A working protection device for sawing machine

Abstract

The present invention discloses a working protection device for a wood sawing machine, comprising: a motor is arranged on a fixed frame, and a blade is connected to the motor; a blade protection cover is arranged on the fixed frame, half-wrapping the blade to expose the cutting edge of the blade; the bottom of the movable frame is connected to the fixed frame through a first rotating shaft; a wood cavity with an upper opening is arranged on the movable frame at a position perpendicular to the cutting of the blade, and the wood cavity corresponds to the position opening of the cutting edge of the blade; the upper edge of the wood cavity close to the blade is connected to a cavity cover plate through a second rotating shaft, and a strip-shaped limiting groove is arranged on the upper surface of the cavity cover plate, and a first positioning pin is arranged on the side wall of the blade protection cover. The device can only perform cutting work when the cavity cover plate on the wood cavity is covered, and when working, the cavity cover plate cannot be opened, which effectively prevents objects such as debris from flying out and increases safety; secondly, it is necessary to step on the pedal to unlock each time cutting, which effectively prevents accidental push operation, and at the same time, after pushing the cutting, the movable frame automatically resets, which is convenient to use.

Description

Technical Field

[0001] The invention relates to a protective device for an electric tool, in particular to a working protective device for a wood sawing machine. Background Art

[0002] The existing sawmill blade is directly exposed during operation, and the protective shield cannot completely cover the blade, and the protection level does not meet the GS certification requirements. When the machine starts to cut wood, the blade is sharp and the speed is high, wood chips are easy to fly out, and the safety performance is poor. Summary of the invention

[0003] Purpose of the invention: In order to overcome the shortcomings of the background technology, the present invention discloses a working protection device for a sawmill.

[0004] Technical solution: The sawmill working protection device of the present invention comprises:

[0005] A fixed frame, wherein a motor is provided on the fixed frame, and the motor is connected to a blade;

[0006] A blade cover, which is arranged on the fixed frame and half-wraps the blade to expose the cutting edge of the blade;

[0007] A movable frame, wherein the bottom of the movable frame is connected to the fixed frame via a first rotating shaft, and the movable frame can be pushed with the first rotating shaft as the axial cutting edge of the blade;

[0008] A wood cavity with an opening on the upper side is provided on the movable frame at a position perpendicular to the cutting edge of the blade, and the wood cavity has an opening corresponding to the cutting edge of the blade. When the movable frame is pushed toward the cutting edge of the blade, the blade moves from the opening to the wood cavity;

[0009] The upper edge of the wood cavity near the blade is connected to a cavity cover plate through a second rotating shaft, a strip limit groove is provided on the upper surface of the cavity cover plate, and a first positioning pin is provided on the side wall of the blade cover. When the cavity cover plate covers the wood cavity, the movable frame is pushed toward the cutting edge of the blade, and the positioning pin is stuck in the strip limit groove. When the cavity cover plate is not covered on the wood cavity, the positioning pin is stuck outside the strip limit groove, and the movable frame cannot be pushed toward the cutting edge of the blade.

[0010] Furthermore, a chip outlet is provided at the bottom end of the blade guard.

[0011] Furthermore, a blade side guard plate is provided at the opening position of the wood placement cavity, and a motor shaft groove is provided at a position of the blade side guard plate corresponding to the motor shaft.

[0012] Furthermore, a start lock assembly is provided between the movable frame and the fixed frame;

[0013] The start lock assembly comprises:

[0014] A locking plate, wherein the locking plate is connected to the movable frame via a third rotating shaft, and a plate body of the locking plate is connected to the movable frame via a spring member;

[0015] a second positioning pin, wherein the second positioning pin is fixed on the fixing frame;

[0016] One end of the locking plate is slotted, and when the movable frame is opened relative to the fixed frame, the slot of the locking plate is clamped on the second positioning pin and is compressed by the spring member.

[0017] Furthermore, a pedal is provided at the other end of the locking plate opposite to the slot, which can lift the slotted end of the locking plate.

[0018] Furthermore, a reset assembly is provided between the movable frame and the fixed frame;

[0019] The reset component comprises:

[0020] A compression rod having one end fixed by the fixed frame and extending through the movable frame;

[0021] The pressure rod is sleeved with a compression spring with two ends respectively resting against the fixed frame and the movable frame;

[0022] After the movable frame is pushed toward the fixed frame, it is reset in the opposite direction under the action of the compression spring.

[0023] Furthermore, a handle is provided on the movable frame, and the handle is connected to the movable frame via a fourth rotating shaft. A plurality of angle gears are provided on the movable frame at intervals within the rotation angle of the handle.

[0024] Beneficial effects: Compared with the prior art, the advantages of the present invention are as follows: a protective plate is arranged at the cutting position of the sawmill to form a wood cavity. Cutting can only be carried out when the cavity cover on the wood cavity is closed, and the cavity cover cannot be opened during operation, which effectively prevents debris and other objects from flying out and increases safety in use; secondly, the pedal needs to be stepped on to unlock each time cutting, which effectively prevents accidental pushing operation, and at the same time, the movable frame can automatically reset after pushing the cutting, which is convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the closed structure of the material chamber cover plate of the present invention;

[0026] Figure 2 It is a schematic diagram of the structure of the material chamber cover plate being opened according to the present invention. DETAILED DESCRIPTION

[0027] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0028] like Figure 1 and Figure 2 The sawmill work guard shown comprises:

[0029] A fixed frame 1, wherein a motor is provided on the fixed frame 1, and a blade is connected to the motor;

[0030] A blade cover 2, wherein the blade cover 2 is arranged on the fixing frame 1, half-wrapping the blade to expose the blade cutting edge 6;

[0031] A movable frame 3, wherein the bottom of the movable frame 3 is connected to the fixed frame 1 via a first rotating shaft 301, and the movable frame 3 can be pushed with the first rotating shaft 301 as the axial blade cutting edge 6;

[0032] The movable frame 3 is provided with a wood cavity 4 with an upper opening at a position perpendicular to the cutting edge of the blade. The wood cavity 4 is a U-shaped groove baffle formed by a protective baffle. The wood cavity 4 is opened at a position corresponding to the cutting edge 6 of the blade. When the movable frame 3 is pushed toward the cutting edge 6 of the blade, the blade moves from the opening to the wood cavity 4.

[0033] The upper edge of the wood cavity 4 close to the blade side is connected to a cavity cover 402 through a second rotating shaft 401, and a strip limiting groove 403 is provided on the upper surface of the cavity cover 402, and a first positioning pin 201 is provided on the side wall of the blade cover 2. When the cavity cover 402 covers the wood cavity 4, the movable frame 3 is pushed toward the blade cutting edge 6, and the positioning pin 201 enters from the groove end of the strip limiting groove 403 and slides to the innermost end of the groove, and is stuck in the strip limiting groove 403. When the cavity cover 402 is not covered on the wood cavity 4, the positioning pin 201 is stuck outside the strip limiting groove 403, and the movable frame 3 cannot be pushed toward the blade cutting edge 6.

[0034] The bottom end of the blade guard 2 is provided with a chip outlet 202 , and wood chips generated when the blade cuts the wood block and fly into the blade guard 2 are uniformly discharged through the chip outlet 202 .

[0035] A blade side guard plate 404 is provided at the opening position of the wood cavity 4, and a motor shaft groove 414 is provided on the blade side guard plate 404 corresponding to the position of the motor shaft. When the movable frame 3 is separated from the fixed frame 1, the blade side guard plate 404 blocks the blade cutting edge 6. After the movable frame 3 is pushed toward the fixed frame 1, the blade side guard plate 404 can be inserted into the blade cover 2.

[0036] A start lock assembly is provided between the movable frame 3 and the fixed frame 1;

[0037] The start lock assembly comprises:

[0038] The locking plate 302 is connected to the movable frame 3 through the third rotating shaft 303. At the same time, the plate body of the locking plate 302 is connected to the movable frame 3 through the spring member 304.

[0039] A second positioning pin 305, wherein the second positioning pin 305 is fixed on the fixing frame 1;

[0040] One end of the locking plate 302 is slotted, and when the movable frame 3 is opened relative to the fixed frame 1, the slot of the locking plate 302 is clamped on the second positioning pin 304 and is pressed by the spring member 304;

[0041] The other end of the locking plate 302 opposite to the slot is provided with a pedal 306 for lifting the slotted end of the locking plate 302 .

[0042] When the pedal 306 is not subjected to force, the groove at the lower end of the locking plate 302 under the tension of the spring member 304 is clamped in the second positioning pin 305. When in use, the pedal 306 must be stepped on to lift the clamping groove end of the locking plate 302 to advance cutting.

[0043] A reset component is provided between the movable frame 3 and the fixed frame 1;

[0044] The reset component comprises:

[0045] A pressure rod 101 having one end fixed by the fixed frame 1 and extending through the movable frame 3;

[0046] The compression rod 101 is sleeved with a compression spring 102 with two ends respectively resting against the fixed frame 1 and the movable frame 3;

[0047] After the movable frame 3 is pushed toward the fixed frame 1, it is reset in the reverse direction under the action of the compression spring 102, making the operation more labor-saving.

[0048] The movable frame 3 is provided with a handle 5, and the handle 5 is connected to the movable frame 3 via a fourth rotating shaft 501. On the movable frame 3, a plurality of angle stops 502 are provided at intervals within the rotation angle of the handle 5, so that the height of the handle 5 can be adjusted to accommodate operators of different heights.

Claims

1. A sawmill working protection device, characterized in that: include: A fixed frame (1), wherein a motor is provided on the fixed frame (1), and the motor is connected to a blade; A blade protection cover (2), the blade protection cover (2) being arranged on the fixing frame (1) and half-wrapping the blade to expose the blade cutting edge (6); A movable frame (3), wherein the bottom of the movable frame (3) is connected to the fixed frame (1) via a first rotating shaft (301), and the movable frame (3) can be pushed with the first rotating shaft (301) as the axial blade cutting edge (6); A wood cavity (4) with an upper opening is provided on the movable frame (3) at a position perpendicular to the cutting edge of the blade. The wood cavity (4) is opened at a position corresponding to the cutting edge (6) of the blade. When the movable frame (3) is pushed toward the cutting edge (6) of the blade, the blade moves from the opening to the wood cavity (4). The upper edge of the wood cavity (4) close to the blade is connected to a cavity cover plate (402) via a second rotating shaft (401); a strip-shaped limiting groove (403) is provided on the upper surface of the cavity cover plate (402); a first positioning pin (201) is provided on the side wall of the blade protection cover (2); when the cavity cover plate (402) covers the wood cavity (4), the movable frame (3) is pushed toward the blade cutting edge (6), and the positioning pin (201) is stuck in the strip-shaped limiting groove (403); when the cavity cover plate (402) is not covered on the wood cavity (4), the positioning pin (201) is stuck outside the strip-shaped limiting groove (403), and the movable frame (3) cannot be pushed toward the blade cutting edge (6); The bottom end of the blade protection cover (2) is provided with a chip discharge opening (202); A start lock assembly is provided between the movable frame (3) and the fixed frame (1); The start lock assembly comprises: A locking plate (302), wherein the locking plate (302) is connected to the movable frame (3) via a third rotating shaft (303), and at the same time, a plate body of the locking plate (302) is connected to the movable frame (3) via a spring member (304); A second positioning pin (305), wherein the second positioning pin (305) is fixed on the fixing frame (1); One end of the locking plate (302) is slotted, and when the movable frame (3) is opened relative to the fixed frame (1), the slot of the locking plate (302) is clamped on the second positioning pin (305) and is pressed by the spring member (304); The other end of the locking plate (302) opposite to the slot is provided with a pedal (306) capable of lifting the slotted end of the locking plate (302); A reset component is provided between the movable frame (3) and the fixed frame (1); The reset component comprises: A pressure rod (101) having one end fixed by the fixed frame (1) and extending through the movable frame (3); The pressure rod (101) is sleeved with a pressure spring (102) with two ends respectively resting against the fixed frame (1) and the movable frame (3); After the movable frame (3) is pushed toward the fixed frame (1), it is reset in the opposite direction under the action of the compression spring (102).

2. The sawmill working protection device according to claim 1, characterized in that: A blade side guard plate (404) is provided at the opening position of the wood material placement cavity (4), and a motor shaft groove (414) is provided at a position of the blade side guard plate (404) corresponding to the motor shaft.

3. The sawmill working protection device according to claim 1, characterized in that: The movable frame (3) is provided with a handle (5).

4. The sawmill working protection device according to claim 3, characterized in that: The handle (5) is connected to the movable frame (3) via a fourth rotating shaft (501); and a plurality of angle stops (502) are provided on the movable frame (3) at intervals within the rotation angle of the handle (5).

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