CN211277276U - Wheel set founds press-fit die utensil - Google Patents

Abstract

The utility model discloses a wheel assemblage press-fit die utensil, including last mould and lower mould, go up the mould and establish directly over the lower mould. The lower die comprises a lower die plate, a guide sleeve, a guide pillar, an elastic body, a top plate, a base plate, a spoke middle hole positioning disc and a rim positioning disc. The bottom of the guide sleeve is fixed on the lower template, a guide hole is formed in the guide sleeve, the guide pillar is slidably mounted in the guide hole, and an interval is formed between the guide pillar and the lower template. The bottom of the guide post is provided with a containing groove, and the elastic body is arranged in the containing groove and is in a compressed state. The rim positioning disc is sleeved on the outer side of the guide sleeve, and the bottom of the rim positioning disc is fixed on the lower template. The outer peripheral face of the rim positioning disc is provided with a positioning cambered surface, and the positioning cambered surface comprises a first cambered surface matched with the shape of the inner side face of the upper portion of a bead seat of the rim and a second cambered surface matched with the inner side face of the bottom of a tire mounting and dismounting groove of the rim. The utility model discloses improved the location position of rim, reduced the distance of atress point and assembly surface, shortened the arm of force to reduce the moment that receives, improve production stability.

Description

Wheel set founds press-fit die utensil

Technical Field

The utility model relates to a technical field is made to wheel assembly fixture, in particular to wheel assemblage press-fit die utensil.

Background

The wheel is a rotating assembly which bears load between a tire and an axle and mainly comprises a rim, a spoke and a hub, wherein the rim is a part fixedly arranged in the wheel, the spoke is a supporting part between the axle and the rim, the hub is a rotating assembly which is connected with the wheel and the axle and is responsible for bearing load between the tire and the axle, and the spoke is pressed into the rim by a wheel press-fit mold arranged on a press workbench during assembly.

As shown in fig. 1, the positioning of the rim 100 by the existing wheel assembly press-fit mold is located at the rim and the R-corner, and the relative distance from the assembly surface is relatively long, so that during interference press-fit, the moment applied to the rim 100 is large, which easily causes pressure deviation, poor press-fit such as strain, and particularly, the assembly of light products, even the rim 100 is deformed, which causes product scrap. In order to meet the market trend of more and more light weight demands, the improvement of the mold structure is urgently needed to improve the problem.

Disclosure of Invention

To the problem, an object of the utility model is to provide a wheel set founds press fit die utensil, through improving the mold to the locating position of rim, reduced the distance of atress point and fitting surface, shortened the arm of force to reduce the moment that receives, improve production stability.

In order to realize the purpose, the utility model discloses a technical scheme as follows:

the utility model provides a wheel assembly pressure-fit mould, includes mould and lower mould, last mould establish directly over the lower mould, the lower mould include lower bolster, guide pin bushing, guide pillar, elastomer, roof, backing plate, spoke mesopore positioning disk and rim positioning disk. The bottom of the guide sleeve is fixed on the lower template, a guide hole penetrating through the guide sleeve up and down is formed in the guide sleeve, the guide pillar is slidably mounted in the guide hole, and an interval is formed between the bottom surface of the guide pillar and the top surface of the lower template. The bottom center of the guide post is provided with a containing groove, and the elastic body is arranged in the containing groove and is in a compressed state. The top plate, the base plate and the spoke middle hole positioning disc are sequentially fixed above the guide pillar from bottom to top, the rim positioning disc is sleeved on the outer side of the guide sleeve, and the bottom of the rim positioning disc is fixed on the lower template. The outer peripheral face of the rim positioning disc is provided with a positioning arc face used for positioning a rim, and the positioning arc face comprises a first arc face matched with the shape of the inner side face of the upper portion of a bead seat of the rim and a second arc face matched with the inner side face of the bottom of a tire dismounting groove of the rim.

Further, the elastic body is a cylindrical spiral compression spring.

Preferably, the wire diameter of the cylindrical helical compression spring is 10-15 mm, the middle diameter is 100-150 mm, and the height is 250-350 mm.

Furthermore, the upper die comprises a matrix fixing plate, a base plate, a connecting plate and an upper die plate which are fixedly connected from bottom to top in sequence.

Furthermore, in order to facilitate hoisting, a suspension arm is fixedly arranged on the side edge of the upper template.

Furthermore, in order to facilitate hoisting, a suspension arm is fixedly arranged on the side edge of the lower template.

Furthermore, the material of rim positioning plate is 45# steel.

The utility model discloses following beneficial effect has: 1. by improving the positioning position of the die to the rim, the distance between a stress point and an assembly surface is reduced, and the force arm is shortened, so that the applied torque is reduced, and the production stability is improved; 2. the structure of the matrix fixing plate is simplified, the machining difficulty is reduced, the original electric spark machining can be changed into fast wire cutting machining, the efficiency is improved, and the cost is reduced; 3. the mold spring is changed into a cylindrical spiral compression spring with the increased outer diameter from a rectangular mold spring, the compression stroke is large, and the service life is prolonged. The utility model discloses an assemblage press-fit die utensil has reduced the production of assemblage pressure defective products such as inclined to one side, pulling, deformation and newspaper waste product through structural innovation, reduces the reprocess cost of defective products, improves the one-time qualification rate of production, has reduced the accessory processing degree of difficulty simultaneously, practices thrift the processing cost, has improved mould life.

Drawings

Fig. 1 is a schematic structural view of a wheel press-fit mold in the prior art.

Fig. 2 is a schematic structural diagram of the mold of the present invention.

Fig. 3 is a structural schematic diagram of the positioning cambered surface.

Description of the main component symbols: 100. a rim; 200. a spoke; 1. an upper die; 11. a matrix fixing plate; 12. a base plate; 13. a connecting plate; 14. mounting a template; 140. a suspension arm; 2. a lower template; 21. a lower template; 210. a suspension arm; 22. a guide sleeve; 220. a guide hole; 23. a guide post; 230. a containing groove; 24. an elastomer; 25. a top plate; 26. a base plate; 27. a spoke middle hole positioning disc; 28. a rim positioning plate; 280. positioning the arc surface; 281. a first arc surface; 282. a second cambered surface.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the following detailed description.

As shown in fig. 2 and 3, the wheel assembly press-fit mold includes an upper mold 1 and a lower mold 2, and the upper mold 1 is disposed right above the lower mold 2. The upper die 1 comprises a matrix fixing plate 11, a base plate 12, a connecting plate 13 and an upper die plate 14 which are fixedly connected from bottom to top in sequence, and a suspension arm 140 is fixedly arranged on the side edge of the upper die plate 14. The lower die 2 comprises a lower die plate 21, a guide sleeve 22, a guide pillar 23, an elastic body 24, a top plate 25, a base plate 26, a spoke middle hole positioning disc 27 and a rim positioning disc 28, and a suspension arm 210 is fixedly arranged on the side edge of the lower die plate 21. The elastic body 24 is a cylindrical helical compression spring, the wire diameter of the cylindrical helical compression spring is 12mm, the middle diameter is 120mm, and the height is 300 mm.

The bottom of the guide sleeve 22 is fixed on the lower template 21, a guide hole 220 penetrating the guide sleeve 22 up and down is formed in the guide sleeve 22, the guide post 23 is slidably mounted in the guide hole 220, and a space is formed between the bottom surface of the guide post 23 and the top surface of the lower template 21. The bottom center of the guide post 23 is formed with a receiving groove 230, and the elastic body 24 is disposed in the receiving groove 230 and is in a compressed state. The top plate 25, the base plate 26 and the spoke middle hole positioning disc 27 are sequentially fixed above the guide pillar 23 from bottom to top, the rim positioning disc 28 is sleeved on the outer side of the guide sleeve 22, the bottom of the rim positioning disc is fixed on the lower template 21, and the rim positioning disc 28 is made of 45# steel. The outer peripheral surface of the rim positioning disc 28 is provided with a positioning arc surface 280 for positioning the rim 100, and the positioning arc surface 280 comprises a first arc surface 281 matched with the shape of the inner side surface of the upper part of the bead seat of the rim 100 and a second arc surface 282 matched with the inner side surface of the bottom of the tire mounting and dismounting groove of the rim 100.

The utility model discloses a theory of operation does: the oil press slide block drives the upper die 1 of the die to upwards separate the upper die 1 and the lower die 2 of the die, the rim 100 to be pressed is placed into the lower die 2 of the assembly die, and the first cambered surface 281 and the second cambered surface 282 of the rim positioning disc 28 are respectively matched with the inner side surface of the upper part of the bead seat of the rim 100 and the inner side surface of the bottom of the tire assembling and disassembling groove of the rim 100 to realize positioning. After the positioning is finished, the spoke 200 is installed on the spoke middle hole positioning disc 27 through the middle hole positioning, the switch is started, the slider drives the upper die 1 to descend until the spoke 200 is pressed into the rim 100 in an interference mode, after pressure maintaining is carried out for several seconds, the equipment returns to the city, the die is separated, the elastic body 24 rebounds and jacks up, a product is taken out, and one operation flow is finished.

While the invention 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 invention as defined by the appended claims.

Claims (7)

1. The utility model provides a wheel group founds press-fit die utensil, includes mould and lower mould, last mould establish directly over the lower mould, its characterized in that: the lower die comprises a lower die plate, a guide sleeve, a guide pillar, an elastic body, a top plate, a base plate, a spoke middle hole positioning disc and a rim positioning disc, wherein the bottom of the guide sleeve is fixed on the lower die plate, a guide hole penetrating through the guide sleeve up and down is formed in the guide sleeve, the guide pillar is slidably mounted in the guide hole, an interval is formed between the bottom surface of the guide pillar and the top surface of the lower die plate, a containing groove is formed in the center of the bottom of the guide pillar, the elastic body is arranged in the containing groove and is in a compression state, the top plate, the base plate and the spoke middle hole positioning disc are sequentially fixed above the guide pillar from bottom to top, the rim positioning disc is sleeved on the outer side of the guide sleeve, the bottom of the rim positioning disc is fixed on the lower die plate, a positioning arc surface for positioning a rim is arranged on the outer peripheral surface of the rim positioning disc, and the positioning arc surface And a second cambered surface is arranged.

2. The wheel assembly press-fit mold according to claim 1, wherein: the elastic body is a cylindrical spiral compression spring.

3. The wheel assembly press-fit mold according to claim 2, wherein: the wire diameter of the cylindrical helical compression spring is 10-15 mm, the middle diameter is 100-150 mm, and the height is 250-350 mm.

4. The wheel assembly press-fit mold according to claim 1, wherein: the upper die comprises a character die fixing plate, a base plate, a connecting plate and an upper die plate which are fixedly connected in sequence from bottom to top.

5. The wheel assembly press-fit mold according to claim 4, wherein: and a suspension arm is fixedly arranged on the side edge of the upper template.

6. The wheel assembly press-fit mold according to claim 1, wherein: and a suspension arm is fixedly arranged on the side edge of the lower template.

7. The wheel assembly press-fit mold according to any one of claims 1 to 6, wherein: the rim positioning plate is made of 45# steel.

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