CN220216450U - Aluminum pile casing tooth extrusion forming die - Google Patents

Abstract

The utility model discloses an aluminum casing tooth extrusion forming die, which comprises an upper die and a lower die; a pressing block is arranged in the upper die; a lower die inlet block and a driving block are arranged in the lower die; the lower die-in block is of a cylindrical structure and is provided with a concave cavity; the driving block can be arranged on the concave cavity of the lower die inlet block in a vertically movable way; the driving block is of a dovetail structure; a forming assembly is also arranged in the lower die; the molding assembly consists of a plurality of molding sliding blocks surrounding the driving block; the outer side surface of each forming sliding block is a cambered surface with teeth; the cambered surfaces of the plurality of forming sliding blocks are matched to form a cylindrical surface; the pressing block is pressed down to act on the driving block, the driving block acts on the forming sliding block, and teeth of the forming sliding block squeeze teeth on the inner wall of the aluminum protective cylinder sleeved on the forming assembly. The utility model can realize the tooth punching in the die, can solve the technical problems of high product requirement and large product rejection rate of the CNC machining process for machining product teeth, can reduce the size requirement of the preamble punching process, saves the machining cost, and improves the stability and reliability of the product.

Description

Aluminum pile casing tooth extrusion forming die

Technical Field

The utility model relates to the technical field of dies, in particular to an aluminum casing tooth extrusion forming die.

Background

With the development of the age, automobiles are now required to meet the demands of people for weight reduction, driving comfort and noise reduction in addition to the conventional objectives such as functionality, driving safety, strength and durability. The advent of air suspension systems can perfectly meet the above requirements. Air springs are an important part of air suspension systems that can achieve autonomous adjustment of suspension height and smooth ride quality. The aluminum casing, which is an important component of the air spring, needs to have the advantages of low cost, light weight, good corrosion and oxidation resistance, and good air tightness. In order to improve the assembly air tightness between the aluminum casing and other components (such as an air bag) of the air spring, internal teeth are required to be machined on the inner wall of the aluminum casing.

In the prior art, the internal teeth of the aluminum casing are generally machined by CNC (computer numerical control) machine, and a jig suitable for the aluminum casing is required to be manufactured before CNC machine machining. The aluminum protective cylinder is a stamped thin-wall piece; the machining of the stamping product is strict in the radial dimension requirement of the stamping product, the stretching process can enable the thickness of the material to be uneven and thin, the workpiece is difficult to hold tightly during machining, the machining and the stamping are very challenging, CNC machining is adopted for machining the inner teeth of the aluminum casing, the rejection rate of the product is high, the unit price cost of the product is also improved, and the market competitiveness of the product is reduced.

Disclosure of Invention

In order to solve the technical problems, the utility model aims to provide an aluminum casing tooth extrusion forming die. The die can realize in-die tooth punching, can reduce the size requirement of the preamble punching process, saves the processing cost and improves the stability and the reliability of products.

In order to achieve the technical purpose and the technical effect, the utility model is realized by the following technical scheme:

an aluminum pile casing tooth extrusion forming die comprises an upper die and a lower die; a pressing block is arranged in the upper die; a lower die inlet block and a driving block are arranged in the lower die; the lower die-in block is of a cylindrical structure and is provided with a concave cavity; the driving block can be arranged on the concave cavity of the lower die inlet block in a vertically movable mode; the driving block is of a dovetail structure; a forming assembly is also arranged in the lower die; the molding assembly consists of a plurality of molding sliding blocks surrounding the driving block; the outer side surface of each forming sliding block is a cambered surface with teeth; the cambered surfaces of the plurality of forming sliding blocks are matched to form a cylindrical surface; the pressing block is pressed down to act on the driving block, the driving block acts on the forming sliding block, and teeth of the forming sliding block squeeze teeth on the inner wall of the aluminum protective cylinder sleeved on the forming assembly.

Further, the upper die comprises an upper die seat component and a stripper plate; the upper die holder assembly comprises an upper die holder, an upper base plate and an upper clamping plate which are sequentially arranged from top to bottom; the pressing block is fixed on the upper clamping plate; the upper die holder component can move up and down relative to the stripper plate; the stripper plate has perforations through which the briquettes pass downwardly.

Further, the lower die comprises a lower die seat component and a floating plate; the lower die holder component comprises a lower die holder, a lower base plate and a lower die plate which are sequentially arranged from bottom to top; the lower die inlet block is arranged on the lower die plate; the floating plate is arranged above the lower die holder assembly and can move up and down relative to the lower die holder assembly.

Further, a beating rod is arranged on the stripper plate, and the beating rod can act on the floating plate.

Further, a gland is arranged on the driving block and the forming assembly, a pressing rod is arranged on the gland, and a pressing block in the upper die acts on the driving block through the pressing rod.

Further, the peripheral surface of the driving block is provided with three dovetail bulges and three dovetail grooves which are uniformly distributed; the number of the molding sliding blocks is 6, wherein three molding sliding blocks are provided with dovetail matching grooves matched with dovetail protrusions of the driving block, and the other three molding sliding blocks are provided with dovetail matching protrusions matched with dovetail grooves of the driving block.

Further, a lower die spring and a knock-out plate positioned above the lower die spring are also arranged in the lower die; a vertically penetrating ejector rod is arranged in the lower die inlet block; the lower die spring acts on the knocking-out plate, the knocking-out plate acts on the ejector rod, and the ejector rod acts on the driving block.

The beneficial effects of the utility model are as follows:

the utility model can realize the tooth punching in the die, can solve the technical problems of high requirement on products and high rejection rate of produced sheets when the CNC machining process is used for machining the product teeth, can reduce the size requirement of the preamble punching process, saves the machining cost, and improves the stability and the reliability of the products.

According to the utility model, the extrusion of teeth is realized through the cooperation of the pressing block, the driving block and the forming assembly in the die, so that the processing stability of the product is improved, the debugging cost and the processing cost of the die can be reduced, the die adjusting time is shortened, the dimensional accuracy of the product is improved, the mass production can be realized in a short time, a large amount of cost is saved, and the market competitiveness of the product is improved.

Drawings

Fig. 1 is a schematic perspective view of an aluminum casing tooth extrusion molding die (closed die state) according to the present utility model.

Fig. 2 is a top view of the aluminum casing extrusion forming die of the present utility model in the die opening process.

Fig. 3 is a cross-sectional view taken along line A-A of fig. 2.

Fig. 4 is a sectional view taken along line B-B of fig. 2.

Fig. 5 is a top view of the aluminum casing tooth extrusion die of the present utility model in a closed die.

Fig. 6 is a sectional view taken along line F-F in fig. 5.

Fig. 7 is a sectional view taken along line G-G in fig. 5.

Fig. 8 is a schematic view of a part of the structure of the aluminum casing extrusion die of the utility model.

Fig. 9 is an exploded view of the structure shown in fig. 8.

Fig. 10 is a schematic structural view of a driving block in the aluminum casing extrusion forming die of the present utility model.

In the figure, 1: an upper die holder; 2: an upper backing plate; 3: an upper clamping plate; 4: a stripper plate; 5: briquetting; 6: a lower die holder; 7: a lower backing plate; 8: a lower template; 9: a float plate; 10: lower die insert, 101: a cavity; 11: drive block, 1101: dovetail groove, 1102: dovetail protrusions; 12: a connecting shaft; 13: shaping slider, 1301: teeth; 14: a gland; 15: a compression bar; 16: a lower die spring; 17: a knock-out plate; 18: a push rod; 19: pole beating; 20: an aluminum sleeve.

Detailed Description

The preferred embodiments of the present utility model will be described in detail below with reference to the accompanying drawings so that the advantages and features of the present utility model can be more easily understood by those skilled in the art, thereby making clear and defining the scope of the present utility model.

In the description of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "front", "rear", "left", "right", "upper", "lower", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

A preferred embodiment of an aluminum casing tooth extrusion die is shown in fig. 1-9 and includes an upper die and a lower die.

The upper die comprises an upper die seat component and a stripper plate; the upper die holder assembly comprises an upper die holder 1, an upper base plate 2 and an upper clamping plate 3 which are sequentially arranged from top to bottom; the upper die holder 1, the upper base plate 2 and the upper clamping plate 3 are fixedly connected together; the stripper plate 4 is movably connected with the upper die holder 1 through a connecting piece (such as a same-height bolt, not shown) passing through the upper base plate 2 and the upper clamping plate 3; an upper die spring (not shown in the figure) is also mounted on the upper die holder 1, passes through the upper base plate 2 and the upper clamping plate 3, and is pressed against the stripper plate 4. The upper die holder assembly can move up and down relative to the stripper plate 4. The upper die is provided with a pressing block 5. The pressing block 5 is fixed on the upper clamping plate 3. The stripper plate 4 has perforations through which the briquettes 5 pass downwardly.

The lower die comprises a lower die base component and a floating plate 9 arranged above the lower die base component; the lower die holder assembly comprises a lower die holder 6, a lower base plate 7 and a lower die plate 8 which are sequentially arranged from bottom to top and fixedly connected together; the lower die is also provided with a lower die inlet block 10 and a driving block 11; the lower die inlet block 10 is connected with the lower die plate 8 through a fixed connecting piece; the lower mold block 10 has a cylindrical structure with a cavity 101 at an upper portion thereof. The driving block 11 is movably disposed on the cavity 101 of the lower mold block 10. Specifically, the middle part of the lower die insert block 10 is connected with a connecting shaft 12 through a fixing screw; the connection shaft 12 protrudes upward. The driving block 11 is sleeved on the connecting shaft 12, and can move up and down relative to the lower die-in block 10 along the connecting shaft 12.

As shown in fig. 10, the entire driving block 11 has a dovetail structure with a wide upper part and a narrow lower part. The peripheral face of the drive block 11 has three dovetail protrusions 1101 and three dovetail grooves 1102 uniformly distributed. The lower die is also provided with a forming assembly. The forming assembly is composed of a plurality of forming blocks 13 surrounding the driving block 11. In the present embodiment, the number of the molding sliders 13 is 6, wherein three molding sliders 13 have dovetail fitting grooves that fit with the dovetail protrusions 1102 of the driving block 11, and the other three molding sliders 13 have dovetail fitting protrusions that fit with the dovetail grooves 1101 of the driving block 11. The forming slide block 13 is assembled with the driving block 11 through the fit of the dovetail fitting protrusion and the dovetail groove or the fit of the dovetail fitting groove and the dovetail protrusion. The outer side surface of each forming sliding block 13 is an arc surface with a plurality of circles of teeth 1301; the cambered surfaces of the 6 forming sliders 13 are matched to form a cylindrical surface. The driving block 11 and the forming assembly are also provided with a gland 14; the middle part of the gland 14 is connected with the upper end of the connecting shaft 12 through a fixed screw. A plurality of pressing rods 15 capable of moving up and down are arranged on the pressing cover 14, and the pressing blocks 5 in the upper die act on the driving blocks 11 through the pressing rods 15.

The aluminum protective cylinder 20 is sleeved on a cylinder structure formed by the cooperation of the lower die inlet block 10, the driving block 11 and the forming assembly.

The middle part of the floating plate 9 in the lower die is provided with a sleeving hole, and the floating plate 9 is sleeved on the lower die inlet block 10. Spring elements (not shown) are provided between the float plate 9 and the lower die plate 8; the float plate 9 is movable up and down relative to the lower die holder assembly. The float plate 9 acts on the lower end of the aluminum casing 20 to eject the aluminum casing 20 when the material is removed. Furthermore, two levers 19 are mounted on the stripper plate 4 in the upper mold, which levers 19 can act on the float plate 9 to press down the float plate 9 when closing the mold.

During molding, the pressing block 5 is pressed down to act on the driving block 11, the driving block 11 acts on the molding sliding block 13, and teeth of the molding sliding block 13 squeeze the inner wall of the aluminum protective cylinder 20 sleeved on the molding assembly.

A lower die spring (nitrogen spring) 16 and a knock-out plate 17 positioned above the lower die spring are also arranged in the lower die; a vertically penetrating ejector rod 18 is arranged in the lower die insert block 10; the lower die spring 16 acts on the knock-out plate 17, the knock-out plate 17 acts on the ejector pin 18, and the ejector pin 18 acts on the driving block 11 to move the driving block 11 upward after molding.

In operation, as shown in fig. 2, 3 and 4, the mold is in an open mold state, and at this time, the aluminum protective cylinder 20 is sleeved on a cylinder structure formed by the cooperation of the lower mold inlet block 10, the driving block 11 and the forming assembly; the float plate 9 is propped against the lower end of the aluminum casing 20. The upper die moves downwards, a beating rod 19 on the stripper plate 4 presses the floating plate 9 downwards until the floating plate 9 abuts against the lower die plate 8, at the moment, the aluminum casing 20 moves to the position, and the stripper plate 4 presses the upper end of the aluminum casing 20; the upper die holder 1, the upper base plate 2, the upper clamping plate 3 and the pressing block 5 in the upper die continue to move downwards; the pressing block 5 presses down the pressing rod 15 on the pressing cover 14, and the pressing rod 15 presses down the driving block 11; the driving block 11 makes the forming slide 13 move outwards in the radial direction, and teeth 1301 on the forming slide 13 squeeze the inner wall of the aluminum casing 20, at this time, the mold is in a mold-closed state, as shown in fig. 5, 6 and 7. After tooth extrusion is completed, the upper die moves upwards, and the stripper plate 4 leaves the aluminum sleeve 20; the lower die spring 16 acts upwards to jack the shooting plate 17, the shooting plate 17 acts on the ejector rod 18, the ejector rod 18 jacks the driving block 11, the driving block 11 moves upwards to reset, and the forming sliding block 13 moves inwards in the radial direction to reset; simultaneously, the floating plate 9 is jacked up under the action of the elastic element to jack up the aluminum protective cylinder 20, so that stripping is realized.

The utility model can realize the tooth punching in the die, can solve the technical problems of high requirement on products and high rejection rate of produced sheets when the CNC machining process is used for machining the product teeth, can reduce the size requirement of the preamble punching process, saves the machining cost, and improves the stability and the reliability of the products.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims (7)

1. The aluminum pile casing tooth extrusion forming die is characterized by comprising an upper die and a lower die; a pressing block is arranged in the upper die; a lower die inlet block and a driving block are arranged in the lower die; the lower die-in block is of a cylindrical structure and is provided with a concave cavity; the driving block can be arranged on the concave cavity of the lower die inlet block in a vertically movable mode; the driving block is of a dovetail structure; a forming assembly is also arranged in the lower die; the molding assembly consists of a plurality of molding sliding blocks surrounding the driving block; the outer side surface of each forming sliding block is a cambered surface with teeth; the cambered surfaces of the plurality of forming sliding blocks are matched to form a cylindrical surface; the pressing block is pressed down to act on the driving block, the driving block acts on the forming sliding block, and teeth of the forming sliding block squeeze teeth on the inner wall of the aluminum protective cylinder sleeved on the forming assembly.

2. The aluminum casing extrusion die of claim 1, wherein the upper die comprises an upper die base assembly and a stripper plate; the upper die holder assembly comprises an upper die holder, an upper base plate and an upper clamping plate which are sequentially arranged from top to bottom; the pressing block is fixed on the upper clamping plate; the upper die holder component can move up and down relative to the stripper plate; the stripper plate has perforations through which the briquettes pass downwardly.

3. The aluminum casing extrusion die of claim 2, wherein the lower die comprises a lower die base assembly and a float plate; the lower die holder component comprises a lower die holder, a lower base plate and a lower die plate which are sequentially arranged from bottom to top; the lower die inlet block is arranged on the lower die plate; the floating plate is arranged above the lower die holder assembly and can move up and down relative to the lower die holder assembly.

4. An aluminium casing tooth extrusion die as claimed in claim 3, wherein the stripper plate is provided with a beater bar which is capable of acting on the float plate.

5. The aluminum pile casing tooth extrusion forming die according to claim 1, wherein a gland is arranged on the driving block and the forming assembly, a compression bar is arranged on the gland, and a pressing block in the upper die acts on the driving block through the compression bar.

6. The aluminum casing extrusion die of claim 1, wherein the peripheral surface of the driving block is provided with three dovetail protrusions and three dovetail grooves which are uniformly distributed; the number of the molding sliding blocks is 6, wherein three molding sliding blocks are provided with dovetail matching grooves matched with dovetail protrusions of the driving block, and the other three molding sliding blocks are provided with dovetail matching protrusions matched with dovetail grooves of the driving block.

7. The aluminum casing extrusion forming die of claim 1, wherein a lower die spring and a knock-out plate positioned above the lower die spring are also arranged in the lower die; a vertically penetrating ejector rod is arranged in the lower die inlet block; the lower die spring acts on the knocking-out plate, the knocking-out plate acts on the ejector rod, and the ejector rod acts on the driving block.