CN111558704A - Mould structure of bicycle hub - Google Patents
Mould structure of bicycle hub Download PDFInfo
- Publication number
- CN111558704A CN111558704A CN202010388769.0A CN202010388769A CN111558704A CN 111558704 A CN111558704 A CN 111558704A CN 202010388769 A CN202010388769 A CN 202010388769A CN 111558704 A CN111558704 A CN 111558704A
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- Prior art keywords
- ejection
- hub
- plate
- mold
- fixing plate
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/20—Accessories: Details
- B22D17/22—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/20—Accessories: Details
- B22D17/22—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
- B22D17/2236—Equipment for loosening or ejecting castings from dies
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The invention discloses a mold structure of a bicycle hub, which relates to the technical field of bicycle hub production and comprises an upper template, a lower template and an ejection mechanism. By adopting the technical scheme, the ejection cylinder and the fixed insert are matched in the ejection mechanism, the upper end of the ejection cylinder extends into the center of the inner part of the spreader cone, and the hub shaft of the bicycle integrated wheel after die-casting is ejected and demoulded, so that the ejection contact area is large, the wheel can be effectively ejected, the ejection cylinder replaces a thimble to prolong the service life of the ejection mechanism, the risks of loss and damage to the thimble are avoided, the cost is effectively saved, and the product quality is further improved.
Description
Technical Field
The invention relates to the technical field of bicycle hub production, in particular to a mold structure of a bicycle hub.
Background
Nowadays, bicycles are widely applied to daily life of people as a travel tool, and have the advantages of environmental protection, emission reduction, convenient use, environmental protection and the like.
The integrated bicycle wheel is mainly formed by casting magnesium alloy, is formed by connecting a plurality of spokes between a hub shaft and a hub, has simple structure, lower cost and good forming effect, but is provided with an installation cavity for installing a brake component because the hub shaft of the integrated bicycle wheel is provided with the installation cavity, and is of a die-casting integrated structure with the spokes and the hub.
Among the prior art, in the die casting die design of the integrative wheel of bicycle, the structure of the wheel hub axle department of the integrative wheel of bicycle is heavy, adopts the form of thimble to carry out ejecting demolding to the integrative wheel of bicycle and causes the broken needle easily, the loss, or the phenomenon such as top unbalance appears, and often need change the thimble and restore for manufacturing cost increases, is unfavorable for product quality's improvement.
Disclosure of Invention
In view of the above problems, the present invention provides a mold structure for a bicycle hub to solve the problems of the prior art that the mold structure is easy to be damaged due to the ejector pin ejection.
In order to solve the technical problems, the technical scheme of the invention is as follows:
a mold structure for a bicycle hub, comprising: the center of the upper end of the upper template is provided with a sprue, the lower end surface of the upper template is embedded with a hub cavity, the center of the hub cavity is provided with an upper mold glue inlet flow channel communicated with the sprue, the peripheral side of the hub cavity is symmetrically provided with shovel base mounting grooves, and inclined guide pillars which are obliquely arranged towards the outer side of the upper template are arranged in the shovel base mounting grooves; the lower template is connected with the upper template through a guide pillar and is positioned at the lower end of the upper template, a hub core matched and connected with the hub cavity is embedded on the upper end face of the lower template, a spreader cone is arranged at the novel center of the hub, the spreader cone is communicated with the upper mold glue inlet runner, a shovel base is arranged on the outer peripheral side of the hub core corresponding to the shovel base mounting groove, the shovel base is connected with the inclined guide pillar in a sliding manner, and slide rails connected with the shovel base in a sliding manner are arranged on the lower template on two sides of the shovel base; the ejection mechanism is arranged below the lower template and comprises an ejection bottom plate, an ejection fixing plate, an ejection cylinder, an insert fixing plate and a fixed insert, the ejection fixing plate is arranged on the ejection bottom plate in a stacked mode, the lower end of the ejection cylinder is fixedly arranged on the ejection fixing plate, the upper end of the ejection cylinder extends into the center of the interior of the spreader cone, the insert fixing plate is arranged at the lower end of the ejection bottom plate in a stacked mode, the fixed insert is arranged in the ejection cylinder in a penetrating mode, the lower end of the fixed insert is fixed on the insert fixing plate, and the upper end of the fixed insert penetrates through the center of the spreader cone and extends into the glue inlet flow channel of the upper mold.
Furthermore, a plurality of vertical thimble holes penetrating through the lower template are formed in the hub core, a plurality of thimbles are vertically arranged on the ejection fixing plate, and the upper ends of the thimbles stretch into the thimble holes and are close to the upper ends of the thimble holes.
Furthermore, the thimble holes are distributed in an annular shape on the hub core, and the thimbles are vertically connected in an annular shape on the ejection fixing plate.
Furthermore, a cushion block is arranged at the lower end of the lower template, and a first connecting clamping groove is formed in the cushion block.
Furthermore, the cushion blocks are distributed on the side edges of the ejection bottom plate and the ejection fixing plate.
Furthermore, the upper end face of the upper die plate is provided with a panel, and a second connecting clamping groove is formed in the joint of the panel and the side edge of the upper die plate.
Furthermore, reinforcing columns are symmetrically arranged at the lower end of the lower template, the reinforcing columns are arranged around the ejection ejector sleeve in a rectangular distribution mode, the lower ends of the reinforcing columns penetrate through the ejection bottom plate and the ejection fixing plate, and the lower end surfaces of the reinforcing columns and the lower end surfaces of the cushion blocks are on the same horizontal plane.
By adopting the technical scheme, the ejection cylinder and the fixed insert are matched in the ejection mechanism, the upper end of the ejection cylinder extends into the center of the inner part of the spreader cone, and the hub shaft of the bicycle integrated wheel after die-casting is ejected and demoulded, so that the ejection contact area is large, the wheel can be effectively ejected, the ejection cylinder replaces a thimble to prolong the service life of the ejection mechanism, the risks of loss and damage to the thimble are avoided, the cost is effectively saved, and the product quality is further improved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an exploded view of the present invention;
FIG. 3 is a schematic structural view of an upper mold plate according to the present invention;
FIG. 4 is a schematic structural view of the lower template of the present invention.
In the drawings, 1-wheel; 10-upper template; 11-a gate; 12-a hub cavity; 13-feeding the glue into the runner from the upper die; 14-a shovel base mounting groove; 15-an inclined guide post; 16-a panel; 161-a second connecting card slot; 20-a lower template; 21-a hub core; 22-a splitter cone; 23-shovel base; 24-a slide rail; 25-thimble hole; 26-cushion block; 261-a first connecting card slot; 27-a reinforcement column; 30-an ejection mechanism; 31-ejecting the bottom plate; 32-ejecting out the fixed plate; 33-ejecting the ejector sleeve; 34-insert securing plate; 35-fixing the insert; 36-ejector pin.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
As shown in fig. 1 to 4, a mold structure of a bicycle hub includes an upper mold plate 10, a lower mold plate 20 and an ejection mechanism 30, wherein a gate 11 for die-casting feeding is disposed in the center of the upper end of the upper mold plate 10, a hub cavity 12 is inlaid in the lower end surface of the upper mold plate 10, an upper mold glue inlet flow channel 13 communicated with the gate 11 is disposed in the center of the hub cavity 12, shovel base mounting grooves 14 are symmetrically disposed on the outer peripheral side of the hub cavity 12, and an inclined guide post 15 is disposed in the shovel base mounting groove 14 and inclined toward the outer side of the upper mold plate 10.
The lower template 20 is connected with the upper template 10 through a guide post and is positioned at the lower end of the upper template 10, a hub mold core 21 which is in matched connection with the hub cavity 12 is embedded in the upper end face of the lower template 20, a sprue spreader 22 is arranged at the novel center of the hub, the sprue spreader 22 is communicated with the upper mold glue inlet flow channel 13, and materials are introduced into the hub mold core 21 through the sprue spreader 22; the shovel base 23 is arranged on the outer periphery of the hub core 21 corresponding to the shovel base mounting groove 14, the shovel base 23 is connected with the inclined guide post 15 in a sliding mode, slide rails 24 connected with the shovel base 23 in a sliding mode are arranged on the lower template 20 on two sides of the shovel base 23, the shovel base 23 is arranged on the outer periphery of the hub core 21 to mold a hub of the wheel 1, and when the die is opened, the lower template 20 moves the shovel base 23 to move along the outer side edge of the lower template 20 of the slide rails 24 through the inclined guide post 15 to separate the die-cast wheel 1 from the side edge and the hub molding portion.
The ejection mechanism 30 is arranged below the lower die plate 20, the ejection mechanism 30 comprises an ejection bottom plate 31, an ejection fixing plate 32, an ejection cylinder 33, an insert fixing plate 34 and a fixed insert 35, the ejection fixing plate 32 is arranged on the ejection bottom plate 31 in a stacked manner, the lower end of the ejection cylinder 33 is fixedly arranged on the ejection fixing plate 32, the upper end of the ejection cylinder 33 extends into the center of the interior of the spreader cone 22 and is used for conveniently abutting against the hub shaft of the wheel 1 during demolding, the insert fixing plate 34 is arranged at the lower end of the ejection bottom plate 31 in a stacked manner, the fixed insert 35 is arranged in the ejection cylinder 33 in a penetrating manner and plays a fixing role in the ejection cylinder 33, the lower end of the fixed insert 35 is fixed on the insert fixing plate 34, and the upper end of the fixed insert 35 penetrates through the center of the spreader cone 22 and extends into the upper die glue inlet flow channel 13 so as to form a hole at the hub.
In this embodiment, a plurality of ejector pins 36 vertically penetrating through the lower mold plate 20 are disposed on the hub mold core 21, the ejector pins 36 are disposed on the hub mold core 21 in an annular distribution, a plurality of ejector pins 36 are vertically disposed on the ejector fixing plate 32, the ejector pins 36 are vertically connected to the ejector fixing plate 32 in an annular arrangement, and upper ends of the plurality of ejector pins 36 extend into the ejector pins 36 and approach upper ends of the ejector pins 36 in the holes 25. The ejector pins 36 are distributed at the inner side of the hub forming of the wheel 1, the ejector pins 36 eject waste materials on the inner side of the hub of the wheel 1 through a designed flow channel, and the ejector pins 36 are matched with the ejector sleeve 33 to eject and demould the die-casting formed wheel 1, so that the formed part is ejected in a balanced manner, and the demould is smooth.
In this embodiment, the lower mold plate 20 has a spacer 26 at the lower end thereof, and the spacer 26 has a first connecting slot 261. Specifically, the cushion blocks 26 are distributed on the side edges of the ejector base plate 31 and the ejector fixing plate 32. This first connection card groove 261 is used for connecting the die casting machine or is convenient for artifical die sinking when repairing the mould.
In this embodiment, the upper end surface of the upper die plate 10 is provided with a panel 16, a second connecting clamping groove 161 is arranged at the joint of the panel 16 and the side edge of the upper die plate 10, and the second connecting clamping groove 161 is used for connecting a die casting machine or facilitating manual die opening during die repairing and has the same function as the first connecting clamping groove 261 on the cushion block 26.
In this embodiment, the lower end of the lower mold plate 20 is symmetrically provided with the reinforcing columns 27, the reinforcing columns 27 are arranged around the ejector sleeve 33 in a rectangular distribution, the lower ends of the reinforcing columns 27 penetrate through the ejector base plate 31 and the ejector fixing plate 32, and the lower end surfaces of the reinforcing columns 27 and the lower end surfaces of the cushion blocks 26 are on the same horizontal plane. The reinforcing columns 27 are arranged around the ejector sleeve 33 in a rectangular distribution, so that the lower template 20 is prevented from being deformed by the clamping pressure of the die-casting machine, which causes the ejector sleeve 33 and the fixed insert 35.
By adopting the technical scheme, the ejection cylinder and the fixed insert are matched in the ejection mechanism, the upper end of the ejection cylinder extends into the center of the inner part of the spreader cone, and the hub shaft of the bicycle integrated wheel after die-casting is ejected and demoulded, so that the ejection contact area is large, the wheel can be effectively ejected, the ejection cylinder replaces a thimble to prolong the service life of the ejection mechanism, the risks of loss and damage to the thimble are avoided, the cost is effectively saved, and the product quality is further improved.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, and the scope of protection is still within the scope of the invention.
Claims (7)
1. A mold structure for a bicycle hub, comprising:
the center of the upper end of the upper template is provided with a sprue, the lower end surface of the upper template is embedded with a hub cavity, the center of the hub cavity is provided with an upper mold glue inlet flow channel communicated with the sprue, the peripheral side of the hub cavity is symmetrically provided with shovel base mounting grooves, and inclined guide pillars which are obliquely arranged towards the outer side of the upper template are arranged in the shovel base mounting grooves;
the lower template is connected with the upper template through a guide pillar and is positioned at the lower end of the upper template, a hub core matched and connected with the hub cavity is embedded on the upper end face of the lower template, a spreader cone is arranged at the novel center of the hub, the spreader cone is communicated with the upper mold glue inlet runner, a shovel base is arranged on the outer peripheral side of the hub core corresponding to the shovel base mounting groove, the shovel base is connected with the inclined guide pillar in a sliding manner, and slide rails connected with the shovel base in a sliding manner are arranged on the lower template on two sides of the shovel base;
the ejection mechanism is arranged below the lower template and comprises an ejection bottom plate, an ejection fixing plate, an ejection cylinder, an insert fixing plate and a fixed insert, the ejection fixing plate is arranged on the ejection bottom plate in a stacked mode, the lower end of the ejection cylinder is fixedly arranged on the ejection fixing plate, the upper end of the ejection cylinder extends into the center of the interior of the spreader cone, the insert fixing plate is arranged at the lower end of the ejection bottom plate in a stacked mode, the fixed insert is arranged in the ejection cylinder in a penetrating mode, the lower end of the fixed insert is fixed on the insert fixing plate, and the upper end of the fixed insert penetrates through the center of the spreader cone and extends into the glue inlet flow channel of the upper mold.
2. The mold structure for a bicycle hub according to claim 1, wherein the hub core has a plurality of pin holes vertically penetrating the lower mold plate, the ejector fixing plate has a plurality of pins vertically disposed thereon, and upper ends of the plurality of pins extend into the pin holes and are close to upper ends of the pin holes.
3. The mold structure for a bicycle hub according to claim 2, wherein said ejection pin holes are annularly arranged on said hub core, and said ejection pins are annularly and vertically connected to said ejection fixing plate.
4. The mold structure for a bicycle hub according to claim 1, wherein the lower mold plate has a cushion block at a lower end thereof, and the cushion block has a first engaging groove.
5. The mold structure for a bicycle hub according to claim 4, wherein the spacers are disposed on the side edges of the ejector retainer plate and the ejector retainer plate.
6. The mold structure of a bicycle wheel according to claim 1, wherein a panel is disposed on an upper end surface of the upper mold plate, and a second connecting slot is disposed at a connecting position of the panel and a side edge of the upper mold plate.
7. The mold structure for bicycle wheels according to claim 1, wherein the lower mold plate is symmetrically provided with reinforcing columns at the lower end, the reinforcing columns are distributed around the ejector sleeve in a rectangular shape, the lower ends of the reinforcing columns penetrate through the ejector base plate and the ejector fixing plate, and the lower end surfaces of the reinforcing columns and the lower end surfaces of the cushion blocks are in the same horizontal plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010388769.0A CN111558704A (en) | 2020-05-09 | 2020-05-09 | Mould structure of bicycle hub |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010388769.0A CN111558704A (en) | 2020-05-09 | 2020-05-09 | Mould structure of bicycle hub |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111558704A true CN111558704A (en) | 2020-08-21 |
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ID=72070925
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010388769.0A Pending CN111558704A (en) | 2020-05-09 | 2020-05-09 | Mould structure of bicycle hub |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111558704A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114570907A (en) * | 2020-12-01 | 2022-06-03 | 兰州兰石能源装备工程研究院有限公司 | Semisolid extrusion casting die for aluminum alloy wheel hub |
| CN115255326A (en) * | 2022-09-26 | 2022-11-01 | 宁波臻至机械模具有限公司 | Electric motor car gear die casting die |
-
2020
- 2020-05-09 CN CN202010388769.0A patent/CN111558704A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114570907A (en) * | 2020-12-01 | 2022-06-03 | 兰州兰石能源装备工程研究院有限公司 | Semisolid extrusion casting die for aluminum alloy wheel hub |
| CN115255326A (en) * | 2022-09-26 | 2022-11-01 | 宁波臻至机械模具有限公司 | Electric motor car gear die casting die |
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