Permanent magnet direct drive band saw machine

Abstract

The utility model belongs to the field of band sawing machine, concretely relates to a permanent magnet direct drive type band sawing machine, including the base, the upper end fixed connection of base has the connecting frame, the upper end fixed connection of connecting frame has the adjusting box, the upper end fixed connection of base has the flat plate, be provided with feeding mechanism on the flat plate, the inside of base is provided with the saw blade, the inside fixed connection of adjusting box has two symmetrical distribution's guide rod, the outside slide connection of guide rod has the wheel support, the inside bearing mounting of wheel support has the support wheel. The utility model discloses through setting up the support wheel, support frame and screw rod etc. structure in the inside of adjusting box, can drive support frame to move through the thread cooperation between screw rod and support frame in the process of using, can adjust the spring one's elastic value in the process of moving of support frame, thereby can drive the support wheel to the saw blade and be tensioned through the elastic value of spring one, can effectively avoid the saw blade slack.

Description

Technical Field

[0001] This utility model relates to the field of band saw technology, specifically a permanent magnet direct drive band saw. Background Technology

[0002] According to the patent authorization announcement number CN211614504U, a permanent magnet direct-drive band saw is disclosed. The band saw includes a saw frame, a worktable, a permanent magnet motor, an upper saw wheel, a lower saw wheel, a saw blade, a controller, and a battery. The saw frame includes an upper wheel cavity and a lower wheel cavity. The upper and lower saw wheels are respectively located in the upper and lower wheel cavities. Grooves are provided on the outer circumference of both the upper and lower saw wheels. The worktable is horizontally located on the saw frame near the top of the lower wheel cavity. The saw blade passes through the worktable and is fitted into the grooves of the upper and lower saw wheels. The permanent magnet motor is embedded in the lower saw wheel, and the motor shaft is fixed on the lower wheel cavity. The controller and the battery are located on the saw frame. The controller is electrically connected to the permanent magnet motor, and the battery is connected to the controller. This utility model belongs to the field of band saw technology. Specifically, it provides a permanent magnet direct drive band saw that uses a permanent magnet brushless DC motor to directly drive the saw blade and can achieve stepless speed regulation of the saw blade, making the band saw more widely applicable. It is also powered by a battery, realizing a cordless design and enabling battery sharing.

[0003] However, in existing band saws, the material is fed manually during the cutting process. This manual feeding method easily leads to hand contact with the saw blade, causing operator injury. Furthermore, plastic deformation occurs during band saw use, causing the saw blade to lengthen, which affects its stability. Therefore, improvements to the existing technology are needed. Utility Model Content

[0004] The purpose of this invention is to provide a permanent magnet direct-drive band saw that solves the problems of easy danger caused by manual feeding and easy loosening of the saw blade after plastic deformation.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a permanent magnet direct-drive band saw, comprising a base, a connecting frame fixedly connected to the upper end of the base, an adjusting box fixedly connected to the upper end of the connecting frame, a flat plate fixedly connected to the upper end of the base, a feeding mechanism provided on the flat plate, a saw blade provided inside the base, two symmetrically distributed guide rods fixedly connected inside the adjusting box, a wheel frame slidably connected to the outer side of the guide rods, a support wheel installed inside the wheel frame via bearings, a screw installed inside the adjusting box via bearings, a support frame threadedly connected to the outer side of the screw, and a spring provided on the outer side of the guide rods.

[0006] Preferably, the support wheel is in contact with the saw blade, and a handwheel is fixedly connected to the upper end of the screw, which can drive the screw to rotate.

[0007] Preferably, the support frame is slidably connected to the guide rod and slidably connected to the inner wall of the adjustment box, and the support frame can compress the spring.

[0008] Preferably, one end of the spring is fixedly connected to the wheel frame, and the other end of the spring is fixedly connected to the support frame. The spring can support the wheel frame through its elastic force.

[0009] Preferably, the feeding mechanism includes a guide rail, the upper end of the plate is fixedly connected to the guide rail, a movable seat is slidably connected to the outer side of the guide rail, a guide frame is fixedly connected to the outer side of the movable seat, an extrusion frame is slidably connected to the outer side of the guide frame, a handle is fixedly connected to the upper end of the extrusion frame, a second spring is provided on the outer side of the rod of the guide frame, and a baffle is fixedly connected to the upper end of the plate. The handle can drive the extrusion frame and the movable seat to move along the guide rail.

[0010] Preferably, the baffle is fixedly connected to the guide rail, the movable seat is slidably connected to the plate, and the extrusion frame is slidably connected to both the plate and the movable seat. The extrusion frame can extrude and limit the material.

[0011] Preferably, one end of the second spring is fixedly connected to the movable seat, and the other end of the second spring is fixedly connected to the extrusion frame. The second spring can support the extrusion frame through its elastic force.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. This utility model adds a support wheel, support frame and screw inside the adjustment box. During use, the screw and the support frame can be threaded together to move the support frame. During the movement of the support frame, the elasticity of the spring can be adjusted. The elasticity of the spring can then drive the support wheel to tension the saw blade, which can effectively prevent the saw blade from loosening.

[0014] 2. This utility model uses a structure with guide rails, extrusion frame and moving seat added to the flat plate. During use, the spring force of the second spring can drive the extrusion frame to press against the outside of the workpiece, and then the moving seat can drive the workpiece to feed. This allows the operator's hands to be within a safe range, effectively avoiding danger. Attached Figure Description

[0015] Figure 1 This is a perspective view of the overall structure of this utility model;

[0016] Figure 2 For the present utility model Figure 1 A partial three-dimensional sectional view of the structure;

[0017] Figure 3 For the present utility model Figure 2 A 3D magnified view of the support wheel;

[0018] Figure 4 For the present utility model Figure 1 Enlarged view of the structure of part A.

[0019] In the diagram: 1. Base; 2. Connecting frame; 3. Adjustment box; 4. Plate; 5. Feeding mechanism; 6. Saw blade; 7. Guide rod; 8. Wheel frame; 9. Support wheel; 10. Support frame; 11. Screw; 12. Handwheel; 13. Spring 1; 51. Guide rail; 52. Moving seat; 53. Guide frame; 54. Extrusion frame; 55. Handle; 56. Spring 2; 57. Baffle. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1 , Figure 2 , Figure 3 A permanent magnet direct-drive band saw includes a base 1, a connecting frame 2 fixedly connected to the upper end of the base 1, an adjusting box 3 fixedly connected to the upper end of the connecting frame 2, a plate 4 fixedly connected to the upper end of the base 1, a feeding mechanism 5 provided on the plate 4, a saw blade 6 provided inside the base 1, two symmetrically distributed guide rods 7 fixedly connected inside the adjusting box 3, a wheel frame 8 slidably connected to the outer side of the guide rods 7, a support wheel 9 installed inside the wheel frame 8 via bearings, a screw 11 installed inside the adjusting box 3 via bearings, a support frame 10 threadedly connected to the outer side of the screw 11, and a spring 13 provided on the outer side of the guide rods 7.

[0022] Please see Figure 1 , Figure 2 , Figure 3The support wheel 9 contacts the saw blade 6. The upper end of the screw 11 is fixedly connected to the handwheel 12, which can drive the screw 11 to rotate. The support frame 10 is slidably connected to the guide rod 7 and to the inner wall of the adjustment box 3. The support frame 10 can compress the spring 13. One end of the spring 13 is fixedly connected to the wheel frame 8, and the other end is fixedly connected to the support frame 10. The spring 13 can support the wheel frame 8 through its elasticity.

[0023] Please see Figure 1 , Figure 4 The feeding mechanism 5 includes a guide rail 51. The upper end of the plate 4 is fixedly connected to the guide rail 51. A movable seat 52 is slidably connected to the outer side of the guide rail 51. A guide frame 53 is fixedly connected to the outer side of the movable seat 52. An extrusion frame 54 is slidably connected to the outer side of the guide frame 53. A handle 55 is fixedly connected to the upper end of the extrusion frame 54. A second spring 56 is provided on the outer side of the rod of the guide frame 53. A baffle 57 is fixedly connected to the upper end of the plate 4. The handle 55 can drive the extrusion frame 54 and the movable seat 52 to move along the guide rail 51. The baffle 57 is fixedly connected to the guide rail 51. The movable seat 52 is slidably connected to the plate 4. The extrusion frame 54 is slidably connected to both the plate 4 and the movable seat 52. The extrusion frame 54 can extrude and limit the material. One end of the second spring 56 is fixedly connected to the movable seat 52. The other end of the second spring 56 is fixedly connected to the extrusion frame 54. The second spring 56 can support the extrusion frame 54 with its elastic force.

[0024] The specific implementation process of this utility model is as follows: When in use, turn the handwheel 12, which drives the screw 11 to rotate. During the rotation, the screw 11 can drive the support frame 10 to move through the threaded engagement with the support frame 10. During the movement, the support frame 10 can adjust the elastic force of the spring 13. When the spring 13 is compressed, the elastic force increases. The spring 13 pushes the wheel frame 8 upward through the elastic force generated by the deformation. The wheel frame 8 can tension the saw blade 6 through the support wheel 9, thereby effectively preventing the saw blade 6 from loosening.

[0025] Then pull the handle 55. The handle 55 drives the extrusion frame 54 to move in the direction of the guide rail 51 and extrudes the second spring 56. Then place the workpiece on the plate 4 and release the handle 55. The second spring 56 returns to its original position. The second spring 56 can use its elasticity to drive the extrusion frame 54 to extrude the workpiece. Then push the handle 55. The handle 55 can use the extrusion frame 54 to drive the workpiece to move towards the saw blade 6, so that the workpiece can be safely cut.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A permanent magnet direct-drive band saw, comprising a base (1), characterized in that: A connecting frame (2) is fixedly connected to the upper end of the base (1), and an adjustment box (3) is fixedly connected to the upper end of the connecting frame (2). A plate (4) is fixedly connected to the upper end of the base (1), and a feeding mechanism (5) is provided on the plate (4). A saw blade (6) is provided inside the base (1). Two symmetrically distributed guide rods (7) are fixedly connected inside the adjustment box (3). A wheel frame (8) is slidably connected to the outside of the guide rod (7). A support wheel (9) is installed inside the wheel frame (8) through a bearing. A screw (11) is installed inside the adjustment box (3) through a bearing. A support frame (10) is threadedly connected to the outside of the screw (11). A spring (13) is provided on the outside of the guide rod (7).

2. The permanent magnet direct-drive band saw according to claim 1, characterized in that: The support wheel (9) is in contact with the saw blade (6), and a handwheel (12) is fixedly connected to the upper end of the screw (11).

3. A permanent magnet direct-drive band saw according to claim 1, characterized in that: The support frame (10) is slidably connected to the guide rod (7), and the support frame (10) is slidably connected to the inner wall of the adjustment box (3).

4. A permanent magnet direct-drive band saw according to claim 1, characterized in that: One end of the spring (13) is fixedly connected to the wheel frame (8), and the other end of the spring (13) is fixedly connected to the support frame (10).

5. A permanent magnet direct-drive band saw according to claim 1, characterized in that: The feeding mechanism (5) includes a guide rail (51). The upper end of the plate (4) is fixedly connected to the guide rail (51). A movable seat (52) is slidably connected to the outer side of the guide rail (51). A guide frame (53) is fixedly connected to the outer side of the movable seat (52). An extrusion frame (54) is slidably connected to the outer side of the guide frame (53). A handle (55) is fixedly connected to the upper end of the extrusion frame (54). A spring (56) is provided on the outer side of the rod of the guide frame (53). A baffle (57) is fixedly connected to the upper end of the plate (4).

6. A permanent magnet direct-drive band saw according to claim 5, characterized in that: The baffle (57) is fixedly connected to the guide rail (51), the movable seat (52) is slidably connected to the plate (4), and the extrusion frame (54) is slidably connected to both the plate (4) and the movable seat (52).

7. A permanent magnet direct-drive band saw according to claim 5, characterized in that: One end of the second spring (56) is fixedly connected to the movable seat (52), and the other end of the second spring (56) is fixedly connected to the extrusion frame (54).

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