Punch chip removal mechanism

Abstract

The utility model discloses a punch chip removal mechanism, it includes: punch pressure plate, it is equipped with bearing, punch main shaft, it passes through punch pressure plate and is fixedly connected with bearing inner hole, and punch main shaft is equipped with the chip removal passage that goes through upper and lower end, punch, it is equipped with the chip removal suction hole that goes through upper and lower end and communicates with chip removal passage, and punch is installed in punch main shaft lower end through nut, shaft sleeve, it is fixedly covered in the periphery of punch main shaft, and still be equipped with a circle drive tooth on shaft sleeve upper end periphery, suction device, through pipeline connection punch main shaft upper end, and communicate with chip removal passage. The utility model discloses when working, the suction of suction device produces suction, and through pipeline, the chip removal passage of punch main shaft, the chip removal suction hole of punch suction the chip that produces when punch punch, it can reach the purpose of suction / removal waste chip, and it need not through adding other structures to absorb waste material, make overall structure extremely simple, can satisfy small space installation demand, also reduce cost, reduce the degree of installation complicated degree.

Description

Technical fields:

[0001] This utility model relates to the field of cutting machine technology, and specifically to a punch chip removal mechanism for a cutting machine. Background technology:

[0002] Chinese utility model patent application number 202121767751.8 discloses a novel CNC drilling machine, including a base and a frame disposed on one side of the base. A cylinder is disposed on the top of the frame, and the piston rod of the cylinder passes through the top of the frame and is fixedly connected to a motor housing. A motor is installed inside the motor housing, and the output shaft of the motor vertically downward passes through the bottom end of the motor housing, with a punch installed at its end. A worktable is disposed on the base below the punch. A cover is movably sleeved on the piston rod of the cylinder, and the motor housing is located inside the cover. An opening is provided at the lower end of the cover, and a chip discharge port is provided on the side wall of the cover. The chip discharge port is connected to the air inlet of an exhaust fan located on the base via a flexible hose, and the air outlet of the exhaust fan is connected to a chip collection box. The above-mentioned CNC drilling machine can effectively clean up waste chips and dust during the drilling process, ensuring smooth production and effectively avoiding dust pollution in the surrounding environment.

[0003] The aforementioned CNC drilling machine has the following shortcomings: First, the CNC drilling machine uses a cover in conjunction with a fan, hose, and chip collection box to clean up waste chips and dust during the drilling process. However, the cover is located outside the motor housing and punch, making it bulky and space-consuming. It cannot meet the installation requirements of small spaces. At the same time, adding a cover increases costs and installation complexity. Second, when the cover is sucking up waste chips and dust, since the motor housing and punch are located inside the cover, waste chips and dust will accumulate in the gaps between the motor housing, punch, motor output shaft, and the bottom of the motor housing. This will affect the working quality of the motor and punch, and thus the drilling quality. Users need to frequently clean the waste chips and dust accumulated in the gaps between the motor housing, punch, motor output shaft, and the bottom of the motor housing, which is extremely inconvenient and causes significant trouble for users.

[0004] In view of the above, the inventors propose the following technical solution. Utility Model Content:

[0005] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a punch chip removal mechanism.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: The punch chip removal mechanism includes: a punch pressure plate, on which a bearing is provided; a punching spindle, which passes through the punch pressure plate and is fixedly connected to the inner hole of the bearing, and can rotate relative to the punch pressure plate, and the punching spindle is provided with a chip removal channel that runs through the upper and lower ends; a punch, which is provided with a chip removal suction hole that runs through the upper and lower ends and communicates with the chip removal channel, and the punch is installed on the lower end of the punching spindle by a nut; a bushing, which is fixedly sleeved on the periphery of the punching spindle, and a ring of driving teeth is also provided on the outer periphery of the upper end of the bushing; and an air suction device, which is connected to the upper end of the punching spindle through a pipe and communicates with the chip removal channel.

[0007] Furthermore, in the above technical solution, the lower periphery of the punching spindle is provided with several vent holes that penetrate the chip removal channel, an annular cavity is formed between the inner wall of the lower end of the nut and the lower periphery of the punching spindle, and the outer side of the nut is provided with several air inlets that penetrate the annular cavity, and the outer side of the upper end of the punch is provided with several air inlets that penetrate the chip removal suction holes and correspond to the vent holes; the air inlets, annular cavity, vent holes, air inlets, and chip removal suction holes are connected in sequence to form a secondary air intake channel.

[0008] Furthermore, in the above technical solution, the lower end of the punching spindle is provided with a threaded section and a chuck section located at the lower end of the threaded section. The upper end of the punch is embedded in the stepped groove in the chuck section and is clamped and positioned by the chuck section. The nut passes through the chuck section and is screwed and fixed to the threaded section. The nut generates a tightening force from the outside to the inside on the chuck section to drive the chuck section to tighten, thereby locking the punch and the chuck section.

[0009] Furthermore, in the above technical solution, the chuck section has several slits opened upwards along its lower end to form several mutually spaced and elastically deformable petal-shaped bodies, the lower end of which is provided with a stepped surface; the lower end of the nut also covers the stepped surface at the lower end of the chuck section to tighten the chuck section from the outside to the inside, thereby locking the punch and the chuck section.

[0010] Furthermore, in the above technical solution, the stepped surface is an outer inclined surface, and an inner inclined surface is provided on the inner side of the lower end of the nut, and the inner inclined surface and the outer inclined surface are in abutting contact.

[0011] Furthermore, in the above technical solution, the vent is located at the upper end of the crack and communicates with the crack, and the vent also penetrates the stepped groove.

[0012] Furthermore, in the above technical solution, the nut is cylindrical, and its exterior is provided with two corresponding flat-bottomed recesses.

[0013] Furthermore, in the above technical solution, the chip suction hole includes three sections connected sequentially from top to bottom, namely a first circular hole, a second circular hole, and a third circular hole, with the inner diameter gradually decreasing. The inner diameter of the first circular hole is smaller than the inner diameter of the chip discharge channel.

[0014] Furthermore, in the above technical solution, the suction device includes a suction box, a waste collection box installed at the lower end of the suction box and communicating with the suction box, and a solenoid valve connected to the suction box through a first air pipe. The solenoid valve is connected to a vacuum generator through a second air pipe, and the suction box is connected to the pipe.

[0015] Furthermore, in the above technical solution, there are two punch pressure plates, two punching spindles, two punches, and two bushings, which are arranged side by side, and the drive teeth on the outside of the two bushings are connected by a toothed belt, which is connected to a drive gear.

[0016] After adopting the above technical solution, this utility model has the following beneficial effects compared with the prior art: When this utility model is working, the suction device generates suction force, and the debris generated during punching is sucked up through the pipe, the chip removal channel of the punching spindle, and the chip removal suction hole of the punch. It can achieve the purpose of sucking / removing waste chips. It does not require the addition of other structures (such as a cover) to suck up waste materials, making the overall structure extremely simple, and it does not increase the volume or occupy space, which can meet the installation requirements of small spaces. At the same time, it can also reduce the cost of adding other structures (such as a cover) and reduce the complexity of installation. Furthermore, after the punch generates debris, it is immediately sucked away by the chip removal suction hole of the punch and then sucked away by the suction device through the chip removal channel and pipe of the punching spindle. This prevents the debris from accumulating in other mechanisms / parts and affecting their operation. It also saves the time of frequent manual cleaning of waste chips, making it extremely convenient to use and providing a guarantee for the quality of punching in the later stage, giving this utility model a strong market competitiveness. Attached image description:

[0017] Figure 1 This is a perspective view of the present invention;

[0018] Figure 2 This is a partial perspective view of the present invention;

[0019] Figure 3 This is a perspective view of a portion of this utility model from another angle;

[0020] Figure 4 This is a partial sectional view of the present invention;

[0021] Figure 5 This is a partial perspective view of the punching spindle in this utility model;

[0022] Figure 6This is a perspective view of the nut in this utility model;

[0023] Figure 7 This is a perspective view of the punch in this utility model. Detailed implementation method:

[0024] The present invention will be further described below with reference to specific embodiments and accompanying drawings.

[0025] See Figure 1-7 The image shows a punch chip removal mechanism used in a cutting machine. This cutting machine can cut various materials such as cloth, paper, and sheet, which can greatly improve the processing accuracy and production efficiency of materials.

[0026] The present invention relates to a punch chip removal mechanism, which includes: a punch pressure plate 1, a punching spindle 2, a punch 3, a nut 4, a bushing 5, and an air suction device 6.

[0027] The punch plate 1 is equipped with a bearing 11; the punching spindle 2 passes through the punch plate 1 and is fixedly connected to the inner hole of the bearing 11, and can rotate relative to the punch plate 1. The punching spindle 2 is provided with a chip removal channel 21 that runs through the upper and lower ends; the punch 3 is provided with a chip removal suction hole 31 that runs through the upper and lower ends and communicates with the chip removal channel. The punch 3 is installed on the lower end of the punching spindle 2 by a nut 4; the bushing 5 is fixedly sleeved on the periphery of the punching spindle 2, and a ring of drive teeth 51 is provided on the upper periphery of the bushing 5. The bushing 5 is connected to the rotating device through the drive teeth 51, and the rotating device drives the bushing 5, the punching spindle 2, and the punch 3 to rotate, so that when the punch 3 contacts various materials such as cloth, paper, and board downwards, the punching purpose is achieved; the suction device 6 is connected to the upper end of the punching spindle 2 through a pipe 60 and communicates with the chip removal channel 21, and generates suction force on the chip removal channel 21. When this invention is in operation, the suction device 6 generates suction, which is used to extract the debris generated during punching by the punch 3 through the pipe 60, the chip removal channel 21 of the punching spindle 2, and the chip removal suction hole 31 of the punch 3. This achieves the purpose of suction / removal of waste materials without the need for additional structures (such as covers), making the overall structure extremely simple and not increasing the volume or space occupied, meeting the installation requirements of small spaces. It also reduces the cost of adding other structures (such as covers) and simplifies the installation process. Furthermore, after the punch 3 generates debris, it is immediately sucked away by the chip removal suction hole 31 of the punch 3 and then by the suction device 6 through the chip removal channel 21 and pipe 60. This prevents the debris from accumulating in other mechanisms / parts and affecting their operation, while also saving time on frequent manual cleaning of waste materials. It is extremely convenient to use and provides a guarantee for the subsequent punching quality of the punch 3, giving this invention a strong market competitiveness.

[0028] To prevent the debris generated by the punch 3 from clogging the chip removal suction hole 31 of the punch 3 and thus hindering the chip removal function, the present invention also makes the following design: the lower periphery of the punching spindle 2 is provided with several vent holes 22 that penetrate the chip removal channel 21; an annular cavity 40 is formed between the lower inner wall of the nut 4 and the lower periphery of the punching spindle 2; and the outer side of the nut 4 is provided with several air inlets 41 that penetrate the annular cavity 40; the outer side of the upper end of the punch 3 is provided with several air openings 32 that penetrate the chip removal suction hole 31 and correspond to the vent holes 22; the air inlets 41, the annular cavity 40, the vent holes 22, the air openings 32, and the chip removal suction holes 31 are connected in sequence to form a secondary air intake channel. In other words, when the debris generated by the punch 3 blocks the chip removal suction hole 31 of the punch 3, thus hindering the chip removal function, the suction force generated by the suction device 6 can draw air through the aforementioned auxiliary suction inlet channel. This prevents the suction device 6 from malfunctioning due to obstruction. Furthermore, at this time, due to the influence of the auxiliary suction inlet channel, the suction force of the chip removal suction hole 31 of the punch 3 rapidly decreases, thereby forcing the debris inside the chip removal suction hole 31 of the punch 3 to loosen and form a gap with the chip removal suction hole 31. At this point, the suction force of the chip removal suction hole 31 of the punch 3 begins to increase again. This allows the debris in the chip suction hole 31 of the punch 3 to be sucked into the chip removal channel 21 of the punching spindle 2. Alternatively, even if the debris blocked in the chip suction hole 31 of the punch 3 cannot be sucked away immediately, it will be pushed by the new debris generated by the punch 3 in the next punching operation, causing the old debris to move and form a gap with the chip suction hole 31 of the punch 3. At this time, the suction force of the chip suction hole 31 of the punch 3 will increase again, thereby sucking the debris in the chip suction hole 31 of the punch 3 into the chip removal channel 21 of the punching spindle 2. Finally, the debris in the chip suction hole 31 of the punch 3 can also be sucked away, avoiding the need to stop the machine to clean the debris blocked in the chip suction hole 31 of the punch 3, and ensuring the punching efficiency of the punch 3.

[0029] The following describes the specific structure and assembly structure of the punching spindle 2.

[0030] The lower end of the punching spindle 2 is provided with a threaded section 23 and a chuck section 24 located at the lower end of the threaded section 23. The upper end of the punch 3 is embedded in the stepped groove 241 in the chuck section 24 and is clamped and positioned by the chuck section 24. The nut 4 passes through the chuck section 24 and is screwed and fixed to the threaded section 23. The nut 4 generates a tightening force from the outside to the inside of the chuck section 24 to drive the chuck section 24 to tighten, thereby locking the punch 3 and the chuck section 24. Its assembly structure is extremely stable, so that the punch 3 is firmly installed at the lower end of the punching spindle 2.

[0031] Specifically, the chuck section 24 has several slits 242 opening upwards along its lower end to form several mutually spaced and elastically deformable petal-shaped bodies. The lower end of the petal-shaped body is provided with a stepped surface 243. The lower end of the nut 4 also covers the stepped surface 243 at the lower end of the chuck section 24 to tighten the chuck section 24 from the outside to the inside, thereby locking the punch 3 to the chuck section 24 and thus making the punch 3 stably installed on the lower end of the punching spindle 2.

[0032] The stepped surface 243 is an outer inclined surface, and an inner inclined surface 401 is provided on the inner side of the lower end of the nut 4. The inner inclined surface and the outer inclined surface are in abutting contact. When the nut 4 is continuously tightened, the inner inclined surface 401 and the outer inclined surface of the nut 4 are in abutting contact, thereby achieving the purpose of tightening the petal-shaped body from the outside to the inside and achieving the purpose of locking.

[0033] The ventilation hole 22 is located at the upper end of the crack 242 and communicates with the crack 242. The ventilation hole 22 also passes through the stepped groove 241.

[0034] The nut 4 is cylindrical, with two corresponding flat-bottomed recesses 42 on its outside, which facilitates the tool to clamp and fix the nut 4, thereby driving the nut 4 to rotate relative to the punching spindle 2, which helps to reduce the "stripping" phenomenon.

[0035] The chip removal suction hole 31 includes three sections connected from top to bottom, with the inner diameters of the first circular hole 311, the second circular hole 312, and the third circular hole 313 gradually decreasing. The inner diameter of the first circular hole 311 is smaller than the inner diameter of the chip removal channel 21, which enables the third circular hole 313 at the bottom of the chip removal suction hole 31 to form a greater suction force. After the chips are sucked in, they can quickly enter the larger second circular hole 312, and then smoothly enter the first circular hole 311, the chip removal channel 21, etc., to achieve a smoother and more efficient chip removal function.

[0036] The suction device 6 includes a suction box 61, a waste collection box 62 installed at the lower end of the suction box 61 and communicating with the suction box 61, and a solenoid valve 64 connected to the suction box 61 through a first air pipe 63. The solenoid valve 64 is connected to a vacuum generator through a second air pipe, and the suction box 61 is connected to the pipe 60. The vacuum generator evacuates air from the suction box 61 through the solenoid valve 64, and the suction box 61 sucks in debris through the pipe 60. The debris then enters the waste collection box 62, achieving the purpose of debris removal. Alternatively, the suction device 6 includes a vacuum generator and a waste collection box. The vacuum generator is connected to the pipe 60 and the waste collection box. The vacuum generator sucks in debris through the pipe 60, and the debris then enters the waste collection box 62, achieving the purpose of debris removal.

[0037] The punch plate 1, punching spindle 2, punch 3, and bushing 5 are all in pairs and are arranged side by side. The drive teeth 51 on the outside of the two bushings 5 ​​are connected by a toothed belt 52, which is connected to a drive gear. That is, the drive teeth 51 on the outside of the two bushings 5 ​​share a rotating device, which makes the structure more compact and the cost lower.

[0038] In summary, when this utility model is in operation, the suction device 6 generates suction, and the debris generated during punching by the punch 3 is sucked up through the pipe 60, the chip removal channel 21 of the punching spindle 2, and the chip removal suction hole 31 of the punch 3. It can achieve the purpose of sucking / removing waste chips. It does not require the addition of other structures (such as a cover) to suck up waste materials, making the overall structure extremely simple, and it does not increase the volume or occupy space, which can meet the installation requirements of small spaces. At the same time, it can also reduce the cost of adding other structures (such as a cover) and reduce the complexity of installation. Furthermore, after the punch 3 generates debris, it is immediately sucked away by the chip removal suction hole 31 of the punch 3, and then sucked away by the suction device 6 through the chip removal channel 21 of the punching spindle 2 and the pipe 60. This prevents the debris from accumulating at the location of other mechanisms / parts and affecting the operation of other mechanisms / parts. It also saves the time of frequent manual cleaning of waste chips. It is extremely convenient to use and provides a guarantee for the punching quality of the punch 3 in the later stage, making this utility model highly competitive in the market.

[0039] Of course, the above description is only a specific embodiment of the present utility model and is not intended to limit the scope of the present utility model. All equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model should be included in the scope of the claims of the present utility model.

Claims

1. A punch chip removal mechanism, characterized in that: It includes: Punch plate (1), on which a bearing (11) is provided; The punching spindle (2) passes through the punch pressure plate (1) and is fixedly connected to the inner hole of the bearing (11). It can rotate relative to the punch pressure plate (1), and the punching spindle (2) is provided with a chip removal channel (21) that runs through the upper and lower ends. The punch (3) is provided with a chip suction hole (31) that runs through the upper and lower ends and communicates with the chip removal channel. The punch (3) is installed on the lower end of the punching spindle (2) by a nut (4). The bushing (5) is fixedly sleeved on the periphery of the punching spindle (2), and a ring of drive teeth (51) is also provided on the upper periphery of the bushing (5). The suction device (6) is connected to the upper end of the punching spindle (2) through the pipe (60) and is connected to the chip removal channel (21); The lower periphery of the punching spindle (2) is provided with several ventilation holes (22) that pass through the chip removal channel (21). An annular cavity (40) is formed between the lower inner wall of the nut (4) and the lower periphery of the punching spindle (2). The nut (4) is provided with several air inlets (41) that pass through the annular cavity (40). The upper outer side of the punch (3) is provided with several chip removal suction holes (31) that pass through the chip removal holes and ventilation openings (32) that correspond to the ventilation holes (22). The air inlets (41), annular cavity (40), ventilation holes (22), ventilation openings (32), and chip removal suction holes (31) are connected in sequence to form a secondary air intake channel.

2. The punch chip removal mechanism according to claim 1, characterized in that: The lower end of the punching spindle (2) is provided with a threaded section (23) and a chuck section (24) located at the lower end of the threaded section (23). The upper end of the punch (3) is embedded in the stepped groove (241) in the chuck section (24) and is clamped and positioned by the chuck section (24). The nut (4) passes through the chuck section (24) and is screwed and fixed to the threaded section (23). The nut (4) generates a tightening force from the outside to the inside on the chuck section (24) to drive the chuck section (24) to tighten, so as to lock the punch (3) and the chuck section (24).

3. The punch chip removal mechanism according to claim 2, characterized in that: The chuck section (24) has several slits (242) opening upward along its lower end to form several mutually spaced and elastically deformable petal-shaped bodies. The lower end of the petal-shaped body is provided with a stepped surface (243). The lower end of the nut (4) also covers the stepped surface (243) at the lower end of the chuck section (24) to tighten the chuck section (24) from the outside to the inside, so as to lock the punch (3) and the chuck section (24).

4. The punch chip removal mechanism according to claim 3, characterized in that: The step surface (243) is an outer inclined surface, and an inner inclined surface (401) is provided on the inner side of the lower end of the nut (4), and the inner inclined surface (401) is in contact with the outer inclined surface.

5. The punch chip removal mechanism according to claim 4, characterized in that: The ventilation hole (22) is located at the upper end of the crack (242) and communicates with the crack (242), and the ventilation hole (22) also penetrates the stepped groove (241).

6. The punch chip removal mechanism according to any one of claims 1-5, characterized in that: The nut (4) is cylindrical and has two corresponding flat-bottomed recesses (42) on its outside.

7. The punch chip removal mechanism according to any one of claims 1-5, characterized in that: The chip suction hole (31) includes three sections connected from top to bottom, with the inner diameter gradually decreasing: a first circular hole (311), a second circular hole (312), and a third circular hole (313). The inner diameter of the first circular hole (311) is smaller than the inner diameter of the chip discharge channel (21).

8. The punch chip removal mechanism according to any one of claims 1-5, characterized in that: The suction device (6) includes a suction box (61), a waste collection box (62) installed at the lower end of the suction box (61) and connected to the suction box (61), and a solenoid valve (64) connected to the suction box (61) through a first air pipe (63). The solenoid valve (64) is connected to a vacuum generator through a second air pipe. The suction box (61) is connected to the pipe (60).

9. The punch chip removal mechanism according to any one of claims 1-5, characterized in that: The punch pressure plate (1), punching spindle (2), punch (3), and bushing (5) are all in pairs, arranged side by side, and the drive teeth (51) on the outside of the two bushings (5) are connected by a toothed belt (52), which is connected to the drive gear.

Images