Spot injection molding nozzle

Abstract

The utility model relates to the technical field of injection molding machines, in particular to a spot injection molding nozzle which comprises a nozzle body connected with an extrusion barrel A. The nozzle body is provided with a micropore, one end of the micropore is formed in the peripheral wall of the nozzle body, and the other end of the micropore communicates with an inner cavity of the nozzle body. The nozzle body is sleeved with the sliding valve switch in a sliding structure mode, the sliding valve switch is in clearance fit with the nozzle body, the sliding valve switch is provided with a flow channel groove, the flow channel groove communicates with an extrusion device, and the sliding valve switch is connected with a driving mechanism so as to drive the sliding valve switch to slide in the axial direction of the nozzle body. And the molten material in the extrusion charging barrel B is extruded into the nozzle body and is added on the molten material extruded from the extrusion charging barrel A to form spot-shaped or stripe-shaped products, so that the product diversity is increased, the requirements of consumers are met, and the competitiveness of enterprises is improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of injection molding machines, in particular to a spot injection nozzle. BACKGROUND

[0002] The injection molding machine is also called an injection molding machine or an injection machine. It is the main molding equipment for making various plastic products by using a plastic molding mold. The injection molding machine can heat the plastic, apply high pressure to the molten plastic, and make it fill the mold cavity. The plasticizing device mainly comprises a feeding device, a barrel, a screw, a glue applying assembly and a nozzle part.

[0003] The utility model patent with the application number CN202121892590.5 of the company, namely a nozzle for double-color alternating injection molding, comprises a shell, and the left and right ends of the shell are provided with openings; an outer spray gun is fixedly arranged at the opening on the right side of the shell; a push disc is located on the left side of the first sealing ring and is connected with the shell in a sliding sealing manner; an inner spray gun is connected with the first sealing ring and the second sealing ring in a sliding sealing manner, and the left end of the inner spray gun is fixedly connected with the push disc; a center ejector pin is connected with the inner spray gun in a sliding manner; a driving device is fixedly and sealingly arranged at the opening on the left side of the shell, and the driving device is fixedly connected with the center ejector pin; a tray, a first sealing ring and a second sealing ring are arranged in the shell, so that they cooperate with the inner spray gun to form separate flow channels; the center ejector pin can extend into the inner part of the spray opening A and the spray opening B to extrude the molten material in the inner part, so that the boundary of the produced product is clear.

[0004] The nozzle can produce products with double colors and multiple colors along the axial direction, but some customers need to add spots on the outer surface of the products to improve the appearance grade of the products and increase the diversification and diversification of the products. Utility model content

[0005] To solve the above technical problems, the utility model provides a spot injection nozzle, which solves the technical problem of producing products with spots to improve the appearance grade of the products and increase the diversification and diversification of the products. To solve the above technical problems, the utility model adopts the technical scheme that

[0006] The spot injection nozzle comprises:

[0007] A nozzle body connected with an extrusion barrel A;

[0008] A micro-hole, one end of which is arranged on the outer wall of the nozzle body, and the other end of which is connected with the inner cavity of the nozzle body;

[0009] A slide valve switch for closing the micro-hole feed port, which is sleeved on the outside of the nozzle body in a sliding structure, and is provided with a flow channel groove;

[0010] A driving mechanism is connected with the spool switch to drive the spool switch to slide along the nozzle body in the axial direction.

[0011] An extrusion device is communicated with the flow channel groove.

[0012] Further, the feeding ends of the plurality of micro-holes are uniformly spaced along the circumference of the nozzle body.

[0013] The flow channel groove comprises an annular flow channel and a flow channel A, the annular flow channel is arranged on the inner side wall of the spool switch, and the annular flow channel is communicated with the outer side wall of the spool switch through the flow channel A.

[0014] Further, the extrusion device comprises a feeding cylinder communicated with the flow channel A, and the other end of the feeding cylinder is sleeved with an extrusion cylinder B in a sliding structure.

[0015] The driving mechanism is connected with the feeding cylinder.

[0016] Further, the feeding cylinder comprises a support rod fixedly connected with the spool switch, the support rod is internally provided with a flow channel B communicated with the flow channel A, and the other end of the support rod is fixedly provided with a sliding sleeve communicated with the extrusion cylinder B, and the sliding sleeve is sleeved with the extrusion cylinder B in a sliding structure.

[0017] Further, the driving mechanism is an oil cylinder.

[0018] The beneficial effects of the utility model are as follows: the micro-holes are arranged on the circumference of the nozzle body, the molten material in the extrusion cylinder B is extruded into the nozzle body, the molten material extruded in the extrusion cylinder A is added, the spot-shaped product is formed, the product diversity is increased, the consumer demand is met, and the competitiveness of enterprises is improved.

[0019] The opening and closing of the micro-holes are controlled by the spool switch, the structure is simple, and the stability is good. DRAWINGS:

[0020] Figure 1 It is a cross-sectional structure schematic view of the utility model.

[0021] Figure 2 It is a nozzle body structure schematic view of the utility model.

[0022] Figure 3 It is a spool switch cross-sectional structure schematic view of the utility model.

[0023] IN THE DRAWINGS:

[0024] 1, extrusion cylinder A, 2, nozzle body, 3, micro-hole, 4, spool switch, 5, flow channel groove, 51, annular flow channel, 52, flow channel A, 6, driving mechanism, 7, extrusion cylinder B, 8, support rod, 9, flow channel B, 10, sliding sleeve. DETAILED DESCRIPTION:

[0025] In order to make the purpose, technical scheme and advantages of the utility model clearer, the utility model will be further described in detail below with reference to the drawings and embodiments, so that the public can better master the implementation method of the utility model, and the specific implementation scheme of the utility model is as follows:

[0026] The spot injection nozzle comprises a nozzle body 2 connected with an extrusion barrel A1, the nozzle body 2 is provided with a micro hole 3, one end of the micro hole 3 is provided on the peripheral wall of the nozzle body 2, the other end is communicated with the inner cavity of the nozzle body 2, and a slide valve switch 4 for closing the feeding port of the micro hole 3 is further arranged, the slide valve switch 4 is sleeved on the outside of the nozzle body 2 in a sliding structure mode, the slide valve switch 4 is in clearance fit with the nozzle body 2, the slide valve switch 4 is provided with a flow channel groove 5, the flow channel groove 5 is communicated with an extrusion device, and the slide valve switch 4 is connected with a driving mechanism 6 for driving the slide valve switch 4 to slide along the nozzle body 2 in the axial direction, the molten material in the extrusion barrel B7 is extruded into the nozzle body 2 through the circumferential micro hole 3 of the nozzle body 2, and is added to the extruded molten material in the extrusion barrel A, so that the spot or stripe product is formed, the product diversity is increased, the needs of consumers are met, and the competitiveness of enterprises is improved.

[0027] It should be noted that the feeding ends of the plurality of micro holes 3 are uniformly and interval arranged along the circumference of the nozzle body 2, the flow channel groove 5 comprises an annular flow channel 51 and a flow channel A 52, the annular flow channel 51 is arranged on the inner side wall of the slide valve switch 4, and the annular flow channel 51 is communicated with the outer side wall of the slide valve switch 4 through the flow channel A 52.

[0028] Specifically, the extrusion device comprises a feeding barrel communicated with the flow channel A 52, the feeding barrel comprises a support rod 8 fixedly connected with the slide valve switch 4 in a fixed structure mode, the support rod 8 is internally provided with a flow channel B 9 communicated with the flow channel A 52, and the other end of the support rod 8 is fixedly provided with a sliding sleeve 10 communicated with the extrusion barrel B7, the sliding sleeve 10 is sleeved with the extrusion barrel B7 in a sliding structure mode, and the two are in clearance fit, so that material leakage is avoided. In this structure, the extrusion barrel B7 does not need to be moved, the rear structure movement is avoided, the structure is simplified, and only the molten material needs to be extruded and pushed into the flow channel B 9 through the internal screw rod, and then injected into the flow channel groove 5.

[0029] The driving mechanism 6 is an oil cylinder, the oil cylinder is arranged in connection with the injection molding machine frame, the other end is connected with the support rod 8, the support rod 8 is driven to move through the oil cylinder, the slide valve switch 4 is driven to move, and the opening and closing of the micro hole 3 are facilitated.

[0030] The working principle and working process of the utility model are as follows:

[0031] Firstly, the molten material in the extrusion cylinder A1 is extruded into the nozzle body 2 by the screw, if spot product is needed, the oil cylinder 6 is started to push the support rod 8, the support rod 8 drives the slide valve switch 4 to move until the annular flow channel is communicated with the micro hole 3, the screw in the extrusion cylinder B7 is started to extrude the decorative molten material into the flow channel B9, the flow channel A52, the annular flow channel 51 and the micro hole 3 in turn, and then into the nozzle body 2, and is attached to the periphery of the material extruded from the extrusion cylinder A1, and moves outward together to form a strip structure, if spot structure is needed, the oil cylinder 6 is started to retract after the decorative molten material enters the nozzle, the micro hole 3 is closed by the inner wall of the slide valve switch 4 to form a spot structure.

[0032] In the description of the utility model, it is understood that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "front", "back", "left lower", "right upper", "outer", "clockwise", "counterclockwise" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the protection scope of the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance. Although the utility model is described according to a limited number of embodiments, those skilled in the art should understand from the above description that other embodiments can be conceived within the scope of the utility model described herein.

Claims

1. A speckled injection nozzle, characterized in that, include: Nozzle body (2) connected to extrusion barrel A (1); Microhole (3), one end of microhole (3) is opened on the outer wall of nozzle body (2), and the other end is connected to the inner cavity of nozzle body (2); The slide valve switch (4) is used to close the feed port of the micro-orifice (3). The slide valve switch (4) is sleeved on the outside of the nozzle body (2) in a sliding structure. The slide valve switch (4) has a flow channel groove (5). Drive mechanism (6) is connected to slide valve switch (4) to drive slide valve switch (4) to slide along the axial direction of nozzle body (2); The extrusion device is connected to the flow channel (5).

2. The spot injection nozzle according to claim 1, characterized in that: The feed ends of several micro-holes (3) are evenly spaced along the circumference of the nozzle body (2); The flow channel (5) includes an annular flow channel (51) and flow channel A (52). The annular flow channel (51) is opened on the inner side wall of the slide valve switch (4), and the annular flow channel (51) is connected to the outer side wall of the slide valve switch (4) through the flow channel A (52).

3. The spot injection nozzle according to claim 2, characterized in that: The extrusion device includes a feed cylinder that communicates with the flow channel A (52), and an extrusion cylinder B (7) is sleeved at the other end of the feed cylinder by means of a sliding structure; The drive mechanism (6) is connected to the feed cylinder.

4. The spot injection nozzle according to claim 3, characterized in that: The feed cylinder includes a support rod (8) that is fixedly connected to the slide valve switch (4). The support rod (8) has a flow channel B (9) that communicates with the flow channel A (52). The other end of the support rod (8) is fixedly provided with a sliding sleeve (10) that communicates with the extrusion cylinder B (7). The sliding sleeve (10) and the extrusion cylinder B (7) are fitted together in a sliding manner.

5. The spot injection nozzle according to claim 3 or 4, characterized in that: The drive mechanism (6) is a hydraulic cylinder.

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