A ceramic mold processing jig and a processing apparatus provided with the jig

Abstract

The present application relates to the field of ceramic mold clamping tools, in particular to a ceramic mold processing clamp and a processing equipment with the clamp. The clamp comprises a fixed plate, a clamping assembly, a driving assembly and a pressing assembly. When the blank of the processing ceramic mold is fixed, the two connecting pieces of the clamping assembly are driven by the driving assembly to move outward to the two sides of the fixed plate, the sliding block moves to the middle position with the swing of the connecting rod, and the constraint on the pressing piece is released. At this time, the first spring of the clamping assembly releases the pre-tightening force to drive the pressing piece to automatically move to the middle of the fixed plate, thereby pushing the clamping seat to move synchronously, forming self-adaptive clamping and positioning, and realizing the positioning of the blank in the middle of the fixed plate. The subsequent driving assembly continues to work to drive the pressing plate of the pressing assembly to apply vertical pressing force, so as to fix the blank on the fixed plate, effectively improve the positioning accuracy and anti-vibration stability during the processing of the blank, and provide a stable constraint basis without stress concentration for high-precision processing.

Description

Technical Field

[0001] This invention relates to the field of clamping tools for ceramic molds, and in particular to a clamp for processing ceramic molds and processing equipment configured with the clamp. Background Technology

[0002] In the field of ceramic mold processing, traditional fixtures generally employ a clamping scheme that combines mechanical locating pins with hydraulic clamping. A typical structure uses locating blocks at preset positions to define the initial position of the blank, and then a hydraulic cylinder drives a rigid pressure plate to apply clamping force. This design relies on high-precision machined locating elements to constrain the geometric boundaries of the blank, and the positioning process requires repeated manual adjustments of the block positions to accommodate blanks of different specifications.

[0003] Because dimensional fluctuations are unavoidable in the casting process of mold blanks, the fixed locating pins or stops of traditional fixtures will cause forced displacement due to fit clearance or over-constraint when in contact with the actual boundary of the blank. This displacement causes a systematic deviation between the theoretical center of the blank and the design datum of the fixture. Especially when there is an angle between the axis of symmetry of the blank and the center line of the fixture, the positioning error will be further amplified. This results in an uncontrollable micron-level deviation between the machining coordinate system and the actual geometric center of the blank, ultimately causing fatal defects such as uneven cavity wall thickness and misalignment of the parting surface in ceramic molds. Summary of the Invention

[0004] In view of the shortcomings mentioned above in the background art, the present invention provides a fixture for processing ceramic molds and processing equipment configured with the fixture.

[0005] The present invention adopts the following technical solution:

[0006] In a first aspect, the present invention provides a fixture for processing ceramic molds, the fixture comprising:

[0007] A fixing plate, the upper surface of which is used to place the blank, and connecting plates are fixed on both sides of the bottom surface of the fixing plate;

[0008] A clamping assembly is provided at both ends of the fixed plate. The clamping assembly includes a movable plate and a clamping seat. The movable plate is restricted to slide relative to the middle and side of the fixed plate. Both ends of the movable plate are connected to the rotatable clamping seat.

[0009] A driving assembly includes a first spring, a pressing member, a sliding block, a first connecting rod, and a second connecting rod, each disposed at both ends of the bottom of a fixed plate, and a connecting member disposed at the middle position of the bottom of the fixed plate. The pressing member slides between the connecting plate and the moving plate. The two ends of the first spring abut against the connecting plate and the pressing member, respectively, and the first spring generates a thrust that pushes the pressing member toward the middle of the fixed plate. Two connecting members are disposed in the middle of the fixed plate, and the two connecting members move synchronously relative to the two ends of the fixed plate in a mirror manner. The sliding block is restricted to sliding relative to the middle and side of the fixed plate, and the sliding block abuts against the side of the pressing member facing away from the first spring. One end of each of the first and second connecting rods is pivotally connected to the sliding block, the other end of the first connecting rod is pivotally connected to one of the connecting members, and the other end of the second connecting rod is pivotally connected to the other connecting member.

[0010] When the two connecting members move outward to both sides of the fixed plate, they pull the first connecting rod and the second connecting rod to swing, causing the two sliding blocks to move synchronously towards the middle of the fixed plate. The top pressing member loses its obstruction and moves towards the middle of the fixed plate under the elastic force of the first spring, causing the clamping seat to move towards the middle of the fixed plate. The first spring forms the clamping force at both ends of the fixed plate to clamp the blank placed on the fixed plate.

[0011] When the two connecting parts move toward the middle of the fixed plate, they pull the first connecting rod and the second connecting rod to swing, causing the two sliding blocks to move synchronously toward both ends of the fixed plate. The sliding blocks push the top pressing member toward the end of the fixed plate and compress the first spring, causing the moving plate to lose the pressure of the first spring, thereby causing the blank placed on the fixed plate to lose the clamping force of the clamping seat.

[0012] In one possible implementation of the first aspect, the clamping assembly further includes a swing rod, a pivot is provided at the center of the bottom surface of the fixed plate, the center of the swing rod is sleeved outside the pivot to form an axially fixed rotation, both ends of the swing rod and the two movable plates are connected by a pull rod, and both ends of the pull rod are pivotally connected to the swing rod and the movable plate respectively.

[0013] In a possible implementation of the first aspect, the drive assembly further includes a shaft, a gear, and a rack, the shaft being restricted to rotating at the center of the bottom surface of the fixed plate, the gear being coaxially fixed to the shaft, both of the connecting members fixing the rack, and the racks of the two connecting members being located on both sides of the shaft and meshing with the gear.

[0014] In one possible implementation of the first aspect, the drive assembly further includes a first transmission wheel, a second transmission wheel, and a drive motor. The shaft fixes the first transmission wheel, the drive motor is fixed inside the fixed plate, and the output shaft of the drive motor fixes the second transmission wheel. The second transmission wheel and the first transmission wheel are connected in a driving connection.

[0015] In one possible implementation of the first aspect, the clamping seat includes two vertically arranged rods, both of which are parallel to the fixed plate, and a connecting shaft is fixed at the intersection of the two rods. The connecting shaft is connected to the moving plate, and the ends of the two rods are pivotally connected to wheels. When the clamping seat clamps the blank placed on the fixed plate, the two wheels of the clamping seat abut against two mutually perpendicular sides of the blank.

[0016] In a possible implementation of the first aspect, the clamp further includes a pressing assembly, wherein the pressing assembly is disposed on both sides of the fixing plate, and the pressing assembly includes:

[0017] A guide seat is fixed to the fixing plate. The guide seat is provided with a first gap and a second gap from top to bottom. The first gap and the second gap both penetrate through both sides of the guide seat. The guide seat is provided with guide grooves on both sides of the first gap. The bottom surface of the first gap of the guide seat is provided with a strip hole that penetrates through the guide seat.

[0018] A pressure plate, with guide pins fixed at both ends and a limiting pin fixed at the bottom, is disposed in the first gap, and the two guide pins are respectively adapted to be embedded in the two guide grooves;

[0019] The driven member has a push pin and a limiting part at its two ends, respectively. The limiting part is provided with a vertically penetrating limiting hole. The limiting part is fitted into the second gap with a clearance fit. The limiting pin passes through the strip hole and the limiting hole.

[0020] When the two connecting members move outward to both sides of the fixed plate until the clamping seat clamps the blank placed on the fixed plate, the connecting members continue to move and push the push pin to move, so that the driven member drives the pressure plate to move downward along the guide groove to press the blank on the fixed plate downward.

[0021] In one possible implementation of the first aspect, the pressing assembly further includes a push rod, a transmission component, and a limiting sleeve;

[0022] Both ends of the connector are fixed with push rods, and the push rods have an inclined first slope on the side facing the middle of the connector, and the first slopes on both sides of the connector are parallel to each other.

[0023] The two sides of the transmission component are transmission parts, and the middle of the transmission component is a transmission rib connecting the two transmission parts. The transmission rib is inclined relative to the two transmission parts. The outward-facing sides of the two transmission parts are provided with a second inclined surface, and the two second inclined surfaces are parallel to each other.

[0024] The limiting sleeve is fixed to the bottom surface of the fixed plate. The limiting sleeve is provided with a rectangular groove that runs through both sides. The driven member is fitted into the rectangular groove with clearance, so that the two transmission parts can move linearly and extend and retract relative to the rectangular groove.

[0025] The push pin is provided with inclined grooves that pass through both sides. The inclined grooves are inclined relative to the axial direction of the push pin, and the push pin passes into the limiting sleeve. The transmission rib passes through the inclined groove with clearance fit. When the connecting member moves to the position where the two push rods are close to the limiting sleeve, the two first inclined surfaces contact the two second inclined surfaces respectively, driving the transmission member to move to one side of the rectangular groove, pulling the push pin to move in the direction of the fixed plate, and driving the pressure plate to move downward along the guide groove.

[0026] In one possible implementation of the first aspect, the push pin is fitted with a second spring, the two ends of which abut against the limiting sleeve and the limiting portion respectively, and the elastic force of the second spring generates a thrust that pushes the limiting portion outward from the fixed plate.

[0027] Secondly, the present invention also discloses a processing device having a worktable for placing a blank and a processing tool disposed above the worktable, wherein the processing device is equipped with the aforementioned fixture, and the fixing plate of the fixture is fixed to the worktable.

[0028] As can be seen from the above description of the structure of the present invention, compared with the prior art, the present invention has the following advantages: When the fixture of the present invention fixes the blank of the ceramic mold, during the process of the connecting member moving outward to both sides of the fixed plate, the sliding block swings with the connecting rod and moves towards the middle, releasing the constraint on the top pressing member. At this time, the first spring releases the preload force to drive the top pressing member to automatically move towards the middle of the fixed plate, thereby pushing the clamping seats to close synchronously. During this process, the elastic deformation characteristics of the first spring convert the mechanical displacement into a continuous and balanced contact pressure, causing the two clamping seats to move towards the middle of the fixed plate synchronously, realizing the positioning of the blank in the middle of the fixed plate, forming an adaptive clamping positioning, and providing a stable constraint basis without stress concentration for high-precision machining. Attached Figure Description

[0029] Figure 1 This is a top-view three-dimensional structural diagram of the fixture of the present invention after clamping the blank.

[0030] Figure 2 for Figure 1An enlarged schematic diagram of point A in the middle.

[0031] Figure 3 This is a three-dimensional structural diagram of the fixture of the present invention after clamping the blank, viewed from below.

[0032] Figure 4 for Figure 3 A magnified diagram of point B in the middle.

[0033] Figure 5 for Figure 3 A diagram showing what happens after the moving panel is hidden.

[0034] Figure 6 for Figure 5 A magnified diagram of point C.

[0035] Figure 7 for Figure 5 A magnified diagram of point D in the middle.

[0036] Figure 8 This is a bottom view of the fixture of the present invention after clamping the blank.

[0037] Figure 9 for Figure 8 A cross-sectional view along the EE direction.

[0038] Figure 10 for Figure 9 A magnified diagram at point F in the middle.

[0039] Figure 11 This is a schematic diagram showing the swing plate connected to the moving plate via a tie rod under the fixed plate.

[0040] Figure 12 This is a three-dimensional structural diagram of the driven component connecting the guide seat, pressure plate, limit sleeve, and transmission component.

[0041] Figure 13 for Figure 12 A schematic diagram showing the concealed guide seat and limiting sleeve.

[0042] Figure 14 A three-dimensional structural diagram of the push rod used to fix the connector.

[0043] Figure 15 A schematic diagram of a processing device for setting up the fixture of the present invention. Detailed Implementation

[0044] To make the objectives, technical solutions, and advantages of this application clearer, the application will now be described in further detail with reference to the accompanying drawings.

[0045] Hereinafter, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature.

[0046] Furthermore, in this application, directional terms such as "upper" and "lower" are defined relative to the indicated placement of the components in the accompanying drawings. It should be understood that these directional terms are relative concepts, used for relative description and clarification, and can change accordingly depending on the placement of the components in the accompanying drawings.

[0047] This invention provides a fixture for processing ceramic molds and processing equipment configured with the fixture, as shown in the attached figure. Figure 1 and 3 As shown, the fixture includes a fixed plate 1, a clamping assembly, a driving assembly, and a pressing assembly. The upper surface of the fixed plate 1 is used to hold a blank 5, which is the blank used for processing ceramic molds. Connecting plates 11 are fixed to both sides of the bottom surface of the fixed plate 1. The clamping assembly, driving assembly, and pressing assembly are all located below the fixed plate 1 and between the two connecting plates 11. Clamping assemblies are located at both ends of the fixed plate 1, and pressing assemblies are located on both sides. These components work together. The driving assembly controls the opening and closing movement of the clamping assembly to achieve clamping and positioning of the blank 5 and apply reliable clamping force. The pressing assembly further applies downward pressure perpendicular to the surface of the fixed plate 1 after clamping, effectively improving the positioning accuracy and vibration resistance of the blank 5 during processing, ensuring the quality and efficiency of ceramic mold processing.

[0048] As attached Figures 1 to 3 As shown, the clamping assembly includes a movable plate 21 and a clamping seat 22. The movable plate 21 is restricted to sliding relative to the middle and sides of the fixed plate 1. This restriction can be achieved by fixing two parallel first slide rails to the bottom of the fixed plate 1. Each of the first slide rails is adapted to connect to a first slider, and the first sliders of both slide rails are fixed to the movable plate 21. Through the sliding pair formed by the first slide rails and the first sliders, the movable plate 21 is restricted to linear movement only along a direction parallel to the length of the fixed plate 1, i.e., directional sliding relative to the middle position of the fixed plate 1. Furthermore, both ends of the movable plate 21 extend to the sides of the fixed plate 1, and both ends of the movable plate 21 are connected to the clamping seat 22.

[0049] Please refer to the appendix. Figures 4 to 6The driving assembly includes a first spring 31, a pressing member 32, a sliding block 33, a first connecting rod 341, a second connecting rod 342, and a connecting member 35 located at the middle of the bottom of the fixed plate 1, both ends of the fixed plate 1. The pressing member 32 slides between the connecting plate 11 and the moving plate 21. Preferably, the first slide rail may be supplemented with an additional first slider not fixed to the moving plate 21, and the pressing member 32 is fixed to the first slider not fixed to the moving plate 21. The two ends of the first spring 31 abut against the connecting plate 11 and the pressing member 32, respectively, and the first spring 31 generates a thrust that pushes the pressing member 32 towards the middle of the fixed plate 1.

[0050] Two connecting pieces 35 are provided in the middle of the fixed plate 1. The two connecting pieces 35 move synchronously relative to the two ends of the fixed plate 1 in a mirror manner. (See attached diagram.) Figures 8 to 10 The drive assembly also includes a rotating shaft 361, a gear 362, and a rack 363. The rotating shaft 361 is restricted to rotating around the center of the bottom surface of the fixed plate 1. This restriction can be achieved by embedding a bearing in the center of the bottom surface of the fixed plate 1, with one end of the rotating shaft 361 inserted into and restricted within the bearing by a snap ring. The gear 362 is coaxially fixed to the rotating shaft 361. Both connecting members 35 fix the rack 363, and the racks 363 of the two connecting members 35 are located on both sides of the rotating shaft 361 and mesh with the gear 362. The rotation of the gear 362 drives the two racks 363 to move in opposite directions, thereby causing the two connecting members 35 to perform mirror synchronous displacement relative to the two ends of the fixed plate 1. Preferably, a second slide rail is fixed to both sides of the gear 362 at the bottom of the fixed plate 1. Both second slide rails are adapted to connect to sliding second sliders. The two racks 363 are respectively fixed to the second sliders of the two second slide rails to restrict the racks 363 to slide linearly only relative to the two sides of the fixed plate 1.

[0051] Furthermore, the drive assembly also includes a first transmission wheel 371, a second transmission wheel 372, and a drive motor 373. The first transmission wheel 371 is fixed to the rotating shaft 361, the drive motor 373 is fixed within the fixed plate 1, and the output shaft of the drive motor 373 is fixed to the second transmission wheel 372. The second transmission wheel 372 and the first transmission wheel 371 can form a transmission connection via a transmission belt, thereby enabling the drive motor 373 to drive the rotating shaft 361 to rotate, which in turn drives the gear 362 to rotate, achieving automatic movement of the two connecting parts 35. Preferably, both the first transmission wheel 371 and the second transmission wheel 372 can be synchronous pulleys, and the transmission belt can be a synchronous belt.

[0052] As attached Figure 7As shown, the sliding block 33 is restricted to sliding relative to the middle and side of the fixed plate 1, and the sliding block 33 abuts against the side of the pressing member 32 facing away from the first spring 31. Preferably, the first slider of the two first slide rails that is not connected and fixed to the moving plate 21 is connected and fixed by the connecting rod 321, and the sliding block 33 applies a pushing force and blocking effect on the back of the pressing member 32 by abutting against the connecting rod 321. The structure connecting the sliding block 33 and the fixed plate 1 can be such that the middle of both ends of the bottom surface of the fixed plate 1 is fixed with a third slide rail, the third slide rail is connected to a third slider adapted to slide, and the sliding block 33 is fixed to the third slider. One end of the first connecting rod 341 and the second connecting rod 342 are both pivotally connected to the sliding block 33, one end of the first connecting rod 341 is pivotally connected to one of the connecting members 35, and the other end of the second connecting rod 342 is pivotally connected to the other connecting member 35. In this embodiment, the pivot connection can be constructed by inserting a pin to form a rotatable pair, so that the two pivotally connected parts maintain flexible rotational freedom during force transmission.

[0053] After the blank 5 to be processed into a mold is placed on the fixed plate 1, when the two connecting parts 35 move outward to both sides of the fixed plate 1, they simultaneously pull the first connecting rod 341 and the second connecting rod 342 to swing, thereby driving the two sliding blocks 33 to move synchronously towards the middle area of ​​the fixed plate 1. During this process, the top pressing part 32 is released from the top constraint due to the departure of the sliding block 33, that is, it loses its obstruction. Then, under the continuous elastic force applied by the first spring 31, it automatically moves towards the middle of the fixed plate 1, so that the two clamping seats 22 move synchronously towards the middle of the fixed plate 1 until the clamping seats 22 on both sides of the fixed plate 1 clamp the two ends of the blank 5, realizing the positioning of the blank 5 in the middle of the fixed plate 1. During this clamping process, the elastic potential energy of the first spring 31 is converted into the continuous clamping force of the clamping seats 22 on the blank 5, forming an adaptive clamping positioning, providing a reliable positioning basis for high-precision processing of ceramic molds.

[0054] After the blank 5 is processed, when the two connecting parts 35 move towards the middle of the fixed plate 1, they pull the first connecting rod 341 and the second connecting rod 342 to swing, thereby driving the two sliding blocks 33 to move synchronously towards both ends of the fixed plate 1. During this process, the sliding blocks 33 push the top pressing part 32 to move towards the end of the fixed plate 1 and compress the first spring 31, releasing the elastic preload force transmission to the moving plate 21. The moving plate 21 then loses the continuous pressure applied by the first spring 31, completely releasing the clamping constraint between the processed blank 5 and the clamping seat 22. This release mechanism, through the orderly release of elastic potential energy and the precise coordination of mechanical linkage, achieves the rapid and damage-free separation of the blank 5 from the fixture, ensuring that the high-brittleness ceramic mold blank maintains its structural integrity during unloading, while providing an efficient and reliable clamping cycle guarantee for continuous production.

[0055] In addition, as attached Figure 11As shown, the clamping assembly also includes a swing rod 23. The center of the swing rod 23 is sleeved outside the rotating shaft 361 to form an axially fixed rotation. Both ends of the swing rod 23 and the two moving plates 21 are connected by pull rods 24, and both ends of the pull rods 24 are pivotally connected to the swing rod 23 and the moving plates 21, respectively. In this structure, the swing of the swing rod 23 links the two pull rods 24 to synchronously pull the two moving plates 21 to perform mirror-symmetrical displacement, which can ensure that the clamping seats 22 of the two moving plates 21 move synchronously towards the middle of the fixed plate 1, thereby ensuring that the blank 5 is clamped in the middle position of the fixed plate 1. Further, the structure of the clamping seat 22 can be as shown in the attached figure. Figure 2 As shown, the clamping seat 22 includes two vertically arranged rods 221, both parallel to the fixed plate 1. The ends of both rods 221 are pivotally connected to rotating wheels 223. A connecting shaft 222 is fixed at the intersection of the two rods 221. The connecting shaft 222 can be fixed to the bearing seat fixed to the moving plate 21 to form a connection, allowing the clamping seat 22 and its two rotating wheels 223 to rotate relative to the moving plate 21. When the two moving plates 21 move inward synchronously to clamp the blank 5, the clamping seat 22 adaptively rotates to ensure that the two rotating wheels 223 precisely abut against the two orthogonal side surfaces of the blank 5. This contact method establishes a positioning reference simultaneously in the X and Y axes, forcibly correcting the center of the blank 5 to the central axis of the fixed plate 1, achieving automatic calibration of the zero point position of the machining coordinate system, and providing a basic positioning guarantee for the high-precision machining of ceramic molds.

[0056] It is worth mentioning that, given the widespread adherence to international standard dimensional systems in the tile manufacturing industry, the corresponding mold blanks also exhibit highly standardized external dimensions. The fixture of this invention utilizes a modularly designed clamping base 22 with interchangeable rod lengths 221, enabling a precise mapping between the rod's geometric parameters and standard-specification blanks. When the moving plate 21 is driven towards the center of the fixed plate 1, the rotating wheel 223 at the end of the newly configured rod 221 automatically aligns with the orthogonal side profile of the current-specification blank 5, maintaining the original positioning accuracy while achieving dimensional adaptation. This allows for clamping size switching with only a single component replacement, significantly improving tooling reusability and providing a highly compatible clamping solution for continuous production of multi-specification tile molds.

[0057] Please refer to the appendix. Figures 12 to 14The pressing assembly includes a guide seat 41, a pressure plate 42, and a follower 43. The guide seat 41 is fixed to the fixed plate 1. The guide seat 41 has a first gap 411 and a second gap 412 arranged sequentially from top to bottom. Both the first gap 411 and the second gap 412 penetrate through both sides of the guide seat 41, and their penetration direction is towards the center of the fixed plate 1. The guide seat 41 has guide grooves 413 on both sides of the first gap 411. The bottom surface of the first gap 411 of the guide seat 41 has a strip hole 414 that penetrates to the bottom surface of the guide seat 41. The pressure plate 42 has guide pins 421 fixed at both ends and a limiting pin 422 fixed at the bottom. The pressure plate 42 is located in the first gap 411, and the two guide pins 421 are respectively fitted into the two guide grooves 413. The two ends of the follower 43 are a push pin 432 and a limiting part 431, respectively. The limiting part 431 is provided with a vertically penetrating limiting hole. The limiting part 431 is fitted into the second gap 412 with clearance fit. The limiting pin 422 passes through the strip hole 414 and the limiting hole.

[0058] When the two connecting pieces 35 continue to move outward to both sides of the fixed plate 1 after completing the circumferential clamping of the blank 5, the connecting pieces 35 continue to move and push the push pin 432 to move. This action is converted by the cooperation of the limiting hole and the limiting pin 422, so that the driven piece 43 drives the pressure plate 42 to move downward along the guide groove 413 until the lower surface of the pressure plate 42 applies uniform vertical pressure to the blank 5 carried on the fixed plate 1, so as to press the blank 5 downward and ensure that the blank 5 is parallel and fixed relative to the fixed plate 1. This fixing method first achieves precise positioning of the blank 5 on four sides in the X-axis and Y-axis planes through the clamping seat 22, and then completes stable pressing in the Z-axis direction through the pressure plate 42. This step-by-step fixing sequence effectively avoids the stress superposition phenomenon caused by the simultaneous loading of multi-directional forces by isolating the clamping force and the downward pressure application stage, ensuring that the blank 5 maintains structural integrity throughout the clamping process, and establishing a three-dimensional zero-displacement constraint system for high-precision machining of ceramic molds.

[0059] Continue to refer to the appendix Figures 12 to 14The pressing assembly also includes push rods 44, transmission components 45, and limiting sleeves 46. Push rods 44 are fixed to both ends of the connecting member 35. The push rods 44 have an inclined first slope 441 on the side facing the middle of the connecting member 35, and the first slopes 441 of the push rods 44 on both sides of the connecting member 35 are parallel to each other. The transmission component 45 has transmission parts 451 on both sides, and a transmission rib 453 connecting the two transmission parts 451 in the middle. The transmission rib 453 is inclined relative to the two transmission parts 451. The outward-facing sides of both transmission parts 451 have second slopes 452, and the two second slopes 452 are parallel to each other. The gap between the two first slopes 441 is adapted to allow the transmission component 45 to be embedded. When the transmission component 45 is fully embedded between the two push rods 44, its second slope 452 and the first slope 441 of the push rod 44 form a conjugate wedge-shaped contact surface. The limiting sleeve 46 is fixed to the bottom surface of the fixing plate 1. The limiting sleeve 46 is provided with a rectangular groove 461 that runs through both sides. The driven member 43 is fitted into the rectangular groove 461 with clearance, so that the two transmission parts 451 move linearly and telescopically relative to the rectangular groove 461.

[0060] The push pin 432 is provided with inclined grooves 433 extending radially through both sides, and the inclined grooves 433 are inclined relative to the axial direction of the push pin 432. The push pin 432 is inserted into the limiting sleeve 46, and the transmission rib 453 passes through the inclined groove 433 with clearance fit, causing the transmission rib 453 to move telescopically relative to the inclined groove 433. When the connecting member 35 drives the push rod 44 to move close to the working position of the limiting sleeve 46, the first inclined surface 441 of the two push rods 44 respectively forms a wedge-shaped contact with the second inclined surface 452 on both sides of the transmission member 45, forcing the transmission member 45 to move relative to both sides of the rectangular groove 461. This displacement, through the inclined surface fit relationship between the inclined groove 433 and the transmission rib 453, converts the linear motion of the transmission member 45 into a composite displacement trajectory of the push pin 432, that is, the push pin 432 synchronously generates a horizontal displacement component outside the fixed plate 1 under the guidance of the inclined groove 433. The composite displacement is transmitted through the guide pin 422 and the guide hole, which forces the pressure plate 42 to perform oblique movement along the guide groove 413 trajectory, and finally realizes the composite displacement path of the pressure plate 42 synchronously radially retracting towards the center of the fixed plate 1 during the vertical downward movement.

[0061] Furthermore, a second spring 47 is sleeved on the push pin 432. The two ends of the second spring 47 abut against the limiting sleeve 46 and the limiting part 431, respectively, and the elastic force of the second spring 47 forms a thrust that pushes the limiting part 431 outward from the fixed plate 1. During the process of the connecting member 35 driving the push rod 44 to move, so that the first inclined surface 441 contacts the second inclined surface 452 of the transmission member 45 and pushes the driven member 43 to perform clamping displacement, the second spring 47 simultaneously generates axial compression energy. When the blank 5 is finished and needs to be unloaded, the two connecting members 35 move synchronously towards the middle area of ​​the fixed plate 1, driving the push rod 44 to move inward to release the constraint on the transmission member 45. At this time, the second spring 47 releases its stored energy, driving the limiting part 431 to automatically reset displacement along the outer direction of the fixed plate 1. This displacement is guided by the limiting pin 422 and the limiting hole, and the traction pressure plate 42 is lifted vertically upward along the trajectory of the guide groove 413 while simultaneously moving radially outward from the fixed plate 1. The oblique exit path can avoid the space above the blank 5, forming an unobstructed unloading area, so that the finished blank 5 can be directly removed from the surface of the fixed plate 1 by vertical hoisting.

[0062] Furthermore, when the second spring 47 pushes the limiting part 431 to move until the guide pin 421 of the pressure plate 42 hits the upper end of the guide groove 413, the pushing pin 432 synchronously pulls the transmission part 45 to move until the two transmission parts 451 automatically correct themselves to a symmetrical and equidistant distribution on both sides of the limiting sleeve 46, that is, attached Figure 8 The structure ensures that, in the non-working state, the two second inclined surfaces 452 always maintain a preset fixed position. When the connecting member 35 drives the push rod 44 to the end of its working stroke, the first inclined surface 441 of the push rod 44 precisely embeds into the external space of the transmission member 45, forming an instantaneous conjugate contact with the second inclined surface 452. This automatic alignment mechanism, utilizing the second spring 47, ensures that the two first inclined surfaces 441 and the two second inclined surfaces 452 can accurately align each time, completely eliminating the motion lag caused by accumulated assembly errors, and significantly improving the positional repeatability and motion synchronization of the pressing assembly during continuous operation.

[0063] As attached Figure 15 As shown, this invention also discloses a processing device for processing ceramic molds. This processing device is equipped with the fixture of this invention and has a worktable 61 for placing a blank 5. The worktable 61 moves relative to the processing tool 62 along the X and Y axes of a plane. A fixing plate 1 is fixed to the worktable 61. During operation, the movement of the worktable 61 causes the blank 5, clamped and fixed on the fixing plate 1, to move relative to the processing tool 62. Combined with the movement of the processing tool 62 relative to the worktable 61, the blank 5 is processed into a mold shape for manufacturing ceramics. Specifically, the working method of this invention is as follows:

[0064] Place the blank 5 to be processed into a mold on the upper surface of the fixing plate 1;

[0065] Under the driving force, the two connecting parts 35 move outward to both sides of the fixed plate 1. The first connecting rod 341 and the second connecting rod 342 swing together under the traction of the connecting parts 35. This causes the two sliding blocks 33 to move synchronously towards the middle area along the length of the fixed plate 1 under the swing drive of the connecting rods. This causes the top pressing part 32 to be released from constraint due to the movement of the sliding block 33 and to automatically move towards the middle of the fixed plate 1 under the elastic preload of the first spring 31. This causes the clamping seat 22 to move synchronously towards the center of the fixed plate 1 until the clamping seats 22 on both sides clamp and position the blank 5 circumferentially.

[0066] After the two connecting parts 35 complete the circumferential clamping of the blank 5, they continue to move outward to both sides of the fixed plate 1. The push rod 44 moves with the connecting parts 35, so that the first inclined surface 441 and the second inclined surface 452 of the transmission part 45 form a wedge-shaped contact. The transmission part 45 is oriented to the inside of the fixed plate 1 along the axial direction of the rectangular groove 461 under the action of the first inclined surface 441 and the second inclined surface 452. Through the cooperation of the inclined groove 433 and the transmission rib 453, it drives the push pin 432 to move, so that the pressure plate 42 moves downward along the trajectory of the guide groove 413 under the guidance of the limiting pin 422 and the limiting hole, so that the blank 5 is subjected to uniform vertical pressure to achieve stable pressing in the Z-axis direction.

[0067] The blank part 5 is subjected to cutting processing by machining equipment;

[0068] After processing, the two connecting parts 35 move synchronously to the middle area of ​​the fixed plate 1. The push rod 44 moves inward with the connecting parts 35 to release the constraint on the transmission part 45. The second spring 47 releases its stored energy to drive the limiting part 431 to reset displacement in the direction of the outer side of the fixed plate 1. Under the guidance of the limiting pin 422, the pressure plate 42 is lifted vertically upward along the trajectory of the guide groove 413 and moves radially outward with the fixed plate 1. The clamping seat 22 moves with the displacement of the moving plate 21 to release the clamping constraint on the blank 5. The blank 5 is removed from the fixed plate 1.

[0069] In summary, in the fixture of the present invention, the driving component drives the moving plate 21 of the clamping component to move through the connecting member 35, the first connecting rod 341, the second connecting rod 342, the sliding block 33, and the first spring 31, so that the clamping seat 22 clamps or releases the blank 5 placed on the fixed plate 1, and works in conjunction with the swing rod 23 to ensure synchronous movement and center positioning. The pressing component converts the movement of the connecting member 35 into the downward movement of the pressure plate 42 by the wedge contact of the push rod 44 and the transmission member 45, applying vertical pressure, and achieves reset in conjunction with the second spring 47. All components work together. The driving component controls the clamping component to achieve circumferential clamping and positioning of the blank 5, and the pressing component further applies vertical downward pressure, effectively improving the positioning accuracy and vibration resistance stability of the blank 5 during processing, ensuring uniform clamping force and dynamic stability, and guaranteeing the accuracy of ceramic mold processing.

[0070] The above are merely specific embodiments of the present invention, but the design concept of the present invention is not limited thereto. Any non-substantial modifications made to the present invention using this concept shall be considered as infringing upon the protection scope of the present invention.

Claims

1. A fixture for processing ceramic molds, characterized in that, The fixture includes: A fixing plate, the upper surface of which is used to place the blank, and connecting plates are fixed on both sides of the bottom surface of the fixing plate; A clamping assembly is provided at both ends of the fixed plate. The clamping assembly includes a movable plate and a clamping seat. The movable plate is restricted to slide relative to the middle and side of the fixed plate. Both ends of the movable plate are connected to the rotatable clamping seat. A driving assembly includes a first spring, a pressing member, a sliding block, a first connecting rod, and a second connecting rod, each disposed at both ends of the bottom of a fixed plate, and a connecting member disposed at the middle position of the bottom of the fixed plate. The pressing member slides between the connecting plate and the moving plate. The two ends of the first spring abut against the connecting plate and the pressing member, respectively, and the first spring generates a thrust that pushes the pressing member toward the middle of the fixed plate. Two connecting members are disposed in the middle of the fixed plate, and the two connecting members move synchronously relative to the two ends of the fixed plate in a mirror manner. The sliding block is restricted to sliding relative to the middle and side of the fixed plate, and the sliding block abuts against the side of the pressing member facing away from the first spring. One end of each of the first and second connecting rods is pivotally connected to the sliding block, the other end of the first connecting rod is pivotally connected to one of the connecting members, and the other end of the second connecting rod is pivotally connected to the other connecting member. When the two connecting members move outward to both sides of the fixed plate, they pull the first connecting rod and the second connecting rod to swing, causing the two sliding blocks to move synchronously towards the middle of the fixed plate. The top pressing member loses its obstruction and moves towards the middle of the fixed plate under the elastic force of the first spring, causing the clamping seat to move towards the middle of the fixed plate. The first spring forms the clamping force at both ends of the fixed plate to clamp the blank placed on the fixed plate. When the two connecting parts move toward the middle of the fixed plate, they pull the first connecting rod and the second connecting rod to swing, causing the two sliding blocks to move synchronously toward both ends of the fixed plate. The sliding blocks push the top pressing member toward the end of the fixed plate and compress the first spring, causing the moving plate to lose the pressure of the first spring, thereby causing the blank placed on the fixed plate to lose the clamping force of the clamping seat.

2. The fixture for ceramic mold processing as described in claim 1, characterized in that, The clamping assembly also includes a swing rod. A pivot is provided at the center of the bottom surface of the fixed plate. The center of the swing rod is sleeved outside the pivot to rotate axially. Both ends of the swing rod and the two movable plates are connected by a pull rod, and both ends of the pull rod are pivotally connected to the swing rod and the movable plate, respectively.

3. The fixture for ceramic mold processing as described in claim 1, characterized in that, The drive assembly further includes a rotating shaft, a gear, and a rack. The rotating shaft is restricted to rotating at the center of the bottom surface of the fixed plate. The gear is coaxially fixed to the rotating shaft. The rack is fixed to both of the connecting members, and the racks of the two connecting members are respectively located on both sides of the rotating shaft and mesh with the gear.

4. The fixture for ceramic mold processing as described in claim 3, characterized in that, The drive assembly further includes a first transmission wheel, a second transmission wheel, and a drive motor. The first transmission wheel is fixed by the rotating shaft, the drive motor is fixed inside the fixed plate, and the output shaft of the drive motor is fixed to the second transmission wheel. The second transmission wheel and the first transmission wheel are connected in a transmission manner.

5. The fixture for ceramic mold processing as described in claim 1, characterized in that, The clamping seat includes two vertically arranged rods, both of which are parallel to the fixed plate. A connecting shaft is fixed at the intersection of the two rods, and the connecting shaft is connected to the moving plate. A rotating wheel is pivotally connected to the end of each of the two rods. When the clamping seat clamps the blank placed on the fixed plate, the two rotating wheels of the clamping seat abut against two mutually perpendicular sides of the blank.

6. The fixture for ceramic mold processing as described in claim 1, characterized in that, The clamp also includes a pressing assembly, which is provided on both sides of the fixing plate. The pressing assembly includes: A guide seat is fixed to the fixing plate. The guide seat is provided with a first gap and a second gap from top to bottom. The first gap and the second gap both penetrate through both sides of the guide seat. The guide seat is provided with guide grooves on both sides of the first gap. The bottom surface of the first gap of the guide seat is provided with a strip hole that penetrates through the guide seat. A pressure plate, with guide pins fixed at both ends and a limiting pin fixed at the bottom, is disposed in the first gap, and the two guide pins are respectively adapted to be embedded in the two guide grooves; The driven member has a push pin and a limiting part at its two ends, respectively. The limiting part is provided with a vertically penetrating limiting hole. The limiting part is fitted into the second gap with a clearance fit. The limiting pin passes through the strip hole and the limiting hole. When the two connecting members move outward to both sides of the fixed plate until the clamping seat clamps the blank placed on the fixed plate, the connecting members continue to move and push the push pin to move, so that the driven member drives the pressure plate to move downward along the guide groove to press the blank on the fixed plate downward.

7. The fixture for ceramic mold processing as described in claim 6, characterized in that, The pressing assembly also includes a push rod, a transmission component, and a limiting sleeve; Both ends of the connector are fixed with push rods, and the side of the push rod facing the middle of the connector is provided with an inclined first slope, which is parallel to each other; The two sides of the transmission component are transmission parts, and the middle of the transmission component is a transmission rib connecting the two transmission parts. The transmission rib is inclined relative to the two transmission parts. The two outward-facing sides of the two transmission parts are provided with a second inclined surface, and the two second inclined surfaces are parallel to each other. The limiting sleeve is fixed to the bottom surface of the fixed plate. The limiting sleeve is provided with a rectangular groove that runs through both sides. The driven member is fitted into the rectangular groove with clearance, so that the two transmission parts can move linearly and extend and retract relative to the rectangular groove. The push pin is provided with inclined grooves that pass through both sides. The inclined grooves are inclined relative to the axial direction of the push pin, and the push pin passes into the limiting sleeve. The transmission rib passes through the inclined groove with clearance fit. When the connecting member moves to the position where the two push rods are close to the limiting sleeve, the two first inclined surfaces contact the two second inclined surfaces respectively, driving the transmission member to move to one side of the rectangular groove, pulling the push pin to move in the direction of the fixed plate, and driving the pressure plate to move downward along the guide groove.

8. The fixture for ceramic mold processing as described in claim 7, characterized in that, The push pin is fitted with a second spring, the two ends of which abut against the limiting sleeve and the limiting part respectively, and the elastic force of the second spring forms a thrust that pushes the limiting part outward from the fixed plate.

9. A processing apparatus comprising a worktable for placing a workpiece and a processing tool disposed above the worktable, characterized in that, The processing equipment is equipped with a fixture for processing ceramic molds as described in any one of claims 1 to 8, and the fixing plate is fixed to the worktable.

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