Pouring gate sleeve and mold closing foaming upper mold thereof

Abstract

The utility model relates to the technical field of automobile instrument panel mold closing foaming, in particular to a sprue gate sleeve and a mold closing foaming upper mold thereof, which comprise a sprue gate sleeve body, a first connecting structure, a sprue gate and a sealing structure, the sprue gate is arranged on the sprue gate sleeve body, and the first connecting structure is connected to the sprue gate sleeve body; a second connecting structure is arranged at the end, away from the first connecting structure, of the sprue gate sleeve body, and the sealing structure is connected to the second connecting structure. The second connecting structure is provided with a plurality of adjusting gaskets used for adjusting the relative height between the second connecting structure and the sealing structure, and the adjusting gaskets are detachably connected with the second connecting structure. According to the utility model, the requirement of a disposable foam self-adhesion sealing ring can be canceled, the problems of falling off, deviation and the like of the sealing ring can be avoided, and good sealing performance can be kept while the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of closed-mold foaming of automobile instrument panels, and more specifically to a pouring mouth sleeve and a closed-mold foaming upper mold thereof. Background Art

[0002] In the manufacture of soft automotive dashboards, polyurethane foaming technology is mostly used. By filling polyurethane foam material between the dashboard skin and the dashboard frame, the skin and the frame are connected together to form a soft texture.

[0003] Instrument panel foaming is divided into two types according to the difference in pouring methods: open mold foaming and closed mold foaming. Open mold foaming means that when the foaming mold is open, the foaming raw material is poured into the foaming lower mold through the injection device on the robot arm, and the mold is closed after the pouring is completed; closed mold foaming means that when the foaming mold is closed, the foaming raw material is poured into the mold through the pouring port of the foaming upper mold through the injection device installed on the foaming upper mold. Compared with open mold foaming, closed mold foaming has a shorter exposure time for raw materials, is less affected by ambient temperature and humidity, and has more stable quality; fast-curing polyurethane materials can be selected, and the production cycle is shorter.

[0004] At present, the molds for closed-mold foaming of instrument panels on the market have a hard collision between the injection molding frame of the instrument panel and the upper foaming mold at the pouring port. In order to prevent the foaming raw materials from leaking from the gap between the frame of the instrument panel and the upper foaming mold, a disposable foam self-adhesive sealing ring needs to be pasted around the pouring port.

[0005] However, the disposable foam self-adhesive seal ring is a disposable consumable and is expensive to purchase. In actual production, it takes complicated operations to stick the disposable foam self-adhesive seal ring on the pouring port, which increases the working hours and labor costs; the disposable foam self-adhesive seal ring is also prone to falling off and deviation, which can cause the foaming machine to stop; it is also necessary to select disposable foam self-adhesive seal rings of different specifications according to the deformation of the injection molding skeleton of the dashboard of different models and the different precision deviations of the single product, which increases the difficulty of on-site management and reduces production efficiency. Utility Model Content

[0006] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a pouring mouth sleeve, which eliminates the need for a disposable foam self-adhesive sealing ring, can avoid problems such as the sealing ring falling off and deviating, improves production efficiency and maintains good sealing performance.

[0007] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0008] A pouring nozzle sleeve is provided, comprising a pouring nozzle sleeve body, a first connecting structure, a pouring port, and a sealing structure, wherein the pouring port is opened in the pouring nozzle sleeve body, and the first connecting structure is connected to the pouring nozzle sleeve body; a second connecting structure is provided at one end of the pouring nozzle sleeve body away from the first connecting structure, and the sealing structure is connected to the second connecting structure; a plurality of adjustment gaskets for adjusting the relative height between the second connecting structure and the sealing structure are provided on the second connecting structure, and the adjustment gaskets are detachably connected to the second connecting structure.

[0009] The utility model can add a plurality of adjustment gaskets in the second connection structure to adjust the relative height between the sealing structure and the second connection structure. Under the premise that the injection device remains unchanged, if it is designed according to a conventional scheme, that is, the sealing structure protrudes from the second connection structure by 0.2mm-0.3mm, if the expected sealing effect is not achieved, the protrusion amount of the sealing structure can be changed by adding adjustment gaskets to ensure its good sealing performance.

[0010] Preferably, the second connection structure is a groove, the grooves are distributed in a circle with the pouring port as the center, and the adjustment gasket is a circular gasket matching the groove. A plurality of circular gaskets are placed at the bottom of the groove to reduce the depth of the groove.

[0011] Preferably, the groove is a rectangular groove, which is convenient for placing the annular gasket.

[0012] Preferably, the sealing structure is a sealing ring matching the groove.

[0013] Preferably, the sealing ring is interference fit with the rectangular groove. An appropriate interference fit can improve the service life and sealing performance of the sealing ring. If the interference fit is too large, the sealing ring will be deformed or damaged, thereby affecting the sealing effect; if the interference fit is too small, the sealing ring will become loose or even fall off, which will also affect the sealing effect.

[0014] Preferably, the depth of the rectangular groove is smaller than the wire diameter of the sealing ring, and the difference between the depth of the rectangular groove and the wire diameter of the sealing ring is 0.2mm-0.3mm; the width of the rectangular groove is smaller than the wire diameter of the sealing ring, and the difference between the width of the rectangular groove and the wire diameter of the sealing ring is 0.4mm-0.6mm. The interference between the rectangular groove and the sealing ring in the vertical direction is 0.2-0.3mm, and the interference between the rectangular groove and the sealing ring in the horizontal direction is 0.4-0.6mm. The appropriate interference can improve the service life and sealing performance of the sealing ring.

[0015] Preferably, the first connecting structure is a connecting plate.

[0016] Preferably, the connecting plate is provided with a first through hole and a plurality of second through holes for fixing the pouring nozzle sleeve body, the first through hole is connected to the pouring nozzle, and the second through holes are evenly distributed in a circle with the first through hole as the center.

[0017] Preferably, the second through hole is a stepped hole. The step hole can allow the molten material to quickly fill the mold cavity, thereby improving the casting efficiency.

[0018] The utility model also provides a closed-mold foaming upper mold, comprising an upper mold and the above-mentioned pouring mouth sleeve, wherein the pouring mouth sleeve is connected to the mounting hole of the upper mold through the first connecting structure.

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] The utility model can eliminate the need for a disposable foam self-adhesive sealing ring, and can also avoid the problems of the sealing ring falling off, deviating, etc., thereby improving production efficiency and maintaining good sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a structural schematic diagram of a pouring nozzle sleeve of the utility model;

[0022] Figure 2 This is a structural schematic diagram of the second connection structure of the utility model;

[0023] Figure 3 It is a schematic diagram of the structure of the second through hole of the utility model;

[0024] Figure 4 The utility model is a schematic diagram of the installation structure of a closed-mold foaming upper mold.

[0025] The illustrations are as follows:

[0026] 1. pouring nozzle sleeve body; 11. second connection structure; 2. first connection structure; 21. connection plate; 211. first through hole; 212. second through hole; 3. pouring nozzle; 4. sealing structure; 10. pouring nozzle sleeve; 20. upper mold. DETAILED DESCRIPTION

[0027] The utility model is further described below in conjunction with specific implementation methods. The drawings are only used for exemplary descriptions, and are only schematic diagrams, not actual pictures, and cannot be understood as limitations on this patent; in order to better illustrate the embodiments of the utility model, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0028] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships, they are based on the orientations or positional relationships shown in the drawings, which 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 orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0029] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0030] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0032] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0033] Embodiment 1

[0034] like Figure 1 to Figure 2 The first embodiment of a pouring nozzle sleeve of the utility model is shown, which includes a pouring nozzle sleeve body 1, a first connecting structure 2, a pouring port 3, and a sealing structure 4. The pouring port 3 is opened in the pouring nozzle sleeve body 1, and the first connecting structure 2 is connected to the pouring nozzle sleeve body 1.

[0035] Among them, a second connecting structure 11 is provided at one end of the pouring nozzle sleeve body 1 away from the first connecting structure 2, and the sealing structure 4 is connected to the second connecting structure 11; the second connecting structure 11 is provided with a plurality of adjustment gaskets for adjusting the relative height between the second connecting structure 11 and the sealing structure 4, and the adjustment gaskets are detachably connected to the second connecting structure 11.

[0036] Optionally, the outer diameter of one end of the pouring nozzle sleeve body 1 provided with the second connecting structure 11 is 20 mm, and the wall thickness is 8 mm, so as to meet the space requirement for the subsequent installation of the sealing structure 4 .

[0037] Specifically, the second connection structure 11 is a groove, and the grooves are distributed in a circle with the pouring port 3 as the center, and the adjustment gasket is a circular ring gasket matching the groove. A plurality of circular ring gaskets are placed at the bottom of the groove to reduce the depth of the groove. This setting can adjust the protrusion of the sealing structure 4 by placing a plurality of circular ring gaskets in the groove, and can provide a better sealing effect according to actual conditions.

[0038] Preferably, the groove is a rectangular groove. Optionally, the rectangular groove is designed to have a depth of 2.8 mm and a width of 2.5 mm.

[0039] Preferably, the sealing structure 4 is a sealing ring matching the groove.

[0040] Specifically, the sealing ring is an O-type rubber sealing ring. The O-type rubber sealing ring is generally installed in a groove with a rectangular cross section on the outer circle or inner circle to play a sealing role. In addition, the O-type rubber sealing ring still plays a good sealing and shock absorption role in environments such as oil resistance, acid and alkali resistance, abrasion, and chemical corrosion. The O-type rubber sealing ring with an inner diameter of 15.0mm and a wire diameter of 3.0mm can be selected.

[0041] Among them, the O-type rubber sealing ring and the rectangular groove have an interference fit. Specifically, the depth of the rectangular groove is less than the diameter of the O-type rubber sealing ring, and the depth of the rectangular groove differs from the diameter of the O-type rubber sealing ring by 0.2mm-0.3mm; the width of the rectangular groove is less than the diameter of the O-type rubber sealing ring, and the width of the rectangular groove differs from the diameter of the O-type rubber sealing ring by 0.4mm-0.6mm. The appropriate interference amount can improve the service life and sealing performance of the O-type rubber sealing ring. If the interference amount is too large, the O-type rubber sealing ring will be deformed or damaged, thereby affecting the sealing effect; if the interference amount is too small, the O-type rubber sealing ring will become loose or even fall off, which will also affect the sealing effect. In this embodiment, the interference amount between the rectangular groove and the O-type rubber sealing ring in the vertical direction is 0.2-0.3mm, and the interference amount between the rectangular groove and the O-type rubber sealing ring in the horizontal direction is 0.4-0.6mm. This setting provides a good sealing effect while avoiding the phenomenon of hard collision between the instrument panel injection molding skeleton and the foaming upper mold at the pouring port position.

[0042] In this embodiment, a number of circular gaskets can be added in the rectangular groove to adjust the relative height between the O-ring and the rectangular groove. Under the premise that the injection device remains unchanged, if it is designed according to the conventional scheme, that is, the O-ring protrudes from the rectangular groove by 0.2mm-0.3mm, if the expected sealing effect is not achieved, the protrusion of the O-ring can be changed by adding circular gaskets to provide a better sealing effect.

[0043] Embodiment 2

[0044] This embodiment is similar to the first embodiment, except that, in this embodiment, Figure 1 As shown, the first connection structure 2 is a connection plate 21 .

[0045] The connecting plate 21 is provided with a first through hole 211 and a plurality of second through holes 212 for fixing the pouring nozzle sleeve body 1 , and the first through hole 211 is connected to the pouring nozzle 3 .

[0046] Specifically, the first through hole 211 is a stepped hole. The setting of the stepped hole can allow the molten material to quickly fill the mold cavity, thereby improving the casting efficiency.

[0047] Preferably, four second through holes 212 are provided, which are evenly distributed on the connecting plate 21 in a circle with the first through hole 211 as the center.

[0048] In this embodiment, the second through hole 212 is used to fix the pouring nozzle sleeve body 1, and the arrangement of four second through holes 212 can provide a better fastening effect.

[0049] Embodiment 3

[0050] This embodiment is similar to the first embodiment or the second embodiment, except that, in this embodiment, Figure 3 As shown, a closed mold foaming upper mold is provided, including an upper mold 20, and also including a pouring nozzle sleeve 10 as described in Example 1 or Example 2, and the pouring nozzle sleeve 10 is connected to the mounting hole of the upper mold 20 through a first connecting structure 2. It should be noted that the upper mold 20 is a prior art and will not be described here.

[0051] The pouring nozzle sleeve 10 is connected to the upper mold 20 by means of bolts passing through the second through hole 212 .

[0052] In this embodiment, the pouring mouth sleeve 10 is detachably connected to the upper mold 20 by bolts. The provision of the pouring mouth sleeve 10 can eliminate the need to paste a disposable foam self-adhesive sealing ring on the injection molding frame of the instrument panel, saving consumables. If the sealing effect is not ideal after the upper mold 20 and the lower mold are molded together, the mold can be opened and a number of circular gaskets can be added to the rectangular groove of the pouring mouth sleeve 10 on the upper mold 20 to adjust the relative height between the O-type rubber sealing ring and the rectangular groove. Under the premise that the injection device remains unchanged, if it is designed according to the conventional scheme, that is, the O-type rubber sealing ring protrudes 0.2mm-0.3mm from the rectangular groove, if the expected sealing effect is not achieved, the protrusion of the O-type rubber sealing ring can be changed by adding circular gaskets to provide a better sealing effect.

[0053] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

[0054] Obviously, the above embodiments of the utility model are only examples for clearly explaining the utility model, and are not intended to limit the implementation methods of the utility model. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is not necessary and impossible to list all the implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. A pouring nozzle sleeve (10), characterized in that: It comprises a pouring nozzle sleeve body (1), a first connection structure (2), a pouring port (3), and a sealing structure (4), wherein the pouring port (3) is opened on the pouring nozzle sleeve body (1), and the first connection structure (2) is connected to the pouring nozzle sleeve body (1); A second connection structure (11) is provided at one end of the pouring nozzle sleeve body (1) away from the first connection structure (2), and the sealing structure (4) is connected to the second connection structure (11); The second connection structure (11) is provided with a plurality of adjustment gaskets for adjusting the relative height between the second connection structure (11) and the sealing structure (4); the adjustment gaskets are detachably connected to the second connection structure (11).

2. A pouring nozzle sleeve (10) according to claim 1, characterized in that: The second connection structure (11) is a groove, the grooves are distributed in a circle with the pouring port (3) as the center, and the adjustment gasket is a circular gasket matching the groove.

3. A pouring nozzle sleeve (10) according to claim 2, characterized in that: The groove is a rectangular groove.

4. A pouring nozzle sleeve (10) according to claim 3, characterized in that: The sealing structure (4) is a sealing ring that matches the groove.

5. A pouring nozzle sleeve (10) according to claim 4, characterized in that: The sealing ring is interference fit with the rectangular groove.

6. A pouring nozzle sleeve (10) according to claim 5, characterized in that: The depth of the rectangular groove is smaller than the wire diameter of the sealing ring, and the difference between the depth of the rectangular groove and the wire diameter of the sealing ring is 0.2mm-0.3mm; the width of the rectangular groove is smaller than the wire diameter of the sealing ring, and the difference between the width of the rectangular groove and the wire diameter of the sealing ring is 0.4mm-0.6mm.

7. A pouring nozzle sleeve (10) according to any one of claims 1 to 6, characterized in that: The first connection structure (2) is a connection plate (21).

8. The pouring nozzle sleeve (10) according to claim 7, characterized in that: The connecting plate (21) is provided with a first through hole (211) and a plurality of second through holes (212) for fixing the pouring nozzle sleeve body (1); the first through hole (211) is connected to the pouring nozzle (3); and the second through holes (212) are evenly distributed in a circle with the first through hole (211) as the center.

9. A pouring nozzle sleeve (10) according to claim 8, characterized in that: The second through hole (212) is a stepped hole.

10. A closed-mold foaming upper mold, comprising an upper mold (20), characterized in that: It also comprises a pouring nozzle sleeve (10) according to any one of claims 1 to 9, wherein the pouring nozzle sleeve (10) is connected to the mounting hole of the upper mold (20) through the first connecting structure (2).

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