Rolling cutting die

Abstract

The utility model discloses a rolling and cutting die which comprises a lower die base, a lower die cutting edge, a lower die cutting edge, a lower die cutting edge and an upper die cutting edge. The top of the lower die base is provided with a lower die cutting edge. The upper die holder and the lower die holder are arranged oppositely up and down, and the upper die holder can do lifting motion relative to the lower die holder; the bottom of the upper die base is provided with a material pressing plate opposite to the lower die knife edge, a punch used for being matched with the lower die knife edge to cut the top of a cut-off part of a product and two hobs used for being matched with the lower die knife edge to cut the two sides of the cut-off part of the product, and the two hobs are located on the two sides below the punch respectively. The die is suitable for cutting operation of products shaped like the Chinese character'ji ', and the punch and the two hobs are combined, so that the cutting operation can be completed by one set of die.

Description

Technical Field

[0001] The utility model relates to the technical field of cutting dies, in particular to a rolling cutting die. Background Art

[0002] In the current manufacturing industry, the cutting operation of the "F"-shaped products is usually done by using two cuts and two sets of molds to complete the entire product cutting process. That is, the top of the product is cut once, and then the two sides are cut once. Although the cutting method guarantees the basic shape and size of the product to a certain extent, in actual operation, it exposes multiple efficiency and production problems.

[0003] First of all, this cutting method is inefficient. Since the cutting needs to be done twice and the mold needs to be replaced each time, it undoubtedly increases the time and labor costs of the entire production process. Especially in large-scale production, this inefficient cutting method will lead to serious limitations in production capacity and cannot meet market demand.

[0004] Secondly, using two sets of molds also brings additional costs and maintenance issues. The design and manufacture of molds require a lot of money and time, and two sets of molds mean double the cost. At the same time, mold maintenance and care is also an expense that cannot be ignored, especially when the mold is worn or damaged, the cost of replacement and repair is even higher.

[0005] In addition, there will be joint marks at the junction of the two cuts on the product, affecting the appearance quality of the cut surface. Utility Model Content

[0006] In order to overcome the problems of low efficiency, high production cost and influence on the appearance quality of the cut surface in the cutting method for the ""-shaped" products in the prior art, the utility model provides a rolling cutting die.

[0007] The technical solution of the utility model is as follows:

[0008] A rolling cutting die, comprising:

[0009] A lower die base, the top of which is provided with a lower die blade for placing and cutting products;

[0010] The upper die seat is arranged opposite to the lower die seat in up and down direction and can move up and down relative to the lower die seat. The bottom of the upper die seat is provided with a pressing plate arranged opposite to the lower die blade, a punch for cooperating with the lower die blade to cut the top of the cut-off part of the product, and two rollers for cooperating with the lower die blade to cut the two sides of the cut-off part of the product, and the two rollers are respectively located on both sides below the punch.

[0011] As a preferred solution of the utility model, the top contour of the lower die blade matches the contour of the product, and the bottom contour of the punch matches the top contour of the product.

[0012] As a preferred solution of the utility model, the hob is in a truncated cone shape, and the diameter of the end of the hob close to the product is larger than the diameter of the end of the hob away from the product.

[0013] As a preferred solution of the utility model, a punch stopper is provided at the bottom of the upper die seat, the punch stopper is arranged close to the side of the punch away from the product, and the two rollers are rotatably arranged at the lower part of the side of the punch stopper close to the product.

[0014] As a preferred solution of the utility model, a blocking block is arranged on the top of the lower die base, and the blocking block is located on a side of the punch block away from the product.

[0015] As a preferred solution of the utility model, a wear-resistant block is arranged on the upper part of one side of the blocking block close to the product.

[0016] As a preferred solution of the utility model, a knife edge stopper is arranged on the top of the lower die base, and the knife edge stopper is arranged close to the side of the lower die knife edge away from the hob.

[0017] As a preferred solution of the utility model, pressing blocks are arranged on both sides of the bottom of the pressing plate, and the pressing plate and the pressing blocks on both sides thereof form a pressing cavity. When the upper die seat descends to the lowest point, the inner wall of the pressing cavity contacts the outer surface of the product.

[0018] As a preferred solution of the utility model, a spring and a first guide column are arranged between the pressure plate and the upper die seat, the upper and lower ends of the spring are respectively abutted against the bottom surface of the upper die seat and the bottom surface of the pressure plate, the lower end of the first guide column is fixed to the top of the pressure plate, the upper die seat is provided with a guide hole corresponding to the setting of the first guide column, the upper end of the first guide column is slidably mounted in the guide hole, a limiting block is arranged on the top of the first guide column, and the diameter of the limiting block is larger than the diameter of the guide hole.

[0019] As a preferred solution of the utility model, a lower limit column is arranged on the top of the lower die base, and an upper limit column is arranged on the bottom of the upper die base corresponding to the position of the lower limit column.

[0020] As a preferred solution of the utility model, a second guide column is arranged on the top of the lower die base, a guide sleeve is arranged on the bottom of the upper die base corresponding to the position of the second guide column, and the upper end of the second guide column is slidably sleeved in the guide sleeve.

[0021] Compared with the prior art, the beneficial effects of the utility model are:

[0022] The rolling cutting die provided by the utility model is suitable for cutting operations of ""-shaped" products. By using a combination of a punch and two rolling cutters, the cutting of both side edges and the top plane of the cut-off part of the product can be completed simultaneously during one pressing process, so that one set of dies can complete the cutting operation, which not only reduces the production cost but also significantly improves the cutting efficiency. Moreover, there is no joint mark in one cutting, and the cut surface of the product cut by the rolling cutter produces less burrs, thereby ensuring the appearance quality of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is a structural schematic diagram of the rolling and cutting mold in an embodiment of the utility model in a mold opening state;

[0025] Figure 2 It is a front side cross-sectional view of a rolling cutting mold in an embodiment of the utility model in a mold opening state;

[0026] Figure 3 It is a front side cross-sectional view of a rolling cutting mold in an embodiment of the utility model in a semi-open mold state;

[0027] Figure 4 It is a front side cross-sectional view of a rolling cutting mold in an embodiment of the utility model in a closed mold state;

[0028] Figure 5 It is a right side cross-sectional view of a rolling cutting mold in an embodiment of the utility model in a mold opening state;

[0029] Figure 6 It is a right side cross-sectional view of a rolling cutting mold in an embodiment of the utility model in a semi-open mold state;

[0030] Figure 7 It is a right side cross-sectional view of a rolling cutting mold in an embodiment of the utility model in a closed mold state.

[0031] In the figure,

[0032] 1. Lower die base; 2. Upper die base; 201. Guide hole; 3. Lower die blade; 4. Pressing plate; 5. Punch; 6. Roller; 7. Punch stopper; 8. Stopper; 9. Wear-resistant block; 10. Blade stopper; 11. Pressing block; 12. Pressing cavity; 13. Spring; 14. First guide column; 1401. Limit block; 15. Lower limit column; 16. Upper limit column; 17. Second guide column; 18. Guide sleeve; 100. Product; 1001. Cut-off part. DETAILED DESCRIPTION

[0033] In order to make the technical problems, technical solutions and beneficial effects to be solved by the utility model more clearly understood, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. At the same time, it is stated that the embodiments described below are only used to explain the utility model and are not used to limit the utility model.

[0034] It should be noted that the terms "install", "set", "connect", "fix" and the like should be understood in a broad sense. For example, they can be fixedly connected, detachably connected, or integrated; they can be mechanically connected or electrically connected; they can be directly connected or indirectly connected through an intermediate medium; they can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. The indicated orientation or position relationship is based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the application product is usually placed when in use, or the orientation or position relationship commonly understood by those skilled in the art, or the orientation or position relationship in which the application product is usually placed when in use. It is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. The terms "first" and "second" are only used for the purpose of convenience of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features.

[0035] See also Figures 1 to 7The embodiment of the utility model provides a rolling cutting die, including a lower die base 1 and an upper die base 2, wherein the upper die base 2 is arranged opposite to the lower die base 1 in the upper and lower directions and can be driven by an external driving member to perform lifting and lowering motions relative to the lower die base 1. The top of the lower die base 1 is provided with a lower die blade 3 for placing and cutting the product 100, and the bottom of the upper die base 2 is provided with a pressing plate 4 arranged opposite to the lower die blade 3, a punch 5 for cooperating with the lower die blade 3 to cut the top of the cut-off portion 1001 of the product 100, and two rollers 6 for cooperating with the lower die blade 3 to cut the cut-off portion 1001 of the product 100, and the two rollers 6 are respectively located on both sides below the punch 5. The rolling cutting die provided in this embodiment is suitable for cutting the "F"-shaped product 100. By combining the punch 5 and two rollers 6, the product 100 is first wrapped around the entire circumference. When the upper die seat 2 is pressed downward, the two rollers 6 cooperate with the cutting edge of the lower die blade 3 to first cut the two sides of the cut-off portion 1001 of the product 100. Then the punch 5 is moved down to cooperate with the cutting edge of the lower die blade 3 to cut the top plane of the cut-off portion 1001 of the product 100. This achieves that a set of dies can complete the cutting operation without the need for additional processes or equipment, which not only reduces the production cost but also significantly improves the cutting efficiency. Since the roller 6 is used for cutting, the burrs generated on the cutting surface are less, thereby ensuring the appearance quality of the product 100. In addition, there is no joint mark in one cutting, which further improves the appearance quality of the product 100. It should be noted that when placing the product 100, the cutting line of the product 100 (i.e., the connecting line formed by the product 100 and its cut-off portion 1001) needs to be aligned with the cutting edge of the lower die blade 3.

[0036] See also Figure 5 In one embodiment, the top contour of the lower die blade 3 matches the contour of the product 100, and the bottom contour of the punch 5 matches the top contour of the product 100. By setting the top contour of the lower die blade 3 to match the contour of the product 100, when the product 100 is placed on the lower die base 1, it can ensure that the product 100 is accurately positioned and fixed, making the cutting process more accurate and reducing the cutting error caused by inaccurate positioning. By setting the bottom contour of the punch 5 to match the top contour of the product 100, when the punch 5 descends for cutting, it can accurately cut along the top contour of the product 100, reducing the burrs and cutting residues generated during the cutting process, and improving the appearance quality of the product 100.

[0037] See also Figures 1 to 4In one embodiment, the hob 6 is in a truncated cone shape, and the diameter of the end of the hob 6 close to the product 100 is larger than the diameter of the end of the hob 6 away from the product 100. The truncated cone-shaped hob 6 can generate a certain extrusion force and shear force during the cutting process, which helps to reduce burrs and cutting residues on the cutting surface, and because the diameter of the hob 6 is gradually reduced, the cutting surface can be smoother and neater, thereby improving the appearance quality of the product 100.

[0038] See also Figures 1 to 4 In one embodiment, a punch stopper 7 is provided at the bottom of the upper die base 2, and the punch stopper 7 is provided close to the side of the punch 5 away from the product 100, and two rollers 6 are rotatably provided at the lower part of the side of the punch stopper 7 close to the product 100. The setting of the punch stopper 7 provides a stable guide and support for the punch 5, ensuring that the punch 5 maintains a straight line motion during the descent process, preventing deflection or shaking, and improving the accuracy and consistency of cutting. In addition, since the two rollers 6 are rotatably provided on the punch stopper 7, and the rollers 6 have a cutting edge all around, the utilization rate of the cutting edge of the rollers 6 is greatly improved.

[0039] In some specific embodiments, the punch 5 and the punch stopper 7 are fixed to the bottom of the upper die base 2 by screws, and the lower die blade 3 is fixed to the top of the lower die base 1 by screws and fixing pins.

[0040] See also Figures 1 to 4 In one embodiment, a stopper 8 is provided on the top of the lower die base 1, and the stopper 8 is located on the side of the punch stopper 7 away from the product 100. The setting of the stopper 8 can prevent the punch 5 or the punch stopper 7 from deviating to the side away from the product 100 when moving downward, thereby ensuring the accuracy and consistency of cutting. In addition, a wear-resistant block 9 is provided on the upper part of the side of the stopper 8 close to the product 100 to extend the service life of the mold.

[0041] In some specific embodiments, the blocking block 8 is fixed to the top of the lower die base 1 by screws, and the wear-resistant block 9 is fixed to the upper part of the side of the blocking block 8 close to the product 100 by screws.

[0042] See also Figures 1 to 4 In one embodiment, a knife edge stopper 10 is provided on the top of the lower die base 1, and the knife edge stopper 10 is provided close to the side of the lower die knife edge 3 away from the hob 6. The provision of the knife edge stopper 10 can ensure the stability of the lower die knife edge 3, prevent the lower die knife edge 3 from deviating along the side away from the hob 6 due to the force of the punch 5 or the hob 6 on the product 100 during the cutting process, ensure the cutting accuracy, and make the cutting boundary clearer and more accurate.

[0043] See also Figures 1 to 7In one embodiment, a pressing block 11 is provided on both sides of the bottom of the pressing plate 4, and the pressing plate 4 and the pressing blocks 11 on both sides thereof are arranged to form a pressing cavity 12. When the upper die holder 2 is lowered to the lowest position, the inner wall of the pressing cavity 12 contacts the outer surface of the product 100, forming a stable pressing area, which helps to fix the product 100 during the cutting process to prevent it from moving or deforming, thereby ensuring the accuracy and consistency of the cutting. At the same time, the stable pressing also helps to reduce burrs and waste generated during the cutting process, thereby improving the cutting quality and the appearance quality of the product 100.

[0044] See also Figures 1 to 7 In one embodiment, a spring 13 and a first guide post 14 are provided between the press plate 4 and the upper die seat 2. The upper and lower ends of the spring 13 are respectively in contact with the bottom surface of the upper die seat 2 and the bottom surface of the press plate 4. The lower end of the first guide post 14 is fixed to the top of the press plate 4. The upper die seat 2 is provided with a guide hole 201 corresponding to the setting of the first guide post 14. The upper end of the first guide post 14 is slidably sleeved in the guide hole 201. A limit block 1401 is provided at the top of the first guide post 14, and its diameter is greater than the diameter of the guide hole 201, which plays a role in limiting the stroke of the press plate 4. The spring 13, as an elastic element, can absorb and buffer the impact force and vibration generated by the upper die seat 2 during the stamping process, and reduce the direct impact between the press plate 4 and the product 100. The setting of the first guide post 14 and the guide hole 201 ensures the stability and accuracy of the press plate 4 during the up and down movement, avoids the deflection or displacement of the press plate 4, and ensures the accuracy and consistency of the cutting.

[0045] Preferably, multiple springs 13 are provided, and multiple springs 13 are arranged in an array between the pressing plate 4 and the upper die seat 2, which can provide a more uniform and stable resilience. Multiple pairs of first guide pillars 14 and guide holes 201 are provided, and multiple pairs of first guide pillars 14 and guide holes 201 are also arranged in an array on the pressing plate 4 and the upper die seat 2, which can increase the bearing capacity and rigidity of the pressing plate 4, making the pressing plate 4 more stable when subjected to punching pressure, avoiding deformation and damage of the pressing plate 4, and extending the service life of the mold.

[0046] See also Figure 1 , Figures 5 to 7 In one embodiment, a lower limit post 15 is provided on the top of the lower die base 1, and an upper limit post 16 is provided on the bottom of the upper die base 2 at a position corresponding to the lower limit post 15. The lower limit post 15 cooperates with the upper limit post 16 to limit the lowest position of the upper die base 2. By limiting the lowest position of the upper die base 2, it can be ensured that the stamping process stops at a predetermined position, avoiding excessive collision between the upper die base 2 and the lower die base 1, and reducing the risk of wear and damage to the mold. At the same time, it also prevents the product 100 from being over-extruded or damaged, ensuring the quality of the product 100.

[0047] Preferably, two pairs of lower limiting posts 15 and upper limiting posts 16 are provided and are respectively arranged on two opposite sides, which can better play the role of limiting the lowest position of the upper mold base 2.

[0048] See also Figure 1 , Figures 5 to 7 In one embodiment, a second guide post 17 is disposed on the top of the lower die base 1, a guide sleeve 18 is disposed at the bottom of the upper die base 2 at a position corresponding to the second guide post 17, and the upper end of the second guide post 17 is slidably sleeved in the guide sleeve 18. Through the cooperation of the second guide post 17 and the guide sleeve 18, it can be ensured that the motion trajectory of the upper die base 2 during the stamping process is accurate and stable, which helps to maintain the accuracy of the mold, especially in the occasions where high-precision stamping is required.

[0049] Preferably, two pairs of second guide pins 17 and guide sleeves 18 are provided and are respectively arranged on two opposite sides, so as to ensure that the movement trajectory of the upper die base 2 during the stamping process is accurate and stable.

[0050] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the claims attached to the utility model.

[0051] The above is an exemplary description of the utility model patent in conjunction with the accompanying drawings. It is obvious that the implementation of the utility model patent is not limited to the above-mentioned method. As long as various improvements are made by adopting the method concept and technical solution of the utility model patent, or the concept and technical solution of the utility model patent are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A rolling cutting die, characterized in that: include: A lower die base, the top of which is provided with a lower die blade for placing and cutting products; The upper die seat is arranged opposite to the lower die seat in up and down direction and can move up and down relative to the lower die seat. The bottom of the upper die seat is provided with a pressing plate arranged opposite to the lower die blade, a punch for cooperating with the lower die blade to cut the top of the cut-off part of the product, and two rollers for cooperating with the lower die blade to cut the two sides of the cut-off part of the product, and the two rollers are respectively located on both sides below the punch.

2. The rolling cutting die according to claim 1, characterized in that: The top contour of the lower die blade matches the contour of the product, and the bottom contour of the punch matches the top contour of the product.

3. The rolling cutting die according to claim 1, characterized in that: The hob is in a truncated cone shape, and the diameter of one end of the hob close to the product is greater than the diameter of one end of the hob away from the product.

4. The rolling cutting die according to claim 1, characterized in that: A punch stopper is arranged at the bottom of the upper die seat, and the punch stopper is arranged close to the side of the punch away from the product, and the two rollers are rotatably arranged at the lower part of the side of the punch stopper close to the product.

5. The rolling cutting die according to claim 4, characterized in that: A blocking block is arranged on the top of the lower die seat, and the blocking block is located at a side of the punch block away from the product.

6. The rolling cutting die according to claim 5, characterized in that: A wear-resistant block is arranged on the upper part of one side of the blocking block close to the product.

7. The rolling cutting die according to claim 1, characterized in that: A knife edge stopper is arranged on the top of the lower die seat, and the knife edge stopper is arranged close to the side of the lower die knife edge away from the hob.

8. The rolling cutting die according to claim 1, characterized in that: Pressing blocks are arranged on both sides of the bottom of the pressing plate, and the pressing plate and the pressing blocks on both sides thereof are arranged to form a pressing cavity. When the upper die seat is lowered to the lowest point, the inner wall of the pressing cavity contacts the outer surface of the product.

9. The rolling cutting die according to claim 1 or 8, characterized in that: A spring and a first guide column are arranged between the pressure plate and the upper die seat, the upper and lower ends of the spring are respectively in contact with the bottom surface of the upper die seat and the bottom surface of the pressure plate, the lower end of the first guide column is fixed to the top of the pressure plate, the upper die seat is provided with a guide hole corresponding to the setting of the first guide column, the upper end of the first guide column is slidably sleeved in the guide hole, a limiting block is arranged on the top of the first guide column, and the diameter of the limiting block is larger than the diameter of the guide hole.

10. The rolling cutting die according to claim 1, characterized in that: A lower limiting column is arranged on the top of the lower die seat, and an upper limiting column is arranged on the bottom of the upper die seat corresponding to the position of the lower limiting column.

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