Novel automobile auxiliary frame bent pipe punching die
By completing the punching of two bent pipes simultaneously through two processes, and combining the insert die and guide structure, the problems of low cycle time and frequent wear of existing molds are solved, achieving high efficiency, low cost, mold compatibility and positioning accuracy.
Patent Information
- Application Number
- CN202422888992.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-26
- Publication Date
- 2025-12-19
- Estimated Expiration
- 2034-11-26
AI Technical Summary
Existing automotive subframe bending and punching dies suffer from problems such as low punching cycle time, cumbersome operation, frequent die wear, inaccurate positioning, and incompatibility with multiple vehicle models.
The design employs a two-stage mold closing mechanism, enabling the simultaneous punching of two bent pipes in two processes. It utilizes a die insert system and a guide post and guide sleeve structure, combined with V-blocks and magnets for positioning, ensuring mold coaxiality and accurate positioning.
It improves the punching cycle time, simplifies mold replacement and maintenance, reduces costs, and ensures punching consistency and mold compatibility.
Smart Images
Figure CN223684286U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of automobile parts manufacturing, a novel automobile auxiliary frame pipe bending punching die. BACKGROUND
[0002] The existing auxiliary frame pipe bending punching die is combined by an upper die and a lower die, three processes are adopted to complete a pipe bending punching process flow, a first process is used to pre-punch a small hole, a second process is used to punch a single-side hole of the pipe, and a third process is used to punch a hole on the other side to complete the pipe punching process.
[0003] The existing technology has many problems, specifically:
[0004] 1. The punching beat is low, and the operation is complicated.
[0005] 2. The third process does not have an automatic material returning function, and manual knocking is required after completion.
[0006] 3. The concave-convex die wear needs to be matched and replaced on site, and the replacement needs to be replaced entirely, which is troublesome and high in cost.
[0007] 4. When the upper die and the lower die are combined by a single-side guide column, radial movement and deflection are prone to occur, which leads to damage of the concave-convex die (4) in the three processes.
[0008] 5. The combined dies in the three processes are inconsistent in level, which is quite troublesome to debug and is prone to damage the die.
[0009] 6. The core rod in the three processes is elliptical and installed in the die seat, which requires high machining size and positioning by a pin, which may cause misalignment of the concave-convex die and burrs in punching, leading to difficulty in taking out the workpiece and easy wear and damage of the die.
[0010] 7. The workpiece in the three processes is positioned by a magnet and has no limit, which is not accurate in positioning and unstable in punching size.
[0011] 8. The die cannot be compatible with multiple vehicle models. UTILITY MODEL CONTENTS
[0012] The utility model provides a novel automobile auxiliary frame pipe bending punching die, which adopts twice combined die to complete a pipe punching process flow of two pipes, punches two parts at a time, effectively improves the beat, and the convex die and the concave die are in the form of standard die insert, the concave-convex die is simple to replace, and the die can be compatible with multiple vehicle models.
[0013] The utility model provides a novel automobile subframe pipe bending punching die, including upper die plate, lower die plate and 2 punch stations, the punch station sets up between the upper die plate and lower die plate, and the punch station includes vehicle type V block, punch, concave die, concave die fixed seat, core rod and core rod fixed seat, two positioning grooves for positioning pipe bending workpieces are arranged on the vehicle type V block, the core rod end is embedded in the pipe bending workpiece, the punch is connected below the core rod by bolt, the punch penetrates the pre -pressing hole of pipe bending workpiece, the punch and concave die cooperate, the concave die is embedded in the concave die fixed seat and cooperates, and the concave die fixed seat is connected with the lower die plate.
[0014] The utility model discloses a die is composed of upper and lower dies, designs two stations, and completes the punching process corresponding to two processes, two positioning grooves for positioning pipe bending workpieces are arranged on the vehicle type V block, that is, double stations are punched simultaneously in each process, and the punching rhythm can be effectively improved.
[0015] Preferably, the utility model also includes guide columns arranged between the upper die plate and the lower die plate, and limiting columns arranged between the upper die plate and the lower die plate.
[0016] Preferably, the punch and the concave die are both configured as circular ring structures, which are simple in structure and convenient to process and nest.
[0017] Preferably, the utility model has two punch stations, and the vehicle type V blocks can be placed one above the other.
[0018] Preferably, a return spring is arranged between the core rod fixed seat and the lower die plate to reset the core rod and the punch.
[0019] Preferably, the end of the mandrel is provided with a punch mounting seat, the top of the punch is arranged in the punch mounting seat, a threaded hole is arranged in the center of the punch mounting seat, and a positioning hole is arranged beside the threaded hole. Through bolt connection and positioning pin positioning, the punch and the mandrel are reliably and accurately connected and can be disassembled and replaced, nested design structure is adopted, the concave and convex dies can be replaced, the structure is simple, replacement is convenient, the manufacturing period of parts is short, only the insert sleeve needs to be replaced, and the use and maintenance cost is lower.
[0020] Preferably, the utility model still includes the limiting piece that sets up on the mandrel fixed seat and the pipe workpiece end abuts, this limiting piece is equivalent to limit the axial positioning of the pipe, guarantees the size of the hole after punching and the pipe section.
[0021] Preferably, the number of guide columns is four and they are arranged on four corners of the mold, and the number of limiting columns is three and they are arranged on two sides and the middle of the length direction of the mold. The upper and lower molds are guided to close by four guide columns and guide sleeves, which ensures the coaxiality of the upper and lower molds and prevents the radial movement of the upper mold and the damage of the mold caused by closing.
[0022] Compared with the prior art, the utility model has the following beneficial effects:
[0023] The utility model adopts one-time punching of two parts, which effectively improves the beat.
[0024] The concave dies used in the utility model are all in the form of inserts, which are convenient to replace and save costs.
[0025] The upper mold uses four guide columns and three limiting columns, which accurately positions and effectively prevents the damage of the mold.
[0026] The first process concave die and the second process punch mounting seat are in the form of a cylinder and are fixed by a screw rod at the back, which prevents axial and radial movement and can be adjusted to make the concave and convex dies of the processes more accurately matched, reducing the wear and damage between the concave and convex dies.
[0027] The pipe workpiece uses a V-block and double magnets for positioning, which makes the consistency of part punching more stable and ensures quality.
[0028] The mold is designed to replace the concave and convex dies, which is simple and compatible with various vehicle products. DRAWINGS
[0029] Figure 1 It is a whole structure diagram of the novel automobile subframe pipe punching mold.
[0030] Figure 2 It is a plan view after hiding the upper mold plate.
[0031] Figure 3 is Figure 1 A-A direction sectional view of the automobile auxiliary frame.
[0032] Figure 4 is Figure 2 B-B direction sectional view of the automobile auxiliary frame.
[0033] Figure 5 is a second process working state schematic view of a novel automobile auxiliary frame pipe bending and punching die.
[0034] Figure 6 is a structure schematic view of the automobile V-shaped block.
[0035] Figure 7 is a sectional structure view of the automobile V-shaped block.
[0036] Figure 8 is a structure sectional view of the die holder.
[0037] Figure 9 is a matching structure schematic view of the punch and the die.
[0038] In the figure: 1-upper die plate, 2-lower die plate, 3-automobile V-shaped block, 4-punch, 5-die, 6-die holder, 7-core rod, 701-punch mounting seat, 702-thread hole, 703-positioning hole, 8-core rod holder, 9-guide column, 10-limiting column, 11-supporting frame, 12-return spring, 13-limiting block, upper die 14-support, 15-lower die support, 16-material removing die, 17-step limiting, 18-T-head bolt, 19-die code plate, 20-pipe workpiece. DETAILED DESCRIPTION
[0039] The utility model makes further explanation in combination with the drawings and specific implementation, the schematic embodiment and the explanation thereof of the utility model are used to explain the utility model, and do not constitute improper limitation to the utility model.
[0040] In the description of the utility model, it is understood that the orientation or position relationship indicated by the terms "left", "right", "up", "down", "front", "back" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or structure must have a particular orientation, a particular orientation structure and operation, therefore, it can not be understood as the limitation of the utility model.
[0041] Example 1:
[0042] As Figures 1-4As shown, a new type of automobile subframe bent pipe punching die, including the upper die plate 1, the lower die plate 2 and two stamping stations; the stamping station is arranged between the upper die plate 1 and the lower die plate 2. Figure 1 As shown, the left is the first stamping station, and the right is the second stamping station.
[0043] As shown, Figure 4 and Figure 9 As shown, the stamping station includes a vehicle V block 3, a punch 4, a concave die 5, a concave die fixing seat 6, a core rod 7 and a core rod fixing seat 8, the vehicle V block 3 is provided with two positioning grooves 301 for positioning the bent pipe workpiece 20, the core rod 7 is embedded in the bent pipe workpiece 20, the punch 4 is connected to the core rod 7 below by bolts, the punch 4 penetrates the pre-pressing hole of the bent pipe workpiece 20, the punch 4 and the concave die 5 cooperate, the concave die 5 is embedded in the concave die fixing seat 6 for cooperation, and the concave die fixing seat 6 is connected with the lower die plate 2.
[0044] As shown, Figure 1 In this embodiment, one vehicle V block 3 corresponds to one stamping station, that is, two processes can be completed at a time, and four bent pipe workpieces 20 are punched.
[0045] The die of the embodiment is composed of upper and lower dies, two processes are designed to complete the punching process, and each process is double-station punching at the same time, which can effectively improve the punching rhythm. The concave die 5 in the new die is in the form of a sleeve, which is convenient to replace and saves cost. The punch 4 and the concave die 5 are in a split type, which is simple in structure and convenient to replace and maintain.
[0046] Embodiment 2:
[0047] As shown, Figures 1-2 A new type of automobile subframe bent pipe punching die, including the upper die plate 1, the lower die plate 2 and two stamping stations, two stamping stations correspond to the first process and the second process respectively, that is, the left position is the first process, and the right position is the second process; the stamping station is arranged between the upper die plate 1 and the lower die plate 2.
[0048] As shown, Figure 4 and Figure 5 As shown, the stamping station includes a vehicle V block 3, a punch 4, a concave die 5, a concave die fixing seat 6, a core rod 7 and a core rod fixing seat 8.
[0049] As shown, Figure 6 and Figure 7As shown, the vehicle model V block 3 is provided with two positioning grooves 301 for positioning the elbow pipe workpiece 20, and the two positioning grooves 301 realize positioning of two elbow pipe workpieces 20 by one vehicle model V block 3, the core rod 7 is embedded in the elbow pipe workpiece 20, a punch 4 is connected below the core rod 7, the punch 4 penetrates the pre-pressing hole of the elbow pipe workpiece 20, the punch 4 and a concave die 5 are matched, the concave die 5 is embedded in a concave die fixing seat 6 for matching, and the concave die fixing seat 6 is connected with the lower die plate 2.
[0050] As shown in the figure, Figure 1 As shown in the figure, the upper die plate 1 of the embodiment is connected with a punch, the upper die plate 1 is provided with a stepped limiting part 17 and a T-head bolt 18, the T-head bolt 18 is used for connecting the punch, the stepped limiting part 17 is used for positioning the punch and limiting the freedom degree of the punch, the stepped limiting part 17 is arranged at the position where the gasket of the upper die plate 1 is installed on the punch, so that the radial stringing of the upper die plate 1 and the limiting of the upper and lower die plates are prevented, and the damage of the die caused by the upper and lower die plates is prevented.
[0051] As shown in the figure, Figure 1 As shown in the figure, the embodiment further comprises an upper die support 14 arranged on the upper part of the upper die plate 1, a lower die support 15 arranged on the lower part of the lower die plate 2, a material removing die 16 used for clamping the elbow pipe workpiece 20, and a die code plate 19 arranged on the length direction edge of the lower die plate 2.
[0052] As shown in the figure, Figure 3 As shown in the figure, the embodiment further comprises a guide column 9 arranged between the upper die plate 1 and the lower die plate 2 and a limiting column 10 arranged between the upper die plate 1 and the lower die plate 2. The upper and lower dies are guided and closed by the guide column 9, so that the coaxiality of the upper and lower dies is ensured, and the radial stringing of the upper die and the limiting of the upper and lower dies are prevented by the limiting column 10.
[0053] As shown in the figure, Figure 9 As shown in the figure, the punch 4 and the concave die 5 are both configured as a circular ring structure, which is simple in structure, convenient to process and nested installation.
[0054] As shown in the figure, Figure 1 As shown in the figure, the embodiment comprises two stamping stations, and the positions of the vehicle model V blocks 3 can be one above the other, one vehicle model V block 3 of the stamping station is arranged on the lower die plate 2, and the other vehicle model V block 3 of the stamping station is arranged on the support frame 11 connected with the lower die plate 2 and arranged at the same height as the upper die plate 1. In this way, the elbow pipe can be turned by 90° in the two processes, and the processing and clamping are facilitated. In the utility model, the vehicle model V block 3 is positioned by a V block and double magnets, so that the consistency of the punching of the part is more stable, and the quality is guaranteed.
[0055] As shown in the figure, Figure 4 As shown in the figure, the embodiment comprises a reset spring 12 arranged between the core rod fixing seat 8 and the lower die plate 2, which is used for resetting the core rod 7 and the punch 4.
[0056] As Figure 9 shown in the embodiment, the core rod 7 end is provided with a punch mounting seat 701, the top of the punch 4 is arranged in the punch mounting seat 701, a threaded hole 702 is arranged in the center of the punch mounting seat 701, a bolt penetrates the punch 4 and is connected with the threaded hole 702 to realize the installation of the punch 4, a positioning hole 703 is arranged beside the threaded hole 702, and a positioning pin penetrates the punch 4 and cooperates with the positioning hole 703 to realize positioning. Through bolt connection and positioning pin positioning, the punch 4 and the core rod 7 are reliably and accurately connected, the nested design structure is adopted, the punch and die 4 can be easily disassembled, the structure is simple, the replacement is convenient, the manufacturing period of parts is short, only the insert sleeve needs to be replaced, and the use and maintenance cost is lower.
[0057] As Figure 4 and Figure 5 shown in the embodiment, the limiting block 13 is arranged on the core rod fixing seat 8 and abuts against the end of the bent pipe workpiece 20. The limiting block 13 corresponds to limiting the axial positioning of the bent pipe workpiece 20, and guarantees the size of the hole and the pipe section after punching.
[0058] As Figure 2 and Figure 3 shown in the embodiment, the number of the guide columns 9 is four, and the guide columns 9 are arranged on four corners of the mold. The number of the limiting columns 10 is three, and the limiting columns 10 are arranged on two sides and the middle of the length direction of the mold. The upper and lower molds are guided to close by four guide column 9 guide sleeves, the coaxiality of the upper and lower molds is guaranteed, the radial movement of the upper mold is prevented, and the damage of the mold caused by closing is prevented.
[0059] Working principle of the embodiment:
[0060] As Figure 5 and Figure 9 shown, taking the second process as an example, the core rod 7 is inserted into the bent pipe workpiece 20, the punch 4 is arranged above the preset hole of the bent pipe workpiece 20, and the punch 4 is arranged above the position of the die 5. The upper die plate 1 is connected with the punch press, the punch press drives the upper die plate 1 to press down, the upper die plate 1 drives the core rod fixing seat 8, the core rod 7 and the punch 4 to move downward, the punch 4 and the die 5 are tightly matched, so that the punching of the hole is completed. After unloading, the bent pipe workpiece 20 is arranged under the action of the reset spring 12, and the die 5 and the punch 4 are separated. The working principles of the first process and the second process are the same.
[0061] In the embodiment, four bent pipe workpieces 20 can be prevented from being punched at a time, the first station corresponds to the first process, the second station corresponds to the second process, and the production rhythm is greatly improved.
Claims
1. A new type of automobile subframe pipe bending and punching die, characterized in that Including the upper die plate (1), the lower die plate (2) and two stamping stations;The stamping station is arranged between the upper die plate (1) and the lower die plate (2), and the stamping station comprises a vehicle type V block (3), a punch (4), a concave die (5), a concave die fixing seat (6), a core rod (7) and a core rod fixing seat (8), the vehicle type V block (3) is provided with two positioning grooves (301) for positioning the elbow workpiece (20), the core rod (7) is embedded in the elbow workpiece (20), the punch (4) is connected below the core rod (7) by bolts, the punch (4) penetrates the pre-pressing hole of the elbow workpiece (20), the punch (4) and the concave die (5) cooperate, the concave die (5) is embedded in the concave die fixing seat (6) for cooperation, and the concave die fixing seat (6) is connected with the lower die plate (2).
2. The novel automobile subframe pipe bending and punching die according to claim 1, characterized in that: It also includes guide columns (9) arranged between the upper die plate (1) and the lower die plate (2), and limiting columns (10) arranged between the upper die plate (1) and the lower die plate (2).
3. The novel automobile subframe pipe bending and punching die according to claim 1, characterized in that: The punch (4) and the concave die (5) are both configured as a circular ring structure.
4. The novel automobile subframe pipe bending and punching die according to claim 1, characterized in that: It also includes a support frame (11) connected to the lower die plate (2), a vehicle type V block (3) of one stamping station is arranged on the lower die plate (2), and a vehicle type V block (3) of another stamping station is connected to the support frame (11) and arranged flush with the upper die plate (1).
5. The novel automobile subframe pipe bending and punching die according to claim 1, characterized in that: The core rod fixing seat (8) and the lower die plate (2) are provided with a reset spring (12) therebetween.
6. The novel automobile subframe pipe bending and piercing die according to claim 1, characterized in that: The core rod (7) is provided with a punch mounting seat (701) at the end, the punch (4) is arranged in the punch mounting seat (701), the punch mounting seat (701) is provided with a threaded hole (702) in the center, and a positioning hole (703) is arranged beside the threaded hole (702).
7. The novel automobile subframe pipe bending and punching die according to claim 1, characterized in that: It also includes a limiting block (13) arranged on the core rod fixing seat (8) and abutting against the end of the elbow workpiece (20).
8. The novel automobile subframe pipe bending and punching die according to claim 2, characterized in that: The number of guide columns (9) is four, and they are arranged on the four corners of the mold, and the number of limiting columns (10) is three, and they are arranged on the two sides and the middle of the length direction of the mold.