Injection blowing machine turret mechanism and working method thereof

Abstract

The present invention belongs to the field of plastic processing technology, specifically to injection molding, and more particularly to a turret mechanism of an injection-blowing machine and a working method thereof, which comprises: a shell, an opening and closing assembly and a clamping assembly; the shell is connected to the rotating plate; the opening and closing assembly is passed through the shell; the clamping assembly is arranged in the shell, and the clamping assembly is slidably connected to the shell; the opening and closing assembly is suitable for opening or closing the opening of the end face of the shell, and when the opening and closing assembly opens the opening, it drives the clamping assembly to move away from the axis of the shell, so that the clamping assembly extends out of the shell and is inserted into the rotating plate; the connection between the core rod and the rotating plate is strengthened during the gas injection process, so as to avoid affecting the gas injection accuracy due to vibration of the core rod, and avoid affecting the quality of the product.

Description

Technical Field

[0001] The invention belongs to the technical field of plastic processing, specifically relates to injection molding, and in particular to a turret mechanism of an injection-blowing machine and a working method thereof. Background Art

[0002] In the injection blow molding machine, hollow plastic products are produced by core rod injection molding. In the related technology, the core rod will vibrate or shake due to the influence of compressed gas flow during the gas injection process, causing the core rod to shift, which in turn affects the accuracy of gas injection and the quality of the hollow plastic product.

[0003] Therefore, due to the technical problem that the gas injection accuracy is affected by the vibration of the core rod during the gas injection process, which in turn affects the product quality, it is necessary to design a new turret mechanism of the injection-blowing machine and its working method.

[0004] It should be noted that the above information disclosed in this background technology section is only used to understand the background technology of the present application concept, and therefore, the above description is not considered to constitute information of the prior art. Summary of the invention

[0005] The disclosed embodiments at least provide a turret mechanism of an injection-blow molding machine and a working method thereof.

[0006] In a first aspect, an embodiment of the present disclosure provides a turret mechanism of an injection-blow molding machine, comprising:

[0007] A rotating plate and a plurality of mandrels;

[0008] The mandrel is arranged on the rotating plate, that is, a plurality of mandrels are arranged on the side wall of the rotating plate at equal distances, and the mandrel is suitable for injecting gas into the object; wherein the mandrel comprises: a shell, an opening and closing assembly and a clamping assembly;

[0009] The housing is connected to the rotating plate;

[0010] The opening and closing assembly is disposed in the housing;

[0011] The clamping assembly is arranged in the housing, and the clamping assembly is slidably connected to the housing;

[0012] The opening and closing assembly is suitable for opening or closing the opening of the end surface of the shell, and when the opening and closing assembly opens the opening, it drives the clamping assembly to move away from the axis of the shell, so that the clamping assembly extends out of the shell and is inserted into the rotating plate.

[0013] In an optional embodiment, the opening and closing assembly includes: a movable shaft and a plug;

[0014] The movable shaft is inserted into the housing, and one end of the movable shaft is connected to the plug;

[0015] A limit ring is provided at the other end of the movable shaft;

[0016] Part of the plug is located in the shell, and part of it passes through the opening of the shell and extends out of the shell;

[0017] The limiting ring is in contact with and slidably connected to the inner wall of the shell;

[0018] The portion of the plug located in the shell contacts the inner wall of the shell, and the plug is slidably connected to the shell.

[0019] In an optional embodiment, a first ring body is sleeved on the outer wall of the movable shaft, and the first ring body is connected to a surface of the limiting ring close to the plug;

[0020] The outer diameter of the first ring body is smaller than the outer diameter of the limiting ring;

[0021] A surface of the first ring body away from the limiting ring is an inclined surface.

[0022] In an optional embodiment, a second ring body is further sleeved on the outer wall of the movable shaft;

[0023] A third ring body is arranged on the inner wall of the shell;

[0024] The moving shaft passes through the third ring body;

[0025] The second ring body is closer to the plug than the first ring body;

[0026] The third ring body is closer to the plug than the second ring body;

[0027] A return spring is sleeved on the movable shaft, and the return spring is located between the second ring body and the third ring body.

[0028] In an optional embodiment, a plurality of columns are provided on a surface of the limiting ring facing the plug, and the length direction of the columns is parallel to the axial direction of the movable shaft;

[0029] The column is farther away from the moving axis than the first ring.

[0030] In an optional embodiment, a plurality of strip grooves are formed on the outer wall of the plug, and the length direction of the strip grooves is parallel to the axial direction of the movable shaft;

[0031] One end of the strip groove is communicated with a surface of the plug close to the limiting ring.

[0032] In an optional embodiment, the clamping assembly includes: a plurality of plug plates;

[0033] The plug plate is arranged in the housing, and the plug plate is slidably connected to the housing;

[0034] One end surface of the plug plate is close to the moving shaft;

[0035] The plug board is provided with a plurality of through holes;

[0036] The plug board is provided with a plurality of slots, and the slots correspond to the columns;

[0037] The first ring body is located between the limiting ring and the inserting plate.

[0038] In an optional implementation, when the moving shaft drives the first ring body to approach the third ring body, the first ring body contacts the plug plate to squeeze the plug plate away from the moving shaft, and the plug plate extends from the shell and is inserted into the rotating plate.

[0039] In an optional embodiment, one end surface of the housing is open;

[0040] A plurality of air passages are provided on the other end surface of the shell, and the air passages correspond to the through holes.

[0041] In an optional embodiment, the rotating plate is triangular;

[0042] The top surface of the rotating plate is connected with a driving assembly, and the driving assembly is suitable for driving the rotating plate to rotate.

[0043] In a second aspect, the present disclosure also provides a working method using the above-mentioned injection-blow molding machine turret mechanism, comprising:

[0044] The opening and closing component opens or closes the opening of the end surface of the shell, and drives the clamping component to move away from the axis of the shell when the opening and closing component opens the opening, so that the clamping component extends out of the shell and is inserted into the rotating plate.

[0045] The beneficial effect of the present invention is that the turret mechanism of the injection-blowing machine and its working method include a rotating plate and a plurality of core rods; the core rods are arranged on the rotating plate, that is, a plurality of core rods are equidistantly arranged on the side walls of the rotating plate, and the core rods are suitable for injecting gas into an object; wherein the core rods include: a shell, an opening and closing assembly and a clamping assembly; the shell is connected to the rotating plate; the opening and closing assembly is passed through the shell; the clamping assembly is arranged in the shell, and the clamping assembly is slidably connected to the shell; the opening and closing assembly is suitable for opening or closing the opening on the end face of the shell, and when the opening and closing assembly opens the opening, it drives the clamping assembly to move away from the axis of the shell, so that the clamping assembly extends out of the shell and is inserted into the rotating plate; the connection between the core rod and the rotating plate is strengthened during the gas injection process, and the gas injection accuracy is affected by the vibration of the core rod, thereby avoiding affecting the quality of the product.

[0046] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention are realized and obtained by the structures particularly pointed out in the description, claims and drawings.

[0047] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, this article specifically cites preferred embodiments and provides detailed descriptions as follows in conjunction with the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0049] Figure 1 A schematic structural diagram of a core rod in a turret mechanism of an injection-blow molding machine provided in an embodiment of the present disclosure;

[0050] Figure 2 A cross-sectional view of a mandrel provided for an embodiment of the present disclosure;

[0051] Figure 3 A partial cross-sectional view of a mandrel provided for an embodiment of the present disclosure;

[0052] Figure 4 A schematic diagram of the structure of the plug provided in an embodiment of the present disclosure.

[0053] In the figure:

[0054] 1 shell, 11 third ring body, 12 airway;

[0055] 2 moving shaft, 21 limiting ring, 22 first ring body, 23 second ring body, 24 return spring, 25 column;

[0056] 3 plugs, 31 strip grooves;

[0057] 4 plug-in boards, 41 through holes, 42 slots. DETAILED DESCRIPTION

[0058] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are 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 creative work are within the scope of protection of the present invention.

[0059] As used herein, the phrases "in one embodiment," "according to one embodiment," "in some embodiments," and the like generally refer to the fact that the particular feature, structure, or characteristic following the phrase may be included in at least one embodiment of the present disclosure. Therefore, a particular feature, structure, or characteristic may be included in more than one embodiment of the present disclosure, so that these phrases do not necessarily refer to the same embodiment. As used herein, the terms "example," "exemplary," and the like are used to "serve as an example, instance, or illustration." Any implementation, aspect, or design described herein as "example" or "exemplary" is not necessarily to be construed as preferred or superior to other implementations, aspects, or designs. On the contrary, the use of the terms "example," "exemplary," and the like is intended to present concepts in a concrete manner.

[0060] Research has found that the disadvantage of the prior art is that the core rod will vibrate or shake due to the influence of the compressed gas flow during the gas injection process. That is, the vibration and shaking of the core rod as a whole and the vibration and shaking of the moving axis inside the core rod caused by the airflow will affect the accuracy of gas injection and affect the quality of the hollow plastic product.

[0061] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0062] like Figures 1 to 4 As shown, in at least one disclosed embodiment, a turret mechanism of an injection-blowing machine is provided, comprising: a rotating plate and a plurality of core rods; the core rods are arranged on the rotating plate, that is, a plurality of core rods are equidistantly arranged on the side walls of the rotating plate, and the core rods are suitable for injecting gas into an object; wherein the core rods comprise: a shell 1, an opening and closing assembly and a clamping assembly; the shell 1 is connected to the rotating plate; the opening and closing assembly is passed through the shell 1; the clamping assembly is arranged in the shell 1, and the clamping assembly is slidably connected to the shell 1; the opening and closing assembly is suitable for opening or closing the opening on the end face of the shell 1, and when the opening and closing assembly opens the opening, it drives the clamping assembly to move away from the axis of the shell 1, so that the clamping assembly extends out of the shell 1 and is inserted into the rotating plate; the connection between the core rod and the rotating plate is strengthened during the gas injection process, so as to avoid affecting the gas injection accuracy due to the vibration of the core rod, and avoid affecting the quality of the product.

[0063] A groove may be provided in the rotating plate, and the clamping assembly will extend into the groove after extending out of the shell 1. The cooperation between the clamping assembly and the groove can prevent the shell 1 from vibrating and shaking due to the influence of airflow, thereby preventing the entire core rod from vibrating and shaking.

[0064] like Figure 2As shown, in an optional embodiment, the opening and closing component includes: a moving shaft 2 and a plug 3; the moving shaft 2 is inserted into the shell 1, and one end of the moving shaft 2 is connected to the plug 3; a limiting ring 21 is provided at the other end of the moving shaft 2; part of the plug 3 is located in the shell 1, and part of it passes through the opening of the shell 1 and extends out of the shell 1; the limiting ring 21 contacts and is slidably connected to the inner wall of the shell 1; the part of the plug 3 located in the shell 1 contacts the inner wall of the shell 1, and the plug 3 is slidably connected to the shell 1; the plug 3 can move the shell 1 The end face of the opening is blocked, and a gap appears between the plug 3 and the end face of the shell 1 through the movement of the movable shaft 2, and the blocked opening is opened so that the airflow in the shell 1 flows out through the gap to inject air into the plastic preform; the limiting ring 21 can limit the movement of the movable shaft 2 to prevent the movable shaft 2 from a large offset, etc.; the movable shaft 2 can be driven to move by a cylinder, an oil cylinder, etc.; the diameter of the part of the plug 3 located in the shell 1 is smaller than the diameter of the part of the plug 3 located outside the shell 1. In the initial state, the plug 3 located outside the shell 1 can block the opening, and as the length of the plug 3 extending out of the shell 1 increases, the opening is opened.

[0065] like Figure 3 As shown, in an optional embodiment, a first ring body 22 is sleeved on the outer wall of the movable shaft 2, and the first ring body 22 is connected to a side of the limiting ring 21 close to the plug 3; the outer diameter of the first ring body 22 is smaller than the outer diameter of the limiting ring 21; the side of the first ring body 22 away from the limiting ring 21 is a slope; the slope can be better inserted between the plug plate 4 and the movable shaft 2, and as the movable shaft 2 moves through the slope, the distance that the plug plate 4 moves away from the movable shaft 2 increases, and the length of the plug plate 4 extending from the outer wall of the shell 1 increases, which facilitates the insertion of the plug plate 4 into the groove, and facilitates the shell 1 to be stabilized by the cooperation between the plug plate 4 and the groove.

[0066] like Figure 3 As shown, in an optional embodiment, a second ring body 23 is also sleeved on the outer wall of the movable shaft 2; a third ring body 11 is arranged on the inner wall of the shell 1; the movable shaft 2 passes through the third ring body 11; the second ring body 23 is closer to the plug 3 than the first ring body 22; the third ring body 11 is closer to the plug 3 than the second ring body 23; a reset spring 24 is sleeved on the movable shaft 2, and the reset spring 24 is located between the second ring body 23 and the third ring body 11; the movable shaft 2 drives the second ring body 23 to move during the movement, and the reset spring 24 is compressed when the second ring body 23 approaches the third ring body 11, and after the gas injection is completed, the movable shaft 2 is reset by the reset spring 24; the inner diameter of the third ring body 11 is larger than the diameter of the movable shaft 2, that is, there is a gap between the inner diameters of the movable shaft 2 and the third ring body 11, which is convenient for gas to flow through.

[0067] In an optional embodiment, a plurality of columns 25 are provided on a surface of the limiting ring 21 facing the plug 3, and the length direction of the columns 25 is parallel to the axial direction of the movable shaft 2; the columns 25 are farther away from the movable shaft 2 than the first ring body 22; the columns 25 can be inserted into the slot 42, and the limiting ring 21 is combined with the plug plate 4 through the cooperation between the columns 25 and the slot 42, and the plug plate 4 is limited after entering the groove, thereby limiting the movable shaft 2 to prevent the movable shaft 2 from vibrating or shaking due to airflow.

[0068] like Figure 4 As shown, in an optional embodiment, a plurality of strip grooves 31 are provided on the outer wall of the plug 3, and the length direction of the strip grooves 31 is parallel to the axial direction of the movable shaft 2; one end of the strip grooves 31 is connected to a side of the plug 3 close to the limit ring 21; the gas can flow through the strip grooves 31 to the gap between the opening of the shell 1 and the plug 3, so as to facilitate the gas to flow out of the shell 1.

[0069] In an optional embodiment, the clamping assembly includes: a plurality of plug plates 4; the plug plates 4 are arranged in the shell 1, and the plug plates 4 are slidably connected to the shell 1; one end face of the plug plate 4 is close to the movable shaft 2; a plurality of through holes 41 are provided on the plug plate 4; a plurality of slots 42 are provided on the plug plate 4, and the slots 42 correspond to the columns 25; the first ring body 22 is located between the limit ring 21 and the plug plate 4; there can be four plug plates 4, and the shell 1 is fixed firmly from four positions; the through holes 41 can facilitate the gas to flow from the outside into the shell 1.

[0070] In an optional embodiment, when the movable shaft 2 drives the first ring body 22 to approach the third ring body 11, the first ring body 22 contacts the plug plate 4 to squeeze the plug plate 4 away from the movable shaft 2, and the plug plate 4 extends from the shell 1 and is inserted into the rotating plate.

[0071] In an optional embodiment, one end face of the shell 1 is open; a plurality of air passages 12 are provided on the other end face of the shell 1, and the air passages 12 correspond to the through holes 41; the air passages 12 can be connected to an external gas source, and the high-pressure gas generated by the gas source can enter the interior of the shell 1 through the air passages 12, that is, when the through holes 41 are aligned with the air passages 12, external gas can enter the shell 1.

[0072] In an optional embodiment, the rotating plate is triangular; the top surface of the rotating plate is connected to a driving assembly, and the driving assembly is suitable for driving the rotating plate to rotate; the three sides of the triangle can correspond to three workstations, and the driving assembly can be a motor, etc., and the rotating plate is rotated by the driving assembly so that the core rod can be aligned with different workstations. For example, some workstations are used for loading, some workstations are used for gas injection, some workstations are used for unloading, and so on.

[0073] The first ring body 22 is pressed against the plug plate 4, and the inclined surface of the first ring body 22 is inserted between the plug plate 4 and the moving shaft 2, and the plug plate 4 is pushed away from the moving shaft 2 by the inclined surface, and the plug plate 4 extends out from the outer wall of the shell 1, and enters The plug 4 is inserted into the groove, and as the plug plate 4 moves, the through hole 41 is gradually aligned with the airway 12. When the through hole 41 is aligned with the airway 12, the column 25 is inserted into the slot 42. At this time, the part of the plug plate 4 extending out of the shell 1 cooperates with the groove, so that the shell 1 is limited and stable. The column 25 cooperates with the slot 42 to limit the limit ring 21 and then the movable shaft 2 is limited and stable. The length of the plug 3 extending out of the shell 1 increases, and the strip groove 31 partially exposes the shell 1. The gas can flow out of the shell 1 through the strip groove 31; a spring can be connected between the plug plate 4 and the shell 1. After the gas injection is completed, the movable shaft 2 can be reset by the reset spring 24, and the plug plate 4 can be reset by the spring at this time; the way to connect the spring between the plug plate 4 and the shell 1 can be that convex plates are set on both sides of the plug plate 4, and a groove can be opened on the inner wall of the hole for extending the plug plate 4, the convex plate is in the groove, the convex plate is smaller than the size of the groove, and a spring is connected between the inner wall of the groove and the convex plate.

[0074] At least one other disclosed embodiment also provides a working method using the above-mentioned injection-blowing machine turret mechanism, including: an opening and closing component opens or closes the opening on the end face of the shell 1, and when the opening and closing component opens the opening, it drives the clamping component to move away from the axis of the shell 1, so that the clamping component extends out of the shell 1 and is inserted into the rotating plate.

[0075] In summary, the turret mechanism of the injection-blowing machine and its working method include a rotating plate and a plurality of core rods; the core rods are arranged on the rotating plate, that is, a plurality of core rods are equidistantly arranged on the side walls of the rotating plate, and the core rods are suitable for injecting gas into objects; wherein the core rods include: a shell 1, an opening and closing assembly and a clamping assembly; the shell 1 is connected to the rotating plate; the opening and closing assembly is passed through the shell 1; the clamping assembly is arranged in the shell 1, and the clamping assembly is slidably connected to the shell 1; the opening and closing assembly is suitable for opening or closing the opening on the end face of the shell 1, and when the opening and closing assembly opens the opening, it drives the clamping assembly to move away from the axis of the shell 1, so that the clamping assembly extends out of the shell 1 and is inserted into the rotating plate; the connection between the core rod and the rotating plate is strengthened during the gas injection process, so as to avoid affecting the gas injection accuracy due to vibration of the core rod, and avoid affecting the quality of the product.

[0076] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it 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 a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0077] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, which are 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 position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, terms such as "first", "second" and other numerical terms do not imply a sequence or order when used herein, unless explicitly indicated above.

[0078] Spatially relative terms, such as "inside," "outside," "below," "beneath," "below," "above," "on," and the like, may be used herein to facilitate describing the relationship of one element or feature to another element or feature as illustrated in the figures. Spatially relative terms may be intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures were turned over, elements described as "below" or "beneath" other elements or features would be oriented "above" the other elements or features.

[0079] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A turret mechanism of an injection-blow molding machine, characterized in that: include: A rotating plate and a plurality of mandrels; The core rods are arranged on the rotating plate, that is, a plurality of core rods are arranged at equal distances on the side wall of the rotating plate, and the core rods are suitable for injecting gas into the object; The mandrel comprises: a housing, an opening and closing assembly and a clamping assembly; The housing is connected to the rotating plate; The opening and closing assembly is disposed in the housing; The clamping assembly is arranged in the housing, and the clamping assembly is slidably connected to the housing; The opening and closing assembly is suitable for opening or closing the opening of the end surface of the shell, and when the opening and closing assembly opens the opening, it drives the clamping assembly to move away from the axis of the shell, so that the clamping assembly extends out of the shell and is inserted into the rotating plate; The opening and closing assembly comprises: a moving shaft and a plug; The movable shaft is inserted into the housing, and one end of the movable shaft is connected to the plug; A limit ring is provided at the other end of the movable shaft; The plug is partially located in the shell, and partially passes through the opening of the shell and extends out of the shell; The limiting ring is in contact with and slidably connected to the inner wall of the shell; The portion of the plug located in the shell contacts the inner wall of the shell, and the plug is slidably connected to the shell; A first ring body is sleeved on the outer wall of the movable shaft, and the first ring body is connected to a side of the limiting ring close to the plug; The outer diameter of the first ring body is smaller than the outer diameter of the limiting ring; A surface of the first ring body away from the limiting ring is an inclined surface; A second ring body is also sleeved on the outer wall of the movable shaft; A third ring body is arranged on the inner wall of the shell; The moving shaft passes through the third ring body; The second ring body is closer to the plug than the first ring body; The third ring body is closer to the plug than the second ring body; A return spring is sleeved on the movable shaft, and the return spring is located between the second ring body and the third ring body; A plurality of columns are arranged on a surface of the limiting ring facing the plug, and the length direction of the columns is parallel to the axial direction of the moving shaft; The column is farther away from the moving axis than the first ring; The clamping assembly includes: a plurality of plug plates; The plug plate is arranged in the housing, and the plug plate is slidably connected to the housing; One end surface of the plug plate is close to the moving shaft; The plug board is provided with a plurality of through holes; The plug board is provided with a plurality of slots, and the slots correspond to the columns; The first ring body is located between the limiting ring and the plug plate; When the moving shaft drives the first ring body to approach the third ring body, the first ring body contacts the inserting plate to press the inserting plate away from the moving shaft, and the inserting plate extends from the shell body and is inserted into the rotating plate.

2. The turret mechanism of the injection-blow molding machine according to claim 1, characterized in that: A plurality of strip grooves are provided on the outer wall of the plug, and the length direction of the strip grooves is parallel to the axial direction of the movable shaft; One end of the strip groove is communicated with a surface of the plug close to the limiting ring.

3. The turret mechanism of the injection-blow molding machine according to claim 1, characterized in that: One end surface of the shell is open; A plurality of air passages are provided on the other end surface of the shell, and the air passages correspond to the through holes.

4. The turret mechanism of the injection-blow molding machine according to claim 1, characterized in that: The rotating plate is triangular in shape; The top surface of the rotating plate is connected with a driving assembly, and the driving assembly is suitable for driving the rotating plate to rotate.

5. A working method using the turret mechanism of the injection-blow molding machine as claimed in claim 1, characterized in that: include: The opening and closing component opens or closes the opening of the end surface of the shell, and drives the clamping component to move away from the axis of the shell when the opening and closing component opens the opening, so that the clamping component extends out of the shell and is inserted into the rotating plate.

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