CN114126115B - Heater with sheath, processing device and processing technology - Google Patents
Heater with sheath, processing device and processing technology Download PDFInfo
- Publication number
- CN114126115B CN114126115B CN202111411509.1A CN202111411509A CN114126115B CN 114126115 B CN114126115 B CN 114126115B CN 202111411509 A CN202111411509 A CN 202111411509A CN 114126115 B CN114126115 B CN 114126115B
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- sheath
- heating pipe
- heating
- positioning
- heating coil
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- 238000012545 processing Methods 0.000 title claims abstract description 43
- 238000005516 engineering process Methods 0.000 title abstract description 10
- 238000010438 heat treatment Methods 0.000 claims abstract description 222
- 238000001125 extrusion Methods 0.000 claims abstract description 23
- 238000004804 winding Methods 0.000 claims abstract description 20
- 238000000034 method Methods 0.000 claims abstract description 13
- 230000002457 bidirectional effect Effects 0.000 claims description 35
- 230000001360 synchronised effect Effects 0.000 claims description 9
- 230000004323 axial length Effects 0.000 claims description 4
- 210000001503 joint Anatomy 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 238000003032 molecular docking Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 7
- 239000011295 pitch Substances 0.000 description 5
- 238000005096 rolling process Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 210000005239 tubule Anatomy 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/02—Details
- H05B3/06—Heater elements structurally combined with coupling elements or holders
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/40—Heating elements having the shape of rods or tubes
Landscapes
- Resistance Heating (AREA)
Abstract
The invention discloses a heater with a sheath, a processing device and a processing technology, wherein the heater comprises a heating pipe and a sheath, the outer surface of the heating pipe is provided with a spiral groove, a heating coil matched with the spiral groove is wound in the spiral groove, and the sheath is sheathed on the outer surface of the heating pipe wound with the heating coil; the heating pipe is in interference fit with the sheath and the heating coils after winding. According to the heater disclosed by the invention, the outer surface of the heating pipe wound with the heating coil is sleeved with the sheath, the sheath is connected with the heating coil wound by adopting an interference fit mode, so that gaps are avoided to the maximum extent, and the heating effect is improved. According to the processing device and the processing technology disclosed by the invention, the sheath can be synchronously sleeved on the outer surface of the heating pipe and the heating coil is wound in the extrusion process of the extrusion roller, so that the initial position of the heating coil does not need to be welded with the heating pipe. After the processing is finished, the heating coil cannot be separated from the spiral groove or generate a gap due to the toughness of the heating coil.
Description
Technical Field
The invention relates to the technical field of heaters, in particular to a sheathed heater, a processing device and a processing technology.
Background
In a hot runner system, a copper sleeve is sleeved on a hot nozzle and used for heating plastic in the hot nozzle, a sleeve heater is generally cylindrical, grooves are distributed on the surface of the sleeve heater, and heating wires are placed in the grooves.
As shown in fig. 1, a conventional heating tube in fig. 1 is generally made of copper, and has spiral grooves on its outer surface. Fig. 2 is a schematic diagram of a heating tube after winding a heating coil, in which the heating coil is wound around a spiral groove by rolling, and then two ends of the heating coil are welded to two ends of the spiral groove, so as to avoid loosening of the heating coil.
However, the heating coil in the heater in the prior art is welded after winding, and because the outside of the heating coil is usually a stainless steel tubule, the heating coil has certain toughness, when the heating coil is welded after winding, a gap is unavoidably formed between the heating coil and the spiral groove, the gap can influence the heat transfer efficiency between the heating coil and the heating pipe, and impurities are easily generated between the heating coil and the heating pipe after long-time use, so that the heating efficiency is further influenced.
In actual production, the heating coil can be welded to the spiral groove at the initial stage of winding the heating coil around the spiral groove, but weld flash exists on the outer surface of the heating tube after welding, so that the flatness of the surface of the heating tube is affected, the subsequent rolling between the heating tube and the heating tube cannot be normally performed, and if the weld flash is polished first, the heating coil is possibly damaged, and the polishing precision requirement is higher.
For the above reasons, there is a need in the art for a heater that allows for better fitting of the heating coil to the heating tube.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides a heater with a sheath, a processing device and a processing technology.
In order to achieve the above object, the present invention adopts the following technical scheme:
sheathed heater: the heating device comprises a heating pipe and a sheath, wherein a spiral groove is formed in the outer surface of the heating pipe, heating coils matched with the spiral groove are wound in the spiral groove, and the sheath is sleeved on the outer surface of the heating pipe wound with the heating coils;
the heating pipe is in interference fit with the sheath and the heating coils after winding.
Preferably, the aforementioned sheathed heater: one end of the heating pipe is provided with a positioning hole and a positioning groove, one end of the sheath is provided with a positioning bulge, the other end of the sheath is provided with a reserved gap, the positioning bulge is connected with the positioning groove, and the heating coil penetrates through the reserved gap.
A processing device for processing the sheathed heater, wherein the processing device is used for processing the sheathed heater: the device comprises a frame, an upper press roller assembly and a sliding seat, wherein an upper chute and a lower chute are respectively arranged above and at the bottom of the frame, the upper chute is parallel to the lower chute and is transversely distributed, the sliding seat can be transversely and slidably connected with the lower chute, and the upper press roller assembly can be transversely and vertically slidably connected with the upper chute;
the upper end of the sliding seat is provided with two lower squeeze rollers which are transversely arranged in parallel, and the lower end of the upper press roller assembly is provided with an upper squeeze roller which is parallel to the lower squeeze rollers and is arranged right above the two lower squeeze rollers;
when the heating pipe is placed between the upper extrusion roller and the two lower extrusion rollers, the heating pipe is also connected with a rotary feeding assembly, and the rotary feeding assembly is used for driving the heating pipe to rotate and transversely feed.
Preferably, the aforementioned processing device for a sheathed heater: the rotary feeding assembly comprises a transverse screw, a middle connecting piece and a hollow shaft which is arranged in line with the transverse screw, the transverse screw is connected to the frame through threads, and one end of the transverse screw is provided with a feeding hand wheel;
the hollow shaft is provided with a bidirectional notch with one end open;
a sheath driving sleeve which can axially slide along the bidirectional notch is arranged in the bidirectional notch, the sheath driving sleeve is connected with a push rod positioned at the center of the hollow shaft,
one end of the middle connecting piece is detachably connected with the bidirectional notch, and the other end of the middle connecting piece is detachably connected with the end part of the transverse screw rod;
when the heating pipe is sleeved on the transverse screw rod, the transverse screw rod is connected with one end of the heating pipe through the screw rod check ring, the middle connecting piece is connected with the other end of the heating pipe through the heating pipe check ring, and the outer diameter of the heating pipe check ring is smaller than that of the heating pipe;
when the sheath is sleeved on the hollow shaft, the sheath driving sleeve is connected with one end of the sheath.
Preferably, the aforementioned processing device for a sheathed heater: the middle connecting piece comprises a hexagonal section, a central shaft section, a heating pipe retainer ring and a bidirectional notch butt joint section matched with the section of the bidirectional notch, which are sequentially connected, a threaded pull rod is arranged at the center of the transverse screw rod, the transverse screw rod is connected with the hexagonal section through a hexagonal hole matched with the hexagonal section, and the threaded pull rod is connected with the center of the hexagonal section through threads;
the two-way notch is connected with the two-way notch butt joint section.
Preferably, the aforementioned processing device for a sheathed heater: the end part of the heating pipe retainer ring is connected with the positioning hole through the positioning pin, the end part of the sheath driving sleeve is connected with the positioning bulge through the positioning buckle, and the axial length of the positioning buckle is smaller than that of the positioning bulge.
Preferably, the aforementioned processing device for a sheathed heater: the push rod is also connected with a linkage bracket which can axially move and is locked at a certain fixed position, and the linkage bracket is also connected with the upper compression roller assembly and the sliding seat through an upper connecting rod and a lower connecting rod respectively;
the linkage support enables the transverse positions of the upper squeeze roller and the two lower squeeze rollers to be the same and synchronously move.
Preferably, the aforementioned processing device for a sheathed heater: the upper press roller assembly comprises a sliding sleeve, a vertical support and a heating wire guide piece, the sliding sleeve is transversely connected with the upper sliding groove in a sliding manner, the vertical support is vertically connected with the inner part of the upper sliding groove in a sliding manner, the sliding sleeve is provided with an upper threaded rod for controlling the vertical movement of the vertical support, and a central shaft of the upper press roller is connected with the lower end of the vertical support.
Preferably, the aforementioned processing device for a sheathed heater: the sliding seat is provided with two groups of upper horizontal grooves which are longitudinally arranged and two bidirectional screws which are respectively fixed on two sides of the sliding seat, the central shafts of the two lower squeeze rollers are respectively connected with the two groups of upper horizontal grooves, the central shafts of the lower squeeze rollers are provided with sliding parts, the two sliding parts on one side of the sliding seat are respectively connected with threads at two ends of the bidirectional screws, one end of one bidirectional screw is provided with a squeeze roller hand wheel, the other ends of the two bidirectional screws are respectively provided with synchronous pulleys with the same specification, and the two synchronous pulleys are connected through a synchronous belt.
The processing technology of the processing device based on the sheathed heater comprises the following steps: comprises the following steps:
sleeving the sheath on the hollow shaft, enabling the positioning bulge to be positioned in the positioning buckle, sleeving the heating pipe on the transverse screw rod, and inserting the positioning pin into the positioning hole;
the transverse screw rod and the middle connecting piece are fastened through the threaded pull rod at an angle that the positioning protrusion faces the positioning groove;
the distance between the two lower extrusion rollers is adjusted, so that the outer surfaces of the two lower extrusion rollers are tightly attached to the starting position of the spiral groove on the outer surface of the heating pipe;
adjusting the upper press roll assembly, enabling the outer surface of the upper press roll to be closely attached to the starting position of the spiral groove on the outer surface of the heating pipe, and aligning with the end parts of the two lower press rolls;
the position of the push rod relative to the linkage bracket is regulated, and the end part of the sheath is contacted with the end part of the lower extrusion roller;
the processed heating coil is opposite to the starting position of the spiral groove, and the feeding hand wheel is rotated according to a preset direction;
stopping rotating the feeding hand wheel after the heating coil is wound to the spiral groove;
driving the push rod to move towards the heating pipe until the positioning protrusion enters the positioning groove;
and removing the processed heater, and further adjusting the position of the sheath relative to the heating pipe.
The invention has the beneficial effects that:
according to the heater disclosed by the invention, the outer surface of the heating pipe wound with the heating coil is sleeved with the sheath, and the sheath is connected with the wound heating coil in an interference fit manner. The cross section of heating coil self is circular before the winding, when the winding in the inside of helicla flute, receives external force extrusion deformation and closely laminates in the inside of helicla flute, consequently when closely extrudeed in heating coil through the sheath, also is interference fit's relation between heating coil and the helicla flute, can realize the interference fit between heating pipe, heating coil, the sheath three like this, furthest avoids inside production clearance, promotes the heating effect.
According to the processing device and the processing technology disclosed by the invention, the sheath can be synchronously sleeved on the outer surface of the heating pipe and the heating coil is wound in the extrusion process of the extrusion roller, so that the initial position of the heating coil does not need to be welded with the heating pipe. And in the sleeving process, as the three squeeze rollers act on the heating coil all the time, after the sheath is sleeved, the heating coil cannot be separated from the spiral groove or generate a gap due to the toughness of the heating coil, so that the processing quality of the heater is ensured.
Drawings
FIG. 1 is a block diagram of a prior art heating tube;
FIG. 2 is a diagram showing a structure in which a heating coil is wound around a heating pipe in the prior art;
FIG. 3 is a block diagram of a jacketed heater of the present invention;
FIG. 4 is an enlarged view of a portion of the sheath of the present invention;
FIG. 5 is an enlarged view of a portion of a heating tube of the present invention;
FIG. 6 is a diagram of the overall construction of the processing apparatus of the present invention;
FIG. 7 is an enlarged view of a portion of FIG. 6 at A;
FIG. 8 is a block diagram of a slide mount according to the present invention;
FIG. 9 is an exploded view of the transverse screw, hollow shaft, intermediate connector of the present invention;
FIG. 10 is a schematic diagram of a jacket drive sleeve construction of the present invention;
meaning of reference numerals: 1-heating a pipe; 2-a sheath; 3-a frame; 4-an upper press roll assembly; 5-a sliding seat; 6-a transverse screw; 7-a hollow shaft; 8-linkage brackets; 9-an intermediate connection; 11-helical grooves; 12-heating coils; 13-positioning holes; 14-positioning grooves; 21-positioning protrusions; 22-reserving a gap; 31-a lower chute; 32-upper sliding groove; 33-auxiliary brackets; 41-sliding sleeve; 42-vertical supports; 43-heater guide; 431-guide slot; 432-locking holes; 44-upper squeeze rolls; 45-feeding a threaded rod; 51-upper horizontal groove; 52-a slider; 53-a bi-directional screw; 54-synchronous belt; 55-a lower horizontal groove; 501-a lower squeeze roll; 531-squeeze roller handwheels; 532—synchronous pulleys; 61-a feeding hand wheel; 62-a threaded pull rod; 63-screw retainer ring; 71-push rod; 711-push rod nut; 701-a bi-directional notch; 72-sheath drive sleeve; 721-positioning a buckle; 81-upper connecting rod; 82-lower link; 91-hexagonal section; 92-a central shaft section; 93-heating the pipe retainer ring; 931-locating pins; 94-bi-directional slot butt-joint section.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present invention, and are not intended to limit the scope of the present invention.
As shown in fig. 3 to 5: this embodiment discloses a sheathed heater: the heating tube comprises a heating tube 1 and a sheath 2, wherein a spiral groove 11 is formed in the outer surface of the heating tube 1, a heating coil 12 is wound in the spiral groove 11, and the heating tube 1, the spiral groove 11 and the heating coil 12 are the same as those in the prior art. The heating coil 12 has a stainless steel tubule on its outer surface, and a nickel wire, a magnesium rod, and magnesium oxide powder inside, and also has a temperature sensor. Above the prior art, the embodiment is also sleeved on the outer surface of the heating pipe 1 wound with the heating coil 12 through the sheath 2; in order to further reduce the internal clearance, the heating pipe 1 is in interference fit with the sheath 2 and the heating coil 12 after winding. It should be noted that the outer diameter of the heating coil 12 and the inner diameter of the spiral groove 11 should be matched, and the matching means that the extrusion deformed heating coil 12 (in a semicircular shape or a U-shape overall) can be tightly attached to the inside of the spiral groove 11 after the winding of the heating coil 12 is completed, and the outer surface of the heating coil 12 is slightly higher than the outer surface of the heating tube 1 (recovery deformation after extrusion). The insertion end of the heating pipe 1 of the sheath 2 is provided with an inner chamfer so as to facilitate the sheathing of the sheath 2. The material of the sheath 2 may be the same as that of the heating tube 1, so that a heating whole is formed between the sheath 2 and the heating tube 1, and in some application scenarios, the sheath 2 may also be a sleeve made of a heat-insulating material, such as mica.
One end of the heating pipe 1 is provided with a positioning hole 13 and a positioning groove 14, one end of the sheath 2 is provided with a positioning protrusion 21, the other end is provided with a reserved notch 22, and after the sheath 2 is sleeved, the positioning protrusion 21 enters the positioning groove 14. Since the heating coil 12 is wound around the spiral groove 11, the separation junction of the heating coil 12 and the heating tube 1 does not reach the end of the heating tube 1, and thus the gap 22 is reserved for passing through the heating coil 1. The front end of the positioning projection 21 is preferably beveled to facilitate better access to the interior of the positioning slot 14.
For the prior art, the outer surface of the heating pipe 1 wound with the heating coil 12 is sleeved with the sheath 2, and the sheath 2 and the wound heating coil 12 are connected in an interference fit manner. The cross section of heating coil 12 self is circular before the winding, when the winding in the inside of helicla flute 11, receives external force extrusion deformation and closely laminates in the inside of helicla flute 11, consequently when closely extrudeed in heating coil 12 through sheath 2, also is interference fit's relation between heating coil 12 and the helicla flute 11, can realize the interference fit between heating pipe 1 like this, heating coil 12, the sheath 2 three, furthest avoids inside production clearance, promotes the heating effect.
Referring to fig. 6 to 10: in order to process the sheathed heater, the embodiment also discloses a processing device of the sheathed heater, which specifically comprises a frame 3, an upper press roller assembly 4 and a sliding seat 5, wherein an upper sliding groove 32 and a lower sliding groove 31 are respectively arranged above and at the bottom of the frame 3, the upper sliding groove 32 is parallel to the lower sliding groove 31 and is transversely distributed, the sliding seat 5 can be transversely and slidably connected with the lower sliding groove 31, and the upper press roller assembly 4 can be transversely and vertically and slidably connected with the upper sliding groove 32.
The upper end of the sliding seat 5 is provided with two parallel and transversely arranged lower squeeze rollers 501, and the lower end of the upper press roller assembly 4 is provided with an upper squeeze roller 44 which is parallel to the lower squeeze rollers 501 and is arranged right above the two lower squeeze rollers 501.
When the heating pipe 1 is placed between the upper squeeze roller 44 and the two lower squeeze rollers 501, the heating pipe 1 is also connected to a rotary feeding assembly for driving the heating pipe 1 to rotate and feed in the lateral direction. The infeed means pushing the heating tube 1 to move axially relative to the squeeze roll.
Specifically, referring to fig. 6 and 9: the rotary feeding assembly comprises a transverse screw rod 6, a middle connecting piece 9 and a hollow shaft 7 which is arranged in line with the transverse screw rod 6, the transverse screw rod 6 is connected to the frame 3 through threads, one end of the rotary feeding assembly is provided with a feeding hand wheel 61 for driving the rotary feeding assembly to rotate, and the feeding hand wheel 61 can be replaced by a motor or a hydraulic motor. The hollow shaft 7 is provided with a bidirectional notch 701 with one end open; the bidirectional notch 701 is internally provided with a sheath driving sleeve 72 which can axially slide along the bidirectional notch 701, the sheath driving sleeve 72 is connected with a push rod 71 positioned at the center of the hollow shaft 7, and the push rod 71 can move along the axis of the hollow shaft 7. Since the sheath drive sleeve 72 is rotatable during operation, the push rod 71 and sheath drive sleeve 72 are preferably rotatably configured. To enhance the fixation of the hollow shaft 7, the frame 3 may also control the hollow shaft 7 by means of auxiliary brackets 33. The hollow shaft 7 is rotatable relative to the auxiliary support 33 but is not axially movable relative to the auxiliary support 33. During operation, the auxiliary support 33 is locked in position relative to the frame 3, but the direct lateral position of both is adjustable.
One end of the middle connecting piece 9 is detachably connected with the bidirectional notch 701, and the other end of the middle connecting piece is detachably connected with the end part of the transverse screw 6; when the heating pipe 1 is sleeved on the transverse screw 6, the transverse screw 6 is connected with one end of the heating pipe 1 through the screw check ring 63, the intermediate connecting piece 9 is connected with the other end of the heating pipe 1 through the heating pipe check ring 93, and the outer diameter of the heating pipe check ring 93 is smaller than that of the heating pipe 1, so that the jacket 2 is convenient to be sleeved (and the passing of the positioning protrusion 21 is not influenced).
When the sheath 2 is sleeved on the hollow shaft 7, the sheath driving sleeve 72 is connected with one end of the sheath 2 and is used for pushing the sheath 2 to be sleeved on the outer surface of the heating pipe 1.
Specific: the intermediate connector 9 comprises a hexagonal section 91, a central shaft section 92, a heating pipe retainer 93 and a bidirectional notch butting section 94 matched with the section of the bidirectional notch 701 which are connected in sequence. Screw holes can be arranged on the side parts of the two-way notch butting section 94, the two-way notch 701 is in screw connection with the two-way notch butting section 94 through corresponding through holes, and countersunk screws are adopted for screws. The removable design between the bi-directional slot interface section 94 and the bi-directional slot 701 is to facilitate removal and installation of the sheath drive sleeve 72.
The specific connection mode of the transverse screw 6 and the middle connecting piece 9 is as follows: the center of the transverse screw rod 6 is provided with a threaded pull rod 62, the transverse screw rod 6 is connected with the hexagonal section 91 through a hexagonal hole matched with the hexagonal section 91, and the threaded pull rod 62 is connected with the center of the hexagonal section 91 through threads. The torque transmission between the transverse screw rod 6 and the middle connecting piece 9 is realized, the fixing of the two ends of the heating pipe 1 can be realized through the heating pipe check ring 93 and the screw rod check ring 63, the outer diameter of the transverse screw rod 6 is preferably matched with the inner diameter of the heating pipe 1, and the inner part of the heating pipe 1 is supported.
The end of the heating tube retainer 93 is connected to the positioning hole 13 by a positioning pin 931 for ensuring that the heating tube 1 can rotate synchronously with the intermediate connection 9. The end of the sheath driving sleeve 72 is connected with the positioning protrusion 21 through the positioning buckle 721 for ensuring that the sheath 2 and the hollow shaft 7 can rotate synchronously. To avoid interference of the positioning buckle 721 with the insertion of the positioning protrusion 21 into the positioning groove 14, the axial length of the positioning buckle 721 should be smaller than the axial length of the positioning protrusion 21.
The upper press roller assembly 4 of this embodiment includes a sliding sleeve 41, a vertical support 42 and a heating wire guide 43, where the sliding sleeve 41 is transversely slidably connected to the upper chute 32, the vertical support 42 is vertically slidably connected to the inside of the upper chute 32, and the above-mentioned sliding connection manner of transverse sliding and vertical sliding implements that the foregoing "the upper press roller assembly 4 can be transversely and vertically slidably connected to the upper chute 32", and any specific sliding connection manner can be adopted in the prior art. The sliding sleeve 41 is provided with an upper threaded rod 45 for controlling the vertical movement of the vertical support 42. The upper threaded rod 45 is connected to the upper end of the sliding sleeve 41 through threads, and the lower end of the upper threaded rod 45 is rotatably connected to the vertical bracket 42. The central shaft of the upper squeeze roll 44 is connected to the lower end of the vertical support 42.
The heating wire guide piece 43 can be vertically or transversely adjusted relative to the vertical support 42, the tail end of the heating wire guide piece 43 is provided with an open circular arc, the circular arc is used for guiding the heating wire coil 12, the fact that the winding-free heating wire coil 12 is opposite to or tangential to the spiral groove 11 to be wound as much as possible is guaranteed, two locking holes 432 are formed in the opening of the heating wire coil 12, the open circular arc can be sealed by inserting iron wires into the two locking holes 432, and the heating wire coil 12 is prevented from being separated from the open circular arc.
The sliding seat 5 is provided with two groups of upper horizontal grooves 51 longitudinally arranged and two bidirectional screws 53 respectively axially fixed on two sides of the sliding seat 5, the bidirectional screws 53 belong to the prior art, and two ends of the bidirectional screws 53 are provided with threads with opposite rotation directions and equal screw pitches. The center shafts of the two lower squeeze rolls 501 are respectively connected to the two groups of upper horizontal grooves 51, the center shaft of the lower squeeze roll 501 is provided with sliding parts 52, the two sliding parts 52 on one side of the sliding seat 5 are respectively connected to threads on two ends of the bidirectional screw rods 53, one end of one bidirectional screw rod 53 is provided with a squeeze roll hand wheel 531, the other ends (opposite ends of the squeeze roll hand wheel 531) of the two bidirectional screw rods 53 are respectively provided with synchronous pulleys 532 with the same specification, and the two synchronous pulleys 532 are connected through a synchronous belt 54. In order to ensure the stability of the driving of the lower squeeze roller 501 by the slider 52, the slide holder 5 is further provided with a lower horizontal groove 55 parallel to the upper horizontal groove 51, the guiding of the slider 52 being achieved by the lower horizontal groove 55. When the squeeze roller hand wheel 531 is rotated, on the one hand, the two sliding pieces 52 at the two ends of the same bidirectional screw 53 can synchronously move relative to the bidirectional screw 53; on the other hand, the sliders 52 on both sides are synchronously moved by the timing belt 54. The two lower squeeze rollers 501 can be synchronously opened or closed relative to the center of the sliding seat 5 on the premise of ensuring parallelism, so that the distance between the two lower squeeze rollers 501 is adjusted anyway, and the supporting axes of the two lower squeeze rollers 501 are always positioned under the upper squeeze roller 44 and are opposite to the transverse screw 6 in the vertical direction.
In order to ensure synchronization of the three squeeze rolls and ensure that the jacket 2 can timely sleeve the heating pipe 1 and the heating coil 12 after rolling, the push rod 71 of the embodiment is further connected with a linkage support 8 capable of axially moving and locking at a certain fixed position, wherein the axial movement and locking can be realized by installing two push rod nuts 711 on the push rod 71, and the two push rod nuts 711 are respectively positioned on two sides of the linkage support 8 and used for adjusting the axial position of the jacket driving sleeve 72.
The linkage support 8 is also connected with the upper compression roller assembly 4 and the sliding seat 5 through an upper connecting rod 81 and a lower connecting rod 82 respectively; the linkage support 8 makes the lateral positions between the upper squeeze roller 44 and the two lower squeeze rollers 501 the same and follows the squeeze rollers to move synchronously.
The embodiment also discloses a processing technology of the processing device based on the sheathed heater, which comprises the following steps:
the sheath 2 is sleeved on the hollow shaft 7, the positioning protrusion 21 is positioned in the positioning buckle 721, the heating pipe 1 is sleeved on the transverse screw rod 6, and the positioning pin 931 is inserted into the positioning hole 13.
The transverse screw 6 is sleeved into the hexagonal section 91 of the intermediate connecting piece 9 at an angle that the positioning protrusion 21 faces the positioning groove 14, and the transverse screw 6 and the intermediate connecting piece 9 are fastened through the threaded pull rod 62, so that the heating pipe 1 is fixed. The distance between the two lower squeeze rolls 501 is adjusted, so that the outer surfaces of the two lower squeeze rolls 501 are closely attached to the starting position of the spiral groove 11 on the outer surface of the heating pipe 1, namely, the starting position of winding the spiral groove 11 and the heating wire coil 12.
The upper press roll assembly 4 is adjusted such that the outer surface of the upper press roll 44 closely fits the start of the spiral groove 11 of the outer surface of the heating tube 1 and is aligned with the ends of the two lower press rolls 501 (the connecting ends of the jacket 2).
By rotating the push rod nut 711, the push rod 71 is axially moved relative to the linkage support 8, ensuring that the end of the jacket 2 contacts the end of the lower squeeze roller 501, and that a portion of the jacket 2 is already sleeved onto one end of the heating tube 1.
The winding start end of the processed heating coil 12 is aligned to the start position of the spiral groove 11, the feeding hand wheel 61 is rotated according to the preset direction, in the rotating process, the transverse screw 6 pushes the heating pipe 1, the transverse screw 6 transmits torque to the heating pipe 1 and the sheath driving sleeve 72 through the middle connecting piece 9, and the sheath driving sleeve 72 drives the sheath 2 to synchronously rotate along with the heating pipe 1. The three squeeze rolls sequentially wind the heating coils 12 to the spiral groove 11. Since the linkage support 8 acts on the upper press roller assembly 4 (the upper connecting rod 81 acts on the sliding sleeve 41), the sliding seat 5 and the end part of the sheath 2 through the upper connecting rod 81, the lower connecting rod 82 and the push rod 71 respectively, the transverse position between the sheath 2 and the squeeze roller is not changed in the winding process of the heating coil 12, namely, the sheath 2 is tightly attached to the end part of the squeeze roller.
During the pushing process of the transverse screw 6, the sheath 2 is sleeved into the heating pipe 1 while keeping the state of rotating synchronously with the heating pipe 1, but since the pitch of the spiral groove 11 is far greater than that of the transverse screw 6, when the heating pipe 1 moves transversely relative to the extrusion roller, the transverse moving speed of the heating wire 12 relative to the extrusion roller is greater than that of the transverse screw 6, so the length of the extrusion roller needs to ensure that the winding of the heating wire 12 relative to the spiral groove 11 can be completely covered.
After the winding of the heating coil 12 into the spiral groove 11 is completed, the rotation of the feeding hand wheel 61 is stopped, and at this time, the sheath 2 is not yet completely sleeved into the heating tube 1 (the distance difference is generated by the pitch difference between the transverse screw 6 and the spiral groove 11), but the sheath can already cover most of the wound heating coil 12, and in general, the pitch of the transverse screw 6 is 30% -75% of the average pitch of the spiral groove 11.
After the winding of the heating coil 12 is completed, the sheath 2 can be further sleeved on the outer surface of the heating tube 1 by driving the push rod 71 to move towards the heating tube 1 until the positioning protrusion 21 enters the positioning groove 14; the sheath 2 is ensured to be sleeved into the heating pipe 1 and the heating coil 12 which is wound as far as possible. In this process, the squeeze roller slides laterally (axially) with respect to the heating pipe 1, and can squeeze the heating coil 12 so as not to loosen. The push rod 71 can be driven by knocking or pushing by a cylinder.
Finally, the finished heater is removed, the position of the sheath 2 relative to the heating tube 1 is further adjusted, and the positioning protrusion 21 completely enters the positioning groove 14. In the process of sleeving the sheath 2, if it is difficult to sleeve the sheath 2 into the heating pipe 1, the method of heating the sheath 2 can be adopted for improvement.
Compared with the prior art, the processing device and the processing technology described in the embodiment can synchronously sleeve the sheath 2 to the heating pipe 1 and the outer surface of the heating coil 12 after winding in the extrusion process of the extrusion roller, so that the initial position of the heating coil 12 does not need to be welded with the heating pipe 1. And in the sleeving process, as the three squeeze rollers always act on the heating coil 12, after the sheath 2 is sleeved, the heating coil 12 cannot be separated from the spiral groove 11 or generate a gap due to the toughness of the heating coil, so that the processing quality of the heater is ensured.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and variations could be made by those skilled in the art without departing from the technical principles of the present invention, and such modifications and variations should also be regarded as being within the scope of the invention.
Claims (8)
1. The processing device of the sheathed heater comprises a heating pipe (1) and a sheath (2), wherein a spiral groove (11) is formed in the outer surface of the heating pipe (1), a heating coil (12) matched with the spiral groove (11) is wound in the spiral groove (11), and the sheath (2) is sleeved on the outer surface of the heating pipe (1) wound with the heating coil (12);
the heating pipe (1) is in interference fit with the sheath (2) and the heating coil (12) after winding;
one end of the heating pipe (1) is provided with a positioning hole (13) and a positioning groove (14), one end of the sheath (2) is provided with a positioning bulge (21), the other end of the sheath is provided with a reserved gap (22), the positioning bulge (21) is connected with the positioning groove (14), and the heating coil (12) penetrates through the reserved gap (22);
the processing device of the sheathed heater is characterized in that: the device comprises a frame (3), an upper press roller assembly (4) and a sliding seat (5), wherein an upper chute (32) and a lower chute (31) are respectively arranged above and at the bottom of the frame (3), the upper chute (32) is parallel to the lower chute (31) and is transversely distributed, the sliding seat (5) can be transversely and slidably connected with the lower chute (31), and the upper press roller assembly (4) can be transversely and vertically and slidably connected with the upper chute (32);
the upper end of the sliding seat (5) is provided with two lower squeeze rollers (501) which are transversely arranged in parallel, and the lower end of the upper press roller assembly (4) is provided with an upper squeeze roller (44) which is parallel to the lower squeeze rollers (501) and is arranged right above the two lower squeeze rollers (501);
when the heating pipe (1) is placed between the upper extrusion roller (44) and the two lower extrusion rollers (501), the heating pipe (1) is further connected with a rotary feeding assembly, and the rotary feeding assembly is used for driving the heating pipe (1) to rotate and transversely feed.
2. The processing apparatus of the sheathed heater according to claim 1, wherein: the rotary feeding assembly comprises a transverse screw (6), a middle connecting piece (9) and a hollow shaft (7) which is arranged in line with the transverse screw (6), wherein the transverse screw (6) is connected to the frame (3) through threads, and one end of the transverse screw is provided with a feeding hand wheel (61);
the hollow shaft (7) is provided with a bidirectional notch (701) with one end open;
a sheath driving sleeve (72) which can axially slide along the bidirectional notch (701) is arranged in the bidirectional notch (701), the sheath driving sleeve (72) is connected with a push rod (71) positioned at the center of the hollow shaft (7),
one end of the middle connecting piece (9) is detachably connected with the bidirectional notch (701), and the other end of the middle connecting piece is detachably connected with the end part of the transverse screw rod (6);
when the heating pipe (1) is sleeved on the transverse screw (6), the transverse screw (6) is connected with one end of the heating pipe (1) through a screw check ring (63), the middle connecting piece (9) is connected with the other end of the heating pipe (1) through a heating pipe check ring (93), and the outer diameter of the heating pipe check ring (93) is smaller than the outer diameter of the heating pipe (1);
when the sheath (2) is sleeved on the hollow shaft (7), the sheath driving sleeve (72) is connected with one end of the sheath (2).
3. The processing apparatus of the sheathed heater according to claim 2, wherein: the middle connecting piece (9) comprises a hexagonal section (91), a central shaft section (92), a heating pipe retainer ring (93) and a bidirectional notch butt joint section (94) which are sequentially connected, wherein the cross section of the bidirectional notch butt joint section is matched with that of the bidirectional notch (701), the center of the transverse screw (6) is provided with a threaded pull rod (62), the transverse screw (6) is connected with the hexagonal section (91) through a hexagonal hole matched with the hexagonal section (91), and the threaded pull rod (62) is connected with the center of the hexagonal section (91) through threads;
the bi-directional notch (701) is connected to a bi-directional notch docking section (94).
4. A processing apparatus for a sheathed heater according to claim 3, wherein: the end part of the heating pipe retainer ring (93) is connected with the positioning hole (13) through the positioning pin (931), the end part of the sheath driving sleeve (72) is connected with the positioning protrusion (21) through the positioning buckle (721), and the axial length of the positioning buckle (721) is smaller than that of the positioning protrusion (21).
5. The processing apparatus for a sheathed heater according to claim 4, wherein: the push rod (71) is also connected with a linkage bracket (8) which can axially move and is locked at a certain fixed position, and the linkage bracket (8) is also connected with the upper press roller assembly (4) and the sliding seat (5) through an upper connecting rod (81) and a lower connecting rod (82) respectively;
the linkage support (8) enables the transverse positions of the upper squeeze roller (44) and the two lower squeeze rollers (501) to be the same and synchronously move.
6. The processing apparatus of the sheathed heater according to claim 5, wherein: go up compression roller assembly (4) including slip cap (41), vertical support (42) and heater guide (43), slip cap (41) horizontal sliding connection is in last spout (32), vertical sliding connection of vertical support (42) is in the inside of last spout (32), and slip cap (41) are equipped with threaded rod (45) on being used for controlling vertical movement of vertical support (42), the center pin of going up squeeze roller (44) is connected in the lower extreme of vertical support (42).
7. The processing apparatus of the sheathed heater according to claim 6, wherein: the sliding seat (5) is provided with two groups of upper horizontal grooves (51) which are longitudinally arranged and two bidirectional screws (53) which are respectively fixed on two sides of the sliding seat (5), the central shafts of the two lower extrusion rollers (501) are respectively connected with the two groups of upper horizontal grooves (51), the central shafts of the lower extrusion rollers (501) are provided with sliding parts (52), the two sliding parts (52) on one side of the sliding seat (5) are respectively connected with threads at two ends of the bidirectional screws (53), one end of one bidirectional screw (53) is provided with an extrusion roller hand wheel (531), the other ends of the two bidirectional screws (53) are respectively provided with synchronous pulleys (532) with the same specification, and the two synchronous pulleys (532) are connected through a synchronous belt (54).
8. A process for manufacturing a sheathed heater according to claim 7, wherein: comprises the following steps:
sleeving the sheath (2) on the hollow shaft (7), enabling the positioning bulge (21) to be positioned in the positioning buckle (721), sleeving the heating pipe (1) on the transverse screw (6), and inserting the positioning pin (931) into the positioning hole (13);
the transverse screw (6) and the middle connecting piece (9) are fastened by the threaded pull rod (62) at an angle that the positioning bulge (21) is opposite to the positioning groove (14);
the distance between the two lower squeeze rolls (501) is adjusted, so that the outer surfaces of the two lower squeeze rolls (501) are tightly attached to the starting position of the spiral groove (11) on the outer surface of the heating pipe (1);
adjusting the upper press roller assembly (4), enabling the outer surface of the upper press roller (44) to be closely attached to the starting position of the spiral groove (11) on the outer surface of the heating pipe (1), and aligning with the end parts of the two lower press rollers (501);
adjusting the position of the push rod (71) relative to the linkage support (8) and enabling the end part of the sheath (2) to be contacted with the end part of the lower squeeze roller (501);
the machined heating coil (12) is opposite to the starting position of the spiral groove (11), and the feeding hand wheel (61) is rotated according to a preset direction;
stopping rotating the feeding hand wheel (61) after the heating coil (12) is wound to the spiral groove (11);
the push rod (71) is driven to move towards the heating pipe (1) until the positioning bulge (21) enters the positioning groove (14);
and (5) taking down the processed heater, and further adjusting the position of the sheath (2) relative to the heating pipe (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111411509.1A CN114126115B (en) | 2021-11-25 | 2021-11-25 | Heater with sheath, processing device and processing technology |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111411509.1A CN114126115B (en) | 2021-11-25 | 2021-11-25 | Heater with sheath, processing device and processing technology |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106879091A (en) * | 2017-01-23 | 2017-06-20 | 袁芳革 | Pipeline formula heating tube device convenient to equipment |
| CN209903857U (en) * | 2019-04-10 | 2020-01-07 | 东莞市驰睿五金科技有限公司 | Auxiliary heater of injection molding machine |
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- 2021-11-25 CN CN202111411509.1A patent/CN114126115B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106879091A (en) * | 2017-01-23 | 2017-06-20 | 袁芳革 | Pipeline formula heating tube device convenient to equipment |
| CN209903857U (en) * | 2019-04-10 | 2020-01-07 | 东莞市驰睿五金科技有限公司 | Auxiliary heater of injection molding machine |
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| CN114126115A (en) | 2022-03-01 |
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