A vacuum adsorption fixture with locking device
By designing a locking device on the vacuum adsorption clamp, and connecting the rebound nails to the parts, mechanical fixation of the workpiece is achieved, deformation and displacement problems caused by insufficient adsorption force are solved, and processing stability and accuracy are improved.
Patent Information
- Application Number
- CN202411990084.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2025-04-01
AI Technical Summary
Due to insufficient adsorption force of existing vacuum adsorption fixtures, the workpiece is easily deformed and displaced during cutting, and it is difficult to effectively fix the workpiece in traditional compression methods.
A vacuum adsorption clamp with locking device is designed, with a mounting hole on the fixture body and a locking device composed of a rebounding base body, a rear end screw plug, a rebound nail and a spring. Through the spring force, the rebound nail can be ejected and connected to the parts, achieving mechanical fixation and avoiding displacement.
Through the mechanical fixation of the locking device, the deformation and displacement of the workpiece due to insufficient adsorption force is effectively avoided, and the stability and accuracy of processing are improved.
Smart Images
Figure CN119734216A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the field of clamps, and in particular to a vacuum adsorption clamp with a locking device. Background Art
[0002] Traditional vacuum adsorption fixtures use sealing strips to surround and form a vacuum cavity. The vacuum cavity is evacuated by vacuum equipment, and atmospheric pressure is used for adsorption and clamping. The workpiece to be processed is pressed with a pressure plate. Due to the lack of vacuum adsorption force, some vacuum adsorbed parts with a certain thickness are prone to deformation or even displacement under the action of large cutting forces. Traditional clamping methods are difficult to clamp, and additional process bosses need to be reserved. Traditional vacuum adsorption fixtures cannot perform adsorption processing.
[0003] Therefore, there is an urgent need for a vacuum adsorption fixture with a locking device to solve the above problems. It is only necessary to pre-process the threaded hole on the workpiece, and then use the vacuum adsorption fixture with a locking device to firmly fix the workpiece on the vacuum adsorption fixture to avoid deformation of the workpiece due to insufficient adsorption force and displacement during processing. Summary of the invention
[0004] The embodiment of the present invention provides a vacuum adsorption clamp with a locking device, which is used to solve the problem that the existing vacuum adsorption clamp is prone to displacement of the workpiece due to insufficient adsorption force.
[0005] In order to overcome the above technical problems, according to an embodiment of the present invention, a vacuum adsorption fixture with a locking device is provided, comprising a vacuum adsorption fixture body and an air path connector arranged on the vacuum adsorption fixture body, a plurality of mounting holes are opened on the working surface of the vacuum adsorption fixture body, and a locking device is arranged in the mounting holes; The locking device includes a rebound base arranged in the mounting hole, a rear end screw plug fixed inside the rebound base, a rebound nail movably arranged inside the rebound base, and a spring arranged between the rear end screw plug and the rebound nail; a connecting structure is also arranged between the rear end screw plug and the rebound nail for realizing the popping out and retraction of the rebound nail, and a driving hole for driving the connection structure to connect and disconnect is provided on the upper end surface of the rebound nail; when the rebound nail pops out, the upper end surface of the rebound nail is higher than the working surface of the vacuum adsorption clamp body; when the rebound nail retracts, the locking device as a whole is not higher than the working surface of the vacuum adsorption clamp body.
[0006] In some embodiments, the rear end screw plug is circumferentially limited inside the rebound base, and a threaded plug is provided at the bottom of the rebound base to axially limit the rear end screw plug.
[0007] In some embodiments, a first O-ring is disposed between the rear end screw plug and the threaded plug.
[0008] In some embodiments, the rear end screw plug has a stepped fit with the interior of the rebound base, and a second O-ring is provided at the step.
[0009] In some embodiments, the rebound base is threadedly connected to the interior of the mounting hole.
[0010] In some embodiments, the outer contour of the rebound base and the inner contour of the mounting hole are stepped to match each other and have at least one step; a third O-ring is provided between at least one step of the outer contour of the rebound base and the inner contour of the mounting hole.
[0011] In some embodiments, the rebound nail includes a straight rod portion and an enlarged portion integrally formed above and below, the rebound base has a through hole matching the straight rod portion, the enlarged portion is clamped under the through hole, and the spring clamps the enlarged portion to provide an upward elastic force for the enlarged portion.
[0012] In some embodiments, the connection structure between the rear end screw plug and the rebound nail adopts a threaded connection, and the driving hole adopts a polygonal hole.
[0013] In some embodiments, an outer surface of the upper end of the straight rod portion is provided with an external thread.
[0014] The technical solution provided by the embodiments of the present invention may have the following beneficial effects: The present invention opens a mounting hole on the vacuum adsorption fixture body, and installs a locking device. The locking device is arranged between the rear end screw plug and the rebound nail and is installed with a spring. Under normal conditions, the rebound nail is connected to the rear end screw plug, and the rebound nail is restricted inside the mounting hole. After the rear end screw plug and the rebound nail are released from connection, the rebound nail extends out under the action of the spring and is used to mechanically connect with the parts. The adsorbed parts are firmly fixed on the vacuum adsorption fixture body by mechanical force, thereby avoiding deformation of the parts caused by insufficient adsorption force and displacement caused during the processing.
[0015] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.
[0017] Figure 1 The figure is an axonometric view of a vacuum adsorption fixture with a locking device according to an exemplary embodiment.
[0018] Figure 2 The figure is a top view of a vacuum adsorption clamp with a locking device according to an exemplary embodiment.
[0019] Figure 3 yes Figure 2 Section view “AA” in the figure.
[0020] In the figure, 1. Vacuum adsorption fixture body; 2. Air line connector; 3. Mounting hole; 4. Locking device; 401. Rebound base; 4011. Through hole; 402. Rear end screw plug; 403. Rebound nail; 4031. Straight rod; 4032. Expanded part; 404. Spring; 405. Connecting structure; 406. Drive hole; 407. Threaded plug; 408. First O-ring; 409. Second O-ring; 410. Third O-ring. DETAILED DESCRIPTION
[0021] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on this patent; in order to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.
[0022] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.
[0023] In the description of the present invention, unless otherwise clearly specified and limited, if the term "connection" or the like appears to indicate the connection relationship between components, the term should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two components or the interaction relationship between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0024] like Figure 1-3As shown, the present invention provides a vacuum adsorption fixture with a locking device 4. Some specific embodiments are described below, including a vacuum adsorption fixture body 1 and an air path connector 2 installed on the vacuum adsorption fixture body 1, which performs vacuum adsorption on parts. In addition, a plurality of mounting holes 3 are provided on the working surface of the vacuum adsorption fixture body 1, and a locking device 4 is installed in the mounting hole 3, which can lock the parts and firmly fix them on the fixture without destroying the part structure, and at the same time does not affect the processing of the vacuum cavity of the part and the surface of the part, and the locking process is simple and easy to operate, avoiding problems caused by sudden gas failure and insufficient adsorption force.
[0025] In some embodiments, more specifically, the locking device 4 includes a rebound base 401 installed in the mounting hole 3, and the bottom of the rebound base 401 is provided with an external thread, and is installed in the mounting hole 3 by threaded connection. A rear end screw plug 402 is installed inside the rebound base 401, and a rebound nail 403 is installed inside the rebound base 401 so as to be movable up and down, and a spring 404 is installed between the rear end screw plug 402 and the rebound nail 403, and the spring 404 provides an upward elastic force for the rebound nail 403. The rebound nail 403 includes a straight rod portion 4031 and an enlarged portion 4032 integrally formed in an upper and lower manner. The rebound base 401 has a through hole 4011 matching the straight rod portion 4031. The enlarged portion 4032 is clamped under the through hole 4011. The spring 404 clamps the enlarged portion 4032 to provide an upward elastic force for the enlarged portion 4032. The rebound base 401 has a stepped hole inside, with a small diameter at the top and a large diameter at the bottom. The enlarged portion 4032 moves up and down at the portion with the large diameter.
[0026] There is also a connection structure 405 between the rear end screw plug 402 and the rebound pin 403. When the connection structure 405 is disconnected, the spring 404 is released from the restriction, and the rebound pin 403 is ejected by the elastic force; after the rebound pin 403 retracts under the action of external force and the connection structure 405 is connected, the spring 404 is compressed and restricted, and the retraction of the rebound pin 403 is maintained. The upper end surface of the rebound pin 403 is provided with a driving hole 406 for driving the connection structure 405 to switch between connection and disconnection.
[0027] A specific implementation method of the connection structure 405 is now provided. The connection structure 405 between the rear end screw plug 402 and the rebound pin 403 is threaded, and the driving hole 406 is a polygonal hole. More specifically, the polygonal hole is a hexagon socket, and the rebound pin 403 is rotated by rotating the hexagon socket with a wrench, thereby realizing the connection and disconnection of the connection structure 405. More specifically, the spring 404 is a conical spring 404, the small end of which is used to fix on the rebound pin 403, and the large end of which is used to avoid the bottom thread of the rebound pin 403, so as to avoid interference problems when the rebound pin 403 is threadedly connected with the rear end screw plug 402.
[0028] The rear end screw plug 402 is circumferentially limited inside the rebound base 401, and the outer shape of the rear end screw plug 402 and the matching position of the rebound base 401 are both polygonal, so that the rear end screw plug 402 cannot rotate inside the rebound base 401, and the circumferential limit is achieved. The bottom of the rebound base 401 is threadedly connected with a thread plug 407 to axially limit the rear end screw plug 402, so as to prevent the rear end screw plug 402 from falling out of the rebound base 401.
[0029] A first O-ring 408 is installed between the rear end screw plug 402 and the threaded plug 407. The rear end screw plug 402 has a step fit with the inside of the rebound base 401, and a second O-ring 409 is installed at the step. The outer contour of the rebound base 401 and the inner contour of the mounting hole 3 are stepped to match each other, and have at least one step, and a third O-ring 410 is installed between the outer contour of the rebound base 401 and the inner contour of the mounting hole 3 at least one step. The first O-ring 408, the second O-ring 409, and the third O-ring 410 jointly achieve sealing to prevent air leakage in the vacuum chamber of the vacuum adsorption fixture body 1.
[0030] The upper outer surface of the straight rod 4031 is formed with an external thread, which can be connected to the pre-processed threaded through hole on the part through the external thread, thereby achieving the function of reinforcing and locking the processed part. When the rebound nail 403 pops out, the upper end surface of the rebound nail 403 is higher than the working surface of the vacuum adsorption fixture body 1; when the rebound nail 403 retracts, the locking device 4 as a whole is not higher than the working surface of the vacuum adsorption fixture body 1.
[0031] The locking device 4 is installed inside the vacuum adsorption fixture body 1 to reinforce the parts being locked. The locking device 4 is small in size and can be used in multiples at the same time, and can be installed at any position that does not affect the function of the fixture. When the locking device 4 is in use, the rebound nail 403 extends out, exposing the external thread part, and can be connected to the pre-processed threaded through hole on the part through the external thread, thereby achieving the effect of reinforcing the parts being locked. When not in use, the rebound nail 403 shrinks in the rebound base 401 and is lower than the working plane of the vacuum adsorption fixture body 1. When in use, it is only necessary to unscrew the rebound nail 403 with an Allen wrench, and the rebound nail 403 automatically pops out of the external thread part. At this time, the parts can be connected to the rebound nail 403 of the locking device 4 through the pre-processed threaded hole, and the adsorbed parts are firmly fixed on the vacuum adsorption fixture body 1 by mechanical force, avoiding deformation of the parts caused by insufficient adsorption force and displacement during processing.
[0032] Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and practicing the disclosure disclosed herein. This application is intended to cover any variations, uses or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art that are not disclosed by the present invention. The description and examples are to be considered exemplary only, and the true scope and spirit of the present invention are indicated by the following claims.
[0033] It should be understood that the present invention is not limited to the exact construction that has been described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.
Claims
1. A vacuum adsorption fixture with a locking device, comprising a vacuum adsorption fixture body (1) and an air path connector (2) arranged on the vacuum adsorption fixture body (1), characterized in that: A plurality of mounting holes (3) are provided on the working surface of the vacuum adsorption fixture body (1), and locking devices (4) are provided in the mounting holes (3); The locking device (4) comprises a rebound base (401) arranged in the mounting hole (3), a rear end screw plug (402) fixed inside the rebound base (401), a rebound pin (403) movably arranged inside the rebound base (401), and a spring (404) arranged between the rear end screw plug (402) and the rebound pin (403); a connecting structure (405) is also arranged between the rear end screw plug (402) and the rebound pin (403) for realizing the ejection and retraction of the rebound pin (403), and a driving hole (406) for driving the connecting structure (405) to switch between connection and disconnection is opened on the upper end surface of the rebound pin (403); when the rebound pin (403) is ejected, the upper end surface of the rebound pin (403) is higher than the working surface of the vacuum adsorption clamp body (1); when the rebound pin (403) is retracted, the locking device (4) as a whole is not higher than the working surface of the vacuum adsorption clamp body (1).
2. The vacuum adsorption fixture with a locking device according to claim 1, characterized in that: The rear end screw plug (402) is circumferentially limited inside the rebound base (401), and a threaded plug (407) is provided at the bottom of the rebound base (401) to axially limit the rear end screw plug (402).
3. The vacuum adsorption fixture with a locking device according to claim 2, characterized in that: A first O-ring (408) is provided between the rear end screw plug (402) and the threaded plug (407).
4. The vacuum adsorption fixture with a locking device according to claim 2, characterized in that: The rear end screw plug (402) and the interior of the rebound base (401) are matched with a step, and a second O-ring (409) is provided at the step.
5. The vacuum adsorption fixture with a locking device according to claim 1, characterized in that: The rebound base (401) is threadedly connected inside the mounting hole (3).
6. The vacuum adsorption fixture with a locking device according to claim 5, characterized in that: The outer contour of the rebound base (401) and the inner contour of the mounting hole (3) are in a step-like shape that matches each other and have at least one step; a third O-ring (410) is provided between at least one step of the outer contour of the rebound base (401) and the inner contour of the mounting hole (3).
7. The vacuum adsorption fixture with a locking device according to claim 1, characterized in that: The rebound nail (403) comprises a straight rod portion (4031) and an enlarged portion (4032) integrally formed at the top and bottom. The rebound base (401) has a through hole (4011) matching the straight rod portion (4031) inside. The enlarged portion (4032) is clamped below the through hole (4011). The spring (404) clamps the enlarged portion (4032) to provide an upward elastic force for the enlarged portion (4032).
8. The vacuum adsorption fixture with a locking device according to claim 7, characterized in that: The connection structure (405) between the rear end screw plug (402) and the rebound nail (401) is threaded, and the driving hole (406) is a polygonal hole.
9. The vacuum adsorption fixture with a locking device according to claim 7, characterized in that: The upper outer surface of the straight rod portion (4031) is provided with an external thread.