Laser cutting device for producing engineering plastic PC board

Abstract

The utility model relates to the technical field of plastic production, especially a laser cutting device for producing engineering plastic PC board. The utility model discloses a workbench, be located with fixed mechanism for PC board on the workbench, be located on one side of the workbench and be used to cut the laser cutting mechanism of PC board, the protection mechanism of cover is located the fixed mechanism and the upper laser cutting mechanism, the protection mechanism includes a pair of respectively hinged and set up on the both sides of the upper surface of workbench and the protection half -shell that forms a complete protection cover after splicing, the switch of fixed embedding in one protection half -shell inner end surface and with laser cutting mechanism electricity is connected, the pressing piece of fixedly being located in the other protection half -shell inner end surface and being used for pressing the switch and a pair of symmetry is located between two protection half -shell and is used for the fixed component of two protection half -shell fixed. The device can realize that the laser cutting head stops working automatically when the protection cover opens.

Description

Technical Field

[0001] This utility model relates to the field of plastic production technology, and in particular to a laser cutting device for producing engineering plastic PC sheets. Background Technology

[0002] Laser cutting is a commonly used processing method in the production and processing of engineering plastic PC sheets. Its principle is as follows: the laser emitted by the laser is focused into a high-power-density laser beam by an optical path system. The laser beam irradiates the surface of the PC sheet, causing the irradiated area to reach its melting or boiling point. Simultaneously, high-pressure gas coaxial with the beam blows away the molten or vaporized plastic. As the relative position of the beam and the PC sheet moves, a slit is eventually formed on the PC sheet, achieving the cutting purpose.

[0003] However, PC sheets possess high toughness and low thermal conductivity, and are prone to generating sticky slag during laser cutting. This makes it difficult to match them with the high precision and low thermal deformation requirements of laser cutting. Minor anomalies in the laser cutting head (such as positional misalignment or power fluctuations) are amplified by these material properties of PC sheets, directly leading to equipment malfunctions, scrapped PC sheet workpieces, and even safety hazards. Therefore, during laser cutting, operators frequently need to closely observe the laser cutting head to promptly detect and address any abnormalities.

[0004] Existing laser cutting equipment for PC boards typically includes a protective cover to reduce injuries from flying debris during cutting. However, in practice, when workers need to open the protective cover to closely observe the cutting head, the laser cutting function must be turned off first to ensure safety. However, existing equipment lacks a corresponding protective device, meaning the laser cutting head may remain operational while the protective cover is open, continuing to cut the PC board. This can easily cause flying debris and sticky waste, injuring workers and seriously impacting production safety. Utility Model Content

[0005] In order to solve the above problems, the purpose of this utility model is to provide a laser cutting device for producing engineering plastic PC boards, which can automatically stop the laser cutting head when the protective cover is opened.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A laser cutting device for producing engineering plastic PC sheets includes a worktable, a fixing mechanism disposed on the worktable for fixing the PC sheet, a laser cutting mechanism disposed on one side of the worktable for cutting the PC sheet, and a protective mechanism covering the fixing mechanism and the laser cutting mechanism. The protective mechanism includes a pair of protective half-shells respectively hinged to both sides of the upper surface of the worktable and assembled to form a complete protective cover, a switch fixedly embedded in the inner end face of one of the protective half-shells and electrically connected to the laser cutting mechanism, a pressing member fixedly disposed in the inner end face of the other protective half-shell for pressing the switch, and a pair of fixing components symmetrically disposed between the two protective half-shells for fixing the two protective half-shells.

[0008] More preferably, each set of fixing components includes a retainer embedded in one side of the inner end face of one of the protective half-shells and a retainer fixed to the corresponding position on the inner end face of the other protective half-shell and cooperating with the retainer for fixation.

[0009] More preferably, the laser cutting mechanism includes a pair of slide rails vertically embedded on both sides of the upper surface of the worktable, a pair of first electric sliders slidably disposed in the corresponding slide rails, a pair of mounting plates vertically fixed on the outer side of the corresponding first electric sliders, a guide rail horizontally fixed between the two mounting plates and located above the worktable, a second electric slider slidably disposed on the guide rail, an electric push rod vertically fixed on the lower surface of the second electric slider, and a laser cutting head fixed on the lower surface of the electric push rod.

[0010] More preferably, the workbench has a cavity, and the upper surface of the workbench is provided with a plurality of suction ports that communicate with the cavity at intervals; the fixing mechanism includes a collection box located on one side of the workbench, a suction pipe with one end communicating with the collection box and the other end passing through the workbench and communicating with the cavity, and a suction pump communicating with the suction pipe.

[0011] This utility model has the following beneficial effects:

[0012] 1. In this device, through the cooperation of the switch and the pressing part in the protective mechanism, the laser cutting mechanism can only work normally when the two protective half shells are joined together; when the protective half shell is opened, the switch is automatically disconnected and the laser cutting mechanism stops working, which fundamentally avoids the injury caused by the cutting head still working when the protective cover is opened, and greatly improves production safety.

[0013] 2. In this device, the fixing mechanism secures the PC board using negative pressure adsorption, ensuring a stable fixation without damaging the PC board surface and preventing displacement during cutting. Simultaneously, the collection box and suction pipe in the fixing mechanism work in conjunction with the cavity and suction port of the worktable. While adsorbing the PC board, the suction port not used for adsorption can simultaneously collect the cutting debris and waste generated, keeping the worktable surface and the surrounding environment clean and reducing the impact of waste on cutting accuracy and equipment lifespan. Attached Figure Description

[0014] Figure 1 This is a front view of the laser cutting device;

[0015] Figure 2 This is a schematic diagram of the cross-section at point AA;

[0016] Figure 3 This is a schematic diagram of the cross-section at point BB.

[0017] Explanation of reference numerals in the attached figures:

[0018] 1. Workbench; 11. Cavity; 12. Suction port; 2. Fixing mechanism; 21. Collection box; 22. Suction pipe; 23. Suction pump; 3. Laser cutting mechanism; 31. Slide rail; 32. First electric slider; 33. Mounting plate; 34. Guide rail; 35. Second electric slider; 36. Electric push rod; 37. Laser cutting head; 4. Protective mechanism; 41. Protective half shell; 42. Switch; 43. Pressing element; 44. Fixing assembly; 441. Card holder; 442. Card block. Detailed Implementation

[0019] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] A laser cutting device for producing engineering plastic PC sheets includes a worktable 1, a fixing mechanism 2 disposed on the worktable 1 for fixing the PC sheet, a laser cutting mechanism 3 disposed on one side of the worktable 1 for cutting the PC sheet, and a protective mechanism 4 covering the fixing mechanism 2 and the laser cutting mechanism 3. The protective mechanism 4 includes a pair of protective half-shells 41 respectively hinged to both sides of the upper surface of the worktable 1 and forming a complete protective cover when assembled, a switch 42 fixedly embedded in the inner end face of one of the protective half-shells 41 and electrically connected to the laser cutting mechanism 3, a pressing member 43 fixedly disposed in the inner end face of the other protective half-shell 41 for pressing the switch 42, and a pair of fixing components 44 symmetrically disposed between the two protective half-shells 41 for fixing the two protective half-shells 41.

[0021] The switch 42 in the protective mechanism 4 is linked with the pressing part 43. The laser cutting mechanism 3 can only work normally when the two protective half-shells 41 are joined together. When the protective half-shell 41 is opened, the switch 42 is automatically disconnected and the laser cutting mechanism 3 stops working. This fundamentally avoids the injury caused by flying debris when the cutting head is still working when the protective cover is opened, and greatly improves production safety. The protective half-shell 41 is made of transparent material, so the staff can observe the status of the cutting head without opening the protective cover. If close observation is required, the cutting head will automatically stop when the protective half-shell 41 is opened. The observation process is safe and reliable and meets the need for timely detection of minor abnormalities in the cutting head.

[0022] As a possible implementation of this solution, preferably, each set of fixing components 44 includes a card holder 441 embedded in one side of the inner end face of one of the protective half shells 41 and a card block 442 fixed to the corresponding position of the inner end face of the other protective half shell 41 and cooperating with the card holder 441 for fixation.

[0023] As a possible implementation of this solution, preferably, the laser cutting mechanism 3 includes a pair of slide rails 31 vertically embedded on both sides of the upper surface of the worktable 1, a pair of first electric sliders 32 respectively slidably disposed in the corresponding slide rails 31, a pair of mounting plates 33 respectively vertically fixed to the outer side of the corresponding first electric sliders 32, a guide rail 34 horizontally fixed between the two mounting plates 33 and located above the worktable 1, a second electric slider 35 slidably disposed on the guide rail 34, an electric push rod 36 vertically fixed to the lower surface of the second electric slider 35, and a laser cutting head 37 fixed to the lower surface of the electric push rod 36; the laser cutting mechanism 3 can realize adjustment in the horizontal, vertical and height directions, can accurately position the cutting position, and ensure cutting accuracy.

[0024] As a possible implementation of this solution, preferably, the workbench 1 is provided with a cavity 11, and the upper surface of the workbench 1 is provided with a plurality of suction ports 12 that communicate with the cavity 11 at intervals; the fixing mechanism 2 includes a collection box 21 located on one side of the workbench 1, a suction pipe 22 with one end communicating with the collection box 21 and the other end passing through the workbench 1 and communicating with the cavity 11, and a suction pump 23 communicating with the suction pipe 22; the fixing mechanism 2 fixes the PC board by negative pressure adsorption, which is stable and will not damage the surface of the PC board, and avoids the PC board from shifting during the cutting process; at the same time, the collection box 21 and suction pipe 22 in the fixing mechanism 2 cooperate with the cavity 11 and suction ports 12 of the workbench, so that while adsorbing the PC board, the suction ports 12 not used for adsorption can simultaneously collect the debris and waste generated during cutting, keep the surface of the workbench and the surrounding environment of the device clean, and reduce the impact of waste on cutting accuracy and equipment life.

[0025] The working principle of this device is as follows:

[0026] First, place the PC board to be cut on the upper surface of the workbench 1, ensuring that the PC board covers part of the suction port 12; start the suction pump 23, the suction pump 23 draws air from the cavity 11 through the suction pipe 22, so that the cavity 11 forms a negative pressure, and the PC board is tightly adsorbed on the workbench 1 under the action of atmospheric pressure, thus completing the fixation of the PC board.

[0027] Next, the two protective half-shells 41 are rotated and joined together in the middle. At this time, the locking block 442 is inserted into the slot of the locking seat 441, and the two protective half-shells 41 are fixed. At the same time, the pressing part 43 presses the switch 42, the switch 42 is closed, and the control circuit of the laser cutting mechanism 3 is turned on. According to the cutting requirements, the first electric slider 32 is moved laterally along the slide rail 31 and the second electric slider 35 is moved longitudinally along the guide rail 34 by the external control system (not shown) to adjust the horizontal position of the laser cutting head 37. The electric push rod 36 is controlled to extend and retract to adjust the distance between the laser cutting head 37 and the PC board. The external laser is started, and the laser cutting head 37 emits a laser beam to cut the PC board. The debris and waste generated by cutting enter the collection box 21 through the suction port 12, the cavity 11, and the suction pipe 22 for collection.

[0028] During the cutting process, if it is necessary to observe the status of the laser cutting head 37 at close range, the operator pulls the protective half-shell 41 outward, causing the locking block 442 to disengage from the locking seat 441, and the protective half-shell 41 opens. At this time, the pressing component 43 separates from the switch 42, the switch 42 is turned off, the control circuit of the laser cutting mechanism 3 is cut off, and the laser cutting head 37 stops emitting laser. The operator can observe the laser cutting head 37 at close range through the opened protective half-shell 41 to check for abnormalities. After the observation is completed, the protective half-shell 41 is reassembled, the pressing component 43 presses the switch 42, and the laser cutting mechanism 3 can be restarted to continue the cutting work.

[0029] Finally, after the PC board is cut, turn off the laser and suction pump 23, open the protective half-shell 41, and remove the cut PC board; open the removable cover of the collection box 21, clean the debris and waste inside the collection box 21, and complete one cutting operation.

[0030] The above description is only a specific embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural transformations made based on the contents of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A laser cutting device for producing engineering plastic PC sheets, characterized in that: It includes a workbench (1), a fixing mechanism (2) set on the workbench (1) for fixing the PC board, a laser cutting mechanism (3) set on one side of the workbench (1) for cutting the PC board, and a protective mechanism (4) covering the fixing mechanism (2) and the laser cutting mechanism (3). The protective mechanism (4) includes a pair of protective half-shells (41) that are respectively hinged to both sides of the upper surface of the workbench (1) and assembled to form a complete protective cover, a switch (42) that is fixedly embedded in the inner end face of one of the protective half-shells (41) and electrically connected to the laser cutting mechanism (3), a pressing member (43) that is fixed in the inner end face of the other protective half-shell (41) and used to press the switch (42), and a pair of fixing components (44) that are symmetrically arranged between the two protective half-shells (41) and used to fix the two protective half-shells (41).

2. The laser cutting device for producing engineering plastic PC sheets according to claim 1, characterized in that: Each set of fixing components (44) includes a retainer (441) embedded in one side of the inner end face of one of the protective half shells (41) and a retainer (442) fixed in the corresponding position of the inner end face of the other protective half shell (41) and cooperating with the retainer (441).

3. The laser cutting device for producing engineering plastic PC sheets according to claim 1, characterized in that: The laser cutting mechanism (3) includes a pair of slide rails (31) vertically embedded on both sides of the upper surface of the worktable (1), a pair of first electric sliders (32) respectively slidably disposed in the corresponding side slide rails (31), a pair of mounting plates (33) respectively vertically fixed on the outer side of the corresponding side first electric sliders (32), a guide rail (34) horizontally fixed between the two mounting plates (33) and located above the worktable (1), a second electric slider (35) slidably disposed on the guide rail (34), an electric push rod (36) vertically fixed on the lower surface of the second electric slider (35), and a laser cutting head (37) fixed on the lower surface of the electric push rod (36).

4. The laser cutting device for producing engineering plastic PC sheets according to claim 1, characterized in that: The workbench (1) has a cavity (11) inside, and a plurality of suction ports (12) communicating with the cavity (11) are spaced apart on the upper surface of the workbench (1); the fixing mechanism (2) includes a collection box (21) located on one side of the workbench (1), a suction pipe (22) with one end communicating with the collection box (21) and the other end passing through the workbench (1) and communicating with the cavity (11), and a suction pump (23) communicating with the suction pipe (22).

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