CN216096091U - Convenient rim expansion mould of retooling - Google Patents

Abstract

The utility model discloses a rim expanding die convenient to change a die, which comprises an upper die and a lower die, wherein the upper die and the lower die respectively comprise a die assembly and a plurality of groups of expanding assemblies which are uniformly arranged in an annular shape, each expanding assembly comprises a die section and an expanding slide block, the outer side surface of each die section is matched with the inner side surface of a rim in shape, each expanding slide block is fixedly arranged at the inner side of each die section, one side of each side surface, which is mutually connected between each die section of the upper die and each expanding slide block, is provided with a convex hanging platform, the other side of each side surface is provided with an accommodating groove in which the hanging platform can be placed, each die assembly moves towards the expanding slide block and extrudes the expanding slide block, and each expanding slide block drives each die section to expand along the radial direction; the die assembly moves in the direction of deviating from the expansion slide blocks, and each expansion slide block drives the die section to contract along the radial direction. According to the die-changing device, the hanging table and the accommodating groove are arranged between the die flap in the upper die and the expansion sliding block, when the die flap is installed, the hanging table and the accommodating groove can be used for assisting in installation, physical strength is saved, die change is convenient and rapid, and die change efficiency is improved.

Description

Convenient rim expansion mould of retooling

Technical Field

The utility model relates to the technical field of rim manufacturing, in particular to a rim expanding die convenient to change dies.

Background

In the process of manufacturing the rim, the expansion is an essential important process. The expanding process is mainly used for expanding and finishing the diameter and the roundness of the rim workpiece so as to meet the production requirements. This process usually requires the use of expansion dies, and in particular vertical expansion dies of the up-and-down configuration are often used.

But the existing vertical expansion die has some inconveniences in the using process. For example, when installing and replacing the mold halves of the upper mold of the expansion mold, the mold halves need to be lifted, the screws are aligned with the locked hole positions, and then the upper mold is locked and fixed. Lifting before the die section is installed consumes physical power, die changing is laborious, and efficiency is low.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a rim expanding die which saves physical strength and is convenient and quick to change dies.

In order to achieve the purpose, the technical scheme adopted by the utility model is as follows:

a rim expanding die convenient to change dies comprises an upper die and a lower die, wherein the upper die and the lower die respectively comprise a die assembly and a plurality of groups of expanding assemblies which are uniformly arranged in an annular shape, each expanding assembly comprises a die section and an expanding slide block, the shape of the outer side surface of each die section is matched with that of the inner side surface of a rim, each expanding slide block is fixedly arranged on the inner side of each die section, one side of each side surface, connected between each die section of the upper die and each expanding slide block, of each upper die is provided with a convex hanging table, the other side of each side surface is provided with an accommodating groove capable of accommodating the hanging table, each die assembly moves towards the expanding slide block and extrudes the expanding slide block, and each expanding slide block drives each die section to expand along the radial direction; the die assembly moves in the direction of departing from the expansion slide blocks, and each expansion slide block drives the die section to contract along the radial direction.

Preferably, the hanging table and the accommodating groove are both arc-shaped.

Furthermore, the mould halves and the expansion sliding blocks are connected with each other through a locking structure arranged transversely. The locking structure can adopt a common bolt screw hole locking structure, when the locking structure is longitudinally arranged, the die change is more strenuous for holes and locking, the strength of key parts of the expansion sliding block can be weakened, and the risk of fracture of the expansion sliding block is increased. After the locking structure is improved to be transversely arranged, the die change is labor-saving, convenient and rapid, and the risk of expanding the sliding block to be broken is small.

Furthermore, a gasket is arranged between the mold half and the expansion sliding block, and a mounting through hole for the locking structure to pass through is formed in the gasket. The mould lamella can appear wearing and tearing more or less after long-time the use, and this wearing and tearing usually become whole week inhomogeneous to lead to mould lamella circularity, diameter not up to standard, fall the face processing maintenance back with the help of special fixture, lathe to the mould lamella, the external diameter of mould lamella can become to avoid diminishing, for guaranteeing the normal use of expansion mould, need add the gasket and compensate to the mould lamella external diameter. However, the locking structure between the mold half and the expanding slide block is usually arranged longitudinally, the gasket between the mold half and the expanding slide block cannot be added and fixed, and the locked hole positions are not aligned, so that the maintenance amount of the mold half is limited, and the service life is short. To this, improve locking structure for horizontal setting, the gasket that the installation through-hole was seted up in the cooperation then can solve above-mentioned problem, effectively prolongs the life of mould lamella, reduces the cost input of mould.

Furthermore, the thicknesses of all the gaskets in the upper die or the lower die are equal.

Further, the die assembly comprises a template, a cone and a disc chuck, the upper end and the lower end of the cone are larger and smaller, the smaller end faces the center of the die, the larger end is fixed with the template, the disc chuck is sleeved on the outer side of the cone and is movably connected with the template vertically, the expansion sliding block is uniformly arranged on the outer side of the cone along the circumferential direction of the disc chuck and is radially connected with the disc chuck in a sliding manner along the disc chuck, and an elastic component used for rebounding is arranged between the outer side of the expansion sliding block and the disc chuck.

Further, template and cone between be provided with adjusting screw, adjusting screw's the outside cover is equipped with colored dish guiding axle and colored dish uide bushing in proper order, be connected through the screw thread between adjusting screw and the colored dish guiding axle, colored dish uide bushing is fixed mutually with the colored dish and can follow colored dish guiding axle lateral surface and move from top to bottom. Through the cooperation of adjusting screw, colored dish guiding axle and colored dish uide bushing, conveniently adjust the position of cone and colored dish.

Furthermore, a plurality of inner guide structures and a plurality of return springs are arranged between the template and the faceplate.

Furthermore, a plurality of fastening bolts used for locking and fixing are arranged between the template and the faceplate, and equal-height sleeves are sleeved outside the fastening bolts. The arrangement of the equal-height sleeves can ensure the parallel precision between the faceplate and the template, reduce the risk that components such as an inner guide structure, a return spring and the like are broken due to insufficient parallel precision, and prolong the service life of the components.

Furthermore, the top center of lower mould department places the protection casing that covers cone and each expansion slider top, last mould and lower mould between leave and dodge the accommodation space of protection casing. Because the stroke of each expansion slider is limited, place the protection casing of certain size at the lower mould top, need not to fix its locking, even in the middle of the process of expansion mould operation, also can protect the lower mould, prevent that dust debris from falling into the lower mould clearance in the middle of, cause harmful effects to the lower mould.

The utility model has the following beneficial effects: 1. a hanging table and a containing groove are arranged between the mold sections in the upper mold and the expanding slide block, when the mold sections are installed, the hanging table and the containing groove can be used for assisting in installation, physical strength is saved, mold changing is convenient and rapid, and mold changing efficiency is improved; 2. the locking structure between the die clack and the expansion sliding block is transversely arranged, so that the die change is more convenient, the installation condition is provided for adding the gasket, and the risk of fracture of the expansion sliding block can be reduced to a certain extent; 3. set up the gasket between mould lamella and the expansion slider, can use wearing and tearing and do and fall after the face maintenance handles in the mould lamella for a long time, compensate the mould lamella external diameter, increase the maintainable number of times of mould lamella, effectively improve the life of mould lamella, reduce mould cost input.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of a prior art mold half coupled to an expanding slide;

FIG. 3 is a schematic view of the present invention showing the connection of the mold halves to the expansion block;

FIG. 4 is a cross-sectional view of a mold half of the present invention;

FIG. 5 is a top view of a mold half of the present invention;

FIG. 6 is a cross-sectional view of the expanding slide of the present invention;

FIG. 7 is a side view of the spreading slide of the present invention;

FIG. 8 is a front view of the upper die shim of the present invention;

FIG. 9 is a side view of an upper die shim of the present invention;

FIG. 10 is a top view of an upper die shim according to the present invention.

Description of the main component symbols: 1. a rim; 2. an upper die; 3. a lower die; 4. an expansion assembly; 5. a mold half; 6. expanding the sliding block; 7. hanging a table; 8. an accommodating groove; 9. a gasket; 10. mounting a through hole; 11. a locking structure; 12. a die assembly; 13. a template; 14. a cone; 15. a flower disc; 16. an elastic member; 17. adjusting the screw rod; 18. a faceplate guide shaft; 19. a faceplate guide sleeve; 20. an inner guide structure; 21. a return spring; 22. fastening a bolt; 23. an equal-height sleeve; 24. a protective cover; 25. an accommodating space.

Detailed Description

The utility model is further described with reference to the following drawings and detailed description.

The rim expanding die convenient to change the die shown in fig. 1-10 comprises an upper die 2 and a lower die 3, wherein each of the upper die 2 and the lower die 3 comprises a die assembly 12 and a plurality of groups of expanding assemblies 4 uniformly arranged in an annular shape, each expanding assembly 4 comprises a die flap 5 and an expanding slide block 6, the outer side surface of each die flap 5 is matched with the shape of the inner side surface of the rim 1, each expanding slide block 6 is fixedly arranged on the inner side of each die flap 5, one side of each side surface, which is mutually connected between each die flap 5 and each expanding slide block 6 of the upper die 2, of each expanding slide block is provided with a convex hanging platform 7, the other side of each expanding slide block is provided with an accommodating groove 8 in which each hanging platform 7 can be placed, each die assembly 12 moves towards each expanding slide block 6 and extrudes each expanding slide block 6 to drive each die flap 5 to expand along the radial direction; the die assembly 12 moves away from the expansion slides 6, and each expansion slide 6 drives the die segments 5 to contract in the radial direction.

The hanging table 7 and the accommodating groove 8 are both arc-shaped. The mould halves 5 and the expansion slide 6 are connected to each other by means of a transversely arranged locking structure 11. A gasket 9 is arranged between the mould section 5 and the expanding slide block 6, and a mounting through hole 10 for the locking structure 11 to pass through is formed in the gasket 9. The thickness of each gasket 9 in the upper die 2 or the lower die 3 is equal.

The die assembly 12 comprises a die plate 13, a cone 14 and a disc chuck 15, the upper end and the lower end of the cone 14 are large and small, the smaller end faces the center of the die, the larger end is fixed with the die plate 13, the disc chuck 15 is sleeved on the outer side of the cone 14 and is movably connected with the die plate 13 up and down, the expansion sliding block 6 is uniformly arranged on the outer side of the cone 14 along the circumferential direction of the disc chuck 15 and is connected with the disc chuck 15 in a sliding mode along the radial direction of the disc chuck 15, and an elastic component 16 used for rebounding is arranged between the outer side of the expansion sliding block 6 and the disc chuck 15. An adjusting screw 17 is arranged between the template 13 and the cone 14, a disc chuck guide shaft 18 and a disc chuck guide sleeve 19 are sequentially sleeved on the outer side of the adjusting screw 17, the adjusting screw 17 is connected with the disc chuck guide shaft 18 through threads, and the disc chuck guide sleeve 19 is fixed with the disc chuck 15 and can move up and down along the outer side surface of the disc chuck guide shaft 18. A plurality of inner guide structures 20 and a plurality of return springs 21 are arranged between the template 13 and the faceplate 15. A plurality of fastening bolts 22 for locking and fixing are arranged between the template 13 and the faceplate 15, and the outer sides of the fastening bolts 22 are sleeved with equal-height sleeves 23. The center of the top of the lower die 3 is provided with a protective cover 24 covering the cone 14 and the top of each expansion sliding block 6, and an accommodating space 25 avoiding the protective cover 24 is reserved between the upper die 2 and the lower die 3.

When the rim 1 is expanded, the upper die 2 moves downwards to drive the upper cone 14 and the lower cone 14 to move towards each expansion sliding block 6, each expansion sliding block 6 is extruded by the cone 14 to drive the die halves 5 connected with the expansion sliding blocks to radially slide outwards along the disc chuck 15 for expansion, the outer side surfaces of the die halves 5 are in contact with and extrude the inner side surface of the rim 1 to expand the rim 1 into a circle, when the expansion sliding blocks are expanded to a specified degree, the upper die 2 moves upwards, the upper cone 14 and the lower cone 14 deviate from each expansion sliding block 6, each expansion sliding block 6 drives the die halves 5 connected with the expansion sliding blocks to radially slide inwards along the disc chuck 15 for resetting, and the expansion operation is completed.

When carrying out the retooling to expansion mould, the accessible hangs the cooperation between platform 7 and the holding recess 8, and supplementary mould lamella 5 aims at the mounted position, in the middle of the process before the locking is accomplished, saves the physical demands of lifting, need not to lift even, cooperates the locking structure 11 of horizontal setting, and the retooling is easy and laborsaving, and the retooling is efficient. Because vertical expansion mould is upper and lower structure, when the lower mould 3 retooling, can place mould lamella 5 supplementary installation on expansion slider 6, and go up mould 2 retooling then hard a lot, consequently, hang platform 7 and holding groove 8 structure and mainly set up in last mould 2, supplementary effect is the best, but also can set up in lower mould 3, or be applied to horizontal expansion mould.

In addition, because the amount of maintenance allowed for the mold halves 5 in existing expansion molds is limited, the mold halves 5 cannot be easily lowered for maintenance after wear, in order to save cost. Once maintain, the profile of mould lamella 5 will appear difference with the design requirement after the turning, and the external diameter of mould lamella 5 diminishes, and according to the installation back of original vertical locking structure 11 that sets up, in order to satisfy the expansion demand, can only increase the expansion degree of mould lamella 5 and expansion slider 6, this just makes the gap grow of interval between each mould lamella 5 after the expansion, leads to on the rim 1 can not expand in place with the position that the gap corresponds, and the expansion effect is not good. Therefore, in addition to the new mold half 5, the worn and repaired mold half 5 needs to be compensated for its outer diameter by adding shims 9. Therefore, the improved locking structure 11 arranged transversely can provide conditions for installing the gasket 9, solve the problems of limited maintainability and insufficient outer diameter of the mold half 5, increase the maintainability times of the mold half 5, effectively prolong the service life of the mold half 5 and reduce the cost input of the expansion mold. In a similar way, aiming at the horizontal expansion mould with the left and right structure, the locking structure 11 is adjusted to be arranged along the radial direction of the mould half 5, and the same effect can be achieved by combining the gasket 9.

While the utility model has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims (10)

1. The utility model provides a convenient rim expansion mould of retooling, includes mould and lower mould, its characterized in that: the upper die and the lower die respectively comprise a die assembly and a plurality of groups of expansion assemblies which are uniformly arranged in an annular shape, each expansion assembly comprises a die flap and an expansion sliding block, the outer side surface of each die flap is matched with the inner side surface of the rim in shape, each expansion sliding block is fixedly arranged on the inner side of each die flap, one side of each side surface, which is connected between each die flap and each expansion sliding block, of the upper die is provided with an outward-protruding hanging table, the other side of each side surface is provided with an accommodating groove in which the hanging table can be placed, each die assembly moves towards the direction of each expansion sliding block and extrudes each expansion sliding block, and each expansion sliding block drives each die flap to expand along the radial direction; the die assembly moves in the direction of departing from the expansion slide blocks, and each expansion slide block drives the die section to contract along the radial direction.

2. The rim expanding die convenient to change the die as claimed in claim 1, wherein: the hanging table and the accommodating groove are both arc-shaped.

3. The rim expanding die convenient to change the die as claimed in claim 1, wherein: the mould halves and the expanding sliding block are connected with each other through a locking structure arranged transversely.

4. The rim expanding die convenient to change the die as claimed in claim 3, wherein: and a gasket is arranged between the die clack and the expansion sliding block, and a mounting through hole for the locking structure to pass through is formed in the gasket.

5. The rim expanding die convenient to change the die as claimed in claim 4, wherein: and the thicknesses of all the gaskets in the upper die or the lower die are equal.

6. The rim expanding die convenient to change the die as claimed in any one of claims 1 to 5, wherein: the die assembly comprises a template, a cone and a disc chuck, the upper end and the lower end of the cone are larger and smaller, the smaller end faces the center of the die, the larger end is fixed with the template, the disc chuck is sleeved on the outer side of the cone and is movably connected with the template vertically, the expansion sliding block is uniformly arranged on the outer side of the cone along the circumferential direction of the disc chuck and is in sliding connection with the disc chuck along the radial direction of the disc chuck, and an elastic component used for rebounding is arranged between the outer side of the expansion sliding block and the disc chuck.

7. The rim expanding die convenient to change the die as claimed in claim 6, wherein: the novel flower disc device is characterized in that an adjusting screw is arranged between the template and the cone, a flower disc guide shaft and a flower disc guide sleeve are sequentially sleeved on the outer side of the adjusting screw, the adjusting screw is connected with the flower disc guide shaft through threads, and the flower disc guide sleeve is fixed with the flower disc and can move up and down along the outer side surface of the flower disc guide shaft.

8. The rim expanding die convenient to change the die as claimed in claim 6, wherein: and a plurality of inner guide structures and a plurality of return springs are arranged between the template and the faceplate.

9. The rim expanding die convenient to change the die as claimed in claim 6, wherein: a plurality of fastening bolts used for locking and fixing are arranged between the template and the faceplate, and equal-height sleeves are sleeved on the outer sides of the fastening bolts.

10. The rim expanding die convenient to change the die as claimed in claim 6, wherein: the protection cover that covers cone and each expansion slider top is placed to the top central point department of lower mould, last mould and lower mould between leave and dodge the accommodation space of protection cover.

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