A material baffle deflection mechanism for a woodworking band saw

Abstract

The application discloses a material baffle deflection mechanism of a woodworking band saw machine, which comprises a fixed support, a deflection arm arranged above the fixed support, and a baffle arranged on one side of the deflection arm; one end of the fixed support is connected with one end of the deflection arm through a rotating assembly; a deflection plate is arranged between the deflection arm and the fixed support, and the deflection arm, the deflection plate and the fixed support are connected through an eccentric assembly. The eccentric assembly comprises a deflection handle and a locking nut, the deflection handle passes through the locking nut, the deflection arm, the deflection plate and the fixed support in sequence, and is connected with a lock nut on the other side of the fixed support. The material baffle deflection is realized by rotating the eccentric shaft on the deflection handle, the eccentric shaft does not directly contact the baffle, and the baffle is not abraded, so that the stability is good. The application realizes switching between two states of locking and deflection adjustment, only two parts of the deflection handle and the locking nut need to be rotated, and the operation is simple.

Description

Technical Field

[0001] This invention relates to the field of woodworking machinery and equipment technology, and in particular to a material baffle tilting mechanism for a woodworking band saw. Background Technology

[0002] A woodworking band saw is a device that uses a circular band saw blade that rotates continuously around two saw wheels to saw wood through its linear motion. The material baffle assembly is a crucial component of the woodworking band saw, primarily serving to guide and position the wood being cut. Specifically, its guiding function ensures the wood remains against the straight material baffle for a straight cut, preventing the saw kerf from deviating. Its positioning function involves adjusting the distance between the material baffle and the saw blade to determine the width of the cut wood. The material baffle acts as a positioning point, and its position can be adjusted to control the width of the cut wood.

[0003] Based on its guiding and positioning functions, it's easy to see that the material baffle should be parallel to the saw blade during use. However, in actual continuous straight cutting of wood, if the material baffle is completely parallel to the saw blade, the wood is prone to getting stuck in the blade, leading to jamming or breakage. Slightly tilting the material baffle, so that the distance between it and the saw blade is smaller at the front and larger at the back, solves this problem. The mechanism that achieves this tilting function is called the material baffle tilting mechanism.

[0004] Existing material baffle tilting mechanisms are mostly cam-based, utilizing the eccentricity of the cam to adjust the angle between the material baffle and the saw blade, thus achieving material baffle tilting. Because the cam directly presses against the aluminum baffle, it suffers from wear, leading to poor stability. Furthermore, the adjustment process requires two or three operations: 1. Loosening and locking the cam; 2. Adjusting the cam position; 3. Loosening and locking the material baffle. The existing material baffle tilting mechanism adjustment process is complex and inconvenient. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a material baffle tilting mechanism for a woodworking band saw, which has the characteristics of stable structure and easy adjustment.

[0006] To achieve the above objectives, the technical solution provided by the present invention is as follows:

[0007] A material baffle tilting mechanism for a woodworking band saw includes a fixed support, a tilting arm above the fixed support, and a baffle on one side of the tilting arm; one end of the fixed support is connected to one end of the tilting arm via a rotating assembly; a tilting plate is provided between the tilting arm and the fixed support, and the tilting arm, the tilting plate, and the fixed support are connected by an eccentric assembly.

[0008] Furthermore, the rotating assembly includes a rotating shaft, one end of which is hinged through a fixed support. The rotating shaft can rotate around the axis of the fixed support, but cannot move axially. The other end of the rotating shaft is fastened to the yaw arm.

[0009] Furthermore, the eccentric assembly includes a swing handle and a locking nut. The swing handle passes sequentially through the locking nut, the swing arm, the swing plate, and the fixed support, and is connected to an anti-loosening nut on the other side of the fixed support.

[0010] Furthermore, the top of the sway handle is a round handle, and the bottom of the sway handle is a stepped shaft.

[0011] Furthermore, the sway handle and the locking nut are threaded together, and the sway handle, the sway plate, and the fixed support are in a small clearance fit.

[0012] Furthermore, the yaw mechanism also includes a locking assembly, which includes a locking handle and a locking block, and is used to connect the yaw arm and the baffle.

[0013] Furthermore, the locking block is disposed in the T-slot of the baffle, and the locking handle passes through the swing arm and is screwed into the locking block.

[0014] Compared with the prior art, the advantages and positive effects of the present invention are:

[0015] 1. The material baffle of this invention is deflected by rotating an eccentric shaft on a deflection handle. One section of the shaft engages with a round hole in the fixed base, and the other section engages with a long slot in the deflection plate. Rotating the eccentric handle causes the eccentric shaft to drive the deflection plate to swing, thus achieving the deflection function. The eccentric shaft does not directly contact the baffle, preventing wear on the baffle and ensuring good stability.

[0016] 2. In the yaw adjustment process of this invention, the locking nut is threadedly engaged with the yaw handle. By rotating the locking nut, the yaw handle can be easily locked and loosened, achieving switching between the locked and yaw adjustment states. Only two parts, the yaw handle and the locking nut, need to be rotated, making operation simple. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 is a schematic diagram of the material baffle tilting mechanism;

[0019] Figure 2 is an exploded view of the material baffle tilting mechanism;

[0020] Figure 3 is a front view schematic diagram of the material baffle tilting mechanism;

[0021] Figure 4 A top view schematic diagram of the material baffle tilting mechanism;

[0022] In the diagram: 1. Baffle; 2. Locking block; 3. Swing arm; 4. Rotating shaft; 5. Fixed support; 6. Anti-loosening nut; 7. Screw; 8. Swing plate; 9. Locking handle; 10. Locking nut; 11. Swing handle. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0024] Example 1

[0025] like Figures 1-4 As shown, a material baffle tilting mechanism for a woodworking band saw includes a baffle 1, a locking block 2, a tilting arm 3, a rotating shaft 4, a fixed support 5, an anti-loosening nut 6, a screw 7, a tilting plate 8, a locking handle 9, a locking nut 10, and a tilting handle 11.

[0026] The fixed support 5 serves as the base of the entire mechanism and can be fixed to the woodworking band saw. One end of the rotating shaft 4 passes through the through hole of the fixed support 5 and is then screwed into the anti-loosening nut 6. The rotating shaft 4 can rotate around its axis, but cannot move along its axis. The other end of the rotating shaft 4 is threaded and screwed into the swing arm 3. The rotating shaft 4 and the swing arm 3 are fastened together and can rotate together around the axis of the rotating shaft 4.

[0027] Two screws 7 pass through the through holes of the sway plate 8 and are screwed into the sway arm 3 to fix the sway plate 8 onto the sway arm 3.

[0028] The sway plate 8 has a long hole in the middle, and the sway arm 3 also has a long hole at the top. The sway handle 11 passes through the locking nut 10, then through the long holes of the sway arm 3 and the sway plate 8, then through the round hole on the fixed support 5, and finally screws in the anti-loosening nut 6 for thread engagement.

[0029] The top of the swing handle 11 is a round handle, and the bottom is a stepped shaft. It has a threaded fit with the locking nut 10 and a slight clearance fit with the swing plate 8 and the fixed support 5. The two shaft segments of the swing handle 11 that contact the swing plate 8 and the fixed support 5 are eccentric. The swing handle 11 can rotate around the axis of the round hole in the fixed support 5, but it cannot move axially. When the swing handle 11 is rotated, the eccentric shaft drives the swing plate 8 and the swing arm 3 to rotate together around the center line of the rotation axis 4, thus achieving the swinging action. When the locking nut 10 rotates and moves towards the swing arm 3, the swing handle 11 and the swing arm 3 are locked. When the locking nut 10 rotates and moves away from the swing arm 3, the swing handle 11 and the swing arm 3 are released, and the swing handle 11 can rotate freely.

[0030] The locking handle 9 passes through the sway arm 3 and is screwed into the locking block 2, forming a threaded engagement. The locking block 2 is located within the T-slot of the baffle 1. Rotating the locking handle 9 drives the locking block 2 closer to the sway arm 3, pressing and fixing the baffle 1 in place. The baffle 1 can swing together with the sway arm 3. Rotating the locking handle 9 in the opposite direction moves the locking block 2 in the opposite direction, releasing the baffle 1. The baffle 1 can be adjusted or replaced according to different usage requirements.

[0031] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions claimed by the present invention.

Claims

1. A material baffle tilting mechanism for a woodworking band saw, characterized in that, The device includes a fixed support, a swing arm above the fixed support, and a baffle on one side of the swing arm. One end of the fixed support is connected to one end of the swing arm via a rotating assembly. A swing plate is provided between the swing arm and the fixed support. The swing arm, swing plate, and fixed support are connected by an eccentric assembly. The rotating assembly includes a rotating shaft, one end of which passes through the fixed support and is hinged. The rotating shaft can rotate around the axis of the fixed support but cannot move axially. The other end of the rotating shaft is fastened to the swing arm. The eccentric assembly includes a swing handle and a locking nut. The swing handle passes sequentially through the locking nut, the swing arm, the swing plate, and the fixed support, and is connected to an anti-loosening nut on the other side of the fixed support. The top of the swing handle is a round handle, and the bottom is a stepped shaft. It has a threaded fit with the locking nut and a slight clearance fit with the swing plate and the fixed support. The two shaft segments that contact the swing handle with the swing plate and the fixed support are eccentric structures.

2. The material baffle tilting mechanism of the woodworking band saw machine according to claim 1, characterized in that, The yaw mechanism also includes a locking assembly, which includes a locking handle and a locking block, and is used to connect the yaw arm and the baffle.

3. The material baffle tilting mechanism of the woodworking band saw machine according to claim 2, characterized in that, The locking block is set in the T-slot of the baffle, and the locking handle passes through the swing arm and is screwed into the locking block.

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