3D linear high-speed stamping die structure

Abstract

The utility model discloses a 3D linear high -speed punch die structure relates to punch die technical field, include: main body frame, driving motor, speed reducer, die assembly, cam assembly, die drive assembly, the utility model discloses a cam curve control the motion law and motion state of upper and lower mould, when the action logic between upper and lower mould is completely according to the track movement of curve planning when cam rotates, thereby has improved the speed of each action of upper and lower mould and has guaranteed the pressure when closing mould, has reached the function of stable high -speed forming, and the die matched with it adopts open type cavity design, avoided the copper line belt line situation when high -speed demolding, in addition, the high -precision guide rail connection between upper and lower mould of die is adopted, guarantees the precision and motion stability between upper and lower mould of die from the component level, guarantees the forming quality.

Description

Technical Field

[0001] This utility model relates to the field of stamping die technology, specifically a 3D linear high-speed stamping die structure. Background Technology

[0002] Currently, the cycle time of most common wire forming equipment on the market is around 1.5 seconds. However, the development of flat wire motors has been accelerating in recent years. Future wire forming equipment will inevitably focus on high efficiency, high automation, high stability, and modularity as its core competitiveness. Future upgrades will revolve around maximizing efficiency and intelligent flexibility. However, current mainstream molds use a split-type design, mounted on upper and lower mold drive components via guide sleeves. The upper and lower molds move independently. Under high-speed conditions, wear on the guide pillars leads to increased clearance, and combined with inertial vibration, this deteriorates the dynamic alignment accuracy to over ±0.1mm. For 3D linear parts with complex curvature, such as aluminum foil buckles for food packaging, this error can cause surface distortion or even interference, resulting in scrap. The commonly used drive method is motor-screw drive. The main problem is that while meeting the forming force, the forming speed cannot be increased. Furthermore, since the upper and lower molds are mounted on different drive components during forming, accuracy is significantly affected. Extensive debugging work is required after mold replacement or repair.

[0003] In summary, there is an urgent need for an innovative mold structure that can break through speed limits while simultaneously addressing issues of precision, lifespan, and yield, in order to meet the demands of large-scale industrial production of 3D linear parts. Utility Model Content

[0004] The purpose of this invention is to provide a 3D linear high-speed stamping die structure to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a 3D linear high-speed stamping die structure, comprising: a main frame, the main frame being a cuboid structure with an opening on the front side and a drive motor and a reducer fixed on the rear wall; an upper die assembly is provided on the lower surface of the top plate of the main frame, a lower die assembly is provided on the upper surface of the bottom plate, and a cam assembly is provided on the inner side of the rear wall, the input end of the cam assembly being connected to the output end of the reducer via a transmission shaft; an upper die drive assembly is provided on the upper surface of the top plate of the main frame, and a lower die drive assembly is provided on the lower surface of the bottom plate, one end of the upper die drive assembly being connected to the upper die assembly and the other end being connected to the cam assembly, one end of the lower die drive assembly being connected to the lower die assembly and the other end being connected to the cam assembly, and a die connecting guide rail is fixed between the left and right side walls inside the main frame, the die connecting guide rail rigidly connecting the upper die assembly and the lower die assembly, constraining the die position and the position of the die closing surface.

[0006] Furthermore, the cam assembly includes: a forming cam, a connecting shaft, and a bearing chamber arranged coaxially. The connecting shaft passes through the central hole of the forming cam and is embedded in the inner cavity of the bearing chamber. The forming cam is press-fitted into the middle section of the connecting shaft. Independent cam grooves are opened on both sides of the forming cam, and cam followers are embedded in the cam grooves.

[0007] Furthermore, the upper mold drive assembly includes: an upper cam drive rod, an upper lever, and an upper mold drive rod. The lower end of the upper cam drive rod is connected to a cam follower and slides along the guide rail direction. The upper end is connected to the upper lever via a pin. One end of the upper lever is connected to the upper mold drive rod. The upper mold drive rod passes through the top plate of the frame and is fixedly connected to the upper mold assembly via a flange.

[0008] Furthermore, the lower mold drive assembly includes: a lower cam drive rod, a lower lever, and a lower mold drive rod. The upper end of the lower cam drive rod is connected to the cam follower and slides along the guide rail direction, while the lower end is connected to the lower lever via a pin. One end of the lower lever is connected to the lower mold drive rod, and the lower mold drive rod passes through the frame base plate and is fixedly connected to the lower mold assembly via a flange.

[0009] Furthermore, the upper mold drive rod includes: an upper flange sleeve vertically fixed to the lower surface of the frame top plate by bolts; an upper sliding sleeve embedded in the inner hole of the upper flange sleeve; an upper mandrel provided inside the upper sliding sleeve; a groove provided between the upper mandrel and the upper sliding sleeve near the upper lever; an upper spring provided in the groove; an upper mandrel guide provided in the gap between the upper mandrel and the upper sliding sleeve; and an upper sliding sleeve guide provided between the upper flange sleeve and the upper sliding sleeve.

[0010] Furthermore, one end of the upper mandrel is provided with a connector, the connector is provided with a groove, the upper lever is embedded in the groove and connected to the upper mandrel by a pin, and the groove restricts the angular direction of the upper lever, the other end is inserted into the inner cavity of the upper sliding sleeve, and the outer wall of the upper sliding sleeve fits against the upper sliding sleeve to guide and restrict radial deflection.

[0011] Furthermore, the lower mold drive rod includes: a lower flange sleeve vertically fixed to the upper surface of the frame base plate by bolts; a lower sliding sleeve embedded in the inner hole of the lower flange sleeve; a lower mandrel provided inside the lower sliding sleeve; a groove provided between the lower mandrel and the lower sliding sleeve near the lower lever; a lower spring provided in the groove; a lower mandrel guide provided at the gap between the lower mandrel and the lower sliding sleeve; and a lower sliding sleeve guide provided between the lower flange sleeve and the lower sliding sleeve.

[0012] Furthermore, one end of the lower spindle is provided with a connector, and the connector is provided with a groove. The lower lever is embedded in the groove and fixedly connected to the lower spindle by a pin. The groove restricts the angular direction of the lower lever. The other end is inserted into the inner cavity of the lower sliding sleeve. The outer wall of the lower sliding sleeve fits against the lower sliding sleeve and guides and restricts radial deflection.

[0013] Furthermore, the upper mold assembly includes: an upper mold connected to a mold connecting guide rail, an upper mold clamping block on the upper mold, and the upper mold clamping block being vertically and vertically connected to the upper mold.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model controls the motion law and motion state of the upper and lower dies through a cam curve. When the cam rotates, the action logic between the upper and lower dies moves completely according to the trajectory planned by the curve, thereby improving the speed of each action of the upper and lower dies and ensuring the pressure when the mold is closed, achieving the function of stable high-speed molding. At the same time, the matching mold adopts an open cavity design, avoiding copper wire stripping during high-speed demolding. In addition, the upper and lower dies are connected by a high-precision guide rail, which ensures the accuracy and motion stability between the upper and lower dies at the component level, ensuring the molding quality. Furthermore, the cam assembly... The dual-sided programmable cam grooves precisely control the timing of reverse motion. Then, the mold connecting guide rail, mandrel guide, and sliding sleeve guide forcefully constrain the relative motion trajectory of the upper and lower molds, eliminating the cumulative error of the independent guide pillar structure. Tests show that the spring energy storage system absorbs more than 60% of the instantaneous impact force, and the peak load is reduced to 40% of that of traditional molds, further protecting the mold's service life and reducing the probability of cutting edge breakage. Finally, the stroke of the cam follower is amplified by levers, thereby optimizing the cam curve and reducing impact. The upper mold moving downward and the lower mold moving upward are synchronized by cam curve calculation, which can be guaranteed during the design to reduce the cycle time. The spring provides forming force and mitigates impact. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the upper mold assembly and the lower mold assembly of this utility model;

[0017] Figure 3 This is a cross-sectional view of the structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the cam assembly structure of this utility model;

[0019] Figure 5 This is a schematic diagram of the upper mold drive rod structure of this utility model;

[0020] Figure 6 This is a flowchart illustrating the structure of the upper mold assembly and the working process of the lower mold assembly of this utility model.

[0021] In the diagram: 1. Main frame; 2. Drive motor; 3. Reducer; 4. Upper mold assembly; 401. Upper mold; 402. Upper mold clamping block; 5. Lower mold assembly; 6. Cam assembly; 601. Forming cam; 602. Connecting shaft; 603. Bearing chamber; 604. Cam follower; 7. Upper mold drive assembly; 701. Upper cam drive rod; 702. Upper mold drive rod; 703. Upper flange sleeve; 7031. Upper sliding sleeve; 7032. Upper mandrel; 7033. Upper spring; 7034. Upper mandrel guide; 7035. Upper sliding sleeve guide; 7036. Lower mold drive assembly; 8. Lower cam drive rod; 801. Lower lever; 802. Lower mold drive rod; 803. Lower flange sleeve; 8031. Lower sliding sleeve; 8032. Lower mandrel; 8033. Lower spring; 8034. Lower mandrel guide; 8035. Lower sliding sleeve guide; 8036. Mold connecting guide rail; 9. Detailed Implementation

[0022] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings and specific embodiments.

[0023] Please refer to Figure 1-6 This utility model provides a 3D linear high-speed stamping die structure, including: a main frame 1, which is a cuboid structure with an opening on the front side and a drive motor 2 and a reducer 3 fixed on the rear wall; an upper die assembly 4 is provided on the lower surface of the top plate of the main frame 1, a lower die assembly 5 is provided on the upper surface of the bottom plate, and a cam assembly 6 is provided on the inner side of the rear wall, with the input end of the cam assembly 6 connected to the output end of the reducer 3 via a transmission shaft; an upper die drive assembly 7 is provided on the upper surface of the top plate of the main frame 1, and a lower die drive assembly 8 is provided on the lower surface of the bottom plate, with one end of the upper die drive assembly 7 connected to the upper die assembly 4 and the other end connected to the cam assembly 6, and one end of the lower die drive assembly 8 connected to the lower die assembly 5 and the other end connected to the cam assembly 6; a die connecting guide rail 9 is fixed between the left and right side walls inside the main frame 1, and the die connecting guide rail 9 rigidly connects the upper die assembly 4 and the lower die assembly 5, constraining the die position and the position of the die closing surface.

[0024] The main frame 1 provides a rigid support platform with a front opening for easy copper wire entry and exit. It integrates all functional modules to ensure structural stability and eliminate positioning deviations caused by high-speed vibration. The mold connecting guide rail 9 rigidly connects the upper and lower mold components, constrains the position of the upper mold 4 and the mold closing position, ensures the stability of the mold closing position, and improves the mold closing accuracy. The cam assembly 6 drives the cam through a single axis, and the upper and lower mold cam curves are arranged on both sides of the cam to ensure synchronous movement of the upper and lower molds.

[0025] The cam assembly 6 includes: a forming cam 601, a connecting shaft 602, and a bearing chamber 603 arranged coaxially. The connecting shaft 602 passes through the central hole of the forming cam 601 and is embedded in the inner cavity of the bearing chamber 603. The forming cam 601 is press-fitted onto the middle section of the connecting shaft 602. Independent cam grooves are opened on both sides of the forming cam 601, and a cam follower 604 is embedded in the cam groove.

[0026] Among them, the forming cam 601 has two independent cam grooves. According to the requirements, the cam curve can be designed with the follower motion form of sine / cosine acceleration law, etc., to drive the upper and lower dies respectively, avoiding motion impact and reducing mold closing impact force. The connecting shaft 602 is interference-fitted to the cam 601 to ensure coaxiality and transmit the motor torque to the cam groove without loss. The cam follower 604, roller bearing or needle roller bearing is fitted into the cam groove to convert the rotational motion into linear motion. The rolling of the bearing reduces friction loss and improves the service life of the equipment.

[0027] The upper mold drive assembly 7 includes an upper cam drive rod 701, an upper lever 702, and an upper mold drive rod 703. The lower end of the upper cam drive rod 701 is connected to the cam follower 604 and slides along the guide rail. The upper end is connected to the upper lever 702 via a pin. One end of the upper lever 702 is connected to the upper mold drive rod 703. The upper mold drive rod 703 passes through the top plate of the frame and is fixedly connected to the upper mold assembly 4 via a flange.

[0028] The lower mold drive assembly 8 includes: a lower cam drive rod 801, a lower lever 802, and a lower mold drive rod 803. The upper end of the lower cam drive rod 801 is connected to the cam follower 604 and slides along the guide rail direction. The lower end is connected to the lower lever 802 through a pin. One end of the lower lever 802 is connected to the lower mold drive rod 803. The lower mold drive rod 803 passes through the frame base plate and is fixedly connected to the lower mold assembly 5 through a flange.

[0029] The upper mold drive rod 703 includes: an upper flange sleeve 7031 vertically fixed to the lower surface of the frame top plate by bolts; an upper sliding sleeve 7032 embedded in the inner hole of the upper flange sleeve 7031; an upper mandrel 7033 provided inside the upper sliding sleeve 7032; a groove provided between the upper mandrel 7033 and the upper sliding sleeve 7032 near the upper lever 702; an upper spring 7034 provided in the groove; an upper mandrel guide 7035 provided in the gap between the upper mandrel 7033 and the upper sliding sleeve 7032; and an upper sliding sleeve guide 7036 provided between the upper flange sleeve 7031 and the upper sliding sleeve 7032.

[0030] One end of the upper spindle 7033 is provided with a connector, and the connector is provided with a groove. The upper lever 702 is embedded in the groove and connected to the upper spindle 7033 by a pin. The groove restricts the angular direction of the upper lever 702. The other end is inserted into the inner cavity of the upper sliding sleeve 7032. The outer wall of the upper sliding sleeve 7032 fits against the upper sliding sleeve guide 7036 to restrict radial deflection.

[0031] The lower mold drive rod 803 includes: a lower flange sleeve 8031 ​​vertically fixed to the upper surface of the frame base plate by bolts; a lower sliding sleeve 8032 embedded in the inner hole of the lower flange sleeve 8031; a lower mandrel 8033 provided inside the lower sliding sleeve 8032; a groove provided between the lower mandrel 8033 and the lower sliding sleeve 8032 near the lower lever 802; a lower spring 8034 provided in the groove; a lower mandrel guide 8035 provided in the gap between the lower mandrel 8033 and the lower sliding sleeve 8032; and a lower sliding sleeve guide 8036 provided between the lower flange sleeve 8031 ​​and the lower sliding sleeve 8032.

[0032] One end of the lower spindle 8033 is provided with a connector, and the connector is provided with a groove. The lower lever 802 is embedded in the groove and fixedly connected to the lower spindle 8033 by a pin. The groove restricts the angular direction of the lower lever 802. The other end is inserted into the inner cavity of the lower sleeve 8032. The outer wall of the lower sleeve 8032 fits against the lower sleeve guide 8036 to restrict radial deflection.

[0033] The mandrel 7033 / 8033 directly transmits the lever thrust, driving the sliding sleeve movement; the spring compression / release carrier, with a groove restricting the angular movement of the lower lever 802, prevents rotational offset; the sliding sleeve 7032 / 8032 transmits the mandrel thrust to the mold; the outer wall is guided and constrained by the sliding sleeve, suppressing radial vibration; the interference fit on the flange ensures zero-loss power transmission; the spring 7034 / 8034 absorbs impact energy during stamping, reducing rigid collisions; the precision track on the inner wall of the flange, guided by the sliding sleeve 7036 / 8036, eliminates radial sway of the sliding sleeve, ensuring vertical force application. Flange sleeves 7031 / 8031 secure the entire drive rod system, providing a rigid support reference. During stamping, the mandrel is pushed into the inner cavity of the sliding sleeve by lever force, compressing the spring 7034 / 8034 and simultaneously pushing the sliding sleeve towards the mold. The mandrel and sliding sleeve are pre-compressed and move synchronously. When they contact the copper wire, the spring will be slightly compressed by 0.1-0.2mm during stamping, ensuring forming force while reducing impact and impact at the cam follower and cam groove, thus improving stability. The sliding sleeve transmits power to the upper / lower mold assembly through the flange to complete the material stamping. During the return stroke, the spring returns with a slight deformation as the mandrel returns. The cam rotates to the return curve segment, and the cam follower 604 drives the drive rod to move in the opposite direction. The guide system ensures that the mandrel and sliding sleeve do not wobble during high-speed return, and the mold accurately resets along the guide rail 9.

[0034] The upper mold assembly 4 includes: an upper mold 401 connected to a mold connecting guide rail 9, an upper mold clamping block 402 provided on the upper mold 401, and the upper mold clamping block 402 being vertically and vertically connected to the upper mold 401.

[0035] When using this utility model, firstly, the front opening of the main frame 1 is open, the drive motor 2 and reducer 3 are stopped, the forming cam 601 of the cam assembly 6 is in the 0° starting position, the upper mold 401 is fixed on the sliding key on the side of the main frame, the upper mold clamping block 402 is suspended on the upper mold forming assembly, the lower mold 5 is installed on the lower mold drive assembly 7, and the upper mold clamping block 402 is raised to the upper limit position through the copper sleeve, linear bearing, direct connection and lubrication hole, etc., and the copper wire is transported to the forming copper wire transport position by the transport structure, and then arranged by the arrangement The pneumatic grippers on the main frame clamp the copper wire, the upper mold clamping block 402 descends, and the lower mold 5 rises simultaneously. The two meet at the copper wire transport position, clamping the copper wire. At this point, the pneumatic grippers on the main frame 1 release. Then, the upper mold clamping block 402 and the lower mold rise synchronously, finally closing at the mold closing surface of the upper mold 401 and maintaining pressure for a period of time. Afterward, they descend synchronously to the copper wire transport position, waiting for the pneumatic grippers on the main frame 1 to clamp the formed copper wire. After clamping, the upper and lower molds return to their respective positions, and the transport structure removes the copper wire, completing the forming process. During the forming process, the cam groove pushes the cams to move upward and downward respectively. The upper cam moves upward, and the lower cam moves downward. Through lever reversal, the upper mold clamping block 402 descends, and the lower mold rises. During the mold closing process, the upper mold first descends, then rises, then descends again, and then rises again; the lower mold first rises and then descends. See details... Figure 6 .

[0036] Although embodiments of the present invention have been shown and described, it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, it will be understood by those skilled in the art that all other embodiments obtained by making various changes, modifications, substitutions and alterations to these embodiments without departing from the principles and spirit of the present invention and without creative effort are within the scope of protection of the present invention.

Claims

1. A 3D linear high-speed stamping die structure, characterized in that, include: The main frame (1) is a cuboid structure with an opening on the front side and a drive motor (2) and a reducer (3) fixed on the rear wall. The upper mold assembly (4) is provided on the lower surface of the top plate of the main frame (1), the lower mold assembly (5) is provided on the upper surface of the bottom plate, and the cam assembly (6) is provided on the inner side of the rear wall. The input end of the cam assembly (6) is connected to the output end of the reducer (3) through a transmission shaft. The upper mold drive assembly (7) is provided on the upper surface of the top plate of the main frame (1), and the lower mold drive assembly (8) is provided on the lower surface of the bottom plate. One end of the upper mold drive assembly (7) is connected to the upper mold assembly (4), and the other end is connected to the cam assembly (6). One end of the lower mold drive assembly (8) is connected to the lower mold assembly (5), and the other end is connected to the cam assembly (6). A mold connecting guide rail (9) is fixed between the left and right side walls inside the main frame (1). The mold connecting guide rail (9) rigidly connects the upper mold assembly (4) and the lower mold assembly (5), constraining the mold position and the mold closing surface position.

2. The 3D linear high-speed stamping die structure according to claim 1, characterized in that, The cam assembly (6) includes: a forming cam (601), a connecting shaft (602), and a bearing chamber (603) arranged coaxially. The connecting shaft (602) passes through the center hole of the forming cam (601) and is embedded in the inner cavity of the bearing chamber (603). The forming cam (601) is press-fitted onto the middle section of the connecting shaft (602). Independent cam grooves are opened on both sides of the forming cam (601), and cam followers (604) are embedded in the cam grooves.

3. The 3D linear high-speed stamping die structure according to claim 2, characterized in that, The upper mold drive assembly (7) includes: an upper cam drive rod (701), an upper lever (702) and an upper mold drive rod (703). The lower end of the upper cam drive rod (701) is connected to the cam follower (604) and slides along the guide rail direction. The upper end is connected to the upper lever (702) through a pin. One end of the upper lever (702) is connected to the upper mold drive rod (703). The upper mold drive rod (703) passes through the top plate of the frame and is fixedly connected to the upper mold assembly (4) through a flange.

4. The 3D linear high-speed stamping die structure according to claim 3, characterized in that, The lower mold drive assembly (8) includes: a lower cam drive rod (801), a lower lever (802) and a lower mold drive rod (803). The upper end of the lower cam drive rod (801) is connected to the cam follower (604) and slides along the guide rail direction. The lower end is connected to the lower lever (802) through a pin. One end of the lower lever (802) is connected to the lower mold drive rod (803). The lower mold drive rod (803) passes through the frame base plate and is fixedly connected to the lower mold assembly (5) through a flange.

5. The 3D linear high-speed stamping die structure according to claim 4, characterized in that, The upper mold drive rod (703) includes: an upper flange sleeve (7031) vertically fixed to the lower surface of the frame top plate by bolts; an upper sliding sleeve (7032) embedded in the inner hole of the upper flange sleeve (7031); an upper mandrel (7033) provided inside the upper sliding sleeve (7032); a groove provided between the upper mandrel (7033) and the upper sliding sleeve (7032) near the upper lever (702); an upper spring (7034) provided in the groove; an upper mandrel guide (7035) provided in the gap between the upper mandrel (7033) and the upper sliding sleeve (7032); and an upper sliding sleeve guide (7036) provided between the upper flange sleeve (7031) and the upper sliding sleeve (7032).

6. The 3D linear high-speed stamping die structure according to claim 5, characterized in that, One end of the upper mandrel (7033) is provided with a connector, and the connector is provided with a groove. The upper lever (702) is embedded in the groove and connected to the upper mandrel (7033) by a pin. The groove restricts the angular direction of the upper lever (702). The other end is inserted into the inner cavity of the upper sliding sleeve (7032). The outer wall of the upper sliding sleeve (7032) fits against the upper sliding sleeve guide (7036) to restrict radial deflection.

7. The 3D linear high-speed stamping die structure according to claim 6, characterized in that, The lower mold drive rod (803) includes: a lower flange sleeve (8031) vertically fixed to the upper surface of the frame base plate by bolts; a lower sliding sleeve (8032) embedded in the inner hole of the lower flange sleeve (8031); a lower mandrel (8033) provided inside the lower sliding sleeve (8032); a groove provided between the lower mandrel (8033) and the lower sliding sleeve (8032) near the lower lever (802); a lower spring (8034) provided in the groove; a lower mandrel guide (8035) provided in the gap between the lower mandrel (8033) and the lower sliding sleeve (8032); and a lower sliding sleeve guide (8036) provided between the lower flange sleeve (8031) and the lower sliding sleeve (8032).

8. The 3D linear high-speed stamping die structure according to claim 7, characterized in that, One end of the lower spindle (8033) is provided with a connector, and the connector is provided with a groove. The lower lever (802) is embedded in the groove and fixedly connected to the lower spindle (8033) by a pin. The groove restricts the angular direction of the lower lever (802). The other end is inserted into the inner cavity of the sliding sleeve (8032). The outer wall of the sliding sleeve (8032) fits against the sliding sleeve guide (8036) to restrict radial deflection.

9. The 3D linear high-speed stamping die structure according to claim 1, characterized in that, The upper mold assembly (4) includes: an upper mold (401) connected to a mold connecting guide rail (9), an upper mold clamping block (402) provided on the upper mold (401), and the upper mold clamping block (402) being vertically and vertically connected to the upper mold (401).

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