Middle passage punching die of top cover rear cross beam connecting plate

Abstract

The invention discloses a middle passage punching die for a top cover rear cross beam connecting plate, which comprises an upper die holder and a lower die holder, an upper mounting groove is arranged in the upper die holder, a pair of end part punching movable seats is arranged in the upper mounting groove, end part punches are arranged on the end part punching movable seats, a side punching seat capable of laterally sliding is movably arranged in the upper mounting groove, and the lower die holder is arranged in the lower die holder. A side punching seat is arranged on the upper mounting groove, a driving inclined wedge surface is arranged on the side punching seat, a side punching punch is arranged on the side punching seat, an upper lifting forming block is arranged in the upper mounting groove, a side driving block for driving the side punching seat is arranged on the upper surface of the upper lifting forming block, and an inclined surface matched with the driving inclined wedge surface of the side punching seat is arranged on the side driving block; a lower forming block set is arranged on the lower die base, lower die end driving bases are arranged at the positions, at the two ends of the lower forming block set, of the lower die base respectively, lower die driving inclined wedge blocks are arranged on the lower die end driving bases, and end punching die buttons matched with the end punches and side punching die buttons matched with the side punching punches are arranged on the lower forming die set. And a pair of middle punches for punching the middle part of the workpiece is arranged on the upper die holder.

Description

Technical Field

[0001] The invention relates to stamping processing equipment, in particular to a middle punching die for a rear crossbeam connecting plate of a top cover. Background Art

[0002] The general structure of the wedge punching assembly is that after the upper and lower dies are closed, the driving seat installed on the upper die seat drives the driving wedge set on the lower die seat, and then the punch installed on the wedge completes the punching. This type of punching wedge layout has limitations and can only be used around the outer circle of the part. The structure of the rear crossbeam connecting plate of the top cover is as follows Figure 1 As shown in the figure, if this traditional wedge punching assembly is used, the punching in the middle of the rear cross beam connecting plate of the top cover cannot be designed with a straight punch. One can only open an extra set of molds and rotate the parts to keep the area to be punched horizontal for processing. This not only wastes the mold cost, but also requires the design of at least one more set of molds to meet the punching conditions; in addition, it increases production investment and stamping costs, requires more machines and manpower for corresponding production, and if the workpiece angle is rotated too much, it cannot meet the automatic line production, and cannot effectively increase production capacity. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a middle punching die for a top cover rear cross beam connecting plate which can complete multiple punching processes in one process to greatly reduce the processing cost.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is as follows: the middle punching die of the rear cross beam connecting plate of the top cover comprises an upper die seat and a lower die seat, the upper die seat is provided with an upper mounting groove, the upper mounting groove is provided with a pair of end punching movable seats, the end punching movable seats are provided with a driving inclined wedge surface, the end punching movable seats are provided with an end punch, a side punching seat for lateral sliding is movably provided in the upper mounting groove, the side punching seat is provided with a driving inclined wedge surface, the side punching seat is provided with a side punch, an upper floating forming block is provided in the upper mounting groove through a plurality of nitrogen springs, a side driving block for driving the side punching seat is provided on the upper surface of the upper floating forming block, and the side driving block is provided with an inclined surface matching the driving inclined wedge surface of the side punching seat;

[0005] A lower forming block group is provided on the lower die seat, a pair of locating pins matching with the locating holes on the workpiece are provided on the lower forming block group, an adjustable limit block for limiting the position of the edge of the workpiece is provided on the lower forming block group, lower die end driving seats are respectively provided at both ends of the lower forming block group on the lower die seat, a lower die driving inclined wedge block is provided on the lower die end driving seat, an end punching die button matching with the end punch and a side punching die button matching with the side punching punch are provided on the lower forming die group; a pair of middle punches for punching the middle part of the workpiece are provided on the upper die seat, and a middle die button matching with the middle punch is provided on the lower forming group block.

[0006] As a preferred solution, the upper mold base is provided with a plurality of upper mold guide blocks, and the ends of the upper mold guide blocks are in the shape of an inverted cone; the lower mold base is provided with a plurality of lower mold guide blocks that cooperate with each upper mold guide block, and the lower mold guide blocks are provided with conical guide grooves.

[0007] As a preferred solution, a positioning plate for positioning the workpiece is provided in the upper die seat at the center axis of the workpiece, and a positioning groove matching the positioning plate is provided on the upper floating forming block; and an avoidance groove for avoiding the positioning plate is provided on the lower forming block group.

[0008] As a preferred solution, a plurality of limit plates for limiting the position of the upper floating forming block are provided on the edge of the upper mounting groove on the upper mold base.

[0009] The beneficial effects of the present invention are:

[0010] Since a pair of end punching movable seats are provided in the upper mounting groove, a driving inclined wedge surface is provided on the end punching movable seat, an end punch is provided on the end punching movable seat, a side punch seat for laterally sliding is movably provided in the upper mounting groove, a driving inclined wedge surface is provided on the side punching seat, and a side punching punch is provided on the side punching seat, an upper floating forming block is provided in the upper mounting groove through a number of nitrogen springs, a side driving block for driving the side punching seat is provided on the upper surface of the upper floating forming block, and an inclined surface matching the driving inclined wedge surface of the side punching seat is provided on the side driving block; lower die end driving seats are respectively provided at both ends of the lower forming block group, a lower die driving inclined wedge block is provided on the lower die end driving seat, and an end punching die button matching the end punch and a side punching die button matching the side punch are provided on the lower forming die group; the mold pressing plate drives the end punching movable seat and the side punching seat to move when moving up and down, thereby completing the end punching and side punching actions. Moreover, the end punching movable seat and the side punching seat setting structure of the mold greatly save installation space, so that the mold can complete the punching processing on three different surfaces of the workpiece end, middle and side at one time, which not only reduces the mold cost, but also reduces the production investment and stamping cost, greatly reducing the processing cost; and the mold can meet the automatic line production and effectively improve the production capacity.

[0011] Since the upper die base is provided with a plurality of upper die guide blocks, the ends of the upper die guide blocks are in an inverted cone shape; the lower die base is provided with a plurality of lower die guide blocks that match the upper die guide blocks, and the lower die guide blocks are provided with conical guide grooves, which further ensure the die clamping accuracy and ensure that the contact position between the pressure plate and the lower die does not change, so as to avoid quality problems such as punching position offset and burrs, thereby ensuring the punching processing quality.

[0012] Since a positioning plate for positioning the workpiece is provided at the center axis of the workpiece in the upper die seat, a positioning groove matching the positioning plate is provided on the upper floating forming block; and an avoidance groove for avoiding the positioning plate is provided on the lower forming block group, positioning is more accurate and reliable, and installation is convenient.

[0013] Since a plurality of limit plates for limiting the position of the upper floating forming block are arranged at the edge of the upper mounting groove on the upper die seat, it is ensured that the upper floating forming block will not move excessively. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a structural diagram of this part.

[0015] Figure 2 This is a schematic diagram of the upper mold structure of this mold.

[0016] Figure 3 This is a schematic diagram of the upper mold structure of this mold (excluding the upper floating molding block)

[0017] Figure 4 This is a schematic diagram of the lower mold structure of this mold.

[0018] In the figure: 1 upper die seat, 2 lower die seat, 3 end punching movable seat, 4 end punch, 5 side punch seat, 6 side punch, 7 upper floating forming block, 8 limit plate, 9 side drive block, 10 lower forming block group, 11 positioning pin, 12 limit block, 13 lower die end drive seat, 14 lower die drive inclined wedge block, 15 end punching die button, 16 side punching die button; 17 middle punch, 18 middle die button; 19 upper die guide block, 20 lower die guide block, 21 positioning plate. DETAILED DESCRIPTION

[0019] The specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0020] like Figure 1-4 As shown, the middle punching die of the rear cross beam connecting plate of the top cover includes an upper die seat 1 and a lower die seat 2, an upper mounting groove is provided in the upper die seat 1, a pair of end punching movable seats 3 are provided in the upper mounting groove, a driving inclined wedge surface is provided on the end punching movable seat 3, an end punch 4 is provided on the end punching movable seat 3, a side punching seat 5 for lateral sliding is movably provided in the upper mounting groove, a driving inclined wedge surface is provided on the side punching seat 5, a side punching punch 6 is provided on the side punching seat 5, an upper floating forming block 7 is provided in the upper mounting groove through a number of nitrogen springs, and a number of limit plates 8 for limiting the position of the upper floating forming block 7 are provided on the edge of the upper mounting groove on the upper die seat 1. A side driving block 9 for driving the side punching seat 5 is provided on the upper surface of the upper floating forming block 7, and the side driving block 9 is provided with an inclined surface matching the driving inclined wedge surface of the side punching seat 5;

[0021] The lower die base 2 is provided with a lower forming block group 10, the lower forming block group 10 is provided with a pair of positioning pins 11 matched with the positioning holes on the workpiece, the lower forming block group 10 is provided with an adjustable limit block 12 for limiting the position of the edge of the workpiece, the lower die base 2 is provided with a lower die end driving seat 13 at both ends of the lower forming block group 10, the lower die end driving seat 13 is provided with a lower die driving inclined wedge block 14, the lower forming die group is provided with an end punching die button 15 matched with the end punch 4 and a side punching die button 16 matched with the side punching punch 6; the upper die base 1 is provided with a pair of middle punches 17 for punching the middle part of the workpiece, and the lower forming block is provided with a middle die button 18 matched with the middle punch 17;

[0022] The upper die base 1 is provided with a plurality of upper die guide blocks 19, the ends of which are in an inverted cone shape; the lower die base 2 is provided with a plurality of lower die guide blocks 20 that match the upper die guide blocks 19, and the lower die guide blocks 20 are provided with conical guide grooves. A positioning plate 21 for positioning the workpiece is provided at the center axis of the workpiece in the upper die base 1, and a positioning groove that matches the positioning plate 21 is provided on the upper floating forming block 7; and an avoidance groove for avoiding the positioning plate 21 is provided on the lower forming block group 10.

[0023] The above-mentioned embodiments are only illustrative of the principles and effects of the invention, as well as some embodiments of its application, and are not intended to limit the invention. It should be pointed out that a person skilled in the art can make several modifications and improvements without departing from the inventive concept of the invention, and all of these belong to the protection scope of the invention.

Claims

1. A middle punching die for a rear cross beam connecting plate of a top cover, comprising an upper die seat and a lower die seat, an upper mounting groove is provided in the upper die seat, a pair of end punching movable seats are provided in the upper mounting groove, a driving inclined wedge surface is provided on the end punching movable seat, an end punch is provided on the end punching movable seat, a side punching seat for lateral sliding is movably provided in the upper mounting groove, a driving inclined wedge surface is provided on the side punching seat, a side punch is provided on the side punching seat, an upper floating forming block is provided in the upper mounting groove through a plurality of nitrogen springs, characterized in that: The upper surface of the upper floating forming block is provided with a side driving block for driving the side punching seat, and the side driving block is provided with an inclined surface that matches the driving inclined wedge surface of the side punching seat; A lower forming block group is provided on the lower die seat, a pair of locating pins matching with the locating holes on the workpiece are provided on the lower forming block group, an adjustable limit block for limiting the position of the edge of the workpiece is provided on the lower forming block group, lower die end driving seats are respectively provided at both ends of the lower forming block group on the lower die seat, a lower die driving inclined wedge block is provided on the lower die end driving seat, an end punching die button matching with the end punch and a side punching die button matching with the side punching punch are provided on the lower forming die group; a pair of middle punches for punching the middle part of the workpiece are provided on the upper die seat, and a middle die button matching with the middle punch is provided on the lower forming group block.

2. The middle punching die of the top cover rear cross beam connecting plate according to claim 1, characterized in that: The upper die base is provided with a plurality of upper die guide blocks, the ends of which are inverted cone-shaped; the lower die base is provided with a plurality of lower die guide blocks matched with the upper die guide blocks, and the lower die guide blocks are provided with conical guide grooves.

3. The middle punching die of the top cover rear cross beam connecting plate as claimed in claim 2, characterized in that: A positioning plate for positioning the workpiece is provided in the upper die seat at the center axis of the workpiece, and a positioning groove matching the positioning plate is provided on the upper floating forming block; and an avoidance groove for avoiding the positioning plate is provided on the lower forming block group.

4. The middle punching die of the top cover rear cross beam connecting plate as claimed in claim 3, characterized in that: A plurality of limit plates for limiting the position of the upper floating forming block are arranged on the edge of the upper mounting groove on the upper die seat.

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