CN113320069A - Extrusion forming equipment for preparing plastic bottle caps - Google Patents

Extrusion forming equipment for preparing plastic bottle caps Download PDF

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Publication number
CN113320069A
CN113320069A CN202110610174.XA CN202110610174A CN113320069A CN 113320069 A CN113320069 A CN 113320069A CN 202110610174 A CN202110610174 A CN 202110610174A CN 113320069 A CN113320069 A CN 113320069A
Authority
CN
China
Prior art keywords
carousel
feeding
live
rollers
rotating disc
Prior art date
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.)
Pending
Application number
CN202110610174.XA
Other languages
Chinese (zh)
Inventor
林艺宾
朱日金
卢子臻
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhangzhou Shengming Industry And Trade Co ltd
Original Assignee
Zhangzhou Shengming Industry And Trade Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Zhangzhou Shengming Industry And Trade Co ltd filed Critical Zhangzhou Shengming Industry And Trade Co ltd
Priority to CN202110610174.XA priority Critical patent/CN113320069A/en
Publication of CN113320069A publication Critical patent/CN113320069A/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • B29C43/04—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles using movable moulds
    • B29C43/06—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles using movable moulds continuously movable in one direction, e.g. mounted on chains, belts
    • B29C43/08—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles using movable moulds continuously movable in one direction, e.g. mounted on chains, belts with circular movement, e.g. mounted on rolls, turntables
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/34—Feeding the material to the mould or the compression means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/36—Moulds for making articles of definite length, i.e. discrete articles
    • B29C43/42—Moulds for making articles of definite length, i.e. discrete articles for undercut articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/50—Removing moulded articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/34—Feeding the material to the mould or the compression means
    • B29C2043/3405—Feeding the material to the mould or the compression means using carrying means
    • B29C2043/3427—Feeding the material to the mould or the compression means using carrying means hopper, vessel, chute, tube, conveying screw, for material in discrete form, e.g. particles or powder or fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/34—Feeding the material to the mould or the compression means
    • B29C2043/3466—Feeding the material to the mould or the compression means using rotating supports, e.g. turntables or drums
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/56—Stoppers or lids for bottles, jars, or the like, e.g. closures

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

The utility model provides an extrusion equipment for preparing plastics bottle lid, it relates to an extrusion equipment, it contains the base, the top of base is equipped with left stand, be equipped with the motor on the stand of a left side, connect the live-rollers in the pivot of motor, be equipped with four carousels on the live-rollers, the live-rollers below is equipped with the collecting box, the right side of live-rollers is equipped with the feed table, be equipped with the mold core on the surface of feed table, the feed table is the cavity shape, and inside is equipped with the conveying pipe, the feeding hose is connected to the lower extreme of conveying pipe, raw material tank is connected to the lower extreme of feeding hose, the right side of feed table is equipped with electric cylinder, electric cylinder's right side is equipped with right stand, the left side of right stand is equipped with the control box, it has the characteristics that pay-off is efficient and the pay-off volume is easily controlled, the integrated production to plastics bottle lid has been realized.

Description

Extrusion forming equipment for preparing plastic bottle caps
Technical Field
The invention relates to the related field of extruders, in particular to extrusion forming equipment for preparing plastic bottle caps.
Background
The plastic cover is a common packaging form of the prior bottle, can and barrel packaging, and is particularly widely applied in the fields of beverages, chemical industry and medicines. At present, the bottle lid that current bottle lid automatic production device will produce is stacked together, extrudees the bottle lid deformation like this easily, reduces the qualification rate, when needs arrangement bottle lid, needs the manpower to put into the standing groove with the bottle lid, wastes time and energy, influences machining efficiency.
Disclosure of Invention
The invention aims to overcome the defects and shortcomings of the prior art, and provides extrusion forming equipment for preparing plastic bottle caps, which utilizes electrodes to drive a rotary table positioned on a rotary roller, wherein a mold cavity is arranged on the rotary table, a feed table corresponding to the mold cavity is arranged right opposite to the rotary table, a mold core on the feed table is used as an extrusion device on the mold cavity, the feed table realizes extrusion action through the stretching of an electric cylinder, and finally, the molded plastic bottle caps fall into a mobile phone box under the action of gravity through the rotation of the electrodes and are replaced by the rotary table to be molded in situ, so that the circular operation is realized, and the integrated production of the plastic bottle caps is realized.
In order to achieve the purpose, the invention adopts the following technical scheme that the extrusion forming equipment for preparing the plastic bottle cap comprises a base 1, a left upright post 2 is arranged above the base 1, a motor 3 is arranged on the left upright post 2, a rotating roller 4 is connected on a rotating shaft of the motor 3, a first rotating disc 5 is arranged on the left side of the rotating roller 4, a third rotating disc 7 is arranged on the right side of the rotating roller 4, a second rotating disc 6 is arranged above the rotating roller 4, a fourth rotating disc 8 is arranged below the rotating roller 4, the first rotating disc 5, the second rotating disc 6, the third rotating disc 7 and the fourth rotating disc 8 are symmetrically arranged by taking the central line of the rotating roller 4 as an axis, a mold cavity 5-1 is arranged on the outer surface of the first rotating disc 5, the number of mold cores is 6-8, and the structures of the second rotating disc 6, the third rotating disc 7 and the fourth rotating disc 8 are the same as the first rotating disc 5, a collecting box 9 is arranged below the fourth rotating disc 8;
the right side of the third rotating disc 7 is provided with a feeding disc 10 in a face-to-face manner, the outer surface of the feeding disc 10 is provided with a mold core 10-1, the mold core 10-1 is in a cylindrical shape with an opening, the mold core 10-1 is in one-to-one correspondence with the mold cavity 5-1 on the first rotating disc 5, the feeding disc 10 is in a cavity shape, a feeding pipe 11 is arranged in the feeding disc 10, a feeding branch pipe 11-1 leading to the inner cavity of the mold core 10-1 is arranged on the feeding pipe 11, the lower end of the feeding pipe 11 is connected with a feeding hose 12, the lower end of the feeding hose 12 is connected with a raw material box 13, the right side of the feeding disc 10 is provided with an electric cylinder 14, the right side of the electric cylinder 14 is provided with a right upright post 15, the right upright post 15 is erected on the base 1, and the left side of the right upright post 15 is provided with a control box 16.
Further, a booster pump 13-1 is arranged in the raw material tank 13.
Further, the motor 3, the booster pump 13-1 and the electric cylinder 14 are electrically connected with the control box 16.
Further, the first rotating disc 5 is circular or square.
Further, the feeding plate 10 is connected with a bolt at the extending end of the electric cylinder 14.
The working principle of the invention is as follows:
the invention is characterized in that a left upright post 2 is erected on a base 1, a motor 3 is arranged at the upper end of the left upright post 2 and is connected with a rotating roller 4 through a rotating shaft of the motor 3, a first rotating disc 5, a second rotating disc 6, a third rotating disc 7 and a fourth rotating disc 8 are sequentially arranged on four directions on the rotating roller 4, the four rotating discs are driven to rotate through the motor 3, a right upright post 15 is arranged on the right side of the left upright post 2, an electric cylinder 14 is erected on the right upright post 15, a feed tray 10 is connected on the telescopic end of the electric cylinder 14, the feed tray 10 corresponds to any one of the first rotating disc 5, the second rotating disc 6, the third rotating disc 7 and the fourth rotating disc 8 in opposite directions, a mold cavity 5-1 is arranged on the rotating disc, a mold core 10-1 is arranged on the feed tray 10, the mold core 10-1 can be just nested in the mold cavity 5-1, a feed pipe 11 is arranged in the feed tray 10, the feeding pipe 11 is provided with a feeding branch pipe 11-1, the feeding branch pipe 11-1 is arranged in each mold core 10-1, and the feeding pipe 11 is connected with a raw material box 13 through a feeding hose 12.
When the plastic bottle cap forming machine works, firstly, one of the rotary discs is right in front of the feeding disc 10, the feeding disc 10 acts through the electric cylinder 14, the telescopic cylinder sends the feeding disc 10 to be attached to the rotary disc, at the moment, the mold cores 10-1 on the feeding disc 10 are positioned 2-3mm above the bottom of the mold cavities of the rotary discs, meanwhile, plastic bottle cap raw materials are discharged from the raw material box 13 through the booster pump on the raw material box 13 and then enter the feeding pipe 11, then enter the feeding branch pipes in the mold cores through the feeding pipe 11, the raw materials are injected into the mold cavities through the feeding branch pipes, then the mold cores are further pushed forwards through the electric cylinder 14, further, the raw materials positioned in the mold cavities are extruded, bottle cap shapes are formed, after the bottle caps are formed, the motor 3 rotates clockwise, and the formed plastic bottle caps fall into the collecting box 9 under the action of gravity.
After the technical scheme is adopted, the invention has the beneficial effects that:
1. the invention utilizes the electrode to drive the rotary table positioned on the rotating roller, the rotary table is provided with a die cavity, the opposite surface of the rotary table is provided with a feeding disc corresponding to the die cavity, the die core on the feeding disc is used as an extrusion device on the die cavity, the feeding disc realizes extrusion action through the expansion and contraction of the electric cylinder, and finally, the formed plastic bottle cap falls into the mobile phone box under the action of gravity through the rotation of the electrode and is replaced by the rotary table to be formed in the original position, thereby the invention works circularly;
2. the feeding branch pipe is arranged in the inner cavity of the die core and feeds the raw materials into the die cavity along with the die core, so that the feeding device has the characteristics of high feeding efficiency and easily controlled feeding amount.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic view of the direction a-a in fig. 1.
Fig. 3 is a schematic view of the structure of feed tray 10 of the present invention.
Fig. 4 is an enlarged schematic view at B in fig. 1.
Description of reference numerals: the device comprises a base 1, a left upright post 2, a motor 3, a rotating roller 4, a first rotary table 5, a mold cavity 5-1, a second rotary table 6, a third rotary table 7, a fourth rotary table 8, a collecting box 9, a feeding disc 10, a mold core 10-1, a feeding pipe 11, a feeding branch pipe 11-1, a feeding hose 12, a raw material box 13, a booster pump 13-1, an electric cylinder 14, a right upright post 15 and a control box 16.
Detailed Description
Referring to fig. 1 to 4, the technical solution adopted by the present embodiment is: it comprises a base 1, a left upright post 2 is arranged above the base 1, a motor 3 is arranged on the left upright post 2, the electrode 3 is a servo motor, a rotating shaft of the motor 3 is connected with a rotating roller 4, a first rotating disk 5 is arranged on the left side of the rotating roller 4, a third rotating disk 7 is arranged on the right side of the rotating roller 4, a second rotating disk 6 is arranged above the rotating roller 4, a fourth rotating disk 8 is arranged below the rotating roller 4, the first rotating disk 5, the second rotating disk 6, the third rotating disk 7 and the fourth rotating disk 8 are symmetrically arranged by taking the central line of the rotating roller 4 as the axis, the outer surface of the first rotating disc 5 is provided with a die cavity 5-1, the number of the die cores is 8, the structure of the second rotating disc 6, the third rotating disc 7 and the fourth rotating disc 8 is the same as that of the first rotating disc 5, and a collecting box 9 is arranged below the fourth rotating disc 8;
the right side of the third rotating disc 7 is provided with a feeding disc 10 in a face-to-face manner, the outer surface of the feeding disc 10 is provided with a mold core 10-1, the mold core 10-1 is in a cylindrical shape with an opening, the mold core 10-1 is in one-to-one correspondence with the mold cavity 5-1 on the first rotating disc 5, the feeding disc 10 is in a cavity shape, a feeding pipe 11 is arranged in the feeding disc 10, a feeding branch pipe 11-1 leading to the inner cavity of the mold core 10-1 is arranged on the feeding pipe 11, the lower end of the feeding pipe 11 is connected with a feeding hose 12, the lower end of the feeding hose 12 is connected with a raw material box 13, the right side of the feeding disc 10 is provided with an electric cylinder 14, the right side of the electric cylinder 14 is provided with a right upright post 15, the right upright post 15 is erected on the base 1, the left side of the right upright post 15 is provided with a control box 16, and a PLC controller is arranged in the control box 16.
The raw material box 13 is internally provided with a booster pump 13-1, the booster pump pumps the raw materials to the feeding pipe, and the power of the booster pump 13-1 is 150W.
The motor 3, the booster pump 13-1, the electric cylinder 14 and the control box 16 are electrically connected.
The first rotating disc 5 is circular.
The feeding plate 10 is connected with a bolt at the extending end of an electric cylinder 14.
In the embodiment, a left upright column 2 is erected on a base 1, a motor 3 is arranged at the upper end of the left upright column 2 and is connected with a rotating roller 4 through a rotating shaft of the motor 3, a first rotating disc 5, a second rotating disc 6, a third rotating disc 7 and a fourth rotating disc 8 are sequentially arranged on the rotating roller 4 in four directions, the four rotating discs are driven to rotate through the motor 3, a right upright column 15 is arranged on the right side of the left upright column 2, an electric cylinder 14 is erected on the right upright column 15, a feed tray 10 is connected to the telescopic end of the electric cylinder 14, the feed tray 10 corresponds to any one of the first rotating disc 5, the second rotating disc 6, the third rotating disc 7 and the fourth rotating disc 8 in opposite directions, a mold cavity 5-1 is arranged on the rotating disc, a mold core 10-1 is arranged on the feed tray 10, the mold core 10-1 can be just nested in the mold cavity 5-1, a feed pipe 11 is arranged in the feed tray 10, the feeding pipe 11 is provided with a feeding branch pipe 11-1, the feeding branch pipe 11-1 is arranged in each mold core 10-1, and the feeding pipe 11 is connected with a raw material box 13 through a feeding hose 12.
When the embodiment works, firstly, one of the rotary discs is right in front of the feeding disc 10, the feeding disc 10 is operated by the electric cylinder 14, the telescopic cylinder sends the feeding plate 10 to be attached to the rotating disc, at the moment, the mold core 10-1 on the feeding plate 10 is positioned 2mm above the bottom of the mold cavity of the rotating disc, meanwhile, the raw material of the plastic bottle caps is discharged from the raw material tank 13 and enters the feeding pipe 11 through a booster pump on the raw material tank 13, then enters the feeding pipe 11 and then enters the feeding branch pipes in each mold core through the feeding pipe 11, the raw materials are injected into the mold cavity through the feeding branch pipes, then the mould core is further pushed forwards through the electric cylinder 14, and then the raw material positioned in the mould cavity is extruded to form a bottle cap shape, after the bottle cap is formed, the motor 3 rotates clockwise, the plastic bottle cap formed under the action of gravity falls into the collection box 9, and the control process is controlled by a PLC program.
The above description is only for the purpose of illustrating the technical solutions of the present invention and not for the purpose of limiting the same, and other modifications or equivalent substitutions made by those skilled in the art to the technical solutions of the present invention should be covered within the scope of the claims of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims (5)

1. The utility model provides an extrusion equipment for preparing plastics bottle lid which characterized in that: it contains base (1), the top of base (1) be equipped with left stand (2), left stand (2) on be equipped with motor (3), the pivot of motor (3) on connect live-rollers (4), the left side of live-rollers (4) on be equipped with first carousel (5), be equipped with third carousel (7) on the right side of live-rollers (4), the top of live-rollers (4) is equipped with second carousel (6), the below of live-rollers (4) is equipped with fourth carousel (8), first carousel (5), second carousel (6), third carousel (7) and fourth carousel (8) use the central line of live-rollers (4) to be axle center symmetrical arrangement, the surface of first carousel (5) on be equipped with die cavity (5-1), die core quantity be 6-8, the structure of second carousel (6), third carousel (7) and fourth carousel (8) the same with first carousel (5), a collecting box (9) is arranged below the fourth turntable (8);
a feeding plate (10) is arranged right opposite to the right side of the third rotating disc (7), mold cores (10-1) are arranged on the outer surface of the feeding plate (10), the mold cores (10-1) are cylindrical in opening, the mold cores (10-1) correspond to mold cavities (5-1) on the first rotating disc (5) one by one, the feeding plate (10) is cavity-shaped, a feeding pipe (11) is arranged in the feeding plate, feeding branch pipes (11-1) leading to the inner cavity of the mold cores (10-1) are arranged on the feeding pipe (11), the lower end of the feeding pipe (11) is connected with a feeding hose (12), the lower end of the feeding hose (12) is connected with a raw material box (13), an electric cylinder (14) is arranged on the right side of the feeding plate (10), a right upright post (15) is arranged on the right side of the electric cylinder (14), and the right upright post (15) is erected on the base (1), and a control box (16) is arranged on the left side of the right upright post (15).
2. The extrusion forming apparatus for manufacturing plastic bottle caps as claimed in claim 1, wherein: a booster pump (13-1) is arranged in the raw material box (13).
3. The extrusion forming apparatus for manufacturing plastic bottle caps as claimed in claim 1, wherein: the motor (3), the booster pump (13-1) and the electric cylinder (14) are electrically connected with the control box (16).
4. The extrusion forming apparatus for manufacturing plastic bottle caps as claimed in claim 1, wherein: the first rotating disc (5) is round or square.
5. The extrusion forming apparatus for manufacturing plastic bottle caps as claimed in claim 1, wherein: the feeding plate (10) is connected with an extending end bolt of the electric cylinder (14).
CN202110610174.XA 2021-06-01 2021-06-01 Extrusion forming equipment for preparing plastic bottle caps Pending CN113320069A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110610174.XA CN113320069A (en) 2021-06-01 2021-06-01 Extrusion forming equipment for preparing plastic bottle caps

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110610174.XA CN113320069A (en) 2021-06-01 2021-06-01 Extrusion forming equipment for preparing plastic bottle caps

Publications (1)

Publication Number Publication Date
CN113320069A true CN113320069A (en) 2021-08-31

Family

ID=77423107

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110610174.XA Pending CN113320069A (en) 2021-06-01 2021-06-01 Extrusion forming equipment for preparing plastic bottle caps

Country Status (1)

Country Link
CN (1) CN113320069A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102632604A (en) * 2012-04-14 2012-08-15 郑永勤 Thermoforming machine
CN111823504A (en) * 2020-07-17 2020-10-27 明光市阳光塑胶容器有限公司 Bottle cap injection mold and bottle cap injection molding method

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102632604A (en) * 2012-04-14 2012-08-15 郑永勤 Thermoforming machine
CN111823504A (en) * 2020-07-17 2020-10-27 明光市阳光塑胶容器有限公司 Bottle cap injection mold and bottle cap injection molding method

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
张广成: "塑料成型加工技术", 西北工业大学出版社, pages: 259 - 260 *

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Application publication date: 20210831