Anti-material-returning injection cylinder of injection molding machine

Abstract

The utility model relates to the technical field of injection molding machines, in particular to an anti-material-returning injection cylinder of an injection molding machine, which comprises a cylinder body, a conveying screw rod is rotatably arranged in the cylinder body, a feed port is arranged on the side wall of one end of the cylinder body, an injection port is arranged at the other end of the cylinder body, a guide cylinder is fixedly arranged in the cylinder body, and the guide cylinder is connected with the conveying screw rod. The guide cylinder is located at the feeding port and arranged on the conveying screw in a sleeving mode, a material guide plate is arranged at the end, close to the injection port, of the guide cylinder, and a spiral material guide face is arranged on the material guide plate. The utility model has the effect that the rubber material is not easy to return.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of injection molding machine especially is injection molding machine prevents the injection cylinder of material returning. BACKGROUND

[0002] In rubber processing, injection molding machine is mainly composed of injection system, mold clamping system, hydraulic transmission system (or called hydraulic system), electrical control system, heating and cooling system, lubricating system and safety monitoring system etc. When processing rubber, the rubber material is transported into the injection cylinder of injection molding machine, and then injected into the mold through the injection cylinder to form, but at present, when processing some soft rubber, the rubber is easy to flow out of the feeding port of the injection cylinder when feeding into the injection cylinder, causing rubber material returning, affecting production. CONTENT

[0003] In order to prevent the rubber from returning, the utility model provides an injection molding machine anti-return injection cylinder for the prior art.

[0004] The utility model provides an injection molding machine anti-return injection cylinder, adopts the following technical scheme:

[0005] An injection molding machine anti-return injection cylinder, comprising a cylinder body, a conveying screw is rotatably arranged in the cylinder body, a feeding port is arranged on the side wall of one end of the cylinder body, an injection port is arranged on the other end of the cylinder body, a guide cylinder is fixedly arranged in the cylinder body, the guide cylinder is located at the feeding port, the guide cylinder is sleeved on the conveying screw, a guide plate is arranged on the end of the guide cylinder close to the injection port, and a spiral guide surface is arranged on the guide plate.

[0006] Preferably, a feeding cavity and a conveying cavity are arranged in the cylinder body, the guide cylinder is located in the conveying cavity, and the peripheral surface of the conveying screw abuts against the inner wall of the conveying cavity.

[0007] Preferably, one end of the spiral guide surface extends to the side of the feeding port away from the injection port, and the other end of the spiral guide surface extends to the side of the feeding cavity close to the injection port.

[0008] Preferably, a transition inclined surface is arranged between the feeding cavity and the conveying cavity.

[0009] Preferably, the guide cylinder and the injection cylinder are inserted and matched, the end of the guide cylinder is provided with a flange, and a plurality of bolts are threadedly connected between the flange and the end of the cylinder body.

[0010] Preferably, the helical surface and the helical direction of the screw are opposite.

[0011] Preferably, the feeding slope is arranged between the feeding port and the inner wall of the feeding cavity.

[0012] In summary, the injection molding machine of the present application has at least one of the following beneficial technical effects:

[0013] When the conveying screw conveys some soft rubber material, the rubber material enters the feeding cavity from the feeding port, the rubber material between the conveying screw and the feeding cavity is driven by the conveying screw and moves along the spiral guide surface to the direction close to the conveying cavity, the rubber material is pressed between the spiral blades of the conveying screw when conveyed to the conveying cavity, and then enters the conveying cavity and is injected out of the injection port, so that the rubber material return problem is not prone to occur. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the present application.

[0015] Figure 2 It is an explosion schematic diagram of the present application.

[0016] Figure 3 It is a cross-sectional schematic diagram of the present application.

[0017] Figure 4 It is a cross-sectional schematic diagram of the present application.

[0018] Figure 5 It is a cross-sectional schematic diagram of the present application.

[0019] In the figure: 1, barrel; 11, feeding port; 111, feeding slope; 12, injection port; 13, feeding cavity; 14, conveying cavity; 15, transition slope; 2, conveying screw; 3, guide cylinder; 31, guide plate; 311, spiral guide surface; 32, flange; DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0021] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product of the application is usually placed, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0022] The utility model discloses an injection molding machine prevents the injection cylinder of material return, as shown in a kind of, including cylinder 1, conveying screw 2 is provided in cylinder 1, conveying screw 2 is coaxially arranged with cylinder 1, coaxially arranged with cylinder 1 in cylinder 1 there is the feeding cavity 13 and conveying cavity 14 that communicate, the diameter of feeding cavity 13 is same with the diameter of conveying screw 2, the peripheral surface of conveying screw 2 is abutted to the inner wall of conveying cavity 14, the diameter of conveying cavity 14 is greater than the diameter of screw, and there is gap between the peripheral surface of screw and the inner wall of feeding cavity 13. Figures 1-5

[0023] The end side wall of cylinder 1 is provided with feeding port 11, feeding port 11 is communicated with feeding cavity 13, the other end of cylinder 1 is provided with injection port 12, injection port 12 is communicated with conveying cavity 14, after rubber material enters into feeding cavity 13 through feeding port 11, conveying screw 2 rotates and conveying rubber material to conveying cavity 14, then rubber material is shot from injection port 12 through conveying cavity 14, and feeding cavity 13 can conveniently make rubber material enter into cylinder 1 smoothly, conveying cavity 14 can make conveying screw 2 stably convey rubber material to injection port 12, simultaneously, feeding cavity 13 and conveying cavity 14 are provided with transition inclined surface 15, transition inclined surface 15 can make rubber material not easy to accumulate between feeding cavity 13 and conveying cavity 14, cause the rubber material of this part to stay too long. Simultaneously, feeding port 11 is provided with feeding inclined surface 111 between the inner wall of feeding cavity 13 and the side close to injection port 12, feeding inclined surface 111 can conveniently make rubber material better spread into feeding cavity 13 after passing through feeding port 11.

[0024] In addition, the end of cylinder 1 away from injection port 12 is provided with guiding cylinder 3, guiding cylinder 3 is coaxially arranged with cylinder 1, guiding cylinder 3 is inserted and matched with injection cylinder, the end of guiding cylinder 3 is integrally formed with flange 32, flange 32 is attached to the end face of cylinder 1, and a plurality of bolts are threadedly connected between flange 32 and the end face of cylinder 1, guiding cylinder 3 is located in conveying cavity 14, and guiding cylinder 3 is sleeved on conveying screw 2, and conveying screw 2 is rotatably connected to guiding cylinder 3.

[0025] ​In addition, the guide cylinder 3 is integrally formed with a guide plate 31 close to the injection port 12, the outer side of the guide plate 31 is attached to the inner wall of the feeding cavity 13, the peripheral surface of the conveying screw 2 abuts on the inner wall of the guide plate 31, the guide plate 31 is provided with a spiral guide surface 311, one end of the spiral guide surface 311 extends to the side of the feeding port 11 away from the injection port 12, the other end of the spiral guide surface 311 extends to the side of the feeding cavity 13 close to the injection port 12, and the spiral guide surface 311 is opposite to the spiral direction of the conveying screw 2, when the spiral direction of the conveying screw 2 is right-handed, the spiral direction of the spiral guide surface 311 is left-handed, and the spiral guide surface 311 can guide the rubber compound, so that the rubber compound is not easy to flow out of the feeding port 11.

[0026] The implementation principle of the injection molding machine anti-return material injection cylinder is that when the conveying screw 2 conveys some soft rubber compound, the rubber compound enters the feeding cavity 13 from the feeding port 11, the rubber compound in the gap between the conveying screw 2 and the feeding cavity 13 is driven by the conveying screw 2 and moves in the direction close to the conveying cavity 14 along the spiral guide surface 311, the spiral guide surface 311 guides the rubber compound, and the rubber compound is pressed between the spiral blades of the conveying screw 2 when conveyed to the conveying cavity 14, then enters the conveying cavity 14 and is conveyed to the injection port 12 to be injected out, and the rubber compound return problem is not easy to occur.

[0027] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form, although the utility model discloses the above preferred embodiment, however, it is not used to limit the utility model, any skilled person in the art, without departing from the technical scheme range of the utility model, when utilizing the disclosed technical content makes some changes or modifications as equivalent embodiments of equivalent changes, but as long as it does not depart from the technical scheme content of the utility model, according to the utility model technology refers to any simple modification, equivalent change and modification of the above embodiment, which belongs to the range of the utility model technical scheme.

Claims

1. An injection molding machine anti-backflow injection barrel, characterized by: The utility model provides a kind of injection molding machine, including barrel (1), rotatingly arranged conveying screw (2) in the barrel (1), the sidewall of one end of the barrel (1) is provided with feed inlet (11), the other end of the barrel (1) is provided with injection port (12), guiding cylinder (3) is fixedly arranged in the barrel (1), the guiding cylinder (3) is located at the feed inlet (11), the guiding cylinder (3) is sleeved on the conveying screw (2), the end portion of the guiding cylinder (3) close to the injection port (12) is provided with guide plate (31), and the guide plate (31) is provided with helical guide surface (311).

2. A backflow prevention injector barrel for an injection molding machine according to claim 1, characterized in that: The barrel (1) is provided with feed cavity (13) and conveying cavity (14), the guiding cylinder (3) is located in the conveying cavity (14), and the peripheral surface of the conveying screw (2) abuts against the inner wall of the conveying cavity (14).

3. A backflow prevention injector barrel for an injection molding machine as defined in claim 2, wherein: One end of the helical guide surface (311) extends to the side of the feed inlet (11) away from the injection port (12), and the other end of the helical guide surface (311) extends to the side of the feed cavity (13) close to the injection port (12).

4. The anti-backflow injection cylinder of claim 2, wherein: A transition slope (15) is provided between the feed cavity (13) and the conveying cavity (14).

5. The anti-backflow injection cylinder of claim 1, wherein: The guiding cylinder (3) is inserted and matched with the injection cylinder, the end portion of the guiding cylinder (3) is provided with flange (32), and a plurality of bolts are threadedly connected between the flange (32) and the end portion of the barrel (1).

6. A backflow prevention injector barrel for an injection molding machine according to claim 1, wherein: The helical guide surface (311) is opposite in helical direction to the conveying screw (2).

7. A backflow prevention injector barrel for an injection molding machine as defined in claim 2, wherein: A feed slope (111) is provided between the side of the feed inlet (11) close to the injection port (12) and the inner wall of the feed cavity (13).

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