Alloy copper strip slitting equipment and method for switch socket
By using an adaptive clamping and guiding structure of the transition component in the copper alloy strip slitting equipment, the problems of side bending and wavy edge in the thin strip slitting process are solved, achieving high-precision and consistent slitting results.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- GUANGZHOU COPPER MATERIALS FACTORY CO LTD
- Filing Date
- 2026-04-08
- Publication Date
- 2026-05-15
AI Technical Summary
In the existing technology, copper alloy strip slitting equipment is prone to side bending and wavy edges when slitting thin strips, which leads to instability in subsequent processing and makes it difficult to achieve high precision and consistency.
The transition assembly includes a rigid support ring, an elastic support layer, and a rigid clamping ring. The clamping contact area is formed by the staggered arrangement of the cutter head and the rigid clamping ring. The radial compression of the elastic support layer is used to achieve adaptive clamping force adjustment, and the movement path of the strip is stabilized by the guide groove area and the protruding pressure relief area.
It improves the width consistency and edge quality of copper alloy strip after slitting, reduces the occurrence of side bending and wavy edges, and enhances the stability and edge flatness of the slitting process.
Smart Images
Figure CN122033318A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of slitting equipment technology, and in particular to a slitting equipment and method for alloy copper strips used in switches and sockets. Background Technology
[0002] In switch and socket products, to achieve performance requirements such as conductive connection, elastic clamping, and fatigue resistance, copper alloy strips (such as phosphor bronze and brass) are often stamped into conductive components such as sockets, springs, and terminals. These conductive components are typically made by slitting the strip into several strips, which are then subjected to stamping, bending, riveting, or electroplating processes. Therefore, the slitting quality of the copper alloy strip directly affects the positioning accuracy, die life, and conductivity and assembly reliability of the finished product during subsequent stamping.
[0003] In existing technologies, longitudinal slitting (cutting) equipment for metal strip typically employs an upper and lower cutter shaft arrangement. Multiple disc cutters (slitting discs) are mounted on the cutter shafts, and the axial position and slitting width of adjacent discs are determined by components such as spacers / washers. The strip is slitted through the shearing gap between the upper and lower cutters under the action of traction rollers, pressure rollers, or winding tension. This type of structure is technologically mature and widely applicable, but it still has some shortcomings when used for thinner copper alloy strips or in scenarios requiring high width consistency and edge quality.
[0004] For example, after slitting, slitting products often exhibit defects such as lateral bending (side curvature) along the length of the strip and wavy edges (wavy edges). Excessive side curvature can lead to subsequent feeding deviation and unstable positioning; wavy edges can easily cause edge overlap, scratches, and fluctuations in effective width, reducing the consistency of stamping. These defects usually originate from uneven stress on the strip edges at the moment of slitting, insufficient or asynchronous clamping traction, and lateral drift caused by deviation at the winding end and tension fluctuations. This results in uneven distribution of residual stress in the strip, which is released after slitting, ultimately manifesting as side bending and wavy edges.
[0005] Therefore, there is an urgent need for a slitting device that can stably clamp and traction the strip near the slitting zone and effectively constrain the movement path of the strip, so as to improve problems such as lateral curvature, wavy edge and width consistency. Summary of the Invention
[0006] The purpose of this invention is to address the shortcomings of existing technologies by providing an alloy copper strip cutting device and method for switches and sockets.
[0007] To achieve the above objectives, the present invention adopts the following technical solution: an alloy copper strip slitting device for switches and sockets, comprising a machine body, a first cutter shaft and a second cutter shaft rotatably mounted on the machine body, and a plurality of cutter assemblies arranged axially along the first cutter shaft and the second cutter shaft; Each of the aforementioned tool assemblies includes a tool head and a transition assembly, wherein the transition assembly includes a rigid support ring coaxially arranged, an elastic support layer disposed on the outer periphery of the rigid support ring, and a rigid clamping ring disposed on the outer periphery of the elastic support layer; The cutter disc has a first end face and a second end face, a first annular cutting edge is formed on the outer periphery of the first end face, and a second annular cutting edge is formed on the outer periphery of the second end face. The first annular cutting edge and / or the second annular cutting edge constitute a slitting blade. Several of the aforementioned tool assemblies are detachably mounted on the first and second tool shafts, and a transition assembly is provided between two adjacent tool discs; During slitting, the cutter discs on the first cutter shaft and the second cutter shaft are arranged alternately, so that the slitting blades of the opposing cutter discs form a rotating shearing engagement zone to slit the alloy copper strip. The rotating shearing engagement zone forms the shearing point P. At the same time, the outer circular surface of the opposing cutter disc presses against the outer circular surface of the opposing rigid clamping ring to form a clamping contact zone. The position in the clamping contact zone closest to the shearing point P is the clamping point Q. The strip formed by slitting is clamped between the outer circular surface of the opposing cutter disc and the outer circular surface of the opposing rigid clamping ring, and is synchronously pulled and output with the rotation of the cutter shaft in the clamped state.
[0008] Preferably, under the pressing force, the elastic support layer undergoes radial compression, causing the rigid clamping ring to generate a controlled radial clearance e relative to the rigid support ring, thereby forming a clamping force on the strip; and the clamping gap of the clamping contact area is determined by the structural dimensions of the transition assembly and the radial clearance e.
[0009] Preferably, the distance between the shearing point P and the clamping point Q along the running direction of the strip is L, and the distance L adapts adaptively with the radial clearance amount e, so that the alloy copper strips of different thickness ranges are clamped and pulled within a short distance after shearing and separation.
[0010] Preferably, when the rigid clamping ring generates a radial clearance amount e, the outer working contour of the rigid clamping ring forms an eccentric state relative to the outer contour of the cutter head, so that a guide groove area is formed circumferentially between the outer surface of the rigid clamping ring and the outer surface of the cutter head; the strip enters the guide groove area under the action of clamping force to obtain lateral limiting guidance; the circumferential area adjacent to the guide groove area forms a protruding pressure relief area; Furthermore, when the thickness of the alloy copper strip changes, the radial clearance amount e causes the embedding depth of the strip in the guide groove area to change adaptively, thereby increasing the clamping force of the clamping contact area on the strip as the thickness of the alloy copper strip increases and decreasing as the thickness of the alloy copper strip decreases, so that the clamping force is consistent with the direction of change of the cutting resistance during the cutting process.
[0011] Preferably, the rigid support ring is coaxially and fixedly connected to the cutter head, and the elastic support layer is bonded to the rigid support ring and the rigid clamping ring respectively.
[0012] Preferably, the machine body is provided with an adjustment assembly for adjusting the center distance between the first cutter shaft and the second cutter shaft. The adjustment assembly includes a drive shaft rotatably mounted inside the machine body, a swing arm fixedly mounted on the surface of the drive shaft, the first cutter shaft being rotatably connected to the swing arm, a worm gear fixedly mounted at the end of the drive shaft, and a worm engaging with the worm gear rotatably mounted on the side of the machine body; a locking bolt for abutting the swing arm is threaded on the upper side of the machine body.
[0013] Preferably, gears are fixedly mounted on the surfaces of both the first and second cutter shafts, and the two gears mesh to drive each other. A drive motor is provided inside the machine body. The drive motor drives the second cutter shaft to rotate through a sprocket and chain drive, and drives the first cutter shaft to rotate synchronously through the meshing of the gears.
[0014] Preferably, the axial width of the cutter head is the same as the width of the strip, so that strips of different specifications can be cut simultaneously by configuring cutter heads with different axial widths.
[0015] This invention proposes a method for slitting alloy copper strips, comprising: S1. Introduce the alloy copper strip between the first cutter shaft and the second cutter shaft; S2. Drive the first cutter shaft and the second cutter shaft to rotate relative to each other, so that the first annular cutting edge and / or the second annular cutting edge of the opposing cutter disc form a rotary shearing engagement area and constitute a shearing point P, and perform rotary shearing to cut the alloy copper strip. S3. Press the outer circular surface of the opposing cutter head against the outer circular surface of the opposing rigid clamping ring to form a clamping contact area, and clamp the strip formed by cutting between the outer circular surface of the opposing cutter head and the outer circular surface of the opposing rigid clamping ring for synchronous traction output. Under the pressure, the elastic support layer is radially compressed, causing the rigid clamping ring to have a radial clearance of e. This allows the clamping force in the clamping contact area to adaptively adjust with the thickness of the alloy copper strip, ensuring that the clamping force and the slitting resistance change in the same direction. This stabilizes the traction and suppresses flanging and burrs. During the slitting process, the strip is guided and embedded in the guide groove area under the clamping force to provide lateral limiting and guidance for the strip. The present invention has the following beneficial effects: 1. This invention utilizes a transition assembly comprising a rigid support ring, an elastic support layer, and a rigid clamping ring on the cutter shaft. This assembly creates a clamping contact area between the opposing cutter head and the opposing rigid clamping ring near the shearing point P, clamping the strip between the outer surface of the cutter head and the outer surface of the rigid clamping ring to achieve synchronous traction output. Because the clamping contact area is spatially adjacent to the shearing point P (distance L is kept within a small range), the strip is clamped and pulled immediately after shearing separation, shortening the free segment length and the instability time window. This suppresses lateral drift and effective width fluctuations caused by uneven deformation such as flanging, warping, and wavy lines at the moment of cutting, thereby improving the strip width consistency.
[0016] 2. This invention utilizes the elastic support layer in the transition assembly to generate radial compression under opposing pressure, causing the rigid clamping ring to produce a controlled radial clearance amount e relative to the rigid support ring, thereby forming the clamping force of the strip. Since e adaptively adjusts with the strip thickness, it achieves an adaptive match: thicker strips → larger compression → larger clamping force, thinner strips → smaller compression → smaller clamping force. This ensures that the clamping force and slitting resistance change in the same direction: when the slitting resistance of thick materials increases, the clamping traction is automatically enhanced to prevent slippage and deviation; when the slitting resistance of thin materials decreases, the clamping force is automatically reduced to avoid overpressure wrinkling or surface damage. This achieves a unidirectional adaptive match between the clamping force and slitting resistance, improving stable traction and edge quality during the slitting of strips of different thicknesses.
[0017] 3. This invention utilizes the eccentric working state generated by the rigid clamping ring under the radial compression of the elastic support layer, forming a guide groove area circumferentially between the outer surface of the rigid clamping ring and the outer surface of the cutter head, and forming a protruding pressure relief area in the adjacent circumferential region of the guide groove area. During the slitting process, the strip is guided and embedded in the guide groove area under the action of clamping force, realizing the lateral limiting and guiding of the strip's movement path, reducing lateral drift and edge instability at the moment of slitting, thereby helping to reduce the side curvature after slitting and suppress the formation of wavy edges, improving the straightness and edge flatness of the slitting product. When the strip exits from the guide groove area with rotation, the protruding pressure relief area provides pressure relief transition and reduces the risk of scratching and abrasion of the strip edge by the side of the guide structure. At the same time, the effective accommodating depth of the guide groove area can be adaptively adjusted according to the radial clearance amount e, so that the guiding and clamping work together, further improving the stable guiding capability for strips of different thicknesses.
[0018] 4. In this invention, a first annular cutting edge and a second annular cutting edge are respectively formed on the outer periphery of the first and second end faces of the cutter head, constituting a double-edged structure. This allows the cutter head to complete the cutting shape by the boundary of the end face cutting edges during shearing. Compared to a structure where only one side of the cutting edge participates in shearing, double-edged cutting allows the boundary of the strip to be jointly defined by the cutting edges at both ends of the cutter head, making the width of the strip closer to the axial width of the cutter head, and reducing the width deviation caused by edge curling, uneven end faces, or fluctuations in edge morphology. Attached Figure Description
[0019] Figure 1 This is a three-dimensional structural diagram of the slitting device proposed in this invention. Figure 1 .
[0020] Figure 2 This is a three-dimensional structural diagram of the slitting device proposed in this invention. Figure 2 .
[0021] Figure 3 This is a three-dimensional structural diagram of the first and second cutter shafts proposed in this invention.
[0022] Figure 4 This is a three-dimensional structural diagram of the cutter head and transition assembly proposed in this invention.
[0023] Figure 5 for Figure 4 A magnified schematic diagram of the structure at point A in the diagram.
[0024] Figure 6 This is an exploded structural diagram of the cutter head and transition assembly proposed in this invention.
[0025] Figure 7 This is a side view of the cutter head structure proposed in this invention.
[0026] Figure 8 A schematic diagram of the cutter head, transition assembly, and synchronous traction output strip.
[0027] Figure 9 This is a schematic diagram of the front section structure of the slitting device proposed in this invention.
[0028] In the picture: 100. Machine body; 101. Drive shaft; 102. Swing arm; 103. Worm gear; 104. Worm; 105. Locking bolt; 201. First cutter shaft; 202. Second cutter shaft; 203. Gear; 204. Drive motor; 301. Cutter head; 302. Rigid support ring; 303. Elastic support layer; 304. Rigid clamping ring; 305. First annular cutting edge; 306. Second annular cutting edge; 307. Guide groove area; 308. Protruding pressure relief area; 400, strip. Detailed Implementation
[0029] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.
[0030] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.
[0031] For ease of description, this paper refers to the cutting discs 301 on the first cutter shaft 201 and the second cutter shaft 202 that cooperate to cut each other as "opposing cutter discs"; the rotating shearing engagement area formed by the cutting edges of the opposing cutter discs 301 is called "shear point P"; the position closest to shear point P in the clamping contact area formed by the pressing of the outer circular surfaces of the opposing cutter discs 301 and the opposing rigid clamping rings 304 is called "clamping point Q"; the distance between shear point P and clamping point Q along the strip running direction is called L; the controlled radial clearance of the rigid clamping rings 304 relative to the rigid support rings 302 under the radial compression of the elastic support layer 303 is called e, for details refer to Figure 5 , Figure 7 .
[0032] Example 1
[0033] Reference Figures 1-9 A copper strip slitting device for switches and sockets includes a machine body 100 and a first cutter shaft 201 and a second cutter shaft 202 rotatably mounted on the machine body 100. Several cutter assemblies are arranged along the axial direction of the first cutter shaft 201 and the second cutter shaft 202, and each cutter assembly is detachably mounted on the first cutter shaft 201 and the second cutter shaft 202. An adjustment assembly for adjusting the center distance between the first cutter shaft 201 and the second cutter shaft 202 is provided on the machine body 100.
[0034] Each tool assembly includes a tool holder 301 and a transition assembly. (Reference) Figure 4 , Figure 6 The transition assembly includes a rigid support ring 302 coaxially arranged, an elastic support layer 303 disposed on the outer periphery of the rigid support ring 302, and a rigid clamping ring 304 disposed on the outer periphery of the elastic support layer 303. In this embodiment, the rigid support ring 302 is coaxially fixedly connected to the cutter head 301, and the elastic support layer 303 is bonded to both the rigid support ring 302 and the rigid clamping ring 304. The axial width of the rigid support ring 302 is set to H1, and the axial widths of the rigid clamping ring 304 and the cutter head 301 are both H2, with H1 being greater than H2. This limits the axial distance between adjacent cutter heads 301 by the rigid support ring 302, forming a stable opposing insertion gap / cutting slit. Preferably, the axial width difference ΔH = H1 - H2 is set according to the thickness t of the alloy copper strip, for example, ΔH is 0.02 to 0.30 mm, or ΔH ≤ 0.5t.
[0035] like Figure 5 , Figure 6 As shown, the cutter head 301 has a first end face and a second end face facing each other. A first annular cutting edge 305 is formed on the outer periphery of the first end face, and a second annular cutting edge 306 is formed on the outer periphery of the second end face. The first annular cutting edge 305 and / or the second annular cutting edge 306 constitute a cutting edge. Thus, a cutter head 301 has a double-ended annular cutting edge structure, allowing the cutting edges of different end faces to participate in shearing under different assembly directions; see reference. Figure 8 The 400 strip boundary is formed by the end face cutting edge.
[0036] like Figure 3 , Figure 4 As shown, when the tool assemblies are arranged along the tool shaft axis, a transition assembly is provided between two adjacent tool discs 301, so that the tool discs 301 and the rigid clamping rings 304 are arranged alternately. The tool discs 301 on the first tool shaft 201 and the tool discs 301 on the second tool shaft 202 are arranged alternately, so that the slitting edges of the opposing tool discs 301 form a rotary shearing engagement zone to slit the alloy copper strip. (Refer to...) Figure 5 The rotational shearing mating zone forms the shearing point P.
[0037] During the slitting operation, the outer surface of the opposing cutter head 301 presses against the outer surface of the opposing rigid clamping ring 304 to form a clamping contact area; Reference Figure 5 The clamping point Q is the position closest to the shearing point P in the clamping contact area. The strip 400 formed by slitting is clamped between the outer surface of the opposing cutter head 301 and the outer surface of the opposing rigid clamping ring 304, and is synchronously pulled and output with the rotation of the cutter shaft in the clamping state. That is, after the strip 400 completes the shearing separation, it can enter the clamping and pulling state within a short distance, thereby reducing the tendency of lateral drift and edge instability at the moment of slitting.
[0038] Further, refer to Figure 7 Under the pressing force of the opposing cutter head 301 and the opposing rigid clamping ring 304, the elastic support layer 303 undergoes radial compression, causing the rigid clamping ring 304 to generate a controlled radial clearance e relative to the rigid support ring 302, thereby forming the clamping force of the strip 400. The clamping gap in the clamping contact area is determined by the structural dimensions of the transition assembly and the radial clearance e. When the thickness of the alloy copper strip fluctuates, the compression of the elastic support layer 303 changes accordingly, so that the clamping force and clamping gap automatically adapt to the thickness change, ensuring the continuity and stability of the traction of the strip 400.
[0039] In this embodiment, reference Figure 7The distance L between the shearing point P and the clamping point Q along the strip's running direction is determined by the change in radial clearance e. This causes the clamping point Q in the clamping contact area to move slightly circumferentially / spatially, resulting in a slight change in L. The distance L adapts adaptively with the radial clearance e, allowing alloy copper strips of different thicknesses to be clamped and pulled within a short distance after shearing and separation. Because the strip 400 is clamped and pulled near the shearing zone, the impact of winding deviation or tension fluctuations on the slitting zone is reduced, mitigating problems such as effective width fluctuations, edge curling, and slight serpentine offset.
[0040] In this embodiment, the axial width of the cutter head 301 can be designed to be consistent with the nominal width of the corresponding strip 400. By configuring cutter heads 301 with different axial widths on the first cutter shaft 201 and / or the second cutter shaft 202, strips 400 of various widths can be cut at one time on the same alloy copper strip, thereby realizing the simultaneous cutting of strips 400 of different specifications, or the segmented cutting along the width direction of the strip, to meet the production needs of multi-specification strips.
[0041] Example 2
[0042] like Figures 4-7 As shown, based on Embodiment 1, this embodiment further utilizes the eccentric working contour of the rigid clamping ring 304 to form a guide groove area 307 and a protruding pressure relief area 308, so as to enhance the lateral limiting guidance of the edge of the strip 400 and reduce the risk of edge scratches and abrasions when the strip 400 exits the guide area.
[0043] Specifically, when the rigid clamping ring 304 generates a radial clearance amount e under the radial compression of the elastic support layer 303, the outer working contour of the rigid clamping ring 304 forms an eccentric state relative to the outer contour of the cutter head 301, causing a guide groove area 307 to be formed circumferentially between the outer surface of the rigid clamping ring 304 and the outer surface of the cutter head 301. Under the action of clamping force, the edge of the strip 400 enters the guide groove area 307 to obtain lateral limiting guidance; a protruding pressure relief area 308 is formed in the circumferential region adjacent to the guide groove area 307.
[0044] In this embodiment, reference Figure 7 The guide groove area 307 is not a fixed, full-circumference "deep groove," but rather a "groove accommodating area" formed locally in the circumferential direction due to the eccentric working state. The protruding pressure relief area 308 is a circumferential region adjacent to the guide groove area 307, and its contour has a protruding / pressure relief transition shape relative to the cutter head 301. When the strip 400 retracts from the guide groove area 307 with rotation, the protruding pressure relief area 308 provides a pressure relief transition, reducing the relative slippage between the edge of the strip 400 and the side of the guide structure, thereby reducing the risk of scratches, abrasions, or edge damage.
[0045] Furthermore, when the thickness of the alloy copper strip changes, the radial clearance amount e causes an adaptive change in the embedding depth of the strip 400 into the guide groove area 307. This results in the clamping force of the clamping contact area on the strip 400 increasing with the thickness of the alloy copper strip and decreasing with the thickness of the alloy copper strip, so that the clamping force is consistent with the direction of change of the slitting resistance during the slitting process. This allows for enhanced clamping traction to reduce the risk of slippage and deviation when the slitting resistance of thick materials is greater; and reduced clamping to reduce the risk of overpressure wrinkling or surface damage when the slitting resistance of thin materials is smaller.
[0046] It should be noted that the circumferential distribution range (e.g., circumferential angle range or circumferential arc length range) of the guide groove area 307 and the protruding pressure relief area 308 can be jointly determined by the relationship between the outer diameters of the rigid clamping ring 304 and the cutter head 301, as well as the eccentric working state of the rigid clamping ring 304. In a preferred state, the outer diameter of the rigid clamping ring 304 is equal to the outer diameter of the cutter head 301, at which point the guide groove area 307 and the protruding pressure relief area 308 form a relatively balanced circumferential distribution. Further, when the outer diameter of the rigid clamping ring 304 increases relatively, under the same eccentric working state, the circumferential range of the protruding pressure relief area 308 increases relatively, while the circumferential range of the guide groove area 307 decreases relatively; or, when the radial clearance e decreases, the eccentricity of the rigid clamping ring 304 decreases, causing the circumferential range of the protruding pressure relief area 308 to increase relatively, while the circumferential range of the guide groove area 307 decreases relatively. By matching the outer diameter and radial clearance e as described above, the pressure relief transition process when the strip 400 exits the guide groove area 307 can be optimized while satisfying the lateral limiting guidance, thereby reducing the risk of scratching and abrasion on the edge of the strip 400.
[0047] Example 3
[0048] like Figure 2 , Figure 3 As shown, based on Embodiment 1 or Embodiment 2, the adjustment assembly includes a drive shaft 101 rotatably mounted within the machine body 100. A swing arm 102 is fixedly mounted on the surface of the drive shaft 101, and the first cutter shaft 201 is rotatably connected to the swing arm 102. A worm gear 103 is fixedly mounted at the end of the drive shaft 101, and a worm 104 meshing with the worm gear 103 is rotatably mounted on the side of the machine body 100. By rotating the worm 104, the worm gear 103 and the drive shaft 101 are driven to rotate, thereby driving the swing arm 102 to swing, changing the position of the first cutter shaft 201 relative to the second cutter shaft 202, and realizing the center distance adjustment. A locking bolt 105 is threaded on the upper side of the machine body 100 to abut against the swing arm 102 for locking and positioning after adjustment, preventing center distance drift caused by working vibration.
[0049] Gears 203 are fixedly mounted on the surfaces of both the first cutter shaft 201 and the second cutter shaft 202. The two gears 203 mesh to drive the two cutter shafts to rotate synchronously and maintain stable phase engagement. A drive motor 204 is installed inside the machine body 100. The drive motor 204 drives the second cutter shaft 202 to rotate through a sprocket and chain drive. The second cutter shaft 202 then drives the first cutter shaft 201 to rotate synchronously through the meshing of the gears 203.
[0050] Example 4
[0051] like Figure 9 As shown, using the alloy copper strip slitting equipment described in Example 1, Example 2, or Example 3, an alloy copper strip slitting method includes the following steps: S1. Introduce the alloy copper strip between the first cutter shaft 201 and the second cutter shaft 202; S2. Drive the first cutter shaft 201 and the second cutter shaft 202 to rotate relative to each other, so that the first annular cutting edge 305 and / or the second annular cutting edge 306 of the opposing cutter disc 301 form a rotary shearing engagement area and constitute a shearing point P, and perform rotary shearing to cut the alloy copper strip. S3. The outer surface of the opposing cutter head 301 is pressed against the outer surface of the opposing rigid clamping ring 304 to form a clamping contact area, and the strip 400 formed by slitting is clamped between the outer surface of the opposing cutter head 301 and the outer surface of the opposing rigid clamping ring 304 for synchronous traction output; wherein, under the action of the pressing force, the elastic support layer 303 is radially compressed, causing the rigid clamping ring 304 to generate a radial clearance amount e, thereby making the clamping force of the clamping contact area adaptively adjusted with the thickness of the alloy copper strip, so that the clamping force and the slitting resistance change in the same direction, so as to stabilize traction and suppress flanging and burrs.
[0052] Furthermore, during the slitting process, the strip 400 is guided and embedded into the guide groove area 307 under the action of clamping force to provide lateral limiting and guiding for the strip 400. When using the structure described in Embodiment 2, refer to Figure 8 This allows the strip 400 at different positions to output and rewind in different directions. The strip 400 can obtain a pressure relief transition at the protruding pressure relief area 308, reducing the risk of edge scratches and abrasions when exiting the guide groove area 307.
[0053] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.
Claims
1. A copper strip slitting device for switches and sockets, comprising a machine body (100), a first cutter shaft (201) and a second cutter shaft (202) rotatably mounted on the machine body (100), and a plurality of cutter assemblies arranged axially along the first cutter shaft (201) and the second cutter shaft (202), characterized in that: Each of the aforementioned tool assemblies includes a tool head (301) and a transition assembly, the transition assembly including a rigid support ring (302) coaxially arranged, an elastic support layer (303) disposed on the outer periphery of the rigid support ring (302), and a rigid clamping ring (304) disposed on the outer periphery of the elastic support layer (303). The cutter head (301) has a first end face and a second end face, a first annular cutting edge (305) is formed on the outer periphery of the first end face, and a second annular cutting edge (306) is formed on the outer periphery of the second end face, the first annular cutting edge (305) and / or the second annular cutting edge (306) constitute a cutting blade; Several of the aforementioned tool assemblies are detachably mounted on the first tool shaft (201) and the second tool shaft (202), and a transition assembly is provided between two adjacent tool discs (301); During slitting, the cutter discs (301) on the first cutter shaft (201) and the cutter discs (301) on the second cutter shaft (202) are arranged alternately, so that the slitting blades of the opposing cutter discs (301) form a rotating shearing engagement area to slit the alloy copper strip. The rotating shearing engagement area forms the shearing point P. At the same time, the outer circular surface of the opposing cutter disc (301) presses against the outer circular surface of the opposing rigid clamping ring (304) to form a clamping contact area. The position closest to the shearing point P in the clamping contact area is the clamping point Q. The strip (400) formed by slitting is clamped between the outer circular surface of the opposing cutter disc (301) and the outer circular surface of the opposing rigid clamping ring (304) and is synchronously pulled out as the cutter shaft rotates in the clamping state.
2. The alloy copper strip slitting equipment for switches and sockets according to claim 1, characterized in that: Under the pressure, the elastic support layer (303) generates radial compression, causing the rigid clamping ring (304) to generate a controlled radial clearance e relative to the rigid support ring (302) to form a clamping force of the strip (400); and the clamping gap of the clamping contact area is determined by the structural dimensions of the transition assembly and the radial clearance e.
3. The alloy copper strip slitting equipment for switches and sockets according to claim 2, characterized in that: The distance L between the shearing point P and the clamping point Q along the running direction of the strip is adaptively changed with the radial clearance amount e, so that the alloy copper strips of different thickness ranges are clamped and pulled within a short distance after shearing and separation.
4. The alloy copper strip slitting equipment for switches and sockets according to claim 2, characterized in that: When the rigid clamping ring (304) generates a radial clearance e, the outer working contour of the rigid clamping ring (304) forms an eccentric state relative to the outer contour of the cutter head (301), so that a guide groove area (307) is formed circumferentially between the outer surface of the rigid clamping ring (304) and the outer surface of the cutter head (301); the edge of the strip (400) enters the guide groove area (307) under the action of clamping force to obtain lateral limiting guidance; the circumferential area adjacent to the guide groove area (307) forms a protruding pressure relief area (308). Furthermore, when the thickness of the alloy copper strip changes, the radial clearance amount e causes the embedding depth of the strip (400) in the guide groove area (307) to change adaptively, so that the clamping force of the clamping contact area on the strip (400) increases with the increase of the alloy copper strip thickness and decreases with the decrease of the alloy copper strip thickness, so that the clamping force is consistent with the direction of change of the cutting resistance during the cutting process.
5. The alloy copper strip slitting equipment for switches and sockets according to claim 1, characterized in that: The rigid support ring (302) is coaxially and fixedly connected to the cutter head (301), and the elastic support layer (303) is bonded to the rigid support ring (302) and the rigid clamping ring (304) respectively.
6. The alloy copper strip slitting equipment for switches and sockets according to claim 1, characterized in that: The machine body (100) is provided with an adjustment assembly for adjusting the center distance between the first cutter shaft (201) and the second cutter shaft (202). The adjustment assembly includes a transmission shaft (101) rotatably installed inside the machine body (100). A swing arm (102) is fixedly installed on the surface of the transmission shaft (101). The first cutter shaft (201) is rotatably connected to the swing arm (102). A worm gear (103) is fixedly installed at the end of the transmission shaft (101). A worm (104) that meshes with the worm gear (103) is rotatably installed on the side of the machine body (100). A locking bolt (105) that abuts against the swing arm (102) is threaded on the upper side of the machine body (100).
7. The alloy copper strip slitting equipment for switches and sockets according to claim 1, characterized in that: Gears (203) are fixedly installed on the surfaces of the first cutter shaft (201) and the second cutter shaft (202). The two gears (203) mesh and drive each other. A drive motor (204) is provided inside the machine body (100). The drive motor (204) drives the second cutter shaft (202) to rotate through the sprocket and chain drive, and drives the first cutter shaft (201) to rotate synchronously through the meshing of the gears (203).
8. The alloy copper strip slitting equipment for switches and sockets according to claim 1, characterized in that: The axial width of the cutter head (301) is the same as the width of the strip (400), so that strips (400) of different specifications can be cut simultaneously by configuring cutter heads (301) with different axial widths.
9. A method for slitting alloy copper strip using the slitting equipment described in any one of claims 1 to 8, characterized in that, include: S1. Introduce the alloy copper strip between the first cutter shaft (201) and the second cutter shaft (202); S2. Drive the first cutter shaft (201) and the second cutter shaft (202) to rotate relative to each other, so that the first annular edge (305) and / or the second annular edge (306) of the opposing cutter disc (301) form a rotary shearing engagement area and constitute a shearing point P, and perform rotary shearing to cut the alloy copper strip. S3. Press the outer surface of the opposing cutter head (301) against the outer surface of the opposing rigid clamping ring (304) to form a clamping contact area, and clamp the strip (400) formed by cutting between the outer surface of the opposing cutter head (301) and the outer surface of the opposing rigid clamping ring (304) for synchronous traction output. Under the action of the pressing force, the elastic support layer (303) is radially compressed, causing the rigid clamping ring (304) to generate a radial clearance amount e, thereby making the clamping force of the clamping contact area adaptively adjusted with the thickness of the alloy copper strip, so that the clamping force and the cutting resistance change in the same direction, so as to stabilize the traction and suppress the flanging and burrs.
10. The method for slitting alloy copper strips according to claim 9, characterized in that, During the slitting process, the strip (400) is guided and embedded in the guide groove area (307) under the action of clamping force to provide lateral limiting and guidance for the strip (400).