A continuous stamping die

Abstract

The utility model discloses a continuous punch die, include: first punch subassembly, including fixed first punch head, second punch subassembly, including fixed plate and movable plate, movable plate is provided with second punch head and third punch head, and the fixed plate can slide relative between movable plate, power component, set up in one side of second punch subassembly, and power component are driven to be connected with movable plate, wherein, when power component is in the state of stretching out, movable plate drives fixed plate to move to the direction of far away from the direction of movement of pressure cavity, when power component is in the state of retraction, movable plate drives fixed plate to move to the direction of pressure cavity. Can simplify equipment structure, reduce manufacturing cost.

Description

Technical Field

[0001] This utility model relates to the field of metal processing equipment technology, and in particular to a continuous stamping die. Background Technology

[0002] Continuous stamping dies are high-efficiency production equipment that can complete multiple stamping processes sequentially within a die, and are widely used in manufacturing industries such as electronics, automobiles, and hardware. Traditional multi-process stamping usually requires multiple machines or multiple independent die units to complete the process, which has problems such as frequent material transfer, large cumulative positioning errors, low production efficiency, and large equipment footprint.

[0003] In the present technology, progressive dies that integrate multiple stamping stations into one unit have emerged. However, when these dies perform complex actions, the driving and guiding structures of their internal moving parts are often quite complex. For example, to achieve the alternating or sequential action of different stamping heads, it is often necessary to configure an independent power source (such as multiple cylinders) and a complex linkage mechanism for each moving unit. This not only increases the design and manufacturing cost of the die, but also results in a bulky die structure, numerous potential failure points, and high requirements for the synchronous control precision between multiple power sources, making maintenance difficult. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a continuous stamping die that simplifies the equipment structure and reduces manufacturing costs.

[0005] A continuous stamping die according to a first aspect of the present invention includes: a first stamping assembly, including a fixed first stamping head; The second stamping assembly includes a fixed plate and a movable plate, the movable plate being provided with a second stamping head and a third stamping head, and the fixed plate and the movable plate being able to slide relative to each other; A power assembly is disposed on one side of the second stamping assembly, and the power assembly is drivenly connected to the movable plate; Specifically, when the power component is in the extended state, the movable plate drives the fixed plate to move away from the pressing cavity; when the power component is in the retracted state, the movable plate drives the fixed plate to move towards the pressing cavity.

[0006] According to an embodiment of this utility model, a continuous stamping die has at least the following beneficial effects: By integrating the second and third stamping heads onto the same movable plate and driving them with a single power component, continuous and coordinated operation of multiple stamping processes within the die is achieved. This compact and reasonable layout effectively avoids problems such as long production cycle times and large cumulative positioning errors caused by traditional multiple devices or complex transmission mechanisms, significantly improving the efficiency and accuracy of stamping production. The use of a single power component to directly drive the movable plate, and the indirect control of the fixed plate's movement through the unique cooperation between the movable and fixed plates, eliminates the complex scheme of configuring an independent power source for each motion unit, simplifies the overall structure and control system of the die, reduces manufacturing costs and energy consumption, and improves the synchronization and reliability of equipment operation. The relative sliding cooperation between the movable and fixed plates, combined with precise control of the extension and retraction states of the power component, ensures stable and controllable relative movement between the second and third stamping heads and the first stamping head. This design guarantees the accuracy and repeatability of the actions of each stamping head during die closing and opening, thereby ensuring the consistency of product stamping quality.

[0007] According to some embodiments of the present invention, the upper end surface of the movable plate is provided with a first guide surface, and the lower end surface of the fixed plate is provided with a second guide surface that cooperates with the first guide surface; when the movable plate moves, the fixed plate is driven to move relative to the movable plate through the cooperation of the first guide surface and the second guide surface.

[0008] According to some embodiments of the present invention, the first guide surface includes a concave portion and a first platform portion, and the second guide surface includes a convex portion and a second platform portion; when the power component is in a retracted state, the concave portion and the convex portion are engaged with each other, and the first platform portion and the second platform portion are engaged with each other; when the power component is in an extended state, the first platform portion and the second platform portion abut against each other, and the convex portion and the concave portion are misaligned with each other.

[0009] According to some embodiments of the present invention, the junction of the first platform portion and the concave portion is provided with an arc transition treatment, and the junction of the second platform portion and the convex portion is provided with an arc transition treatment.

[0010] According to some embodiments of the present invention, there are multiple recessed portions and first platform portions, which are arranged alternately at intervals along the extension direction of the first guide surface; there are multiple convex portions and second platform portions, which are arranged alternately at intervals along the extension direction of the second guide surface.

[0011] According to some embodiments of this utility model, the fixed plate is provided with a through guide hole, and the movable plate is provided with a guide post; the guide post passes through the guide hole, and the guide hole and the guide post cooperate to limit the movement direction of the fixed plate.

[0012] According to some embodiments of this utility model, the number of guide holes is four, and the number and position of the guide posts are adapted to the guide holes.

[0013] According to some embodiments of this utility model, the diameter of the guide hole is three to four times the outer diameter of the guide post.

[0014] According to some embodiments of the present invention, the guide post is a guide screw, and the guide screw passes through the guide hole.

[0015] According to some embodiments of this utility model, the power component is any one of an electric cylinder, a pneumatic cylinder, or a hydraulic cylinder.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is a schematic diagram of a continuous stamping die according to an embodiment of the present utility model; Figure 2 This is an embodiment of the present utility model. Figure 1 Enlarged view of point A in the middle; Figure 3 This is a schematic diagram of the power assembly in the retracted state according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the power component in the extended state according to an embodiment of the present utility model; Figure 5 This is a schematic diagram of the fixing plate according to an embodiment of the present utility model.

[0018] Reference numerals: First stamping assembly 100; Second stamping assembly 110; First stamping head 120; Second stamping head 130; Third stamping head 140; Fixed plate 150; Movable plate 160; Power assembly 170; Guide column 180; Recessed portion 190; First platform portion 200; Outer protrusion portion 210; Second platform portion 220. Detailed Implementation

[0019] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0020] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying 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 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 utility model.

[0021] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0022] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly. Those skilled in the art can reasonably determine the specific meaning of these terms in this utility model based on the specific content of the technical solution. In the description of this utility model, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples. In the description of this specification, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0023] Reference Figures 1 to 5A continuous stamping die includes: a first stamping assembly 100, including a fixed first stamping head 120; The second stamping assembly 110 includes a fixed plate 150 and a movable plate 160. The movable plate 160 is provided with a second stamping head 130 and a third stamping head 140. The fixed plate 150 and the movable plate 160 can slide relative to each other. The power assembly 170 is located on one side of the second stamping assembly 110, and the power assembly 170 is drivenly connected to the movable plate 160. When the power assembly 170 is in the extended state, the movable plate 160 drives the fixed plate 150 to move away from the pressing cavity. When the power assembly 170 is in the retracted state, the movable plate 160 drives the fixed plate 150 to move towards the pressing cavity.

[0024] In the initial state, the power component 170 is in a retracted state, driving the movable plate 160 and its second stamping head 130 and third stamping head 140 to move toward the pressing cavity together until the stamping operation is completed.

[0025] When mold opening is required, the power assembly 170 is switched to the extended state, driving the movable plate 160 to move away from the pressing cavity. During this process, the movable plate 160, through the mating structure between itself and the fixed plate 150 (e.g., a guide ramp or cam structure provided on the contact surface of the two), drives the fixed plate 150 to move together away from the pressing cavity, thereby realizing the separation of the second punch head 130, the third punch head 140 and the workpiece.

[0026] When mold closing is required again, the power unit 170 switches to a retracted state, directly pulling the movable plate 160 toward the pressing cavity. While resetting, the movable plate 160, through its cooperation with the fixed plate 150, drives the fixed plate 150 to move toward the pressing cavity together, so that the second and third stamping heads 140 can perform the next stamping process.

[0027] Throughout the entire work cycle, the fixed first stamping head 120 cooperates with the moving second and third stamping heads 140 to continuously process the workpiece in multiple stages within the pressing cavity. The relative sliding and linkage mechanism between the movable plate 160 and the fixed plate 150 is the core of enabling multiple stamping heads to be precisely driven by a single power source.

[0028] By integrating the second and third stamping heads 140 onto the same movable plate 160 and driving them with a single power unit 170, continuous and coordinated operation of multiple stamping processes within the mold is achieved. This compact and rational layout effectively avoids the problems of long production cycle time and large cumulative positioning errors caused by traditional multiple devices or complex transmission mechanisms, significantly improving the efficiency and precision of stamping production. A single power component 170 directly drives the movable plate 160, and through the unique cooperation between the movable plate 160 and the fixed plate 150, the movement of the fixed plate 150 is indirectly controlled. This design eliminates the complex scheme of configuring an independent power source for each motion unit, simplifying the overall structure and control system of the mold, reducing manufacturing costs and energy consumption, while improving the synchronization and reliability of equipment operation. The relative sliding cooperation between the movable plate 160 and the fixed plate 150, combined with the precise control of the extension and retraction states of the power component 170, ensures stable and controllable relative movement between the second and third stamping heads 140 and the first stamping head 120. This design guarantees the accuracy and repeatability of the actions of each stamping head during mold closing and opening, thereby ensuring the consistency of product stamping quality.

[0029] The upper end face of the movable plate 160 is provided with a first guide surface, and the lower end face of the fixed plate 150 is provided with a second guide surface that cooperates with the first guide surface. When the movable plate 160 moves, the fixed plate 150 is driven to move relative to the movable plate 160 through the cooperation of the first guide surface and the second guide surface.

[0030] When the movable plate 160 begins to move horizontally under the drive of the power assembly 170, the first guide surface on the upper end face of the movable plate 160 is displaced accordingly. During the movement, the first guide surface comes into contact with the second guide surface on the lower end face of the fixed plate 150. Since the two guide surfaces are specially shaped surfaces that cooperate with each other, the first guide surface exerts a squeezing, pushing, or sliding effect on the second guide surface, thereby converting and transmitting the main movement (usually horizontal) of the movable plate 160 to the fixed plate 150, driving the fixed plate 150 to produce a vertical movement relative to the movable plate 160.

[0031] Through two precisely matched guide surfaces, the single-direction drive input from the power component 170 is reliably converted into a composite motion with a specific trajectory required by the fixed plate 150, without the need for an additional drive source, achieving precise decomposition and synthesis of motion. By eliminating complex linkages, gears, or cam-driven mechanisms, complex motion output can be achieved solely through the machined surfaces on the two plates, greatly simplifying the internal structure of the mold and reducing the difficulty and cost of machining and assembly.

[0032] The first guide surface includes a concave portion 190 and a first platform portion 200, and the second guide surface includes a convex portion 210 and a second platform portion 220. When the power assembly 170 is in the retracted state, the concave portion 190 and the convex portion 210 are engaged with each other, and the first platform portion 200 and the second platform portion 220 are engaged with each other. When the power assembly 170 is in the extended state, the first platform portion 200 and the second platform portion 220 abut against each other, and the convex portion 210 and the concave portion 190 are misaligned.

[0033] When the power assembly 170 is in the retracted state, the movable plate 160 drives the first guide surface to move towards the fixed plate 150. At this time, the concave portion 190 of the first guide surface and the convex portion 210 of the second guide surface engage with each other, and simultaneously, the first platform portion 200 and the second platform portion 220 are also fully aligned and engaged with each other. In this state, the large-area contact between the two platform portions forms a stable load-bearing interface, like a temporary "lock," effectively limiting the relative displacement between the fixed plate 150 and the movable plate 160 in the horizontal direction, temporarily fixing them into a whole, and cooperating to perform the stamping operation, providing solid support for the stamping process. When the power assembly 170 switches to the extended state and drives the movable plate 160 to move in the opposite direction, the first guide surface disengages accordingly. In the initial stage, the first platform portion 200 and the second platform portion 220 remain in contact and abut against each other, and the pushing force between the platform portions is the main force driving the fixed plate 150 to move together with the movable plate 160. As the movable plate 160 continues to move, the outward protrusion 210 completely disengages from the inward concave portion 190, and the two become misaligned. During this process, the top contact of the platform portion ensures a smooth transition and power transmission during the initial stage of motion conversion.

[0034] Through the coordinated design of the concave portion 190, the convex portion 210, and the platform portion, precise positioning and temporary rigid fixation at the stamping position and during reset are achieved. The fitting of the platform portion greatly enhances the rigidity and stability of the mechanism when bearing stamping loads, effectively preventing minor movement during operation and ensuring stamping accuracy.

[0035] The junction of the first platform portion 200 and the concave portion 190 is provided with a rounded transition treatment, and the junction of the second platform portion 220 and the convex portion 210 is provided with a rounded transition treatment.

[0036] During the relative movement of the movable plate 160 and the fixed plate 150, and the transition between engagement and disengagement of the guide surfaces, the convex portion 210 and the concave portion 190 will successively pass through the junction of the first platform portion 200 and the concave portion 190, and the junction of the second platform portion 220 and the convex portion 210. At this time, the provided arc transition treatment acts as a gentle guide surface, allowing the convex portion 210 or the concave portion 190 to smoothly and gradually slide into or out of one area from another, rather than experiencing sharp, abrupt collisions or scrapes, thereby ensuring the smoothness and continuity of the moving parts during critical path transitions.

[0037] The arc transition effectively eliminates the sharp "stress concentration point" at the junction of the platform and the concave-convex part, and changes the local stress generated when the moving parts come into contact from abrupt change to gradual change. This significantly reduces the risk of microcracks and fatigue damage in this area under alternating loads, thereby greatly improving the service life of the guide surface and the entire mold.

[0038] There are multiple recessed portions 190 and first platform portions 200, which are arranged alternately at intervals along the extension direction of the first guide surface; there are multiple convex portions 210 and second platform portions 220, which are arranged alternately at intervals along the extension direction of the second guide surface.

[0039] When the movable plate 160 is driven to move horizontally, the multiple recessed portions 190 and the first platform portion 200 arranged alternately on its first guide surface will interact sequentially with the multiple protruding portions 210 and the second platform portion 220 on the second guide surface of the fixed plate 150. This multi-point, alternating engagement relationship decomposes the relative motion between the movable plate 160 and the fixed plate 150 into multiple continuous and stable cyclic engagement and disengagement processes, ensuring the smoothness of power transmission and the continuity of action during long strokes.

[0040] By alternating the arrangement of multiple concave and convex parts and platform parts, a single large stroke motion is decomposed into multiple small stroke continuous actions, which effectively avoids the skewness and instability that may occur in a single set of guide surfaces during long-distance motion, and ensures the accuracy and reliability of transmission throughout the entire stroke range.

[0041] The fixed plate 150 has a through guide hole, and the movable plate 160 has a guide post 180; the guide post 180 passes through the guide hole, and the guide hole and the guide post 180 cooperate to limit the movement direction of the fixed plate 150.

[0042] When the movable plate 160 is driven to perform a horizontal reciprocating motion, the fixed guide post 180 always passes through the guide hole of the fixed plate 150. When the movable plate 160 drives the fixed plate 150 to produce additional movement relative to the movable plate 160 through its guide surface, a sliding fit is formed between the guide post 180 and the inner wall of the guide hole. The inner wall of the guide hole continuously contacts and slides along the surface of the guide post 180. This fit restricts the degree of freedom of movement of the fixed plate 150 to the direction specified by the axial direction of the guide post 180, thereby precisely guiding the fixed plate 150 to move stably along a preset path.

[0043] The classic mechanical structure of hole-shaft mating provides stable and reliable guiding constraints for the compound motion of the fixed plate 150, effectively limiting its displacement and deflection in unnecessary directions and ensuring the accuracy of the motion trajectory.

[0044] There are four guide holes, and the number and position of the guide pillars 180 are adapted to the guide holes. During mold operation, when the movable plate 160 drives the guide pillars 180 to move relative to the guide holes on the fixed plate 150, the four symmetrically distributed guide holes and guide pillars 180 simultaneously engage in sliding contact. This multi-point hole-shaft engagement works together to form a stable composite guiding constraint, ensuring that the fixed plate 150 can still strictly translate along the preset direction under complex stress conditions, effectively preventing any directional offset or torsional deformation.

[0045] The four-point symmetrical layout forms a stable statically determinate structure, which effectively constrains the fixed plate 150 from multiple directions simultaneously, completely eliminating the deflection torque that may be generated by single-point guidance, and ensuring the high precision of the motion trajectory.

[0046] The diameter of the guide hole is three to four times the outer diameter of the guide post 180. During mold operation, the fixed plate 150 is fitted onto the outside of the guide post 180 through the guide hole. Because the hole diameter is designed to be larger than the post diameter, a specific fitting clearance is formed. When the movable plate 160 drives the fixed plate 150 to move, the fixed plate 150 can move precisely and unimpeded in the vertical direction relative to the fixed guide post 180 using this clearance. The guide post 180 mainly serves to restrict the horizontal degree of freedom and prevent deflection, while the sufficient hole diameter provides the necessary space for the required vertical movement.

[0047] The guide post 180 is a guide screw, which passes through the guide hole. The guide screw has a precise geometric shape and high dimensional accuracy, which can provide more accurate and stable motion trajectory guidance for the fixed plate 150, effectively preventing swaying and shaking during the movement.

[0048] The power unit 170 can be any one of an electric cylinder, a pneumatic cylinder, or a hydraulic cylinder. When an electric cylinder is used, the motor converts the rotary motion into precise linear motion of the piston rod through a lead screw mechanism; when a pneumatic cylinder is used, compressed air drives the piston to perform linear motion; when a hydraulic cylinder is used, hydraulic oil serves as the power medium to complete the drive.

[0049] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A continuous stamping die, characterized in that, include: The first stamping assembly includes a fixed first stamping head; The second stamping assembly includes a fixed plate and a movable plate, the movable plate being provided with a second stamping head and a third stamping head, and the fixed plate and the movable plate being able to slide relative to each other; A power assembly is disposed on one side of the second stamping assembly, and the power assembly is drivenly connected to the movable plate; Specifically, when the power component is in the extended state, the movable plate drives the fixed plate to move away from the pressing cavity; when the power component is in the retracted state, the movable plate drives the fixed plate to move towards the pressing cavity.

2. A continuous stamping die according to claim 1, characterized in that, The upper end face of the movable plate is provided with a first guide surface, and the lower end face of the fixed plate is provided with a second guide surface that cooperates with the first guide surface; when the movable plate moves, the fixed plate is driven to move relative to the movable plate through the cooperation of the first guide surface and the second guide surface.

3. A continuous stamping die according to claim 2, characterized in that, The first guide surface includes a concave portion and a first platform portion, and the second guide surface includes a convex portion and a second platform portion; when the power component is in the retracted state, the concave portion and the convex portion are engaged with each other, and the first platform portion and the second platform portion are engaged with each other; when the power component is in the extended state, the first platform portion and the second platform portion abut against each other, and the convex portion and the concave portion are misaligned with each other.

4. A continuous stamping die according to claim 3, characterized in that, The junction of the first platform portion and the concave portion is provided with a rounded transition, and the junction of the second platform portion and the convex portion is provided with a rounded transition.

5. A continuous stamping die according to claim 3, characterized in that, The number of the recessed portions and the first platform portions is multiple, and they are arranged alternately at intervals along the extension direction of the first guide surface; the number of the convex portions and the second platform portions is multiple, and they are arranged alternately at intervals along the extension direction of the second guide surface.

6. A continuous stamping die according to claim 1, characterized in that, The fixed plate has a through guide hole, and the movable plate has a guide post; the guide post passes through the guide hole, and the guide hole and the guide post cooperate to limit the movement direction of the fixed plate.

7. A continuous stamping die according to claim 6, characterized in that, The number of guide holes is four, and the number and position of the guide posts are adapted to the guide holes.

8. A continuous stamping die according to claim 6, characterized in that, The diameter of the guide hole is three to four times the outer diameter of the guide post.

9. A continuous stamping die according to claim 6, characterized in that, The guide post is a guide screw, which passes through the guide hole.

10. A continuous stamping die according to claim 1, characterized in that, The power unit is any one of an electric cylinder, a pneumatic cylinder, or a hydraulic cylinder.

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