Positioning device with four-side opening realized by pushing one side

Abstract

The utility model discloses a positioning device of realizing four -edge opening of pushing one side, including bottom plate, two drive boards, platen, two placing platform and two push block, two drive boards opposite left and right are located bottom plate upper surface, and can move along the front -back direction, two drive boards upper surface rear end all are equipped with first clamping piece, two drive boards upper surface front end all are equipped with mounting groove, be equipped with second clamping piece in mounting groove, second clamping piece lower extreme can be forward and backward sliding's connection in bottom plate, and the left and right sides of each drive board all are equipped with two third clamping pieces, two third clamping pieces lower extreme all can left and right slide's connection in bottom plate, and one end bears in drive board side, platen is located drive board top, and forms installation gap between drive board and bottom plate, and two drive boards all are located installation gap. The utility model only needs to drive push block, can realize four -edge simultaneously loose or clamping, need not respectively operate multiple drive mechanism, has simplified the operation process, has improved the overall production efficiency of production line, is helpful to enterprise increase yield, satisfies market demand.

Description

Technical Field

[0001] This utility model relates to the field of clamps, specifically to a positioning device that opens on all four sides by pushing one side. Background Technology

[0002] In modern industrial production, workpiece machining is a crucial step, and the stable fixation of the workpiece is a fundamental prerequisite for ensuring machining quality, improving production efficiency, and guaranteeing the accuracy of subsequent component installation. During various machining operations, the workpiece typically needs to be securely fixed to a support plate to prevent it from moving or vibrating due to external forces during machining, which could affect machining accuracy or even lead to workpiece scrap.

[0003] Currently, a common practice to achieve stable workpiece fixation is to clamp the workpiece on all four sides. This four-sided clamping method can apply force to the workpiece from multiple directions, ensuring even force distribution and thus more reliably fixing it to the support plate. This provides a stable reference for subsequent positioning operations and the installation of other accessories.

[0004] However, existing workpiece clamping devices have a significant technical drawback in achieving four-sided clamping and release. Because the clamping directions on the four sides of the workpiece are different, existing devices often require separate driving operations for each clamping mechanism. That is, when clamping the workpiece, the clamping mechanisms in different directions need to be driven sequentially to apply clamping force from their respective directions; similarly, when releasing the workpiece after processing, the corresponding clamping mechanisms need to be driven sequentially in a specific order to release the clamp. This multi-stage operation consumes a significant amount of time in actual production to complete the clamping and releasing process. In large-scale production, this significantly impacts the overall production line efficiency, leading to extended product production cycles and failing to meet market demands for rapid product delivery.

[0005] Therefore, developing a fixing device that can efficiently and conveniently clamp and release workpieces on all four sides has significant practical implications and broad market application prospects. Utility Model Content

[0006] This invention aims to at least partially solve one of the technical problems in related technologies. Therefore, the purpose of this invention is to provide a positioning device that allows opening on all four sides by pushing one side.

[0007] To achieve the above objectives, a positioning device that opens on all four sides by pushing one side, according to an embodiment of the present utility model, includes a base plate, two drive plates, a support plate, two placement platforms, and two push blocks.

[0008] The two drive plates are disposed opposite each other on the upper surface of the base plate and can move in the front-back direction. The rear end of the upper surface of each drive plate is provided with a first clamping member, and the front end of the upper surface of each drive plate is provided with a mounting groove. The mounting groove is provided with a second clamping member. The lower end of the second clamping member is slidably connected to the base plate. Each drive plate is provided with two third clamping members on the left and right sides. The lower ends of the two third clamping members can be slidably connected to the base plate in the left and right directions, and one end abuts against the side of the drive plate.

[0009] The tray is positioned above the drive plate and forms an installation gap between the drive plate and the base plate. Both drive plates are positioned within the installation gap, and the upper ends of the first clamping member, the second clamping member, and the third clamping member all extend above the tray.

[0010] Both placement platforms are located on the upper surface of the pallet and are used to place workpieces. The two placement platforms and the two drive plates are arranged opposite each other.

[0011] Both of the aforementioned push blocks are disposed on the two aforementioned drive plates, and one end extends toward the opposite side of the two aforementioned drive plates, so as to drive the drive plates to move in the front-back direction through the push blocks.

[0012] Specifically, when a pushing force is applied to the push block to move the drive plate backward, the drive plate can simultaneously drive the first clamping member, the second clamping member, and the third clamping member away from the workpiece. When the drive plate moves forward, the first clamping member, the second clamping member, and the third clamping member are all clamped to the side of the workpiece.

[0013] In addition, the positioning device that opens on all four sides by pushing one side according to the above embodiments of the present invention may also have the following additional technical features:

[0014] According to one embodiment of the present invention, the bottom surfaces of the two drive plates are connected to the mounting platform via a first slide rail, so that the drive plates can slide in the front-back direction.

[0015] According to one embodiment of the present invention, each of the two first clamping members includes a first base, a first clamping block, and a first elastic member.

[0016] The first base is connected to the rear end of the upper surface of the drive block.

[0017] The first clamping block is connected to the upper end of the first base and is used to clamp the rear side of the workpiece.

[0018] The base plate has two first limiting blocks at its rear end. The two first limiting blocks are arranged opposite to the two drive plates. The first elastic element is connected between the first limiting blocks and the drive plates. When the pushing force applied to the push block is removed, the first elastic element can drive the drive plate to reset.

[0019] According to one embodiment of the present invention, each of the two second clamping members includes a second base, a second clamping block, and a second elastic member.

[0020] The lower end of the second base is located in the mounting groove, and the lower end is connected to the base plate through the second slide rail, so that the second clamping member can slide in the front-back direction.

[0021] The second clamping block is located on the upper end of the first base and is used to clamp the front side of the workpiece.

[0022] The second elastic element is connected between the second base and the front wall of the mounting groove.

[0023] According to one embodiment of the present invention, a drive arm is also included. The second base has a vertically extending rotating shaft on its side. The middle part of the drive arm is connected to the upper end of the rotating shaft and can rotate along the axis of the rotating shaft.

[0024] One end of the drive arm is movably connected to one end of the push block, and the other end of the drive arm extends to the rear side of the second base.

[0025] When the push block moves backward, it can push the drive arm to rotate along the axis of the rotating shaft, so that the other end of the drive arm pushes the second clamping member forward.

[0026] According to one embodiment of the present invention, a connecting groove is provided at one end of the drive arm, the connecting groove extends along the length direction of the drive arm, and a first guide wheel that can rotate along its own axis is provided on the upper surface of one end of the push block. The first guide wheel is located in the connecting groove and contacts the groove wall of the connecting groove, so as to push the drive arm to rotate along the axis of the rotating shaft.

[0027] According to one embodiment of the present invention, each of the third clamping members includes a third base, a third clamping block, and a third elastic member.

[0028] The lower end of the third base is connected to the base plate via a third slide rail, so that the third base can slide on the base plate in the left and right direction.

[0029] The third clamping block is located on the upper end of the third base and is used to clamp the left / right side of the workpiece.

[0030] Each of the third clamping blocks is provided with a second limiting block on one side. The second limiting block is disposed opposite to the side of the third base away from the drive plate. The third elastic element is connected between the second limiting block and the third base.

[0031] According to one embodiment of the present invention, a second guide wheel is further included, which is disposed on the surface opposite to the third base and the drive plate.

[0032] The drive plate and the side opposite to the second guide wheel both form a ramp. The ramp gradually slopes from front to back towards the centerline of the drive plate in the front-back direction, and the second guide wheel abuts against the ramp.

[0033] According to one embodiment of the present invention, both of the placement platforms are provided with a plurality of suction cups on their surfaces for adsorbing the workpiece placed on the placement platform.

[0034] According to one embodiment of the present invention, support columns are provided at the four corners of the base plate, and the upper ends of the support columns are connected to the support plate to form the installation gap between the base plate and the support plate.

[0035] According to an embodiment of this utility model, a positioning device that opens on all four sides by pushing one side is provided. In use, only a pushing force is applied to the pushing block to push the driving plate on one side to move back and forth, which can simultaneously drive the first clamping member, the second clamping member, and the third clamping member to move away from or closer to the workpiece, so that all four sides can be released or clamped at the same time. There is no need to operate multiple driving mechanisms separately, which simplifies the operation process and reduces the difficulty of operation. It is especially suitable for the requirements of convenient operation in large-scale production. Due to the significant reduction in operation steps, the loading, unloading, and positioning time of the workpiece are significantly shortened, thereby speeding up the entire production cycle, improving the overall production efficiency of the production line, and helping enterprises increase output and meet market demand.

[0036] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0038] Figure 1 This is an isometric view of the overall structure in an embodiment of this utility model;

[0039] Figure 2 This is a schematic diagram of the base plate and support plate separated in an embodiment of this utility model;

[0040] Figure 3 This is a schematic diagram of the installation of the base plate and the drive plate in an embodiment of this utility model;

[0041] Figure 4 This is a schematic diagram of the mounting plane of the base plate and the drive plate in an embodiment of this utility model;

[0042] Figure 5 This is a schematic diagram showing the connection between the drive plate and the first and second clamping members in an embodiment of this utility model;

[0043] Figure 6 This is a schematic diagram of the connection between the first slide rail and the drive plate in an embodiment of this utility model;

[0044] Figure 7 This is a schematic diagram of the overall structure of the drive board in an embodiment of this utility model;

[0045] Figure 8 This is a schematic diagram of the overall structure of the drive arm in an embodiment of this utility model;

[0046] Figure 9 This is a schematic diagram of the overall structure of the second clamping member in an embodiment of this utility model;

[0047] Figure 10 This is a schematic diagram of the overall structure of the third clamping member in this embodiment of the present invention;

[0048] Figure 11 This is a schematic diagram of the overall structure of the base plate in an embodiment of this utility model.

[0049] Icon labels:

[0050] Base plate 10;

[0051] First limiting block 11;

[0052] Second limiting block 12;

[0053] Support column 13;

[0054] Driver board 20;

[0055] First clamping component 21;

[0056] First base 211;

[0057] First clamping block 212;

[0058] First elastic element 213;

[0059] Second clamping element 22;

[0060] Second base 221;

[0061] Second slide rail 222;

[0062] Second clamping block 223;

[0063] Second elastic element 224;

[0064] Drive arm 225;

[0065] Connection slot 2251;

[0066] Shaft 226;

[0067] Third clamping component 23;

[0068] Third base 231;

[0069] Third slide rail 232;

[0070] Third clamping block 233;

[0071] Third elastic element 234;

[0072] Second guide wheel 235;

[0073] Mounting slot 24;

[0074] Push block 25;

[0075] First guide wheel 251;

[0076] First slide rail 26;

[0077] Slope section 27;

[0078] Pallet 30;

[0079] Placement platform 31;

[0080] Suction cup 311.

[0081] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0082] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0083] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "circumferential", "radial", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0084] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0085] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0086] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0087] The following describes in detail, with reference to the accompanying drawings, a positioning device for opening all four sides by pushing one side, according to an embodiment of the present invention.

[0088] Reference Figures 1 to 11As shown, a positioning device that opens to four sides by pushing one side according to an embodiment of the present invention includes a base plate 10, two drive plates 20, a support plate 30, two placement platforms 31, and two push blocks 25. The base plate 10 is suitable for fixing on a machine base.

[0089] Two drive plates 20 are disposed opposite each other on the upper surface of the base plate 10 and can move in the front-back direction. Each of the two drive plates 20 has a first clamping member 21 at the rear end of its upper surface and a mounting groove 24 at the front end of its upper surface. Each mounting groove 24 has a second clamping member 22. The lower end of the second clamping member 22 is slidably connected to the base plate 10. Each drive plate 20 has two third clamping members 23 on its left and right sides. The lower ends of the two third clamping members 23 are slidably connected to the base plate 10, and one end abuts against the side of the drive plate 20.

[0090] The pallet 30 is disposed above the drive plate 20 and forms an installation gap between the drive plate 20 and the base plate 10. Both drive plates 20 are disposed within the installation gap. The upper ends of the first clamping member 21, the second clamping member 22 and the third clamping member 23 all extend above the pallet 30.

[0091] Both placement platforms 31 are located on the upper surface of the pallet 30 for placing workpieces. The two placement platforms 31 and the two drive plates 20 are arranged vertically opposite each other.

[0092] Both push blocks 25 are disposed on the two drive plates 20, and one end extends toward the opposite side of the two drive plates 20, so as to drive the drive plates 20 to move in the front-back direction through the push blocks 25.

[0093] When a pushing force is applied to the pushing block 25 to move the driving plate 20 backward, the driving plate 20 can simultaneously drive the first clamping member 21, the second clamping member 22, and the third clamping member 23 away from the workpiece. When the driving plate 20 moves forward, the first clamping member 21, the second clamping member 22, and the third clamping member 23 are all clamped to the side of the workpiece. Preferably, multiple sets of the driving plate 20, the placement table 31, and the clamping members can be provided as needed, and the specific number can be selected and set according to the processing requirements.

[0094] Based on the above, in use, only a pushing force needs to be applied to the pushing block 25 to push the drive plate 20 on one side to move back and forth, which can simultaneously drive the first clamping member 21, the second clamping member 22 and the third clamping member 23 away from or towards the workpiece, so that the four sides can be released or clamped at the same time. There is no need to operate multiple drive mechanisms separately, which simplifies the operation process and reduces the difficulty of operation. It is especially suitable for the requirements of convenient operation in large-scale production. Due to the significant reduction in operation steps, the loading, unloading and positioning time of the workpiece is significantly shortened, thereby speeding up the entire production cycle, improving the overall production efficiency of the production line, and helping enterprises increase output and meet market demand.

[0095] Preferably, in one embodiment of the present invention, the bottom surfaces of the two drive plates 20 are connected to the mounting platform via a first slide rail 26, so that the drive plates 20 can slide in the front-back direction.

[0096] Thus, the first slide rail 26 provides precise guidance for the forward and backward sliding of the drive plate 20, ensuring that the drive plate 20 moves along a predetermined straight trajectory and avoiding deviation, shaking or jamming.

[0097] Preferably, in one embodiment of the present invention, each of the two first clamping members 21 includes a first base 211, a first clamping block 212 and a first elastic member 213.

[0098] The first base 211 is connected to the rear end of the upper surface of the drive block.

[0099] The first clamping block 212 is connected to the upper end of the first base 211 and is used to clamp the rear side of the workpiece.

[0100] The base plate 10 has two first limiting blocks 11 at its rear end. The two first limiting blocks 11 are arranged opposite to the two drive plates 20. The first elastic element 213 is connected between the first limiting blocks 11 and the drive plates 20. When the pushing force applied to the push block 25 is removed, the first elastic element 213 can drive the drive plate 20 to reset.

[0101] Thus, the first clamping block 212 is directly connected to the first base 211 and acts on the rear side of the workpiece. This structure allows the clamping force to be concentrated and stably applied to the workpiece. Under normal conditions, the first elastic element 213 uses its elasticity to keep the first base 211 and the first clamping block 212 clamping the workpiece, ensuring that the workpiece will not easily shift due to vibration or external force during processing, thus improving processing accuracy and product quality. When the drive plate 20 is pushed backward, the first clamping element 21 is pushed away from the workpiece, releasing the workpiece and facilitating the removal of the processed workpiece and the placement of a new workpiece for processing.

[0102] Conversely, when the pushing force applied to the push block 25 is removed, the first elastic element 213 can automatically drive the drive plate 20 to reset, thereby driving the first clamping block 212 back to the workpiece clamping position. This automatic reset function eliminates the need for operators to manually restore the drive plate 20 and clamping components to their initial positions, greatly simplifying the operation process and improving production efficiency. This advantage is particularly evident on production lines that require frequent clamping and releasing of workpieces.

[0103] Preferably, in one embodiment of the present invention, each of the two second clamping members 22 includes a second base 221, a second clamping block 223 and a second elastic member 224.

[0104] The lower end of the second base 221 is located in the mounting groove 24, and the lower end is connected to the base plate 10 through the second slide rail 222, so that the second clamping member 22 can slide in the front-back direction.

[0105] The second clamping block 223 is located on the upper end of the first base 211 and is used to clamp the front side of the workpiece.

[0106] The second elastic element 224 is connected between the second base 221 and the front groove wall of the mounting groove 24.

[0107] Thus, the second clamping block 223 is positioned on the upper end of the second base 221 to clamp the front side of the workpiece, cooperating with the first clamping member 21 to form a clamping effect on the workpiece in the front-back direction. The second elastic member 224 is connected between the second base 221 and the front groove wall of the mounting groove 24. Under normal conditions, the second elastic member 224 is in a certain pre-compression state, which can continuously provide a stable elastic force to the second clamping block 223, ensuring that the front side of the workpiece is reliably clamped during processing, reducing workpiece displacement caused by vibration or external force, and improving processing accuracy and product quality.

[0108] The lower end of the second base 221 is connected to the base plate 10 via the second slide rail 222, allowing the second clamping member 22 to slide smoothly in the front-back direction. The second slide rail 222 provides precise guidance for the movement of the second clamping member 22, ensuring the straightness of the second clamping block 223 during movement, enabling it to accurately reach the predetermined position to clamp or release the workpiece, improving the accuracy and repeatability of the movement, and facilitating high-precision workpiece positioning.

[0109] Preferably, in one embodiment of the present invention, a drive arm 225 is further included. The second base 221 has a vertically extending rotating shaft 226 on its side. The middle part of the drive arm 225 is connected to the upper end of the rotating shaft 226 and can rotate along the axis of the rotating shaft 226.

[0110] One end of the drive arm 225 is movably connected to one end of the push block 25, and the other end of the drive arm 225 extends to the rear side of the second base 221.

[0111] When the push block 25 moves backward, it can push the drive arm 225 to rotate along the axis of the rotating shaft 226, so that the other end of the drive arm 225 pushes the second clamping member 22 forward.

[0112] In this way, the drive arm 225 can move the second clamping member 22 forward, which, in conjunction with the push block 25 pushing the drive plate 20, causes the first clamping member 21, the third clamping member 23, and other components to move. This allows multiple clamping components to work together synchronously by applying force in only one direction to the push block 25, thus completing the release or clamping operation on all four sides of the workpiece. This linkage mechanism greatly simplifies the operation process. Operators do not need to control each clamping component separately; they only need to perform a single push operation to achieve complex positioning device actions, significantly improving the convenience and efficiency of operation.

[0113] Meanwhile, the drive arm 225 is connected to the second base 221 via a rotating shaft 226 and can rotate along the axis of the rotating shaft 226. This rotating connection method can accurately transmit the movement of the push block 25. When the push block 25 moves, the drive arm 225 rotates around the rotating shaft 226, converting the linear motion of the push block 25 into a linear push on the second clamping member 22. This ensures the accuracy and reliability of the motion transmission, reduces the problem of inaccurate clamping caused by transmission errors, and helps to improve the positioning accuracy of the workpiece.

[0114] Preferably, in one embodiment of the present invention, one end of the drive arm 225 is provided with a connecting groove 2251, the connecting groove 2251 extends along the length direction of the drive arm 225, and one end of the push block 25 is provided with a first guide wheel 251 that can rotate along its own axis. The first guide wheel 251 is located in the connecting groove 2251 and contacts the groove wall of the connecting groove 2251, so as to push the drive arm 225 to rotate along the axis of the rotating shaft 226.

[0115] It should be noted that the drive arm 225 is curved overall, with one end connected to the push block 25 and the other end extending to the rear side of the second base 221. This improves the transmission effect, reduces the space occupied, and makes the overall structure more compact. The first guide wheel 251 on the push block 25 can rotate on its own axis. When the push block 25 moves, the first guide wheel 251 rolls in the connecting groove 2251 of the drive arm 225, avoiding idleness in the rotation of the drive arm 225. Compared with the traditional sliding connection method, the resistance of rolling friction is greatly reduced, making the process of the push block 25 driving the drive arm 225 to rotate easier and smoother.

[0116] Preferably, in one embodiment of the present invention, each of the third clamping members 23 includes a third base 231, a third clamping block 233 and a third elastic member 234.

[0117] The lower end of the third base 231 is connected to the base plate 10 via the third slide rail 232, so that the third base 231 can slide on the base plate 10 in the left and right direction.

[0118] The third clamping block 233 is located on the upper end of the third base 231 and is used to clamp the left / right side of the workpiece.

[0119] Each side of the third clamping block 233 is provided with a second limiting block 12. The second limiting block 12 and the side of the third base 231 opposite to the drive plate 20 are arranged opposite each other. The third elastic member 234 is connected between the second limiting block 12 and the third base 231.

[0120] Thus, since the third elastic element 234 is connected between the second limiting block 12 and the third base 231, under normal conditions, the third elastic element 234 is in a certain pre-compressed state, which can continuously provide a stable elastic force to the third clamping block 233. This elastic force allows the third clamping block 233 to firmly clamp the left or right side of the workpiece, effectively preventing the workpiece from shifting due to vibration or external force during processing, thereby ensuring processing accuracy and improving product quality.

[0121] The lower end of the third base 231 is connected to the base plate 10 via the third slide rail 232, allowing the third base 231 to slide smoothly on the base plate 10 in the left and right directions. The third slide rail 232 provides precise guidance for the movement of the third base 231, ensuring the straightness of the third clamping block 233 during movement, enabling it to accurately reach the predetermined position to clamp or release the workpiece, improving the accuracy and repeatability of the movement, and facilitating high-precision workpiece positioning.

[0122] Advantageously, the first slide rail 26, the second slide rail 222, and the third slide rail 232 described above are all composed of a track and a slider. The track is fixed on the base plate 10, while the slider is disposed on the bottom surface of the corresponding drive plate 20, the second base 221, and the third base 231, thereby realizing sliding. Preferably, the track in the second slide rail 222 can be shared with the track in the first slide rail 26. It is only necessary to connect the slider to the bottom surface of the second base 221 and slide the slider on the track in the first slide rail 26, which helps to simplify the device structure.

[0123] Preferably, in one embodiment of the present invention, a second guide wheel 235 is further included, which is disposed on the surface opposite to the third base 231 and the drive plate 20.

[0124] The drive plate 20 and the second guide wheel 235 each have a ramp 27 on their opposite sides. The ramp 27 gradually slopes towards the center line of the drive plate 20 from front to back, and the second guide wheel 235 abuts against the ramp 27.

[0125] Thus, when the drive plate 20 moves back and forth under the action of the push block 25, the ramp 27 on it changes its contact position with the second guide wheel 235. Since the ramp 27 gradually tilts towards the centerline of the drive plate 20 from front to back, the second guide wheel 235, under the pressure of the ramp 27, converts the linear motion of the drive plate 20 into the lateral motion of the third base 231 in the left-right direction, thereby driving the third clamping block 233 to clamp or release the workpiece on the left and right sides. This motion conversion method is precise and reliable, ensuring the synchronization and coordination of various actions and improving the accuracy of workpiece positioning.

[0126] The contact between the second guide wheel 235 and the ramp 27 is rolling friction. Compared with sliding friction, rolling friction has less resistance and less energy loss. Therefore, during the process of the drive plate 20 pushing the third base 231, a large motion transmission can be achieved with a small driving force, which improves the transmission efficiency, reduces energy consumption, and also reduces the labor intensity of the operator.

[0127] Preferably, in one embodiment of the present invention, both of the placement platforms 31 are provided with a plurality of suction cups 311 for adsorbing the workpiece placed on the placement platform 31.

[0128] In this way, by evenly distributing multiple suction cups 311 on the surface of the placement table 31, the workpiece can be adsorbed from multiple different positions. When the first clamping member 21, the second clamping member 22 and the third clamping member 23 are released, the workpiece is ensured to be stably placed on the placement table 31, so that the robot arm can grasp the workpiece in the future. This effectively avoids the robot arm being unable to grasp the workpiece accurately due to workpiece displacement, or even damage to the workpiece due to incorrect grasping position.

[0129] Preferably, in one embodiment of the present invention, a support column 13 is provided at each of the four corners of the base plate 10, and the upper end of the support column 13 is connected to the support plate 30 to form the installation gap between the base plate 10 and the support plate 30.

[0130] Thus, by setting support columns 13 at the four corners of the base plate 10, the load borne by the pallet 30 can be evenly distributed onto the base plate 10. The four-corner support method forms a stable frame structure, enabling the entire device to maintain good balance and stability when bearing the weight of the workpiece and the external forces generated during processing, reducing structural deformation or damage caused by uneven stress, and extending the service life of the device.

[0131] Advantageously, the first elastic element 213, the second elastic element 224 and the third elastic element 234 mentioned above are all return springs.

[0132] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0133] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A positioning device which is pushed on one side to achieve four-side opening, characterized in that, include: Base plate; Two drive plates are disposed on the upper surface of the base plate opposite to each other and can move in the front-back direction. The rear end of the upper surface of each drive plate is provided with a first clamping member, and the front end of the upper surface of each drive plate is provided with a mounting groove. The mounting groove is provided with a second clamping member. The lower end of the second clamping member is slidably connected to the base plate. Two third clamping members are provided on the left and right sides of each drive plate. The lower ends of the two third clamping members can be slidably connected to the base plate in the left and right directions, and one end abuts against the side of the drive plate. The pallet is disposed above the drive plate and forms an installation gap between the drive plate and the base plate. Both drive plates are disposed within the installation gap. The upper ends of the first clamping member, the second clamping member, and the third clamping member all extend above the pallet. Two placement platforms are provided on the upper surface of the pallet for placing workpieces. The two placement platforms and the two drive plates are arranged opposite each other vertically. Two push blocks are provided on the two drive plates, and one end of each push block extends toward the opposite side of the two drive plates, so as to drive the drive plates to move in the front-back direction through the push blocks; Specifically, when a pushing force is applied to the push block to move the drive plate backward, the drive plate can simultaneously drive the first clamping member, the second clamping member, and the third clamping member away from the workpiece. When the drive plate moves forward, the first clamping member, the second clamping member, and the third clamping member are all clamped to the side of the workpiece.

2. The positioning device of claim 1, wherein, The bottom surfaces of the two drive plates are connected to the mounting platform via a first slide rail, so that the drive plates can slide in the front-back direction.

3. The positioning device of claim 1, wherein, Both of the first clamping members include: A first base is connected to the rear end of the upper surface of the drive block; The first clamping block is connected to the upper end of the first base and is used to clamp the rear side of the workpiece. The first elastic element has two first limiting blocks at the rear end of the base plate. The two first limiting blocks are arranged opposite to the two drive plates. The first elastic element is connected between the first limiting blocks and the drive plates. When the pushing force applied to the pushing block is removed, the first elastic element can drive the drive plate to reset.

4. The positioning device of claim 1, wherein, Both of the second clamping members include: The second base has its lower end located in the mounting groove and its lower end connected to the base plate via a second slide rail, so that the second clamping member can slide in the front-back direction. The second clamping block is located on the upper end of the first base and is used to clamp the front side of the workpiece. The second elastic element is connected between the second base and the front wall of the mounting groove.

5. The positioning device of claim 4, wherein, It also includes a drive arm, and the second base has a vertically extending pivot on its side. The middle part of the drive arm is connected to the upper end of the pivot and can rotate along the axis of the pivot. One end of the drive arm is movably connected to one end of the push block, and the other end of the drive arm extends to the rear side of the second base; When the push block moves backward, it can push the drive arm to rotate along the axis of the rotating shaft, so that the other end of the drive arm pushes the second clamping member forward.

6. The positioning device of claim 5, wherein, One end of the drive arm is provided with a connecting groove, which extends along the length of the drive arm. The upper surface of one end of the push block is provided with a first guide wheel that can rotate along its own axis. The first guide wheel is located in the connecting groove and contacts the groove wall to push the drive arm to rotate along the axis of the rotating shaft.

7. The positioning device of claim 1, wherein, Each of the third clamping members includes: The third base is connected to the base plate via a third slide rail, so that the third base can slide on the base plate in the left and right directions. The third clamping block is located on the upper end of the third base and is used to clamp the left / right side of the workpiece. The third elastic element is provided with a second limiting block on one side of the third clamping block. The second limiting block is disposed opposite to the side of the third base away from the drive plate. The third elastic element is connected between the second limiting block and the third base.

8. The positioning device of claim 1, wherein, It also includes a second guide wheel, which is disposed on the surface of the third base opposite to the drive plate; The drive plate and the side opposite to the second guide wheel both form a ramp. The ramp gradually slopes from front to back towards the centerline of the drive plate in the front-back direction, and the second guide wheel abuts against the ramp.

9. The positioning device of claim 1, wherein, Both of the aforementioned placement platforms are equipped with multiple suction cups on their surfaces for adsorbing workpieces placed on the placement platforms.

10. The positioning device of claim 1, wherein, Support columns are provided at each of the four corners of the base plate, and the upper end of the support column is connected to the support plate to form the installation gap between the base plate and the support plate.

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