Hot runner system and hot runner mold

Abstract

The utility model belongs to the field of mold technology, and discloses a hot runner system and a hot runner mold, wherein the hot runner system includes a manifold, the manifold is installed inside the mold, and a plurality of pads are arranged on both sides of the manifold distributed along the thickness direction of the manifold, the pads are connected to the manifold, and a positioning piece is arranged on the pad, the positioning piece protrudes from the side of the pad away from the manifold, and the positioning piece can be plugged into and matched with a positioning hole provided on the mold. The hot runner system of the utility model connects the pad to the manifold, and the positioning between the manifold and the mold is achieved by the positioning piece. When disassembling the manifold, there is no need to connect the manifold with screws, so that the mold can be disassembled and assembled more conveniently. Since the pad is connected to the manifold, it is not easy to lose when disassembling the manifold.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to a hot runner system and a hot runner mold. Background Art

[0002] Hot runner mold refers to a mold that uses a hot runner system to keep the melt in the runner from solidifying. The hot runner system generally includes a manifold, hot nozzles and accessories. The manifold is the central component of the hot runner system, which distributes the plastic melt transmitted from the main runner nozzle to each injection point nozzle through the runner.

[0003] Most of the existing manifolds are assembled in a mold, in which a hot runner frame plate and a fixed plate are provided. The manifold is located between the hot runner frame plate and the fixed plate, and the hot runner frame plate and the manifold, as well as the fixed plate and the manifold are separated by gaskets to prevent the heat of the manifold from being transferred to the hot runner frame plate and the fixed plate. The hot runner frame plate and the fixed plate are detachably connected, and the manifold is locked to the mold by screws, that is, by threading screws on the hot runner frame or the fixed plate, the screws are threadedly connected to the manifold after passing through the gasket, and the manifold is positioned after the screws are tightened.

[0004] When the manifold is fixed in the above manner, the assembly and disassembly of the manifold is rather complicated, which makes the assembly and disassembly of the mold inconvenient. At the same time, part of the gaskets may be lost when the manifold is disassembled. Utility Model Content

[0005] The utility model aims to provide a hot runner system and a hot runner mold, so as to improve the convenience of disassembly and assembly of the mold and prevent the pad from being lost.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] A hot runner system includes a manifold, which is installed inside a mold. A plurality of pads are provided on both sides of the manifold distributed along the thickness direction of the manifold. The pads are connected to the manifold. A positioning piece is provided on the pad. The positioning piece protrudes from the side of the pad away from the manifold. The positioning piece can be plugged into and matched with a positioning hole opened on the mold.

[0008] Preferably, the cushion block comprises:

[0009] a supporting portion, the supporting portion being located on one side of the diverter plate; and

[0010] A locking portion, wherein the locking portion is located on a side of the supporting portion close to the diverter plate, and the locking portion is detachably connected to the diverter plate.

[0011] Preferably, a connecting hole is provided on the diverter plate, the locking portion is threadedly connected to the connecting hole, and the supporting portion abuts against the diverter plate.

[0012] Preferably, a mounting hole is formed on the cushion block along the thickness direction of the diverter plate, the positioning member is located inside the mounting hole, and one end of the positioning member away from the diverter plate extends out of the mounting hole.

[0013] Preferably, a positioning head is provided inside the mounting hole near one end of the diverter plate, the positioning member is slidably provided inside the mounting hole, the positioning member can slide along the axial direction of the mounting hole, and an elastic member is abutted between the positioning head and the positioning member.

[0014] Preferably, when the elastic member is compressed to an extreme state, an end of the positioning member away from the diverter plate can protrude from the cushion block.

[0015] Preferably, the mounting hole passes through the cushion block, the mounting hole is a stepped hole, and an end of the mounting hole close to the manifold is larger than an end away from the manifold;

[0016] The positioning member comprises:

[0017] a main body portion, the main body portion being located inside the mounting hole; and

[0018] A head, one end of the head is connected to one end of the main body away from the manifold, the other end of the head extends out of the mounting hole, the cross-sectional area of ​​the head is smaller than the cross-sectional area of ​​the main body, so that a step surface is formed at the connection between the main body and the head, and the step surface abuts against the step inside the mounting hole.

[0019] Preferably, one end of the head portion away from the main body portion is arranged in an arc shape.

[0020] Preferably, a heat-insulating groove is provided on a side of the gasket close to the diverter plate and a side of the gasket away from the diverter plate.

[0021] A hot runner mold, wherein the hot runner mold comprises a hot runner system.

[0022] Beneficial effects of the utility model:

[0023] The hot runner system of the utility model connects the gasket to the manifold plate, and realizes the positioning of the manifold plate by plugging and cooperating with the positioning hole on the mold through the positioning piece. When installing the manifold plate, the manifold plate is first positioned on the hot runner plate, and then the fixed plate is positioned on the manifold plate, and the fixed plate is installed. There is no need to connect the manifold plate with screws, which makes it more convenient to disassemble and assemble the mold. Since the gasket is connected to the manifold plate, the gasket is not easy to be lost when the manifold plate is disassembled. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a cross-sectional view of the hot runner mold of the utility model excluding the mold body;

[0025] Figure 2 yes Figure 1 Enlarged view of point A in the middle.

[0026] In the figure:

[0027] 1. Manifold; 11. Connecting hole; 2. Cushion block; 21. Support part; 22. Locking part; 23. Mounting hole; 24. Heat insulation groove; 3. Positioning piece; 31. Main body; 311. Limiting groove; 32. Head; 33. Step surface; 41. Positioning head; 42. Elastic part; 5. Hot runner frame plate; 51. Bottom plate; 52. Support plate; 6. Fixing plate; 7. Positioning hole. DETAILED DESCRIPTION

[0028] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0029] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" 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. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0031] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0032] Refer to the following Figure 1 to Figure 2 The hot runner system and the hot runner mold provided by the utility model are described.

[0033] The hot runner mold includes a mold body (not shown in the figure), a hot runner frame plate 5, a fixed plate 6 and a hot runner system. In this embodiment, the mold body is an injection mold that performs mold splitting and mold closing in the vertical direction. Specifically, the hot runner frame plate 5 includes a base plate 51 and a support plate 52. The base plate 51 is horizontally arranged and installed on the top of the mold body. Two support plates 52 are vertically arranged, and the support plates 52 are connected to the top of the base plate 51.

[0034] Furthermore, the fixing plate 6 is horizontally arranged and located at the top of the hot runner frame plate 5, and the fixing plate 6 is connected to the top of the support plate 52, so that the hot runner frame plate 5 and the fixing plate 6 enclose an installation space, and a plurality of positioning holes 7 are provided on the sides where the bottom plate 51 and the fixing plate 6 are close to each other. The hot runner system is installed on the hot runner frame plate 5.

[0035] It should be noted that in other optional embodiments, the mold body can also be an injection mold that can be split and closed in the horizontal direction. The hot runner frame plate 5 and the fixed plate 6 can be sequentially connected to the mold body in the horizontal direction, and the specific form is not limited.

[0036] The hot runner system includes a manifold 1, which is located between a hot runner frame plate 5 and a fixed plate 6, that is, the manifold 1 is located inside the installation space, and a plurality of pads 2 are arranged on both sides of the manifold 1 distributed along the thickness direction of the manifold 1, that is, a plurality of pads 2 are arranged on the top and bottom of the manifold 1, and a positioning piece 3 is arranged on each pad 2, and the positioning piece 3 protrudes from the side of the pad 2 away from the manifold 1, and the positioning piece 3 can be plugged into and matched with the positioning hole 7.

[0037] The pad 2 is directly connected to the manifold plate 1, and the positioning piece 3 on the pad 2 cooperates with the positioning hole 7 to realize the positioning of the manifold plate 1. When installing the manifold plate 1, the manifold plate 1 is first positioned on the hot runner plate, and then the fixed plate 6 is positioned on the manifold plate 1, and the fixed plate 6 is installed, which makes the disassembly and assembly of the hot runner mold more convenient and improves the production efficiency.

[0038] Further, the pad 2 includes a support portion 21 and a locking portion 22, and the support portion 21 is located on one side of the diverter plate 1. The locking portion 22 is located on the side of the support portion 21 close to the diverter plate 1, and the locking portion 22 is detachably connected to the diverter plate 1. By way of example, in this embodiment, a connecting hole 11 is provided on the diverter plate 1 corresponding to each locking portion 22, the locking portion 22 is threadedly connected to the connecting hole 11, and the support portion 21 abuts against the diverter plate 1 to realize the detachable connection between the pad 2 and the diverter plate 1, which not only prevents the pad 2 from being easily separated from the diverter plate 1 when the diverter plate 1 is disassembled, but also facilitates the replacement of the pad 2.

[0039] In addition, each gasket 2 is provided with a mounting hole 23, which is opened along the thickness direction of the diverter plate 1, passes through the gasket 2, and is a stepped hole, and the end of the mounting hole 23 close to the diverter plate 1 is larger than the end away from the diverter plate 1.

[0040] Specifically, the positioning member 3 includes a main body 31 and a head 32. The main body 31 is located inside the mounting hole 23. One end of the head 32 is connected to the end of the main body 31 away from the diverter plate 1. The other end of the head 32 extends out of the mounting hole 23, so that the positioning member 3 protrudes from the cushion block 2, which facilitates the other end of the head 32 to be plugged into the positioning hole 7 to achieve the positioning of the cushion block 2. The main body 31 and the head 32 are coaxially arranged cylinders, and the diameter of the head 32 is smaller than the diameter of the main body 31, so that the cross-sectional area of ​​the head 32 is smaller than the cross-sectional area of ​​the main body 31, so that a step surface 33 is formed at the connection between the main body 31 and the head 32. The other end of the head 32 is arranged in an arc surface, so that when the head 32 is plugged into the positioning hole 7, it has a guiding effect on the head 32.

[0041] It should be noted that, in other optional embodiments, the positioning member 3 may also be fixedly connected to the surface of the cushion block 2 so that the positioning member 3 protrudes from the cushion block 2 .

[0042] Furthermore, a positioning head 41 is provided at one end of the mounting hole 23 near the manifold 1, and the positioning head 41 is threadedly connected to the side wall of the mounting hole 23, thereby realizing the positioning of the positioning head 41, and facilitating the removal of the positioning head 41 and replacement of the positioning member 3. The main body 31 is slidably provided inside the mounting hole 23, and the main body 31 can slide along the axial direction of the mounting hole 23, and an elastic member 42 is abutted between the positioning head 41 and the main body 31.

[0043] Optionally, the elastic member 42 is an elastic component such as a spring or a rubber column. In this embodiment, a spring is taken as an example. One end of the spring abuts against the positioning head 41, and a limiting groove 311 is provided in the main body 31 near the other end of the spring. The other end of the spring is plugged into and fits with the limiting groove 311 and abuts against the bottom of the limiting groove 311, so that the limiting groove 311 has a limiting effect on the other end of the spring.

[0044] Based on the above, when the spring is compressed but not compressed to the limit state, the step surface 33 of the positioning member 3 abuts against the step inside the mounting hole 23, and the head 32 of the positioning member 3 is limited by the step inside the mounting hole 23, so that the positioning member 3 as a whole is not easy to separate from the mounting hole 23, and always protrudes a certain length of the mounting hole 23, and the length of the head 32 extending from the pad 2 is greater than the depth of the positioning hole 7, that is, when the diverter plate 1 is installed between the hot runner frame plate 5 and the fixed plate 6, the pad 2 at the bottom of the diverter plate 1 elastically abuts against the hot runner frame plate 5, and the pad 2 at the top of the diverter plate 1 elastically abuts against the fixed plate 6, thereby increasing the friction between the hot runner frame plate 5 and the fixed plate 6 and the diverter plate 1, and the diverter plate 1 is not easy to move during operation, which can improve the positioning accuracy of the diverter plate 1, make the matching accuracy of the glue port higher, and prevent burrs at the glue port.

[0045] In addition, when the elastic member 42 is compressed to the limit state, the head 32 of the positioning member 3 can protrude from the pad 2 at one end away from the diverter plate 1, and the protruding length is 1-2 mm. Therefore, when installing the diverter plate 1, it is possible to observe whether the head 32 enters the interior of the positioning hole 7, and adjust the position of the diverter plate 1 in time to ensure the positioning effect of the diverter plate 1.

[0046] In addition, if the gasket 2 is made of a material that can be deformed by the squeezing force of the hot runner frame plate 5 and the fixed plate 6, such as wood material or hard rubber, when the gasket 2 is deformed, the diverter plate 1 will be interference fit between the hot runner frame plate 5 and the fixed plate 6, making the diverter plate 1 more firmly fixed.

[0047] Furthermore, the gasket 2 has a heat insulation groove 24 on one side close to the manifold plate 1 and on the other side away from the manifold plate 1, that is, the bottom and the top of the gasket 2 have heat insulation grooves 24, and there are multiple heat insulation grooves 24. The heat insulation grooves 24 are used to reduce the heat transferred from the manifold plate 1 to the gasket 2 and the heat transferred from the gasket 2 to the hot runner frame plate 5 and the fixed plate 6.

[0048] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A hot runner system, comprising a manifold (1), wherein the manifold (1) is installed inside a mold, and is characterized in that: A plurality of pads (2) are provided on both sides of the diverter plate (1) distributed along the thickness direction of the diverter plate (1); the pads (2) are connected to the diverter plate (1); a positioning piece (3) is provided on the pads (2); the positioning piece (3) protrudes from the side of the pads (2) away from the diverter plate (1); the positioning piece (3) can be plugged into and matched with a positioning hole (7) provided on the mold.

2. The hot runner system according to claim 1, characterized in that: The cushion block (2) comprises: a supporting portion (21), the supporting portion (21) being located on one side of the diverter plate (1); and A locking portion (22), the locking portion (22) being located on a side of the supporting portion (21) close to the diverter plate (1), and the locking portion (22) being detachably connected to the diverter plate (1).

3. The hot runner system according to claim 2, characterized in that: The diverter plate (1) is provided with a connection hole (11), the locking portion (22) is threadedly connected to the connection hole (11), and the supporting portion (21) is in abutment with the diverter plate (1).

4. The hot runner system according to claim 1, characterized in that: The cushion block (2) is provided with a mounting hole (23) along the thickness direction of the diverter plate (1); the positioning member (3) is located inside the mounting hole (23); and one end of the positioning member (3) away from the diverter plate (1) extends out of the mounting hole (23).

5. The hot runner system according to claim 4, characterized in that: A positioning head (41) is provided inside the mounting hole (23) near one end of the diverter plate (1); the positioning member (3) is slidably provided inside the mounting hole (23); the positioning member (3) is capable of sliding along the axial direction of the mounting hole (23); and an elastic member (42) is abutted between the positioning head (41) and the positioning member (3).

6. The hot runner system according to claim 5, characterized in that: When the elastic member (42) is compressed to an extreme state, the end of the positioning member (3) away from the diverter plate (1) can protrude from the cushion block (2).

7. The hot runner system according to claim 6, characterized in that: The mounting hole (23) passes through the cushion block (2), the mounting hole (23) is a stepped hole, and an end of the mounting hole (23) close to the diverter plate (1) is larger than an end away from the diverter plate (1); The positioning member (3) comprises: a main body (31), the main body (31) being located inside the mounting hole (23); and A head portion (32), one end of the head portion (32) is connected to an end of the main body portion (31) facing away from the manifold (1), the other end of the head portion (32) extends out of the mounting hole (23), the cross-sectional area of ​​the head portion (32) is smaller than the cross-sectional area of ​​the main body portion (31), so that a step surface (33) is formed at the connection between the main body portion (31) and the head portion (32), and the step surface (33) abuts against the step inside the mounting hole (23).

8. The hot runner system according to claim 7, characterized in that: One end of the head portion (32) away from the main body portion (31) is arranged in the form of an arc surface.

9. The hot runner system according to claim 1, characterized in that: The cushion block (2) is provided with a heat insulation groove (24) on both the side close to the diverter plate (1) and the side away from the diverter plate (1).

10. Hot runner mold, characterized in that: The hot runner mold comprises the hot runner system according to any one of claims 1-9.

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