Clamping mechanism

Abstract

The utility model provides a clamping mechanism. The clamping mechanism comprises a bottom plate, a guide rail arranged on the bottom plate, a rotating assembly and a driving assembly. A top plate is fixed on a sliding block of the guide rail, the top plate is connected to the rotating assembly through a pin shaft, and the driving assembly is used for driving the top plate to slide along the guide rail to drive the rotating assembly to rotate, so that the rotating assembly and the bottom plate are clamped, pressed or opened. By arranging the rotating assembly, linear motion is converted into rotating motion, the structure is simple and compact, the smoothness of the clamping action of the mechanism is improved, and the testing efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit board manufacturing equipment, in particular to a clamping mechanism. Background Art

[0002] PCB (Printed Circuit Board), also known as printed circuit board in Chinese, is an important electronic component, a support for electronic components, and a carrier for electrical connection of electronic components. Because it is made by electronic printing, it is called a "printed" circuit board.

[0003] After the PCB board is assembled, it needs to be tested. However, when testing the PCB board, in order to prevent the PCB board from moving, a fixed clamping mechanism is needed. There are two main types of PCB board fixing mechanisms. One uses vacuum adsorption to adsorb the board under test, and the other uses a clamping mechanism to clamp the board under test. The disadvantage of the first vacuum adsorption method is that one side of the board under test is adsorbed by the vacuum suction cup during adsorption, and it cannot be tested. Only single-sided testing can be performed, so the second clamping mechanism is more inclined to use the second clamping mechanism to fix the board under test.

[0004] Generally, the processing cost of the claw-type clamping mechanism is high and the clamping action is not smooth, which easily causes jamming and affects the normal operation of the equipment. Utility Model Content

[0005] The utility model aims to provide a clamping mechanism to at least solve the problem that the clamping action of the existing clamping mechanism is not smooth, causing jamming and affecting the normal operation of the equipment.

[0006] In order to solve the above technical problems, the utility model provides a clamping mechanism, comprising: a bottom plate, a guide rail arranged on the bottom plate, a rotating assembly and a driving assembly;

[0007] A top plate is fixed on the slider of the guide rail, and the top plate is connected to the rotating assembly through a pin shaft. The driving assembly is used to drive the top plate to slide along the guide rail to drive the rotating assembly to rotate, so that the rotating assembly and the bottom plate are clamped, pressed or opened.

[0008] Optionally, in the clamping mechanism, the clamping mechanism includes a pressure plate, and when the rotating assembly rotates, the pressure plate can rotate to clamp or open the base plate.

[0009] Optionally, in the clamping mechanism, a ruler is provided on the pressure plate.

[0010] Optionally, in the clamping mechanism, the rotating assembly includes a rotating hole, a rotating shaft is provided in the rotating hole, the rotating shaft is fixed to the base plate, and the rotating assembly rotates relative to the base plate via the rotating shaft.

[0011] Optionally, in the clamping mechanism, the rotating component includes a waist hole, the pin shaft is located in the waist hole and is fixedly connected to the top plate, and the movement of the top plate drives the pin shaft to move in the waist hole, so that the rotating component rotates around the rotation axis.

[0012] Optionally, in the clamping mechanism, the clamping mechanism includes multiple groups of clamping positions, each group of the clamping positions includes multiple groups of guide rails, multiple groups of rotating components and multiple groups of driving components, and the top plate and the pressure plate are respectively and integrally connected to the multiple groups of guide rails and the multiple groups of rotating components in each group of the clamping positions.

[0013] Optionally, in the clamping mechanism, each group of the clamping positions includes two groups of rotating components and driving components, and the two groups of rotating components and driving components are symmetrically arranged on both sides of the top plate.

[0014] Optionally, in the clamping mechanism, a plurality of groups of the clamping positions are arranged in parallel to the base plate.

[0015] Optionally, in the clamping mechanism, the rotating assembly includes a pressing portion and a main body portion, and when the rotating assembly rotates, the pressing portion can be clamped, pressed or opened with the bottom plate.

[0016] Optionally, in the clamping mechanism, the clamping mechanism further includes a cover plate, the cover plate is located on the top of the clamping mechanism, a guide rod is provided on the bottom plate, and the cover plate is covered on the bottom plate through the guide rod.

[0017] The utility model provides a clamping mechanism in which a rotating assembly is respectively connected to an upper top plate and a lower bottom plate, and the rotating assembly is driven to rotate around the bottom plate by driving the top plate to move along a guide rail, thereby realizing the abutment and clamping opening and closing of the pressure plate and the bottom plate, converting the linear motion into rotational motion, thereby solving the problem of the clamping action of the claw-type clamping mechanism being not smooth and easy to get stuck. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 A schematic diagram of a partial structure of the clamping mechanism provided in this embodiment;

[0020] Figure 2 A schematic diagram of the overall exploded structure of the clamping mechanism provided in this embodiment;

[0021] Figure 3 This is a schematic diagram of the cross-sectional structure of the clamping mechanism provided in this embodiment.

[0022] The symbols in the figure are explained as follows:

[0023] 1-clamping mechanism; 10-bottom plate; 20-rotating assembly; 30-driving assembly; 40-cover plate;

[0024] 11-guide rail; 12-top plate; 13-pin shaft; 14-pressing plate; 15-rotating shaft; 101-guide rod; 110-accommodating space; 210-step portion. DETAILED DESCRIPTION

[0025] The clamping mechanism proposed by the present invention is further described in detail below in combination with the accompanying drawings and specific embodiments. It should be noted that the accompanying drawings are all in a very simplified form and use non-precise proportions, which are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention. In addition, the structure shown in the accompanying drawings is often a part of the actual structure. In particular, the emphasis of each accompanying drawing is different, and sometimes different proportions are used.

[0026] It should be noted that the terms “first”, “second”, etc. in the specification, claims, and drawings of the present utility model are used to distinguish similar objects in order to describe the embodiments of the present utility model, and are not used to describe a specific order or sequence. It should be understood that the structures used in this way can be interchanged under appropriate circumstances. In addition, the terms “including” and “having” and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products, or devices. In order to more clearly describe the positional relationship between the various structures, the following are used to describe the positional relationship between the various structures: Figure 1 Taking the placement direction of the clamping component in as an example, the length direction of the clamping component is defined as the left-right direction, the width direction of the clamping component is defined as the front-back direction, and the direction of clamping the sheet is located in front of the clamping component.

[0027] Embodiment 1:

[0028] This embodiment provides a clamping mechanism 1, such as Figure 1 and Figure 2As shown, the clamping mechanism 1 includes a bottom plate 10, a guide rail 11, a rotating assembly 20 and a driving assembly 30 arranged on the bottom plate 10; the guide rail 11 has a slider, which can slide back and forth along the track of the guide rail 11. The top plate 12 is fixed on the guide rail slider, and the top plate 12 can reciprocate along the track of the guide rail 11 together with the guide rail slider. The top plate 12 is connected to the rotating assembly 20 through a pin 13, and the driving assembly 30 is used to drive the top plate 12 to slide along the guide rail 11, thereby driving the rotating assembly 20 to rotate, so that the rotating assembly 20 and the bottom plate 10 are clamped, pressed or opened. In this embodiment, the bottom plate 10 is long and placed in the left and right direction, and the guide rail 11 on the bottom plate 10 is arranged in the front and back direction along the width direction of the bottom plate. Under the driving action of the driving assembly 30, the top plate 12 can move in the front and back direction through the guide rail, thereby driving the rotating assembly 20 to rotate and move relatively in the front and back direction. By connecting the top plate 12 connected to the guide rail 11 with the rotating assembly 20, the linear motion is converted into rotational motion, so that the overall structure of the mechanism is simpler, more compact, lighter, and easier to maintain later.

[0029] In this embodiment, the rotating assembly 20 includes a pressing plate 14. The rotating assembly 20 includes a step portion 210, and the step portion 210 is located on the side of the rotating assembly 20 facing the sheet material clamping. The pressing plate 14 is fixedly connected to the step portion 210, and the rotation of the step portion 210 drives the pressing plate 14 to rotate accordingly. When the rotating assembly 20 rotates in the sheet material clamping direction, the pressing plate 14 rotates with the rotating assembly 20 so that the protruding end of the pressing plate 14 abuts against the bottom plate 10 for clamping; when the rotating assembly 20 rotates toward the side away from the sheet material clamping direction, the pressing plate 14 rotates in the opposite direction with the rotating assembly 20 so that the protruding end of the pressing plate 14 leaves the bottom plate 10 and releases the clamping. Through the positional relationship between the pressing plate 14 and the bottom plate 10, the sheet material is clamped and fixed or released between the pressing plate 14 and the bottom plate 10.

[0030] When the pressing plate 14 and the bottom plate 10 are rotated and abutted, the pressing plate 14 and the bottom plate 10 are in surface contact, and the length of the pressing plate 14 is parallel to the sheet to be clamped. Compared with point-to-surface contact, surface-to-surface contact can reduce the pressure on the sheet to avoid damage to the clamping. In order to facilitate the staff to observe and compare the placement position of the tested board after clamping it, a ruler is provided above the pressing plate 14. When the tested board is clamped between the pressing plate 14 and the bottom plate 10, the position of the tested board can be measured and compared intuitively and quickly through the ruler above the pressing plate 14, further improving the clamping accuracy.

[0031] Figure 3 A cross-sectional view of the clamping mechanism provided in this embodiment, such as Figure 3As shown, the rotating component 20 includes a rotating hole, in which a rotating shaft 15 is provided, and the rotating shaft 15 is connected and fixed to the base plate 10. An accommodating space 110 is provided on the base plate 10 at a position corresponding to the rotating component 20, and both ends of the rotating shaft 15 are fixed to the side walls of the accommodating space 110. The bottom end of the rotating component 20 is connected to the accommodating space 110 through the rotating shaft 15, and the rotating component 20 rotates relative to the base plate 10 by taking the rotating shaft 15 as the rotating shaft. Among them, the rotating hole is located at the lower end of the rotating component 20, and the step portion 210 is located at the upper end of the rotating component. The rotating hole is opened along the left and right direction of the rotating component 20, that is, the direction of the rotating shaft 15 is consistent with the length direction of the base plate 10, and is perpendicular to the track direction of the guide rail 11. The rotating component 20 can rotate relative to the base plate in the direction of sheet material clamping or away from sheet material clamping through the rotating shaft fixed on the base plate. Figure 3 Taking the direction of the cross-sectional diagram of the clamping mechanism as an example, the direction in which the rotating component 20 rotates toward the clamping direction of the sheet is clockwise rotation, and the direction in which the rotating component 20 rotates toward the side away from the clamping direction of the sheet is counterclockwise rotation. The step portion 210 of the rotating component is located above the rotating shaft 15 and higher than the surface of the base plate 10, and the pressing plate 14 is located at the step portion 210 and is also higher than the surface of the base plate 10. The step portion 210 and the pressing plate can rotate together with the rotation of the rotating component 20 and contact the base plate 10 to clamp or release the sheet.

[0032] Furthermore, the rotating assembly 20 also includes a waist hole, the pin shaft 13 is located in the waist hole and the pin shaft 13 is connected and fixed to the top plate 12, and the top plate 12 moves to drive the pin shaft 13 to move in the waist hole, thereby driving the rotating assembly 20 to rotate around the rotating shaft 15. That is, one end of the rotating assembly 20 is fixedly connected to the bottom plate 10 below through the rotating shaft 15, and one end is fixedly connected to the top plate 12 above through the pin shaft 13. Similarly, the top plate 12 is provided with a groove at a position corresponding to the rotating assembly 20, and the pin shaft 13 is fixed in the groove, and the groove also provides a certain space for the rotating assembly 20.

[0033] The driving component 30 can be a cylinder, a motor, an electric cylinder or a manual push rod, etc. In the present embodiment, the driving component is a cylinder. When the cylinder is pushed out, the top plate 12 moves forward along the direction of the guide rail 11, driving the rotating component 20 to move forward clockwise along the rotating axis until the pressure plate 14 and the front end position of the bottom plate 10 are pressed together to form a clamping and pressing mechanism; when the cylinder is retracted, the top plate 12 moves backward along the direction of the guide rail 11, driving the rotating component 20 to move backward counterclockwise along the rotating axis, and the pressure plate 14 is in an open state with the bottom plate 10. Thus, the pushing out and retracting actions of the cylinder are converted into rotary pressing and opening actions through the rotating component. The mechanism converts linear motion into rotary motion, which is simpler and more compact in structure, lighter in weight, and more suitable for practical applications.

[0034] Further, such as Figure 1 and Figure 2 As shown, the clamping mechanism 1 includes multiple groups of clamping positions, each group of clamping positions includes multiple groups of guide rails 11, multiple groups of rotating components 20 and multiple groups of driving components 30, and the top plate 12 and the pressure plate 14 are respectively integrally connected to the multiple groups of guide rails 11 and the multiple groups of rotating components 30 in each group of clamping positions. Each group of clamping positions is arranged in parallel with the bottom plate 10, and the multiple groups of clamping positions can clamp different panels to be tested simultaneously or continuously, which effectively improves the processing efficiency.

[0035] In this embodiment, Figure 2 Taking the clamping positions of the clamping mechanism in the example, it includes two groups of clamping positions, and the top plate 12 and the pressure plate 14 are respectively two groups of guide rails 11, rotating components 20 and driving components 30 that are integrally connected to each group of clamping positions. Among them, the number and position of the guide rails 11, rotating components 20 and driving components 30 in the two groups of clamping positions are the same, and the two groups of clamping positions are arranged in parallel on the bottom plate 10 with the same structure. The number and position of the guide rails 11, rotating components 20 and driving components 30 in each group of clamping positions may also be inconsistent, and can be adjusted according to factors such as the size of the actual board to be tested or the size of the space, and no specific restrictions are made here. By setting different clamping positions, the clamping action of different boards to be tested can be controlled separately, and boards to be tested of different sizes can be selectively clamped, thereby improving the stability of clamping and the test efficiency.

[0036] Specifically, each group of clamping positions includes two groups of rotating components 20 and two groups of driving components 30. The two groups of rotating components 20 and the two groups of driving components 30 are respectively arranged on both sides of the top plate 12. That is to say, grooves are provided on both sides of the top plate 12. The two groups of rotating components 20 are respectively connected to the two sides of the top plate through pins 13 fixed in the grooves. Correspondingly, the bottom plate 10 is provided with two groups of accommodating spaces corresponding to the positions of the two groups of rotating components 20. The two groups of rotating components 20 are connected to the bottom plate through rotating shafts 15 connected to the accommodating spaces of the bottom plate 10. The rotating components 20 are fixed between the lower bottom plate 10 and the upper top plate 12. The linear motion of the upper top plate 12 drives the rotating components 20 to rotate around the rotating shaft 15 fixed to the bottom plate, thereby realizing the clamping and opening of the test plate.

[0037] Further, each group of clamping positions includes multiple groups of guide rails 11, which are arranged in parallel on the bottom plate 10, and the top plate 12 is fixed to the sliders of the multiple groups of guide rails 11. The sliders are driven to slide along the guide rails 11 by the driving assembly 30, thereby driving the top plate 12 to move along the track of the guide rails 11. The multiple groups of guide rails 11 arranged in each group of clamping positions ensure the consistency and smoothness of the clamping action, indirectly improve the stability and reliability of the test equipment, and improve the efficiency of the test. In this embodiment, each group of clamping positions includes three groups of guide rails 11, two groups of guide rails 11 are located on both sides of the top plate 12, and the other group of guide rails 11 is located in the middle of the top plate 12. The three groups of guide rails 11 are arranged at intervals on each group of top plates, further ensuring the consistency of the clamping action and improving the stability of the test equipment. Similarly, the number of guide rails in each group of clamping positions can be set according to the actual environment, and no specific restrictions are made here.

[0038] like Figure 2 As shown, the clamping mechanism 1 also includes a cover plate 40, which is located at the top of the clamping mechanism 1 and covers the multiple clamping positions on the bottom plate 10, and covers the multiple guide rails, rotating components, driving components and other components between the cover plate 40 and the bottom plate 10 to prevent dust from entering the inside of the clamping mechanism and affecting the test process. The bottom plate 10 is provided with multiple guide rods 101, and the cover plate 40 is provided with guide holes corresponding to the positions of the guide rods 101. The cover plate 40 is covered with the guide rods 101 on the bottom plate 10 through the guide holes. The disassembly and assembly are more convenient through the insertion of the guide rods 101 and the guide holes. The structure is simple and convenient for personnel maintenance.

[0039] Embodiment 2:

[0040] The clamping mechanism in the second embodiment is different from the clamping mechanism in the first embodiment in that the rotating assembly includes a pressing portion and a main body, and no pressing plate is provided on the rotating assembly. The pressing portion is rotated to clamp or open with the bottom plate. The guide rail, driving assembly and other structures are the same as those in the first embodiment and will not be repeated here. The rotating assembly is T-shaped as a whole. The upper end of the main body is provided with a waist hole. The main body is connected to the top plate through a pin in the waist hole at the upper end, and is connected to the bottom plate through a rotating shaft in the rotating hole at the lower end of the main body. The pressing portion is located on the side of the main body away from the guide rail and extends out of the main body. When the top plate moves and drives the main body to rotate around the rotating axis, the extended end of the pressing portion is rotated to clamp and press against the bottom plate 10, or rotates in the opposite direction to open from the clamping and pressing state with the bottom plate 10. The clamping force is formed between the pressing portion and the bottom plate 10 to clamp the sheet material between the mortgage portion and the bottom plate 10.

[0041] The clamping mechanism of the present application has the following beneficial effects:

[0042] 1. The linear motion of the guide rail is converted into rotational motion through the mechanism, which has a simpler, more compact structure and lighter weight, making it easier for later maintenance work by staff.

[0043] 2. The use of multiple sets of guide rails ensures the consistency and smoothness of the clamping action, indirectly improves the stability and reliability of the test equipment, and effectively improves the test efficiency.

[0044] 3. The rotational movement between the rotating assembly and the base plate increases the continuity of the movement, avoids clamping jams caused by the clamping mechanism of the claw type during the clamping process, and improves the operating efficiency of the equipment.

[0045] It should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other. In addition, the different parts between the various embodiments can also be used in combination with each other, and the present utility model is not limited to this.

[0046] The above description is only a description of the preferred embodiment of the utility model, and is not any limitation on the scope of the utility model. Any changes and modifications made by ordinary technicians in the field of the utility model based on the above disclosure shall fall within the scope of protection of the claims.

Claims

1. A clamping mechanism, characterized in that: include: A base plate, a guide rail arranged on the base plate, a rotating assembly and a driving assembly; A top plate is fixed on the slider of the guide rail, and the top plate is connected to the rotating assembly through a pin shaft. The driving assembly is used to drive the top plate to slide along the guide rail to drive the rotating assembly to rotate, so that the rotating assembly and the bottom plate are clamped, pressed or opened.

2. The clamping mechanism according to claim 1, characterized in that: The rotating assembly includes a pressing plate. When the rotating assembly rotates, the pressing plate rotates to clamp and press or open with the bottom plate.

3. The clamping mechanism according to claim 2, characterized in that: A ruler is arranged on the pressing plate.

4. The clamping mechanism according to claim 1, characterized in that: The rotating assembly comprises a rotating hole, a rotating shaft is arranged in the rotating hole, the rotating shaft is connected to the bottom plate, and the rotating assembly rotates relative to the bottom plate via the rotating shaft.

5. The clamping mechanism according to claim 4, characterized in that: The rotating assembly comprises a waist hole, the pin shaft is located in the waist hole and is fixedly connected to the top plate, and the movement of the top plate drives the pin shaft to move in the waist hole, so that the rotating assembly rotates around the rotating axis.

6. The clamping mechanism according to claim 2, characterized in that: The clamping mechanism includes multiple groups of clamping positions, each group of the clamping positions includes multiple groups of guide rails, multiple groups of rotating components and multiple groups of driving components, and the top plate and the pressure plate are respectively and integrally connected to the multiple groups of guide rails and multiple groups of rotating components in each group of the clamping positions.

7. The clamping mechanism according to claim 6, characterized in that: Each group of the clamping positions includes two groups of the rotating components and two groups of the driving components, and the two groups of the rotating components and the two groups of the driving components are symmetrically arranged on both sides of the top plate.

8. The clamping mechanism according to claim 7, characterized in that: A plurality of groups of the clamping positions are arranged in parallel on the bottom plate.

9. The clamping mechanism according to claim 1, characterized in that: The rotating assembly comprises a pressing portion and a main body portion. When the rotating assembly rotates, the pressing portion can be clamped and pressed or opened with the bottom plate.

10. The clamping mechanism according to claim 1, characterized in that: The clamping mechanism further comprises a cover plate, which is located at the top of the clamping mechanism. A guide rod is arranged on the bottom plate, and the cover plate is covered on the bottom plate through the guide rod.

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