Telescopic saw blade protection device for woodworking band sawing machine

Abstract

The utility model provides a telescopic saw blade protection device for a woodworking band sawing machine, which comprises an upper chamber body, a telescopic shield and a moving component, a fixed rib plate is arranged on one side of the upper chamber body, the upper end of the telescopic shield is connected with the rib plate, and the lower end of the telescopic shield is connected with the moving component. The telescopic protective cover comprises a top protective cover, a middle protective cover and a bottom protective cover, and the top protective cover, the middle protective cover and the bottom protective cover are sequentially connected in a sleeved mode and are in sliding connection. By adjusting the height of the telescopic protective cover and increasing or decreasing the number of the middle protective covers, the telescopic protective cover is more widely suitable for the requirements of different heights, the flexibility is higher, the practicability is higher, the operation is simple, the use effect of the protective cover is enhanced, and the protective cover is suitable for popularization and application. And the use experience of the user is improved.

Description

Technical Field

[0001] This utility model belongs to the field of woodworking machinery technology, specifically relating to a telescopic saw blade protection device for woodworking band saws. Background Technology

[0002] The woodworking band saw consists of a base, a frame with an upper and lower housing, an upper and lower shaft, a driven pulley and a driving pulley, a band saw blade, a worktable, a motor, a transmission mechanism, and a motor controller.

[0003] In a typical vertical band saw, the lower saw wheel is the driving wheel, and the upper saw wheel is the driven wheel. The saw blade is mounted on the outer circumference of both the upper and lower saw wheels. In the sawing area, the safety of the saw blade is crucial. To prevent accidental contact, all saw blades not involved in sawing are designed with shielding devices to ensure a safe distance from the operator. Existing band saws use saw blade guards to provide protection. However, as user demands increase, the design of saw blade guards is constantly being updated and improved. Fixed guards are simple in design and can completely enclose the saw blade, ensuring it is not exposed. Movable guards can open flexibly to the side, allowing the operator to adjust the saw blade while maintaining protection. However, neither type of guard can adjust its height according to the thickness of the wood being sawn, reducing its effectiveness and impacting the user experience. Therefore, there is an urgent need to design a flexible, retractable, adaptable saw blade protection device that does not interfere with operation and maintenance, thereby improving the safety and convenience of using woodworking band saws. Utility Model Content

[0004] The purpose of this utility model is to provide a telescopic saw blade protection device for woodworking band saws, which solves the problems that existing protective covers cannot adjust their protection height according to the thickness of the wood being sawed, and are therefore inconvenient to use.

[0005] To achieve the above-mentioned objectives, the present invention adopts the following technical solution:

[0006] A telescopic saw blade protection device for a woodworking band saw includes an upper chamber, a telescopic guard, and a moving assembly. A fixed reinforcing plate is provided on one side of the upper chamber, the upper end of the telescopic guard is connected to the reinforcing plate, and the lower end of the telescopic guard is connected to the moving assembly.

[0007] Furthermore, the telescopic cover includes a top cover, a middle cover, and a bottom cover, which are sequentially nested together and are slidably connected.

[0008] Furthermore, the top cover, middle cover, and bottom cover all have openings on the same side.

[0009] Furthermore, the top of the outer contact surface of the bottom cover is provided with a pleated edge, and the bottom of the inner contact surface and the top of the outer contact surface of the middle cover are both provided with pleated edges; there is ≥1 middle cover.

[0010] Furthermore, the movable component includes a movable part, a connecting plate, and a fixed base. The top of the movable part is movably connected through a through hole provided on the stiffener plate, and the bottom of the movable part is inserted into the fixed base and fixedly connected by fixing bolts and lock nuts. The connecting plate is used to connect the telescopic cover and the fixed base.

[0011] Furthermore, the connecting plate is L-shaped with elongated through holes at both ends. A set of mounting nuts is fixed to the bottom of the contact surface inside the bottom cover. The bolts pass through the through holes on the connecting plate and are then engaged with the mounting nuts for fixation. The other end of the connecting plate is fixedly connected to the fixing base.

[0012] Furthermore, the moving part is provided with a guide rack, and the gear that cooperates with the guide rack is movably connected to the upper chamber through a rotating shaft. A handwheel is fixed on one side of the rotating shaft that passes through the upper chamber.

[0013] Furthermore, a spacer is fixedly provided between the handwheel and the upper chamber, and the spacer is rotatably connected to the handwheel.

[0014] Furthermore, a set of threaded rods is provided on the side wall of the top cover, and the threaded rods are used to fix the top cover to the stiffening plate through a mounting plate that cooperates with them.

[0015] Furthermore, the mounting plate is fixedly connected to the reinforcing plate by bolts.

[0016] Compared with the prior art, the advantages and beneficial technical effects of this utility model are:

[0017] 1. This utility model is equipped with an adjustable height telescopic cover, which makes it easy for users to adjust its protective height according to the thickness of the wood being sawn, thereby enhancing the effectiveness of the cover and improving the user experience.

[0018] 2. The telescopic guard of this utility model can flexibly adjust the number of intermediate guards according to the size and specifications of the band saw. When the band saw is very large, the height of the wood it can cut is also very high, and the range of stretching and compression of the telescopic guard will also increase. Therefore, the number of intermediate guards can be increased to expand the application range of the telescopic guard. It has high flexibility and strong practicality.

[0019] 3. This utility model uses a handwheel to move the guide rack, thereby completing the extension and retraction of the telescopic cover. The adjustment method is quick and convenient, the operation is simple, and it enhances the user experience.

[0020] 4. Compared with fixed protective covers, the protective device of this utility model makes it easier to repair, replace or adjust the saw blade, reducing the time and cost of equipment maintenance. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the upper chamber structure of the woodworking band saw of this utility model;

[0022] Figure 2 This is a schematic diagram of the upper chamber of the woodworking band saw of this utility model from another direction.

[0023] Figure 3 for Figure 2 Enlarged view of region A;

[0024] Figure 4 This is a schematic diagram of the telescopic shield in its stretched state.

[0025] Figure 5 This is a cross-sectional view from the front when the telescopic shield is in the extended state.

[0026] Figure 6 A schematic diagram of the telescopic protective cover in its compressed state;

[0027] Figure 7 This is a schematic diagram of the structure of the middle protective cover;

[0028] Figure 8 This is a cross-sectional view of the central protective shield from the front.

[0029] Figure 9 This is a schematic diagram of the mobile component structure;

[0030] Figure 10 for Figure 9 Enlarged view of region B.

[0031] In the diagram: 1. Upper chamber; 2. Rib plate; 3. Telescopic cover; 4. Moving component; 5. Top cover; 6. Middle cover; 7. Bottom cover; 8. Folded edge; 9. Through port; 10. Threaded rod; 11. Mounting plate; 12. Mounting nut; 13. Moving part; 14. Connecting plate; 15. Guide rack; 16. Fixed seat; 17. Fixing bolt; 18. Locking nut; 19. Gear; 20. Handwheel; 21. Spacer. Detailed Implementation

[0032] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments, but the scope of protection claimed by this utility model is not limited to the scope of the examples described. Example 1

[0033] As attached Figure 1-10As shown, a telescopic saw blade protection device for a woodworking band saw includes an upper chamber 1, a telescopic cover 3, and a moving component 4. A fixed reinforcing plate 2 is provided on one side of the upper chamber 1, the upper end of the telescopic cover 3 is connected to the reinforcing plate 2, and the lower end of the telescopic cover 3 is connected to the moving component 4.

[0034] The telescopic protective cover 3 includes a top cover 5, a middle cover 6, and a bottom cover 7, which are sequentially nested together and slidably connected. The bottom cover 7 and the middle cover 6 of the telescopic protective cover 3 are moved up and down by the moving component 4, thereby adjusting the protective height of the cover. Furthermore, each of the top cover 5, the middle cover 6, and the bottom cover 7 has an opening 9 on the same side, which is used for mounting a saw blade.

[0035] Specifically, the bottom cover 7 has a pleated edge 8 on the top of its outer contact surface, and the middle cover 6 has pleated edges 8 on both the bottom of its inner contact surface and the top of its outer contact surface. There can be one or more middle covers 6, and the number of middle covers 6 can be increased or decreased according to actual needs, making it more widely applicable to band saws of different sizes. When the bottom cover 7 moves upward until it contacts the bottom pleated edge 8 of the middle cover 6 above it, it can drive the middle covers 6 to move upward together, and so on until the telescopic cover 3 is compressed to its minimum state.

[0036] The movable component 4 of this utility model includes a movable part 13, a connecting plate 14 and a fixed base 16. The movable part 13 passes through a through hole provided on the rib plate 2. When the movable component 4 moves up and down, the movable part 13 can move up and down within the through hole of the rib plate 2.

[0037] The bottom of the movable part 13 is inserted into the fixed base 16, and the fixed base 16 is provided with a fixing bolt 17 and a locking nut 18. The fixing bolt 17 passes through the locking nut 18 and is screwed into the fixed base 16 until the movable part 13 is pressed against it. At this time, the locking nut 18 is tightened to fix the fixed base 16 and the movable part 13.

[0038] The connecting plate 14 is used to fix the bottom cover 7 and the fixing seat 16 of the telescopic cover 3. The connecting plate 14 is L-shaped and has elongated through holes at both ends. A set of mounting nuts 12 is fixed to the bottom of the inner contact surface of the bottom cover 7. The bolts are used to fix the connecting plate 14 by passing through the through holes and engaging with the mounting nuts 12. The other end of the connecting plate 14 is also connected to the fixing seat 16 by tightening with bolts and nuts.

[0039] The movable component 13 is provided with a guide rack 15, and a gear 19 that meshes with the guide rack 15 is movably connected to the upper chamber 1 via a rotating shaft. A handwheel 20 is fixed to one side of the rotating shaft that passes through the upper chamber 1. A spacer 21 is fixedly provided between the handwheel 20 and the upper chamber 1, and the spacer 21 is rotatably connected to the handwheel 20. When the handwheel 20 is rotated, it drives the gear 19 to rotate, causing the guide rack 15 that meshes with it to move up and down, thereby driving the movable component 4 to move up and down.

[0040] Specifically, the top cover 5 at the upper end of the telescopic cover 3 is fixedly connected to the stiffening plate 2, and is fixed to the mounting plate 11 by a set of threaded rods 10 on the side wall of the top cover 5. The threaded rods 10 pass through the mounting plate 11 and are then tightened with nuts to secure the connection. The mounting plate 11 is integrally formed with the stiffening plate 2, or it is fixedly connected by bolts.

[0041] Installation process of this utility model device:

[0042] 1. The top cover 5 is fixed to the stiffening plate 2 of the upper chamber 1 by means of the threaded rod 10 and the mounting plate 11.

[0043] 2. Select an appropriate number of intermediate covers 6 as needed, and attach them sequentially under the top cover 5, ensuring that the pleats 8 fit together.

[0044] 3. Attach the bottom cover 7 inside the bottom middle cover 6.

[0045] 4. Connect the bottom cover 7 to the fixed base 16 through the L-shaped connecting plate 14, and tighten the bolts after adjusting the position of the elongated through hole.

[0046] 5. Pass the top of the movable part 13 through the through hole of the stiffener 2, insert the bottom into the fixing seat 16, and lock it with the fixing bolt and the lock nut.

[0047] 6. Install gear 19, shaft and handwheel 20, and ensure that guide rack 15 is properly engaged with gear 19.

[0048] The specific operating steps of this utility model are as follows:

[0049] When the operator turns the handwheel 20, it drives the gear 19 to rotate, causing the guide rack 15 that meshes with it to move up and down, which in turn drives the telescopic cover 3 to move up and down.

[0050] When the bottom cover 7 moves upward to contact the bottom pleated edge 8 of the top edge 8 and the bottom edge 8 of the middle cover 6 above it, it can drive the middle cover 6 to move upward. Similarly, it can also drive the other middle covers 6 above it to move upward, and sequentially stack and compress the telescopic covers 3 to the appropriate state.

[0051] When the handwheel 20 is turned in the opposite direction, the bottom cover 7 moves downward, which in turn moves the middle cover 6 downward to the appropriate height, thus completing the stretching of the telescopic cover 3.

[0052] This utility model device adjusts the height of the protective device according to the thickness of the wood, effectively covering the exposed part of the saw blade. During maintenance, the moving components and telescopic guard can be quickly disassembled by loosening the fixing bolts and locking nuts.

[0053] The above examples only represent the technical solution of this utility model and are not intended to limit the experiment. Although we have improved the experimental solution, researchers in the same field can still further improve the experimental solution described above or make scientifically equivalent substitutions for the experimental steps. These changes do not cause the substance of the corresponding technical solution to deviate from the spirit and scope of the technical solution claimed by this utility model.

Claims

1. A telescopic saw blade protection device for a woodworking band saw, characterized in that: It includes an upper chamber, a telescopic cover, and a moving component. A fixed stiffener is provided on one side of the upper chamber. The upper end of the telescopic cover is connected to the stiffener, and the lower end of the telescopic cover is connected to the moving component.

2. A telescopic saw blade protection device for a woodworking band saw machine according to claim 1, characterized in that, The telescopic cover includes a top cover, a middle cover, and a bottom cover, which are sequentially nested together and are slidably connected.

3. A telescopic saw blade protection device for a woodworking band saw machine according to claim 2, characterized in that: The top cover, middle cover, and bottom cover all have openings on the same side.

4. A telescopic saw blade protection device for a woodworking band saw machine according to claim 2 or 3, characterized in that: The bottom cover has a pleated edge at the top of its outer contact surface, and the middle cover has pleated edges at the bottom of its inner contact surface and the top of its outer contact surface; there is at least one middle cover.

5. A telescopic saw blade protection device for a woodworking band saw machine according to claim 1, characterized in that: The movable component includes a movable part, a connecting plate, and a fixed base. The top of the movable part is movably connected through a through hole provided on the stiffener plate, and the bottom of the movable part is inserted into the fixed base and fixedly connected by fixing bolts and lock nuts. The connecting plate is used to connect the telescopic cover and the fixed base.

6. A telescopic saw blade protection device for a woodworking band saw machine according to claim 5, characterized in that: The connecting plate is L-shaped with elongated through holes at both ends. A set of mounting nuts is fixed to the bottom of the contact surface inside the bottom cover. Bolts are passed through the through holes on the connecting plate and then engaged with the mounting nuts for fixation. The other end of the connecting plate is fixedly connected to the fixing base.

7. A telescopic saw blade protection device for a woodworking band saw machine according to claim 5, characterized in that: The moving part is provided with a guide rack, and the gear that cooperates with the guide rack is movably connected to the upper chamber through a rotating shaft. A handwheel is fixed on one side of the rotating shaft that passes through the upper chamber.

8. A telescopic saw blade protection device for a woodworking band saw according to claim 7, characterized in that: A spacer is fixedly provided between the handwheel and the upper chamber, and the spacer is rotatably connected to the handwheel.

9. A telescopic saw blade protection device for a woodworking band saw machine according to claim 2, characterized in that: A set of threaded rods is provided on the side wall of the top cover, and the threaded rods are used to fix the top cover to the stiffening plate through a mounting plate that cooperates with them.

10. A telescopic saw blade protection device for a woodworking band saw machine according to claim 9, characterized in that: The mounting plate is fixedly connected to the reinforcing plate by bolts.

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