Leather cutting and punching all-in-one machine

Abstract

The utility model discloses a leather cutting and punching all-in-one machine, belongs to the technical field of leather processing, and solves the problem that a single piece of leather is fed into the cutting and punching all-in-one machine through manual cooperation, so that the situation that workers or hands encounter a blade or a punching head in the working process is caused, and the working efficiency is improved. And the safety problem is caused. Comprising a workbench, a mounting frame fixedly connected to the workbench, a first air cylinder, a second air cylinder and a connecting plate, the first air cylinder and the second air cylinder are vertically and fixedly connected to the mounting frame, a plurality of stamping knives are fixedly connected to the bottom face of the connecting plate, the connecting plate is vertically and slidably connected into the mounting frame, and the bottom face of the connecting plate is fixedly connected with the movable end of the first air cylinder and the movable end of the second air cylinder. A safety circuit is also included. An infrared sensor and a distance sensor are used for detecting the hand position of a worker, a signal triggers an AND gate circuit, a normally-closed electric appliance switch is controlled to be switched off, power sources of the first air cylinder and the second air cylinder are cut off, knife stamping damage is prevented, and safety of the worker is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of leather processing, in particular to a leather cutting and punching integrated machine. Background Technique

[0002] A leather punching machine is a mechanical device specifically used for punching processing on flexible materials such as leather and fabric. Through precise molds and powerful pressure, it can quickly and accurately make holes of various shapes and sizes on the material. This equipment is widely used in fields such as shoes, luggage, clothing, and automotive interiors, not only improving production efficiency but also ensuring the quality and aesthetics of punching. The leather punching machine is easy to operate and maintain, and is one of the indispensable tools in modern manufacturing.

[0003] However, the current leather punching machines usually only perform the punching action on leather. If leather cutting is required, additional cutting blades need to be added to complete the cutting action of leather while punching. When the existing leather is being punched and cut, in order to ensure sufficient use of materials, a single piece of leather is manually fed into the cutting and punching integrated machine. However, this operation method may cause the situation where the hand encounters the blade or the punching head during the work process, resulting in safety problems.

[0004] Therefore, a leather cutting and punching integrated machine 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 defects existing in the prior art, and a leather cutting and punching integrated machine is proposed.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] A leather cutting and punching integrated machine includes a workbench, a mounting frame fixedly connected to the workbench, a first cylinder and a second cylinder vertically fixedly connected to the mounting frame, and a connecting plate. A plurality of punching knives are fixedly connected to the bottom surface of the connecting plate. The connecting plate is vertically slidably connected in the mounting frame, and the bottom surface of the connecting plate is fixedly connected to the movable ends of the first cylinder and the second cylinder. It further includes a safety circuit, which is coupled to the first cylinder and the second cylinder, and the safety circuit controls the first cylinder and the second cylinder to cut off power according to the change in the distance between the mounting frame and the workbench and the change in infrared rays.

[0008] Preferably, the safety circuit includes a plurality of distance sensors and infrared sensors fixedly connected to the mounting bracket. The probes of the distance sensors and the infrared sensors are located below the mounting bracket. The number of the distance sensors is the same as that of the infrared sensors. The distance sensors and the infrared sensors are alternately distributed in the width direction of the mounting bracket. The distance sensor collects the distance between it and the top surface of the workbench and feeds back a distance signal, and the infrared sensor collects the human body infrared rays between it and the top surface of the workbench and feeds back an infrared signal.

[0009] Preferably, the safety circuit further includes a first voltage comparison circuit, a second voltage comparison circuit, a judgment circuit, and a power-off circuit. The input end of the first voltage comparison circuit is coupled to the output end of the distance sensor. The input end of the second voltage comparison circuit is coupled to the output end of the infrared sensor. The first voltage comparison circuit receives the distance signal and outputs a first comparison signal after the distance signal is less than a preset distance reference signal therein. The second voltage comparison circuit receives the infrared signal and outputs a second comparison signal after the infrared signal is greater than a preset infrared reference signal therein. The input end of the judgment circuit is coupled to the output ends of the first voltage comparison circuit and the second voltage comparison circuit. The output end of the judgment circuit is coupled to the controlled end of the power-off circuit. The first cylinder and the second cylinder are connected to the power supply through the power-off circuit. The judgment circuit outputs a judgment signal in response to both the first comparison signal and the second comparison signal at the same time. The power-off circuit controls the power-off of the circuits where the first cylinder and the second cylinder are located in response to the judgment signal.

[0010] Preferably, both the first voltage comparison circuit and the second voltage comparison circuit include voltage comparators.

[0011] Preferably, the judgment circuit includes an AND gate circuit. The output ends of the first voltage comparison circuit and the second voltage comparison circuit are both coupled to the input end of the AND gate circuit. The output end of the AND gate circuit is coupled to the controlled end of the power-off circuit.

[0012] Preferably, the power-off circuit includes a triode switch circuit, a relay, and a normally closed relay switch. The base of the triode switch circuit is coupled to the output end of the AND gate circuit. The collector of the triode switch circuit is powered. The emitter of the triode switch circuit is connected to the relay and then grounded. One end of the normally closed relay switch is connected to the first cylinder and the second cylinder in series and then connected to the power supply. The other end of the normally closed relay switch is grounded.

[0013] The utility model has the following beneficial effects:

[0014] The utility model uses infrared and distance sensors to detect the position of the worker's hand, triggers the AND gate circuit with the signal, controls the normally closed relay switch to disconnect, cuts off the power supply of the first cylinder and the second cylinder, prevents the knife punching injury, and ensures the safety of the worker. Description of the Drawings

[0015] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the attached drawings required for the embodiments. It should be understood that the following attached drawings only show certain embodiments of the present invention, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other relevant attached drawings can also be obtained based on these attached drawings.

[0016] Figure 1 It is a structural schematic diagram of the present invention;

[0017] Figure 2 It is a structural block diagram of the safety circuit in the present invention;

[0018] Figure 3 It is a wiring diagram of the safety circuit in the present invention.

[0019] 1. Workbench; 2. Mounting frame; 3. First cylinder; 4. Second cylinder; 5. Connecting plate; 6. Distance sensor; 7. Infrared sensor; 8. First voltage comparison circuit; 9. Second voltage comparison circuit; 10. Judgment circuit; 11. Power-off circuit. Specific embodiments

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the attached drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and shown in the attached drawings here can be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the attached drawings is not intended to limit the scope of the present invention to be protected, but only represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0022] It should be noted that: similar reference numerals and letters represent similar items in the following attached drawings. Therefore, once an item is defined in one attached drawing, it does not need to be further defined and explained in subsequent attached drawings.

[0023] 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 drawings, or the orientation or positional relationship in which the product of the present utility model is customarily 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.

[0024] In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions and should not be understood as indicating or implying relative importance.

[0025] 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 situations.

[0026] A leather cutting and punching integrated machine, as Figure 1 shown, includes a workbench 1, a mounting frame 2 fixedly connected to the workbench 1, a first cylinder 3 and a second cylinder 4 vertically and fixedly connected to the mounting frame 2, and a connecting plate 5. A plurality of punching knives are fixedly connected to the bottom surface of the connecting plate 5. The connecting plate 5 is vertically slidably connected inside the mounting frame 2, and the bottom surface of the connecting plate 5 is fixedly connected to the movable ends of the first cylinder 3 and the second cylinder 4. It also includes a safety circuit, which is coupled to the first cylinder 3 and the second cylinder 4. The safety circuit controls the first cylinder 3 and the second cylinder 4 to cut off power according to the change in the distance between the mounting frame 2 and the workbench 1 and the change in infrared rays.

[0027] As Figure 2As shown in the figure, the safety circuit includes a plurality of distance sensors 6 and infrared sensors 7 fixedly connected to the mounting bracket 2, a voltage comparison circuit I 8, a voltage comparison circuit II 9, a judgment circuit 10, and a power-off circuit 11. The probes of the distance sensors 6 and the probes of the infrared sensors 7 are located below the mounting bracket 2. The number of the distance sensors 6 and the infrared sensors 7 is the same. The distance sensors 6 and the infrared sensors 7 are alternately arranged in the width direction of the mounting bracket 2. The distance sensors 6 collect the distance between them and the top surface of the workbench 1 and feedback distance signals. The infrared sensors 7 collect the human body infrared rays between them and the top surface of the workbench 1 and feedback infrared signals. The input end of the voltage comparison circuit I 8 is coupled to the output end of the distance sensor 6. The input end of the voltage comparison circuit II 9 is coupled to the output end of the infrared sensor 7. The voltage comparison circuit I 8 receives the distance signal and outputs a comparison signal I after the distance signal is less than the preset distance reference signal therein. The voltage comparison circuit II 9 receives the infrared signal and outputs a comparison signal II after the infrared signal is greater than the preset infrared reference signal therein. The input end of the judgment circuit 10 is coupled to the output ends of the voltage comparison circuit I 8 and the voltage comparison circuit II 9. The output end of the judgment circuit 10 is coupled to the controlled end of the power-off circuit 11. The air cylinder I 3 and the air cylinder II 4 are connected to the power supply through the power-off circuit 11. The judgment circuit 10 outputs a judgment signal after simultaneously responding to the comparison signal I and the comparison signal II. The power-off circuit 11 controls the power-off of the circuits where the air cylinder I 3 and the air cylinder II 4 are located in response to the judgment signal.

[0028] As Figure 3 shown in the figure, both the voltage comparison circuit I 8 and the voltage comparison circuit II 9 include voltage comparators. The judgment circuit 10 includes an AND gate circuit. The output ends of the voltage comparison circuit I 8 and the voltage comparison circuit II 9 are both coupled to the input end of the AND gate circuit. The output end of the AND gate circuit is coupled to the controlled end of the power-off circuit 11. The power-off circuit 11 includes a triode switch circuit, a relay, and a normally closed relay switch. The base of the triode switch circuit is coupled to the output end of the AND gate circuit. The collector of the triode switch circuit is powered. The emitter of the triode switch circuit is connected to the relay and then grounded. One end of the normally closed relay switch is connected in series with the air cylinder I 3 and the air cylinder II 4 and then connected to the power supply. The other end of the normally closed relay switch is grounded.

[0029] When the utility model is working, the infrared sensor 7 and the distance sensor 6 are used to detect whether a worker reaches his hand between the workbench 1 and the mounting bracket 2. If someone reaches his hand over, the distance sensor 6 will detect a change in the distance and feedback a distance signal. At this time, the distance signal is smaller than the distance reference signal in the first voltage comparison circuit 8. At this time, the first voltage comparison circuit 8 feeds back a first comparison signal. The infrared sensor 7 can detect the infrared rays emitted by the human body and feed back an infrared signal to the second voltage comparison circuit 9. After the infrared signal is greater than the infrared reference signal, the second voltage comparison circuit 9 also issues a second comparison signal. The two high-level signals are fed to the judgment circuit 10 which is an AND gate circuit together. The AND gate circuit outputs a high-level judgment signal. The high-level judgment signal is transmitted to the base of the triode switch circuit, so that the collector and the emitter of the triode switch circuit are turned on. In this way, the relay is energized, and the relay controls the normally closed relay switch to disconnect, so that the first cylinder 3 and the second cylinder 4 are powered off, and the first cylinder 3 and the second cylinder 4 will not drive the connecting plate 5 and the punching knife to move downward further, avoiding the worker reaching his hand under the punching knife and avoiding safety problems of the worker.

[0030] The above are only the preferred embodiments of the utility model and are not intended to limit the utility model. For those skilled in the art, the utility model can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included within the protection scope of the utility model.

Claims

1. A leather cutting and punching machine, characterized in that: The invention comprises a workbench (1), a mounting frame (2) fixedly connected to the workbench (1), a first cylinder (3) and a second cylinder (4) vertically fixedly connected to the mounting frame (2), and a connecting plate (5), wherein a plurality of punches are fixedly connected to the bottom surface of the connecting plate (5), the connecting plate (5) is vertically slidably connected in the mounting frame (2), and the bottom surface of the connecting plate (5) is fixedly connected to the movable ends of the first cylinder (3) and the second cylinder (4), and further comprises a safety circuit, wherein the safety circuit is coupled to the first cylinder (3) and the second cylinder (4), and the safety circuit controls the first cylinder (3) and the second cylinder (4) to cut off power according to the change of the distance between the mounting frame (2) and the workbench (1) and the change of infrared rays.

2. The leather cutting and punching machine according to claim 1, characterized in that: The safety circuit comprises a plurality of distance sensors (6) and infrared sensors (7) fixedly connected to the mounting frame (2); the probes of the distance sensors (6) and the probes of the infrared sensors (7) are located below the mounting frame (2); the number of the distance sensors (6) and the infrared sensors (7) is the same; the distance sensors (6) and the infrared sensors (7) are alternately distributed in the width direction of the mounting frame (2); the distance sensors (6) collect the distance between themselves and the top surface of the workbench (1) and feed back a distance signal; and the infrared sensors (7) collect infrared rays of the human body between themselves and the top surface of the workbench (1) and feed back an infrared signal.

3. The leather cutting and punching machine according to claim 2, characterized in that: The safety circuit further comprises a voltage comparison circuit 1 (8), a voltage comparison circuit 2 (9), a judgment circuit (10), and a power-off circuit (11). The input end of the voltage comparison circuit 1 (8) is coupled to the output end of the distance sensor (6), the input end of the voltage comparison circuit 2 (9) is coupled to the output end of the infrared sensor (7), the voltage comparison circuit 1 (8) receives the distance signal and outputs a comparison signal 1 when the distance signal is less than a preset distance reference signal, and the voltage comparison circuit 2 (9) receives the infrared signal and outputs a comparison signal 1 when the distance signal is greater than a preset infrared reference signal. The judgment circuit (10) outputs a comparison signal after receiving a comparison signal. The input end of the judgment circuit (10) is coupled to the output ends of the voltage comparison circuit (8) and the voltage comparison circuit (9). The output end of the judgment circuit (10) is coupled to the controlled end of the power-off circuit (11). The cylinder (3) and the cylinder (4) are connected to a power supply via the power-off circuit (11). The judgment circuit (10) simultaneously responds to the comparison signal (1) and the comparison signal (2) and outputs a judgment signal. The power-off circuit (11) controls the circuits of the cylinders (3) and (4) to be powered off in response to the judgment signal.

4. The leather cutting and punching machine according to claim 3, characterized in that: The voltage comparison circuit 1 (8) and the voltage comparison circuit 2 (9) both include a voltage comparator.

5. The leather cutting and punching machine according to claim 3, characterized in that: The judgment circuit (10) comprises an AND gate circuit, the output ends of the voltage comparison circuit 1 (8) and the voltage comparison circuit 2 (9) are coupled to the input end of the AND gate circuit, and the output end of the AND gate circuit is coupled to the controlled end of the power-off circuit (11).

6. The leather cutting and punching machine according to claim 5, characterized in that: The power-off circuit (11) comprises an AND gate circuit, a relay, and a normally closed relay switch. The base of the AND gate circuit is coupled to the output end of the AND gate circuit, the collector of the AND gate circuit is connected to electricity, the emitter of the AND gate circuit is connected to the relay and then to ground, one end of the normally closed relay switch is connected in series to cylinder one (3) and cylinder two (4) and then to a power source, and the other end of the normally closed relay switch is grounded.

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