Glue and oil sealing structure of four-nozzle cold runner

Abstract

The utility model discloses a glue and oil sealing structure of a four-nozzle cold runner, which comprises a cold runner plate and a nozzle main body, the cold runner plate is provided with runners and mounting holes, the outer surface of the nozzle main body is provided with a connecting disc, the connecting disc is provided with connecting holes, and the glue and oil sealing structure of the four-nozzle cold runner is characterized in that the runners comprise a transverse runner and a vertical runner, a glue injection opening is formed in the top face of the nozzle body, the vertical runner penetrates through the hole bottom of the mounting hole, a connecting screw hole is formed in the hole bottom of the mounting hole, and a connecting screw locks the nozzle body in the mounting hole through cooperation of the connecting hole and the connecting screw hole. And the end surface of the glue injection port is tightly contacted with the hole bottom of the mounting hole through the locking of a connecting screw.

Description

Technical Field

[0001] The utility model relates to an injection mold, in particular to a glue sealing and oil sealing structure for a four-nozzle cold runner. Background Art

[0002] Some injection molds have a cold runner nozzle body for injecting glue into a product cavity. The structure of the nozzle of the cold runner nozzle body includes a warm oil sleeve and a nozzle body. An installation hole and a runner B communicating with the side wall of the installation hole are provided in the cold runner plate, and a glue inlet hole communicating with the runner B is provided on the side wall of the nozzle body. Glue is sprayed into the product cavity from the nozzle of the nozzle body through the glue inlet hole from the runner B.

[0003] A connection disk is provided on the nozzle body, and a screw passes through the connection disk and is fixed in the installation hole. A cooling channel is provided between the warm oil sleeve and the nozzle body. An oil hole C communicating with the cooling channel is provided on the top surface of the connection disk. An oil path D is provided in the cold runner plate, and the outlet of the oil path D is arranged at the bottom of the installation hole and communicates with the oil hole. Oil enters the oil hole C from the oil path D and then flows out from the cooling channel, so as to realize the cooling and temperature reduction of the nozzle body.

[0004] As Figure 5 shown, in the above structure, for the convenience of assembly, the installation hole and the nozzle body are in loose fit, and then the nozzle body is fixed in the installation hole by screws. Therefore, there is a small gap between the runner B and the glue inlet hole A, and this gap cannot be eliminated by the locking force of the screws, resulting in easy glue leakage.

[0005] As Figure 6 shown, and in the above structure, the oil hole C and the oil path D are directly connected hole to hole. Therefore, oil will leak from between the top surface of the connection disk and the bottom surface of the installation hole. Therefore, it is necessary to add a sealing ring between the top surface of the connection disk and the bottom surface of the installation hole, resulting in high assembly difficulty and complexity. Summary of the Utility Model

[0006] In order to overcome the deficiencies of the prior art, the utility model provides a glue sealing and oil sealing structure for a four-nozzle cold runner.

[0007] The technical solution adopted by the utility model to solve its technical problems is:

[0008] A glue-sealing and oil-sealing structure for a four-nozzle cold runner, comprising a cold runner plate and a nozzle body. The cold runner plate is provided with a runner and mounting holes. A connection plate is provided on the outer surface of the nozzle body, and connection holes are provided on the connection plate. It is characterized in that: the runner includes a cross runner and a vertical runner. A glue injection port is provided on the top surface of the nozzle body. The vertical runner penetrates through the bottom of the mounting hole, and a connection screw hole is provided at the bottom of the mounting hole. A connection screw locks the nozzle body in the mounting hole by cooperating with the connection hole, and the end face of the glue injection port is in close contact with the bottom of the mounting hole through the locking of the connection screw.

[0009] The end face of the glue injection port protrudes from the surface of the connection plate.

[0010] It further includes a warm oil sleeve, a pipe joint and an oil pipe. A cooling channel is provided between the warm oil sleeve and the nozzle body. An oil hole communicating with the cooling channel is provided on the side surface of the connection plate. A pipe groove is provided in the cold runner plate. The oil pipe is connected to the oil hole through the pipe joint, and the oil pipe is located in the pipe groove.

[0011] A processing hole communicating with both the oil hole and the cooling channel is provided on the top surface of the connection plate.

[0012] A number of oil channel surfaces, upper oil grooves and lower oil grooves are provided on the nozzle body. The two ends of the upper oil groove and the lower oil groove are respectively connected to the corresponding oil channel surfaces, and the processing hole communicates with the corresponding upper oil groove. The cooling channel is composed of the oil channel surface, the upper oil groove and the lower oil groove and the warm oil sleeve.

[0013] The beneficial effects of the present utility model are as follows: The present utility model redesigned the runner. The runner includes a cross runner and a vertical runner. The vertical runner penetrates through the bottom of the mounting hole. The outlet of the vertical runner is arranged at the bottom of the mounting hole, and the position of the glue injection port is changed to the top surface of the nozzle body. In this way, when the nozzle body is installed in the mounting hole, the glue injection port will communicate with the vertical runner, and the end face of the glue injection port is in close contact with the bottom of the mounting hole through the locking of the connection screw, thereby avoiding the appearance of a gap between the end face of the glue injection port and the bottom of the mounting hole. The above structure is not only convenient for installation, but also makes the end face of the glue injection port in close contact with the bottom of the mounting hole by means of the locking force of the screw to achieve contact sealing between the two, thereby avoiding the problem of glue leakage, and the structure is also simple and easy to process. Description of the Drawings

[0014] The following further describes the present utility model in conjunction with the drawings and embodiments.

[0015] Figure 1 is the assembly structure diagram of the present utility model;

[0016] Figure 2 is the exploded structure diagram of the present utility model;

[0017] Figure 3is a partial sectional view of the present utility model;

[0018] Figure 4 is an exploded view of the nozzle body and the warm oil sleeve of the present utility model;

[0019] Figure 5 is a view of the glue injection structure of the old mold;

[0020] Figure 6 is a view of the oil circuit structure of the old mold. Detailed implementation manners

[0021] The advantages, features, and implementation methods of the present disclosure will be clarified by the following implementation manners described with reference to the accompanying drawings. However, the present disclosure can be embodied in different forms and should not be construed as limited to the implementation manners set forth herein. On the contrary, these implementation manners are provided so that the present disclosure will be comprehensive and complete, and will fully convey the scope of the present disclosure to those skilled in the art. In addition, the present disclosure is only limited by the scope of the claims.

[0022] The shapes, sizes, proportions, angles, and numbers disclosed in the accompanying drawings used to describe the implementation manners of the present disclosure are only examples, so the present disclosure is not limited to the details shown. Throughout this specification, the same reference numerals refer to the same elements. In the following description, when the detailed description of related known functions or configurations is determined to unnecessarily obscure the key points of the present disclosure, the detailed description will be omitted. In the case of using "including", "having", and "comprising" described in this specification, unless "only" is used, other components can be added. Unless otherwise indicated, terms in the singular form can include the plural form.

[0023] When interpreting elements, although not explicitly described, the elements are understood to include an error range.

[0024] When describing positional relationships, for example, when the positional relationship is described as "on...", "above...", "below...", and "adjacent to...", unless "immediately" or "directly" is used, one or more parts can be arranged between two other parts.

[0025] When describing temporal relationships, for example, when the time sequence is described as "after...", "subsequently", "next", and "before...", unless "exactly" or "directly" is used, discontinuous cases can be included.

[0026] It should be understood that although the terms "first", "second", etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from other elements. For example, the first element may be referred to as the second element, and similarly, the second element may be referred to as the first element, without departing from the scope of the present disclosure.

[0027] As can be fully understood by those skilled in the art, the features of different embodiments of the present disclosure can be partially or fully coupled or combined with each other, and can cooperate with each other in various ways and be technically driven. The embodiments of the present disclosure can be executed independently of each other, or can be executed together in a mutually dependent relationship.

[0028] Referring to Figures 1 to 4 , the present utility model discloses a glue sealing and oil sealing structure for a four-nozzle cold runner, including a cold runner plate 1 and a nozzle body 2. There is also an electric heating plate 3 in this application. There are two heat insulation plates 4 between the electric heating plate 3 and the cold runner plate 1. The cold runner plate 1 is provided with a runner and a mounting hole 5. A connection disk 6 is provided on the outer surface of the nozzle body 2. A connection hole 7 is provided on the connection disk 6. The runner includes a cross runner 8 and a vertical runner 9. One end of the cross runner 8 communicates with the outside, and the other end communicates with the vertical runner 9. The other end of the vertical runner 9 penetrates through the bottom of the mounting hole 5. A glue injection port 10 is provided on the top surface of the nozzle body 2. Thus, when the nozzle body 2 is installed in the mounting hole 5, the vertical runner 9 can communicate with the glue injection port 10, so as to introduce the glue from the runner into the glue injection port 10. And a connection screw hole is provided at the bottom of the mounting hole 5. The connection screw passes through the connection hole 7 and cooperates with the connection screw hole to lock the nozzle body 2 in the mounting hole 5. And the end surface of the glue injection port 10 is in close contact with the bottom of the mounting hole 5 through the tightening of the connection screw. Moreover, there are four connection screw holes evenly arranged around the vertical runner 9 in this application. In this way, the tightening force applied to the connection disk 6 when the connection screw is tightened is relatively uniform, so that the contact surface between the connection disk 6 and the mounting hole 5 is also relatively uniform, which is beneficial to sealing contact. In the above structure, the processing of the runner is also easy. The cross runner 8 is processed as before. The vertical runner 9 is drilled from the mounting hole 5 to communicate with the cross runner 8. And the processing of the glue injection port 10 of the nozzle body 2 is simpler than before. A straight hole is directly drilled from the top surface of the nozzle body 2, and one-time processing is required without the need to drill horizontally as before.

[0029] As a preferred structure, the end surface of the glue injection port 10 of the nozzle body 2 protrudes from the surface of the connection disk 6, which avoids the contact between the connection disk 6 and the mounting hole 5. Because the top surface of the connection disk 6 and the bottom area of the mounting hole 5 are large, if the above two need to be in close contact with each other, it will lead to a large amount of processing and great processing difficulty.

[0030] As shown in the figure, it further includes a warm oil sleeve 11, a pipe joint (not shown in the figure) and a oil pipe (not shown in the figure). The warm oil sleeve 11 is a circular pipe with a circular inner hole and is tightly fixed to the nozzle body 2. The above structure is the prior art and will not be described in detail. A cooling channel is provided between the warm oil sleeve 11 and the nozzle body 2. An oil hole 12 communicating with the cooling channel is provided on the side surface of the connecting disk 6. A pipe groove 13 is provided in the cold runner plate 1. The oil pipe is connected to the oil hole 12 through the pipe joint, and the oil pipe is located in the pipe groove 13. In this application, the previous oil circuit is changed to an oil groove, which is easy to process, and the position of the oil hole 12 is changed, which is convenient for connecting with the pipe joint. Moreover, in this application, the oil pipe is connected to the oil hole 12 through the pipe joint, and the sealing performance is good, which avoids the defect of leakage in the previous hole-to-hole connection and does not require a sealing ring for sealing.

[0031] Specifically, a processing hole 14 communicating with both the oil hole 12 and the cooling channel is provided on the top surface of the connecting disk 6, which is convenient for processing. One end of the processing hole 14 is blocked by a sealing plug after assembly. A plurality of oil channel surfaces 15, an upper oil groove 16 and a lower oil groove 17 are provided on the nozzle body 2. The two ends of the upper oil groove 16 and the lower oil groove 17 are respectively connected to the corresponding oil channel surfaces 15, and the processing hole 14 communicates with the corresponding upper oil groove 16. The cooling channel is composed of the oil channel surface 15, the upper oil groove 16, the lower oil groove 17 and the warm oil sleeve 11. The above structure is simple to process, and when the oil flows in the cooling channel, it can contact the nozzle body 2 with the largest area, achieving a good heat exchange effect. Of course, there are two relatively arranged oil holes 12 on the nozzle body 2 of this application, one for inlet and one for outlet, so as to realize the flow of oil.

[0032] The above has introduced in detail a glue-sealing and oil-sealing structure of a four-nozzle cold runner provided by an embodiment of the present invention. Specific examples are used in this article to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. A sealing glue and oil sealing structure for a four-nozzle cold runner, comprising a cold runner plate and a nozzle body, wherein the cold runner plate is provided with a runner and a mounting hole, and the outer surface of the nozzle body is provided with a connecting plate, and the connecting plate is provided with a connecting hole, characterized in that: The flow channel includes a horizontal flow channel and a vertical flow channel. The top surface of the nozzle body is provided with a glue injection port. The vertical flow channel penetrates the bottom of the mounting hole, and the bottom of the mounting hole is provided with a connecting screw hole. The connecting screw cooperates with the connecting screw hole to lock the nozzle body in the mounting hole, and the end surface of the glue injection port is in close contact with the bottom of the mounting hole through the locking of the connecting screw.

2. The glue and oil sealing structure of a four-nozzle cold runner according to claim 1, characterized in that: The end surface of the glue injection port protrudes from the surface of the connecting disk.

3. The glue and oil sealing structure of a four-nozzle cold runner according to claim 1, characterized in that: It also includes a warm oil sleeve, a pipe joint and an oil pipe. A cooling channel is provided between the warm oil sleeve and the nozzle body. An oil hole connected to the cooling channel is provided on the side of the connecting plate. A pipe groove is provided in the cold runner plate. The oil pipe is connected to the oil hole through the pipe joint, and the oil pipe is located in the pipe groove.

4. The glue and oil sealing structure of the four-nozzle cold runner according to claim 3, characterized in that: The top surface of the connecting plate is provided with a processing hole which is connected with both the oil hole and the cooling channel.

5. The glue and oil sealing structure of a four-nozzle cold runner according to claim 4, characterized in that: The nozzle body is provided with a plurality of oil channel surfaces, an upper oil groove and a lower oil groove. The two ends of the upper oil groove and the lower oil groove are respectively connected to the corresponding oil channel surfaces, and the machining hole is connected to the corresponding upper oil groove. The cooling channel is composed of the oil channel surface, the upper oil groove, the lower oil groove and the warm oil jacket.

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