Brazing tool for composite dicing cutter

Abstract

The utility model relates to the technical field of brazing, and discloses a composite dicing cutter brazing tool which comprises a graphite supporting plate, two installation grooves are formed in the upper end of the graphite supporting plate, two fixing blocks are arranged in the installation grooves, and the two fixing blocks are oppositely arranged in the installation grooves. Vacuum brazing is carried out by closing a brazing furnace, then after brazing of the composite dicing cutter is completed, the composite dicing cutter is cooled, and after cooling is completed, a worker sequentially disassembles a balancing weight, a graphite pressing block, a fixing block, the composite dicing cutter subjected to brazing and a graphite supporting plate to take down the composite dicing cutter subjected to brazing. The tool can be reused by cleaning impurities on the tool by a worker, and meanwhile, a positioning hook can be omitted as the whole graphite block is adopted in the brazing work, so that the working efficiency is greatly improved, the production cost of an enterprise is also saved, and the production efficiency is improved. And meanwhile, the structure is relatively simple, so that a worker can disassemble and assemble the device more conveniently.

Description

TECHNICAL FIELD

[0001] The utility model relates to brazing technical field, concretely is a kind of composite pelletizing cutter brazing tool. BACKGROUND

[0002] High polymer melt extrudes from mould hole, enters the closed water cavity of underwater pelletizer and is cut and granulated, and the polymer after cutting is brought into centrifugal dryer by cooling water flow, dehydration drying is carried out, after the above process, the granulation process of plastic production is completed;Wherein composite pelletizing cutter is an important component of this granulation process, and the quality of cutting tool plays a crucial role in granulation forming, it is composed of two parts of cutter body and cutting edge, and is welded together by vacuum brazing.

[0003] In order to ensure the welding quality, the positioning hook is usually spot-welded on the cutter body by argon arc welding before brazing, mainly plays the role of limiting, reinforcing and preventing the cutting blade from falling off due to the vibration generated in the closing moment of brazing furnace, and the manufacturing of positioning hook is one of the important processing steps in brazing preparation, which not only has large processing amount and long time consumption, but also has stress due to improper welding. UTILITY MODEL CONTENT

[0004] In view of the deficiencies of prior art, the utility model provides a kind of composite pelletizing cutter brazing tool to solve the problems mentioned in the above background art, that is, in order to ensure the welding quality, the positioning hook is usually spot-welded on the cutter body by argon arc welding before brazing, mainly plays the role of limiting, reinforcing and preventing the cutting blade from falling off due to the vibration generated in the closing moment of brazing furnace, and the manufacturing of positioning hook is one of the important processing steps in brazing preparation, which not only has large processing amount and long time consumption, but also has stress due to improper welding.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of composite pelletizing cutter brazing tool, including graphite support plate, the upper end position of graphite support plate is equipped with two installation grooves, two fixed blocks are arranged in the installation groove, two The fixed blocks are oppositely arranged in the installation groove, a placing groove is formed in the two fixed blocks, a limit block is fixedly installed at the rear end of the fixed block, a cutter body is arranged in the placing groove, a first welding material is arranged in the placing groove, a second welding material is arranged in the placing groove, and the shape of the placing groove in the fixed block is consistent with the shape of the cutter body.

[0006] The graphite supporting plate is placed on the bottom plate of the brazing furnace, then the two fixing blocks are installed on the graphite supporting plate through the installation groove installed on the graphite supporting plate, then the worker removes the oxides on the first welding material and the second welding material, and then the first welding material, the second welding material and the cutter body are sequentially placed in the placing grooves in the fixing blocks, then the graphite pressing block is placed on the fixing blocks, then the counterweight block is placed on the protruding blocks on the graphite pressing block, and then the worker closes the brazing furnace to perform vacuum brazing.

[0007] Preferably, the graphite pressing block is arranged at the upper end of the fixing block, and two positioning grooves are arranged at the bottom of the graphite pressing block and in contact with the end points of the fixing block.

[0008] The two fixing blocks in the installation groove are limited by the two positioning grooves at the bottom of the graphite pressing block, and the installation groove can also avoid uneven stress caused by the contact between the graphite pressing block and the blade sharp corner, so that the composite pelletizing cutter can be kept stable during brazing.

[0009] Preferably, two protruding blocks are fixedly installed at the top end of the graphite pressing block, the two protruding blocks are oppositely arranged on the graphite pressing block, a counterweight block is arranged on the graphite pressing block, and the counterweight block is located at the upper end of the two protruding blocks.

[0010] The graphite pressing block and the protruding block are integrally made, so the integrity of the graphite pressing block is improved, and the counterweight block on the graphite pressing block can be pressed on the graphite pressing block to keep the pelletizing cutter stable during brazing.

[0011] Preferably, the graphite supporting plate, the graphite pressing block and the protruding block are made of high-purity graphite.

[0012] The graphite supporting plate, the graphite pressing block and the protruding block are made of high-purity graphite, so they have the advantages of easy precision machining, high temperature resistance, corrosion resistance, oxidation resistance, good thermal shock resistance and small thermal expansion coefficient, thereby improving the service life of the composite pelletizing cutter brazing tool.

[0013] Preferably, the graphite pressing block and the protruding block are integrally made, so the integrity of the graphite pressing block is good.

[0014] The graphite pressing block and the protruding block are integrally made, so the integrity of the graphite pressing block is improved, and the counterweight block can be supported.

[0015] Compared with the prior art, the utility model has the advantages of:

[0016] 1、 this composite pelletizing cutter brazing frock, through the brazing furnace is combined to carry out vacuum brazing, after the composite pelletizing cutter brazing is completed, first cooling is carried out, when cooling is completed, the staff removes the counterweight, graphite pressure block, fixed block and the graphite supporting plate of brazing completed composite pelletizing cutter in proper order to take down, then the staff cleans the impurities on frock to make frock reusable, the whole graphite block is cancelled positioning hook for brazing work, not only greatly improve the work efficiency, save the production cost of enterprise, and the structure is also relatively simple, more convenient for staff to disassemble and install.

[0017] 2、 this composite pelletizing cutter brazing frock, the graphite pressure block and the convex block are integrally made, so that the integrity of the graphite pressure block can be improved, the counterweight on the graphite pressure block can be pressed on the graphite pressure block, so that the pelletizing cutter can be kept stable during brazing, and the graphite supporting plate, the graphite pressure block and the convex block are made of high-purity graphite, so they have the advantages of easy precision machining, high temperature resistance, corrosion resistance, oxidation resistance, good thermal shock resistance and small thermal expansion coefficient, so that the service life of the composite pelletizing cutter brazing frock can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a three-dimensional structure schematic view of the utility model composite pelletizing cutter brazing frock;

[0019] Figure 2 It is a front view structure schematic view of the utility model composite pelletizing cutter brazing frock;

[0020] Figure 3 It is a schematic view of the utility model composite pelletizing cutter brazing frock explosion;

[0021] Figure 4 It is a schematic view of the utility model fixed block and its related structure.

[0022] In the drawing: 1, graphite supporting plate;2, mounting groove;3, fixed block;4, placing groove;5, limiting block;6, cutter body;7, first welding material;8, second welding material;9, graphite pressure block;10, positioning groove;11, convex block;12, counterweight. DETAILED DESCRIPTION

[0023] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0024] Embodiment 1

[0025] Please refer to Figs. 1-4, a composite pelletizing cutter brazing tool, the graphite backing plate 1 upper end position opening has two installation groove 2, the installation groove 2 in the setting has two fixed block 3, two fixed block 3 all present in the installation groove 2 in the opposite setting, two fixed block 3 in all opening has the placement slot 4, the fixed block 3 rear end position fixed installation has the limit block 5, the placement slot 4 in the setting has the cutter body 6, the placement slot 4 in the setting has the first welding material 7, the placement slot 4 in the setting has the second welding material 8, the fixed block 3 in the placement slot 4 shape and the shape of cutter body 6 coincide, the fixed block 3 upper end setting has graphite pressure block 9, the graphite pressure block 9 bottom position opening has two positioning slot 10, two positioning slot 10 in all with the fixed block 3 end point place contact, the graphite pressure block 9 top end fixed installation has two convex block 11, two convex block 11 all present in the graphite pressure block 9 on the opposite setting, the graphite pressure block 9 setting has counterweight 12, the counterweight 12 is located in two convex block 11 upper end.

[0026] Working principle: when the workers need to work on the composite pelletizing knife brazing, the workers first put the graphite support plate 1 on the bottom plate of the brazing furnace, then the workers can better install two fixed blocks 3 on the graphite support plate 1 through the installation groove 2 installed on the graphite support plate 1, then when the graphite support plate 1 is installed in the fixed block 3, the workers remove the oxides on the first welding material 7 and the second welding material 8, then put the first welding material 7, the second welding material 8 and the knife body 6 into the placing groove 4 in the fixed block 3 in turn, when the knife body 6 is placed, the workers put the graphite pressing block 9 on the fixed block 3, then put the counterweight 12 on the protruding block 11 on the graphite pressing block 9, then the workers close the brazing furnace to carry out vacuum brazing, then when the composite pelletizing knife brazing is completed, first cool it down, when the cooling is completed, the workers remove the counterweight 12, graphite pressing block 9, fixed block 3 and brazed composite pelletizing knife and graphite support plate 1 in turn to take down, when the composite pelletizing knife is taken down, the workers check the appearance of the composite pelletizing knife to check whether there is a defect, then the workers clean the impurities on the tooling so that the tooling can be reused, at the same time, the whole graphite block used for brazing work can cancel the positioning hook, which not only greatly improves the work efficiency, but also saves the production cost of the enterprise, and the structure is relatively simple, which is more convenient for workers to disassemble and install.

[0027] Example 2:

[0028] Please refer to Figs. 1-4, a composite pelletizing knife brazing tool, the upper end of the fixed block 3 is provided with a graphite pressing block 9, the bottom of the graphite pressing block 9 is provided with two positioning grooves 10, the two positioning grooves 10 are in contact with the end point of the fixed block 3, the materials of the graphite support plate 1, graphite pressing block 9 and protruding block 11 are high-purity graphite, the graphite pressing block 9 and protruding block 11 are made of one piece, so the integrity of the graphite pressing block 9 is good.

[0029] Working principle: the two positioning grooves 10 at the bottom of the graphite block 9 can better limit the two fixed blocks 3 in the mounting groove 2, and the mounting groove 2 can also better avoid the uneven stress caused by the contact between the graphite block 9 and the blade sharp corner, so as to keep the composite pelletizing cutter stable during brazing, then the graphite block 9 and the convex block 11 are integrally made, so the integrity of the graphite block 9 can be better improved, then the counterweight 12 on the graphite block 9 can be better pressed on the graphite block 9, so that the pelletizing cutter can be kept stable during brazing, and the materials used for the graphite supporting plate 1, the graphite block 9 and the convex block 11 are all made of high-purity graphite, so they have the advantages of easy precision machining, high temperature resistance, corrosion resistance, oxidation resistance, good thermal shock resistance and small thermal expansion coefficient, so the service life of the composite pelletizing cutter brazing tool can be better improved.

[0030] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A composite pelletizing knife brazing tooling comprising a graphite backing plate (1), characterized in that: Two installation grooves (2) are arranged at the upper end position of the graphite supporting plate (1), two fixed blocks (3) are arranged in the installation grooves (2), the two fixed blocks (3) are oppositely arranged in the installation grooves (2), a placing groove (4) is arranged in each of the two fixed blocks (3), a limiting block (5) is fixedly arranged at the rear end of the fixed block (3), a cutter body (6) is arranged in the placing groove (4), a first welding material (7) is arranged in the placing groove (4), a second welding material (8) is arranged in the placing groove (4), and the shape of the placing groove (4) and the shape of the cutter body (6) are matched.

2. The brazing tooling for a compound dicer according to claim 1, wherein: A graphite pressing block (9) is arranged at the upper end of the fixed block (3), two positioning grooves (10) are arranged at the bottom position of the graphite pressing block (9), and the two positioning grooves (10) are in contact with the end points of the fixed block (3).

3. The brazing tooling for a compound dicer according to claim 2, wherein: Two protruding blocks (11) are fixedly arranged at the top end of the graphite pressing block (9), the two protruding blocks (11) are oppositely arranged on the graphite pressing block (9), a counterweight block (12) is arranged on the graphite pressing block (9), and the counterweight block (12) is located at the upper end of the two protruding blocks (11).

4. The brazing tooling for a compound dicer according to claim 1, wherein: The graphite supporting plate (1), the graphite pressing block (9) and the protruding block (11) are all made of high-purity graphite.

5. The brazing tooling for a compound dicer according to claim 2, wherein: The graphite pressing block (9) and the protruding block (11) are integrally made, so that the integrity of the graphite pressing block (9) is good.

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