Clamping structure

Abstract

The utility model discloses a clamping structure. The clamping structure comprises a containing plate and a plurality of clamping assemblies, the center area of the containing plate is used for containing a workpiece, the containing plate is fixedly arranged on the multiple clamping assemblies, the containing plate and the multiple clamping assemblies surround to form the center area, and the multiple clamping assemblies synchronously clamp the workpiece in a multilateral mode. Through holes are formed in the positions, corresponding to the clamping assemblies, of the containing plate, and the containing plate can penetrate through the through holes through screws or bolts to be fixedly arranged on the multiple clamping assemblies. The clamping structure comprises the multiple clamping assemblies and the containing plate, the center area of the containing plate is used for containing the workpiece, the multiple clamping assemblies synchronously clamp the workpiece in a multilateral mode, and the clamping structure can adapt to assembling and welding of the multiple scattered workpieces, namely can be suitable for various assembling and welding scenes.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to a clamping structure. Background Art

[0002] The workpiece needs to be clamped to keep it stable during processing. For example, in the production of tablet computers, mobile phones, laptop computers and other products with a combination of frames and middle plates, the back plate needs to be clamped with the aluminum alloy frame and titanium alloy frame before welding. For clamping molds, the most commonly used is the inclined guide column core-pulling structure, which is mostly clamped on both sides and has a relatively fixed application scenario. Utility Model Content

[0003] In view of this, the utility model aims to solve one of the problems in the related art at least to a certain extent. To this end, the purpose of the utility model is to provide a clamping structure.

[0004] The present application provides a clamping structure. The clamping structure comprises a placement plate and a plurality of clamping assemblies, wherein the central area of ​​the placement plate is used to place a workpiece, the placement plate is fixedly arranged on the plurality of clamping assemblies, the placement plate and the plurality of clamping assemblies surround and form a central area, and the plurality of clamping assemblies clamp the workpiece synchronously on multiple sides; through holes are provided at corresponding positions of the placement plate and the clamping assemblies, and the placement plate can be fixedly arranged on the plurality of clamping assemblies by screws or bolts passing through the through holes.

[0005] In some embodiments, the placement plate is fixedly disposed on the same horizontal plane of the plurality of clamping assemblies.

[0006] In some embodiments, the plurality of clamping assemblies includes four, and every two of the clamping assemblies are disposed opposite to each other.

[0007] In some embodiments, the clamping structure further includes a driving mechanism, the clamping assembly includes a clamping mechanism, and the driving mechanism drives the clamping mechanism to move toward the central area for synchronous clamping, or drives the clamping mechanism to move synchronously away from the central area to release the workpiece.

[0008] In some embodiments, the driving mechanism is a pneumatic cylinder or an oil cylinder.

[0009] In some embodiments, the clamping mechanism includes a movable plate, a wedge block, a first guide column and a slider, the movable plate is connected to the driving mechanism, the wedge block is placed on the movable plate, the first guide column is obliquely inserted into the movable plate, the first guide column is inclined and arranged to diffuse outward with the central area as the center, the wedge block has a first inclined surface facing the central area, the slider has a second inclined surface opposite to the first inclined surface, the slider includes a clamping surface on the opposite side of the second inclined surface, and the clamping surface is in contact with the workpiece; the driving mechanism can drive the wedge block and the first guide column to move up and down together, and the first guide column drives the slider to move in a horizontal direction when it is lifted and lowered, and the first inclined surface is in contact with the second inclined surface when the wedge block is lifted and lowered.

[0010] In some embodiments, a limiting groove is provided on the movable plate, and the wedge block is placed in the limiting groove.

[0011] In some embodiments, the clamping mechanism further includes a pressure rod and a hinge pin. The pressure rod is arranged above the wedge block, the hinge pin is located at one end of the pressure rod close to the central area, the hinge pin is rotatably connected to the pressure rod, and when the wedge block rises, the wedge block applies a force to the tail of the pressure rod, so that the pressure rod rotates around the hinge pin, and the workpiece is synchronously pressed by the pressure rod.

[0012] In some embodiments, the clamping mechanism also includes a pressure rod return spring and a spring stopper, wherein the pressure rod return spring is inserted at the top of the pressure rod, and the pressure rod return spring is used to restore the pressure rod to its initial position; the spring stopper is arranged above the pressure rod return spring, and the spring stopper is used to block the specific structure of the pressure rod return spring.

[0013] In some embodiments, the clamping mechanism further includes second guide posts and a base plate, the placement plate is mounted on a plurality of the second guide posts, and a plurality of the second guide posts are mounted on the base plate.

[0014] Thus, the clamping structure of the present application includes multiple clamping components and a placement plate. The central area of ​​the placement plate is used to place the workpiece. Multiple clamping components clamp the workpiece synchronously on multiple sides, which can adapt to the assembly and welding of multiple scattered workpieces, that is, it can be suitable for a variety of assembly and welding scenarios.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0017] Figure 1 is a schematic structural diagram of a clamping structure according to an embodiment of the present application;

[0018] Figure 2 yes Figure 1 Schematic diagram of the cross section along line AA;

[0019] Figure 3 yes Figure 1 The schematic cross-section diagram along line BB;

[0020] Figure 4 yes Figure 1 Schematic diagram of the cross section along the CC line;

[0021] Figure 5 yes Figure 1 Schematic diagram of the cross section along line DD.

[0022] Main component reference numbers:

[0023] Clamping structure 100;

[0024] Placement plate 10, central area 11, clamping assembly 20, clamping mechanism 21, movable plate 211, limiting groove 2111, guide column stopper 2112, wedge block 212, first inclined surface 2121, first guide column 213, slider 214, second inclined surface 2141, clamping surface 2142, cushion block 2143, pressure rod 215, pressure rod tail 2151, hinge pin 216, pressure rod return spring 217, spring stopper 218, second guide column 2191, bottom plate 2192, guide column mounting seat 2193, guide sleeve 2194, driving mechanism 30. DETAILED DESCRIPTION

[0025] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0026] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance, or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0027] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense, and may refer to fixed connection, detachable connection, or integral connection; mechanical connection, electrical connection, or mutual communication; direct connection, indirect connection through an intermediate medium, internal connection between two elements, or interaction between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0028] The disclosure below provides many different embodiments or examples for realizing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present invention. In addition, the present invention may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0029] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0030] See also Figure 1 The present application provides a clamping structure 100. The clamping structure 100 includes a placement plate 10 and a plurality of clamping assemblies 20. The central area 11 of the placement plate 10 is used to place a workpiece. The placement plate 10 is fixedly disposed on the plurality of clamping assemblies 20. The placement plate 10 and the plurality of clamping assemblies 20 surround the central area 11 to form a plurality of clamping assemblies 20 to clamp the workpiece in a multi-sided synchronous manner.

[0031] Specifically, through holes are provided at corresponding positions of the placement plate 10 and the clamping components 20, and the placement plate 10 can be fixed on multiple clamping components 20 by screws or bolts passing through the through holes, or fixed on multiple clamping components 20 by other means, which is not limited here.

[0032] The number of the plurality of clamping assemblies 20 may be 2, 3, 4, 5, 6, 7, 8, 9, 10 or 11, which is not limited here. In other words, the present application sets the number of clamping assemblies 20 to clamp the workpiece by different numbers of clamping surfaces, and is thus applicable to different assembly and welding scenarios. In other words, the number of clamping assemblies 20 of the present application can be increased or decreased according to different assembly or welding scenarios, and can be applicable to the assembly and welding of multiple scattered workpieces, and can be applicable to a variety of assembly and welding scenarios.

[0033] The workpiece may include, for example, an aluminum-titanium alloy frame and a back plate in a combination product of a frame and a middle plate of a tablet computer, a mobile phone, a laptop computer, etc. The clamping structure 100 of the present application may be used to clamp the aluminum-titanium alloy frame and the back plate on multiple sides, and then the aluminum-titanium alloy frame and the back plate may be welded to achieve a more stable welding operation. The aluminum-titanium alloy frame and the back plate may be welded by, for example, friction stir welding or other welding methods, which are not limited here.

[0034] Thus, the clamping structure 100 of the present application includes a placement plate 10 and a plurality of clamping assemblies 20. The central area 11 of the placement plate 10 is used to place the workpiece. The plurality of clamping assemblies 20 clamp the workpiece synchronously on multiple sides, which can adapt to the assembly and welding of multiple scattered workpieces, that is, it can be applicable to a variety of assembly and welding scenarios.

[0035] In some embodiments of the present application, the placement plate 10 is fixedly arranged on the same horizontal plane of the plurality of clamping assemblies 20. In this way, the placement plate 10 can maintain a constant position on a certain horizontal plane of the clamping assembly 20, ensuring that the workpiece can be stably placed in the central area surrounded by the plurality of clamping assemblies 20.

[0036] See also Figure 1 In one embodiment, the plurality of clamping assemblies 20 include four, and every two clamping assemblies 20 are arranged opposite to each other. That is to say, the present application can form a central area by surrounding four clamping assemblies 20, and every two clamping assemblies 20 are arranged opposite to each other, so that the workpiece can be clamped from four sides, which can be integrated into the automated assembly and welding scene.

[0037] See also Figure 2 The clamping structure 100 further includes a driving mechanism 30, and the clamping assembly 20 includes a clamping mechanism 21. The driving mechanism 30 drives the clamping mechanism 21 to move toward the central area 11 to synchronously clamp the workpiece, or drives the clamping mechanism 21 to move synchronously away from the central area 11 to release the workpiece.

[0038] That is, each clamping assembly 20 of the present application is provided with a corresponding clamping mechanism 21, and a driving mechanism 30 can synchronously control multiple clamping mechanisms 21 to move synchronously toward the central area 11 to clamp the workpiece. Correspondingly, the present application can also synchronously control multiple clamping mechanisms 21 to move synchronously away from the central area 11 to release the workpiece through a driving mechanism 30.

[0039] In this way, the present application can drive multiple clamping mechanisms 21 through one driving mechanism 30 to synchronously clamp or release the workpiece, and the driving control is relatively simple and fast.

[0040] The driving mechanism 30 of the present application can be a cylinder or an oil cylinder. It is understandable that in the related art, in the mold industry, when the core is pulled out of the slide, in order to prevent the sticking of the mold, a spring pin structure is often added to the mold in production. Among them, the core pulling method in the inclined guide column core pulling structure has certain limitations. For example, when the stroke of the slide is large, the above-mentioned core pulling method cannot be used, because the larger the stroke, the longer the length of the inclined guide column, and the strength of the inclined guide column will become weaker as it grows. In practical applications, the inclined guide column may even break. When the inclined guide column cannot meet the strength requirements, the oil cylinder can only be used as the power to push the slide forward and backward in production. However, in the traditional structure, after the oil cylinder is used as the power, the above-mentioned spring pin structure cannot be established. That is, the driving structure in the current inclined guide column core pulling structure is limited by the strength of the inclined guide column.

[0041] That is to say, the driving mechanism 30 of the present application can be suitable for different power driving modes, and can be driven by either air cylinder or oil cylinder, and is not restricted by the clamping mechanism 21, so the driving modes are more diverse and flexible.

[0042] Please also read Figure 2 , Figure 3 and Figure 4 In some embodiments, the clamping mechanism 21 includes a movable plate 211, a wedge 212, a first guide post 213, and a slider 214. The movable plate 211 is connected to the driving mechanism 30, and the wedge 212 is placed on the movable plate 211. The first guide post 213 is obliquely inserted into the movable plate 211, and the first guide post 213 is arranged to diffuse outward with the central area 11 as the center. The wedge 212 has a first inclined surface 2121 facing the central area, and the slider 214 has a second inclined surface 2141 opposite to the first inclined surface 2121. The slider 214 includes a clamping surface 2142 on the opposite side of the second inclined surface 2141, and the clamping surface 2142 contacts the workpiece.

[0043] The width h of the clamping surface 2142 corresponding to the slider 214 can be changed according to the different thicknesses of different workpieces. For example, when the workpiece is thin, it can be replaced with a slider 214 with a smaller width of the clamping surface 2142, and when the workpiece is thick, it can be replaced with a slider 214 with a larger width of the clamping surface 2142. That is, the slider 214 of the present application can clamp the workpiece corresponding to the width of the clamping surface 2142 through the clamping surface 2142.

[0044] In one embodiment, Figure 2 and Figure 4 As shown, the slider 214 has a clamping portion protruding toward the central area 11, and the clamping portion has a clamping surface 2142 that contacts the workpiece. Since the clamping portion of the slider 214 protrudes toward the central area 11, a relatively stable bending and fixing area can be formed, and a pad 2143 can be placed in the bending and fixing area, that is, the pad 2143 can be located above the placement plate 10, so that the workpiece is placed on the pad 2143 for clamping.

[0045] It should be noted that in other embodiments of the present application, there is no need to provide a cushion block, and the slider 214 does not need to provide a clamping portion protruding toward the center area 11. The side of the slider 214 facing the center area 11 can be directly used as the clamping surface 2142 to clamp the workpiece.

[0046] The driving mechanism 30 can drive the wedge block 213 and the first guide column 213 to move up and down together. When the first guide column 213 moves up and down, it drives the slider 214 to move in the horizontal direction. When the wedge block 212 moves up and down, the first inclined surface 2121 contacts the second inclined surface 2141. That is, the clamping structure 100 of the present application is a mechanical mechanism that can convert vertical motion into horizontal motion or tilted motion by using the wedge block 213 and the inclined first guide column 213 in conjunction with the slider 214.

[0047] Specifically, when the driving mechanism 30 is a cylinder, the cylinder can drive the movable plate 211 to rise or fall, and the movable plate 211 drives the wedge block 212 and the inclined first guide column 213 to rise or fall. The first guide column 213 is inserted into the movable plate 211. When the first guide column 213 rises or falls, it drives the slider 214 to move horizontally, that is, the distance between the clamping surface 2142 of the slider 214 and the contact surface of the workpiece can be adjusted, so that the workpiece is clamped or released by the slider 214. That is, the clamping structure 100 of the present application is driven by a cylinder, and multiple sliders 214 can be driven to move by a movable plate 211.

[0048] At this time, when the cylinder drives the movable plate 211 to rise and drive the wedge block 212 to rise or fall, the first inclined surface 2121 of the wedge block 212 contacts the second inclined surface 212 of the slider 214, which can prevent the slider 214 from retreating due to the reverse force of the workpiece.

[0049] In addition, due to the self-locking effect of the wedge block 212, a large clamping pressure can be continuously provided to the workpiece, thereby solving the welding defects caused by the expansion effect of the welding tool on the spliced ​​weld during the friction stir welding process.

[0050] That is to say, the clamping structure 100 of the present application adopts the self-locking function of the wedge block 212 and the driving function of the inclined first guide column 213 to achieve synchronous self-centering clamping of multiple scattered workpieces.

[0051] In some embodiments, the movable plate 211 is provided with a limiting groove 2111, and the wedge block 212 is placed in the limiting groove 2111. In this way, the present application can further effectively fix the position of the wedge block 212 by providing the limiting groove 2111 on the movable plate 211, so that the wedge block 212 can resist the force of the slider 214, which is conducive to the stability of the clamping structure 100.

[0052] In addition, a stopper 2112 may be provided on the side of the movable plate 211 that contacts the first guide post 213. When the first guide post 213 is inserted into the movable plate 211, the guide post stopper 2112 provided on the movable plate 211 may block the first guide post 213, so that the first guide post 213 has a supporting point on the movable plate 211 during the lifting movement, and the first guide post 213 may be more stably tilted and arranged on the movable plate 211. Figure 3 As shown, the inclination angle α of the first guide column 213 relative to the movable plate 211 can be 30°, 45° or other angles, which is not limited here.

[0053] Please also read Figure 2 , Figure 3 and Figure 4 The clamping mechanism 21 further includes a pressure rod 215 and a hinge pin 216. The pressure rod 215 is arranged above the wedge block 212, and the hinge pin 216 is located at one end of the pressure rod 215 close to the central area 11, and the hinge pin 216 is rotatably connected to the pressure rod 215. When the wedge block 212 rises, the wedge block 212 applies a force to the tail 2151 of the pressure rod 215, so that the pressure rod 215 rotates around the hinge pin 216, and the workpiece is synchronously pressed by the pressure rod 215.

[0054] The pressure rod 215 may be a pressing element made of metal or other materials, which is not limited here.

[0055] It should be noted that the deflection angles of the pressing action and the resetting action of the pressing rod 215 of the present application are relatively small, and the pressing action mainly involves applying a downward pressure to press the workpiece.

[0056] In this way, the clamping mechanism 21 of the present application can apply an upward force to the tail 2151 of the pressure rod 215 when the wedge block 212 rises, so that the head of the pressure rod 215 presses the workpiece, thereby ensuring that the workpiece and the tooling of the clamping structure 100 fit firmly.

[0057] That is to say, the clamping structure 100 of the present application can realize synchronous self-centering clamping of multiple scattered workpieces through the self-locking function of the wedge block 212 and the driving function of the inclined first guide column 213, and can also drive the pressure rod 215 to clamp the workpieces.

[0058] In addition, the clamping mechanism 21 of the present application may further include a pressure rod reset spring 217 and a spring stopper 218. The pressure rod reset spring 217 may be inserted in the middle of the top of the pressure rod 215, and the pressure rod reset spring 217 is used to restore the pressure rod 215 to its initial position. Specifically, when the wedge block 212 descends, the pressure rod reset spring 217 drives the pressure rod 215 to reset.

[0059] The spring stopper 218 is arranged above the pressure rod return spring 217. The spring stopper 218 is used to block the specific structure of the pressure rod return spring 217 to prevent the pressure rod return spring 217 from being exposed outside the clamping structure 100. It is more beautiful and can protect the pressure rod return spring 217 from being easily corroded or damaged.

[0060] See also Figure 2 and Figure 5 The clamping mechanism 21 further includes a second guide column 2191 and a bottom plate 2192. The placement plate 10 is mounted on a plurality of second guide columns 2191, and a plurality of second guide columns 2191 are mounted on the bottom plate 2192.

[0061] Specifically, a guide post mounting seat 2193 corresponding to the second guide post 2191 may be further provided on the bottom plate 2192, and the second guide post 2191 may be fixedly mounted on the bottom plate 2192 through the corresponding guide post mounting seat 2193. A guide sleeve 2194 may be further provided at the place where the second guide post 2191 is connected to the placement plate 10, so that the connection between the second guide post 2191 and the placement plate 10 may be more firmly established. The second guide post 2191 and the placement plate 10 may be connected by bolts or in other ways, which are not limited here.

[0062] In this way, the placement plate 10 of the present application can be fixedly installed on the clamping structure 100 through the support of multiple second guide pillars 2191.

[0063] The above embodiments only express several implementation methods of the utility model, and the descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A clamping structure, characterized in that: The clamping structure includes a placement plate and a plurality of clamping components. The central area of ​​the placement plate is used to place the workpiece. The placement plate is fixedly arranged on the plurality of clamping components. The placement plate and the plurality of clamping components surround and form a central area. The plurality of clamping components clamp the workpiece synchronously on multiple sides. Through holes are provided at corresponding positions of the placement plate and the clamping components. The placement plate can be fixedly arranged on the plurality of clamping components by screws or bolts passing through the through holes.

2. The clamping structure according to claim 1, characterized in that: The placement plate is fixedly arranged on the same horizontal plane of the plurality of clamping assemblies.

3. The clamping structure according to claim 1, characterized in that: The plurality of clamping assemblies include four, and every two of the clamping assemblies are arranged opposite to each other.

4. The clamping structure according to claim 1, characterized in that: The clamping structure further includes a driving mechanism, and the clamping assembly includes a clamping mechanism, and the driving mechanism drives the clamping mechanism to move toward the central area for synchronous clamping, or drives the clamping mechanism to move synchronously away from the central area to release the workpiece.

5. The clamping structure according to claim 4, characterized in that: The driving mechanism is a pneumatic cylinder or an oil cylinder.

6. The clamping structure according to claim 4, characterized in that: The clamping mechanism comprises a movable plate, a wedge, a first guide post and a slider, wherein the movable plate is connected to the driving mechanism, the wedge is placed on the movable plate, the first guide post is obliquely inserted into the movable plate, the first guide post is arranged to diffuse outward with the central area as the center, the wedge has a first inclined surface facing the central area, the slider has a second inclined surface opposite to the first inclined surface, the slider comprises a clamping surface on the opposite side of the second inclined surface, and the clamping surface contacts the workpiece; The driving mechanism can drive the wedge block and the first guide column to move up and down together. When the first guide column moves up and down, it drives the sliding block to move in the horizontal direction. When the wedge block moves up and down, the first inclined surface contacts the second inclined surface.

7. The clamping structure according to claim 6, characterized in that: The movable plate is provided with a limiting groove, and the wedge block is placed in the limiting groove.

8. The clamping structure according to claim 6, characterized in that: The clamping mechanism also includes a pressure rod and a hinge pin. The pressure rod is arranged above the wedge block, and the hinge pin is located at one end of the pressure rod close to the center area. The hinge pin is rotatably connected to the pressure rod. When the wedge block rises, the wedge block applies a force to the tail of the pressure rod, causing the pressure rod to rotate around the hinge pin, thereby synchronously pressing the workpiece through the pressure rod.

9. The clamping structure according to claim 8, characterized in that: The clamping mechanism also includes a pressure rod reset spring and a spring stopper. The pressure rod reset spring is inserted at the top of the pressure rod and is used to restore the pressure rod to its initial position. The spring stopper is arranged above the pressure rod reset spring and is used to block the specific structure of the pressure rod reset spring.

10. The clamping structure according to claim 6, characterized in that: The clamping mechanism further comprises second guide posts and a bottom plate, the placement plate is mounted on a plurality of the second guide posts, and a plurality of the second guide posts are mounted on the bottom plate.

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