Automatic punching machine

Abstract

An automatic punching machine comprises a transferring mechanism installed on a first workbench and a punching mechanism installed on a second workbench, and the transferring mechanism comprises a mechanical arm fixedly installed on the first workbench and a mechanical hand rotationally installed at the free end of the mechanical arm and used for taking and placing products. The punching mechanism comprises a first positioning unit, a second positioning unit and a punching unit, the first positioning unit and the second positioning unit are installed on the second workbench, the punching unit is located above the second positioning unit, the first positioning unit comprises a plurality of horizontally-arranged first air cylinders, and a first positioning block is installed at the movable end of each first air cylinder; the first positioning unit comprises a plurality of first positioning blocks used for defining a first space for containing a product, the second positioning unit comprises a plurality of second positioning blocks used for defining a second space for containing the product, and the second workbench penetrates through the second space and is provided with a punching groove. The punching unit comprises a vertically-arranged second air cylinder and a punching cutter which is installed at the movable end of the second air cylinder and used for punching the product. The punching cutter can downwards stretch into the punching groove.

Description

Technical Field

[0001] The utility model relates to the field of processing equipment, in particular to an automatic punching machine. Background Art

[0002] With the increasing use of injection-molded products, the processing technology of injection-molded products is also getting higher and higher. For example, the punching holes of injection-molded products and the requirement for smooth water inlet positions usually need to be completed by punching equipment to meet the process requirements and customer requirements.

[0003] Existing punching equipment generally includes a punching base, a cylinder installed above the punching base, and a punching knife installed at the movable end of the cylinder. During use, the product is manually placed on the punching base, and the punching knife located above the punching base moves downward to complete the opening of the product or cutting of the water inlet material, etc. However, when people place the product on the base, problems such as misalignment may occur, resulting in deviation of the punching position and scrapping of the product. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an automatic punching machine with precise positioning and capable of ensuring a reduction in the defective rate of product punching.

[0005] To achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An automatic punching machine includes a transfer mechanism installed on a first workbench and a punching mechanism installed on a second workbench. The transfer mechanism includes a robotic arm fixedly installed on the first workbench and a manipulator rotatably installed at the free end of the robotic arm for picking and placing products. The punching mechanism includes a first positioning unit and a second positioning unit arranged side by side on the second workbench, and a punching unit located above the second positioning unit. The first positioning unit includes a plurality of first cylinders horizontally arranged for adjusting the direction of the product. A first positioning block is installed at the movable end of each first cylinder, and the plurality of first positioning blocks enclose a first space for accommodating the product. The second positioning unit includes a plurality of second positioning blocks for enclosing a second space for accommodating the product. A punching slot is opened through the second space on the second workbench. The punching unit includes a second cylinder vertically arranged and a punching knife installed at the movable end of the second cylinder for punching the product. The punching knife can extend downward into the punching slot. The manipulator can grab the product from the loading table and place it in the first space, transfer the product in the first space to the second space, and transport the product in the second space back to the loading table.

[0007] Further, the manipulator includes a fixing bracket installed at the free end of the robotic arm, a third cylinder fixedly installed on the fixing bracket, and a gripper installed at the movable end of the third cylinder. The gripper is used to grab the product from the loading table and place the product in the first space of the first positioning unit.

[0008] Further, the manipulator further includes two fourth cylinders located on both sides of the third cylinder. A suction cup is installed at the movable end of each fourth cylinder. When the manipulator works above the second workbench, the suction cups of the two fourth cylinders are used to respectively grab the products in the first space and the second space.

[0009] Further, a spring for buffering is installed between the suction cup and the movable end of the fourth cylinder.

[0010] Further, the punching unit further includes a support frame installed on the second workbench. The support frame includes support columns vertically and parallelly arranged on the second workbench and a support plate connected to the top ends of the support columns. The second cylinder is fixed on the support plate, and the punching knife installed at the movable end of the second cylinder is located below the support plate.

[0011] Further, the punching unit further includes a sliding plate slidably arranged along the support column. The sliding plate is located between the second workbench and the support plate and is fixedly connected to the movable end of the second cylinder. The punching knife is installed on the sliding plate.

[0012] Further, a mounting plate is installed below the sliding plate. The mounting plate is provided with a mounting hole, and the mounting rod of the punching knife is fixed in the mounting hole. The cutting head of the punching knife protrudes from the lower surface of the mounting plate.

[0013] Further, the automatic punching machine further includes a support leg frame located below the second workbench and a waste bin slidably arranged inside the support leg frame. The opening of the waste bin corresponds to the punching slot.

[0014] Further, an infrared induction component is also arranged on the second workbench. When the infrared induction component senses the manipulator or the robotic arm, the punching unit stops working.

[0015] Further, the automatic punching machine further includes a control unit for controlling the operation of the punching unit and a display unit for displaying the working state of the punching unit. A control button electrically connected to the control unit and a warning lamp electrically connected to the control unit are also installed on the second workbench.

[0016] The automatic punching machine of the present utility model adjusts the direction of the product grasped by the manipulator through the first positioning unit, and then moves the product with the adjusted direction into the second positioning unit to achieve precise positioning. Then, the punching knife aligns with the product positioned in the second positioning unit for punching operation. The automatic punching machine of the present utility model can effectively ensure the precision of the punching position by positioning the product twice, so as to ensure the reduction of the defective rate of product punching. Description of the Drawings

[0017] Figure 1 It is a perspective view of the automatic punching machine of the present utility model.

[0018] Figure 2 is Figure 1 a perspective view of the punching mechanism of the automatic punching machine shown.

[0019] Figure 3 is Figure 2 a perspective view of the punching unit of the punching mechanism shown.

[0020] Figure 4 is Figure 3 a perspective view of the second workbench, the first positioning unit and the second positioning unit of the punching unit shown.

[0021] Figure 5 is Figure 4 a perspective view of the second workbench, the first positioning unit and the second positioning unit from another angle shown.

[0022] Figure 6 is a perspective view of the punching unit of the present utility model.

[0023] Figure 7 is a perspective view of the punching knife of the present utility model.

[0024] Figure 8 is an assembly schematic diagram of the second workbench, the footrest and the waste bin of the present utility model.

[0025] Figure 9 is a perspective view of the transfer mechanism of the present utility model.

[0026] Figure 10 is Figure 9 a perspective view of the manipulator of the transfer mechanism shown.

[0027] Figure 11 is Figure 6 a partial enlarged view of the A position of the punching unit shown. Detailed Embodiment

[0028] The following will further describe in detail the specific implementation manners of the present utility model in conjunction with the accompanying drawings and embodiments. The following embodiments are used to illustrate the present utility model, but are not used to limit the scope of the present utility model.

[0029] The terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "vertical", "horizontal", etc. in the specification and claims of the present utility model indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. It is only for the sake of clear expression of the technical solution and convenient description, and therefore cannot be construed as a limitation to the present application.

[0030] Please refer to Figures 1 - 11 , the present utility model discloses an automatic punching machine, which includes a transfer mechanism 200 installed on a first workbench 210 and a punching mechanism 10 installed on a second workbench 11. In this embodiment, the first workbench 210 and the second workbench 11 are arranged side by side.

[0031] Please refer to Figure 1 and Figure 9 , the transfer mechanism 200 includes a robotic arm 230 fixedly installed on the first workbench 210 and a manipulator 220 rotatably installed at the free end of the robotic arm 230 for picking and placing products.

[0032] Please refer to Figures 3 - 7 , the punching machine 10 includes a first positioning unit 13 and a second positioning unit 12 arranged side by side and installed on the second workbench 11, and a punching unit 15 located above the second positioning unit 12. The first positioning unit 13 includes a plurality of first cylinders 133 horizontally arranged for adjusting the direction of the product. A first positioning block 132 is installed at the movable end of each first cylinder 133. In this embodiment, the first positioning unit 13 includes a total of four first cylinders 133 acting synchronously in the front, rear, left, and right directions, and the first positioning blocks 132 of the plurality of first cylinders 133 enclose a first space 131 for accommodating the product. When the movable ends of the plurality of first cylinders 133 extend synchronously, the first positioning blocks 132 at the movable ends of the first cylinders 133 respectively abut against the four sides of the product. The second positioning unit 12 includes a plurality of second positioning blocks 121 for enclosing a second space 123 for accommodating the product. The second workbench 11 is provided with at least one punching groove 122 penetrating through the second space 123. The punching unit 15 includes a second cylinder 17 vertically arranged and a punching knife 156 installed at the movable end of the second cylinder 17 for punching the product. The punching knife 156 can extend downward into the punching groove 122.

[0033] Further, the manipulator 220 can grasp the product from the loading platform 300 and place it in the first space 131, transfer the product in the first space 131 to the second space 123, and transport the product in the second space 123 back to the loading platform 300.

[0034] In this embodiment, the loading platform 300 can be an assembly line, a loading rack, or a loading rack on an assembly line, and is not particularly limited herein as long as it can achieve loading.

[0035] Please refer to Figure 9 and Figure 10 , the manipulator 220 includes a fixing bracket 221 installed at the free end of the robotic arm 230, and a third cylinder 222 fixedly installed on the fixing bracket 221. A gripper 223 is installed at the movable end of the third cylinder 222. In this embodiment, the gripper 223 is used to grasp the product from the loading platform 300 and place the product in the first space 131 of the first positioning unit 13 through the robotic arm 230. Then, the first cylinder 133 of the first positioning unit 13 synchronously actuates and adjusts the product in the first space 131 to fit the second space 123 of the second positioning unit 12.

[0036] Please continue to refer to Figure 10 , the manipulator 220 further includes two fourth cylinders 224 fixedly installed on the fixing bracket 221. The two fourth cylinders 224 are located on both sides of the third cylinder 222. A suction cup 225 is installed at the movable end of each fourth cylinder 224. When the manipulator 220 works above the second workbench 11, the suction cups 225 of the two fourth cylinders 224 are used to respectively grasp the products in the first space 131 and the second space 123. In this embodiment, a plurality of suction cups 225 are installed at the movable end of each fourth cylinder 224, and the plurality of suction cups 225 at the movable end of each fourth cylinder 224 are located in the same plane to jointly grasp the product in the first space 131 or the second space 123.

[0037] In this embodiment, both the gripper 223 and the suction cup 225 are connected to an external air compressor through air pipes, and the air compressor provides working air pressure for the gripper 223 and the suction cup 225.

[0038] Please continue to refer to Figure 10, more specifically, a spring 226 for buffering is installed between the suction cup 225 and the movable end of the fourth cylinder 224. The spring 226 is provided to effectively prevent the movable end of the fourth cylinder 224 from driving the suction cup 225 to crush the product during the downward pressing process of grasping the product.

[0039] Please continue to refer to Figure 3 , the punching mechanism 10 further includes a support frame 14 installed on the second workbench 11. The support frame 14 includes support columns 141 vertically and parallelly arranged on the second workbench 11 and a support plate 142 connected to the top ends of the support columns 141. The second cylinder 17 is fixed on the support plate 142, and the punching knife 156 installed at the movable end of the second cylinder 17 is located below the support plate 142.

[0040] Please refer to Figure 3 and Figure 6 , the punching mechanism 10 further includes a sliding plate 151 slidably arranged along the support column 141. The sliding plate 11 is located between the second workbench 11 and the support plate 142 and is fixedly connected to the movable end of the second cylinder 17. The punching knife 156 is installed on the sliding plate 151. The sliding plate 151 is also provided with a sliding hole 1511 for accommodating the support column 141, and the support column 141 is located in the sliding hole 1511.

[0041] Please refer to Figure 4 , Figure 6 , Figure 7 and Figure 11 , an installation seat 152 is installed above the sliding plate 151, and the installation seat 152 is fixedly connected to the movable end of the second cylinder 17. An installation plate 153 is installed below the sliding plate 151. The installation plate 153 is provided with an installation hole 155. The installation rod 1561 of the punching knife 156 is fixed in the installation hole 155, and the knife head 1562 of the punching knife 156 protrudes from the lower surface of the installation plate 153. A positioning column 154 is arranged on the lower surface of the installation plate 153. The second positioning unit 12 is provided with a positioning hole 124 corresponding to the positioning column 154. When the installation plate 153 of the punching mechanism 10 drives the punching knife 156 to move downward, the positioning column 154 is correspondingly inserted into the positioning hole 124, and the punching knife 156 correspondingly extends into the punching groove 122.

[0042] Please refer to Figure 1 and Figure 2, the punching mechanism 10 further includes a shielding plate 18 which is arranged in a "C" shape. The shielding plate 18 is provided to prevent the limbs of personnel or other materials from entering below the punching unit 15 during the operation of the punching mechanism 10 and being injured by the punching knife 156. Further, an infrared sensing component 40 is also provided on the second workbench 11 on the side where the shielding plate 18 has an opening. When the transfer mechanism 200 operates, the manipulator 220 enters the punching mechanism 10 from the side where the shielding plate 18 has an opening for grasping and transfer operations. And when the infrared sensing component 40 senses the manipulator 220 or the robotic arm 230, the punching unit 15 stops working to avoid a collision event.

[0043] Please refer to Figure 2 and Figure 8 , the automatic punching machine further includes a support leg frame 20 located below the second workbench 11 and a waste bin 21 slidably arranged inside the support leg frame 20. The opening of the waste bin 21 corresponds to the punching slot 122. To facilitate the pulling out of the waste bin 21, a handle 211 is installed on the waste bin 21. When the punching mechanism 10 stops working, the waste bin 21 is pulled out through the handle 211 to timely clean the punching waste.

[0044] Please refer to Figure 1 and Figure 8 , the periphery of the support leg frame 20 is covered with a shielding plate 22 to prevent the punching waste from splashing outside the support leg frame 20 and the shielding plate 22.

[0045] Please refer to Figure 2 and Figure 3 , the automatic punching machine further includes a control unit 30 for controlling the operation of the punching unit 15 and a display unit 31 for displaying the working state of the punching unit 15. And a control button 16 electrically connected to the control unit 30 and a warning light 32 electrically connected to the control unit 30 are also installed on the second workbench 11. In this embodiment, the control unit 30 controls the operation of the first cylinder 133, the second cylinder 17, the third cylinder 222 and the fourth cylinder 224, and controls the operation of the robotic arm 230, the air claw 223 and the suction cup 225. Further, the air claw 223, the suction cup 225, the first cylinder 133, the second cylinder 17, the third cylinder 222 and the fourth cylinder 224 are connected to an external pneumatic device and the external pneumatic device provides a working air source for the air claw 223, the suction cup 225, the first cylinder 133, the second cylinder 17, the third cylinder 222 and the fourth cylinder 224.

[0046] When the automatic punching machine of the utility model is working,

[0047] Step 1: The control unit 30 controls the robotic arm 230 to drive the manipulator 220 to swing to the loading table 300. The air claw 223 of the manipulator 220 grabs the product and transfers it to the first space 131 of the first positioning unit 13 under the drive of the robotic arm 230. At this time, the moving end of the first cylinder 133 of the first positioning unit 13 is in the state of not extending.

[0048] Step 2: The first cylinder 133 of the first positioning unit 13 actuates, and the moving end of the first cylinder 133 drives the first positioning block 132 to extend and abut against the periphery of the product to position the product. Then, the suction cup 225 located above the first space 131 moves downward and grabs the positioned product, rotates 180 degrees under the drive of the robotic arm 230, and places the product into the second space 123.

[0049] Step 3: The manipulator 220 drives the air claw 223 to grab the product from the loading table 300 under the drive of the robotic arm 230. At the same time, the punching unit 15 punches the product in the second space 121, and the punching waste falls into the waste box 21 through the punching slot 122.

[0050] Step 4: The manipulator 220 drives the air claw 223 to place the grabbed product in the first space 131. The first positioning unit 13 positions the product in the first space 131. Then, the manipulator 220 drives the suction cups 225 located on both sides of the air claw 223 to move downward simultaneously and grab the products in the first space 131 and the second space 123. Then, the product in the first space 131 is transferred to the second space 123, and the product in the second space 123 is transferred to the loading table 300.

[0051] Through the above actions, the automatic punching function of the product is realized.

[0052] For the automatic punching machine of the utility model, the direction of the product grabbed by the manipulator 220 is adjusted by the first positioning unit 13, and then the product with the adjusted direction is moved into the second positioning unit 12 to achieve precise positioning. Then, the punching knife 156 aligns with the product positioned in the second positioning unit 12 for punching operation. The automatic punching machine of the utility model can effectively ensure the accuracy of the punching position by repositioning the product twice, so as to ensure the reduction of the defective rate of product punching.

[0053] The above are only the specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model can easily think of changes or substitutions, which should all be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the said claims.

Claims

1. An automatic punching machine, comprising a transfer mechanism installed on a first workbench and a punching mechanism installed on a second workbench, characterized in that, The transfer mechanism includes a robotic arm fixedly installed on the first workbench, and a manipulator rotatably installed at the free end of the robotic arm for picking and placing products. The punching mechanism includes a first positioning unit and a second positioning unit arranged side by side on the second workbench, and a punching unit located above the second positioning unit. The first positioning unit includes a plurality of first cylinders horizontally arranged for adjusting the direction of the product. A first positioning block is installed at the movable end of each first cylinder. The plurality of first positioning blocks enclose a first space for accommodating the product. The second positioning unit includes a plurality of second positioning blocks for enclosing a second space for accommodating the product. A punching slot is formed through the second space on the second workbench. The punching unit includes a vertically arranged second cylinder and a punching knife installed at the movable end of the second cylinder for punching the product. The punching knife can extend downward into the punching slot. The manipulator can grab the product from the loading table and place it in the first space, transfer the product in the first space to the second space, and transport the product in the second space back to the loading table.

2. The automatic punching machine according to claim 1, characterized in that, The manipulator includes a fixed frame installed at the free end of the robotic arm, and a third cylinder fixedly installed on the fixed frame. A gripper is installed at the movable end of the third cylinder. The gripper is used to grab the product from the loading table and place the product in the first space of the first positioning unit.

3. The automatic punching machine according to claim 2, characterized in that, The manipulator further includes two fourth cylinders located on both sides of the third cylinder. A suction cup is installed at the movable end of each fourth cylinder. When the manipulator works above the second workbench, the suction cups of the two fourth cylinders are used to respectively grab the products in the first space and the second space.

4. The automatic punching machine according to claim 3, wherein, A spring for buffering is installed between the suction cup and the movable end of the fourth cylinder.

5. The automatic punching machine according to claim 1, wherein The punching unit further includes a support frame installed on the second workbench. The support frame includes support columns vertically and parallelly arranged on the second workbench and a support plate connected to the top ends of the support columns. The second cylinder is fixed on the support plate. The punching knife installed at the movable end of the second cylinder is located below the support plate.

6. The automatic punching machine according to claim 5, characterized in that, The punching unit further includes a sliding plate slidably arranged along the support column. The sliding plate is located between the second workbench and the support plate and is fixedly connected to the movable end of the second cylinder. The punching knife is installed on the sliding plate.

7. The automatic punching machine according to claim 6, characterized in that, An installation plate is installed below the sliding plate. The installation plate is provided with an installation hole. The installation rod of the punching knife is fixed in the installation hole. The cutting head of the punching knife protrudes from the lower surface of the installation plate.

8. The automatic punching machine according to claim 1, wherein, The automatic punching machine further includes a support leg frame located below the second workbench and a waste box slidably arranged inside the support leg frame. The opening of the waste box corresponds to the punching slot.

9. The automatic punching machine according to claim 1, wherein An infrared sensing component is further provided on the second workbench. When the infrared sensing component senses the manipulator or the robotic arm, the punching unit stops working.

10. The automatic punching machine according to claim 1, characterized in that, The automatic punching machine further includes a control unit for controlling the operation of the punching unit and a display unit for displaying the working state of the punching unit. A control button electrically connected to the control unit and a warning lamp electrically connected to the control unit are further installed on the second workbench.

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