A plastic mold for preparing a control handle on a car steering wheel

Abstract

The invention discloses a plastic mold for preparing a control handle on a car steering wheel, comprising a fixed mold plate and a movable mold plate, wherein a first slider assembly is arranged on the movable mold plate, and two second slider assemblies symmetrical to each other are arranged on the first slider assembly, and two second slider assemblies symmetrical to each other are arranged on the first slider assembly, and are respectively used for molding a first concave cavity and a connecting shaft on a product body of the control handle and molding a second concave cavity on the connecting shaft, and a delayed contact mechanism is arranged so that when the movable mold plate moves to open the mold, the first slider assembly starts to move after the second slider assembly finishes moving, and only one movement of the movable mold plate is required to complete the core pulling movement in two directions, thereby ensuring the molding of product features in two perpendicular directions, simplifying the process and improving the mold opening efficiency.

Description

Technical Field

[0001] The invention relates to a plastic mould, in particular to a plastic mould for preparing a control handle on a steering wheel of an automobile. Background Art

[0002] The structure of the control handle on the steering wheel of a car used to control the wipers and various lights is as follows Figure 1~Figure 3 As shown, Figure 1 is the main view of the control handle, Figure 2 yes Figure 1 AA section view, Figure 3 yes Figure 2 BB cross-sectional view. Figure 1 The mold opening direction of the fixed mold side and the movable mold side is determined based on the position of the parting line. Figure 2 It can be seen from the figure that the control handle is composed of a product body 100 and a connecting shaft 200 connected in one piece. The product body 100 has a first concave cavity 101, which is to be moved along the Figure 2 The mold is demoulded in the direction of the arrow indicated by the middle mark F. Figure 3 As can be seen from the figure, the connecting shaft 200 has a second concave cavity 201. Figure 3 The mold is demoulded in the direction indicated by the arrows G and H. Figure 2 and Figure 3 It can be seen that the arrow direction indicated by F and the arrow directions indicated by G and H are two perpendicular directions in the direction of the slider movement of the mold. The mold of this product usually needs to be equipped with two sets of slider assemblies for molding in two directions respectively, but at present, such a mold requires the sliders in two directions to move separately when opening and closing the mold, and there are action sequence requirements for opening and closing the mold, which not only makes the process complicated, but also has relatively low efficiency. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a plastic mold for preparing a control handle on a car steering wheel, which can simplify the process and improve the efficiency.

[0004] The technical solution adopted by the present invention to solve the above technical problems is: a plastic mold for preparing a control handle on a car steering wheel, comprising a fixed mold plate and a movable mold plate, the movable mold plate is provided with a first slider assembly whose sliding direction is perpendicular to the mold opening and closing direction, the first slider assembly is provided with two mutually symmetrical second slider assemblies, the sliding directions of the first slider assembly and the second slider assembly are perpendicular to each other, the first slider assembly is used for molding the first concave cavity and the connecting shaft on the product body of the control handle, the second slider assembly is used for molding the second concave cavity on the connecting shaft of the control handle, the first slider assembly is provided with a first driving mechanism, the second slider assembly is provided with a second driving mechanism, a delayed contact mechanism is provided between the first driving mechanism and the first slider assembly, when the movable mold plate moves to open the mold, the delayed contact mechanism causes the second slider assembly to finish moving, and then the first slider assembly starts to move.

[0005] Compared with the prior art, the advantage of the present invention is that two symmetrical second slider assemblies are arranged on the first slider assembly, and the sliding directions of the first slider assembly and the second slider assembly are perpendicular to each other, which are respectively used to control the molding of the first cavity and the connecting shaft on the product body of the handle and the molding of the second cavity on the connecting shaft, and by setting a delayed contact mechanism, when the movable template moves to open the mold, after the second slider assembly finishes moving, the first slider assembly starts to move, and only one movement of the movable template is required to complete the core pulling action in two directions, thereby ensuring the molding of product features in two vertical directions, simplifying the process and improving the mold opening efficiency.

[0006] Preferably, the first slider assembly includes a first slider and a first slider seat connected to each other, the first slider is used for forming the first concave cavity and the connecting shaft on the product body of the control handle, the first driving mechanism includes a first inclined guide column arranged on the fixed template and a first waist-shaped inclined guide hole arranged on the first slider seat, the first inclined guide column is inserted into the first waist-shaped inclined guide hole, and the first slider is provided with a sliding hole, the second slider assembly includes a second slider and a second slider seat, the second slider is slidably fitted into the sliding hole for forming the second concave cavity on the connecting shaft of the control handle, the second slider seat is provided with a sliding groove extending along the moving direction of the first slider, and the second slider is provided with a hanging platform that is slidably fitted and embedded in the sliding groove, the second driving mechanism includes a second inclined guide column arranged on the fixed template and a second inclined guide hole arranged on the second slider seat, the second inclined guide column is slidably fitted into the second inclined guide hole, and the delayed contact mechanism is a radial movement gap between the first inclined guide column and the first waist-shaped inclined guide hole.

[0007] Preferably, the first slider includes a first slider body and a first sliding insert, and the first sliding insert is used to form the first cavity and the connecting shaft on the product body of the control handle. This structure can repair the mold by replacing the first sliding insert, reducing the replacement cost.

[0008] Preferably, a thrust spring is provided between the second slider and the first slider, which can give thrust to the second slider when the mold is opened, so that the second slider can be smoothly separated from the second cavity.

[0009] Preferably, a limiting groove is provided on the second slider, and a limiting screw is provided on the first slider body. The limiting screw is fixed on the first slider body and radially extends through the first slider body into the sliding hole. The limiting screw cooperates with the limiting groove to prevent the second slider from falling off the first slider body. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is the main view of the product of the control handle;

[0011] Figure 2 for Figure 1 AA section view;

[0012] Figure 3 for Figure 2 BB cross-sectional view;

[0013] Figure 4 It is a structural schematic diagram of the first slider assembly when the mold is not opened according to an embodiment of the present invention;

[0014] Figure 5 It is a schematic structural diagram of the second slider assembly when the mold is not opened in the embodiment of the present invention;

[0015] Figure 6 for Figure 5 A partial enlarged view of

[0016] Figure 7 for Figure 5 CC section view;

[0017] Figure 8 It is a structural schematic diagram of the second slider assembly when the mold is opened to a certain distance in an embodiment of the present invention;

[0018] Fig. 9 for Figure 8 A partial enlarged view of

[0019] Fig.10 It is a structural schematic diagram of the first slider assembly when the mold is opened to a certain distance in an embodiment of the present invention;

[0020] Fig.11for Figure 8 DD cross-sectional view;

[0021] Fig.12 It is a structural schematic diagram of the first inclined guide post about to separate from the first slider seat when the mold is opened;

[0022] Fig.13 It is a structural schematic diagram of the first slider assembly when the first inclined guide column is about to separate from the first slider seat;

[0023] Fig.14 for Fig.12 EE cross-sectional view.

[0024] In the figure: 100 is the product body, 200 is the connecting shaft, 110 is the first concave cavity, 210 is the second concave cavity, 1 is the fixed template, 2 is the movable template, 3 is the first slider body, 4 is the first sliding insert, 5 is the first slider seat, 6 is the first inclined guide column, 7 is the first waist-shaped inclined guide hole, 8 is the sliding hole, 9 is the second slider, 10 is the hanging platform, 11 is the second slider seat, 12 is the sliding groove, 13 is the second inclined guide column, 14 is the second inclined guide hole, L is the radial movement gap, 16 is the limit groove, 17 is the limit screw, and 18 is the thrust spring. DETAILED DESCRIPTION

[0025] The present invention is further described in detail below with reference to the accompanying drawings.

[0026] Figure 1 This is the main product view of the control handle on the car steering wheel. Figure 2 This is the AA section view along the parting line of the mold. Figure 3 for Figure 2 BB section view. The material of the product is PA66-GF30. The dimensions are a=55.4mm, b=43.2mm, c=6.9mm, d=31mm, e=25.3mm, f=3.6mm, g=4.2mm. After the position of the parting line of the main view of the product and the opening direction of the fixed plate 1 and the movable plate 2 are determined, Figure 2 It can be seen from the figure that at the first cavity 110 of the product body 100, the mold is released along the direction of the arrow indicated by F. Figure 3 It can be seen that the control handle is demolded along the arrow direction indicated by G and the arrow direction indicated by H at the second concave cavity 210 of the connecting shaft 200; that is, the arrow direction indicated by F is perpendicular to the arrow direction indicated by G and the arrow direction indicated by H in the direction of the slider movement of the mold. This embodiment is formed around the sliders in these two directions, showing that a slider in another direction is installed on a slider, completing the core pulling action of the sliders in the two directions.

[0027] The mold structure of the present invention is shown in Figures 4 to 7.

[0028] like Figure 4 As shown, there is a 13mm radial movement gap L in the first waist-shaped inclined guide hole 7 matching the first inclined guide column 6 and the first slider seat 5. The function of this radial movement gap L is to enable the first slider seat 5, the first slider body 3 and the first sliding insert 4 to achieve delayed core pulling action during the mold opening process.

[0029] like Figure 5 As shown, the second slider 9 is slidably fitted into the sliding hole 8, the second slider seat 11 is provided with a sliding groove 12 extending along the moving direction of the first slider body 3, the second slider 9 is provided with a hanging platform 10 that is slidably fitted into the sliding groove 12, the fixed mold plate 1 is provided with a second inclined guide column 13, and a second inclined guide hole 14 is provided on the second slider seat 11, the second inclined guide column 13 is slidably fitted into the second inclined guide hole 14, when the mold is opened, under the drive of the second inclined guide column 13, the second slider seat 11 will retreat, driving the second slider 9 to disengage from the second concave cavity 210 of the connecting shaft 200.

[0030] like Figure 6 As shown, corresponding to Figure 3 The undercut area of ​​the second concave cavity 210 of the middle connecting shaft 200, which is formed by demoulding in the direction of the arrows G and H, is Figure 6 The product undercut areas at J and N indicated in the figure are the molding areas of the head corresponding to the second slider 9. There is a 6mm activity space at the assembly position limit groove 16 corresponding to the limit screw 17 and the second slider 9. The second slider 9 and the second slider seat 11 are connected in the manner that the hanging platform 10 is embedded in the slide groove 12 to transmit the axial force transmitted to the second slider seat 11 when retreating. The limit screw 17 is fixed on the first slider body 3, passes through the first slider body 3 and the first sliding insert 4, radially extends into the slide hole 8 and is embedded in the limit groove 16 to prevent the second slider 9 from falling off from the first slider body 3.

[0031] like Figure 7 As shown in the figure, the relative position relationship between the first sliding insert 4, the first slider seat 5 and the first inclined guide column 6 during the mold opening process is shown. The thrust spring 18 is used to give thrust to the second slider 9 when the mold is opened, so that the second slider 9 can smoothly leave the second cavity 210. At this time, the second slider 9 has not left the second cavity 210.

[0032] Figure 8 The movable mold plate 2 and the fixed mold plate 1 of the mold are separated by a distance of N=18.2mm. As can be seen from the figure, when the mold is opened by a distance of 18.2mm, the second inclined guide pillar 13 drives the second slider seat 11 and the second slider 9 to move a distance along the sliding direction. At this time, the second inclined guide pillar 13 is just in the position of leaving the second slider seat 11.

[0033] Fig. 9 yes Figure 8 A partial enlarged view of the second slider 9 can be seen from the figure that at this time, the second slider 9 has been separated from the second cavity 210 by a distance, and the limit screw 17 is in contact with the second slider 9, preventing the second slider seat 11 from continuing to move in the sliding direction. At this time, a 6 mm idle travel appears in the limit groove 16.

[0034] Fig.10 This is the case where the mold opening distance between the movable mold plate 2 and the fixed mold plate 1 is 18.2 mm. As can be seen from the figure, in the first waist-shaped inclined guide hole 7 matched with the first inclined guide column 6 and the first slider seat 5, the current radial movement gap L=4 mm. If the mold opening continues, the first inclined guide column 6 will contact the first waist-shaped inclined guide hole 7 of the first slider seat 5.

[0035] Fig.11 yes Figure 8 DD sectional view. The figure shows the relative position relationship between the first sliding insert 4, the first slider seat 5 and the first inclined guide column 6 during the mold opening process. It can be seen from the figure that the second slider 9 has been separated from the second cavity 210 at this time.

[0036] Fig.12 This is the state when the movable die plate 2 and the fixed die plate 1 of the mold are separated to the point where the first inclined guide column 6 is about to be separated from the first slider seat 5. It can be seen that the movable die plate 2 and the fixed die plate 1 have been completely separated.

[0037] Fig.12 It can be seen from the figure that the hanging platform 10 of the second slider 9 has been separated from the sliding groove 12 of the second slider seat 11.

[0038] like Fig.13 As shown, at this time, the product body 100 has been completely separated from the first sliding insert 4 smoothly, and if the mold continues to open, the product can be ejected.

[0039] Fig.14 yes Fig.12 EE section view in. Fig.14 It can be seen that, driven by the first inclined guide column 6, the slider system composed of the first slider body 3 and the first slider seat 5 has completed the mold opening action, and the first sliding insert 4 fixed on the first slider body 3 has also completed the mold opening action. At this time, the control handle has completely separated from the first sliding insert 4. Similarly, the hanging platform 10 of the second slider 9 set on the first slider seat 5 and the slide groove 12 of the second slider seat 11 have also completed the separation action.

[0040] So far, the delayed slider structure of the core pulling in two directions has completed the mold opening action, and the control handle has successfully completed the demoulding action.

[0041] The mold closing process is just the opposite of this process, and the mold closing action can also be completed smoothly.

Claims

1. A plastic mold for preparing a control handle on a car steering wheel, comprising a fixed mold plate and a movable mold plate, wherein the movable mold plate is provided with a first slider assembly whose sliding direction is perpendicular to the mold opening and closing direction, and the first slider assembly is provided with two mutually symmetrical second slider assemblies, wherein the sliding directions of the first slider assembly and the second slider assembly are perpendicular to each other, the first slider assembly is used for molding a first concave cavity and a connecting shaft on the main body of the control handle, and the second slider assembly is used for molding a second concave cavity on the connecting shaft of the control handle, characterized in that: The first slider assembly is provided with a first driving mechanism, the second slider assembly is provided with a second driving mechanism, and a delayed contact mechanism is provided between the first driving mechanism and the first slider assembly. When the movable plate moves to open the mold, the delayed contact mechanism causes the second slider assembly to finish moving, and then the first slider assembly starts to move. The first slider assembly includes a first slider and a first slider seat connected to each other, the first slider is used for forming the first concave cavity and the connecting shaft on the main body of the control handle, the first driving mechanism includes a first inclined guide column arranged on the fixed template and a first waist-shaped inclined guide hole arranged on the first slider seat, the first inclined guide column is inserted into the first waist-shaped inclined guide hole, the first slider is provided with a sliding hole, the second slider assembly includes a second slider and a second slider seat, the second slider is slidably fitted into the sliding hole for forming the second concave cavity on the connecting shaft of the control handle, the second slider seat is provided with a sliding groove extending along the moving direction of the first slider, the second slider is provided with a hanging platform that is slidably fitted and embedded in the sliding groove, the second driving mechanism includes a second inclined guide column arranged on the fixed template and a second inclined guide hole arranged on the second slider seat, the second inclined guide column is slidably fitted into the second inclined guide hole, and the delayed contact mechanism is a radial movement gap between the first inclined guide column and the first waist-shaped inclined guide hole.

2. A plastic mold for preparing a control handle on a car steering wheel as claimed in claim 1, characterized in that The first slider includes a first slider body and a first sliding insert, and the first sliding insert is used for forming the first concave cavity and the connecting shaft on the body of the control handle.

3. A plastic mold for preparing a control handle on a car steering wheel as claimed in claim 1, characterized in that A thrust spring is arranged between the second sliding block and the first sliding block.

4. A plastic mold for preparing a control handle on a car steering wheel as claimed in claim 2, characterized in that A limiting groove is provided on the second slider, and a limiting screw is provided on the first slider body. The limiting screw is fixed on the first slider body and radially extends into the sliding hole through the first slider body. The limiting screw cooperates with the limiting groove to prevent the second slider from falling off the first slider body.

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