Adjustable vacuum suction medal positioning table

Abstract

This utility model relates to the technical field of medal positioning platforms, specifically to an adjustable vacuum adsorption medal positioning platform, including a base plate, a flow channel plate, a panel, and an angle adjustment mechanism. The flow channel plate is installed on the upper surface of the base plate, and the panel is installed on the upper surface of the flow channel plate. The angle adjustment mechanism is embedded in the center of the base plate, the flow channel plate, and the panel. The edge of the base plate has a sliding groove, and the center of the upper surface of the base plate has an installation groove. The center of the flow channel plate has a through groove. The multi-channel vacuum adsorption system ensures the adsorption stability of the circular medal. Combined with the radial stepless fine adjustment mechanism of the worm gear drive and the original "dual-state drive component" (0.5mm sinking in the normal state to isolate processing vibration, and 0.5mm lifting to rigidly contact the medal during adjustment), the transmission engagement and rotation unlocking are realized synchronously under the linkage of the inclined platform lifting block controlled by a single bolt. With the help of the diagonal spring compression modular fixture, a 3-second rapid shape change and adaptive compression are achieved.

Description

Technical Field

[0001] This utility model relates to the technical field of medal positioning platforms, specifically an adjustable vacuum adsorption medal positioning platform. Background Technology

[0002] Medal positioning tables are key tooling equipment in medal processing, used to precisely fix medal blanks and ensure the processing accuracy of engraving, stamping, inlaying and other processes. The table surface is mostly made of hard alloy or high carbon steel and equipped with adjustable positioning pins, magnetic suction devices or pneumatic clamps, which can adapt to medal substrates of different sizes and shapes.

[0003] Positioning stages can prevent offsets and skews during processing, ensuring the consistency of positions for elements such as patterns and text, and improving the efficiency and accuracy of mass production. However, they still have certain problems: 1) processing vibrations interfere with angular stability; 2) insufficient angle adjustment accuracy; 3) low efficiency and high cost of fixture changeover. Therefore, in view of the above situation, there is an urgent need to develop an adjustable vacuum adsorption medal positioning stage to overcome the shortcomings in current practical applications and meet current needs. Utility Model Content

[0004] The purpose of this invention is to provide an adjustable vacuum adsorption medal positioning platform to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an adjustable vacuum adsorption medal positioning platform, comprising a base plate, a flow channel plate, a panel, and an angle adjustment mechanism. The flow channel plate is installed on the upper surface of the base plate, the panel is installed on the upper surface of the flow channel plate, and the angle adjustment mechanism is embedded in the center of the base plate, the flow channel plate, and the panel.

[0006] The edge of the base plate has a sliding groove, and the center of the upper surface of the base plate has an installation groove.

[0007] A through slot is provided at the center of the flow channel plate;

[0008] The angle adjustment mechanism includes: a radial fine-tuning component for adjusting the angle of the medal to be processed, a driving component for driving the radial fine-tuning component to rotate, and a locking component for locking the radial fine-tuning component; the radial fine-tuning component is rotatably installed in the mounting groove, the driving component is rotatably installed in the flow channel plate, and the locking component is installed in the slide groove, with the radial fine-tuning component passing through the flow channel plate and the panel in sequence.

[0009] Specifically, the angle adjustment mechanism integrates vacuum adsorption and precision angle adjustment. While maintaining the vacuum adsorption function of the panel, the radial fine-tuning component driven by the worm gear achieves precise angle adjustment of the medal.

[0010] Preferably, the radial fine-tuning assembly includes a rotating seat, a bearing, a turbine, a spring b, and a drive component. The rotating seat is rotatably mounted in the mounting groove via the bearing. The turbine is sleeved on the outer wall of the top of the rotating seat and fixedly connected to the rotating seat by screws. The drive component is slidably mounted in the rotating seat, and the spring b is mounted between the drive component and the panel.

[0011] Specifically, spring b applies a downward elastic force to the drive component, keeping the upper surface of the drive part at its lowest position, slightly lower than the upper surface of the panel, thus disconnecting the force transmission between the radial fine-tuning component and the medal. When the locking component pushes the inclined platform lifting block towards the center through the adjusting bolt, its inclined platform slides with the bottom edge of the drive component, lifting the drive component, compressing spring b, and making the upper surface of the drive part slightly higher than the upper surface of the panel. At this time, the drive component can directly drive the medal to rotate and adjust the angle through the turbine drive rotating seat and the lifted drive component, realizing a switchable state of "rigid contact transmission during adjustment and automatic disengagement when not adjusting". This avoids angle deviation caused by processing vibration and ensures that the adjustment action is accurately transmitted to the medal.

[0012] Preferably, the driving component includes a sliding part, a top plate, and a driving part. The sliding part is fixed on the lower surface of the driving part. Both the sliding part and the driving part are cylindrical structures and are coaxially arranged. The sliding part slides through the rotating seat. The outer wall of the sliding part is provided with a key, and the inner wall of the rotating seat is provided with a keyway. A through hole is provided at the center of the panel. The driving part passes through the through hole and achieves clearance fit with the through hole. The top plate is fixed on the outer wall of the bottom end of the driving part, and the upper surface of the top plate abuts against the bottom end of the spring b.

[0013] Specifically, the rotational torque is rigidly transmitted through the cooperation of the sliding part and the key / keyway. At the same time, the continuous downward pressure of the spring b supported by the top plate causes the drive part to sink into the through hole of the panel in normal condition, so that its upper surface is lower than the panel and completely disconnects from the medal to isolate the slight displacement caused by processing vibration. When the inclined platform lifting block of the locking assembly is pushed horizontally, its inclined surface precisely lifts the bottom edge of the drive part, overcomes the downward pressure of the spring b and pushes the drive part to bulge above the panel plane, so that the drive part and the medal form rigid contact. At this time, the rotational driving force is directly transmitted to the medal through the keyway to achieve zero-slip angle adjustment. The core contradiction of "processing anti-interference" and "zero backlash adjustment" is solved simultaneously by mechanical interlocking, which significantly improves the processing accuracy and efficiency of the medal.

[0014] Preferably, the drive assembly includes a worm gear, an extension shaft, and a handle. The extension shaft is rotatably disposed within the flow channel plate, with one end of the extension shaft extending into the through groove. The worm gear is sleeved on the end of the extension shaft located within the through groove and meshes with the worm. The handle is installed on the end of the extension shaft located outside the flow channel plate.

[0015] Specifically, through the internal meshing transmission of the worm and turbine, combined with the extension shaft design of the external handle, three core functions are achieved simultaneously within a compact space: the worm gear meshing provides a high reduction ratio and self-locking characteristics, ensuring the precision of angle fine-tuning and the anti-offset stability of the adjusted position; the extension shaft extends the operating end to the outside of the flow channel plate, keeping the handle away from the processing area and avoiding interference with vacuum adsorption and medal processing; the slot layout allows the worm to be deeply embedded inside the flow channel plate, directly driving the central turbine, minimizing the space occupied by the transmission chain, and ensuring the rigidity and integration of the overall structure.

[0016] Preferably, the locking assembly includes a ramp lifting block, a sleeve, and an adjusting bolt. The sleeve is horizontally fixed at one end of the ramp lifting block. Both the ramp lifting block and the sleeve can be slidably installed in the slide groove. One end of the slide groove is connected to the mounting groove. The adjusting bolt passes through the outer wall of the base plate and extends into the slide groove, and is rotatably connected to the base plate. The end of the sleeve adjacent to the adjusting bolt has an internal thread, and the adjusting bolt and the sleeve are threadedly connected.

[0017] Specifically, by adjusting the threaded transmission between the bolt and the sleeve, the rotational motion of the bolt is converted into the horizontal linear motion of the inclined platform lifting block within the slide groove. When the adjusting bolt is tightened, the sleeve and the inclined platform lifting block are pushed to slide towards the center along the slide groove. Utilizing the sliding contact between the inclined surface of the inclined platform lifting block and the bottom edge of the drive component, the horizontal thrust is converted into a vertical lifting force, precisely overcoming the downward pressure of spring b and lifting the drive component, causing the upper surface of the drive unit to protrude from the panel to contact the medal, simultaneously achieving rotational unlocking and transmission engagement. When the bolt is loosened in the opposite direction, the inclined platform lifting block resets and exits under the action of the adjusting bolt, and the drive component sinks and detaches from the medal under the action of spring b. This allows for simultaneous control of the dual states of "transmission connection / disconnection" and "rotational locking / unlocking" with a single operation, significantly improving adjustment efficiency and reliability.

[0018] Preferably, the flow channel plate has multiple sets of airflow channels, and the panel has several adsorption holes, with the airflow channels and adsorption holes vertically aligned.

[0019] Preferably, the base plate also includes a sealing cover, a mounting block, and air pipe interfaces. The sealing cover is installed on the lower surface of the base plate to seal the slide groove. The mounting block is installed at the center of the lower surface of the base plate. Several air pipe interfaces are installed at the four corners of the bottom of the base plate and are connected to the airflow channels.

[0020] Specifically, the design of vertical alignment between the multiple airflow channels of the flow channel plate and the adsorption holes of the panel creates a highly efficient and leak-free vacuum adsorption path, ensuring that negative pressure is evenly transmitted to the medal contact surface. The sealing cover plate added to the bottom of the base plate achieves dynamic sealing of the slide groove, ensuring the sliding function of the locking component while isolating external airflow interference. The air pipe interfaces distributed at the four corners are directly connected to the airflow channels, forming a multi-channel independent vacuum source input, which significantly improves adsorption stability and resistance to local leakage. The central mounting block strengthens the overall structural rigidity, and the integrated layout simultaneously solves the requirements of vacuum sealing, airflow distribution and mechanical support, providing a highly stable adsorption and fixing foundation for medal processing.

[0021] Preferably, two sets of diagonally arranged fixture assemblies are installed on the panel. The fixture assembly includes a fixture plate, a positioning shaft, a pressing block, a spring a, and a screw sleeve. The positioning shaft is fixed at the corner of the upper surface of the panel. The corner of the fixture plate is provided with a slot that is adapted to the positioning shaft. A pressing block and a spring a are sequentially sleeved on a single positioning shaft. The top end of the positioning shaft is threaded with a screw sleeve.

[0022] Specifically, the medal carrier can be quickly positioned and changed by the insertion and cooperation of two sets of diagonally distributed positioning shafts and the slotted jig plate. At the same time, spring A applies continuous downward elastic pressure to the pressing block, so that the jig plate is tightly attached to the panel surface, effectively suppressing processing vibration and displacement. The threaded locking design of the top screw sleeve can precisely adjust the pre-compression of spring A to adapt to the pressing requirements of medals of different thicknesses, and ensure that the jig plate and the panel remain in a gapless seal during vacuum adsorption, eliminating air leakage. The overall structure is modular and detachable, which takes into account both high repeatability positioning accuracy and the flexibility of quick jig changeover, significantly improving the processing efficiency of multiple batches of medals.

[0023] Preferably, when the driving part of the driving member is in its lowest position under the action of spring b, its upper surface is 0.5mm lower than the upper surface of the panel; when the inclined platform lifting block of the locking assembly lifts the driving member to its highest position, the upper surface of the driving part is 0.5mm higher than the upper surface of the panel.

[0024] Specifically, by precisely limiting the drive unit of the drive component to be 0.5mm lower than the upper surface of the panel in the lowest position, the interference of processing vibration is completely isolated, and 0.5mm higher than the panel in the highest position, ensuring rigid contact with the medal, the dual core functions are achieved by quantifying the displacement boundary simultaneously: in the low position, the physical gap completely blocks the force transmission path between the radial fine adjustment component and the medal, fundamentally eliminating the micro-offset caused by processing vibration; in the high position, the pre-set protrusion compensates for the unevenness of the medal's bottom surface, forming a slip-free transmission interface, making the angle adjustment precise and without backlash; the 0.5mm precision stroke design is directly related to the slope angle of the inclined table lifting block, the spring force coefficient of spring b, and the mechanical tolerance control of the locking component, becoming the technical hub for the rigid-flexible switching between "disengagement from interference" and "zero backlash engagement", significantly improving the angle stability and finished product qualification rate of the medal processing.

[0025] Preferably, the inclined platform is provided on one side of the lifting block adjacent to the driving member, and the inclined platform slides in contact with the bottom edge of the sliding part of the driving member.

[0026] It should be added here: Appendix Figure 1 , 3 In section 4, A represents a circular medal to be processed.

[0027] Compared with the prior art, this utility model provides an adjustable vacuum adsorption medal positioning platform, which has the following beneficial effects:

[0028] A multi-channel vacuum adsorption system ensures the adsorption stability of the circular medals. Combined with a radial stepless micro-adjustment mechanism with worm gear transmission and an original "dual-state drive component" (sinking 0.5mm in normal state to isolate processing vibration, and lifting 0.5mm to rigidly contact the medal during adjustment), the transmission engagement and rotation unlocking are simultaneously achieved under the linkage of the inclined platform lifting block controlled by a single bolt. With the help of a diagonal spring-pressed modular fixture, a 3-second rapid shape change and adaptive pressing are achieved, which solves the industry problem of high-precision angle adjustment, anti-vibration interference and efficient shape change compatibility in the processing of circular medals, effectively improving processing efficiency and finished product qualification rate. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments 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 these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the front structure of this utility model;

[0031] Figure 2 This is one of the partial cross-sectional views of the base plate, flow channel plate, and panel of this utility model;

[0032] Figure 3 This is the second partial cross-sectional view of the base plate, flow channel plate, and panel of this utility model;

[0033] Figure 4 This is an exploded view of the entire utility model;

[0034] Figure 5 This is a schematic diagram of the top structure of the angle adjustment mechanism of this utility model;

[0035] Figure 6 This is a schematic diagram of the bottom structure of the angle adjustment mechanism of this utility model;

[0036] Figure 7 This is an exploded view of the angle adjustment mechanism of this utility model;

[0037] Figure 8 This is an exploded view of the radial fine-tuning component of this utility model;

[0038] Figure 9 This is a schematic diagram of the rotating seat structure of this utility model;

[0039] Figure 10 This is a schematic diagram of the drive component structure of this utility model;

[0040] Figure 11 This is a partial cross-sectional view of the base plate of this utility model.

[0041] In the diagram: 10, base plate; 110, slide groove; 120, sealing cover plate; 130, mounting groove; 140, mounting block; 150, air pipe interface; 20, flow channel plate; 210, through groove; 220, airflow channel; 30, panel; 310, suction hole; 320, jig assembly; 321, jig plate; 322, positioning shaft; 323, pressing block; 324, spring a; 325, screw sleeve; 40, angle adjustment mechanism; 410, radial... Fine-tuning component; 411, Rotary seat; 4111, Keyway; 412, Bearing; 413, Turbine; 414, Spring b; 415, Drive component; 4151, Sliding part; 4152, Top plate; 4153, Drive unit; 4154, Key; 420, Drive assembly; 421, Worm gear; 422, Extension shaft; 423, Handle; 430, Locking assembly; 431, Inclined platform lifting block; 432, Sleeve; 433, Adjusting bolt. Detailed Implementation

[0042] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0043] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between 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.

[0044] Example:

[0045] Please see Figures 1-11 This utility model provides a technical solution: an adjustable vacuum adsorption medal positioning platform, including a base plate 10, a flow channel plate 20, a panel 30 and an angle adjustment mechanism 40. The flow channel plate 20 is installed on the upper surface of the base plate 10, the panel 30 is installed on the upper surface of the flow channel plate 20, and the angle adjustment mechanism 40 is embedded in the center of the base plate 10, the flow channel plate 20 and the panel 30.

[0046] The edge of the base plate 10 is provided with a sliding groove 110, and the center of the upper surface of the base plate 10 is provided with a mounting groove 130.

[0047] A through groove 210 is provided at the center of the flow channel plate 20;

[0048] The angle adjustment mechanism 40 includes: a radial fine-tuning component 410 for adjusting the angle of the medal to be processed, a driving component 420 for driving the radial fine-tuning component 410 to rotate, and a locking component 430 for locking the radial fine-tuning component 410; the radial fine-tuning component 410 is rotatably installed in the mounting groove 130, the driving component 420 is rotatably installed in the flow channel plate 20, and the locking component 430 is installed in the slide groove 110. The radial fine-tuning component 410 passes through the flow channel plate 20 and the panel 30 in sequence.

[0049] Specifically, the angle adjustment mechanism 40 integrates vacuum adsorption and precision angle adjustment. While maintaining the vacuum adsorption function of the panel 30, the radial fine-tuning component 410 driven by the worm gear achieves precise angle adjustment of the medal.

[0050] Preferably, the radial fine-tuning assembly 410 includes a rotating seat 411, a bearing 412, a turbine 413, a spring b414, and a drive member 415. The rotating seat 411 is rotatably mounted in the mounting groove 130 via the bearing 412. The turbine 413 is sleeved on the outer wall of the top end of the rotating seat 411 and is fixedly connected to the rotating seat 411 by screws. The drive member 415 is slidably mounted in the rotating seat 411. The spring b414 is mounted between the drive member 415 and the panel 30.

[0051] Specifically, spring b414 applies a downward elastic force to drive component 415, ensuring that the upper surface of drive component 4153 is always at its lowest position, slightly lower than the upper surface of panel 30, thus disconnecting the force transmission between radial fine-tuning component 410 and medal. When locking component 430 pushes inclined platform lifting block 431 towards the center via adjusting bolt 433, its inclined platform slides against the bottom edge of drive component 415, lifting drive component 415, compressing spring b414, and making the upper surface of drive component 4153 slightly higher than the upper surface of panel. At this time, drive component 420 drives rotating seat 411 and the lifted drive component 415 via turbine 413, directly driving medal to rotate and adjust angle. This achieves a switchable state of "rigid contact transmission during adjustment and automatic disengagement during non-adjustment," avoiding angle deviation caused by processing vibration and ensuring accurate transmission of adjustment action to medal.

[0052] Preferably, the driving component 415 includes a sliding part 4151, a top plate 4152, and a driving part 4153. The sliding part 4151 is fixed on the lower surface of the driving part 4153. Both the sliding part 4151 and the driving part 4153 are cylindrical structures and are coaxially arranged. The sliding part 4151 slides through the rotating seat 411. A key 4154 is provided on the outer wall of the sliding part 4151. A keyway 4111 is provided on the inner wall of the rotating seat 411. A through hole is provided at the center of the panel 30. The driving part 4153 passes through the through hole and achieves a clearance fit with the through hole. The top plate 4152 is fixed on the outer wall of the bottom end of the driving part 4153. The upper surface of the top plate 4152 abuts against the bottom end of the spring b414.

[0053] Specifically, the rigid transmission of rotational torque is achieved through the cooperation of the sliding part 4151 and the key 4154 / keyway 4111. At the same time, the top plate 4152 receives the continuous downward pressure of the spring b414, causing the drive part 4153 to sink into the through hole of the panel 30 in normal state, so that its upper surface is lower than the panel 30, completely severing the contact with the medal to isolate the slight displacement caused by processing vibration. When the inclined platform lifting block 431 of the locking assembly 430 is pushed horizontally, its inclined surface precisely lifts the bottom edge of the drive part 415, overcomes the downward pressure of the spring b414 and pushes the drive part 4153 to bulge above the plane of the panel 30, so that the drive part 4153 forms a rigid contact with the medal. At this time, the rotational driving force is directly transmitted to the medal through the keyway 4111 to achieve non-slip angle adjustment. The core contradiction of "processing anti-interference" and "adjustment zero backlash" is solved simultaneously by mechanical interlocking, which significantly improves the processing accuracy and efficiency of the medal.

[0054] Preferably, the drive assembly 420 includes a worm gear 421, an extension shaft 422, and a handle 423. The extension shaft 422 is rotatably disposed within the flow channel plate 20, with one end of the extension shaft 422 extending into the through groove 210. The worm gear 421 is sleeved on the end of the extension shaft 422 located within the through groove 210 and meshes with the turbine 413. The handle 423 is installed on the end of the extension shaft 422 located outside the flow channel plate 20.

[0055] Specifically, through the internal meshing transmission of the worm gear 421 and the turbine 413, combined with the design of the extension shaft 422 of the external handle 423, three core functions are achieved simultaneously in a compact space: the meshing of the worm gear 413 and worm 421 provides a high reduction ratio and self-locking characteristics, ensuring the precision of angle fine-tuning and the anti-offset stability of the adjusted position; the extension shaft 422 extends the operating end to the outside of the flow channel plate 20, keeping the handle 423 away from the processing area, avoiding interference with vacuum adsorption and medal processing; the layout of the through slot 210 allows the worm gear 421 to be deeply embedded inside the flow channel plate, directly driving the central turbine 413, minimizing the space occupied by the transmission chain, and ensuring the rigidity and integration of the overall structure.

[0056] Preferably, the locking assembly 430 includes a ramp lifting block 431, a sleeve 432, and an adjusting bolt 433. The sleeve 432 is horizontally fixed at one end of the ramp lifting block 431. Both the ramp lifting block 431 and the sleeve 432 can be slidably installed in the slide groove 110. One end of the slide groove 110 is connected to the mounting groove 130. The adjusting bolt 433 passes through the outer wall of the base plate 10 and extends into the slide groove 110, and is rotatably connected to the base plate 10. The end of the sleeve 432 adjacent to the adjusting bolt 433 is provided with an internal thread, and the adjusting bolt 433 and the sleeve 432 are threadedly connected.

[0057] Specifically, by adjusting the threaded transmission between the bolt 433 and the sleeve 432, the rotational motion of the bolt is converted into the horizontal linear motion of the inclined platform lifting block 431 within the slide groove 110. When the adjusting bolt 433 is tightened, the sleeve 432 and the inclined platform lifting block 431 are pushed to slide towards the center along the slide groove 110. The horizontal thrust is converted into a vertical lifting force by utilizing the sliding contact between the inclined surface of the inclined platform lifting block 431 and the bottom edge of the drive member 415. This precisely overcomes the downward pressure of the spring b414 and lifts the drive member 415, causing the upper surface of the drive part 4153 to protrude from the panel 30 to contact the medal, simultaneously achieving rotational unlocking and transmission engagement. When the bolt is loosened in the opposite direction, the inclined platform lifting block 431 is reset and withdrawn under the action of the adjusting bolt 433, and the drive member 415 sinks and detaches from the medal under the action of the spring b414. This allows for simultaneous control of the dual states of "transmission connection / disconnection" and "rotational locking / unlocking" with a single operation, significantly improving adjustment efficiency and reliability.

[0058] Preferably, the flow channel plate 20 has multiple sets of airflow channels 220, and the panel 30 has a number of adsorption holes 310, with the airflow channels 220 and adsorption holes 310 being vertically aligned.

[0059] Preferably, the base plate 10 further includes a sealing cover plate 120, a mounting block 140, and an air pipe interface 150. The sealing cover plate 120 is installed on the lower surface of the base plate 10 to seal the slide groove 110. The mounting block 140 is installed at the center of the lower surface of the base plate 10. Several air pipe interfaces 150 are installed at the four corners of the bottom of the base plate 10 and are connected to the airflow channel 220.

[0060] Specifically, the vertical alignment of multiple airflow channels 220 on the flow channel plate 20 with the adsorption holes 310 on the panel 30 creates a highly efficient and leak-free vacuum adsorption pathway, ensuring that negative pressure is uniformly transmitted to the medal contact surface. The sealing cover plate 120 added to the bottom of the base plate 10 dynamically seals the slide groove 110, ensuring the sliding function of the locking component 430 while isolating external airflow interference. The air pipe interfaces 150 distributed at the four corners are directly connected to the airflow channels 220, forming a multi-channel independent vacuum source input, which significantly improves adsorption stability and resistance to local leakage. The central mounting block 140 strengthens the overall structural rigidity, and the integrated layout simultaneously solves the requirements of vacuum sealing, airflow distribution and mechanical support, providing a highly stable adsorption and fixing foundation for medal processing.

[0061] Preferably, two sets of diagonally arranged jig assemblies 320 are installed on the panel 30. The jig assembly 320 includes a jig plate 321, a positioning shaft 322, a pressing block 323, a spring a324, and a threaded sleeve 325. The positioning shaft 322 is fixed at the corner of the upper surface of the panel 30. The corner of the jig plate 321 is provided with a slot, which is adapted to the positioning shaft 322. A pressing block 323 and a spring a324 are sequentially sleeved on a single positioning shaft 322. The top end of the positioning shaft 322 is threadedly connected to a threaded sleeve 325.

[0062] Specifically, the medal carrier is quickly positioned and replaced by two sets of diagonally distributed positioning shafts 322 and the slotted jig plate 321. At the same time, the spring a324 applies continuous downward elastic pressure to the pressing block 323, so that the jig plate 321 is tightly attached to the surface of the panel 30, effectively suppressing processing vibration and displacement. The threaded locking design of the top screw sleeve 325 can precisely adjust the pre-compression of the spring a324 to adapt to the pressing requirements of medals of different thicknesses, and ensure that the jig plate 321 and the panel 30 are tightly sealed without gaps during vacuum adsorption, eliminating air leakage. The overall structure is modular and detachable, which takes into account both high repeatability positioning accuracy and the flexibility of quick jig changeover, significantly improving the processing efficiency of multiple batches of medals.

[0063] Preferably, when the driving part 4153 of the driving member 415 is in the lowest position under the action of the spring b414, its upper surface is 0.5mm lower than the upper surface of the panel 30; when the inclined platform lifting block 431 of the locking assembly 430 lifts the driving member 415 to the highest position, the upper surface of the driving part 4153 is 0.5mm higher than the upper surface of the panel 30.

[0064] Specifically, by precisely limiting the drive part 4153 of the drive component 415 to be 0.5mm lower than the upper surface of the panel 30 in the lowest position, the interference of processing vibration is completely isolated, and in the highest position it is 0.5mm higher than the panel, ensuring rigid contact with the medal. The dual core functions are achieved by quantifying the displacement boundary: in the low position, the force transmission path between the radial fine adjustment component 410 and the medal is completely blocked by the physical gap, fundamentally eliminating the micro-offset caused by processing vibration; in the high position, the unevenness of the bottom surface of the medal is compensated by the preset protrusion, forming a slip-free transmission interface, so that the angle adjustment is accurate and without backlash. The 0.5mm precision stroke design is directly related to the slope angle of the inclined table lifting block 431, the spring force coefficient of the spring b414 and the mechanical tolerance control of the locking component 430, becoming the technical hub for the rigid-flexible switching between "disengagement from interference" and "zero backlash engagement", which significantly improves the angle stability and finished product qualification rate of the medal processing.

[0065] Preferably, the inclined platform lifting block 431 has an inclined platform on one side adjacent to the driving member 415, and the inclined platform slides in cooperation with the bottom edge of the sliding part 4151 of the driving member 415.

[0066] Working principle: The medal is placed at the center of the panel 30. The fixture plate 321 of the fixture assembly 320 limits its position, ensuring it is precisely centered. The vacuum source is transmitted through the air pipe interface 150 of the base plate 10 and the airflow channel 220 to the adsorption hole 310 of the panel 30, adsorbing and fixing the medal. When angle adjustment is required, the adjusting bolt 433 of the locking assembly 430 is tightened, pushing the sleeve 432 and the inclined platform lifting block 431 to slide horizontally along the slide groove 110. The bottom edge of the sliding part 4151 of the inclined platform lifting drive component 415 of the inclined platform lifting block 431 overcomes the spring. The downward pressure of b414 causes the drive unit 4153 to protrude 0.5mm upwards to contact the medal, while simultaneously releasing the rotation constraint; rotating the handle 423 drives the worm gear 421 to mesh with the turbine 413, causing the rotating seat 411 and the raised drive unit 415 to rotate synchronously, achieving precise radial angle adjustment of the medal without slippage; after adjustment, loosening the adjusting bolt 433 causes the spring b414 to push the drive unit 415 downwards to reset (the drive unit 4153 sinks 0.5mm into the panel and detaches from the medal), the inclined table lifting block 431 retracts horizontally, and the rotating mechanism automatically locks, isolating the entire process from processing vibration interference.

[0067] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. An adjustable vacuum suction medal positioning table, characterized in that: It includes a bottom plate (10), a flow channel plate (20), a panel (30) and an angle adjusting mechanism (40), the flow channel plate (20) is installed on the upper surface of the bottom plate (10), the panel (30) is installed on the upper surface of the flow channel plate (20), and the angle adjusting mechanism (40) is embedded and installed at the center position of the bottom plate (10), the flow channel plate (20) and the panel (30); The edge of the bottom plate (10) is provided with a sliding groove (110), and the center position of the upper surface of the bottom plate (10) is provided with a mounting groove (130); The center position of the flow channel plate (20) is provided with a through groove (210); The angle adjusting mechanism (40) comprises a radial fine adjustment assembly (410) for adjusting the angle of the medal to be processed, a driving assembly (420) for driving the radial fine adjustment assembly (410) to rotate, and a locking assembly (430) for locking the radial fine adjustment assembly (410); the radial fine adjustment assembly (410) is rotatably installed in the mounting groove (130), the driving assembly (420) is rotatably arranged in the flow channel plate (20), and the locking assembly (430) is installed in the sliding groove (110); the radial fine adjustment assembly (410) penetrates the flow channel plate (20) and the panel (30) in sequence.

2. The adjustable vacuum suction medal positioning table according to claim 1, wherein: The radial fine adjustment assembly (410) comprises a rotating seat (411), a bearing (412), a turbine (413), a spring b (414) and a driving piece (415), the rotating seat (411) is rotatably installed in the mounting groove (130) through the bearing (412), the turbine (413) is sleeved on the outer wall of the top end of the rotating seat (411) and is fixedly connected with the rotating seat (411) through screws, the driving piece (415) is slidingly installed in the rotating seat (411), and the spring b (414) is installed between the driving piece (415) and the panel (30).

3. The adjustable vacuum suction medal positioning table according to claim 2, wherein: The driving piece (415) comprises a sliding part (4151), a top disc (4152) and a driving part (4153), the sliding part (4151) is fixedly arranged on the lower surface of the driving part (4153), the sliding part (4151) and the driving part (4153) are coaxially arranged in cylindrical structures, the sliding part (4151) is slidingly arranged in the rotating seat (411), the outer wall of the sliding part (4151) is provided with a key (4154), the inner wall of the rotating seat (411) is provided with a key groove (4111), the center position of the panel (30) is provided with a through hole, the driving part (4153) is arranged in the through hole and is in gap fit with the through hole, and the top disc (4152) is fixedly arranged on the outer wall of the bottom end of the driving part (4153), and the upper surface of the top disc (4152) abuts against the bottom end of the spring b (414).

4. The adjustable vacuum suction medal positioning table according to claim 2, wherein: The driving assembly (420) comprises a worm (421), an extension shaft (422) and a handle (423), the extension shaft (422) is rotatable and penetrates through the flow channel plate (20), one end of the extension shaft (422) extends into the through groove (210), the worm (421) is sleeved on one end of the extension shaft (422) located in the through groove (210) and is engaged with the turbine (413), and the handle (423) is installed on the other end of the extension shaft (422) located outside the flow channel plate (20).

5. The adjustable vacuum suction medal positioning table according to claim 1, wherein: The locking assembly (430) comprises an inclined table jacking block (431) and a sleeve (432), the sleeve (432) is horizontally fixed on one end of the inclined table jacking block (431), the inclined table jacking block (431) and the sleeve (432) are slidably installed in the sliding groove (110), one end of the sliding groove (110) is communicated with the mounting groove (130), the adjusting bolt (433) penetrates through the outer wall of the bottom plate (10) and extends into the sliding groove (110) and is rotatably connected with the bottom plate (10), and the sleeve (432) is provided with an internal thread on one end adjacent to the adjusting bolt (433), and the adjusting bolt (433) is threadedly connected with the sleeve (432).

6. The adjustable vacuum suction medal positioning table according to claim 1, wherein: A plurality of groups of air flow channels (220) are formed in the flow channel plate (20), and a plurality of adsorption holes (310) are formed in the panel (30), and the air flow channels (220) are vertically aligned with the adsorption holes (310).

7. The adjustable vacuum suction medal positioning table according to claim 6, wherein: The bottom plate (10) further comprises a sealing cover plate (120), a mounting block (140) and a gas pipe interface (150), the sealing cover plate (120) is installed on the lower surface of the bottom plate (10) and is used for sealing the sliding groove (110), the mounting block (140) is installed on the center of the lower surface of the bottom plate (10), and a plurality of gas pipe interfaces (150) are installed on the four corner positions of the bottom of the bottom plate (10) and are communicated with the air flow channels (220).

8. The adjustable vacuum suction medal positioning table according to claim 1, wherein: Two groups of diagonal jigs (320) are installed on the panel (30), the jig (320) comprises a jig plate (321), a positioning shaft (322), a pressing block (323), a spring a (324) and a sleeve (325), the positioning shaft (322) is fixed on the edge corner of the upper surface of the panel (30), the edge corner of the jig plate (321) is provided with a clamping groove matched with the positioning shaft (322), the pressing block (323) and the spring a (324) are sequentially sleeved on the single positioning shaft (322), and the sleeve (325) is threadedly connected with the top end of the positioning shaft (322).

9. The adjustable vacuum suction medal positioning table according to claim 3, wherein: When the driving part (4153) of the driving member (415) is at the lowest position under the action of the spring b (414), the upper surface of the driving part (4153) is 0.5mm lower than the upper surface of the panel (30); when the inclined table jacking block (431) of the locking assembly (430) jacks up the driving member (415) to the highest position, the upper surface of the driving part (4153) is 0.5mm higher than the upper surface of the panel (30).

10. The adjustable vacuum suction medal positioning table according to claim 5, wherein: The inclined table jacking block (431) is provided with an inclined table adjacent to one side of the driving member (415), and the inclined table is in sliding fit with the bottom edge of the sliding part (4151) of the driving member (415).

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