Glue injection assembly and injection molding machine comprising same

Abstract

The utility model relates to the technical field of injection molding equipment, and discloses a glue injection assembly and an injection molding machine comprising the same, the injection molding machine comprises an equipment main body and a glue injection assembly, and the glue injection assembly is fixedly arranged on the equipment main body. The glue injection assembly comprises a flange, a nozzle and a filter screen. The filter screen is arranged to be of the cylindrical structure composed of the side wall and the bottom wall, and compared with a plane filter structure, the filter area of the filter screen is effectively increased, the glue passing amount is increased, and the blocking possibility is reduced. The positioning ring and the positioning block are arranged to position and stabilize the filter screen, so that the filter screen is not easy to deform and damage under the high pressure of sol feeding of the injection molding machine, and the problems of deformation and damage of the filter structure can be reduced or even avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding equipment, in particular to a glue injection component and an injection molding machine containing the same. Background Art

[0002] An injection molding machine, also known as an injection molding machine, is a mechanical device used to manufacture plastic parts. Injection molding machines come in a variety of types and sizes to suit the production needs of different products. They are widely used to manufacture a variety of plastic products, such as automotive parts, household appliances, packaging materials, and toys. They heat and compress the plastic material to form it in a mold. The injection unit is the core component of the injection molding machine and consists of a plasticizing system and an injection system. The plasticizing system heats and plasticizes the plastic granules or powder into a molten state, while the injection system injects the molten plastic into the mold at high pressure.

[0003] Because the molten rubber may contain some large particles or impurities, the injection assembly typically includes a filter structure to filter the molten rubber during injection to prevent impurities from entering the mold and causing damage or clogging, as well as to prevent impurities from affecting product quality. However, due to the relatively thick rubber, filtering is difficult and the high pressure of glue feeding. Combined with the presence of impurities and particles, existing planar filter structures are prone to clogging, which can significantly reduce the glue feeding volume at best, or even cause deformation, damage, and failure of the filter structure due to the high pressure.

[0004] Contents of this utility model

[0005] The technical problem solved by the utility model is that the existing plane filter structure has insufficient glue passing capacity and is easily deformed and damaged.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] A glue injection component, comprising:

[0008] A flange, wherein a glue injection channel is provided in the flange;

[0009] A nozzle, the nozzle being fixedly connected to the flange, a glue injection chamber being provided in the nozzle and communicating with the glue injection channel, and a step portion being provided on an inner wall of the nozzle;

[0010] A filter screen is arranged in the glue injection chamber, and the filter screen includes a bottom wall and a side wall connected as a whole, and a plurality of filter holes are respectively provided on the bottom wall and the side wall. A plurality of positioning blocks are fixedly arranged at intervals on the outer side of one end of the side wall close to the bottom wall, and a positioning ring is fixedly arranged on the end of the side wall away from the bottom wall, and the positioning ring is used to cooperate with the step portion.

[0011] In one solution of the present invention, the positioning blocks are evenly distributed along the circumference of the side wall.

[0012] In one solution of the present invention, an arc-shaped glue channel is formed between two adjacent positioning blocks.

[0013] In one embodiment of the present invention, the side walls are enclosed to form a cylindrical shape.

[0014] In one solution of the present invention, a tapered transition cavity is provided inside one end of the side wall away from the bottom wall.

[0015] In one solution of the present invention, a connecting piece is provided between the nozzle and the flange, connecting heads are provided at both ends of the connecting piece, and connecting holes are respectively provided on the nozzle and the flange.

[0016] In one solution of the present invention, the connector is provided with an external thread, and the connecting hole is provided with an internal thread.

[0017] In one solution of the present invention, a rotating head is integrally provided on the connecting head.

[0018] In one solution of the present invention, one end of the nozzle is conical and has a glue injection hole, and the other end is integrally provided with a nut head.

[0019] An injection molding machine comprises an equipment main body and the above-mentioned glue injection assembly, wherein the glue injection assembly is fixedly mounted on the equipment main body.

[0020] According to the present invention, a glue injection component and an injection molding machine containing the same have at least one of the following technical effects:

[0021] The filter is set into a cylindrical structure consisting of side walls and bottom walls. Compared with the flat filter structure, it effectively increases the filter area of ​​the filter, increases the glue passing capacity, and reduces the possibility of clogging.

[0022] The positioning ring and the positioning block can position and stabilize the filter, making the filter less likely to deform or be damaged under the high pressure of the sol feed of the injection molding machine, thereby reducing or even avoiding the problem of deformation and damage of the filter structure.

[0023] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0025] Figure 1This is a three-dimensional structural diagram of the glue injection component of the utility model;

[0026] Figure 2 This is a structural diagram of the cross section of the glue injection component of the utility model;

[0027] Figure 3 This is a three-dimensional structural diagram of the filter screen of the utility model;

[0028] Figure 4 It is a structural schematic diagram of the filter screen cross section of the utility model.

[0029] The reference numerals in the figure are: 1, flange; 2, nozzle; 3, filter; 4, connecting piece; 5, positioning block; 6, positioning ring. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0032] In the description of this utility model, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and is not to be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0033] See also Figure 1-4 The present invention is an injection molding machine, which includes a device body and a glue injection assembly, wherein the glue injection assembly is fixedly mounted on the device body. The glue injection assembly includes a flange 1, a nozzle 2, and a filter 3.

[0034] See also Figure 1-4In one embodiment of the present invention, the flange 1 is used to fix the glue injection assembly to the corresponding position on the main body of the equipment. A glue injection channel is provided in the flange 1, which is used to communicate with the corresponding structure to allow the molten glue to flow. The flange 1 may include a main body and a mounting head. The main body may be annular and have a number of through holes evenly distributed along the circumference for fixed installation. The mounting head may be a columnar or cylindrical structure, and its end away from the flange 1 is used to connect with the nozzle 2. The portion where the main body is connected to the mounting head may have a conical transition, and a notch and a countersunk hole may be provided at the transition position for installing a thermocouple.

[0035] See also Figure 1-4 In one embodiment of the present invention, the nozzle 2 is fixedly connected to the flange 1, and a glue injection chamber connected to the glue injection channel is provided in the nozzle 2 for the circulation of glue. Specifically, the nozzle 2 can be a cylindrical structure, one end of the nozzle 2 can be conical and have a glue injection hole, the glue injection hole is connected to the glue injection chamber for injecting glue into the mold, and the glue injection hole and the glue injection chamber can have a conical transition. A long groove can be provided on the outer side of the nozzle 2, and a countersunk hole can be provided at one end of the long groove near the glue injection hole for setting a thermocouple. The countersunk hole can be tilted toward the glue injection hole to detect the glue temperature as much as possible.

[0036] See also Figure 1-4 In one embodiment of the present invention, the nozzle 2 and the flange 1 can be connected directly or through a connector 4. Connecting heads are respectively provided at both ends of the connector 4, and connecting holes are respectively provided on the nozzle 2 and the flange 1. The connecting head and the connecting hole can be snap-fitted, threaded, or installed in other ways. As an example, an external thread is provided on the connecting head, and an internal thread is provided in the connecting hole. And a rotating head is integrally provided at the middle position of the connecting head. Thus, a structure similar to a nut is formed for easy installation. A nut head is integrally provided at one end of the nozzle 2 close to the flange 1 for easy installation. By providing a connector 4 for connecting the nozzle 2, it is easier to clean the rubber on each end face when cleaning the clogged filter 3, which is convenient for users to use. A sealing step can be provided on the connector 4, and the two sides of the sealing step transition to the inclined surface of the outer wall of the connector 4. When in use, the inclined surface cooperates with the edge of the connecting hole of the nozzle 2 and the flange 1 to improve the sealing ability.

[0037] See also Figure 1-4In one embodiment of the present invention, the filter screen 3 is arranged in the flow channel of the molten glue, and the filter screen 3 is arranged in the glue injection chamber in the nozzle 2 and / or the glue injection channel inside the flange 1, that is, the filter screen 3 can be set as one or more. Preferably, two filter screens 3 are set and are respectively located at the two ends of the connecting piece 4. The two ends of the connecting piece 4 are cooperated with the nozzle 2 and the flange 1 to fix the two filter screens 3 respectively, so as to fully ensure the filtering effect.

[0038] See also Figure 1-4 In one embodiment of the present invention, the filter screen 3 can be a cylindrical structure, or other shapes such as a square cylinder. The filter screen 3 can include a bottom wall and side walls connected in an integral manner, and the bottom wall and side walls are respectively provided with a plurality of filter holes for the glue to pass through and filter. A plurality of positioning blocks 5 are fixedly arranged at intervals on the outer side of one end of the side wall close to the bottom wall for contacting and cooperating with the inner wall of the nozzle 2. A positioning ring 6 is fixedly arranged on the end of the side wall away from the bottom wall. A step portion is provided on the inner wall of the nozzle 2; the positioning ring 6 is used to cooperate with the step portion.

[0039] The working principle of the present invention is as follows: The stepped portion divides the injection chamber within the nozzle 2 into two sections of different diameters. During installation, one side of the positioning ring 6 is aligned with the stepped portion, while the other side is secured by the locking connector 4 (when connected directly to the flange 1, the flange 1 is provided with a corresponding structure for securing the same). The filter 3 is configured as a cylindrical structure consisting of side walls and a bottom wall. Compared to a flat filter structure, this effectively increases the filtration area of ​​the filter 3, increases the amount of glue passing through, and reduces the possibility of clogging. The positioning ring 6 and positioning blocks 5 provide positioning and stabilization for the filter 3, making it less susceptible to deformation and damage under the high pressure of the sol feed in the injection molding machine, thereby reducing or even eliminating the problem of deformation and damage to the filter structure. The positioning blocks 5 can be evenly distributed along the circumference of the side walls. An arc-shaped glue channel can be formed between adjacent positioning blocks 5, through which the glue filtered through the side walls is discharged. The junction between the bottom wall and the side walls can be provided with an inclined transition position to facilitate the passage of the glue. A conical transition cavity is provided inside one end of the side wall away from the bottom wall to facilitate the glue liquid to enter the space enclosed by the side wall for filtration.

[0040] The above describes an embodiment of the present invention in detail. However, the above description is only a preferred embodiment of the present invention and should not be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the claims of the present invention.

Claims

1. A glue injection component, characterized in that: include: A flange (1), wherein a glue injection channel is provided in the flange (1); A nozzle (2), the nozzle (2) being fixedly connected to the flange (1), a glue injection chamber communicating with a glue injection channel being provided in the nozzle (2), and a step portion being provided on an inner wall of the nozzle (2); A filter screen (3) is provided in the glue injection chamber, the filter screen (3) comprises a bottom wall and a side wall connected in one piece, and a plurality of filter holes are respectively provided on the bottom wall and the side wall, a plurality of positioning blocks (5) are fixedly provided at intervals on the outer side of one end of the side wall close to the bottom wall, and a positioning ring (6) is fixedly provided on the end of the side wall away from the bottom wall, and the positioning ring (6) is used to cooperate with the step portion.

2. A glue injection assembly according to claim 1, characterized in that: The positioning blocks (5) are evenly distributed along the circumference of the side wall.

3. A glue injection assembly according to claim 2, characterized in that: An arc-shaped glue channel is formed between two adjacent positioning blocks (5).

4. A glue injection assembly according to claim 1, characterized in that: The side walls are enclosed to form a cylindrical shape.

5. A glue injection assembly according to claim 4, characterized in that: A tapered transition cavity is formed in the interior of one end of the side wall away from the bottom wall.

6. The glue injection assembly according to claim 1, characterized in that: A connecting piece (4) is provided between the nozzle (2) and the flange (1), and connecting heads are provided at both ends of the connecting piece (4). Connecting holes are provided on the nozzle (2) and the flange (1).

7. A glue injection assembly according to claim 6, characterized in that: The connecting head is provided with an external thread, and the connecting hole is provided with an internal thread.

8. The glue injection assembly according to claim 7, characterized in that: The connecting head is integrally provided with a rotating head.

9. The glue injection assembly according to claim 8, characterized in that: One end of the nozzle (2) is conical and has a glue injection hole, and the other end is integrally provided with a nut head.

10. An injection molding machine, comprising an equipment body, characterized in that: It also includes a glue injection assembly as described in any one of claims 1 to 9, and the glue injection assembly is fixedly installed on the equipment body.

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