Cutting machine

Abstract

The utility model relates to a cutting machine which comprises a base and a cutting device arranged on the base. The cutting device comprises a rocker arm, a motor and a saw blade, one end of the rocker arm is rotatably arranged on the base, and the motor and the saw blade are respectively arranged on two sides of the other end of the rocker arm; a gear mounting cavity is formed in the side, facing the saw blade, of the rocker arm, a transmission gear driven by a motor is mounted in the gear mounting cavity, a lock hole is formed in the transmission gear, a transmission shaft is connected to the center of the transmission gear, and the saw blade is detachably mounted on the transmission shaft; a locking mechanism mounting cavity communicating with the gear mounting cavity is formed in the side, back on to the saw blade, of the rocker arm, and a straight rod type pressing locking mechanism is arranged in the locking mechanism mounting cavity. According to the cutting machine, the straight rod type pressing locking mechanism can be inserted into the lock hole under the pressing of external force so as to lock the transmission gear, so that the saw blade can be conveniently detached from the transmission shaft or installed on the transmission shaft, and the saw blade can be separated from the lock hole according to elastic reset when the external force is relieved so as to loosen the transmission gear.

Description

Technical Field

[0001] The utility model relates to the technical field of cutting instruments, in particular to a cutting machine. Background Art

[0002] At present, the existing cutting machines often need to replace the saw blade. When replacing the saw blade, the nut that locks the saw blade needs to be loosened and then tightened. When the nut is tightened, the main shaft of the cutting machine will rotate together with the nut, resulting in the nut being unable to be loosened or tightened. Usually other tools are required, and the operation is very complicated. Utility Model Content

[0003] The purpose of the present invention is to overcome the above-mentioned deficiencies of the prior art and to provide a cutting machine with a saw blade that is easy to assemble and disassemble.

[0004] The purpose of the utility model is achieved through the following technical solutions:

[0005] A cutting machine comprises a base and a cutting device arranged on the base; the cutting device comprises a rocker arm, a motor and a saw blade, one end of the rocker arm is rotatably arranged on the base, and the motor and the saw blade are respectively arranged on both sides of the other end of the rocker arm; a gear mounting cavity is provided on the side of the rocker arm facing the saw blade, a transmission gear driven by the motor is installed in the gear mounting cavity, a lock hole is provided on the transmission gear, the center of the transmission gear is connected to a transmission shaft, and the saw blade is detachably mounted on the transmission shaft; a locking mechanism mounting cavity is provided on the side of the rocker arm facing away from the saw blade, which is communicated with the gear mounting cavity, and a straight rod type press locking mechanism is provided in the locking mechanism mounting cavity, the straight rod type press locking mechanism can be inserted into the lock hole when pressed by an external force to lock the transmission gear, and can be elastically reset to disengage from the lock hole when the external force is released to release the transmission gear.

[0006] Furthermore, the straight rod type press locking mechanism includes a straight rod type locking pin and a spring. The spring is sleeved on the straight rod type locking pin and the inner end abuts against the cavity wall of the locking mechanism mounting cavity. A through hole is provided in the locking mechanism mounting cavity, and the locking pin can pass through the through hole and form a locking structure with the lock hole provided on the transmission gear.

[0007] Furthermore, the straight rod type locking pin includes a pressing end, and a pressing piece is connected to the pressing end.

[0008] Furthermore, the outer cover of the motor is provided with a casing, and a pressing piece positioning cavity is provided on the casing, and openings are provided at both ends of the pressing piece positioning cavity. A stop step is provided in the pressing piece positioning cavity, and a circle of stop protrusions is provided on the pressing piece. The pressing piece is inserted into the pressing piece positioning cavity and the stop step can cooperate with the stop protrusion.

[0009] Furthermore, the central axis of the pressing member positioning cavity and the center of the through hole are on the same horizontal straight line.

[0010] Furthermore, the central axis of the positioning cavity of the pressing member and the central axis of the straight rod type locking pin are located on the same horizontal straight line.

[0011] Furthermore, inwardly bent support members are provided at the bottom of the four corners of the base, and support feet are inserted at the four corners of the base. Slots and abutment parts are provided on the support feet. The four corners of the base are respectively inserted into the corresponding slots and the bottom ends of the support members are abutted against the abutment parts on the support feet.

[0012] Furthermore, a stop protrusion is provided on the straight rod type locking pin, and the spring abuts against the stop protrusion.

[0013] Furthermore, an outer cover of the gear installation cavity is provided with an end cover, the end cover is fixed to the outer edge of the gear installation cavity by screws, and a through hole for the transmission shaft to pass through is provided on the end cover.

[0014] Furthermore, the cross section of the supporting foot is C-shaped, and the abutting portion is located in the middle of the supporting foot, and slots are provided at both ends of the supporting foot.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] First, a cutting machine in the present invention can be inserted into a lock hole under external force through a straight rod push-locking mechanism to lock the transmission gear, so that the saw blade can be easily removed from the transmission shaft or installed on the transmission shaft. When the external force is released, the saw blade can be elastically reset to disengage from the lock hole and release the transmission gear.

[0017] Secondly, the structural design of the support members with four inwardly bent corners of the base in the present invention increases the contact area between the base and the support portion on the support leg, thereby increasing the force-bearing area of ​​the support leg and thus increasing the service life of the support leg. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional structural schematic diagram of a cutting machine of the present utility model.

[0019] Figure 2 This is a schematic diagram of the partially decomposed structure of a cutting machine of the utility model. Figure 1 .

[0020] Figure 3 yes Figure 2 A partial enlarged view of point A in the middle.

[0021] Figure 4This is a schematic diagram of the partially decomposed structure of a cutting machine of the utility model. Figure 2 .

[0022] Figure 5 This is a schematic diagram of the decomposition structure of a cutting machine of the utility model Figure 1 .

[0023] Figure 6 This is a schematic diagram of the decomposition structure of a cutting machine of the utility model Figure 2 .

[0024] Figure 7 It is a schematic diagram of the three-dimensional structure of the straight rod type locking pin in the utility model.

[0025] Figure 8 It is a schematic diagram of the three-dimensional structure of the supporting foot in the utility model.

[0026] Figure 9 yes Figure 6 A partial enlarged view of point B in the middle. DETAILED DESCRIPTION

[0027] The present invention will be further described in detail below with reference to the embodiments given in the accompanying drawings.

[0028] like Figures 1 to 9 As shown, a cutting machine provided in this embodiment includes a base 1 and a cutting device 2 arranged on the base 1. The cutting device 2 includes a rocker arm 21, a motor 22 and a saw blade 23. One end of the rocker arm 21 is rotatably arranged on the base 1, and the motor 22 and the saw blade 23 are respectively arranged on both sides of the other end of the rocker arm 21. A gear mounting cavity 3 is provided on the side of the rocker arm 21 facing the saw blade 23, and a transmission gear 4 driven by the motor 22 is installed in the gear mounting cavity 3. Specifically, an output 221 is provided on the motor 22, and the output shaft 221 is connected to the transmission gear 4 for transmission. A lock hole 41 is provided on the shaft transmission gear 4. Specifically, there are two lock holes 41 and they are symmetrically arranged with respect to the center of the transmission gear 4. A transmission shaft 5 is connected to the center of the transmission gear 4, and the saw blade 23 is detachably mounted on the transmission shaft 5. A locking mechanism mounting cavity 6 connected to the gear mounting cavity 3 is provided on the side of the rocker arm 21 facing away from the saw blade 23. A straight rod type push locking mechanism 7 is provided in the locking mechanism mounting cavity 6. The straight rod type push locking mechanism 7 can be inserted into the locking hole 41 under the pressure of external force to lock the transmission gear 4, so that the saw blade 23 can be easily removed from the transmission shaft 5 or the saw blade 23 can be installed on the transmission shaft 5. When the external force is released, the saw blade 23 can be disengaged from the locking hole 41 by elastic reset to release the transmission gear 4.

[0029] As described above, the straight-rod-type push-lock mechanism 7 includes a straight-rod-type locking pin 71 and a spring 72. The spring 72 is mounted on the straight-rod-type locking pin 71, and its inner end abuts against the wall of the locking mechanism mounting cavity 6. A through-hole 61 is provided in the locking mechanism mounting cavity 6, through which the straight-rod-type locking pin 71 can pass to form a locking structure with the locking hole 41 provided on the transmission gear 4. Specifically, the structural design of the straight-rod-type locking pin allows the pressing force to be transmitted in a linear manner when the straight-rod-type locking pin 71 is pressed, allowing the straight-rod-type locking pin 71 to pass through the through-hole 61 more smoothly and lock with the locking hole 41 on the transmission gear 4.

[0030] As described above, the straight-rod locking pin 71 includes a pressing end 711, to which a pressing member 73 is connected. A stopper 712 is provided on the straight-rod locking pin 71, and a spring 72 abuts against the stopper 712. This structural design allows the straight-rod locking pin 71 to disengage from the lock hole 41 and release the transmission gear 4 when the external pressing force is released.

[0031] As described above, the motor 22 is covered with a housing 222, which is provided with a pressing member positioning cavity 223. Both ends of the pressing member positioning cavity 223 are provided with openings 224. Stopping steps 225 are provided in the pressing member positioning cavity 221. The pressing member 73 is provided with a circle of stopping protrusions 731. The pressing member 73 is inserted into the pressing member positioning cavity 223, and the stopping steps 225 can stop and cooperate with the stopping protrusions 731. Specifically, the pressing member positioning cavity 223 abuts against the opening end facing the locking mechanism mounting cavity 6.

[0032] As described above, the central axis of the pressing member positioning cavity 223 and the center of the through-hole 61 are aligned horizontally. The central axis of the pressing member positioning cavity 223 and the central axis of the straight-rod locking pin 71 are also aligned horizontally. This structural design allows the force exerted on the pressing member 73 to be transmitted in a linear manner, allowing the straight-rod locking pin 71 to more smoothly pass through the through-hole 61 and lock with the locking hole 41 on the transmission gear 4.

[0033] As described above, inwardly bent support members 10 are provided at the bottom of each of the four corners of the base 1. Support legs 11 are inserted into each of the four corners of the base 1. Support legs 11 are provided with slots 12 and abutment portions 13. The four corners of the base 1 are respectively inserted into corresponding slots 12, and the bottom ends of the support members 10 abut against the abutment portions 13 on the support legs 11. This structural design increases the contact area between the base 1 and the support portions 13 on the support legs 11, thereby increasing the force-bearing area of ​​the support legs 11 and thereby improving the service life of the support legs 11.

[0034] As described above, the outer cover of the gear installation cavity 3 is provided with an end cover 31 , which is fixed to the outer edge of the gear installation cavity 3 by screws, and the end cover 31 is provided with a through hole 32 for the transmission shaft 5 to pass through.

[0035] As described above, the cross section of the supporting leg 11 is C-shaped, and the abutting portion 13 is located in the middle of the supporting leg 11 . The slots 12 are provided at both ends of the supporting leg 11 .

[0036] The above description is only a preferred embodiment of the present invention and should not be used to limit the scope of implementation of the present invention. In other words, simple equivalent changes and modifications made according to the scope of the patent application of the present invention and the content of the utility model description are still within the scope of the present utility model patent.

Claims

1. A cutting machine comprising a base and a cutting device disposed on the base; characterized in that: The cutting device includes a rocker arm, a motor and a saw blade, wherein one end of the rocker arm is rotatably arranged on the base, and the motor and the saw blade are respectively arranged on both sides of the other end of the rocker arm; A gear mounting cavity is provided on the side of the rocker arm facing the saw blade, a transmission gear driven by the motor is installed in the gear mounting cavity, a lock hole is provided on the transmission gear, a transmission shaft is connected to the center of the transmission gear, and the saw blade is detachably mounted on the transmission shaft; A locking mechanism installation cavity connected to the gear installation cavity is provided on the side of the rocker arm facing away from the saw blade. A straight rod type push locking mechanism is provided in the locking mechanism installation cavity. The straight rod type push locking mechanism can be inserted into the lock hole under the pressure of external force to lock the transmission gear, and can be elastically reset to disengage from the lock hole when the external force is released to release the transmission gear.

2. A cutting machine according to claim 1, characterized in that: The straight rod type press locking mechanism includes a straight rod type locking pin and a spring. The spring is sleeved on the straight rod type locking pin and the inner end abuts against the cavity wall of the locking mechanism mounting cavity. A through hole is provided in the locking mechanism mounting cavity. The locking pin can pass through the through hole and form a locking structure with the lock hole provided on the transmission gear.

3. A cutting machine according to claim 2, characterized in that: The straight rod type locking pin comprises a pressing end, and a pressing piece is connected to the pressing end.

4. A cutting machine according to claim 3, characterized in that: The motor outer cover is provided with a casing, a pressing piece positioning cavity is provided on the casing, openings are provided at both ends of the pressing piece positioning cavity, a stop step is provided in the pressing piece positioning cavity, a circle of stop protrusions is provided on the pressing piece, the pressing piece is inserted into the pressing piece positioning cavity and the stop step can cooperate with the stop protrusion.

5. A cutting machine according to claim 4, characterized in that: The central axis of the pressing member positioning cavity and the center of the through hole are on the same horizontal straight line.

6. A cutting machine according to claim 5, characterized in that: The central axis of the positioning cavity of the pressing member and the central axis of the straight rod type locking pin are located in the same horizontal straight line.

7. The cutting machine according to claim 1, characterized in that: The bottom of the four corners of the base are provided with inwardly bent support members, and the four corners of the base are inserted with support feet, and the support feet are provided with slots and abutment parts. The four corners of the base are respectively inserted into the corresponding slots and the bottom ends of the support members are pressed against the abutment parts on the support feet.

8. The cutting machine according to claim 3, characterized in that: A stop bulge is provided on the straight rod type locking pin, and the spring abuts against the stop bulge.

9. The cutting machine according to claim 1, characterized in that: The outer cover of the gear installation cavity is provided with an end cover, and the end cover is fixed to the outer edge of the gear installation cavity by screws, and the end cover is provided with a through hole for the transmission shaft to pass through.

10. The cutting machine according to claim 7, characterized in that: The cross section of the supporting foot is C-shaped, and the abutting portion is located in the middle of the supporting foot. Slots are provided at both ends of the supporting foot.

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