CN210614770U - Spinning tool for manufacturing spinning belt pulley with convex arc-shaped inner wall - Google Patents
Spinning tool for manufacturing spinning belt pulley with convex arc-shaped inner wall Download PDFInfo
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- CN210614770U CN210614770U CN201921627529.0U CN201921627529U CN210614770U CN 210614770 U CN210614770 U CN 210614770U CN 201921627529 U CN201921627529 U CN 201921627529U CN 210614770 U CN210614770 U CN 210614770U
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Abstract
A spinning tool for manufacturing a spinning belt pulley with a convex arc on the inner wall comprises a core mold clamp for pressing a product to be processed, a spinning wheel for forming teeth on the side surface of the product to be processed and a split inner mold; the core mold clamp comprises an upper core mold and a lower core mold; the middle part of the lower end face of the upper core die is provided with a boss matched with the middle concave part of a product to be processed, the middle part of the boss is provided with a positioning pin matched with a central hole of the product to be processed, the lower core die is internally provided with an ejector, the middle part of the upper end face of the ejector is provided with a bulge abutted against the middle concave part of the product to be processed, the middle part of the bulge is provided with a concave groove used for avoiding the head part of the positioning pin, an annular cavity used for accommodating the split inner die is formed between the outer wall of the bulge and the inner wall of the lower core die, and an elastic ejecting; the split internal mold is of a circular structure consisting of a plurality of small split modules, and the outer side wall of the circular ring is provided with an arc-shaped groove. The utility model discloses both concentricity of outer profile of tooth and interior convex circular arc can be guaranteed, production efficiency is submitted simultaneously greatly.
Description
Technical Field
The utility model belongs to the technical field of automobile engine bent axle shock attenuation many wedge band wheel foreign steamer processing, a spinning frock of spinning belt pulley is related to.
Background
At present, in passenger car and small discharge capacity commercial car field, the engine adopts rubber crankshaft shock attenuation belt pulley usually, and the structure of this kind of belt pulley is the triplex: a multi-wedge outer wheel with a convex arc in the middle, a rubber ring and an inner wheel. The multi-wedge outer wheel is usually produced by adopting a machining mode because the inner part of the multi-wedge outer wheel is provided with the convex circular arc, so that the inner convex circular arc is required to be machined by machining the tooth groove of the external belt pulley, the machining process is complex, the efficiency is low, the cost is higher, and multiple clamping is not beneficial to ensuring the concentricity of the product.
Disclosure of Invention
The utility model provides a make spinning frock that inner wall has the spinning belt pulley of convex circular arc, it is big with interior circular arc concentricity to appear easily when solving the spinning that the inner wall has the spinning belt pulley of convex circular arc, and production efficiency is low, defects such as manufacturing cost height.
The technical scheme of the utility model is that: comprises a core mold clamp for pressing a product to be processed, a rotary wheel for forming a tooth part on the side surface of the product to be processed and a split inner mold; the core mold clamp comprises an upper core mold and a lower core mold; the middle part of the lower end face of the upper core die is provided with a boss matched with the middle concave part of a product to be processed, the middle part of the boss is provided with a positioning pin matched with a central hole of the product to be processed, the lower core die is internally provided with an ejector, the middle part of the upper end face of the ejector is provided with a bulge abutted against the middle concave part of the product to be processed, the middle part of the bulge is provided with a concave groove used for avoiding the head part of the positioning pin, an annular cavity used for accommodating the split inner die is formed between the outer wall of the bulge and the inner wall of the lower core die, and an elastic ejecting; the split internal mold is of a circular structure consisting of a plurality of small split modules, and the outer side wall of the circular ring is provided with an arc-shaped groove matched with the convex arc of the inner wall of the product.
The split internal mold is of a circular structure consisting of five small modules, wherein four small modules are of the same structure in pairs.
The elastic ejector piece protrudes out of the surface of the ejector in a free state.
The ejector is of a stepped cylindrical structure with a thick middle part and thin two ends and comprises an upper cylindrical part, a middle cylindrical part and a lower cylindrical part, the upper cylindrical part forms a bulge in the middle of the upper end surface of the ejector, the split inner die of the circular ring structure is sleeved on the upper cylindrical part, and the lower end of the inner wall of the split inner die is abutted against the outer wall of the upper cylindrical part of the ejector; the lower core mold is of a step-shaped cylindrical structure and comprises a large cylinder part matched with the middle cylindrical part of the ejector and a small cylinder part matched with the lower cylindrical part of the ejector; the lower end of the outer wall of the split inner die is abutted against the inner wall of the upper end of the large barrel part of the lower core die.
The elastic ejector is a rubber ring, and the ejector is provided with an annular groove matched and assembled with the rubber ring.
The elastic ejection piece is more than three rubber rods, and the ejector is provided with more than three counter bores matched with the rubber rods.
The center of the ejector is provided with an exhaust through hole.
The rotary wheel comprises a hemming wheel, a flat rotary wheel, a pre-forming wheel and a final forming wheel.
The periphery of the lower end face of the upper core die is provided with a positioning groove matched with the upper surface of a product to be processed, and the periphery of the lower core die is provided with a forming groove matched with the edge of the lower end of the product to be processed.
The utility model discloses a 4 work step spinning shaping, for solving inside spinning belt pulley material returned problem that has convex circular arc, adopt the structure of split centre form, inside not only can be fine supporting belt pulley in the spinning, the profile of tooth of belt pulley and the formation of convex circular arc when guaranteeing the spinning, simultaneously after the spinning is accomplished, can dismantle into the fritter in distinguishing, can separate with the belt pulley to can reach the purpose of volume production. The spinning process for manufacturing the spinning belt pulley with the inner wall provided with the convex circular arc by cold extrusion type skiving-free machining can form the inner convex circular arc simultaneously when the outer tooth form is spun, can be formed by one-time assembly and disassembly, can ensure the concentricity of the outer tooth form and the inner convex circular arc, and greatly submits the production efficiency.
Drawings
FIG. 1 is a processed product of the present invention;
FIG. 2 is a schematic view of a center positioning hole of a product to be processed;
FIG. 3 is a schematic view of a split inner mold;
FIG. 4 is a schematic view showing the operation of a crimping wheel in spin forming;
FIG. 5 is a schematic view showing the operation of a spinning roller;
FIG. 6 is a schematic view of the operation of a preform wheel in spin forming;
FIG. 7 is a schematic view of the operation of the final form wheel in spin forming;
FIG. 8 is a schematic view of the split inner mold and ejector separated after spin forming;
FIG. 9 is a schematic view showing the separation of the product and the split inner mold after the spin forming;
in the figure, 1, a core mould is arranged; 2. a lower core mold; 3. an ejector; 4. a hemming wheel; 5. a flat spinning wheel; 6. pre-forming a wheel; 7. a final forming wheel; 8. a split internal mold; 9. a rubber rod; 10. positioning pins; 11. a copper bar; 21. a central positioning hole; 22. a convex arc; 81. the module comprises a first small module 82, a second small module 83, a third small module 84, a fourth small module 85 and a fifth small module.
Detailed Description
As shown in figure 1, the product is a spinning multi-wedge belt wheel with a convex arc on the inner wall, the diameter of the product is phi 210mm, and the thickness of the material is 4 mm.
As shown in fig. 2, the spinning process is performed with a center positioning hole 21 of the product to be processed.
As shown in fig. 3, the structure diagram of the split inner mold during spinning is divided into 5 segments, i.e., a small module i 81, a small module ii 82, a small module iii 83, a small module iv 84, and a small module iv 85, wherein the small module iv 82 is the same as the small module iii 83, and the small module iv 84 is the same as the small module iv 85, and can be interchanged, so that 5 segments can be rapidly combined into a circular ring shape.
As shown in fig. 4, a core mold jig is mounted on the spinning apparatus, and the core mold jig includes an upper core mold 1, a lower core mold 2, an ejector 3, a split inner mold 8, a rubber rod 9, and a positioning pin 10. The center of the upper core die 1 is provided with a through hole which discharges the air in the die cavity of the core die clamp. The center of the lower core die 2 is provided with a through hole, the through hole is provided with an ejector 3 used for ejecting a product to be processed and the split inner die 8, and the center of the ejector 3 is provided with the through hole which is convenient for discharging the product to be processed and air in the die cavity in spinning. 4 rubber rods 9 are arranged in the ejector 3, the 4 rubber rods protrude out of the ejector 3 in a non-pressure state, a positioning pin 10 is tightly matched in the upper core die 1, and a concave groove is formed in the center of the upper end of the ejector 3 and is avoided from the positioning pin 10. The outer contour of the split inner die 8 is provided with a concave circular arc matched with the convex circular arc 22 of the inner wall of the product, the split inner die is divided into 5 segments which are placed on the ejector 3 in a circular shape, and the hemming wheel 4 is arranged on the first rotary wheel shaft. The outer diameter of the split inner die 8 is matched with the inner diameter size and the outline of a product, and the plane structure size of the upper end face of the split inner die 8 is matched with the bottom plane structure size of the product. A vertical cylinder of a spinning device drives an upper core die 1 to move downwards and move to a certain position, a positioning pin 10 is matched with a central hole of a product to be processed, after the vertical cylinder is pressed downwards to the proper position, a certain pressure is kept, a rubber rod 9 arranged in an ejector 3 is in a compression state, a main shaft of the spinning device rotates to drive a core die clamp and the product to be processed to rotate, the product to be processed is positioned on the upper core die 1 by the positioning pin 10, meanwhile, a hemming wheel 4 arranged on a first rotating wheel shaft keeps a horizontal direction to extrude the product to be processed, the hemming wheel 4 has a working speed of 1.8-2.5mm/s, and the material of the product to be processed is pushed to the position near a lower core die 2.
As shown in fig. 5, a core mold fixture is installed on the spinning apparatus, the core mold fixture includes an upper core mold 1, a lower core mold 2, an ejector 3, a split inner mold 8, a rubber rod 9, a positioning pin 10, and a facing wheel 5 is installed on a second spinning wheel shaft. After the hemming wheel 4 is fed to a set position, the hemming wheel 4 is fast retracted to an initial position, a vertical cylinder of the spinning equipment is used for pressing a product to be processed all the time, a main shaft of the spinning equipment continues to rotate, a facing wheel 5 arranged on a second spinning wheel shaft keeps a horizontal direction to keep a work-in speed for extruding the product to be processed, and the work-in speed of the facing wheel 5 is 1.8-2.0 mm/s. The material of the product to be processed is uniformly pushed and rolled on the split inner die 8, the convex arc required by the product to be processed is tightly matched with the concave arc of the distinguishing inner die 8, and the product to be processed and the split inner die 8 form a whole.
As shown in fig. 6, a core mold jig including an upper core mold 1, a lower core mold 2, an ejector 3, a split inner mold 8, a rubber rod 9, and a positioning pin 10 is installed on a spinning apparatus, and a preforming wheel 6 is installed on a third spinning wheel shaft. After the facing head 5 is fed to a set position, the facing head 5 is fast retracted to an initial position, a vertical cylinder of the spinning equipment is used for pressing a product to be processed all the time, a main shaft of the spinning equipment continues to rotate, a preforming wheel 6 arranged on a third rotating wheel shaft keeps a working speed in a horizontal direction to extrude the product to be processed, the working speed of the preforming wheel 6 is 0.8-1mm/s, and the tooth form of the product to be processed is preliminarily formed in a rotating mode.
As shown in fig. 7, a core mold jig is installed on the spinning apparatus, the core mold jig includes an upper core mold 1, a lower core mold 2, an ejector 3, a split inner mold 8, a rubber rod 9, a positioning pin 10, and a final forming wheel 7 is mounted on a fourth spinning wheel shaft. After the final forming wheel 7 is fed to a set position, the tooth form of a product to be processed is rotated to the size required by a drawing, the working speed of the final forming wheel 7 is 0.6-0.8mm/s, the final forming wheel 7 is fast retracted to an initial position, and the main shaft of the spinning equipment stops rotating.
As shown in fig. 8, the processed product has a convex arc inside, and the split inner mold 8 is tightly wrapped, so that the two forms a whole. The vertical cylinder of the device drives the upper core die 1 and the positioning pin 10 to rapidly return upwards to the initial position, the upper core die 1 does not compress a product to be processed, the split inner die 8 and the ejector 3 are separated by the rubber rod 9 in a compressed state during working, the ejector cylinder of the device upwards pressurizes the ejector 3, and the ejector 3 ejects the processed product and the split inner die 8 together.
As shown in fig. 9, the processed product and the split inner mold 8 are taken out together, the split inner mold 8 is tapped inward one by the copper bar 11 to be separated from the processed product one by one, and then the split inner mold 8 is put into the ejector 3. The arrows in the figure indicate the knocking direction of the copper bar 11.
Claims (9)
1. The utility model provides a make spinning frock that inner wall has spinning belt pulley of convex circular arc which characterized in that: comprises a core mold clamp for pressing a product to be processed, a rotary wheel for forming a tooth part on the side surface of the product to be processed and a split inner mold; the core mold clamp comprises an upper core mold (1) and a lower core mold (2); the middle part of the lower end surface of the upper core die (1) is provided with a boss matched with the middle concave part of a product to be processed, the middle part of the boss is provided with a positioning pin (10) matched with a central hole of the product to be processed, the lower core die (2) is internally provided with an ejector (3), the middle part of the upper end surface of the ejector (3) is provided with a bulge used for abutting against the middle concave part of the product to be processed, the middle part of the bulge is provided with a concave groove used for avoiding the head part of the positioning pin (10), an annular cavity used for accommodating the split inner die (8) is formed between the outer wall of the bulge and the inner wall of the lower core die (2), and the ejector (3) is; the split internal mold (8) is of a circular structure consisting of a plurality of small split modules, and the outer side wall of the circular ring is provided with an arc-shaped groove matched with the convex arc (22) on the inner wall of the product.
2. The spinning tool for manufacturing the spinning belt pulley with the convex circular arc on the inner wall according to claim 1, is characterized in that: the split internal mold (8) is of a circular structure consisting of five small modules, wherein four small modules are of the same structure in pairs.
3. The spinning tool for manufacturing the spinning belt pulley with the convex circular arc on the inner wall according to claim 1, is characterized in that: the upper surface of the elastic ejector piece protrudes out of the surface of the ejector (3) in a free state.
4. The spinning tool for manufacturing the spinning belt pulley with the convex circular arc on the inner wall according to claim 1, is characterized in that: the ejector (3) is of a stepped cylindrical structure with a thick middle part and thin two ends and comprises an upper cylindrical part, a middle cylindrical part and a lower cylindrical part, the upper cylindrical part forms a bulge in the middle of the upper end surface of the ejector (3), a split inner die (8) of a circular ring structure is sleeved on the upper cylindrical part, and the lower end of the inner wall of the split inner die (8) is abutted against the outer wall of the upper cylindrical part of the ejector (3); the lower core mold (2) is of a step-shaped cylindrical structure and comprises a large cylindrical part matched with the middle cylindrical part of the ejector (3) and a small cylindrical part matched with the lower cylindrical part of the ejector (3); the lower end of the outer wall of the split inner die (8) is propped against the inner wall of the upper end of the large cylinder part of the lower core die (2).
5. The spinning tool for manufacturing the spinning belt pulley with the convex circular arc on the inner wall according to claim 1, is characterized in that: the elastic ejection piece is a rubber ring, and the ejector (3) is provided with an annular groove matched and assembled with the rubber ring.
6. The spinning tool for manufacturing the spinning belt pulley with the convex circular arc on the inner wall according to claim 1, is characterized in that: the elastic ejection piece is more than three rubber rods (9), and the ejector (3) is provided with more than three counter bores matched with the rubber rods.
7. The spinning tool for manufacturing the spinning belt pulley with the convex circular arc on the inner wall according to claim 1, is characterized in that: the center of the ejector (3) is provided with an exhaust through hole.
8. The spinning tool for manufacturing the spinning belt pulley with the convex circular arc on the inner wall according to claim 1, is characterized in that: the rotary wheel comprises a hemming wheel (4), a flat rotary wheel (5), a preforming wheel (6) and a final forming wheel (7).
9. The spinning tool for manufacturing the spinning belt pulley with the convex circular arc on the inner wall according to claim 1, is characterized in that: the periphery of the lower end face of the upper core mold (1) is provided with a positioning groove matched with the upper face of a product to be processed, and the periphery of the lower core mold (2) is provided with a forming groove matched with the edge of the lower end of the product to be processed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921627529.0U CN210614770U (en) | 2019-09-27 | 2019-09-27 | Spinning tool for manufacturing spinning belt pulley with convex arc-shaped inner wall |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921627529.0U CN210614770U (en) | 2019-09-27 | 2019-09-27 | Spinning tool for manufacturing spinning belt pulley with convex arc-shaped inner wall |
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| CN210614770U true CN210614770U (en) | 2020-05-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112642931A (en) * | 2020-12-24 | 2021-04-13 | 南通福乐达汽车配件有限公司 | Processing technology of thickened multi-wedge belt pulley |
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2019
- 2019-09-27 CN CN201921627529.0U patent/CN210614770U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112642931A (en) * | 2020-12-24 | 2021-04-13 | 南通福乐达汽车配件有限公司 | Processing technology of thickened multi-wedge belt pulley |
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