Emergency protection device for numerical control manufacturing

Abstract

The invention discloses an emergency protection device for numerical control manufacturing. The emergency protection device comprises a base, a shell is fixedly connected to the upper surface of the base, a sliding plate door is slidably connected to the outer surface of the shell, a fixing device is arranged on the inner surface of the shell, and a cutter moving device is arranged on the inner bottom face of the shell; a sliding groove is formed in the shell, a sliding block is fixedly connected to the outer surface of the sliding plate door, the sliding plate door and the sliding block are both of a hollow structure, a clamping groove is formed in the shell, a baffle is fixedly connected to the inner surface of the clamping groove, a traction steel cable is slidably connected to the sliding block, and a rotating shaft is rotatably connected to the outer surface of the sliding block. Under the condition that a cutter is collided, a workpiece is collided to fly and strikes a movable plate to reach a preset threshold value, then a pressure sensor controls an electromagnet to be powered off, a tension plate pulls a holding block under the action of an ejection spring, the holding block and a baffle are in a locked state, friction force is increased, and therefore the safety of workers is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of emergency protection, and particularly relates to an emergency protection device for numerical control manufacturing. Background Art

[0002] A numerically controlled machine tool, abbreviated as a CNC machine tool, is an automated machine tool equipped with a program control system. This control system can logically process a program with control codes or other symbolic instructions, decode it, represent it in coded numbers, and input it into the numerical control device through an information carrier. After arithmetic processing, various control signals are sent out by the numerical control device to control the actions of the machine tool, and the parts are automatically processed according to the shape and size required by the drawing.

[0003] An existing emergency protection device for numerical control manufacturing locks the sliding door by using the self-locking function of the numerical control equipment. However, in this way, during use, in the case of a tool collision, it may cause the sliding door to be insecurely connected, thus posing a safety hazard. Summary of the Invention

[0004] The purpose of the present invention is to solve at least one of the technical problems existing in the prior art, and provide an emergency protection device for numerical control manufacturing. Through a pressure sensor, a movable plate, a traction steel cable, a clamping block, a top-positioning telescopic rod, a top-positioning spring, a tension plate, and an electromagnet, in the case of a tool collision, the workpiece is knocked flying and hits the movable plate, reaching a preset threshold. Then, the pressure sensor controls the electromagnet to cut off the power. Under the action of the top-positioning spring, the tension plate pulls the clamping block, so that the clamping block and the baffle are in a locked state, increasing the friction force, thereby ensuring the safety of the staff.

[0005] The present invention also provides an emergency protection device for numerical control manufacturing having the above-mentioned one, including: a base, the upper surface of the base is fixedly connected with a housing, the outer surface of the housing is slidably connected with a sliding door, the inner surface of the housing is provided with a fixing device, and the inner bottom surface of the housing is provided with a tool moving device; a chute is provided on the housing, a slider is fixedly connected to the outer surface of the sliding door, both the sliding door and the slider are hollow structures, a clamping groove is provided on the housing, a baffle is fixedly connected to the inner surface of the clamping groove, a traction steel cable is slidably connected to the slider, a rotating shaft is rotatably connected to the outer surface of the slider, a clamping block is fixedly connected to the outer surface of the rotating shaft, the clamping block is movably connected with the baffle, a reset device is provided on the clamping block, and the traction steel cable is fixedly connected with the clamping block; a pulley one and a pulley two are provided on the sliding door, the pulley two is located inside the sliding door, the pulley one is located on the outer surface of the sliding door, the traction steel cable is in contact with the pulley one and the pulley two, a top-positioning telescopic rod and a top-positioning spring are fixedly connected to the outer surface of the sliding door, a tension plate is fixedly connected to the ends of the top-positioning telescopic rod and the top-positioning spring away from the sliding door, an electromagnet is fixedly connected to the outer surface of the sliding door, an iron block is fixedly connected to the lower surface of the tension plate, a pressure sensor is fixedly connected to the inner surface of the sliding door, and an output end of the pressure sensor is fixedly connected with a movable plate.

[0006] According to an emergency protection device for numerical control manufacturing provided by the present invention, a viewing window is provided on the sliding door, and the material of the viewing window is tempered glass.

[0007] According to an emergency protection device for numerical control manufacturing provided by the present invention, the fixing device includes: a driving motor and a triangular clamp, the driving motor is fixedly connected inside the housing, and an output end of the driving motor is fixedly connected with the triangular clamp.

[0008] According to an emergency protection device for numerical control manufacturing provided by the present invention, a guide rail is fixedly connected to the inner bottom surface of the housing.

[0009] According to an emergency protection device for numerical control manufacturing provided by the present invention, the reset device includes: a reset telescopic rod, a reset spring, and a top plate, the reset telescopic rod and the reset spring are both fixedly connected to the outer surface of the clamping block, and the ends of the reset telescopic rod and the reset spring away from the clamping block are fixedly connected with the top plate.

[0010] According to an emergency protection device for numerical control manufacturing provided by the present invention, a clamping block is fixedly connected to the outer surface of the clamping block, and the clamping block is movably connected with the baffle.

[0011] According to an emergency protection device for numerical control manufacturing provided by the present invention, the tool moving device includes: an electric slider and a tool, the electric slider is slidably connected to the upper surface of the guide rail, and the tool is fixedly connected to the upper surface of the electric slider.

[0012] An emergency protection device for numerical control manufacturing provided by the present invention, wherein a control panel is arranged on the outer surface of the housing, and the control panel is electrically connected to a tool moving device and a fixing device.

[0013] Compared with the prior art, in the emergency protection device for numerical control manufacturing, through the pressure sensor, the movable plate, the traction steel cable, the clamping block, the top-positioning telescopic rod, the top-positioning spring, the tension plate, and the electromagnet, in the case of tool collision, the workpiece is knocked flying and hits the movable plate, reaching a preset threshold value, and then the pressure sensor controls the electromagnet to cut off the power. Under the action of the top-positioning spring, the tension plate pulls the clamping block, so that the clamping block and the baffle are in a locked state, increasing the friction force, thereby ensuring the safety of the staff. Description of the Drawings

[0014] The present invention will be further described below in conjunction with the drawings and embodiments;

[0015] Figure 1 It is the overall structure diagram of the emergency protection device for numerical control manufacturing of the present invention;

[0016] Figure 2 It is the sectional structure diagram of the emergency protection device for numerical control manufacturing of the present invention;

[0017] Figure 3 It is the sectional top view structure diagram of the emergency protection device for numerical control manufacturing of the present invention;

[0018] Figure 4 It is of the emergency protection device for numerical control manufacturing of the present invention Figure 2 The enlarged view at position C;

[0019] Figure 5 It is of the emergency protection device for numerical control manufacturing of the present invention Figure 1 The enlarged view at position G;

[0020] Figure 6 It is of the emergency protection device for numerical control manufacturing of the present invention Figure 2 The enlarged view at position D;

[0021] Figure 7 It is of the emergency protection device for numerical control manufacturing of the present invention Figure 8 The enlarged view at position F;

[0022] Figure 8 It is the overall diagram of the locking structure of the emergency protection device for numerical control manufacturing of the present invention;

[0023] Figure 9 It is the sectional left view structure diagram of the emergency protection device for numerical control manufacturing of the present invention.

[0024] Legend Explanation:

[0025] 1. Base; 2. Outer shell; 3. Sliding door; 4. Window; 5. Control panel; 6. Guide rail; 7. Triangular fixture; 8. Electric slider; 9. Tool; 10. Top telescopic rod; 11. Top spring; 12. Pulley 1; 13. Tension cable; 14. Tension plate; 15. Iron block; 16. Electromagnet; 17. Slide groove; 18. Slide block; 19. Card slot; 20. Baffle; 21. Rotating shaft; 22. Clamping block; 23. Locking block; 24. Reset telescopic rod; 25. Reset spring; 26. Top plate; 27. Pulley 2; 28. Pressure sensor; 29. Movable plate. Detailed implementation manners

[0026] This part will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The function of the drawings is to supplement the description in the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be construed as a limitation on the protection scope of the present invention.

[0027] Referring to Figure 1 , Figure 3 , Figure 9 , an emergency protection device for numerical control manufacturing according to an embodiment of the present invention includes: a base 1, an outer shell 2 is fixedly connected to the upper surface of the base 1, a sliding door 3 is slidably connected to the outer surface of the outer shell 2, a fixing device is provided on the inner surface of the outer shell 2, and the fixing device includes: a driving motor (not shown in the figure), a triangular fixture 7. The driving motor is fixedly connected inside the outer shell 2, and the output end of the driving motor is fixedly connected to the triangular fixture 7. A tool moving device is provided on the inner bottom surface of the outer shell 2, and the tool moving device includes: an electric slider 8, a tool 9. The electric slider 8 is slidably connected to the upper surface of the guide rail 6, and the tool 9 is fixedly connected to the upper surface of the electric slider 8. A window 4 is provided on the sliding door 3, and the material of the window 4 is tempered glass. A guide rail 6 is fixedly connected to the inner bottom surface of the outer shell 2, and a control panel 5 is provided on the outer surface of the outer shell 2. The control panel 5 is electrically connected to the tool moving device and the fixing device;

[0028] Specifically, PLC control data exists in the control panel 5 to control the driving motor and the electric slider 8. The triangular fixture 7 fixes the workpiece, the driving motor drives the triangular fixture 7, and through the set control program, the electric slider 8 is controlled to move, thereby completing the work.

[0029] A chute 17 is provided on the outer shell 2. A slider 18 is fixedly connected to the outer surface of the sliding door 3. Both the sliding door 3 and the slider 18 are of hollow structure. A clamping groove 19 is provided on the outer shell 2. A baffle 20 is fixedly connected to the inner surface of the clamping groove 19. A traction cable 13 is slidably connected to the slider 18. A rotating shaft 21 is rotatably connected to the outer surface of the slider 18. A clamping block 22 is fixedly connected to the outer surface of the rotating shaft 21. The clamping block 22 is movably connected to the baffle 20. A reset device is provided on the clamping block 22. The reset device includes: a reset telescopic rod 24, a reset spring 25, and a top plate 26. The reset telescopic rod 24 and the reset spring 25 are both fixedly connected to the outer surface of the clamping block 22. The ends of the reset telescopic rod 24 and the reset spring 25 away from the clamping block 22 are fixedly connected to the top plate 26. The traction cable 13 is fixedly connected to the clamping block 22. A latch 23 is fixedly connected to the outer surface of the clamping block 22. The latch 23 is movably connected to the baffle 20;

[0030] Specifically, the traction cable 13 is connected to the clamping block 22. The reset spring 25 provides the reset power for the clamping block 22. The chute 17 limits the slider 18. The baffle 20 is installed between the clamping groove 19 and the chute 17, and the height of the baffle 20 is less than the height of the clamping groove 19, leaving a gap therebetween to facilitate the movement of the traction cable 13. When the clamping block 22 clamps the baffle 20, the latch 23 is stuck on the upper surface of the baffle 20.

[0031] A pulley one 12 and a pulley two 27 are provided on the sliding door 3. The pulley two 27 is located inside the sliding door 3, and the pulley one 12 is located on the outer surface of the sliding door 3. The traction cable 13 is in contact with the pulley one 12 and the pulley two 27. A top position telescopic rod 10 and a top position spring 11 are fixedly connected to the outer surface of the sliding door 3. A tension plate 14 is fixedly connected to the ends of the top position telescopic rod 10 and the top position spring 11 away from the sliding door 3. An electromagnet 16 is fixedly connected to the outer surface of the sliding door 3. An iron block 15 is fixedly connected to the lower surface of the tension plate 14. A pressure sensor 28 is fixedly connected to the inner surface of the sliding door 3. The output end of the pressure sensor 28 is fixedly connected to a movable plate 29;

[0032] Specifically, the pulley changes the direction of the traction cable and reduces the friction, facilitating the sliding of the traction cable 13. A threshold value is set on the pressure sensor 28. When the workpiece is knocked flying and hits the movable plate 29, the movable plate 29 is slidably connected to the sliding plate door 3. When the impact force exceeds the threshold value, the electromagnet 16 is powered off for 1 - 3 s. At this time, the tension plate 14 immediately springs open under the action of the top-position spring 11. The tension plate 14 drives the traction cable 13, thereby driving the clamping block 22. The clamping block 22 is completely attached to the baffle 20. The movable plate 29 bears the impact, thus protecting the pressure sensor. The detection ends of the pressure sensor 28 are evenly distributed on the movable plate 29. When resetting is required, press the tension plate 14 to make the iron block 15 fit with the electromagnet 16. At this time, under the action of the reset device, the clamping block 22 automatically resets. The top-position spring 11 can be a spring with a relatively large spring constant, thereby shortening the reaction time. The threshold range of the pressure sensor 28 is dynamically adjusted according to the rotational speed of the tool 9, and the adjustment formula is F = 0.02v² + 5, where F is the threshold value and v is the rotational speed.

[0033] Working principle: The triangular fixture 7 fixes the workpiece. The drive motor drives the triangular fixture 7. Through the set control program, the electric slider 8 is controlled to move, thereby completing the work. When a tool collision occurs, the workpiece is knocked flying and hits the movable plate 29. The movable plate 29 is slidably connected to the sliding plate door 3. When the impact force exceeds the threshold value, the electromagnet 16 is powered off for 1 - 3 s. At this time, the tension plate 14 immediately springs open under the action of the top-position spring 11. The tension plate 14 drives the traction cable 13, thereby driving the clamping block 22. The clamping block 22 is completely attached to the baffle 20.

[0034] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art in the said technical field, various changes can be made without departing from the gist of the present invention.

Claims

1. An emergency protection device for numerical control manufacturing, characterized in that: include: A base (1), the upper surface of the base (1) being fixedly connected to a housing (2), the outer surface of the housing (2) being slidably connected to a slide door (3), the inner surface of the housing (2) being provided with a fixing device, and the inner bottom surface of the housing (2) being provided with a tool moving device; The outer shell (2) is provided with a slide groove (17), the outer surface of the slide door (3) is fixedly connected to a slide block (18), the slide door (3) and the slide block (18) are both hollow structures, the outer shell (2) is provided with a slot (19), the inner surface of the slot (19) is fixedly connected to a baffle (20), the slide block (18) is slidably connected to a traction steel cable (13), the outer surface of the slide block (18) is rotatably connected to a rotating shaft (21), the outer surface of the rotating shaft (21) is fixedly connected to a clamping block (22), the clamping block (22) is movably connected to the baffle (20), the clamping block (22) is provided with a reset device, and the traction steel cable (13) is fixedly connected to the clamping block (22); The slide door (3) is provided with a pulley 1 (12) and a pulley 2 (27), the pulley 2 (27) being located inside the slide door (3), the pulley 1 (12) being located on the outer surface of the slide door (3), the traction steel cable (13) being in contact with the pulley 1 (12) and the pulley 2 (27), the outer surface of the slide door (3) being fixedly connected with a top telescopic rod (10) and a top spring (11), the ends of the top telescopic rod (10) and the top spring (11) away from the slide door (3) being fixedly connected with a tension plate (14), the outer surface of the slide door (3) being fixedly connected with an electromagnet (16), the lower surface of the tension plate (14) being fixedly connected with an iron block (15), the inner surface of the slide door (3) being fixedly connected with a pressure sensor (28), the output end of the pressure sensor (28) being fixedly connected with a movable plate (29), and the threshold range of the pressure sensor (28) being dynamically adjusted according to the rotation speed of the tool (9).

2. The emergency protection device for numerical control manufacturing according to claim 1, characterized in that: The slide door (3) is provided with a viewing window (4), and the viewing window (4) is made of tempered glass.

3. The emergency protection device for numerical control manufacturing according to claim 1, characterized in that: The fixing device comprises: a driving motor and a triangular clamp (7); the driving motor is fixedly connected to the inside of the housing (2); and the output end of the driving motor is fixedly connected to the triangular clamp (7).

4. The emergency protection device for numerical control manufacturing according to claim 1, characterized in that: A guide rail (6) is fixedly connected to the inner bottom surface of the outer shell (2).

5. The emergency protection device for numerical control manufacturing according to claim 1, characterized in that: The reset device comprises: a reset telescopic rod (24), a reset spring (25), and a top plate (26); the reset telescopic rod (24) and the reset spring (25) are both fixedly connected to the outer surface of the clamping block (22); and one end of the reset telescopic rod (24) and the reset spring (25) away from the clamping block (22) is fixedly connected to the top plate (26).

6. The emergency protection device for numerical control manufacturing according to claim 1, characterized in that: A clamping block (23) is fixedly connected to the outer surface of the clamping block (22), and the clamping block (23) is movably connected to the baffle (20).

7. The emergency protection device for numerical control manufacturing according to claim 1, characterized in that: The tool moving device comprises: an electric slider (8) and a tool (9), wherein the electric slider (8) is slidably connected to the upper surface of the guide rail (6), and the tool (9) is fixedly connected to the upper surface of the electric slider (8).

8. The emergency protection device for numerical control manufacturing according to claim 1, characterized in that: A control panel (5) is provided on the outer surface of the housing (2), and the control panel (5) is electrically connected to the tool moving device and the fixing device.

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