Straight rack type automatic feeding cutting machine

Abstract

The utility model discloses a spur rack type automatic feeding cutting machine which comprises a machine base, a cutting machine body is installed on the machine base in a rotating mode, a spur rack is connected to the cutting machine body, a feeding motor is further installed on the upper surface of the machine base, a small gear is fixedly installed on an output shaft of the feeding motor, and the small gear is connected with the spur rack in a meshed mode. According to the automatic feeding device, the spur rack is driven to move downwards through the rotation of the pinion on the feeding motor, so that the saw blade is driven to cut downwards at a constant speed, the impact on saw teeth when the saw blade is in contact with a workpiece is greatly reduced through the constant-speed downward cutting of the saw blade, the abrasion of the saw blade is also reduced through the constant-speed downward cutting, and the service life of the saw blade is prolonged. Therefore, the service life of the saw blade is greatly prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of cutting machines, in particular to a straight rack type automatic feeding cutting machine. Background Art

[0002] The cutting machines currently used on the market require the operator to manually press down on the handle to drive the saw blade to cut downward. Due to the uncertainty of the pressing speed, the saw blade's teeth are severely impacted when the saw blade first contacts the workpiece. During the cutting process, the uncertainty of the speed increases the wear of the saw blade, thereby reducing the service life of the saw blade.

[0003] Therefore, we propose a straight rack type automatic feeding cutting machine to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide a spur rack type automatic feeding cutting machine to solve the problems raised in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical solution: a spur rack type automatic feeding cutting machine, comprising: a machine base, on which a cutting machine body is rotatably mounted, and a spur rack is connected to the cutting machine body;

[0006] A feed motor is also installed on the upper surface of the machine base, and a pinion is fixedly installed on the output shaft of the feed motor, and the pinion is meshed and connected with a spur rack.

[0007] Preferably, the feed motor is fixedly mounted on a feed motor bracket, the feed motor bracket is fixedly mounted on the upper surface of the machine base, and a pulley for limiting the spur rack is installed on the feed motor bracket.

[0008] Preferably, the cutting machine body includes a handle, on which a fixed connecting strip is fixedly arranged, and the fixed connecting strip is rotatably connected to one end of the fixedly connected spur rack through a moving pin.

[0009] Preferably, a feed switch, a feed speed regulating knob and a start switch are installed on the handle.

[0010] Preferably, the cutting machine body further comprises a main motor and a gearbox, the gearbox is rotatably connected to the machine base via a rotary shaft, and a return spring is provided between the rotary shaft and the machine base.

[0011] Preferably, the output shaft of the main motor is connected to a gearbox, and the gearbox drives the saw blade.

[0012] Preferably, the saw blade is provided with a fixed shield and a movable shield, wherein the fixed shield is fixedly connected to the gearbox, and the movable shield is rotatably connected to the gearbox.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The automatic feeding device drives the spur rack downward by rotating the small gear on the feed motor, thereby driving the saw blade to cut downward at a constant speed. The saw blade cutting downward at a constant speed greatly reduces the impact on the saw teeth when the saw blade just contacts the workpiece, and the constant downward cutting also reduces the wear of the saw blade, thereby greatly increasing the service life of the saw blade. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 It is a side view of the utility model.

[0017] In the figure: 1. machine base; 2. return spring; 3. rotary shaft; 4. main motor; 5. gearbox; 6. handle; 7. feed switch; 8. feed speed knob; 9. start switch; 10. fixed guard; 11. fixed connecting strip; 111. moving pin; 12. movable guard; 13. spur rack; 14. workpiece; 15. pulley; 16. feed motor; 17. clamping device; 18. pulley pin; 19. feed motor bracket; 20. pinion; 21. saw blade. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-2 The utility model provides a technical solution: a straight rack type automatic feeding cutting machine, comprising: a machine base 1, a handle 6, a fixed connecting strip 11, a straight rack 13, a feeding motor 16, a feeding motor bracket 19, a pinion 20 and a saw blade 21;

[0020] The feed motor bracket 19 is fixed on the machine base 1, the feed motor 16 is fixed on the feed motor bracket 19, and the pinion 20 is installed on the feed motor 16 shaft. The feed motor 16 can be a unidirectional motor or a forward and reverse motor. A speed regulating system can be installed between the feed motor 16 and the pinion 20. According to the material or shape of the material to be cut, the feed speed regulating knob is adjusted to select a suitable feed speed;

[0021] A pulley pin 18 is fixedly mounted on the feed motor bracket 19, a pulley 15 is rotatably sleeved on the pulley pin 18, and the back of the spur rack 13 is limitedly and rotatably connected with the pulley 15, so as to control the engagement and separation of the spur rack 13 and the pinion 20;

[0022] The handle 6 is provided with a feed switch 7, a feed speed regulating knob 8 and a start switch 9;

[0023] The fixed connecting strip 11 is fixed on the handle 6, and the front end of the spur rack 13 is rotatably connected to the fixed connecting strip 11 through a moving pin 111;

[0024] The base 1 is rotatably connected to a gearbox 5 via a rotary shaft 3, and a main motor 4 and a handle 6 are mounted on the gearbox 5;

[0025] A return spring 2 is provided between the rotary shaft 3 and the machine base 1, and the return spring 2 is used for the rotary shaft 3 to drive the handle 6 and the main motor 4 to reset;

[0026] The output shaft of the main motor 4 is connected to a gearbox 5, and the gearbox 5 drives and connects the saw blade 21;

[0027] The saw blade 21 is provided with a fixed guard 10 and a movable guard 12, wherein the fixed guard 10 is fixedly connected to the gearbox 5, and the movable guard 12 is rotatably connected to the gearbox 5, and the movable guard 12 is used to protect the saw blade 21 when the machine is stopped;

[0028] The start switch 9 is electrically connected to the main motor 4, and the feed switch 7 is electrically connected to the feed motor 16;

[0029] The automatic feeding device drives the spur rack 13 to move downward by rotating the pinion 20 on the feeding motor 16, thereby driving the saw blade 21 to cut downward at a constant speed. The saw blade 21 cuts downward at a constant speed, which greatly reduces the impact on the saw teeth when the saw blade 21 just contacts the workpiece 14. The constant speed cutting also reduces the wear of the saw blade 21, thereby greatly improving the service life of the saw blade 21.

[0030] The base 1 is provided with a through hole for the spur rack 13 to move, and the upper surface of the base 1 is also provided with a clamping device 17 .

[0031] Working principle: Place the workpiece 14 on the machine base 1 and clamp it with the clamping device 17, press the start switch 9 to start the main motor 4, and drive the saw blade 21 to rotate;

[0032] Start the feed switch 7, the pinion 20 on the feed motor 16 rotates and drives the spur rack 13 downward, and the spur rack 13 pulls the handle 6 downward steadily through the fixed connecting strip 11. When the spur rack 13 descends to a certain position, the saw blade 21 stably contacts the workpiece 14 and starts cutting. When the cutting is completed, turn off the feed motor 16, then turn off the main motor 4, disconnect the connection between the spur rack 13 and the pinion 20, and the saw blade 21 returns to its original position under the action of the return spring 2.

[0033] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. Spur rack automatic feeding cutting machine, including: A machine base (1), on which a cutting machine body is rotatably mounted, characterized in that a spur rack (13) is connected to the cutting machine body; A feeding motor (16) is also installed on the upper surface of the machine base (1), and a pinion gear (20) is fixedly installed on the output shaft of the feeding motor (16), and the pinion gear (20) is meshedly connected to the spur rack (13).

2. The spur rack automatic feeding cutting machine according to claim 1, characterized in that: The feed motor (16) is fixedly mounted on a feed motor bracket (19), and the feed motor bracket (19) is fixedly mounted on the upper surface of the machine base (1). A pulley (15) for limiting the spur rack (13) is mounted on the feed motor bracket (19).

3. The spur rack automatic feeding cutting machine according to claim 1, characterized in that: The cutting machine body comprises a handle (6), on which a fixed connecting bar (11) is fixedly arranged, and the fixed connecting bar (11) is rotatably connected to one end of a fixed connecting spur rack (13) via a moving pin (111).

4. The spur rack automatic feeding cutting machine according to claim 3, characterized in that: A feed switch (7), a feed speed regulating knob (8) and a start switch (9) are installed on the handle (6).

5. The spur rack automatic feeding cutting machine according to claim 4, characterized in that: The cutting machine body also comprises a main motor (4) and a gearbox (5); the gearbox (5) is rotatably connected to the machine base (1) via a rotating shaft (3); a return spring (2) is provided between the rotating shaft (3) and the machine base (1).

6. The spur rack automatic feeding cutting machine according to claim 5, characterized in that: The output shaft of the main motor (4) is connected to a gearbox (5), and the gearbox (5) drives the saw blade (21).

7. The spur rack automatic feeding cutting machine according to claim 6, characterized in that: The saw blade (21) is sleeved with a fixed guard cover (10) and a movable guard cover (12), wherein the fixed guard cover (10) is fixedly connected to the gearbox (5), and the movable guard cover (12) is rotatably connected to the gearbox (5).

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