Synchronous belt tensioning structure

Abstract

The utility model relates to the technical field of tablet personal computer equipment, in particular to a synchronous belt tensioning structure which comprises a machine frame, a cross beam is arranged on the machine frame, synchronous belts used for driving the cross beam to move are arranged on the two sides of the machine frame, tensioning devices are arranged on the synchronous belts, and each tensioning device comprises a connecting plate. The connecting plate is provided with two adjusting seats connected with the two free ends of the synchronous belt respectively, the distance between the two adjusting seats can be adjusted, and each adjusting seat is provided with a pressing plate used for pressing the free end of the synchronous belt.

Description

Technical Field

[0001] The utility model relates to the technical field of flatbed machine equipment, in particular to a synchronous belt tensioning structure of a flatbed machine. Background Art

[0002] The flatbed machine is designed and laid out through special software configured in the computer, and the computer automatically transmits the design and layout information to the flatbed machine controller, which then converts this information into a power signal (pulse train) that can drive the servo motor to control the X and Y axis tool movement of the flatbed machine.

[0003] Most of the existing flatbed machines use the translation of the crossbeam when moving along the X-axis, and the movement of the crossbeam is driven by the reciprocating rotation of the synchronous belts on both sides of the frame, and the synchronous belt needs to be kept in a tensioned state by a tensioning structure during use. For example, a Chinese patent (application number: 202022709849X) discloses a synchronous belt tensioning structure and a 3D printer, which is used to tension the synchronous belt, and a driving wheel and a driven wheel are respectively provided at both ends of the synchronous belt. The synchronous belt tensioning structure includes: a fixed frame; a movable frame, the driven wheel is rotatably mounted on the movable frame, and the movable frame and the fixed frame are relatively slidably arranged; a driving assembly, which is transmission-connected to the movable frame, and drives the movable frame to move back and forth relative to the fixed frame, so that the driven wheel moves away from or close to the driving wheel. When the synchronous belt is tensioned by the synchronous belt tensioning structure, the adjustable range is large. Although the above scheme can obtain a synchronous belt with a large adjustment range and can achieve tension, it is necessary to disassemble more parts during disassembly and adjustment, and the entire structure itself has more parts, which will waste more work hours during the tensioning operation, affecting production efficiency. Utility Model Content

[0004] In order to solve the above problems, an embodiment of the utility model provides a synchronous belt tensioning structure which has a simple structure and is easy to install and adjust.

[0005] In order to achieve the above-mentioned purpose, the embodiment of the utility model specifically adopts the following technical scheme: a synchronous belt tensioning structure, including a frame, a crossbeam is arranged on the frame, synchronous belts for driving the crossbeam to move are arranged on both sides of the frame, a tensioning device is arranged on the synchronous belt, and the tensioning device includes a connecting plate, two adjustment seats are arranged on the connecting plate, which are respectively connected to the two free ends of the synchronous belt, and the distance between the two adjustment seats is adjustable, and each of the adjustment seats is provided with a pressure plate for clamping the free end of the synchronous belt.

[0006] As a further improvement of the above technical solution:

[0007] The two adjustment seats each include a base plate slidably connected to the connecting plate, one end of the base plate is provided with a clamping tooth groove for clamping the synchronous belt, the other end is provided with a vertical plate, and a tensioning screw is provided between the two vertical plates.

[0008] The base plate is connected to the connecting plate by bolts. The connecting plate is provided with threaded holes for installing the bolts. The base plate is provided with positioning long grooves corresponding to the positions of the threaded holes.

[0009] The surface of the connecting plate is provided with a clamping groove for adjusting the sliding of the seat.

[0010] A clamping boss for mounting a pressing plate is arranged between the vertical plate and the clamping tooth groove, and the clamping boss is detachably connected to the pressing plate.

[0011] The thickness of the clamping boss is greater than the height of the clamping tooth groove.

[0012] A support seat connected to the cross beam is arranged on the upper part of the connecting plate, and the support seat and the connecting plate are integrally formed.

[0013] The support seat is connected to the end of the cross beam, and the upper part of the support seat is provided with a load-bearing plate connected to the bottom of the cross beam.

[0014] The beneficial effects of the embodiments of the utility model are as follows: 1. The synchronous belt tensioning structure includes a connecting plate, on which an adjustment seat is installed to connect the two free ends of the synchronous belt. After the distance between the two adjustment seats is adjusted, the synchronous belt can be tensioned. The structure is simple and easy to operate.

[0015] 2. A pressure plate is provided on the connecting seat, which can strengthen the connection strength between the synchronous belt and the adjusting seat and has a simple structure, making it easy to install and maintain.

[0016] 3. A support seat is provided on the upper part of the connecting plate, through which the crossbeam can be fixed and installed, combining the tensioning of the synchronous belt and the installation of the crossbeam, simplifying the structure and saving installation space. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 for Figure 1 A schematic diagram of the enlarged structure at A in the middle;

[0019] Figure 3 This is a schematic diagram of the installation structure of the connecting plate in the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the support seat and the connecting plate in the utility model;

[0021] Figure 5 It is a structural schematic diagram of the adjustment seat in the utility model.

[0022] In the figure: 1. frame; 2. crossbeam; 3. connecting plate; 4. adjustment seat; 5. pressure plate; 6. base plate; 7. snap-in tooth groove; 8. vertical plate; 9. tensioning screw; 10. snap-in boss; 11. threaded hole; 12. positioning long groove; 13. support seat; 14. load-bearing plate; 15. slot. DETAILED DESCRIPTION

[0023] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0024] like Figure 1 As shown, the synchronous belt tensioning structure of this embodiment includes a frame 1, a crossbeam 2 is provided above the frame 1, synchronous belts for driving the crossbeam 2 to move are provided on both sides of the frame 1, and a tensioning device is provided on the synchronous belt. The tensioning device includes a connecting plate 3, and two adjusting seats 4 are provided on the connecting plate 3, which are respectively connected to the two free ends of the synchronous belt. The distance between the two adjusting seats 4 is adjustable, and each adjusting seat 4 is provided with a pressing plate 5 for pressing the free end of the synchronous belt.

[0025] The two adjustment seats 4 each include a base plate 6 slidably connected to the connecting plate 3, one end of the base plate 6 is provided with a clamping tooth groove 7 for clamping the synchronous belt, the other end is provided with a vertical plate 8, and a tensioning screw 9 is provided between the two vertical plates 8. The tensioning screw 9 can be used to adjust the distance between the two adjustment seats, thereby achieving the tensioning operation of the synchronous belt.

[0026] The base plate 6 is detachably connected to the connecting plate 3 by bolts. The connecting plate 3 is provided with threaded holes 11 for installing the bolts, and the base plate 6 is provided with positioning long grooves 12 corresponding to the positions of the threaded holes 11 .

[0027] A slot 15 for sliding the adjustment seat 4 is formed on the surface of the connection plate 3 .

[0028] A clamping boss 10 for installing the pressure plate 5 is arranged between the vertical plate 8 and the clamping tooth groove 7. The thickness of the clamping boss 10 is greater than the height of the clamping tooth groove 7. A threaded hole is opened on the clamping boss 10. The clamping boss 10 and the pressure plate 5 are detachably connected by bolts. One end of the pressure plate 5 is connected to the clamping boss 10, and the other end is pressed on the free end of the synchronous belt, so that the free end of the synchronous belt can be pressed and connected with the adjustment seat 4.

[0029] A support seat 13 connected to the cross beam 2 is provided on the upper part of the connecting plate 3. The support seat 13 and the connecting plate 3 are integrally formed. The support seat 13 is connected to the end of the cross beam 2. A load-bearing plate 14 connected to the bottom of the cross beam 2 is provided on the upper part of the support seat 13. A guide block is provided on the inner side wall of the lower part. A guide groove is opened on the guide block. A guide rail used in conjunction with the groove is installed on the side wall of the frame 1. Through the integrated design of the support seat 13 and the connecting plate 3, the cross beam 2 can be installed on the tensioning mechanism, which simplifies the installation structure and saves installation space.

[0030] The working principle / assembly process of this solution: a slot 15 is opened on the lower surface of the connecting plate 3, and two adjustment seats 4 are placed in the slot 15, and the two vertical plates are symmetrically distributed. The adjustment seat 4 is connected to the connecting plate 3 by bolts, and then the two free ends of the synchronous belt are respectively connected to the adjustment seat 4 through the pressure plate 15, and a tensioning screw slot is opened on one of the vertical plates 8, and a tensioning threaded hole corresponding to the position of the tensioning screw slot is opened on the other vertical plate 8, and the tensioning screw 9 is inserted into the tensioning threaded hole from the tensioning screw slot. The tensioning screw adopts a hexagon socket screw. After turning the tensioning screw, the synchronous belt is tensioned. After tensioning, tighten the bolt to fix the adjustment seat 4. When the tension needs to be adjusted, you only need to loosen the bolt (no need to disassemble), and then turn the tensioning screw 9 forward or reverse, and then fix the adjustment seat with the bolt.

[0031] It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0032] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0033] The term "comprise" or any other similar term is intended to cover a non-exclusive inclusion, such that a process, article, or apparatus / device that includes a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, article, or apparatus / device.

[0034] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A synchronous belt tensioning structure, comprising a frame (1), a crossbeam (2) being arranged on the frame (1), synchronous belts for driving the crossbeam (2) to move being arranged on both sides of the frame (1), a tensioning device being arranged on the synchronous belt, characterized in that: The tensioning device comprises a connecting plate (3), on which two adjusting seats (4) are respectively connected to two free ends of the synchronous belt, the distance between the two adjusting seats (4) is adjustable, and each of the adjusting seats (4) is provided with a pressing plate (5) for pressing the free end of the synchronous belt.

2. The synchronous belt tensioning structure according to claim 1, characterized in that: The two adjustment seats (4) each comprise a base plate (6) slidably connected to the connecting plate (3); one end of the base plate (6) is provided with a clamping tooth groove (7) for clamping a synchronous belt; the other end is provided with a vertical plate (8); and a tensioning screw (9) is provided between the two vertical plates (8).

3. The synchronous belt tensioning structure according to claim 2, characterized in that: The base plate (6) is connected to the connecting plate (3) by means of bolts; the connecting plate (3) is provided with a threaded hole (11) for installing the bolt; and the base plate (6) is provided with a positioning long groove (12) corresponding to the position of the threaded hole (11).

4. The synchronous belt tensioning structure according to claim 2, characterized in that: The surface of the connecting plate (3) is provided with a slot (15) for mounting the adjusting seat (4) for sliding.

5. The synchronous belt tensioning structure according to claim 2, characterized in that: A clamping boss (10) for mounting the pressing plate (5) is provided between the vertical plate (8) and the clamping tooth groove (7), and the clamping boss (10) is detachably connected to the pressing plate (5).

6. The synchronous belt tensioning structure according to claim 5, characterized in that: The thickness of the clamping boss (10) is greater than the height of the clamping tooth groove (7).

7. The synchronous belt tensioning structure according to claim 1, characterized in that: A support seat (13) connected to the crossbeam (2) is provided on the upper part of the connecting plate (3); the support seat (13) and the connecting plate (3) are integrally formed.

8. The synchronous belt tensioning structure according to claim 7, characterized in that: The support seat (13) is connected to the end of the cross beam (2), and a load-bearing plate (14) connected to the bottom of the cross beam (2) is provided on the upper part of the support seat (13).

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