A tooling fixture and processing equipment for silicon carbide DPF

Abstract

The present invention discloses a fixture and processing equipment for silicon carbide DPF, belonging to the field of workpiece clamping devices or positioning devices. In the fixture, a mold frame is provided with a plurality of feeding holes, a feeding trough is formed between the mold frame and the support seat, and a locking device and a floating support block are provided in the feeding trough. During use, multiple silicon carbide DPF blanks are placed in each feeding hole and fixed with a locking device, which facilitates the subsequent processing of multiple silicon carbide DPF blanks simultaneously, thereby improving production efficiency. The mold frame and support seat can effectively protect the outer wall of the silicon carbide DPF blank, eliminating the need to tape the outer wall, and can prevent the blank from deformation, contamination of the outer wall by plugging mud, and damage to the surface when removing the tape. The floating support block makes it suitable for silicon carbide DPF blanks of different lengths. In addition, a feeding trough is formed at the extension of each feeding hole using a partition assembly, which can better limit and protect each silicon carbide DPF blank individually, thereby improving the deformation problem of the silicon carbide DPF blank during the extrusion and drying processes.

Description

Technical Field

[0001] The invention belongs to the field of workpiece clamping devices or positioning devices, and in particular relates to a tooling fixture and processing equipment for silicon carbide DPF. Background Art

[0002] At present, the production of silicon carbide DPF (full name: Diesel Particulate Filter) first uses a single strip of silicon carbide honeycomb ceramic blank. First, tape is applied to the two end faces and the outer wall. Then, the end face is punched with tape, the holes are blocked with mud, the mud is solidified, and then the tape is removed. This production method has the following problems: (1) The production efficiency is low because one silicon carbide DPF blank is processed at a time. If mass production is carried out, a large amount of manpower and management costs are required. (2) The tape must be adhered tightly to the end face to prevent the mud from entering the adjacent holes during extrusion, and it must also protect the outer wall of the silicon carbide honeycomb ceramic from being contaminated by the mud used for blocking the holes when the mud is extruded. The requirements for applying the tape are high, the operation is difficult, and the product quality is easily affected by improper application of the tape. (3) In addition, when the mud enters the hole during plugging, the moisture is absorbed by the hole wall, causing the strength of the silicon carbide DPF blank near the end face to decrease. Therefore, when the tape is torn off, the surface of the fragile outer wall is stuck to the tape and broken, causing product damage. Currently, this type of damage rate exceeds 30%, affecting production efficiency. Summary of the Invention

[0003] The present invention discloses a tooling fixture and processing equipment for silicon carbide DPF, aiming to solve the above-mentioned problems existing in the prior art.

[0004] The present invention adopts the following technical solutions:

[0005] A tooling fixture for silicon carbide DPF includes a support base, a mold frame and a locking device. The mold frame is arranged on the support base, and the mold frame is provided with a plurality of placement holes for placing silicon carbide DPF blanks. The support base forms a placement trough at the extension of the placement holes. The support base is equipped with a locking device for fixing the silicon carbide DPF blank in the placement trough.

[0006] Furthermore, the material placement hole of the mold frame is used to place the end of the silicon carbide DPF blank.

[0007] Furthermore, at least one supporting block for resisting the silicon carbide DPF blank is provided at one end of the material trough opposite to the mold frame.

[0008] Furthermore, in order to be applicable to silicon carbide DPF blanks of different sizes, the support block can be elastically floated in the feeding trough in the extending direction of the feeding hole.

[0009] Furthermore, the support seat includes a tray, a support frame and a partition assembly, and the mold frame is mounted on the tray through the support frame; the partition assembly is arranged between the mold frame and the support frame to form a number of material loading troughs corresponding to the material loading holes.

[0010] By utilizing the partition assembly to form a feeding trough below each feeding hole, each silicon carbide DPF blank can be better individually restricted and protected, thereby improving the deformation problem of the silicon carbide DPF blank during the extrusion and drying process.

[0011] In addition, the size of the material placement hole should be larger than that of the silicon carbide DPF blank to increase the compatibility of the equipment with slightly bent workpieces and the ease of picking up and placing the workpieces.

[0012] Furthermore, the material loading holes of the above-mentioned mold frame are divided into two rows, front and rear, and each row contains a number of material loading holes. The above-mentioned support frame includes two support plates symmetrically arranged on the above-mentioned pallet, and the left and right ends of the mold frame are respectively connected to the upper ends of the two above-mentioned support plates; the above-mentioned partition assembly includes a main partition and at least one secondary partition, and the two above-mentioned support plates are provided with the above-mentioned main partition between the front and rear rows of material loading holes; the upper end of the main partition is provided with the above-mentioned secondary partition between the two adjacent above-mentioned material loading holes in the same row.

[0013] Furthermore, the mold frame has six material placement holes, which are divided into two rows, front and back, with three material placement holes in each row.

[0014] Furthermore, the locking device includes a clamping plate, and the two clamping plates can be arranged on the support seat to be opened and closed toward the material trough.

[0015] Furthermore, the locking device also includes a movable connection mechanism, and the two ends of the two splints can be arranged between the two support plates through the movable connection mechanism, and the two splints are respectively located on the front and rear sides of the main partition; the movable connection mechanism includes a slide rail, a slider, a first connecting rod, a connecting block and a driving assembly, the slide rail is fixed to the support plate and is equipped with the two sliders, the two ends of the connecting block are respectively hinged to the two sliders through the first connecting rod; the connecting block is equipped with the driving assembly for moving the connecting block up and down; the two sliders are respectively connected to the two splints.

[0016] At this time, when the feeding holes are designed with two rows of front and back rows, the main partition and the two clamps cooperate with each other to actually form two clamps distributed front and back, which can increase the number of products processed in a single time and ensure the locking strength of the silicon carbide DPF blank.

[0017] Furthermore, the above-mentioned driving assembly includes a push rod, a second connecting rod and a handle. The above-mentioned push rod can be moved up and down on the above-mentioned support plate, and the above-mentioned handle can be rotated up and down on the support plate; the above-mentioned handle is hinged to the above-mentioned push rod through the second connecting rod, which is used to move the push rod up and down, and the push rod is connected to the above-mentioned connecting block.

[0018] A processing device for silicon carbide DPF comprises a puncher, a pore plugging machine, a dryer, a conveyor, and at least one fixture having a structure as described above, wherein the puncher, pore plugging machine, and dryer are connected in sequence via a conveyor, and the conveyor is equipped with at least one fixture, which is used to allow the fixture to stop at the puncher, pore plugging machine, and dryer in sequence.

[0019] From the above description of the structure of the present invention, it can be seen that the present invention has the following advantages:

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] First, the fixture disclosed in the present invention features a mold frame and a locking device mounted on a support base. The mold frame is equipped with a plurality of feeding holes. The mold frame and the support base form feeding troughs extending from the feeding holes. The support base is equipped with a locking device within the feeding troughs. During use, multiple silicon carbide DPF blanks are placed into each feeding hole and secured with the locking device. This facilitates simultaneous punching, plugging, and drying of the blanks, improving production efficiency. Furthermore, the mold frame and feeding trough protect the outer walls of the silicon carbide DPF blanks.

[0022] Secondly, in the fixture disclosed herein, the mold frame's placement hole is used to place the end of the silicon carbide DPF blank. One end of the silicon carbide DPF blank is aligned as flush as possible with the mold frame. A single piece of tape is then applied to the end faces of the silicon carbide DPF blank and the mold frame for protection. The mold frame extends the tape's protective area beyond the end face of the silicon carbide DPF blank, making it difficult for mud to contaminate the outer wall of the silicon carbide DPF blank during hole plugging. This eliminates the need for additional tape protection on the outer wall, preventing problems such as damage to the outer wall during tape removal.

[0023] Third, in the fixture disclosed herein, several support blocks are elastically floatable in the direction of the loading holes and are arranged on the support base in a one-to-one correspondence with the loading holes. With the design of the locking device and the several floating support blocks, when the silicon carbide DPF blank is loaded into the fixture using external pressure, the end faces of silicon carbide DPF blanks of different lengths can be aligned flush with the mold frame. This makes the fixture not only suitable for silicon carbide DPF blanks of different lengths, but also allows for mixed loading of silicon carbide DPF blanks of different lengths. This shows that the fixture of the present invention is flexible and highly adaptable.

[0024] Fourthly, the fixture disclosed herein comprises a support base comprising a tray, a support frame, a partition assembly, and a mold frame. The mold frame is mounted on the tray via a support frame, and the partition assembly is positioned between the mold frame and the support frame, forming a plurality of feeding slots corresponding to the feeding holes. The partition assembly forms feeding slots extending from the feeding holes, thereby better confining and protecting each silicon carbide DPF billet, thereby reducing deformation during the extrusion and drying processes.

[0025] Fifth, in the fixture disclosed in the present invention, the material placement holes are designed in two rows, front and back, and the main partition and two clamps cooperate with each other to actually form two fixtures distributed front and back, which can increase the number of products processed in a single time and ensure the reliability of clamping the silicon carbide DPF blank. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the three-dimensional structure of the fixture in the present invention.

[0027] Figure 2 This is a schematic diagram of the disassembly of the fixture in the present invention.

[0028] Figure 3 This is a schematic diagram of the disassembly of the movable connection mechanism in the fixture of the present invention. Figure 1 .

[0029] Figure 4 This is a schematic diagram of the disassembly of the movable connection mechanism in the fixture of the present invention. Figure 2 .

[0030] Figure 5 This is a schematic diagram of the state of the fixture when loading the silicon carbide DPF blank in the present invention.

[0031] Figure 6 It is a schematic diagram of the three-dimensional structure of the processing equipment in the present invention.

[0032] Explanation of reference numerals: support base 1, tray 11, handle 111, anti-collision block 112, support bar 113, support frame 12, support plate 121, connecting piece 122, partition assembly 13, main partition 131, auxiliary partition 132, mold frame 2, material placement hole 20, locking device 3, clamping plate 31, movable connection mechanism 32, hinge 33, drive assembly 320, slide rail 321, slider 3 22. First component-3221, second component-3222, first connecting rod-323, connecting block-324, fixing seat-325, push rod-326, second connecting rod-327, handle-328, support block-4, fixing block-41, floating rod-42, compression spring-43, material trough-5, puncher-6, plugging machine-7, dryer-8, conveyor-9, fixture-10, silicon carbide DPF blank-a. DETAILED DESCRIPTION

[0033] Specific embodiments of the present invention will be described below with reference to the accompanying drawings.

[0034] like Figures 1 to 5 As shown, a fixture for a silicon carbide DPF is primarily comprised of a support base 1, a mold frame 2, a locking device 3, and a support block 4. The mold frame 2 is provided with a plurality of placement holes 20 for placing silicon carbide DPF blanks a. The mold frame 2 is mounted on the support base 1. The support base 1 has a placement trough 5 formed as an extension of the placement holes 20. The placement trough 5 is equipped with the locking device 3 and support block 4 for securing the silicon carbide DPF blanks a.

[0035] like Figures 1 to 5 As shown, the mold frame 2 is provided with six placement holes 20 arranged in two front and rear rows with three holes in each row for placing silicon carbide DPF blanks a, but the number and arrangement of the placement holes 20 are not limited thereto.

[0036] like Figures 1 to 5 As shown, the support base 1 mainly includes a tray 11, a support frame 12, and a partition assembly 13. The support frame 12 includes two support plates 121. The lower ends of the two support plates 121 are vertically fixed to the upper end surface of the tray 11 through connecting members 122 and bolts distributed parallel to each other, forming a support frame 12 for mounting the mold frame 2, locking device 3, and partition assembly 13.

[0037] like Figures 1 to 5 As shown, both ends of the mold frame 2 are connected to the two support plates 121 by bolts or the like, and the mold frame 2 is mounted on the upper end of the support frame 12 with the material placement hole 20 facing downward.

[0038] like Figures 1 to 5 As shown, the partition assembly 13 is arranged between the mold frame 2 and the support frame to form six material placement grooves 5 corresponding to the material placement holes 20 one by one.

[0039] More specifically, the partition assembly 13 includes but is not limited to a main partition 131 and two auxiliary partitions 132. The left and right ends of the main partition 131 are respectively connected to the two support plates 121 by screws or the like, so that the main partition 131 is vertically arranged between the two support plates 121 to form an I-shape. The lower ends of the two auxiliary partitions 132 are vertically and spaced apart from each other and plugged into the upper end of the main partition 131, and the upper ends of the two auxiliary partitions 132 are flush with the upper ends of the main partition 131. In addition, the upper end of the main partition 131 is connected to the lower end surface of the mold frame 2 by screws or the like, so that the main partition 131 is located between the front and rear rows of material loading holes 20. The upper ends of the two auxiliary partitions 132 are connected to the lower end surface of the mold frame 2 by plugging, so that the auxiliary partition 132 is located between two adjacent material loading holes 20 in the same row.

[0040] As preferred, the upper end surface of the tray 11 is also provided with a handle 111 for easy removal. Anti-collision blocks 112 are installed on the left and right sides of the tray 11. The lower end surface of the tray 11 is provided with a support bar 113 for cooperating with the conveyor.

[0041] In addition, the size of the material placement hole 20 should be larger than the size of the silicon carbide DPF blank a to increase the compatibility of the equipment with slightly bent workpieces and the ease of taking and placing the workpieces.

[0042] like Figures 1 to 5 As shown, at least one supporting block 4 for resisting the silicon carbide DPF blank a is provided at one end of the material troughs 5 opposite to the mold frame 2 .

[0043] Preferably, to adapt the fixture to various sizes of silicon carbide DPF blanks a, each feeding trough 5 is provided with a support block 4 that is elastically floating in the direction of the feeding hole. A specific embodiment of this elastic floating design includes an L-shaped fixing block 41 detachably screwed to the main partition 131 directly below each feeding hole 20. The mounting height of the fixing block 41 is adjustable as needed. A floating rod 42 is inserted through the fixing block 41 for vertical movement. The support block 4 is fixedly mounted to the upper end of the floating rod 42. The floating rod 42 is also equipped with a compression spring 43 at each end, which respectively supports the support block 4 and the fixing block 41.

[0044] Preferably, the upper end surface of the support block 4 includes but is not limited to a rubber layer (not shown in the figure) having a buffering and protective effect.

[0045] like Figures 1 to 5 As shown, the support base 1 is equipped with a locking device 3 for fixing the silicon carbide DPF blank a in the material trough 5. The locking device 3 mainly includes two clamping plates 31 and a movable connection mechanism 32. The two clamping plates 31 can be arranged on the support base 1 to open and close toward the material trough 5 through the movable connection mechanism 32.

[0046] Specifically, the two splints 31 are respectively located on the front and rear sides of the main partition 131. As a specific embodiment of the movable connection mechanism 32: it mainly includes a slide rail 321, a slider 322, a first connecting rod 323, a connecting block 324 and a driving assembly 320. The slide rail 311 is connected to the support plate 121 by means of screws or the like, and the slide rail 311 is equipped with two sliders 322 that can move along the slide rail 311. A first connecting rod 323 is hinged at each end of the connecting block 324, and the two first connecting rods 323 are respectively hinged to the two sliders 322. The connecting block 324 is equipped with a driving assembly 320 for moving the connecting block 324 up and down, and the two sliders 322 are respectively connected to the two splints 31. When the connecting block 324 moves upward, the two sliders 322 move closer to each other, so that the two splints 31 are clamped together.

[0047] Preferably, the slider 322 includes a first component 3221 and a second component 3222 detachably connected to each other by screws. The first component 3221 is slidably connected to the slide rail 311; the second component 3222 is hinged to the first connecting rod 323 and connected to the end of the clamping plate 31 via a hinge 33.

[0048] Specifically, the drive assembly 320 mainly includes a fixed base 325, a push rod 326, a second connecting rod 327, and a handle 328. The fixed base 325 is fixedly mounted on the support plate 121. The push rod 326 is disposed in the fixed base 325 so as to be movable up and down. The upper end of the push rod 326 is connected to the connecting block 324, and the lower end of the push rod 326 is hinged to the upper end of the second connecting rod 327. The lower end of the second connecting rod 327 is hinged to the upper end of the handle 328. The middle portion of the handle 328 is hinged to the fixed base 325. When the lower end of the handle 328 rotates downward, the push rod 326 moves upward, and when the lower end of the handle 328 rotates upward, the push rod 326 moves downward, thereby causing the connecting block 324 to move up and down. However, the specific embodiment of the drive assembly 320 is not limited to the above. If necessary, a drive device such as a cylinder or an electric telescopic rod can be used instead of the drive assembly 320 to automate the locking device 3.

[0049] Preferably, the clamping surface of the clamping plate 31 includes but is not limited to a rubber layer (not shown in the figure) having a buffering and protective effect.

[0050] like Figures 1 to 5 As shown, in this embodiment, the material placement holes 20 of the fixture are designed in two rows, front and back, and the main partition 131 and the two clamps 31 cooperate with each other to actually form two fixtures distributed front and back, which can increase the number of products processed in a single time and ensure the locking strength of the silicon carbide DPF blank a.

[0051] In the present invention, the fixture is used in the following manner: first, six silicon carbide DPF blanks a are fed into the respective feeding holes 20 from top to bottom until the lower ends of the silicon carbide DPF blanks a come into contact with the support blocks 4. At this time, the upper ends of the silicon carbide DPF blanks a should be higher than the upper end surface of the mold frame 2; then, a pressure plate (not shown) of an external device is used to apply pressure to the upper end surface of the silicon carbide DPF blanks a, and the floating support blocks 4 are used to make the upper ends of the silicon carbide DPF blanks a flush with the upper end surface of the mold frame 2; then, by rotating the two lower handles 3 28, bring the two clamping plates 31 of the locking device 3 closer to each other, and fix the six silicon carbide DPF blanks a with the cooperation of the main partition 131; remove the above-mentioned pressing plate, and stick a whole piece of tape on the six silicon carbide DPF blanks a and the upper end surface of the mold frame 2; after the end surfaces of the six silicon carbide DPF blanks a are punched with tape, the holes are blocked with mud, and the mud is solidified, tear off the protective tape; by rotating the two handles 328, the two clamping plates 31 of the locking device 3 are opened to each other, and finally the six silicon carbide DPF blanks a are taken out.

[0052] like Figures 1 to 6 As shown, in one embodiment, a processing apparatus for silicon carbide DPF is provided, comprising a puncher 6, a pore plugging machine 7, a dryer 8, a conveyor 9, and at least one fixture 10 having the structure described above. The puncher 6, the pore plugging machine 7, and the dryer 8 are sequentially connected by the conveyor 9. The conveyor 9 is equipped with at least one fixture 10, which is used to sequentially stop at the puncher 6, the pore plugging machine 7, and the dryer 8.

[0053] The above is only a specific implementation of the present invention, but the design concept of the present invention is not limited to this. Any non-substantial changes to the present invention using this concept shall be deemed as an infringement of the protection scope of the present invention.

Claims

1. A fixture for silicon carbide DPF, characterized by: The mold frame includes a support base, a mold frame, and a locking device. The mold frame is arranged on the support base, and the mold frame is provided with a plurality of feeding holes for placing silicon carbide DPF blanks. The feeding holes of the mold frame are used to place the ends of the silicon carbide DPF blanks. The support base forms a feeding groove at the extension of the feeding holes. The support base is equipped with a locking device for fixing the silicon carbide DPF blank in the feeding groove. The feeding groove is provided with at least one support block for contacting the silicon carbide DPF blank at one end opposite to the mold frame, and the support block can be elastically floatingly arranged in the feeding groove in the extension direction of the feeding holes. The support base includes a tray, a support frame and a partition assembly. The mold frame is mounted on the tray through the support frame. The partition assembly is arranged between the mold frame and the support frame to form a plurality of material loading slots corresponding to the material loading holes. The feeding holes of the mold frame are divided into two rows, front and back, each row containing a number of feeding holes. The support frame includes two support plates symmetrically arranged on the tray, and the left and right ends of the mold frame are respectively connected to the upper ends of the two support plates; the partition assembly includes a main partition and at least one auxiliary partition, and the two support plates are provided with the main partition between the front and back rows of feeding holes; the upper end of the main partition is provided with the auxiliary partition between the two adjacent feeding holes in the same row; The locking device includes a clamping plate, and the two clamping plates can be arranged on the support seat to be opened and closed toward the material trough.

2. The fixture for silicon carbide DPF according to claim 1, characterized in that: The locking device also includes a movable connection mechanism, and the two ends of the two splints can be arranged between the two support plates through the movable connection mechanism, and the two splints are respectively located on the front and rear sides of the main partition; the movable connection mechanism includes a slide rail, a slider, a first connecting rod, a connecting block and a driving assembly, the slide rail is fixed to the support plate and is equipped with two sliders, and the two ends of the connecting block are respectively hinged to the two sliders through the first connecting rod; the connecting block is equipped with the driving assembly for moving the connecting block up and down; the two sliders are respectively connected to the two splints.

3. The fixture for silicon carbide DPF according to claim 2, characterized in that: The driving assembly includes a push rod, a second connecting rod and a handle. The push rod is movably arranged on the support plate, and the handle is rotatably arranged on the support plate. The handle is hinged to the push rod through the second connecting rod to move the push rod up and down, and the push rod is connected to the connecting block.

4. A processing equipment for silicon carbide DPF, characterized by: It includes a puncher, a hole plugging machine, a dryer, a conveyor and at least one fixture as described in any one of claims 1 to 3, wherein the puncher, hole plugging machine and dryer are connected in sequence through a conveyor, and the conveyor is equipped with at least one fixture, which is used to make the fixture stop at the puncher, hole plugging machine and dryer in sequence.

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