similarly, "second" information could also be referred to as "first" information without departing from the scope of the present invention.

[0037] See Figures 1 to 8 The die-cutting die for side panels of a preferred embodiment of the present invention is generally connected to a sheet material feeding mechanism for automatic loading and blanking. The sheet material feeding mechanism provides driving force so that the sheet material can be translated to a designated station on the die-cutting die for punching and blanking. The die-cutting die includes an upper die 1, a lower die 2, a first knife group 5, a second knife group 6, an elastic material pressing assembly 7, and a waste knife group 8. The upper die 1 and the lower die 2 are connected by a guide column. In order to guide the sheet material feeding, a guide roller assembly 3 is provided on the lower die 2. Figure 2 As shown, the guide roller assemblies 3 are arranged in rows along the length direction of the lower mold 2.

[0038] In order to limit the rotation or movement of the plate in the horizontal direction, a positioning component 4 is also provided on the lower mold 2. The positioning component 4 is distributed on both sides of the lower mold 2. Specifically, the positioning component 4 includes a sliding block, which can be translated left and right. The output end of the sliding block is provided with an L-shaped connecting plate. The side wall of the L-shaped connecting plate is fixed with a sheet metal part parallel to the length direction of the lower mold 2, and guide rollers are evenly distributed on the sheet metal part.

[0039] The first knife group 5 is fixed on the upper mold 1, with its cutting edge facing downward, and can move synchronously with the upper mold 1. The first knife group 5 includes a fixed knife block 51, a fixed knife holder 52 and a movable knife block assembly 53, all of which have cutting edges on the side walls. The contour line formed by the cutting edges of the fixed knife block 51, the fixed knife holder 52 and the movable knife block assembly 53 are connected in sequence and coincides with the contour line of the side panel.

[0040] The second knife group 6 is fixed on the lower die 2, with its cutting edge facing upward, and is arranged in parallel with the cutting edge of the first knife group 5. When blanking, the first knife group 5 and the second knife group 6 cooperate to stamp the sheet material to form the side panels and waste.

[0041] In order to prevent the sheet from moving during the blanking process, the sheet needs to be pre-pressed. An elastic pressing component 7 is provided on at least one side of the first knife group 5. The elastic pressing component 7 is located on the upper mold 1, and the elastic pressing component 7 is located directly above the second knife group 6, which is used to press the sheet during stamping.

[0042] The waste knife group 8 includes a waste knife 81 fixed on the lower mold 2. The waste knife 81 is located directly below the movable knife block assembly 53. The waste knife 81 and the fixed knife holder 52 cooperate to shear and segment the waste. The movable knife block assembly 53 is used to press the material when the waste knife 81 and the fixed knife holder 52 cooperate to shear and segment the waste.

[0043] In order to facilitate the discharge of waste materials, a material receiving cavity 21 is opened on the lower mold 2. The bottom surface of the material receiving cavity 21 is an inclined surface extending downwardly toward the outer side of the lower mold. The waste recovery component 9 includes a material receiving baffle 91 with a bottom surface extending downwardly toward its outer side. Universal balls 92 are evenly distributed on the material receiving baffle 91.

[0044] Further, if Figure 5 As shown, in order to enable the movable knife block assembly 53 to not only shear the contour of the side panel, but also press the waste material when shearing, in this embodiment, a through slot 521 is provided on the fixed knife holder 52, and one end of the through slot 521 passes through the side wall of the fixed knife holder 52 to form an opening, and a cutting edge is provided on the side of the bottom of the fixed knife holder 52 near the opening, and the movable knife block assembly 53 includes a gas spring 531 connected to the upper mold 1 at one end, and the other end of the gas spring 531 is connected to the movable knife block 532, and the movable knife block 532 is passed through the through slot 521, and a cutting edge a is provided on the bottom side wall near the opening for shearing the contour of the side panel.

[0045] Furthermore, in order to limit the vertical position of the movable knife block 532, a step surface 5211 is provided in the through groove 521, and the side wall of the movable knife block 532 is provided with a limiting boss 5321 for limiting the step surface 5211; at the same time, in order to ensure the cutting accuracy of the movable knife block 532, a guide plate 533 is provided on the side wall of the movable knife block 532 for sliding guidance with the through groove 521.

[0046] In order to facilitate the waste to fall into the receiving cavity 21, it is necessary to push the sheared and segmented waste. Figure 4 As shown, an elastic ejection pin 54 for fixing to the upper mold 1 is provided on the fixed knife block 51 or the fixed knife holder 52. In this embodiment, in order to improve the ejection effect of the elastic ejection pin 54 and increase its ejection stroke, the ejection stroke of the elastic ejection pin 54 is 25mm-35mm.

[0047] The elastic pressing assembly 7 includes a connecting plate 71 for fixing to the upper mold 1 , and elastic pressing blocks 72 are evenly distributed below the connecting plate 71 , and the elastic pressing blocks 72 can be deformed.

[0048] In order to facilitate the fixing of the waste knife 81, a mounting seat 22 for mounting the waste knife 81 is provided on the lower die 2. Since the waste is cut into the receiving cavity 21 by the back of the waste knife 81 after shearing, in order to avoid the width of the mounting seat 22 affecting the sliding of the material, in this embodiment, the width of the mounting seat 22 is smaller than the width of the waste knife 81; further, as Figure 4 As shown, in order to increase the sliding space of the waste material, the bottom of the mounting seat 22 is set at an angle; further, in order to facilitate the positioning of the waste knife 81, a clamping boss 221 is provided on the mounting seat 22, and a clamping part installed with the clamping boss 221 is provided at the bottom of the waste knife 81.

[0049] Since the second knife group 6 and the scrap knife group 8 are both on the lower die, in order to achieve synchronous stamping of the side panels and the scrap, the upper end surface of the cutting edge of the second knife group 6 and the upper end surface of the cutting edge of the scrap knife 81 are on the same horizontal plane.

[0050] The present invention applies the above die-cutting die to provide a die-cutting process for side panels, which first punches the sheet material and then performs die-cutting on the contour line, thereby avoiding deformation of the separation part between the sheets. Figures 9 to 11 As shown, the sheet is provided with a contour line c, a separation line d, a punching line e, and a door opening line f. The die-cutting process includes the following steps:

[0051] S1. A sheet material including a first sheet material b1 and a second sheet material b2 is moved from a feed port of a die-cutting die along a feed direction. The first sheet material b1 is moved to a first station and punched along the punching lines at both ends of a separation line to form two punched holes.

[0052] S2. The first sheet b1 is moved to the second workstation, and the second sheet b2 is moved to the first workstation. The first sheet b1 is punched for the second time along the contour line, door opening line, and separation line on the first sheet b1, and the front side contour of the first sheet b1 and the sheet on the discharge port side are separated. At the same time, the punching of the two punching holes on the second sheet b2 is completed.

[0053] Referring to the above steps, the subsequent die-cutting of the second sheet material b2 and the third sheet material b3 is completed.

[0054] In summary, the embodiment of the present invention provides a die-cutting mold and die-cutting process for side panels. By setting a first knife group, a second knife group and a waste knife group, the separation between the two sheets can be completed without setting a floating separation cutter. The upper end surfaces of the cutting edges of the second knife group are all in the same horizontal plane, without height difference, and the separated parts of the sheets are not easy to deform; in addition, the first knife group includes a fixed knife block, a fixed knife holder and a movable knife block assembly. The movable knife block assembly can not only shear the contour of the side panel, but also press the waste when shearing, thereby reducing the iron filings generated when the waste is segmented to damage the surface of the side panel, and at the same time reducing the downtime for wiping. Secondly, it avoids deformation of the incision of the waste segment, facilitates material discharge, and improves production efficiency; the die-cutting process provided by the present invention can avoid deformation of the separated parts between the sheets.

[0055] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A die-cutting die for side panels, characterized by: It comprises an upper die (1), a lower die (2), a first knife group (5), a second knife group (6), an elastic material pressing component (7) and a waste knife group (8); The first knife group (5) is fixed on the upper mold (1) with its cutting edge facing downwards. The first knife group (5) comprises a fixed knife block (51) with cutting edges on the side walls, a fixed knife holder (52) and a movable knife block assembly (53). The contour line formed by sequentially connecting the cutting edges of the fixed knife block (51), the fixed knife holder (52) and the movable knife block assembly (53) coincides with the contour line of the side panel. The second knife group (6) is fixed on the lower die (2), with its cutting edge facing upwards, and is arranged in a staggered and parallel manner with the cutting edge of the first knife group (5); the first knife group (5) and the second knife group (6) cooperate to punch the sheet material to form the side panels and waste material; An elastic material pressing component (7) is provided on at least one side of the first knife group (5), the elastic material pressing component (7) is located on the upper die (1), and the elastic material pressing component (7) is located directly above the second knife group (6) and is used for pressing the sheet material during stamping; The waste knife assembly (8) comprises a waste knife (81) fixed on the lower die (2), the waste knife (81) is located directly below the movable knife block assembly (53), the waste knife (81) and the fixed knife holder (52) cooperate to shear and segment the waste, and the movable knife block assembly (53) is used to press the material when the waste knife (81) and the fixed knife holder (52) cooperate to shear and segment the waste.

2. The die-cutting die for side panels according to claim 1, characterized in that: The fixed blade holder (52) is provided with a through slot (521), one end of the through slot (521) passes through the side wall of the fixed blade holder (52) to form an opening, and a cutting edge is provided on the bottom side of the fixed blade holder (52) near the opening. The movable blade block assembly (53) includes a gas spring (531) connected to the upper mold (1) at one end, and the other end of the gas spring (531) is connected to a movable blade block (532). The movable blade block (532) is inserted into the through slot (521) and has a cutting edge on the bottom side wall near the opening.

3. The die-cutting die for side panels according to claim 2, characterized in that: A step surface (5211) is provided in the through groove (521), a side wall of the movable blade block (532) is provided with a limiting boss (5321) for limiting the position with the step surface (5211), and a guide plate (533) is provided on the side wall of the movable blade block (532) for slidingly guiding the through groove (521).

4. The die-cutting die for side panels according to claim 2, characterized in that: The fixed knife block (51) or the fixed knife holder (52) is provided with an elastic ejector pin (54) fixed to the upper die (1).

5. The die-cutting die for side panels according to claim 2, characterized in that: The elastic pressing assembly (7) comprises a connecting plate (71) for fixing to the upper die (1), and elastic pressing blocks (72) are evenly distributed below the connecting plate (71).

6. The die-cutting die for side panels according to claim 1, characterized in that: The lower die (2) is provided with a mounting seat (22) for mounting the waste knife (81), and the width of the mounting seat (22) is smaller than the width of the waste knife (81).

7. The die-cutting die for side panels according to claim 1, characterized in that: The lower die (2) is further provided with a guide roller assembly (3) and a positioning assembly (4), wherein the guide roller assembly (3) is arranged in a row along the length direction of the lower die (2); and the positioning assembly (4) is distributed on both sides of the lower die (2).

8. The die-cutting die for side panels according to claim 6, characterized in that: A clamping boss (221) is provided on the mounting seat (22), and a clamping portion mounted on the clamping boss (221) is provided at the bottom of the waste cutter (81).

9. The die-cutting die for side panels according to claim 1, characterized in that: A material receiving cavity (21) is provided on the lower die (2), the bottom surface of the material receiving cavity (21) being an inclined surface extending downwardly in an outward direction of the lower die (2), a waste material recovery assembly (9) being provided in the material receiving cavity (21), the waste material recovery assembly (9) comprising a material receiving baffle (91) having a bottom surface extending downwardly in an outward direction thereof, and universal balls (92) being uniformly distributed on the material receiving baffle (91).

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