CN209504858U - A kind of injection molding machine with protection barrel function - Google Patents
A kind of injection molding machine with protection barrel function Download PDFInfo
- Publication number
- CN209504858U CN209504858U CN201822226713.6U CN201822226713U CN209504858U CN 209504858 U CN209504858 U CN 209504858U CN 201822226713 U CN201822226713 U CN 201822226713U CN 209504858 U CN209504858 U CN 209504858U
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- Prior art keywords
- sleeve
- barrel
- injection molding
- molding machine
- rod
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model relates to plastic injection molding machine tool fields, disclose a kind of injection molding machine with protection barrel function, including barrel and the screw rod being rotationally connected in barrel, barrel includes control terminal and extruding end, control terminal is set as annular, control-rod is equipped in control terminal, control-rod is pierced into barrel and is fixedly linked with screw rod, sleeve is equipped in barrel, screw rod is rotationally connected in sleeve, sleeve includes the fixed plate of arc, opening is formed between the both ends of fixed plate, the width of opening is greater than the diameter of control-rod, the sealing plate of the arc for blocking opening is slidably connected in opening.Sleeve is extracted out of control terminal, sealing plate is extracted from opening, opening is exposed, and operator pulls sleeve, and control-rod crosses opening, and sleeve takes out out of barrel.New sleeve is put into barrel and replaces by the sleeve more renewed.By the setting of sleeve, after sleeve is worn, operator can replace sleeve, to reduce maintenance cost.
Description
Technical field
The utility model relates to plastic injection molding machine tool field, in particular to a kind of injection molding with protection barrel function
Machine.
Background technique
The barrel of existing injection molding machine is made of hopper, barrel, screw rod, barrel cap.Its basic principle is all by injection mechanism
Raw material is melted and measured, is injected in the mold locked by clamping with certain pressure and speed, after cooling and shaping, is opened
Mould takes out product.
Notification number is that the Chinese patent of CN2616356Y discloses a kind of quick injection molding machine, including rack, oil piping system, control
Mechanism, mold closing mechanism, clamping apparatus, ejecting mechanism, moving template, solid plate and injection device processed；Injection device include nozzle,
Barrel, hopper, feed screw, drive motor and injection cylinder, feed screw are turned in the barrel by the drive motor
Dynamic, injection cylinder is symmetricly set on the two sides of the feed screw, supports injection molding seat and drive motor or the support of the barrel
Anti- curtain coating oil cylinder is equipped between the bracket of drive motor, the cylinder cap of the non-operative end of each injection cylinder is at least a part of
Bright, the cylinder cap is equipped with oil spill pipe.Not only injection moulding speed is fast for the device, saves the energy, but also convenient for quickly investigation failure.
When in use, feed screw rotates in barrel above-mentioned extruder at high temperature.The inner wall of feed screw and barrel
Friction, generating abrasion using material tube inner wall for a long time causes to scrap.Accordingly it is desirable to replace whole barrel, maintenance cost is higher.
Utility model content
The purpose of the utility model is to provide a kind of injection molding machines with protection barrel function, have maintenance cost lower
Advantage.
The above-mentioned technical purpose of the utility model has the technical scheme that
A kind of injection molding machine with protection barrel function, including barrel and the screw rod being rotationally connected in barrel, the material
Cylinder includes control terminal and extruding end, and the control terminal is set as annular, is equipped with control-rod in control terminal, the control-rod pierces into material
It is fixedly linked in cylinder with screw rod, sleeve is equipped in the barrel, the screw rod is rotationally connected in sleeve, and the sleeve includes
The fixed plate of arc forms opening between the both ends of the fixed plate, and the width of the opening is greater than the diameter of control-rod, described
The sealing plate of the arc for blocking opening is slidably connected in opening.
By using above-mentioned technical proposal, sleeve is slidably connected in barrel, and screw rod rotates in sleeve, is used for a long time
Afterwards, the inner wall of sleeve is worn.Sleeve is extracted out of control terminal, sealing plate is extracted from opening, opening is exposed, behaviour
Make personnel and pull sleeve, control-rod crosses opening, and sleeve takes out out of barrel.New sleeve is put into material by the sleeve more renewed
It is replaced in cylinder.By the setting of sleeve, after sleeve is worn, operator can replace sleeve, to reduce dimension
Accomplish this.
Further, the fixed plate is made of several segments fixinig plate, if sealing plate correspondence is divided into dry plate and fixinig plate
The mounting matched, the fixinig plate include the interlude of head section, endpiece and an at least section, interlude be located at head section and endpiece it
Between, described interlude one end is inserted terminal connection sheet with outward extension, and the other end is to be offered and connection sheet phase by spigot
The link slot of cooperation is equipped with connection bolt in the connection sheet, offered on the interlude be connected with link slot with
The connecting hole that connection bolt matches, the end of the head section is identical as by the structure of spigot, the end of the endpiece and grafting
The structure at end is identical.
By using above-mentioned technical proposal, fixed plate is split as multistage, and operator can individually carry out the position of abrasion
Replacement, to further decrease maintenance cost.When replacing interlude, multiple interludes are subjected to grafting, connection sheet insertion connects
It in access slot, and is fastened by connection bolt lock, interlude is fixedly linked with head section and endpiece again and forms the body of rod.Pass through more piece
Each position of the setting of interlude, fixed plate can be split, on the one hand removing convenient for sleeve, on the other hand can be to sleeve
Unitary part replaced, save the cost.
Further, it is circumferentially uniformly provided with the binding groove of several L shapes in the connection sheet, is fixed in the link slot
There is the anchorage bar matched with binding groove.
By using above-mentioned technical proposal, connection sheet is inserted into link slot, and anchorage bar enters in binding groove, is rotatablely connected piece
So that anchorage bar inlay card is in binding groove.Anchorage bar and binding groove mutual cooperation limit the connection of connection sheet and link slot
It is fixed, bonding strength between the two is improved, prevents from loosening.
Further, the end face of the extruding end is equipped with compression ring, and the end face of the extruding end offers the compression of annular
Slot, is fixed with inlay card on the compression ring in the connection ring in pressing groove, the end face of the compression ring offer annular with set
The limiting slot that cylinder matches.
By using above-mentioned technical proposal, compression ring is mounted on extruding end by operator, and connection ring is embedded in pressing groove,
In limiting slot, sleeve is fixed by compression ring, improves the stability of sleeve for the end of sleeve.
Further, there are abrasionproof gap between the sleeve outer wall and material tube inner wall, the end of the compression ring is fixed
There is the elastic clipping strip of protrusion, the elastic clipping strip is set as annular snap in abrasionproof gap.
By using above-mentioned technical proposal, there are gap between sleeve and material tube inner wall, when installation sleeve, sleeve and barrel
Between friction it is smaller, on the one hand be convenient for sleeve insertion, on the other hand material tube inner wall is protected, prevents sleeve wears away material
Cylinder inner wall.When installing connection ring, elastic clipping strip is embedded in abrasionproof gap, and elastic clipping strip is fixed and supports to sleeve, prevents
Sleeve influences discharge in barrel internal vibration.
Further, it is fixed with the gib block of outwardly convex on the material tube inner wall, is offered on the outer wall of the sleeve
The guide groove matched with gib block.
By using above-mentioned technical proposal, sleeve is inserted into barrel, and gib block is in guide groove, gib block and guide groove
Mutual cooperation is defined the position of sleeve, prevents sleeve from the other hand preventing sleeve from existing in the tilted influence discharge of barrel
Rotation influences discharge in barrel.
Further, circular baffle is fixed on the control-rod, the outer diameter of the baffle and the internal diameter of sleeve are equal.
By using above-mentioned technical proposal, baffle is blocked and is protected to the end of sleeve, prevents material out of sleeve
It falls.
Further, the outer end face of the control terminal is rotatably connected to several revolving fragments being circumferentially arranged, the revolving fragment
One end and control terminal are rotatablely connected, and the other end offers rotation mouth, and the end face of the sleeve offers the lock opposite with rotation mouth
Tieholen, the locking hole internal screw thread are connected with clamping screw, and the clamping screw passes through rotation mouth and is threadedly coupled with locking hole.
By using above-mentioned technical proposal, sleeve is embedded in barrel, and the end of sleeve is flushed with the end of control terminal.Rotation
Revolving fragment, so that rotation mouth and locking hole face, clamping screw are inserted into locking hole by rotation mouth, thus by sleeve and rotation
Rotor is fixed, and improves the stability of sleeve.
In conclusion the utility model has the following beneficial effects:
1. after sleeve is worn, operator can replace sleeve by the setting of sleeve, thus reduce maintenance at
This；
2. passing through the setting of more piece interlude, each position of fixed plate can be split, on the one hand taking convenient for sleeve
Under, on the other hand the unitary part of sleeve can be replaced, save the cost.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of embodiment；
Fig. 2 is the structural schematic diagram in embodiment inside barrel；
Fig. 3 is the enlarged diagram in the portion A in Fig. 2；
Fig. 4 is the enlarged diagram in the portion B in Fig. 2；
Fig. 5 is the structural schematic diagram of embodiment middle sleeve.
In figure, 1, barrel；11, control terminal；12, extruding end；121, pressing groove；13, abrasionproof gap；14, gib block；15,
Location hole；2, screw rod；3, control-rod；31, baffle；4, sleeve；41, fixed plate；42, it is open；43, sealing plate；431, mounting；44,
Fixinig plate；441, head section；442, endpiece；443, interlude；4431, inserted terminal；4432, connection sheet；4433, by spigot；4434,
Link slot；4435, bolt is connected；4436, connecting hole；4437, binding groove；44371, translot；44372, vertical slot；4438, it fastens
Bar；45, guide pad；451, guide groove；46, locking hole；47, clamping screw；48, feed inlet；5, compression ring；51, connection ring；
52, limiting slot；53, elastic clipping strip；54, fixation hole；55, fixing bolt；6, revolving fragment；61, mouth is rotated；62, bolt is rotated；7,
Driving motor；8, feed hopper；9, extrusion die.
Specific embodiment
The utility model is described in further detail below in conjunction with attached drawing.
Embodiment:
A kind of injection molding machine with protection barrel function, such as Fig. 1 and Fig. 2, including barrel 1, screw rod 2, driving motor 7 and into
Hopper 8.Barrel 1 includes control terminal 11 and extruding end 12.The end of screw rod 2 is fixed with control-rod 3, and control-rod 3 is from control terminal 11
End stretch out and be fixedly linked with driving motor 7, driving motor 7 starting drive screw rod 2 rotated in barrel 1.Barrel 1 squeezes
Outlet 12 is threaded with the extrusion die 9 of taper, and the end of extrusion die 9 is equipped with internal screw thread, the extruding end 12 of barrel 1 it is outer
Wall is equipped with external screw thread, and extrusion die 9 is threadedly coupled with barrel 1.
Such as Fig. 2, it is equipped with sleeve 4 in barrel 1, sleeve 4 is slidably connected with barrel 1.Screw rod 2 is rotationally connected in sleeve 4
In chamber.Driving motor 7 starts, wall friction in screw rod 2 and sleeve 4,4 inner wall abrasion of sleeve.After long-time use, operator can
Sleeve 4 is extracted out of barrel 1 and is replaced, maintenance cost is reduced.
Such as Fig. 2, sleeve 4 offers feed inlet 48, the lower end of feed hopper 8 and charging above one end of control terminal 11
Mouth 48 is connected.Material from feed hopper 8 enter cross feed inlet 48 after fall into the inner cavity of sleeve 4, screw rod 2 rotation by material to
Extruding end 12 conveys.
Such as Fig. 2, there are abrasionproof gaps 13 between 1 inner wall of 4 outer wall of sleeve and barrel, when being inserted into sleeve 4, sleeve 4 and barrel 1
Friction between inner wall is smaller, and convenient for the insertion of sleeve 4, and sleeve 4 wears smaller, extension barrel 1 caused by 1 inner wall of barrel
Service life.
Such as Fig. 2, it is fixed with the gib block 14 of outwardly convex on 1 inner wall of barrel, is fixed on the outer wall of sleeve 4 and gib block
The guide pad 45 of 14 faces offers the guide groove 451 matched with gib block 14 on guide pad 45.Sleeve 4 is inserted into barrel 1
Interior, gib block 14 is inserted into guide groove 451.Gib block 14 and the mutual cooperation of guide groove 451 are defined sleeve 4, prevent from covering
Cylinder 4 rotates in barrel 1.
Such as Fig. 2 and Fig. 3, the extruding end 12 of barrel 1 is equipped with compression ring 5, and compression ring 5 is fixed sleeve 4, increases
The stability of strong sleeve 4, prevents sleeve 4 from loosening in barrel 1, influences the stability of equipment.
Such as Fig. 3, the end face of compression ring 5 is successively fixed with connection ring 51 and elastic clipping strip 53, the extrusion of barrel 1 within outer
The end face at end 12 offers the pressing groove 121 of annular, and connection ring 51 is embedded in pressing groove 121, and 53 inlay card of elastic clipping strip is in abrasionproof
In gap 13.Elastic clipping strip 53 is filled the distance between sleeve 4 and sleeve 4, to enhance the stability of sleeve 4.
Such as Fig. 3, the limiting slot 52 matched with sleeve 4 is offered on the end face of compression ring 5, compression ring 5 is pressed in extruding end
12 end.Connection ring 51 is embedded in pressing groove 121, in the end insertion limiting slot 52 of sleeve 4.Limiting slot 52 is further to set
Cylinder 4 is fixed, and enhances the stability of sleeve 4.
Such as Fig. 3, barrel 1 is several with 121 phase of pressing groove towards being circumferentially uniformly provided on the outer wall of the end of extruding end 12
The location hole 15 of connection, offers in connection ring 51 and is relatively fixed hole 54 with location hole 15, and 15 internal screw thread of location hole is connected with
Fixing bolt 55.Fixing bolt 55 passes through location hole 15 and is inserted into fixation hole 54.Fixing bolt 55 compress to compression ring 5 solid
It is fixed, improve the stability of compression ring 5.
Such as Fig. 2, control terminal 11 is set as annular, is fixed with circular baffle 31 on control-rod 3.The outer ring of baffle 31 and sleeve
4 inner ring fits, and baffle 31 is blocked and protected to the inner ring of sleeve 4, prevents material leakage from falling.
Such as Fig. 4, the end face of the control terminal 11 of barrel 1 is rotatably connected to revolving fragment 6, and 6 one end of revolving fragment is equipped with rotation spiral shell
Bolt 62, rotation bolt 62 are threadedly coupled with control terminal 11.The other end of revolving fragment 6 offers rotation mouth 61, rotates and wears in mouth 61
Equipped with clamping screw 47, the end face of sleeve 4 offers several locking holes 46 opposite with rotation mouth 61, and clamping screw 47 passes through rotation
Transit 61 is inserted into locking hole 46 and is threadedly coupled with locking hole 46.Sleeve 4 is inserted into barrel 1, rotation bolt 62, rotation are loosened
Revolving fragment 6, rotation mouth 61 is not said in the insertion rotation mouth 61 of clamping screw 47 with 46 face of locking hole to be connected with locking hole 46, again
Clamping screw 47 and rotation bolt 62 are rotated, to be fixedly connected sleeve 4 and barrel 1 by revolving fragment 6.
Such as Fig. 5, sleeve 4 includes the fixed plate 41 and sealing plate 43 of arc, and the opening 42 of arc is offered in fixed plate 41, is opened
Mouthfuls 42 width is greater than control-rod 3(and sees Fig. 2) diameter, sealing plate 43 is slidably connected in opening 42.Sleeve 4 is shown in from barrel 1(
Skid off, sealing plate 43 skidded off out of opening 42, opening 42 is opened wide, and control-rod 3(is shown in Fig. 2 in Fig. 2)) opening 42 is crossed, thus will
Sleeve 4 is removed, and is replaced to sleeve 4, easy to use.
Such as Fig. 5, sleeve 4 is made of several segments, and sleeve 4 can be shown in Fig. 2 from control-rod 3(paragraph by paragraph) on remove, facilitate sleeve 4
It removes, in sleeve 4 when the abrasion of certain section, which can individually be replaced, save the cost.
Such as Fig. 5, fixed plate 41 is made of several segments fixinig plate 44, if sealing plate 43 is corresponding to be divided into dry plate and the matching of fixinig plate 44
The mounting 431 of conjunction.
Such as Fig. 5, fixinig plate 44 includes head section 441, interlude 443 and endpiece 442, and interlude 443 is at least provided with a section.It is more
Fixinig plate 44 is split as multistage by a interlude 443, to replace to independent interlude 443.
Such as Fig. 5, it is to be inserted towards the end of endpiece 442 that interlude 443, which is inserted terminal 4431 towards the end of head section 441,
End 4433.It inserted terminal 4431 and is cooperated by spigot 4433, when multiple interludes 443 are attached, inserted terminal 4431 is inserted into
By in spigot 4433.
Such as Fig. 5, it is fixed with outwardly extending connection sheet 4432 at inserted terminal 4431, is opened up by the end face of spigot 4433 oriented
The link slot 4434 of sunken inside, connection sheet 4432 can be inserted into link slot 4434.Connection bolt is equipped in connection sheet 4432
4435, the connecting hole 4436 being connected with link slot 4434 is offered by the side of spigot 4433.It connects bolt 4435 and passes through and connect
It connects hole 4436 to be connected with connection sheet 4432, to will be fixedly connected by spigot 4433 and inserted terminal 4431, prevents from loosening.
Such as Fig. 5, the binding groove 4437 of multiple L shapes is circumferentially uniformly provided in connection sheet 4432, binding groove 4437 includes
The end of translot 44371 and vertical slot 44372, vertical slot 44372 is connected to the end of connection sheet 4432, is fixed in link slot 4434
With the mutually matched anchorage bar 4438 of binding groove 4437.Connection sheet 4432 is inserted into link slot 4434, and the insertion of anchorage bar 4438 is perpendicular
In slot 44372 until with the bottom of vertical slot 44372 contradict with 44371 face of translot, be rotatablely connected piece 4432, anchorage bar 4438 is inserted
Enter in translot 44371, binding groove 4437 and anchorage bar 4438 cooperate, and enhance the connection of connection sheet 4432 and link slot 4434
Intensity.
Specific implementation process: material from feed hopper 8 enter sleeve 4 in, driving motor 7 start, screw rod 2 rotate, material from
It is discharged in extrusion die 9.It uses for a long time, after 4 inner wall abrasion of sleeve, extrusion die 9 is screwed off, compression ring 5 is removed.It will lock
Tight bolt 47 screws out, and sleeve 4 is extracted out of barrel 1, is replaced to worn-out cartridge unit, is again inserted into sleeve 4 and expects
In cylinder 1, it is fixed by compression ring 5 and revolving fragment 6.
This specific embodiment is only the explanation to the utility model, is not limitations of the present invention, ability
Field technique personnel can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but
As long as all by the protection of Patent Law in the scope of the claims of the utility model.
Claims (8)
1. a kind of injection molding machine with protection barrel function, including barrel (1) and the screw rod (2) being rotationally connected in barrel (1),
It is characterized by: the barrel (1) includes control terminal (11) and extruding end (12), the control terminal (11) is set as annular, control
It is equipped with control-rod (3) in end (11), the control-rod (3) pierces into barrel (1) and is fixedly linked with screw rod (2), the barrel
(1) it is equipped with sleeve (4) in, the screw rod (2) is rotationally connected in sleeve (4), and the sleeve (4) includes the fixed plate of arc
(41), opening (42) is formed between the both ends of the fixed plate (41), the width of the opening (42) is greater than the straight of control-rod (3)
Diameter, the interior sealing plate (43) for slidably connecting the arc for blocking opening (42) of opening (42).
2. a kind of injection molding machine with protection barrel function according to claim 1, it is characterised in that: the fixed plate
(41) it is made of several segments fixinig plate (44), the sealing plate (43) is if correspondence is divided into the mounting that dry plate is matched with fixinig plate (44)
(431), the fixinig plate (44) includes the interlude (443) of head section (441), endpiece (442) and an at least section, interlude
(443) between head section (441) and endpiece (442), described interlude (443) one end is that inserted terminal (4431) are equipped with to extension
The connection sheet (4432) stretched, the other end are to offer the link slot matched with connection sheet (4432) by spigot (4433)
(4434), it is equipped with connection bolt (4435) on the connection sheet (4432), offers on the interlude (443) and link slot
(4434) being connected with connecting hole (4436) that is connecting bolt (4435) and match, the end of the head section (441) with inserted
Hold the structure of (4433) identical, the end of the endpiece (442) is identical as the structure of inserted terminal (4431).
3. a kind of injection molding machine with protection barrel function according to claim 2, it is characterised in that: the connection sheet
(4432) it is circumferentially uniformly provided with the binding groove (4437) of several L shapes on, is fixed with and fastens in the link slot (4434)
The anchorage bar (4438) that slot (4437) matches.
4. a kind of injection molding machine with protection barrel function according to claim 1, it is characterised in that: the extruding end
(12) end face is equipped with compression ring (5), and the end face of the extruding end (12) offers the pressing groove (121) of annular, the compression
Inlay card is fixed on ring (5) in the connection ring (51) in pressing groove (121), the end face of the compression ring (5) offers annular
The limiting slot (52) matched with sleeve (4).
5. a kind of injection molding machine with protection barrel function according to claim 4, it is characterised in that: the sleeve (4)
There are abrasionproof gap (13) between outer wall and barrel (1) inner wall, the end of the compression ring (5) is fixed with the elastic clipping strip of protrusion
(53), the elastic clipping strip (53) is set as annular snap in abrasionproof gap (13).
6. a kind of injection molding machine with protection barrel function according to claim 1, it is characterised in that: the barrel (1)
It is fixed with the gib block (14) of outwardly convex on inner wall, offers on the outer wall of the sleeve (4) and is matched with gib block (14)
Guide groove (451).
7. a kind of injection molding machine with protection barrel function according to claim 1, it is characterised in that: the control-rod
(3) it is fixed on circular baffle (31), the outer diameter of the baffle (31) is equal with the internal diameter of sleeve (4).
8. a kind of injection molding machine with protection barrel function according to claim 1, it is characterised in that: the control terminal
(11) outer end face is rotatably connected to several revolving fragments (6) being circumferentially arranged, and described revolving fragment (6) one end and control terminal (11) turn
Dynamic connection, the other end offer rotation mouth (61), and the end face of the sleeve (4) offers the locking hole opposite with rotation mouth (61)
(46), locking hole (46) internal screw thread is connected with clamping screw (47), the clamping screw (47) pass through rotation mouth (61) with
Locking hole (46) is threadedly coupled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822226713.6U CN209504858U (en) | 2018-12-27 | 2018-12-27 | A kind of injection molding machine with protection barrel function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822226713.6U CN209504858U (en) | 2018-12-27 | 2018-12-27 | A kind of injection molding machine with protection barrel function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209504858U true CN209504858U (en) | 2019-10-18 |
Family
ID=68197877
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822226713.6U Expired - Fee Related CN209504858U (en) | 2018-12-27 | 2018-12-27 | A kind of injection molding machine with protection barrel function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209504858U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111113829A (en) * | 2019-12-25 | 2020-05-08 | 珠海格力智能装备有限公司 | Machine barrel and injection molding machine |
| CN116100777A (en) * | 2023-04-12 | 2023-05-12 | 河北聚丰华春保温材料有限公司 | Extrusion equipment for forming anti-corrosion pipeline |
-
2018
- 2018-12-27 CN CN201822226713.6U patent/CN209504858U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111113829A (en) * | 2019-12-25 | 2020-05-08 | 珠海格力智能装备有限公司 | Machine barrel and injection molding machine |
| CN116100777A (en) * | 2023-04-12 | 2023-05-12 | 河北聚丰华春保温材料有限公司 | Extrusion equipment for forming anti-corrosion pipeline |
| CN116100777B (en) * | 2023-04-12 | 2023-06-09 | 河北聚丰华春保温材料有限公司 | Extrusion equipment for forming anti-corrosion pipeline |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191018 Termination date: 20201227 |