A fixture clamping device

Abstract

The present invention provides a jig clamp mechanism, including a clamp assembly, the clamp assembly includes a first clamping piece, a second clamping piece, a connecting rod, and a lever; the first clamping piece is connected to the connecting rod by a lever, and the connecting rod is connected to the second clamping piece; a jig clamping device includes a clamping device body, the clamping device body includes a clamp assembly, a driving component that generates external force, the driving component includes a cylinder and a mounting block, the cylinder is hinged to the mounting block, the cylinder is connected to the connecting rod, the connecting rod is driven by the cylinder to move, so that the first clamping piece and the second clamping piece move, thereby realizing the synchronous opening and closing of the first clamping piece and the second clamping piece. The mechanism is easy to use, simple in structure, and easy to maintain.

Description

Technical Field

[0001] The invention belongs to the field of assembly equipment, and in particular relates to a fixture clamping device. Background Art

[0002] In automated production, fixtures are often used to clamp carriers to prevent them from shifting after being subjected to force during processing, which would result in low processing precision. At the same time, the fixtures can also be used to position the carriers and place them at the processing position. In order to achieve automation, fixtures are widely used on assembly lines.

[0003] In the field of assembly, for box-type carriers, when assembling parts inside the box body, clamps are usually used for fixing. The clamps are closed and the claws are hooked on the edge of the box-type carrier to fix the box-type carrier. However, in daily production, in order to realize automated production and facilitate the placement of parts into the box-type carrier, the parts are usually placed into the box-type carrier from directly above the box-type carrier. In this case, if the box-type carrier is to be loaded, it is no longer possible to load from above, which makes the box-type carrier only able to be loaded from both sides. Usually, the clamping assembly is used to roughly determine the placement position of the carrier during assembly. However, in order to facilitate loading, the clamping assembly needs to be rotated at a larger angle, which makes it impossible for the clamping assembly to realize the positioning function, and there is a contradiction in the size of the rotation angle of the clamping assembly. Summary of the invention

[0004] In order to overcome the shortcomings of the prior art, the present invention proposes a jig clamp mechanism, which utilizes a single external force to simultaneously drive two clamping members to synchronously open and close. The clamping member on one side is connected to a lever so that the movement distances of the two clamping members are different. When the clamping assembly is closed, the chucks on both sides are closed at the same time to fix the carrier, making the mechanism easy to use and simple in structure.

[0005] The present invention provides a jig fixture mechanism and a fixture assembly, wherein the fixture assembly includes two clamping members, a connecting rod, a lever, and a support block;

[0006] A rotating shaft is installed on the support block, and the support block is connected to the base plate to form a fixed connection structure, so that the clamping member and the connecting rod rotate around the rotating shaft;

[0007] The two ends of the lever are connected to a clamping member and a connecting rod, the connecting rod is connected to another clamping member, and the connecting rod is driven to move by a single external force, so that the two clamping members rotate; wherein,

[0008] The force arms at both ends of the lever are different, so that the opening and closing angles of the two clamping members are different.

[0009] Preferably, the clamping member includes a first clamping member and a second clamping member; the first clamping member includes a clamp head and a first clamping rod, the clamp head is installed at one end of the first clamping rod, a slide groove is provided on one end of the lever, a connecting member is installed in the slide groove, the connecting member slides in the slide groove, the other end of the first clamping rod is connected to the connecting member, and the lever is connected to one end of the connecting rod;

[0010] The second clamping member includes a clamping head and a second clamping rod, the clamping head is connected to one end of the second clamping rod, and the other end of the second clamping rod is connected to the other end of the connecting rod.

[0011] Preferably, a lever arm at one end of the lever close to the connecting rod is smaller than a lever arm at one end of the lever close to the first clamping member.

[0012] Preferably, the first clamping member further includes a first support block, the first support block is connected to the first clamping rod, the second clamping member further includes a third support block, the third support block is connected to the second clamping rod, and the first clamping member and the second clamping member clamp the carrier after rotation.

[0013] Preferably, the clamping head at least comprises a pressing surface for pressing the horizontal surface of the carrier.

[0014] Preferably, the chuck further comprises a side pressure surface for pressing the side surface of the carrier.

[0015] Preferably, the connecting rod is connected to the second clamping rod via a connecting shaft, and an external force acts on the connecting shaft to drive the first clamping member and the second clamping member to move.

[0016] Preferably, a bearing is installed on the connecting shaft, and a joint is installed on the outer side of the bearing, and the joint is used to connect to a generating device that generates external force.

[0017] Preferably, a fixture clamping device comprises a clamping device body, the clamping device body comprises the above-mentioned clamp assembly and a driving assembly for generating external force, the driving assembly comprises a cylinder and a mounting block, the cylinder is hinged to the mounting block, and the cylinder is connected to the connecting rod.

[0018] Preferably, the clamping device body also includes an assembly component, which includes a fixed plate for placing a carrier and a positioning rod, the positioning rod is installed on the fixed plate, the positioning rod is used to limit the position of the carrier, and the clamp assembly is installed on the fixed plate.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] Beneficial effect 1: The two clamping parts are driven to open and close synchronously by a single external force. The clamping part on one side is connected to the lever, so that the movement distances of the two clamping parts are different. When the clamping assembly is closed, the clamps on both sides are closed to fix the carrier at the same time, which is convenient for taking and placing the carrier and also convenient for positioning the carrier;

[0021] Beneficial effect 2: By misaligning the first clamping member and the second clamping member, the first clamping member and the second clamping member are fixed at the diagonal positions of the carrier, making the placement of the carrier more stable;

[0022] Beneficial effect three: by installing a positioning rod on the fixed plate to limit the position of the carrier, it is convenient for the first clamping member and the second clamping member to clamp the carrier. The present invention is easy to use, simple in structure, and easy to maintain.

[0023] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings. The specific implementation of the present invention is given in detail by the following embodiments and their accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0025] Figure 1 Schematic diagram of the three-dimensional structure of the clamp assembly in one embodiment of the present invention Figure 1 ;

[0026] Figure 2 Schematic diagram of the three-dimensional structure of the clamp assembly in one embodiment of the present invention Figure 1 ;

[0027] Figure 3 An exploded schematic diagram of a clamp assembly in one embodiment of the present invention;

[0028] Figure 4 for Figure 1 A partial enlarged schematic diagram of

[0029] Figure 5 The three-dimensional structure of the clamping device body in one embodiment of the present invention is shown in FIG. Figure 1 ;

[0030] Figure 6 The three-dimensional structure of the clamping device body in one embodiment of the present invention is shown in FIG. Figure 2 ;

[0031] Figure 7 An exploded schematic diagram of a clamping device body in one embodiment of the present invention;

[0032] Figure 8 A schematic diagram of the three-dimensional structure of a driving assembly in one embodiment of the present invention;

[0033] Figure 9a This is a working principle diagram of the first clamping member under the force F of the present invention;

[0034] Figure 9b This is a working principle diagram of the second clamping member under the force F of the present invention.

[0035] As shown in the figure:

[0036] 200, clamping device body; 210, assembly component; 211, fixing plate; 212, positioning rod; 220, clamp assembly; 221, first clamping member; 2211, first clamping rod; 2212, first support block; 222, second clamping member; 2221, second clamping rod; 2222, third support block; 223, connecting rod; 224, lever; 2241, connecting member; 2242, slide groove; 225, second support block; 226, connecting shaft; 227, bearing; 228, chuck; 2281, lower pressure surface; 2282, side pressure surface; 230, drive assembly; 231, joint; 232, cylinder; 233, mounting block; 41, carrier. DETAILED DESCRIPTION

[0037] The present invention is further described in detail below in conjunction with the accompanying drawings, and the aforementioned and other purposes, features, aspects and advantages of the present invention will become more obvious, so that those skilled in the art can implement it with reference to the text of the specification. In the accompanying drawings, for the sake of clarity, the shapes and sizes can be enlarged, and the same reference numerals will be used in all figures to indicate the same or similar parts. In the following description, words such as center, thickness, height, length, front, back, rear, left, right, top, bottom, upper, lower, etc. are based on the orientation or position relationship shown in the accompanying drawings. In particular, "height" is equivalent to the size from top to bottom, "width" is equivalent to the size from left to right, and "depth" is equivalent to the size from front to back. These relative terms are for the convenience of explanation and are generally not intended to require specific orientation. Terms related to attachment, connection, etc. (for example, "connection" and "attachment") refer to the relationship between these structures directly or indirectly fixed or attached to each other through intermediate structures, and movable or rigid attachment or relationship, unless otherwise explicitly stated.

[0038] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0039] like Figure 1-4 As shown, a jig fixture mechanism includes a fixture assembly 220, the fixture assembly 220 is composed of a first clamping member 221, a second clamping member 222, a connecting rod 223, a lever 224, and a connecting shaft 226, the connecting rod 223 is connected to the connecting shaft 226, the first clamping member 221 and the second clamping member 222 are connected together through the connecting shaft 226, the first clamping member 221 includes a clamp head 228 and a first clamping rod 2211, the clamp head 228 is installed at one end of the first clamping rod 2211, and the other end of the first clamping rod 2211 is slidably connected to the lever 224 near one end, Figure 9aAs can be seen from the figure, the lever 224 is provided with a slide groove 2242 for the first clamping rod 2211 to slide. Without the slide groove 2242, the first clamping member 221 will not be able to move. The slide groove 2242 is installed with a connecting member 2241, and the connecting member 2241 is connected to the first clamping member 221, so that the connecting member 2241 slides in the slide groove 2242; the other end of the lever 224 is connected to one end of the connecting rod 223; the second clamping member 222 includes a clamp head 228 and a second clamping rod 2221, the clamp head 228 is connected to one end of the second clamping rod 2221, and the other end of the second clamping rod 2221 is connected to the connecting rod 223 through a connecting shaft 226. The other end is connected, the first clamping member 221 also includes a first support block 2212, the first support block 2212 is connected to the first clamping rod 2211, in this embodiment, the number of the clamp 228 is two, the clamp 228 is respectively connected to the first clamping rod 2211 and the second clamping rod 2221, the clamp assembly 220 includes a second support block 225, the second support block 225 is connected to the lever 224, the second clamping member 222 also includes a third support block 2222, the third support block 2222 is connected to the second clamping rod 2221, so that the movement distance of one of the clamps 228 is greater than the movement distance of the other clamp 228 In a preferred embodiment, the installation position of the first support block 2212 is close to the lever 224, the position of the second support block 225 is close to the connecting rod 223, the first support block 2212 and the third support block 2222 are respectively the rotation axes of the first clamping member 221 and the second clamping member 222, the first support block 2212 and the third support block 2222 are installed on the same horizontal plane, the distance from the first support block 2212 to the chuck 228 is equal to the distance from the third support block 2222 to the chuck 228, when the first clamping member 221 and the second clamping member 222 are closed, the two chucks 228 are on the same horizontal plane, and the chuck 228 at the same time, due to the installation position of the first support block 2212 and the second support block 225, the movement distance of the first clamping member 221 is greater than that of the second clamping member 222. When the first clamping member 221 and the second clamping member 222 release the carrier 41, the distance between the first clamping member 221 and the carrier 41 is greater than the distance between the second clamping member 222 and the carrier 41, that is, the horizontal position of the chuck 228 on the first clamping member 221 is lower than the horizontal position of the chuck 228 on the second clamping member 222, which facilitates the removal of the carrier 41 from one side of the first clamping member 221 and the loading of the carrier 41 to be processed.

[0040] It should be pointed out that a rotating shaft is installed on the above-mentioned first support block 2212, the second support block 225, and the third support block 2222, so that the first clamping member 221, the lever 224, and the second clamping member 222 can be easily rotated around their respective rotating shafts. At the same time, the first support block 2212, the second support block 225, and the third support block 2222 are fixed structures, which makes it easy for the first clamping member 221, the lever 224, and the second clamping member 222 to rotate around the support block as a fulcrum.

[0041] like Figure 4 As shown, in a preferred embodiment, the chuck 228 at least includes a lower pressure surface 2281 for pressing the horizontal surface of the carrier 41, and the lower pressure surface 2281 contacts the plane of the carrier 41 to limit the movement of the carrier 41 in the vertical direction; the chuck 228 also includes a side pressure surface 2282 for squeezing the side surfaces of the carrier 41, and the side surfaces of the carrier 41 are squeezed by the side pressure surface 2282 of the chuck 228 to limit the movement of the carrier 41 in the horizontal direction, so that the carrier 41 is fixed by the chuck 228.

[0042] like Figure 5-7 As shown, a fixture clamping device includes a clamping device body 200, the clamping device body 200 includes an assembly component 210, a clamp component 220, and a drive component 230, wherein the clamp component 220 is as shown in FIG. Figure 1-2 A jig and fixture mechanism described in the specification, the assembly component 210 at least includes a fixed plate 211, a positioning rod 212 is installed on one side of the fixed plate 211, wherein the positioning rod 212 is installed at the same position as the carrier 41, and is connected to the carrier 41 through the positioning rod 212 to limit the horizontal position of the carrier 41; the first support block 2212 and the third support block 2222 are installed on the fixed plate 211; the driving component 230 includes a cylinder 232 and a mounting block 233, the mounting block 233 is installed on the other side of the fixed plate 211, the cylinder 232 is hinged to the mounting block 233, the cylinder 232 drives the fixture component 220 to move, when the cylinder 232 drives the fixture component 220, the cylinder 232 deviates a certain angle with the hinge point as the rotation center, as shown in Figure 8As shown, in a preferred embodiment, a bearing 227 is installed on the connecting shaft 226, and a joint 231 is installed on the outer side of the bearing 227. The joint 231 is connected to the cylinder 232, so that the cylinder 232 pushes and pulls the connecting shaft 226, and drives the first clamping member 221 and the second clamping member 222 to move at the same time, so that the first clamping member 221 and the second clamping member 222 are closed or released at the same time, thereby achieving the clamping and loosening of the carrier 41; the positioning rod 212 has a different shape, so that the carrier 41 can only be placed on the fixing plate 211 at a specific position, which plays a fool-proof role; because the cylinder 232 is arranged on the other side of the fixing plate 211, the clamp assembly 220 is convenient for the cylinder 23 2 is driven to work, the clamp assembly 220 is arranged on the same surface of the cylinder 232, but the first clamping member 221, the second clamping member 222 and the positioning rod 212 are on the same surface to fix the carrier 41, therefore, the first clamping member 221 and the second clamping member 222 are passed through the fixing plate 211, and in order to facilitate the rotation of the first clamping member 221 and the second clamping member 222, a through groove is opened on the fixing plate 211 at the position corresponding to the first clamping member 221 and the second clamping member 222 passing through, and there is a gap between the through groove and the first clamping member 221 and the second clamping member 222, so that the first clamping member 221 and the second clamping member 222 can be easily rotated to avoid interference.

[0043] As shown in Figure 9, it is a schematic diagram of the implementation of the fixture assembly 220. Figure 9a As shown in the figure, it is the movement trajectory of the first clamping member 221 after being acted upon by the force F. The connecting rod 223 is acted upon by F and moves in the direction of F, so that the lever 224 rotates with the second support block 225 as the center. Since the second support block 225 is located close to the connecting rod 223, it can be seen from the figure through the characteristics of the lever that the end of the lever 224 close to the lever 224 moves a small distance. At the same time, the other section of the lever 224 drives the first clamping rod 2211 to move with the first support block 2212 as the center. Similar to the movement of the lever 224 driven by the connecting rod 223, the movement distance of the section of the lever 224 connected to the first clamping rod 2211 is smaller than the other end of the first clamping rod 2211. Compared with the movement distance of the connecting rod 223, the movement distance of the clamp 228 on the other end of the first clamping rod 2211 is much greater than the movement distance of the connecting rod 223. Figure 9b , is the motion trajectory of the second clamping member 222. The motion principle of the second clamping member 222 is consistent with that of the first clamping member 221. Figure 9a, b. By comparing with a and b, the same force F is used to push. It is easy to see that the movement distance of the second clamping member 222 is smaller than the movement distance of the first clamping member 221. In contrast, when the first clamping member 221 and the second clamping member 222 are closed, if the two clamps 228 are on the same horizontal plane, and the third support block 2222 and the first support block 2212 are also on the same plane, so that the radius of the trajectory of the movement of the two clamps 228 is the same, then the clamp 228 on the first clamping member 221 needs to move a larger distance. It can be seen from the figure that the angle formed by the rotation of the trajectory of the first clamping rod 2211 with the first support block 2212 as the rotation center is greater than the angle formed by the rotation of the second clamping rod 2221 with the third support block 2222 as the rotation center. When the first clamping member 221 and the second clamping member 222 are released, the position of the clamp 228 on the first clamping member 221 in the horizontal plane is lower than the clamp 228 on the second clamping member 222.

[0044] The present invention provides a clamp assembly with different opening and closing angles and a fixture clamping mechanism, which can simultaneously drive two clamping members to open and close synchronously through a single external force, and connect the clamping member on one side with a lever so that the movement distances of the two clamping members are different. When the clamp assembly is closed, the clamps on both sides are closed and fixed to the carrier at the same time, which is convenient for taking and placing the carrier and also convenient for positioning the carrier; the first clamping member and the second clamping member are misaligned so that the first clamping member and the second clamping member are fixed at the diagonal positions of the carrier, so that the placement of the carrier is more stable; the positioning rod is installed on the fixed plate to limit the position of the carrier, so that the first clamping member and the second clamping member can clamp the carrier conveniently; the positioning rods with different shapes are used to limit the position of the carrier, so as to prevent mistakes in work placement. The present invention is easy to use, simple in structure, and convenient for maintenance.

[0045] The above are only preferred embodiments of the present invention and are not intended to limit the present invention in any form. Any ordinary technician in the industry can smoothly implement the present invention as shown in the drawings and above. However, any equivalent changes, modifications and evolutions made by technicians familiar with the profession without departing from the scope of the technical solution of the present invention using the technical content disclosed above are all equivalent embodiments of the present invention. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present invention are still within the protection scope of the technical solution of the present invention.

Claims

1. A fixture clamping device, comprising a clamping device body (200), characterized in that: The clamping device body (200) comprises a clamp assembly (220) and a driving assembly (230) for generating external force; The clamp assembly (220) comprises two clamping members, a connecting rod (223), a lever (224), and a support block; A rotating shaft is installed on the support block, and the support block is connected to the base plate to form a fixed connection structure, so that the clamping member and the connecting rod (223) rotate around the rotating shaft; The two ends of the lever (224) are connected to a clamping member and a connecting rod (223), and the connecting rod (223) is connected to another clamping member. The connecting rod (223) is driven to move by a single external force, so that the two clamping members rotate; wherein, The force arms at both ends of the lever (224) are different, so that the opening and closing angles of the two clamping members are different; The clamping member comprises a first clamping member (221) and a second clamping member (222); the first clamping member (221) comprises a clamping head (228) and a first clamping rod (2211); the clamping head (228) is mounted on one end of the first clamping rod (2211); a sliding groove (2242) is provided on one end of the lever (224); a connecting member (2241) is installed in the sliding groove (2242); the connecting member (2241) slides in the sliding groove (2242); the other end of the first clamping rod (2211) is connected to the connecting member (2241); the lever (224) is connected to one end of the connecting rod (223); The second clamping member (222) comprises a clamping head (228) and a second clamping rod (2221); the clamping head (228) is connected to one end of the second clamping rod (2221); and the other end of the second clamping rod (2221) is connected to the other end of the connecting rod (223); The support block comprises a first support block (2212), a second support block (225), and a third support block (2222); the first support block (2212) is connected to the first clamping rod (2211), the third support block (2222) is connected to the second clamping rod (2221), and the second support block (225) is connected to the lever (224); The driving assembly (230) comprises a cylinder (232) and a mounting block (233); the cylinder (232) and the mounting block (233) are hingedly connected; and the cylinder (232) and the connecting rod (223) are connected; The clamping device body (200) further comprises an assembly component (210), wherein the assembly component (210) comprises a fixing plate (211) for placing a carrier (41), and a positioning rod (212), wherein the positioning rod (212) is mounted on the fixing plate (211), and the positioning rod (212) is used to limit the position of the carrier (41), and the clamping component (220) is mounted on the fixing plate (211); The first support block (2212) and the third support block (2222) are mounted on the fixed plate (211); the driving assembly (230) comprises a cylinder (232) and a mounting block (233); the mounting block (233) is mounted on the other side of the fixed plate (211); the cylinder (232) and the mounting block (233) are hingedly connected; the cylinder (232) drives the clamp assembly (220) to move; when the cylinder (232) drives the clamp assembly (220), the cylinder (232) deviates by a certain angle with the hinge point as the rotation center; A through slot is provided on the fixing plate (211) at a position corresponding to the position through which the first clamping member (221) and the second clamping member (222) pass, and there is a gap between the through slot and the first clamping member (221) and the second clamping member (222).

2. A fixture clamping device as claimed in claim 1, characterized in that: The lever arm of the lever (224) close to one end of the connecting rod (223) is smaller than the lever arm of the lever (224) close to one end of the first clamping member (221).

3. A fixture clamping device as claimed in claim 1, characterized in that: The clamping head (228) at least comprises a pressing surface (2281) that contacts the carrier (41); when the pressing surface (2281) presses the carrier (41), a pressing force perpendicular to the pressing surface (2281) is provided to fix the carrier (41).

4. A fixture clamping device as claimed in claim 3, characterized in that: The clamping head (228) further comprises a side pressure surface (2282) contacting the side surface of the carrier (41); when the two side pressure surfaces (2282) press the carrier (41), they provide two corresponding pressing forces perpendicular to the side surface of the carrier (41), thereby clamping the carrier (41).

5. A fixture clamping device as claimed in claim 1, characterized in that: The connecting rod (223) is connected to the second clamping rod (2221) via a connecting shaft (226), and an external force acts on the connecting shaft (226) to drive the first clamping member (221) and the second clamping member (222) to move.

6. A fixture clamping device as claimed in claim 5, characterized in that: A bearing (227) is installed on the connecting shaft (226), and a joint (231) is installed outside the bearing (227), and the joint (231) is used to connect to a generating device that generates an external force.

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