Multipurpose cutting machine with replaceable machine head

Abstract

The utility model discloses a multipurpose cutting machine with a replaceable machine head. The multipurpose cutting machine comprises a cutting machine body and the machine head connected with the cutting machine body through a transmission assembly. Wherein the machine head comprises an inner cutter, an outer cutter and sawteeth, the inner cutter and the outer cutter are arranged on the same transmission shaft in a sleeving manner, can rotate reversely and have opposite cutting directions, and the sawteeth are arranged along the peripheries of the edges of the inner cutter and the outer cutter. The metal material cutting device has the advantages that due to the fact that the outer cutter and the inner cutter rotate reversely, different cutting directions are achieved in the cutting process, stress is more stable, and the requirement for stable cutting of metal materials is met; and secondly, the outer cutter and the inner cutter coaxially rotate in different directions due to the arranged transmission mode.

Description

Technical Field

[0001] The utility model relates to the technical field of cutting machines, in particular to a multi-purpose cutting machine with a replaceable head. Background Art

[0002] The cutting principle of the cutting machine is to use an electric drive device to drive the high-speed rotating cutting blade to cut various materials horizontally or vertically. The current cutting machine can replace the cutting head and use it in the fire protection field to cut stones, wood and walls, etc. Most of them are used for cutting concrete and stone, but lack effective cutting of metal materials. Therefore, it cannot meet the scenarios that require stable cutting of metal materials. Utility Model Content

[0003] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a multi-purpose cutting machine with a replaceable head.

[0004] In order to solve the above technical problems, the utility model provides the following technical solutions: a multi-purpose cutting machine with a replaceable head, comprising a cutting machine body and a head connected to the cutting machine body through a transmission assembly; wherein the head comprises an inner knife, an outer knife and saw teeth, the inner knife and the outer knife are arranged on the same transmission shaft and can be reversed with each other, and the two have opposite cutting directions, and the saw teeth are arranged along the edge circumference of the inner knife and the outer knife.

[0005] Preferably, the saw teeth include a vertical bevel, a horizontal bevel and a back surface; the horizontal bevel is located on a side of the vertical bevel that is lower than the side of the back surface, and the bottom of the vertical bevel extends along the cutting direction.

[0006] Preferably, the inner knife and the outer knife are arranged in close contact, the vertical inclined surfaces on the inner knife and the outer knife have opposite inclination directions, and the back surfaces of the two are aligned in the same plane.

[0007] Preferably, the transmission assembly includes an output shaft, an outer transmission shaft and an inner transmission shaft; the inner transmission shaft is mounted on the outer transmission shaft through a bearing sleeve, and the output shaft is driven by the cutting machine body to transmit kinetic energy from the output shaft to the outer transmission shaft and the inner transmission shaft respectively.

[0008] Preferably, the output shaft is provided with a first output tooth and a second output tooth, the outer transmission shaft is provided with an outer tooth, the inner transmission shaft is provided with an inner tooth, the second output tooth and the inner tooth are engaged with each other for transmission, and the first output tooth and the outer tooth are transmitted through transmission teeth.

[0009] Preferably, the inner teeth are fixed to the inner transmission shaft, and the inner transmission shaft is fixed to the inner cutter via an inner fixed disk, so that the rotation of the inner teeth can drive the inner cutter to rotate synchronously.

[0010] Preferably, the outer teeth are fixed to the outer transmission shaft, and the outer transmission shaft is fixed to the outer knife via an outer fixed disk, so that the rotation of the outer teeth can drive the outer knife to rotate synchronously.

[0011] Preferably, the outer teeth and the inner teeth have opposite rotation directions, and the inner knife and the outer knife have opposite rotation directions.

[0012] Preferably, it further comprises a movable cover, wherein the movable cover is sleeved on the inner transmission shaft via a rolling bearing, and the movable cover can be rotated around the inner transmission shaft and then limited by the locking assembly.

[0013] Preferably, the output shaft is connected to the driving output end of the cutting machine body through a rotating wheel and a transmission belt, and can be used for cutting for different purposes by replacing different types of heads connected to the rotating wheel.

[0014] The beneficial effects of the present invention are: first, by setting the mutual reversal between the outer knife and the inner knife, different cutting directions are provided during the cutting process, making the force more stable and meeting the scenario of stable cutting of metal materials; second, the transmission method is set to realize the coaxial rotation of the outer knife and the inner knife in different directions. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a side view of the overall structure of the multi-purpose cutting machine of the present invention;

[0016] Figure 2 This is a schematic diagram of the overall structure of the multi-purpose cutting machine of the present invention from another side;

[0017] Figure 3 This is a partially enlarged structural diagram of the multi-purpose cutting machine of the present invention;

[0018] Figure 4 This is a schematic diagram of the structure of the inner knife in the multi-purpose cutting machine of the utility model;

[0019] Figure 5 This is a schematic structural diagram of the transmission assembly in the multi-purpose cutting machine of the present invention;

[0020] Figure 6 This is a schematic structural diagram of the output shaft in the multi-purpose cutting machine of the present utility model;

[0021] Figure 7 This is a schematic structural diagram of the internal fixed disk in the multi-purpose cutting machine of the present utility model;

[0022] Figure 8 This is a schematic diagram of the structure of the outer fixed disk in the multi-purpose cutting machine of the present invention;

[0023] Figure 9 This is a schematic structural diagram of different machine heads used in the multi-purpose cutting machine of the present invention. DETAILED DESCRIPTION

[0024] To make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The described embodiments are only part of the embodiments of the present invention, not all of the embodiments.

[0025] Example 1

[0026] In order to make the multi-purpose cutting machine meet the scene of stable cutting of metal materials, a multi-purpose cutting machine with replaceable heads is proposed in this embodiment. By using two cutting knives with opposite cutting directions and reversing at the same time, compared with the original single cutting blade head, it can not only achieve metal cutting, but also more stable force. At the same time, the cutting head can also be replaced according to actual needs without affecting the purpose of the original cutting machine.

[0027] Reference Figure 1-8 Schematic diagram, specifically, a multi-purpose cutting machine with replaceable head, including a cutting machine body 100 and a head 300 connected to the cutting machine body 100 through a transmission component 200. It should be noted that the cutting machine body 100 should include all the functions required to be embodied in the prior art, such as a driving motor, power supply, circuit, heat dissipation component, bracket, base, switch, etc. that provide driving force, which do not belong to the technical problems to be solved by this embodiment. It should be understood that as long as they do not belong to the technical problems to be solved by this embodiment, they are all non-essential technical features, which can be referred to the implicit disclosure. Ordinary technicians in this field can fully refer to the prior art for implementation, so they are not described in detail here.

[0028] Furthermore, in this embodiment, the head 300 includes an inner knife 301, an outer knife 302 and a saw tooth 303. The inner knife 301 and the outer knife 302 are mounted on the same transmission shaft 201 and can be reversed with each other. The two have opposite cutting directions, and the saw teeth 303 are arranged along the edge circumference of the inner knife 301 and the outer knife 302.

[0029] The saw teeth 303 include a vertical bevel 303a, a horizontal bevel 303b, and a back surface 303c. The horizontal bevel 303b is located on one side of the vertical bevel 303a and is lower than the back surface 303c. The bottom of the vertical bevel 303a extends along the cutting direction. It should be noted that the vertical bevel 303a determines the cutting direction of the inner blade 301 and the outer blade 302. The inner blade 301 and the outer blade 302 are actually the same blade, but they are aligned in opposite directions, resulting in the vertical bevel 303a being opposite. Therefore, when the inner blade 301 and the outer blade 302 rotate in opposite directions, the cutting direction of the two blades is correct, that is, both blades cut along the inclined direction of the vertical bevel 303a. As a preferred embodiment, when the inner blade 301 and the outer blade 302 are aligned, the back surfaces 303c of the two blades are aligned in the same plane. This ensures that the saw teeth 303 cut symmetrically at the same cutting point, further enhancing its stability.

[0030] Furthermore, in order to realize the rotation of the inner cutter 301 and the outer cutter 302 in opposite directions, the transmission assembly 200 of this embodiment includes an output shaft 202 , an outer transmission shaft 203 and an inner transmission shaft 204 .

[0031] More specifically, the inner transmission shaft 204 is mounted on the outer transmission shaft 203 via a bearing sleeve, and the output shaft 202 is driven by the cutting machine body 100 to transmit kinetic energy from the output shaft 202 to the outer transmission shaft 203 and the inner transmission shaft 204 respectively.

[0032] The output shaft 202 is provided with a first output tooth 202a and a second output tooth 202b, the outer transmission shaft 203 is provided with an outer tooth 203a, and the inner transmission shaft 204 is provided with an inner tooth 204a. The second output tooth 202b and the inner tooth 204a are meshed for transmission, and the first output tooth 202a and the outer tooth 203a are transmitted through the transmission tooth 205.

[0033] The output shaft 202, first output teeth 202a, and second output teeth 202b are fixed and prevent relative rotation, i.e., they rotate synchronously. The outer transmission shaft 203 and outer teeth 203a are fixed and prevent relative rotation, i.e., they rotate synchronously. The inner transmission shaft 204 and inner teeth 204a are fixed and prevent relative rotation, i.e., they also rotate synchronously. However, the inner teeth 204a and outer teeth 203a are mounted in bearings, allowing relative rotation.

[0034] The first output tooth 202a meshes with one side of the transmission tooth 205, and the two rotate in opposite directions. The other side of the transmission tooth 205 meshes with the outer tooth 203a, and the two rotate in opposite directions. That is, the first output tooth 202a and the outer tooth 203a rotate in the same direction.

[0035] The second output teeth 202b are meshed with the inner teeth 204a, and the two rotate in opposite directions. The first output teeth 202a and the second output teeth 202b rotate in the same direction, that is, the first output teeth 202a and the inner teeth 204a rotate in opposite directions, so the outer teeth 203a and the inner teeth 204a rotate in opposite directions.

[0036] Furthermore, the inner teeth 204a are fixed to the inner transmission shaft 204 and cannot rotate. The inner transmission shaft 204 is fixed to the inner cutter 301 via the inner fixing plate 206. The rotation of the inner teeth 204a can drive the inner cutter 301 to rotate synchronously.

[0037] The outer teeth 203a are fixed to the outer transmission shaft 203 and cannot rotate. The outer transmission shaft 203 is fixed to the outer knife 302 via the outer fixing plate 207. The rotation of the outer teeth 203a can drive the outer knife 302 to rotate synchronously.

[0038] Because the outer teeth 203a and the inner teeth 204a have opposite rotation directions, and because the outer teeth 203a and the outer blade 302 rotate synchronously, and the inner teeth 204a and the inner blade 301 rotate synchronously, the inner blade 301 and the outer blade 302 have opposite rotation directions. It should be noted that, in conjunction with the diagram, in this embodiment, the cutting direction of the inner blade 301 is clockwise, that is, the inner blade 301 rotates clockwise, while the corresponding outer blade 302 rotates counterclockwise. As a result, the inner teeth 204a rotate clockwise and the outer teeth 203a rotate counterclockwise. The rotation of the inner teeth 204a and the first output teeth 202a is opposite. Therefore, it is only necessary to adjust the output end of the cutting machine body 100 so that the first output teeth 202a rotate counterclockwise to achieve stable forward and reverse cutting of the inner blade 301 and the outer blade 302 in this embodiment.

[0039] Furthermore, as a preferred solution of this embodiment, the multi-purpose cutting machine with a replaceable head also includes a movable cover 400, which is mounted on the inner transmission shaft 204 through a rolling bearing 401. The movable cover 400 can rotate around the inner transmission shaft 204 and be limited by the locking assembly 402. The movable cover 400 is used to block the debris generated during the cutting process and can be adjusted according to the cutting angle.

[0040] Reference Figure 9 The diagram shows a single-cutting blade head, which can be used to cut common objects such as concrete and stone. For the replaceable head of this embodiment, the output shaft 202 is connected to the drive output end of the cutting machine body 100 through the rotary wheel 208 and the transmission belt 209. By replacing different types of heads 300 connected to the rotary wheel 208, the head 300 can be replaced for cutting for different purposes.

[0041] It should be noted that the above embodiments are intended only to illustrate the technical solutions of the present invention and are not intended to limit the scope of protection of the present invention. Those skilled in the art will appreciate that other variations or modifications can be made based on the above descriptions and ideas. It is not necessary and impossible to enumerate all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the technical solutions of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A multi-purpose cutting machine with a replaceable head, characterized by: It comprises a cutting machine body (100) and a machine head (300) connected to the cutting machine body (100) via a transmission assembly (200); The machine head (300) includes an inner knife (301), an outer knife (302) and saw teeth (303). The inner knife (301) and the outer knife (302) are sleeved on the same transmission shaft (201) and can be reversed with each other, and have opposite cutting directions. The saw teeth (303) are arranged along the circumference of the edges of the inner knife (301) and the outer knife (302).

2. The multi-purpose cutting machine with replaceable heads according to claim 1, characterized in that: The sawtooth (303) comprises a vertical inclined surface (303a), a horizontal inclined surface (303b) and a back surface (303c); The horizontal inclined surface (303b) is located on a side of the vertical inclined surface (303a) that is lower than the side located on the back surface (303c), and the bottom of the vertical inclined surface (303a) extends along the cutting direction.

3. The multi-purpose cutting machine with replaceable heads according to claim 2, characterized in that: The inner knife (301) and the outer knife (302) are arranged in close contact with each other, the vertical inclined surfaces (303a) on the inner knife (301) and the outer knife (302) are inclined in opposite directions, and the back surfaces (303c) of the two are aligned in the same plane.

4. The multi-purpose cutting machine with replaceable heads according to claim 1, characterized in that: The transmission assembly (200) includes an output shaft (202), an outer transmission shaft (203) and an inner transmission shaft (204); The inner transmission shaft (204) is sleeved on the outer transmission shaft (203) via a bearing, and the output shaft (202) is driven by the cutting machine body (100) to transmit kinetic energy from the output shaft (202) to the outer transmission shaft (203) and the inner transmission shaft (204) respectively.

5. The multi-purpose cutting machine with replaceable heads according to claim 4, characterized in that: The output shaft (202) is sleeved with a first output tooth (202a) and a second output tooth (202b), the outer transmission shaft (203) is sleeved with an outer tooth (203a), and the inner transmission shaft (204) is sleeved with an inner tooth (204a); the second output tooth (202b) and the inner tooth (204a) are meshed for transmission, and the first output tooth (202a) and the outer tooth (203a) are transmitted via transmission teeth (205).

6. The multi-purpose cutting machine with replaceable heads according to claim 5, characterized in that: The inner teeth (204a) are fixedly arranged on the inner transmission shaft (204), and the inner transmission shaft (204) is fixed to the inner knife (301) via an inner fixed disk (206). The rotation of the inner teeth (204a) can drive the inner knife (301) to rotate synchronously.

7. The multi-purpose cutting machine with replaceable heads according to claim 5, characterized in that: The outer teeth (203a) are fixedly arranged on the outer transmission shaft (203), and the outer transmission shaft (203) is fixed to the outer knife (302) via an outer fixed disk (207). The rotation of the outer teeth (203a) can drive the outer knife (302) to rotate synchronously.

8. The multi-purpose cutting machine with replaceable heads according to claim 5, characterized in that: The outer teeth (203a) and the inner teeth (204a) have opposite rotation directions, and the inner knife (301) and the outer knife (302) have opposite rotation directions.

9. The multi-purpose cutting machine with replaceable heads according to claim 4, characterized in that: The invention also includes a movable cover (400), wherein the movable cover (400) is sleeved on the inner transmission shaft (204) via a rolling bearing (401), and the movable cover (400) can be rotated around the inner transmission shaft (204) and then limited by a locking assembly (402).

10. The multi-purpose cutting machine with replaceable heads according to claim 4, characterized in that: The output shaft (202) is connected to the driving output end of the cutting machine body (100) through a rotating wheel (208) and a transmission belt (209). By replacing different types of machine heads (300) connected to the rotating wheel (208), cutting for different purposes can be achieved.

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