Simple punching press

Abstract

The utility model discloses a simple and easy type punch press, include: frame assembly, and the parallel setting of upper support plate and lower support plate in upper and lower orientation, the guide pillar sliding matching of upper support plate is arranged in the guide pillar guide bush of lower support plate, the upper die assembly is including the upper module of fixed mounting in upper support plate, and the inside activity of upper module is embedded with secondary punching plate, and the punch protruding die is provided with to the secondary punching plate downward, and the secondary punching plate is supported through the sliding column activity on upper support plate, the lower die assembly includes lower module and female die, and the clearance fit of lower module and female die, and the blanking passage has on female die, and the blanking passage is communicated through the outlet on lower support plate, and the elastic connection of lower module and lower support plate is along the axial direction. The upper die design of punch press through outer ring pre -pressing sleeve collection inner ring can independent descending punch protruding die realizes the time sequence control of secondary action, and it is a kind of simple and easy high -efficient stamping equipment with clever structure, function integration.

Description

Technical Field

[0001] This utility model relates to stamping machines, and more particularly to a simple stamping machine for sheet metal stamping. Background Technology

[0002] In existing simple or small blanking, punching, or sheet-punching equipment, a prominent technical challenge lies in the difficulty of effectively achieving the ideal process sequence of "first fully clamping the sheet material, then performing precise punching" under a single drive. The current common practice is:

[0003] In integrated die synchronous stamping, the die's blank holder (outer ring) and the punching punch (inner ring) are rigidly connected or move synchronously, contacting and acting on the sheet metal simultaneously during a single downward stroke. This synchronous force application means that at the moment the punch penetrates the sheet metal, the surrounding sheet metal has not yet been fully compressed or released instantaneously. This easily leads to localized warping, slippage, or even tearing of the sheet metal, resulting in quality problems such as large burrs on the punched edges, poor surface finish, and unstable dimensional accuracy, seriously affecting the product qualification rate.

[0004] Dual-drive solutions are also unsuitable. To address timing issues, some equipment attempts to use two independent drive systems to control the pressing and punching actions separately. While theoretically, pressing before punching can be achieved, this significantly increases the complexity of the equipment structure, manufacturing costs, and control difficulties, deviating from the design principles of "simple" equipment that prioritizes compact structure, low cost, and easy operation. It is particularly unsuitable for small-scale, low-cost production scenarios.

[0005] Therefore, for simple stamping equipment, there is an urgent need for a breakthrough structural design that can force and reliably realize the secondary action sequence of "pressing first, punching second" using only one drive source, fundamentally eliminating sheet deformation and hole edge quality defects caused by synchronous stamping, while maintaining the overall simplicity and low cost advantages of the equipment. Utility Model Content

[0006] To address the shortcomings of the aforementioned technologies, this utility model provides a simplified stamping press.

[0007] To solve the above technical problems, the technical solution adopted by this utility model is: a simple stamping and punching machine, comprising:

[0008] The frame assembly has an upper support plate and a lower support plate arranged parallel to each other at the top and bottom; the guide posts on the upper support plate are slidably matched and matched in the guide post sleeves of the lower support plate;

[0009] The upper mold assembly includes an upper module fixedly installed on an upper support plate. A secondary stamping plate is movably embedded inside the upper module. The secondary stamping plate has a punching punch protruding downward. The secondary stamping plate is movably supported by a sliding column on the upper support plate.

[0010] The lower mold assembly includes a lower module and a die. The lower module and the die are fitted with a clearance. The die has a blanking channel that passes through and connects to the discharge port on the lower support plate. The lower module and the lower support plate are elastically connected along the axial direction.

[0011] Furthermore, the upper module serves as the outer ring pre-press sleeve of the secondary stamping plate, and its initial position contacts the sheet material before the punching punch on the secondary stamping plate.

[0012] Furthermore, the punch and die have matching shapes with blanking channels at their centers; the end face of the secondary stamping plate matches the shape of the upper end face of the die.

[0013] Furthermore, the punching punch, blanking channel, and discharge port are coaxial.

[0014] Furthermore, the lower module is fitted with the die cavity with a clearance around the die cavity. The lower end of the lower module is connected to the annular support plate downward through multiple circumferentially evenly distributed springs. The annular support plate is interference-fitted around the die cavity and is fixedly connected to the lower support plate.

[0015] Furthermore, the sliding column forms a drive end connecting plate above the upper support plate, which connects to the drive end.

[0016] This utility model discloses a simple stamping press. The press achieves the timing control of secondary actions through the upper die design of the outer ring pre-pressure sleeve and the inner ring independently descending punching punch. Combined with the floating pressure ring of the lower die and the spring buffer / reset system, it completes the blanking and punching process efficiently, stably and with high quality, and effectively solves the problems of impact vibration and automatic unloading. It is a simple and efficient stamping equipment with ingenious structure and integrated functions. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0018] Figure 2 This is a side view of the present invention.

[0019] Figure 3 This is a partial structural diagram of the present utility model.

[0020] Figure 4 This is a cross-sectional schematic diagram of the present invention.

[0021] In the diagram: 1. Upper support plate; 2. Lower support plate; 3. Guide post; 4. Guide post guide sleeve; 5. Upper module; 6. Secondary stamping plate; 7. Punching punch; 8. Sliding post; 9. Lower module; 10. Die; 11. Blanking channel; 12. Discharge port; 13. Spring; 14. Annular support plate; 15. Drive end connecting plate. Detailed Implementation

[0022] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0023] In this embodiment, a simplified blanking and punching press with secondary stamping and shock absorption functions includes a frame assembly, an upper die assembly, and a lower die assembly. The frame assembly provides a rigid framework and precise guidance for the entire machine. The upper die assembly, through the combination of outer ring pre-pressing and inner ring punching secondary action, first compacts the sheet metal before completing the punching. The lower die assembly carries the die cavity and floating pressure ring, realizing blanking, automatic unloading, and shock absorption. Through frame guidance, the upper die applies force, and the lower die bears the force, collaboratively completing the continuous "press-punch-discharge" process. The specific structural configuration is as follows:

[0024] like Figure 1 The frame assembly shown has an upper support plate 1 and a lower support plate 2 arranged parallel to each other at the top and bottom. The guide post 3 on the upper support plate 1 is slidably matched and matched in the guide post sleeve 4 of the lower support plate 2. The upper support plate 1 and the lower support plate 2 are arranged in parallel, and the distance between them determines the maximum opening height. The shape of the two plates adopts a rectangular plate structure. In this embodiment, the plates have an external dimension of 160mm in length, 120mm in width, and 20mm in thickness. After the guide post passes through the upper support plate, it slides with the guide post sleeve in the lower support plate. The upper support plate 1 moves axially against gravity or under the influence of gravity to realize the "one-time action" of pre-compression. At the same time, the guide post sleeve provides a reference positioning for the guide post.

[0025] Combination Figure 2 and Figure 3 The upper die assembly includes an upper module 5 fixedly mounted on the upper support plate 1, which acts as an outer pre-compression sleeve, compacting the sheet metal first. The lower end face of the entire module contacts the sheet metal first, firmly pressing it down to prevent arching, slippage, or tearing, creating a "vibration-free and deformation-free" static pressure zone for subsequent punching. The upper module 5 serves as the outer pre-compression sleeve for the secondary stamping plate 6. The secondary stamping plate 6 is movably embedded inside the upper module 5, and the secondary stamping plate 6 has a punching punch 7 protruding downwards. Note that the initial position of the upper module 5 contacts the sheet metal before the punching punch 7 on the secondary stamping plate 6. The secondary stamping plate 6 is movably supported by a sliding column 8 on the upper support plate 1. This sliding track is located on the upper support plate 1, ensuring that the punching punch 7 is always perpendicular to the sheet surface, avoiding edge deviation. The sliding column 8 forms a drive end connecting plate 15 above the upper support plate 1, which can be a manual lever, a pneumatic-hydraulic booster cylinder, or an integrated module combining a servo motor and a ball screw. Figure 3As shown, the secondary stamping plate 6 presses down to form a "secondary action". Even after the upper module 5 has stopped (the material is in place), the secondary stamping plate 6 can continue to move downward to complete the punching. This is equivalent to compressing the "two-step process" into one step, eliminating the need for two sets of drives. The punching punch 7 is directly connected to the lower part of the secondary stamping plate 6, and the two move as a whole, eliminating the assembly gap of the traditional split punch and improving rigidity.

[0026] like Figure 1 The lower mold assembly shown includes a lower module 9 and a die 10. The lower module 9 and the die 10 are fitted with a clearance. The die 10 has a material discharge channel 11, which passes through and connects to the discharge port 12 on the lower support plate 2. The lower module 9 and the lower support plate 2 are elastically connected along the axial direction.

[0027] In other embodiments, the punching punch 7 can be replaced by a threaded connection to the upper module 5, facilitating quick overall replacement.

[0028] Note that, as Figure 3 The punch 7 and die 10 shown have matching shapes with a blanking channel 11 at their center; the end face of the secondary stamping plate 6 matches the shape of the upper end face of the die 10. The punch 7, blanking channel 11, and discharge port 12 are coaxial.

[0029] The lower module 9 is fitted with the die 10 around its periphery with a clearance fit. The lower end of the lower module 9 is connected downwards to an annular support plate 14 via multiple circumferentially evenly distributed springs 13. The material discharge channel 11, the discharge port 12, and the scrap box are aligned to form a vertical channel. The punched scrap slides directly down under gravity, without jamming or chip accumulation, ensuring a clean cutting edge and stable hole quality for the next punching pass. The annular support plate 14 is interference-fitted to the periphery of the die 10 and is also fixedly connected to the lower support plate 2. During punching, the springs are compressed, absorbing peak impact force and reducing the impact of instantaneous reaction force on the frame; during the return stroke, the springs release energy, lifting the lower module 9 and helping the sheet metal automatically detach from the die.

[0030] In summary, the simple blanking and punching press with secondary stamping and shock absorption functions can realize continuous processes of pressing, punching and blanking, and integrates shock absorption and buffering functions.

[0031] During the blanking stage, the upper support plate's own weight pushes the sliding column 8, which in turn drives the entire upper die assembly downwards. The lower end face of the upper module 5 first contacts the sheet metal to be processed. The upper module 5 firmly presses the sheet metal onto the lower die assembly, preventing the sheet metal from arching, slipping, or tearing during subsequent punching, creating a stable "static pressure zone" for punching. At this time, the punching punch 7 on the secondary stamping plate 6 has not yet contacted the sheet metal or has just contacted it but has not yet applied force for punching. The guide post 3 slides within the guide post sleeve 4, providing precise guidance.

[0032] During the punching stage, force is applied from the drive end. Since the upper module 5 has already clamped the sheet metal and stopped descending (or the resistance has increased significantly), the secondary stamping plate 6 can continue to descend independently on the sliding column 8 of the upper support plate 1 (performing a "secondary action"). The secondary stamping plate 6 drives the punching punch 7 below it to forcefully descend downward, performing a punching operation on the clamped sheet metal. The circular scrap (core) generated by punching falls through the blanking channel 11 in the center of the die 10.

[0033] During the blanking stage, the punching waste (core) falls directly and vertically into the waste box below through the blanking channel 11 of the die 10 and the discharge port 12 of the lower support plate 2 under the action of gravity, realizing automatic material discharge and avoiding material jamming and chip accumulation.

[0034] This patent offers the following advantages: Under a single drive, the three steps of "pressing-punching-unloading" are completed continuously, resulting in high efficiency. Pressing before punching effectively prevents sheet metal deformation, wrinkling, slippage, and tearing, ensuring stable hole edge quality; the vertical unloading channel prevents waste material from getting stuck and keeps the cutting edge clean. Compared to solutions requiring two independent drives, the structure is simpler and more compact (only one drive is needed for the secondary action), and the integrated punch design provides good rigidity. The spring buffer system effectively absorbs the impact force of stamping, and the spring return force automatically lifts the lower module, allowing the sheet metal to automatically detach from the die.

[0035] The above embodiments are not intended to limit the present utility model, nor is the present utility model limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the technical solution of the present utility model are also within the protection scope of the present utility model.

Claims

1. A simple stamping and punching machine, characterized in that, include: The frame assembly has an upper support plate (1) and a lower support plate (2) arranged parallel to each other at the top and bottom; the guide post (3) on the upper support plate (1) is slidably matched in the guide post sleeve (4) of the lower support plate (2); The upper mold assembly includes an upper module (5) fixedly installed on the upper support plate (1). A secondary stamping plate (6) is movably embedded inside the upper module (5). The secondary stamping plate (6) is provided with a punching punch (7) protruding downward. The secondary stamping plate (6) is movably supported by a sliding column (8) on the upper support plate (1). The lower mold assembly includes a lower module (9) and a die (10). The lower module (9) and the die (10) are fitted with a clearance. The die (10) has a material discharge channel (11). The material discharge channel (11) passes through and connects to the discharge port (12) on the lower support plate (2). The lower module (9) and the lower support plate (2) are elastically connected along the axial direction.

2. The simplified stamping press according to claim 1, characterized in that: The upper module (5) serves as the outer ring pre-press sleeve of the secondary stamping plate (6), and the initial position of the upper module (5) contacts the sheet material before the punching punch (7) on the secondary stamping plate (6).

3. The simplified stamping press according to claim 1 or 2, characterized in that: The punch (7) and die (10) are provided with a blanking channel (11) in the center with matching shapes; the end face of the secondary stamping plate (6) is matched with the upper end face of the die (10).

4. The simplified stamping press according to claim 3, characterized in that: The punching punch (7), blanking channel (11) and discharge port (12) are coaxial.

5. The simplified stamping press according to claim 4, characterized in that: The lower module (9) is in clearance fit with the die (10) on the periphery of the die (10). The lower end of the lower module (9) is connected to the annular support plate (14) downward through multiple circumferentially evenly arranged springs (13). The annular support plate (14) is interference fit on the periphery of the die (10), and the annular support plate (14) is fixedly connected to the lower support plate (2).

6. The simplified stamping press according to claim 5, characterized in that: The sliding column (8) forms a drive end connecting plate (15) above the upper support plate (1) to connect the drive end.

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