Machining apparatus for a circular saw guard and method of machining

Abstract

The application discloses a machining equipment of a disc saw protective cover and a machining method thereof. The equipment comprises a turnover frame, conveying rollers, an inner pressing wheel, a driving device, machining devices on both sides and the like. The turnover frame is used for placing a plurality of protective covers to be machined, the protective covers are placed in a way that the arc surfaces face downwards and the straight edges face upwards. The conveying rollers are used for driving the turnover frame to move intermittently, so that one protective cover is stopped at a machining position each time. The inner pressing wheel is movable up and down, and is pressed downwards after being aligned with the protective cover, and simultaneously applies inner and outer side pressure through the double-diameter design, so that the protective cover is tightly held. The driving device drives the protective cover to be separated from the turnover frame and to be rotated through a power friction wheel, so that each machining surface is gradually exposed. The machining devices on both sides machine predetermined threaded hole positions of the protective cover when the protective cover is rotated. After the machining is completed, the driving device works reversely, the protective cover is turned back into the turnover frame, the inner pressing wheel is lifted, the turnover frame is circulated to a next working position, and the machining of the next protective cover is started.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of machining equipment, in particular to a machining equipment for a disc saw protective cover and a machining method thereof. BACKGROUND

[0002] A disc saw is a kind of electric power tool widely used for cutting wood, metal and other materials. It is divided into many main categories according to the purpose and characteristics, including woodworking disc saw, metal disc saw and bevel disc saw. In addition, according to the different structural forms, disc saws also have different models such as handheld, table type and sliding type.

[0003] Any disc saw generally has an upper protective cover 001 for protecting the saw blade and a movable lower protective cover. The upper protective cover covers the upper half of the saw blade. Referring to the attached drawings, the overall shell structure is in the shape of a half disc, including a semicircular arc portion 01 covering the saw blade and a cylindrical portion 02 connected thereto, wherein the arc edge portion of the semicircular arc portion 01 is closed and the straight edge portion is completely open. Figure 1

[0004] In the upper protective cover, the outer surface of the arc-shaped portion on both sides is provided with a plurality of screw holes 03. Part of these screw holes is used for self-fixing and the other part is used for connecting the lower protective cover. The conventional machining method of these screw holes currently needs to make special fixtures according to the shape of the upper protective cover and is manually operated.

[0005] Manual operation has obvious disadvantages such as low efficiency, instability, high labor cost, etc. By introducing an automated production line and an intelligent fixture system, the production efficiency can be improved, the machining quality can be stabilized, and the labor cost and the risk of injury can be reduced, thereby overcoming the aforementioned disadvantages. However, the specific material and structural form of the upper protective cover cause difficulty in clamping, making it more complex to achieve automated machining. The upper protective cover is usually made of metal materials such as aluminum, and its shape is complex and irregular, which makes it impossible to be stably fixed by a conventional mechanical clamp. In addition, the upper protective cover is heavy, so the method of sucking irregular objects by a suction cup commonly used on an automated production line is also not suitable.

[0006] In addition, the machining surface of the upper protective cover may need to be reversed repeatedly during the machining process, which also brings certain difficulty to automated machining. The traditional automated fixture may not be able to flexibly respond to the machining requirements in different directions, so it is necessary to develop an intelligent fixture system that can adaptively adjust according to the specific shape of the upper protective cover and the machining requirements to achieve efficient automated machining. SUMMARY

[0007] The present application provides an automated disc saw protective cover machining equipment and method to achieve efficient and continuous machining of the protective cover, greatly improving the yield and quality. ​

[0008] The application aims to provide a machining device for a protective cover of a circular saw.

[0009] Preferably, the inner pressure wheel has a half diameter matching the inner diameter of the protective cover and a half diameter matching the outer shape of the protective cover.

[0010] Preferably, the machining device further comprises:

[0011] a main frame supporting the conveying roller;

[0012] a feeding table fixed to one side of the main frame and connected with the conveying roller;

[0013] a wall plate fixed to one side of the main frame and vertically extending upwards;

[0014] a jump plate fixed to one end of the wall plate and horizontally extending towards the center of the device;

[0015] a first linear slide frame fixed to the lower surface of the jump plate;

[0016] a fork fixed to the slide seat of the first linear slide frame and used for rotatingly mounting the inner pressure wheel;

[0017] a mounting platform fixed to the main frame and used for mounting the first machining power device and the second machining power device;

[0018] and a flow bar fixed to both sides of the conveying direction of the conveying roller.

[0019] The device has a rich structure and the arrangement of the frame, positioning components and other components is specifically described, so that the device is more stable and reliable.

[0020] Preferably, the driving device comprises:

[0021] a power friction wheel in contact with the inner pressure wheel and the outer edge of the disc combination of the protective cover;

[0022] a motor providing power for the power friction wheel;

[0023] a pulley transmission assembly transmitting power of the motor to the power friction wheel;

[0024] The second linear slide is installed with a motor, a pulley transmission assembly and a power friction wheel, and can be driven to lift or lower in the vertical direction to contact or leave the outer edge of the disc assembly.

[0025] The beneficial effect is that the composition and working principle of the driving device are described in detail, which is conducive to understanding and implementing the driving device.

[0026] As a preferred, the turnover frame has positioning holes, and the equipment has a positioning assembly matched with the positioning holes and capable of telescopic positioning. The beneficial effect is that the positioning mechanism of the turnover frame is increased, so that the position of the turnover frame is accurate during equipment operation.

[0027] As a preferred, the driving of the first linear slide and the second linear slide adopts a screw nut transmission structure. The beneficial effect is that the screw nut transmission structure is adopted, so that the movement of the slide is accurate.

[0028] As a preferred, the gap at the position of the protective cover in the turnover frame is only slightly larger than the width of the protective cover. The beneficial effect is that the gap in the turnover frame is controlled, which is conducive to the positioning of the protective cover.

[0029] As a preferred, the protective cover in the turnover frame is provided with a rotatable cylinder at the abutting position. The beneficial effect is that the rotating cylinder is provided, so that the angle of the protective cover can be adjusted.

[0030] As a preferred, the conveying roller has a self-powered driving mechanism. The beneficial effect is that the conveying roller has self-driving, so that the conveying is more reliable.

[0031] The present application also provides a machining method of the protective cover of the disc saw, comprising the following steps:

[0032] a. Placing a plurality of protective covers in the turnover frame, and placing each protective cover with the straight edge upward and the arc surface downward;

[0033] b. Driving the turnover frame into the machining equipment, and positioning one protective cover directly below the inner compression wheel;

[0034] c. Lowering the inner compression wheel as a whole, and making the small diameter part of the inner compression wheel enter the inside of the protective cover, and making the large diameter part cooperate with the outer circle of the protective cover;

[0035] d. Starting the driving device to drive the protective cover to separate from the turnover frame and rotate until the screw hole to be machined is exposed;

[0036] e. Machining the screw hole of the protective cover by the first machining device and the second machining device;

[0037] f. Reversely working the driving device to rotate the protective cover back into the turnover frame;

[0038] g.The inner pressure wheel rises, the turntable is released from positioning and flows to the next protective cover processing position.

[0039] As a preferred, the driving device includes a power friction wheel, which drives the rotation by contacting the outer circle of the protective cover. Its beneficial effect lies in the working mode of the driving device.

[0040] As a preferred, the inner pressure wheel has a double diameter, the small diameter part matches the inner diameter of the protective cover, and the large diameter part matches the outer shape. Its beneficial effect lies in the role of the double diameter design of the inner pressure wheel in the method.

[0041] As a preferred, the turntable is positioned by the positioning assembly when flowing through the machining equipment. Its beneficial effect lies in the positioning mode of the turntable.

[0042] In summary, the present application has the following advantages compared with the prior art:

[0043] 1. A plurality of protective covers are placed in the turntable, realizing automatic and continuous processing, and greatly improving the processing efficiency.

[0044] 2. The double diameter design of the inner pressure wheel can apply pressure to the inside and outside of the protective cover, tightly holding the protective cover, making the processing more accurate and reliable.

[0045] 3. The equipment structure is reasonable, the components are arranged stably, and the key components such as the driving device and the positioning device work reliably, ensuring that the equipment can process the protective cover efficiently and accurately.

[0046] 4. The processing method is reasonable, and the automatic and continuous processing flow is ensured from the setting of the protective cover loading, positioning, processing and returning steps.

[0047] 5. The equipment and method realize automatic processing of the protective cover of the circular saw, which not only improves the processing efficiency, but also improves the stability of the processing quality and reduces the labor intensity.

[0048] 6. The equipment and method can provide an efficient, accurate and automatic processing means for batch production of the protective cover of the circular saw, which has important significance for the popularization and application of the circular saw. BRIEF DESCRIPTION OF DRAWINGS

[0049] Figure 1 is a structural schematic diagram of the protective cover;

[0050] Figure 2 is a structural schematic diagram of the present application;

[0051] Figure 3 is a structural schematic diagram of the present application, which hides part of the main frame;

[0052] Figure 4is a structural schematic view of the invention from another angle partially hiding the main body frame;

[0053] Figure 5 is a structural schematic view of the invention with all components exploded;

[0054] Figure 6 is a structural schematic view of the invention with the power device hidden;

[0055] Figure 7 is Figure 5 is a partial enlarged view of A in the figure;

[0056] Figure 8 is a structural schematic view of the invention after the protective cover is rotated;

[0057] Figure 9 is a structural schematic view of the invention with the inner pressure wheel entering the protective cover;

[0058] Figure 10 is a structural schematic view of the invention after the inner pressure wheel enters the protective cover;

[0059] Figure 11 is Figure 5 is a partial enlarged view of B in the figure.

[0060] Markings in the figure: 1. Protective cover 001; 2. Turnover frame 10; 3. Conveying roller 20; 4. Inner pressure wheel 30; 5. Driving device 40; 6. First processing power device 50; 7. Second processing power device 60; 8. Main body frame 70; 9. Feeding table 80; 10. Wallboard 90; 11. Jumping board 100; 12. First linear slide 110; 13. Fork frame 120; 14. Installation platform 130; 15. Flow bar 140; 16. Power friction wheel 150; 17. Motor 151; 18. Belt wheel transmission assembly 152; 19. Second linear slide 153; 20. Cylinder 11; 21. Positioning hole 12; 22. Positioning assembly 13; 23. Semi-circular arc-shaped part 01; 24. Cylindrical part 02; 25. Screw hole 03. DETAILED DESCRIPTION

[0061] The invention is further described below in connection with the embodiments shown in all the figures:

[0062] Embodiment 1

[0063] This embodiment does not involve the lower protective cover, therefore, for the convenience of description, the upper protective cover is referred to as protective cover 001 below.

[0064] Refer to all the figures Figures 1-11A machining device for a disc saw guard, the innovation is that a specific guard carousel 10 is used, which can make each placed guard 001 open with a straight side up, an arc side down, and the arc is in rolling contact and abuts. In the device, a conveying roller 20 is provided for circulating the carousel 10, and an inner pressure wheel 30 is provided above the conveying roller 20 and can be lifted, see Figure 5 The diameter of the inner pressure wheel 30 is designed to be divided into two halves with different diameters in the radial direction, wherein the smaller diameter half has a diameter that is the same as or slightly larger than the diameter of the inner space of the guard, and the larger diameter half has a diameter that is the same as the diameter of the outer periphery of the guard. The thickness of the inner pressure wheel is designed to be less than or equal to the minimum thickness size of the inner space of the guard.

[0065] When the device is working, the carousel 10 carries the guard 001 to the position directly below the inner pressure wheel 30, and the moving position of the carousel 10 is limited to the vertical direction of the axis of the carried guard 001 coinciding with the axis of the inner pressure wheel 30, that is, when the smaller diameter half of the inner pressure wheel 30 is downward and the whole is lowered, the half can enter the inner space of the guard 001. After the smaller diameter half of the inner pressure wheel 30 completely enters the inner space of the guard 001, the larger diameter half of the inner pressure wheel 30 combines with the outer periphery of the guard 001 to form a complete disc shape. On this basis, the device is provided with a driving device 40 that can move away from and close to the combined form of the inner pressure wheel 30 and the guard 001 to provide friction driving force to it. Under the driving of the driving device 40, the cylindrical part 02 of the guard 001 rotates upward (from front to back or from back to front), and the two sides of the guard 001 gradually separate from the carousel 10 until the position of the screw hole to be machined is completely exposed. At this time, the guard 001 obtains the machining space of the screw hole.

[0066] The device is provided with a first machining power device 50 and a second machining power device 60 on both sides of the rotated guard 001. After the two power devices are machined respectively, the driving device 40 reversely drives the guard 001 to reversely rotate back to the guard 001, completes the machining of one guard 001, and sequentially completes the machining of each guard 001 in the carousel 10 in the above-mentioned manner.

[0067] More specifically, the device further comprises a main frame 70 for supporting the conveying roller 20, a feeding table 80 fixed to one side of the conveying roller 20, a wall plate 90 vertically extending upward from one end of the main frame 70, a jump plate 100 horizontally extending toward the center of the device from the other end of the wall plate 90, a first linear slide 110 fixed to the lower surface of the jump plate 100, a fork 120 for rotatably mounting the inner pressing wheel 30 fixed to the slide of the first linear slide 110, a mounting platform 130 fixed to the main frame 70 for mounting the first processing power device 50 and the second processing power device 60, and a flow bar 140 fixed to each side of the conveying roller 20 in the conveying direction, respectively. The net space of the flow bar 140 is the same as the width direction of the turnover rack.

[0068] From the perspective of realizing the function, the aforementioned driving device 40 can be placed in multiple positions, and is not limited to the position directly below the conveying roller 20 shown in the figure, as long as it can contact and drive the protective cover 001 to rotate.

[0069] As a preferred embodiment, the conveying roller 20 itself is provided with a power driving source to independently transport the incoming turnover rack 10. A pressing cylinder is arranged on each side of the inner pressing wheel 30 to clamp the workpiece after the protective cover 001 rotates to the processing area, so as to further ensure the stability of the workpiece during processing.

[0070] The driving device 40 is arranged directly below the inflow turnover rack and corresponds to the position of the inner pressing wheel in the embodiment, and the structure comprises: a power friction wheel 150 in frictional contact with the outer circumferential surface of the disc-shaped combination of the inner pressing wheel and the protective cover, a motor 151 and a pulley transmission assembly 152 for providing power to the power friction wheel 150, and a second linear slide 153 for lifting the motor 151 and the pulley transmission assembly 152 of the power friction wheel 150.

[0071] As a preferred embodiment, the first linear slide 110 and the second linear slide 153 are driven by a motor through a screw-nut transmission.

[0072] In order to make the protective cover 001 more easily and accurately enter the turnover rack 10 and more smoothly roll around, refer to Figure 9The width dimension of each grid in the turnover rack 10 for placing the protective cover 001 is only slightly larger than the width dimension of the protective cover 001, that is, the gap after the protective cover 001 is placed is small, and the multiple parts in the turnover rack 10 for the protective cover 001 to abut are provided as rotatable cylinders 11. In order to position more accurately during the turnover of the turnover rack, multiple spaced positioning holes 12 are provided in the length direction of the turnover rack, and corresponding positioning assemblies 13 that can extend into or exit the positioning holes 12 are provided on the main body frame 70. The power source of the positioning assembly 13 can be a pneumatic cylinder, a motor, etc., and the front end of the actuator is preferably in the shape of a round rod with a chamfer.

[0073] Workflow, when machining the protective cover, the entire turnover rack is transferred into the machining equipment, and the positioning assembly 13 is inserted into the positioning hole 12 to fix the turnover rack. At this time, one protective cover 001 is positioned directly below the inner pressure wheel 30.

[0074] First step, the inner pressure wheel 30 is lowered as a whole, the small diameter part enters the inside of the protective cover 001, and the large diameter part cooperates with the outer circle of the protective cover 001.

[0075] Second step, the driving device 40 is started, the power friction wheel 150 is in contact with the protective cover 001 and drives it to rotate, so that the protective cover 001 is partially separated from the turnover rack 10, and the machined screw hole is exposed.

[0076] Third step, the first machining device 50 and the second machining device 60 on both sides perform thread machining on the protective cover 001.

[0077] Fourth step, the driving device 40 works in reverse to rotate the protective cover 001 back into the turnover rack 10.

[0078] Fifth step, the inner pressure wheel 30 is raised, the turnover rack 10 is released from positioning, and is transferred to the next machining position.

[0079] This cycle is repeated to machine each protective cover 001 in turn until the machining is completed.

[0080] After that, the turnover rack 10 is transferred out of the machining equipment, and the machining of this round is completed.

[0081] Example 2:

[0082] The turnover rack of the circular saw protective cover machining equipment adopts a hexagonal structure, and each of the six boundary surfaces of the turnover rack can place one protective cover, so that the machining of six protective covers can be realized at the same time. The material of the turnover rack is Q235 steel, and the frame is a welded structure, which is convenient for manufacturing according to the size of the protective cover. The length of the hexagonal turnover rack is 160mm, and there is enough excess after the protective cover is placed to avoid collision.

[0083] Example 3:

[0084] The power friction wheel in the driving device is made of elastic material to improve the friction coefficient with the protective cover. The driving motor is a 2KW three-phase asynchronous motor, and the transmission adopts pulley reduction, and the pulley transmission ratio is set to 1:5 to obtain greater torque. The motor speed is adjustable, and the highest speed is 3000 rpm.

[0085] The specific embodiments described herein are merely illustrative of the spirit of the present application. Those skilled in the art of the present application can make various modifications or supplements to the described specific embodiments or replace them with similar ways, but will not deviate from the spirit of the present application or exceed the scope defined in the attached technical solutions.

Claims

1. A machining equipment for a protective cover for a circular saw, characterized in that... The device includes: a turnover rack (10) for placing multiple protective covers (001), wherein each protective cover (001) is placed in the turnover rack (10) with its straight edge open facing upwards and its arc surface facing downwards and abutting against each other; a conveyor roller (20) for driving the turnover rack (10) to rotate; an inner pressure roller (30) disposed above the conveyor roller (20) for applying pressure to the inner and outer sides of each protective cover (001); a drive device (40) for driving the protective cover (001) to rotate and thus detach from the turnover rack (10); and a first processing power device (50) and a second processing power device (60) disposed on both sides of the protective cover (001) for processing the screw holes of the protective cover (001); Half of the diameter of the inner pressure wheel (30) matches the inner diameter of the protective cover (001), and the other half matches the outer shape of the protective cover (001); Also includes: The main frame (70) supporting the conveyor roller (20); A feed platform (80) fixed to one side of the main frame (70) and connected to the conveyor roller (20); A wall panel (90) with one end fixed to the side of the main frame (70) and the other end extending vertically upwards; A scaffold (100) with one end fixed to the extended end of the wall panel (90) and the other end extending horizontally toward the center of the equipment; The main body is mounted on the lower surface of the springboard (100) of the first linear carriage (110); A fork (120) for rotatably mounting the inner pressure wheel (30) is fixedly mounted on the slide of the first linear carriage (110); A mounting platform (130) fixed to the main frame (70) for mounting the first processing power unit (50) and the second processing power unit (60); and flow strips (140) respectively fixedly installed on both sides of the conveying roller (20) in the conveying direction; The drive device (40) includes: A dynamic friction wheel (150) in contact with the outer edge of the disk assembly of the inner pressure wheel (30) and the protective cover (001); An electric motor (151) provides power to the power friction wheel (150); The belt drive assembly (152) transmits the power of the motor (151) to the power friction wheel (150); A second linear carriage (153) is equipped with a motor (151), a pulley drive assembly (152), and a power friction wheel (150). The second linear carriage (153) can be driven to rise and fall in the vertical direction to contact or move away from the outer edge of the disc assembly.

2. The machining equipment for the circular saw protective cover as described in claim 1, characterized in that... The turnover rack (10) has a positioning hole (12), and the equipment has a positioning component (13) that can be retracted and positioned to match the positioning hole (12).

3. The machining equipment for the circular saw protective cover as described in claim 1, characterized in that... The first linear carriage (110) and the second linear carriage (153) are driven by a screw and nut transmission structure.

4. The machining equipment for the circular saw protective cover as described in claim 1, characterized in that... The gap between the protective cover (001) in the turnover rack (10) is only slightly larger than the width of the protective cover (001).

5. The machining equipment for the circular saw protective cover as described in claim 1, characterized in that... The protective cover (001) in the turnover rack (10) is provided with a rotatable cylinder (11) at the abutment position.

6. The machining equipment for the circular saw protective cover as described in claim 1, characterized in that... The conveying roller (20) has its own power drive mechanism.

7. A machining method for a circular saw protective cover, wherein the machining method is performed using the machining equipment for the circular saw protective cover according to any one of claims 1-6, characterized in that... This includes the following steps: a. Place multiple protective covers (001) into the turnover rack (10), with each protective cover (001) placed against each other with its straight edge facing up and its curved surface facing down; b. Drive the turnover rack (10) into the machining equipment and position a protective cover (001) directly below the inner pressure roller (30); c. The inner pressure roller (30) descends as a whole, with its small-diameter portion entering the interior of the protective cover (001) and its large-diameter portion fitting into the outer circle of the protective cover (001); d. Start the drive unit (40), which will cause the protective cover (001) to detach from the turnover frame (10) and rotate until the screw hole to be processed is exposed; e. The first machining power unit (50) and the second machining power unit (60) machine the screw holes of the protective cover (001); f. The drive unit (40) operates in reverse, rotating the protective cover (001) back into the turnover rack (10); g. The inner pressure roller (30) rises, the turnover rack (10) is released from positioning and flows to the next protective cover (001) processing position.

8. The method as described in claim 7, characterized in that... The drive device (40) includes a power friction wheel (150), which drives the outer circle of the protective cover (001) to rotate by contacting it.

9. The method as described in claim 7, characterized in that... The inner pressure wheel (30) has a dual diameter, with the smaller diameter matching the inner diameter of the protective cover (001) and the larger diameter matching the outer shape.

10. The method as described in claim 7, characterized in that... The turnover rack (10) is positioned by the positioning component (13) when it flows through the machining equipment.

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