External protection sheet metal punching device

Abstract

The utility model provides an external protection sheet metal punching device, which relates to the field of external protection sheet metal punching devices and comprises a worktable, a transmission mechanism, a support plate vertically mounted on one side of the worktable, a guide rail arranged on the support plate, a slider slidably arranged on the guide rail, a transmission mechanism connected to the upper end of the slider, and a punching cutter mounted at the lower end of the slider. The anti-pinch mechanism comprises a first connecting rod, a second connecting rod, a third connecting rod, a rocker and a connecting rod frame, the connecting rod frame is fixedly arranged on the guide rail, the lower end of the first connecting rod is hinged to one side of the lower end of the sliding block, the upper end of the first connecting rod is hinged to one end of the second connecting rod, the other end of the second connecting rod is connected with the upper end of the third connecting rod, and the upper end of the third connecting rod is hinged to the center of the connecting rod frame. According to the external metal plate punching device, the hand clamping prevention mechanism is arranged, when the sliding block drives the punching tool to move downwards, the upper end of the first connecting rod drives the second connecting rod and the third connecting rod to swing from left to right, the arm of an operator is ripped open, the hands are prevented from being clamped by the punching device, and safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of external protection sheet metal punching devices, and particularly relates to an external protection sheet metal punching device. Background Technique

[0002] The external protection sheet metal of a machine tool generally refers to the protection device or decorative panel made by sheet metal technology in the external structure of the machine tool. These sheet metal parts can play functions such as protecting the precision parts inside the machine tool, preventing chip splashing, sound insulation and noise reduction, aesthetic decoration, and providing an operation platform.

[0003] During the use of the machine tool, since the high-speed chips and metal powders generated during the cutting process may cause harm to the operator or affect the performance and accuracy of the machine tool, it is necessary to install sheet metal parts for protection. These sheet metal parts are usually processed from metal sheets through processes such as cutting, bending, punching, and welding, and have a certain strength and rigidity, and can effectively absorb and block chips and powders.

[0004] For the cutting and punching processes, a punching device is required. Among various mechanical equipment injury accidents, the punching device causes the largest proportion of injuries. The serious injury accidents occurring in punching operations generally account for about 50% of the total serious injury accidents. Therefore, safety protection for the punching device must be taken seriously. Content of the Utility Model

[0005] (1) Technical Problems to be Solved

[0006] Aiming at the deficiencies of the prior art, the utility model provides an external protection sheet metal punching device, which solves the problems put forward in the above background technique.

[0007] (2) Technical Solutions

[0008] To achieve the above purposes, the utility model is realized through the following technical solutions: An external protection sheet metal punching device: including a workbench and a transmission mechanism. A support plate is vertically installed on one side of the workbench. A guide rail is arranged on the support plate. A slider is slidably arranged on the guide rail. The upper end of the slider is connected to the transmission mechanism. A punching tool is installed at the lower end of the slider. A punching base is installed on the corresponding workbench. It also includes a finger protection mechanism. The finger protection mechanism includes a first connecting rod, a second connecting rod, a third connecting rod, a rocker, and a connecting rod frame. The connecting rod frame is fixedly arranged on the guide rail. The lower end of the first connecting rod is hinged to one side of the lower end of the slider. The upper end of the first connecting rod is hinged to one end of the second connecting rod. The other end of the second connecting rod is connected to the upper end of the third connecting rod. The upper end of the third connecting rod is hinged to the center of the connecting rod frame. The rocker is connected to the third connecting rod.

[0009] Preferably, the transmission mechanism includes a flywheel, a rotating shaft, a cam, and a transmission rod. The flywheel is rotatably arranged on the back of the support plate, the cam is rotatably arranged on the front of the support plate, the rotating shaft passes through the support plate, the center of the flywheel is connected to the center of the large circle of the cam through the rotating shaft, the upper end of the transmission rod is rotatably connected to the center of the small circle of the cam, and the lower end of the transmission rod is hinged to the slider.

[0010] Preferably, a threaded hole is provided at the bottom end of the slider, and the punching cutter is fixedly connected to the slider through a bolt.

[0011] Preferably, a number of convex character grooves are linearly provided on the workbench, and the punching base is fixed to the workbench through bolts passing through the convex character grooves.

[0012] Preferably, a threaded hole is provided at the center of the rocker, the outer surface of the connecting rod three is provided with an external thread, and the rocker is threadedly connected to the connecting rod three.

[0013] Preferably, a rubber sleeve is sleeved outside the rocker.

[0014] (III) Beneficial effects

[0015] The present utility model provides an external anti-sheet metal punching device, which has the following beneficial effects:

[0016] 1. For this external anti-sheet metal punching device, a hand pinch prevention mechanism is provided, including a connecting rod one, a connecting rod two, a connecting rod three, a rocker, and a connecting rod frame. The connecting rod frame is fixedly arranged on the guide rail, the lower end of the connecting rod one is hinged to one side of the lower end of the slider, the upper end of the connecting rod one and one end of the connecting rod two are hinged, the other end of the connecting rod two is connected to the upper end of the connecting rod three, the upper end of the connecting rod three is hinged to the center of the connecting rod frame, and the rocker is connected to the connecting rod three. When the slider drives the punching cutter to move downward, the upper end of the connecting rod one drives the connecting rod two, driving the connecting rod three to swing from left to right, cutting open the operator's arm, preventing the punching device from pinching the hand, and improving safety.

[0017] 2. For this external anti-sheet metal punching device, the punching cutter is detachably connected to the lower end of the slider, and the punching base is detachably connected to the workbench. According to different processing techniques, the punching cutter and the punching base are changed to realize the sharing of multiple processes such as cutting or stamping, improving the utilization rate of the device.

[0018] 3. For this external anti-sheet metal punching device, the rocker is threadedly connected to the connecting rod three, so that the extending length of the rocker can be adjusted or the rocker can be replaced. At the same time, a rubber sleeve is sleeved outside the rocker to reduce the force of the rocker sliding on the arm. Description of the drawings

[0019] Figure 1 Structural schematic diagram of an external anti-sheet metal punching device of the present utility model Figure 1 ;

[0020] Figure 2Structural Schematic of an External Anti-Sheet Metal Punching Device of the Present Utility Model Figure 2 ;

[0021] Figure 3 Structural Schematic of an External Anti-Sheet Metal Punching Device of the Present Utility Model Figure 3 ;

[0022] Figure 4 Structural Schematic of an External Anti-Sheet Metal Punching Device of the Present Utility Model Figure 4 ;

[0023] Figure 5 Structural Schematic of the Anti-Pinch Mechanism of an External Anti-Sheet Metal Punching Device of the Present Utility Model.

[0024] In the figure: 1. Workbench; 2. Support plate; 3. Guide rail; 4. Slide block; 5. Punching tool; 6. Punching base; 7. Link one; 8. Link two; 9. Link three; 10. Rocker; 11. Link bracket; 12. Flywheel; 13. Rotating shaft; 14. Cam; 15. Transmission rod; 16. Bolt; 17. Convex character groove. Specific Embodiment

[0025] The processing of the external anti-sheet metal of the machine tool generally includes the following steps:

[0026] Design: According to the specific requirements and appearance requirements of the machine tool, design the drawing of the sheet metal part, including dimensions, shape, hole positions, connection methods, etc.

[0027] Material selection: According to the function of the sheet metal part and the use environment of the machine tool, select appropriate metal materials, such as stainless steel, carbon steel, aluminum, etc.

[0028] Cutting: Cut the metal sheet according to the design drawing into the required shape and size.

[0029] Bending: Use a bending machine to bend the metal sheet into the required curved shape, which usually requires using a mold to ensure the accuracy and consistency of the bending.

[0030] Punching: Punch the required holes on the sheet metal part according to the design requirements, such as ventilation holes, screw holes, etc.

[0031] Welding: Weld multiple sheet metal parts together to form a complete protective structure. Welding can adopt methods such as gas shielded welding, arc welding, etc.

[0032] Grinding and polishing: Grind and polish the welded sheet metal part to remove welding marks and burrs to ensure a smooth surface.

[0033] Surface treatment: According to the need, perform surface treatment on the sheet metal part, such as spraying, plating, etc., to improve corrosion resistance and aesthetics.

[0034] Assembly: Assemble the processed sheet metal parts to the outside of the machine tool, fix their positions, and ensure that they can play the expected protective and decorative roles.

[0035] Quality inspection: Conduct quality inspection on the completed sheet metal parts to ensure that their dimensions, shapes, and functions meet the design requirements.

[0036] During the entire processing process, a variety of mechanical equipment and tools are required, such as shearing machines, bending machines, punching machines, welding equipment, grinding machines, spraying equipment, etc. At the same time, relevant safety operation procedures and quality standards need to be followed to ensure the safety of the processing process and the quality of the sheet metal parts.

[0037] Most punching devices mainly use mechanical transmission. Their characteristic is a fast stroke speed. In the current situation where the degree of mechanization and automation is not high, most punching operations still use manual operations. In the case of simple, frequent, and continuous repetitive operations, operators are prone to fatigue. Once there are operation errors, inaccurate material feeding, or die displacement, there may be injury accidents such as punching off fingers.

[0038] Embodiment 1: The embodiment of the present utility model provides an external protection sheet metal punching device, as Figures 1-3 shown, including a workbench 1 and a transmission mechanism. A support plate 2 is vertically installed on one side of the workbench 1. A guide rail 3 is provided on the support plate 2. A slider 4 is slidably arranged on the guide rail 3. The upper end of the slider 4 is connected to the transmission mechanism, and a punching tool 5 is installed at the lower end of the slider 4. A punching base 6 is installed on the corresponding workbench 1. It also includes a finger protection mechanism, which includes a first connecting rod 7, a second connecting rod 8, a third connecting rod 9, a rocker 10, and a connecting rod frame 11. The connecting rod frame 11 is fixedly arranged on the guide rail 3. The lower end of the first connecting rod 7 is hinged to one side of the lower end of the slider 4. The upper end of the first connecting rod 7 is hinged to one end of the second connecting rod 8. The other end of the second connecting rod 8 is connected to the upper end of the third connecting rod 9. The upper end of the third connecting rod 9 is hinged to the center of the connecting rod frame 11. The rocker 10 is connected to the third connecting rod 9.

[0039] In the technical solution of this case, the transmission mechanism includes a flywheel 12, a rotating shaft 13, a cam 14, and a transmission rod 15. The flywheel 12 is rotatably arranged on the back of the support plate 2. The cam 14 is rotatably arranged on the front of the support plate 2. The rotating shaft 13 passes through the support plate 2. The center of the flywheel 12 is connected to the center of the large circle of the cam 14 through the rotating shaft 13. The upper end of the transmission rod 15 is rotatably connected to the center of the small circle of the cam 14. The lower end of the transmission rod 15 is hinged to the slider 4. The driving mechanism can be a motor (not shown in the figure), and the motor drives the flywheel 12 to rotate.

[0040] Embodiment 2, as Figures 4-5As shown, a threaded hole is provided at the bottom end of the slider 4, and the punching cutter 5 is fixedly connected to the slider 4 through a bolt 16. According to different processing technologies, the punching cutter 5 and the punching base 6 are changed to realize the sharing of multiple processes such as cutting or stamping, improving the utilization rate of the device.

[0041] Specifically, a number of convex character grooves 17 are linearly provided on the workbench 1, and the punching base 6 is fixed to the workbench 1 through a bolt 16 passing through the convex character grooves 17.

[0042] As Figure 5 shown, a threaded hole is provided at the center of the rocker 10, an external thread is provided on the outer surface of the connecting rod three 9, and the rocker 10 is threadedly connected to the connecting rod three. The rocker 10 and the connecting rod three 9 are threadedly connected, which is convenient for the replacement of the rocker 10 or the adjustment of the extended length of the rocker 10.

[0043] Furthermore, a rubber sleeve is sleeved on the rocker 10, which can reduce the force of the rocker 10 hitting the arm when it slides.

[0044] Working principle: When the external anti-metal sheet punching device is in use, as Figure 2 shown, at this time, the punching stroke belongs to the highest point, the center of the small circle of the cam 14 is at the highest point, the slider is at the highest position of the guide rail 3, the punching cutter 5 is at the highest position, and the rocker 10 is at the leftmost position. At this time, the operator places the external anti-metal sheet under the punching cutter 5, and the stroke continues until as Figure 3 shown, the cam 14 rotates counterclockwise until as Figure 3 shown, that is, the center of the small circle of the cam 14 is at the lowest point, the slider 4 slides downward in the guide rail 3, driving the punching cutter 5 to move downward, the slider drives the connecting rod one 7 to move downward, the connecting rod one drives the connecting rod two 8 to rotate, and the connecting rod two 8 drives the connecting rod three 9 to rotate, causing the rocker 10 to swing from the leftmost to the rightmost, thereby cutting open the operator's arm to prevent pinching.

[0045] To sum up,

[0046] The external anti-metal sheet punching device is provided with an anti-pinching mechanism, including a connecting rod one 7, a connecting rod two 8, a connecting rod three 9, a rocker 10, and a connecting rod frame 11. The connecting rod frame 11 is fixedly arranged on the guide rail 3. The lower end of the connecting rod one 7 is hinged to one side of the lower end of the slider 4. The upper end of the connecting rod one 7 is hinged to one end of the connecting rod two 8. The other end of the connecting rod two 8 is connected to the upper end of the connecting rod three 9. The upper end of the connecting rod three 9 is hinged to the center of the connecting rod frame 11. The rocker 10 is connected to the connecting rod three 9. When the slider 4 drives the punching cutter 5 to move downward, the upper end of the connecting rod one 7 drives the connecting rod two 8, driving the connecting rod three 9 to swing from left to right, cutting open the operator's arm, preventing the punching device from pinching hands, and improving safety.

[0047] For the external anti - sheet metal punching device, the lower end of the slider 4 is detachably connected to the punching cutter 5, and the punching base 6 is detachably connected to the workbench 1. According to different processing techniques, the punching cutter 5 and the punching base 6 are changed to realize the sharing of multiple processes such as cutting or stamping, thereby improving the utilization rate of the device.

[0048] For the external anti - sheet metal punching device, the rocker 10 is threadedly connected to the connecting rod three 9, so that the extended length of the rocker 10 can be adjusted or the rocker 10 can be replaced. At the same time, a rubber sleeve is sleeved outside the rocker 10 to reduce the force of the rocker 10 sliding on the arm.

[0049] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An external sheet metal punching device, characterized in that: The invention comprises a workbench (1) and a transmission mechanism, wherein a support plate (2) is vertically mounted on one side of the workbench (1), a guide rail (3) is arranged on the support plate (2), a slider (4) is slidably mounted on the guide rail (3), the upper end of the slider (4) is connected to the transmission mechanism, a punching tool (5) is mounted on the lower end of the slider (4), a punching base (6) is mounted on the corresponding workbench (1), and an anti-pinch mechanism is also included, wherein the anti-pinch mechanism comprises a connecting rod 1 (7), a connecting rod 2 (8), connecting rod three (9), rocking arm (10), connecting rod frame (11), the connecting rod frame (11) is fixedly arranged on the guide rail (3), the lower end of the connecting rod one (7) is hinged to one side of the lower end of the slider (4), the upper end of the connecting rod one (7) is hinged to one end of the connecting rod two (8), the other end of the connecting rod two (8) is connected to the upper end of the connecting rod three (9), the upper end of the connecting rod three (9) is hinged to the center of the connecting rod frame (11), and the rocking arm (10) is connected to the connecting rod three (9).

2. The external sheet metal punching device according to claim 1, characterized in that: The transmission mechanism comprises a flywheel (12), a rotating shaft (13), a cam (14), and a transmission rod (15); the flywheel (12) is rotatably arranged on the back side of a support plate (2); the cam (14) is rotatably arranged on the front side of the support plate (2); the rotating shaft (13) is passed through the support plate (2); the center of the flywheel (12) and the center of a large circle of the cam (14) are connected via the rotating shaft (13); the upper end of the transmission rod (15) is rotatably connected to the center of a small circle of the cam (14); and the lower end of the transmission rod (15) is hinged on a slider (4).

3. The external sheet metal punching device according to claim 1, characterized in that: A threaded hole is provided at the bottom end of the slider (4), and the punching tool (5) is connected and fixed to the slider (4) via bolts (16).

4. The external sheet metal punching device according to claim 1, characterized in that: The workbench (1) is linearly provided with a plurality of convex grooves (17), and the punching base (6) is fixed on the workbench (1) by means of bolts passing through the convex grooves (17).

5. The external sheet metal punching device according to claim 1, characterized in that: A threaded hole is provided at the center of the rocker (10), an external thread is provided on the outer surface of the connecting rod three (9), and the rocker (10) is threadedly connected to the connecting rod three (9).

6. The external sheet metal punching device according to claim 5, characterized in that: The rocker (10) is provided with a rubber sleeve.

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