Profile cutting machine with double-belt reduction mechanism

Abstract

The utility model discloses a section bar cutting machine with double-belt speed reduction mechanism, and it drives two groups of belt drive mechanism through motor and exports to cutting piece, and spring type tension adjusting structure is arranged in two belts. The application realizes the adjustment of transmission ratio through two groups of belt drive structure, and in addition, the spring type tension adjusting structure is arranged on the two belt pulleys on the transmission while adjusting for the problem of belt wear, and the belt is self-tensioned under the action of elasticity after the belt grinding, so manual adjustment is not needed, and the practicality is strong.

Description

Technical Field

[0001] This utility model relates to cutting machines, and more particularly to profile cutting machines with a double belt reduction mechanism. Background Technology

[0002] The main function of a cutting machine is to efficiently and precisely cut materials using mechanical or high-energy methods, thereby improving production efficiency, ensuring cutting quality, and reducing labor costs. It is widely used in the processing of metals, non-metals, and composite materials.

[0003] Currently, most cutting machines on the market do not have a speed-changing function. For example, the belt drive device used in a beveling machine disclosed in patent application number CN201710111602.8 uses a single belt for transmission.

[0004] Aside from the inability to adjust speed, we found that after setting up the speed adjustment structure, it is difficult to disassemble and replace the belt and adjust the tension because two pulleys need to be installed on the same shaft. In addition, the belt will wear down during use, and the belt will become loose after wear. Therefore, this application adds an automatic tensioning structure. Utility Model Content

[0005] In view of the problems mentioned in the background art, the technical problem to be solved by this utility model is to provide a profile cutting machine with a double belt reduction mechanism.

[0006] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: A profile cutting machine with a double belt reduction mechanism includes a cutting machine body, on which a drive motor and a cutting blade are mounted. The drive motor and the cutting blade are connected by two sets of belt drive structures. The belt drive mechanism includes: The first pulley is mounted on the shaft of the cutting disc and rotates synchronously with the cutting disc; The second pulley is mounted on the output shaft of the drive motor and rotates synchronously with the drive motor. The drive shaft is rotatably mounted on the body of the cutting machine. The third pulley includes a first pulley fixed to the drive shaft and a second pulley slidably disposed on the drive shaft, with a ring-shaped conical groove formed between the first and second pulleys by opposing inclined surfaces; The first retaining ring is fixed to the drive shaft; The first spring is sleeved on the drive shaft and its two ends abut against the second wheel and the first fixed ring respectively to apply a spring force to the second wheel in the direction of the first wheel; The fourth pulley includes a third pulley fixed to the drive shaft and a fourth pulley slidably disposed on the drive shaft. The third and fourth pulleys form an annular conical groove between them through opposing inclined surfaces. The second retaining ring is fixed to the drive shaft; The second spring is sleeved on the drive shaft and its two ends abut against the fourth wheel and the second fixed ring respectively to apply a spring force to the fourth wheel in the direction of the third wheel; The first transmission belt is sleeved on the first pulley and the third pulley, and its edge is provided with an inclined surface that fits against the side wall of the conical groove. The second transmission belt is fitted onto the second pulley and the fourth pulley, and its edge is provided with an inclined surface that fits against the side wall of the conical groove. The second and fourth discs are provided with keyways and splines between the drive shaft so that both rotate synchronously with the drive shaft. In addition, the first and second drive belts are located inside the conical groove in the initial unworn state.

[0007] Preferably, the cross-sections of the first and second transmission belts are isosceles trapezoids.

[0008] Preferably, the inner walls of the first and second transmission belts are provided with alternating convex strips, and the first and second pulleys are provided with a plurality of grooves corresponding to the convex strips.

[0009] Preferably, the cutting machine body includes a base and a rotating frame rotatably mounted on the base. The rotating frame is equipped with a belt box, and the belt drive structure is located inside the belt box.

[0010] Compared with the prior art, the present invention has the following advantages: The present application realizes the adjustment of the transmission ratio through two sets of belt drive structures. In addition, in order to address the problem of belt wear during adjustment, a spring-type tension adjustment structure is set on the two pulleys on the transmission. After the belt wears off, it will automatically tighten under the action of elasticity, without the need for manual adjustment, which is highly practical. Attached Figure Description

[0011] The present invention will be further described in detail below with reference to the accompanying drawings and preferred embodiments. However, those skilled in the art will understand that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be regarded as a limitation on the scope of the present invention. In addition, unless otherwise specified, the drawings are only schematic representations of the composition or structure of the described objects and may contain exaggerated displays, and the drawings are not necessarily drawn to scale.

[0012] Figure 1 This is a perspective view of the present application; Figure 2 This is a perspective view of the present application (with the belt box cover removed); Figure 3 This is a three-dimensional view of the transmission part; Figure 4 This is an exploded view of the transmission section; In the diagram: 10. Cutting machine body; 101. Base; 102. Tilting frame; 20. Drive motor; 30. Cutting disc; 40. Belt drive structure; 400. Drive shaft; 401. First pulley; 402. Second pulley; 403. Third pulley; 4031. First disc; 4032. Second disc; 404. Fourth pulley; 4041. Third disc; 4042. Fourth disc; 405. First drive belt; 406. Second drive belt; 407. First retaining ring; 408. First spring; 409. Second retaining ring; 410. Second spring. Detailed Implementation

[0013] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are merely descriptive and exemplary and should not be construed as limiting the scope of protection of the present invention.

[0014] It should be noted that similar labels in the following figures indicate similar items; therefore, once an item is defined in one figure, it may not be further defined and explained in subsequent figures. Example

[0015] This embodiment mainly describes the title of the profile cutting machine with a double belt reduction mechanism, as follows: like Figure 1-4 As shown, a profile cutting machine with a double belt reduction mechanism includes a cutting machine body 10, on which a drive motor 20 and a cutting blade 30 are mounted. The drive motor 20 and the cutting blade 30 are connected by two sets of belt drive structures 40. The belt drive mechanism includes: The first pulley 401 is mounted on the rotating shaft of the cutting disc 30 and rotates synchronously with the cutting disc 30; The second pulley 402 is mounted on the output shaft of the drive motor 20 and rotates synchronously with the drive motor 20; The drive shaft 400 is rotatably mounted on the cutting machine body 10; The third pulley 403 includes a first pulley 4031 fixed on the drive shaft 400 and a second pulley 4032 slidably disposed on the drive shaft 400. The first pulley 4031 and the second pulley 4032 form an annular conical groove through opposing inclined surfaces. The first retaining ring 407 is fixed on the drive shaft 400; The first spring 408 is sleeved on the drive shaft 400 and its two ends abut against the second wheel 4032 and the first fixing ring 407 respectively to apply a spring force to the second wheel 4032 in the direction of the first wheel 4031. The fourth pulley 404 includes a third pulley 4041 fixed on the drive shaft 400 and a fourth pulley 4042 slidably disposed on the drive shaft 400. The third pulley 4041 and the fourth pulley 4042 form an annular conical groove between them through opposing inclined surfaces. The second retaining ring 409 is fixed on the drive shaft 400; The second spring 410 is sleeved on the drive shaft 400 and its two ends abut against the fourth wheel 4042 and the second fixed ring 409 respectively to apply a spring force to the fourth wheel 4042 in the direction of the third wheel 4041. The first transmission belt 405 is sleeved on the first pulley 401 and the third pulley 403, and its edge is provided with an inclined surface that fits against the side wall of the conical groove. The second transmission belt 406 is sleeved on the second pulley 402 and the fourth pulley 404, and its edge is provided with an inclined surface that fits against the side wall of the conical groove. The second and fourth wheel disks 4032 and 4042 are equipped with keyways and splines between them and the drive shaft 400, allowing both to rotate synchronously with the drive shaft 400. Additionally, the first and second drive belts 405 and 406 are initially located inside the conical grooves in their unworn state. This design achieves transmission ratio adjustment through two sets of belt drive structures 40. Furthermore, to address belt wear, a spring-type tension adjustment structure is installed on the two pulleys of the drive shaft. After the belts wear down, they automatically tension under the action of elasticity, eliminating the need for manual adjustment and enhancing practicality.

[0016] Preferably, the cross-sections of the first drive belt 405 and the second drive belt 406 are isosceles trapezoids. To increase the contact area, the inclined surfaces of the first drive belt 405 and the second drive belt 406 can be lengthened.

[0017] Preferably, the inner walls of the first drive belt 405 and the second drive belt 406 are provided with alternating raised strips, and the first pulley 401 and the second pulley 402 are provided with a plurality of grooves corresponding one-to-one with the raised strips. The raised strips are used to ensure the positional accuracy of the belts during tension adjustment.

[0018] Preferably, the cutting machine body 10 includes a base 101 and a tilting frame 102 rotatably mounted on the base 101. The tilting frame 102 is equipped with a belt box, and the belt drive structure 40 is disposed inside the belt box. The belt box is used to hide the drive structure inside.

[0019] It should be noted that in this application, speed can be changed by setting different sizes of the pulleys; the speed change mentioned here refers to the adjustment of the transmission ratio.

[0020] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

Claims

1. A profile cutting machine with a double belt reduction mechanism, comprising a cutting machine body, a drive motor and a cutting blade mounted on the cutting machine body, wherein the drive motor and the cutting blade are connected by two sets of belt drive structures, characterized in that, The belt drive mechanism includes: The first pulley is mounted on the shaft of the cutting disc and rotates synchronously with the cutting disc; The second pulley is mounted on the output shaft of the drive motor and rotates synchronously with the drive motor. The drive shaft is rotatably mounted on the body of the cutting machine. The third pulley includes a first pulley fixed to the drive shaft and a second pulley slidably disposed on the drive shaft, with a ring-shaped conical groove formed between the first and second pulleys by opposing inclined surfaces; The first retaining ring is fixed to the drive shaft; The first spring is sleeved on the drive shaft and its two ends abut against the second wheel and the first fixed ring respectively to apply a spring force to the second wheel in the direction of the first wheel; The fourth pulley includes a third pulley fixed to the drive shaft and a fourth pulley slidably disposed on the drive shaft. The third and fourth pulleys form an annular conical groove between them through opposing inclined surfaces. The second retaining ring is fixed to the drive shaft; The second spring is sleeved on the drive shaft and its two ends abut against the fourth wheel and the second fixed ring respectively to apply a spring force to the fourth wheel in the direction of the third wheel; The first transmission belt is sleeved on the first pulley and the third pulley, and its edge is provided with an inclined surface that fits against the side wall of the conical groove. The second transmission belt is fitted onto the second pulley and the fourth pulley, and its edge is provided with an inclined surface that fits against the side wall of the conical groove. The second and fourth discs are provided with keyways and splines between the drive shaft so that both rotate synchronously with the drive shaft. In addition, the first and second drive belts are located inside the conical groove in the initial unworn state.

2. The profile cutting machine with a double belt reduction mechanism according to claim 1, characterized in that, The cross-sections of the first and second drive belts are isosceles trapezoids.

3. The profile cutting machine with a double belt reduction mechanism according to claim 2, characterized in that, The inner walls of the first and second transmission belts are provided with alternating convex strips, and the first and second pulleys are provided with a number of grooves that correspond one-to-one with the convex strips.

4. The profile cutting machine with a double belt reduction mechanism according to claim 1, characterized in that, The cutting machine body includes a base and a rotating frame rotatably mounted on the base. The rotating frame is equipped with a belt box, and the belt drive structure is located inside the belt box.

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