Multi-stage conveying mechanism

Abstract

The utility model discloses a multi-stage conveying mechanism which comprises a base, a first transmission part, a first transmission assembly and a second transmission part. The first transmission part is in sliding connection with the base, and the first transmission part is configured to move in the first direction relative to the base. The first transmission assembly comprises a first belt wheel, a second belt wheel and a first transmission belt, the first belt wheel and the second belt wheel are both rotationally connected to the first transmission part and are arranged at intervals in the first direction, and the first belt wheel and the second belt wheel are sleeved with the first transmission belt. The second transmission part is in sliding connection with the first transmission part and is configured to move in the first direction relative to the first transmission part. The first transmission belt is provided with two opposite sides perpendicular to the first direction, one side of the first transmission belt is connected with the base, and the other side of the first transmission belt is connected with the second transmission part. The multi-stage conveying mechanism is simple in structure, the second transmission part and the first transmission part can be started and stopped at the same time, the transmission efficiency is high, the transmission process is stable, and noise is low.

Description

Technical Field

[0001] The utility model relates to the field of transmission mechanisms, and particularly relates to a multi-stage transmission mechanism. Background Art

[0002] In today's highly automated production environment, as an important part of the production line, the performance of the transmission mechanism directly affects the operation efficiency and stability of the entire production system. Traditional transmission mechanisms, such as single-stage conveyor belt systems, although simple in structure and easy to maintain, often seem inadequate when faced with complex and changing production requirements. For example, they have obvious limitations in terms of transmission speed, transmission distance, and adaptability, and are difficult to meet the requirements of high-efficiency and diversified production.

[0003] In order to improve the transmission efficiency and meet complex and changing production requirements, multi-stage transmission mechanisms have gradually become a research hotspot. By stacking multiple conveyor plates and transmission modules, multi-stage transmission mechanisms can achieve the transmission of items at different speeds and in different directions, thus greatly improving the flexibility and efficiency of transmission. However, in related technologies, the structure of multi-stage transmission mechanisms is relatively complex, and the assembly and maintenance processes require professional personnel to operate. This not only increases the production cost, but also may make it difficult to quickly repair the equipment when a failure occurs during use, affecting the production efficiency. Summary of the Utility Model

[0004] The main object of the utility model is to propose a multi-stage transmission mechanism with a simple structure, which can realize the simultaneous start and stop of the second transmission part and the first transmission part, and has a stable transmission process and low noise.

[0005] To achieve the above object, some embodiments of the utility model propose a multi-stage transmission mechanism, including:

[0006] A base,

[0007] A first transmission part, slidably connected to the base and configured to move relative to the base in a first direction;

[0008] A first transmission assembly, including a first pulley, a second pulley and a first transmission belt. Both the first pulley and the second pulley are rotatably connected to the first transmission part and are spaced apart from each other in the first direction. The first transmission belt is sleeved on the first pulley and the second pulley;

[0009] A second transmission part, slidably connected to the first transmission part and configured to move relative to the first transmission part in the first direction;

[0010] Wherein, the first transmission belt has opposite sides perpendicular to the first direction, one side of which is connected to the base and the other side is connected to the second transmission part.

[0011] In some embodiments, the multi-stage transmission mechanism includes a driving part and a second transmission assembly. The second transmission assembly is connected to the base. The second transmission assembly includes a third pulley, a fourth pulley, and a second transmission belt. The third pulley and the fourth pulley are arranged at intervals in the first direction. The second transmission belt is sleeved on the third pulley and the fourth pulley. The first transmission part is connected to the second transmission belt. The driving part drives the third pulley to rotate so that the first transmission part moves in the first direction.

[0012] In some embodiments, the first transmission part includes a first clamping plate and a first transmission part body. The first clamping plate includes a first clamping part and a first protruding part. The first protruding part protrudes from the first transmission part body toward the second transmission belt. The first clamping part is connected to the first protruding part, and the first clamping part clamps one side of the second transmission belt so that the first transmission part moves along with the position where the second transmission belt is connected to the first clamping plate.

[0013] In some embodiments, the axes of the first pulley and the second pulley are both arranged in the vertical direction.

[0014] In some embodiments, the second transmission part includes a second clamping plate and a second transmission part body. The second clamping plate protrudes from the second transmission part body in the vertical direction, and the second clamping plate protrudes from the side of the second transmission part body facing the first transmission belt. The second clamping plate clamps the first transmission belt on the opposite side of the first transmission belt connected to the base so that the second transmission part moves along with the position where the first transmission belt is connected to the second clamping plate.

[0015] In some embodiments, the base includes a third clamping plate and a support platform. The third clamping plate protrudes from the support platform in the vertical direction, and the third clamping plate is located on the side of the support platform facing the first transmission belt. The third clamping plate clamps the first transmission belt on the opposite side of the first transmission belt connected to the second driving part.

[0016] In some embodiments, the third clamping plate includes a third serrated part, and the third serrated part is located on the surface of the third clamping plate that abuts against the first transmission belt.

[0017] In some embodiments, the base includes a sliding part, and the first transmission part includes a first sliding rail. The first sliding rail extends in the first direction. The first sliding rail cooperates with the sliding part so that the first transmission part is adapted to slide relative to the base in the first direction.

[0018] In some embodiments, the first transmission part includes a first mounting seat and a second mounting seat arranged opposite to each other in the first direction. The first pulley is mounted on the first mounting seat, and the second pulley is mounted on the second mounting seat.

[0019] In some embodiments, the first transmission part is provided with a second sliding rail. The second sliding rail extends in the first direction. The second transmission part is connected to the first transmission part through the second sliding rail so as to be adapted to slide relative to the first transmission part in the first direction.

[0020] According to the above embodiments, the beneficial effects of the present utility model are as follows:

[0021] The multi-stage transmission mechanism of the present utility model includes a base, a first transmission part, a first transmission component, and a second transmission part. The first transmission part is slidably connected to the base, and the first transmission part moves relative to the base in a first direction under the drive of a drive part. The second transmission part is slidably connected to the first transmission part, and the second transmission part is connected to the first transmission part through the first transmission component and can start or stop moving simultaneously with the first transmission part. Specifically, the first transmission component includes a first pulley, a second pulley, and a first transmission belt. Both the first pulley and the second pulley are connected to the first transmission part and are arranged at intervals in the first direction. The first transmission belt is sleeved on the first pulley and the second pulley. One side of the first transmission belt close to the second transmission part is fixedly connected to the second transmission part, and the other side of the first transmission belt away from the second transmission part is fixedly connected to the base.

[0022] Denote the position where the second transmission part is connected to the first transmission belt as point a, and the position where the base is fixedly connected to the first transmission belt as point b. When the first transmission part moves in the first direction, the first transmission part drives the first pulley, the second pulley, and the first transmission belt to move in the first direction simultaneously. During this process, point b of the first transmission belt is fixed, so the first transmission belt rolls around the first pulley and the second pulley. Since points a and b are respectively located on opposite sides of the first transmission belt perpendicular to the first direction, point a moves in the first direction, so the second transmission part and point a move in the first direction synchronously. Also, because the entire first transmission belt moves in the first direction along with the first transmission part, the movement of point a is composed of the translational movement of the first transmission belt in the first direction and the rolling of the first transmission belt around the first pulley and the second pulley. Both make point a move in the first direction, so the moving speed of point a is faster than the speed of the first pulley and / or the second pulley, that is, the moving speed of point a is faster than the speed of the first transmission part, that is, the moving speed of the second transmission part is faster than the speed of the first transmission part, thus achieving the effect of multi-stage transmission.

[0023] Moreover, since the operation start or stop of the first transmission component is controlled by the first transmission part, that is, the movement of the second transmission part can start or stop simultaneously with the first transmission part, thereby improving the accuracy, stability, and controllability of the multi-stage transmission mechanism; the multi-stage transmission mechanism of the present utility model adopts a pulley transmission system with belt transmission, with low noise and a stable transmission process. Therefore, the multi-stage transmission mechanism of the present utility model has a simple structure, can realize the simultaneous start and stop of the second transmission part and the first transmission part, and has a stable transmission process and low noise.

[0024] The additional aspects and advantages of the present utility model will be partially given in the following description, partially will become obvious from the following description, or will be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0026] Figure 1 Structural schematic diagram of a multi-stage transmission mechanism observed from a first perspective in an embodiment of the present invention;

[0027] Figure 2 Structural schematic diagram of a multi-stage transmission mechanism observed from a second perspective in an embodiment of the present invention;

[0028] Figure 3 Structural schematic diagram of a multi-stage transmission mechanism observed from a third perspective in an embodiment of the present invention;

[0029] Figure 4 Structural schematic diagram of a multi-stage transmission mechanism observed from a fourth perspective in an embodiment of the present invention;

[0030] Figure 5 Structural schematic diagram of a multi-stage transmission mechanism observed from a fifth perspective in an embodiment of the present invention.

[0031] Explanation of the reference numerals in the drawings:

[0032] Base 100;

[0033] Third clamping plate 110; Third serrated portion 111;

[0034] Slider 120;

[0035] First transmission part 200;

[0036] First clamping plate 210; First clamping portion 211; First protruding portion 212;

[0037] First mounting seat 220;

[0038] Second mounting seat 230;

[0039] Second slide rail 240;

[0040] Second transmission part 300;

[0041] Second clamping plate 310;

[0042] First transmission assembly 400;

[0043] First pulley 410;

[0044] Second pulley 420;

[0045] The first transmission belt 430;

[0046] The second transmission assembly 500;

[0047] The third pulley 510;

[0048] The fourth pulley 520;

[0049] The second transmission belt 530;

[0050] The driving part 600;

[0051] The first direction X.

[0052] The realization, functional features and advantages of the present utility model will be further described with reference to the embodiments and the accompanying drawings. Specific embodiments

[0053] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0054] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present utility model, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0055] In addition, if there are descriptions such as "first", "second", etc. involved in the embodiments of the present utility model, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or", "and / or" or "and / or" appear throughout the text, their meanings include three parallel solutions. Taking "A and / or B" as an example, it includes the A solution, or the B solution, or the solution where A and B are satisfied simultaneously. In addition, the technical solutions between the embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0056] In the related art, the secondary transmission is often achieved by the cooperation of two cylinders or by using a chain drive method. The secondary transmission is achieved by the superposition of two cylinders. The transmission is not stable, and it is difficult to achieve the effect of synchronous operation of the primary transmission and the secondary transmission. In the secondary transmission method using a chain connection, the noise is relatively large during the transmission process.

[0057] Based on this, the present application proposes a multi-stage transmission mechanism, which has a simple structure and can realize the simultaneous start and stop of the second transmission part and the first transmission part. The transmission process is stable and the noise is small. The following will refer to Figures 1 to 5 to describe the multi-stage transmission mechanism according to the embodiments of the present invention. Referring to Figure 1 and Figure 2 , the multi-stage transmission mechanism of the present invention includes a base 100, a first transmission part 200, a first transmission component 400, and a second transmission part 300. The first transmission part 200 is slidably connected to the base 100. Under the drive of a drive part 600, the first transmission part 200 moves relative to the base 100 along a first direction X. The second transmission part 300 is slidably connected to the first transmission part 200, and the second transmission part 300 is connected to the first transmission part 200 through the first transmission component 400, and can start moving or stop simultaneously relative to the first transmission part 200. Specifically, the first transmission component 400 includes a first pulley 410, a second pulley 420, and a first transmission belt 430. Both the first pulley 410 and the second pulley 420 are connected to the first transmission part 200 and are arranged at intervals along the first direction X. The first transmission belt 430 is sleeved on the first pulley 410 and the second pulley 420. One side of the first transmission belt 430 close to the second transmission part 300 is fixedly connected to the second transmission part 300, and the other side of the first transmission belt 430 away from the second transmission part 300 is fixedly connected to the base 100.

[0058] Denote the position where the second transmission part 300 is connected to the first transmission belt 430 as point a, and the position where the base 100 is fixedly connected to the first transmission belt 430 as point b. When the first transmission part 200 moves along the first direction X, the first transmission part 200 drives the first pulley 410, the second pulley 420 and the first transmission belt 430 to move simultaneously in the first direction X. During this process, point b of the first transmission belt 430 is fixed, so the first transmission belt 430 rolls around the first pulley 410 and the second pulley 420. Since points a and b are respectively located on the opposite sides of the first transmission belt 430 perpendicular to the first direction X, point a moves in the first direction X, so the second transmission part 300 and point a move in the first direction X synchronously. Also, because the whole first transmission belt 430 moves along the first direction X with the first transmission part 200, the movement of point a is composed of the translational movement of the first transmission belt 430 along the first direction X and the rolling of the first transmission belt 430 around the first pulley 410 and the second pulley 420. Both make point a move in the first direction X, so the moving speed of point a is faster than the speed of the first pulley 410 and / or the second pulley 420, that is, the moving speed of point a is faster than the speed of the first transmission part 200, that is, the moving speed of the second transmission part 300 is faster than the speed of the first transmission part 200, thus achieving the effect of multi-stage transmission.

[0059] Moreover, since the start or stop of the operation of the first transmission assembly 400 is controlled by the first transmission part 200, that is, the movement of the second transmission part 300 can start or stop simultaneously with the first transmission part 200, thereby improving the accuracy, stability and controllability of the multi-stage transmission mechanism; the multi-stage transmission mechanism of the present utility model adopts a pulley transmission system with belt transmission, with low noise and a stable transmission process. Therefore, the multi-stage transmission mechanism of the present utility model has a simple structure, can realize the simultaneous start and simultaneous stop of the second transmission part 300 and the first transmission part 200, and has a stable transmission process and low noise.

[0060] It can be understood that regarding the speeds of the second transmission part 300 and the first transmission part 200 during the working process, specifically, when the multi-stage transmission mechanism is in an operating state, if the first transmission part 200 moves along the first direction X relative to the base 100 at a speed of 1 m / s, then the second transmission part 300 moves along the first direction X relative to the first transmission part 200 at a speed of 1 m / s, that is, the second transmission part 300 moves along the first direction X relative to the base 100 at a speed of 2 m / s. In other words, the first transmission part 200 can expand and contract relative to the base 100, the second transmission part 300 can expand and contract relative to the first transmission part 200 or the second transmission part 300 can expand and contract relative to the base 100.

[0061] It can be understood that in some embodiments, the first transmission part 200 and the second transmission part 300 both move along the first direction X, that is, during the operation of the multi-stage transmission mechanism, the first transmission part 200 and the second transmission part 300 move in the same direction. This arrangement makes the transmission of the multi-stage transmission mechanism more stable and saves space.

[0062] Of course, it is understandable that, in some embodiments, the speed of the second transmission part 300 relative to the first transmission part 200 is changed by adding a pulley and changing the pulley diameter.

[0063] Reference Figure 1 In some embodiments, specifically, the multi-stage transmission mechanism includes a driving part 600 and a second transmission assembly 500, the second transmission assembly 500 is connected to the base 100, and the second transmission assembly 500 includes a third pulley 510, a fourth pulley 520, and a second transmission belt 530. The third pulley 510 and the fourth pulley 520 are arranged at intervals along the first direction X, the third pulley 510 is installed on the base 100 through a mounting seat, the fourth pulley 520 is installed on the base 100 through a mounting seat, and the second transmission belt 530 is sleeved on the third pulley 510 and the fourth pulley 520. In some embodiments, the driving unit 600 includes a driving motor, and the driving unit 600 drives the third pulley 510 to rotate. The second transmission belt 530 is mounted on the third pulley 510 and the fourth pulley 520, so the rotation of the third pulley 510 drives the second transmission belt 530 to roll around the third pulley 510 and the fourth pulley 520. The first transmission unit 200 is connected to the second transmission belt 530, so the first transmission unit 200 can move along the first direction X.

[0064] The first transmission part 200 moves along the first direction X, so that the first transmission assembly 400 moves along the first direction X, that is, the start and stop of the movement of the first transmission assembly 400 are controlled by the first transmission part 200. The second transmission part 300 is connected to the first transmission assembly 400. When the first transmission assembly 400 starts to move, the second transmission part 300 moves accordingly. When the first transmission part 200 stops moving, the second transmission part 300 stops moving. In this way, the second transmission part 300 can start moving or stop at the same time as the first transmission part 200. Therefore, in the multi-stage transmission mechanism of this scheme, the controllability of the working state of the second transmission part 300 and the first transmission part 200 is stronger, the working condition is more stable, and the movement can be started or stopped at the same time.

[0065] Reference Figure 1, in some embodiments, in order to make the efficiency of the second transmission assembly 500 higher, that is, to reduce the slip of the second transmission belt 530 relative to the third pulley 510 or the fourth pulley 520, the hub of the third pulley 510 is provided with a serrated structure, the hub of the fourth pulley 520 is provided with a serrated structure, and the second transmission belt 530 is sleeved on the serrated structure. Such a setting can improve the friction between the second transmission belt 530 and the third pulley 510 and the friction between the second transmission belt 530 and the fourth pulley 520, so that the transmission efficiency of the second transmission assembly 500 is higher, the movement transmitted from the driving part 600 to the first transmission part 200 is more accurate, and thus the precision of the device is improved.

[0066] Refer to Figure 2 and Figure 3 , in some embodiments, the first transmission part 200 includes a first clamping plate 210 and a first transmission part body. The first clamping plate 210 includes a first clamping part 211 and a first protruding part 212. The first clamping part 211 is used for clamping the second transmission belt 530, and the first protruding part 212 is used for connecting the first clamping part 211 and the first transmission part body, so as to facilitate the setting of the first clamping part 211 and make the connection between the first clamping part 211 and the second transmission belt 530 closer. Specifically, the first protruding part 212 protrudes from the first transmission part body in the direction of the second transmission belt 530. The first clamping part body is connected to the first protruding part 212, and the first clamping part 211 clamps one side of the second transmission belt 530, so that the first transmission part 200 moves along with the position where the second transmission belt 530 is connected to the first clamping plate 210.

[0067] Refer to Figure 2 and Figure 3 , in some embodiments, specifically, the third pulley 510 and the fourth pulley 520 are installed on the base 100. The connection line of the third pulley 510 and the fourth pulley 520 is horizontal, the axes of the third pulley 510 and the fourth pulley 520 are both arranged vertically, the second transmission belt 530 is sleeved on the third pulley 510 and the fourth pulley 520, and the surface of the second transmission belt 530 is arranged vertically. The first transmission part 200 is plate-shaped. A first protruding part 212 is provided on one side of the first transmission part 200 close to the base 100. The first protruding part 212 extends horizontally towards the second transmission belt 530 to the lower side of the second transmission belt 530. The first clamping part 211 is connected to the first protruding part 212, and the first clamping part 211 extends vertically upwards to clamp the second transmission belt 530. Thus, the first transmission part 200 moves along with the movement of the second transmission belt 530.

[0068] In some embodiments, considering that the first transmission part 200 is only provided on one side of the second transmission belt 530, the first clamping part 211 will be blocked by the third pulley 510 or the fourth pulley 520 after moving a certain distance. Therefore, along the length direction of the second transmission belt 530, the width of the first clamping part 211 is relatively short, so that the first transmission part 200 can move a longer distance.

[0069] It can be understood that in order to make the combination of the first clamping part 211 and the second transmission belt 530 more firm, the surface of the first clamping part 211 for clamping the second transmission belt 530 is provided with a first serrated part to increase the friction between the first clamping part 211 and the second transmission belt 530 and prevent the first clamping part 211 and the second transmission belt 530 from slipping.

[0070] Referring to Figure 1 and Figure 4 , in some embodiments, the axes of the first pulley 410 and the second pulley 420 are both arranged in the vertical direction. The first transmission belt 430 is sleeved on the first pulley 410 and the second pulley 420, then the surface of the first transmission belt 430 is arranged in the vertical direction. Due to the action of gravity, compared with the situation where the surface of the first transmission belt 430 is arranged in the horizontal direction when the axes of the first pulley 410 and the second pulley 420 are arranged horizontally, when the surface of the first transmission belt 430 is arranged vertically, the vibration amplitude of the first transmission belt 430 during the transmission process is smaller, making the transmission of the device more stable.

[0071] Referring to Figure 1 and Figure 4 , in some embodiments, the second transmission part 300 includes a second clamping plate 310 and a second transmission part body. The second clamping plate 310 protrudes from the second transmission part body in the vertical direction, and the second clamping plate 310 protrudes from the side of the second transmission part body facing the first transmission belt 430. The second clamping plate 310 clamps the first transmission belt 430 on the opposite side of the first transmission belt 430 connecting to the base 100, so that the second transmission part 300 moves along with the position of the first transmission belt 430 connecting to the second clamping plate 310. Specifically, the second transmission part 300 and the first transmission part 200 are arranged in a stacked manner. The second transmission part body and the first transmission part body are both plate-shaped. The second transmission part body is located above the first transmission part body, and the width of the second transmission part body along the direction perpendicular to the first direction X is slightly wider than that of the first transmission part body. The side of the second transmission belt 530 facing the second transmission part 300 is located below the structure where the second transmission part body protrudes from the first transmission part body in the width direction. A groove is provided in the structure of the second transmission part body at this place. The second clamping plate 310 is embedded in the groove, and the second clamping plate 310 extends downward to clamp the side of the second transmission belt 530 close to the second transmission part 300. Such a setting makes the structure compact and convenient for assembly.

[0072] It can be understood that the second clamping plate 310 can only move on one side of the first transmission assembly 400. That is, after the second clamping plate 310 clamps the first transmission belt 430 and moves a certain distance, the second clamping plate 310 will be blocked by the first pulley 410 or the second pulley 420. Therefore, on the premise of ensuring that the second clamping plate 310 firmly clamps the first transmission belt 430, the narrower the width of the second clamping plate 310 along the first direction X, the better.

[0073] Of course, it can be understood that in order to make the combination of the second clamping plate 310 and the first transmission belt 430 more firm, a second serrated portion is provided at the position where the second clamping plate 310 abuts against the first transmission belt 430, and the firmness of the combination of the second clamping plate 310 and the first transmission belt 430 is ensured by increasing the friction force between the first transmission belt 430 and the second clamping plate 310.

[0074] Of course, it can be understood that in some embodiments, in order to make reasonable use of space, the axes of the first pulley 410 and the second pulley 420 or the third pulley 510 and the fourth pulley 520 can be arranged along the horizontal direction. At this time, the positions of the first clamping plate 210, the second clamping plate 310 and the third clamping plate 110 can be adjusted adaptively, and it only needs to satisfy that the driving part 600 drives the first transmission part 200 to start, the first transmission assembly 400 starts with the first transmission part 200, and the second transmission part 300 starts with the start of the first transmission assembly 400, that is, the first transmission part 200 and the second transmission part 300 start and stop at the same time.

[0075] Of course, the driving part 600 can also actively drive the first transmission assembly 400 to start, so that the second transmission assembly 500 is configured as a driven part, that is, the first transmission part 200 starts with the start of the second transmission part 300 and stops with the stop of the second transmission part 300.

[0076] Of course, it can be understood that in some embodiments, the stacking positions of the first transmission part 200 and the second transmission part 300 are reversed, that is, the first transmission part 200 is located above the second transmission part 300, and the second transmission part 300 is located below the first transmission part 200, and the positions of the first transmission assembly 400 and the second transmission assembly 500 can be adjusted adaptively.

[0077] Refer to Figure 1, in some embodiments, the base 100 includes a third clamping plate 110 and a support platform. The third clamping plate 110 protrudes vertically from the support platform, and the third clamping plate 110 is located on the side of the support platform facing the first transmission belt 430. The third clamping plate 110 clamps the first transmission belt 430 on the opposite side where the first transmission belt 430 is connected to the second driving portion 600. Considering that the entire first transmission assembly 400 moves along the first direction X, the third clamping plate 110 moves in the reverse direction of the first direction X relative to the first transmission assembly 400. After the third clamping plate 110 moves a certain distance in the reverse direction of the first reverse relative to the first transmission assembly 400, it will be blocked by the first pulley 410 or the second pulley 420. Therefore, on the premise of ensuring the firm combination of the third clamping plate 110 and the first transmission belt 430, the narrower the width of the third clamping plate 110 in the first direction X is, the better, so that the first transmission assembly 400 can move a longer distance along the first direction X.

[0078] Referring to Figure 1 and Figure 2 , in some embodiments, in order to strengthen the firmness of the combination of the third clamping plate 110 and the first transmission belt 430, the third clamping plate 110 includes a third serrated portion 111, and the third serrated portion 111 is located on the surface of the third clamping plate 110 that abuts against the first transmission belt 430.

[0079] Referring to Figure 3 and Figure 5 , in some embodiments, the base 100 includes a sliding member 120, and the first transmission portion 200 includes a first sliding rail. The first sliding rail extends along the first direction X, and the first sliding rail cooperates with the sliding member 120 so that the first transmission portion 200 is adapted to slide relative to the base 100 along the first direction X. It can be understood that, in some embodiments, the first sliding member 120 includes a pulley or a slider. When the first transmission portion 200 moves along with the second transmission belt 530, the first sliding rail of the first transmission portion 200 cooperates with the pulley or the slider of the base 100, so that the first transmission portion 200 slides relative to the base 100. Of course, it can be understood that, in some embodiments, the sliding member 120 is provided on the first transmission portion 200, the sliding member 120 includes a pulley or a slider, the first sliding rail is provided on the base 100, and the pulley or the slider of the first transmission portion 200 cooperates with the first sliding rail of the base 100 so that the first transmission portion 200 slides relative to the base 100.

[0080] It can be understood that, in some embodiments, the first transmission portion 200 is in a plate shape, and the length direction of the first transmission portion 200 is parallel to the first direction X. In order to make the movement of the first transmission portion 200 smoother, two first sliding rails are provided on the first transmission portion 200 and arranged in parallel along the first direction X, and the two first sliding rails are arranged side by side along the width direction of the first direction X. Such an arrangement makes the force on the first transmission portion 200 more uniform, thereby making the movement of the first transmission portion 200 smoother.

[0081] Referring to Figure 1 , in some embodiments, the first transmission part 200 includes a first mounting seat 220 and a second mounting seat 230 arranged oppositely along the first direction X. The first pulley 410 is mounted on the first mounting seat 220, and the second pulley 420 is mounted on the second mounting seat 230. Specifically, the first mounting seat 220 has a first mounting position, and the first pulley 410 is mounted at the first mounting position. The first mounting seat 220 protrudes toward the first transmission belt 430 along the width direction of the first transmission part 200. The second mounting seat 230 has a second mounting position, and the second pulley 420 is mounted at the second mounting position. The second mounting seat 230 protrudes toward the first transmission belt 430 along the width direction of the first transmission part 200. The first mounting position faces the second mounting position, so that the first pulley 410 faces the second pulley 420. The first transmission belt 430 is sleeved on the first pulley 410 and the second pulley 420. The second transmission part 300 protrudes from the first transmission part 200 along the width direction. The second clamping plate 310 of the second transmission part 300 is arranged at the position where the second transmission part 300 protrudes from the first transmission part 200. The second clamping plate 310 of the second transmission part 300 protrudes downward to clamp the first transmission belt 430. With such an arrangement, the structure is compact, the space is reasonably utilized, and the first pulley 410 and the second pulley 420 are arranged on the opposite sides of the first transmission part 200 along the first direction X, so that the distance between the first pulley 410 and the second pulley 420 is maximized, and thus the second transmission part 300 can move farther relative to the first transmission part 200 or the base 100.

[0082] Referring to Figure 1 and Figure 2 , in some embodiments, the first transmission part 200 is provided with a second slide rail 240. The second slide rail 240 extends along the first direction X. The second transmission part 300 is connected to the first transmission part 200 through the second slide rail 240 to be adapted to slide relative to the first transmission part 200 along the first direction X. It can be understood that, in some embodiments, the first transmission part 200 is in a plate shape, the second transmission part 300 is in a plate shape, and the length direction of the first transmission part 200 is parallel to the first direction X. The first transmission part 200 includes two second slide rails 240 arranged side by side along the width direction. Both of the two second slide rails 240 extend along the first direction X. The second transmission part 300 is matched with the second slide rail 240 of the first transmission part 200 through a pulley or a slider to be adapted to move relative to the first transmission part 200 along the first direction X or the reverse direction of the first direction X. With such an arrangement, the movement of the second transmission part 300 relative to the first transmission part 200 is smoother, so that the working process of the multi-stage transmission mechanism of the present invention is smoother, with higher stability and higher precision.

[0083] It can be understood that the present solution uses a pulley drive system with a belt drive, and the working process of the entire device is stable, with low noise, and is clean and easy to clean. Of course, it can be understood that in order to meet industrial requirements, a pulley drive system with a chain drive can also be used based on the principle of this solution.

[0084] Of course, it can be understood that in some embodiments, based on the principle of this solution, on the basis of the first transmission part 200 and the second transmission part 300, structures such as a third transmission part and a fourth transmission part are further superimposed, and in cooperation with the principle of the pulley drive system in the above embodiments, to achieve the purpose of multi-stage transmission.

[0085] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention. Any equivalent structural transformation made by using the specification and drawings of the present invention under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A multi-stage transmission mechanism, characterized in that, Comprising: Base The first transmission part is slidably connected to the base and is configured to move relative to the base in a first direction. The first transmission assembly includes a first pulley, a second pulley, and a first transmission belt. The first pulley and the second pulley are both rotatably connected to the first transmission part and are arranged at intervals in the first direction. The first transmission belt is sleeved on the first pulley and the second pulley. The second transmission part is slidably connected to the first transmission part and is configured to move relative to the first transmission part in the first direction. Wherein, the first transmission belt has opposite sides perpendicular to the first direction, one side is connected to the base, and the other side is connected to the second transmission part.

2. The multi-stage transmission mechanism according to claim 1, wherein The multi-stage transmission mechanism includes a driving part and a second transmission assembly. The second transmission assembly is connected to the base. The second transmission assembly includes a third pulley, a fourth pulley, and a second transmission belt. The third pulley and the fourth pulley are arranged at intervals in the first direction. The second transmission belt is sleeved on the third pulley and the fourth pulley. The first transmission part is connected to the second transmission belt. The driving part drives the third pulley to rotate so that the first transmission part moves in the first direction.

3. The multi-stage transfer mechanism according to claim 2, wherein The first transmission part includes a first clamping plate and a first transmission part body. The first clamping plate includes a first clamping part and a first protruding part. The first protruding part protrudes from the first transmission part body towards the second transmission belt. The first clamping part is connected to the first protruding part, and the first clamping part clamps one side of the second transmission belt so that the first transmission part moves along with the position where the second transmission belt is connected to the first clamping plate.

4. The multi-stage transfer mechanism according to claim 1, wherein The axes of the first pulley and the second pulley are both arranged in the vertical direction.

5. The multi-stage transmission mechanism according to claim 4, wherein, The second transmission part includes a second clamping plate and a second transmission part body. The second clamping plate protrudes from the second transmission part body in the vertical direction, and the second clamping plate protrudes from the side of the second transmission part body towards the first transmission belt. The second clamping plate clamps the first transmission belt on the opposite side where the first transmission belt is connected to the base so that the second transmission part moves along with the position where the first transmission belt is connected to the second clamping plate.

6. The multi-stage transfer mechanism according to claim 4, wherein The base includes a third clamping plate and a support platform. The third clamping plate protrudes from the support platform in the vertical direction, and the third clamping plate is located on the side of the support platform towards the first transmission belt. The third clamping plate clamps the first transmission belt on the opposite side where the first transmission belt is connected to the second driving part.

7. The multi-stage transfer mechanism according to claim 6, wherein The third clamping plate includes a third serrated part, and the third serrated part is located on the surface of the third clamping plate in contact with the first transmission belt.

8. The multi-stage transfer mechanism according to claim 1, wherein, The base includes a sliding part, and the first transmission part includes a first sliding rail. The first sliding rail extends in the first direction. The first sliding rail cooperates with the sliding part so that the first transmission part is adapted to slide relative to the base in the first direction.

9. The multi-stage transfer mechanism according to claim 1, wherein The first transmission part includes a first mounting seat and a second mounting seat arranged opposite to each other in the first direction. The first pulley is mounted on the first mounting seat, and the second pulley is mounted on the second mounting seat.

10. The multi-stage transmission mechanism according to claim 1, wherein The first transmission part is provided with a second slide rail, the second slide rail extends along the first direction, and the second transmission part is connected to the first transmission part through the second slide rail so as to be adapted to slide relative to the first transmission part along the first direction.

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