Automatic clamping mechanism for large filter plate drilling

Abstract

The application relates to the technical field of clamping mechanisms, in particular to an automatic clamping mechanism for drilling large filter plates, which comprises a base, a transverse limiting reference, a lower pressing head, a longitudinal moving seat provided with a transverse moving seat in a left-right symmetrical mode, a longitudinal limiting reference, an automatic drilling mechanism, a side pushing assembly and a self-locking stability increasing assembly are arranged on the transverse moving seat. In the application, after the transverse moving seat moves to the longitudinal coordinate position of the to-be-drilled hole position, the longitudinal limiting reference on the transverse moving seat limits and clamps and fixes the workpiece, meanwhile, the automatic drilling mechanism which takes the transverse limiting reference as an installation reference and synchronously moves with the transverse moving seat automatically completes the calibration of the transverse coordinate of the corresponding to-be-processed hole; in the above process, the side pushing assembly automatically applies a forward pushing force along with the movement of the transverse moving seat, so that the workpiece is always closely attached to the transverse limiting reference, and the precision of the transverse limiting reference of the workpiece is strengthened; the longitudinal limiting reference moves along with the transverse moving seat, so that the situation that the to-be-drilled hole position is shielded in the clamping process is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of clamping mechanisms, in particular to an automatic clamping mechanism for drilling large filter plates. BACKGROUND

[0002] As a core component of filter presses, large filter plates need to be processed with high precision to form drainage holes on their circumferential sides. In order to avoid the retention of filtrate at the distal end due to the excessively long single-side drainage path, multiple drainage holes are usually arranged uniformly on the four sides, and the hole positions on the parallel sides are symmetrical to each other.

[0003] Existing automatic drilling processing technology usually uses a single automatic drilling mechanism in combination with an automatic clamping mechanism for drilling. However, for the processing requirement of drilling holes on the four sides of a large filter plate, the processing efficiency of the aforementioned automatic drilling processing technology is relatively low. Moreover, due to the large number of holes, the force application points of the existing automatic clamping mechanism are limited, and in the clamping process, the hole positions are easily blocked, making it difficult to efficiently meet the processing requirements of different hole positions of filter plates of different sizes. In addition, some drilling processing technologies use double drilling mechanisms to perform symmetrical processing simultaneously, but the existing automatic clamping mechanism and automatic drilling mechanism are usually independent of each other. Even if the initial calibration is accurate, in the actual processing process, the consistency of the symmetrical hole processing coordinates can be easily affected by factors such as vibration and wear, thereby reducing the overall drilling processing efficiency and the quality of drilling.

[0004] In summary, there is an urgent need for a drilling technology that can quickly and efficiently perform drilling work with high quality and efficiently meet the drilling requirements of filter plates of different sizes. SUMMARY

[0005] This invention provides an automatic clamping mechanism for drilling large filter plates. The mechanism includes: a base for placing the workpiece; a lateral limiting reference for limiting the front end of the workpiece; longitudinal sliding seats symmetrically arranged with transverse sliding seats, the transverse sliding seats sliding synchronously in opposite directions; longitudinal limiting references symmetrically arranged and fixed to their respective transverse sliding seats; an automatic drilling mechanism symmetrically arranged and mounted on their respective transverse sliding seats, feeding synchronously; and a side-pushing assembly symmetrically arranged and including: a hinge member inclined and elastically hinged to the corresponding transverse sliding seat; a contact end unidirectionally rotatable on the hinge member; and when the transverse sliding seat moves towards the workpiece, the contact end... The first contact point contacts the side of the workpiece at the longitudinal limiting reference, and the contact end slides along the side of the workpiece toward the transverse limiting reference as the transverse sliding seat continues to move, while simultaneously causing the hinge to rotate; the self-locking stabilizing assembly is symmetrically arranged and includes: a linkage that contacts the corresponding hinge and can move laterally; a brake that wedges with the linkage and can move vertically; when the hinge rotates, it pushes the linkage to move, and the linkage drives the brake to move down and press against the longitudinal sliding seat through the wedge engagement, increasing the friction between the transverse and longitudinal sliding seats, and the reaction force of the friction increases the pressure of the contact point on the workpiece; the lower pressure head clamps and fixes the workpiece at the longitudinal limiting reference and then moves down to press the workpiece.

[0006] In one possible implementation, the automatic drilling mechanism includes a mounting base and an automatic drilling bit. Synchronization components are provided between symmetrical drill bits and between symmetrical transverse seats. Under the synchronization constraint of the synchronization components, the drill bits remain synchronized during feeding, and the transverse seats remain synchronized during transverse movement. The transverse seats are driven by a push cylinder.

[0007] In one possible implementation, the synchronization assembly includes a sliding seat and a housing. The sliding seats are symmetrically distributed and mounted on corresponding transverse sliding seats. The housing is located between the symmetrical transverse sliding seats and contains a gear and a rack. There are two racks, which mesh with the gears simultaneously and are located on both sides of the gears. A connecting frame is fixedly connected to the rack. The connecting frame slides through the corresponding housing and is fixedly connected to the corresponding sliding seat. In this embodiment, the sliding seats in the synchronization assembly between drill bits are rotatably connected to the corresponding drill bit and slidably connected to the corresponding transverse sliding seat.

[0008] In one possible implementation, the contact end is columnar, and a ratchet and pawl structure is provided between the contact end and the hinge, through which the contact end can rotate unidirectionally.

[0009] In one possible implementation, the longitudinal limiting reference includes a limiting block with a reference surface, the reference surfaces being symmetrically distributed and located on both sides of the corresponding drill bit, and the limiting block being fixedly installed on the corresponding transverse sliding seat.

[0010] In one possible implementation, the linkage includes a sliding body with a plurality of wedge blocks, and a plurality of braking elements evenly distributed laterally, wherein the braking elements correspond one-to-one with the wedge blocks and engage with the corresponding wedge blocks in a wedge shape.

[0011] In one possible implementation, the number of side-pushing components on the transverse seat is at least two and they are located on both sides of the automatic drilling mechanism, while the limiting block is located between the corresponding side-pushing component and the drill bit.

[0012] The technical solution of the present invention has at least one of the following technical effects: In the present invention, after the transverse moving seat moves to the longitudinal coordinate position of the hole to be drilled along with the longitudinal moving seat, the longitudinal limiting reference on the transverse moving seat limits and clamps the workpiece. At the same time, the automatic drilling mechanism, which uses the transverse limiting reference as the installation reference and moves synchronously with the transverse moving seat, automatically completes the calibration of the transverse coordinate of the corresponding hole to be processed. In the above process, the side push component automatically applies a forward thrust as the transverse moving seat moves, so that the workpiece is always in close contact with the transverse limiting reference, which enhances the accuracy of the transverse limiting reference of the workpiece and effectively eliminates the possible backward movement and gap of the workpiece. At the same time, the side push component synchronously drives the self-locking stabilizing component to increase the friction between the transverse moving seat and the longitudinal moving seat, so as to improve the stability of the position state after the transverse moving seat stops, and provide a stable transition environment for the drilling process of the automatic drilling mechanism. The present invention effectively improves the efficiency and quality of drilling, and the longitudinal limiting reference moves with the transverse moving seat, avoiding the situation of obstructing the hole to be drilled during the clamping process, which can efficiently meet the drilling needs of workpieces of different sizes. Attached Figure Description

[0013] Figure 1 This is a schematic diagram showing the structural changes of the filter plate before and after processing.

[0014] Figure 2 This is a schematic diagram of the overall structure of an automatic clamping mechanism for drilling large filter plates provided in an embodiment of the present invention.

[0015] Figure 3 This is a schematic diagram of the base and longitudinal shift seat of an automatic clamping mechanism for drilling large filter plates provided in an embodiment of the present invention.

[0016] Figure 4 This is a schematic diagram of the transverse sliding seat, hinge, and contact end of an automatic clamping mechanism for drilling large filter plates provided in an embodiment of the present invention.

[0017] Figure 5 This is a schematic diagram of the self-locking stabilizing component of an automatic clamping mechanism for drilling large filter plates provided in an embodiment of the present invention.

[0018] Figure 6 This is a top view of the ratchet and pawl structure of an automatic clamping mechanism for drilling large filter plates provided in an embodiment of the present invention.

[0019] Figure 7 This is a schematic diagram of the gears and racks of an automatic clamping mechanism for drilling large filter plates provided in an embodiment of the present invention.

[0020] In the diagram: 1. Base; 2. Lateral limiting reference; 3. Longitudinal moving seat; 4. Lateral moving seat; 5. Longitudinal limiting reference; 51. Reference surface; 52. Limiting block; 6. Automatic drilling mechanism; 61. Mounting seat; 62. Drill bit; 7. Side push assembly; 71. Hinge; 72. Contact end; 73. Ratchet and pawl structure; 8. Self-locking stabilizing assembly; 81. Linking component; 811. Wedge block; 812. Sliding body; 82. Braking component; 9. Downward pressure head; 10. Synchronization assembly; 101. Sliding seat; 102. Housing; 103. Gear; 104. Rack; 105. Connecting frame; 11. Workpiece; 12. Push cylinder. Detailed Implementation

[0021] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described below, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0022] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 An automatic clamping mechanism for drilling large filter plates includes a base 1, a transverse limiting reference 2, a lowering head 9, and a longitudinal shifting seat 3 symmetrically arranged with transverse shifting seats 4. The lowering head 9 is mounted above the base 1. The transverse shifting seat 4 is equipped with a longitudinal limiting reference 5, an automatic drilling mechanism 6, a side-pushing assembly 7, and a self-locking stabilizing assembly 8. The corresponding longitudinal limiting reference 5, automatic drilling mechanism 6, side-pushing assembly 7, and self-locking stabilizing assembly 8 on the symmetrically arranged transverse shifting seat 4 are also symmetrical to each other. The base 1 is used to carry and support the workpiece to be processed. 11 (i.e., large filter plate), the lateral limiting reference 2 is fixedly installed on the base 1 and located in front of the workpiece 11. The lateral limiting reference 2 is used to limit the workpiece 11 placed on the base 1 and determine the initial reference position of the workpiece 11 in the lateral (X-axis). The symmetrical transverse sliding seat 4 is slidably installed on the longitudinal sliding seat 3. The lateral limiting reference 2 is located between the symmetrical transverse sliding seats 4. The transverse sliding seat 4 can slide synchronously in the opposite direction along the lateral (X-axis). The longitudinal sliding seat 3 uses the lateral limiting reference 2 as a reference and can move along the longitudinal (Y-axis). It should be noted that the X-axis is the left-right direction and the Y-axis is the front-back direction.

[0023] Taking the machining process of the first set of symmetrical holes on the left and right sides of workpiece 11, near the front end, as an example: During the machining process, workpiece 11 is first placed on base 1 with its front end abutting against the transverse limiting reference 2 (e.g., Figure 2 As shown), at this point, the initial position of workpiece 11 in the transverse direction (X-axis) is determined. Simultaneously, based on the longitudinal coordinate values ​​of the first set of symmetrical holes, the longitudinal sliding seat 3 is driven to move along the longitudinal direction (Y-axis) to the target position and lock. Since the two automatic drilling mechanisms 6 are symmetrically mounted on the longitudinal sliding seat 3 via the transverse sliding seat 4, the movement of the longitudinal sliding seat 3 can synchronously and precisely align the center of the drilling end of the left automatic drilling mechanism 6 with the Y-coordinate position of the first hole to be processed on the left side of workpiece 11, and align the center of the drilling end of the right automatic drilling mechanism 6 with the Y-coordinate position of the first hole to be processed on the right side of workpiece 11. Thus, the automatic calibration of the longitudinal coordinate positions of the two automatic drilling mechanisms 6 is completed. As the transverse sliding seat 4 moves synchronously relative to the workpiece 11, the longitudinal limiting references 5 on both sides simultaneously move closer to the sides of the workpiece 11 until they firmly abut and clamp the workpiece 11. At this time, the distance between the center of the drilling end of the two automatic drilling mechanisms 6 and their corresponding working sides in the transverse direction (X-axis) is determined. This distance is a known design value or a pre-calibrated value. Combined with the previously determined longitudinal coordinates, the precise coordinates of the two symmetrical holes to be processed are automatically and synchronously calibrated. Thus, the workpiece 11 is reliably clamped, and the coordinate calibration of the first set of symmetrical holes is completed synchronously. Finally, the workpiece 11 is pressed by the lower pressure head 9, so that the workpiece 11 is stably in its current position. Figure 2 As shown, the lower pressing head 9 includes a lifting cylinder and two frames distributed vertically. The upper frame and the lifting cylinder are both fixedly installed on the equipment frame (the equipment frame is existing technology). The lower frame is fixedly connected to the pushing end of the lifting cylinder, and a rectangular guide post is fixedly installed on the upper end of the lower frame. The guide post and the upper frame are slidably connected vertically. The lower frame is controlled by the lifting cylinder to move downward and press the workpiece 11.

[0024] This invention integrates the clamping and fixing of workpiece 11 with the precise coordinate calibration of symmetrical holes to be machined in the same process, completing them seamlessly and synchronously in a short time. This effectively improves the drilling efficiency of multi-row symmetrical holes in large filter plates. Furthermore, the longitudinal limiting reference 5 moves synchronously with the transverse moving seat 4, effectively preventing it from obstructing the holes to be drilled, and efficiently meeting the drilling requirements of workpieces 11 of different sizes. The longitudinal moving seat 3 is controlled to move precisely along the Y-axis and lock its position through a drive device (e.g., a servo motor with a ball screw or precision gear rack, not shown in the figure) and a guide mechanism (e.g., a linear guide rail, not shown in the figure).

[0025] See Figure 2 , Figure 3 , Figure 4 and Figure 6The side-pushing components 7 are symmetrically arranged on the corresponding transverse seats 4. During the synchronous relative movement of the transverse seats 4, the side-pushing components 7 contact the workpiece 11 before the longitudinal limiting reference 5, and move forward along the side of the workpiece 11 as the transverse seats 4 continue to move, thereby automatically generating a forward lateral thrust to continuously press the front end of the workpiece 11 against the transverse limiting reference 2, ensuring the accuracy of the front end reference of the workpiece 11. The side-pushing components 7 include a hinge 71 that is inclined and elastically hinged to the corresponding transverse seat 4 and a contact end 72 that is unidirectionally rotatably mounted on the hinge 71. The contact end 72 is a contact roller. During the movement of the transverse seats 4 toward the side of the workpiece 11, the contact end 72 contacts the side of the workpiece 11 before the longitudinal limiting reference 5. As the transverse seats 4 continue to move, the hinge 71 is blocked by the side of the workpiece 11 and rotates and accumulates elastic force. The contact end 72, while pressing against the side of the workpiece 11, moves forward along the side of the workpiece 11. During the forward movement, the contact end 72 does not rotate and generates a forward sliding friction force. This friction force is converted into a continuous forward lateral thrust acting on the workpiece 11, ensuring that the front end of the workpiece 11 is always in close contact with the transverse limiting reference 2. This effectively eliminates possible gaps and backward movement, and avoids the possibility that the longitudinal limiting reference 5 may cause the workpiece 11 to slightly move backward or vibrate due to friction when it contacts the side of the workpiece 11, which would affect the tight fit between the workpiece 11 and the transverse limiting reference 2. This effectively avoids the generation of positioning errors and thus enhances the stability and accuracy of the reference. After the drilling is completed, the transverse moving seat 4 moves in the reverse direction to reset. Under the action of the elastic force of the hinge 71, the contact end 72 abuts against the side of the workpiece 11 and moves backward along the side of the workpiece 11. At this time, under the action of friction, the contact end 72 can rotate freely, which greatly reduces the backward friction force applied to the workpiece 11, avoids the risk of the workpiece 11 being dragged backward away from the transverse limiting reference 2, and maintains the stability of the reference position. Each transverse seat 4 is equipped with two sets of side push components 7. The two side push components 7 are located on the front and rear sides of the automatic drilling mechanism 6, respectively. Each time drilling is performed, at least one set of side push components 7 on the transverse seat 4 is in working condition to prevent a single side push component 7 from being misaligned with the workpiece 11 and unable to contact the workpiece 11 during drilling on the side and near the end of the workpiece 11.

[0026] See Figure 4 and Figure 6 A ratchet and pawl structure 73 is provided between the contact end 72 and the hinge 71, which allows the contact end 72 to rotate in one direction. Figure 6 As shown, a number of pawls are evenly arranged on the hinge 71 along the circumference of the ratchet.

[0027] See Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6The self-locking stabilizing components 8 are symmetrically arranged and respectively installed on the corresponding transverse sliding seats 4, and are linked with the side-pushing components 7. When the longitudinal limiting reference 5 is about to abut the side of the workpiece 11, the self-locking stabilizing components 8 automatically increase the friction between the transverse sliding seat 4 and the longitudinal sliding seat 3 to improve the stability of the position state when the transverse sliding seat 4 stops moving, thereby improving the stability of the drilling process. Moreover, the reaction force of the self-locking stabilizing components 8 can enhance the pressure of the contact end 72 on the workpiece 11; such as Figure 5 As shown, the self-locking stabilizing component 8 includes a connecting member 81 that contacts and abuts against the corresponding hinge member 71 and can move laterally, and a braking member 82 that wedges with the connecting member 81 and can move vertically. When the contact end 72 contacts the side of the workpiece 11 and moves forward, the hinge member 71 rotates. The rotating hinge member 71 pushes the connecting member 81 to move laterally away from the workpiece 11. The connecting member 81 then wedges with the braking member 82 to move downward and abut against the longitudinal sliding seat 3. On the one hand, by increasing the friction between the transverse sliding seat 4 and the longitudinal sliding seat 3, the stability of the position state of the transverse sliding seat 4 when it stops moving is improved, thereby improving the vibration resistance of the overall structure and providing a stable processing environment for subsequent drilling. On the other hand, the reaction force of the above friction is transmitted to the contact end 72 through the braking member 82, the connecting member 81 and the hinge member 71, increasing the pressure of the contact end 72 on the workpiece 11, and further ensuring that the front end of the workpiece 11 is stably abutted against the transverse limiting reference 2.

[0028] See Figure 4 and Figure 5 The linkage 81 includes a sliding body 812 with a plurality of wedge blocks 811. The sliding body 812 is laterally slidably mounted on the corresponding transverse seat 4, and the end of the sliding body 812 near the workpiece 11 abuts against the hinge 71. There are a plurality of braking elements 82 evenly distributed in the transverse direction, and the braking elements 82 are slidably mounted on the transverse seat 4. The braking elements 82 correspond one-to-one with the wedge blocks 811 and wedge-shapedly engage with the corresponding wedge blocks 811.

[0029] See Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 7A push cylinder 12 is symmetrically mounted on the longitudinal sliding seat 3. The push cylinder 12 corresponds one-to-one with the transverse sliding seat 4 and drives the corresponding transverse sliding seat 4 to move. At the same time, the stability of the transverse sliding seat 4 during the movement is increased by the guide mechanism (such as linear guide rail). The automatic drilling mechanism 6 includes a mounting base 61 and an automatic drilling bit 62. The drill bit 62 is a pneumatic drill bit. The drill bit 62 is mounted on the corresponding transverse sliding seat 4 through the mounting base 61. Synchronization components 10 are provided between the drill bits 62 of the symmetrical automatic drilling mechanism 6 and between the symmetrical transverse sliding seats 4. The synchronization components 10 are designed based on the requirements of high-precision symmetrical machining, dynamic load balance, and adaptability to chip processing environment. The core of the synchronization component 10 lies in the use of rigid mechanical coupling principle to force synchronization. The synchronization component 10 includes a sliding seat 101 and a housing 102. The sliding seats 101 are symmetrically distributed and installed on the corresponding transverse seats 4. The housing 102 is located between the symmetrical transverse seats 4 and a gear 103 and a rack 104 are installed inside the housing 102. There are two racks 104, which are slidably installed in the housing 102. The two racks 104 mesh with the gear 103 at the same time and are located on both sides of the gear 103. A connecting frame 105 is fixedly connected to the rack 104. The two connecting frames 105 slide through the corresponding housing 102 and are fixedly connected to the corresponding sliding seats 101 respectively.

[0030] The rack 104, connecting frame 105, sliding seat 101, and gear 103 constitute a closed force flow circulation system. In this system, when any one of the two racks 104 slides, its motion must be transmitted to the other rack 104 without slippage and in a forced manner through the corresponding gear 103, so that the rack 104 produces a precise displacement that is strictly equal in magnitude and necessarily opposite in direction. This mechanical characteristic fundamentally ensures that the two sliding seats 101, which are fixedly connected to the rack 104 through the connecting frame 105, always move synchronously and in opposite directions. This, in turn, ensures that the symmetrical transverse seat 4 moves synchronously and in opposite directions, and the symmetrical drill bit 62 moves synchronously and in opposite directions, so that the displacement of the symmetrical drill bit 62 is constrained in the mechanical structure to always be mirror image equal. Compared to the scheme using two independent control sources, the design of this invention avoids the problem of decreased synchronization accuracy caused by different response delays or cumulative errors of independent control sources, ensures the consistency of the machining progress of symmetrical holes, facilitates the rapid entry into the machining of the next set of symmetrical holes, and helps to improve the overall machining accuracy, thereby facilitating the rapid and efficient machining of multiple sets of symmetrical holes.

[0031] Meanwhile, during the drilling process, the synchronization component 10 further exhibits excellent dynamic load balancing characteristics: if the drilling resistance on one side of the drill bit 62 increases, the reaction force generated will be transmitted to the rack 104 on that side through the transverse seat 4, the sliding seat 101, and the connecting frame 105. This force will be immediately transmitted to the rack 104 on the other side through the corresponding gear 103, thereby enabling the load torque on both sides to be transmitted to each other and canceled in real time within the rigid coupling system, effectively avoiding unilateral overload, significantly improving the impact resistance and stability of the overall structure during the processing, and providing a guarantee for high-precision drilling.

[0032] See Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 7 The sliding seat 101 in the synchronization assembly 10 between drill bits 62 is rotatably connected to the corresponding drill bit 62 and slidably connected to the corresponding transverse seat 4. The sliding seat 101 in the synchronization assembly 10 between transverse seats 4 is fixedly connected to the corresponding transverse seat 4, and the housing 102 in the synchronization assembly 10 between transverse seats 4 is fixedly installed on the longitudinal seat 3. The housing 102 in the synchronization assembly 10 between drill bits 62 corresponds to the upper end of the housing 102 in the synchronization assembly 10 of the transverse seat 4. The two housings 102 can be sealed and connected to each other and filled with lubricant to keep the gear 103 and rack 104 in a stable meshing state, reduce the friction loss between them, and at the same time, the housing 102 seals and protects the gear 103 and rack 104, which can effectively isolate the chip environment generated by drilling and prevent the chips generated by drilling from affecting the transmission meshing accuracy and reliability of the gear 103 and rack 104.

[0033] See Figure 2 , Figure 3 and Figure 4 The longitudinal limiting reference 5 is a limiting block 52 with a reference surface 51. The limiting blocks 52 are symmetrically distributed and located on the front and rear sides of the corresponding drill bit 62. At the same time, the limiting blocks 52 are also located on the side of the corresponding side push assembly 7 near the drill bit 62. The limiting blocks 52 are fixedly installed on the corresponding transverse sliding seat 4. The symmetrically distributed limiting blocks 52 cooperate with the front and rear sides of the drill bit 62 to form two mutually symmetrical limiting points, which is beneficial to improving the stability of the position state of the workpiece 11 during the processing, thereby improving the stability of the drilling process.

[0034] See Figures 1 to 7The drilling process for workpiece 11 (i.e., the large filter plate) is as follows: Drilling is performed simultaneously on the left and right sides of workpiece 11; first, workpiece 11 is placed on base 1 and the front end of workpiece 11 abuts against the transverse limiting reference 2. At the same time, the longitudinal moving seat 3 is controlled to move to the target position and lock according to the longitudinal coordinate values ​​of the first set of symmetrical holes. Then, the transverse moving seat 4 moves synchronously relative to the workpiece until the longitudinal limiting reference 5 abuts against the corresponding side of workpiece 11 and fixes workpiece 11. Then, the lower frame is controlled to move down and press workpiece 11 by the lifting cylinder. Then, the automatic drilling mechanism 6 performs drilling work synchronously. After drilling is completed, the transverse moving seat 4 moves to the lower side and locks the workpiece 11. The seat 4 moves in the opposite direction and resets synchronously. The frame on the lower side moves up a small distance and separates from the workpiece 11. Then, the longitudinal moving seat 3 moves backward to the longitudinal coordinate position of the second set of symmetrical holes and locks in the current position. Then, the transverse moving seat 4 moves relative to the workpiece again and repeats the aforementioned drilling process. This cycle continues until all the drainage holes on the left and right sides of the workpiece 11 are drilled. After the drilling on the left and right sides is completed, the longitudinal moving seat 3 resets and moves back to the initial position. At the same time, the machining surface of the workpiece 11 is switched so that the left or right side of the workpiece 11 abuts against the transverse limiting reference 2. Then, the entire drilling process can be continued.

[0035] Furthermore, the terms "first," "second," "number one," and "number two" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "number one," or "number two" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0036] In embodiments of the present invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0037] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "connected," "installed," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, an integral connection, a sliding connection, or a rotating connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0038] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made based on the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. An automatic clamping mechanism for drilling large filter plates, characterized in that, include: A base for placing workpieces; Lateral limiting reference is used to limit the front end of the workpiece; A longitudinal sliding seat with a symmetrically arranged transverse sliding seat is provided, and the transverse sliding seats are synchronously and in the opposite direction. The longitudinal limiting references are symmetrically set and fixed on the corresponding transverse sliding seats respectively; The automatic drilling mechanism is symmetrically arranged and installed on the corresponding transverse support, and feeds synchronously. Side-push components, symmetrically arranged and including: A hinge that is tilted and elastically hinged to the corresponding transverse sliding seat; The contact end is unidirectionally rotated and mounted on the hinge; when the transverse slide seat moves toward the workpiece, the contact end contacts the side of the workpiece before the longitudinal limiting reference, and as the transverse slide seat continues to move, the contact end will slide along the side of the workpiece toward the transverse limiting reference, while causing the hinge to rotate. Self-locking stabilizing components, symmetrically arranged and including: A connecting element that contacts the corresponding hinge and can move laterally; A braking component that engages with a wedge-shaped linkage and can move vertically; When the hinge rotates, it will push the linkage to move. The linkage will then drive the brake to move down and press against the longitudinal sliding seat through a wedge fit, increasing the friction between the transverse and longitudinal sliding seats. The reaction force of the friction will increase the pressure of the contact end on the workpiece. The pressure head clamps and fixes the workpiece at the longitudinal limit reference and then moves down to press the workpiece.

2. The automatic clamping mechanism for drilling large filter plates according to claim 1, characterized in that: The automatic drilling mechanism includes a mounting base and an automatic drilling bit. Synchronization components are provided between symmetrical drill bits and between symmetrical transverse seats. Under the synchronization constraint of the synchronization components, the drill bits remain synchronized during feeding, and the transverse seats remain synchronized during transverse movement. The transverse seats are driven by a push cylinder.

3. The automatic clamping mechanism for drilling large filter plates according to claim 2, characterized in that: The synchronization component includes a sliding seat and a housing. The sliding seats are symmetrically distributed and installed on corresponding transverse sliding seats. The housing is located between the symmetrical transverse sliding seats and a gear and a rack are installed inside the housing. There are two racks, which mesh with the gears simultaneously and are located on both sides of the gears. A connecting frame is fixedly connected to the rack. The connecting frame slides through the corresponding housing and is fixedly connected to the corresponding sliding seat. In the synchronization component between drill bits, the sliding seat is rotatably connected to the corresponding drill bit and slidably connected to the corresponding transverse sliding seat.

4. The automatic clamping mechanism for drilling large filter plates according to claim 1, characterized in that: The contact end is columnar, and a ratchet and pawl structure is provided between the contact end and the hinge, which allows the contact end to rotate in one direction.

5. The automatic clamping mechanism for drilling large filter plates according to claim 2, characterized in that: The longitudinal limiting reference includes a limiting block with a reference surface. The reference surfaces are symmetrically distributed and located on both sides of the corresponding drill bit. The limiting block is fixedly installed on the corresponding transverse moving seat.

6. The automatic clamping mechanism for drilling large filter plates according to claim 1, characterized in that: The linkage includes a sliding body with a plurality of wedge blocks, and a plurality of braking components evenly distributed in the transverse direction. The braking components correspond one-to-one with the wedge blocks and engage with the corresponding wedge blocks in a wedge shape.

7. The automatic clamping mechanism for drilling large filter plates according to claim 5, characterized in that: The number of side-pushing components on the transverse shift seat is at least two and they are located on both sides of the automatic drilling mechanism, while the limiting block is located between the corresponding side-pushing component and the drill bit.

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