CN204735551U - Cold extrusion molding mould of lid behind aluminium matter cell -phone - Google Patents

Abstract

The utility model discloses a cold extrusion molding die for the back cover of an aluminum mobile phone. The die is composed of an upper die and a lower die oppositely arranged. The upper die includes an upper die frame, a punch seat, a bushing, and a cylindrical pad block, punch, upper cushion, punch chuck and upper cushion; the lower mold includes lower mold base, lower cushion, outer bushing, bottom mold cushion, guide cylinder, piston, cushion head and bottom mold. The overall structure of the utility model is reasonable and ingenious. The one-time cold extrusion forming of the aluminum mobile phone back cover is realized by a multi-link toggle cold extrusion press. The work efficiency is high and the stability is good. The surface finish of the produced mobile phone back cover is smooth High, uniform and stable dimensional accuracy.

Description

An aluminum mobile phone back cover cold extrusion forming die

technical field

The utility model belongs to the technical field of cold extrusion forming dies, in particular to an aluminum mobile phone back cover cold extrusion forming die.

Background technique

The aluminum mobile phone back cover is used for the back cover of the mobile phone. The aluminum mobile phone back cover is light in weight and flexible, and is one of the important components of the new generation of mobile phones. At present, domestic enterprises produce aluminum mobile phone back covers: one is to process the aluminum sheet through turning, milling, etc., and the other is to use a general punching machine and a hydraulic press to punch and blank the aluminum sheet and then go through multiple stamping and multiple tempering. Stress removal, complex production process, long process, high energy consumption of consumables, low production efficiency, large labor and high labor intensity, high manufacturing cost, and low operational safety factor.

Utility model content

The technical problem to be solved by the utility model is to provide a mold for one-time cold extrusion forming of the aluminum mobile phone back cover by adopting a multi-link toggle type cold extrusion machine.

In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is:

A cold extrusion mold for the back cover of an aluminum mobile phone. The mold is composed of an upper mold and a lower mold facing each other. The upper mold includes an upper mold frame. There is a bushing on the top of the rod seat, and a cylindrical spacer is arranged in the bush, and the cylindrical spacer is connected with the upper mold frame. Pad block, a punch chuck is provided between the side of the punch rod and the punch seat, the upper part of the punch chuck is connected with the upper pad through the upper spring, and the lower part of the punch chuck is connected with the punch seat through the collet nut. Outer connection; the lower mold includes a lower mold frame, a lower cushion block is arranged in the lower mold frame, an outer bushing is arranged on the top of the lower cushion block, a bottom mold cushion block is arranged inside the outer bushing, and a guide is arranged on the top of the outer bushing. Cylinder, the guide cylinder is equipped with a piston, the piston is provided with a cushion head, the part above the guide cylinder is provided with a bottom mold, the two sides of the bottom mold are respectively connected with the lower mold frame by bolts, and the cushion head is located under the bottom mold The part is connected with the piston through the lower spring.

Compared with the prior art, the utility model has the advantages that: the overall structure of the utility model is reasonable and ingenious, and the one-time cold extrusion forming of the aluminum mobile phone back cover is realized through the multi-link toggle-type cold extrusion press, and the working efficiency is high. High, good stability, the surface finish of the produced mobile phone back cover is high, and the dimensional accuracy is uniform and stable.

Description of drawings

Below in conjunction with accompanying drawing and specific embodiment the utility model is described in further detail.

Fig. 1 is a structural representation of the utility model.

In the accompanying drawings: 1. Cylindrical cushion block, 2. Bushing, 3. Upper cushion block, 4. Punch rod seat, 5. Punch rod, 6. Upper spring, 7. Punch rod chuck, 8. Collet nut, 9, bottom mold, 10, pad head, 11, lower spring, 12, guide cylinder, 13, piston, 14, bottom mold pad, 15, outer bushing, 16, lower pad, 17, bolt, 18, upper Formwork, 19, lower formwork.

Detailed ways:

As shown in Figure 1, a cold extrusion mold for the back cover of an aluminum mobile phone is composed of an upper mold and a lower mold facing to each other. The upper mold includes an upper mold frame 18, and the bottom of the upper mold frame 18 is fixed There is a punch seat 4, a bushing 2 is arranged on the top of the punch seat 4, a cylindrical spacer 1 is arranged inside the bush 2, and the cylindrical spacer 1 is connected with the upper mold frame 18, and a punch 5 is arranged in the punch seat 4 There is an upper block 3 between the top of the punch 5 and the inner wall of the punch seat 4, and a punch chuck 7 is arranged between the side of the punch 5 and the punch seat 4, and the upper part of the punch chuck 7 passes through the upper The spring 6 is connected to the upper pad 3, and the lower part of the punch chuck 7 is connected to the outside of the punch seat 4 through the chuck nut 8; The top of the lower cushion block 16 is provided with an outer bushing 15, the outer bushing 15 is provided with a bottom mold cushion block 14, the top of the outer bushing 15 is provided with a guide cylinder 12, and a piston 13 is arranged in the guide cylinder 12, and a piston 13 is arranged inside the piston 13. A pad 10 is provided, the part of the pad 10 located above the guide cylinder 12 is provided with a bottom mold 9, the two sides of the bottom mold 9 are respectively connected with the lower mold frame 19 through bolts 17, and the part of the pad 10 located below the bottom mold 9 passes through The lower spring 11 is connected with the piston 13 .

The steps of using the above mold are as follows:

(1) Install the mold on the mold base of the multi-link toggle-type cold extrusion press;

(2) Matching mold: Make the punch 5 enter the mold cavity of the bottom mold 9, adjust the upper, lower, left and right positions of the bottom mold 9 through the cushion head 10, the lower cushion block 16 and the bolt 17, and use the feeler gauge to detect the bottom mold. Whether the mold cavity clearance of mold 9 meets the requirements;

(3) Mold test: Take a single piece of the aluminum billet that has been stirred and smeared with light zinc stearate powder and put it into the cavity of the bottom mold 9, turn on the cold extrusion machine, and cold extrude it into an aluminum mobile phone Cover, use thickness gauge, vernier caliper and other detection tools to measure its accuracy, then adjust the mold, adjust the bottom thickness by using the adjustment function of the slider stroke of the extruder and the adjustment function of the bolt 17, and adjust the wall thickness by using the pad head 10, the bottom pad Block 16 and bolt 17 and other adjustment functions are repeated many times until the aluminum mobile phone back cover extruded by the continuous test die meets the requirements of the product drawing;

(4) Continuous production can be carried out after adjusting the feeding manipulator.

The mold of the utility model greatly improves the production efficiency of the aluminum mobile phone back cover, and it uses the aluminum billet that has been stirred and smeared with light zinc stearate powder as the raw material to improve the scaling and precipitation of the traditional aluminum billet and facilitate Remove burrs and impurities on the surface of the aluminum billet, while optimizing the elongation and lubricating properties of the aluminum billet, which is beneficial to the plastic deformation during cold extrusion and the mold release of the formed product. The finished product has a high surface finish and uniform and stable dimensional accuracy.

Claims (1)

1. A kind of aluminum mobile phone back cover cold extrusion molding mold, this mold is made up of two parts, the upper mold and the lower mold facing to the setting, it is characterized in that: described upper mold comprises upper mold base, the upper mold base of described upper mold base The bottom is fixed with a punch seat, the top of the punch seat is provided with a bushing, the bush is provided with a cylindrical spacer, the cylindrical spacer is connected with the upper mold frame, and the punch seat is provided with a punch There is an upper pad between the top of the punch and the inner wall of the punch seat, a punch chuck is provided between the side of the punch and the punch seat, and the upper part of the punch chuck passes through the upper The spring is connected with the upper pad, and the lower part of the punch chuck is connected with the outside of the punch seat through the chuck nut; The top of the lower pad is provided with an outer bushing, the bottom mold pad is provided inside the outer bushing, the top of the outer bushing is provided with a guide cylinder, the guide cylinder is provided with a piston, and the piston is provided with a There is a pad head, the part above the guide cylinder is provided with a bottom mold, the two sides of the bottom mold are respectively connected with the lower mold frame by bolts, and the part below the bottom mold is connected with the piston by the lower spring. connect.