Hot nozzle flange press-fit type connecting structure

Abstract

The utility model belongs to the technical field of hot runners, and particularly relates to a hot nozzle flange press-fit type connecting structure. The flange fixing disc is in threaded connection with the hot nozzle body, and the flange fixing disc is fixedly connected with the splitter plate, so that the hot nozzle body is connected with the splitter plate. Comprising a hot nozzle body, a connecting end is arranged at the end of the hot nozzle body, and the connecting end is matched with a hot nozzle mounting hole of a splitter plate; the connecting end is in threaded connection with a flange fixing disc, and the flange fixing disc is fixed on the splitter plate; and the runner of the hot nozzle body and the runner of the connecting end are communicated with the runner of the splitter plate. The structure can increase the diameter sealing glue of the hot nozzle body, prevents glue leakage, and is convenient to disassemble. The diameter of the hot nozzle body is reduced, raw materials are saved, machining is simple, the length of the hot nozzle body is adjustable, and the length of the hot nozzle is convenient to adjust. If a customer template is overcut and the hot nozzle needs to be shortened, the structure can directly perform secondary processing on the hot nozzle body and adjust the length of the hot nozzle, so that raw materials are saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of hot runner, and particularly relates to a connection structure of press-fitting type for hot nozzle flange. Background Art

[0002] In the existing hot runner system, the commonly used hot nozzle is of screw type, which is fixedly connected to the manifold through screw connection and is used for semi-integral system and integral system. It is convenient to install and can be hoisted as a whole. However, when maintenance and disassembly are required, the external thread of the hot nozzle and the internal thread of the manifold are prone to thread jamming or thread damage. If the external thread of the hot nozzle is damaged, the hot nozzle body needs to be replaced; if the internal thread of the manifold is damaged, the manifold needs to be replaced, resulting in high maintenance costs.

[0003] Therefore, the above problems need to be solved urgently. Summary of the Utility Model

[0004] Aiming at the deficiencies of the existing technology, the utility model provides a connection structure of press-fitting type for hot nozzle flange, which realizes the connection between the hot nozzle body and the manifold by connecting the flange fixing plate with the external thread on the hot nozzle body and fixedly connecting the flange fixing plate with the manifold.

[0005] In order to solve the above technical problems, the technical solutions adopted by the utility model are as follows:

[0006] A connection structure of press-fitting type for hot nozzle flange includes a hot nozzle body. A connection end is provided at the end of the hot nozzle body, and the connection end is matched with the hot nozzle mounting hole of the manifold; a flange fixing plate is threadedly connected to the connection end, and the flange fixing plate is fixed on the manifold; the flow channel of the hot nozzle body, the flow channel of the connection end and the flow channel of the manifold are communicated with each other.

[0007] Further, a central hole for the connection end to pass through is opened in the center of the flange fixing plate, and an internal thread is provided in the central hole; an external thread for cooperating with the internal thread is provided on the connection end.

[0008] Further, a limiting surface is formed circumferentially at the joint of the hot nozzle body and the connection end; a contact surface for contacting and cooperating with the limiting surface is provided at the bottom of the flange fixing plate.

[0009] Further, the radial seal surface of the connection end is tightly pressed and cooperated with the seal surface of the manifold; the axial positioning surface of the connection end is positioned and cooperated with the positioning surface of the manifold.

[0010] Further, screw holes and pin holes are opened on the flange fixing plate; screws are provided in the screw holes to fix the flange fixing plate on the manifold; pins are provided in the pin holes to install the flange fixing plate on the manifold.

[0011] Further, the diameter of the connection end is smaller than the diameter of the hot nozzle body.

[0012] Further, the diameter of the central hole is greater than the diameter of the connecting end, and the diameter of the central hole is less than the diameter of the hot nozzle body.

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

[0014] In this application, by adding a flange fixing plate and fixing it by screwing the flange fixing plate and the hot nozzle body, the way that the external thread of the hot nozzle body is directly connected with the internal thread of the shunt plate mounting hole in the prior art is replaced by an easily replaceable flange fixing plate with threads, thereby reducing the thread damage or glue leakage of the hot nozzle body and the shunt plate caused by thread jamming. This structure can increase the diameter sealing glue of the hot nozzle body, prevent glue leakage, and is convenient for disassembly. The diameter of the hot nozzle body becomes smaller, saving raw materials, simple in processing, and the length of the hot nozzle body is adjustable, facilitating the adjustment of the length of the hot nozzle body. If overcut occurs in the customer's template and the hot nozzle body needs to be shortened, this structure can directly reprocess the hot nozzle body to adjust the length of the hot nozzle body and save raw materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 FIG. is a schematic structural diagram of the connection and cooperation part between the hot nozzle and the shunt plate in the prior art;

[0016] Figure 2 FIG. is a schematic structural diagram of the partial connection and cooperation between the hot nozzle and the shunt plate of the present utility model;

[0017] Figure 3 FIG. is a schematic structural diagram of the shunt plate of the present utility model;

[0018] Figure 4 FIG. is a schematic structural diagram of the flange fixing plate of the present utility model;

[0019] Figure 5 FIG. is a schematic structural diagram of the flange fixing plate of the present utility model;

[0020] Figure 6 FIG. is a schematic structural diagram of the hot nozzle body of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention.

[0023] All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0024] It should be noted that like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not require further definition and explanation in subsequent drawings.

[0025] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention.

[0026] As Figure 1 , when the existing hot nozzle body is installed, the external thread at the end of the hot nozzle body and the internal thread of the manifold plate are fixed and tightened through the wrench position of the hot nozzle body. If there are situations such as thread jamming, thread stripping, and thread damage with glue leakage, it is necessary to replace the hot nozzle body, and when the glue leakage is serious, it will damage the heater thermocouple, resulting in the replacement of more accessories.

[0027] The present invention will be further described in detail below with reference to the drawings.

[0028] As Figure 2 , 3 , shown in 4, 5, 6:

[0029] A thermal nozzle flange press-fitting connection structure includes a thermal nozzle body 1. A connection end 2 is provided at the end of the thermal nozzle body 1, and the connection end 2 is matched with the thermal nozzle mounting hole 31 of the flow distribution plate 3. A flange fixing plate 4 is threadedly connected to the connection end 2, and the flange fixing plate 4 is fixed to the flow distribution plate 3. The flow channel of the thermal nozzle body 1, the flow channel of the connection end 2, and the flow channel of the flow distribution plate 3 are communicated. A central hole 41 for the connection end 2 to pass through is opened in the center of the flange fixing plate 4, and an internal thread 42 is provided in the central hole 41. An external thread 21 is provided on the connection end 2 and is in mating connection with the internal thread 42. Screw holes 44 and pin holes 45 are opened on the flange fixing plate 4. A screw 6 is provided in the screw hole 44 to fix the flange fixing plate 4 to the flow distribution plate 3. A pin 7 is provided in the pin hole 45 to mount the flange fixing plate 4 on the flow distribution plate 3.

[0030] This application cancels the connection method of directly connecting the thermal nozzle body and the flow distribution plate by thread, avoiding the maintenance and replacement caused by the thread biting of the flow distribution plate and the thermal nozzle body, and reducing the maintenance cost. At the same time, the protruding wrench position of the thermal nozzle body in this application is cancelled, making the thread position smaller than the diameter of the thermal nozzle body. The flange fixing plate is threadedly connected to the thermal nozzle body, and then the flange fixing plate is mounted on the flow distribution plate by screws, thereby realizing the connection between the thermal nozzle body and the flow distribution plate, avoiding the thread biting and jamming of the flow distribution plate and the thermal nozzle body, and replacing the flow distribution plate or the thermal nozzle body, and reducing the maintenance cost.

[0031] Further, a limit surface 5 is formed circumferentially at the junction of the thermal nozzle body 1 and the connection end 2. A contact surface 43 that is in contact and cooperation with the limit surface 5 is provided at the bottom of the flange fixing plate 4.

[0032] Further, the radial seal surface 22 of the connection end 2 is in pressing cooperation with the flow distribution plate seal surface 32. The axial positioning surface 23 of the connection end 2 is in positioning cooperation with the flow distribution plate positioning surface 33.

[0033] Further, the diameter of the connection end 2 is smaller than the diameter of the thermal nozzle body 1.

[0034] Further, the diameter of the central hole 41 is larger than the diameter of the connection end 2, and the diameter of the central hole 41 is smaller than the diameter of the thermal nozzle body 1.

[0035] During use, during the injection molding process, the rubber material enters the injection nozzle flow channel through the cooperation of the injection molding machine ball head and the injection nozzle ball head, then enters each thermal nozzle body flow channel through the flow distribution plate flow channel, and then the controller controls the movement of the valve needle to control the feeding to complete the injection molding. Once the thread biting or damage occurs during the use process, only the flange fixing plate needs to be replaced, and the flange fixing plate is used as a standard part for warehousing. If the thread of the thermal nozzle body is damaged, a new thermal nozzle body is replaced for use, and the replaced old thermal nozzle body can be used in a short thermal nozzle environment after repair, and the seal position and thread position can be processed again. This application not only reduces the cost of the thermal nozzle rod material but also greatly improves the maintenance efficiency, saves the maintenance cost for customers, and improves the labor productivity and customer satisfaction.

[0036] The above has given an exemplary description of the present utility model in conjunction with the accompanying drawings. Obviously, the specific implementation of the present utility model is not limited by the above embodiments. Those skilled in the art can make various modifications or variations to the present utility model without departing from the technical concept thereof, and of course these modifications or variations also fall within the protection scope of the present utility model.

Claims

1. A hot nozzle flange press-fit connection structure, characterized in that: The invention comprises a hot nozzle body (1), wherein a connecting end (2) is provided at the end of the hot nozzle body (1), and the connecting end (2) cooperates with a hot nozzle mounting hole (31) of a diverter plate (3); a flange fixing plate (4) is threadedly connected to the connecting end (2), and the flange fixing plate (4) is fixed on the diverter plate (3); and the flow channel of the hot nozzle body (1), the flow channel of the connecting end (2) and the flow channel of the diverter plate (3) are connected.

2. The hot nozzle flange press-fit connection structure according to claim 1, characterized in that: The center of the flange fixing plate (4) is provided with a center hole (41) for the connection end (2) to pass through, and the center hole (41) is provided with an internal thread (42); the connection end (2) is provided with an external thread (21) that cooperates with the internal thread (42).

3. The hot nozzle flange press-fit connection structure according to claim 2, characterized in that: A limiting surface (5) is formed in the circumferential direction at the junction of the hot nozzle body (1) and the connection end (2); and a contact surface (43) that contacts and cooperates with the limiting surface (5) is provided at the bottom of the flange fixing plate (4).

4. The hot nozzle flange press-fit connection structure according to claim 3, characterized in that: The radial sealing surface (22) of the connection end (2) is pressed and matched with the sealing surface (32) of the diverter plate; and the axial positioning surface (23) of the connection end (2) is positioned and matched with the positioning surface (33) of the diverter plate.

5. The hot nozzle flange press-fit connection structure according to claim 1, characterized in that: The flange fixing plate (4) is provided with a screw hole (44) and a pin hole (45); a screw (6) is provided in the screw hole (44) for fixing the flange fixing plate (4) on the diverter plate (3); and a pin (7) is provided in the pin hole (45) for mounting the flange fixing plate (4) on the diverter plate (3).

6. The hot nozzle flange press-fit connection structure according to claim 3, characterized in that: The diameter of the connecting end (2) is smaller than the diameter of the hot nozzle body (1).

7. The hot nozzle flange press-fit connection structure according to claim 3, characterized in that: The diameter of the central hole (41) is larger than the diameter of the connecting end (2), and the diameter of the central hole (41) is smaller than the diameter of the hot nozzle body (1).

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