Pressure applying clamp with pressure value capable of being adjusted and displayed

Abstract

The utility model provides a pressure applying clamp capable of adjustably displaying a pressure value, which comprises a pair of handles hinged together, the front end of one handle is hinged with a fixed chuck, the front end of the other handle is hinged with an adjustable chuck matched with the fixed chuck, the fixed chuck and the adjustable chuck are hinged together, and the fixed chuck and the adjustable chuck are hinged together. A pressure applying plane is arranged at the front end of the adjustable chuck, a through hole is formed in the pressure applying plane, an adjusting screw rod is inserted into the through hole, the inner diameter of the through hole is larger than the outer diameter of the screw rod, the through hole is in threaded connection with a nut, a pressure head is rotationally arranged at the end of the adjusting screw rod, a pressure value graduated scale is arranged on the adjusting screw rod, and the adjustable chuck is provided with a limiting structure. According to the pressure applying clamp, the pressure can be adjusted in the using process of the pressure applying clamp according to rubber edge sealing strips with different thicknesses in the structure repairing process, the corresponding pressure is read through the pressure value graduated scale, the uniformity of the pressure value is guaranteed, and the curing quality of edge sealing glue is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of clamp equipment, in particular to a pressure clamp with adjustable and displayed pressure values. Background Art

[0002] During the repair work of aircraft rubber edge banding structure, it is necessary to pressurize and shape the edge banding adhesive according to the curing parameters to ensure the curing quality of the edge banding adhesive.

[0003] During the repair process of rubber edge banding used for sealing, in order to improve the curing time and quality of the edge banding glue, it is generally necessary to pressurize and heat the rubber edge banding during the repair process.

[0004] The current pressurization method often uses dovetail clamps such as Figure 1 As shown in the figure, this pressurization method has the problems of unadjustable pressure, low pressure, and unknown pressure value, which leads to insufficient pressure when repairing rubber edge banding, resulting in poor curing quality of edge banding glue and easy debonding. The dovetail clamp has a small pressure surface, resulting in uneven pressure and large differences in curing quality. The investigation found that there are A-type clamps on the market, such as Figure 2 As shown in the figure, this clamp has an increased pressure value, which is convenient for use. However, the pressure value is still unknown, which can easily lead to excessive pressure during rubber edge banding repair, causing serious deformation of the edge banding. A pressure clamp with adjustable pressure value display has the advantages of adjustable pressure and pressure value display, which facilitates scientific pressure application and ensures the quality of rubber edge banding repair.

[0005] Existing pressure clamps do not have the functions of pressure adjustment and pressure display, which makes it difficult for the pressure clamps to meet the curing parameter requirements of the edge banding adhesive. Utility Model Content

[0006] In view of this, the utility model provides a pressure clamp with adjustable pressure value display, which can adjust the pressure size according to the different thicknesses of rubber edge banding strips during structural repair during use of the pressure clamp, and read the corresponding pressure size through a pressure value scale to ensure the uniformity of the pressure value and the curing quality of the edge banding glue.

[0007] In order to solve the above technical problems, the utility model provides a pressure clamp with adjustable pressure value display, including a pair of handles hinged together, wherein the front end of one of the handles is hingedly provided with a fixed clamp, and the front end of the other handle is hingedly provided with an adjustable clamp that cooperates with the fixed clamp, the fixed clamp and the adjustable clamp are hinged together, and a pressure plane is provided at the front end of the adjustable clamp, a through hole is opened on the pressure plane, an adjusting screw is inserted in the through hole, the inner diameter of the through hole is larger than the outer diameter of the screw, and a nut is threadedly connected, and a pressure head is rotatably provided at the end of the adjusting screw, the outer diameter of the pressure head is larger than the inner diameter of the through hole, and a pressure value scale is provided on the adjusting screw, which is located on the adjustable clamp at the hinged part of the adjustable clamp and the fixed clamp. A limiting structure is provided, and the utility model can adjust and limit the minimum distance between the adjustable clamp and the fixed clamp hingedly connected to the two handles when the two handles are pressed close to each other through the limiting structure, which is convenient for coarse adjustment during the clamping operation according to the different thicknesses of the objects to be clamped. Then, the object to be pressurized between the two can be clamped and fixed by pushing the pressure head closer to the fixed clamp while turning the adjusting bolt. The corresponding pressure value can be read through the pressure value scale, which is convenient for reading the size of the clamping force on the workpiece to be pressurized through the indication on the pressure value scale, ensuring the uniformity of the pressure value at the corresponding position and improving the quality of edge sealing and curing.

[0008] The outer surface of the adjusting screw along its axial direction is cut to form a plane, on which scale display values ​​for displaying the pressure value are marked. The plane and the scale display values ​​constitute a pressure value scale.

[0009] The handle, fixed chuck and adjustable chuck are all arc-shaped structures, and a protective cover is provided on the outside of the handle.

[0010] A clamping block is provided on the pressure surface of the fixed chuck, an annular clip is provided at the end of the adjusting screw, and an annular clip groove adapted to the annular clip is provided on the pressure head. The annular clip at the end of the adjusting screw rotates and is clamped into the annular clip groove on the pressure head.

[0011] The limiting structure includes a threaded hole at the bottom of the adjustable chuck near the handle, a hand bolt is threadedly connected to the threaded hole, and a spherical limiting block is provided at the bottom of the nut of the hand bolt.

[0012] The adjustable chuck and the fixed chuck are hinged together by a pin shaft, the pin shaft passes through the lower part of the fixed chuck and the adjustable chuck, and is located below the hand-tightening bolt. The adjustable chuck and the fixed chuck are respectively hinged together with the handle on the same side thereof by rivets.

[0013] In summary, compared with the prior art, this application has at least one of the following beneficial technical effects:

[0014] 1. The utility model can adjust and limit the minimum distance between the adjustable clamping head and the fixed clamping head hingedly connected to the two handles when the two handles are pressed close to each other through the limiting structure, which is convenient for coarse adjustment during the clamping operation according to the different thicknesses of the objects to be clamped. Then, the object to be pressurized between the two can be clamped and fixed by pushing the pressure head closer to the fixed clamping head while turning the adjusting bolt. The corresponding pressure value can be read through the pressure value scale, which makes it convenient to read the size of the clamping force on the workpiece to be pressurized through the indication on the pressure value scale, thereby ensuring the uniformity of the pressure value at the corresponding position and improving the quality of edge sealing and curing.

[0015] 2. The utility model can rotate the adjusting screw and drive the pressure head to rotate at the same time until the pressure head contacts the edge banding strip. As the adjusting screw continues to be turned, the pressure of the screw plus the extrusion between the pressure head, the workpiece to be clamped and the clamping block, the annular clip at the end of the screw rotates along the annular clip groove inside the pressure head, the pressure head is fixed, and the adjusting screw can be rotated to advance the pressure plane to push the pressure head to further pressurize and fix the workpiece to be clamped, and then the corresponding pressure value can be quickly obtained through the indication on the pressure value scale, thereby realizing the visual adjustment function of the pressure value.

[0016] 3. Due to the threaded connection between the adjusting screw and the nut, each time the workpieces to be compressed and fixed are compressed and fixed, it is necessary to repeatedly adjust the position of the nut on the screw according to the thickness of the corresponding workpiece, and then screw the screw to the corresponding position accordingly. This operation greatly increases the time for repeatedly screwing the adjusting screw and the nut, and reduces the efficiency of compression and fixation. By pre-tightening the hand-screw bolt to the corresponding depth to pre-adjust the corresponding position of the spherical limit block, the maximum clamping width in the process of approaching the two handles can be conveniently and quickly pre-adjusted. Then, by coordinating the adjusting screw and the nut, the workpieces to be compressed and fixed of different thicknesses can be quickly and efficiently compressed and fixed, as well as the subsequent visual pressure operation, which makes the operation more convenient and efficient.

[0017] 4. The pressure clamp with adjustable pressure value display can realize pressure adjustment and synchronously display the corresponding pressure value. In the repair work of aircraft rubber edge banding structure, the pressure can be adjusted according to needs; at the same time, the contact area between the clamp chuck and the edge banding is increased to ensure the uniformity of the pressure value and the curing quality of the edge banding glue, making the operation more portable and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of the pressure clamp with adjustable pressure value display of the utility model;

[0019] Figure 2 For this utility model Figure 1 Enlarged view of point A in the middle;

[0020] Figure 3 For this utility model Figure 1 Enlarged view of point B in the middle;

[0021] Figure 4 This is a rear view of the pressure clamp with adjustable pressure value display according to the present invention.

[0022] Explanation of the accompanying reference numerals: 100, handle; 200, fixed chuck; 201, clamping block; 300, adjustable chuck; 310, pressure plane; 311, through hole; 320, adjusting screw; 330, nut; 340, pressure head; 350, pressure value scale; 400, limiting structure; 401, threaded hole; 402, hand-tightening bolt; 403, spherical limiting block. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the embodiment of the present invention clearer, the following will be combined with the appended drawings of the embodiment of the present invention. Figure 1-4 , clearly and completely describing the technical solutions of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field fall within the scope of protection of the present invention.

[0024] like Figure 1-4As shown: This embodiment provides a pressure clamp with adjustable pressure value display, including a pair of handles 100 hingedly arranged together, wherein the front end of one of the handles 100 is hingedly provided with a fixed clamp 200, and the front end of the other handle 100 is hingedly provided with an adjustable clamp 300 that cooperates with the fixed clamp 200, the fixed clamp 200 and the adjustable clamp 300 are hingedly arranged together, and a pressure plane 310 is provided at the front end of the adjustable clamp 300, and a through hole 311 is opened on the pressure plane 310, and an adjusting screw 320 is inserted into the through hole 311, the inner diameter of the through hole 311 is larger than the outer diameter of the screw, and a nut 330 is threadedly connected, and a pressure head 340 is rotatably provided at the end of the adjusting screw 320, and the outer diameter of the pressure head 340 is larger than the inner diameter of the through hole 311, the pressure head 340 and the nut 330 are respectively located on both sides of the pressure plane 310, and a pressure value scale is provided on the adjusting screw 320 350. A limiting structure 400 is provided on the adjustable chuck 300 located at the hinged portion of the adjustable chuck 300 and the fixed chuck 200. The utility model can adjust and limit the minimum distance between the adjustable chuck 300 and the fixed chuck 200 hingedly arranged thereto when the two handles 100 are pressed close to each other through the limiting structure 400, which is convenient for coarse adjustment during the clamping operation according to objects to be clamped of different thicknesses. Then, the pressure head 340 can be pushed toward the end close to the fixed chuck 200 while the adjusting bolt is turned to clamp and fix the object to be pressurized between the two. The corresponding pressure value can be read through the pressure value scale 350, which is convenient for reading the size of the clamping force on the workpiece to be pressurized through the indication on the pressure value scale 350, thereby ensuring the uniformity of the pressure value at the corresponding position and improving the quality of edge sealing and curing.

[0025] According to one embodiment of the present invention, Figure 1 、 Figure 2 and Figure 3 As shown, the outer surface of the adjusting screw 320 along its axis is cut to form a plane. The plane is marked with a scale indicating the pressure value. The plane and the scale indicate the value. The plane and the scale indicate the value, forming a pressure scale 350. With the initial static position as the 0N starting point, the fixture is applied to the clamping state of the edge banding repair. Different spacings are set between the pressure-applying surface at the end of the adjustable screw 320 and the fixed chuck 200. The corresponding pressure value is measured by a pressure sensor. The pressure sensor is a sensor with a digital display function in the prior art, completing the scale characterization. Considering the certain elasticity of the edge banding, the scale accuracy requires a large number of repetitive tests, and the data analysis of distance and pressure is completed. Based on the data analysis results, the scale accuracy is calculated. The utility model can quickly and easily read the corresponding pressure value in the compressed state through the pressure scale 350, realizing a visual display of the pressure value and adjustment operation, making the operation more convenient.

[0026] According to one embodiment of the present invention, Figure 1-4 As shown, the handle 100 , the fixed clamp 200 and the adjustable clamp 300 are all arc-shaped structures, and a protective cover is provided on the outside of the handle 100 . This is to facilitate the operator's gripping operation and prevent the user from being scratched by sharp corners.

[0027] According to one embodiment of the present invention, Figure 1 and Figure 2 The cam 320 is rotated to engage with the cam 340, and the cam 340 is rotated to engage with the cam 340. The pressure of the rod plus the extrusion between the pressure head 340, the workpiece to be clamped and the clamping block 201, the annular clamping strip at the end of the screw rotates along the annular clamping groove inside the pressure head 340, and the pressure head 340 is fixed. The adjusting screw 320 can be rotated to advance the pressure plane 310 to push the pressure head 340 to further pressurize and fix the workpiece to be clamped, and then the corresponding pressure value can be quickly obtained through the indication on the pressure value scale 350, thereby realizing the visual adjustment function of the pressure value.

[0028] According to one embodiment of the present invention, Figure 1 and Figure 3 As shown, the limiting structure 400 includes a threaded hole 401 at the lower part of the adjustable chuck 300 on the side close to the handle 100, and a hand-screwed bolt 402 is connected to the threaded hole 401. A spherical limiting block 403 is provided at the lower part of the nut 330 of the hand-screwed bolt 402. Due to the threaded connection between the adjusting screw 320 and the nut 330, in each process of clamping and fixing the workpiece to be clamped of different thicknesses, it is necessary to repeatedly adjust the position of the nut 330 on the screw according to the thickness of the corresponding workpiece, and then screw the screw to the corresponding position accordingly. This operation The time for repeatedly twisting the adjusting screw 320 and the nut 330 is greatly increased, and the efficiency of the clamping and fixing is reduced. By pre-tightening the hand-tightening bolt 402 to the corresponding depth to achieve the pre-adjustment of the corresponding position of the spherical limit block 403, the maximum clamping width in the process of approaching the two handles 100 can be conveniently and quickly pre-adjusted. Then, by coordinating the adjusting screw 320 and the nut 330, the workpieces to be clamped and fixed of different thicknesses can be quickly and efficiently clamped and fixed, as well as the subsequent visual pressure operation, and the operation is more convenient and efficient.

[0029] According to one embodiment of the present invention, Figure 1 and Figure 4 As shown, the adjustable clamp 300 and the fixed clamp 200 are hinged together by a pin, and the pin passes through the lower part of the fixed clamp 200 and the adjustable clamp 300 and is located below the hand-tightening bolt 402. The adjustable clamp 300 and the fixed clamp 200 are respectively hinged together with the handle 100 located on the same side thereof by rivets. The utility model can realize the hinged connection of the two handles 100 and the corresponding adjustable clamp 300 and the fixed clamp 200 by pressing or pulling the two handles 100 closer to or away from each other, so that the adjustable clamp 300 and the fixed clamp 200 can be rotated to a suitable angle along the pin, thereby realizing a convenient and quick adjustment operation of the distance between the adjustable clamp 300 and the fixed clamp 200, and the operation is more convenient and efficient.

[0030] The use method of this utility model:

[0031] First of all, it should be made clear that the pressure clamp involved in the present invention is mainly used for visually adjusting the pressure of the clamped workpiece during the clamping process. The present invention takes the visual adjustment of the pressure during the curing process of the edge glue of the aircraft rubber edge banding as an example to explain its usage in detail. When it is necessary to apply pressure and fix the aircraft rubber edge banding during the edge banding curing process to improve the curing quality and efficiency, the operator first adjusts the pressure clamps according to the length and thickness of the edge banding, and tightens the hand screw 402 to the appropriate position according to the thickness of the edge banding at the corresponding position, so as to realize the adjustment of the adjustable chuck 300 and the fixed chuck 20 of the pressure clamp during the clamping and fixing process. 0 (it should be noted that the outer wall of the hand-tightening bolt 402 is provided with a corresponding scale, or the standard specification and size of the bolt are calibrated and designed in advance. For example, the distance between the two connected pitches is 1mm, so that the minimum distance between the corresponding adjustable chuck 300 and the fixed chuck 200 can be confirmed by the number of turns of the hand-tightening bolt 402). The minimum distance here is preferably 3-6mm greater than the thickness of the edge banding. Then the operator adjusts the corresponding other pressure clamps one by one, and then operates the hands to grasp the handles 100 and move them closer to each other until the handles 100 can no longer be squeezed. At this time, due to the spherical limit The function of the position block 403 is to limit the minimum distance between the two handles 100, and then the operator turns the adjusting screw 320 to the appropriate position (the corresponding pressure value is read by the corresponding indication on the pressure value scale 350, and the pressure value here is appropriate according to the critical value of fatigue generated by the corresponding workpiece. For example, the critical value of the fatigue strength of the workpiece is not more than 20% of its thickness. The data here is defined according to the performance of the material itself and the results of the anti-fatigue test). Then, the visual pressure-adjustable pressure effect on the corresponding edge banding to be tightened and fixed can be achieved. The utility model can achieve the pressing of the two handles 100 against each other through the limiting structure 400. The minimum distance between the adjustable chuck 300 and the fixed chuck 200 to which the near-time control is hinged is adjusted and limited, which is convenient for coarse adjustment during the clamping operation according to the different thicknesses of the objects to be clamped. Then, the pressure head 340 can be pushed to the end close to the fixed chuck 200 by turning the adjusting bolt while clamping the object to be pressurized between the two, and the corresponding pressure value can be read through the pressure value scale 350, which makes it convenient to read the size of the clamping force on the workpiece to be pressurized through the indication on the pressure value scale 350, thereby ensuring the uniformity of the pressure value at the corresponding position and improving the quality of edge sealing and curing.

[0032] Furthermore, it should be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0033] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles described in the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A pressure clamp with adjustable pressure value display, comprising a pair of handles (100) hingedly connected together, characterized in that: The front end of one of the handles (100) is hingedly provided with a fixed chuck (200), and the front end of the other handle (100) is hingedly provided with an adjustable chuck (300) that matches the fixed chuck (200). The fixed chuck (200) and the adjustable chuck (300) are hingedly provided together. The front end of the adjustable chuck (300) is provided with a pressure plane (310), and a through hole (311) is opened on the pressure plane (310). An adjusting screw (320) is inserted, the inner diameter of the through hole (311) is larger than the outer diameter of the screw, a nut (330) is threadedly connected to the outer side of the adjusting screw (320), a pressure head (340) is rotatably provided at the end of the adjusting screw (320), the outer diameter of the pressure head (340) is larger than the inner diameter of the through hole (311), a pressure value scale (350) is provided on the adjusting screw (320), and a limiting structure (400) is provided on the adjustable chuck (300).

2. The pressure clamp with adjustable pressure value display according to claim 1, characterized in that: The outer surface of the adjusting screw (320) along its axial direction is cut to form a plane, on which scale display values ​​for displaying the magnitude of the pressure value are marked, and the plane and the scale display values ​​constitute a pressure value scale (350).

3. The pressure clamp with adjustable pressure value display according to claim 2, characterized in that: The handle (100), the fixed clamp (200) and the adjustable clamp (300) are all arc-shaped structures.

4. The pressure clamp with adjustable pressure value display according to claim 3, characterized in that: A pressing block (201) is provided on the pressure surface of the fixed chuck (200), an annular clip is provided at the end of the adjusting screw (320), and an annular clip groove adapted to the annular clip is provided on the pressure head (340), and the annular clip at the end of the adjusting screw (320) rotates and is clamped into the annular clip groove on the pressure head (340).

5. The pressure clamp with adjustable pressure value display according to claim 4, characterized in that: The limiting structure (400) comprises a threaded hole (401) provided at the lower portion of the adjustable chuck (300) on the side close to the handle (100), a hand-tightening bolt (402) being internally threadedly connected to the threaded hole (401), and a spherical limiting block (403) being provided at the lower portion of the nut (330) of the hand-tightening bolt (402).

6. The pressure clamp with adjustable pressure value display according to claim 5, characterized in that: The adjustable chuck (300) and the fixed chuck (200) are hinged together by a pin shaft, the pin shaft passes through the lower parts of the fixed chuck (200) and the adjustable chuck (300), and is located below the hand-tightening bolt (402). The adjustable chuck (300) and the fixed chuck (200) are respectively hinged together with the handle (100) located on the same side as them by rivets.

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