CN113977911A - Mould correcting method for cable extruder head - Google Patents
Mould correcting method for cable extruder head Download PDFInfo
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- CN113977911A CN113977911A CN202111238474.6A CN202111238474A CN113977911A CN 113977911 A CN113977911 A CN 113977911A CN 202111238474 A CN202111238474 A CN 202111238474A CN 113977911 A CN113977911 A CN 113977911A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
- B29C48/302—Extrusion nozzles or dies being adjustable, i.e. having adjustable exit sections
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/34—Electrical apparatus, e.g. sparking plugs or parts thereof
- B29L2031/3462—Cables
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- Manufacturing & Machinery (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
A mould calibration method of a cable extruder head is characterized in that the radial relative position of a mould core and a mould sleeve is adjusted until the axes of the mould core and the mould sleeve are collinear; the method for adjusting the radial relative position of the mold core and the mold sleeve comprises a fixed type and a fine adjustment type. A set of adjusting mechanism is newly designed, and adjustment-free and radial micro-adjustment can be used on the same set of adjusting mechanism in a switchable manner; the design method comprises the following steps: 1) selecting a radial fine adjustment object as a mold core or a mold sleeve; 2) selecting the position of a radial fine adjustment mechanism of the die sleeve; 3) designing a radial fine adjustment mechanism; 4) designing an adjustment-free mechanism; 5) designing a switching mechanism of an adjustment-free mechanism and a radial fine adjustment mechanism; 6) and switching between the adjustment-free mechanism and the radial fine adjustment mechanism. The method can switch the mode of adjustment-free and fine adjustment mold calibration by rotating the mold calibration ring so as to be suitable for different production requirements.
Description
Technical Field
The invention relates to a machine head of an extruder, in particular to a die calibration method of a cable extruder head.
Background
The co-core degree matching between the mold core and the mold sleeve of the existing cable extruder head generally comprises a fine adjustment mode and an adjustment-free mode.
The common fine tuning machine head changes the homocentric degree matching of a mould core and a mould sleeve by adjusting a radial mould correcting screw so as to adjust the structure of the extruded skin layer of the cable. The method has higher operation requirement, generates more waste products in the adjusting process and influences the production efficiency. In a common adjustment-free machine head, the die sleeve and the die sleeve are fixed on the extruder head, and the die sleeve are relatively fixed without die calibration. However, the machine head has higher requirements on processing and installation, has high requirements on maintenance of the machine head, and greatly shortens the service life of the machine head relatively.
Disclosure of Invention
The invention provides a die calibration method of a cable extruder head and the cable extruder head, aiming at overcoming the defects in the prior art, and effectively realizing that the die calibration mode of the cable extruder head can be changed as required. The drawing is as follows:
a mould calibration method of a cable extruder head is characterized in that the radial relative position of a mould core and a mould sleeve is adjusted until the axes of the mould core and the mould sleeve are collinear; the method for adjusting the radial relative position of the mold core and the mold sleeve comprises a fixed type and a fine adjustment type. Designing a set of adjusting mechanism, wherein the same set of adjusting mechanism can be used in a switchable manner without adjustment and with radial fine adjustment; the design method comprises the following steps:
1) selecting a radial fine adjustment object as a mold core or a mold sleeve:
because the mold core is connected with the axial position of the extruder head, the structural interference generated by the change of the radial position of the mold core comprises a extruder head shell, a glue guide device and a glue running channel;
the die sleeve is connected in the shell of the extruder head through a die sleeve flange, and the structural interference of the radial position of the die sleeve is limited to the die sleeve flange;
selecting a matched die sleeve to carry out radial fine adjustment;
2) selecting the position of the die sleeve radial fine adjustment mechanism:
the die sleeve is a high-precision part, and the structure of the die sleeve is fixed; the die sleeve and the die sleeve flange are relatively fixed, and the radial fine adjustment of the die sleeve is realized through the radial fine adjustment of the die sleeve flange, so that the radial relative position of the die core and the die sleeve is adjusted;
3) designing a radial fine adjustment mechanism:
the design principle is as follows: the inner ring and the outer ring are in clearance fit with each other, and the deviation degree of the circle centers of the inner ring and the outer ring is adjusted in a mode of adjusting the proximity degree of the outer edge of the inner ring and the inner edge of the outer ring;
the structure is realized as follows: a cylindrical mould correcting ring is sleeved outside the cylindrical mould sleeve flange, and a gap is reserved between the inner wall of the mould correcting ring and the outer wall of the mould sleeve flange; a plurality of axisymmetric screw holes penetrate through the side wall of the die correcting ring, and a correcting screw is screwed in each screw hole; the distance between each calibration screw and the axis of the die correction ring is adjusted to drive the die sleeve flange, so that the degree of deviation of the axis of the die sleeve flange from the axis of the die correction ring is adjusted;
4) designing an adjustment-free mechanism:
the design principle is as follows: the inner ring and the outer ring are fixed in a structural form of closely fitting and matching the inner ring and the outer ring, and then the circle centers of the inner ring and the outer ring are overlapped;
the structure is realized as follows: a cylindrical mould correcting ring is sleeved outside the cylindrical mould sleeve flange, and the inner wall of the mould correcting ring is closely attached to the outer wall of the mould sleeve flange; the adjustment is avoided by fixing the relative positions of the die sleeve flange/the die correction ring and the die core;
5) the design exempts from the switching mechanism of adjustment mechanism and radial fine-tuning:
the design principle is as follows: respectively reducing the outer diameter of part of the inner ring and enlarging the inner diameter of the part of the outer ring in a close fit structure form of the inner ring and the outer ring; the enlarged portion of the outer ring is sufficient to receive the unreduced portion of the inner ring;
rotating the outer ring to make the unchanged parts of the inner ring and the outer ring closely attached to each other, so that the circle centers of the inner ring and the outer ring are superposed in the state;
rotating the outer ring to make the non-reduced part of the inner ring correspond to the enlarged part of the outer ring, so that the inner ring is not limited by the outer ring in the state and the position of the inner ring is adjustable;
the structure is realized as follows: the outer diameter of the die sleeve flange is smaller than the outer diameter of the die correction ring;
the inner wall of the mould correcting ring is provided with a plurality of axisymmetric inner bosses facing to the axis of the mould correcting ring,
the outer wall of the die sleeve flange is provided with a plurality of axisymmetric outer bosses back to the axis of the die sleeve flange;
the cylindrical surface where the top surface of each inner boss is located and the cylindrical surface where the bottom surface of each outer boss is located are the same cylindrical surface;
a plurality of screw holes are formed in the side wall of the mold correction ring, and mold correction screws are screwed in the screw holes; each screw hole is symmetrical around the axis of the die correcting ring and is positioned between two adjacent inner bosses; the space between two adjacent inner bosses is enough to accommodate one outer boss;
6) the switching between the adjustment-free mechanism and the radial fine adjustment mechanism is as follows:
the design principle of the step 5) is illustrated:
rotating the mold correcting ring to make the inner boss and the outer boss correspond in position, and fitting the top surface and the bottom surface of the inner boss and the outer boss to form an adjusting-free mechanism;
and rotating the mold correcting ring to enable the position of the outer boss to correspond to the space position between the two inner bosses, and forming a radial fine adjustment mechanism.
Further, in the step 5), the pattern defined by the outer edge of the inner ring and the pattern defined by the inner edge of the outer ring are similar patterns.
The cable extruder head capable of switching the die calibration mode matched with the method comprises the following steps: the device comprises a shell, a connecting flange, a glue guide device, a mold core, a mold sleeve combining cap and a mold sleeve flange;
a cavity penetrating through the front and the rear parts is formed in the shell;
the side wall of the shell is provided with a through hole as a side wall fluid channel; the connecting flange is connected to the side wall of the shell, a flange fluid channel connected to the hollow position of the flange is communicated with the side wall fluid channel, and the side wall fluid channel is communicated with the cavity in the shell;
the glue guide device extends into the shell from the rear part of the cavity in the shell, and the outer wall of the glue guide device is closely attached to the inner wall of the cavity; the outer wall of the glue guide is provided with a groove, and the groove and the inner wall of the cavity enclose a fluid channel of the glue guide; one end of the fluid channel of the glue guide device is communicated with the fluid channel of the side wall;
the mold core is connected with the front end of the glue guide device and extends out of the cavity of the shell from inside to outside;
the die sleeve is sleeved at the rear part of the hollow of the cylindrical die sleeve flange, the die sleeve is capped at the front part of the hollow of the die sleeve flange, and the die sleeve is fastened in the hollow of the die sleeve flange by the die sleeve and the cap; the die sleeve flange is connected with the shell, and a die sleeve flange fluid channel is enclosed by the die sleeve flange and the outer wall of the front end of the glue guide device; the die sleeve is sleeved outside the die core, and the die sleeve and the die core enclose a die sleeve fluid channel; two ends of the die sleeve flange fluid channel are respectively communicated with the glue guide device fluid channel and the die sleeve fluid channel;
the wiring channel of the cable extruder head penetrates through the glue guide device, the mold core, the mold sleeve and the mold sleeve nut; the axis of the wiring channel is superposed on the straight line l.
The mould correcting device also comprises a cylindrical mould correcting ring; the die correction ring and the die sleeve flange form a die correction mechanism;
the axis d of the die sleeve flange is parallel to or coincided with the straight line l, and the inner wall of the die sleeve flange is provided with a die sleeve connecting mechanism and a die sleeve cap combining connecting mechanism; the die sleeve flange is provided with a machine head connecting structure for connecting an extrusion machine head, and the machine head connecting structure is provided with a radial fine adjustment space;
the axis of the die correcting ring is superposed on the straight line l, and the rear part of the die correcting ring is provided with a limiting mechanism for radially limiting the die correcting ring on the extruder head;
the inner diameter of the die correcting ring corresponds to the outer diameter of the die sleeve flange; the die sleeve flange penetrates through the hollow part of the die correction ring from front to back; the relative positions of the die correcting ring and the die sleeve flange are circumferentially adjustable;
the inner wall of the die correction ring is provided with a plurality of inner bosses facing the straight line l, and the outer wall of the die sleeve flange is provided with a plurality of outer bosses facing away from the axis d;
each inner boss is symmetrical around the straight line l, and the cylindrical surface where the top surface of each inner boss is located is a surface a; each outer boss is symmetrical around an axis d, and the cylindrical surface where the bottom surface of each outer boss is located is also a surface a;
a plurality of screw holes are formed in the side wall of the mold correction ring, and mold correction screws are screwed in the screw holes; each screw hole is symmetrical around the straight line l and is positioned between two adjacent inner bosses; the space between two adjacent inner bosses is enough to accommodate one outer boss.
Preferably: on the radial section, the graph formed by the inner wall of the mould correcting ring and the graph formed by the inner wall of the mould sleeve flange are similar graphs.
The distance between the surface a and the bottom of the position between two adjacent inner bosses is 1-5 mm; the distance between the surface a and the top of the position between two adjacent outer bosses is 1-5 mm. That is, in an ideal situation, the deviation degree of the axis d of the die sleeve flange from the straight line l is + -1 to + -5 mm.
Further:
the rear end face of the die correcting ring is connected with an annular step, the axis of the annular step is superposed with a straight line l, and the inner diameter of the annular step is larger than that of the die correcting ring; the annular step forms a limiting mechanism which is radially limited on the extruder head.
The outer diameter of a round cake-shaped flange seat used for connecting a die sleeve flange on the front end of the shell is the same as the inner diameter of the annular step, and the die correcting ring is sleeved outside the flange seat through the annular step and is tightly matched with the annular step.
The machine head connecting structures are symmetrically provided with a plurality of groups around an axis d, and each group of machine head connecting structures comprise through holes and connecting screws in the through holes; the inner diameter of the front part of the through hole is larger than the outer diameter of the main body of the connecting screw, and the inner diameter of the rear part of the through hole is larger than the outer diameter of the screw head of the connecting screw; the clearance between through-hole and the connecting screw constitutes radial fine setting space. The connecting screw passes through the through hole and is connected with the flange seat on the extruder head shell.
The hollow part of the die sleeve flange is divided into a front section and a rear section; the rear section of the die sleeve flange is hollow and is in a circular truncated cone shape corresponding to the shape of the die sleeve, and the small bottom of the circular truncated cone faces the rear part of the die sleeve flange; the front section of the die sleeve flange is hollow and is in a cylindrical shape, and the inner wall of the front section of the die sleeve flange, which is hollow, is provided with an internal thread corresponding to the external thread of the die sleeve and the cap.
The outer wall of the die sleeve flange is connected with an annular convex, and the distance between the rear end face of the annular convex and the rear end face of the die sleeve flange is not greater than the distance between the front end face and the rear end face of the die correction ring.
The die ring is clamped between a flange seat on the extruder head shell and a die sleeve flange.
In order to be convenient to use, the outer wall of the die correcting ring is connected with a handle; the front end face of the die correcting ring and the outer wall of the die sleeve flange are provided with corresponding alignment marks.
During machining, the die correction ring and the annular step on the die correction ring are of an integral structure and can be machined from an annular blank by a machine tool. Similarly, the die case flange and the annular protrusion thereon are of unitary construction and can be machined from an annular blank by a machine tool.
The rear end face of the shell is provided with an annular indent, and a plurality of counter bores for placing heaters (electric heating rods) are uniformly distributed in the annular indent; a mounting groove for placing a heater controller is reserved on the side surface of the annular indent, and the mounting groove is exposed out of the side wall of the shell;
the side wall of the rear part of the glue guide device is connected with a limiting boss (a limiting screw is screwed on the limiting boss), the side wall of the inner cavity of the shell is provided with an inner recess corresponding to the limiting boss, and the limiting boss is arranged in the inner recess.
A die sleeve flange heater is wrapped outside the outer wall of the die sleeve flange; a temperature measuring hole for mounting a temperature sensor is formed in the die sleeve flange; the connecting flange is provided with a temperature measuring hole for mounting a temperature sensor.
The method can switch the mode of adjustment-free and fine adjustment mold calibration by rotating the mold calibration ring so as to be suitable for different production requirements.
Drawings
FIG. 1 is a schematic view of the profile of a cable extruder head of the present process;
FIG. 2 is a schematic circumferential cross-sectional view of the present cable extruder head of the process (with the handle position facing downward for clarity of illustration);
FIG. 3 is a schematic view of the assembly of the cable extruder head of the present method;
FIG. 4 is a schematic radial cross-sectional view of a pattern correction mechanism (fine tuning mode);
FIG. 5 is a schematic radial cross-sectional view of the pattern correction mechanism (fixed mode);
FIG. 6 is a schematic view of the housing (side rear view);
FIG. 7 is a schematic view of the assembly of the glue guide and the mold core;
in the figure: the die sleeve comprises a straight line l, an axis d, a die sleeve flange 1, a die sleeve 2, a die calibration ring 3, an inner boss 4, an outer boss 5, a screw hole 6, a die calibration screw 7, an annular step 8, a through hole 9, a connecting screw 10, a die sleeve combining cap 11, an annular outer protrusion 12, a handle 13, an alignment mark 14, a flange seat 15, a shell 16, a glue guider 17, an adjusting screw 18, an adjusting nut 19, a limiting screw 20, a connecting flange 21, a temperature measuring hole 22, a die sleeve flange heater 23, a die core 24, a flange fluid channel 25, a glue guider fluid channel 26, a die sleeve flange fluid channel 27, a die sleeve fluid channel 28, a routing channel 29, a gap 30 at the bottom of a position between a surface a and two adjacent inner bosses, an annular indent 31, a counter bore 32, a mounting groove 33, an indent 34, a side wall fluid channel 35 and a groove 36.
Detailed Description
Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as up, down, front, rear, left, right, etc., is the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of the description of the present invention, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the invention, the meaning of a plurality of the terms is one or more, the meaning of a plurality of the terms is two or more, and the terms larger, smaller, larger, etc. are understood to include no essential numbers, and the terms larger, smaller, etc. are understood to include essential numbers. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly defined, terms such as setup, installation, connection, and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the terms in the present invention in combination with the detailed contents of the technical solutions.
The invention is described in further detail below with reference to the figures and the examples of embodiment.
A mould calibration method of a cable extruder head is characterized in that the radial relative position of a mould core and a mould sleeve is adjusted until the axes of the mould core and the mould sleeve are collinear; the method for adjusting the radial relative position of the mold core and the mold sleeve comprises a fixed type and a fine adjustment type;
designing a set of adjusting mechanism, wherein the same set of adjusting mechanism can be used in a switchable manner without adjustment and with radial fine adjustment; the design method comprises the following steps:
1) selecting a radial fine adjustment object as a mold core or a mold sleeve:
because the mold core is connected with the axial position of the extruder head, the structural interference generated by the change of the radial position of the mold core comprises a extruder head shell, a glue guide device and a glue running channel;
the die sleeve is connected in the shell of the extruder head through a die sleeve flange, and the structural interference of the radial position of the die sleeve is limited to the die sleeve flange;
selecting a matched die sleeve to carry out radial fine adjustment;
2) selecting the position of the die sleeve radial fine adjustment mechanism:
the die sleeve is a high-precision part, and the structure of the die sleeve is fixed; the die sleeve and the die sleeve flange are relatively fixed, and the radial fine adjustment of the die sleeve is realized through the radial fine adjustment of the die sleeve flange, so that the radial relative position of the die core and the die sleeve is adjusted;
3) designing a radial fine adjustment mechanism:
the design principle is as follows: the inner ring and the outer ring are in clearance fit with each other, and the deviation degree of the circle centers of the inner ring and the outer ring is adjusted in a mode of adjusting the proximity degree of the outer edge of the inner ring and the inner edge of the outer ring;
the structure is realized as follows: a cylindrical mould correcting ring is sleeved outside the cylindrical mould sleeve flange, and a gap is reserved between the inner wall of the mould correcting ring and the outer wall of the mould sleeve flange; a plurality of axisymmetric screw holes penetrate through the side wall of the die correcting ring, and a correcting screw is screwed in each screw hole; the distance between each calibration screw and the axis of the die correction ring is adjusted to drive the die sleeve flange, so that the degree of deviation of the axis of the die sleeve flange from the axis of the die correction ring is adjusted;
4) designing an adjustment-free mechanism:
the design principle is as follows: the inner ring and the outer ring are fixed in a structural form of closely fitting and matching the inner ring and the outer ring, and then the circle centers of the inner ring and the outer ring are overlapped;
the structure is realized as follows: a cylindrical mould correcting ring is sleeved outside the cylindrical mould sleeve flange, and the inner wall of the mould correcting ring is closely attached to the outer wall of the mould sleeve flange; the adjustment is avoided by fixing the relative positions of the die sleeve flange/the die correction ring and the die core;
5) the design exempts from the switching mechanism of adjustment mechanism and radial fine-tuning:
the design principle is as follows: respectively reducing the outer diameter of part of the inner ring and enlarging the inner diameter of the part of the outer ring in a close fit structure form of the inner ring and the outer ring; the enlarged portion of the outer ring is sufficient to receive the unreduced portion of the inner ring;
rotating the outer ring to make the unchanged parts of the inner ring and the outer ring closely attached to each other, so that the circle centers of the inner ring and the outer ring are superposed in the state;
rotating the outer ring to make the non-reduced part of the inner ring correspond to the enlarged part of the outer ring, so that the inner ring is not limited by the outer ring in the state and the position of the inner ring is adjustable;
the structure is realized as follows: the outer diameter of the die sleeve flange is smaller than the outer diameter of the die correction ring;
the inner wall of the mould correcting ring is provided with a plurality of axisymmetric inner bosses facing to the axis of the mould correcting ring,
the outer wall of the die sleeve flange is provided with a plurality of axisymmetric outer bosses back to the axis of the die sleeve flange;
the cylindrical surface where the top surface of each inner boss is located and the cylindrical surface where the bottom surface of each outer boss is located are the same cylindrical surface;
a plurality of screw holes are formed in the side wall of the mold correction ring, and mold correction screws are screwed in the screw holes; each screw hole is symmetrical around the axis of the die correcting ring and is positioned between two adjacent inner bosses; the space between two adjacent inner bosses is enough to accommodate one outer boss;
6) the switching between the adjustment-free mechanism and the radial fine adjustment mechanism is as follows:
the design principle of the step 5) is illustrated:
rotating the mold correcting ring to make the inner boss and the outer boss correspond in position, and fitting the top surface and the bottom surface of the inner boss and the outer boss to form an adjusting-free mechanism;
and rotating the mold correcting ring to enable the position of the outer boss to correspond to the space position between the two inner bosses, and forming a radial fine adjustment mechanism.
In the step 5), the pattern surrounded by the outer edge of the inner ring and the pattern surrounded by the inner edge of the outer ring are similar patterns.
Referring to fig. 1-7, the cable extruder head capable of switching the mode of die calibration, which is adapted to the method, comprises: the device comprises a shell 16, a connecting flange 21, a glue guide 17, a mold core 24, a mold sleeve 2, a mold sleeve combining cap 11 and a mold sleeve flange 1;
a cavity penetrating through the front and the rear is formed in the shell 1;
a through hole is arranged on the side wall of the shell to be used as a side wall fluid channel 35; the connecting flange 21 is connected to the side wall of the shell, the flange fluid channel 25 connected to the hollow position of the flange is communicated with the side wall fluid channel 35, and the side wall fluid channel is communicated with the cavity in the shell;
the glue guide 17 extends into the shell 1 from the rear part of the cavity in the shell and guides the glue17The outer wall of the cavity is closely attached to the inner wall of the cavity; the outer wall of the glue guide is provided with a groove 36, and the groove and the inner wall of the cavity enclose a fluid channel 26 of the glue guide; one end of the fluid channel of the glue guide device is communicated with the fluid channel of the side wall;
the mold core 24 is connected with the front end of the glue guide 17 and extends out of the cavity of the shell from inside to outside; the front end of the glue guide device 17 is provided with a tubular hollow part, and the rear end of the mold core extends into the hollow part and is connected with the hollow part;
the die sleeve 2 is arranged at the rear part in the hollow of the cylindrical die sleeve flange 1, the die sleeve combining cap 11 is arranged at the front part in the hollow of the die sleeve flange 1, and the die sleeve is fastened in the hollow of the die sleeve flange by the die sleeve combining cap; the die sleeve flange is connected with the shell, and the die sleeve flange and the outer wall of the front end of the glue guide device enclose a die sleeve flange fluid channel 27; the die sleeve is sleeved outside the die core, and the die sleeve and the die core enclose a die sleeve fluid channel 28; two ends of the die sleeve flange fluid channel are respectively communicated with the glue guide device fluid channel and the die sleeve fluid channel;
a wiring channel 29 of the cable extruder head penetrates through the glue guide, the mold core, the mold sleeve and the mold sleeve nut; the axis of the wiring channel is superposed on the straight line l.
The extruder head also comprises a cylindrical die correction ring 3; the die correction ring and the die sleeve flange form a die correction mechanism;
the axis d of the die sleeve flange 1 is parallel to or coincided with the straight line l, and the inner wall of the die sleeve flange 1 is provided with a die sleeve connecting mechanism and a die sleeve cap combining connecting mechanism; the die sleeve flange 1 is provided with a machine head connecting structure for connecting an extrusion machine head, and the machine head connecting structure is provided with a radial fine adjustment space;
the axis of the die correcting ring 3 is coincided with a straight line l, and the rear part of the die correcting ring is provided with a limiting mechanism for radially limiting the die correcting ring on an extruder head;
the inner diameter of the die correcting ring corresponds to the outer diameter of the die sleeve flange; the die sleeve flange penetrates through the hollow part of the die correction ring from front to back; the relative positions of the die correcting ring and the die sleeve flange are circumferentially adjustable;
the inner wall of the die correction ring is provided with a plurality of inner bosses 4 facing the straight line l, and the outer wall of the die sleeve flange is provided with a plurality of outer bosses 5 facing away from the axis d;
each inner boss 4 is symmetrical around the straight line l, and the cylindrical surface where the top surface of each inner boss is located is a surface a; each outer boss 5 is symmetrical around an axis d, and the cylindrical surface where the bottom surface of each outer boss is also a surface a;
a plurality of screw holes 6 are formed in the side wall of the mold correction ring, and mold correction screws 7 are screwed in the screw holes; each screw hole is symmetrical around the straight line l and is positioned between two adjacent inner bosses; the space between two adjacent inner bosses is enough to accommodate one outer boss.
In the present example, the number of the first and second,
an annular indent 31 is arranged on the rear end face of the shell 16, and a plurality of counter bores 32 for placing heaters (electric heating rods) are uniformly distributed in the annular indent; a mounting groove 33 for placing a heater controller is reserved on the side surface of the annular indent, and the mounting groove is exposed out of the side wall of the shell;
the side wall of the rear part of the glue guide device 17 is connected with a limiting boss (a limiting screw 20 is screwed on the limiting boss), the side wall of the inner cavity of the shell is provided with an inner recess 34 corresponding to the limiting boss, and the limiting boss is arranged in the inner recess.
A die sleeve flange heater 23 is wrapped outside the outer wall of the die sleeve flange 1; a temperature measuring hole 22 for installing a temperature sensor is formed on the die sleeve flange 1; the connecting flange 21 is provided with a temperature measuring hole 22 for mounting a temperature sensor.
On the radial section, the graph formed by the inner wall of the mould correcting ring and the graph formed by the inner wall of the mould sleeve flange are similar graphs. The distance between the surface a and the bottom of the position between two adjacent inner bosses is 1-5 mm; the distance between the surface a and the top of the position between two adjacent outer bosses is 1-5 mm.
The rear end face of the die correction ring is connected with an annular step 8, the axis of the annular step is coincident with a straight line l, and the inner diameter of the annular step is larger than that of the die correction ring; the annular step forms a limiting mechanism which is radially limited on the extruder head.
The outer diameter of a cake-shaped flange seat 15 used for connecting a die sleeve flange on a shell 16 of the extruder head is the same as the inner diameter of the annular step 8, and the die correcting ring is sleeved outside the flange seat through the annular step and is tightly matched with the flange seat.
Referring to fig. 2 to 5, the handpiece connecting structures have a plurality of groups which are symmetrical around an axis d, and each group of handpiece connecting structures comprises a through hole 9 and a connecting screw 10 in the through hole; the inner diameter of the front part of the through hole is larger than the outer diameter of the main body of the connecting screw, and the inner diameter of the rear part of the through hole is larger than the outer diameter of the screw head of the connecting screw; the clearance between through-hole and the connecting screw constitutes radial fine setting space. The connecting screw is connected to a flange seat 15 on a shell 16 of the extruder head through the through hole.
The hollow part of the die sleeve flange 1 is divided into a front section and a rear section; the rear section of the die sleeve flange is hollow and is in a circular truncated cone shape corresponding to the shape of the die sleeve 2, and the small bottom of the circular truncated cone faces the rear part of the die sleeve flange; the front section of the die sleeve flange is hollow and is in a cylindrical shape, and the inner wall of the front section of the die sleeve flange, which is hollow, is provided with an internal thread corresponding to the external thread of the die sleeve nut 11.
Referring to fig. 2, the outer wall of the die sleeve flange is connected with an annular convex 12, and the distance between the rear end surface of the annular convex and the rear end surface of the die sleeve flange is not more than the distance between the front end surface and the rear end surface of the die correction ring.
Referring to fig. 1 and 2, the collation ring 3 is sandwiched between the die case flange 1 and the flange seat 15 on the extruder head housing.
For convenient use, a handle 13 is connected to the outer wall of the die calibration ring; the front end face of the die correction ring and the outer wall of the die sleeve flange are provided with corresponding alignment marks 14.
During machining, the die correction ring and the annular step on the die correction ring are of an integral structure and can be machined from an annular blank by a machine tool. Similarly, the die case flange and the annular protrusion thereon are of unitary construction and can be machined from an annular blank by a machine tool.
The glue guide device is provided with a plurality of pairs of adjusting screws 18 and adjusting nuts 19 for adjusting the size of a gap between the front end face of the rear seat of the glue guide device and the rear end face of the shell. The glue guide device is connected with the shell through a connecting screw 10.
The die calibration ring 2 can rotate through the handle, and the die calibration ring and the die sleeve flange can rotate through the die calibration ring so as to change the assembling matching form. The die case and cap 11 serves to define the die case 2.
Referring to fig. 2, the die case 2 is mounted within the die case flange, enclosing a through die case fluid passageway 28. During production, fluid enters the glue guide fluid channel 26 from the flange fluid channel 25, then passes through the die sleeve flange fluid channel 27, then passes through the die sleeve fluid channel 28, and finally is extruded out coated on the central conductor.
A1-5 mm gap 30 between the die sleeve flange 1 and the die correction ring 3 can change the center position of the die sleeve flange by adjusting the die correction screw 7, so that the fine adjustment of the concentricity between the machine head die sleeve/the die core is realized.
After the die correction ring 1 rotates for a certain position through the handle 13, the inner boss 4 of the die correction ring 3 is contacted with the outer boss 5 of the die sleeve flange 1, so that the die sleeve flange 1 is automatically centered to realize the adjustment-free function of the machine head.
In light of the foregoing description of the preferred embodiments of the invention, it is to be understood that numerous changes and modifications may be made without departing from the spirit and scope of the invention. The technical scope of the invention is not limited to the contents of the specification, and must be determined according to the scope of the claims.
Claims (10)
1. A mould calibration method of a cable extruder head is characterized in that the radial relative position of a mould core and a mould sleeve is adjusted until the axes of the mould core and the mould sleeve are collinear; the method for adjusting the radial relative position of the mold core and the mold sleeve comprises a fixed type and a fine adjustment type, and is characterized in that a set of adjusting mechanism is designed, and the adjustment-free and radial fine adjustment can be used on the same set of adjusting mechanism in a switchable manner; the design method comprises the following steps:
1) selecting a radial fine adjustment object as a mold core or a mold sleeve:
because the mold core is connected with the axial position of the extruder head, the structural interference generated by the change of the radial position of the mold core comprises a extruder head shell, a glue guide device and a glue running channel;
the die sleeve is connected in the shell of the extruder head through a die sleeve flange, and the structural interference of the radial position of the die sleeve is limited to the die sleeve flange;
selecting a matched die sleeve to carry out radial fine adjustment;
2) selecting the position of the die sleeve radial fine adjustment mechanism:
the die sleeve is a high-precision part, and the structure of the die sleeve is fixed; the die sleeve and the die sleeve flange are relatively fixed, and the radial fine adjustment of the die sleeve is realized through the radial fine adjustment of the die sleeve flange, so that the radial relative position of the die core and the die sleeve is adjusted;
3) designing a radial fine adjustment mechanism:
the design principle is as follows: the inner ring and the outer ring are in clearance fit with each other, and the deviation degree of the circle centers of the inner ring and the outer ring is adjusted in a mode of adjusting the proximity degree of the outer edge of the inner ring and the inner edge of the outer ring;
the structure is realized as follows: a cylindrical mould correcting ring is sleeved outside the cylindrical mould sleeve flange, and a gap is reserved between the inner wall of the mould correcting ring and the outer wall of the mould sleeve flange; a plurality of axisymmetric screw holes penetrate through the side wall of the die correcting ring, and a correcting screw is screwed in each screw hole; the distance between each calibration screw and the axis of the die correction ring is adjusted to drive the die sleeve flange, so that the degree of deviation of the axis of the die sleeve flange from the axis of the die correction ring is adjusted;
4) designing an adjustment-free mechanism:
the design principle is as follows: the inner ring and the outer ring are fixed in a structural form of closely fitting and matching the inner ring and the outer ring, and then the circle centers of the inner ring and the outer ring are overlapped;
the structure is realized as follows: a cylindrical mould correcting ring is sleeved outside the cylindrical mould sleeve flange, and the inner wall of the mould correcting ring is closely attached to the outer wall of the mould sleeve flange; the adjustment is avoided by fixing the relative positions of the die sleeve flange/the die correction ring and the die core;
5) the design exempts from the switching mechanism of adjustment mechanism and radial fine-tuning:
the design principle is as follows: respectively reducing the outer diameter of part of the inner ring and enlarging the inner diameter of the part of the outer ring in a close fit structure form of the inner ring and the outer ring; the enlarged portion of the outer ring is sufficient to receive the unreduced portion of the inner ring;
rotating the outer ring to make the unchanged parts of the inner ring and the outer ring closely attached to each other, so that the circle centers of the inner ring and the outer ring are superposed in the state;
rotating the outer ring to make the non-reduced part of the inner ring correspond to the enlarged part of the outer ring, so that the inner ring is not limited by the outer ring in the state and the position of the inner ring is adjustable;
the structure is realized as follows: the outer diameter of the die sleeve flange is smaller than the outer diameter of the die correction ring;
the inner wall of the mould correcting ring is provided with a plurality of axisymmetric inner bosses facing to the axis of the mould correcting ring,
the outer wall of the die sleeve flange is provided with a plurality of axisymmetric outer bosses back to the axis of the die sleeve flange;
the cylindrical surface where the top surface of each inner boss is located and the cylindrical surface where the bottom surface of each outer boss is located are the same cylindrical surface;
a plurality of screw holes are formed in the side wall of the mold correction ring, and mold correction screws are screwed in the screw holes; each screw hole is symmetrical around the axis of the die correcting ring and is positioned between two adjacent inner bosses; the space between two adjacent inner bosses is enough to accommodate one outer boss;
6) the switching between the adjustment-free mechanism and the radial fine adjustment mechanism is as follows:
the design principle of the step 5) is illustrated:
rotating the mold correcting ring to make the inner boss and the outer boss correspond in position, and fitting the top surface and the bottom surface of the inner boss and the outer boss to form an adjusting-free mechanism;
and rotating the mold correcting ring to enable the position of the outer boss to correspond to the space position between the two inner bosses, and forming a radial fine adjustment mechanism.
2. The method of claim 1, wherein in step 5), the pattern defined by the outer edge of the inner ring and the pattern defined by the inner edge of the outer ring are similar patterns.
3. The method of calibrating a cable extruder head of claim 1, wherein said cable extruder head comprises: the device comprises a shell, a connecting flange, a glue guide device, a mold core, a mold sleeve combining cap and a mold sleeve flange;
a cavity penetrating through the front and the rear parts is formed in the shell;
the side wall of the shell is provided with a through hole as a side wall fluid channel; the connecting flange is connected to the side wall of the shell, a flange fluid channel connected to the hollow position of the flange is communicated with the side wall fluid channel, and the side wall fluid channel is communicated with the cavity in the shell;
the glue guide device extends into the shell from the rear part of the cavity in the shell, and the outer wall of the glue guide device is closely attached to the inner wall of the cavity; the outer wall of the glue guide is provided with a groove, and the groove and the inner wall of the cavity enclose a fluid channel of the glue guide; one end of the fluid channel of the glue guide device is communicated with the fluid channel of the side wall;
the mold core is connected with the front end of the glue guide device and extends out of the cavity of the shell from inside to outside;
the die sleeve is sleeved at the rear part of the hollow of the cylindrical die sleeve flange, the die sleeve is capped at the front part of the hollow of the die sleeve flange, and the die sleeve is fastened in the hollow of the die sleeve flange by the die sleeve and the cap; the die sleeve flange is connected with the shell, and a die sleeve flange fluid channel is enclosed by the die sleeve flange and the outer wall of the front end of the glue guide device; the die sleeve is sleeved outside the die core, and the die sleeve and the die core enclose a die sleeve fluid channel; two ends of the die sleeve flange fluid channel are respectively communicated with the glue guide device fluid channel and the die sleeve fluid channel;
the wiring channel of the cable extruder head penetrates through the glue guide device, the mold core, the mold sleeve and the mold sleeve nut; the axis of the wiring channel is overlapped with the straight line l, and the device is characterized by also comprising a cylindrical mould correcting ring; the die correction ring and the die sleeve flange form a die correction mechanism;
the axis d of the die sleeve flange is parallel to or coincided with the straight line l, and the inner wall of the die sleeve flange is provided with a die sleeve connecting mechanism and a die sleeve cap combining connecting mechanism; the die sleeve flange is provided with a machine head connecting structure for connecting an extrusion machine head, and the machine head connecting structure is provided with a radial fine adjustment space;
the axis of the die correcting ring is superposed on the straight line l, and the rear part of the die correcting ring is provided with a limiting mechanism for radially limiting the die correcting ring on the extruder head;
the inner diameter of the die correcting ring corresponds to the outer diameter of the die sleeve flange; the die sleeve flange penetrates through the hollow part of the die correction ring from front to back; the relative positions of the die correcting ring and the die sleeve flange are circumferentially adjustable;
the inner wall of the die correction ring is provided with a plurality of inner bosses facing the straight line l, and the outer wall of the die sleeve flange is provided with a plurality of outer bosses facing away from the axis d;
each inner boss is symmetrical around the straight line l, and the cylindrical surface where the top surface of each inner boss is located is a surface a; each outer boss is symmetrical around an axis d, and the cylindrical surface where the bottom surface of each outer boss is located is also a surface a;
a plurality of screw holes are formed in the side wall of the mold correction ring, and mold correction screws are screwed in the screw holes; each screw hole is symmetrical around the straight line l and is positioned between two adjacent inner bosses; the space between two adjacent inner bosses is enough to accommodate one outer boss.
4. The method for calibrating a cable extruder head according to claim 3, wherein the rear end face of the calibration ring is connected with an annular step, the axis of the annular step coincides with a straight line l, and the inner diameter of the annular step is larger than that of the calibration ring; the annular step forms a limiting mechanism which is radially limited on the extruder head.
5. The method of claim 3, wherein the die-checking structure comprises a plurality of sets of die-connecting structures symmetrical about the axis d, each set of die-connecting structures including a through hole and a connecting screw in the through hole; the inner diameter of the front part of the through hole is larger than the outer diameter of the main body of the connecting screw, and the inner diameter of the rear part of the through hole is larger than the outer diameter of the screw head of the connecting screw; the clearance between through-hole and the connecting screw constitutes radial fine setting space.
6. The method for calibrating a cable extruder head of claim 3, wherein the outer wall of the die sleeve flange is connected with an annular protrusion, and the distance between the rear end surface of the annular protrusion and the rear end surface of the die sleeve flange is not greater than the distance between the front end surface and the rear end surface of the calibration ring.
7. The method for calibrating a die for a cable extruder head according to claim 3, wherein the distance between the surface a and the bottom of the position between two adjacent inner bosses is 1-5 mm; the distance between the surface a and the top of the position between two adjacent outer bosses is 1-5 mm.
8. A method of calibrating a cable extruder head as set forth in claim 3, wherein the pattern defined by the inner wall of the calibration ring is similar to the pattern defined by the inner wall of the die sleeve flange in the radial cross section.
9. The die calibration method for the cable extruder head according to claim 3, wherein the rear end face of the housing is provided with an annular indent, and a plurality of counter bores for accommodating the heater are uniformly distributed in the annular indent; a mounting groove for placing a heater controller is reserved on the side surface of the annular indent, and the mounting groove is exposed out of the side wall of the shell;
the side wall of the rear part of the glue guide device is connected with a limiting boss, the side wall of the inner cavity of the shell is provided with an inner recess corresponding to the limiting boss, and the limiting boss is arranged in the inner recess.
10. The method of claim 3, wherein a die sleeve flange heater is wrapped around the outer wall of the die sleeve flange; a temperature measuring hole for mounting a temperature sensor is formed in the die sleeve flange; the connecting flange is provided with a temperature measuring hole for mounting a temperature sensor.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020171163A1 (en) * | 2001-05-18 | 2002-11-21 | Barsby James B. | Apparatus and methods for mixing and injecting a foam core within an extruded shell |
| KR20060103294A (en) * | 2005-03-25 | 2006-09-28 | 차봉열 | A tapying machine |
| CN105044868A (en) * | 2015-08-31 | 2015-11-11 | 沈阳亨通光通信有限公司 | Optical cable preparation device |
| CN105269786A (en) * | 2015-11-15 | 2016-01-27 | 金杯电工衡阳电缆有限公司 | High-extrusion-force double-layer-co-extrusion double-color-wire machine head |
| CN205003331U (en) * | 2015-08-31 | 2016-01-27 | 沈阳亨通光通信有限公司 | Optic fibre plastic shield prebalelling guiding device |
| CN209880273U (en) * | 2019-07-30 | 2019-12-31 | 河北宁星电气科技有限公司 | Double-layer co-extrusion machine head for cable processing |
-
2021
- 2021-10-25 CN CN202111238474.6A patent/CN113977911B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020171163A1 (en) * | 2001-05-18 | 2002-11-21 | Barsby James B. | Apparatus and methods for mixing and injecting a foam core within an extruded shell |
| KR20060103294A (en) * | 2005-03-25 | 2006-09-28 | 차봉열 | A tapying machine |
| CN105044868A (en) * | 2015-08-31 | 2015-11-11 | 沈阳亨通光通信有限公司 | Optical cable preparation device |
| CN205003331U (en) * | 2015-08-31 | 2016-01-27 | 沈阳亨通光通信有限公司 | Optic fibre plastic shield prebalelling guiding device |
| CN105269786A (en) * | 2015-11-15 | 2016-01-27 | 金杯电工衡阳电缆有限公司 | High-extrusion-force double-layer-co-extrusion double-color-wire machine head |
| CN209880273U (en) * | 2019-07-30 | 2019-12-31 | 河北宁星电气科技有限公司 | Double-layer co-extrusion machine head for cable processing |
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