Automatic punching machine for leather processing
By designing an automatic punching machine, the use of light intensity sensors and transistor switch circuits to achieve automatic clamping of leather and automatic cylinder operation, the problems of low working efficiency and high mechanical configuration requirements in the existing technology are solved, and efficient leather automatic processing is achieved.
Patent Information
- Application Number
- CN202422086017.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-27
- Publication Date
- 2025-06-20
- Estimated Expiration
- 2034-08-27
AI Technical Summary
The working efficiency of existing leather punching machines is low and require manual control of the feeding of leather, which leads to high mechanical configuration requirements and is difficult to achieve automatic processing of leather.
An automatic punching machine is designed, using a light intensity sensor to detect the leather position, trigger the transistor switch circuit, realize the electromagnet adsorbs a metal spring, automatically clamps the leather, and controls the automatic operation of the cylinder through a delay circuit.
It realizes automatic leather punching without manual operation, improves work efficiency, reduces mechanical configuration requirements, and improves the automatic processing capability of leather.
Smart Images
Figure CN223002949U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of leather processing, in particular to an automatic punching machine for leather processing. Background Technique
[0002] A leather punching machine is an efficient industrial device specifically designed to make precise holes in flexible materials such as leather and fabric. By using replaceable dies, this machine can easily achieve hole designs of different shapes and sizes, thus meeting diverse process requirements. It not only improves production efficiency but also ensures the accuracy and aesthetics of punching. Leather punching machines are widely used in fields such as shoe-making, luggage, and clothing manufacturing, and are one of the indispensable tools in modern manufacturing. Their operation is simple and easy to maintain, making the production process smoother and more efficient.
[0003] Currently, for existing leather punching machines, after manually placing the leather on the tabletop, the punching of the leather is completed by pressing a button. However, this method has relatively low working efficiency. Therefore, the air cylinder of the leather punching machine will perform timed reciprocating punching actions under the control of the controller, and the time interval of each punching action is the same. But in this way, it is required that the operator accurately control the time to feed the leather into it. Therefore, when actually punching the leather, other automated machinery is used to transport the leather, which requires a relatively high mechanical configuration for the automated processing of leather. Otherwise, it is difficult to control the feeding of the leather.
[0004] Therefore, an automatic punching machine for leather processing is proposed to solve or alleviate the above problems. Content of the Utility Model
[0005] The purpose of the utility model is to solve the deficiencies existing in the prior art and propose an automatic punching machine for leather processing.
[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:
[0007] An automatic punching machine for leather processing includes a workbench, a mounting frame fixedly connected to the top surface of the workbench, a cylinder vertically fixedly connected to the mounting frame, a mounting seat fixedly connected to the movable end of the cylinder through a connecting piece, and a punching knife and a plurality of punching heads fixedly connected to the bottom surface of the mounting seat. A sliding column is fixedly connected to the top surface of the workbench below the mounting frame. A pressing frame is slidably connected to the sliding column. A metal elastic member is sleeved outside the sliding column below the pressing frame. Two ends of the metal elastic member are respectively fixedly connected to the pressing frame and the top surface of the workbench. A through groove for the punching knife and the punching heads to penetrate is formed on the pressing frame. An electromagnet corresponding to the metal elastic member is fixedly connected to the bottom surface of the workbench. The electromagnet is powered on and off according to whether there is leather above the workbench.
[0008] Preferably, a plurality of holes and grooves for the punch and the punching knife to penetrate are formed in the top surface of the workbench.
[0009] Preferably, it further includes a leather detection circuit, which is coupled to the electromagnet, and the leather detection circuit is configured to be powered on and off according to whether there is leather above the workbench.
[0010] Preferably, the leather detection circuit includes a plurality of groups of light intensity sensors and voltage comparison circuits, a plurality of groups of AND gates, and a switch circuit. The probes of the light intensity sensors penetrate the top surface of the workbench from bottom to top. The number of light intensity sensors is the same as that of the voltage comparison circuits. The light intensity sensors collect the ambient light intensity above the workbench and feedback the light intensity signal. The input end of the voltage comparison circuit is coupled to the output end of the light intensity sensor. The voltage comparison circuit feeds back a comparison signal after the light intensity signal is less than a preset light intensity reference signal. The number of AND gates is one less than that of the voltage comparison circuits. A plurality of the AND gates form a multi-stage gate circuit coupled to a plurality of voltage comparison circuits. The output end of the multi-stage gate circuit controls the on and off between the electromagnet and the power supply through the switch circuit.
[0011] Preferably, a push-button switch is connected in series between the electromagnet and the power supply.
[0012] Preferably, the voltage comparison circuit includes a voltage comparator, and the switch circuit includes a triode switch. The base of the triode switch is coupled to the output end of the multi-stage gate circuit. The collector of the triode switch is connected to the electromagnet and the push-button switch and then connected to the power supply. The emitter of the triode switch is grounded.
[0013] Preferably, the leather detection circuit further includes a delay circuit and a controller. The controller is an STM32 single-chip microcomputer. The input end of the delay circuit is coupled to the output end of the switch circuit. The output end of the delay circuit is coupled to the input end of the controller. The output end of the controller is coupled to the air cylinder. After the switch circuit is turned on, the delay circuit is triggered synchronously and starts timing, and sends a delay signal to the controller after the timing ends. The controller controls the air cylinder to work once in response to the delay signal.
[0014] The utility model has the following beneficial effects:
[0015] The utility model detects the position of the leather through the light intensity sensor, triggers the triode switch circuit, realizes the adsorption of the metal spring by the electromagnet, automatically clamps the leather, and controls the automatic operation of the air cylinder through the delay circuit, without manual operation. Description of the Drawings
[0016] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the accompanying drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following accompanying drawings only show certain embodiments of the present utility model, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related accompanying drawings can also be obtained based on these drawings.
[0017] Figure 1 Structural schematic diagram of the present utility model;
[0018] Figure 2 is Figure 1 Enlarged view of part A in
[0019] Figure 3 Structural block diagram of the leather detection circuit in the present utility model;
[0020] Figure 4 Wiring diagram of the voltage comparison circuit and AND gate circuit in the present utility model;
[0021] Figure 5 Wiring diagram of the AND gate circuit, switch circuit, electromagnet and push-button switch in the present utility model;
[0022] Figure 6 Wiring diagram of the delay circuit in the present utility model.
[0023] 1. Workbench; 2. Mounting frame; 3. Cylinder; 4. Connecting piece; 5. Mounting seat; 6. Punch; 7. Punching knife; 8. Hole groove; 9. Pressing frame; 10. Light intensity sensor; 11. Voltage comparison circuit; 12. AND gate circuit; 13. Switch circuit; 14. Electromagnet; 15. Push-button switch; 16. Delay circuit; 17. Controller. Specific embodiments
[0024] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of the embodiments. Usually, the components of the embodiments of the present utility model described and shown in the accompanying drawings here can be arranged and designed in various different configurations.
[0025] Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the present utility model to be protected, but merely represents the selected embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.
[0026] It should be noted that like reference numerals and letters denote like items in the following figures. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0027] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the figures, or the orientation or positional relationship in which the product of the present utility model is usually placed during use, or the orientation or positional relationship commonly understood by those skilled in the art. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.
[0028] In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.
[0029] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "installed", "connected", "connected to" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0030] An automatic punching machine for leather processing, as Figure 1 and Figure 2 shown, includes a workbench 1, a mounting frame 2 fixedly connected to the top surface of the workbench 1, a cylinder 3 fixedly connected vertically to the mounting frame 2, a mounting seat 5 fixedly connected to the movable end of the cylinder 3 through a connecting member 4, and a punching knife 7 and a plurality of punching heads 6 fixedly connected to the bottom surface of the mounting seat 5. A plurality of hole grooves 8 for the punching heads 6 and the punching knife 7 to penetrate are provided on the top surface of the workbench 1. A sliding column is fixedly connected to the top surface of the workbench 1 and is located below the mounting frame 2. A pressing frame 9 is slidably connected to the sliding column. A metal elastic member is sleeved outside the sliding column and is located below the pressing frame 9. The two ends of the metal elastic member are respectively fixedly connected to the pressing frame 9 and the top surface of the workbench 1. A through groove for the punching knife 7 and the punching heads 6 to penetrate is provided on the pressing frame 9. An electromagnet 14 corresponding to the metal elastic member is fixedly connected to the bottom surface of the workbench 1, and the electromagnet 14 is energized and de-energized according to whether there is leather above the workbench 1.
[0031] Specifically, as Figure 3As shown, it further includes a leather detection circuit. The leather detection circuit is coupled to the electromagnet 14 and is set to be powered on and off according to whether there is leather above the workbench 1.
[0032] As Figure 3 , Figure 4 , Figure 5 and Figure 6 shown, the leather detection circuit includes several groups of light intensity sensors 10, voltage comparison circuits 11, several groups of AND gate circuits 12, a switch circuit 13, a delay circuit 16, and a controller 17. The probes of the light intensity sensors 10 penetrate the top surface of the workbench 1 from bottom to top. The number of light intensity sensors 10 is the same as the number of voltage comparison circuits 11. The light intensity sensors 10 collect the ambient light intensity above the workbench 1 and feedback the light intensity signal. The input end of the voltage comparison circuit 11 is coupled to the output end of the light intensity sensor 10. The voltage comparison circuit 11 feeds back a comparison signal after the light intensity signal is less than the preset light intensity reference signal therein. The number of AND gate circuits 12 is one less than the number of voltage comparison circuits 11. Several AND gate circuits 12 form a multi-stage gate circuit coupled to several voltage comparison circuits 11. The output end of the multi-stage gate circuit controls the on and off between the electromagnet 14 and the power supply through the switch circuit 13. A push-button switch 15 is connected in series between the electromagnet 14 and the power supply. The voltage comparison circuit 11 includes a voltage comparator. The switch circuit 13 includes a triode switch. The base of the triode switch is coupled to the output end of the multi-stage gate circuit. The collector of the triode switch is connected to the electromagnet 14 and the push-button switch 15 and then connected to the power supply. The emitter of the triode switch is grounded. The controller 17 is an STM32 single-chip microcomputer. The input end of the delay circuit 16 is coupled to the output end of the switch circuit 13. The output end of the delay circuit 16 is coupled to the input end of the controller 17. The output end of the controller 17 is coupled to the cylinder 3. After the switch circuit 13 is turned on, the delay circuit 16 is triggered synchronously and starts timing, and sends a delay signal to the controller 17 after the timing ends. The controller 17 controls the cylinder 3 to work once in response to the delay signal.
[0033] When the utility model is actually working, a worker places the leather on the top surface of the workbench 1. At this time, the leather blocks the probe of the light intensity sensor 10, so that the light intensity signal fed back by the light intensity sensor 10 is smaller than the light intensity reference signal in the voltage comparison circuit 11. When multiple light intensity sensors 10 and voltage comparison circuits 11 detect, the multi-stage gate circuit can feed a high-level judgment signal to the base of the switch circuit 13 of the triode switch. At this time, the emitter and collector of the switch circuit 13 of the triode switch are conducted. As long as the push-button switch 15 remains closed, the electromagnet 14 can also be energized. After the electromagnet 14 is energized, it adsorbs the metal elastic member, that is, the metal spring, so that the metal spring can pull the pressing frame 9 downward, so that the pressing frame 9 can press on the leather, so that the leather is pre-clamped by the pressing frame 9 and the workbench 1. After the collector and emitter of the switch circuit 13 of the triode switch are conducted, the capacitor in the delay circuit 16 can also be charged. This charging process is the timing process. After the charging is completed, that is, the timing ends. At this time, the delay circuit 16 sends a delay signal to the controller 17. At this time, the controller 17 controls the cylinder 3 to work once. In this way, there is no need for a worker to control the work of the cylinder 3. As long as the leather is placed on the workbench 1, the detection can be automatically carried out.
[0034] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.
Claims
1. An automatic punching machine for leather processing, characterized in that: The invention comprises a workbench (1), a mounting frame (2) fixedly connected to the top surface of the workbench (1), a cylinder (3) vertically fixedly connected to the mounting frame (2), a mounting seat (5) fixedly connected to the movable end of the cylinder (3) through a connecting member (4), and a punch (7) fixedly connected to the bottom surface of the mounting seat (5) and a plurality of punches (6). The top surface of the workbench (1) is fixedly connected to a sliding column located below the mounting frame (2), a pressing frame (9) is slidably connected to the sliding column, a metal elastic member located below the pressing frame (9) is sleeved on the outer side of the sliding column, two ends of the metal elastic member are respectively fixedly connected to the pressing frame (9) and the top surface of the workbench (1), a through groove for the punch (7) and the punch (6) to penetrate is opened on the pressing frame (9), and an electromagnet (14) arranged corresponding to the metal elastic member is fixedly connected to the bottom surface of the workbench (1), and the electromagnet (14) is set to be powered on or off according to whether there is leather above the workbench (1).
2. The automatic punching machine for leather processing according to claim 1, characterized in that: The top surface of the workbench (1) is provided with a plurality of holes (8) for the punch (6) and the punch knife (7) to penetrate.
3. The automatic punching machine for leather processing according to claim 1, characterized in that: It also includes a leather detection circuit, which is coupled to the electromagnet (14) and is turned on and off according to whether there is leather above the workbench (1).
4. The automatic punching machine for leather processing according to claim 3, characterized in that: The leather detection circuit comprises a plurality of groups of light intensity sensors (10) and voltage comparison circuits (11), a plurality of groups of AND gate circuits (12), and a switch circuit (13). The probe of the light intensity sensor (10) is arranged to penetrate the top surface of the workbench (1) from bottom to top. The number of the light intensity sensors (10) is the same as the number of the voltage comparison circuits (11). The light intensity sensor (10) collects the ambient light intensity above the workbench (1) and feeds back a light intensity signal. The input end of the voltage comparison circuit (11) is coupled to the output end of the light intensity sensor (10). The voltage comparison circuit (11) feeds back a comparison signal after the light intensity signal is less than a preset light intensity reference signal. The number of the AND gate circuits (12) is one less than the number of the voltage comparison circuits (11). The plurality of the AND gate circuits (12) form a multi-stage gate circuit coupled to the plurality of voltage comparison circuits (11). The output end of the multi-stage gate circuit controls the on / off of the electromagnet (14) and the power supply through the switch circuit (13).
5. The automatic punching machine for leather processing according to claim 4, characterized in that: A button switch (15) is connected in series between the electromagnet (14) and the power supply.
6. The automatic punching machine for leather processing according to claim 4, characterized in that: The voltage comparison circuit (11) comprises a voltage comparator, the switch circuit (13) comprises a transistor switch, the base of the transistor switch is coupled to the output end of the multi-stage gate circuit, the collector of the transistor switch is connected to the electromagnet (14), the push button switch (15) and then to the power supply, and the emitter of the transistor switch is grounded.
7. The automatic punching machine for leather processing according to claim 4, characterized in that: The leather detection circuit further comprises a delay circuit (16) and a controller (17), wherein the controller (17) is an STM32 single chip microcomputer, wherein the input end of the delay circuit (16) is coupled to the output end of the switch circuit (13), the output end of the delay circuit (16) is coupled to the input end of the controller (17), and the output end of the controller (17) is coupled to the cylinder (3); after the switch circuit (13) is turned on, the delay circuit (16) is synchronously triggered and starts timing, and after the timing ends, a delay signal is sent to the controller (17); and after the delay signal, the controller (17) controls the cylinder (3) to work once.