A floating cutter assembly and a stamping die

Abstract

The utility model relates to stamping processing equipment technical field more specifically, relate to a kind of floating cutter assembly and stamping die, wherein floating cutter assembly includes floating cutter body, guide component and elastic component, the guide component is used to fixedly connected in the fixed mould of stamping die, the elastic component is connected with the floating cutter body to drive the floating cutter body moves and resets, the floating cutter body has guide section and cutter head section, the transverse dimension of the guide section is greater than the transverse dimension of the cutter head section, the guide section is movably connected in the guide component along stamping direction, the cutter head section is protruding in the guide component. Since guide component is arranged in the fixed mould, it does not occupy the space of mould processing position, at this time, only cutter head section is needed to be stretched to insert block between for processing, therefore, the transverse dimension of cutter head section can be designed smaller, under the premise of not affecting stability and guiding accuracy, meet the demand of module standardization design.

Description

Technical Field

[0001] This utility model relates to the field of stamping equipment technology, and more specifically, to a floating cutter assembly and a stamping die. Background Technology

[0002] In precision stamping, to improve machining quality and reduce the generation of burrs and metal chips, a floating cutter structure is typically used in the die. (Reference) Figure 16 A common floating cutter stamping die includes a fixed die, two fixed die trimming inserts 100, a moving die, a scrap cutter 200, a nitrogen spring 300, and a floating cutter 400. The two fixed die trimming inserts 100 are fixedly connected to the fixed die. The floating cutter 400 is positioned between the two fixed die trimming inserts 100. The two fixed die trimming inserts 100 are used for guidance and limiting. The nitrogen spring 300 lifts the floating cutter 400 and provides force for the trimming. The scrap cutter 200 and the floating cutter 400 respectively press against both sides of the material for cutting.

[0003] However, using fixed-mold cutting edge inserts for positioning and guiding results in low guiding stability and precision, making the cutting edge prone to wear and chipping, thus increasing burrs and debris. One improvement is to add a guide plate or guide rail between the fixed-mold cutting edge insert and the floating cutter. However, this requires a large installation space between the two fixed-mold cutting edge inserts, necessitates custom design of the floating cutter and its guiding structure for different molds, and sometimes even requires adjustments to the insert structure, hindering standardized design. Utility Model Content

[0004] To overcome the problems of large installation space and inconvenience for standardized design of floating cutter in stamping dies in the prior art, the first aspect of this utility model provides a floating cutter assembly.

[0005] The second aspect of this utility model provides a stamping die.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a floating cutter assembly, comprising: a floating cutter body, a guide component, and an elastic component. The guide component is fixedly connected to the fixed mold of the stamping die. The elastic component is connected to the floating cutter body to drive the floating cutter body to move and then reset. The floating cutter body has a guide section and a cutter head section. The lateral dimension of the guide section is larger than the lateral dimension of the cutter head section. The guide section is movably connected to the guide component along the stamping direction, and the cutter head section extends out of the guide component.

[0007] In the technical solution of this utility model, since the guide component is set inside the fixed mold, it does not occupy the space of the mold processing position. At this time, only the cutter head needs to extend between the inserts for processing. Therefore, the lateral dimension of the cutter head can be designed to be small. Under the premise of not affecting stability and guiding accuracy, the processing requirements are met. By designing a guide section with a larger lateral dimension, the structural stability of the guide section is high when it moves in the guide component. Since the floating cutter assembly occupies little processing position space, it has little impact on the structure of the mold forming surface, making it easy to use in different molds and meeting the requirements of modular standardized design.

[0008] Furthermore, the guide component includes a cutter seat and a guide sleeve. The guide sleeve has a guide cavity that matches the guide section. The cutter seat has a mounting cavity, and the guide sleeve is detachably connected to the mounting cavity.

[0009] In this design, the cutter holder is used for external fixation and installation, the guide sleeve guides and lubricates the floating cutter body, and the guide sleeve can be disassembled and replaced after wear.

[0010] Furthermore, the guide sleeve is provided with a first limiting shoulder on one side of the mounting cavity, and the cutter seat is provided with an installation limiting shoulder on one side of the mounting cavity, with the first limiting shoulder abutting against the installation limiting shoulder.

[0011] In this solution, the guide sleeve and the cutter seat are positioned by the abutting of the first limiting shoulder and the installation limiting shoulder, so as to facilitate the installation and positioning of the guide sleeve and improve the installation accuracy.

[0012] Furthermore, the guide sleeve is provided with a second limiting shoulder on one side of the guide cavity, and the guide segment is provided with a guide limiting shoulder on the outer side, with the second limiting shoulder abutting against the guide limiting shoulder.

[0013] In this design, the guide section and guide sleeve of the floating cutter body are positioned by the abutting of the second limiting shoulder and the guide limiting shoulder, so as to facilitate the installation and positioning of the floating cutter and improve the installation accuracy.

[0014] Furthermore, the guide segment has a first positioning plane on its side and the guide sleeve has a second positioning plane on its inner side, with the first positioning plane and the second positioning plane fitting together.

[0015] In this solution, the first positioning plane on the side of the guide section and the second positioning plane of the guide sleeve are fitted together, so that the floating cutter body is at the correct cutter angle after installation, thus preventing the floating cutter body from rotating around the axis.

[0016] Furthermore, a transition section is provided between the guide section and the cutter head section, and the lateral dimensions at both ends of the transition section are matched with the guide section and the cutter head section at both ends, respectively.

[0017] In this design, a transition section is used to connect the guide section and the cutter head section, reducing stress concentration at the connection and improving the service life of the floating cutter body.

[0018] Furthermore, a pad is detachably connected to one end of the cutter holder near the elastic component. The pad has a mounting hole. The fixed end of the elastic component is connected to the pad, and the movable end of the elastic component passes through the mounting hole and is connected to the guide section.

[0019] In this solution, by selecting pads of different thicknesses, the clamping state between the elastic component and the floating cutter body can be adjusted.

[0020] Furthermore, an anti-rotation pin is connected between the cutter holder and the guide sleeve.

[0021] In this solution, the cutter holder and the guide sleeve are fixed by connecting anti-rotation pins, which at the same time restricts the relative rotation between the cutter holder and the guide sleeve around the axis.

[0022] Furthermore, the elastic component is a nitrogen spring.

[0023] In this solution, nitrogen springs are used to provide stable elastic force and have a long service life.

[0024] A stamping die includes the floating cutter assembly described above, and further includes a fixed die and a moving die capable of relative movement. The floating cutter assembly is connected in the fixed die. The fixed die has a first insert and a second insert, and a working space is formed between the first insert and the second insert. The cutter head of the floating cutter assembly extends downward from the working space, and the moving die has a scrap cutter facing the working space.

[0025] In this solution, the first and second inserts are used to position the material, and the floating cutter assembly and the scrap cutter are used to punch the material. Because the floating cutter assembly is designed in a standardized way, it can be used in different stamping dies, making the design of stamping dies more convenient.

[0026] Compared with the prior art, the beneficial effects of this utility model are: I. The floating cutter assembly of this utility model, since the guide component is set inside the fixed mold, does not occupy the space of the mold processing position. At this time, only the cutter head needs to extend between the inserts for processing. Therefore, the lateral dimension of the cutter head can be designed to be small. Under the premise of not affecting stability and guiding accuracy, the processing requirements are met. By designing a guide section with a larger lateral dimension, the structural stability of the guide section is high when it moves within the guide component. Since the floating cutter assembly occupies little processing position space, it has little impact on the structure of the mold forming surface, making it easy to use in different molds and meeting the needs of modular standardized design.

[0027] II. The stamping die of this utility model uses the first insert and the second insert to position the material, and uses the floating cutter assembly and the scrap cutter to punch the material, thereby performing stamping processing. Because the floating cutter assembly is designed in a standardized manner, it can be used in different stamping dies, making the design of stamping dies more convenient. Attached Figure Description

[0028] Figure 1 This is a structural cross-sectional view of the floating cutter assembly of this utility model; Figure 2 This is a top view of the floating cutter assembly of this utility model; Figure 3 This is a perspective view of the cutter holder structure; Figure 4 This is a top view of the cutter holder; Figure 5 This is a structural diagram of the pad; Figure 6 This is a top view of the guide sleeve; Figure 7 yes Figure 6 AA section view; Figure 8 yes Figure 6 BB section view; Figure 9 This is the main view of the floating cutter body; Figure 10 yes Figure 9 The left view; Figure 11 yes Figure 9 Top view; Figure 12 This is a cross-sectional view of the floating cutter assembly installed in the mold; Figure 13 yes Figure 12 A perspective view from an overhead viewpoint; Figure 14 This is a partial structural schematic diagram of the stamping die of this utility model; Figure 15 yes Figure 14A schematic diagram of a stamping die in a cut-off state; Figure 16 This is a schematic diagram of a common floating cutter stamping die structure.

[0029] In the attached diagram: 1. Floating cutter body; 11. Guide section; 111. Guide limiting shoulder; 112. First positioning plane; 12. Cutter head section; 13. Transition section; 2. Guide component; 21. Cutter seat; 211. Mounting cavity; 212. Mounting limiting shoulder; 22. Guide sleeve; 221. Guide cavity; 222. First limiting shoulder; 223. Second limiting shoulder; 224. Second positioning plane; 3. Elastic component; 4. Pad; 41. Mounting hole; 5. Anti-rotation pin; 6. Fixed mold; 61. First insert; 62. Second insert; 7. Moving mold; 8. Scrap cutter; 100. Fixed mold trimming insert; 200. Scrap cutter; 300. Nitrogen spring; 400. Floating cutter. Detailed Implementation

[0030] The accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. To better illustrate this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings. The positional relationships described in the drawings are for illustrative purposes only and should not be construed as limiting this patent.

[0031] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "long," and "short" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0032] The technical solution of this utility model will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings: Example 1 refer to Figure 1 and Figure 2This embodiment discloses a floating cutter assembly, including: a floating cutter body 1, a guide component 2, and an elastic component 3. The guide component 2 is fixedly connected within the fixed mold 6 of the stamping die. The elastic component 3 is connected to the floating cutter body 1 to drive the floating cutter body 1 to move and then reset. The floating cutter body 1 has a guide section 11 and a cutter head section 12. The lateral dimension of the guide section 11 is larger than the lateral dimension of the cutter head section 12. The guide section 11 is movably connected to the guide component 2 along the stamping direction, and the cutter head section 12 extends out of the guide component 2. The extended portion of the cutter head section 12 can extend from between the inserts of the die to support and cut the material.

[0033] In this embodiment, since the guide component 2 is located inside the fixed mold 6, it does not occupy the space of the mold processing position. At this time, only the cutter head section 12 needs to extend between the inserts for processing. Therefore, the lateral dimension of the cutter head section 12 can be designed to be small, which meets the processing requirements without affecting stability and guiding accuracy. By designing the guide section 11 with a larger lateral dimension, the structural stability of the guide section 11 is high when it moves within the guide component 2. Since the floating cutter assembly occupies little processing position space, it has little impact on the structure of the mold forming surface, making it easy to use in different molds and meeting the requirements of modular standardized design.

[0034] refer to Figure 1 as well as Figures 3 to 8 The guide component 2 includes a cutter holder 21 and a guide sleeve 22. The guide sleeve 22 has a guide cavity 221 that matches the guide section 11. The cutter holder 21 has a mounting cavity 211, and the guide sleeve 22 is detachably connected to the mounting cavity 211. In this embodiment, the cutter holder 21 is used for external fixing and installation, and the guide sleeve 22 can guide and lubricate the floating cutter body 1. The guide sleeve 22 can be disassembled and replaced after wear. The guide cavity 221 extends along the moving direction of the floating cutter body 1. During the movement of the floating cutter body 1, the guide section 11 is always in the guide cavity 221, resulting in high guiding stability.

[0035] refer to Figures 6 to 8 as well as Figure 3 The guide sleeve 22 has a first limiting shoulder 222 on one side within the mounting cavity 211, and the cutter seat 21 has a mounting limiting shoulder 212 on one side within the mounting cavity 211. The floating cutter body 1 abuts against the mounting limiting shoulder 212. In this embodiment, the abutment between the first limiting shoulder 222 and the mounting limiting shoulder 212 positions the guide sleeve 22 and the cutter seat 21, facilitating the installation and positioning of the guide sleeve 22 and improving installation accuracy.

[0036] refer to Figures 6 to 8 as well as Figure 9The guide sleeve 22 has a second limiting shoulder 223 on one side inside the guide cavity 221, and a guide limiting shoulder 111 is provided on the outer side of the guide section 11. The second limiting shoulder 223 abuts against the guide limiting shoulder 111. In this embodiment, the abutment between the second limiting shoulder 223 and the guide limiting shoulder 111 positions the guide section 11 of the floating cutter body 1 and the guide sleeve 22, so as to facilitate the installation and positioning of the floating cutter 400 and improve the installation accuracy.

[0037] refer to Figure 9 , Figure 11 as well as Figure 7 The guide segment 11 has a first positioning plane 112 on its side, and the guide sleeve 22 has a second positioning plane 224 on its inner side. The first positioning plane 112 and the second positioning plane 224 are in contact with each other. In this embodiment, the contact between the first positioning plane 112 on the side of the guide segment 11 and the second positioning plane 224 of the guide sleeve 22 ensures that the floating cutter body 1 is at the correct cutter angle after installation, preventing the floating cutter body 1 from rotating around the axial direction. The main body of the guide segment 11 is cylindrical, and the first positioning plane 112 is provided on the side of the cylinder. This ensures that the guide segment 11 is installed in the guide sleeve 22 in a fixed position, preventing the floating cutter body 1 from rotating around the axial direction and affecting the posture of the blade.

[0038] refer to Figure 1 A pad 4 is detachably connected to one end of the cutter holder 21 near the elastic member 3. The pad 4 has a mounting hole 41. The fixed end of the elastic member 3 is connected to the pad 4, and the moving end of the elastic member 3 passes through the mounting hole 41 and is connected to the guide section 11. In this embodiment, by selecting pads 4 of different thicknesses, the clamping state between the elastic member and the floating cutter body can be adjusted. The pad 4 and the cutter holder 21 can be connected by bolts. Adjustment can be achieved by using multiple pads 4 of different thicknesses or by stacking multiple pads 4 to obtain different thicknesses.

[0039] refer to Figure 1 An anti-rotation pin 5 is connected between the cutter holder 21 and the guide sleeve 22. In this embodiment, the anti-rotation pin 5 is used to fix the cutter holder 21 and the guide sleeve 22, and at the same time restricts the relative rotation between the cutter holder 21 and the guide sleeve 22 around the axial direction.

[0040] In this embodiment, the elastic component 3 is a nitrogen spring. Using a nitrogen spring can provide stable elastic force and has a long service life.

[0041] Example 2 refer to Figure 2 This embodiment is similar to Embodiment 1, except that in this embodiment, reference is used. Figure 9 and Figure 10A transition section 13 is provided between the guide section 11 and the cutter head section 12. The lateral dimensions at both ends of the transition section 13 match those of the guide section 11 and the cutter head section 12, respectively. In this embodiment, the transition section 13 connects the guide section 11 and the cutter head section 12, reducing stress concentration at the connection and improving the service life of the floating cutter body. The transition section 13 may have an inclined surface that slopes from the guide section 11 to the cutter head section 12. In other embodiments, the transition section 13 may also be constructed using a curved surface.

[0042] Example 3 refer to Figure 12-15 This embodiment discloses a stamping die, including a floating cutter assembly as described in Embodiment 1 or Embodiment 2, and also includes a fixed die 6 and a moving die 7 that can move relative to each other. The floating cutter assembly is connected in the fixed die 6. The fixed die 6 is provided with a first insert 61 and a second insert 62. A working space is formed between the first insert 61 and the second insert 62. The cutter head section 12 of the floating cutter assembly extends downward from the working space. The moving die 7 is provided with a scrap cutter 8 facing the working space.

[0043] In this embodiment, the first insert 61 and the second insert 62 are used to position the material. The floating cutter assembly and the scrap cutter 8 are used to counteract each other, thereby stamping the material. Since the floating cutter assembly is designed in a standardized manner, it can be used in different stamping dies, making the design of stamping dies more convenient.

[0044] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A floating cutter assembly, characterized in that: The device includes a floating cutter body (1), a guide component (2), and an elastic component (3). The guide component (2) is fixedly connected to the fixed mold (6) of the stamping die. The elastic component (3) is connected to the floating cutter body (1) to drive the floating cutter body (1) to move and then reset. The floating cutter body (1) has a guide section (11) and a cutter head section (12). The lateral dimension of the guide section (11) is larger than the lateral dimension of the cutter head section (12). The guide section (11) is movably connected to the guide component (2) along the stamping direction. The cutter head section (12) extends out of the guide component (2).

2. The floating cutter assembly according to claim 1, characterized in that: The guide component (2) includes a cutter seat (21) and a guide sleeve (22). The guide sleeve (22) has a guide cavity (221) that matches the guide section (11). The cutter seat (21) has an installation cavity (211). The guide sleeve (22) is detachably connected to the installation cavity (211).

3. The floating cutter assembly according to claim 2, characterized in that: The guide sleeve (22) has a first limiting shoulder (222) on one side inside the mounting cavity (211), and the cutter seat (21) has an installation limiting shoulder (212) on one side inside the mounting cavity (211). The first limiting shoulder (222) abuts against the installation limiting shoulder (212).

4. The floating cutter assembly according to claim 3, characterized in that: The guide sleeve (22) has a second limiting shoulder (223) on one side inside the guide cavity (221), and the guide segment (11) has a guide limiting shoulder (111) on the outside. The second limiting shoulder (223) abuts against the guide limiting shoulder (111).

5. The floating cutter assembly according to claim 4, characterized in that: The guide section (11) has a first positioning plane (112) on its side and the guide sleeve (22) has a second positioning plane (224) on its inner side. The first positioning plane (112) and the second positioning plane (224) are in contact with each other.

6. The floating cutter assembly according to claim 5, characterized in that: A transition section (13) is provided between the guide section (11) and the cutter head section (12), and the lateral dimensions at both ends of the transition section (13) are respectively matched with the guide section (11) and the cutter head section (12).

7. The floating cutter assembly according to claim 6, characterized in that: The cutter holder (21) is detachably connected to a pad (4) at one end near the elastic member (3). The pad (4) has an installation hole (41). The fixed end of the elastic member (3) is connected to the pad (4), and the movable end of the elastic member (3) passes through the installation hole (41) and is connected to the guide section (11).

8. The floating cutter assembly according to claim 7, characterized in that: An anti-rotation pin (5) is connected between the cutter holder (21) and the guide sleeve (22).

9. The floating cutter assembly according to claim 8, characterized in that: The elastic component (3) is a nitrogen spring.

10. A stamping die, characterized in that: The floating cutter assembly includes the floating cutter assembly according to any one of claims 1 to 9, and further includes a fixed mold (6) and a moving mold (7) capable of relative movement. The floating cutter assembly is connected in the fixed mold (6). The fixed mold (6) is provided with a first insert (61) and a second insert (62). A working space is formed between the first insert (61) and the second insert (62). The cutter head section (12) of the floating cutter assembly extends downward from the working space. The moving mold (7) is provided with a scrap cutter (8) facing the working space.

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