CN210453550U

CN210453550U - Mold for processing CD player cover

Info

Publication number: CN210453550U
Application number: CN201921231971.1U
Authority: CN
Inventors: 陈奕超; 贺申虎
Original assignee: Chongqing Hexiufeng Electronic Co Ltd
Current assignee: Chongqing Hexiufeng Electronic Co Ltd
Priority date: 2019-07-31
Filing date: 2019-07-31
Publication date: 2020-05-05
Anticipated expiration: 2029-07-31

Abstract

The utility model relates to the field of injection molding, in particular to a mold for processing a compact disk machine cover, which comprises a mold body, an ejection mechanism and a feeding block, wherein the mold body comprises a lower mold and an upper mold covered on the lower mold, the feeding block vertically runs through the upper mold and is in sliding connection with the upper mold, a cavity is formed among the lower mold, the upper mold and the side wall of the feeding block, the side wall of the cavity is provided with an exhaust port, and an injection molding channel is transversely arranged in the feeding block; the ejection mechanism comprises an ejection piece, a first ejector rod and a second ejector rod which are vertically arranged, the top of the first ejector rod is abutted to the bottom of the feeding block, the second ejector rod can upwards push a workpiece in the cavity, and the ejection piece is used for upwards pushing the first ejector rod and the second ejector rod. The utility model provides a mould can not receive the hindrance of the plastics in the passageway of moulding plastics taking out the work piece.

Description

Mold for processing CD player cover

Technical Field

The utility model relates to a field of moulding plastics especially relates to a mould is used in processing of CD player cover.

Background

In order to improve the functions of a general computer, a larger storage space for the optical disk drive is usually provided on the computer body, and a shielded optical disk drive cover is provided in front of the optical disk drive, and the optical disk drive cover is generally made of plastic injection molding. During injection molding, molten plastic enters a cavity of a mold from an injection channel, the molten plastic is molded when the temperature of the molten plastic is reduced, but when the molten plastic is added into the cavity, in order to ensure that the whole cavity is filled with the molten plastic, the added molten plastic has the excess volume of the cavity, and the excess molten plastic remains in the injection channel.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a take out mould for CD machine cover processing that the work piece can not receive the hindrance of the plastics in the passageway of moulding plastics.

In order to achieve the above purpose, the technical scheme of the utility model is that: the mould for processing the CD player cover comprises a mould body, an ejection mechanism and a feeding block, wherein the mould body comprises a lower mould and an upper mould covered on the lower mould, the feeding block vertically penetrates through the upper mould and is in sliding connection with the upper mould, a cavity is formed among the lower mould, the upper mould and the side wall of the feeding block, an exhaust port is arranged on the side wall of the cavity, and an injection molding channel is transversely arranged in the feeding block; the ejection mechanism comprises an ejection piece, a first ejector rod and a second ejector rod which are vertically arranged, the first ejector rod can upwards push the feeding block, the second ejector rod can upwards push the workpiece in the cavity, and the ejection piece is used for upwards pushing the first ejector rod and the second ejector rod.

The beneficial effect of this scheme does:

1. after a workpiece is molded, the jacking piece pushes the feeding block upwards through the first ejector rod, the feeding block slides upwards relative to the upper die at the moment, the injection molding channel is located in the feeding block and slides upwards along with the feeding block, residual solid plastic in the injection molding channel slides upwards relative to the workpiece in the cavity, and the residual solid plastic is broken at the moment so as to be separated from the workpiece and not to obstruct the demolding of the workpiece.

2. The workpiece is processed by adopting a traditional injection mold, the residual solid plastic in the injection molding channel is adhered to the workpiece, and the residual solid plastic needs to be removed after the workpiece is taken out from the cavity. In the technical scheme, after the solid plastic remained in the injection molding channel is broken, the solid plastic to be removed cannot be remained on the workpiece in a large amount, the subsequent removal difficulty is small, the required time is shorter, and the processing efficiency is improved.

3. Because the cavity is formed between the feeding block and the upper die and between the feeding block and the lower die, one side wall of a workpiece in the cavity is in contact with the side wall of the feeding block, and when the side wall of the feeding block slides upwards, the workpiece is separated from the feeding block, so that when the workpiece is ejected out of the cavity upwards, the workpiece cannot be adhered to the side wall of the feeding block, and the difficulty in ejecting the workpiece is further reduced.

Further, a first ejector rod and a second ejector rod penetrate through the lower die and are in sliding connection with the lower die, a first push plate and a second push plate located below the first push plate are arranged below the lower die, the lower end of the first ejector rod can be pushed upwards by the first push plate, the lower end of the second ejector rod penetrates through the first push plate and can be pushed upwards by the second push plate, and the second ejector rod is in sliding fit with the first push plate; the first push plate is provided with a pull rod which drives the second push plate upwards, the jacking piece penetrates through the first push plate and is detachably connected with the second push plate, and the jacking piece is connected with the first push plate in a sliding mode.

The beneficial effect of this scheme does: when a plurality of first ejector rods and second ejector rods exist, the first push plate and the second push plate can uniformly push all the first ejector rods and the second ejector rods, so that the workpiece is guaranteed to be pushed out of the cavity.

Furthermore, a limiting block for limiting the upward moving distance of the first push plate is arranged above the first push plate.

The beneficial effect of this scheme does: the limiting block can limit the upward movement distance of the first push plate, so that the distance of the workpiece pushed upwards is limited, the workpiece is prevented from being pushed upwards by too large distance while being pushed out of the cavity, and the time required for pushing the workpiece is shortened.

Furthermore, the limiting block is fixed with a buffer piece towards the side wall of the first push plate or the second push plate.

The beneficial effect of this scheme does: the buffer piece has a buffering effect on the contact between the limiting block and the first push plate or the second push plate, and the deformation of the limiting block and the first push plate or the second push plate in contact with the limiting block is avoided.

Further, the buffer member is a rubber sheet.

The beneficial effect of this scheme does: compared with a spring, when the pressure between the limiting block and the first push plate or the second push plate is larger, the rubber sheet cannot lose efficacy, and therefore the buffering effect is kept.

Furthermore, the number of cavities formed among the lower die, the upper die and the side walls of the feeding block is two, and the two cavities are respectively positioned on two sides of the feeding block.

The beneficial effect of this scheme does: both cavities can be used for forming the workpiece during machining, and compared with only one cavity, the workpiece machining efficiency is higher.

Furthermore, the transverse plate is detachably connected to the upper portion of the feeding block, the feeding groove with the diameter larger than that of the injection molding channel is formed in the transverse plate, and the feeding channel communicated with the injection molding channel is vertically arranged at the bottom of the feeding groove.

The beneficial effect of this scheme does: when molten plastic is added into the cavities, the molten plastic only needs to be added into the feeding groove, the molten plastic can automatically flow into the two cavities along the feeding channel under the action of gravity, the molten plastic does not need to be independently injected into the two cavities, and feeding is quicker. And the transverse plate and the upper die are fixed and then pressed on the feeding block, so that the feeding block is prevented from shifting.

Further, the feed block diapire is equipped with the arcwall face, and the passageway of moulding plastics comprises last arcwall face and last mould roof.

The beneficial effect of this scheme does: when the feeding block is pushed upwards, the upper arc-shaped surface is separated from the lower die, and the residual plastic in the injection molding channel is exposed and is convenient to take out.

Further, the feeding block includes last feed block and is located the lower feed block of last feed block below, lower feed block and last feed block sliding connection, and the die cavity comprises last mould, lower mould and last feed block, and the passageway of moulding plastics is located down the feed block, and is equipped with the slip chamber that supplies feed block horizontal slip down on going up mould and the lower mould, and four vertical lateral walls of last feed block are pasted with the slip chamber lateral wall, are fixed with the horizontal impeller that promotes feed block down on going up the mould.

The beneficial effect of this scheme does: when the lower feeding block transversely slides, the injection molding channel is relative to the cavity, the joint of the residual plastic in the injection molding channel and the workpiece in the cavity is broken for the first time, and when the first ejector rod pushes the feeding block upwards, the lower feeding block slides upwards relative to the upper die, so that the injection molding channel further moves upwards relative to the cavity, and the joint of the residual plastic in the injection molding channel and the workpiece in the cavity is broken for the second time, thereby ensuring complete breakage.

Further, the area of the top wall of the first ejector rod is larger than that of the bottom wall of the first ejector rod.

The beneficial effect of this scheme does: the area of first ejector pin upper end is bigger, and is bigger with the area of contact of feeding piece, avoids feeding piece to take place deformation under the pressure effect.

Drawings

Fig. 1 is a schematic perspective view of embodiment 1 of the present invention;

FIG. 2 is a longitudinal cross-sectional view of FIG. 1;

fig. 3 is a longitudinal sectional view of a mold body in embodiment 2 of the present invention;

fig. 4 is a sectional view taken along line a-a of fig. 3.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the device comprises a rack 1, a limiting block 11, a jacking piece 2, a second push plate 21, a first push plate 22, a first ejector rod 23, a second ejector rod 24, a pull rod 25, an anti-falling block 26, a lower die 3, a sliding cavity 31, a tension spring 32, a transverse pushing piece 33, an upper die 4, a transverse plate 5, a feeding groove 51, a feeding channel 52, a feeding block 6, a connecting channel 61, an injection molding channel 62, a lower feeding block 63, an upper feeding block 64, a cavity 7 and a pouring hole 71.

Example 1

The mold for processing the CD player cover comprises a frame 1, a mold body, an ejection mechanism and a feeding block 6, wherein the mold body comprises a lower mold 3 and an upper mold 4 covering the lower mold 3, and the lower mold 3 is fixed on the frame 1 through bolts as shown in figures 1 and 2. Feed block 6 vertically runs through last mould 4, and 3 tops of lower mould are equipped with the recess, and 6 lower extremes of feed block are located the recess, and the bottom surface of feed block about with the lateral wall respectively with the bottom surface of recess about with the lateral wall paste mutually, about the feed block 6 lateral wall and lower mould 3, go up and form the die cavity 7 of two U-shaped between the mould 4 respectively, two die cavities 7 are located the left and right sides of feed block 6 respectively, and die cavity 7 roof is equipped with the gas vent. The lower end of the feeding block 6 is transversely provided with two injection molding channels 62, and the two injection molding channels 62 are respectively communicated with the bottoms of the two cavities 7. The vertical connecting channel 61 that is equipped with and moulds plastics the passageway 62 and communicate with two on the feed block 6, and the top of feed block 6 can be dismantled through the bolt and be connected with diaphragm 5, and diaphragm 5 transversely sets up, and the distance of diaphragm 5 bottom and recess bottom surface equals the height of feed block 6, and diaphragm 5 presses feed block 6 on last mould 4, prevents feed block 6 skew. The cross plate 5 is provided with a feed groove 51 with a diameter larger than that of the injection molding channel 62, and the bottom of the feed groove 51 is vertically provided with a feed channel 52 communicated with the connecting channel 61, namely, the feed channel 52 is communicated with the injection molding channel 62 through the connecting channel 61.

The ejection mechanism comprises an ejection piece 2, a plurality of first ejector rods 23 and a plurality of second ejector rods 24 which are vertically arranged, a first push plate 22 and a second push plate 21 positioned below the first push plate 22 are transversely arranged below the lower die 3, the width of the second push plate 21 is larger than that of the first push plate 22, and the first push plate 22 is arranged on the second push plate 21. The pull rod 25 is vertically arranged on the first push plate 22, the pull rod 25 in the embodiment vertically penetrates through the first push plate 22 and is in threaded connection with the second push plate 21, the pull rod 25 is in clearance fit with the first push plate 22, the distance between the upper end of the pull rod 25 and the bottom of the first push plate 22 is larger than the thickness of the first push plate 22, and the anti-falling block 26 with the diameter larger than that of the pull rod 25 is welded at the upper end of the pull rod 25. In specific implementation, the pull rod 25 can also penetrate through the second push plate 21 and be in threaded connection with the first push plate 22, and at this time, the distance between the bottom of the pull rod 25 and the top of the second push plate 21 is greater than the thickness of the second push plate 21. First ejector pin 23 lower extreme and first push pedal 22 screw-thread fit, first ejector pin 23 upper end upwards runs through last mould 4 to offset with 6 diapalls of feeding block, upwards promote feeding block 6 during first ejector pin 23 upward movement promptly, first ejector pin 23 upper end area is greater than the lower extreme area, avoids feeding block 6 to take place deformation.

The lower end of the second ejector rod 24 penetrates through the first push plate 22 and is in threaded fit with the second push plate 21, the second ejector rod 24 is in clearance fit with the first push plate 22, and the upper end of the second ejector rod 24 is as high as the top of the lower cambered surface of the cavity 7. The jacking member 2 in this embodiment is a hydraulic ram, a push rod of the hydraulic ram upwardly penetrates through the second push plate 21 and is fixed with the first push plate 22 by a bolt, and the push rod of the hydraulic ram is in clearance fit with the second push plate 21. The stopper 11 of welding in frame 1 is equipped with above the second push pedal 21, and stopper 11 bottom is fixed with the bolster through the viscose, and the bolster in this embodiment is the sheet rubber of butadiene acrylonitrile rubber material, and during the concrete implementation, stopper 11 in this embodiment also can be located directly over first push pedal 22, perhaps adopts the spring as the bolster, when selecting the spring as the bolster, the spring both ends weld respectively at stopper 11 and first push pedal 22 or second push pedal 21 top.

The specific implementation process is as follows:

during injection molding, molten plastic is manually added into the feeding groove 51, the molten plastic enters the two cavities 7 along the feeding channel 52, the connecting channel 61 and the injection channel 62 under the action of self gravity, gas in the cavities 7 is exhausted from the exhaust port, and redundant molten plastic remains in the two injection channels 62. Of course, in order to accelerate the speed of the molten plastic entering the cavity 7, an external negative pressure device (such as an air pump) may be connected to the exhaust port to form a negative pressure in the cavity 7, and the negative pressure device is closed when the cavity 7 is filled with the molten plastic.

As the plastic in the mold cavity 7 cools and forms, the plastic in the injection channel 62 also cools and forms. Before the workpiece needs to be taken out, the bolt for fixing the transverse plate 5 on the upper die 4 is manually taken down, and the transverse plate 5 is pushed upwards. Then the jacking piece 2 is started, the jacking piece 2 pushes the first push plate 22 upwards, at the moment, the first push plate 22 slides upwards relative to the pull rod 25, the first ejector rod 23 pushes the feeding block 6 upwards, and the residual plastic in the injection molding channel 62 is broken off so as to be separated from the workpiece, and the left side wall and the right side wall of the feeding block 6 are separated from the workpiece. When the top of the first push plate 22 contacts with the top of the pull rod 25, the first push plate 22 drives the pull rod 25 upwards, and the pull rod 25 drives the second push plate 21 upwards, so that the second ejector rod 24 pushes the workpiece out of the cavity 7 upwards. When the second push plate 21 is contacted with the limiting block 11, the second push plate is limited and cannot move upwards continuously, the hydraulic ram is manually closed, the workpiece is taken out of the cavity 7, and the residual plastic in the injection molding channel 62 is transversely pushed, so that the residual plastic falls out of the injection molding channel 62. Then the hydraulic jack is started again, and after the first push plate 22 and the second push plate 21 are reset, the hydraulic jack is closed, and the feeding block 6 is reset. And finally, manually moving the upper die 4 downwards, and fixing the transverse plate 5 on the upper die 4 again to process the next workpiece.

Example 2

On the basis of embodiment 1, as shown in fig. 3, the feed block in this embodiment includes an upper feed block 64 and a lower feed block 63 located below the upper feed block 64, and the lower feed block 63 can slide back and forth relative to the upper feed block 64. The lower feeding block 63 is located below the cavities 7, the two cavities 7 are composed of left and right side walls of the upper die 4, the lower die 3 and the upper feeding block 64, as shown in fig. 4, a sliding cavity 31 for the lower feeding block 63 to move back and forth is arranged on the upper die 4 and the lower die 3, a transverse pushing member 33 is fixed on the lower die 3 through bolts, a hydraulic ram is selected as the transverse pushing member 33 in the embodiment, a pushing rod of the transverse pushing member 33 transversely penetrates through the lower die 3 and abuts against the upper end of the lower feeding block 63, a tension spring 32 is arranged in the sliding cavity 31, one end of the tension spring 32 is welded on the side wall of the sliding cavity 31, and the other end of the. As shown in fig. 3, the bottom of the lower feeding block 63 is transversely provided with an upper arc surface, the injection channel 62 is formed by the upper arc surface and the top wall of the lower die 3, a pouring hole 71 is vertically arranged below the cavity 7, and when the lower end of the lower feeding block 63 abuts against the side wall of the lower end of the sliding cavity 31, the injection channel 62 is communicated with the pouring hole 71.

After the workpiece in this embodiment is formed, before the bolt for fixing the transverse plate 5 on the upper die 4 is manually removed and the transverse plate 5 is pushed upward, as shown in fig. 4, the transverse pushing member 33 is first started to retract the push rod of the transverse pushing member 33, the lower feeding block 63 slides along the sliding cavity 31 under the action of the tension spring 32, the plastic remaining in the injection molding channel 62 is broken for the first time, as shown in fig. 3, then the bolt for fixing the transverse plate 5 on the upper die 4 is removed according to the steps in embodiment 1, and the lower feeding block 63 and the upper feeding block 64 are pushed upward through the jacking member 2, at this time, the plastic remaining in the injection molding channel 62 is broken for the second time, so that the plastic is completely disconnected from the workpiece, and adverse effects on the removal of the workpiece are avoided.

In the mold of this embodiment, since the injection molding channel 62 is composed of the upper arc surface and the top surface of the lower mold 3, when the first ejector rod 23 jacks up the lower feeding block 63 and the upper feeding block 64, the lower arc surface is separated from the lower mold 3, and the plastic remaining in the injection molding channel 62 is more conveniently taken out.

When the next optical disk drive cover is formed, after the transverse plate 5 is fixed on the upper die 4, the transverse pushing member 33 is manually started, the push rod of the transverse pushing member 3 is extended out, the lower feeding block 63 is pushed to the side far away from the tension spring 32 until the lower feeding block 63 abuts against the side wall of the sliding cavity 31 far away from the tension spring 32, the transverse pushing member 33 is closed, and at this time, the injection molding channel 62 is communicated with the pouring hole 71.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, without departing from the concept of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the present invention and the practicability of the patent. The technology, shape and construction parts which are not described in the present invention are all known technology.

Claims

1. Mould is used in processing of CD ROM machine lid, its characterized in that: the injection molding device comprises a mold body, an ejection mechanism and a feeding block, wherein the mold body comprises a lower mold and an upper mold covered on the lower mold, the feeding block vertically penetrates through the upper mold and is in sliding connection with the upper mold, a cavity is formed among the lower mold, the upper mold and the side wall of the feeding block, an exhaust port is formed in the side wall of the cavity, and an injection molding channel is transversely arranged in the feeding block; the ejection mechanism comprises an ejection piece, a first ejector rod and a second ejector rod, wherein the first ejector rod and the second ejector rod are vertically arranged, the top of the first ejector rod is abutted to the bottom of the feeding block, the second ejector rod can upwards push a workpiece in the cavity, and the ejection piece is used for upwards pushing the first ejector rod and the second ejector rod.

2. The mold for machining a disc player cover according to claim 1, wherein: the first ejector rod and the second ejector rod penetrate through the lower die and are connected with the lower die in a sliding mode, a first push plate and a second push plate located below the first push plate are arranged below the lower die, the lower end of the first ejector rod can be pushed upwards by the first push plate, the lower end of the second ejector rod penetrates through the first push plate and can be pushed upwards by the second push plate, and the second ejector rod is in sliding fit with the first push plate; the first push plate is provided with a pull rod which drives the second push plate upwards, the jacking piece penetrates through the first push plate and is detachably connected with the second push plate, and the jacking piece is connected with the first push plate in a sliding mode.

3. The mold for machining a disc player cover according to claim 2, wherein: and a limiting block for limiting the upward moving distance of the first push plate is arranged above the first push plate.

4. The mold for cover working of optical disc player according to claim 3, wherein: the limiting block is fixed with a buffer piece towards the side wall of the first push plate or the second push plate.

5. The mold for cover working of optical disc player according to claim 4, wherein: the buffer piece is a rubber sheet.

6. The mold for machining a disc player cover according to claim 1, wherein: the number of cavities formed among the lower die, the upper die and the side walls of the feeding block is two, and the two cavities are respectively positioned on two sides of the feeding block.

7. The mold for cover working of optical disc player according to claim 6, wherein: the feeding block top can be dismantled and be connected with the diaphragm, be equipped with the feed chute that the diameter is greater than the passageway of moulding plastics on the diaphragm, the vertical feed channel who communicates with the passageway of moulding plastics that is equipped with in feed chute bottom.

8. The mold for cover working of optical disc player according to claim 7, wherein: the feed block diapire is equipped with the arcwall face, and the passageway of moulding plastics comprises last arcwall face and last mould roof.

9. The mold for cover working of optical disc player according to claim 8, wherein: the feeding block comprises an upper feeding block and a lower feeding block located below the upper feeding block, the lower feeding block is connected with the upper feeding block in a sliding mode, the cavity is composed of an upper die, a lower die and an upper feeding block, the injection molding channel is located on the lower feeding block, a sliding cavity for the lower feeding block to slide transversely is formed in the upper die and the lower die, four vertical side walls of the upper feeding block are attached to the side walls of the sliding cavity, and a transverse pushing piece for pushing the lower feeding block is fixed to the upper die.

10. The mold for machining a disc player cover according to claim 9, wherein: the area of the top wall of the first ejector rod is larger than that of the bottom wall of the first ejector rod.