Full-automatic powder spreading production line

Abstract

A full-automatic powder spreading production line comprises a tray conveying device, two feeding devices and a scraping device, the tray conveying device comprises a machine box and an assembly line arranged in the machine box, the scraping device comprises a first scraping assembly, a second scraping assembly and a pressing assembly, the number of the feeding devices is two, and the first scraping assembly is connected with the second scraping assembly. The two feeding devices comprise the first feeding device and the second feeding device, and the first feeding device and the second feeding device are each provided with a feeding nozzle; during filling, the first feeding equipment paves quantitative powder in a material disc through a feeding nozzle to form bottom paving, the first scraping assembly preliminarily scrapes the powder on the bottom paving, the second feeding equipment paves quantitative powder in the material disc through the feeding nozzle to form surface paving, the second scraping assembly scrapes the powder on the surface paving, and the first scraping assembly scrapes the powder on the surface paving to form surface paving. And the pressing assembly compacts the powder in the charging tray. According to the invention, the heights of the powder in different areas in the charging tray are flush, the processing effect of the powder in a post-processing section is effectively ensured, the automation level is high, and the labor cost is effectively saved.

Description

Technical Field

[0001] The invention relates to a powder production line, in particular to a fully automatic powder spreading production line. Background Art

[0002] As a key equipment in the field of material handling, tray filling equipment is specially designed for tray filling and is widely used in production in many fields such as chemical industry, environmental protection, building materials, etc. With the continuous growth of the domestic economy and the continuous adjustment of the industrial structure, tray filling equipment has also appeared in various forms, and the demand is also continuously expanding.

[0003] For the existing powder feeding equipment, it is usually combined with the assembly line. During processing, the assembly line drives the powder to be transferred to the bottom of the powder feeding equipment. The spiral feeder of the powder feeding equipment directly conveys the powder to the material tray through the feed nozzle, but it is easy to cause the powder height in different areas of the material tray to be inconsistent. In the subsequent processing (such as baking, calcining, etc.), it is easy to affect the processing effect of the powder, and then affect the quality of the product, causing trouble to the production enterprise. In order to solve this problem, some production enterprises will use manual scraping to flatten the powder on the material tray, but this will increase labor costs and reduce the economic benefits of the enterprise. In addition, in the prior art, whether it is transferring the empty material tray from the transfer box to the assembly line, or placing the completed filling material tray on the transfer box, it is all done manually, with a low level of automation, which further increases labor costs. Summary of the invention

[0004] Based on this, it is necessary to provide a fully automatic powder spreading production line to address the shortcomings of the existing technology.

[0005] A fully automatic powder spreading production line, which includes a tray conveying device, a feeding device and a scraping device, the tray conveying device transfers the position of the tray so that the tray flows through the tray conveying device, the feeding device fills the moving tray, and the scraping device flattens and compacts the powder in the tray; the tray conveying device includes a chassis, an assembly line arranged in the chassis, the scraping device is arranged above the assembly line, the scraping device includes a first scraping component, a second scraping component and a pressing component, the number of the feeding devices is two, the two feeding devices are divided into a first feeding device and a second feeding device, the second feeding device is arranged behind the first feeding device, and the first feeding device and the second feeding device are both provided with feeding nozzles;

[0006] When filling the material tray, the assembly line of the material tray conveying equipment drives the material tray to continuously move forward, the first feeding equipment spreads a certain amount of powder in the material tray through the feeding nozzle to form a bottom layer, the first scraper assembly preliminarily scrapes the powder on the bottom layer flat, the second feeding equipment spreads a certain amount of powder in the material tray through the feeding nozzle to form a surface layer, the second scraper assembly scrapes the powder on the surface layer flat, and the pressing assembly compacts the powder in the material tray.

[0007] In one embodiment, the first scraper assembly is disposed between the feed nozzle of the first feeding device and the feed nozzle of the second feeding device, the second scraper assembly is disposed behind the second feeding device, and the pressing assembly is disposed behind the second scraper assembly.

[0008] In one of the embodiments, the first scraper assembly includes a first positioning cylinder and a first scraper connected to the first positioning cylinder, the second scraper assembly includes a second positioning cylinder and a second scraper connected to the second positioning cylinder, the pressing assembly includes a third positioning cylinder, a mounting frame connected to the third positioning cylinder, and a roller mounted on the mounting frame, the roller can rotate around the axis of the roller on the mounting frame, and the first positioning cylinder, the second positioning cylinder, and the third positioning cylinder respectively drive the first scraper, the second scraper, and the roller to adjust in the vertical direction.

[0009] In one embodiment, the bottom of the first scraper is serrated.

[0010] In one of the embodiments, two pushing devices are further included, and the two pushing devices are respectively arranged in the front and rear positions of the tray conveying device, and each pushing device includes a positioning device and two boosting devices arranged on both sides of the positioning device, wherein the positioning device is used to place the transfer box and adjust the height of the transfer box, and the boosting device is used to assist in pushing the tray, so that the empty tray is pushed from the transfer box into the tray conveying device or the filled tray is pushed from the tray conveying device into the transfer box.

[0011] In one embodiment, the transfer box includes a box body and a roller bar group installed on the box body. The box body is provided with an inner space with an opening, and the roller bar group is arranged in the inner space. Side push openings are respectively provided on both sides of the box body near the opening, and the side push openings are connected to the inner space of the box body, and the roller bar groups at different heights on the transfer box are all arranged between the two side push openings on the box body.

[0012] In one of the embodiments, the boosting device includes a positioning frame, a positioning plate installed on the positioning frame, two slide rails installed on the positioning plate, an adjustment block slidably mounted on the two slide rails, a push plate installed on the adjustment block, a push head and a push plate assembly installed on the push plate, a push plate cylinder installed on the positioning plate and connected to the push head, the push plate assembly includes a plurality of driven wheels rotatably mounted on the push plate, a push plate motor installed on the push plate, a driving wheel installed on the push plate motor, and a push belt sleeved on the driving wheel and the driven wheel, the push belt forms a mating surface on one side of the transfer box, and the height of the mating surface is consistent with the height of the material tray on the material tray conveying equipment; when the material tray is pushed in or out from the transfer box, the push plate cylinder drives the push plate assembly of the boosting device to adjust forward, so that the mating surfaces on the two push belts extend from the side push port and fit on both sides of the material tray, and the push plate motor drives the push belt to rotate, so that the push belt drives the material tray to move.

[0013] In one of the embodiments, the positioning device includes a chassis, two positioning mechanisms installed on the chassis and arranged opposite to each other, a linkage shaft connecting the two positioning mechanisms, an electric cylinder installed on the chassis and the linkage shaft respectively, two support plates installed on the two positioning mechanisms respectively, a plurality of support members installed on the two support plates respectively, and a side push mechanism installed on one of the support plates. When placing the transfer box, the transfer box is pressed down on the support members installed on the two support plates, and the side push mechanism corrects the position of the transfer box. The electric cylinder drives the two positioning mechanisms to extend and deform through the linkage shaft, so that the positioning mechanism and the support plate installed on the positioning mechanism can be adjusted in height.

[0014] In one embodiment, the feed nozzle extends into the chassis of the tray conveying equipment, and the bottom of the feed nozzle is located above the assembly line. The bottom discharge port of the feed nozzle is arranged in a flat duckbill shape, and the flat surface of the discharge port is perpendicular to the feeding direction of the assembly line.

[0015] In one of the embodiments, it also includes a lifting mechanism and a weighing module, which are arranged in the chassis near the rear end. The lifting mechanism drives the weighing module to adjust in the vertical direction, so that the top surface of the weighing module extends above the assembly line or moves down to the position below the upper end surface of the assembly line. When the material tray filled with powder moves to the upper position of the weighing module, the lifting mechanism drives the weighing module to lift up and rest against the bottom of the material tray, and the material tray is detached from the assembly line. The weighing module weighs the powder in the material tray. If the weight is unqualified, the assembly line drives the material tray back to the bottom of the feed nozzle of the second feeding device to continue to replenish the material.

[0016] The beneficial effect of the fully automatic powder spreading production line of the present invention is that: by arranging a material tray conveying device, a feeding device and a scraping device, the scraping device includes a first scraping component, a second scraping component and a pressing component, and the number of the feeding devices is two, and the two feeding devices are divided into a first feeding device and a second feeding device. The first feeding device spreads a certain amount of powder in the material tray through a feeding nozzle to form a bottom layer, and the first scraper preliminarily scrapes the powder on the bottom layer flat. The second feeding device spreads a certain amount of powder in the material tray through a feeding nozzle to form a surface layer, and the second scraper scrapes the powder on the surface layer flat, and the roller compacts the powder in the material tray, thereby ensuring that the powder is highly even in different areas of the material tray, effectively ensuring the processing effect in the post-processing section of the powder, and the fully automatic powder spreading production line has a high level of automation in the entire production process, effectively saving labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 , Figure 2 The schematic diagrams of the structure of the fully automatic powder laying production line of the present invention at different angles;

[0018] Figure 3 This is a schematic diagram of the structure after the tray is loaded into the transfer box;

[0019] Figure 4 It is a structural schematic diagram of the material pushing device in the present invention;

[0020] Figure 5 for Figure 4 A top view of the pusher device shown;

[0021] Figure 6 for Figure 4 A cross-sectional view of the positioning device of the pusher device shown;

[0022] Figure 7 It is a schematic diagram of the structure of the feed nozzle, scraper device, lifting mechanism, weighing module and tray conveying device in the present invention when they are installed in coordination, wherein part of the outer shell of the tray conveying device is not shown.

[0023] Figure 8 for Figure 7 A magnified view of part A;

[0024] Fig. 9 It is a structural schematic diagram of the scraping equipment in the present invention;

[0025] Fig.10 It is a structural schematic diagram of the lifting mechanism and the weighing module in the present invention when they are installed in coordination. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0027] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0028] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0029] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0031] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0032] See also Figure 1 , Figure 2 and Figure 7 The present invention provides a fully automatic powder spreading production line, which includes two pushing devices 20, a tray conveying device 10, a feeding device 30 and a scraping device 40. The two pushing devices 20 are respectively arranged at the front and rear positions of the tray conveying device 10, and each pushing device 20 includes a positioning device 50 and two boosting devices 60 arranged on the left and right sides of the positioning device 50, wherein the positioning device 50 is used to place a transfer box 90 and adjust the height of the transfer box 90, and the boosting device 60 is used to assist in pushing the tray 100, so that the empty tray 100 is pushed from the transfer box 90 into the tray conveying device 10 or the filled tray 100 is pushed from the tray conveying device 10 into the transfer box 90. The tray conveying device 10 provides an inner space and transfers the position of the tray 100 so that the tray 100 flows through the tray conveying device 10 . The feeding device 30 fills the moving tray 100 , and the scraping device 40 scrapes the powder in the tray 100 .

[0033] See also Figure 3 The transfer box 90 includes a box body 91 and a roller bar group 92 installed on the box body 91. The box body 91 is provided with an inner space 911 with an opening. The roller bar group 92 is arranged in the inner space 911. Each roller bar group 92 includes two roller bars 93 arranged opposite to each other. The roller bar groups 92 are distributed in sequence along the vertical direction. Each roller bar 93 includes a support portion 931 and a roller 932 rollingly installed on the inner side of the support portion 931. A guide groove 933 is provided on the inner side of the upper end surface of the support portion 931. The height of the top of the roller 932 is higher than the bottom surface of the guide groove 933. In addition, a groove wall of the guide groove 933 at the front side is provided with an outwardly inclined guide surface 934. The inclined guide surface 934 guides the material tray 100 when it is pushed into the guide groove 933. In addition, side push openings 912 are respectively provided on both sides of the box body 91 near the openings, and the side push openings 912 are connected to the inner space 911 of the box body 91 , and the roller bar groups 92 of different heights on the transfer box 90 are all arranged between the side push openings 912 on the box body 91 .

[0034] See also Figure 4 , Figure 5 , Figure 6 The positioning device 50 includes a chassis 51, two positioning mechanisms 52 mounted on the chassis 51 and arranged opposite to each other, a linkage shaft 53 connecting the two positioning mechanisms 52, an electric cylinder 54 respectively mounted on the chassis 51 and the linkage shaft 53, two support plates 55 respectively mounted on the two positioning mechanisms 52, a plurality of support members 57 and two limit plates 56 respectively mounted on the two support plates 55, and a side push mechanism 58 mounted on one of the support plates 55. When placing the transfer box 90, the transfer box 90 is pressed down on the support members 57 mounted on the two support plates 55. During the pressing process of the transfer box 90, the limit plates guide the transfer box 90, and the side push mechanism 58 corrects the position of the transfer box 90. The electric cylinder 54 drives the two positioning mechanisms 52 to expand and contract through the linkage shaft 53, so that the positioning mechanism 52 and the support plates 55 mounted on the positioning mechanism 52 can be adjusted in height.

[0035] Specifically, the two limit plates 56 are arranged opposite to each other, and the upper ends of the limit plates 56 are inclined outward, so that an introduction surface 561 is formed on the inner side of the upper ends of the limit plates 56. The introduction surface 561 can guide the transfer box 90, and the transfer box 90 is pressed down between the two limit plates 56. The limit plate 56 on the same side as the side thrust mechanism 58 is also provided with a side thrust port 912. The side thrust mechanism 58 includes a side thrust cylinder 581 and a side thrust plate 582 connected to the side thrust cylinder 581. The side thrust cylinder 581 drives the side thrust plate 582 to push forward or shift backward. When the side thrust cylinder 581 drives the side thrust plate 582 to shift backward, the side thrust plate 582 moves to the outer side of the limit plate. When the side thrust cylinder 581 drives the side thrust plate 582 to push forward, the side thrust plate 582 extends from the side thrust opening 912 and squeezes the transfer box 90, so that the transfer box 90 is completely fitted with the limit plate 56 away from the side thrust mechanism 58, thereby realizing the position correction of the transfer box 90. In this embodiment, the support member 57 is a bull's eye bearing. In the process of position correction of the transfer box 90, the bull's eye bearing is used to support the transfer box 90, which can effectively reduce friction.

[0036] The boosting device 60 includes a positioning frame 61, a positioning plate 62 installed on the positioning frame 61, two slide rails 63 installed on the positioning plate 62, an adjustment block 64 slidably arranged on the two slide rails 63, a push plate 65 installed on the adjustment block 64, a push head 66 and a push plate assembly 68 installed on the push plate 65, and a push plate cylinder 67 installed on the positioning plate 62 and connected to the push head 66. The push plate assembly 68 includes a plurality of driven wheels 681 rotatably installed on the push plate 65, a push plate motor 682 installed on the push plate 65 and passing through the push plate 65, a driving wheel 683 installed on the push plate motor 682, and a push belt 684 sleeved on the driving wheel 683 and the driven wheel 681. The push belt 684 forms a mating surface 685 on the side of the transfer box 90, and the mating surface 685 is arranged opposite to the side push port 912 on the transfer box 90, and the height of the mating surface 685 is consistent with the height of the material tray 100 on the material tray conveying equipment 10.

[0037] When the material tray 100 is pushed from the transfer box 90 into the material tray conveying equipment 10, the pushing plate cylinder 67 of the two boosting devices 60 drives the pushing plate 65, the adjusting block 64 and the pushing plate assembly 68 to adjust forward, so that the matching surfaces 685 on the two pushing belts 684 extend from the side pushing port 912 and fit with the two sides of the material tray 100, and the pushing plate motor 682 drives the pushing belt 684 to rotate through the driving wheel 683 and the driven wheel 681, so that the matching surface 685 on the pushing belt 684 drives the material tray 100 to flow into the material tray conveying equipment 10. On the contrary, when it is necessary to push the material tray 100 from the material tray conveying device 10 into the transfer box 90, the front end of the material tray 100 flowing out of the material tray conveying device 10 initially flows into the transfer box 90, and the push plate cylinder 67 of the two booster devices 60 drives the push plate 65, the adjustment block 64 and the push plate assembly 68 to adjust forward, so that the matching surface 685 on the push belt 684 extends from the side push port 912 and fits with the material tray 100, and the push plate motor 682 drives the push belt 684 to rotate through the driving wheel 683 and the driven wheel 681, so that the matching surface 685 on the push belt 684 drives the material tray 100 to further flow into the transfer box 90.

[0038] Each of the positioning mechanisms 52 comprises two guide rails 521, two sliders 522 respectively slidably mounted on the two guide rails 521, a first linkage seat 523 mounted on the two sliders 522, two second linkage seats 524, two cross-arranged positioning rods 525, and a plurality of rotating shafts for auxiliary fixing, the two guide rails 521 are respectively mounted on the chassis 51 and the support plate 55, the two first linkage seats 523 are aligned in the vertical direction, the two second linkage seats 524 are aligned in the vertical direction, and the two first linkage seats 523 and the two second linkage seats 524 form a square structure. The two cross-positioning rods 525 form four end portions 5251, and the four end portions 5251 are respectively aligned with the two first linkage seats 523 and the two second linkage seats 524 in the horizontal direction. The rotating shaft is divided into a first rotating shaft 526, a second rotating shaft 527 and a third rotating shaft 528, wherein the first rotating shaft 526 passes through the intersection of the two adjusting rods 525 at the same time, and the two adjusting rods 525 can rotate around the axis of the first rotating shaft 526, so that the two adjusting rods 525 can be adjusted in angle, the second rotating shaft 527 passes through the end portions 5251 of the adjusting rods 525 aligned with each other and the first linkage seat 523 at the same time, and the third rotating shaft 528 passes through the end portions 5251 of the adjusting rods 525 aligned with each other and the second linkage seat 524 at the same time, and the adjusting rods 525 can be adjusted in angle on the first linkage seat 523 and the second linkage seat 524.

[0039] In addition, the linkage shaft 53 is connected to the sliders 522 on the two positioning mechanisms 52. During the telescopic positioning process, the electric rod drives the sliders 522 of the two positioning mechanisms 52 and the first linkage seat 523 installed on the slider 522 to slide along the guide rail 521 through the linkage shaft 53. During the movement of the first linkage seat 523, the two positioning rods 525 of the positioning mechanism 52 are driven to adjust the angle. The other slider 522 and the other first linkage seat 523 are horizontally adjusted along the other guide rail 521. When the angle between the two positioning rods 525 increases, the height of the upper ends of the two positioning rods 525 moves downward, and the height of the support plate 55 and the transfer box 90 also moves downward synchronously. Conversely, when the angle between the two positioning rods 525 decreases, the height of the upper ends of the two positioning rods 525 moves upward, and the height of the support plate 55 and the transfer box 90 also moves upward synchronously.

[0040] See also Figure 7 , Figure 8The tray conveying device 10 includes a chassis 11, an assembly line 12 arranged in the chassis 11, a first compartment door 13 and a second compartment door 14 arranged at the front and rear positions of the chassis 11, and a third compartment door 15 arranged at the front side of the chassis 11, wherein the first compartment door 13 and the second compartment door 14 are electric compartments, and the assembly line 12 is used to drive the tray 100 to shift forward or backward. Since the structure of the assembly line 12 is a driving structure well known to those skilled in the art, it will not be repeated here. In addition, the tray conveying device 10 is also provided with a brush 16, which is arranged at both sides of the assembly line 12. The brush 16 can clean both sides of the tray 100. In addition, the third compartment door 15 can be opened or closed manually to clean the inside of the chassis 11 or to take out the tray 100 urgently.

[0041] See also Fig. 9 There are two feeding devices 30. For the convenience of description, the two feeding devices 30 are divided into a first feeding device 30A and a second feeding device 30B. The second feeding device 30B is arranged behind the first feeding device 30A. Each of the feeding devices 30 includes a metering bin 31, a rotary valve 32, a pneumatic butterfly valve 33 and a feeding nozzle 34 connected in sequence. The feeding nozzle 34 extends into the chassis 11 of the tray conveying device 10, and the bottom of the feeding nozzle 34 is located above the assembly line 12. The bottom discharge port of the feeding nozzle 34 is arranged in a flat duckbill shape, and the flat surface of the discharge port is perpendicular to the feeding direction of the assembly line 12. The feeding nozzle 34 with a flat discharge port can make the powder more evenly spread on the tray 100. The metering bin 31 is connected to an external storage bin, which transfers a certain amount of powder into the metering bin 31 through a weighing device and a screw feeder. The rotary valve 32 can achieve more uniform feeding of the powder, and the pneumatic butterfly valve 33 can control the on-off of the flow channel between the feed nozzle 34 and the rotary valve 32.

[0042] The scraper device 40 is arranged above the assembly line 12, and the scraper device 40 includes a first scraper component 41, a second scraper component 42 and a pressing component 43. The first scraper component 41 includes a first positioning cylinder 411 and a first scraper 412 connected to the first positioning cylinder 411. The second scraper component 42 includes a second positioning cylinder 421 and a second scraper 422 connected to the second positioning cylinder 421. The pressing component 43 includes a third positioning cylinder 431, a mounting frame 432 connected to the third positioning cylinder 431, and a roller 33 mounted on the mounting frame 432. The roller 33 can rotate around the axis of the roller 33 on the mounting frame 432. The first scraper component 41 is arranged between the feed nozzle 34 of the first feeding device 30A and the feed nozzle 34 of the second feeding device 30B. The second scraper component 42 is arranged behind the second feeding device 30B. The pressing component 43 is arranged behind the second scraper component 42. The first adjustment cylinder 411, the second adjustment cylinder 421 and the third adjustment cylinder 431 respectively drive the first scraper 412, the second scraper 422 and the roller 33 to adjust in the vertical direction. The bottom of the first scraper 412 is serrated.

[0043] See also Figure 7 , Fig.10 The present invention further includes a lifting mechanism 70 and a weighing module 80, which are arranged in the rear end of the chassis 11. The lifting mechanism 70 is a cylinder, and the lifting mechanism 70 drives the weighing module 80 to adjust the position in the vertical direction, so that the top surface of the weighing module 80 extends above the assembly line 12 or moves down to a position below the upper end surface of the assembly line 12.

[0044] The working process of the fully automatic powder spreading production line of the present invention is described in detail below:

[0045] The AGV trolley transfers a transfer box 90 loaded with empty trays 100 to the pushing device 20 at the front side, and the side push mechanism 58 corrects the position of the transfer box 90, the opening part of which is opposite to the tray conveying device 10, and transfers another empty transfer box 90 to the pushing device 20 at the rear side, and the side push mechanism 58 of the pushing device 20 corrects the position of the transfer box 90.

[0046] When the material tray 100 is pushed into the material tray conveying device 10, the first compartment door 13 of the material tray conveying device 10 is opened, and the positioning device 50 drives the transfer box 90 on the front side to adjust upward layer by layer. After each adjustment, the height of a material tray 100 in the transfer box 90 is flush with the pushing belt 684 of the boosting device 60 and the matching surface 685 on the pushing belt 684. The boosting device 60 pushes the material tray 100 into the material tray conveying device 10, and then closes the first compartment door 13.

[0047] When the tray 100 is filled, the assembly line 12 of the tray conveying device 10 drives the tray 100 to continuously shift forward. When the tray 100 reaches the set position and is detected by the sensor, the first feeding device 30A opens the pneumatic butterfly valve 33, and the first feeding device 30A spreads a certain amount of powder in the tray 100 through the feeding nozzle 34 to form a bottom layer. The first adjustment cylinder 411 of the first scraper assembly 41 drives the first scraper 412 to adjust downward, and the first scraper 412 performs preliminary scraping of the powder on the bottom layer. The first scraper 412 with a serrated bottom can make the powder on the bottom layer spread more evenly and prevent cavities from forming inside the powder. When the tray 100 continuously shifts forward to the bottom of the second feeding device 30B, the second feeding device 30B opens the pneumatic butterfly valve 33, and the second feeding device 30B spreads a certain amount of powder in the tray 100 through the feeding nozzle 34 to form a surface layer. During the continuous forward movement, the second positioning cylinder 421 of the second scraper assembly 42 drives the second scraper 422 to adjust downward, and the second scraper 422 scrapes the powder on the surface flat, and the third positioning cylinder 431 drives the roller 33 to press down, and the roller 33 compacts the powder in the material tray 100. After the first scraper 412, the second scraper 422 and the roller 33 complete scraping or pressing, the first adjustment cylinder 411, the second adjustment cylinder 421, and the third adjustment cylinder 431 respectively drive the first scraper 412, the second scraper 422 and the roller 33 to lift up for avoidance. When the material tray 100 filled with powder moves to the upper position of the weighing module 80, the lifting mechanism 70 drives the weighing module 80 to lift up and rest against the bottom of the material tray 100, and the material tray 100 is detached from the assembly line 12. The weighing module 80 weighs the powder in the material tray 100. If the weight is unqualified, the assembly line 12 drives the material tray 100 back to the bottom of the feed nozzle 34 of the second feeding device 30B to continue to replenish the material. The second scraper 422 and the roller 33 scrape and press the material again. If the weight is qualified, the assembly line 12 drives the material tray 100 to move to a position close to the second bin door 14 and open the second bin door 14.

[0048] When the material tray 100 is pushed into the transfer box 90 at the rear, the positioning device 50 drives the transfer box 90 at the rear side to adjust downward layer by layer. After each adjustment, a group of roller bars 92 in the transfer box 90 are flush with the pushing belt 684 of the boosting device 60 and the matching surface 685 on the pushing belt 684. The front end of the material tray 100 flowing out of the material tray conveying equipment 10 initially flows into the transfer box 90, and the boosting device 60 drives the material tray 100 to further flow into the transfer box 90.

[0049] The beneficial effect of the fully automatic powder spreading production line of the present invention is that: by setting a tray conveying device 10, a feeding device 30 and a scraping device 40, the scraping device 40 includes a first scraping component 41, a second scraping component 42 and a pressing component 43, the number of the feeding devices 30 is two, and the two feeding devices 30 are divided into a first feeding device 30A and a second feeding device 30B. The first feeding device 30A spreads a certain amount of powder in the tray 100 through a feeding nozzle 34 to form a bottom spread, and the first The scraper 412 performs preliminary leveling of the powder on the bottom, and the second feeding device 30B spreads a certain amount of powder in the material tray 100 through the feeding nozzle 34 to form a surface layer. The second scraper 422 levels the powder on the surface, and the roller 33 compacts the powder in the material tray 100, thereby ensuring that the powder is highly level in different areas of the material tray 100, effectively ensuring the processing effect in the post-processing section of the powder, and the fully automatic powder spreading production line has a high level of automation in the entire production process, effectively saving labor costs.

[0050] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0051] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A fully automatic powder spreading production line, characterized in that: It includes a tray conveying device, a feeding device and a scraping device. The tray conveying device transfers the position of the tray so that the tray flows through the tray conveying device. The feeding device fills the moving tray. The scraping device flattens and compacts the powder in the tray. The tray conveying device includes a chassis and an assembly line arranged in the chassis. The scraping device is arranged above the assembly line. The scraping device includes a first scraping assembly, a second scraping assembly and a pressing assembly. There are two feeding devices. The two feeding devices are divided into a first feeding device and a second feeding device. The second feeding device is arranged behind the first feeding device. Feed nozzles are provided on both the first feeding device and the second feeding device. When filling the material tray, the assembly line of the material tray conveying equipment drives the material tray to continuously move forward, the first feeding equipment spreads a certain amount of powder in the material tray through the feeding nozzle to form a bottom layer, the first scraper assembly preliminarily scrapes the powder on the bottom layer flat, the second feeding equipment spreads a certain amount of powder in the material tray through the feeding nozzle to form a surface layer, the second scraper assembly scrapes the powder on the surface layer flat, and the pressing assembly compacts the powder in the material tray.

2. The fully automatic powder spreading production line according to claim 1 is characterized in that: The first scraper assembly is arranged between the feed nozzle of the first feeding device and the feed nozzle of the second feeding device, the second scraper assembly is arranged behind the second feeding device, and the pressing assembly is arranged behind the second scraper assembly.

3. The fully automatic powder spreading production line according to claim 2 is characterized in that: The first scraper assembly includes a first positioning cylinder and a first scraper connected to the first positioning cylinder, the second scraper assembly includes a second positioning cylinder and a second scraper connected to the second positioning cylinder, the pressing assembly includes a third positioning cylinder, a mounting frame connected to the third positioning cylinder, and a roller mounted on the mounting frame, the roller can rotate around the axis of the roller on the mounting frame, and the first positioning cylinder, the second positioning cylinder, and the third positioning cylinder respectively drive the first scraper, the second scraper, and the roller to adjust in the vertical direction.

4. The fully automatic powder spreading production line according to claim 3 is characterized in that: The bottom of the first scraper is arranged in a sawtooth shape.

5. The fully automatic powder spreading production line according to claim 1 is characterized in that: It also includes two material pushing devices, which are respectively arranged at the front and rear positions of the tray conveying device. Each material pushing device includes a positioning device and two boosting devices arranged on both sides of the positioning device. The positioning device is used to place the transfer box and adjust the height of the transfer box. The boosting device is used to assist in pushing the tray, so that the empty tray is pushed from the transfer box to the tray conveying device or the filled tray is pushed from the tray conveying device into the transfer box.

6. The fully automatic powder spreading production line according to claim 5 is characterized in that: The transfer box includes a box body and a roller bar group installed on the box body. The box body is provided with an inner space with an opening, and the roller bar group is arranged in the inner space. Side push openings are respectively provided on both sides of the box body near the opening, and the side push openings are connected to the inner space of the box body, and the roller bar groups at different heights on the transfer box are all arranged between the two side push openings on the box body.

7. The fully automatic powder spreading production line according to claim 6 is characterized in that: The boosting device includes a positioning frame, a positioning plate installed on the positioning frame, two slide rails installed on the positioning plate, an adjustment block slidably arranged on the two slide rails, a push plate installed on the adjustment block, a push head and a push plate assembly installed on the push plate, a push plate cylinder installed on the positioning plate and connected to the push head, the push plate assembly includes a plurality of driven wheels rotatably installed on the push plate, a push plate motor installed on the push plate, a driving wheel installed on the push plate motor, and a push belt sleeved on the driving wheel and the driven wheel. The push belt forms a mating surface on one side of the transfer box, and the height of the mating surface is consistent with the height of the material tray on the material tray conveying equipment; when the material tray is pushed in or out from the transfer box, the push plate cylinder drives the push plate assembly of the boosting device to adjust forward, so that the mating surfaces on the two push belts extend from the side push port and fit on both sides of the material tray, and the push plate motor drives the push belt to rotate, so that the push belt drives the material tray to move.

8. The fully automatic powder spreading production line according to claim 5 is characterized in that: The positioning device includes a chassis, two positioning mechanisms installed on the chassis and arranged opposite to each other, a linkage shaft connecting the two positioning mechanisms, an electric cylinder installed on the chassis and the linkage shaft respectively, two support plates installed on the two positioning mechanisms respectively, a plurality of support members installed on the two support plates respectively, and a side push mechanism installed on one of the support plates. When placing the transfer box, the transfer box is pressed down on the support members installed on the two support plates, and the side push mechanism corrects the position of the transfer box. The electric cylinder drives the two positioning mechanisms to expand and contract through the linkage shaft, so that the positioning mechanism and the support plate installed on the positioning mechanism can be adjusted in height.

9. The fully automatic powder spreading production line according to claim 1, characterized in that: The feed nozzle extends into the chassis of the tray conveying equipment, and the bottom of the feed nozzle is located above the assembly line. The bottom discharge port of the feed nozzle is arranged in a flat duckbill shape, and the flat surface of the discharge port is perpendicular to the feeding direction of the assembly line.

10. The fully automatic powder spreading production line according to claim 1, characterized in that: It also includes a lifting mechanism and a weighing module, which are arranged in the chassis near the rear end. The lifting mechanism drives the weighing module to adjust in the vertical direction, so that the top surface of the weighing module extends above the assembly line or moves down to the position below the upper end surface of the assembly line. When the material tray filled with powder moves to the upper position of the weighing module, the lifting mechanism drives the weighing module to lift up and rest against the bottom of the material tray, and the material tray is detached from the assembly line. The weighing module weighs the powder in the material tray. If the weight is unqualified, the assembly line drives the material tray back to the bottom of the feed nozzle of the second feeding device to continue to replenish the material.

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