CN109501058B

CN109501058B - Automatic feeding system

Info

Publication number: CN109501058B
Application number: CN201811232560.4A
Authority: CN
Inventors: 王波; 王西峰
Original assignee: Xiangyang Linghao Technology Co ltd
Current assignee: Xiangyang Linghao Technology Co ltd
Priority date: 2018-10-22
Filing date: 2018-10-22
Publication date: 2020-12-11
Anticipated expiration: 2038-10-22
Also published as: CN109501058A

Abstract

The invention relates to an automatic feeding system which comprises a rack, a workbench, a subdivision mechanism, a material weighing mechanism, a telescopic feeding mechanism and a controller, wherein a first conveying driving assembly and a crushed material driving assembly of the subdivision mechanism subdivide materials; the material weighing mechanism weighs materials of the subdivided materials in the material weighing hopper through the weighing sensor, the telescopic feeding mechanism feeds the weighed materials into the material pressing device through the telescopic driving assembly and the second conveying driving assembly, and the controller is connected with the material weighing mechanism, the material weighing mechanism and the telescopic feeding mechanism respectively. The automatic feeding system can crush and subdivide materials, improves the weighing accuracy, and facilitates the high efficiency of subsequent processing procedures such as mixing, pressing and the like; the material after weighing can be directly stretched into the material pressing device through the telescopic feeding mechanism to be mixed and pressed, so that the occupied space can be obviously saved, and the overall production efficiency is improved.

Description

Automatic feeding system

Technical Field

The invention relates to an automatic feeding system.

Background

Brake pads are also called brake shoes. In the brake system of the automobile, the brake pad is the most critical safety part, and the quality of all brake effects plays a decisive role in the brake pad, so the good brake pad is the protection spirit of people and automobiles.

However, on the traditional brake pad production line, the used raw materials often have the conditions of caking, flocculation and the like, so that the weighing accuracy of the raw materials is poor, and the subsequent processing procedures of mixing, pressing and the like are influenced. In addition, the space that traditional brake block production line mulberry title material and system of pay-off occupy is great.

Disclosure of Invention

Aiming at the technical problems in the prior art, the invention provides the automatic feeding system which is good in material weighing accuracy and can save occupied space so as to improve the production efficiency of the brake pad.

The technical scheme for solving the technical problems is as follows:

an automatic feed system comprising:

a frame;

the workbench is arranged at the top of the rack and provided with a blanking hole;

the fine separation mechanism comprises a support, a first conveying driving assembly and a fine material driving assembly, the support is arranged on the workbench, the first conveying driving assembly comprises a first conveying belt and a first conveying driving device, the first conveying belt is rotatably arranged on the support, and the first conveying driving device is connected with the first conveying belt and used for driving the first conveying belt to rotate; the crushing material driving assembly comprises a first fixing frame, a first rotating shaft, a crushing material brush and a crushing material driving device, the first fixing frame is arranged on the support, the first rotating shaft is rotatably arranged on the first fixing frame, the crushing material driving device is connected with the first rotating shaft, the crushing material brush is integrally of a cylindrical structure, the first rotating shaft is sleeved with the crushing material brush, and the crushing material brush is positioned above the first conveying belt;

the material weighing mechanism comprises a fixing frame, a material weighing hopper, a supporting frame and a weighing sensor, the fixing frame is arranged on the upper surface of the workbench, the material weighing hopper is arranged in the fixing frame, a feeding hole of the material weighing hopper is arranged below the end part of the first conveying belt correspondingly, a discharging hole of the material weighing hopper is arranged correspondingly to the discharging hole, the supporting frame is arranged on the material weighing hopper, the weighing sensor is arranged at the top of the supporting frame, and the weighing sensor is connected with the fixing frame and used for weighing the material in the material weighing hopper;

the telescopic feeding mechanism comprises a mounting seat, a first guide rail, a supporting frame body, a telescopic driving assembly and a second conveying driving assembly; the mounting seat is arranged in the rack, the mounting seat is provided with a sliding groove, the first guide rail is arranged on the side wall of the supporting frame body and clamped in the sliding groove, and the telescopic driving assembly is connected with the supporting frame body and used for driving the supporting frame body to drive the first guide rail to extend out of the rack or move back into the rack along the sliding groove; the second conveying driving assembly comprises a second conveying belt and a second conveying driving device connected with the second conveying belt, and the second conveying belt is rotatably arranged in the supporting frame and used for receiving and conveying the materials falling from the weighing hopper; and

and the controller is respectively connected with the fine division mechanism, the material weighing mechanism and the telescopic feeding mechanism.

According to the automatic feeding system, the rack, the workbench, the subdivision mechanism, the weighing mechanism, the telescopic feeding mechanism and the controller are matched, and crushing and subdivision processing can be performed on materials through the crushing brush of the subdivision mechanism, so that effective crushing and subdivision processing on raw materials with the conditions of caking, flocculation and the like on an automatic production line can be realized, the weighing accuracy of the weighing mechanism on the materials is improved, and the high efficiency of subsequent processing procedures such as mixing, pressing and the like is facilitated; the material after weighing can be directly stretched into the material pressing device through the telescopic feeding mechanism to be mixed and pressed, so that the occupied space can be obviously saved, and the overall production efficiency is improved.

Drawings

FIG. 1 is a schematic diagram of a perspective view of an automated feed system according to one embodiment;

FIG. 2 is a schematic diagram of another view of the automated feed system of FIG. 1;

FIG. 3 is a schematic diagram of a further perspective of the automated feed system of FIG. 1;

FIG. 4 is a schematic diagram of another view of the automatic feed system of FIG. 1;

FIG. 5 is a top view schematic of the automatic feed system of FIG. 1;

FIG. 6 is a schematic structural diagram of the automatic feeding system of FIG. 1 in a feeding state;

FIG. 7 is a schematic structural view of a material distributing mechanism in the automatic material feeding system of FIG. 1;

fig. 8 is a schematic view of the matching structure of the material distributing mechanism, the material weighing mechanism and the material storing mechanism in the automatic material supplying system of fig. 1;

FIG. 9 is a schematic view of a telescopic feeding mechanism of the automatic feeding system of FIG. 1;

fig. 10 is a schematic structural view of the telescopic feeding mechanism of fig. 9 from another view angle.

In the drawings, the components represented by the respective reference numerals are listed below:

1. the automatic feeding system comprises a 10, a frame, 20, a workbench, 30, a material distribution container, 100, a fine dividing mechanism, 110, a support, 111, a foot rest, 112, a fixing part, 120, a first conveying driving component, 121, a first conveying belt, 123, a main power wheel, 130, a material distribution driving component, 131, a first fixing frame, 132, a material distribution brush, 133, a material distribution driving device, 134, a positioning plate, 135, a first dust cover, 200, a material weighing mechanism, 210, a fixing frame, 220, a weighing sensor, 230, a material weighing hopper, 231, a movable door, 240, a supporting frame, 251, a first driving cylinder, 300, a material storing mechanism, 310, a material storage container, 400, a telescopic feeding mechanism, 410, a mounting seat, 420, a supporting frame body, 431, a second conveying belt, 432, a telescopic driving motor, 441, a second conveying belt, 442, a second conveying driving device, 422, a material returning hopper, 500 and a controller.

Detailed Description

The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention. The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention. It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Referring to fig. 1 to 6, an automatic feeding system 1 of an embodiment includes a frame 10, a table 20, a fine-dividing mechanism 100, a weighing mechanism 200, a storing mechanism 300, a telescopic feeding mechanism 400, and a controller 500.

In the present embodiment, the table 20 is provided on the top of the frame 10, and the table 20 is provided with a blanking hole. Subdividing mechanism 100 includes a support 110, a first conveyor drive assembly 120, and a scrap drive assembly 130. The support 110 is provided on the table. The first conveyance driving assembly 120 includes a first conveyor belt 121 and a first conveyance driving device. The first conveyor belt 121 is rotatably disposed on the support 110, and the first conveyor driving device is connected to the first conveyor belt 121 and is configured to drive the first conveyor belt 121 to rotate. Spitwad drive assembly 130 includes a first mount 131, a first shaft, a spit brush 132, and a spit drive device 133. On support 110 was located to first mount 131, first pivot rotationally located on first mount 131, crushed aggregates drive arrangement 133 connected first pivot, crushed aggregates brush 132 was the cylindric structure on the whole, and first pivot is established to crushed aggregates brush 132 cover, and crushed aggregates brush 132 is located the top of first conveyer belt 121. The weighing mechanism 200 includes a holder 210, a load cell 220, a weighing hopper 230, and a support frame 240. The fixing frame 210 is provided on the upper surface of the table 20. The weighing hopper 230 is arranged in the fixing frame 210, a feeding hole of the weighing hopper 230 is arranged below the end part of the first conveyor belt 121, and a discharging hole of the weighing hopper 230 is arranged corresponding to the discharging hole. The support frame 240 is provided on the weigh bin 230. The weighing sensor 220 is disposed on the top of the supporting frame 240, and the weighing sensor 220 is connected to the fixing frame 210 for weighing the material in the hopper 230. The telescopic feeding mechanism 400 includes a mounting base 410, a first guide rail 411, a support frame 420, a telescopic driving assembly, and a second conveying driving assembly. The mounting seat 410 is disposed in the frame 10, and the mounting seat 410 has a sliding groove. The first guide rail 411 is disposed on a side wall of the supporting frame body 420, the first guide rail 411 is clamped in the sliding groove, and the telescopic driving assembly is connected to the supporting frame body 420 and is used for driving the supporting frame body 420 to drive the first guide rail 411 to extend out of the rack 10 or move back to the rack 10 along the sliding groove. The second conveying driving assembly includes a second conveyor belt 441 and a second conveying driving device connected to the second conveyor belt 441, and the second conveyor belt 441 is rotatably disposed in the supporting frame 420 for receiving and conveying the materials falling from the weighing hopper 230. The controller 500 is respectively connected with the fine-dividing mechanism 100, the material weighing mechanism 200 and the telescopic feeding mechanism 400.

The automatic feeding system of the embodiment is provided by matching the rack 10, the workbench 20, the subdividing mechanism 100, the material weighing mechanism 200, the telescopic feeding mechanism 400 and the controller 500, and can crush and subdivide materials by the material crushing brush 132 of the subdividing mechanism 100, and the controller 500 preferably selects a PLC (programmable logic controller) to form a control screen, so that the raw materials with the conditions of caking, flocculation and the like on an automatic production line can be effectively crushed and subdivided, the accuracy of the material weighing mechanism 200 for weighing the materials is improved, and the high efficiency of subsequent mixing, material pressing and other processing procedures is facilitated; the weighed materials can be directly stretched into the material pressing device through the telescopic feeding mechanism 400 to be mixed and pressed, so that the occupied space can be obviously saved, and the overall production efficiency can be improved.

Specifically, in the present embodiment, the frame 10 has a rectangular parallelepiped frame structure as a whole. Preferably, the cabinet body is arranged at the lower part of the rack 10, and the top wall of the cabinet body is provided with a circuit hole, so that an air source, a power supply and a circuit of a driving motor of the driving cylinder are convenient to arrange, the space is saved, and the neatness effect is improved. In addition, a table 20 is provided on the top of the frame 10. The table 20 is provided with a blanking hole. The height of the top wall area for placing the controller 500 on the rack 10 is lower than that of the workbench 20, so that the controller 500 can be touched manually to regulate and control the raw material conveying process.

Referring to fig. 7 and 8, in the present embodiment, the support base 110 preferably has a mounting groove and a foot rest 111 supporting the mounting groove. The mounting groove is a sinking platform cavity structure with a long top and a narrow bottom on the whole, so that avoidance spaces are formed at two ends of the support 110. Preferably, the first belt 121 is tensioned by a plurality of tension rollers rotatably provided at an upper portion of the support 110 to tension the first belt 121, and the main power wheel 123. The first conveying driving device is preferably a motor for driving the first conveyor belt 121 to rotate forward or backward, and may be connected to a power supply for operation. The first transmission driving device is arranged in the middle of the support 110 and arranged on the side wall of the mounting groove, the main power wheel 123 is connected with the first transmission driving device to drive the first transmission belt 121 to rotate, and the main power wheel 123 is located in the mounting groove, so that the whole first transmission driving assembly is more compactly arranged in the support 110.

Further, a mount 112 for mounting the dispensing container 30 is provided at the top of the support 110 near the center. The fixing member 112 may be a fixing piece having a fixing hole, for example, and the material separation container 30 may be fixed by a bolt structure. The distributing container 30 is a rectangular parallelepiped structure, and is disposed on the support 110 and above the first conveyor belt 121. Preferably, the material distributing container 30 has a containing cavity, a feeding port communicated with the containing cavity, and two material distributing ports communicated with the containing cavity, the feeding port is arranged in a central area on the top wall of the material distributing container 30, the two material distributing ports are arranged on the side wall of the material distributing container 30, one of the material distributing ports is arranged towards one end of the first conveyor belt 121, and the other material distributing port is arranged towards the other end of the first conveyor belt 121, so that bidirectional material supply is realized, the material supplying efficiency is improved, and the production efficiency is further improved.

Preferably, the first holder 131 has a frame structure consisting of two narrow strip-shaped plates and two wide strip-shaped plates. The two wide strip-shaped plates are oppositely arranged, and the two narrow strip-shaped plates are oppositely arranged and arranged at the tops of the two wide strip-shaped plates. The first rotary shaft is rotatably arranged on the middle area of the two wide strip-shaped plates. The milling material driving device 133 is also preferably a motor, the milling material driving device 133 is disposed between the two narrow strip-shaped plates and above the rotating shaft, and the milling material driving device 133 is connected to the rotating shaft through a chain structure to drive the first rotating shaft to rotate, so that the whole fine separation mechanism 100 is more compact.

Further, the sifting mechanism 100 also includes a first dust cover 135. The first dust cover 135 is disposed on the first fixing frame 131 or the positioning plate 134, and is used for shielding a blanking area of the first conveyor belt 121 to reduce dust. Preferably, the first dust cover 135 includes a sealing portion and a material blocking portion disposed below the sealing portion, the sealing portion is disposed on the first fixing frame 131 to block the material brush 132, the material blocking portion is inclined downward, and a blanking gap is formed between the material blocking portion and the first conveyor belt 121. The particle brushes 132 may be made of a hard brush material arranged in rows along the circumferential direction.

Preferably, in the automatic feeding system 1 of the present embodiment, there are two sets of the subdividing mechanisms 100, and the two sets of the subdividing mechanisms 100 are respectively disposed at two ends of the first conveyor belt 121, so as to realize bidirectional feeding and improve subdividing efficiency and feeding efficiency.

Specifically, in this embodiment, the weighing hopper 230 is of a V-like structure as a whole, and the opposite side walls of the weighing hopper 230 are provided with movable doors 231 for discharging the materials in the weighing hopper 230 from two same directions, so as to "divide the material conveyed by one end of the first conveyor belt 121 into two". The first gate driving assembly comprises a connecting arm and a first driving cylinder 251, wherein one end of the connecting arm is connected with the side wall of the weighing hopper 230, the other end of the connecting arm is hinged with the non-output end of the first driving cylinder 251, and the output end of the first driving cylinder 251 is connected with the movable door 231. The two first gate control driving assemblies correspond to the movable gate 231 one by one and are used for driving the movable gate 231 to open for material receiving or close for material receiving.

In other embodiments, the overall shape of the weighing hopper 230 may not be limited to the V-like structure, and the number of the movable doors may be only 1, 3, 4, or the like, for example, and the plurality of movable doors 231 may be provided on the plurality of side walls of the weighing hopper 230, respectively. Correspondingly, there are a plurality of first gate-controlled driving assemblies, which are connected with the plurality of movable gates 231 in a one-to-one correspondence for discharging the materials in the weighing hoppers 230 from different directions.

Further, the automatic feeding system 1 of the present embodiment further includes two storage mechanisms 300. The two storing mechanisms 300 are respectively disposed at both ends of the first conveyor belt 121, and are disposed corresponding to the two weighing hoppers 230. The storage mechanism 300 comprises a storage container 310 and a second door-controlled driving assembly connected with the controller 500, the storage container 310 is arranged on the lower surface of the workbench 20, a feeding hole corresponding to the blanking hole is formed in the top of the storage container 310, an opening and closing door is arranged at the bottom of the storage container 310, and the second door-controlled driving assembly is connected with the opening and closing door and used for driving the opening and closing door to open to blank materials to the second conveyor belt 441 or close to store materials.

Preferably, one of the side walls of the magazine 310 is provided with a blanking buffer portion inclined toward the cavity. The second gate control driving assembly comprises a second rotating shaft, a gear, a second guide rail, a connecting plate and a second driving cylinder. On storage container 310 was rotationally located to the second pivot, the door was connected in the second pivot, and the gear cover was located in the second pivot. The second guide rail is arranged on the side wall of the material storage container 310, the connecting plate is arranged on the second guide rail and used for being in sliding fit with the second guide rail, the connecting plate is meshed with the gear through a rack, and the connecting plate is connected with the second driving cylinder and used for driving the second driving cylinder to move up and down to drive the opening and closing door to be opened and closed. Furthermore, the second door control driving assembly further comprises a connecting rod, each storage container 310 is provided with the second rotating shaft, the gear, the second guide rail and the connecting plate respectively, two ends of the connecting rod are connected with the connecting plates located on the two storage containers respectively, the connecting rod is connected with the second driving cylinder, and the fact that one second driving cylinder is used for driving the two storage containers to discharge materials simultaneously can be achieved.

In addition, the automatic feed system 1 of the present embodiment further includes two second dust covers and two third dust covers. Each second dust guard may house the scrap drive assembly 130 and each third dust guard may house the weighing mechanism 300 to form a sealed system to prevent contamination.

In this embodiment, it is preferable that the supporting frame body 420 has an elongated double-groove structure as a whole, the top of the supporting frame body is flush, and a sealing tape for preventing dust is disposed in an area between the two grooves. There are four second conveyor belts 441, and every two second conveyor belts 441 are distributed in one groove in a staggered manner. The number of the material storage containers in each material storage mechanism 300 is 2, and the 2 material storage containers correspond to the arrangement of the 2 movable doors respectively and are used for correspondingly receiving materials falling from the movable doors, so that the two parts of the materials are divided into four parts. In other embodiments, the number of the second conveyor belts 441 may be 1 or 4, and the plurality of second conveyor belts 441 are staggered in one of the grooves. The plurality of storage containers 331 are provided, and the plurality of storage containers correspond to the arrangement of the plurality of movable doors 231, and are used for correspondingly receiving the materials falling from the movable doors 231.

Referring further to fig. 9 and 10, in the present embodiment, the telescopic driving assembly preferably includes a driving screw 431, a connecting head, a driving gear and a telescopic driving motor 432. The bottom of braced frame body 420 is equipped with the support column, and on the support column was located to the connector, drive screw 431 passed through threaded structure with the connector and is connected, and flexible driving motor 432 is located on the mount pad, and flexible driving motor 432 passes through drive gear and connects drive screw 431.

Further, the telescopic feeding mechanism 400 further includes a light blocking sheet and a photoelectric position sensor. The light blocking sheet is disposed on the supporting frame 420. The photoelectric position sensor is arranged on the mounting seat or the transmission screw rod, and the photoelectric position sensor is connected with the controller 500 and used for regulating and controlling the telescopic stroke of the supporting frame body 420.

Further, the telescopic feeding mechanism 400 further includes a material returning hopper 422 for receiving the material with the weighing error, and the material returning hopper 422 is disposed at an end of the supporting frame 420. More preferably, a storage cabinet is disposed at the lower portion of the rack 10, and a waste recovery box is disposed at a discharge opening corresponding to the discharge hopper 422 in the rack 10.

Preferably, the second transfer driving assembly includes a second transfer belt 441, a transmission shaft rotatably provided on the supporting frame 420, an output shaft of the transmission shaft and the second transfer driving device 442 (preferably, a driving motor) connected by a belt, and a belt and a second transfer driving device 442 provided at an end of the supporting frame 420, so that the entire structure can be more compact.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. An automatic feed system, comprising:

a frame;

2. The automatic feed system of claim 1, wherein the weighing mechanism further comprises a first gate-controlled drive assembly;

the movable door is further arranged on the side wall, opposite to the weighing hopper, and the first door control driving assembly is arranged on the weighing hopper and connected with the movable door and used for driving the movable door to open to discharge materials or close to receive materials.

3. The automatic feeding system of claim 2, wherein said movable doors are plural, and said plural movable doors are respectively provided on plural side walls of said weighing hopper; correspondingly, the number of the first gate control driving assemblies is multiple, and the first gate control driving assemblies are connected with the movable gates in a one-to-one correspondence manner and are used for discharging materials in the weighing hopper from different directions.

4. The automated feeding system of claim 3, further comprising a storage mechanism; storage mechanism include storage container and with the second door accuse drive assembly that the controller is connected, storage container locates the lower surface of workstation, storage container's top be equipped with the corresponding feed inlet in unloading hole, storage container's bottom is equipped with the door of opening and shutting, second door accuse drive assembly connects the door of opening and shutting is used for the drive the door of opening and shutting open with the unloading extremely the second conveyer belt perhaps closes with the storage.

5. The automatic feeding system of claim 4, wherein the supporting frame body is a multi-groove structure having a long bar shape as a whole;

the second conveyor belt is provided with a plurality of second conveyor belts, and every two second conveyor belts are distributed in one groove in a staggered manner; the material storage container is provided with a plurality of material storage containers, and the material storage containers are respectively corresponding to the movable doors and used for correspondingly receiving materials falling from the movable doors.

6. The automatic feeding system of claim 4, wherein the fine distribution mechanism, the weighing mechanism and the telescopic feeding mechanism are provided in two sets, and are respectively provided corresponding to two ends of the first conveyor belt.

7. The automatic feeding system of claim 4, wherein the first gate control driving assembly comprises a connecting arm and a first driving cylinder, one end of the connecting arm is connected with the side wall of the weighing hopper, the other end of the connecting arm is hinged with the non-output end of the first driving cylinder, and the output end of the first driving cylinder is connected with the movable door; and/or

Second gate-controlled drive assembly includes that second pivot, gear, second guide rail, connecting plate and second drive actuating cylinder, the second pivot is rotationally located on the storage container, the second pivot is connected the door that opens and shuts, the gear housing is located in the pivot, the second guide rail is located on the lateral wall of storage container, the connecting plate is located on the second guide rail in order to be used for with second guide rail sliding fit, the connecting plate pass through the rack with the gear meshing, the connecting plate is connected first drive actuating cylinder is used for by first drive actuating cylinder drive reciprocate in order to drive the door that opens and shuts.

8. The automatic feeding system of any one of claims 1 to 7, wherein the telescopic driving assembly comprises a transmission screw, a connector, a transmission gear and a telescopic driving device, a support column is arranged at the bottom of the support frame, the connector is arranged on the support column, the transmission screw is connected with the connector through a threaded structure, the telescopic driving device is arranged on the mounting seat, and the telescopic driving device is connected with the transmission screw through the transmission gear; and/or

The second transmission driving assembly comprises a second transmission belt, a transmission shaft, a belt and a second transmission driving device, the transmission shaft is rotatably arranged on the supporting frame body, and the transmission shaft is connected with an output shaft of the second transmission driving device through the belt.

9. The automatic feeding system of claim 8, wherein the retractable feeding mechanism further comprises a light barrier and a photoelectric position sensor, the light barrier is disposed on the supporting frame, the photoelectric position sensor is disposed on the mounting seat or the transmission screw, and the photoelectric position sensor is connected to the controller for adjusting and controlling the retractable stroke of the supporting frame.

10. The automatic feed system of any one of claims 1 to 7, wherein the telescopic feeding mechanism further comprises a material returning hopper for receiving materials with weighing errors, the material returning hopper being provided at an end of the support frame; the lower part of frame is equipped with accomodates the cabinet body, correspond in the frame feed opening department of hopper is equipped with waste recovery box.