Multi-station progressive lifting ring stamping die
By designing a multi-station-level induction ring stamping die and integrating multiple stamping processes, the problems of high labor intensity and long production cycle of lifting ring stamping processing in the prior art have been solved, and the production efficiency and the production capacity have been greatly improved.
Patent Information
- Application Number
- CN202510371931.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-27
- Publication Date
- 2025-05-13
AI Technical Summary
In the prior art, the labor intensity of the lifting ring stamping processing is high and the production cycle is long, resulting in low production efficiency.
A multi-station-level overhead lifting ring stamping die is designed, integrating multiple stamping processes such as punching, marking, cutting, folding and cutting into one. Through the cooperation of the upper and lower dies, the continuous movement and processing of the steel belt between multiple processes is achieved.
It reduces complex multi-process stamping operations, reduces workers' labor intensity, eliminates the transportation and storage of intermediate process products, shortens the production cycle, and greatly improves production capacity.
Smart Images
Figure CN119972937A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of mold production, in particular to a multi-station progressive hanging ring punching mold. Background Art
[0002] In the integral dropper structure used in the overhead contact system of high-speed electrified railways, the dropper ring is an important component of the integral dropper string. Its manufacturing process mainly includes multiple stamping processes such as punching, marking, trimming, folding and cutting.
[0003] In the above-mentioned entire production process, since each stamping process is a single-station die, the blanks stamped out from different processes need to be transferred and stored between the processes during production. Especially when the same punching machine is used in different processes, the corresponding stamping dies need to be disassembled and installed. This makes the labor intensity of the hanging ring stamping process high, the production cycle is long, and the production efficiency is low. Summary of the invention
[0004] The technical problem to be solved by the present invention is: in order to overcome the deficiencies in the prior art, the present invention provides a multi-station progressive hanging ring punching die which can effectively reduce the working intensity and improve the production efficiency.
[0005] The technical solution adopted by the present invention to solve the technical problem is: a multi-station progressive ring punching die, comprising a lower die, an upper die is arranged above the lower die for lifting and lowering movement to cooperate with the lower die to complete punching, a steel strip as a raw material of the ring is moved between the upper die and the lower die, and a punching unit, a marking unit, a trimming unit, a folding unit and a cutting unit are arranged in sequence on the moving route of the steel strip; Punching unit: a punch for punching holes on the steel strip at both ends of the corresponding lifting ring; Marking unit: a marking machine that prints digital marks on the steel strip inside the punching position; Trimming unit: It has a trimming die head for trimming the two sides of the steel strip into the shape of the two sides of the ring; Folding unit: It has a folding die head that presses down on the steel strip to fold the two sides of the trimmed steel strip upwards; Cutting unit: a cutting die head for cutting the steel strip to form the shapes of both ends of the ring; The punch, the marking machine, the trimming die head, the folding die head and the cutting die head are all installed on the upper die.
[0006] Furthermore, in order to improve the folding effect, a pre-folding unit is provided on the lower mold between the trimming unit and the folding unit. The pre-folding unit has a pre-folding block fixed on the lower mold. The upper end surface of the pre-folding block has a groove. The two side walls of the groove are inclined inward, and the width of the groove is wide in the middle and narrowed at both ends.
[0007] Specifically, the trimming die heads are used in pairs and are located on both sides of the steel strip. The inner side surface of the trimming die heads includes a middle vertical surface and semicircular arc surfaces located at both ends of the vertical surface and with the outer ends flared outward. The vertical surface and the semicircular arc surface are transitionally connected by a convex arc surface protruding inward.
[0008] Furthermore, the bottom of the folding die head has a semicircular protrusion, and a forming block is fixed on the lower die below the folding die head. The forming block has a forming groove opened along the moving direction of the steel strip, and the inner side surface of the forming groove includes an inclined surface located in the middle of the forming groove and inclined inwardly, and arc surfaces located at both ends of the inclined surface are respectively connected to the inclined surface and have inward inclinations and outward expansions at the outer ends. The bottom surface of the forming groove includes a concave arc surface located in the middle of the forming groove and matched with the semicircular protrusion, the upper edge of the concave arc surface is connected to the bottom edge of the inclined surface, and triangular planes are respectively connected to the two ends of the concave arc surface, and the two side edges of the triangular plane are connected to the bottom edge of the arc surface.
[0009] Furthermore, the cutting die head has two semicircular arc cutters on the left and right. The semicircular arc cutter on the left forms the right end of the ring when cutting the steel strip, and the semicircular arc cutter on the right forms the left end of the ring when cutting the steel strip.
[0010] In order to prevent the steel strip from being displaced during the punching process, a limiting column is fixed on the upper die behind the punching unit, which is inserted into the punching hole during punching to limit the displacement of the steel strip.
[0011] Preferably, to facilitate installation operation, the stamping die also has a base, a bottom plate is fixed on the base, a lifting plate is provided above the bottom plate, the lower die is installed on the bottom plate, the upper die is fixedly connected to the bottom surface of the lifting plate, and the steel belt is located between the upper die and the lower die and moves from the left end of the base to the right end of the base.
[0012] To ensure that the steel belt moves straight and prevent deflection, a guide seat is fixed on the bottom plate at the left end of the base, and a guide groove with a width matching the steel belt is opened on the guide seat. The lower mold is provided with guide pieces corresponding to the guide groove and clamped on both sides of the steel belt.
[0013] Furthermore, to facilitate blanking, an upper blanking slope is provided on the lower die at the right end of the base, and a lower blanking slope is provided on the bottom plate.
[0014] Furthermore, guide rods arranged in a matrix are provided between the bottom plate and the lifting plate, the lower ends of the guide rods are fixedly connected to the bottom plate, and the upper ends of the guide rods are slidably matched with guide holes provided on the lifting plate.
[0015] The beneficial effects of the present invention are as follows: the present invention integrates multiple stamping processes such as punching, marking, trimming, folding and cutting to form a multi-station progressive stamping process, which can complete the stamping processing of the suspension rings used for the overall suspension string at one time, thereby reducing complicated multi-process stamping operations, reducing the labor intensity of workers, eliminating the transportation and storage of intermediate process products, shortening the production cycle, and greatly improving production capacity. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] The present invention is further described below in conjunction with the accompanying drawings and embodiments.
[0017] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention.
[0018] Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention after removing the lifting plate and the upper mold.
[0019] Figure 3 It is a schematic diagram of the top view of the structure after the lifting plate and the upper mold are removed from the present invention.
[0020] Figure 4 It is a schematic diagram of the three-dimensional structure of the pre-folding block of the present invention.
[0021] Figure 5 It is a schematic diagram of the three-dimensional structure of the folding die head described in the present invention.
[0022] Figure 6 It is a schematic diagram of the three-dimensional structure of the forming block of the present invention.
[0023] Figure 7 It is a schematic diagram of the three-dimensional structure of the cutting die head of the present invention.
[0024] In the figure: 1. lower die, 1-1. upper blanking inclined surface, 2. upper die, 3. steel strip, 4. punching unit, 4-1. punch, 5. marking unit, 5-1. marking machine, 6. trimming unit, 6-1. trimming die head, 7. folding unit, 7-1. folding die head, 7-2. semicircular protrusion, 8. cutting unit, 8-1. cutting die head, 8-2. semicircular arc cutter, 9. pre-folding unit, 10. pre-folding block, 10-1. groove, 11. forming block, 11-1. forming groove, 11-2. concave arc surface, 12. limiting column, 13. base, 14. bottom plate, 14-1. lower blanking inclined surface, 15. lifting plate, 16. guide seat, 17. guide member, 18. guide rod. DETAILED DESCRIPTION
[0025] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.
[0026] like Figure 1 to Figure 3 A multi-station progressive hanging ring punching die shown in the figure comprises a base 13 arranged on the work surface of a punch press, a bottom plate 14 is fixed on the base 13, and a lifting plate 15 is provided above the bottom plate 14 and is fixedly connected to the punch press slider for lifting movement; a lower die 1 is installed on the bottom plate 14, and an upper die 2 is fixedly connected to the bottom surface of the lifting plate 15, and when the upper die 2 is lifted and lowered, it cooperates with the lower die 1 to complete the stamping operation of the workpiece, and a steel strip 3 as the raw material of the hanging ring is located between the upper die 2 and the lower die 1 and moves from the left end of the base 13 to the right end of the base 13.
[0027] A guide seat 16 is fixed on the bottom plate 14 at the left end of the base 13, and a guide groove with a width matching that of the steel strip 3 is opened on the guide seat 16. The steel strip 3 enters between the upper die 2 and the lower die 1 through the guide groove for stamping processing; an upper blanking slope 1-1 is opened on the right side of the lower die 1 at the right end of the base 13, and a lower blanking slope 14-1 is opened on the right side of the bottom plate 14. The stamped hanging ring slides from the upper blanking slope 1-1 to the lower blanking slope 14-1 by its own weight and then falls into the material box.
[0028] Four guide rods 18 arranged in a matrix are provided between the bottom plate 14 and the lifting plate 15 . The lower ends of the guide rods 18 are fixedly connected to guide sleeves fixed on the bottom plate 14 , and the upper ends of the guide rods 18 are slidably matched with guide holes provided on the lifting plate 15 .
[0029] Located on the moving route of the steel strip 3, between the upper die 2 and the lower die 1, there are sequentially arranged: a punching unit 4, a marking unit 5, a trimming unit 6, a folding unit 7 and a cutting unit 8.
[0030] Combination Figures 4 to 7 As shown, the punching unit 4 has two punches 4-1 set at intervals, and the punches 4-1 punch out two through holes at a distance on the steel strip 3 to form connecting holes on both side ends of the ring; the marking unit 5 has two marking machines 5-1, and the marking machines 5-1 print digital marks on the steel strip 3 inside the aforementioned punching positions; the trimming unit 6 has a trimming die 6-1 for trimming both side edges of the steel strip 3 to form both side edges of the ring; the folding unit 7 has a folding die 7-1 pressed down on the steel strip 3, so that the both side edges of the trimmed steel strip 3 are folded upward to form the middle shape of the ring; the cutting unit 8 has a cutting die 8-1 for cutting the steel strip 3 to form the shapes of both end portions of the ring.
[0031] The punch 4 - 1 , the marking machine 5 - 1 , the trimming die 6 - 1 , the folding die 7 - 1 and the cutting die 8 - 1 are all fixed to the upper die 2 .
[0032] There are two trimming dies 6-1, which are respectively located on both sides of the steel strip 3 and used in pairs. The inner side surface shape of the trimming die 6-1 includes a middle vertical surface and semicircular arc surfaces located at both ends of the vertical surface and with the outer ends flared outward. The vertical surface and the semicircular arc surface are transitionally connected by a convex arc surface protruding inward.
[0033] The bottom of the folding die 7-1 has a semicircular protrusion 7-2, and a forming block 11 is fixed on the lower die 1 below the folding die 7-1. The forming block 11 is provided with a forming groove 11-1 consistent with the moving direction of the steel strip 3. The inner side surface shape of the forming groove 11-1 includes an inclined surface inclined inwardly in the middle, and arc surfaces at both ends of the inclined surface that are inwardly inclined and connected to the inclined surface and expand outward at the outer ends. The bottom surface of the forming groove 11-1 corresponding to the inclined surface has a concave arc surface 11-2 that matches the semicircular protrusion 7-2, and the upper edge of the concave arc surface 11-2 is connected to the bottom edge of the inclined surface, and triangular planes are connected to the two ends of the concave arc surface 11-2, and the two side edges of the triangular plane are connected to the bottom edge of the arc surface.
[0034] The cutting die 8-1 has semicircular cutters 8-2 on the left and right sides respectively. The semicircular cutter 8-2 on the left forms the right end shape of the hanging ring when cutting the steel strip 3, and the semicircular cutter 8-2 on the right forms the left end shape of the hanging ring when cutting the steel strip 3.
[0035] In order to make the folding effect of the folding unit 7 better, a pre-folding unit 9 for pre-folding the two side edges of the steel strip 3 after trimming upwards is also provided on the lower mold 1 between the trimming unit 6 and the folding unit 7. The pre-folding unit 9 has a pre-folding block 10 fixed on the lower mold 1. The upper end face of the pre-folding block 10 has a groove 10-1. The two side walls of the groove 10-1 are inclined inwardly, and the width of the groove 10-1 is wide in the middle and narrows inward at both ends.
[0036] Figure 3 The dotted box in the figure indicates the areas where the punching unit 4, the marking unit 5, the trimming unit 6, the pre-folding unit 9, the folding unit 7 and the cutting unit 8 are located.
[0037] A limiting column 12 is fixed on the upper die 2 located behind the punching unit 4. The limiting column 12 is respectively arranged in the areas corresponding to the marking unit 5, the trimming unit 6, the pre-folding unit 9, the folding unit 7 and the cutting unit 8. Each area has two limiting columns 12 corresponding to the two through holes punched by the punching unit 4. During stamping, the limiting column 12 is inserted into the punching hole, thereby controlling the displacement of the steel strip 3 during the stamping process.
[0038] In particular, a limiting sleeve corresponding to the limiting column 12 is movably provided on the lower mold 1 where the pre-folding unit 9 is located, a compression spring is provided at the lower end of the inner hole of the limiting sleeve, and the upper end surface of the limiting sleeve is supported on the bottom surface of the steel strip 3 before pre-folding.
[0039] On the moving route of the steel strip 3, the lower die 1 is provided with guide members 17 corresponding to the guide grooves of the guide seat 16 and clamped on both sides of the steel strip 3. There are two types of guide members 17. The guide members 17 corresponding to the punching unit 4 and the marking unit 5 are guide columns. The upper end of the guide column has an annular groove exposing the upper end surface of the lower die 1. During punching and marking, the gaps on both sides of the steel strip 3 are clamped between the inner side surface of the upper end of the annular groove and the lower die 1; the guide member 17 corresponding to the pre-folding unit 9 is a guide block. The inner side surface of the guide block has a clamping groove. During pre-folding, the gap of the steel strip 3 is clamped in the clamping groove.
[0040] During stamping, the steel strip 3 enters the stamping die through the guide groove of the guide seat 16, and is guided and moved by the guide piece 17. The upper die 2 is driven by the punching machine slider to move up and down, and the punch 4-1 of the punching unit 4 punches two through holes on the steel strip 3; the steel strip 3 continues to move to the right to the marking unit 5, and the marking machine 5-1 marks a number on the steel strip 3 on the inner side of the through hole; then the trimming die head 6-1 of the trimming unit 6 cuts off the excess parts on both sides of the steel strip 3 to form the two sides of the ring; the trimmed steel strip 3 continues to move to the right to the pre-folding unit 9, and the upper die 2 moves down to press the steel strip 3 into the upper edge of the groove 10-1 of the pre-folding block 10. When the steel strip 3 is pressed on the limit sleeve, the compression spring is compressed. Since the two side walls of the groove 10-1 are inclined inward, this causes the two side edges of the steel strip 3 to be slightly folded upward to form a pre-folded section. When the pre-folding is completed and the upper die 2 moves up, the compression spring drives the limit sleeve to rise and reset; The steel strip 3 moves to the folding unit 7, and the folding die 7-1 presses the steel strip 3 downward. The steel strip 3 is forcefully stuck in the forming groove 11-1 of the forming block 11, and the semicircular protrusion 7-2 of the folding die 7-1 cooperates with the concave arc surface 11-2 on the bottom surface of the forming groove 11-1, and with the help of the inclined surface of the inner wall of the forming groove 11-1, the pre-folded section of the pre-folded steel strip 3 is completely folded upward to form the middle part of the ring; the folded steel strip 3 enters the cutting unit 8, and under the action of the lifting and lowering movement of the upper die 2, the semicircular arc cutter 8-2 on the left side of the cutting die 8-1 forms the right end shape of the ring when cutting the steel strip 3, and the semicircular arc cutter 8-2 on the right side of the cutting die 8-1 forms the left end shape of the ring when cutting the steel strip 3. At this point, all the stamping processing of the ring is completed, and the formed ring slides from the upper drop material slope 1-1 to the lower drop material slope 14-1 by its own weight and then falls into the material box.
[0041] The punch 4-1 punches out two more through holes on the subsequent steel strip 3, which is the second hanging ring. Subsequent stamping processes are carried out in sequence to form the second, third and other hanging rings, thereby forming a multi-station continuous hanging ring stamping process.
[0042] The present invention integrates multiple stamping processes into one to form a multi-station progressive stamping die, which can complete the stamping processing of the suspension rings used for the integral suspension strings at one time, thereby reducing complicated multi-process stamping operations, alleviating the labor intensity of workers, and eliminating the transportation and storage of intermediate process products. It not only shortens the production cycle and greatly improves the production capacity, but also reduces the equipment and molds required for the production of the suspension rings, as well as the workshop area occupied by the equipment and mold storage.
[0043] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.
Claims
1. A multi-station progressive ring punching die, characterized by: The invention comprises a lower die (1), an upper die (2) is arranged above the lower die (1) for performing lifting movement to cooperate with the lower die (1) to complete stamping, a steel strip (3) as a raw material for the hanging ring is moved between the upper die (2) and the lower die (1), and a punching unit (4), a marking unit (5), a trimming unit (6), a folding unit (7) and a cutting unit (8) are arranged in sequence on the moving route of the steel strip (3); Punching unit (4): having a punch (4-1) for punching holes in the steel strip (3) at the ends of both sides of the corresponding lifting ring; Marking unit (5): having a marking machine (5-1) for printing digital marks on the steel strip (3) inside the punching position; A trimming unit (6): having a trimming die head (6-1) for trimming the two sides of the steel strip (3) into the shape of the two sides of the hanging ring; A folding unit (7): comprising a folding die head (7-1) which presses downward on the steel strip (3) to fold both sides of the trimmed steel strip (3) upward; A cutting unit (8): having a cutting die head (8-1) for cutting the steel strip (3) to form the shapes of both ends of the hanging ring; The punch (4-1), the marking machine (5-1), the trimming die (6-1), the folding die (7-1) and the cutting die (8-1) are all installed on the upper die (2).
2. The multi-station progressive ring punching die according to claim 1, characterized in that: A pre-folding unit (9) is provided on the lower mold (1) between the trimming unit (6) and the folding unit (7), and the pre-folding unit (9) has a pre-folding block (10) fixed on the lower mold (1), and the upper end surface of the pre-folding block (10) has a groove (10-1), and the two side walls of the groove (10-1) are inclined inwardly, and the width of the groove (10-1) is wide in the middle and narrow at both ends.
3. The multi-station progressive ring punching die according to claim 1, characterized in that: The trimming die heads (6-1) are used in pairs and are located on both sides of the steel strip (3), respectively. The inner side surface of the trimming die heads (6-1) comprises a middle vertical surface and semicircular arc surfaces located at both ends of the vertical surface and with the outer ends extending outwards. The vertical surface and the semicircular arc surface are transitionally connected by a convex arc surface protruding inwards.
4. The multi-station progressive ring punching die according to claim 1, characterized in that: The bottom of the folding die head (7-1) has a semicircular protrusion (7-2), and a forming block (11) is fixed on the lower die (1) below the folding die head (7-1). The forming block (11) has a forming groove (11-1) opened along the moving direction of the steel strip (3). The inner side surface of the forming groove (11-1) includes an inclined surface located in the middle of the forming groove (11-1) and inclined inwardly, and arc surfaces located at both ends of the inclined surface are respectively connected to the inclined surface and have outward expansion at the outer ends. The bottom surface of the forming groove (11-1) includes a concave arc surface (11-2) located in the middle of the forming groove (11-1) and matched with the semicircular protrusion (7-2), the upper edge of the concave arc surface (11-2) is connected to the bottom edge of the inclined surface, and triangular planes are respectively connected to the two ends of the concave arc surface (11-2), and the two side edges of the triangular plane are connected to the bottom edge of the arc surface.
5. The multi-station progressive ring punching die according to claim 1, characterized in that: The cutting die head (8-1) has two left and right semicircular cutters (8-2); the left semicircular cutter (8-2) forms the right end of the hanging ring when cutting the steel strip (3); and the right semicircular cutter (8-2) forms the left end of the hanging ring when cutting the steel strip (3).
6. The multi-station progressive ring punching die according to claim 1, characterized in that: A limiting column (12) is fixed on the upper die (2) behind the punching unit (4) and is inserted into the punching hole during punching to limit the displacement of the steel strip (3).
7. The multi-station progressive ring punching die according to claim 1, characterized in that: The invention also comprises a base (13), a bottom plate (14) being fixed on the base (13), a lifting plate (15) being provided above the bottom plate (14), the lower die (1) being mounted on the bottom plate (14), the upper die (2) being fixedly connected to the bottom surface of the lifting plate (15), and the steel strip (3) being located between the upper die (2) and the lower die (1) and moving from the left end of the base (13) to the right end of the base (13).
8. The multi-station progressive ring punching die according to claim 7, characterized in that: A guide seat (16) is fixed on the bottom plate (14) at the left end of the base (13), and a guide groove with a width matching that of the steel strip (3) is provided on the guide seat (16). The lower die (1) is provided with guide members (17) corresponding to the guide groove and clamped on both sides of the steel strip (3).
9. The multi-station progressive ring punching die according to claim 7, characterized in that: An upper blanking inclined surface (1-1) is provided on the lower die (1) at the right end of the base (13), and a lower blanking inclined surface (14-1) is provided on the bottom plate (14).
10. The multi-station progressive ring punching die according to claim 7, characterized in that: Guide rods (18) arranged in a matrix are provided between the bottom plate (14) and the lifting plate (15); the lower ends of the guide rods (18) are fixedly connected to the bottom plate (14); and the upper ends of the guide rods (18) are slidably engaged with guide holes provided on the lifting plate (15).