All-in-one hot runner structure applied to injection mold

Abstract

The all-in-one hot runner structure comprises an injection molding cavity, a plurality of sleeves are arranged in the injection molding cavity, the diameters of the sleeves are linearly decreased, the lengths of the sleeves are linearly increased, and a positioning baffle ring is fixedly arranged on the outer surface of one end of the injection molding cavity. The end, away from the positioning baffle ring, of the injection molding cavity extends to form a sealing cover, a positioning rod is arranged in the sealing cover, and the positioning rod is matched with the inner wall of the sleeve with the smallest diameter. The utility model relates to the technical field of injection molding production. According to the all-in-one hot runner structure applied to the injection mold, the single injection molding cavity and the sleeve are arranged and used for adjusting the diameter of the interior of the injection molding cavity, so that when molds of different sizes are mounted, the mounting positions of the different injection molds are the same; and the effect of improving the mounting efficiency and mounting convenience of the injection mold is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding production, in particular to an all-in-one hot runner structure applied to an injection mold. Background Art

[0002] An injection mold is a tool for producing plastic products. It is also a tool that gives plastic products a complete structure and precise dimensions. Injection molding is a processing method used in mass production of certain parts with complex shapes. Specifically, it refers to the process of injecting heated and melted plastic into the mold cavity under high pressure by an injection molding machine, and obtaining a molded product after cooling and solidification.

[0003] Chinese patent publication number CN214872370U discloses an all-in-one hot runner structure for injection molds, including a discharge pipe, both upper and lower ends of the discharge pipe are fixedly connected with auxiliary pipes, the opposite ends of the two auxiliary pipes are fixedly connected with connecting pipes, the right sides of the pipe walls of the two connecting pipes are fixedly connected with a plurality of evenly distributed small injection molding pipes, the right end of the discharge pipe is fixedly connected with a large injection molding pipe, the inside of the two auxiliary pipes are fixedly provided with a first control valve on the opposite side, and the inside of the discharge pipe is located on the right side of the two auxiliary pipes. The second control valve is fixedly provided. The utility model integrates multiple raw material flow channels, and the mold can be replaced without stopping the machine, which improves production efficiency and is convenient to use. At the same time, it can avoid the odor emitted during injection molding from affecting the surrounding air environment, and can shorten the cooling and shaping time to a certain extent.

[0004] In the above patent, by the cooperation of the large injection tube, the support plate and the large mold, the injection molding of a larger mold can be completed, and by the cooperation of the two connecting tubes, the two auxiliary tubes, the multiple small injection tubes and the multiple small molds, the injection molding of multiple smaller molds can be completed at the same time;

[0005] However, this method uses more injection tubes, and the positions of the installation of molds of different sizes are different, so it is inconvenient to replace the mold. Utility Model Content

[0006] In view of the deficiencies in the prior art, the purpose of the present invention is to provide an all-in-one hot runner structure for injection molds, so as to solve the technical problems mentioned in the above background technology.

[0007] The above technical objectives of the utility model are achieved through the following technical solutions:

[0008] A multi-in-one hot runner structure applied to an injection mold comprises an injection cavity, wherein a plurality of sleeves with diameters decreasing linearly are arranged inside the injection cavity, and the lengths of the plurality of sleeves increase linearly, a positioning retaining ring is fixedly arranged on the outer surface of one end of the injection cavity, a closing cover extends from one end of the injection cavity away from the positioning retaining ring, a positioning rod is arranged inside the closing cover, the positioning rod cooperates with the inner wall of the sleeve with the smallest diameter, an injection hole is arranged at the upper end of the injection cavity, and through holes are opened at positions of each sleeve corresponding to the injection hole.

[0009] Furthermore, the inner walls and outer walls of two adjacent sleeves fit each other, and the two sleeves are slidably connected.

[0010] Furthermore, the end wall of the inner side of the closure cover away from the injection cavity is provided with a stepped surface, and when one end of each sleeve contacts the stepped surface, one end of each sleeve away from the stepped surface forms a plane together.

[0011] Furthermore, two positioning holes are provided on one side of the sleeve facing the stepped surface, and guide tubes are provided inside the two positioning holes, and one end of the guide tubes passes through the closing cover.

[0012] Furthermore, a hydraulic pipe is provided at a position of the closing cover corresponding to the guide pipe, and the ends of the hydraulic pipe are connected to a hydraulic pump.

[0013] In summary, the utility model includes at least one of the following beneficial technical effects:

[0014] 1. This all-in-one hot runner structure applied to an injection mold is used to adjust the diameter of the inner wall of the injection cavity through the setting of a single injection cavity and a sleeve, so that when installing molds of different sizes, the installation positions of different injection molds can be the same, so as to achieve the effect of improving the installation efficiency and convenience of the injection mold;

[0015] 2. This multi-in-one hot runner structure applied to the injection mold, due to the different diameters of the feed holes corresponding to the inner cavity size of the injection mold, specifically, the larger the inner cavity of the injection mold, the larger the diameter of the feed hole required, and then by controlling the sleeves at different positions for the effect of the internal volume size of the century-old injection cavity, thereby achieving the effect of controlling the flow path of the material to facilitate the control of the material flow rate, so as to achieve the purpose of making the speed of the material entering proportional to the volume of the inner cavity of the injection mold;

[0016] 3. This multi-in-one hot runner structure used in injection molds, through the setting of hydraulic pumps and hydraulic pipes, passes oil into the guide tube, so that the inside of the guide tube and the positioning hole are filled with oil, so as to achieve the effect of controlling the movement of the sleeve in the injection cavity and the closing cover, and further achieve the purpose of controlling the position of each sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 The utility model is a structural schematic diagram of an all-in-one hot runner structure applied to an injection mold.

[0019] Figure 2 The utility model is a schematic diagram of the structure inside the injection cavity of an all-in-one hot runner structure applied to an injection mold.

[0020] Figure 3 It is a structural schematic diagram of a sleeve and a stepped surface in a state of being fitted together in an all-in-one hot runner structure applied to an injection mold of the utility model.

[0021] Figure 4 The utility model is a structural schematic diagram of a flow path formed by an injection hole and a sleeve of an all-in-one hot runner structure applied to an injection mold.

[0022] In the figure, 1, injection cavity; 2, sleeve; 3, positioning retaining ring; 4, closing cover; 5, positioning rod; 6, injection hole; 7, through hole; 8, stepped surface; 9, positioning hole; 10, guide tube; 11, hydraulic tube. DETAILED DESCRIPTION

[0023] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0024] Example:

[0025] Reference Figure 1-Figure 4 The utility model discloses an all-in-one hot runner structure for injection molds, comprising an injection cavity 1, wherein a plurality of sleeves 2 with diameters decreasing linearly are arranged inside the injection cavity 1, and the lengths of the plurality of sleeves 2 increase linearly, a positioning retaining ring 3 is fixedly arranged on the outer surface of one end of the injection cavity 1, a closing cover 4 is extended from the end of the injection cavity 1 away from the positioning retaining ring 3, a positioning rod 5 is arranged inside the closing cover 4, and the positioning rod 5 cooperates with the inner wall of the sleeve 2 with the smallest diameter, an injection hole 6 is arranged at the upper end of the injection cavity 1, and a through hole 7 is opened at the position of each sleeve 2 corresponding to the injection hole 6.

[0026] In this embodiment, when in use, the injection cavity 1 is connected to the injection molding device, the injection hole 6 is connected to the injection hole 6 of the injection molding device, and one end of the sleeve 2 or one end of the injection cavity 1 is connected to the feed hole of the injection mold, and the material in a molten state is injected into the interior of the injection cavity 1 through the injection molding device, and then the material is introduced into the interior of the injection mold through the feed hole through the injection cavity 1;

[0027] Since the diameter of the feed hole corresponding to the size of the inner cavity of the injection mold is different, specifically, the larger the inner cavity of the injection mold, the larger the diameter of the feed hole required, and then the effect of the internal volume size of the injection cavity 1 is controlled by controlling the sleeve 2 at different positions, such as Figure 4 , thereby achieving the effect of controlling the material flow rate by controlling the material flow path, so as to achieve the purpose of making the material entering speed proportional to the volume of the injection mold cavity;

[0028] In summary, the single injection cavity 1 and sleeve 2 are set to adjust the strong diameter inside the injection cavity 1, so that when installing molds of different sizes, the installation positions of different injection molds can be the same, thereby achieving the effect of improving the installation efficiency and convenience of the injection mold.

[0029] In a further preferred embodiment of the present invention, Figure 1-4 As shown, the inner walls and outer walls of two adjacent sleeves 2 fit each other, and the two sleeves 2 are slidably connected.

[0030] In this embodiment, since the inner tube wall and the outer tube wall of two adjacent sleeves 2 fit each other and the two sleeves 2 are slidably connected, the relative position between the two sleeves 2 can be adjusted to achieve the effect of interconnecting the inner tube cavities of different sleeves 2 and the injection hole 6 through the through hole 7, and the sleeve 2 is interconnected with the feed hole of the injection mold to achieve the use of sleeves 2 of different thicknesses for different injection molds, thereby achieving the purpose of adjusting the thickness of the sleeve 2 according to different injection molds to adjust the injection speed.

[0031] In a further preferred embodiment of the present invention, Figure 1-4 As shown, the inner end wall of the closure cover 4 away from the injection cavity 1 is provided with a stepped surface 8, and when one end of each sleeve 2 contacts the stepped surface 8, the end of each sleeve 2 away from the stepped surface 8 forms a plane together.

[0032] In this embodiment, the step surface 8 is provided to position the sleeve 2 at various positions. When the sleeve 2 is not in use, one end of the sleeve 2 is pushed to contact the step surface 8. Figure 3, so that the sleeve 2 forms a plane on one side of the injection hole 6, so that the injection hole 6 and the injection cavity 1 form a complete passage, so that the injection can enter the injection mold through this passage.

[0033] In a further preferred embodiment of the present invention, Figure 1-4 As shown, two positioning holes 9 are formed on one side of the sleeve 2 facing the step surface 8 , and guide tubes 10 are disposed inside the two positioning holes 9 , one end of the guide tube 10 passes through the closing cover 4 .

[0034] In this embodiment, the guide tube 10 is provided to locate the position of the sleeve 2 so that the axis line of the through hole 7 of the sleeve 2 is always parallel to the axis line of the injection hole 6. In the process of pushing the sleeve 2 to move, the through hole 7 can be effectively made opposite to the injection hole 6, so as to facilitate injection molding into the interior of the sleeve 2 through the injection hole 6 and the through hole 7.

[0035] In a further preferred embodiment of the present invention, Figure 1-4 As shown, a hydraulic pipe 11 is provided at a position of the closing cover 4 corresponding to the guide pipe 10 , and the ends of the hydraulic pipe 11 are connected to a hydraulic pump.

[0036] In this embodiment, the hydraulic pump and the hydraulic pipe 11 are provided to pass the oil into the guide pipe 10, so that the guide pipe 10 and the positioning hole 9 are filled with oil, so as to achieve the effect of controlling the movement of the sleeve 2 in the injection cavity 1 and the closing cover 4, thereby achieving the purpose of controlling the position of each sleeve 2. Figure 4 .

[0037] The embodiments of this specific implementation method are all preferred embodiments of the utility model, and are not intended to limit the protection scope of the utility model. Therefore, all equivalent changes made based on the structure, shape, and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. An all-in-one hot runner structure for injection molds, characterized in that: The invention comprises an injection molding cavity (1), wherein a plurality of sleeves (2) with diameters decreasing linearly are arranged inside the injection molding cavity (1), and the lengths of the plurality of sleeves (2) increase linearly, a positioning retaining ring (3) is fixedly arranged on the outer surface of one end of the injection molding cavity (1), a closing cover (4) extends from the end of the injection molding cavity (1) away from the positioning retaining ring (3), a positioning rod (5) is arranged inside the closing cover (4), and the positioning rod (5) cooperates with the inner wall of the sleeve (2) with the smallest diameter, an injection hole (6) is arranged at the upper end of the injection molding cavity (1), and a through hole (7) is opened at the position of each sleeve (2) corresponding to the injection hole (6).

2. The all-in-one hot runner structure for injection mold according to claim 1, characterized in that: The inner walls and outer walls of two adjacent sleeves (2) fit each other, and the two sleeves (2) are slidably connected.

3. The all-in-one hot runner structure for injection mold according to claim 2, characterized in that: The end wall of the interior of the closure cover (4) which is away from the injection cavity (1) is provided with a stepped surface (8), and when one end of each sleeve (2) contacts the stepped surface (8), the end of each sleeve (2) away from the stepped surface (8) forms a plane together.

4. The all-in-one hot runner structure for injection mold according to claim 3, characterized in that: Two positioning holes (9) are provided on the side of the sleeve (2) facing the stepped surface (8), and guide tubes (10) are provided inside the two positioning holes (9), and one end of the guide tube (10) passes through the closing cover (4).

5. The all-in-one hot runner structure for injection mold according to claim 4, characterized in that: A hydraulic pipe (11) is arranged at a position of the closing cover (4) corresponding to the guide pipe (10), and the ends of the hydraulic pipes (11) are connected to hydraulic pumps.

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