Automatic clamping mechanism for large filter plate drilling

Abstract

The invention relates to the technical field of clamping mechanisms, in particular to an automatic clamping mechanism for drilling of a large filter plate, which comprises a base, a transverse limiting benchmark, a lower pressing head and a longitudinal moving seat, transverse moving seats are arranged on the longitudinal moving seat in bilateral symmetry, and a longitudinal limiting benchmark, an automatic drilling mechanism, a lateral pushing assembly and a self-locking stability increasing assembly are arranged on the transverse moving seat. After a transverse moving seat moves to a longitudinal coordinate position of a to-be-drilled position along with a longitudinal moving seat, a workpiece is limited, clamped and fixed by a longitudinal limiting reference on the transverse moving seat, and meanwhile, an automatic drilling mechanism which takes a transverse limiting reference as a mounting reference and synchronously moves along with the transverse moving seat automatically completes calibration of transverse coordinates of a corresponding to-be-machined hole; in the process, the lateral pushing assembly automatically exerts forward pushing force along with movement of the transverse moving base so that the workpiece can be tightly attached to the transverse limiting benchmark all the time, and the precision of the transverse limiting benchmark of the workpiece is enhanced; the longitudinal limiting benchmark moves along with the transverse moving base, and the situation that the hole position to be drilled is blocked 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 a possible implementation, the linkage comprises a sliding body provided with a plurality of wedge-shaped blocks, and a plurality of brake members are uniformly distributed in the transverse direction and correspond to the wedge-shaped blocks in one-to-one correspondence and wedge-shaped cooperation.

[0011] In a possible implementation, the number of side pushing assemblies on the transverse moving seat is at least two and is located on both sides of the automatic drilling mechanism, and the limiting block is located between the corresponding side pushing assembly and the drill bit.

[0012] The technical scheme of the present application has at least one of the following technical effects: in the present application, after the transverse moving seat moves to the longitudinal coordinate position of the to-be-drilled hole together with the longitudinal moving seat, the longitudinal limiting reference on the transverse moving seat limits and clamps the workpiece, and at the same time, the automatic drilling mechanism, which takes 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 to-be-processed hole; and in the above process, the side pushing assembly automatically applies a forward pushing force with the movement of the transverse moving seat, so that the workpiece is always tightly attached to the transverse limiting reference, the accuracy of the transverse limiting reference of the workpiece is strengthened, and the possible backward movement and gap of the workpiece are effectively eliminated, and at the same time, the synchronous driving of the self-locking stability increasing assembly of the side pushing assembly increases 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 switching environment for the drilling processing of the automatic drilling mechanism; the present application effectively improves the efficiency and quality of the drilling processing as a whole, and the longitudinal limiting reference moves together with the transverse moving seat, so that the shielding of the to-be-drilled hole position during the clamping process is avoided, and the drilling requirements of workpieces of different sizes can be efficiently met. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a schematic diagram of the structure change of the filter plate before and after processing.

[0014] Figure 2 is a schematic diagram of the overall structure of an automatic clamping mechanism for drilling a large filter plate provided by an embodiment of the present application.

[0015] Figure 3 is a schematic diagram of the structure of the base and the longitudinal moving seat of an automatic clamping mechanism for drilling a large filter plate provided by an embodiment of the present application.

[0016] Figure 4 is a schematic diagram of the structure of the transverse moving seat, the hinged member and the contact end of an automatic clamping mechanism for drilling a large filter plate provided by an embodiment of the present application.

[0017] Figure 5 is a schematic diagram of the structure of a self-locking stability increasing assembly of an automatic clamping mechanism for drilling a large filter plate provided by an embodiment of the present application.

[0018] Figure 6 is a schematic diagram of the structure of a ratchet and pawl structure of an automatic clamping mechanism for drilling a large filter plate provided by an embodiment of the present application.

[0019] Figure 7 Figure is a schematic structural diagram of a gear and a rack of an automatic clamping mechanism for large filter plate drilling provided by an embodiment of the present application.

[0020] In the figure: 1, base; 2, transverse limiting reference; 3, longitudinal moving seat; 4, transverse moving seat; 5, longitudinal limiting reference; 51, reference surface; 52, limiting block; 6, automatic drilling mechanism; 61, mounting seat; 62, drill bit; 7, side pushing assembly; 71, hinged piece; 72, contact end; 73, ratchet pawl structure; 8, self-locking stability increasing assembly; 81, linkage; 811, wedge-shaped block; 812, sliding body; 82, brake piece; 9, downward pressing head; 10, synchronous assembly; 101, sliding seat; 102, box body; 103, gear; 104, rack; 105, connecting frame; 11, workpiece; 12, pushing cylinder. DETAILED DESCRIPTION

[0021] In order to make the above-mentioned objectives, features and advantages of the present application more apparent and comprehensible, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, a large number of specific details are set forth in order to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described below, and those skilled in the art can make similar improvements without departing from the concept of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0022] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 , an automatic clamping mechanism for large filter plate drilling, comprising a base 1, a transverse limiting reference 2, a downward pressing head 9, and a longitudinal moving seat 3 provided with transverse moving seats 4 symmetrically left and right, the downward pressing head 9 is arranged above the base 1, the transverse moving seats 4 are provided with longitudinal limiting references 5, automatic drilling mechanisms 6, side pushing assemblies 7, and self-locking stability increasing assemblies 8, the corresponding longitudinal limiting references 5, automatic drilling mechanisms 6, side pushing assemblies 7, and self-locking stability increasing assemblies 8 arranged symmetrically on the transverse moving seats 4 are also symmetric with each other, wherein the base 1 is used to carry and support a workpiece 11 (i.e. a large filter plate) to be processed, the transverse limiting reference 2 is fixedly installed on the base 1 and located at the front side of the workpiece 11, the transverse 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 transverse direction (X-axis), the symmetric transverse moving seats 4 are slidably installed on the longitudinal moving seat 3, the transverse limiting reference 2 is located between the symmetric transverse moving seats 4, the transverse moving seats 4 can synchronously and reversely slide along the transverse direction (X-axis), and the longitudinal moving seat 3 can move along the longitudinal direction (Y-axis) with the transverse limiting reference 2 as the reference. It should be noted that the X-axis is the left-right direction, and the Y-axis is the front-rear direction.

[0023] With the first group of symmetrical holes on the left and right sides of the workpiece 11 and close to the front end as an example, the processing process is described as follows: during the processing, the workpiece 11 is first placed on the base 1 and the front end is abutted against the transverse limiting reference 2 (as shown in Figure 2 ), at this time, the initial position of the workpiece 11 in the transverse direction (X-axis) is determined, and at the same time, according to the longitudinal coordinate value of the first group of symmetrical holes, the longitudinal moving seat 3 is driven to move to the target position along the longitudinal direction (Y-axis) and is locked, since the two automatic drilling mechanisms 6 are symmetrically installed on the longitudinal moving seat 3 through the transverse moving seat 4, the movement of the longitudinal moving seat 3 can synchronously and accurately 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 the 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 the workpiece 11, thus, the automatic calibration of the coordinate positions of the two automatic drilling mechanisms 6 in the longitudinal direction is completed; then the transverse moving seat 4 is synchronously moved, and the longitudinal limiting references 5 on the left and right sides are simultaneously moved close to the side of the workpiece 11 until they are firmly abutted against and clamp the workpiece 11, at this time, the distance between the center of the drilling end of the two automatic drilling mechanisms 6 in the transverse direction (X-axis) relative to the corresponding work side is determined, and this distance is a known design value or a pre-calibrated value, in combination with the aforementioned determined longitudinal coordinate, the accurate 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 group of symmetrical holes is synchronously completed; finally, the workpiece 11 is pressed by the lower pressing head 9, so that the workpiece 11 is stably in the current position state. As shown in Figure 2 , the lower pressing head 9 includes a lifting cylinder, two frames distributed above and below, the frame located on the upper side and the lifting cylinder are fixedly installed on the equipment frame (the equipment frame is prior art), the frame located on the lower side is fixedly connected with the pushing end of the lifting cylinder, and a rectangularly distributed guide column is fixedly installed on the upper end of the frame located on the lower side, the guide column is in sliding connection with the frame located on the upper side; the frame located on the lower side is controlled to move downward to press the workpiece 11 by the lifting cylinder.

[0024] The workpiece 11 clamping and fixing action and the accurate coordinate calibration action of the symmetrical holes to be processed are integrated in the same process, and are seamlessly connected and synchronously completed in a short time, the drilling processing efficiency of the large filter plate is effectively improved, and the longitudinal limiting reference 5 moves synchronously with the transverse moving seat 4, which can effectively avoid the shielding of the hole position to be drilled, and can efficiently meet the drilling requirements of workpieces 11 of different sizes.

[0025] Referring to Figure 2 , Figure 3 , Figure 4 and Figure 6, the side pushing assembly 7 is symmetrically arranged on the corresponding horizontal moving seat 4, and in the process of synchronous relative movement of the horizontal moving seat 4, the side pushing assembly 7 contacts the workpiece 11 before the longitudinal limiting reference 5, and moves forward along the side surface of the workpiece 11 with the continuous movement of the horizontal moving seat 4, and then automatically generates a forward side pushing force to realize the purpose of continuously pressing the front end of the workpiece 11 on the horizontal limiting reference 2, and ensures the accuracy of the front end reference of the workpiece 11; the side pushing assembly 7 comprises a hinged piece 71 which is elastically hinged on the corresponding horizontal moving seat 4 and a contact end 72 which is single-rotatedly installed on the hinged piece 71, and the contact end 72 is a contact roller; in the process of the horizontal moving seat 4 moving to the side surface of the workpiece 11, the contact end 72 contacts the side surface of the workpiece 11 before the longitudinal limiting reference 5, and with the continuous movement of the horizontal moving seat 4, the hinged piece 71 is rotated and accumulates elastic force due to the blockage of the side surface of the workpiece 11, and the contact end 72 moves forward along the side surface of the workpiece 11 in the state of abutting against the side surface of the workpiece 11, at this time, the contact end 72 does not rotate and generates a forward sliding friction force, this friction force is converted into a continuous forward side pushing force acting on the workpiece 11, which ensures that the front end of the workpiece 11 is always tightly attached to the horizontal limiting reference 2, effectively eliminates possible gaps and backward movement, avoids the workpiece 11 from slightly moving backward or vibrating due to the friction force when the longitudinal limiting reference 5 contacts the side surface of the workpiece 11, which affects the close attachment of the workpiece 11 to the horizontal limiting reference 2, effectively avoids the generation of positioning error, and further strengthens the stability and accuracy of the reference; after the drilling process is completed, the horizontal moving seat 4 moves reversely to reset, under the action of the elastic force of the hinged piece 71, the contact end 72 abuts against the side surface of the workpiece 11, and the contact end 72 moves backward along the side surface of the workpiece 11, at this time, under the action of the friction force, the contact end 72 can rotate freely, which greatly reduces the backward friction force applied to the workpiece 11, avoids the risk that the workpiece 11 is dragged backward away from the horizontal limiting reference 2, and maintains the stability of the reference position. Wherein, two groups of side pushing assemblies 7 are arranged on each horizontal moving seat 4, and the two side pushing assemblies 7 are respectively located on the front and rear sides of the automatic drilling mechanism 6, at least one group of side pushing assemblies 7 on the horizontal moving seat 4 is in working state during each drilling process, which avoids the misalignment of a single side pushing assembly 7 and the workpiece 11, and the single side pushing assembly 7 cannot contact the workpiece 11 during the drilling process on the position close to the end of the side surface of the workpiece 11.

[0026] Referring to Figure 4 and Figure 6 , a ratchet and pawl structure 73 is arranged between the contact end 72 and the hinged piece 71, the ratchet and pawl structure 73 enables the contact end 72 to rotate in one direction, as shown in Figure 6 , a plurality of pawls are uniformly arranged on the hinged piece 71 along the circumference of the ratchet.

[0027] Referring to Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6The self-locking stabilizing assembly 8 is symmetrically arranged on the corresponding horizontal moving seat 4 and is connected with the side pushing assembly 7, and when the longitudinal limiting reference 5 abuts against the side surface of the workpiece 11, the self-locking stabilizing assembly 8 automatically increases the friction between the horizontal moving seat 4 and the longitudinal moving seat 3, so as to improve the stability of the position state of the horizontal moving seat 4 when stopping moving, and further improve the stability of the drilling processing, and the reaction force of the self-locking stabilizing assembly 8 can enhance the pressure of the contact end 72 on the workpiece 11. Figure 5 As shown in FIG. 8, the self-locking stabilizing assembly 8 comprises a connecting part 81 in contact with the corresponding hinge part 71 and horizontally movable, and a brake part 82 in wedge-shaped cooperation with the connecting part 81 and vertically movable, when the contact end 72 is in contact with the side surface of the workpiece 11 and moves forward, the hinge part 71 rotates, the rotating hinge part 71 pushes the connecting part 81 to move in the horizontal direction away from the workpiece 11, and the connecting part 81 moves downward through the wedge-shaped cooperation to abut against the longitudinal moving seat 3, on the one hand, the friction between the horizontal moving seat 4 and the longitudinal moving seat 3 is increased, so as to improve the stability of the position state of the horizontal moving seat 4 when stopping moving, and further improve the anti-vibration performance of the overall structure, so as to provide a stable processing environment for the subsequent drilling processing; on the other hand, the reaction force of the above-mentioned friction is transmitted to the contact end 72 through the brake part 82, the connecting part 81 and the hinge part 71, so as to enhance the pressure of the contact end 72 on the workpiece 11, and further ensure that the front end of the workpiece 11 is stably abutted against the horizontal limiting reference 2.

[0028] Referring to Figure 4 and Figure 5 , the connecting part 81 comprises a sliding body 812 provided with a plurality of wedge-shaped blocks 811, the sliding body 812 is horizontally slidably arranged on the corresponding horizontal moving seat 4, and the end of the sliding body 812 close to the workpiece 11 abuts against the hinge part 71, the brake part 82 is a plurality of and uniformly distributed in the horizontal direction, and the brake part 82 is vertically slidably arranged on the horizontal moving seat 4, the brake part 82 corresponds to the wedge-shaped block 811 one by one and is in wedge-shaped cooperation with the corresponding wedge-shaped block 811.

[0029] Referring to Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 7, push cylinder 12 is installed on the longitudinal moving seat 3, the push cylinder 12 corresponds to the horizontal moving seat 4 and drives the corresponding horizontal moving seat 4 to move, and the guiding mechanism (such as a linear guide rail) is combined to increase the stability of the moving process of the horizontal moving seat 4; the automatic drilling mechanism 6 includes a mounting seat 61 and an automatic drilling drill bit 62, the drill bit 62 is a pneumatic drill bit 62, the drill bit 62 is installed on the corresponding horizontal moving seat 4 through the mounting seat 61, and the synchronous assembly 10 is arranged between the symmetric automatic drilling drill bits 62 and the symmetric horizontal moving seats 4; the synchronous assembly 10 is a targeted and reasonable design based on the needs of high-precision symmetric machining, dynamic load balancing, and adaptability of the debris machining environment, and the core of the synchronous assembly 10 is to use the rigid mechanical coupling principle to force synchronization; the synchronous assembly 10 includes a sliding seat 101 and a box body 102, the sliding seat 101 is symmetrically distributed and installed on the corresponding horizontal moving seat 4, the box body 102 is located between the symmetric horizontal moving seats 4, and the gear 103 and the rack 104 are installed in the box body 102, the number of the rack 104 is two and the rack 104 is slidingly installed in the box body 102, and the two racks 104 are simultaneously engaged with the gear 103 and located on both sides of the gear 103, the connecting frame 105 is fixedly connected to the rack 104, and the two connecting frames 105 are slidingly penetrated through the corresponding box body 102 and then fixedly connected to the corresponding sliding seat 101.

[0030] The rack 104, the connecting frame 105, the sliding seat 101 and the gear 103 constitute a closed force flow circulation system, in the system, when any one of the two racks 104 slides, the movement must be transmitted to the other rack 104 without slip through the corresponding gear 103, so that the rack 104 generates a precise displacement which is strictly equal in size and necessarily opposite in direction; this mechanical property fundamentally ensures that the movement time of the two sliding seats 101 fixedly connected with the rack 104 through the connecting frame 105 is kept synchronous and opposite, and then ensures that the symmetric horizontal moving seats 4 move synchronously and oppositely, the symmetric drill bits 62 move synchronously and oppositely, so that the displacement of the symmetric drill bits 62 is always constrained to be mirror image equal in mechanical structure. Compared with the scheme of using two independent control sources, the design of the application avoids the problem of decline in synchronization accuracy caused by different response delays or cumulative errors of independent control sources, ensures the consistency of the processing progress of symmetric holes, facilitates rapid processing of the next group of symmetric holes, and is beneficial to improve the overall machining precision, and then facilitates rapid and efficient processing of multiple groups of symmetric holes.

[0031] Meanwhile, the synchronous assembly 10 also exhibits excellent dynamic load balancing characteristics during the drilling process: if the drilling resistance of one side drill bit 62 increases, the reaction force generated by it will be transmitted to the rack 104 on that side through the traversing seat 4, the sliding seat 101, the connecting frame 105, and then immediately transmitted to the rack 104 on the other side through the corresponding gear 103, so that the load moments on both sides are transmitted and counteracted in real time within the rigid coupling system, effectively avoiding unilateral overload and significantly improving the impact resistance and stability of the overall structure during the machining process, thereby providing a guarantee for high-precision drilling.

[0032] Referring to Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 7 , the sliding seat 101 in the synchronous assembly 10 between the drill bits 62 is rotationally connected to the corresponding drill bit 62 and slidingly connected to the corresponding traversing seat 4, the sliding seat 101 in the synchronous assembly 10 between the traversing seats 4 is fixedly connected to the corresponding traversing seat 4, the box body 102 in the synchronous assembly 10 between the traversing seats 4 is fixedly installed on the longitudinal moving seat 3, and the box body 102 in the synchronous assembly 10 between the drill bits 62 corresponds to the upper end of the box body 102 in the synchronous assembly 10 of the traversing seat 4. The two box bodies 102 can be sealed and communicated with each other and filled with lubricant inside to keep the gear 103 and the rack 104 in a stable meshing state and reduce the friction loss between them. At the same time, the sealing protection of the gear 103 and the rack 104 by the box body 102 can effectively isolate the debris environment generated by drilling and avoid the influence of the debris generated by drilling on the transmission meshing precision and reliability of the gear 103 and the rack 104.

[0033] Referring to Figure 2 , Figure 3 and Figure 4 , the longitudinal limiting reference 5 is a limiting block 52 provided 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, and are also located on the side of the corresponding side pushing assembly 7 close to the drill bit 62. The limiting block 52 is fixedly installed on the corresponding traversing seat 4. The symmetrically distributed limiting blocks 52 form two symmetric limiting points on the front and rear sides of the drill bit 62, which is beneficial to improve the stability of the position state of the workpiece 11 during the machining process, and thus improve the stability of the drilling process.

[0034] Referring to Figures 1 to 7The drilling process of the workpiece 11 (i.e. large filter plate) is as follows: the left side and the right side of the workpiece 11 are drilled simultaneously; first, the workpiece 11 is placed on the base 1 and the front end of the 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 according to the longitudinal coordinate value of the first group of symmetrical holes and is locked, then the transverse moving seat 4 moves synchronously until the longitudinal limiting reference 5 abuts against the corresponding side of the workpiece 11 and clamps and fixes the workpiece 11, then the frame on the lower side is controlled to move downward by the lifting cylinder to press the workpiece 11, and then the automatic drilling mechanism 6 drills synchronously, after drilling, the transverse moving seat 4 moves reversely and resets, the frame on the lower side moves upward by 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 group of symmetrical holes and is locked at the current position, then the transverse moving seat 4 moves again and repeats the foregoing drilling process, and the cycle is repeated until the drilling of all the drainage holes on the left and right sides of the workpiece 11 is completed, after the drilling on the left and right sides is completed, the longitudinal moving seat 3 resets and moves to the initial position, and at the same time, the working surface of the workpiece 11 is switched, so that the foregoing left side or the right side of the workpiece 11 abuts against the transverse limiting reference 2, and then the foregoing entire drilling process is continued.

[0035] In addition, the terms "first", "second", "one", "two" are only used for description purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", "one", "two" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0036] In the embodiments of the present application, unless otherwise specifically specified and limited, the "upper" or "lower" of the first feature to the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the "over", "above" and "on" of the first feature to the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The "under", "below" and "under" of the first feature to the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0037] In the description of the present application, it also needs to be explained that, unless explicitly specified and limited, the terms "set", "connected", "mounted", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, or slidingly connected, or rotatably connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0038] The embodiments of the present specific embodiment are the preferred embodiments of the present application, and are not limited to the protection scope of the present application, so that: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. An automatic clamping mechanism for drilling large filter plates, characterized in that, The utility model relates to a kind of automatic drilling device, including: Base for placing workpiece; Transverse limiting reference for limiting workpiece front end; Symmetrically arranged with transverse moving seat, transverse moving seat is reversely slid synchronously arranged; Longitudinal limiting reference, symmetrically arranged and respectively fixed on corresponding transverse moving seat; Automatic drilling mechanism, symmetrically arranged and respectively installed on corresponding transverse moving seat, and synchronous feed; Side push assembly, symmetrically arranged and including: Inclined and elastically hinged to corresponding transverse moving seat on hinge piece; Contact end is installed on hinge piece in one-way rotation; When transverse moving seat moves to workpiece, contact end contacts the side of workpiece before longitudinal limiting reference, and contact end continues to move along the side of workpiece towards longitudinal limiting reference, while making hinge piece rotate; Self-locking stability assembly, symmetrically arranged and including: With corresponding hinge piece contact and laterally movable linkage; With wedge-shaped cooperation and vertically movable brake piece; When hinge piece rotates, it pushes linkage to move, and linkage drives brake piece to descend and abut against longitudinal moving seat through wedge-shaped cooperation, to increase the friction between transverse moving seat and longitudinal moving seat, and the reaction force of friction enhances the pressure of contact end on workpiece; 2. The automatic clamping mechanism for large filter plate drilling according to claim 1, characterized in that: Lowering head, after clamping and fixing workpiece on longitudinal limiting reference, it moves down and presses workpiece.

3. The automatic clamping mechanism for large filter plate drilling according to claim 2, characterized in that: The automatic drilling mechanism includes mounting seat and automatic drilling drill bit, and synchronous assembly is arranged between the symmetric drill bits and the symmetric transverse moving seats.

4. The automatic clamping mechanism for large filter plate drilling according to claim 1, characterized in that: The synchronous assembly includes sliding seat and box, and the sliding seat is symmetrically distributed and installed on the corresponding transverse moving seat.

5. The automatic clamping mechanism for large filter plate drilling according to claim 2, characterized in that: The box is located between the symmetric transverse moving seats, and the gear and the rack are installed in the box.

6. The automatic clamping mechanism for large filter plate drilling according to claim 1, characterized in that: The number of racks is two, and the two racks are located on both sides of the gear and meshed with the gear.

7. A large filter plate automatic chucking mechanism for drilling according to claim 5, characterized in that: The connecting frame is fixedly connected to the rack and slidably penetrates through the corresponding box and is then fixedly connected to the corresponding sliding seat. The sliding seat of the synchronous assembly between the drill bits is rotatably connected to the corresponding drill bit and slidably connected to the corresponding transverse moving seat. The contact end is in columnar shape, and a ratchet and pawl structure is arranged between the contact end and the hinge piece. The ratchet and pawl structure enables the contact end to rotate in one direction. The longitudinal limiting reference includes a limiting block provided with a reference surface. The reference surface is symmetrically distributed and located on both sides of the corresponding drill bit. The limiting block is fixedly installed on the corresponding transverse moving seat. The linkage includes a sliding body provided with a plurality of wedge-shaped blocks. The number of brake pieces is several, and the brake pieces are uniformly distributed in the transverse direction. The brake piece corresponds to the corresponding wedge-shaped block and is wedge-shaped cooperated with the corresponding wedge-shaped block. The number of side push assemblies on the transverse moving seat is at least two, and the limiting block is located between the corresponding side push assembly and the drill bit.

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