CN107260548B - Coating drum inlet and outlet mechanism for spray gun mounting rack of replaceable drum type coating machine - Google Patents

Coating drum inlet and outlet mechanism for spray gun mounting rack of replaceable drum type coating machine Download PDF

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Publication number
CN107260548B
CN107260548B CN201710693648.5A CN201710693648A CN107260548B CN 107260548 B CN107260548 B CN 107260548B CN 201710693648 A CN201710693648 A CN 201710693648A CN 107260548 B CN107260548 B CN 107260548B
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China
Prior art keywords
spray gun
drum
gun mounting
front opening
mounting rack
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CN201710693648.5A
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CN107260548A (en
Inventor
王孟刚
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Nano Pharm Tech Machinery Equipment Co ltd
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Nano Pharm Tech Machinery Equipment Co ltd
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61JCONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
    • A61J3/00Devices or methods specially adapted for bringing pharmaceutical products into particular physical or administering forms
    • A61J3/005Coating of tablets or the like
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61JCONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
    • A61J3/00Devices or methods specially adapted for bringing pharmaceutical products into particular physical or administering forms
    • A61J3/06Devices or methods specially adapted for bringing pharmaceutical products into particular physical or administering forms into the form of pills, lozenges or dragees
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

Abstract

A spray gun mounting rack in-out coating drum mechanism of a replaceable drum type coating machine relates to a spray gun mounting rack in-out coating drum mechanism. The invention aims to solve the problem that a spray gun mounting frame of a coating machine and a mode that a spray gun mounted on the spray gun mounting frame enters and exits a coating drum in the prior art cannot be suitable for a replaceable drum type coating machine. The front door (2) is installed on a machine body (1), a feed inlet (3) is formed in the front door (2), a front opening ring (4) is cylindrical, a first hinged base (5) is installed on one side of the front wall of the machine body (1), a second hinged base (6) is installed on the outer side wall of the front opening ring (4), two ends of a first connecting rod (7) are hinged to the first hinged base (5) and the second hinged base (6) respectively, one end of a supporting rod (8) is installed on the inner side wall of the front opening ring (4), and the other end of the supporting rod (8) is detachably matched and connected with a spray gun installation frame (9). The invention is used for the replaceable drum type coating machine.

Description

Coating drum inlet and outlet mechanism for spray gun mounting rack of replaceable drum type coating machine
Technical Field
The invention relates to a mechanism for a spray gun mounting rack to enter and exit a coating drum, in particular to a mechanism for a spray gun mounting rack to enter and exit the coating drum of a replaceable drum type coating machine.
Background
In the prior art, the spray gun mounting frame of the coating machine and the mode of the spray gun mounted on the spray gun mounting frame to enter and exit the coating drum mostly adopt the mode of pushing in or pulling out along the axial direction of the coating drum, and the mode is only suitable for the common drum-type coating machine and is not suitable for the coating machine with the replaceable coating drum. Be equipped with the qianmen that supplies the coating drum business turn over organism on interchangeable drum-type coating machine's the antetheca, only when the qianmen is opened, just can carry out the change of coating drum, and the spray gun mounting bracket of adopting above-mentioned mode and the spray gun of installing on it still lie in the front end of coating machine after pulling out the coating drum, will block opening of qianmen when being applied to interchangeable drum-type coating machine, cause the change of unable realization coating drum. In addition, by adopting the mode, when the spray gun mounting frame and the spray gun mounted on the spray gun mounting frame are pulled out of the coating roller, a large enough operating space needs to be reserved at the front end of the coating machine, the area of a production purification room is increased invisibly, and the production cost is increased.
Therefore, the spray gun mounting rack of the coating machine and the mode of the spray gun mounted on the spray gun mounting rack to enter and exit the coating drum in the prior art cannot be suitable for the replaceable drum type coating machine.
Disclosure of Invention
The invention aims to solve the problem that a spray gun mounting frame of a coating machine and a mode of a spray gun mounted on the spray gun mounting frame to enter and exit a coating drum in the prior art cannot be suitable for a replaceable drum type coating machine. Further provides a mechanism for the spray gun mounting rack to enter and exit the coating drum of the replaceable drum type coating machine.
The technical scheme of the invention is as follows:
the utility model provides a spray gun mounting bracket business turn over capsule cylinder mechanism of interchangeable drum-type capsule machine includes capsule machine's organism, still includes qianmen, feed inlet, front bezel, first articulated base, the articulated base of second, first connecting rod, bracing piece and spray gun mounting bracket, the qianmen is installed on the antetheca of organism, the feed inlet is seted up on the qianmen, the front bezel is the tube-shape, first articulated base fixed mounting be in one side of the antetheca of organism, the articulated base fixed mounting of second is in on the lateral wall of front bezel, the one end of first connecting rod with first articulated base is articulated, the other end with the articulated base of second is articulated, the cross-section size and the mounted position of front bezel with the size and the position of feed inlet cooperate, the one end fixed mounting of bracing piece be in on the inside wall of front bezel, the other end with the spray gun mounting bracket can dismantle the cooperation and connect.
Preferably, the first connecting rod, the second hinged base, the supporting rod and the spray gun mounting frame are of hollow structures, and a gas-liquid pipeline channel of the spray gun is formed.
Furthermore, the mechanism for enabling the spray gun mounting frame of the replaceable drum-type coating machine to enter and exit the coating drum further comprises a first locking device, a first annular edge extending outwards in the radial direction is arranged at the rear end of the front opening ring, and the first locking device matched with the first annular edge is arranged on the outer wall of the front door.
Furthermore, the mechanism for the spray gun mounting rack to enter and exit the coating drum of the replaceable drum-type coating machine further comprises a first sealing ring, and the first sealing ring is arranged on the part, matched with the front door, of the front opening ring.
Usually, the mechanism for enabling the spray gun mounting rack of the replaceable drum type coating machine to enter and exit the coating drum further comprises an observation window, the observation window is hinged to the front end of the front opening ring, and the size of the observation window is matched with the size of the cross section of the front opening ring.
Furthermore, the mechanism for enabling the spray gun mounting frame of the replaceable drum-type coating machine to enter and exit the coating drum further comprises a second locking device and a second sealing ring, a second annular edge extending outwards in the radial direction is arranged at the front end of the front opening ring, the second locking device matched with the second annular edge is arranged on the observation window, and the second sealing ring is arranged on the part, matched with the front opening ring, of the observation window.
The mechanism for enabling the spray gun mounting frame of the replaceable drum-type coating machine to enter and exit the coating drum usually further comprises a discharging barrel, the bottom of the side wall of the front opening ring is communicated with the discharging barrel, and a discharging valve is installed at the bottom end of the discharging barrel.
Preferably, the mechanism for enabling the spray gun mounting rack of the replaceable drum-type coating machine to enter and exit the coating drum further comprises a second connecting rod, one end of the second connecting rod is fixedly connected with the front door, and the other end of the second connecting rod is hinged to the first hinged base.
Further, the mechanism for enabling the spray gun mounting rack of the replaceable drum type coating machine to enter and exit the coating drum further comprises a third locking device, and the edge of the front door and the front wall of the machine body are provided with the third locking device which is matched with each other.
Furthermore, the mechanism for the spray gun mounting rack to enter and exit the coating drum of the replaceable drum-type coating machine further comprises a third sealing ring, and the third sealing ring is mounted on the part, matched with the front wall of the machine body, of the front door.
Compared with the prior art, the invention has the following effects:
1. the invention can conveniently pull out the spray gun mounting rack and the spray gun mounted on the spray gun mounting rack from the coating drum and rotate to one side of the machine body 1, thereby not occupying the space at the front end of the machine body 1, not influencing the opening of the front door 2 and the replacement of the coating drum when being applied to a replaceable drum type coating machine, and being beneficial to the maintenance, overhaul, replacement, adjustment and other operations of the coating drum and the internal components of the machine body 1;
2. according to the invention, because the spray gun mounting frame 9 pulled out from the coating drum and the spray gun mounted on the spray gun mounting frame can be rotated to one side of the machine body 1, compared with the mode adopted in the prior art, the space requirement on the front end of the machine body 1 of the coating machine is small, the area of a production purification room can be reduced, and the production cost is reduced;
3. according to the invention, the gas-liquid pipeline of the spray gun arranged on the spray gun mounting rack 9 can be arranged in the channel of the hollow part of the first connecting rod 7, the second hinged base 6 supporting rod 8 and the spray gun mounting rack 9, the hidden line layout of the pipeline is more reasonable, the spray gun mounting rack 9 and the spray gun arranged on the spray gun mounting rack 9 are convenient to detach, replace, maintain, overhaul and clean, and the situation that the gas-liquid pipeline blocks the spray path of the spray gun and further influences the coating production effect can be avoided;
4. according to the invention, the second connecting rod 16 is hinged with the first hinged base 5, and two ends of the first connecting rod 7 are hinged with the first hinged base 5 and the second hinged base 6 respectively, so that the spray gun mounting frame 9 and the spray gun mounted on the spray gun mounting frame can have at most three rotating opportunities in the process of being pulled out of the coating drum and rotating to one side of the machine body 1, and the spray gun mounting frame 9 and the spray gun mounted on the spray gun mounting frame can be pulled out of the coating drum easily and rotate, and are not easy to collide with the edge of the feed port 3 or the front wall of the machine body 1 to cause damage;
5. the first, second and third locking devices are matched with the first, second and third sealing rings, so that the sealing between the front opening ring 4 and the front door 2, the sealing between the observation window 13 and the front opening ring 4 and the sealing between the front door 2 and the front wall of the machine body 1 can be effectively ensured, and the safe coating production of materials is ensured.
Drawings
FIG. 1 is a front view of the coating machine of the present invention; FIG. 2 is a schematic illustration of the small angle opening of the front bezel 4 of the present invention; FIG. 3 is a schematic view of the wide angle opening of the front bezel 4; fig. 4 is a schematic view of the front bezel 4 and the front door 2 being opened simultaneously.
Detailed Description
The first specific implementation way is as follows: the present embodiment is described with reference to fig. 1, 2, 3 and 4, and includes a body 1 of a coating machine, and further includes a front door 2, a feed port 3, a front opening ring 4, a first hinge base 5, a second hinge base 6, a first link 7, a support rod 8 and a spray gun mounting frame 9, wherein the front door 2 is mounted on a front wall of the body 1 and is generally circular, the feed port 3 is opened on the front door 2 and is generally opened at a central position of the front door 2, the feed port 3 is sized and positioned corresponding to a size and a position of a nozzle of a coating drum located in the body 1, the front opening ring 4 is tubular with two open ends, the first hinge base 5 is fixedly mounted on one side of the front wall of the body 1, the second hinge base 6 is fixedly mounted on an outer side wall of the front opening ring 4 and is generally mounted on a top end of the outer side wall of the front opening ring 4, one end of the first link 7 is hinged to the first hinge base 5, the other end is hinged to the second hinge base 6, so that the front opening ring 4 can be rotatably mounted along the first hinge base 5, the front opening side wall of the front opening ring 4 and the support rod can be rotatably mounted on the front opening ring 4, and the front opening side of the front opening ring 4, and the front opening ring mounting frame can be rotatably mounted on the front side of the front opening ring 2, the spray gun mounting frame 4 and the front opening is rotatably mounted on the front side wall, and the front side wall of the front opening ring mounting frame 4, the front side wall of the front opening frame 4, and the front side wall of the front opening frame 4, and the front frame 4.
This embodiment can conveniently pull out the spray gun mounting bracket 9 and the spray gun of installing on it from the capsule cylinder and rotate to one side of organism 1 to do not occupy the space of organism 1 front end, when being applied to interchangeable drum-type capsule machine, do not influence opening of qianmen 2 and the change to the capsule cylinder, still be favorable to operations such as maintenance, change, adjustment of capsule cylinder and organism 1 internals.
Because can rotate the spray gun mounting bracket 9 that pulls out from the coating drum and the spray gun of installing on it to one side of organism 1, compare the mode that prior art adopted, it is little to the space requirement of the organism 1 front end of coating machine, can reduce the area of production clean room, reduction in production cost.
The second embodiment is as follows: referring to fig. 4, the first link 7, the second hinge base 6, the support rod 8, and the lance mounting bracket 9 of the present embodiment are hollow structures, and form a gas-liquid line passage of the lance. The part of the front opening ring 4 connected with the second hinged base 6 can be provided with a through hole for a gas-liquid pipeline to pass through. The gas-liquid pipeline of the spray gun of the embodiment can be arranged in the channel of the hollow part of the first connecting rod 7, the second hinged base 6, the supporting rod 8 and the spray gun mounting rack 9, the hidden line layout of the pipeline is more reasonable, the spray gun mounting rack 9 and the spray gun mounted on the spray gun mounting rack 9 can be conveniently detached, replaced, maintained and cleaned, and the situation that the gas-liquid pipeline blocks the spraying path of the spray gun and further influences the coating production effect can be avoided. Other components and connections are the same as in the first embodiment.
The third concrete implementation mode: the embodiment is described with reference to fig. 1, fig. 2, fig. 3 and fig. 4, and the embodiment further includes a first locking device 10, a first annular edge 11 extending radially outward is provided at the rear end of the front bezel 4, and the first locking device 10 matching with the first annular edge 11 is provided on the outer wall of the front door 2. The first locking device 10 is usually a rotatable arc-shaped stopper, a rotation handle is mounted on the stopper, when the front opening ring 4 is rotated to a position tightly attached to the front door 2, the stopper is rotated to be pressed on the front side wall of the first annular edge 11, so that the front opening ring 4 and the front door 2 can be locked relatively, and the stopper is rotated in a locking state to be staggered with the first annular edge 11, so that the front opening ring 4 can be opened relative to the front door 2. In order to ensure that the relative locking state of the front opening ring 4 and the front door 2 is firmer, the number of the first locking devices 10 can be two or more, and the first locking devices are symmetrically arranged around the feeding opening 3. Other compositions and connections are the same as in the first or second embodiments.
The fourth concrete implementation mode: the present embodiment is described with reference to fig. 3, and the present embodiment further includes a first sealing ring 12, and the first sealing ring 12 is installed on the portion of the front mouth ring 4, which is matched with the front door 2, to ensure that the two are tightly attached and sealed after being locked by the first locking device 10. Usually the first sealing ring 12 is mounted on the first annular rim 11. Other compositions and connection relationships are the same as in the first, second or third embodiment.
The fifth concrete implementation mode is as follows: the embodiment is described with reference to fig. 1 and 2, and further comprises an observation window 13 for facilitating observation of the coating production condition in the coating drum, wherein the observation window 13 is hinged to the front end of the front bezel 4, and the size of the observation window 13 is matched with the size of the cross section of the front bezel 4. Other compositions and connection relationships are the same as those in the first, second, third, or fourth embodiment.
The sixth specific implementation mode is as follows: the embodiment is described with reference to fig. 1, fig. 2, fig. 3 and fig. 4, and the embodiment further includes a second locking device 14 and a second sealing ring, a second annular edge extending radially outward is disposed at the front end of the front bezel 4, a second locking device 14 matched with the second annular edge is disposed on the observation window 13, the second locking device 14 is generally a rotatable arc-shaped stopper, a rotation handle is mounted on the stopper, when the observation window 13 is rotated to a position close to the front bezel 4, the stopper is rotated to be pressed on the rear side wall of the second annular edge, so that the observation window 13 and the front bezel 4 can be locked relatively, and when the stopper is rotated in a locked state, so that the stopper is staggered from the second annular edge, so that the observation window 13 can be opened relative to the front bezel 4. And a second sealing ring is arranged on the part of the observation window 13 matched with the front opening ring 4 so as to ensure that the observation window and the front opening ring are tightly attached and sealed after being locked by the second locking device 14. Other compositions and connection relationships are the same as in the first, second, third, fourth or fifth embodiment.
The seventh concrete implementation mode: the embodiment is described with reference to fig. 1, fig. 2, fig. 3 and fig. 4, and the embodiment further includes a discharge barrel 15, the bottom of the side wall of the front opening ring 4 is communicated with the discharge barrel 15 for discharging after coating production is completed, and a discharge valve is installed at the bottom end of the discharge barrel 15 for facilitating control. Other compositions and connection relations are the same as those of the first embodiment, the second embodiment, the third embodiment, the fourth embodiment, the fifth embodiment or the sixth embodiment.
The specific implementation mode is eight: the present embodiment is described with reference to fig. 1, fig. 2, fig. 3 and fig. 4, and the present embodiment further includes a second link 16, where one end of the second link 16 is fixedly connected to the front door 2, and the other end is hinged to the first hinge base 5, so that the front door 2 can be opened by rotating along the first hinge base 5. Because the second connecting rod 16 is hinged with the first hinged base 5, and the first connecting rod 7 is hinged with the first hinged base 5 and the second hinged base 6, the spray gun mounting frame 9 and the spray gun mounted on the spray gun mounting frame can be pulled out of the coating drum and rotated to one side of the machine body 1 at most three rotating opportunities can be possessed, so that the spray gun mounting frame 9 and the spray gun mounted on the spray gun mounting frame can be easily pulled out of the coating drum and rotated, and the spray gun is not easy to collide with the edge of the feed port 3 or the front wall of the machine body 1 to cause damage. Other compositions and connection relationships are the same as those of embodiment one, two, three, four, five, six or seven.
The specific implementation method nine: the present embodiment is described with reference to fig. 1, fig. 2, fig. 3 and fig. 4, and the present embodiment further includes a third locking device, and a third locking device is mounted on the edge of the front door 2 and the front wall of the machine body 1 to cooperate with each other. The third locking device generally comprises a blocking piece 17 mounted on the front door 2 and a rotatable arc-shaped blocking piece 18 mounted on the front wall of the machine body 1 in a matched mode, a rotating handle is mounted on the blocking piece, the blocking piece 17 corresponds to the blocking piece in position, when the front door 2 is rotated to be tightly attached to the front wall of the machine body 1, the blocking piece is rotated to be pressed on the front side wall of the blocking piece 17, the front door 2 and the front wall of the machine body 1 can be locked relatively, and the blocking piece is rotated in a locking state to be staggered with the blocking piece 17, so that the front door 2 can be opened relative to the front wall of the machine body 1. Other compositions and connection relationships are the same as those in the first, second, third, fourth, fifth, sixth, seventh or eighth embodiment.
The specific implementation mode is ten: the front door 2 and the front wall of the machine body 1 are matched with each other, the third sealing ring is installed on the matched position of the front door 2 and the front wall of the machine body 1, so that the front door and the front wall are tightly attached and sealed after being locked by the third locking device, and the third sealing ring is usually an inflatable sealing ring. Other compositions and connection relations are the same as those of the first, second, third, fourth, fifth, sixth, seventh, eighth or ninth specific embodiment.

Claims (9)

1. The utility model provides a spray gun mounting bracket business turn over capsule cylinder mechanism of interchangeable drum-type coating machine, it includes organism (1) of coating machine, its characterized in that: it also comprises a front door (2), a feed inlet (3), a front opening ring (4), a first hinged base (5), a second hinged base (6), a first connecting rod (7), a supporting rod (8) and a spray gun mounting rack (9),
the front door (2) is installed on the front wall of the machine body (1), the feed inlet (3) is formed in the front door (2), the front opening ring (4) is cylindrical, the first hinged base (5) is fixedly installed on one side of the front wall of the machine body (1), the second hinged base (6) is fixedly installed on the outer side wall of the front opening ring (4), one end of the first connecting rod (7) is hinged to the first hinged base (5), the other end of the first connecting rod (7) is hinged to the second hinged base (6), the size and the installation position of the cross section of the front opening ring (4) are matched with the size and the position of the feed inlet (3), one end of the supporting rod (8) is fixedly installed on the inner side wall of the front opening ring (4), and the other end of the supporting rod (8) is detachably matched and connected with the spray gun installation frame (9); the first connecting rod (7), the second hinged base (6), the supporting rod (8) and the spray gun mounting rack (9) are of hollow structures, and a gas-liquid pipeline channel of the spray gun is formed.
2. The coating drum in and out mechanism of a spray gun mounting rack of a replaceable drum type coating machine as claimed in claim 1, wherein: the front door locking device further comprises a first locking device (10), a first annular edge (11) extending outwards in the radial direction is arranged at the rear end of the front opening ring (4), and the first locking device (10) matched with the first annular edge (11) is arranged on the outer wall of the front door (2).
3. The mechanism for moving a spray gun mounting rack into and out of a coating drum of a replaceable drum type coating machine as claimed in claim 2, wherein: the novel door lock further comprises a first sealing ring (12), and the first sealing ring (12) is installed on the part, matched with the front door (2), of the front opening ring (4).
4. The mechanism for moving a spray gun mounting rack into and out of a coating drum of a replaceable drum type coating machine as claimed in claim 3, wherein: the novel front opening ring is characterized by further comprising an observation window (13), wherein the observation window (13) is hinged to the front end of the front opening ring (4), and the size of the observation window (13) is matched with the size of the section of the front opening ring (4).
5. The mechanism for moving a spray gun mounting rack into and out of a coating drum of a replaceable drum type coating machine as claimed in claim 4, wherein: it also comprises a second locking device (14) and a second sealing ring,
the front end of the front opening ring (4) is provided with a second annular edge extending outwards in the radial direction, the observation window (13) is provided with a second locking device (14) matched with the second annular edge, and a second sealing ring is installed on the part, matched with the front opening ring (4), of the observation window (13).
6. The mechanism for moving a spray gun mounting rack into and out of a coating drum of a replaceable drum type coating machine as claimed in claim 5, wherein: the automatic feeding device also comprises a discharging barrel (15), the bottom of the side wall of the front opening ring (4) is communicated with the discharging barrel (15), and a discharging valve is installed at the bottom end of the discharging barrel (15).
7. The mechanism for moving a spray gun mounting rack into and out of a coating drum of a convertible drum type coating machine according to claim 1, 2, 3, 4, 5 or 6, wherein: the front door hinge structure further comprises a second connecting rod (16), one end of the second connecting rod (16) is fixedly connected with the front door (2), and the other end of the second connecting rod (16) is hinged with the first hinge base (5).
8. The mechanism for moving a gun mount of a replaceable drum type coating machine into and out of a coating drum as claimed in claim 7, wherein: the novel multifunctional door lock also comprises a third locking device, and the edge of the front door (2) and the front wall of the machine body (1) are provided with the third locking device which is matched with each other.
9. The mechanism for moving a spray gun mounting rack into and out of a coating drum of a replaceable drum type coating machine as claimed in claim 8, wherein: the novel multifunctional clothes hanger further comprises a third sealing ring, and the third sealing ring is installed on the matched part of the front door (2) and the front wall of the hanger body (1).
CN201710693648.5A 2017-08-14 2017-08-14 Coating drum inlet and outlet mechanism for spray gun mounting rack of replaceable drum type coating machine Active CN107260548B (en)

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