A functional spring mold and stamping system

Abstract

This invention discloses a functional spring sheet mold and stamping system, relating to the field of stamping die technology, for producing spring sheets. It includes an upper and lower backing plate, a pre-stamping die assembly, and a forming stamping die assembly. The pre-stamping die assembly includes matching upper and lower dies, and the forming stamping die assembly includes matching upper and lower dies. Upper dies and upper dies are both mounted on the upper backing plate, and lower dies are both mounted on the lower backing plate. This invention proposes a progressive die, which uses only one press, saving costs, and allows multiple processes to be performed simultaneously, enabling mass production. Limiting components are installed around the die to ensure workpiece quality while reducing the workload of worker calibration.

Description

Technical Field

[0001] This invention belongs to the field of stamping die technology, and specifically relates to a functional spring die and stamping system. Background Technology

[0002] A metal sheet used in high-precision instruments and equipment, characterized by its thinness and elasticity, is typically made of spring steel and stainless steel through stamping. Its main function is to store and release energy through twisting or bending under external force, thereby reducing damage to the internal structure of the product.

[0003] Currently, most springs are single-mold, with each process producing one feature. However, when the required product features are numerous and complex, more punch presses and processes are needed, resulting in high costs and difficulty in mass production. Summary of the Invention

[0004] In view of the problems mentioned in the background art, the purpose of the present invention is to provide a functional spring mold and stamping system to solve the problems mentioned in the background art.

[0005] The above-mentioned technical objective of the present invention is achieved through the following technical solution:

[0006] A functional spring includes a spring with equal thicknesses and symmetrical about a central axis in the length direction. The middle part of the spring has a smooth tip formed by two sets of symmetrical arcs. The tip extends into an arc edge, and the end of the arc edge is a rounded edge. The connection between the tip and the rounded edge and the arc edge is smooth and flat.

[0007] A functional spring sheet mold for producing spring sheets includes an upper pad and a lower pad, and also includes a pre-stamping die and a forming stamping die. The pre-stamping die includes a matching upper die and a matching lower die, and the forming stamping die includes a matching upper die and a matching lower die. The upper die and the upper die are both mounted on the upper pad, and the lower die and the lower die are both mounted on the lower pad.

[0008] As a preferred technical solution, the bottom of the upper die 2 is lower than the upper die 1, or the top of the lower die 2 is higher than the lower die 1.

[0009] As a preferred technical solution, the bottom end of the upper die is provided with an arc-shaped pressing edge II for pressing out a pointed top, an arc-shaped pressing edge I for pressing out an arc-shaped edge, and a straight pressing edge on both sides of the central axis. Both the arc-shaped pressing edge II and the arc-shaped pressing edge I are concave upwards. The top end of the lower die is provided with an arc-shaped top edge II that matches the arc-shaped pressing edge II and an arc-shaped top edge I that matches the arc-shaped pressing edge I on both sides of the central axis.

[0010] As a preferred technical solution, the lower die is equipped with liftable side baffles on both the left and right sides. An elastic element is installed between the side baffles and the lower pad to restore the side baffles to their original position. When the upper die is pressed down, the side baffles are pressed down on both sides of the upper die, and the elastic element is compressed.

[0011] As a preferred technical solution, the distance between the inner walls of the two sets of side baffles is equal to the length of the original blank of the spring sheet, and the distance between the two sets of straight pressing edges is less than the distance between the inner walls of the two sets of side baffles.

[0012] As a preferred technical solution, the bottom end of the upper die is provided with a forming edge two that is concave downward and has the same curvature as the pointed arc, and a forming edge one that has the same shape as the arc edge, respectively, and limit plates two are installed on both sides of the upper die.

[0013] As a preferred technical solution, the top of the second lower die is provided with a forming top edge matching the second forming edge and a forming top edge matching the first forming edge, respectively, on both sides of the central axis. The second lower die is provided with an arc-shaped concave edge that is recessed into the middle of the second lower die from the end of the forming top edge. The second lower die is installed on an auxiliary component that assists in the lifting and lowering of the second lower die.

[0014] As a preferred technical solution, forming side plates are installed on both the left and right sides of the lower mold. The top of the forming side plate near the lower mold has an arc-shaped concave edge 2. The concave edge 1 and the concave edge 2 have the same radius. When the lower mold is at its lowest point, the center of the concave edge 1 and the concave edge 2 on the same side coincide.

[0015] As a preferred technical solution, a stamping system for a functional spring mold includes a press and an upper mold base and a lower mold base arranged opposite to each other. An upper pad is installed on the upper mold base and a lower pad is installed on the lower mold base. The upper mold base and the lower mold base are respectively equipped with multiple sets of upper guide rods and multiple sets of lower guide rods, and the upper guide rods and lower guide rods are matched one-to-one. The upper mold base is installed on the output end of the press.

[0016] Beneficial effects

[0017] This invention proposes a progressive die that uses only one punch press to save costs, and allows multiple processes to be carried out simultaneously, enabling mass production. Limiting components are installed around the die to ensure workpiece quality while reducing the burden of calibration for workers.

[0018] Additional aspects and advantages of the 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

[0019] Figure 1 This is a three-dimensional structural diagram of a stamping system for a functional spring mold proposed in this invention;

[0020] Figure 2This is a left view of a stamping system for a functional spring die proposed in this invention;

[0021] Figure 3 for Figure 2 A cross-sectional view along the AA direction;

[0022] Figure 4 This is a three-dimensional structural diagram of a functional spring mold proposed in this invention.

[0023] Reference numerals: 1. Upper mold base; 2. Lower mold base; 3. Upper guide rod; 4. Lower guide rod; 5. Upper pad 1; 6. Lower pad 1; 7. Upper pad 2; 8. Lower pad 2; 9. Upper die 1; 91. Arc-shaped pressing edge 1; 92. Arc-shaped pressing edge 2; 93. Straight pressing edge; 10. Lower die 1; 101. Arc-shaped top edge 1; 102. Arc-shaped top edge 2; 11. Upper die 2; 111. Forming pressing edge 1; 112. Forming pressing edge 2; 12. Lower die 2; 121. Forming top edge 1; 122. 1. Top edge forming two; 123. Concave edge one; 124. Rolled edge mold; 1241. Side plate forming; 1242. Concave edge two; 13. Spring sheet; 131. Arc edge; 132. Pointed top; 133. Rolled edge; 14. Limiting component one; 141. Limiting plate one; 15. Side baffle; 151. Side baffle; 152. Lifting groove one; 153. Elastic component one; 16. Limiting component two; 161. Limiting plate two; 17. Auxiliary component; 171. Lifting groove two; 172. Elastic component two; 173. Lifting rod. Detailed Implementation

[0024] Embodiments of the present invention are described in detail below. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar symbols 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 the present invention, and should not be construed as limiting the present invention.

[0025] Example 1

[0026] refer to Figure 4 The functional spring in this embodiment includes a spring 13, which is a smooth, thin metal paddle. The spring 13 has equal thicknesses and is symmetrical about the central axis in the length direction. The middle part of the spring 13 is a symmetrical pointed tip 132, which is composed of two sets of symmetrical arcs. The end of the pointed tip 132 extends into an arc edge 131, and the end of the arc edge 131 is a rounded edge 133. The radius of the arc of the pointed tip 132 is much smaller than that of the arc edge 131.

[0027] Preferably, the spring piece 13 is made of spring steel or stainless steel.

[0028] This functional spring is a thin and flexible metal sheet that can be used in high-precision instruments and equipment. Its main function is to store and release energy by twisting or bending under external force, thereby reducing damage to the internal structure of the product.

[0029] Example 2

[0030] refer to Figures 1-3 The functional spring mold described in this embodiment includes an upper pad, a lower pad, a pre-stamping die, and a forming stamping die. The pre-stamping die presses out arc-shaped edges 131 and pointed tops 132 on both sides of the flat blank, and the forming stamping die stamps out rolled edges 133.

[0031] Preferably, the upper pad includes upper pad 5 and upper pad 7, and the lower pad includes lower pad 6 and lower pad 8.

[0032] The pre-stamping die is installed between the upper pad 5 and the lower pad 6, and the forming stamping die is installed between the upper pad 7 and the lower pad 8.

[0033] The pre-stamping die assembly includes an upper die 9 and a lower die 10. The working ends of the upper die 9 and the lower die 10 are opposite each other. When the upper die 9 descends, the upper die 9 and the lower die 10 come into contact.

[0034] The upper die 9 is installed on the upper pad 5, and the lower die 10 is installed on the lower pad 6. The bottom end of the upper die 9 is provided with arc-shaped edge 2 92, arc-shaped edge 1 91 and straight edge 93 on both sides from the central axis. Both arc-shaped edge 2 92 and arc-shaped edge 1 91 are concave upwards. The tops of the two sets of arc-shaped edge 2 92 are smoothly connected. The radius of arc-shaped edge 2 92 is much smaller than that of arc-shaped edge 1 91. The junction of arc-shaped edge 2 92 and straight edge 93 with arc-shaped edge 1 91 is a smooth arc surface.

[0035] The distance between the two sets of straight edge pressing 93 is less than the length of the original blank of spring sheet 13.

[0036] The lower die 10 is mounted on the lower pad 6. Limiting components 14 are installed at the front and rear of the lower die 10. Side stops 15 are installed on both sides of the lower die 10. The top of the lower die 10 has two arc-shaped top edges 102 and one arc-shaped top edge 101 arranged sequentially on both sides from the center axis. The tops of the two sets of arc-shaped top edges 102 are smoothly connected, and the distance between the lowest points of the two sets of arc-shaped top edges 101 is the length of the lower die 10. The limiting components 14 include limiting... When the upper mold base 1 is pressed down, the inner wall of the limiting plate 141 rubs against the upper pressing mold 9. The side baffle 15 includes a side baffle 151, a lifting groove 152 and an elastic member 153. The lifting grooves 152 of the two sets of side baffles 15 are respectively opened on the lower pads 6 on both sides of the lower pressing mold 10. The side baffle 151 slides in the lifting groove 152. The elastic member 153 is installed between the inner wall of the bottom end of the lifting groove 152 and the bottom end of the side baffle 151.

[0037] The distance between the inner walls of the two sets of side baffles 151 is equal to the length of the original blank of the spring sheet 13.

[0038] The sum of the length of the lower die 10 and twice the thickness of the blank is equal to the distance between the two sets of straight edge pressings 93.

[0039] The length of the upper die 9 is greater than the distance between the inner walls of the two sets of side baffles 151 and less than the distance between the outer walls of the two sets of side baffles 151. That is, when the upper die 9 is pressed down, the two sides of the upper die 9 contact the two sides of the side baffles 151, and the elastic element 153 is compressed.

[0040] The flat blank is placed on the lower die 10. The limiting plates 141 on both sides limit the blank to prevent it from falling. The side baffles 151 on both sides limit the blank in the length direction to ensure that the stamped spring pieces 13 are symmetrical, thereby ensuring the quality of the spring pieces 13 in batches. Then the upper die 1 presses down, and the upper die 9 pushes the side baffles 151 down until the blank is stamped into shape. The arc-shaped pressing edge 91 and the arc-shaped top edge 101 press out the arc-shaped edge 131 of the spring piece 13. The two sets of arc-shaped pressing edges 92 and the two sets of arc-shaped top edges 102 press out the tip 132 of the spring piece 13. The straight pressing edge 93 presses out the pre-formed blanks for the edge rolling 133 from the two ends of the blank.

[0041] The forming stamping die assembly includes an upper die 11 and a lower die 12. The working ends of the upper die 11 and the lower die 12 are opposite each other. When the upper die holder 1 descends, the upper die 11 and the lower die 12 are engaged.

[0042] The bottom of the upper die 11 is lower than the upper die 9, or the top of the lower die 12 is higher than the lower die 10.

[0043] The upper die 2 11 is installed on the upper pad 2 7. The bottom end of the upper die 2 11 is provided with forming edge 2 112 and forming edge 111 on both sides from the center axis. The forming edge 2 112 and forming edge 111 have the same shape as the arc-shaped edge 2 92 and arc-shaped edge 1 91, respectively. The distance between the lowest points of the two forming edge 111 is the length of the upper die 2 11. Limiting components 2 16 are installed on both sides of the upper die 2 11. The limiting components 2 16 include limiting plate 2 161. The limiting plate 2 161 is installed on the upper pad 2 7. The length of the limiting plate 2 161 is greater than the length of the upper die 2 11.

[0044] The second pressing die 12 is installed on the second lower pad 8. The top of the second pressing die 12 is provided with a forming top edge 121 and a forming top edge 122 on both sides from the center axis. The forming top edge 121 and the forming top edge 122 are the same shape as the arc-shaped top edge 102 and the arc-shaped top edge 101, respectively. The second pressing die 12 below the end of the forming top edge 122 is provided with an arc-shaped concave edge 123 that is recessed into the middle of the second pressing die 12. The distance between the lowest points of the two forming top edges 122 is the length of the second pressing die 12. The second pressing die 12 is installed on the auxiliary part 17. The second pressing die 12 is provided with a curling die 18 on both the left and right sides.

[0045] The auxiliary component 17 includes a second lifting groove 171, a second elastic element 172, and a lifting rod 173. The second lifting groove 171 is opened on the second lower pad 8 directly below the second lower pressing mold 12. The inner wall of the second lifting groove 171 is slidably connected to the lifting rod 173. The second elastic element 172 is vertically installed between the top of the lifting rod 173 and the bottom inner wall of the second lifting groove 171. The second lower pressing mold 12 is installed on the lifting rod 173.

[0046] The hemming die 18 includes a forming side plate 181. The forming side plates 181 of the two sets of hemming dies 18 are respectively installed on both sides of the lower pressing die 12. The top of the forming side plate 181 near the lower pressing die 12 is provided with an arc-shaped concave edge 182. The concave edge 123 and the concave edge 182 have the same radius. When the lower pressing die 12 is at the lowest point, the center of the concave edge 123 and the concave edge 182 on the same side coincide.

[0047] The pre-processed workpiece on the pre-stamping die is placed on the lower die 12, so that the tip 132 of the spring piece 13 is fitted onto the two forming top edges 121, and the arc edge 131 is placed on the forming top edge 122. The reserved rolled edge blank is inserted between the concave edge 123 and the concave edge 182. After it is fixed, the upper die 11 presses down, and the limiting plate 161 prevents the blank from shifting in the front and back direction. The upper die 11 pushes the lower die 12 to descend, so that the concave edge 123 and the concave edge 182 are stamped out to form the rolled edge 133. The processed spring piece 13 can be taken out from the lower die 12. When the upper die 11 rises, the lower die 12 returns to its original position under the action of the elastic element 172.

[0048] Example 3

[0049] refer to Figures 1-3 The stamping system of a functional spring mold described in this embodiment includes a press and an upper mold base 1 and a lower mold base 2 arranged opposite to each other. An upper pad 1 5 and an upper pad 2 7 are both installed on the upper mold base 1. Multiple sets of upper guide rods 3 are also installed on the upper mold base 1. A lower pad 1 6 and a lower pad 2 8 are both installed on the lower mold base 2. Multiple sets of lower guide rods 4 are also installed on the lower mold base 2. The upper guide rods 3 and the lower guide rods 4 are matched one-to-one. The upper mold base 1 is installed on the press.

[0050] The press drives the upper die holder 1 to descend and stamp. The pre-stamping die and the forming die are processed at the same time, which increases production efficiency and facilitates mass production.

[0051] It should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the present 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 the present invention.

[0052] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0053] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0054] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0055] 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 stamping system for functional popper moulds comprising a press and an upper die holder (1) and a lower die holder (2) arranged opposite to each other, characterized in that: The utility model relates to a kind of production line of shell fragment, including upper bolster plate, lower bolster plate, the upper bolster plate is installed on upper die holder (1), lower bolster plate is installed on lower die holder (2), upper die holder (1) and lower die holder (2) are respectively installed with multiple groups of upper guide rod (3) and multiple groups of lower guide rod (4), upper guide rod (3) and lower guide rod (4) are matched one by one, upper die holder (1) is installed on the output end of press machine;For producing shell fragment (13), various thicknesses of shell fragment (13) are equal and symmetric about center axis in length direction, the middle part of shell fragment (13) is smooth pointed top (132) formed by two groups of symmetrical arc, pointed top (132) extends arc-shaped edge (131) at end, arc-shaped edge (131) end is circular hem (133), the junction of pointed top (132) and hem (133) with arc-shaped edge (131) is smooth and flat; It also includes pre-punching die set and forming punch die set, pre-punching die set includes matched upper die one (9) and lower die one (10), forming punch die set includes matched upper die two (11) and lower die two (12), upper die one (9) and upper die two (11) are both installed on upper bolster plate, lower die one (10) and lower die two (12) are both installed on lower bolster plate; The bottom end of upper die two (11) is lower than the top end of upper die one (9) or lower die two (12) is higher than lower die one (10), the bottom end of upper die one (9) is respectively provided with arc-shaped pressing edge two (92) for pressing pointed top (132), arc-shaped pressing edge one (91) for pressing arc-shaped edge (131) and straight pressing edge (93) from both sides of center axis in sequence, arc-shaped pressing edge two (92) and arc-shaped pressing edge one (91) are both concave upward, the top end of lower die one (10) is respectively provided with arc-shaped top edge two (102) matched with arc-shaped pressing edge two (92) and arc-shaped top edge one (101) matched with arc-shaped pressing edge one (91) from both sides of center axis in sequence; Lower die one (10) is respectively provided with liftable side baffle (151) on left and right sides, elastic member one (153) for restoring original position of side baffle (151) is installed between side baffle (151) and lower bolster plate, when upper die one (9) is pressed downward, upper die one (9) presses side baffle (151) on both sides, and elastic member one (153) is compressed; The distance between inner walls of two groups of side baffles (151) is equal to the length of blank of shell fragment (13), and the distance between two groups of straight pressing edges (93) is less than the distance between inner walls of two groups of side baffles (151); The bottom end of upper die two (11) is respectively provided with forming pressing edge two (112) concave downward and same as the arc of pointed top (132) and forming pressing edge one (111) same as the shape of arc-shaped edge (131) from both sides of center axis in sequence, and limit plate two (161) is installed on both sides of upper die two (11). The top end of the lower die two (12) is provided with a forming top edge two (122) matched with the forming pressure edge one (111) and an arc-shaped concave edge one (123) downwardly recessed in the middle of the lower die two (12) below the end of the forming top edge two (122) from the center axis to the two sides in turn, and the lower die two (12) is installed on the auxiliary part (17) for lifting the lower die two (12); The lower die two (12) is provided with a forming side plate (181) on the left and right sides, and the top end of the forming side plate (181) close to the lower die two (12) is provided with a concave edge two (182) with a circular arc shape, the radius of the concave edge one (123) and the concave edge two (182) is equal, and when the lower die two (12) is at the lowest point, the centers of the concave edge one (123) and the concave edge two (182) on the same side coincide; the auxiliary part (17) comprises a lifting groove two (171), an elastic part two (172) and a lifting rod (173), the lifting groove two (171) is provided on the lower base plate two (8) directly below the lower die two (12), the inner wall of the lifting groove two (171) is in sliding connection with the lifting rod (173), the elastic part two (172) is vertically installed between the top end of the lifting rod (173) and the inner wall of the bottom end of the lifting groove two (171), and the lower die two (12) is installed on the lifting rod (173).

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