Pen falling clamp with height capable of being adjusted at will

Abstract

The utility model discloses a pen dropping clamp capable of freely adjusting the height, which comprises a support component, an upper cover plate and a bottom plate, the support component comprises a pair of support section bars, an upper cover plate and a bottom plate, the support section bars are vertically arranged on the bottom plate at intervals, and the upper cover plate and the bottom plate are horizontally arranged; the regulation and control assembly comprises a controllable bearing, a mounting seat, a sliding rod and a movable plate, the mounting seat is arranged on the upper cover plate, a mounting hole is formed in the connecting position of the upper cover plate and the mounting seat, a scale position indicating block moving in the vertical direction is arranged on the movable plate, and the scale indicating block is matched with the controllable bearing to move the test height to the initial position before testing. According to the pen dropping clamp capable of adjusting the height at will, a plurality of structures are combined into a whole, the test height controllable clamp can be rapidly lifted to reach any test height, and the scale indication block can return to the initial position through the scale marks at the starting point of the manual test pen. Glass with different thicknesses is ensured to start testing at the initial position of the graduated scale, and the testing accuracy is ensured.

Description

Technical Field

[0001] This utility model relates to the field of glass hardness testing technology, specifically to a pen holder with adjustable height. Background Technology

[0002] Existing technology provides a manual fitting fixture, which relies on manually adjusting the height and position of the test pen tip relative to the glass for testing.

[0003] The operating steps are as follows: Place the glass on the platform below, and manually insert the movable plate into the slots on both sides to adjust the pen's test height. The movable plate is fixed by the height slot plate, which controls the fixed height position. The drawback of the existing technology is that, for example, if the original glass thickness is 2.0mm, the distance between the test pen and the glass after adjustment to the test height is 150mm. When the glass thickness is changed to 1.0mm, the distance between the test pen and the glass becomes 151mm. Because the height position of each slot on the slot plate is fixed (slot spacing is 5.0mm), it is impossible to adjust back to the 150mm test height. When the glass thickness changes, if the change in test height is less than the distance between adjacent slots, accurate measurement cannot be achieved. Utility Model Content

[0004] Therefore, it is necessary to propose a pen holder with adjustable height to address the problem that cannot be accurately measured when the change in test height is less than the distance between adjacent slots.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] Based on existing technology, the fixture is designed as an adjustable fixture to meet different height requirements according to testing needs, thus satisfying the requirements for test heights with small spacing.

[0007] An adjustable pen holder, comprising:

[0008] The support assembly includes a pair of vertically arranged support profiles and a horizontally arranged upper cover plate and a bottom plate. The support profiles are spaced apart on the bottom plate, and the upper cover plate is disposed on the support profiles. The support profiles are provided with scale markings.

[0009] The control assembly includes a controllable bearing, a mounting base, a sliding rod, and a movable plate. The mounting base is disposed on the upper cover plate, and the upper cover plate has a mounting hole at the position where it connects with the mounting base. The sliding rod passes through the mounting hole and can slide relative to the mounting hole. The lower end of the sliding rod is connected to the movable plate. The test height can be adjusted to any position by tightening or loosening the controllable bearing and the sliding rod.

[0010] The movable plate is equipped with a scale position indicator block that moves vertically. The scale indicator block works with the controllable bearing to move the test height to the initial position before the test.

[0011] In some embodiments, the sidewall of the supporting profile is provided with a slide rail, and both ends of the movable plate are provided with protrusions, which are slidably embedded in the slide rail.

[0012] In some embodiments, the control assembly further includes a sliding rod locking ring that secures the sliding rod to the movable plate.

[0013] In some embodiments, the upper cover plate is locked to the upper end of the support profile using screws, and the lower end of the support profile is fixed to the base plate using screws.

[0014] In some embodiments, a scale is provided on the inner side of the support profile, and the initial position is the 0 mark position of the scale.

[0015] In some embodiments, the smallest division of the scale is 1 mm.

[0016] In some embodiments, the scale indicator block is movably disposed on the movable plate, the scale indicator block is capable of moving up and down, and the scale indicator block is capable of moving within a unit scale of the scale.

[0017] In some embodiments, the controllable bearing is rotatably mounted on the side of the mounting base and is interference-fitted or clearance-fitted with the sliding rod.

[0018] In some embodiments, when the controllable bearing and the sliding rod are in an interference fit, the movable plate is fixed at the height to be tested; when the controllable bearing and the sliding rod are in a clearance fit, the movable plate can move from the height to be tested to any position.

[0019] In some embodiments, a pen holder is also provided, which is located on the movable plate.

[0020] This invention proposes an adjustable pen holder that combines multiple structures into one unit, enabling a quickly adjustable and controllable testing height. The starting point of the manual testing pen can be returned to the initial position via a scale marking, ensuring that testing of glass of different thicknesses begins at the initial position on the scale, thus guaranteeing the accuracy of the height. Attached Figure Description

[0021] in:

[0022] Figure 1 This is a front view of a pen holder with adjustable height as described in an embodiment of this utility model;

[0023] Figure 2 This is a three-dimensional structural diagram of a pen holder with adjustable height as described in an embodiment of this utility model;

[0024] Figure 3 yes Figure 2 Enlarged view at point A1;

[0025] Figure 4 This is an exploded view of an adjustable-height pen holder according to an embodiment of the present invention;

[0026] Figure 5 yes Figure 2 Enlarged view at point A2;

[0027] Figure 6 yes Figure 2 Enlarged view at point A3.

[0028] The markings in the attached diagram are described below:

[0029] 1. Support assembly; 11. Support profile; 111. Slide rail; 112. Scale; 12. Top cover plate; 121. Mounting hole; 13. Base plate; 2. Adjustment assembly; 21. Controllable bearing; 22. Mounting seat; 23. Sliding rod; 24. Movable plate; 241. Protrusion; 242. Lever; 243. Pen stop block; 244. Scale indicator block; 245. Spring; 25. Sliding rod locking ring; 26. Pen holder. Detailed Implementation

[0030] To facilitate understanding of this utility model, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as "connected" to another element, it can be directly on the other element, or one or more intermediate elements may exist between them. The terms "upper," "lower," "left," "right," "upper end," "lower end," "top," and "bottom," etc., used in this specification indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0031] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention.

[0032] To address the shortcomings of existing technologies, the following will be combined with the appendix. Figures 1 to 6 This invention provides a detailed description of an adjustable pen holder according to an embodiment of the present invention.

[0033] To address the issue that existing technologies, where the height of each slot in the card slot plate is fixed (slot spacing is 5.0mm), cannot accurately measure height variations smaller than the distance between adjacent slots, the following will combine [the following text]... Figures 1 to 6 This invention provides a detailed description of an adjustable pen holder according to an embodiment of the present invention.

[0034] Please see Figure 1 , Figure 1 This is a front view of a pen holder with adjustable height as described in an embodiment of this utility model.

[0035] An adjustable pen holder, comprising:

[0036] The support assembly 1 includes a pair of vertically arranged support profiles 11 and a horizontally arranged upper cover plate 12 and a bottom plate 13. The support profiles 11 are spaced apart on the bottom plate 13, and the upper cover plate 12 is arranged on the support profiles 11. The support profiles 11 are provided with scale markings.

[0037] The control assembly 2 includes a controllable bearing 21, a mounting base 22, a sliding rod 23, and a movable plate 24. The mounting base 22 is disposed on the upper cover plate 12. The upper cover plate 12 is provided with a mounting hole 121 at the position where it connects to the mounting base 22. The sliding rod 23 passes through the mounting hole 121 and can slide relative to the mounting hole 121. The lower end of the sliding rod 23 is connected to the movable plate 24. The test height can be adjusted to any position by tightening or loosening the controllable bearing 21 and the sliding rod 23 using an adjusting screw.

[0038] The movable plate 24 is provided with a scale indicator block 244 that moves vertically. The scale indicator block 244, in conjunction with the controllable bearing 21, moves the test height to the initial position before the test.

[0039] Specifically, the base plate 13, the top cover plate 12, and the supporting profile 11 serve as a supporting frame for the entire fixture, and the base plate 13 is also used to place the test glass.

[0040] A mounting hole 121 is provided on the upper cover plate 12. The sliding rod 23 passes through the mounting hole 121. The controllable bearing 21 is installed on the side of the mounting base 22 and connected to the mounting hole 121 to control the sliding rod 23. The sliding rod 23 can move up and down in the mounting hole 121. The bottom end of the sliding rod 23 is connected to the movable plate 24. When the sliding rod 23 drives the movable plate 24 to the height to be tested, for example, the test height is 15mm, after reaching the test height, the controllable bearing 21 is tightened to fix the sliding rod 23, and then the movable plate 24 is fixed at the test height. The test pen is released, so that the test pen falls from the position of the movable plate 24 at a height of 15mm and hits the glass to be tested.

[0041] When the glass needs to be tested at another height after the current test is completed, for example, if the test height is 10mm, loosen the controllable bearing 21, manually move the sliding rod 23 downwards so that the scale indicator block 244 on the movable plate 24 points to the 10mm position in the scale marking, tighten the controllable bearing 21, fix the sliding rod 23, and then fix the movable plate 24 at the height to be tested, release the test pen so that the test pen falls from the position of the movable plate 24 at a height of 10mm and hits the glass to be tested.

[0042] When the current test is completed and another piece of glass needs to be tested, since the two pieces of glass have different thicknesses, for example, the thickness of the previous piece of glass is 2.0mm and the thickness of the glass is 1.0mm, the sliding rod 23 needs to be manually moved down to the glass position, and the scale indicator block 244 needs to be manually moved. Then the sliding rod 23 needs to be moved up so that the movable plate 24 reaches the height to be tested. Release the test pen so that the test pen falls and hits the glass to be tested. The test result is determined according to the degree of damage to the glass.

[0043] The installation method for this device is as follows:

[0044] 1. The base plate 13, the supporting profile 11 and the upper cover plate 12 are fixedly connected to form the supporting assembly 1;

[0045] 2. Install the mounting base 22, bearing handle 21, sliding rod 23 and movable plate 24 onto the support assembly 1;

[0046] 3. Install the scale indicator block 244 on the movable plate 24;

[0047] 4. The sliding rod 23 drives the movable plate 24 to move up and down to the required test height, and then the controllable bearing 21 fixes the sliding rod 23.

[0048] Test steps:

[0049] Place the glass on the base plate 13, and move the test pen to contact the glass by moving the movable plate 24 through the controllable bearing 21. Move the arrow of the scale indicator block 244 to the test height corresponding to the scale mark and lock the scale indicator block 244 with screws. The test pen can be moved or fixed by the controllable bearing 21, and the scale mark provides the test requirements for the hardness of the glass at any height.

[0050] Beneficial effects: This utility model is designed as an adjustable pen holder based on existing technology and testing needs. It adopts multiple structures combined into one, so that the controllable test height holder can be quickly raised and lowered to any test height. The starting point of the manual test pen can be returned to the initial position of the scale indicator block 244 through the scale mark, ensuring that the test starts at the initial position of the scale for glass of different thicknesses, thus ensuring the accuracy of the height.

[0051] Please see Figure 2 and Figure 3 , Figure 2 This is a three-dimensional structural diagram of a pen holder with adjustable height as described in an embodiment of this utility model; Figure 3 yes Figure 2 Enlarged view of section A1.

[0052] In one embodiment, the sidewall of the supporting profile 11 is provided with a slide rail 111, and the two ends of the movable plate 24 are provided with protrusions 241, which are slidably embedded in the slide rail 111.

[0053] Specifically, when installing the movable plate 24, the protrusions 241 at both ends need to be embedded in the slide 111, and the protrusions 241 at both ends of the movable plate 24 can move up and down in the slide 111 by moving the slide rod up and down.

[0054] The movable plate 24 is embedded in the slide rails 111 at both ends. When the movable plate 24 moves up and down, it is more stable, avoids shaking, and reduces the error generated by the test. The up and down sliding movement makes the change of test height linear. Compared with the stepped change in the prior art, it is more convenient to adjust the test height and the test accuracy is higher. It is beneficial to overcome the fact that in the prior art, the height position of each slot of the slot plate is fixed (the slot spacing is 5.0MM), and the test accuracy cannot be smaller than the slot spacing.

[0055] Please see Figure 3 , Figure 4 and Figure 5 , Figure 4 This is an exploded view of an adjustable-height pen holder according to an embodiment of the present invention; Figure 5 yes Figure 2 Enlarged view at point A2.

[0056] In one embodiment, the control component 2 further includes a sliding rod locking ring 25, which secures the sliding rod 23 to the movable plate 24.

[0057] Specifically, during installation, the sliding rod 23 is connected to and fixed on the movable plate 24 by the sliding rod locking ring 25, so that the protruding parts 241 at both ends of the movable plate 24 can move smoothly in the sliding 111. The function of the sliding rod locking ring 25 is to fasten the movable plate 24 to the end of the sliding rod 23 and prevent the movable plate 24 from shaking in the vertical direction.

[0058] For example, when moving downwards, the sliding rod locking ring 25 fixes the movable plate 24 tightly, and the two ends of the movable plate 24 do not wobble in the vertical direction, increasing stability and making the test more accurate.

[0059] In one embodiment, the upper cover plate 12 is locked to the upper end of the support profile 11 by using screws, and the lower end of the support profile 11 is fixed to the base plate 13 by screws.

[0060] Specifically, during installation, the base plate 13 and the support profile 11 are fixed with screws; the sliding rod 23 drives the movable plate 24 to move up and down to the required test height, and then the controllable bearing 21 fixes the sliding rod 23. Finally, the upper cover plate 12 and the support profile 11 are locked with screws, and the controllable bearing 21 is fitted into the movable rod and locked on the upper cover plate 12.

[0061] The screw fixing method facilitates disassembly, makes the support component 1 more stable, reduces the shaking of the movable plate 24, and improves the test accuracy.

[0062] Please see Figure 5 , Figure 5 yes Figure 2 Enlarged view at point A2.

[0063] In one embodiment, a scale 112 is provided on the inner side of the support profile 11, and the initial position is the 0 mark position of the scale 112.

[0064] Specifically, the scale marking uses a ruler 112, which is used to measure the height of the pen. The glass to be tested needs to be measured at a preset height. For example, if a piece of glass needs to be tested at different heights, such as 10mm and 15mm, in the existing technology, different height gradients need to be changed on the support profile 11. In this solution, it is only necessary to rotate the controllable bearing 21 to move the movable plate 24 from the 0 scale position to the scale position of the height to be tested corresponding to the ruler 112. For example, after testing 10mm, the controllable bearing 21 can be rotated to move the movable plate 24 to the height of 15mm, making the movement faster and more convenient.

[0065] If the glass thickness is changed, and the change is small, adjusting by rotating the controllable bearing 21 will be inaccurate. It is necessary to move the movable plate 24 downwards until it contacts the glass, and then manually adjust the scale indicator block 244.

[0066] In one embodiment, the smallest division of the scale is 1 mm.

[0067] Specifically, in existing technology, the position and height of each slot are fixed, and the distance between the slots is greater than 1mm, typically 5mm. When the required height adjustment accuracy is less than 5mm, it cannot be achieved, resulting in inaccurate testing. This solution sets a scale on the support profile, with a minimum accuracy of 1mm on the scale, which can meet the testing requirements of less than 5mm accuracy and improve the testing effect.

[0068] In one embodiment, the scale indicator block 244 is movably disposed on the movable plate 24, the scale indicator block 244 is capable of moving up and down, and the scale indicator block 244 is capable of moving within a unit scale of the scale ruler 112.

[0069] Specifically, before testing, the glass is placed on the platform base plate 13. The sliding and lifting mechanism is controlled by the controllable bearing 21, which moves the test pen to just contact the glass. After the arrow of the scale indicator block 244 is moved to the numerical position of the scale 112, the scale indicator block 244 is locked and fixed with screws. The test pen can then be moved or fixed by the controllable bearing 21. The scale 112 and the scale indicator block 244 work together to provide test requirements for the hardness of the glass at any height. Tests are performed on the glass at different heights. After the test is completed, the scale indicator block 244 is adjusted to test another piece of glass. When the thickness of the other piece of glass is different from that of the previous piece of glass, the scale indicator block 244 needs to be adjusted so that the arrow of the scale indicator block 244 moves back to the numerical position of the scale 112.

[0070] In one embodiment, the controllable bearing is rotatably mounted on the side of the mounting base and is either interference-fitted or clearance-fitted with the sliding rod.

[0071] Specifically, when testing is required, the glass is placed on the base plate. The controllable bearing is rotated to loosen the sliding rod, changing it to a clearance fit. The sliding rod is then manually pulled up and down to a predetermined height, which is the height to be tested. The controllable bearing is then tightened to fix the sliding rod, thus fixing the movable plate at the test height, changing it to an interference fit. After the test, if another height needs to be tested, the controllable bearing is rotated to loosen the sliding rod, changing it to a clearance fit.

[0072] In one embodiment, when the controllable bearing and the sliding rod are in an interference fit, the movable plate is fixed at the height to be tested; when the controllable bearing and the sliding rod are in a clearance fit, the movable plate can move from the height to be tested to any position.

[0073] Specifically, when different height tests are required on the glass, such as tests at 10mm and 15mm heights respectively, the glass is first placed on the base plate 13. The controllable bearing is rotated to loosen the sliding rod 23, changing it to a clearance fit. The sliding rod 23 is then manually pulled to a height of 10cm, which is the height to be tested. The controllable bearing 21 is then tightened to fix the sliding rod 23, thus fixing the movable plate 24 at the height to be tested, changing it to an interference fit. After the test, if another height needs to be tested, the controllable bearing 21 is rotated to loosen the sliding rod 23, changing it to a clearance fit.

[0074] Place the glass on the base plate 13, and move the test pen to the contact point between the pen tip and the glass by the movable plate 24 through the controllable bearing 21. Move the arrow of the scale indicator block 244 to the 0 position of the scale and then lock the scale indicator block 244 with screws. The test pen can be moved or fixed by the controllable bearing 21. The scale 112 and the scale indicator block 244 work together to provide test requirements for the hardness of the glass at any level.

[0075] Please see Figure 6 , Figure 6 yes Figure 2 Enlarged view at point A3.

[0076] In one embodiment, a pen holder 26 is also provided, which is located on the movable plate 24.

[0077] Specifically, the pen holder 26 is used to fix the test pen and provide verticality during drop, preventing the test pen from falling off-center. It is used in conjunction with a lever 242, a pen stop block 243, and a spring 245. The lever 242, pen stop block 243, and spring 245 are set on the movable plate 24, and the lever 242 is located on both sides of the pen stop block 243.

[0078] During installation, the pen holder 26, the pen stop block 243, and the spring 245 are screwed onto the movable plate 24 using the side pressure blocks and then inserted into the slot of the support profile 11; the movable rod is connected to the movable plate 24 by the sliding rod locking ring 25, and finally the upper cover plate 12 is locked onto the support profile 11.

[0079] When the pen stop 243 is pushed back, the test pen falls out of the pen holder 26 and hits the glass. After the pen stop 243 is released, the spring 245 pushes it forward to automatically return the stop to its original position, ensuring that the falling test pen is locked. The scale 112 indicates the different height positions of the test pen.

[0080] In a stationary state, the pen stop 243 clamps the test pen. The pen holder 26, the pen stop 243, and the spring 245 are mounted on the movable plate 24 by screws from the side pressure blocks and are inserted into the slots of the support profile 11. When the movable plate 24 is adjusted to a preset height, the pen in the pen holder 26 is released, causing the end of the pen to strike the glass to determine whether a crack has occurred on the surface of the glass.

[0081] During testing, the test pen is dropped from a predetermined height with its tip pointing downwards. The tip strikes the glass surface, causing cracks or breakage to achieve the desired testing effect. If the test pen tilts during the fall, the tip will make an angle when it contacts the glass, affecting the test results or even causing the test to fail. For example, as the test height increases, the test pen will gradually tilt during the fall, affecting the test results. Using a pen holder prevents the test pen from becoming non-vertical during the fall.

[0082] The installation method for this device is as follows:

[0083] 1. Secure the base plate 13 to the supporting profile 11 with screws;

[0084] 2. Install the pen holder 26, the pen stop block 243, and the spring 245 onto the movable plate 24 using screws from the two side pressure blocks and fit them into the slots of the support profile 11;

[0085] 3. The movable rod is connected to the movable plate 24 by the sliding rod locking ring 25, and finally the upper cover plate 12 is locked onto the support profile 11;

[0086] 4. The sliding rod 23 drives the movable plate 24 to move up and down to the required test height, and then the controllable bearing 21 fixes the sliding rod 23. Finally, the upper cover plate 12 and the profile are locked with screws, and the controllable bearing 21 is fitted into the movable rod and locked on the upper cover plate 12.

[0087] 5. Lock the scale 112 onto the profile and install the scale indicator block 244 on the movable plate 24.

[0088] Test steps:

[0089] Place the glass on the base plate 13, and move the test pen to just contact the glass by using the controllable bearing 21 to move the movable plate 24. Move the arrow of the scale indicator block 244 to the number position of the scale 112 and then lock the scale indicator block 244 with screws. The test pen can be moved or fixed by the controllable bearing 21. The scale 112 and the scale indicator block 244 work together to provide test requirements for the hardness of the glass at any level.

[0090] This invention proposes an adjustable pen-dropping fixture. Addressing the problem in existing technologies where the height of each slot on the card slot plate is fixed, making it impossible to handle tests where the height variation is less than the slot height, this solution designs the fixture as a single adjustable unit to meet different height requirements. Multiple structures are combined into one unit to create a rapidly adjustable and controllable test height fixture, satisfying the requirements for test heights with small intervals. This patented fixture primarily uses a bearing to move a sliding plate to the desired test position, with the pen holder ensuring the verticality of the drop. The controllable bearing 21 and sliding rod 23, tightened and loosened with screws, provide the fixture with a quickly and freely adjustable test height and test center position (existing technologies only allow for test height points at 5.0mm intervals). The scale indicator block 244 is manually moved up and down to the 0-mark position before testing with different glass thicknesses, ensuring that the glass of different thicknesses always starts at the 0-mark position at the test height. The minimum scale is 1mm, improving test accuracy.

[0091] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Under the concept of this utility model, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of this utility model as described above. For the sake of brevity, they are not provided in detail. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A pen holder with adjustable height, characterized in that, include: The support assembly includes a pair of vertically arranged support profiles and a horizontally arranged upper cover plate and a bottom plate. The support profiles are spaced apart on the bottom plate, and the upper cover plate is disposed on the support profiles. The support profiles are provided with scale markings. The control assembly includes a controllable bearing, a mounting base, a sliding rod, and a movable plate. The mounting base is disposed on the upper cover plate, and the upper cover plate has a mounting hole at the position where it connects with the mounting base. The sliding rod passes through the mounting hole and can slide relative to the mounting hole. The lower end of the sliding rod is connected to the movable plate. The test height can be adjusted to any position by tightening or loosening the controllable bearing and the sliding rod. The movable plate is equipped with a scale indicator block that moves vertically. The scale indicator block, in conjunction with the controllable bearing, moves the test height to the initial position before the test.

2. The adjustable-height pen holder according to claim 1, characterized in that, The sidewall of the supporting profile is provided with a slide rail, and both ends of the movable plate are provided with protrusions, which can be slidably embedded into the slide rail.

3. The adjustable-height pen holder according to claim 1, characterized in that, The control assembly also includes a sliding rod locking ring, which secures the sliding rod to the movable plate.

4. The adjustable-height pen holder according to claim 1, characterized in that, The upper cover plate is locked to the upper end of the supporting profile using screws, and the lower end of the supporting profile is fixed to the base plate using screws.

5. The adjustable-height pen holder according to claim 1, characterized in that, The inner side of the support profile is provided with a scale, and the initial position is the 0 mark position of the scale.

6. The pen holder with adjustable height according to claim 5, characterized in that, The smallest division of the ruler is 1 mm.

7. The adjustable-height pen holder according to claim 5, characterized in that, The scale indicator block is movably mounted on the movable plate. The scale indicator block can move up and down and can move within a unit scale of the scale.

8. The pen holder with adjustable height according to claim 1, characterized in that, The controllable bearing is rotatably mounted on the side of the mounting base and is either interference-fitted or clearance-fitted with the sliding rod.

9. A pen holder with adjustable height according to claim 8, characterized in that, When the controllable bearing and the sliding rod are in an interference fit, the movable plate is fixed at the height to be tested. When the controllable bearing and the sliding rod are in a clearance fit, the movable plate can move from the height to be tested to any position.

10. A pen holder with adjustable height according to claim 1, characterized in that, A pen holder is also provided, which is located on the movable plate.

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