Injection mold for water falling groove of automobile

Abstract

The injection mold comprises an upper mold and a lower mold which are matched with each other, the lower mold comprises a bottom plate, an ejector pin plate and a plate B from bottom to top, an ejector pin is vertically arranged on the ejector pin plate, a sliding groove is formed in the plate B, a sliding block is arranged in the sliding groove, a second glue injection opening is formed in the sliding block, and a second glue injection opening is formed in the second glue injection opening. The bottom of the sliding block is connected with a second ejector pin assembly, the second ejector pin assembly is arranged above the ejector pin, a sliding block driving oil cylinder is arranged on one side of the sliding block, and the sliding block driving oil cylinder drives the sliding block to reciprocate and simultaneously drives the second ejector pin assembly to reciprocate. Compared with the prior art, the injection mold has the beneficial effects that the second ejector pin assembly is ingeniously combined with the sliding block, so that the glue injection ports of a product are additionally arranged on the sliding block, the filling of the glue injection amount during injection molding of the product is more uniform, the final product is fuller, the appearance surface of the product is not influenced, the deformation of the final product is smaller, and the practicability is strong.

Description

Technical Field

[0001] The utility model belongs to the field of injection molds, and in particular relates to an injection mold for an automobile water tank. Background Art

[0002] Car gutters are parts installed on cars for drainage. Due to the use environment of cars, cars often encounter rain during use. In order to prevent rain from entering the car, it is necessary to use a reasonable structure to allow rain to drain through the gutters. Existing car gutters are all made by injection molding. Car gutters with undercuts usually require sliders to be set in the mold to assist molding, such as Figure 1 As shown in the figure, when the undercut is located on the appearance surface of the product, the corresponding slider needs to contact the appearance surface of the product. Considering that demolding and ejection may interfere with the movement of the slider, it is impossible to arrange the injection points on the front of the product. Therefore, the current injection points of such products can usually only be evenly distributed in the B direction (i.e., the side of the product). In actual applications, it is found that this form is easy to make it difficult to fill the injection amount when injecting glue, and may also cause certain appearance deformation, resulting in a low appearance yield of the final product and affecting the effectiveness efficiency. Utility Model Content

[0003] The utility model provides an injection mold for an automobile water tank, which realizes setting of a glue injection position on a slide block through an ingenious ejection mechanism, and combined with the glue injection position on the side of the product, greatly improves the production efficiency of the product.

[0004] The purpose of the utility model is achieved through the following technical solutions:

[0005] An injection mold for a car gutter comprises an upper mold and a lower mold which match each other. The lower mold comprises a bottom plate, an ejector plate, and a B plate from bottom to top. The ejector plate is vertically provided with an ejector. A slide groove is provided on the B plate. A slider is provided in the slide groove. A second injection port is provided on the slider. A second ejector assembly is connected to the bottom of the slider. The second ejector assembly is arranged above the ejector. A slider driving cylinder is provided on one side of the slider. The slider driving cylinder drives the slider to reciprocate and drives the second ejector assembly to reciprocate at the same time.

[0006] Preferably, the second ejector pin assembly comprises a fixing seat connected to the bottom of one side of the slider, a second ejector pin is vertically arranged on the fixing seat, and the second ejector pin assembly is arranged below the second glue injection port.

[0007] Preferably, a spring is sleeved on the second ejector pin.

[0008] Preferably, driving cylinders are provided on both sides of the B plate, and the cylinder shafts of the driving cylinders are connected to the ejector plate.

[0009] Preferably, the second glue injection port is connected to the molding end on one side of the product through a bull horn runner.

[0010] Preferably, a first glue injection port is provided on the other side of the product, and the first glue injection port and the second glue injection port are respectively connected to the two side molding ends of the product through flow channels.

[0011] The beneficial effects of the utility model are as follows: the utility model realizes adding a glue injection port of the product on the slider through the ingenious combination of the second ejector assembly and the slider, so that the filling amount of the glue injection during product injection molding is more uniform, the final product is fuller, and the appearance of the product is not affected. The final product has less deformation and is highly practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0013] Figure 1 : A schematic diagram of a car gutter structure in the prior art of the utility model.

[0014] Figure 2 : A top view of the lower mold in the mold of the utility model.

[0015] Figure 3 : The utility model Figure 2 Schematic diagram of the cross-sectional structure of AA.

[0016] Figure 4 : The utility model Figure 3 Schematic diagram of the enlarged structure of part C in the middle. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solutions and advantages of the present invention more clear, the following Figure 2-Figure 4 It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0018] The utility model proposes an injection mold for automobile water tank, including an upper mold and a lower mold that match each other. The upper mold is similar to the existing injection mold, and both include an upper mold base, an upper mold plate, etc. The difference between the utility model and the existing technology lies in the lower mold, and the upper mold is adapted to the lower mold. Therefore, the upper mold is not described in detail.

[0019] The lower mold includes a bottom plate 1, an ejector plate 2, and a B plate 3 from bottom to top. The B plate 3 is provided with a core for forming a match with the cavity of the upper mold. A driving cylinder (not shown in the figure) is provided on both sides of the B plate 3, and the cylinder shaft of the driving cylinder is connected to the ejector plate 2. An ejector 21 is vertically provided on the ejector plate. When the driving cylinder is working, it drives the ejector plate 2 to move toward the upper mold, thereby driving the ejector 21 to move upward.

[0020] The B plate 3 is provided with a slide groove, a slider 4 is provided in the slide groove, a second glue injection port 62 is provided on the slider 4, and the second glue injection port 62 is connected to the molding end on one side of the product through a bullhorn flow channel 63. The other side of the product is provided with a first glue injection port, and the first glue injection port and the second glue injection port are respectively connected to the molding ends on both sides of the product through flow channels. In other words, the arrangement of the glue injection port of the product will enable the glue injection material to enter both sides of the product, so that the product filling is more uniform and full, which is conducive to the molding of the product. The position of the first glue injection port is the same as the position of the glue injection port in the B direction of the automobile gutter in the prior art.

[0021] The bottom of the slider is connected with a second ejector assembly 5. In the utility model, part of the ejector extends upward from the ejector plate 2 into the B plate 3, and its upper end is arranged below the second ejector assembly 5. The second ejector assembly 5 includes a fixed seat 51 connected to the bottom of one side of the slider 4, and a second ejector 52 is vertically and movably embedded on the fixed seat 51. A spring 53 is sleeved on the second ejector 52. Through the arrangement of the spring 53, it can play a force buffering role when the second ejector 52 is pushed upward. The second ejector assembly is arranged below the second glue injection port 62. In this embodiment, the lower end of the second ejector 52 is T-shaped, which cooperates with the T-shaped through hole opened on the fixed seat 51. The bottom of the second ejector 52 protrudes from the bottom end of the fixed seat 51. When the second ejector 52 is under the action of the ejector 21, it will reciprocate in the T-shaped through hole. Of course, there can be a variety of other structural forms of connection between the second ejector and the fixed seat to realize the movable up and down movement of the second ejector.

[0022] A slider driving cylinder (not shown in the figure) is provided on one side of the slider 4, and the slider driving cylinder drives the slider 4 to reciprocate, and also drives the second ejector assembly 5 to reciprocate. When the second ejector assembly 5 moves to the right position, the second ejector 52 will be coaxial with the ejector 21, and at this time, the driving cylinder works, and the top of the ejector 21 will contact the bottom of the second ejector 52, thereby driving the second ejector to move upward.

[0023] When the product is formed, after the upper and lower molds of the mold are closed, injection molding is carried out. After the injection molding is completed, the upper and lower molds are opened, and the slider drives the oil cylinder to work, driving the slider to move toward the product direction. When the movement is in place, the second ejector 52 is located directly above the ejector 21. At this time, the driving cylinder works to drive the ejector plate 2 to move upward, and the ejector 21 will eject the product. At the same time, the ejector 21 arranged below the second ejector 52 will abut the second ejector 52 and move upward to eject the runner, thereby finally realizing the demolding of the product.

[0024] In addition, it should be noted that, in the present invention, some ejectors are arranged below the molded product similar to the existing injection molds, and the ejector 21 shown in the figure is only used to better indicate the improved part of the present invention and to highlight the explanation.

[0025] Finally, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0026] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An injection mold for a car gutter, comprising an upper mold and a lower mold that match each other, characterized in that: The lower mold includes a bottom plate, an ejector plate, and a B plate from bottom to top. An ejector is vertically arranged on the ejector plate. A slide groove is opened on the B plate. A slider is arranged in the slide groove. A second glue injection port is arranged on the slider. A second ejector assembly is connected to the bottom of the slider. The second ejector assembly is arranged above the ejector. A slider driving cylinder is arranged on one side of the slider. The slider driving cylinder drives the slider to reciprocate and drives the second ejector assembly to reciprocate at the same time.

2. The injection mold for automobile water channel according to claim 1, characterized in that: The second ejector pin assembly comprises a fixing seat connected to the bottom of one side of the slider, a second ejector pin is vertically arranged on the fixing seat, and the second ejector pin assembly is arranged below the second glue injection port.

3. The injection mold for automobile water channel according to claim 2, characterized in that: The second ejector pin is sleeved with a spring.

4. The injection mold for automobile water channel according to claim 1, characterized in that: Driving cylinders are arranged on both sides of the B plate, and the cylinder shafts of the driving cylinders are connected to the ejector plate.

5. The injection mold for automobile water channel according to claim 1, characterized in that: The second injection port is connected to the molding end on one side of the product through a bull horn runner.

6. The injection mold for automobile water channel according to claim 5, characterized in that: A first glue injection port is provided on the other side of the product, and the first glue injection port and the second glue injection port are respectively connected to the two side molding ends of the product through flow channels.

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