Tension adjusting mechanism

Abstract

The utility model relates to the technical field of belt tensioning, in particular to a tensioning adjusting mechanism which comprises a movable plate and a tensioning adjusting piece, one end of the tensioning adjusting piece is installed on a bearing support, the other end of the tensioning adjusting piece is installed on the movable plate, one end of a transmission mechanism is installed on the movable plate, and the other end of the transmission mechanism is installed on the bearing support. The transmission mechanism is installed at one end of the movable plate and is driven by the movable plate to move downwards. By rotating the adjusting screw rod, the spring is compressed to generate downward force, and the movable plate descends under the action of the spring force, so that the tensioning force is adjusted, and the adjustment is convenient.

Description

Technical Field

[0001] This utility model relates to the field of belt tensioning technology, and in particular to a tensioning adjustment mechanism. Background Technology

[0002] Transmission mechanisms such as belt drives and sprocket drives are prone to loosening after prolonged use. Therefore, a tension adjustment mechanism is needed to adjust them. Utility Model Content

[0003] This utility model solves the problems in related technologies and proposes a tension adjustment mechanism. By rotating the adjustment screw, the spring is compressed to generate a downward force. Under the action of the spring force, the moving plate is lowered, thereby realizing the adjustment of the tension and making the adjustment convenient.

[0004] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: a tension adjustment mechanism, including a movable plate and a tension adjustment component, one end of the tension adjustment component is mounted on a bearing support and the other end is mounted on the movable plate, one end of the transmission mechanism is mounted on the movable plate and the other end is mounted on the bearing support, and the end of the transmission mechanism mounted on the movable plate moves downward under the drive of the movable plate.

[0005] As a preferred embodiment, the movable plate has an oblong hole and screws pass through the oblong hole to fix the movable plate to the tool holder base.

[0006] As a preferred embodiment, the tension adjustment component includes an adjustment screw, one end of which passes through the upper fixing block and is threadedly engaged with the upper fixing block, and the other end of which is fitted with a spring, the other end of which is fitted onto the limiting post of the lower fixing block.

[0007] As a preferred embodiment, the adjusting screw is provided with an adjusting part.

[0008] As a preferred embodiment, the adjusting screw is locked in place by a nut.

[0009] As a preferred embodiment, the system also includes a scale, which is fixed to the bearing support.

[0010] Compared with the prior art, the beneficial effects of this utility model are: by rotating the adjusting screw, the spring is compressed to generate a downward force, and the moving plate is lowered under the action of the spring force, thereby realizing the adjustment of tension, making the adjustment convenient; moreover, by selecting the spring stiffness coefficient and using a scale, the tension force for each adjustment can be determined, thereby achieving tension adjustment more accurately and conveniently. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0012] Figure 2 This is a schematic diagram showing the connection relationship between the tension adjustment mechanism, the motor, and the cutting guide wheel of this utility model;

[0013] Figure 3 This is a structural schematic diagram of the tension adjustment component of this utility model;

[0014] Figure 4 This is a structural schematic diagram of the tension adjustment component of this utility model (with the spring removed).

[0015] In the picture:

[0016] 1. Moving plate, 2. Bearing support, 3. Belt, 4. Drive wheel, 5. Driven wheel, 6. Servo motor, 7. Tension adjustment component, 71. Adjusting screw, 711. Adjustment part, 72. Upper fixing block, 73. Nut, 74. Spring, 75. Lower fixing block, 76. Limiting post, 8. Scale, 9. Cutting guide wheel. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0018] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0019] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0020] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms 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, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0021] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0022] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0023] like Figures 1 to 4 As shown, a tension adjustment mechanism includes a movable plate 1 and a tension adjustment component 7. One end of the tension adjustment component 7 is mounted on a bearing support 2, and the other end is mounted on the movable plate 1. One end of a transmission mechanism is mounted on the movable plate 1, and the other end is mounted on the bearing support 2. The end of the transmission mechanism mounted on the movable plate 1 moves downward under the drive of the movable plate 1. Specifically, as shown... Figure 2 As shown, taking belt drive as an example, the belt drive mechanism includes a driving pulley 4 and a driven pulley 5 connected by a belt 3. The driving pulley 4 is connected to a servo motor 6 and the servo motor 6 is mounted on the moving plate 1 by bolts. The driven pulley 5 is connected to a cutting guide wheel 9 and the cutting guide wheel 9 is mounted on a bearing support 2.

[0024] In one embodiment, the movable plate 1 is a rectangular plate with oblong holes 11 at each of its four corners. Screws 12 pass through the oblong holes 11 to fix the movable plate 1 to the tool holder base. During adjustment, the screws 12 are loosened to move the movable plate 1 downwards. The screws 12 are stepped screws. When the screws 12 are loosened, the movable plate 1 can only move downwards and cannot rotate freely, thus facilitating adjustment.

[0025] In one embodiment, the tension adjusting member 7 includes an adjusting screw 71. One end of the adjusting screw 71 passes through the upper fixing block 72 and is threadedly connected to the upper fixing block 72. A nut is threadedly connected to the adjusting screw 71 above the upper fixing block 72 to facilitate locking the adjusting screw 71 after adjustment. Together with the upper fixing block 72, the adjusting screw 71 is doubly locked. A spring 74 is sleeved on the other end of the adjusting screw 71. The other end of the spring 74 is sleeved on the limiting post 76 of the lower fixing block 75. The middle part of the adjusting screw 71 is made into an adjusting part 711 that is thicker than the screw body, so as to facilitate the adjustment by rotating the adjusting screw 71. During adjustment, the screw 12 is unscrewed. By rotating the adjusting screw 71, the spring 74 is compressed to generate a downward force. Since the screw 12 is loose at this time, the moving plate 1 is lowered under the action of the spring 74, thereby realizing the adjustment of the tension.

[0026] In one embodiment, a scale 8 is also included. The scale 8 is fixed on the bearing support 2. The tension can be adjusted intuitively and precisely by using the scale 8 in conjunction with the spring 74 with the corresponding stiffness coefficient.

[0027] The above are preferred embodiments of this utility model. Those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments described above. Any obvious improvements, substitutions or modifications made by those skilled in the art based on this utility model shall fall within the protection scope of this utility model.

Claims

1. A tension adjustment mechanism, characterized in that: It includes a movable plate and a tension adjustment component. One end of the tension adjustment component is mounted on the bearing support and the other end is mounted on the movable plate. One end of the transmission mechanism is mounted on the movable plate and the other end is mounted on the bearing support. The end of the transmission mechanism mounted on the movable plate moves downward under the drive of the movable plate.

2. The tension adjustment mechanism according to claim 1, characterized in that: The movable plate has a waist-shaped hole, and screws pass through the waist-shaped hole to fix the movable plate to the tool holder base.

3. The tension adjustment mechanism according to claim 1, characterized in that: The tension adjustment component includes an adjustment screw, one end of which passes through the upper fixing block and is threadedly engaged with the upper fixing block, and the other end of which is fitted with a spring, the other end of which is fitted onto the limiting post of the lower fixing block.

4. The tension adjustment mechanism according to claim 3, characterized in that: The adjusting screw is provided with an adjusting part.

5. The tension adjustment mechanism according to claim 3, characterized in that: The adjusting screw is locked in place by a nut.

6. The tension adjustment mechanism according to claim 3, characterized in that: It also includes a scale, which is fixed to the bearing support.

Images