A small printer synchronous belt tension detection device

Abstract

The utility model discloses a small -size printer synchronous belt tension detection device relates to synchronous belt detection technical field, including base, the upper end fixed work table of base, the upper end of work table is provided with two limit pieces in left and right opposition, the upper end movable of work table is provided with micrometer, the limit piece is two left and right opposition and movable round block, the round block is equipped with with synchronous belt, the axial front side fixed position sensor of round block, the bottom of work table is provided with driving element for driving round block movement. The utility model can accurately control the movement of two round blocks through driving element cooperation position sensor, and the interval is adjusted fast to adapt to synchronous belt, and position sensor guarantees the accuracy and repeatability of round block movement, and micrometer moves perpendicularly, and the pressure data is obtained to the automatic contact of synchronous belt and pressurization, and compared with artificial, can avoid the error of human factor interference, effectively reduces the detection cost, and improves the detection efficiency.

Description

Technical Field

[0001] This utility model relates to the field of synchronous belt detection technology, specifically a device for detecting the tension of a synchronous belt in a small printer. Background Technology

[0002] The function of the timing belt in a small printer is to precisely transmit the power of the motor to components such as the print head or paper transport mechanism, ensuring synchronized movement between these components. This achieves accurate print positioning and paper feeding, guaranteeing the accuracy and clarity of the printed content. Testing its tension is crucial because tension directly affects the transmission performance of the timing belt. Excessive tension can cause the belt to slip, leading to inaccurate movement of the print head or paper, resulting in misaligned or blurry prints, and may also accelerate belt wear. Conversely, excessive tension increases the load on the timing belt and related components, shortening their lifespan and potentially causing damage. Therefore, tension testing is necessary to ensure it is within the appropriate range, guaranteeing normal printer operation and print quality.

[0003] Existing technologies primarily rely on manual inspection of the tension of the synchronous belt in small printers. Methods include observation (checking for looseness, sagging, or wobbling), pressing (using fingers to feel elasticity and deformation), and measurement (using tools such as rulers to measure span and sagging and comparing with standard values) to determine if the tension is appropriate. However, manual inspection is inefficient and lacks accuracy. Therefore, we have improved existing technologies based on actual usage. Utility Model Content

[0004] The purpose of this section is to outline some aspects of the embodiments of this utility model and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of this section, the abstract and the title of this utility model. Such simplifications or omissions shall not be used to limit the scope of this utility model.

[0005] In view of the problems existing in the above and / or prior art, the present invention is proposed.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A small printer timing belt tension detection device includes a base, a worktable fixed to the upper end of the base, two limiting members arranged opposite each other on the upper end of the worktable, a dial indicator movably mounted on the upper end of the worktable, and two left-right opposing and movable circular blocks that are fitted with the timing belt. A position sensor is fixed to the front side of the axis of each circular block. A driving member is provided at the bottom of the worktable to drive the circular blocks to move.

[0008] Furthermore, the upper surface of the base is provided with a handle, the lower end of the base is provided with a self-locking wheel, the upper end of the base is integrally provided with a vertical plate, and the upper end of the base is also fixed with an operation switch.

[0009] Furthermore, a vertical cylinder is fixed to the front side of the upright plate by bolts, and the output end of the vertical cylinder is fixed to a dial indicator via a bracket for driving the dial indicator to rise and fall.

[0010] Furthermore, a servo motor is fixed to the lower surface of the worktable via a mounting base, and a bidirectional lead screw is rotatably mounted on the lower surface of the worktable via a bearing. One end of the bidirectional lead screw is fixed to the output end of the servo motor to drive the bidirectional lead screw to rotate.

[0011] Furthermore, a sliding groove is provided in the upper end of the workbench, and a connecting seat is slidably installed in the sliding groove through a cross slider. The connecting seat is threaded with a two-way lead screw, and the front side of each connecting seat is fixed to the axis of a circular block by a pin.

[0012] Furthermore, each of the circular blocks has a baffle integrally provided on its rear side, and the inner wall of the baffle abuts against the rear side of the timing belt.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. The drive unit, in conjunction with the position sensor, can precisely control the movement of two circular blocks and quickly adjust the spacing to adapt to the synchronous belt, which is much faster than manual adjustment based on experience. At the same time, the position sensor monitors the position of the circular blocks in real time and feeds it back to the control system, ensuring the accuracy and repeatability of the movement of the circular blocks. The dial indicator moves vertically, automatically contacts the synchronous belt to apply pressure and acquire pressure data. The combination of these three elements makes the testing process more standardized and regulated. Compared with manual pressing and observation, it has higher accuracy and can avoid human error, effectively reducing testing costs and improving testing efficiency.

[0015] 2. The two circular blocks can move flexibly through the drive mechanism, and the spacing can be quickly adjusted to adapt to different synchronous belts, thus improving the adaptability to synchronous belts of different specifications.

[0016] Other features and advantages of this application will be set forth in the following description and will be apparent in part from the description or may be learned by practicing the application. The objectives and other advantages of this application may be realized and obtained by means of the structures particularly pointed out in the written description and the accompanying drawings.

[0017] The technical solution of this application will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram from another perspective of the present invention;

[0021] Figure 3 This is a schematic diagram showing the connection between the limiting component and the timing belt of this utility model;

[0022] Figure 4 This utility model Figure 2 Partial schematic diagram;

[0023] In the diagram: 1. Base; 2. Worktable; 3. Limiting component; 31. Circular block; 32. Connecting seat; 33. Baffle; 34. Position sensor; 4. Synchronous belt; 5. Operating switch; 6. Dial indicator; 7. Vertical plate; 8. Vertical cylinder; 9. Driving component; 91. Servo motor; 92. Two-way lead screw; Detailed Implementation

[0024] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0025] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0026] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0027] Furthermore, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0028] Please see Figures 1 to 4 This utility model provides a technical solution: a small printer synchronous belt tension detection device, including a base 1, a worktable 2 fixed to the upper end of the base 1, two limiting members 3 arranged opposite each other on the upper end of the worktable 2, a dial indicator 6 movably mounted on the upper end of the worktable 2, and two left-right opposing and movable circular blocks 31 arranged opposite each other on the limiting members 3. The circular blocks 31 are sleeved with the synchronous belt 4, and a position sensor 34 is fixed to the front side of the axis of the circular blocks 31. A driving member 9 is provided at the bottom of the worktable 2 to drive the circular blocks 31 to move. It should be noted that the position sensor 34 at the axis of the circular blocks 31 monitors the position of the circular blocks 31 in real time and feeds the data back to the control system to ensure the accuracy of the moving distance of the two circular blocks 31, thereby ensuring the consistency of the installation length of the synchronous belt 4 and providing a stable basis for tension detection.

[0029] refer to Figure 1 The base 1 has a handle on its upper surface and a self-locking wheel at its lower end. A vertical plate 7 is integrally formed on the upper end of the base 1, and an operating switch 5 is also fixed to the upper end of the base 1. A vertical cylinder 8 is bolted to the front of the vertical plate 7, and a dial indicator 6 is fixed to the output end of the vertical cylinder 8 via a bracket to drive the dial indicator 6 to move up and down. It should be noted that the vertical cylinder 8, through its vertical extension and retraction, drives the dial indicator 6 to move up and down, achieving contact and separation with the surface of the synchronous belt 4. The dial indicator 6 applies pressure by contacting the upper surface of the synchronous belt 4, and its internal precision mechanical structure converts the minute displacement caused by the pressure into a dial reading or electronic signal output. When the tension of the synchronous belt 4 is different, the amount of displacement produced under the same pressure is different, thus the tension of the synchronous belt 4 can be reflected by the value of the dial indicator 6.

[0030] Generally speaking, the acceptable tension value for the timing belt 4 of a small printer is usually found in practical applications when the dial indicator 6 applies a certain pressure (such as 0.5-1 kgf), and the deformation of the timing belt 4 is within the range of 0.2-0.5 mm.

[0031] The dial indicator 6 is model Mitutoyo 293-250 series: the measuring range is usually 0-10mm, the accuracy can reach 0.001mm, it has high measurement accuracy and stability, the dial diameter is generally 63mm, the reading is clear, and its compact size and good durability are suitable for use in the inspection environment of small printers.

[0032] refer to Figure 2 A servo motor 91 is fixed to the lower surface of the worktable 2 via a mounting base. A bidirectional lead screw 92 is also rotatably mounted on the lower surface of the worktable 2 via a bearing. One end of the bidirectional lead screw 92 is fixed to the output end of the servo motor 91 to drive the bidirectional lead screw 92 to rotate. A sliding groove is provided in the upper end of the worktable 2, and a connecting seat 32 is slidably mounted in the groove via a cross slider. The connecting seat 32 is threaded to the bidirectional lead screw 92, and the front side of each connecting seat 32 is fixed to the axis of a circular block 31 via a pin. It should be noted that by operating the switch 5, the servo motor 91 is started, causing the bidirectional lead screw 92 to rotate. Since the two threads on the bidirectional lead screw 92 rotate in opposite directions, the two opposing connecting seats 32 can move towards or away from each other along the bidirectional lead screw 92. This allows the connecting seats 32 to drive the two circular blocks 31 to flexibly adjust the distance between them, adapting to the installation of synchronous belts 4 of different lengths. The distance between the two circular blocks 31 can be adjusted from 10 to 65 cm.

[0033] refer to Figure 3 Each circular block 31 has a baffle 33 integrally provided on its rear side, and the inner wall of the baffle 33 abuts against the rear side of the synchronous belt 4. It should be noted that the synchronous belt 4 is fitted onto the two circular blocks 31, and the baffle 33 blocks the synchronous belt 4, which can prevent the synchronous belt 4 from moving excessively and falling off, and can make the synchronous belt 4 fit quickly.

[0034] Working principle: In the preparation stage, the synchronous belt 4 to be tested is placed around the two circular blocks 31, and the initial spacing between the two circular blocks 31 and the initial position of the dial indicator 6 are set by the control system.

[0035] Spacing adjustment stage: According to the specifications of synchronous belt 4, the target spacing parameters are input into the control system. Servo motor 91 starts to drive bidirectional lead screw 92 to rotate, and the two circular blocks 31 on the left and right start to move. Position sensor 34 monitors the position of circular block 31 in real time and feeds back data. When the set spacing is reached, servo motor 91 stops and circular block 31 is fixed in the current position.

[0036] Tension detection stage: The vertical cylinder 8 is activated, driving the two dial gauges 6 to move vertically downwards until the dial gauges 6 contact the upper surface of the timing belt 4 and apply pressure. The dial gauges 6 convert the displacement caused by the pressure into a numerical signal and transmit it to the control system. The control system analyzes and processes the data from the dial gauges 6 according to the preset algorithm and standard parameters to calculate the current tension value of the timing belt 4.

[0037] Result Judgment and Output Stage: The control system compares the calculated tension value with the preset acceptable range. If the value is within the range, the tension of the timing belt is deemed acceptable; if it exceeds the range, it is deemed unacceptable. Finally, the control system outputs the test results in a display format, completing the entire testing process.

[0038] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0039] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A small printer synchronous belt tension detection device, comprising a base (1), wherein a worktable (2) is fixed to the upper end of the base (1), characterized in that: The upper end of the workbench (2) is provided with two limiting parts (3) facing each other on the left and right, and the upper end of the workbench (2) is provided with a dial indicator (6). The limiting member (3) consists of two left-right opposing and movable circular blocks (31). The circular blocks (31) are sleeved with the timing belt (4). A position sensor (34) is fixed on the front side of the axis of the circular blocks (31). The bottom of the workbench (2) is provided with a drive unit (9) for driving the circular block (31) to move.

2. The device for detecting the tension of a synchronous belt in a small printer according to claim 1, characterized in that: The upper surface of the base (1) is provided with a handle, the lower end of the base (1) is provided with a self-locking wheel, the upper end of the base (1) is integrally provided with a vertical plate (7), and the upper end of the base (1) is also fixed with an operation switch (5).

3. The device for detecting the tension of a synchronous belt in a small printer according to claim 2, characterized in that: A vertical cylinder (8) is fixed to the front side of the upright plate (7) by bolts. The output end of the vertical cylinder (8) is fixed to a dial indicator (6) by a bracket to drive the dial indicator (6) to rise and fall.

4. The device for detecting the tension of a synchronous belt in a small printer according to claim 1, characterized in that: The lower surface of the worktable (2) is fixed with a servo motor (91) by a mounting base. The lower surface of the worktable (2) is also rotatably provided with a bidirectional lead screw (92) by a bearing. One end of the bidirectional lead screw (92) is fixed to the output end of the servo motor (91) to drive the bidirectional lead screw (92) to rotate.

5. The device for detecting the tension of a synchronous belt in a small printer according to claim 4, characterized in that: The upper end of the workbench (2) is provided with a sliding groove and a connecting seat (32) is slidably installed in the sliding groove by a cross slider. The connecting seat (32) is threaded with a two-way lead screw (92). The front side of each connecting seat (32) is fixed to the axis of a circular block (31) by a pin.

6. A small printer synchronous belt tension detection device according to claim 1 or 5, characterized in that: Each of the circular blocks (31) has a baffle (33) integrally provided on its rear side, and the inner wall of the baffle (33) abuts against the rear side of the synchronous belt (4).

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