Injection molding machine convenient to adjust and capable of keeping aligned glue injection

Abstract

The invention relates to the field of injection molding machines, and discloses an injection molding machine convenient to adjust and capable of keeping aligned glue injection, the injection molding machine comprises a base, a fixed mold plate and a movable mold plate which are arranged on the base, a driving part used for pushing the movable mold plate to move, and an extrusion module which is provided with a glue injection barrel and can move towards the fixed mold plate, the glue injection barrel comprises a barrel body, a nozzle and a movable mechanism, two ends of the movable mechanism are respectively connected with the cylinder body and the nozzle, so that the nozzle can move in a plane parallel to the fixed template and in a limited range limited by the movable mechanism, and the nozzle is communicated with the glue injection cylinder through the movable mechanism. The movable mechanism is arranged, so that the nozzle is automatically aligned with the glue inlet when the mold is mounted. Meanwhile, the nozzle and the barrel body can relatively move within a limited range, so that in the glue injection process, parts of an injection molding machine and a mold slightly shift due to vibration, the nozzle and the glue inlet can be automatically adjusted, and the problems that glue is easy to leak and even the nozzle and the barrel are deformed due to relative dislocation movement stress are avoided.

Description

Technical Field

[0001] The present invention relates to the field of injection molding machines, and more specifically, to an injection molding machine that is convenient for adjusting and maintaining aligned injection. Background Art

[0002] The basic structure of the existing injection molding machine includes an extrusion module, a fixed mold plate, a movable mold plate and a driving assembly for driving the movable mold plate to open and close with the fixed mold plate, wherein the fixed mold plate and the movable mold plate are used to install the fixed mold and the movable mold of the injection mold. When installing the mold, since the nozzle of the extrusion module of the existing injection molding machine is in a fixed direction, it is necessary to constantly adjust the position of the mold when installing the mold so that the glue inlet on it is aligned with the nozzle. This makes installation and debugging more troublesome, time-consuming and labor-intensive. In addition, after installation and debugging, during use, the nozzle is against the glue inlet, but the components and molds of the injection molding machine may be slightly displaced due to vibration, resulting in a tendency for relative misalignment and movement between the nozzle and the glue inlet and being subjected to force. Over time, glue leakage and even deformation of the nozzle and barrel are likely to occur. Summary of the invention

[0003] In view of the above-mentioned deficiencies in the prior art, the present invention provides an injection molding machine which is easy to adjust the alignment of glue injection and can automatically maintain the alignment of glue injection when in use.

[0004] The above technical objectives of the present invention are achieved through the following technical solutions:

[0005] An injection molding machine that is convenient for adjusting and maintaining aligned glue injection comprises a base, a fixed mold plate and a movable mold plate arranged on the base, a driving member for pushing the movable mold plate to move, and an extrusion module with a glue injection cylinder that can move toward the fixed mold plate. The glue injection cylinder comprises a cylinder body, a nozzle and a movable mechanism, the two ends of the movable mechanism are respectively connected to the cylinder body and the nozzle, so that the nozzle can move in a plane parallel to the fixed mold plate and within a limited range defined by the movable mechanism, and the nozzle is connected to the glue injection cylinder through the movable mechanism.

[0006] Furthermore, the movable mechanism includes a funnel-shaped first glue outlet head, a pressure cover and a drag reduction component. A circle of flanges are arranged around the large opening end of the first glue outlet head. The pressure cover is threadedly connected to the glue outlet end of the barrel and presses the drag reduction component so that the drag reduction component is against the flange of the first glue outlet head, so that the top surface of the large opening end of the first glue outlet head is close to the plane on the glue outlet end of the barrel that is parallel to the fixed template. The pressure cover is provided with a limit opening for limiting the moving range of the first glue outlet head, and the nozzle is fixedly connected to the small opening end of the first glue outlet head.

[0007] Furthermore, the gland is provided with a plurality of concave cavities evenly arranged around the plurality of limiting openings, the drag reducing member includes balls having the same number as the concave cavities, and the plurality of balls are placed in the concave cavities in a one-to-one correspondence.

[0008] Furthermore, the movable mechanism includes a connecting block provided with a through flow channel and a second funnel-shaped glue outlet head, the connecting block is spherically connected to the glue outlet end of the barrel and can rotate within a limited conical angle relative to the barrel, the second glue outlet head is spherically connected to the connecting block and can rotate within a limited conical angle relative to the connecting block, and the nozzle is fixedly connected to the small opening end of the first glue outlet head.

[0009] Furthermore, the movable mechanism also includes a limiting component, one end of which is movably connected to the glue outlet end of the barrel and can move along a plane on the glue outlet end of the barrel that is parallel to the fixed template, and the other end of the limiting component is arranged at the small outlet end of the second glue outlet head, so that the axis of the second glue outlet head remains parallel to the axis of the barrel.

[0010] Furthermore, the limit assembly includes a fixed cover and a limit cover, the fixed cover is fixedly connected to the glue outlet end of the cylinder body and covers the flange of one end of the limit cover, so that the limit cover can move along a plane on the glue outlet end of the cylinder body parallel to the fixed template, and the other end of the limit cover is sleeved on the outer surface of the small outlet end of the second glue outlet head.

[0011] Furthermore, it also includes a first mounting seat, a second mounting seat and a first threaded adjustment member, the base includes four guide columns arranged in parallel, the guide columns include a threaded section and a smooth section, the first mounting seat is slidably connected to the smooth end of the guide column, the driving member is fixedly connected to the base and the output end is connected to the first mounting seat, the movable template is fixedly connected to the first mounting seat, the first threaded adjustment member is threadedly connected to the threaded section of the guide column, the second mounting seat is sleeved on the threaded section of the guide column and placed on the first threaded adjustment member, the fixed template is fixedly connected to one side of the second mounting seat and opposite to the movable template, and the extrusion module can be moved perpendicular to the second mounting seat and connected to the other side of the second mounting seat.

[0012] Furthermore, the extrusion module includes an extrusion component, a threaded rod, and a second threaded adjustment component. One end of the threaded rod is fixedly connected to the second mounting seat, the second threaded adjustment component is threadedly connected to the threaded rod, and the extrusion component is sleeved on the threaded rod and placed on the second threaded adjustment component.

[0013] In summary, the present invention has the beneficial effects: when the present invention is in use, the fixed mold and the movable mold of the mold are respectively installed on the fixed mold plate and the movable mold plate, and the glue inlet on the fixed mold is initially aligned with the nozzle. After installation, the extrusion module is adjusted to move toward the fixed mold plate so that the nozzle abuts the glue inlet. When it is not fully aligned, the nozzle will be pushed by one side of the glue inlet during this process. Since a movable mechanism is provided between the nozzle and the barrel, the nozzle will move to the other side and finally align with the glue inlet; through the movable mechanism, the nozzle and the barrel can be relatively moved within a limited range. Therefore, during the glue injection process, the components and molds of the injection molding machine are slightly displaced due to vibration, and the nozzle and the glue inlet are automatically adjusted to avoid the problem of easy glue leakage due to relative misalignment and movement force, or even deformation of the nozzle and the barrel. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0015] Figure 2 It is a cross-sectional and partially enlarged structural schematic diagram of an extrusion module according to an embodiment of the present invention;

[0016] Figure 3 It is a partial cross-sectional structural schematic diagram of a glue injection cylinder according to another embodiment of the present invention.

[0017] Figure numerals: 1. base; 11. guide column; 2. fixed mold plate; 21. base; 22. barrel; 23. heating element; 24. spiral blade; 25. driving element; 26. hopper; 3. movable mold plate; 4. driving element; 5. extrusion module; 51. extrusion assembly; 511. barrel; 512. nozzle; 52. threaded rod; 53. second threaded adjustment element; 6. first mounting seat; 61. threaded hole; 7. second mounting seat; 81. first glue outlet head; 82. pressure cover; 83. drag reducing element; 84. connecting block; 85. second glue outlet head; 86. fixed cover; 87. limit cover. DETAILED DESCRIPTION

[0018] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0019] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it can be directly on the other component or indirectly on the other component. When a component is referred to as being "connected to" another component, it can be directly or indirectly connected to the other component.

[0020] It should be understood that the orientation or position relationship indicated by terms such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the orientation or position relationship shown in the drawings, and 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 operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0021] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0022] Reference Figure 1 The injection molding machine comprises a base 1, a fixed die plate 2 and a movable die plate 3 arranged on the base 1, a driving member 4 for driving the movable die plate 3 to move, and an extrusion module 5. The machine also comprises a first mounting seat 6, a second mounting seat 7 and a first threaded adjustment member, the base 1 comprises four parallel guide posts 11, the guide posts 11 comprise threaded sections and smooth sections, the first mounting seat 6 is slidably connected to the smooth end of the guide posts 11, the driving member 4 is fixedly connected to the base 1 and the output end is connected to the first mounting seat 6, the movable die plate 3 is fixedly connected to the first mounting seat 6, the first threaded adjustment member is threadedly connected to the threaded section of the guide posts 11, the second mounting seat 7 is sleeved on the threaded section of the guide posts 11 and is placed on the first threaded adjustment member, the fixed die plate 2 is fixedly connected to one side of the second mounting seat 7 and is opposite to the movable die plate 3, and the extrusion module 5 is connected to the other side of the second mounting seat 7 in a manner that it can move perpendicularly to the second mounting seat 7. By adjusting the first threaded adjustment member, the second mounting seat 7 and the extrusion die set 5 and the fixed die plate 2 thereon can be moved as a whole along the guide column 11 so as to be adjusted to a suitable position according to the height of a specific die.

[0023] In addition, if Figure 1 As shown, the extrusion module 5 includes an extrusion assembly 51, a threaded rod 52, and a second threaded adjustment member 53. One end of the threaded rod 52 is fixedly connected to the second mounting seat 7, and the second threaded adjustment member 53 is threadedly connected to the threaded rod 52. The extrusion assembly 51 is sleeved on the threaded rod 52 and placed on the second threaded adjustment member 53. By adjusting the second threaded adjustment member 53, the extrusion assembly 51 can be moved along the threaded rod 52 as a whole, so as to adjust the glue injection barrel on the extrusion assembly 51 to approach or move away from the fixed mold on the fixed mold plate 2, so that the nozzle 512 of the glue injection barrel maintains or breaks contact with the glue inlet of the fixed mold. Manual thread adjustment is adopted to make the adjustment more stable.

[0024] The structure of the glue injection cylinder of the existing injection molding machine generally includes a barrel 511 and a nozzle 512, and the nozzle 512 is rigidly connected to the barrel 511. When installing the mold, the position of the mold needs to be constantly adjusted so that the glue inlet on it is aligned with the nozzle 512, which is troublesome. In addition, during use, the components and molds of the injection molding machine may be slightly displaced due to vibration, resulting in a tendency of relative misalignment between the nozzle 512 and the glue inlet and being stressed. After a long time, glue leakage or even deformation of the nozzle 512 and the barrel 511 may occur. For this reason, a movable mechanism is arranged between the barrel 511 and the nozzle 512, and the two ends of the movable mechanism are connected to the barrel 511 and the nozzle 512 respectively, so that the nozzle 512 can move in a plane parallel to the fixed mold plate 2 and within a limited range defined by the movable mechanism, and the nozzle 512 is connected to the glue injection cylinder through the movable mechanism. When in use, the fixed mold and the movable mold of the mold are installed on the fixed mold plate 2 and the movable mold plate 3 respectively, and the glue inlet on the fixed mold is preliminarily aligned with the nozzle 512, and the nozzle 512 is smoothly adjusted by the second threaded adjustment member 53 to make it contact with the glue inlet of the fixed mold. During further adjustment, the nozzle 512 is limited by the glue inlet of the fixed mold, and will move to the other side of the offset, and finally align with the glue inlet. By setting up a movable mechanism, it is only necessary to make the glue inlet of the fixed mold preliminarily aligned with the nozzle 512, without the need to constantly adjust the position of the mold as in the prior art, and the overall adjustment is faster and more convenient. In addition, during use, due to the presence of the movable mechanism, the nozzle 512 and the glue inlet will automatically adjust due to slight displacement of the components and molds of the injection molding machine due to vibration, so as to avoid the problem of easy glue leakage due to relative misalignment and movement force, or even deformation of the nozzle 512 and the barrel 511.

[0025] In one embodiment, if Figure 2 As shown, the movable mechanism includes a funnel-shaped first glue outlet head 81, a pressure cap 82 and a drag reducing member 83. A flange is arranged around the large opening end of the first glue outlet head 81. The pressure cap 82 is threadedly connected to the glue outlet end of the barrel 511 and presses the drag reducing member 83, so that the drag reducing member 83 is against the flange of the first glue outlet head 81, so that the top surface of the large opening end of the first glue outlet head 81 is close to the plane parallel to the fixed template 2 on the glue outlet end of the barrel 511. The pressure cap 82 is provided with a limit opening for limiting the moving range of the first glue outlet head 81, and the nozzle 512 is fixedly connected to the small opening end of the first glue outlet head 81. The nozzle 512 is connected to the flow channel in the barrel 511 through the funnel-shaped flow channel in the first glue outlet head 81. When the nozzle 512 of this structure is subjected to lateral force, it will push the entire first glue outlet head 81 to move to the opposite side to prevent the force from always existing and damaging the nozzle 512 and even other components. When the nozzle 512 is against the glue inlet of the mold, the top surface of the large opening end of the first glue outlet head 81 fits more tightly with the plane on the glue outlet end of the barrel 511, which better prevents glue leakage.

[0026] The drag reducing member 83 of the above-mentioned embodiment adopts a plurality of the aforementioned balls to reduce drag by rolling friction. Specifically, a plurality of concave cavities evenly arranged around a plurality of limiting openings are provided on the pressure cover 82, and these balls are placed in the concave cavities one by one. Of course, a high temperature resistant rubber block can also be used. Due to the deformation of the rubber block, when the nozzle 512 is pressed against the glue inlet of the mold and subjected to lateral force, the first glue head 81 moves to the opposite side, causing the rubber block to deform. When the nozzle 512 is disconnected from the glue inlet, the rubber block will rebound to its original shape, driving the first glue head 81 to fully or partially reset. The rubber block is provided to reduce resistance by elastic deformation instead of friction, so that the first glue head 81 is easy to move.

[0027] In one embodiment, if Figure 3 As shown, the movable mechanism includes a connecting block 84 provided with a through flow channel and a second funnel-shaped glue outlet head 85, the connecting block 84 is spherically connected to the glue outlet end of the barrel 511 and can rotate within a limited conical angle relative to the barrel 511, the second glue outlet head 85 is spherically connected to the connecting block 84 and can rotate within a limited conical angle relative to the connecting block 84, and the nozzle 512 is fixedly connected to the small opening end of the first glue outlet head 81. Through the double spherical connection, the second glue outlet head 85 can swing in a limited space, so that the nozzle 512 can automatically deviate when subjected to lateral force and finally align with the glue inlet. Similarly, when the nozzle 512 is against the glue inlet of the mold, the two spherical connections are tighter and better sealed.

[0028] In the above embodiment, the movable mechanism also includes a limiting component, one end of which is movably connected to the glue outlet end of the cylinder body 511 and can move along a plane on the glue outlet end of the cylinder body 511 that is parallel to the fixed template 2, and the other end of the limiting component is arranged at the small outlet end of the second glue outlet head 85. The limiting component includes a fixed cover 86 and a limiting cover 87, and the fixed cover 86 is fixedly connected to the glue outlet end of the cylinder body 511 to cover the flange of one end of the limiting cover 87, so that the limiting cover 87 can move along a plane on the glue outlet end of the cylinder body 511 that is parallel to the fixed template 2, and the other end of the limiting cover 87 is sleeved or fixedly connected to the outer surface of the small outlet end of the second glue outlet head 85. The limit cover 87 is set so that it can only move along the plane on the glue outlet end of the barrel 511 parallel to the fixed template 2. In this way, when the other end of the limit cover 87 is sleeved on the second glue outlet head 85, the axis of the second glue outlet head 85 can be kept parallel to the axis of the barrel 511, so that the nozzle 512 can better fit the glue inlet.

[0029] The above embodiments are merely explanations of the present invention and are not limitations of the present invention. After reading this specification, those skilled in the art may make modifications to the embodiments without any creative contribution as needed. However, such modifications are protected by the patent law as long as they are within the scope of the claims of the present invention.

Claims

1. An injection molding machine that is easy to adjust and maintain alignment of glue injection, comprising a base, a fixed platen and a movable platen arranged on the base, a driving member for driving the movable platen to move, and an extrusion module with a glue injection cylinder that can move toward the fixed platen, characterized in that: The glue injection cylinder includes a cylinder body, a nozzle and a movable mechanism. The two ends of the movable mechanism are respectively connected to the cylinder body and the nozzle, so that the nozzle can move in a plane parallel to the fixed template and within a limited range defined by the movable mechanism. The nozzle is connected to the glue injection cylinder through the movable mechanism.

2. The injection molding machine for facilitating adjustment and maintaining alignment of injection molding according to claim 1, characterized in that: The movable mechanism includes a funnel-shaped first glue outlet head, a pressure cover and a drag reducing component. A flange is arranged around the large opening end of the first glue outlet head. The pressure cover is threadedly connected to the glue outlet end of the barrel and presses the drag reducing component so that the drag reducing component is against the flange of the first glue outlet head, so that the top surface of the large opening end of the first glue outlet head is close to the plane on the glue outlet end of the barrel that is parallel to the fixed template. A limit opening for limiting the moving range of the first glue outlet head is opened on the pressure cover, and the nozzle is fixedly connected to the small opening end of the first glue outlet head.

3. The injection molding machine for facilitating adjustment and maintaining alignment of injection molding according to claim 2, characterized in that: The gland is provided with a plurality of concave cavities evenly arranged around a plurality of limiting openings, the drag reducing member includes balls having the same number as the concave cavities, and the plurality of balls are placed in the concave cavities in a one-to-one correspondence.

4. The injection molding machine for facilitating adjustment and maintaining alignment of injection molding according to claim 1, characterized in that: The movable mechanism includes a connecting block provided with a through flow channel and a second funnel-shaped glue outlet head. The connecting block is spherically connected to the glue outlet end of the barrel and can rotate within a limited conical angle relative to the barrel. The second glue outlet head is spherically connected to the connecting block and can rotate within a limited conical angle relative to the connecting block. The nozzle is fixedly connected to the small opening end of the first glue outlet head.

5. The injection molding machine for facilitating adjustment and maintaining alignment of injection molding according to claim 4, characterized in that: The movable mechanism also includes a limiting component, one end of which is movably connected to the glue outlet end of the barrel and can move along a plane on the glue outlet end of the barrel that is parallel to the fixed template, and the other end of the limiting component is arranged at the small outlet end of the second glue outlet head, so that the axis of the second glue outlet head remains parallel to the axis of the barrel.

6. The injection molding machine for facilitating adjustment and maintaining alignment of injection molding according to claim 5, characterized in that: The limiting assembly includes a fixed cover and a limiting cover. The fixed cover is fixedly connected to the glue outlet end of the cylinder body to cover the flange of one end of the limiting cover, so that the limiting cover can move along a plane on the glue outlet end of the cylinder body parallel to the fixed template, and the other end of the limiting cover is sleeved on the outer surface of the small outlet end of the second glue outlet head.

7. An injection molding machine that facilitates adjustment and alignment of glue injection according to any one of claims 1 to 6, characterized in that: It also includes a first mounting seat, a second mounting seat and a first threaded adjustment member, the base includes four guide posts arranged in parallel, the guide posts include a threaded section and a smooth section, the first mounting seat is slidably connected to the smooth end of the guide post, the driving member is fixedly connected to the base and the output end is connected to the first mounting seat, the movable template is fixedly connected to the first mounting seat, the first threaded adjustment member is threadedly connected to the threaded section of the guide post, the second mounting seat is sleeved on the threaded section of the guide post and placed on the first threaded adjustment member, the fixed template is fixedly connected to one side of the second mounting seat and opposite to the movable template, and the extrusion module can be moved perpendicularly to the second mounting seat and connected to the other side of the second mounting seat.

8. The injection molding machine for facilitating adjustment and maintaining alignment of injection molding according to claim 7, characterized in that: The extrusion module includes an extrusion component, a threaded rod, and a second threaded adjustment member. One end of the threaded rod is fixedly connected to the second mounting seat, the second threaded adjustment member is threadedly connected to the threaded rod, and the extrusion component is sleeved on the threaded rod and placed on the second threaded adjustment member.

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