Carbon fiber tow tensile sample preparation device

Abstract

The utility model discloses a preparation device for a carbon fiber tow tensile sample. The preparation device comprises a device base, a working platform is arranged on the device base, a reinforcing sheet base is fixedly mounted in the working platform, and a sampling device is fixedly mounted on the reinforcing sheet base; the sampling device comprises a pair of sample placing platforms, a pair of supporting rods are fixedly mounted between the pair of sample placing platforms, and a plurality of groups of sample clamps are rotationally connected to the pair of sample placing platforms. The sample clamp has the advantages that the sample clamps can be opened one by one and can also be opened at the same time, sampling and sample discharging are facilitated, the efficiency is improved, and the sample preparation precision can be improved through positioning scribed lines; the reinforcing sheet box integrates the functions of reinforcing sheet storage, sheet pressing, positioning and the like, and accurate and efficient sheet pressing can be achieved; the glue injection device can complete simultaneous glue injection of a plurality of samples, the glue outlet amount can be adjusted, positioning is accurate, the glue injection efficiency is high, and the glue injection precision is high; the device is used for replacing traditional manual sample preparation, so that the sample preparation efficiency can be improved, and the sample preparation precision is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of carbon fiber testing, and particularly relates to a device for preparing a tensile sample of a carbon fiber tow. Background Art

[0002] Polyacrylonitrile-based carbon fiber is an artificial synthetic fiber, which is a new material with excellent mechanical properties and is widely used in the fields of aviation, aerospace, architecture, sports, automobiles, medical treatment, etc. In different application fields, different requirements are put forward for the mechanical properties of carbon fiber. Studying and measuring the mechanical properties of carbon fiber has important theoretical and application values.

[0003] The dry tensile property of carbon fiber tow is the key to evaluating the mechanical properties of carbon fiber and is an important mechanical index for the ex-factory of carbon fiber. The traditional sample preparation method is generally manual sample preparation, which has low sample preparation efficiency and poor accuracy.

[0004] Therefore, in view of the above technical problems, it is necessary to provide a device for preparing a tensile sample of a carbon fiber tow.

[0005] The information disclosed in this background art section is only intended to enhance the overall understanding of the utility model and should not be regarded as an admission or any form of suggestion that this information constitutes prior art already known to those of ordinary skill in the art. Summary of the Utility Model

[0006] The purpose of the utility model is to provide a device for preparing a tensile sample of a carbon fiber tow, which can improve the accuracy and efficiency of manual sample preparation.

[0007] In order to achieve the above purpose, the technical solution provided by a specific embodiment of the utility model is as follows:

[0008] A device for preparing a tensile sample of a carbon fiber tow includes a device base;

[0009] A working platform is provided on the device base, a reinforcing piece base is fixedly installed inside the working platform, and a sampling device is fixedly installed on the reinforcing piece base;

[0010] The sampling device includes a pair of sample placing platforms. A pair of support rods are fixedly installed between the pair of sample placing platforms. A plurality of groups of sample clamps are rotatably connected to both of the pair of sample placing platforms. A second spring is fixedly installed between one end of each of the plurality of groups of sample clamps and the sample placing platform. A plurality of groups of positioning lines matching the plurality of groups of sample clamps are provided on both of the pair of sample placing platforms. The sample clamp can clamp and fix the carbon fiber tow sample inside the positioning lines;

[0011] A pressing component is installed on one side of each of the pair of sample placing platforms, and the pressing component is used for pressing the plurality of groups of sample clamps simultaneously;

[0012] A pair of slideways and a pair of thin guiding columns are fixedly installed on the device base. A glue injection device is slidably installed on each of the pair of slideways. The pair of glue injection devices are used for injecting glue on both sides of the carbon fiber tow sample. A glue injection control device is fixedly installed on the device base, and the glue injection control device is used for supplying glue to the pair of glue injection devices;

[0013] A reinforcing sheet cassette is slidably installed on each of the pair of thin guiding columns, and reinforcing sheets are stored inside the reinforcing sheet cassette;

[0014] A second positioning groove for placing the reinforcing sheet and a first positioning groove for placing the support rod are formed on the reinforcing sheet base.

[0015] In one or more embodiments of the present utility model, the pressing assembly includes two pairs of rotating guiding parts. The two pairs of rotating guiding parts are respectively rotatably connected to both sides of a pair of lofting platforms. A pressing rod is slidably connected between the two pairs of rotating guiding parts, and fastening bolts penetrate through the two pairs of rotating guiding parts;

[0016] The fastening bolt penetrates through the rotating guiding part and is screwed to the end of the pressing rod.

[0017] In one or more embodiments of the present utility model, a first limit stop is fixedly installed at the lower end of the slideway, and a limit ball is fixedly installed at a position close to the upper end of the slideway. The glue injection device can slide between the first limit stop and the limit ball.

[0018] In one or more embodiments of the present utility model, an adjustment knob is provided on the glue injection device, and the glue injection amount can be adjusted through the adjustment knob.

[0019] In one or more embodiments of the present utility model, the glue injection control device includes a pair of peristaltic pumps and a pair of glue storage bottles. The input ends of the pair of peristaltic pumps are connected to the inside of the pair of glue storage bottles through hoses, and the output ends of the pair of peristaltic pumps are connected to the inside of the pair of glue injection devices through hoses.

[0020] In one or more embodiments of the present utility model, a first spring is sleeved outside each of the pair of thin guiding columns, and a second limit stop is fixedly installed above the first spring. The second limit stop is slidably connected to the thin guiding column.

[0021] In one or more embodiments of the present utility model, a guiding groove is formed on the reinforcing sheet cassette. The guiding groove is matched with the thin guiding column, and the reinforcing sheet cassette is slidably connected to the thin guiding column through the guiding groove.

[0022] In one or more embodiments of the present utility model, one end of the reinforcing cassette is slidably connected with a side slidable opening and closing baffle, and the top of the reinforcing cassette is slidably connected with a top slidable opening and closing baffle; a pressing plate is arranged inside the reinforcing cassette, and a main guiding column and a pair of auxiliary guiding columns are fixedly installed at the top end of the pressing plate;

[0023] The top ends of the main guiding column and the pair of auxiliary guiding columns all slidably penetrate above the top slidable opening and closing baffle, a pressing handle is fixedly installed at the top end of the main guiding column, and a third spring is sleeved outside the main guiding column.

[0024] In one or more embodiments of the present utility model, a limiting hole is opened on the main guiding column.

[0025] In one or more embodiments of the present utility model, the lower end surface of the reinforcing cassette has an opening allowing the reinforcing sheet to pass through, and a pair of resetable stoppers are respectively fixedly installed on both sides of the opening;

[0026] The resetable stopper and the edge of the reinforcing sheet form a wedge-shaped structure, and the resetable stopper can contract under the extrusion of the reinforcing sheet;

[0027] Two pairs of limiting blocks are fixedly installed at the bottom end of the reinforcing cassette, and the thickness of the reinforcing sheet is greater than the thickness of the resetable stopper and less than the thickness of the limiting block.

[0028] Compared with the prior art, a carbon fiber tow stretching sample preparation device of the present utility model has the following beneficial effects:

[0029] 1. The sample clips can be opened one by one or simultaneously, which is convenient for sampling and loading samples to improve efficiency, and the positioning scale lines can improve the sample preparation accuracy;

[0030] 2. The reinforcing cassette integrates functions such as reinforcing sheet storage, sheet pressing, and positioning, and can achieve precise and efficient sheet pressing;

[0031] 3. The glue injection device can complete glue injection for multiple samples simultaneously, the glue output can be adjusted, the positioning is accurate, the glue injection efficiency is high, and the glue injection accuracy is high;

[0032] 4. Using this device for sample preparation instead of traditional manual sample preparation can improve the sample preparation efficiency and accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments recorded in the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0034] Figure 1 Structural diagram of a carbon fiber tow stretching sample preparation device in an embodiment of the present utility model;

[0035] Figure 2 Structural diagram of the device base of a carbon fiber tow stretching sample preparation device in an embodiment of the present utility model;

[0036] Figure 3 Structural diagram of the sampling device of a carbon fiber tow stretching sample preparation device in an embodiment of the present utility model;

[0037] Figure 4 Structural diagram of the reinforcing sheet cassette of a carbon fiber tow stretching sample preparation device in an embodiment of the present utility model;

[0038] Figure 5 Working state diagram of the reinforcing sheet cassette of a carbon fiber tow stretching sample preparation device in an embodiment of the present utility model;

[0039] Figure 6 Top view of the glue injection device of a carbon fiber tow stretching sample preparation device in an embodiment of the present utility model;

[0040] Figure 7 Structural diagram of the reinforcing sheet base of a carbon fiber tow stretching sample preparation device in an embodiment of the present utility model;

[0041] Figure 8 Structural diagram of the reinforcing sheet body of a carbon fiber tow stretching sample preparation device in an embodiment of the present utility model.

[0042] Main reference numeral description:

[0043] 10. Device base; 11. Working platform; 12. Slideway; 13. First limit stop; 14. Limit ball; 15. Second limit stop; 16. Fine guide post; 17. First spring; 20. Reinforcing sheet base; 21. First positioning groove; 22. Second positioning groove; 30. Sampling device; 31. Lofting platform; 32. Positioning line; 33. Sample clamp; 34. Second spring; 35. Support rod; 36. Carbon fiber tow sample; 37. Pressing rod; 38. Rotating guide part; 39. Fastening bolt; 40. Reinforcing sheet cassette; 41. Side slidable opening and closing baffle; 42. Top slidable opening and closing baffle; 43. Auxiliary guide post; 44. Main guide post; 45. Pressing handle; 46. Third spring; 47. Limit hole; 48. Pressing plate; 49. Resetable stop; 491. Limit block; 492. Guide groove; 50. Glue injection device; 51. Adjusting knob; 60. Glue injection control device; 61. Peristaltic pump; 62. Glue storage bottle; 70. Reinforcing sheet. Detailed implementation manners

[0044] In order to enable those skilled in the art to better understand the technical solutions in the present utility model, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with 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 in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0045] As Figures 1 - 8 shown, a carbon fiber tow stretching sample preparation device in an embodiment of the present utility model includes a device base 10. A working platform 11 is provided on the device base 10. A reinforcing piece base 20 is fixedly installed inside the working platform 11, and a sampling device 30 is fixedly installed on the reinforcing piece base 20.

[0046] As Figure 1 and Figure 3 shown, the sampling device 30 includes a pair of sample placing platforms 31. The pair of sample placing platforms 31 are fixedly installed on both sides of the top end of the reinforcing piece base 20. A pair of support rods 35 are fixedly installed between the pair of sample placing platforms 31. A first positioning groove 21 for placing the support rod 35 is provided on the reinforcing piece base 20. The support rod 35 is placed in the first positioning groove 21, which can fix the relative positions of the carbon fiber tow sample 36 and the reinforcing piece 70.

[0047] Six groups of sample clips 33 are rotatably connected to each of the pair of sample placing platforms 31. A second spring 34 is fixedly installed between one end of each of the six groups of sample clips 33 and the sample placing platform 31. Six groups of positioning scale lines 32 matching the six groups of sample clips 33 are provided on each of the pair of sample placing platforms 31. The sample clip 33 can clamp and fix the carbon fiber tow sample 36 inside the positioning scale line 32.

[0048] Specifically, the reinforcing piece 70 is placed on the sample placing platform 31 and aligned with the positioning scale line 32. After being fixed with the sample clip 33, cutting is performed to complete sampling. Six samples with a width of 0.8 mm can be prepared in one group.

[0049] A pressing component is installed on one side of each of the pair of sample placing platforms 31. The pressing component includes two pairs of rotating and guiding parts 38. The two pairs of rotating and guiding parts 38 are respectively rotatably connected to both sides of the pair of sample placing platforms 31. A pressing rod 37 is slidably connected between the two pairs of rotating and guiding parts 38. A fastening bolt 39 penetrates through each of the two pairs of rotating and guiding parts 38.

[0050] The fastening bolt 39 penetrates through the rotating and guiding part 38 and is screwed to the end of the pressing rod 37. By tightening the fastening bolt 39, the pressing rod 37 can be locked and fixed.

[0051] Specifically, when it is necessary to remove the sample after sample preparation is completed, the pressure rod 37 rotates above the sample clamp 33 by rotating the guiding part 38, and then presses down to simultaneously open the sample clamp 33. By tightening the fastening bolt 39, the pressure rod 37 can be locked and fixed to keep the sample clamp 33 in an open state, facilitating the removal of the sample.

[0052] As Figure 1 and Figure 7 shown, a pair of second positioning grooves 22 are formed on the reinforcing sheet base 20, and the reinforcing sheet 70 can be placed inside the second positioning grooves 22, facilitating the positioning and placement of the reinforcing sheet 70 below the carbon fiber tow sample 36.

[0053] As Figure 1 and Figure 2 shown, a pair of slideways 12 and a pair of thin guiding columns 16 are fixedly installed on the device base 10. A first limit stop 13 is fixedly installed at the lower end of the slideway 12, and a limit ball 14 is fixedly installed at a position near the upper end of the slideway 12.

[0054] A glue injection device 50 is slidably installed on each of the pair of slideways 12, and the glue injection device 50 can slide between the first limit stop 13 and the limit ball 14. A pair of glue injection devices 50 are used to inject glue on both sides of the carbon fiber tow sample 36. Six groups of glue injection nozzles are provided on the glue injection device 50, and the distance between adjacent glue injection nozzles is 1 mm.

[0055] Among them, an adjustment knob 51 is provided on the glue injection device 50, and the adjustment knob 51 can adjust the glue injection amount by squeezing and adjusting the glue injection pipe diameter.

[0056] Specifically, the glue injection device 50 can slide along the slideway 12. The first limit stop 13 limits the lower position, and the limit ball 14 limits the upper position. When the glue injection device 50 works, it moves along the slideway 12 to the position of the first limit stop 13 to inject glue on both sides of the carbon fiber tow sample 36. The glue injection position is at 1 / 4 of the width of the reinforcing sheet 70 outside the reinforcing sheet 70. After the glue injection is completed, the glue injection device 50 can be slid along the slideway 12 to the position of the upper limit ball 14 to reset.

[0057] A glue injection control device 60 is fixedly installed on the device base 10. The glue injection control device 60 includes a pair of peristaltic pumps 61 and a pair of glue storage bottles 62. Glue liquid is stored inside each of the pair of glue storage bottles 62, and the glue liquid is 502 glue.

[0058] The input ends of a pair of peristaltic pumps 61 are connected to the inside of a pair of glue storage bottles 62 through hoses, and the output ends of a pair of peristaltic pumps 61 are connected to the inside of a pair of glue injection devices 50 through hoses. Among them, the hoses are polytetrafluoroethylene plastic pipes.

[0059] Specifically, a pair of peristaltic pumps 61 can respectively extract the glue liquid inside a pair of glue storage bottles 62 to provide glue liquid for two glue injection devices 50. The single - run time of the glue injection control device 60 is set to 2 s, and by adjusting the adjustment knob 51, the flow rate of each glue injection head is adjusted to 1.5 drops / s, thus realizing safe glue injection.

[0060] As Figure 1 and Figure 4 shown, a guiding groove 492 is formed on the reinforcing film cassette 40. The guiding groove 492 is matched with the thin guiding column 16, and the reinforcing film cassette 40 is slidably connected to the thin guiding column 16 through the guiding groove 492.

[0061] As Figure 2 shown, a first spring 17 is sleeved outside a pair of thin guiding columns 16. A second limiting block 15 is fixedly installed above the first spring 17. The second limiting block 15 is slidably connected to the thin guiding column 16, and the second limiting block 15 can perform elastic lifting under the action of the first spring 17. That is to say, the reinforcing film cassette 40 can perform elastic lifting on the thin guiding column 16 to realize the function of pressing the film.

[0062] As Figure 1 、 Figure 4 and Figure 5 shown, the reinforcing film cassette 40 stores reinforcing films 70 inside, enabling the reinforcing film cassette 40 to have the function of storing the reinforcing films 70. Among them, the material of the reinforcing film 70 is paper, with a thickness of 1.4 mm, and the included angle between the hypotenuse and the bottom surface of the reinforcing film 70 is 45°.

[0063] One end of the reinforcing film cassette 40 is slidably connected with a side - slidable opening - closing baffle 41, and the side - slidable opening - closing baffle 41 can slide up and down. The top of the reinforcing film cassette 40 is slidably connected with a top - slidable opening - closing baffle 42, and the top - slidable opening - closing baffle 42 can slide horizontally.

[0064] As Figure 4 shown, a pressing plate 48 is arranged inside the reinforcing film cassette 40. The top end of the pressing plate 48 is fixedly installed with a main guiding column 44 and a pair of auxiliary guiding columns 43. The top ends of the main guiding column 44 and the pair of auxiliary guiding columns 43 both slide through to the upper side of the top - slidable opening - closing baffle 42. The top end of the main guiding column 44 is fixedly installed with a pressing handle 45, and a third spring 46 is sleeved outside the main guiding column 44.

[0065] A limiting hole 47 is formed on the main guiding column 44, and a positioning pin can be inserted into the limiting hole 47 to realize the positioning of the main guiding column 44.

[0066] Specifically, as Figure 5As shown, pull the pressing handle 45 to compress the third spring 46, insert the positioning pin into the limit hole 47, and then the side slidable opening and closing baffle 41 and the top slidable opening and closing baffle 42 can be opened, making the top and side of the reinforcement sheet cassette 40 in an open state to fill the reinforcement sheet 70. Close the side slidable opening and closing baffle 41 and the top slidable opening and closing baffle 42 in sequence, pull out the positioning pin, and the pressing plate 48 will automatically press the reinforcement sheet 70 tightly.

[0067] The lower end surface of the reinforcement sheet cassette 40 has an opening allowing the reinforcement sheet 70 to pass through. A pair of resetable stoppers 49 are fixedly installed on both sides of the opening respectively, and two pairs of limit blocks 491 are fixedly installed at the bottom end of the reinforcement sheet cassette 40.

[0068] As Figure 5 shown, the resetable stopper 49 includes a spring, a sliding structure, etc., and can contract under the extrusion of the reinforcement sheet 70. The resetable stopper 49 and the edge of the reinforcement sheet 70 form a wedge-shaped structure. Only under the elastic force of the third spring 46, the resetable stopper 49 can block the passage of the reinforcement sheet 70. When the limit block 491 contacts the base 20 of the reinforcement sheet and pressure is applied again, the resetable stopper 49 will automatically contract to allow the reinforcement sheet 70 to pass through.

[0069] Specifically, as Figure 5 shown, in the example, the thickness of the reinforcement sheet 70 is 1.4 mm, the thickness of the resetable stopper 49 is 0.7 mm, and the height of the limit block 491 is 2.4 mm. Under the control of the limit block 491, the distance between the front faces of the two reinforcement sheets 70 is 1.0 mm. During the downward pressing process, when the downward moving distance of the upper reinforcement sheet 70 exceeds the thickness 0.7 mm of the resetable stopper 49, the reinforcement sheet 70 pressed under the reinforcement sheet cassette 40 can be withdrawn. When the moving distance exceeds the thickness 0.7 mm of the resetable stopper 49 and is less than the thickness 1.4 mm of the reinforcement sheet 70, the next reinforcement sheet 70 can be exactly at the same position as the previous reinforcement sheet 70 under the elastic force of the third spring 46.

[0070] When the thickness of the reinforcement sheet 70 is different, according to experience, when the thickness of the reinforcement sheet 70 is h, the thickness h1 range of the resetable stopper 49 is approximately (1 / 3 - 2 / 3)h, and the distance range between the front faces of the two reinforcement sheets 70 controlled by the limit block 491 is greater than h1 and less than h.

[0071] The specific steps for preparing carbon fiber dry drawing samples by this device are as follows:

[0072] 1. Sampling: Use the sampling device 30 to fix a section of the carbon fiber tow sample 36 with the sample clip 33, stretch it along the direction of the positioning scale line 32 to the position of the other sample clip 33, fix it with the sample clip 33, cut the tow, and one sample sampling is completed. Take the remaining five samples in the same way.

[0073] 2. Positioning: Use the reinforcing plate base 20. Place two reinforcing plates 70 with their wide sides facing down in the second positioning groove 22. Place the sampling device 30 along the first positioning groove 21. Slide the glue injection device 50 along the slideway 12 to the position of the limit ball 14. Place the reinforcing plate base 20 on the working platform 11.

[0074] 3. Glue injection: Slide the glue injection device 50 along the slideway 12 to the position of the first limit stop 13. Start the glue injection control device 60 with a single - run time of 2 s. After the glue injection is completed, slide the glue injection device 50 along the slideway 12 to the position of the limit ball 14.

[0075] 4. Pressing the plate: Press down the reinforcing plate cassette 40 through the pressing handle 45 to maintain pressure for 2 - 3 s, then release the pressing handle 45. The reinforcing plate cassette 40 resets, and the pressing of the plate is completed.

[0076] 5. The methods of glue injection and pressing the plate on the other side are the same.

[0077] 6. Removing the sample: Take out the reinforcing plate base 20 from the working platform 11. Flip the pressing rod 37 by 90° and press down to fix the fastening bolt 39 while opening the sample clamp 33. Take out a set of six carbon fiber dry - drawn samples that have been prepared, and divide them into six sub - samples by cutting. The sample preparation is completed.

[0078] Compared with the prior art, a carbon fiber tow tensile sample preparation device of the present utility model has the following beneficial effects:

[0079] 1. The sample clamp 33 can be opened one by one or simultaneously, which is convenient for sampling and unloading samples to improve efficiency. The positioning scale 32 can improve the sample preparation accuracy;

[0080] 2. The reinforcing plate cassette 40 integrates functions such as storage, pressing, and positioning of the reinforcing plates 70, and can achieve accurate and efficient pressing of the plate;

[0081] 3. The glue injection device 50 can complete glue injection for multiple samples simultaneously, with adjustable glue output, accurate positioning, high glue injection efficiency, and high glue injection accuracy;

[0082] 4. Using this device for sample preparation instead of traditional manual sample preparation can improve the sample preparation efficiency and accuracy.

[0083] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-mentioned exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be construed as limiting the claims involved.

[0084] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A device for preparing a tensile sample of a carbon fiber tow, characterized in that, Comprising: A device base, on which a working platform is provided. Inside the working platform, a reinforcing plate base is fixedly installed, and a sampling device is fixedly installed on the reinforcing plate base; The sampling device includes a pair of lofting platforms. Between the pair of lofting platforms, a pair of support rods are fixedly installed. On each of the pair of lofting platforms, multiple groups of sample clamps are rotatably connected. At one end of each of the multiple groups of sample clamps, a second spring is fixedly installed between the sample clamp and the lofting platform. On each of the pair of lofting platforms, multiple groups of positioning scale lines matching the multiple groups of sample clamps are provided. The sample clamp can clamp and fix the carbon fiber tow sample inside the positioning scale lines; On one side of each of the pair of lofting platforms, a pressing component is installed. The pressing component is used to press multiple groups of sample clamps simultaneously; On the device base, a pair of chutes and a pair of thin guiding columns are fixedly installed. On each of the pair of chutes, a glue injection device is slidably installed. The pair of glue injection devices are used to inject glue on both sides of the carbon fiber tow sample. On the device base, a glue injection control device is fixedly installed. The glue injection control device is used to supply glue to the pair of glue injection devices; On each of the pair of thin guiding columns, a reinforcing plate cassette is slidably installed. Inside the reinforcing plate cassette, reinforcing plates are stored; On the reinforcing plate base, a second positioning groove for placing the reinforcing plate and a first positioning groove for placing the support rod are provided.

2. The preparation device for a carbon fiber tow tensile sample according to claim 1, characterized in that, The pressing component includes two pairs of rotating guiding parts. The two pairs of rotating guiding parts are respectively rotatably connected to both sides of the pair of lofting platforms. Between the two pairs of rotating guiding parts, a pressing rod is slidably connected. Through each of the two pairs of rotating guiding parts, a fastening bolt is penetrated; The fastening bolt penetrates through the rotating guiding part and is screwed at the end of the pressing rod.

3. The preparation device for a carbon fiber tow tensile sample according to claim 1, characterized in that, At the lower end of the chute, a first limiting block is fixedly installed. At a position near the upper end of the chute, a limiting ball is fixedly installed. The glue injection device can slide between the first limiting block and the limiting ball.

4. The preparation device for a carbon fiber tow tensile sample according to claim 3, characterized in that, On the glue injection device, an adjusting knob is provided. Through the adjusting knob, the glue injection amount can be adjusted.

5. The preparation device for a carbon fiber tow tensile sample according to claim 3, characterized in that, The glue injection control device includes a pair of peristaltic pumps and a pair of glue storage bottles. The input ends of the pair of peristaltic pumps are connected to the inside of the pair of glue storage bottles through hoses. The output ends of the pair of peristaltic pumps are connected to the inside of the pair of glue injection devices through hoses.

6. The preparation device for a carbon fiber tow tensile sample according to claim 1, wherein, On the outside of each of the pair of thin guiding columns, a first spring is sleeved. Above the first spring, a second limiting block is fixedly installed. The second limiting block is slidably connected to the thin guiding column.

7. The preparation device for a carbon fiber tow tensile sample according to claim 6, characterized in that, On the reinforcing plate cassette, a guiding groove is provided. The guiding groove matches the thin guiding column. The reinforcing plate cassette is slidably connected to the thin guiding column through the guiding groove.

8. The preparation device for a carbon fiber tow tensile sample according to claim 1, characterized in that, At one end of the reinforcing plate cassette, a side slidable opening and closing baffle is slidably connected. At the top of the reinforcing plate cassette, a top slidable opening and closing baffle is slidably connected; Inside the reinforcing plate cassette, a pressing plate is provided. At the top end of the pressing plate, a main guiding column and a pair of auxiliary guiding columns are fixedly installed; The top ends of the main guiding column and the pair of auxiliary guiding columns all slidably penetrate above the top slidable opening and closing baffle. At the top end of the main guiding column, a pressing handle is fixedly installed. Outside the main guiding column, a third spring is sleeved.

9. The preparation device for a carbon fiber tow tensile sample according to claim 8, characterized in that, On the main guiding column, a limiting hole is provided.

10. The preparation device for a carbon fiber tow tensile sample according to claim 1, characterized in that, The lower end face of the reinforcing sheet cassette has an opening allowing the reinforcing sheet to pass through, and a pair of resetable stoppers are fixedly installed on both sides of the opening respectively; The resetable stopper and the edge of the reinforcing sheet form a wedge-shaped structure, and the resetable stopper can contract when being extruded by the reinforcing sheet; Two pairs of limiting blocks are fixedly installed at the bottom end of the reinforcing sheet cassette, and the thickness of the reinforcing sheet is greater than the thickness of the resetable stopper and less than the thickness of the limiting block.

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