Novel mold for producing plastic ornament in automobile

Abstract

The utility model relates to the technical field of injection molding, in particular to a novel mold for producing plastic ornaments in an automobile, which comprises a panel, an upper mold, a lower mold, mold feet and a bottom plate which are arranged in sequence, and further comprises a fixing plate and a driving part, the telescopic shaft penetrates through one end of the fixed plate and is fixedly connected with one side of the bottom plate far away from the mold feet; a clamping hole is formed in the telescopic shaft in the axial direction, the clamping piece is installed on the fixing plate, and the free end of the clamping piece can stretch into the clamping hole and abut against the bottom of the clamping hole. By the adoption of the scheme, the technical problem that during injection molding, the product quality is affected due to the fact that the injection mold retreats due to overlarge injection molding pressure can be solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of injection molding, in particular to a novel mould for producing plastic decorative parts in automobile. BACKGROUND

[0002] With the development of plastic industry, the application of plastic products has diversified in various fields, and the product modeling is more complex, so there are higher requirements for the precision of the mold and the stability of the size. The traditional injection mold lacks a self-locking mechanism, and usually relies on its own oil cylinder for locking during injection. During the injection process, the injection pressure is applied instantaneously, which may cause the injection mold to retreat, resulting in gaps in the mold cavity, seriously affecting the normal molding of the product, and causing phenomena such as multiple glues, beryllium edges and flash on the injection molded product, resulting in low quality of the injection molded product. SUMMARY

[0003] The utility model intends to provide a novel mould for producing plastic decorative parts in automobile, which can solve the technical problem of injection mold retreat caused by excessive injection pressure during injection, affecting product quality.

[0004] The utility model provides the following basic scheme:

[0005] A novel mould for producing plastic decorative parts in automobile, comprising a panel, an upper mold, a lower mold, a mold foot and a bottom plate arranged in sequence, further comprising a fixing plate and a driving member, the driving member comprising a telescopic shaft, the telescopic shaft passing through the fixing plate, one end of the telescopic shaft passing through the fixing plate being fixedly connected with the bottom plate away from the mold foot;

[0006] A locking hole is formed in the telescopic shaft in the axial direction, and a locking member is installed on the fixing plate, the free end of the locking member being capable of extending into the locking hole and abutting against the bottom of the locking hole.

[0007] Further, the locking member comprises a telescopic device and a movable block in sliding connection with the telescopic device, the telescopic direction of the telescopic device being perpendicular to the moving direction of the movable block, the telescopic direction of the telescopic device being parallel to the telescopic direction of the telescopic shaft, and the end of the movable block away from the telescopic device being capable of extending into the locking hole and abutting against the bottom of the locking hole.

[0008] Further, the free end of the telescopic device and the contact surface of the movable block are provided with inclined surfaces, and the free end of the telescopic device and the end of the movable block away from the locking hole are provided with a guide groove and a guide protrusion for cooperation.

[0009] Further, the guide groove is formed in the inclined surface of the movable block, and the guide protrusion is formed in the inclined surface of the telescopic device, and the cross-sectional shapes of the guide groove and the guide protrusion are the same.

[0010] Further, the two sides of the guide groove are further provided with a blocking portion for blocking the guide protrusion from coming out.

[0011] Further, the side of the fixed plate facing the base plate is provided with a top block, and the base plate is provided with a through hole through which the top block passes;

[0012] Further, the side of the fixed plate facing the base plate is provided with a top block, and the base plate is provided with a through hole through which the top block passes;

[0013] Further, the side of the fixed plate facing the base plate is provided with a top block, and the base plate is provided with a through hole through which the top block passes;

[0014] The beneficial effects of the basic scheme are:

[0015] The setting of the panel, the upper mold, the lower mold, the mold foot and the base plate realizes injection molding of the plastic decoration part, the setting of the fixed plate limits the moving position of the lower mold when the mold is opened and closed, and guides the extension and retraction of the telescopic shaft, so that the lower mold can stably open and close the mold. The setting of the telescopic shaft drives the base plate to move, thereby driving the lower mold to move, thereby realizing the opening and closing of the mold. The setting of the locking piece is used in cooperation with the locking hole, and when the free end of the locking piece extends into the locking hole, the telescopic shaft is blocked, so that the telescopic shaft cannot move, thereby avoiding the phenomenon that the injection mold retreats due to the instantaneous pressure increase of injection pressure. Compared with the prior art, in addition to the retreat prevention function of the telescopic shaft itself, the locking piece is further used in cooperation with the locking hole to further improve the retreat prevention effect of the injection mold and effectively avoid the influence of mold retreat on product quality. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structure schematic view of an embodiment of the novel mold for producing plastic decoration parts in automobiles;

[0017] Figure 2 It is a structure schematic view of an embodiment of the novel mold for producing plastic decoration parts in automobiles from another angle. DETAILED DESCRIPTION

[0018] The following will be further described in detail through specific embodiments:

[0019] The reference signs in the drawings of the specification include: panel 1, upper mold 2, lower mold 3, mold foot 4, base plate 5, guide column 6, top-up block 7, top needle guide 8, top needle 9, fixed plate 10, telescopic shaft 11, telescopic device 12, movable block 13, top block 14.

[0020] EMBODIMENT

[0021] A novel mold for producing plastic decoration parts in automobiles, as shown in the accompanying drawings Figure 1 , 2As shown, it comprises a panel 1, an upper mold 2, a lower mold 3, a mold foot 4 and a bottom plate 5 arranged in sequence, the panel 1 is provided with an injection port for injecting plastic liquid. The upper mold 2 is fixedly connected with the panel 1, and the upper mold 2 and the panel 1 are both provided with positioning holes, the number of the positioning blocks is four, the four positioning holes are distributed on the four corners of the upper mold 2 and the panel 1, the positioning holes on the upper mold 2 correspond to the positioning holes on the panel 1 one by one, and are communicated respectively. A guide sleeve is arranged in the positioning hole, and the guide sleeve is in interference fit with the positioning hole. In this embodiment, the upper mold 2 is fixedly connected with the panel 1 by screws.

[0022] A plurality of guide columns 6 are arranged on one side of the lower mold 3, the number of the guide columns 6 is the same as that of the positioning holes, and the guide columns 6 correspond to the positioning holes one by one, the guide columns 6 pass through the guide sleeves, and the guide columns 6 are used in cooperation with the guide sleeves. A plurality of mold feet 4 are arranged on the other side of the lower mold 3, the number of the mold feet 4 is four, and the four mold feet 4 are distributed on the four corners of the lower mold 3. In this embodiment, the guide columns 6 and the mold feet 4 are respectively fixedly connected with the lower mold 3 by screws. One end of the mold foot 4 away from the lower mold 3 is fixedly connected with the bottom plate 5, and in this embodiment, the mold foot 4 and the bottom plate 5 are fixedly connected by screws. The arrangement of the guide columns 6 provides guidance and limiting for the movement of the lower mold 3, and improves the clamping accuracy of the upper mold 2 and the lower mold 3.

[0023] It also comprises a jacking block 7 and a ejector rod 8, the jacking block 7 is arranged between the lower mold 3 and the bottom plate 5, the other side of the jacking block 7 is provided with an ejector pin 9, the free end of the ejector pin 9 can pass through the lower mold 3, one end of the ejector rod 8 is fixedly connected with the jacking block 7, and the other end passes through the lower mold 3. Specifically, the opposite side of the upper mold 2 and the lower mold 3 is provided with a notch matching the shape of the plastic ornament, when the upper mold 2 and the lower mold 3 abut, the space formed by the notch is the cavity for injection. The free end of the ejector pin 9 can pass through the notch on the lower mold 3, the free end of the ejector rod 8 can pass through the lower mold 3 towards the side of the upper mold 2, the area through which the ejector rod 8 passes is the end face of the lower mold 3 abutting with the upper mold 2, that is, the lower mold 3 is provided with a through hole for the ejector rod 8 and the ejector pin 9 to pass through. In this embodiment, the number of the ejector rod 8 is two, the ejector rod 8 is located on the opposite sides of the notch, and the ejector rod 8 is fixedly connected with the jacking block 7 by screws. The number of the ejector pin 9 is multiple, and the skilled in the art can distribute the ejector pin 9 according to the shape of the plastic ornament, and the ejector pin 9 is integrally formed with the jacking block 7. The arrangement of the ejector rod 8 provides guidance and limiting for the movement of the jacking block 7, so that the ejector pin 9 can move at the specified position, and then the plastic ornament can be quickly demolded.

[0024] The fixed plate 10 and the driving member are further included, the driving member includes a telescopic shaft 11, the telescopic shaft 11 passes through the fixed plate 10, and one end of the telescopic shaft 11 is fixedly connected to the side of the bottom plate 5 away from the die foot 4. The side of the fixed plate 10 facing the bottom plate 5 is provided with a top block 14, the bottom plate 5 is provided with a through hole for the top block 14 to pass through, one end of the top block 14 can pass through the through hole, and the end passing through the through hole can abut against the side of the jacking block 7 away from the lower die 3. In the embodiment, the driving member is an oil cylinder, the piston rod of the oil cylinder is coaxially connected with the telescopic shaft 11, the fixed plate 10 is provided with a mounting hole, the mounting hole is provided with a guide sleeve in interference fit, the telescopic shaft 11 passes through the guide sleeve and is fixedly connected to the bottom plate 5 through screws. The top block 14 is fixedly connected to the fixed plate 10 through screws.

[0025] The telescopic shaft 11 is provided with a clamping hole in the axial direction, and a clamping member mounted on the fixed plate 10, the free end of the clamping member can extend into the clamping hole and abut against the bottom of the clamping hole. Specifically, the clamping member includes a telescopic device 12 and a movable block 13 in sliding connection with the telescopic device 12, the telescopic direction of the telescopic device 12 is perpendicular to the moving direction of the movable block 13, the telescopic direction of the telescopic device 12 is parallel to the telescopic direction of the telescopic shaft 11, and the end of the movable block 13 away from the telescopic device 12 can extend into the clamping hole and abut against the bottom of the clamping hole. The free end of the telescopic device 12 and the contact surface of the movable block 13 are both provided with inclined surfaces, and the free end of the telescopic device 12 and the end of the movable block 13 away from the clamping hole are provided with a guide groove and a guide protrusion for cooperation. In the embodiment, the telescopic device 12 is an oil cylinder, the oil cylinder is mounted on the fixed plate 10 through screws, the piston rod of the oil cylinder is coaxially connected with a telescopic rod, and the free end of the telescopic rod is in sliding connection with the movable block 13.

[0026] The guide groove is provided on the inclined surface of the movable block 13, the guide protrusion is provided on the inclined surface of the telescopic device 12, the cross-sectional shape of the guide groove and the guide protrusion is the same, and the two sides of the guide groove are further provided with blocking portions for blocking the guide protrusion from coming out. The opening and closing direction of the upper die 2 and the lower die 3 is the horizontal direction, the telescopic device 12 is located above the telescopic shaft 11, the inclined surface of the telescopic device 12 is arranged from high to low and inclined from the bottom plate 5 to the fixed plate 10, the guide protrusion is arranged on the inclined surface of the telescopic device 12, and the inclination direction of the guide protrusion is the same as that of the inclined surface of the telescopic device 12. The inclination direction of the inclined surface of the movable block 13 is the same as that of the inclined surface of the telescopic device 12, and the guide groove is provided on the inclined surface of the movable block 13, and the inclination direction of the guide groove is the same as that of the inclined surface of the telescopic device 12. The two sides of the guide groove are provided with blocking portions, the guide protrusion is located in the guide groove and is in sliding connection with the guide groove. In the embodiment, the blocking portions and the movable block 13 are integrally formed, and the guide protrusion and the telescopic rod are integrally formed.

[0027] In use, the driving member controls the axial movement of the lower mold 3 along the telescopic shaft 11, the lower mold 3 and the upper mold 2 are in close contact, the mold closing of the injection mold is completed, the injection molding machine is controlled to perform injection molding, after the plastic liquid in the cavity is cooled, the driving member controls the reverse axial movement of the lower mold 3 along the telescopic shaft 11 to reset, in the resetting process, the top block 14 passes through the through hole on the bottom plate 5 and abuts against the lifting block 7, and the lifting block 7 moves relative to the upper mold 2, so that the ejector pin 9 moves relative to the upper mold 2, and the demolding of the plastic decoration part is realized. During the injection molding process, the end of the movable block 13 away from the telescopic device 12 is located in the locking hole, at this time the telescopic shaft 11 cannot be telescoped. When the mold is opened, the telescopic device 12 is telescoped to drive the guide protrusion to slide on the guide groove, so that the movable block 13 leaves the locking hole, at this time the telescopic shaft 11 can be freely telescoped.

[0028] Compared with the prior art, in addition to the retreat prevention function of the telescopic shaft 11 itself, the locking member is arranged to cooperate with the locking hole, and the retreat prevention effect of the injection mold is further improved, and the influence of mold retreat on product quality is effectively avoided.

[0029] The above is only an embodiment of the present application, and the specific structure and characteristics of the scheme are not described in detail, and the ordinary technical personnel in the art knows all the ordinary technical knowledge in the technical field of the present application before the application date or the priority date, can know all the prior art in the field, and has the ability to apply conventional experimental means before the date, and the ordinary technical personnel in the art can improve and implement the scheme under the inspiration of the present application, some typical known structures or known methods should not be an obstacle for the ordinary technical personnel to implement the present application. It should be pointed out that for those skilled in the art, without departing from the structure of the present application, a number of modifications and improvements can be made, which should also be considered as the protection scope of the present application, which will not affect the effect and practicality of the present application. The protection scope of the present application should be subject to the content of its claims, and the specific implementation mode and the like in the specification can be used to explain the content of the claims.

Claims

1. A novel mold for producing automotive interior plastic trim parts, comprising a panel, an upper mold, a lower mold, mold feet, and a base plate arranged sequentially, characterized in that: The fixed plate and the driving member are further included, the driving member includes a telescopic shaft, the telescopic shaft passes through the fixed plate, and one end of the telescopic shaft passing through the fixed plate is fixedly connected to the bottom plate away from the side of the die foot; The telescopic shaft is provided with a clamping hole in the axial direction, and the fixed plate is further provided with a clamping member, and the free end of the clamping member can extend into the clamping hole and abut against the bottom of the clamping hole.

2. A novel mould for producing plastic interior trim parts for automobiles as claimed in claim 1, wherein: The clamping member includes a telescopic device and a movable block in sliding connection with the telescopic device, the telescopic direction of the telescopic device is perpendicular to the moving direction of the movable block, the telescopic direction of the telescopic device is parallel to the telescopic direction of the telescopic shaft, and the end of the movable block away from the telescopic device can extend into the clamping hole and abut against the bottom of the clamping hole.

3. A novel mould for producing plastic interior trim parts for automobiles as claimed in claim 2, wherein: The free end of the telescopic device and the contact surface of the movable block are both provided with inclined surfaces, and the free end of the telescopic device and the end of the movable block away from the clamping hole are provided with a guide groove and a guide protrusion for cooperation.

4. A novel mould for producing plastic interior trim parts for automobiles as claimed in claim 3 wherein: The guide groove is arranged on the inclined surface of the movable block, and the guide protrusion is arranged on the inclined surface of the telescopic device.

5. A novel mould for producing plastic interior trim parts for automobiles as claimed in claim 4 wherein: The guide groove and the guide protrusion have the same cross-sectional shape.

6. A novel mould for producing plastic interior trim parts for automobiles as claimed in claim 5 wherein: The two sides of the guide groove are further provided with a blocking portion for blocking the guide protrusion from being pulled out. The side of the fixed plate facing the bottom plate is provided with a top block, and the bottom plate is provided with a through hole through which the top block passes.

7. A novel mould for producing plastic interior trim parts for automobiles as claimed in claim 6 wherein: A jacking block is further included, the jacking block is arranged between the lower die and the bottom plate, one side of the jacking block can abut against the end of the top block passing through the through hole, the other side of the jacking block is provided with a thimble, and the free end of the thimble can pass through the lower die. A thimble guide rod is further included, one end of the thimble guide rod is fixedly connected to the jacking block, and the other end of the thimble guide rod passes through the lower die.

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