CN210651562U - Production mould of prefabricated heat preservation pipe fitting of abnormal shape - Google Patents
Production mould of prefabricated heat preservation pipe fitting of abnormal shape Download PDFInfo
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- CN210651562U CN210651562U CN201921386035.8U CN201921386035U CN210651562U CN 210651562 U CN210651562 U CN 210651562U CN 201921386035 U CN201921386035 U CN 201921386035U CN 210651562 U CN210651562 U CN 210651562U
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Abstract
The utility model relates to a production mould of a special-shaped prefabricated heat-insulation pipe fitting, which comprises an upper mould, a lower mould and an outer protecting pipe; the lower part of the upper die is provided with an upper foaming cavity, the upper part of the lower die is provided with a lower foaming cavity, two ends of the upper foaming cavity are provided with upper side plates, the center of the lower part of the upper side plate is provided with an upper semicircular hole, two ends of the lower foaming cavity are provided with lower side plates, the center of the lower part of the lower side plate is provided with a lower semicircular hole, when the upper die and the lower die are assembled, the upper foaming cavity and the lower foaming cavity form a foaming cavity with a circular cross section, the upper semicircular hole and the lower semicircular hole form an inner tube perforation with a circular cross section, and the foaming cavity and the inner tube perforation are concentric; the outer protecting pipe comprises an upper protecting shell and a lower protecting shell which are mutually buckled into a cylinder; the utility model discloses can promote the density on polyurethane layer, improve the production efficiency of the prefabricated heat preservation pipe fitting of abnormal shape, go up the hand fast, easy to use.
Description
Technical Field
The utility model belongs to the technical field of prefabricated heat preservation pipe fitting production, concretely relates to prefabricated heat preservation pipe fitting's of abnormal shape production mould.
Background
At present, the prefabricated direct-buried heat-insulation pipe fitting is manufactured in China, the pipe sheathing technology is basically adopted, wherein a plastic bracket, a wood block and other materials are adopted between an outer protective pipe and a working pipeline (usually a steel pipe) as a technical means for supporting concentricity, and then polyurethane is injected into the outer protective pipe and the working pipeline for foaming; when the prefabricated heat-preservation pipe fittings of abnormal shapes such as the prefabricated heat-preservation elbow or the tee joint are produced, in order to enable the shape of the outer protective pipe to be consistent with that of the inner pipe, the conventional method is to cut the outer polyethylene protective pipe according to the preset shape, then to sleeve the cut outer polyethylene protective pipe outside the steel pipe according to radian for splicing, then to fix and seal the seam, finally to plug the two ends of the prefabricated heat-preservation pipe fittings of abnormal shapes, then to inject polyurethane material into the prefabricated heat-preservation pipe fittings from one end or two ends, finally to fix and form the polyurethane foam material, to remove the sealing devices at the two ends of the prefabricated heat-preservation pipe fittings of abnormal shapes and to level the two end surfaces, thus completing the manufacture of the whole prefabricated heat-preservation pipe fittings of abnormal shapes; from the steps, the whole manufacturing process of the special-shaped prefabricated heat-insulation pipe still needs consumables such as a bracket and the like, and the steps of binding and supporting are various, the working hours are consumed, and the production efficiency is not high.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming prior art not enough and providing a prefabricated heat preservation pipe fitting production mould of abnormal shape, can reduce the production step of the prefabricated heat preservation pipe fitting of abnormal shape through using this production mould, improved the production efficiency of the prefabricated heat preservation pipe fitting of abnormal shape.
The technical scheme of the utility model as follows:
a production mold of a special-shaped prefabricated heat-insulation pipe fitting comprises an upper mold, a lower mold and an outer protective pipe;
the lower part of the upper die is provided with an upper foaming cavity, the upper part of the lower die is provided with a lower foaming cavity, two ends of the upper foaming cavity are provided with upper side plates, the center of the lower part of the upper side plate is provided with an upper semicircular hole, two ends of the lower foaming cavity are provided with lower side plates, the center of the lower part of the lower side plate is provided with a lower semicircular hole, when the upper die and the lower die are assembled, the upper foaming cavity and the lower foaming cavity form a foaming cavity with a circular cross section, the upper semicircular hole and the lower semicircular hole form an inner tube perforation with a circular cross section, and the foaming cavity and the inner tube perforation are concentric; the upper die is provided with more than one injection hole for injecting polyurethane foaming materials; the upper die and the lower die are matched through a locking device;
the outer pillar includes last protecting crust and lower protecting crust that mutual lock becomes a section of thick bamboo, the external diameter after going up protecting crust and lower protecting crust lock joint equals the internal diameter of foaming cavity, go up the protecting crust and go up and be provided with the injection via hole corresponding the injection hole.
Furthermore, locking device is including setting up the upper limb of going up the mould both sides, setting up the lower wing of two sides of lower mould and being used for the fixed fixing bolt of upper limb and lower wing locking.
Furthermore, the long edge two sides of the upper die are provided with positioning protrusions in a downward protruding mode, and when the upper die and the lower die are combined, the positioning protrusions are just located on the outer side of the lower die.
Furthermore, the upper semicircular hole and the lower semicircular hole are provided with hole walls with certain lengths.
Furthermore, the lower edge of the upper protective shell protrudes downwards to form an upper buckling part, the upper edge of the lower protective shell corresponds to the upper buckling part and is provided with a lower buckling part, and the upper buckling part is buckled on the outer side of the lower buckling part through an L-shaped clamping plate structure.
Furthermore, go up the protective housing with the protective housing is connected through the connecting piece of "worker" style of calligraphy down, the connecting piece is flexible material, the upper portion of connecting piece forms the last space of inserting that is used for holding protective housing lower limb, the lower part of connecting piece forms the lower space of inserting that is used for holding protective housing upper limb down.
Further, the thickness of the lower edge part of the upper protective shell is gradually reduced downwards to form an upper insertion part which is beneficial to being inserted into the upper insertion space, and the thickness of the upper edge part of the lower protective shell is gradually reduced upwards to form a lower insertion part which is beneficial to being inserted into the lower insertion space.
Furthermore, the connecting piece comprises a first connecting piece, a second connecting piece and a third connecting piece, the first connecting piece and the second connecting piece are arranged in parallel, the center lines of the first connecting piece and the second connecting piece are overlapped, and the third connecting piece is connected between the first connecting piece and the second connecting piece; the thickness of the first connecting piece is gradually reduced from the middle to two sides, and the thickness of the second connecting piece is gradually reduced from the middle to two sides.
Furthermore, the contact surface of the lower die and the ground is a plane.
A production process of a special-shaped prefabricated heat-insulation pipe fitting comprises the following steps:
flatly placing the lower die;
a lower protective shell matched with the lower foaming cavity is placed into the lower foaming cavity of the lower die;
erecting the inner pipe on the two upper semicircular holes;
buckling the upper protective shell on the lower protective shell;
matching the upper die with the lower die completely and then closing the dies;
injecting a polyurethane foaming material into the foaming cavity through the injection hole, wherein the specifications of the prefabricated heat-insulation pipe fittings are different, the using amount of the polyurethane foaming material is different, and the injection time of the polyurethane foaming material is adjusted according to the models of the prefabricated heat-insulation pipe fittings to complete foaming;
curing for 10-900 seconds, opening the upper die, and taking out the molded prefabricated heat-insulation pipe fitting.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses an upper die, lower mould and outer pillar are used in coordination, provide the holding power for the outer wall of outer pillar after upper die and lower mould compound die, have limited the inner tube in the position concentric with foaming die cavity simultaneously, the foaming shaping of polyurethane foaming material between the upper die and the lower mould of compound die, because the restriction of upper die and lower mould, the outer pillar can not misplace or drop because of the inflation of polyurethane, because the restriction of upper die and lower mould simultaneously, can promote the density of polyurethane more than 10%; the production mold of the utility model is especially suitable for the production of the abnormal-shaped prefabricated heat-insulation pipe fittings with the diameter below 280mm, the upper mold and the lower mold can be repeatedly used after one-time manufacture, the effect is reliable, the outer protective pipe is produced by ABS plastic suction process and is formed at one time, the produced outer protective pipe can be used without being processed, and the production efficiency of the abnormal-shaped prefabricated heat-insulation pipe fittings is greatly improved;
the utility model does not need any large-scale equipment when producing the special-shaped prefabricated heat-insulation pipe fitting, has few steps, is simple to operate, can be produced immediately by workers after simple demonstration of the workers, and is easy to use; because the prefabricated outer protective pipe which is directly buckled into a cylinder is adopted, the cutting and splicing process is not needed, even the gap sealing of the outer protective pipe and the final leveling process of the polyethylene layer are not needed, and meanwhile, a large number of brackets are not needed to concentrically operate the inner pipe, so that the efficiency is improved by more than 2 times compared with the production process of the traditional special-shaped prefabricated heat-insulation pipe fitting; through the utility model discloses a prefabricated heat preservation pipe fitting of abnormal shape that production technology produced's outer pillar seam is few, the molding radian is natural, and polyurethane foam layer texture is even closely knit, compares in the prefabricated heat preservation pipe fitting of abnormal shape of traditional technology production, and heat preservation density promotes more than 10%, effectively reduces workman intensity of labour, and production efficiency improves and is showing.
Drawings
Fig. 1 is a schematic top view of an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a C-terminal according to an embodiment of the present invention.
3 fig. 3 3 3 is 3 a 3 cross 3- 3 sectional 3 view 3 along 3 the 3 direction 3 a 3- 3 a 3 according 3 to 3 an 3 embodiment 3 of 3 the 3 present 3 invention 3. 3
Fig. 4 is a cross-sectional view of one embodiment at B in fig. 3.
Fig. 5 is a cross-sectional view of another embodiment at B in fig. 3.
Fig. 6 is a schematic structural diagram of a connecting member according to an embodiment of the present invention.
Fig. 7 is a schematic top view of another embodiment of the present invention.
In the figure, an upper die 1, an upper die main body 11, an upper wing 12, an upper semicircular hole 13, an injection hole 14 and an upper fixing hole 16; the lower die 2, the lower die main body 21, the lower wing 22, the lower semicircular hole 25 and the lower fixing hole 26; an inner tube 3; a fixing bolt 4; an upper protective shell 5, an upper buckling part 51, an upper inserting part 52, an injection through hole 53 and a positioning protrusion 54; a lower protective shell 6, a lower buckling part 61 and a lower inserting part 62; a foaming layer 7; a connecting member 8, a first connecting piece 81, a second connecting piece 82, a third connecting piece 83, and an upper insertion space 84.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example 1
The utility model discloses inner tube 3 in the description attached drawing is the working pipeline at the prefabricated heat preservation pipe fitting center of abnormal shape, is the steel pipe usually, for prior art, the utility model discloses foaming layer 7 in the description attached drawing is the polyurethane heat preservation that the polyurethane foaming of prefabricated heat preservation pipe fitting formed promptly, is prior art.
As shown in fig. 1 to 4, a production mold for a special-shaped prefabricated heat-insulation pipe fitting comprises an upper mold 1, a lower mold 2 and an outer protective pipe;
an upper foaming cavity is formed in the lower portion of the upper die 1, a lower foaming cavity is formed in the upper portion of the lower die 2, upper side plates are arranged at two ends of the upper foaming cavity, an upper semicircular hole 13 is formed in the center of the lower portion of the upper side plate, lower side plates are arranged at two ends of the lower foaming cavity, a lower semicircular hole 25 is formed in the center of the lower portion of the lower side plate, when the upper die 1 and the lower die 2 are assembled, the upper foaming cavity and the lower foaming cavity form a foaming cavity with a circular cross section, the upper semicircular hole 13 and the lower semicircular hole 25 form an inner tube perforation with a circular cross section, and the foaming cavity; the upper die 1 is provided with more than one injection hole 14 for injecting polyurethane foaming materials, and the upper die 1 and the lower die 2 are closed through a locking device; specifically, the injection holes 14 are formed at two ends and/or the middle of the upper die 1, preferably, one injection hole 14 is formed at each of the two ends of the upper die 1, and one injection hole 14 is formed at the middle of the upper die 1.
The outer protecting pipe comprises an upper protecting shell 5 and a lower protecting shell 6 which are mutually buckled into a cylinder, the outer diameter of the buckled upper protecting shell 5 and the buckled lower protecting shell 6 is equal to the inner diameter of the foaming cavity, and the upper protecting shell 5 is provided with an injection through hole 53 corresponding to the injection hole 14.
As shown in fig. 1 to 4, specifically, in order to fix the upper die 1 and the lower die 2 together, the locking device includes upper wings 12 provided on both sides of the upper die 1, lower wings 22 provided on both sides of the lower die 2, and fixing bolts 4 for locking and fixing the upper wings 12 and the lower wings 22; obviously, the mutual contact surfaces of the upper wing 12 and the lower wing 22 need to be flat or matched with each other, the upper wing 12 is provided with an upper fixing hole 16, and the lower wing 22 needs to be provided with a lower fixing hole 26 corresponding to the upper fixing hole 25; in order to distinguish the upper blade 12 from other parts of the upper die 1, a part of the upper die 1 for forming an upper foam chamber is referred to as an upper die main body 11, and a part of the lower die 2 for forming a lower foam chamber is referred to as a lower die main body 21, and it is preferable that the upper blade 12 extends in the longitudinal direction of the upper die main body 11 and continues in the hole wall direction of the upper semicircular hole 13 at both ends of the upper die main body 11, so as to facilitate the clamping and fixing of the upper die 1 and the lower die 2 at both ends of the foam chamber.
As shown in fig. 2, it is preferable that positioning protrusions 54 are protruded downward from both sides of the long side of the upper mold 1, and when the upper mold 1 and the lower mold 2 are laminated, the upper mold 1 is covered on the lower mold 2 and the positioning protrusions 54 are located just outside the lower mold 2.
As shown in fig. 1, it is preferable that each of the upper semicircular hole 13 and the lower semicircular hole 25 has a hole wall with a certain length, so that the hole wall of the inner pipe through hole can be used for a long time and is deformed due to abrasion.
As shown in fig. 4, specifically, an upper buckling portion 51 is provided at a lower edge of the upper protective shell 5 in a downward protruding manner, a lower buckling portion 61 is provided at an upper edge of the lower protective shell 6 corresponding to the upper buckling portion 51, and the upper buckling portion 51 is buckled to an outer side of the lower buckling portion 61 through an L-shaped snap-gauge structure; because the thickness of outer pillar is usually between 5mm to 12mm, relative thickness is not enough, consequently is not suitable for the block structure of concave-convex type, L shape cardboard structure owing to have a horizontally bottom, consequently can also play the supporting role to last mould 1, and the vertical part of L shape cardboard structure can support simultaneously and go up mould 2 for last mould 1 has been fixed between last mould 1 and lower protective housing 6.
Preferably, the contact surface of the lower mold 2 and the ground is a plane so as to facilitate the flat placement of the lower mold 2.
A production process of a production mold using a special-shaped prefabricated heat-insulation pipe fitting comprises the following steps:
flatly placing the lower die 2;
a lower protective shell 5 matched with the lower foaming cavity is placed into the lower foaming cavity of the lower die 2;
the inner pipe 3 is erected on the two upper semicircular holes 13;
the upper protective shell 5 is buckled on the lower protective shell 6;
matching the upper die 1 and the lower die 2 completely and then closing the dies;
injecting polyurethane foaming materials into the foaming cavity through the injection holes 14, wherein the specifications of the prefabricated heat-insulation pipe fittings are different, the using amount of the polyurethane foaming materials is different, and the injection time of the polyurethane foaming materials is adjusted according to the models of the prefabricated heat-insulation pipe fittings to complete foaming;
according to the specifications of different prefabricated heat-insulation pipe fittings, polyurethane is cured for 10-900 seconds, the upper die 1 is opened, and the molded prefabricated heat-insulation pipe fitting is taken out.
The polyurethane foam may bond the inner pipe and the outer sheath during the solidification process, but according to the actual production, when the upper casing 5 and the lower casing 6 of the present embodiment are used, the upper engaging portion 51 may be partially separated from the lower engaging portion 61, and the separated joint may be sealed with a structural adhesive.
What is shown in fig. 1 is the schematic view of the production mould of the prefabricated heat preservation pipe fitting of abnormal shape of elbow type, what is shown in fig. 7 is the schematic view of the production mould of the prefabricated heat preservation pipe fitting of abnormal shape of tee bend or T type, and of course, it is similar, the utility model discloses can also produce the prefabricated heat preservation pipe fitting of other shapes after slightly deforming.
Example 2
This example is another embodiment based on example 1, and the description of the same technical solution as in example 1 will be omitted, and only the technical solution different from example 1 will be explained. In this embodiment 2, the upper protective shell 5 and the lower protective shell 6 are connected by the connecting member 8 in the shape of an i.
As shown in fig. 4 and 5, the upper protective shell 5 and the lower protective shell 6 are connected by an i-shaped connecting member 8, the connecting member 8 is made of a flexible material, specifically, a polyethylene material, an upper insertion space 84 for accommodating the lower edge of the upper protective shell 5 is formed at the upper part of the connecting member 8, and a lower insertion space for accommodating the upper edge of the lower protective shell 6 is formed at the lower part of the connecting member 8; the connecting piece 8 can be directly produced into a strip according to the specification of the outer protective pipe through injection molding or extrusion molding, and a certain length can be taken as required when the special-shaped prefabricated heat-insulation pipe fitting is produced.
Preferably, the thickness of the lower edge of the upper protective shell 5 is gradually reduced downwards to form the upper insertion portion 52 for facilitating the insertion into the upper insertion space 84, and the thickness of the upper edge of the lower protective shell 6 is gradually reduced upwards to form the lower insertion portion 62 for facilitating the insertion into the lower insertion space, so that the thickness of the joint is kept as consistent as possible with the thickness of the outer sheath.
Specifically, the connecting piece 8 comprises a first connecting piece 81, a second connecting piece 82 and a third connecting piece 83, wherein the first connecting piece 81 and the second connecting piece 82 are arranged in parallel, the center lines of the first connecting piece 81 and the second connecting piece 82 are overlapped, and the third connecting piece 83 is connected between the first connecting piece 81 and the second connecting piece 82; the thickness of the first connecting piece 81 is gradually reduced from the middle to both sides, and the thickness of the second connecting piece 82 is gradually reduced from the middle to both sides, so that both sides of the connecting piece 8 are more easily deformed to be attached to the inner and outer walls of the outer sheath.
A production process of a special-shaped prefabricated heat-insulation pipe fitting comprises the following steps:
flatly placing the lower die 2;
a lower protective shell 5 matched with the lower foaming cavity is placed into the lower foaming cavity of the lower die 2;
the inner pipe 3 is erected on the two upper semicircular holes 13;
the upper protective shell 5 is buckled on the lower protective shell 6;
matching the upper die 1 and the lower die 2 completely and then closing the dies;
injecting polyurethane foaming materials into the foaming cavity through the injection holes 14, wherein the specifications of the prefabricated heat-insulation pipe fittings are different, the using amount of the polyurethane foaming materials is different, and the injection time of the polyurethane foaming materials is adjusted according to the models of the prefabricated heat-insulation pipe fittings to complete foaming;
according to the specifications of different prefabricated heat-insulation pipe fittings, curing is carried out for 10-900 seconds, the upper die 1 is opened, and the molded prefabricated heat-insulation pipe fittings are taken out.
The polyurethane foam material can bond the inner pipe and the outer protecting pipe in the solidification process, according to the actual production situation, when the connecting piece 8 of the embodiment 2 is used for connecting the upper protecting shell 5 and the lower protecting shell 6, the seam of the upper protecting shell 5 and the lower protecting shell 6 of the produced special-shaped prefabricated heat-insulating pipe fitting is covered from the inner part of the outer protecting pipe by the connecting piece 8, although the first connecting piece 81 of the connecting piece 8 can slightly tilt, the overall performance of the outer protecting pipe is not affected, and the first connecting piece 81 can be glued on the inner side of the first connecting piece 81 to be bonded on the outer protecting pipe so as to achieve a better visual effect.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (8)
1. The utility model provides a production mould of prefabricated heat preservation pipe fitting of abnormal shape which characterized in that: comprises an upper die (1), a lower die (2) and an outer protective pipe;
an upper foaming cavity is formed in the lower portion of the upper die (1), a lower foaming cavity is formed in the upper portion of the lower die (2), upper side plates are arranged at two ends of the upper foaming cavity, an upper semicircular hole (13) is formed in the center of the lower portion of the upper side plate, lower side plates are arranged at two ends of the lower foaming cavity, a lower semicircular hole (25) is formed in the center of the lower portion of the lower side plate, when the upper die (1) and the lower die (2) are closed, the upper foaming cavity and the lower foaming cavity form a foaming cavity with a circular cross section, the upper semicircular hole (13) and the lower semicircular hole (25) form an inner tube perforation with a circular cross section, and the foaming cavity and the inner tube perforation are concentric; the upper die (1) is provided with more than one injection hole (14) for injecting polyurethane foaming materials; the upper die (1) and the lower die (2) are closed through a locking device;
the outer pillar includes last protecting crust (5) and lower protecting crust (6) of buckling one-tenth section of thick bamboo each other, the external diameter after going up protecting crust (5) and lower protecting crust (6) lock joint equals the internal diameter of foaming die cavity, go up protecting crust (5) and go up to correspond injection hole (14) are provided with injection via hole (53).
2. The production mold of the special-shaped prefabricated heat-insulation pipe fitting according to claim 1, characterized in that: the locking device comprises upper wings (12) arranged on two sides of the upper die (1), lower wings (22) arranged on two sides of the lower die (2) and fixing bolts (4) used for locking and fixing the upper wings (12) and the lower wings (22).
3. The production mold of the special-shaped prefabricated heat-insulation pipe fitting according to claim 1, characterized in that: go up the long limit both sides downward salient of mould (1) and be provided with location protruding (54), when mould (1) and lower mould (2) close the membrane, location protruding (54) just are located the outside of lower mould (2).
4. The production mold of the special-shaped prefabricated heat-insulation pipe fitting according to claim 1, characterized in that: the upper semicircular hole (13) and the lower semicircular hole (25) are provided with hole walls with certain lengths.
5. The production mold of the special-shaped prefabricated heat-insulation pipe fitting according to claim 1, characterized in that: the lower edge of the upper protective shell (5) is provided with an upper buckling part (51) in a downward protruding mode, the upper edge of the lower protective shell (6) corresponds to the upper buckling part (51) and is provided with a lower buckling part (61), and the upper buckling part (51) is buckled on the outer side of the lower buckling part (61) through an L-shaped clamping plate structure.
6. The production mold of the special-shaped prefabricated heat-insulation pipe fitting according to claim 1, characterized in that: go up protective case (5) with lower protective case (6) are connected through connecting piece (8) of "worker" style of calligraphy, connecting piece (8) are flexible material, the upper portion of connecting piece (8) forms and is used for holding last inserting space (84) of protective case (5) lower limb, the lower part of connecting piece (8) forms and is used for holding lower protective case (6) lower inserting space of going up the border.
7. The production mold of the special-shaped prefabricated heat-insulation pipe fitting according to claim 6, characterized in that: the thickness of the lower edge part of the upper protective shell (5) is gradually reduced downwards to form an upper insertion part (52) which is convenient to be inserted into the upper insertion space (84), and the thickness of the upper edge part of the lower protective shell (6) is gradually reduced upwards to form a lower insertion part (62) which is convenient to be inserted into the lower insertion space.
8. The production mold of the special-shaped prefabricated heat-insulation pipe fitting according to claim 6, characterized in that: the connecting piece (8) comprises a first connecting piece (81), a second connecting piece (82) and a third connecting piece (83), the first connecting piece (81) and the second connecting piece (82) are arranged in parallel, the center lines of the first connecting piece and the second connecting piece are overlapped, and the third connecting piece (83) is connected between the first connecting piece (81) and the second connecting piece (82); the thickness of the first connecting piece (81) is gradually reduced from the middle to two sides, and the thickness of the second connecting piece (82) is gradually reduced from the middle to two sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921386035.8U CN210651562U (en) | 2019-08-23 | 2019-08-23 | Production mould of prefabricated heat preservation pipe fitting of abnormal shape |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921386035.8U CN210651562U (en) | 2019-08-23 | 2019-08-23 | Production mould of prefabricated heat preservation pipe fitting of abnormal shape |
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| CN210651562U true CN210651562U (en) | 2020-06-02 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110394937A (en) * | 2019-08-23 | 2019-11-01 | 河南三杰热电科技股份有限公司 | A kind of production mould and production technology of abnormal shape prefabricated thermal insulation pipe fitting |
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2019
- 2019-08-23 CN CN201921386035.8U patent/CN210651562U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110394937A (en) * | 2019-08-23 | 2019-11-01 | 河南三杰热电科技股份有限公司 | A kind of production mould and production technology of abnormal shape prefabricated thermal insulation pipe fitting |
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