CN114669691A - Core structure of electric melting bent pipe and winding method of core structure - Google Patents
Core structure of electric melting bent pipe and winding method of core structure Download PDFInfo
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- CN114669691A CN114669691A CN202210331866.5A CN202210331866A CN114669691A CN 114669691 A CN114669691 A CN 114669691A CN 202210331866 A CN202210331866 A CN 202210331866A CN 114669691 A CN114669691 A CN 114669691A
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- 238000004804 winding Methods 0.000 title claims abstract description 140
- 238000002844 melting Methods 0.000 title claims abstract description 26
- 230000008018 melting Effects 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000005267 amalgamation Methods 0.000 claims description 25
- 210000001503 joint Anatomy 0.000 claims description 9
- 238000003723 Smelting Methods 0.000 claims description 6
- 238000007731 hot pressing Methods 0.000 claims description 3
- 238000010409 ironing Methods 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims 3
- 230000037431 insertion Effects 0.000 claims 3
- 238000010030 laminating Methods 0.000 claims 1
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 9
- 230000007704 transition Effects 0.000 description 8
- 238000007493 shaping process Methods 0.000 description 7
- 238000000465 moulding Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F3/00—Coiling wire into particular forms
- B21F3/02—Coiling wire into particular forms helically
- B21F3/04—Coiling wire into particular forms helically externally on a mandrel or the like
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C17/00—Apparatus or processes specially adapted for manufacturing resistors
- H01C17/04—Apparatus or processes specially adapted for manufacturing resistors adapted for winding the resistive element
Abstract
The invention provides a core structure of an electric melting bent pipe and a winding method of the core structure, and belongs to the technical field of electric melting pipe fitting molds. The technical problem that the winding quality of a core structure of an existing electric melting bent pipe is not enough is solved. The mold core structure of the electric melting bent pipe comprises a male mold core and a female mold core which can be spliced in an intersecting manner, wherein a splicing end of the male mold core is provided with a first splicing inclined plane, a positioning pin arranged in the axial direction of the male mold core is arranged on the first splicing inclined plane, a second splicing inclined plane and a first positioning blind hole are arranged at a splicing end of the female mold core, the male mold core and the female mold core can form a bent pipe mold core when the positioning pin is inserted into the first positioning blind hole and the first splicing inclined plane and the second splicing inclined plane are attached, the electric melting bent pipe mold core structure is characterized in that the splicing end of the female mold core also is provided with a second positioning blind hole arranged in the axial direction of the female mold core, and when the male mold core and the female mold core are coaxially abutted, the male mold core can be inserted into the second positioning blind hole and the first splicing inclined plane and the second splicing inclined plane are attached. The invention is beneficial to ensuring the winding quality of the elbow core.
Description
Technical Field
The invention belongs to the technical field of electric melting pipe fitting molds, and relates to a core structure of an electric melting bent pipe and a winding method of the core structure.
Background
An electric melting pipe fitting is a plastic pipe fitting for connecting pipes in a hot melting way. The electric melting pipe fitting mainly comprises a plastic pipe body, a resistance wire arranged on the inner wall of the pipe body and an electrode used for electrifying the resistance wire, the welding principle is that the resistance wire is electrified to generate heat so that the pipe fitting and a plastic material of a connecting pipe are melted, and the pipe fitting is welded after the pipe fitting and the plastic material are connected. The production of the electric melting pipe fittings depends on a mold core and a mold, and the winding and wiring of the resistance wires are also considered, and compared with the traditional straight pipe heads, the electric melting bent pipe has higher difficulty in wiring.
The application publication number is CN 110056732A's chinese patent discloses a full-automatic electric fuse pipe fitting wiring arrangement, comprising a base plate, set up a pair of power knock pin module that sets up in opposite directions on the bottom plate, fix this pair of mold core module that sets up in opposite directions between the power knock pin module that sets up in opposite directions, the wire winding that sets up on the bottom plate removes the module, and set up this pair of wire stripping module to the mold core module one side that sets up in opposite directions, treat that winding enameled wire removes the even winding of module on the mold core module through the wire winding, and peel off the insulating layer at enameled wire end by the wire stripping module.
Above-mentioned structure can realize the wire winding and the wiring of right angle electric smelting return bend, nevertheless still realizes through the independent wire winding of public mould core and female mould core respectively during its wire winding, is difficult to guarantee unified stable wire winding quality. In order to ensure that fluid in the bent pipe is smooth and tight in splicing, the structure of the mold core is the same as that of the mold core, the peripheries of the joint area of the male mold core and the female mold core are subjected to fillet cutting and have sharp edges, and the sharp edges of the male mold core and the female mold core which are spliced in a non-intersecting mode can cause damage to resistance wires wound to the area, so that the winding quality is influenced.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a core structure of an electric melting bent pipe, and the technical problems to be solved by the invention are as follows: how to improve the winding quality of the electric melting bent pipe.
The purpose of the invention can be realized by the following technical scheme:
the utility model provides a core structure of electric smelting return bend, includes can intersect amalgamation public mold core and master model core, the amalgamation end of public mold core has amalgamation inclined plane one, the locating pin that has along public mold core axial arrangement on the amalgamation inclined plane one, the amalgamation end of master model core has amalgamation inclined plane two and location blind hole one, when the locating pin inserts to be located in location blind hole one and make this public mold core and master model core can form the return bend core when amalgamation inclined plane one and amalgamation inclined plane two laminate, its characterized in that, the amalgamation end of master model core still has along this master model core axial arrangement location blind hole two, when public mold core and master model core coaxial butt joint the locating pin can insert to be located in location blind hole two and make amalgamation inclined plane one laminate with amalgamation inclined plane two.
The male mold core and the female mold core can be spliced in an intersecting manner to form a bent pipe mold core, bent pipe injection molding can be realized by matching the bent pipe mold core with the mold, at the moment, the first splicing inclined plane and the second splicing inclined plane are attached and aligned to enable the outer peripheral surfaces of the male mold core and the female mold core to be in smooth transition so as to ensure the quality of a pipe fitting, the positioning pin on the first splicing inclined plane is in inserting fit with the first positioning blind hole at the splicing end of the female mold core, the setting direction of the first positioning blind hole is intersected with the axis of the female mold core and related to the angle of a bent pipe to be formed, and the female mold core and the male mold core cannot be separated from each other along the axial direction of the female mold core after being spliced. The second positioning blind hole arranged along the axial direction of the female mold core is formed in the splicing end of the female mold core, so that when the male mold core and the female mold core are coaxially butted, the positioning pin can be inserted into the second positioning blind hole, and the first splicing inclined plane and the second splicing inclined plane are also attached, and when the male mold core and the female mold core are wound in such a state, the winding device is favorable for finishing the winding operation at one time, and the winding density of the male mold core and the winding density of the female mold core are ensured to be uniform; meanwhile, the joint ends of the male die core and the female die core are matched with the positioning blind holes through the limiting pins to form limiting along the radial direction, so that the male die core and the female die core can still be ensured to stably and coaxially rotate under the traction force of the resistance wire in the winding process, and the winding effect is prevented from being influenced by large-deflection swing; and the first splicing inclined plane and the second splicing inclined plane are attached, so that a smooth transition area exists at the joint of the edges of the first splicing inclined plane and the second splicing inclined plane, the resistance wire passing through the joint can not be cut by the sharp edge at the edge of the first splicing inclined plane or the edge of the second splicing inclined plane, and the winding quality is ensured.
In the core structure of the electric melting elbow, the first splicing inclined plane is provided with a limiting lug, the positioning pin is positioned on the limiting lug, the second splicing inclined plane is provided with a limiting groove, the first positioning blind hole and the second positioning blind hole are both positioned on the inner side wall of the limiting groove, and when the male mold core and the female mold core are in coaxial butt joint, the limiting lug is inserted into the limiting groove and is in positioning fit along the circumferential direction of the male mold core. Therefore, the limiting lug is matched with the limiting groove to limit the relative rotation of the male mold core and the female mold core in the winding process, and the phenomenon that the male mold core and the female mold core axially jump when the two ends of the male mold core and the female mold core are not firmly positioned is avoided, so that the winding effect is influenced.
In the core structure of above-mentioned electric smelting return bend, public mould core includes that the axial arranges in proper order wire winding section one and one, amalgamation inclined plane one is located one of shaping section, female mould core includes that the axial arranges in proper order wire winding section two and shaping section two, amalgamation inclined plane two is located shaping section two is last, the radial dimension of shaping section one is less than the radial dimension of wire winding section one, and forms annular step face one between shaping section one and the wire winding section one, the radial dimension of shaping section two is less than the radial dimension of wire winding section two, and forms annular step face two between shaping section two and the wire winding section two. The winding section I and the winding section II are high-density winding areas of the resistance wire, the forming section I and the forming section II mainly participate in forming of the inner cavity of the pipe fitting, different radial sizes are correspondingly arranged to be beneficial to distinguishing and judging winding modes of different areas, and the winding effect is guaranteed.
In the core structure of the electric melting bent pipe, a first inserting groove is formed in the first annular step surface and arranged along the length direction of a first winding section, the position of the first inserting groove is opposite to the position, closest to the first annular step surface, of the first splicing inclined surface, and a first wire clamping pin is inserted into the first inserting groove; the second annular step surface is provided with a second slot arranged along the length direction of the second winding section, the position of the second slot is opposite to the position of the second splicing inclined plane, which is closest to the second annular step surface, and a second wire clamping pin is inserted into the second slot. The resistance wire on the first forming section and the second forming section is designed to start to be wound from the position corresponding to the first slot or the second slot, the winding direction of the resistance wire can be matched with the extending direction of the edge of the first splicing inclined plane or the second splicing inclined plane to the maximum extent at the moment, the probability of contact of the resistance wire and the sharp edge is reduced, the winding quality is improved, the first wire clamping pin and the second wire clamping pin which are installed afterwards can ensure that the resistance wire on the first winding section and the second winding section cannot be loosened during splicing adjustment, and the winding quality of a product is ensured.
In the core structure of the electric melting bent pipe, the first molding section and the winding section are coaxially arranged, and the second molding section and the winding section are coaxially arranged. The coaxiality of the male die core and the female die core after coaxial butt joint is guaranteed, unbalance loading and position deviation in the rotating process are reduced, and the winding effect is guaranteed.
In the core structure of the electric melting bent pipe, the end edge of the positioning pin, the edge of the limiting lug and the open edge of the limiting groove are all subjected to fillet transition treatment. Therefore, the smooth operation and convenience in butting and splicing the male mold core and the female mold core can be improved.
A winding method of an electric melting elbow pipe core structure comprises the following steps:
the first step of coaxially butting the male mold core and the female mold core, inserting the positioning pin into the second positioning blind hole and attaching the first splicing inclined plane to the second splicing inclined plane;
and step two, placing the coaxially butted male mold core and female mold core on a rotating device of winding equipment, and clamping the axial two ends of the male mold core and the female mold core.
Winding one end of the resistance wire onto the first winding section or the second winding section, controlling the male mold core and the female mold core to coaxially rotate, and simultaneously controlling a movable pay-off device of the winding equipment to axially move along the male mold core and the female mold core;
step four, when the resistance wire is wound to the area where the forming section I and the forming section II are located, the movement speed of the movable pay-off device is increased or the rotating speed of the rotating device is reduced;
step five, after the winding of the male mold core and the female mold core is finished, hot pressing is conducted on the resistance wires on the winding section I and the winding section II through the head ironing device;
inserting a wire clamping pin I and a wire clamping pin II into the slot I and the slot II respectively to clamp the resistance wire in the opposite areas, and taking out the male die core and the female die core;
and step seven, axially splitting the male mold core and the female mold core, rotating the male mold core or the female mold core in the opposite direction of winding of the resistance wire and swinging towards an intersecting state, and finally intersecting and splicing the male mold core and the female mold core.
Like this public mold core and female mould core axial butt joint in advance form the axial and the stable whole of circumference, once only accomplish the wire winding operation through the winding device, improve the uniformity of efficiency and wire winding quality, reduce wire winding density in the non-work area simultaneously to can guarantee the resistance line surplus when tearing open, make the amalgamation operation after the wire winding smooth and easy reliable.
In the winding method of the core structure of the electric melting bent pipe, in the fourth step, the winding cycle number of the resistance wire in the first forming section and the second forming section is 1.5 cycles, and the resistance wire is wound from the position, corresponding to the first slot, on the first forming section to the position, corresponding to the second slot, on the second forming section. Therefore, when the resistance wire passes through the joint of the first splicing inclined plane and the second splicing inclined plane, the resistance wire is just in a smooth transition area and cannot be influenced by sharp edges, and the winding quality is improved.
Compared with the prior art, the invention has the following advantages:
according to the core structure of the electric melting bent pipe, the second positioning blind hole arranged along the axial direction of the female mold core is formed in the splicing end of the female mold core, so that a positioning pin can be inserted into the second positioning blind hole when the male mold core and the female mold core are coaxially butted, and the first splicing inclined surface and the second splicing inclined surface are also attached, so that the winding device can complete winding operation at one time, and the uniform and consistent winding density of the male mold core and the female mold core is ensured; meanwhile, the winding effect is prevented from being influenced by large-deflection swing; and the resistance wire is favorably designed not to be cut by sharp edges at the first splicing inclined plane or the second splicing inclined plane, so that the winding quality is ensured.
Drawings
Fig. 1 is a schematic perspective view of a male core in the present embodiment.
Fig. 2 is a schematic perspective view of the female mold core in this embodiment.
Fig. 3 is a schematic perspective view of the core insert and the core insert of the present embodiment.
Fig. 4 is a schematic perspective view of the coaxial butt joint of the male mold core and the female mold core in the present embodiment.
Fig. 5 is a schematic cross-sectional view showing the coaxial mating of the male mold core and the female mold core in the present embodiment.
Fig. 6 is an enlarged view of a portion a in fig. 5.
In the figure, 1, a male mold core; 11. splicing the first inclined planes; 111. positioning pins; 112. a limiting bump; 12. winding a first wire section; 13. forming a first forming section; 14. a first annular step surface; 141. a first slot;
2. a female mold core; 21. a second splicing inclined plane; 211. positioning a first blind hole; 212. a second positioning blind hole; 213. a limiting groove; 22. a winding section II; 23. a molding section II; 24. a second annular step surface; 241. a second slot;
3. a first wire clamping pin; 4. and a second wire clamping pin.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
The first embodiment is as follows:
as shown in fig. 1-6, the mold core structure of the electric melting elbow comprises a male mold core 1 and a female mold core 2 which can be vertically spliced, wherein the splicing end of the male mold core 1 is provided with a splicing inclined surface I11, the included angle between the splicing inclined surface I11 and the axis of the male mold core 1 is 45 degrees, the splicing inclined surface I11 is provided with a positioning pin 111 which is arranged along the axial direction of the male mold core 1, the splicing end of the female mold core 2 is provided with a splicing inclined surface II 21 and a positioning blind hole I211, the arrangement direction of the positioning blind hole I211 is vertical to the axial direction of the female mold core 2, the included angle between the splicing inclined surface II 21 and the axis of the female mold core 2 is also 45 degrees, when the positioning pin 111 is inserted into the positioning blind hole I211 and the splicing inclined surface I11 and the splicing inclined surface II 21 are spliced, the male mold core 1 and the female mold core 2 can form an elbow mold core, the splicing end of the female mold core 2 is also provided with a positioning blind hole II 212 which is arranged along the axial direction of the female mold core 2, and when the male mold core 1 and the positioning pin 111 are butted with the positioning pin 2, and the splicing inclined surface I11, and the female mold core 2, and the positioning pin 111 can be inserted into the positioning pin and the positioning pin 2 coaxially And two 21 are bonded. The male mold core 1 and the female mold core 2 can be vertically spliced with each other to form a bent pipe mold core, bent pipe injection molding can be achieved by matching the bent pipe mold core with a mold, the outer peripheral surfaces of the male mold core 1 and the female mold core 2 can be in smooth transition to guarantee pipe quality by means of fitting alignment of the splicing inclined surface I11 and the splicing inclined surface II 21, the positioning pin 111 on the splicing inclined surface I11 is in inserting fit with the positioning blind hole I211 at the splicing end of the female mold core 2, and the female mold core 2 and the male mold core 1 are guaranteed not to be axially separated along the female mold core 2 after being spliced. The positioning blind hole II 212 axially arranged along the female mold core 2 is arranged at the splicing end of the female mold core 2, so that the positioning pin 111 can be inserted into the positioning blind hole II 212 and the splicing inclined plane I11 and the splicing inclined plane II 21 can be attached when the male mold core 1 and the female mold core 2 are coaxially butted, when the male mold core 1 and the female mold core 2 are wound in such a state, a winding device is facilitated to finish the winding operation at one time, and the uniform and consistent winding density of the male mold core 1 and the female mold core 2 is ensured; meanwhile, the joint ends of the male die core 1 and the female die core 2 are matched with the second positioning blind hole 212 through a limiting pin to form limiting along the radial direction, so that the male die core 1 and the female die core 2 can still ensure stable coaxial rotation under the traction force of a resistance wire in the winding process, and the winding effect is prevented from being influenced by large-deflection swing; and the first splicing inclined plane 11 and the second splicing inclined plane 21 are attached, so that a smooth transition area exists at the joint of the edges of the first splicing inclined plane 11 and the second splicing inclined plane 21, the resistance wire passing through the joint can be favorably designed without being cut by the sharp edge at the edge of the first splicing inclined plane 11 or the second splicing inclined plane 21, and the winding quality is ensured. Further, the first split inclined plane 11 is provided with a limiting bump 112 in a right-angled triangular prism shape, the positioning pin 111 is located on the limiting bump 112, the second split inclined plane 21 is provided with a limiting groove 213, the first positioning blind hole 211 and the second positioning blind hole 212 are both located on the inner side wall of the limiting groove 213, and when the male mold core 1 and the female mold core 2 are coaxially butted, the limiting bump 112 and the limiting groove 213 are in limiting fit along the circumferential direction of the male mold core 1. Therefore, the limiting lug 112 and the limiting groove 213 are matched to limit the relative rotation of the male mold core 1 and the female mold core 2 in the winding process, and the phenomenon that the two ends of the male mold core 1 and the female mold core 2 are axially jumped when being not firmly positioned is avoided, so that the winding effect is influenced. The end edge of the positioning pin 111, the edge of the limit bump 112 and the open edge of the limit groove 213 are all subjected to fillet transition treatment. Operation when can promote butt joint and the concatenation of public mold core 1 and female mold core 2 like this is smooth and easy down and the convenience.
As shown in fig. 1-6, the male mold core 1 includes a first winding section 12 and a first forming section 13 which are sequentially arranged in the axial direction, the first split inclined plane 11 is located on the first forming section 13, the female mold core 2 includes a second winding section 22 and a second forming section 23 which are sequentially arranged in the axial direction, the second split inclined plane 21 is located on the second forming section 23, the radial dimension of the first forming section 13 is smaller than the radial dimension of the first winding section 12, an annular step surface 14 is formed between the first forming section 13 and the first winding section 12, the radial dimension of the second forming section 23 is smaller than the radial dimension of the second winding section 22, and an annular step surface 24 is formed between the second forming section 23 and the second winding section 22. The first winding section 12 and the second winding section 22 are high-density winding areas of the resistance wire, and the first forming section 13 and the second forming section 23 mainly participate in forming of the inner cavity of the pipe fitting, so that different radial sizes are correspondingly arranged, winding modes in different areas can be distinguished and judged conveniently, and the winding effect is guaranteed. Specifically, the first annular step surface 14 is provided with a first slot 141 arranged along the length direction of the first winding section 12, the position of the first slot 141 is opposite to the position of the first splicing inclined surface 11, which is closest to the first annular step surface 14, and a first wire clamping pin 3 is inserted into the first slot 141; the second annular step surface 24 is provided with a second slot 241 arranged along the length direction of the second winding section 22, the position of the second slot 241 is opposite to the position of the second split inclined surface 21 closest to the second annular step surface 24, and a second wire clamping pin 4 is inserted into the second slot 241. The resistance wire on the first forming section 13 and the second forming section 23 is designed to start to be wound from the position corresponding to the first inserting groove 141 or the second inserting groove 241, the winding direction of the resistance wire can be matched with the extending direction of the edge of the first splicing inclined plane 11 or the second splicing inclined plane 21 to the greatest extent at the moment, the contact probability of the resistance wire and a sharp edge is reduced, the winding quality is improved, the wire clamping pin 3 and the wire clamping pin 4 which are arranged later can ensure that the resistance wire on the first winding section 12 and the second winding section 22 cannot be loosened during splicing adjustment, and the winding quality of a product is ensured. The first forming section 13 is arranged coaxially with the first winding section 12, and the second forming section 23 is arranged coaxially with the second winding section 22. Do benefit to like this and guarantee the axiality behind the coaxial butt joint of public mould core 1 and female mould core 2, reduce unbalance loading and the offset of rotating the in-process, guarantee the wire winding effect.
Example two:
the winding method of the electric melting elbow pipe core structure comprises the following steps:
step one, coaxially butting the male mold core 1 and the female mold core 2, inserting the positioning pin 111 into the second positioning blind hole 212 and attaching the first splicing inclined surface 11 to the second splicing inclined surface 21;
and step two, placing the coaxially butted male mold core 1 and female mold core 2 on a rotating device of winding equipment, and clamping the axial two ends of the male mold core 1 and the axial two ends of the female mold core 2.
Winding one end of the resistance wire onto the first winding section 12 or the second winding section 22, controlling the male mold core 1 and the female mold core 2 to coaxially rotate, and simultaneously controlling a movable pay-off device of the winding equipment to axially move along the male mold core 1 and the female mold core 2;
step four, when the resistance wire is wound to the area where the first forming section 13 and the second forming section 23 are located, the movement speed of the movable pay-off device is increased or the rotating speed of the rotating device is reduced, the winding number of the resistance wire in the area of the first forming section 13 and the area of the second forming section 23 is 1.5 weeks, and the resistance wire is wound from the position, opposite to the first slot 141, on the first forming section 13 to the position, opposite to the second slot 241, on the second forming section 23;
step five, after the winding of the male mold core 1 and the female mold core 2 is finished, hot pressing is conducted on the resistance wires on the winding section I12 and the winding section II 22 through the head ironing device;
sixthly, inserting a wire clamping pin I3 and a wire clamping pin II 4 into the slot I141 and the slot II 241 respectively to clamp the resistance wire in the opposite areas, and taking out the male die core 1 and the female die core 2;
and seventhly, axially splitting the male mold core 1 and the female mold core 2, rotating the male mold core 1 or the female mold core 2 along the opposite direction of winding of the resistance wire and swinging towards an intersecting state, and finally, intersecting and splicing the male mold core 1 and the female mold core 2.
Like this public mold core 1 and female mould core 2 axial butt joint in advance form the axial and the stable whole of circumference, once only accomplish the wire winding operation through the winding device, improve the uniformity of efficiency and wire winding quality, reduce wire winding density in the non-work area simultaneously to can guarantee the resistance line surplus when tearing open, make the amalgamation operation after the wire winding smooth and easy reliable. Therefore, when the resistance wire passes through the joint of the first splicing inclined plane 11 and the second splicing inclined plane 21, the resistance wire is just in a smooth transition area and cannot be influenced by sharp edges, and the winding quality is improved.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Claims (8)
1. The utility model provides a core structure of electric smelting return bend, includes can intersect amalgamation public mold core (1) and master model core (2), the amalgamation end of public mold core (1) has amalgamation inclined plane one (11), have on amalgamation inclined plane one (11) locating pin (111) of arranging along public mold core (1) axial, the amalgamation end of master model core (2) has amalgamation inclined plane two (21) and location blind hole one (211), when locating pin (111) are inserted and are located in location blind hole one (211) and make amalgamation inclined plane one (11) and amalgamation inclined plane two (21) laminating this public mold core (1) and master model core (2) can form the return bend core, its characterized in that, the amalgamation end of master model core (2) still has location blind hole two (212) of arranging along this master model core (2) axial, when public mold core (1) and master model core (2) coaxial butt joint the locating pin (111) can insert and locate in location two (212) and make the amalgamation inclined plane (11) And the second splicing inclined plane (21) is jointed.
2. The core structure of the electric smelting bent pipe according to claim 1, wherein the first split inclined plane (11) is provided with a limiting projection (112), the positioning pin (111) is located on the limiting projection (112), the second split inclined plane (21) is provided with a limiting groove (213), the first positioning blind hole (211) and the second positioning blind hole (212) are both located on the inner side wall of the limiting groove (213), and when the male mold core (1) and the female mold core (2) are coaxially butted, the limiting projection (112) and the limiting groove (213) are in limiting fit along the circumferential direction of the male mold core (1).
3. A core structure of an electrofusion elbow according to claim 1 or 2, characterised in that the core (1) comprises a first winding section (12) and a first forming section (13) arranged axially in sequence, the first splicing inclined plane (11) is positioned on the first forming section (13), the female mold core (2) comprises a second winding section (22) and a second forming section (23) which are sequentially arranged in the axial direction, the second split inclined plane (21) is positioned on the second forming section (23), the radial size of the first forming section (13) is smaller than that of the first winding section (12), and a first annular step surface (14) is formed between the first forming section (13) and the first winding section (12), the radial dimension of the second forming section (23) is smaller than that of the second winding section (22), and a second annular step surface (24) is formed between the second forming section (23) and the second winding section (22).
4. A core structure of an electric smelting elbow pipe according to claim 3, wherein the first annular step surface (14) is provided with a first insertion groove (141) arranged along the length direction of a first winding line segment (12), the position of the first insertion groove (141) is opposite to the position, closest to the first annular step surface (14), of the first splicing inclined surface (11), and a first wire clamping pin (3) is inserted into the first insertion groove (141); the second annular step surface (24) is provided with a second slot (241) which is arranged along the length direction of the second winding segment (22), the position of the second slot (241) is opposite to the position, closest to the second annular step surface (24), of the second splicing inclined surface (21), and a second wire clamping pin (4) is inserted into the second slot (241).
5. A mandrel structure for electrofusion elbows according to claim 3, wherein the first forming section (13) is arranged coaxially with the first winding section (12) and the second forming section (23) is arranged coaxially with the second winding section (22).
6. The core structure of the electrofusion elbow as recited in claim 2, wherein the end edges of the locating pins (111), the edges of the stopping projections (112) and the open edges of the stopping grooves (213) are all rounded.
7. A winding method of an electric melting elbow pipe core structure is characterized by comprising the following steps:
the method comprises the following steps that firstly, a male mold core (1) and a female mold core (2) are coaxially butted, a positioning pin (111) is inserted into a positioning blind hole II (212), and a splicing inclined plane I (11) is attached to a splicing inclined plane II (21);
and step two, placing the coaxially butted male mold core (1) and female mold core (2) on a rotating device of a winding device, and clamping the axial two ends of the male mold core (1) and the axial two ends of the female mold core (2).
Winding one end of the resistance wire onto the first winding section (12) or the second winding section (22), controlling the coaxial rotation of the male mold core (1) and the female mold core (2), and simultaneously controlling the axial movement of a movable pay-off device of the winding equipment along the male mold core (1) and the female mold core (2);
step four, when the resistance wire is wound to the area where the forming section I (13) and the forming section II (23) are located, the movement speed of the movable pay-off device is increased or the rotating speed of the rotating device is reduced;
fifthly, after the winding of the male mold core (1) and the female mold core (2) is finished, hot pressing is carried out on the resistance wires on the winding section I (12) and the winding section II (22) through the head ironing device;
sixthly, inserting a wire clamping pin I (3) and a wire clamping pin II (4) into the slot I (141) and the slot II (241) respectively to clamp the resistance wire in the opposite areas, and taking out the male die core (1) and the female die core (2);
and seventhly, axially splitting the male mold core (1) and the female mold core (2), rotating the male mold core (1) or the female mold core (2) in the opposite direction of winding of the resistance wire and swinging towards an intersecting state, and finally intersecting and splicing the male mold core (1) and the female mold core (2).
8. The method for winding the core structure of the electrofusion elbow according to claim 7, wherein the fourth step is characterized in that the number of winding cycles of the resistance wire in the area of the first forming segment (13) and the second forming segment (23) is 1.5, and the resistance wire is wound from the position of the first forming segment (13) opposite to the first slot (141) to the position of the second forming segment (23) opposite to the second slot (241).
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|---|---|---|---|---|
| JPH0727282A (en) * | 1993-07-15 | 1995-01-27 | Hitachi Metals Ltd | Electro-fusion joint and its forming method |
| JPH07323481A (en) * | 1994-06-02 | 1995-12-12 | Mitsui Petrochem Ind Ltd | Production of electrofusion joint and core for winding thereof |
| JPH1134110A (en) * | 1997-07-18 | 1999-02-09 | Mitsubishi Plastics Ind Ltd | Core for producing welding joint |
| CN103968176A (en) * | 2014-04-30 | 2014-08-06 | 永高股份有限公司 | Separating binding post for mold core locating of polyethylene electro-fusion pipe fitting |
| CN208571185U (en) * | 2018-08-24 | 2019-03-01 | 秦铁权 | A kind of rotatable data line of connector |
| CN210525679U (en) * | 2019-08-30 | 2020-05-15 | 永高股份有限公司 | Electric smelting pipe fitting wire winding core |
| CN211307447U (en) * | 2019-11-18 | 2020-08-21 | 江苏海威塑业科技有限公司 | Mold core device for producing plug-in elbow electric melting pipe fittings |
| CN214810009U (en) * | 2020-12-31 | 2021-11-23 | 厦门永平堂建筑材料有限公司 | Multifunctional stirrer |
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2022
- 2022-03-31 CN CN202210331866.5A patent/CN114669691A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0727282A (en) * | 1993-07-15 | 1995-01-27 | Hitachi Metals Ltd | Electro-fusion joint and its forming method |
| JPH07323481A (en) * | 1994-06-02 | 1995-12-12 | Mitsui Petrochem Ind Ltd | Production of electrofusion joint and core for winding thereof |
| JPH1134110A (en) * | 1997-07-18 | 1999-02-09 | Mitsubishi Plastics Ind Ltd | Core for producing welding joint |
| CN103968176A (en) * | 2014-04-30 | 2014-08-06 | 永高股份有限公司 | Separating binding post for mold core locating of polyethylene electro-fusion pipe fitting |
| CN208571185U (en) * | 2018-08-24 | 2019-03-01 | 秦铁权 | A kind of rotatable data line of connector |
| CN210525679U (en) * | 2019-08-30 | 2020-05-15 | 永高股份有限公司 | Electric smelting pipe fitting wire winding core |
| CN211307447U (en) * | 2019-11-18 | 2020-08-21 | 江苏海威塑业科技有限公司 | Mold core device for producing plug-in elbow electric melting pipe fittings |
| CN214810009U (en) * | 2020-12-31 | 2021-11-23 | 厦门永平堂建筑材料有限公司 | Multifunctional stirrer |
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