An injection molding machine nozzle with a local abnormally high temperature warning function

Abstract

The present invention discloses an injection molding machine nozzle with a local abnormally high temperature warning function, belonging to the field of injection molding equipment. During the injection molding process, the temperature detection sleeve is always in a dynamic process of reciprocating rotation around the injection molding machine nozzle. During the rotation process, comprehensive temperature monitoring of the surface of the injection molding nozzle body is realized. Compared with the prior art that uses a temperature sensor for temperature monitoring, the temperature monitoring of the surface of the injection molding nozzle body is more comprehensive, and it is not easy to have a situation where it is difficult to detect local abnormally high temperature in a timely manner; during the temperature monitoring process, when there is local abnormally high temperature, when the double-variable contact column moves to near the high-temperature area, local heat melting occurs inside the double-variable contact column, causing the hydration gas particles to mix with water. At this time, an obvious expansion phenomenon occurs at the upper half part of the double-variable contact column exposed outside, and an obvious color change phenomenon occurs in the double-variable contact column at the lower position, thus playing a timely warning role for local high temperature and effectively reducing the impact on the discharge quality and the service life of the injection molding machine nozzle.

Description

Technical Field

[0001] The present invention relates to the field of injection molding equipment, and more specifically, to an injection molding machine nozzle with a local abnormal high temperature warning function. Background Art

[0002] An injection molding machine is also known as an injection molding press or an injection machine. It is the main molding equipment for making various shaped plastic products from thermoplastic or thermosetting plastics using plastic molding dies. It is divided into vertical, horizontal, and all-electric types. The injection molding machine can heat the plastic, apply high pressure to the molten plastic, and inject it to fill the mold cavity. The injection molding machine is the main production equipment for plastic and rubber products. Given the advantages of low cost, small volume, long service life, high degree of automation, and good reliability of hydraulics, the vast majority of injection molding machines use hydraulic systems.

[0003] During injection molding, there are certain requirements for the discharge temperature. However, when the injection molding machine is used for a long time, the nozzle is in contact with high-temperature molten material for a long time, and the temperature is likely to rise. When there is leakage or other accidental situations, it may even cause local abnormal high temperature, which not only affects the discharge quality but also easily affects the service life of the injection molding machine nozzle. Although temperature sensors are generally used for temperature detection in the prior art, it is convenient to detect the temperature at a single point, but it is difficult to accurately monitor the temperature of the entire outer surface of the injection molding machine nozzle comprehensively, resulting in a certain one-sidedness in the temperature monitoring results. Summary of the Invention

[0004] 1. Technical Problems to be Solved

[0005] Aiming at the problems existing in the prior art, the purpose of the present invention is to provide an injection molding machine nozzle with a local abnormal high temperature warning function. During the injection molding process, the temperature detection sleeve is always in a dynamic process of reciprocally rotating around the injection molding machine nozzle. During the rotation process, comprehensive temperature monitoring of the surface of the injection molding nozzle body is realized. Compared with the temperature monitoring using a temperature sensor in the prior art, the temperature monitoring of the surface of the injection molding nozzle body is more comprehensive, and it is not easy to miss the detection of local abnormal high temperature in a timely manner; during the temperature monitoring process, when there is local abnormal high temperature, when the double-variable contact column moves to the vicinity of the high-temperature area, local heat fusion occurs inside the double-variable contact column, causing the hydrated gas particles to mix with water. At this time, a significant expansion phenomenon occurs at the upper half of the double-variable contact column exposed outside, and a significant color change phenomenon occurs at the double-variable contact column in the lower position, thereby playing a timely warning role for local high temperature and effectively reducing the impact on the discharge quality and the service life of the injection molding machine nozzle.

[0006] 2. Technical Solutions

[0007] To solve the above problems, the present invention adopts the following technical solutions.

[0008] An injection molding machine nozzle with a local abnormal high temperature warning function, including an injection molding nozzle body, a temperature detection sleeve is rotatably connected outside the injection molding nozzle body. The temperature detection sleeve includes two follower rings rotatably arranged outside the injection molding nozzle body and a plurality of heat-variable spokes evenly distributed between the two follower rings. Both the left and right ends of the heat-variable spokes are fixedly connected with positioning blocks, the inner wall of the positioning blocks is fixedly connected with the outer ends of the corresponding follower rings, and a rack is fixedly connected to the outer end of the follower ring far from the mouth of the injection molding nozzle body. The rack is located between two adjacent positioning blocks, and a driving gear is meshed with the outside of the rack. A plurality of double-variable contact posts are evenly distributed on the heat-variable spokes.

[0009] Further, the driving gear is driven by being connected to a motor or an electric rotating shaft. When the driving gear rotates to drive the rack to move, after the other end of the rack contacts the driving gear, the driving gear is controlled to rotate in the reverse direction.

[0010] Further, the angle of each rotation of the driving gear is 5-10°, and the interval between two adjacent rotations is 5-10 seconds. The central angle of the rack is consistent with the central angle between two adjacent heat-variable spokes.

[0011] Further, a plurality of temperature sensing holes corresponding to the plurality of double-variable contact posts are drilled on the heat-variable spokes. The lower half of the double-variable contact post is embedded in the temperature sensing hole, the upper half of the double-variable contact post is fixedly connected to the mouth of the temperature sensing hole, and the upper half of the double-variable contact post completely covers the temperature sensing hole.

[0012] Further, the upper half of the double-variable contact post includes an outer bulging piece, the lower half of the double-variable contact post includes a heat conducting ring fixedly attached to the inner wall of the temperature sensing hole and an inner heat gathering column fixedly embedded inside the heat conducting ring. A pre-leakage groove is drilled above the inner heat gathering column, a pre-leakage layer is fixedly connected to the mouth of the pre-leakage groove, and hydrated gas particles are filled in the pre-leakage groove. Pure water is filled in the space surrounded by the inner heat gathering column, the heat conducting ring and the outer bulging piece.

[0013] Further, the lower ends of the inner heat gathering column and the heat conducting ring are both attached to the surface of the injection molding nozzle body, and the heat conductivity of the heat-variable spokes, the heat conducting ring and the inner heat gathering column gradually increases.

[0014] Further, the pre-leakage layer includes a leakage layer fixedly connected to the mouth of the pre-leakage groove and heat melting layers evenly coated on the upper and lower ends of the leakage layer. The heat melting layers seal the inner and outer sides of the pre-leakage groove.

[0015] Further, the leakage layer is a porous heat conducting structure, and the inner diameter of the pores of the leakage layer is larger than the particle size of the hydrated gas particles.

[0016] Further, the hydrated gas particles are uniformly mixed by water-soluble particles and effervescent tablet particles in an equal volume ratio, and the particle sizes of the water-soluble particles and the effervescent tablet particles are kept consistent.

[0017] Further, the color of the water-soluble particles is colored, and the outer drum piece is an elastic transparent structure.

[0018] 3. Beneficial effects

[0019] Compared with the prior art, the advantages of the present invention are as follows:

[0020] (1) During the injection molding process of this solution, the temperature inspection sleeve is always in a dynamic process of reciprocating rotation around the injection molding machine nozzle. During the rotation process, comprehensive temperature monitoring of the surface of the injection molding nozzle body is realized. Compared with using a temperature sensor for temperature monitoring in the prior art, the temperature monitoring of the surface of the injection molding nozzle body is more comprehensive, and it is not easy to have a situation where it is difficult to detect local abnormal high temperature in a timely manner; during the temperature monitoring process, when there is local abnormal high temperature, when the double-variable contact column moves to near the high-temperature area, local heat melting occurs inside the double-variable contact column, causing the water-containing gas particles to mix with water. At this time, an obvious expansion phenomenon occurs at the upper half part of the double-variable contact column exposed outside, and an obvious color change phenomenon occurs at the double-variable contact column in the lower position, thus playing a timely warning role for local high temperature and effectively reducing the impact on the discharge quality and the service life of the injection molding machine nozzle. Description of the drawings

[0021] Figure 1 is a three-dimensional structural schematic diagram of the present invention;

[0022] Figure 2 is a structural schematic diagram of the cross-section when the driving gear of the present invention rotates clockwise;

[0023] Figure 3 is a structural schematic diagram of the cross-section when the driving gear of the present invention rotates counterclockwise;

[0024] Figure 4 is a three-dimensional structural schematic diagram of the heat-variable spoke of the present invention when viewed from below;

[0025] Figure 5 is a three-dimensional structural schematic diagram of the heat-variable spoke of the present invention when viewed from above;

[0026] Figure 6 is a structural schematic diagram of the cross-section of the heat-variable spoke of the present invention;

[0027] Figure 7 is a structural schematic diagram of the cross-section of the horizontal variable spoke of the present invention when local overheating occurs;

[0028] Figure 8 is a structural schematic diagram of the heat-variable spoke of the present invention when a bulging phenomenon occurs.

[0029] Explanation of the reference numerals in the drawings:

[0030] 1 Injection nozzle body, 2 Follow-up ring, 21 Positioning block, 3 Heat-variable spoke, 4 Driving gear, 5 Rack, 6 Double-variable contact post, 61 Outer drum piece, 62 Inner heat-converging column, 63 Heat-conducting ring, 64 Pre-leakage layer. Detailed implementation mode

[0031] The following will combine the accompanying drawings in the embodiments of the present invention; the technical solutions in the embodiments of the present invention will be clearly and completely described; obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0032] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "top / bottom end", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is 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 therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0033] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "provided with", "sheathed / connected", "connection", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0034] Embodiment 1:

[0035] Please refer to Figure 1 , an injection molding machine nozzle with a local abnormal high temperature warning function, including an injection nozzle body 1, a temperature detection sleeve is rotatably connected outside the injection nozzle body 1. The temperature detection sleeve includes two follow-up rings 2 rotatably arranged outside the injection nozzle body 1 and a plurality of heat-variable spokes 3 evenly distributed between the two follow-up rings 2. Positioning blocks 21 are fixedly connected to both the left and right ends of the heat-variable spoke 3, and the inner wall of the positioning block 21 is fixedly connected to the outer end of the corresponding follow-up ring 2. A rack 5 is fixedly connected to the outer end of the follow-up ring 2 far from the mouth of the injection nozzle body 1. The rack 5 is located between two adjacent positioning blocks 21, and a driving gear 4 is externally meshed with the rack 5.

[0036] The driving gear 4 is driven by being connected to a motor or an electric rotating shaft. Those skilled in the art can select a suitable motor or electric rotating shaft to achieve the rotation of the driving gear 4 according to needs. This is the prior art. Therefore, the motor or electric rotating shaft is not drawn in the appendix. Figure 1 in the figure.

[0037] Please refer to Figures 2-3 . When the driving gear 4 rotates to drive the rack 5 to move, after the other end of the rack 5 contacts the driving gear 4, control the driving gear 4 to rotate in the reverse direction, so that the rotation amplitude of the temperature detection sleeve is always small, so that a thermal deformation spoke 3 can correspondingly reflect the temperature condition of a fixed range. When an obvious phenomenon occurs at the thermal deformation spoke 3, the approximate overheating area can be quickly located. Compared with the sensor detection in the prior art, it can not only perform a more comprehensive temperature detection on the surface of the injection nozzle body 1, but also better determine the overheating area, so that the effect of temperature monitoring is better. The angle of each rotation of the driving gear 4 is 5-10°. If the rotation angle is too large, it is easy to cause a gap between the two positions of the thermal deformation spoke 3 during two rotations, affecting the comprehensiveness of the temperature monitoring of the surface of the injection nozzle body 1. And the interval between adjacent two rotations is 5-10 seconds. With a certain pause rotation time, the bottom of the double-variable contact column 6 has a certain time to sense the temperature corresponding to the injection nozzle body 1. The central angle of the rack 5 is the same as the central angle between adjacent two thermal deformation spokes 3, so that a thermal deformation spoke 3 can correspondingly monitor the temperature condition within a fixed area, which is convenient for positioning the abnormal part when an abnormality occurs.

[0038] Please refer to Figures 4-5 . A plurality of evenly distributed double-variable contact columns 6 are provided on the thermal deformation spoke 3. As Figure 6 shown, a plurality of temperature sensing holes corresponding to the plurality of double-variable contact columns 6 are drilled on the thermal deformation spoke 3. The lower half of the double-variable contact column 6 is embedded in the temperature sensing hole, the upper half of the double-variable contact column 6 is fixedly connected to the orifice of the temperature sensing hole, and the upper half of the double-variable contact column 6 completely covers the temperature sensing hole. The upper half of the double-variable contact column 6 includes an outer bulge piece 61. The lower half of the double-variable contact column 6 includes a heat conducting ring 63 fixedly attached to the inner wall of the temperature sensing hole and an inner heat gathering column 62 fixedly embedded inside the heat conducting ring 63. The lower ends of the inner heat gathering column 62 and the heat conducting ring 63 are both attached to the surface of the injection nozzle body 1, and the heat conductivity of the thermal deformation spoke 3, the heat conducting ring 63 and the inner heat gathering column 62 gradually increases. During the rotation of the thermal deformation spoke 3 with the follower ring 2, it is attached to the surface of the injection nozzle body 1, and thus can adsorb the heat on the surface of the injection nozzle body 1. At the same time, the inner heat gathering column 62 and the heat conducting ring 63 themselves can also adsorb heat. Due to the different heat conductivities, the heat on the thermal deformation spoke 3 and the heat conducting ring 63 gradually transfers towards the inner heat gathering column 62. When the temperature rises abnormally, the inner heat gathering column 62 absorbs more heat, causing the temperature to rise accordingly, and then causing changes in the color and volume at the double-variable contact column 6.

[0039] The pre-leakage groove is filled with hydrated gas particles, and the space enclosed by the cohesive heat column 62, the heat conduction ring 63, and the outer drum piece 61 is filled with pure water. The hydrated gas particles are formed by uniformly mixing water-soluble particles and effervescent tablet particles in an equal volume ratio, and the particle sizes of the water-soluble particles and the effervescent tablet particles are the same. The water-soluble particles are colored, and the outer drum piece 61 is an elastic transparent structure.

[0040] A pre-leakage groove is drilled above the cohesive heat column 62. A pre-leakage layer 64 is fixedly connected to the mouth of the pre-leakage groove. The pre-leakage layer 64 includes a leakage layer fixedly connected to the mouth of the pre-leakage groove and heat-melt layers uniformly coated on the upper and lower ends of the leakage net. The heat-melt layers seal the inner and outer sides of the pre-leakage groove. The leakage layer is a porous heat-conducting structure, and the inner diameter of the pores of the leakage layer is larger than the particle size of the hydrated gas particles. When the surface temperature of the injection nozzle body 1 is too high, the heat-melt layer inside the double-variable contact column 6 corresponding thereto is heated and melted. At this time, the pure water and the hydrated gas particles are mixed with each other. On the one hand, the water-soluble particles are dissolved in water when contacting water, and on the other hand, the effervescent tablet particles generate a large amount of gas when encountering water, causing the upper half of the double-variable contact column 6 to expand significantly, thereby realizing the overheat warning situation, enabling the staff to take corresponding measures in time, and greatly reducing the impact of overheating on the quality of the injection nozzle body 1 and the discharging quality.

[0041] Through the arrangement of a plurality of heat-variable spokes 3 and the double-variable contact columns 6 on the heat-variable spokes 3, during the injection molding process, the temperature inspection sleeve is always in a dynamic process of reciprocating rotation around the injection molding machine nozzle. During the rotation process, comprehensive temperature monitoring of the surface of the injection nozzle body 1 is realized. Compared with the prior art using a temperature sensor for temperature monitoring, the temperature monitoring of the surface of the injection nozzle body 1 is more comprehensive, and it is not easy to have a situation where it is difficult to detect local abnormal high temperature in time; during the temperature monitoring process, when there is local abnormal high temperature, when the double-variable contact column 6 moves to the vicinity of the high temperature, the local heat melting inside the double-variable contact column 6 mixes the hydrated gas particles with water. At this time, an obvious expansion phenomenon occurs at the upper half part of the double-variable contact column 6 exposed, and an obvious color change phenomenon occurs in the double-variable contact column 6 located at a lower position, thereby playing a timely warning role for local high temperature and effectively reducing the impact on the discharging quality and the service life of the injection molding machine nozzle.

[0042] The above; only the preferred specific embodiments of the present invention; but the protection scope of the present invention is not limited thereto; any person skilled in the art within the technical scope disclosed by the present invention; according to the technical solution of the present invention and its improved concept, making equivalent replacements or changes; should be covered by the protection scope of the present invention.

Claims

1. An injection molding machine nozzle with a local abnormal high temperature warning function, comprising an injection molding nozzle body (1), characterized in that: A temperature detection sleeve is rotatably connected to the outside of the injection nozzle body (1). The temperature detection sleeve includes two follower rings (2) rotatably arranged outside the injection nozzle body (1) and a plurality of heat-variable spokes (3) evenly distributed between the two follower rings (2). Positioning blocks (21) are fixedly connected to both the left and right ends of the heat-variable spoke (3). The inner wall of the positioning block (21) is fixedly connected to the outer end of the corresponding follower ring (2). A rack (5) is fixedly connected to the outer end of the follower ring (2) far from the mouth of the injection nozzle body (1). The rack (5) is located between two adjacent positioning blocks (21). A driving gear (4) is externally meshed with the rack (5). A plurality of double-variable contact posts (6) are evenly distributed on the heat-variable spoke (3). A plurality of temperature sensing holes corresponding to the plurality of double-variable contact posts (6) are drilled in the heat-variable spoke (3). The lower half of the double-variable contact post (6) is embedded in the temperature sensing hole. The upper half of the double-variable contact post (6) is fixedly connected to the mouth of the temperature sensing hole, and the upper half of the double-variable contact post (6) completely covers the temperature sensing hole. The upper half of the double-variable contact post (6) includes an outer bulging piece (61). The lower half of the double-variable contact post (6) includes a heat-conducting ring (63) fixedly attached to the inner wall of the temperature sensing hole and an inner heat-accumulating column (62) fixedly embedded inside the heat-conducting ring (63). A pre-leakage groove is drilled above the inner heat-accumulating column (62). A pre-leakage layer (64) is fixedly connected to the mouth of the pre-leakage groove. Hydrated gas particles are filled in the pre-leakage groove. Pure water is filled in the space surrounded by the inner heat-accumulating column (62), the heat-conducting ring (63), and the outer bulging piece (61). The lower ends of the inner heat-accumulating column (62) and the heat-conducting ring (63) are both attached to the surface of the injection nozzle body (1), and the heat conductivity of the heat-variable spoke (3), the heat-conducting ring (63), and the inner heat-accumulating column (62) gradually increases. The pre-leakage layer (64) includes a leakage layer fixedly connected to the mouth of the pre-leakage groove and heat-melting layers evenly coated on the upper and lower ends of the leakage layer. The heat-melting layers seal the inner and outer sides of the pre-leakage groove. The leakage layer is a porous heat-conducting structure, and the inner diameter of the pores of the leakage layer is larger than the particle size of the hydrated gas particles. The hydrated gas particles are uniformly mixed by water-soluble particles and effervescent tablet particles in an equal volume ratio, and the particle sizes of the water-soluble particles and the effervescent tablet particles are the same. The color of the water-soluble particles is colored. The outer bulging piece (61) is an elastic transparent structure.

2. The injection molding machine nozzle with a local abnormal high temperature warning function according to claim 1, wherein: The driving gear (4) is driven by being connected to a motor or an electric rotating shaft. When the driving gear (4) rotates to drive the rack (5) to move, after the other end of the rack (5) contacts the driving gear (4), the driving gear (4) is controlled to rotate in the reverse direction.

3. The injection molding machine nozzle with a local abnormal high temperature warning function according to claim 2, characterized in that: The angle of each rotation of the driving gear (4) is 5-10°, and the interval between two adjacent rotations is 5-10 seconds. The central angle of the rack (5) is the same as the central angle between two adjacent heat-variable spokes (3).

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