Positioning device with synchronous clamping

Abstract

The utility model relates to a kind of positioning devices of synchronous clamping, comprising: lifting platform subassembly, including first support, loading plate and lifting drive equipment, loading plate is located above first support, for supporting to be kept pressure product;Lifting drive equipment is installed on first support, for driving loading plate to lift;Multiple clamping subassembly, around the center of loading plate, each clamping subassembly includes second support, clamping piece and connecting rod, clamping piece is connected loading plate by translation guide mechanism, translation guide mechanism guides clamping piece to be relatively translated to loading plate in the horizontal direction close to and away from the center of loading plate, clamping piece is used to clamp the product to be kept pressure, the lower end and upper end of connecting rod are respectively connected second support and clamping piece by hinged mechanism, hinged mechanism supports connecting rod to be relatively rotated to second support and clamping piece around the horizontal direction of the translation direction of clamping piece perpendicular to it.The positioning device of the utility model, structure is more simple and compact, cost is lower, and positioning efficiency is higher.

Description

Technical Field

[0001] This utility model relates to the field of product positioning technology, and in particular to a positioning device for synchronous clamping. Background Technology

[0002] During product processing and inspection, precise positioning and stable clamping of products are typically required. When products need to be clamped from multiple sides, such as four-sided clamping, four clamping components are usually needed, arranged in pairs opposite each other. Each pair of clamping components requires at least one drive mechanism. In other words, four-sided clamping requires at least two drive mechanisms. Multiple drive mechanisms not only occupy a large amount of space but also increase costs. How to provide a compact and low-cost positioning device is a pressing technical problem that needs to be solved in this field. Utility Model Content

[0003] Therefore, this utility model provides a compact and low-cost synchronous clamping positioning device.

[0004] To solve the above-mentioned technical problems, this utility model provides a positioning device for synchronous clamping, comprising:

[0005] The lifting platform assembly includes a first support, a carrier plate, and a lifting drive device. The carrier plate is disposed above the first support and is used to support the product to be pressure-held. The lifting drive device is installed on the first support and is used to drive the carrier plate to move up and down.

[0006] Multiple clamping assemblies are evenly distributed around the center of the carrier plate. Each clamping assembly includes a second support, a clamping member, and a connecting rod. The clamping member is connected to the carrier plate via a translational guide mechanism. The translational guide mechanism guides the clamping member to translate relative to the carrier plate in a horizontal direction that approaches and moves away from the center of the carrier plate. The clamping member is used to clamp the product to be pressure-held. The lower end and upper end of the connecting rod are respectively connected to the second support and the clamping member via a hinge mechanism. The hinge mechanism supports the connecting rod to rotate relative to the second support and the clamping member in a horizontal direction that is perpendicular to the translational direction of the clamping member.

[0007] Furthermore, the carrier plate includes a central portion and a plurality of side protrusions 122. The central portion is used to support the product to be pressurized. The plurality of side protrusions 122 are arranged at intervals around the central portion on the outer side of the central portion. The translational guide mechanisms of the plurality of clamping assemblies are respectively mounted on the plurality of side protrusions 122.

[0008] Furthermore, the carrier plate is a cross-shaped carrier plate, including a central portion and four side protrusions 122, wherein the central portion and the side protrusions 122 are both rectangular.

[0009] Furthermore, the clamping member includes a flat plate portion and a vertical rod portion. The flat plate portion is located above the carrier plate. One end of the flat plate portion near the center of the carrier plate is used to clamp the product to be pressure-held. The translational guide mechanism is connected between the portion of the flat plate portion away from the center of the carrier plate and the side protrusion 122. The upper end of the vertical rod portion is connected to the flat plate portion, and the lower end of the vertical rod portion is connected to the upper end of the connecting rod.

[0010] Furthermore, the clamping member includes two vertical rods, which are located on both sides of the side protrusion 122.

[0011] Furthermore, the lifting drive device is a cylinder.

[0012] Furthermore, the translational guide mechanism includes a slide rail and a slider, the slide rail being connected to the carrier plate and the slider being connected to the clamping member.

[0013] Furthermore, the hinge mechanism is a hinge shaft.

[0014] Furthermore, the first support is a bottom support plate.

[0015] Furthermore, the second support is a bottom support rod, which is fixedly connected to the first support.

[0016] Compared with the prior art, the above-mentioned technical solution of this utility model has the following advantages: The positioning device for synchronous clamping described in this utility model lifts and lowers the carrier plate through the lifting drive device, and uses the connecting rod to synchronously drive multiple clamping parts to translate and clamp, integrating the lifting and clamping actions into a single drive mechanism, which solves the problems of bulky structure and asynchronous actions of traditional devices, and has the advantages of compact structure, low manufacturing cost and synchronous clamping action. Attached Figure Description

[0017] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0018] Figure 1 This is a schematic diagram of the synchronous clamping positioning device in this utility model clamping the product.

[0019] Figure 2 This is a schematic diagram of the synchronous clamping positioning device in this utility model releasing the product.

[0020] Explanation of reference numerals in the accompanying drawings: 11. First support; 12. Carrier plate; 121. Center part; 122. Side protrusion; 13. Lifting drive device; 21. Second support; 22. Clamping member; 221. Flat plate part; 222. Vertical rod part; 23. Connecting rod; 24. Translation guide mechanism; 241. Slide rail; 242. Slider; 25. Hinge mechanism. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments are not intended to limit the present invention.

[0022] See Figure 1 and Figure 2 The figure shows an embodiment of the synchronous clamping positioning device disclosed in this utility model.

[0023] The aforementioned synchronous clamping positioning device includes:

[0024] The lifting platform assembly includes a first support 11, a carrier plate 12, and a lifting drive device 13. The carrier plate 12 is disposed above the first support 11 and is used to support the product to be pressure-held. The lifting drive device 13 is installed on the first support 11 and is used to drive the carrier plate 12 to lift.

[0025] Multiple clamping assemblies are evenly distributed around the center of the carrier plate 12. Each clamping assembly includes a second support 21, a clamping member 22, and a connecting rod 23. The second support 21 is fixed relative to the first support 11. The clamping member 22 is connected to the carrier plate 12 through a translational guide mechanism 24. The translational guide mechanism 24 guides the clamping member 22 to translate relative to the carrier plate 12 in a horizontal direction that is close to and away from the center of the carrier plate. The clamping member 22 is used to clamp the product to be held under pressure. The lower end and the upper end of the connecting rod 23 are connected to the second support 21 and the clamping member 22 respectively through a hinge mechanism 25. The hinge mechanism 25 supports the connecting rod 23 to rotate relative to the second support 21 and the clamping member 22 in a horizontal direction that is perpendicular to the translational direction of the clamping member 22.

[0026] In the above text, the first support 11 serves as the mounting base for the lifting platform assembly. The carrier plate 12 is a support plate used to limit the downward movement of the product and support its weight. The lifting drive device 13 is a power device, with its body mounted on the first support 11 and its telescopic end connected to the carrier plate 12. The telescopic end of the lifting drive device 13 can extend and retract in the vertical direction, thereby driving the carrier plate 12 to rise and fall.

[0027] The evenly distributed arrangement of multiple clamping components means that multiple clamping components are symmetrically distributed with the center of the carrier plate as the reference, ensuring that the clamping force is evenly applied to the edge of the product. The second support 21 forms a rigid connection with the first support 11, providing a stable support base for the connecting rod 23. The second support 21 is the mounting base for the clamping components, and the clamping member 22 is a limiting abutment member used to restrict the translation of the product. The connecting rod 23 is used to transmit power and change the motion mode. The translation guide mechanism 24 is a constraint device that restricts the clamping member 22 to move only in the horizontal direction, ensuring that the clamping member 22 does not move in other directions during the lifting and lowering of the carrier plate. The hinge mechanism 25 is a connecting component that allows the connecting rod 23 to rotate freely in the vertical plane.

[0028] Specifically, the clamping member 22 is constrained by the translation guide mechanism 24 to maintain a horizontal movement trend, and the lower end of the connecting rod 23 is constrained by the second support 21. When the lifting drive device 13 drives the carrier plate 12 to descend, the clamping member 22 descends with the carrier plate 12, the upper end of the connecting rod 23 decreases in height and rotates in the forward direction relative to the second support 21, and the connecting rod 23 forces the clamping member 22 to translate along the translation guide mechanism 24 towards the center of the carrier plate to clamp the product. When the lifting drive device 13 drives the carrier plate 12 to rise, the clamping member 22 descends with the carrier plate 12, the upper end of the connecting rod 23 increases in height, the upper end of the connecting rod 23 increases in height and rotates in the reverse direction relative to the second support 21, and the connecting rod 23 forces the clamping member 22 to translate along the translation guide mechanism 24 away from the center of the carrier plate to release the product.

[0029] Through the above technical solution, the connecting rod 23 converts the vertical displacement of the carrier plate 12 into the horizontal displacement of the clamping member 22, realizing synchronous control of lifting and clamping. The translational guide mechanism 24 and the hinge mechanism 25 cooperate to ensure accurate motion trajectory and avoid misalignment during clamping. The evenly distributed design of multiple clamping components improves clamping stability and is suitable for the precise positioning requirements of products of different sizes. This device simplifies the control system through mechanical linkage, reducing equipment manufacturing costs and maintenance difficulty.

[0030] In this embodiment, the carrier plate 12 includes a central portion 121 and a plurality of side protrusions 122. The central portion 121 is used to support the product to be pressurized. The plurality of side protrusions 122 are provided on the outside of the central portion 121 at intervals around it. The translation guide mechanism 24 of the plurality of clamping components is respectively mounted on the plurality of side protrusions 122.

[0031] In the above text, the central portion 121 refers to the area located in the middle of the carrier plate 12 that directly supports the product to be held under pressure, and its area is set according to the product size. The side protrusions 122 refer to the mounting platforms that extend outward from the central portion, and each side protrusion 122 provides an independent mounting base for the translation guide mechanism 24.

[0032] Specifically, the carrier plate 12 is divided into a central bearing area and an outer mounting area. The central portion 121 serves as the product support surface, and the side protrusions 122 extend outward to form four independent mounting positions. Translation guide mechanisms 24 are respectively installed on the upper surface of the side protrusions 122, and the four side protrusions 122 are symmetrically distributed around the central portion 121 to ensure that the clamping force is evenly applied to the edge of the product. Gaps are reserved between the different side protrusions 122.

[0033] Through the above technical solution, the carrier plate 12 is configured to include a central part 121 and a side protrusion 122, and a gap is reserved between the side protrusions 122 to facilitate the connection between the clamping member 22 and the connecting rod 23.

[0034] In this embodiment, the carrier plate 12 is a cross-shaped carrier plate, including a central portion 121 and four side protrusions 122, wherein the central portion 121 and the side protrusions 122 are both rectangular.

[0035] In the above text, the cross-shaped carrier plate refers to a symmetrical structure formed by the orthogonal extension of the central portion 121 and four side protrusions 122. Specifically, it can be achieved by welding four rectangular plates to the central rectangular block or by integral molding. Its orthogonal layout provides a uniformly distributed mounting reference for the clamping assembly. Here, the central portion 121 refers to the rectangular plate located at the geometric center of the cross-shaped carrier plate, and the side protrusions 122 refer to the rectangular plates extending from the central portion 121 in four directions.

[0036] By using the above technical solution, the carrier plate 12 is set as a cross-shaped carrier plate, which can ensure the central symmetry structure of the carrier plate 12 and can install four of the above clamping components.

[0037] In this embodiment, the clamping member 22 includes a flat plate portion 221 and a vertical rod portion 222. The flat plate portion 221 is located above the carrier plate 12. The end of the flat plate portion 221 near the center of the carrier plate is used to clamp the product to be pressure-held. The translational guide mechanism 24 is connected between the portion of the flat plate portion 221 away from the center of the carrier plate and the side protrusion 122. The upper end of the vertical rod portion 222 is connected to the flat plate portion 221, and the lower end of the vertical rod portion 222 is connected to the upper end of the connecting rod 23.

[0038] In the above text, the flat plate portion 221 refers to a rigid member with a planar load-bearing structure, and a clamping contact surface is formed on the side near the center of the carrier plate. The vertical rod portion 222 refers to a rigid connecting member extending perpendicularly to the flat plate portion 221. The vertical arrangement of the vertical rod portion 222 allows the driving force of the connecting rod 23 to be transmitted axially to the clamping member 22.

[0039] Specifically, when the carrier plate 12 drives the clamping member 22 to rise and fall, the connecting rod 23 transmits horizontal thrust to the clamping member 22 through the vertical rod part 222.

[0040] Through the above technical solution, the clamping member 22 includes a flat plate portion 221 and a vertical rod portion 222, which realizes the contact between the clamping member 22 and the product and the connection with the connecting rod 23.

[0041] In this embodiment, the clamping member 22 includes two vertical rod portions 222, which are located on both sides of the lateral protrusion 122.

[0042] In the above text, the flat plate 221 is located above the convex side 122, and the two vertical rods 222 are distributed on both sides of the convex side 122. The flat plate 221 is connected to the connecting rod 23 through the two vertical rods 222, so that the force is more balanced.

[0043] Specifically, the flat plate portion 221 of the clamping member 22 is slidably connected to the side protrusion 122 via a translation guide mechanism 24. Two vertical rod portions 222 are respectively fixed to the two edges of the flat plate portion 221 away from the center of the carrier plate and are hinged to the upper end of the connecting rod 23. When the carrier plate 12 is raised or lowered, the connecting rod 23 drives the vertical rod portions 222 via the hinge shaft, causing the clamping member 22 to translate horizontally. Since the two vertical rod portions 222 are distributed on both sides of the side protrusion 122, the lateral force experienced by the clamping member 22 during translation is balanced by the double-sided support structure, avoiding unilateral force.

[0044] The above technical solution effectively balances the lateral load of the clamping components through the symmetrical support structure of the double-sided vertical rods, improves the synchronization and reliability of the clamping action, reduces the wear of the translation guide mechanism, and extends the service life of the device.

[0045] In this embodiment, the lifting drive device 13 is a cylinder.

[0046] In the above text, a cylinder refers to an actuator that uses compressed air to drive a piston in linear reciprocating motion. Specifically, it can be implemented using a double-acting cylinder or a single-acting cylinder, directly driving the lifting and lowering of the carrier plate 12 through pneumatic transmission. The linear motion characteristics of the cylinder are matched with the vertical lifting and lowering requirements of the carrier plate 12, eliminating the need for intermediate transmission components such as gears, lead screws, or connecting rods, thus simplifying the structure of the drive system.

[0047] Specifically, the piston rod end of the cylinder is directly connected to the carrier plate 12. When compressed air enters the cylinder cavity, the piston rod pushes the carrier plate 12 to move vertically. Since the cylinder itself has linear output characteristics, the lifting and lowering action of the carrier plate 12 can be achieved quickly by simply adjusting the air source pressure.

[0048] By using the above technical solution, the lifting drive device 13 is set as a cylinder. The low cost of the cylinder reduces the overall manufacturing cost of the device, and its fast-response motion characteristics shorten the connection time between lifting and clamping actions, thereby improving the efficiency of the positioning process.

[0049] In this embodiment, the translational guide mechanism 24 includes a slide rail 241 and a slider 242. The slide rail 241 is connected to the carrier plate 12, and the slider 242 is connected to the clamping member 22.

[0050] The slide rail 241 refers to the linear guide structure fixed on the carrier plate 12, which can be implemented using a dovetail-shaped slide rail. Its function is to provide a rigid guide reference for the translational movement of the clamping member. The slider 242 refers to the sliding component installed on the clamping member 22, which can be implemented using a dovetail-shaped slider. Its function is to convert the lifting movement of the carrier plate 12 into the horizontal displacement of the clamping member 22 through cooperation with the slide rail 241.

[0051] Specifically, when the lifting drive device 13 moves the carrier plate 12 vertically, the slide rail 241 rises and falls synchronously with the carrier plate 12. Since the slider 242 is fixedly connected to the clamping member 22 and maintains a sliding engagement with the slide rail, the lifting movement of the carrier plate 12 forces the slider 242 to slide relative to the slide rail 241. This sliding constraint transforms the vertical movement of the carrier plate 12 into a horizontal translation of the clamping member 22 along the extension direction of the slide rail, thereby enabling the clamping member 22 to automatically perform clamping or releasing actions during the lifting and lowering of the carrier plate.

[0052] The above technical solution sets the translation guide mechanism 24 to include a slide rail 241 and a slider 242, which has a relatively compact structure and high connection reliability.

[0053] In this embodiment, the hinge mechanism 25 is a hinge shaft.

[0054] In the above text, the hinge shaft refers to a cylindrical connector used to connect two mechanical parts and allow rotation about a single axis. Specifically, it can be implemented using a steel shaft with a bushing or bearing. By limiting the direction of rotation to a horizontal axis perpendicular to the translation of the clamping part, it is ensured that the connecting rod 23 rotates only in this plane.

[0055] Specifically, the hinge shaft is installed between the connecting rod 23 and the second support 21, and between the connecting rod 23 and the clamping member 22, forming a fixed rotation axis. When the lifting drive device 13 drives the carrier plate 12 to rise or fall, the carrier plate 12 guides the clamping member 22 to move horizontally through the translation guide mechanism 24. At the same time, the connecting rod 23 swings around the fixed axis under the constraint of the hinge shaft, so that the translational movement of the clamping member 22 and the lifting movement of the carrier plate 12 are linked.

[0056] By using the above technical solution, the hinge mechanism 25 is set as the hinge axis, which enables reliable rotation of the connecting rod 23, while keeping the cost low.

[0057] In this embodiment, the first support 11 is a bottom support plate.

[0058] In the above description, the bottom support plate is a plate-like structure that provides basic support for the lifting platform assembly through a large contact surface. This structure replaces the traditional frame-type support with planar contact, which can evenly distribute the reaction force generated by the lifting drive equipment.

[0059] Specifically, the bottom support plate is fixedly connected to the lifting drive device 13, and its planar extension direction is perpendicular to the lifting direction of the carrier plate 12. When the carrier plate 12 performs a lifting action, the bottom support plate bears the force transmitted by the lifting drive device 13 through its own planar rigidity, avoiding the deformation risk caused by the concentrated force of traditional rod-shaped supports.

[0060] Through the above technical solution, the first support 11 is a bottom support plate, and the continuous support surface of the plate structure forms a stable foundation platform, so that the carrier plate 12 maintains vertical guidance accuracy during the lifting process, while reducing the number of support components.

[0061] In this embodiment, the second support 21 is a bottom support rod, which is fixedly connected to the first support 11.

[0062] In the above text, the bottom support rod is a vertical rod and is fixedly connected to the first support.

[0063] Specifically, when the lifting platform assembly moves the carrier plate 12 up and down, the clamping member 22 achieves translational movement through the hinged connection between the connecting rod 23 and the bottom support rod. Because the support rod occupies little space, multiple clamping components can be compactly arranged around the center of the carrier plate. The fixed connection method of the bottom support rod avoids shaking during clamping, making the clamping action stable and reliable.

[0064] The above technical solution achieves stable fixation and synchronous operation of the clamping assembly through the optimized design of the bottom support rod.

[0065] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A positioning device for synchronous clamping, characterized in that, include: The lifting platform assembly includes a first support, a carrier plate, and a lifting drive device. The carrier plate is disposed above the first support and is used to support the product to be pressure-held. The lifting drive device is installed on the first support and is used to drive the carrier plate to move up and down. Multiple clamping assemblies are evenly distributed around the center of the carrier plate. Each clamping assembly includes a second support, a clamping member, and a connecting rod. The clamping member is connected to the carrier plate via a translational guide mechanism. The translational guide mechanism guides the clamping member to translate relative to the carrier plate in a horizontal direction that approaches and moves away from the center of the carrier plate. The clamping member is used to clamp the product to be pressure-held. The lower end and upper end of the connecting rod are respectively connected to the second support and the clamping member via a hinge mechanism. The hinge mechanism supports the connecting rod to rotate relative to the second support and the clamping member in a horizontal direction that is perpendicular to the translational direction of the clamping member.

2. The positioning device for synchronous clamping according to claim 1, characterized in that, The carrier plate includes a central portion and a plurality of side protrusions (122). The central portion is used to support the product to be pressurized. The plurality of side protrusions (122) are arranged on the outside of the central portion at intervals around the central portion. The translation guide mechanisms of the plurality of clamping assemblies are respectively mounted on the plurality of side protrusions (122).

3. The positioning device for synchronous clamping according to claim 2, characterized in that, The carrier plate is a cross-shaped carrier plate, including a central part and four side protrusions (122), both of which are rectangular.

4. The positioning device for synchronous clamping according to claim 2, characterized in that, The clamping member includes a flat plate portion and a vertical rod portion. The flat plate portion is located above the carrier plate. One end of the flat plate portion near the center of the carrier plate is used to clamp the product to be held under pressure. The translational guide mechanism is connected between the portion of the flat plate portion away from the center of the carrier plate and the side protrusion (122). The upper end of the vertical rod portion is connected to the flat plate portion, and the lower end of the vertical rod portion is connected to the upper end of the connecting rod.

5. The positioning device for synchronous clamping according to claim 4, characterized in that, The clamping member includes two vertical rods, which are located on both sides of the lateral protrusion (122).

6. The positioning device for synchronous clamping according to claim 1, characterized in that, The lifting drive device is a cylinder.

7. The positioning device for synchronous clamping according to claim 1, characterized in that, The translational guide mechanism includes a slide rail and a slider, the slide rail being connected to the carrier plate and the slider being connected to the clamping member.

8. The positioning device for synchronous clamping according to claim 1, characterized in that, The hinge mechanism is a hinge shaft.

9. The positioning device for synchronous clamping according to claim 1, characterized in that, The first support is a bottom support plate.

10. The positioning device for synchronous clamping according to claim 1, characterized in that, The second support is a bottom support rod, which is fixedly connected to the first support.

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