Punching machine for accessories of draw-bar box

Abstract

The utility model discloses a draw-bar box accessory punching machine, belongs to the technical field of draw-bar box accessory production, and solves the problem that an operator is scratched carelessly or scratched by the edge of a plastic shell due to the fact that the edge of the plastic shell obtained through punching is too sharp. The mounting plate is arranged in the mounting frame and can vertically move in a reciprocating manner, the movable mold is fixedly connected to the bottom surface of the mounting plate, the fixed mold is fixedly connected in the mounting frame and is positioned below the movable mold, a circle of electric heating wire is fixedly connected to the edge of the fixed mold, and the electric heating control circuit is coupled with the electric heating wire. During working, an operator puts a plastic shell into the fixed die, the hydraulic cylinder drives the movable die to move upwards, the distance sensor feeds back a signal, the trigger circuit controls the heating wire to heat to a certain temperature and then is powered off, then the hydraulic cylinder drives the movable die to move downwards to punch the plastic shell, the heating wire heats the edge to avoid sharp edges, and the operator is protected.

Description

Technical Field

[0001] This utility model relates to the field of trolley case accessory manufacturing technology, and in particular to a trolley case accessory stamping machine. Background Technology

[0002] Plastic-shell rolling suitcases are widely popular due to their lightweight, durability, and cost-effectiveness. These suitcases are typically made of ABS, PC, or PC+ABS materials. ABS offers good hardness and moldability but is relatively heavy and prone to breakage upon impact. PC, on the other hand, is known for its lightweight, high toughness, and impact resistance, providing better protection against damage to contents. PC+ABS combines the advantages of both ABS and PC, offering the hardness of ABS and the impact resistance of PC. Plastic-shell rolling suitcases are usually equipped with 360-degree rotating silent wheels and height-adjustable handles, making them easy and effortless to pull. Furthermore, they come in a variety of designs to meet the individual needs of different consumers. Overall, plastic-shell rolling suitcases are an ideal choice for travel and everyday use due to their practicality and affordability.

[0003] When producing plastic-shell trolley cases, it is often necessary to cut off the excess plastic shell by punching, and then to coat the punched trolley case shell with a film. However, because the edges of the punched plastic shell are too sharp, operators may be scratched unintentionally or by rubbing against the edges of the plastic shell.

[0004] Therefore, a stamping machine for trolley case accessories is proposed to solve or alleviate the above problems. Utility Model Content

[0005] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a stamping machine for trolley case accessories.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A stamping machine for trolley case accessories includes a mounting frame, a mounting plate that can be vertically reciprocated within the mounting frame, a moving die fixedly connected to the bottom surface of the mounting plate, and a fixed die fixedly connected within the mounting frame and located below the moving die. A ring of heating wire is fixedly connected to the edge of the fixed die. The machine also includes a heating control circuit coupled to the heating wire. The heating control circuit controls the on / off state of the heating wire according to the position of the moving die and the temperature of the heating wire.

[0008] Preferably, a vertically downward-facing hydraulic cylinder is fixedly connected to the top of the mounting bracket, and the telescopic end of the hydraulic cylinder is fixedly connected to the top surface of the mounting plate.

[0009] Preferably, a plurality of guide rods are fixedly connected to the top surface of the mounting plate, and the guide rods are disposed through the top surface of the mounting base.

[0010] Preferably, the electrothermal control circuit includes

[0011] A distance sensor is disposed on the inner top surface of the mounting bracket, and the distance sensor is used to collect the distance between the mounting plate and the mounting bracket and output a distance signal;

[0012] A first voltage comparison circuit, wherein the input terminal of the first voltage comparison circuit is coupled to the output terminal of the distance sensor, and the first voltage comparison circuit outputs a first comparison signal in response to the distance signal being less than a preset distance reference signal.

[0013] A trigger circuit, wherein the input terminal of the trigger circuit is coupled to the output terminal of the first voltage comparison circuit, and the trigger circuit outputs a trigger signal in response to the first comparison signal;

[0014] A switching circuit, wherein the controlled terminal of the switching circuit is coupled to the output terminal of the trigger circuit, and the switching circuit controls the heating wire to be energized in response to the trigger signal.

[0015] Preferably, the electrothermal control circuit further includes

[0016] A non-contact infrared temperature sensor is provided, wherein the non-contact infrared temperature sensor is disposed on the inner side wall of the mounting base, and the probe of the non-contact infrared temperature sensor is oriented towards the fixed mold. The non-contact infrared temperature sensor collects the temperature of the heating wire and outputs a temperature signal.

[0017] The second voltage comparison circuit has its input terminal coupled to the output terminal of the non-contact infrared temperature sensor and its output terminal coupled to the input terminal of the switching circuit. In response to a temperature signal that is greater than a preset temperature reference signal, the second voltage comparison circuit outputs a second comparison signal to the switching circuit and controls the switching circuit to cut off the power to the heating wire.

[0018] Preferably, the first voltage comparison circuit includes a minimum circuit based on a first voltage comparator LM339, the output terminal of the distance sensor is coupled to the negative input terminal of the first voltage comparator LM339, and the trigger circuit includes an RS flip-flop.

[0019] Preferably, the second voltage comparison circuit includes a minimum circuit based on the second voltage comparator LM339, and the output terminal of the non-contact infrared temperature sensor is coupled to the positive input terminal of the second voltage comparator LM339.

[0020] Preferably, the switching circuit includes a transistor switch and a normally closed relay. The base of the transistor switch is coupled to the output terminal of the trigger circuit. The collector of the transistor switch is energized. The emitter of the transistor switch is connected to the relay and then to a heating wire. The controlled terminal of the normally closed relay is coupled to the output terminal of the second voltage comparison circuit.

[0021] This utility model has the following beneficial effects:

[0022] The operator places the plastic shell into the fixed mold, and the hydraulic cylinder moves the moving mold upward, while the guide rod moves smoothly. The distance sensor detects and sends a signal, triggering the circuit to control the heating wire to heat to a certain temperature before cutting off the power. The hydraulic cylinder then moves the moving mold downward to complete the punching process. The heating wire heats the edge of the fixed mold, causing the edge of the plastic shell to curl up and preventing damage from sharp edges. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 It is a structural diagram of the utility model;

[0025] Figure 2 This is a structural block diagram of the electrothermal control circuit in this utility model.

[0026] 1. Mounting base; 2. Hydraulic cylinder; 3. Guide rod; 4. Mounting plate; 5. Moving mold; 6. Fixed mold; 7. Distance sensor; 8. First voltage comparison circuit; 9. Trigger circuit; 10. Switching circuit; 11. Heating wire; 12. Non-contact infrared temperature sensor; 13. Second voltage comparison circuit. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0029] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0030] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0031] Furthermore, the terms "first," "second," and "third" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0032] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] A stamping machine for trolley case accessories, such as Figure 1 As shown, the system includes a mounting frame, a mounting plate 4 that can move vertically back and forth within the mounting frame, a movable mold 5 fixedly connected to the bottom surface of the mounting plate 4, and a fixed mold 6 fixedly connected within the mounting frame and located below the movable mold 5. A vertically downward-facing hydraulic cylinder 2 is fixedly connected to the top of the mounting frame, and the telescopic end of the hydraulic cylinder 2 is fixedly connected to the top surface of the mounting plate 4. Several guide rods 3 are fixedly connected to the top surface of the mounting plate 4, and the guide rods 3 are arranged through the top surface of the mounting base 1. A ring of heating wire 11 is fixedly connected to the edge of the fixed mold 6.

[0034] It also includes an electric heating control circuit, which is coupled to the heating wire 11. The electric heating control circuit controls the on / off setting of the heating wire 11 according to the position of the moving mold 5 and the temperature of the heating wire 11.

[0035] like Figure 2 As shown, the electrothermal control circuit includes a distance sensor 7, a first voltage comparator circuit 8, a trigger circuit 9, a switching circuit 10, a non-contact infrared temperature sensor 12, and a second voltage comparator circuit 13. The first voltage comparator circuit 8 includes a minimum circuit based on a first voltage comparator LM339. The output terminal of the distance sensor 7 is coupled to the negative input terminal of the first voltage comparator LM339. The trigger circuit 9 includes an RS flip-flop. The second voltage comparator circuit 13 includes a minimum circuit based on a second voltage comparator LM339. The output terminal of the non-contact infrared temperature sensor 12 is coupled to the positive input terminal of the second voltage comparator LM339. The switching circuit 10 includes a transistor switch and a normally closed relay. The base of the transistor switch is coupled to the output terminal of the trigger circuit 9. The collector of the transistor switch is energized. The emitter of the transistor switch is connected to the relay and then to the heating wire 11. The controlled terminal of the normally closed relay is coupled to the output terminal of the second voltage comparator circuit 13.

[0036] Distance sensor 7 is installed on the inner top surface of the mounting bracket. Distance sensor 7 is used to collect the distance between the mounting plate 4 and the distance sensor 7 and output a distance signal. The input terminal of the first voltage comparison circuit 8 is coupled to the output terminal of the distance sensor 7. The first voltage comparison circuit 8 outputs a first comparison signal after the distance signal is less than a preset distance reference signal. The input terminal of the trigger circuit 9 is coupled to the output terminal of the first voltage comparison circuit 8. The trigger circuit 9 outputs a trigger signal after responding to the first comparison signal. The controlled terminal of the switch circuit 10 is coupled to the output terminal of the trigger circuit 9. The switch circuit 10 controls the heating wire 11 to be energized after responding to the trigger signal. The contact infrared temperature sensor 12 is mounted on the inner wall of the mounting base 1, and the probe of the non-contact infrared temperature sensor 12 is positioned facing the fixed mold 6. The non-contact infrared temperature sensor 12 collects the temperature of the heating wire 11 and outputs a temperature signal. The input terminal of the second voltage comparison circuit 13 is coupled to the output terminal of the non-contact infrared temperature sensor 12, and the output terminal of the second voltage comparison circuit 13 is coupled to the input terminal of the switch circuit 10. In response to the temperature signal being greater than the preset temperature reference signal, the second voltage comparison circuit 13 outputs a second comparison signal to the switch circuit 10 and controls the switch circuit 10 to cut off the power to the heating wire 11.

[0037] In actual operation, the operator places the plastic shell to be punched into the fixed mold 6. At this time, the hydraulic cylinder 2 pulls the mounting plate 4 and the moving mold 5 upward. The displacement of the mounting plate 4 causes the guide rod 3 to move upward. The mounting seat 1 limits the guide rod 3, thus making the displacement of the mounting plate 4 and the moving mold 5 more stable. At the same time, the distance sensor 7 detects that the distance between itself and the mounting plate 4 has decreased, and then feeds back a distance signal to the first voltage comparison circuit 8. The first voltage comparison circuit 8 responds to the distance signal being less than the preset distance reference signal and outputs a first comparison signal to the trigger circuit 9, so that the trigger circuit 9 can output a trigger signal to the base of the transistor switch, so that the collector and emitter of the transistor switch are turned on, and then through the normally closed relay... The electric heating wire 11 is energized and heated to a certain temperature. Then, the probe of the non-contact infrared temperature sensor 12 detects the temperature of the heating wire 11 and feeds back the temperature signal to the second voltage comparison circuit 13. The second voltage comparison circuit 13 responds to the temperature signal being greater than the preset temperature reference signal and outputs a second comparison signal to the switching circuit 10, which then controls the switching circuit 10 to cut off the power to the heating wire 11. Subsequently, the hydraulic cylinder 2 drives the mounting plate 4 and the moving mold 5 to move downwards, which, together with the fixed mold 6, completes the punching action of the plastic shell. Moreover, since the heating wire 11 is located at the edge of the fixed mold 6, the edge of the punched plastic shell can be rolled up after being heated by the heating wire 11, avoiding sharp edges and preventing operators from accidentally touching and getting injured.

[0038] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A stamping machine for suitcase accessories, characterized in that, The device includes a mounting frame, a mounting plate (4) that can be vertically moved back and forth within the mounting frame, a moving mold (5) fixedly connected to the bottom surface of the mounting plate (4), and a fixed mold (6) fixedly connected within the mounting frame and located below the moving mold (5). A ring of heating wire (11) is fixedly connected to the edge of the fixed mold (6). The device also includes an electric heating control circuit, which is coupled to the heating wire (11). The electric heating control circuit controls the on / off setting of the heating wire (11) according to the position of the moving mold (5) and the temperature of the heating wire (11).

2. The stamping machine for trolley case accessories according to claim 1, characterized in that, A vertically downward-facing hydraulic cylinder (2) is fixedly connected to the top of the mounting frame, and the telescopic end of the hydraulic cylinder (2) is fixedly connected to the top surface of the mounting plate (4).

3. A stamping machine for suitcase accessories according to claim 1, characterized in that, The top surface of the mounting plate (4) is fixedly connected with several guide rods (3), which are arranged through the top surface of the mounting base (1).

4. A stamping machine for suitcase accessories according to claim 1, characterized in that, The electric heating control circuit includes Distance sensor (7), the distance sensor (7) is disposed on the inner top surface of the mounting bracket, the distance sensor (7) is used to collect the distance between the mounting plate (4) and the mounting plate (4) and output a distance signal; The first voltage comparison circuit (8) is coupled to the output of the distance sensor (7). The first voltage comparison circuit (8) outputs a first comparison signal in response to the distance signal being less than a preset distance reference signal. A trigger circuit (9) is provided, wherein the input terminal of the trigger circuit (9) is coupled to the output terminal of the first voltage comparison circuit (8), and the trigger circuit (9) outputs a trigger signal in response to the first comparison signal. A switching circuit (10) is provided, wherein the controlled end of the switching circuit (10) is coupled to the output end of the trigger circuit (9), and the switching circuit (10) controls the heating wire (11) to be energized in response to the trigger signal.

5. A stamping machine for trolley case accessories according to claim 4, characterized in that, The electric heating control circuit also includes A non-contact infrared temperature sensor (12) is provided on the inner wall of the mounting base (1), and the probe of the non-contact infrared temperature sensor (12) is set towards the fixed mold (6). The non-contact infrared temperature sensor (12) collects the temperature of the heating wire (11) and outputs a temperature signal. The second voltage comparison circuit (13) has its input terminal coupled to the output terminal of the non-contact infrared temperature sensor (12) and its output terminal coupled to the input terminal of the switch circuit (10). In response to the temperature signal being greater than the preset temperature reference signal, the second voltage comparison circuit (13) outputs a second comparison signal to the switch circuit (10) and controls the switch circuit (10) to cut off the power to the heating wire (11).

6. A stamping machine for suitcase accessories according to claim 5, characterized in that, The first voltage comparison circuit (8) includes a minimum circuit based on the first voltage comparator LM339, the output terminal of the distance sensor (7) is coupled to the negative input terminal of the first voltage comparator LM339, and the trigger circuit (9) includes an RS flip-flop.

7. A stamping machine for trolley case accessories according to claim 5, characterized in that, The second voltage comparison circuit (13) includes a minimum circuit based on the second voltage comparator LM339, and the output of the non-contact infrared temperature sensor (12) is coupled to the positive input of the second voltage comparator LM339.

8. A stamping machine for suitcase accessories according to claim 5, characterized in that, The switching circuit (10) includes a transistor switch and a normally closed relay. The base of the transistor switch is coupled to the output terminal of the trigger circuit (9). The collector of the transistor switch is energized. The emitter of the transistor switch is connected to the relay and then to the heating wire (11). The controlled terminal of the normally closed relay is coupled to the output terminal of the second voltage comparison circuit (13).

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