Hot runner with variable glue inlet points

Abstract

The utility model discloses a hot runner with a variable glue inlet point, which is characterized in that a transverse main sub-runner is arranged in the middle of a main splitter plate, a downward main runner is arranged in the middle of the upper end of the main splitter plate, the main runner is communicated with the main sub-runner, an injection nozzle is arranged at the opening part of the main runner, a hot nozzle is arranged on an auxiliary splitter plate, and an auxiliary sub-runner is arranged in the middle of the auxiliary splitter plate. An adjusting pipe is arranged between the auxiliary splitter plate and the main splitter plate, one end of the adjusting pipe is inserted into the main sub-runner and can slide relative to the main sub-runner, and a fastening part and a sealing sleeve are arranged on the adjusting pipe. The adjusting pipe is coaxially communicated with the inside of the pouring gate, so that internal pressure leakage of the pouring gate is reduced, the problem of internal pressure leakage of the pouring gate caused by additional arrangement of a communication channel is avoided, stable mold filling pressure in the hot runner is ensured, a glue inlet point can be randomly adjusted within the length range of the adjusting pipe, the glue inlet point can be better matched with a mold, and the service life of the hot runner is prolonged. And the applicable mold is wider, and the use requirement can be better met.

Description

Technical Field

[0001] The utility model relates to the technical field of hot runner processing, in particular to a hot runner with a variable glue feeding point. Background Art

[0002] At present, injection molding technology has become a very important production method in industrial production. It has the advantages of fast production speed, high efficiency, and precise size. It is widely used in the molding production of plastic parts. The manifold in the injection mold is also called the hot runner manifold. It is the central component of the hot runner structure with variable injection points in multi-cavity molds. It distributes the plastic melt transmitted from the main channel nozzle to each injection point nozzle through the runner. The manifold can make the mold cavity evenly filled, the plastic flow balanced, and the system heat balanced.

[0003] The utility model patent with application number 201220481042.8 discloses a hot runner structure with variable glue feed point. It includes a manifold with a hot runner inside, a heat insulation meson installed on the manifold, the outlet of the hot runner in the manifold is connected to the hot nozzle, a glue feed point adjustment insert is provided between the hot runner outlet and the hot nozzle, and an oblique channel connecting the hot flow pipe outlet and the hot nozzle is provided in the glue feed point adjustment insert. When the hot runner structure with variable glue feed point of the utility model is used, when there is a slight difference between the glue feed points of the products to be processed, the glue feed point adjustment insert of the oblique channel with different angles can be replaced on the basis of the original manifold, hot nozzle and other components to achieve adaptation with the product without re-manufacturing a new set of molds. Since most of the components do not need to be repeatedly developed, the development cycle can be greatly accelerated and the development cost can be greatly reduced.

[0004] In the prior art of the above patent, an oblique channel is provided on the manifold, and the hot runner of the manifold is connected with the hot nozzle through the oblique channel. When the hot nozzle slides, the position of the hot nozzle on the manifold is changed by replacing the oblique channel. However, due to the gaps easily left at the installation connection points at both ends of the additional oblique channel, the hot runner leaks, which leads to insufficient filling pressure of the hot runner. In addition, the glue feeding point is limited by the inclination angle of the oblique channel, and the adjustment range is greatly limited, which cannot meet the use requirements well.

[0005] Therefore, those skilled in the art provide a hot runner with a variable glue feed point to solve the problems raised in the above background technology. Utility Model Content

[0006] In order to solve the above technical problems, the utility model provides a hot runner with a variable glue feeding point, wherein a transverse main diverter is opened in the middle of the main diverter plate, a downward main flow channel is opened in the middle of the upper end of the main diverter plate, the main flow channel is connected to the main diverter, an injection nozzle is arranged at the mouth of the main flow channel, a hot nozzle is arranged on the auxiliary diverter plate, an auxiliary diverter is opened in the middle of the auxiliary diverter plate, the auxiliary diverter is connected to the hot nozzle, an adjusting tube is arranged between the auxiliary diverter plate and the main diverter plate, one end of the adjusting tube is inserted into the main diverter and can slide relative to the main diverter, a fastening component and a sealing sleeve are arranged on the adjusting tube, the fastening component is threadedly connected to the main diverter plate, and the sealing sleeve is used to seal the gap between the adjusting tube and the main diverter.

[0007] Preferably, the fastening component comprises a threaded sleeve, a rotating sleeve is fixedly arranged at one end of the threaded sleeve, the rotating sleeve is a hexagonal sleeve, and the rotating sleeve is conveniently rotated using a hexagonal wrench, and a tapered portion is fixedly arranged at the other end of the threaded sleeve.

[0008] Preferably: a matching hole is provided on the main diverter plate at the outer end of the main diverter channel, the outer section of the matching hole is a threaded hole matching with the screw sleeve, the middle section of the matching hole is a tapered hole matching with the tapered portion on the screw sleeve, and the rear section of the matching hole is a hole groove matching with the sealing sleeve; when the screw sleeve is rotated inward by rotating the sleeve, the end of the tapered portion on the screw sleeve squeezes the sealing sleeve, and the squeezed and deformed sealing sleeve is tightly attached to the outer wall of the adjusting tube and the inner wall of the matching hole, thereby improving the sealing of the connection.

[0009] Preferably, elastic grooves are provided at equal intervals on the tapered portion at one end of the screw sleeve, and the elastic grooves are provided to facilitate the extrusion deformation of the tapered portion at one end of the screw sleeve, so that the tapered portion can better clamp the adjusting tube when squeezed by the tapered hole.

[0010] Preferably: a tapered hole is provided at one end of the regulating tube located in the main diversion channel, and the tapered hole is connected to the central hole of the regulating tube, so as to facilitate the injection molding material to smoothly enter the regulating gate; a tapered head is provided at the other end of the regulating tube, an annular groove is provided on the tapered head, a sealing ring is sleeved in the annular groove, a fixing flange is provided on the regulating tube at the tapered head, and the fixing flange is fixedly connected to the auxiliary diversion plate by fixing screws.

[0011] Preferably, a matching taper hole is provided at the outer end of the secondary diverter channel on the secondary diverter plate, and the matching taper hole matches with the taper head at the end of the regulating tube.

[0012] Technical effects and advantages of the utility model:

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The regulating tube provided in the utility model is coaxially connected to the runner to reduce the leakage of the internal pressure of the runner, avoid the problem of internal pressure leakage of the runner caused by the additional connection channel, ensure the stability of the filling pressure in the hot runner, and the glue feeding point can be adjusted at will within the length range of the regulating tube, which can better cooperate with the mold, is applicable to a wider range of molds, and can better meet the use requirements.

[0015] 2. The rear section of the matching hole provided in the utility model is a hole groove matching with the sealing sleeve; when the screw sleeve is rotated inward by the rotating sleeve, the end of the tapered part of the screw sleeve squeezes the sealing sleeve, and the squeezed and deformed sealing sleeve is tightly attached to the outer wall of the adjusting tube and the inner wall of the matching hole, thereby improving the sealing of the connection.

[0016] 3. The utility model provides elastic grooves at equal intervals on the tapered portion at one end of the screw sleeve. The elastic grooves are provided to facilitate the extrusion deformation of the tapered portion at one end of the screw sleeve, so that the tapered portion can better clamp the adjusting tube when squeezed by the tapered hole, and can further position the adjusting tube, thereby ensuring the stability of the positioning of the glue feeding point. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the structure of a hot runner with a variable glue feed point provided in an embodiment of the present application;

[0018] Figure 2 It is a schematic diagram of the installation structure of the regulating tube in the hot runner with a variable glue feeding point provided in an embodiment of the present application;

[0019] Figure 3 It is a structural diagram of an adjusting tube in a hot runner with a variable glue feed point provided in an embodiment of the present application;

[0020] Figure 4 is a side view of a fastening component in a hot runner with a variable glue feed point provided in an embodiment of the present application;

[0021] Figure 5 It is a structural diagram of a sealing ring in a hot runner with a variable glue feed point provided in an embodiment of the present application.

[0022] Among them: regulating pipe 1, main diverter plate 2, auxiliary diverter plate 3, fixed flange 4, main diverter channel 5, screw sleeve 6, sealing sleeve 7, tapered hole 8, sealing ring 9, fixing screw 10, elastic groove 11, rotating sleeve 12. DETAILED DESCRIPTION

[0023] The present invention is further described in detail below in conjunction with specific implementation methods. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific purposes.

[0024] Example 1

[0025] See also Figure 1-5 In this embodiment, a hot runner with a variable injection point is provided, including a main manifold plate 2 and an auxiliary manifold plate 3. A transverse main manifold 5 is provided in the middle of the main manifold plate. A downward main flow channel is provided in the middle of the upper end of the main manifold plate 2. The main flow channel is connected to the main manifold 5. An injection nozzle is provided at the mouth of the main flow channel. A hot nozzle is provided on the auxiliary manifold plate 3. An auxiliary manifold is provided in the middle of the auxiliary manifold plate 3. The auxiliary manifold is connected to the hot nozzle. An adjusting tube 1 is provided between the auxiliary manifold plate 3 and the main manifold plate 2. One end of the adjusting tube 1 is inserted into the main manifold 5 and can slide relative to the main manifold 5. A fastening component and a sealing sleeve 7 are provided on the regulating tube 1, the fastening component is threadedly connected to the main diverter plate 2, and the sealing sleeve 7 is used to seal the gap between the regulating tube 1 and the main diverter channel 5; the regulating tube 1 is coaxially connected to the runner to reduce the leakage of the internal pressure of the runner, avoid the problem of leakage of the internal pressure of the runner caused by the additional connection channel, ensure the stability of the filling pressure in the hot runner, and the glue feeding point can be adjusted at will within the length range of the regulating tube 1, which can better cooperate with the mold, is applicable to a wider range of molds, and can better meet the use requirements.

[0026] The fastening component includes a threaded sleeve 6, one end of which is fixedly provided with a rotating sleeve 12, which is a hexagonal sleeve, and is convenient for rotating the rotating sleeve 12 using a hexagonal wrench, and the other end of the threaded sleeve 6 is fixedly provided with a tapered portion.

[0027] A matching hole is arranged on the main diverter plate 2 at the outer end of the main diverter channel 5, the outer section of the matching hole is a threaded hole matching with the screw sleeve, the middle section of the matching hole is a tapered hole matching with the tapered portion on the screw sleeve 6, and the rear section of the matching hole is a hole groove matching with the sealing sleeve 7; when the screw sleeve 6 is rotated inward by the rotating sleeve 12, the end of the tapered portion on the screw sleeve 6 squeezes the sealing sleeve 7, and the squeezed and deformed sealing sleeve 7 is tightly attached to the outer wall of the regulating tube 1 and the inner wall of the matching hole, thereby improving the sealing performance of the connection.

[0028] Elastic grooves 11 are arranged at equal intervals on the tapered portion at one end of the screw sleeve 6. The elastic grooves 11 are arranged to facilitate the extrusion deformation of the tapered portion at one end of the screw sleeve 6, so that the tapered portion can better clamp the adjusting tube 1 when being squeezed by the tapered hole, and the adjusting tube 1 can be further positioned to ensure the stability of the positioning of the glue feeding point.

[0029] A tapered hole 8 is provided at one end of the regulating tube 1 located in the main branch channel 5, and the tapered hole 8 is connected to the central hole of the regulating tube 1, so as to facilitate the injection molding material to smoothly enter the regulating channel. A tapered head is provided at the other end of the regulating tube 1, and an annular groove is provided on the tapered head. A sealing ring 9 is sleeved in the annular groove. A fixing flange 4 is provided at the tapered head on the regulating tube 1, and the fixing flange 4 is fixedly connected to the auxiliary branch plate 3 by fixing screws 10.

[0030] A matching tapered hole is formed at the outer end of the secondary flow distribution channel on the secondary flow distribution plate 3 , and the matching tapered hole matches with the tapered head at the end of the regulating tube 1 .

[0031] In Example 1, the control device that enables the device to work and its supporting control system, switch, and drive module are provided by the corresponding manufacturers. In addition, the power supply module, circuit, electronic components, and control module involved in the utility model are all prior art and can be fully implemented by those skilled in the art. Needless to say, the content protected by the utility model does not involve improvements to the internal structure and methods.

[0032] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. Structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to conventional means in the field unless otherwise specified and limited.

Claims

1. A hot runner with a variable glue feed point, comprising a main manifold (2) and an auxiliary manifold (3), characterized in that: A transverse main flow channel (5) is provided in the middle of the main flow channel, a downward main flow channel is provided in the middle of the upper end of the main flow channel (2), the main flow channel is connected to the main flow channel (5), an injection nozzle is provided at the mouth of the main flow channel, a hot nozzle is provided on the auxiliary flow channel (3), an auxiliary flow channel is provided in the middle of the auxiliary flow channel (3), the auxiliary flow channel is connected to the hot nozzle, an adjusting tube (1) is provided between the auxiliary flow channel (3) and the main flow channel (2), one end of the adjusting tube (1) is inserted into the main flow channel (5) and can slide relative to the main flow channel (5), a fastening component and a sealing sleeve (7) are provided on the adjusting tube (1), the fastening component is threadedly connected to the main flow channel (2), and the sealing sleeve (7) is used to seal the gap between the adjusting tube (1) and the main flow channel (5).

2. A hot runner with a variable glue feed point according to claim 1, characterized in that: The fastening component comprises a screw sleeve (6), a rotating sleeve (12) is fixedly arranged at one end of the screw sleeve (6), the rotating sleeve (12) is a hexagonal sleeve, and the rotating sleeve (12) can be conveniently rotated using a hexagonal wrench, and a tapered portion is fixedly arranged at the other end of the screw sleeve (6).

3. The hot runner with variable glue feed point according to claim 1, characterized in that: A matching hole is provided on the main flow dividing plate (2) at the outer end of the main flow dividing channel (5), the outer section of the matching hole is a threaded hole matching with the screw sleeve, the middle section of the matching hole is a tapered hole matching with the tapered portion on the screw sleeve (6), and the rear section of the matching hole is a hole groove matching with the sealing sleeve (7).

4. A hot runner with a variable glue feed point according to claim 2, characterized in that: Elastic grooves (11) are arranged at equal intervals on the tapered portion at one end of the screw sleeve (6).

5. The hot runner with variable glue feed point according to claim 1, characterized in that: A tapered hole (8) is provided at one end of the regulating tube (1) located in the main flow channel (5), and the tapered hole (8) is communicated with the central hole of the regulating tube (1), so as to facilitate the smooth entry of the injection molding material into the regulating tube. A tapered head is provided at the other end of the regulating tube (1), and an annular groove is provided on the tapered head. A sealing ring (9) is sleeved in the annular groove. A fixing flange (4) is provided at the tapered head on the regulating tube (1), and the fixing flange (4) is fixedly connected to the auxiliary flow channel plate (3) by fixing screws (10).

6. The hot runner with variable glue feed point according to claim 1, characterized in that: A matching taper hole is provided at the outer end of the auxiliary flow channel on the auxiliary flow dividing plate (3), and the matching taper hole matches with the taper head at the end of the regulating pipe (1).

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