Electrothermal fabric cutting machine

Abstract

A fabric electrothermal cutting machine includes a base unit, a first drive unit, a second drive unit, at least a first guide sliding unit, a second guide sliding unit, a fabric pressing unit, and an electrothermal cutting unit. The fabric pressing unit can be driven and released by the first drive unit, and guided by the first guide sliding unit, to move between an open position and a closed position, allowing the fabric to pass through and pressing and fixing the fabric onto the table surface of the base unit. The electrothermal cutting unit can be synchronously driven and released by the second drive unit, thereby generating displacement and resetting, and can apply an electrothermal melting cutting action to the corresponding part of the pressed and fixed fabric to achieve the effect of fast, stable and precise fabric cutting.

Claims

1. A fabric electrothermal cutting machine, comprising: A base unit on which a platform is formed, through which the fabric can pass; A first drive unit is mounted and fixed on the base unit; A second drive unit is mounted and fixed on the base unit; at least one first guide sliding unit includes a first fixing member and a first guide sliding member that can slide vertically along the first fixing member; the first fixing member is mounted and fixed on the base unit; a second guide sliding unit includes a second fixing member and a second guide sliding member that can slide vertically along the second fixing member; the second fixing member is mounted and fixed on the base unit; the second guide sliding member is normally positioned in a lower position, and when driven by the second drive unit, it can slide vertically upward along the second fixing member to an upper position; when the driving force of the second drive unit is released, it can automatically slide vertically downward back to the lower position by its own gravity. A fabric pressing unit is movably disposed above the platform of the base unit and has a first side, a second side, and a pressing surface formed between the first side and the second side. The first side is connected to a first guide member of the first guide unit and is driven upward by the first drive unit. With the first guide member sliding longitudinally upward along the first fixed member, the fabric pressing unit can be raised from a closed position to an open position, forming a passage space with the platform, allowing the fabric to pass through. When the driving force of the first drive unit is released, the first side can act downward by its own weight, with the first guide member sliding longitudinally downward along the first fixed member, allowing the fabric pressing unit to automatically descend to the closed position, pressing and fixing the fabric against the platform of the base unit and between the pressing surfaces of the fabric pressing unit. An electrothermal cutting unit includes a heating wire, and a first insulating member and a second insulating member respectively connected and fixed to the two ends of the heating wire; the two ends of the heating wire inside the first insulating member and the second insulating member are electrically connected to a power source, and the heating wire can generate a high-temperature electrothermal effect by the power provided by the power source; the first insulating member is connected and fixed to the second sliding member of the second sliding unit; The second insulating member is configured and fixed on the second side relative to the pressing unit; when the second guide member is in the lower position, the heating wire is located below the platform of the base unit; when the first insulating member slides upward longitudinally to the upper position along with the second guide member, at least most of the heating wire can be moved upward and displaced beyond the platform, thereby applying an electrothermal melting cutting action to the relative part of the fabric that is pressed and fixed between the platform and the pressing surface.

2. The fabric electrothermal cutting machine as described in claim 1, wherein, The first drive unit includes a first actuator and at least a first traction rope; one end of the first traction rope is connected to the first actuator, and the other end is connected to the first side of the pressing unit. By pulling or releasing the first traction rope with the first actuator, the pressing unit can be pulled to rise from the closed position to the open position, or the pressing unit can be released to automatically descend from the open position to the closed position.

3. The fabric electrothermal cutting machine as described in claim 2, wherein, The first actuator may be a linear actuator or an electric motor.

4. The fabric electrothermal cutting machine as described in claim 3, wherein, The linear actuator can be any of a pneumatic cylinder, a hydraulic cylinder, or an electric cylinder.

5. The fabric electrothermal cutting machine as described in claim 2, wherein, The first drive unit further includes at least one first fixed part and at least one first fixed pulley; the first fixed part is connected to the base unit; the first fixed pulley is installed on the first fixed part and can be wound around the first traction rope.

6. The fabric electrothermal cutting machine as described in claim 5, wherein, The first fixing part is formed on the second fixing member of the second guide sliding unit, and is connected to the base unit by the bottom end of the second fixing member.

7. The fabric electrothermal cutting machine as described in claim 5, wherein, The base unit includes a base plate and two spaced-apart support crossbars. The base plate can be used to install and fix the support crossbars, the first drive unit, the second drive unit, the first guide slide unit, and the second guide slide unit. Each support crossbar has a support plane at its top, which together define the platform, and a receiving space is formed at the interval between them, which can at least accommodate the heating wire of the electrothermal cutting unit. The pressing unit includes two spaced-apart pressing crossbars, which are located above the support crossbars. Each pressing crossbar has a pressing plane at its bottom, which together define the pressing surface. The two ends of the pressing crossbars have a first side and a second side, respectively. A penetrating space is formed at the interval between the pressing crossbars, which allows the heating wire to enter when it moves upward beyond the platform.

8. The fabric electrothermal cutting machine as described in claim 7, wherein, The second side of the pressing crossbar is limited or pivotally connected to the opposite ends of each of the opposite supporting crossbars, while allowing the first side to be longitudinally raised and automatically lowered; the first actuator is connected to a first traction rope on each of the two opposite sides, and each first traction rope is wound around two first fixed pulleys and then connected to the first side of each of the opposite pressing crossbars.

9. The fabric electrothermal cutting machine as described in claim 7, wherein, The first drive unit further includes a fixed frame and a guide slide member; the fixed frame is installed and fixed on the base plate of the base unit relative to the second side of the pressing crossbar; the guide slide member is fixed on the fixed frame and located above the second side of the pressing crossbar; the first actuator has two first traction ropes connected to each of its two opposite sides, one of the first traction ropes on each side is wound around two first fixed pulleys and then connected to the first side of the opposite pressing crossbar, and the other of the first traction ropes on each side is wound around or guided through two first fixed pulleys and then wound around and guided to the guide slide member and fixed to the second side of the pressing crossbar, so that the first side and the second side of the pressing crossbar can be raised to the open position and lowered to the closed position simultaneously.

10. The fabric electrothermal cutting machine as described in claim 1, wherein, The second drive unit includes a second actuator and a second traction rope; one end of the second traction rope is connected to the second actuator, and the other end is connected to the second guide member of the second guide unit. By pulling or releasing the second traction rope, the second guide member can be pulled to rise from the lower position to the upper position, or released to automatically descend from the upper position back to the lower position.

11. The fabric electrothermal cutting machine as described in claim 10, wherein, The second actuator may be a linear actuator or an electric motor.

12. The fabric electrothermal cutting machine as described in claim 11, wherein, The linear actuator can be any of a pneumatic cylinder, a hydraulic cylinder, or an electric cylinder.

13. The fabric electrothermal cutting machine as described in claim 10, wherein, The second drive unit further includes a second fixed part and a second fixed pulley; the second fixed part is connected to the base unit; the second fixed pulley is installed on the second fixed part and can be wound around the second traction rope.

14. The fabric electrothermal cutting machine as described in claim 13, wherein, The second fixing part is formed on the second fixing member of the second guide sliding unit, and is connected to the base unit by the bottom end of the second fixing member.

15. The fabric electrothermal cutting machine as described in claim 1, wherein, The base unit includes a base plate and two spaced-apart support crossbars. The base plate can be used to install and fix the support crossbars, the first drive unit, the second drive unit, the first guide slide unit, and the second guide slide unit. Each support crossbar has a support plane at its top, which together define the platform, and a receiving space is formed at the interval between them, which can at least accommodate the heating wire of the electrothermal cutting unit. The pressing unit includes two spaced-apart pressing crossbars, which are located above the support crossbars. Each pressing crossbar has a pressing plane at its bottom, which together define the pressing surface. The two ends of the pressing crossbars have a first side and a second side, and the second side can be limited or pivotally connected to the opposite ends of the respective support crossbars.

16. The fabric electrothermal cutting machine as described in claim 1, wherein, The first fixing member includes a base connected to the base unit and a guide rod with its bottom end connected to the base; the first guide rod has a sliding hole through which it is fitted.

17. The fabric electrothermal cutting machine as described in claim 1, wherein, The second fixing member is a long rectangular frame with two opposing sliding walls. Each sliding wall has a protruding rib, and each rib has two interconnected V-shaped sliding surfaces. The second sliding member includes a U-shaped frame with two opposing mounting walls inside. At least one V-shaped pulley is fixed on each mounting wall and can slide against the opposing sliding surfaces on the second fixing member, allowing the second sliding member to be fitted and confined on the second fixing member and slide along the upper and lower longitudinal direction of the second fixing member.

18. The fabric electrothermal cutting machine as claimed in claim 1 further includes a control unit and a sensing unit; the control unit can switch and control the first drive unit, the second drive unit and the electrothermal cutting unit; the sensing unit can detect the drive positions of the first drive unit and the second drive unit and transmit the position signals to the control unit for signal processing and switch control.

19. The fabric electrothermal cutting machine as described in claim 1, wherein, The electrothermal cutting unit further includes a first elastic element and a second elastic element; the two ends of the first elastic element are respectively connected between the first insulating member and the second guide member; the two ends of the second elastic element are respectively connected between the second insulating member and the base unit.

20. The fabric electrothermal cutting machine as described in claim 19, wherein, The first insulating member and the second insulating member are configured to be at least partially insulating members, and each includes an outer sleeve and an insulator; the outer sleeve may be a non-insulator and is connected to the first elastic element or the second elastic element; the insulator is covered and positioned within the outer sleeve and connected to the opposite end of the heating wire.

21. The fabric electrothermal cutting machine as described in claim 20, wherein, The first insulating member has a positioning plate and a threading plate at one end of the support crossbar of the base unit relative to the second side. The positioning plate can support the outer shell of the second insulating member from the bottom. A connecting rope is provided between the outer shell of the second insulating member and the second elastic element. The connecting rope can pass through the threading plate.

22. The fabric electrothermal cutting machine as claimed in claim 1 further includes a third drive unit, the third drive unit including a third actuator and a pusher connected to the third actuator; the third actuator is mounted and fixed on the base unit and operates synchronously with the second drive unit; the pusher can be driven by the third actuator to lift the second insulating member of the electrothermal cutting unit upward, so that the entire heating wire can be moved upward above the table surface, and automatically descends and resets when the third actuator resets.

23. The fabric electrothermal cutting machine as described in claim 22, wherein, The third actuator can be a linear actuator or an electric motor.

24. The fabric electrothermal cutting machine as described in claim 23, wherein, The linear actuator can be any of a pneumatic cylinder, a hydraulic cylinder, or an electric cylinder.

25. The fabric electrothermal cutting machine as claimed in claim 9 further includes an anti-re-adhesion unit, the anti-re-adhesion unit including two fourth actuators and a pressure member connected at both ends to the fourth actuators; the fourth actuators are respectively mounted and fixed on the pressure crossbars of the fabric pressing unit relative to the first side and the second side, and actuate as the pressure crossbars rise and fall; the pressure member, before the heating wire of the electrothermal cutting unit moves downward beyond the table, is first driven by the fourth actuators, and moves downward to press against the upper surfaces of the two corresponding adjacent selvages of the fabric that have been cut and broken, and allows the heating wire to be accommodated in the pressure member, while forcing the selvages to separate from each other to form a sufficient width.

26. The fabric electrothermal cutting machine as described in claim 25, wherein, The fourth actuator may be a linear actuator or an electric motor.

27. The fabric electrothermal cutting machine as described in claim 26, wherein, The linear actuator can be any of a pneumatic cylinder, a hydraulic cylinder, or an electric cylinder.

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