Car lampshade shell forming die

Abstract

The utility model relates to the technical field of forming dies, in particular to a car lampshade shell forming die which comprises a fixed die bottom plate, two base plates, a fixed die, a movable die and a movable die bottom plate which are sequentially arranged. The two base plates are arranged between the fixed mold bottom plate and the fixed mold to form a jacking space; an ejection mechanism is arranged in the jacking space and comprises a movable plate and a plurality of ejection rods, and ejection heads of the ejection rods penetrate through the fixed mold to be attached to the forming surface; the ejector rod comprises a fixed rod body and a movable rod body, the fixed rod body is arranged on the movable plate, a positioning hole is formed in the movable rod body, a floating jacking assembly is arranged above the movable plate and comprises a driving plate and a plurality of floating jacking seats, and each floating jacking seat comprises a first sleeve, a second sleeve and a spring arranged between the first sleeve and the second sleeve. Floating force can be applied in the initial demolding stage through the floating jacking assembly, it is ensured that the jacking head makes uniform contact with the surface of a product in the initial stage, and product deformation or incomplete jacking caused by uneven distribution of jacking force is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to forming die technical field especially relates to a car lamp cover shell forming die. BACKGROUND

[0002] The automobile lamp shell is a plastic product, in order to reduce production cost, improve production efficiency, therefore selects injection mold to produce the automobile lamp shell. Injection mold is composed of two parts of movable die and fixed die, movable die is installed on the moving template of injection molding machine, fixed die is installed on the fixed template of injection molding machine, movable die and fixed die are closed to constitute the gating system and cavity when injection molding, movable die and fixed die are separated to take out the plastic product when opening the mold.

[0003] However, when the ejection of the formed lamp shell from the fixed template is carried out, the hard ejection of the ejector rod along the edge of the lamp shell is easy to cause the risk of breakage or deformation of the edge of the lamp shell. UTILITY MODEL CONTENT

[0004] The utility model solves the technical problems that: provide a car lamp cover shell forming die, effectively solve the problem in the background art.

[0005] In order to achieve the above purpose, the utility model adopts the technical scheme of: a car lamp cover shell forming die, comprising: fixed die bottom plate, two gaskets, fixed die, movable die and movable die bottom plate arranged in sequence;

[0006] Two gaskets are arranged between the fixed die bottom plate and the fixed die to form a jacking space;

[0007] A ejection mechanism is arranged in the jacking space, and the ejection mechanism comprises a moving plate and a plurality of ejector rods arranged on the moving plate, the heads of the plurality of ejector rods are in close contact with the molding surface inside the fixed die through the fixed die;

[0008] Among them, the ejector rod comprises a fixed rod body and a movable rod body, the fixed rod body is arranged on the moving plate, the movable rod body is provided with a positioning hole for embedding the fixed rod body, and a floating jacking assembly is arranged above the moving plate, the floating jacking assembly comprises a driving plate and a plurality of floating top seats, the floating top seat comprises a first sleeve and a second sleeve sleeved on the fixed rod body, and a spring arranged between the first sleeve and the second sleeve.

[0009] Further, the head of the ejector rod is flat.

[0010] Further, a plurality of guide columns are arranged between the fixed die bottom plate and the fixed die.

[0011] Further, the moving plate comprises a push plate and a fixed plate arranged in layers, and the fixed rod body is provided with a boss at one end thereof, and the fixed plate is provided with a groove for embedding the boss on the side facing the push plate.

[0012] Further, the distance between the second sleeve and the driving plate is less than the distance between the driving plate and the movable rod body.

[0013] Further, the movable rod body comprises a top head and a guide shaft arranged below the top head.

[0014] The fixed mold is provided with a first hole body and a second hole body for embedding the guide shaft and the top head.

[0015] Further, the guide shaft is provided with a guide hole for embedding the fixed rod body along the axial direction.

[0016] Further, there is an annular gap between the guide shaft and the first hole body.

[0017] Further, the fixed mold is provided with a plurality of sets of heat dissipation hole systems corresponding to the mold cavity.

[0018] The heat dissipation hole system comprises a first heat dissipation hole and a plurality of second heat dissipation holes arranged along the axis of the first heat dissipation hole, the first heat dissipation hole is arranged through the fixed mold along the horizontal direction, the second heat dissipation hole is arranged along the vertical direction, and the end away from the mold cavity is arranged through.

[0019] Further, a plurality of the second heat dissipation holes are arranged in a cross shape with the first heat dissipation hole.

[0020] The beneficial effects of the utility model are as follows: the utility model is provided with a floating lifting assembly, which can apply a floating force in the initial demolding stage, ensure that the top head uniformly contacts the product surface in the initial stage, avoid product deformation or incomplete ejection caused by uneven distribution of the ejection force, and make the ejection action more gentle due to the design of the floating force, reduce the risk of scratching, deformation or ejection of the product surface, and can more effectively separate the product from the mold cavity and reduce the possibility of product sticking to the mold. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are only some embodiments described in the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0022] Figure 1This is a schematic diagram of the structure of the headlight cover molding mold in the embodiment of this utility model;

[0023] Figure 2 This is a schematic diagram showing the distribution of the top rods in an embodiment of this utility model;

[0024] Figure 3 These are a top view and a partially enlarged view of the mold in an embodiment of this utility model;

[0025] Figure 4 for Figure 3 Sectional view of section AA;

[0026] Figure 5 for Figure 4 A magnified view of section B;

[0027] Figure 6 for Figure 4 The CC section sectional view.

[0028] Reference numerals: 1. Fixed mold base plate; 2. Pad plate; 3. Fixed mold; 31. First hole; 32. Second hole; 33. First heat dissipation hole; 34. Second heat dissipation hole; 4. Moving mold; 5. Moving mold base plate; 6. Ejection mechanism; 61. Moving plate; 611. Push plate; 612. Fixed plate; 62. Ejector rod; 621. Fixed rod; 622. Movable rod; 622a. Ejector head; 622b. Guide shaft; 7. Floating lifting assembly; 71. Drive plate; 72. Floating top seat; 721. First sleeve; 722. Second sleeve; 723. Spring; 8. Guide column. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0030] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0032] like Figures 1 to 6 The headlight cover molding mold shown includes: a fixed mold base plate 1, two pads 2, a fixed mold 3, a moving mold 4, and a moving mold base plate 5 arranged in sequence; the two pads 2 are arranged between the fixed mold base plate 1 and the fixed mold 3 to form a lifting space.

[0033] An ejection mechanism 6 is provided in the lifting space. The ejection mechanism 6 includes a movable plate 61 and a plurality of ejector rods 62 disposed on the movable plate 61. The ejector heads 622a of the plurality of ejector rods 62 pass through the fixed mold 3 and fit against the forming surface inside the fixed mold 3.

[0034] The top rod 62 includes a fixed rod body 621 and a movable rod body 622. The fixed rod body 621 is mounted on the movable plate 61, and the movable rod body 622 has a positioning hole for the fixed rod body 621 to be inserted. A floating lifting assembly 7 is mounted above the movable plate 61. The floating lifting assembly 7 includes a drive plate 71 and several floating top seats 72. Each floating top seat 72 includes a first sleeve 721 and a second sleeve 722 sleeved on the fixed rod body 621, and a spring 723 disposed between the first sleeve 721 and the second sleeve 722.

[0035] In a preferred embodiment of this utility model, the fixed rod 621 and the movable rod 622 are coaxially arranged, while the second sleeve 722 and the first sleeve 721 are coaxially arranged with the fixed rod 621, and the gap between the top 622a of the movable rod 622 and the mold cavity meets the injection molding requirements.

[0036] The specific implementation process is as follows: when the mold is closed, the moving plate 61 drives several ejector pins 62, so that the ejector pins 622a are in contact with the molding surface; after injection molding is completed, the mold is opened, and the driving plate 71 drives the floating ejector pin 72 to move toward the fixed mold 3. When the floating ejector pin 72 contacts the movable rod 622, the driving plate 71 continues to rise. The driving plate 71 causes the first sleeve 721 to move along the axis. Through the spring 723, the second sleeve 722 is subjected to a floating force on the movable rod 622. The floating force lifts the molded product from the molding surface a certain distance, realizing the initial separation of the product from the mold cavity. At this time, the moving plate 61 rises again, and the movable rod 622 is continuously lifted by the fixed rod 621 to achieve complete demolding.

[0037] The utility model discloses a setting of floating jacking assembly 7 can apply floating force in initial demolding stage, ensure that the head 622a is in initial stage even contact product surface, avoid the product deformation or incomplete ejection caused by uneven distribution of ejection force, and the design of floating force makes the ejection action more soft, reduces the scratch, deformation or top wear risk to product surface, can more effectively separate the product from the mold cavity, reduces the possibility of product sticking to the mold.

[0038] In the preferred embodiment of the utility model, the head 622a of the ejector rod 62 is flat. The flat head 622a design can better fit the narrow area of the car lamp shell edge, ensure uniform force on the product during demolding, reduce the resistance during demolding, and speed up the demolding speed, thereby improving production efficiency.

[0039] In the utility model, a plurality of guide columns 8 are arranged between the fixed mold bottom plate 1 and the fixed mold 3. The guide column 8 can ensure that the ejection mechanism 6 and the floating jacking assembly 7 move smoothly in the predetermined direction during movement, avoid deviation and shaking, and thus improve the stability and precision of the demolding process.

[0040] In the utility model, the moving plate 61 includes a push plate 611 and a fixed plate 612 arranged in layers, and the fixed rod body 621 is provided with a boss at one end penetrating the fixed plate 612, and the surface of the fixed plate 612 facing the push plate 611 is provided with a groove for embedding the boss. This structure makes the installation and disassembly of the fixed rod body 621 more convenient.

[0041] In the preferred scheme, the distance between the second sleeve 722 and the driving plate 71 is less than the distance between the driving plate 71 and the movable rod body 622.

[0042] During the forming process, the movable rod body 622 is only subjected to the thrust force of the fixed ejector rod 62, which can ensure smooth ejection process and reduce the impact and deformation on the formed product, thereby improving product quality.

[0043] In the preferred embodiment of the utility model, the movable rod body 622 includes a head 622a and a guide shaft 622b arranged below the head 622a; the fixed mold 3 is provided with a first hole body 31 and a second hole body 32 for embedding the guide shaft 622b and the head 622a.

[0044] Through the setting of the first hole body 31 and the second hole body 32, the movable rod body 622 can move smoothly in the predetermined direction during ejection, avoiding deviation or shaking, thereby improving the stability and precision of demolding.

[0045] On the basis of the above embodiment, the guide shaft 622b is provided with a guide hole for embedding the fixed rod body 621 along the axis direction.

[0046] The guide hole can ensure that the movable rod body 622 keeps consistent movement track in multiple ejection processes, and improves the repeated positioning accuracy of the mold.

[0047] On the basis of the above embodiment, the annular gap between the guide shaft 622b and the first hole body 31 ensures the gas flow, accelerates the gas flow speed during the jacking, and has a heat dissipation effect.

[0048] In the utility model, the fixed mold 3 corresponds to the mold cavity and is provided with a plurality of groups of heat dissipation hole systems; the heat dissipation hole system comprises a first heat dissipation hole 33 and a plurality of second heat dissipation holes 34 arranged along the axis of the first heat dissipation hole 33; the first heat dissipation hole 33 is arranged through the fixed mold 3 along the horizontal direction; the second heat dissipation hole 34 is arranged along the vertical direction, and the end far from the mold cavity is arranged through. The combined design of the first heat dissipation hole 33 and the second heat dissipation hole 34 can quickly conduct heat from the mold cavity to the area far from the cavity, avoid heat accumulation in the local area, and make the mold temperature distribution more uniform.

[0049] On the basis of the above embodiment, the plurality of second heat dissipation holes 34 are arranged in cross intersection with the first heat dissipation hole 33.

[0050] By optimizing the layout of the heat dissipation hole, the cross intersection hole system can reduce the thermal resistance, make the heat more smoothly from the mold cavity to the outside, and further improve the heat dissipation effect.

[0051] Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principle of the utility model; without departing from the spirit and scope of the utility model, the utility model can also have various changes and improvements, and these changes and improvements all fall within the scope of the claimed utility model. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A mold for forming a car headlight cover, characterized in that, The mould comprises a fixed mould base plate (1), two gaskets (2), a fixed mould (3), a movable mould (4) and a movable mould base plate (5) arranged in sequence. The two gaskets (2) are arranged between the fixed mould base plate (1) and the fixed mould (3) to form a lifting space. A ejection mechanism (6) is arranged in the lifting space, and the ejection mechanism (6) comprises a moving plate (61) and a plurality of ejector rods (62) arranged on the moving plate (61), wherein the heads (622a) of the plurality of ejector rods (62) are in contact with the molding surface inside the fixed mould (3) through the fixed mould (3). The ejector rod (62) comprises a fixed rod body (621) and a movable rod body (622), the fixed rod body (621) is arranged on the moving plate (61), the movable rod body (622) is provided with a positioning hole for embedding the fixed rod body (621), and a floating lifting assembly (7) is arranged above the moving plate (61), the floating lifting assembly (7) comprises a driving plate (71) and a plurality of floating top seats (72), the floating top seat (72) comprises a first sleeve (721) and a second sleeve (722) sleeved on the fixed rod body (621), and a spring (723) arranged between the first sleeve (721) and the second sleeve (722). The head (622a) of the ejector rod (62) is flat.

2. The vehicle lamp housing forming mold according to claim 1, characterized by A plurality of guide columns (8) are arranged between the fixed mould base plate (1) and the fixed mould (3).

3. The vehicle lamp housing forming mold according to claim 1, characterized by The moving plate (61) comprises a push plate (611) and a fixed plate (612) arranged in layers, the fixed rod body (621) is provided with a boss at one end of the fixed plate (612), and the fixed plate (612) is provided with a groove for embedding the boss on the side facing the push plate (611).

4. The vehicle lamp housing forming mold according to claim 1, characterized by The distance between the second sleeve (722) and the driving plate (71) is less than the distance between the driving plate (71) and the movable rod body (622).

5. The vehicle lamp housing forming mold of claim 1, wherein, The movable rod body (622) comprises a head (622a) and a guide shaft (622b) arranged below the head (622a).

6. The vehicle lamp housing forming mold of claim 1, wherein, The fixed mould (3) is provided with a first hole body (31) and a second hole body (32) for embedding the guide shaft (622b) and the head (622a). The guide shaft (622b) is provided with a guide hole for embedding the fixed rod body (621) along the axis direction.

7. The vehicle lamp housing forming mold according to claim 6, characterized by There is an annular gap between the guide shaft (622b) and the first hole body (31).

8. The vehicle lamp housing forming mold of claim 6, wherein, The fixed mould (3) is provided with a plurality of groups of heat dissipation hole systems corresponding to the mold cavity.

9. The vehicle lamp housing forming mold of claim 1, wherein, The heat dissipation hole system comprises a first heat dissipation hole (33) and a plurality of second heat dissipation holes (34) arranged along the axis of the first heat dissipation hole (33), the first heat dissipation hole (33) is arranged through the fixed mould (3) along the horizontal direction, the second heat dissipation hole (34) is arranged along the vertical direction, and the end away from the mold cavity is arranged through. The plurality of second heat dissipation holes (34) and the first heat dissipation hole (33) are arranged in a cross shape.

10. The vehicle lamp housing forming mold of claim 9, wherein, ​

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