A dual-station pneumatic punch press

Abstract

This application provides a dual-station pneumatic punch press, comprising: a frame with a base mounted on it; a punching table including a second punching plate fixedly mounted above it, and a second template mounted on the second punching plate; a sliding assembly disposed between the punching table and the base to achieve horizontal movement between the punching table and the base; and a punching assembly including a cylinder and a first punching plate integrally connected to the cylinder, the first punching plate being mounted on a first template. This application achieves a breakthrough improvement in production efficiency, processing accuracy, and safety performance through an innovatively designed dual-station sliding rail pneumatic punching system. The dual-station parallel operation architecture allows workpiece clamping and punching processes to be performed simultaneously. Combined with a servo-driven switching mechanism, the overall processing cycle for a single piece is compressed. Simultaneously, the early intervention positioning via long guide columns eliminates the risk of mold off-center loading, improving the yield rate of stamped parts. Compared to traditional punching equipment, the low-pressure pneumatic system consumes less energy and has lower maintenance costs.

Description

Technical Field

[0001] This utility model relates to the field of metal stamping equipment technology, specifically a dual-station pneumatic punch press capable of continuous operation, suitable for batch stamping and forming of electronic connectors, small hardware parts and other processing scenarios. Background Technology

[0002] Traditional single-station punch presses require machine shutdown for mold changes, and this is mostly done using electric punch presses. Traditional punch press equipment often uses hydraulic drive or mechanical linkage structure, which has the following drawbacks:

[0003] Increased oil temperature in the hydraulic system causes drift in stroke accuracy; mechanical shifting mechanisms have high impact force and short guide rail wear cycles; template alignment relies on manual fine-tuning, and each adjustment takes a long time, resulting in reduced production efficiency.

[0004] Single-station punch presses require stopping after each punching operation for workpiece loading / unloading and mold replacement, with actual processing time accounting for only 30%-40% of the cycle time. Taking the mass production of small hardware parts as an example, the overall processing time for a single piece often exceeds 15 seconds, severely restricting production capacity.

[0005] Traditional stamping equipment is expensive due to its complex structure and heavy weight. It also has high energy consumption, making operation complicated. During stamping, the machine is noisy, lacks protective devices, has a high failure rate, and poses significant safety risks. It also increases the difficulty for maintenance personnel to inspect and repair the equipment.

[0006] Therefore, there is an urgent need to develop an automatic, energy-saving, pneumatic dual-station punch press that is easy to operate, has low cost and maintenance difficulty, and solves the above problems. Utility Model Content

[0007] This application provides a dual-station pneumatic punch press to solve the problems of complex and heavy machine body, high energy consumption, high maintenance cost and great safety hazards in existing punch presses.

[0008] This application adopts the following technical solution: a dual-station pneumatic punch press, comprising:

[0009] A frame, on which a base is mounted;

[0010] A stamping table, including a second stamping plate fixedly disposed above it, and a second template disposed on the second stamping plate;

[0011] A sliding assembly is disposed between the stamping table and the base to enable horizontal movement between the stamping table and the base;

[0012] A stamping assembly is fixedly mounted on the upper end of the frame. It includes a cylinder and a first stamping plate integrally connected to the cylinder. The first stamping plate is equipped with a first template.

[0013] When the first stamping plate and the second stamping plate are aligned vertically, the cylinder is activated and drives the first template to approach the second template to perform a stamping operation on the workpiece.

[0014] Preferably, the second stamping plate is provided with guide posts that extend in the vertical direction.

[0015] Preferably, the first stamping plate is also provided with a guide hole corresponding to the guide post, and the guide post can be slidably inserted into the guide hole.

[0016] Preferably, the sliding assembly includes a slide rail fixedly mounted on the upper end of the base, and the stamping table is slidably mounted on the upper end of the slide rail.

[0017] Preferably, the sliding assembly further includes a drive module, which is mounted on the base to drive the stamping table to move horizontally.

[0018] Preferably, the pneumatic punch press is provided in two sets, and the guide columns and guide holes are configured in four sets.

[0019] Preferably, it also has a warning light that flashes when the stamping is completed.

[0020] This utility model achieves a breakthrough improvement in production efficiency, processing accuracy, and safety performance through an innovatively designed dual-station sliding rail pneumatic stamping system. Specifically, the dual-station parallel operation architecture allows workpiece clamping and stamping processes to be performed simultaneously. Combined with a servo-driven positioning mechanism, the overall processing cycle for a single piece is compressed. Furthermore, the early intervention positioning via long guide columns eliminates the risk of die misalignment, ensuring that the stamping position accuracy is stable at ±0.02mm, thereby improving the yield rate of stamped parts. In terms of energy consumption, the low-pressure pneumatic system used in this application consumes less energy and has lower maintenance costs compared to hydraulic equipment. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings of the embodiments will be briefly described below. Obviously, the drawings described below only relate to some embodiments of this application, and are not intended to limit this application.

[0022] Figure 1 This is a schematic diagram of the appearance of this application:

[0023] Figure 2 This is an isometric view of this application;

[0024] Figure 3 It is in this application Figure 1 The main view;

[0025] Figure 4 It is in this application Figure 1 The left view.

[0026] Explanation of reference numerals in the attached figures:

[0027] 10. Rack;

[0028] 20. Base;

[0029] 30. Stamping table; 31. Second stamping plate; 32. Guide column; 33. Second template:

[0030] 40. Sliding component; 41. Slide rail; 42. Drive module:

[0031] 50. Stamping assembly; 51. Cylinder; 52. First stamping plate; 53. First template; 54. Guide hole;

[0032] 60. Warning lights. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the application will be further described in detail below with reference to the accompanying drawings. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0034] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0035] Unless otherwise defined, the technical or scientific terms used in this patent document shall have the ordinary meaning understood by a person skilled in the art to which this application pertains. The terms "first," "second," and similar terms used in this patent specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms "an," "a," or "the" do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms "comprising" or "including" indicate that the element or object preceding "comprising" encompasses the element or object listed following "comprising" or its equivalents, and do not exclude other elements or objects. Terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" are used only to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly. These terms are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0036] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0037] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, features in the following embodiments can be combined with each other.

[0038] Example 1:

[0039] This utility model achieves a significant reduction in stamping die-changing time and a stamping position repeatability accuracy of ±0.02mm through an innovative combination of a modular pneumatic system and a sliding rail-type workstation switching mechanism, thereby increasing the effective utilization rate of the equipment to over 85%.

[0040] Reference Figures 1-4 The basic structure of this equipment includes: the frame (10) is made of Q235B steel plate welded into a frame structure, and M20 anchor bolt mounting holes can be set at the bottom of the equipment to fix the frame.

[0041] The base (20) is fixed to the middle platform of the frame by high-strength bolts, and its upper surface has a precision milled flatness of ≤0.05mm / m.

[0042] The stamping table (30) is a 200×300×40mm cast iron platform, which is connected to the base (20) through four sets of linear sliding components (40). The slide rail (41) is preferably made of low-cost aluminum alloy. The second stamping plate (31) can be fixed to the stamping table (30) by positioning pins or by welding. The second template (33) is installed on the surface of the stamping table (30). The template is made of SKD11 mold steel with a hardness of HRC58-62.

[0043] The stamping assembly (50) includes an ISO6432 standard cylinder (51), preferably with a cylinder diameter of Φ80mm, a stroke of 150mm, and a working air pressure of 0.6MPa. The piston rod end of the cylinder is connected to the first stamping plate (52) via a flange. The first template (53) is detachably installed below the stamping plate. When the drive module (42) drives the stamping table to make the deviation between the center axis of the second template (33) and the first template (53) <0.3mm, the cylinder (51) is triggered to move downward for stamping.

[0044] As another preferred embodiment, a photoelectric sensor can be added to the equipment. When the stamping table causes the deviation of the center axis of the second template (33) from the first template (53) to be less than 0.3mm, the photoelectric sensor triggers the cylinder (51) to press down, thereby realizing the automatic stamping operation of the equipment.

[0045] In this technical solution: compared with the traditional dual-station hydraulic press, the pneumatic system response time is reduced from 500ms to 120ms, and energy consumption is reduced by 40%; the cost of the slide rail type switching mechanism is only 1 / 3 of that of the rotary table, and the maintenance cycle is extended to 2 years, which reduces the maintenance cost of the whole machine and significantly reduces the energy consumption of the equipment.

[0046] Example 2:

[0047] like Figure 1 As shown, based on Example 1, a precision guide is added for the stamping process, specifically: Φ20H7 guide holes (54) are machined at the four corners of the first stamping plate (52). Correspondingly, the second stamping plate (31) is provided with four Φ20g6 guide pillars (32), which are made of GCr15 bearing steel and have a hard chrome plated surface.

[0048] As a preferred embodiment, the length of the guide post (32) can be designed to be 1.5 times the stroke (225mm), and the end can be machined with a 15° guide cone angle. In the initial stage of stamping, the guide post (32) enters the guide hole (54) 25mm ahead of the template, and the template alignment accuracy is ensured by the H7 / g6 clearance fit. Lubricating grease is periodically injected into the guide hole (54).

[0049] In this technical solution: compared with similar equipment without a guide structure, the template misalignment rate is reduced from 3‰ to 0.1‰; the guide post-hole fit greatly shortens the mold installation time, and the equipment can be installed quickly without the need for professional debugging personnel.

[0050] Example 3: Automated workstation switching:

[0051] like Figure 3 , Figure 4 As shown, a servo drive module (42) is installed on the side of the base (20). A Panasonic MINAS A6 series 400W motor can be selected. The ball screw is connected through a coupling to realize the drive module (42) to drive the stamping table (30).

[0052] As an alternative implementation, a control system can be added to the equipment, and the coordinates of two workstations can be set simultaneously: workstation 1 (X=0mm) and workstation 2 (X=350mm). After the stamping is completed, the PLC issues a command to drive the servo motor to move the stamping table (30), with a positioning accuracy of ±0.01mm. Furthermore, in order to reduce equipment noise, hydraulic buffers can be set at both ends of the movement path to absorb the kinetic energy when the stamping table (30) stops moving.

[0053] The equipment can install two sets of punch press units side by side. The unit spacing is designed to be 800mm to meet the operating space requirements. The two sets of units share an air supply system, which is uniformly pressure regulated and filtered through a triple unit.

[0054] By adding a PLC control terminal, compared with the manual push-pull station method, the equipment switching speed is increased by 300% (switching is completed in 1.5 seconds), and the labor intensity of operators is reduced by 90%; servo positioning eliminates manual alignment errors.

[0055] Furthermore, a three-color warning light (60) is installed on the top of the frame, and the light body is linked with the PLC control module. When the stamping cycle ends, the PLC outputs a signal to make the yellow light flash 3 times; when the pressure sensor detects an abnormal overload, the red light flashes and is accompanied by a buzzer alarm.

[0056] In addition, to increase the safety of the equipment, safety protection devices can be added: a light curtain sensor is installed in the working area, and an emergency stop button is connected in series on the cylinder control circuit. When the light curtain sensor is triggered, the cylinder will immediately depressurize and return to its original position.

[0057] Workflow example:

[0058] 1. While workpieces are being clamped at station 1, stamping is being performed at station 2 (alternating operations).

[0059] 2. The stamping completion warning light flashes, and the servo system drives the stamping table to move;

[0060] 3. The guide post is inserted into the guide hole to complete the precision positioning;

[0061] 4. While station 2 is clamping, station 1 is performing stamping.

[0062] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A double station pneumatic punch press characterized in that, include: A frame, on which a base is provided; A stamping table includes a second stamping plate fixedly disposed above it, and a second template is disposed on the second stamping plate; A sliding assembly is disposed between the stamping table and the base to enable horizontal movement between the stamping table and the base; A stamping assembly is fixedly mounted on the upper end of the frame. It includes a cylinder and a first stamping plate integrally connected to the cylinder. The first stamping plate is equipped with a first template. When the first stamping plate and the second stamping plate are aligned vertically, the cylinder is activated and drives the first template to approach the second template to perform a stamping operation on the workpiece.

2. Double station pneumatic press according to claim 1, characterized in that The second stamping plate is evenly distributed with guide posts extending in the vertical direction.

3. Double station pneumatic press according to claim 2, characterized in that The first stamping plate is also provided with a guide hole corresponding to the guide post, and the guide post can be slidably inserted into the guide hole.

4. The dual-station pneumatic punch press according to claim 1, characterized in that, The sliding assembly includes a slide rail fixedly mounted on the upper end of the base, and the stamping table is slidably mounted on the upper end of the slide rail.

5. The dual-station pneumatic punch press according to claim 4, characterized in that, The sliding component also includes a drive module, which is mounted on the base to drive the stamping table to move horizontally.

6. The dual-station pneumatic punch press according to claim 3, characterized in that, The pneumatic punch press is provided in two sets, and the guide columns and guide holes are configured in four sets.

7. The dual-station pneumatic punch press according to claim 1, characterized in that, It also has a warning light that flashes when the stamping is completed.

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