Injection type sealing ring mold

Abstract

The utility model discloses an injection type sealing ring die which comprises a first die plate and a second die plate, a lower forming groove is formed in the first die plate, an upper forming groove is formed in the second die plate, a cavity is formed between the upper forming groove and the lower forming groove, an upper peripheral pressure bearing area is arranged on the periphery of the upper forming groove, and a lower peripheral pressure bearing area is arranged on the periphery of the lower forming groove. A lower peripheral pressure-bearing area opposite to the upper peripheral pressure-bearing area is arranged on the periphery of the lower forming groove, a first material injection hole is formed in the first mold plate, a second material injection hole communicated with the first material injection hole is formed in the second mold plate, and a lower inner peripheral pressure-bearing area is arranged on the periphery of the lower forming groove and on the periphery of the first material injection hole. An upper inner surrounding pressure-bearing area opposite to the lower inner surrounding pressure-bearing area is arranged on the periphery of the upper forming groove and the periphery of the first injection hole, a dermatoglyph area is arranged between the upper outer surrounding pressure-bearing area and the upper inner surrounding pressure-bearing area, an air inlet groove is formed in the periphery of the upper forming groove, the air inlet groove is communicated with the dermatoglyph area, and the air inlet groove extends out of the upper outer surrounding pressure-bearing area. The mold plate is simple in structure, and a formed part is prevented from being adhered to the bottom of the mold plate.

Description

Technical Field

[0001] The utility model relates to the technical field of molds for manufacturing rubber rings, in particular to an injection-type sealing ring mold. Background Art

[0002] The sealing ring mold is a common rubber mold. With the continuous increase in raw material and labor costs, the profit of ordinary sealing ring products has been continuously reduced, which has increased the operating pressure on enterprises. Therefore, some companies have abandoned the old die-casting rubber sealing ring mold structure, adopted the cold runner injection structure, and introduced a robot to replace manual demoulding and spraying of mold release agents. The original intention of the new mold system design is to keep all the products on the upper cavity surface of the lower mold and the middle mold. The robot sprays the mold release agent on the upper mold. After the spraying is completed, the products left on the upper surface of the middle mold and the lower mold are grabbed. During the actual production of the new mold structure system, it was found that some products randomly stuck to the upper mold, causing the robot to only grab the products of the lower mold, resulting in some products being unable to be taken out and needing to be taken out manually. The mold system runs semi-automatically, which reduces production efficiency to a certain extent. Utility Model Content

[0003] In order to solve the technical problems existing in the background technology, the utility model provides an injection-type sealing ring mold.

[0004] The utility model provides an injection-type sealing ring mold, comprising a first template and a second template. When the mold has only one layer of cavity, the first template and the second template may be an upper template and a lower template. When the mold has two layers of cavity, the first template and the second template may be a lower template and a middle template or a middle template and an upper template. The first template is provided with a lower molding groove, and the second template is provided with an upper molding groove. A cavity is formed between the upper molding groove and the lower molding groove. The difference from the prior art is that the outer periphery of the upper molding groove is provided with an upper peripheral pressure-bearing area, and the outer periphery of the lower molding groove is provided with an outer peripheral pressure-bearing area that is close to the upper outer peripheral pressure-bearing area. A lower peripheral pressure-bearing zone is opposite to the surrounding pressure zone, a first injection hole is opened on the first template, a second injection hole connected with the first injection hole is opened on the second template, the periphery of the lower molding groove and the outer periphery of the first injection hole has a lower inner surrounding pressure zone, the periphery of the upper molding groove and the outer periphery of the first injection hole has an upper inner surrounding pressure zone opposite to the lower inner surrounding pressure zone, a leather grain zone is provided between the upper peripheral pressure zone and the upper inner surrounding pressure zone, the outer periphery of the upper molding groove is opened with an air inlet groove, the air inlet groove is connected with the leather grain zone and the air inlet groove extends out of the upper peripheral pressure zone.

[0005] Preferably, the mold cavities are provided in a plurality of groups, and the plurality of groups of mold cavities are circumferentially distributed outside the first injection hole and the second injection hole.

[0006] Preferably, an air inlet groove is provided between any two adjacent groups of the cavities.

[0007] Preferably, the air inlet groove is opened on the upper peripheral pressure-bearing zone, and there is an outer extrusion distance from the air inlet groove to the inner circle of the upper peripheral pressure-bearing zone.

[0008] Preferably, the upper inner peripheral pressure-bearing area and the dermatoglyphic area have overlapping parts and non-overlapping parts, and the non-overlapping parts are located within the overlapping parts.

[0009] Preferably, the surface roughness of the dermatoglyphics of the overlapping portion of the dermatoglyphics area and the upper inner peripheral pressure-bearing area is smaller than the surface roughness of the portion of the dermatoglyphics area that does not overlap with the upper inner peripheral pressure-bearing area.

[0010] Preferably, a third template is provided above the second template, a lower molding groove is provided on the upper surface of the second template, an upper molding groove is provided on the lower surface of the third template, the upper molding groove of the second template and the lower molding groove of the second template are opposite to each other, the upper molding groove of the third template and the lower molding groove of the second template form a cavity, and a third injection hole connected to the first injection hole is opened on the third template.

[0011] Preferably, the third injection hole is coaxial with the first injection hole.

[0012] In the utility model, the injection-type sealing ring mold proposed has a simple structure. By arranging a leather grain area and an air intake groove with leather grain on the upper surface of the cavity (i.e., the surface of the upper molding groove), it is avoided that the rubber ring in the cavity adheres to the upper molding groove after processing, thereby ensuring that the product remains in the lower molding groove when the finished product is demolded, making it convenient for the robot to take out all the products at one time, reducing labor costs and improving production efficiency.

[0013] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the partial structure of the first template of the utility model;

[0016] Figure 3 This is a schematic diagram of the partial structure of the lower surface of the second template of the utility model;

[0017] Figure 4 It is a schematic diagram of the partial structure of the upper surface of the second template of the utility model;

[0018] Figure 5 This is a schematic diagram of the local structure of the lower surface of the third template of the utility model;

[0019] In the figure: 1. first template; 10. first injection hole; 2. second template; 21. second injection hole; 3. lower molding groove; 4. upper molding groove; 5. upper outer pressure-bearing area; 6. lower outer pressure-bearing area; 7. lower inner pressure-bearing area; 8. upper inner pressure-bearing area; 9. air inlet groove; 11. third template; 110. third injection hole; 12. leather grain area. DETAILED DESCRIPTION

[0020] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar symbols throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0021] like Figure 1-Figure 5 The mold for an injection-type sealing ring shown in the figure comprises a first template 1 and a second template 2. When the mold has only one layer of cavity, the first template 1 and the second template 2 can be an upper template and a lower template. When the mold has two layers of cavity, the first template 1 and the second template 2 can be a lower template and a middle template or a middle template and an upper template. The upper surface of the first template 1 is provided with a lower molding groove 3, and the lower surface of the second template 2 is provided with an upper molding groove 4. A cavity is formed between the upper molding groove 4 and the lower molding groove 3. The difference from the prior art is that the lower surface of the second template 2 and the outer periphery of the upper molding groove 4 are provided with an upper peripheral pressure-bearing area 5, and the upper surface of the first template 1 and the outer periphery of the lower molding groove 3 are provided with a lower peripheral pressure-bearing area 6 opposite to the upper peripheral pressure-bearing area 5. The first template 1 is provided with a first injection hole 10, and the second template 2 A second injection hole 21 connected to the first injection hole 10 is opened on the upper surface, the upper surface of the first template 1, the periphery of the lower molding groove 3 and the periphery of the first injection hole 10 have a lower inner pressure zone 7, the lower surface of the second template 2, the periphery of the upper molding groove 4 and the periphery of the first injection hole 10 have an upper inner pressure zone 8 opposite to the lower inner pressure zone 7, a dermatoglyphic zone 12 is provided between the upper outer pressure zone 5 and the upper inner pressure zone 8, an air inlet groove 9 is opened on the lower surface of the second template 2 and the periphery of the upper molding groove 4, the air inlet groove 9 is connected with the dermatoglyphic zone 12 and extends out of the upper outer pressure zone 5; the structure of the air inlet groove 9 is set according to actual conditions. In the present embodiment, the length of the air inlet groove 9 is 42mm-45mm, the width is 0.06mm, and the depth is 0.008mm-0.01mm.

[0022] The leather grain area 12 is the laser processed part with leather grain. By setting the air inlet 9 in this area, the vacuum environment in the leather grain 12 area is changed, and the adsorption force of the second template 2 on the product is reduced, thereby ensuring that the product remains in the lower molding groove 3 when the finished product is demolded, making it convenient for the robot to take out all the products at one time, reducing labor costs and improving production efficiency.

[0023] Preferably, the outer periphery of the dermatoglyphic zone 12 is arranged parallel to the outer periphery of the upper peripheral pressure-bearing zone 5, the upper peripheral pressure-bearing zone 5 is arranged parallel to the outer periphery of the cavity, and the distance from the outer periphery of the dermatoglyphic zone 12 to the cavity is 5mm-5.5mm, and the distance from the inner periphery of the dermatoglyphic zone 12 to the outer wall of the second injection hole 21 is 0.3mm-0.5mm.

[0024] Preferably, it further comprises a third template 11, the third template 11 is installed on the second template 2, the first template 1 is the lower template, the second template 2 is the middle template, the third template 11 is the upper template, the lower surface of the upper template has an upper molding groove 4, the upper surface of the middle template has a lower molding groove 3, the lower surface of the middle template has an upper molding groove 4, the upper surface of the lower template has a lower molding groove 3, the upper molding groove 4 of the middle template and the lower molding groove 3 of the lower template form a cavity, and the lower molding groove 3 of the middle template and the upper molding groove 4 of the upper template form a cavity, preferably, the upper molding groove 4 of the middle template is opposite to the lower molding groove 3 of the middle template;

[0025] The outer periphery of each upper molding groove 4 has an upper peripheral pressure-bearing area 5, the outer periphery of each lower molding groove 3 has a lower peripheral pressure-bearing area 6 opposite to the upper peripheral pressure-bearing area 5, the first mold plate 1 is provided with a first injection hole 10, the second mold plate 2 is provided with a second injection hole 21 connected to the first injection hole 10, the third mold plate 11 is provided with a third injection hole 110, the second injection hole 21 is coaxial with the first injection hole 10 and the third injection hole 110 and is connected, the outer periphery of each lower molding groove 3 and the outer periphery of the first injection hole 10 has a lower inner pressure-bearing area 7, and each upper molding groove 3 has a lower inner pressure-bearing area 7. The periphery of the groove 4 and the periphery of the first injection hole 10 have an upper inner pressure zone 8 opposite to the pre-lower inner pressure zone 7, and a leather grain area 12 is provided between each upper outer pressure zone 5 and the upper inner pressure zone 8. An air inlet groove 9 is provided on the lower surface of the second template 2 and the periphery of the upper molding groove 4. The air inlet groove 9 is connected with the leather grain area 12 and extends out of the upper outer pressure zone 5, thereby preventing the product from sticking to the bottom surface of the template (including the second template 2 and the third template 11) during processing, that is, preventing the product from sticking to the bottom of the middle template and the upper template, which is convenient for demolding.

[0026] In some embodiments, preferably, multiple groups of cavities are provided, and the multiple groups of cavities are circumferentially distributed outside the first injection hole 10 and the second injection hole 21, so as to facilitate the injection of materials and increase the processing efficiency.

[0027] In order to prevent the product from sticking to the bottom of the template, preferably, an air inlet groove 9 is opened between any two adjacent groups of cavities, and the upper peripheral pressure-bearing areas 5 on the peripheries of the two adjacent groups of cavities have overlapping parts, and the air inlet groove 9 is opened in the overlapping part of the two adjacent groups of upper peripheral pressure-bearing areas 5.

[0028] In some embodiments, preferably, the air inlet groove 9 is opened on the upper peripheral pressure-bearing area 5, and there is an outer extrusion distance from the air inlet groove 9 to the inner circle of the upper peripheral pressure-bearing area 5 to ensure the product processing quality.

[0029] Preferably, the upper inner pressure-bearing area 8 and the leather grain area 12 have overlapping parts and non-overlapping parts, and the non-overlapping parts are located within the overlapping parts, further preventing the product from sticking to the lower surface of the template.

[0030] Preferably, the surface roughness of the leather grain of the leather grain area 12 overlapping with the upper inner pressure zone 8 is smaller than the roughness of the leather grain area 12 not overlapping with the upper inner pressure zone 8. In this embodiment, the leather grain model of the leather grain area 12 not overlapping with the upper inner pressure zone 8 is 3400-VDI36, and the leather grain model of the leather grain area 12 overlapping with the upper inner pressure zone is 3400-VDI33.

[0031] It should be understood that 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 based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0032] 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.

[0033] 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 one; it can be a mechanical connection, an electrical connection, or communication with each other; 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.

[0034] 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.

[0035] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An injection-type sealing ring mold, comprising a first template (1) and a second template (2), wherein the first template (1) is provided with a lower molding groove (3), and the second template (2) is provided with an upper molding groove (4), wherein a mold cavity is formed between the upper molding groove (4) and the lower molding groove (3), characterized in that: The outer periphery of the upper molding groove (4) has an upper peripheral pressure-bearing area (5), the outer periphery of the lower molding groove (3) has a lower peripheral pressure-bearing area (6) opposite to the upper peripheral pressure-bearing area (5), the first mold plate (1) has a first injection hole (10), the second mold plate (2) has a second injection hole (21) connected to the first injection hole (10), the outer periphery of the lower molding groove (3) and the outer periphery of the first injection hole (10) have a lower inner pressure-bearing area (7 ), the periphery of the upper molding groove (4) and the periphery of the first injection hole (10) have an upper inner pressure zone (8) opposite to the lower inner pressure zone (7), a dermatoglyphic zone (12) is provided between the upper outer pressure zone (5) and the upper inner pressure zone (8), and the periphery of the upper molding groove (4) is provided with an air inlet groove (9), the air inlet groove (9) is connected to the dermatoglyphic zone (12) and the air inlet groove (9) extends out of the upper outer pressure zone (5).

2. The injection seal ring mold according to claim 1, characterized in that: The mold cavities are provided in a plurality of groups, and the plurality of groups of mold cavities are circumferentially distributed outside the first injection hole (10) and the second injection hole (21).

3. The injection seal ring mold according to claim 2, characterized in that: An air inlet groove (9) is provided between any two adjacent groups of the cavities.

4. The injection seal ring mold according to claim 2, characterized in that: The air inlet groove (9) is opened on the upper peripheral pressure-bearing area (5), and there is an outer extrusion distance from the air inlet groove (9) to the inner circle of the upper peripheral pressure-bearing area (5).

5. The injection seal ring mold according to claim 2, characterized in that: The upper inner pressure-bearing area (8) and the dermatoglyphic area (12) have overlapping parts and non-overlapping parts, and the non-overlapping parts are located within the overlapping parts.

6. The injection seal ring mold according to claim 5, characterized in that: The surface roughness of the dermatoglyphics of the overlapping portion of the dermatoglyphics area (12) and the upper inner peripheral pressure-bearing area (8) is smaller than the surface roughness of the portion of the dermatoglyphics area (12) that does not overlap with the upper inner peripheral pressure-bearing area.

7. The injection seal ring mold according to any one of claims 1 to 6, characterized in that: A third template (11) is also provided above the second template (2), a lower molding groove (3) is also provided on the upper surface of the second template (2), an upper molding groove (4) is provided on the lower surface of the third template (11), the upper molding groove (4) of the second template (2) and the lower molding groove (3) of the second template (2) are opposite to each other, the upper molding groove (4) of the third template (11) and the lower molding groove (3) of the second template (2) form a mold cavity, and the third template (11) is provided with a third injection hole (110) which is connected to the first injection hole (10).

8. The injection seal ring mold according to claim 7, characterized in that: The third injection hole is coaxial with the first injection hole (10).

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