Food packaging plastic box conveying equipment with an automatic weighing and screening mechanism

Abstract

The present application discloses a conveying device for food packaging plastic boxes with an automatic weighing and screening mechanism, which relates to the technical field of conveying devices. The present application includes a frame on which a conveyor belt is installed, and a gravity sensor is installed on the conveyor belt. After the plastic boxes that do not meet the weight standard are screened through the cooperation of the gravity sensor and the screening rod, the plastic boxes enter the storage shell, and water is injected into the storage shell through a water pump, so that the water flow soaks the plastic boxes. When there are cracks or small damages on the plastic boxes, the drainage volume decreases and they will sink, while the intact plastic boxes will float on the water surface. They are pushed into the drainage shell by a pushing plate, and by shaking the drainage shell, the movement degree of the plastic boxes located inside it is increased, and the water inside the plastic boxes is shaken out to complete the operation. When the device is in use, it can not only screen out the plastic boxes that do not meet the weight standard but also screen out the damaged plastic boxes, increasing the practicability of the device.

Description

Technical Field

[0001] This application relates to the technical field of conveying equipment, and particularly to a conveying equipment for food packaging plastic boxes with an automatic weighing and screening mechanism. Background Art

[0002] When food packaging plastic boxes leave the factory, for quality inspection, they need to be weighed and screened to remove products with unqualified weights. Also, through weight screening, some broken plastic boxes with weights not meeting the standard can be removed.

[0003] When the existing weighing and screening machine conducts screening, when screening broken plastic boxes, it can only remove plastic boxes with large breaks and weights much lower than the standard. However, when the break on the plastic box is small and the weight of the plastic box is within the standard range, the existing weighing and screening machine cannot conduct screening, and subsequent manual inspection is required, which is rather troublesome in use.

[0004] Therefore, the present invention proposes a conveying equipment for food packaging plastic boxes with an automatic weighing and screening mechanism to improve this problem. Summary of the Invention

[0005] The purpose of this application is: to solve the problems in the above background art, this application provides a conveying equipment for food packaging plastic boxes with an automatic weighing and screening mechanism.

[0006] To achieve the above purpose, this application specifically adopts the following technical solutions:

[0007] A conveying equipment for food packaging plastic boxes with an automatic weighing and screening mechanism, including a frame on which a conveyor belt is installed, a gravity sensor is installed on the conveyor belt, a screening rod is rotatably installed on the frame, the screening rod is electrically connected to the gravity sensor, and further includes:

[0008] A storage shell, which is installed at the discharge end of the conveyor belt. The storage shell is provided with a water outlet and a water inlet. A water tank is installed on the frame, and a water pump is installed in the water tank. The water pump is connected to the water inlet through a connecting pipe;

[0009] A pushing member, which is installed on the storage shell. The pushing member includes a pushing plate slidably installed on the storage shell. A groove for accommodating the pushing plate is provided on the side wall of the storage shell. A driving rod is rotatably installed on the frame. The driving rod is connected to the conveyor belt roller through a pulley assembly. A rotating plate is installed at the free end of the driving rod. The rotating plate is connected to the pushing plate through a connecting member, so that when the conveyor belt roller rotates, the pushing plate is driven to slide;

[0010] A shielding plate, which is slidably installed on the storage shell. The shielding plate is used to block or unblock the water outlet;

[0011] The drain piece is installed at the moving end of the push plate. The drain piece includes an arc block and a drain shell which are integrally constructed from bottom to top. The drain shell is provided with a drain hole.

[0012] Furthermore, the connecting part includes a slider eccentrically installed on the rotating plate, a sliding frame slidably mounted on the frame and slidably matched with the slider, a rack is mounted on the sliding frame, a gear meshing with the rack is rotatably mounted on the frame, the number of teeth on the rack is less than or equal to half the number of teeth on the gear, an articulated rod is eccentrically hinged on the gear, the length of the articulated rod is greater than the radius of the rotating plate, an extension rod is mounted on the push plate, and the free end of the articulated rod is slidably hinged to the extension rod.

[0013] Furthermore, an expansion panel is installed on the free end of the push plate, and the lowest point of the expansion panel is lower than the height of the bottom of the inner wall of the groove. The storage shell includes an outer shell and an inner shell of integral structure. The water inlet is opened at the bottom of the inner wall of the inner shell, and the water outlet is opened at a position close to the bottom of the side wall of the inner shell. A support plate for supporting a baffle is installed on the inner shell, and the inner cavity of the outer shell is larger than the volume of the inner shell. A drain outlet connected to the sink is opened on the outer shell, and the baffle is slidably installed in the inner cavity of the outer shell. A pull rod is hinged on the baffle, and a connecting rod is slidably hinged on the extension rod through an elastic member. An auxiliary rod is hinged between the connecting rod and the pull rod, and the highest point of the connecting rod is higher than the bottom of the inner wall of the groove.

[0014] Furthermore, a mounting frame is arranged between the drain shell and the storage shell, a plurality of transport rollers are rotatably mounted on the mounting frame, a driving column is rotatably mounted on the mounting frame, one of the transport rollers is transmission-connected to the driving column via a pulley assembly, a disc is mounted on the end of the driving column, a spring telescopic rod is eccentrically mounted on the disc, a hard frame connected to the mounting frame is mounted on the drain shell, the hard frame and the drain shell are connected via a bellows, a pressure plate is mounted on the side wall of the drain shell, and an auxiliary spring in contact with the pressure plate is mounted on the mounting frame.

[0015] Furthermore, a plurality of conical blocks are mounted on the transport roller, the spacing between the conical blocks is smaller than the width of the plastic box, an auxiliary roller is mounted on the mounting frame, the auxiliary roller is located between the conical blocks on adjacent transport rollers, and a plurality of protrusions are mounted on the side wall of the auxiliary roller.

[0016] Furthermore, a sliding sleeve is installed on the mounting frame, a protruding rod is slidably installed in the sliding sleeve, and a lifting rod is installed on the protruding rod. When the spring telescopic rod conflicts with the lifting rod, the protruding rod is driven to slide in a direction away from the bottom of the mounting frame.

[0017] Furthermore, a unified housing is installed on the mounting frame. A sliding sleeve is installed on the unified housing, and the inner cavity of the sliding sleeve communicates with the inner cavity of the unified housing. A plurality of auxiliary sleeves communicating with the inner cavity thereof are installed on the unified housing. A secondary rod is slidably installed in the auxiliary sleeve. The secondary rods are connected by a transverse long rod, and the transverse long rod is connected to the protruding rod. A short rod is hinged to one end of the protruding rod and the secondary rod located inside the unified housing. A driving wheel is rotatably installed in the unified housing. The short rod is eccentrically hinged to the driving wheel. A fan blade is installed on the rotating shaft of the driving wheel. The unified housing and the water draining housing are connected by a pipeline.

[0018] Furthermore, the axis of the transport roller is perpendicular to the axis of the conveyor belt roller. An inclined block is installed at one end of the inner housing away from the pushing plate. An inclined plate facing the transport roller is also hinged to the inner housing. An arc-shaped plate is hinged to the bottom of the inclined plate. A cam for abutting against the arc-shaped plate is installed on the rotating shaft of one of the transport rollers.

[0019] Furthermore, the width of the unified housing is greater than the diameter of the driving wheel. Adjacent driving wheels are staggered on both sides of the longitudinal section along the width of the unified housing.

[0020] Furthermore, a sliding rod is slidably installed on the mounting frame. The auxiliary spring is sleeved outside the sliding rod. A hemispherical block connected to the auxiliary spring is installed at the top of the sliding rod. The auxiliary spring contacts the pressing plate through the hemispherical block.

[0021] The beneficial effects of the present application are as follows:

[0022] 1. After the plastic boxes that do not meet the weight standard are screened by the cooperation of the gravity sensor and the screening rod in the present application, the plastic boxes enter the storage housing. Water is injected into the storage housing by a water pump, so that the water flow soaks the plastic boxes. When there are cracks or small damages on the plastic boxes, the drainage volume decreases and they will sink, while the intact plastic boxes will float on the water surface. They are pushed into the water draining housing by the pushing plate. By shaking the water draining housing, the movement degree of the plastic boxes located inside it is increased, and the water inside the plastic boxes is shaken off to complete the operation. When the device is in use, it can not only screen out the plastic boxes that do not meet the weight standard but also screen out the damaged plastic boxes, increasing the practicability of the device.

[0023] 2. When the present application is in use, the swinging of the gear drives the articulated rod to push or pull the inner wall of the waist-shaped hole on the extension rod through the rod body thereon, so that the extension rod drives the pushing plate to reciprocally slide on the machine frame. When in use, it is convenient for the pushing plate to push the plastic boxes on the water surface.

[0024] 3. After the screening of this application is completed, pull the round rod so that the hoop can move together with the extension rod. At this time, the end of the connecting rod is pulled by the extension rod, and its side wall gradually contacts the side wall of the groove. The contact point acts as a fulcrum, causing the connecting rod to rotate. When the extension rod continues to slide, it also gradually pulls the auxiliary rod out of the housing and gradually rotates. Since the total length of the pull rod, the connecting rod, and the auxiliary rod located inside the housing is shortened, the baffle is pulled upward, thereby gradually removing the blockage of the water outlet, allowing the water flow in the inner housing to fall into the water tank through the drain port. When the push plate returns to its original position, the extension rod pulls the hoop back to its original position, also driving the pull rod, the connecting rod, and the auxiliary rod to rotate back to their original positions, causing the baffle to return to its original position, and the contact disk moves to the orifice, the contact spring returns to its original position, and the round rod is pulled back to its original position, releasing the contact between the round rod and the hoop, so that the extension rod and the hoop return to the sliding fit state, facilitating the next screening.

[0025] 4. When this application is in use, while the transport roller transports the plastic box, the plastic box falls into the drain housing through the hard frame. When the transport roller rotates, it also drives the drive column to rotate, causing the spring telescopic rod to move in a circular motion around the axis of the disk. When the telescopic end of the spring telescopic rod contacts the pressure plate, the drain housing tilts to this side and compresses the auxiliary spring. With the contact, the telescopic end of the spring telescopic rod gradually shortens, causing it to release the contact with the pressure plate. At this time, the auxiliary spring returns to its original position and causes the drain housing to shake through the guidance of the arc surface of the arc-shaped block, draining the plastic box located in the drain housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a three-dimensional structural schematic diagram of this application;

[0027] Figure 2 is a structural schematic diagram of the storage housing of this application;

[0028] Figure 3 is another structural schematic diagram of the storage housing of this application;

[0029] Figure 4 is a structural schematic diagram of the mounting frame and the draining component of this application;

[0030] Figure 5 is a schematic diagram of the upper structure of the mounting frame of this application;

[0031] Figure 6 is another schematic diagram of the upper structure of the mounting frame of this application;

[0032] Figure 7 is a structural schematic diagram of the auxiliary roller of this application;

[0033] Figure 8 is an exploded view of the structure between the extension rod and the baffle of this application;

[0034] Figure 9It is an exploded view of the structure on the mounting bracket of this application;

[0035] Figure 10 It is an exploded view of the structure inside the unified shell of this application;

[0036] Figure 11 It is a three-dimensional sectional view of the storage shell structure of this application;

[0037] Figure 12 It is a three-dimensional sectional view of the outer shell and the inner shell of this application;

[0038] Figure 13 It is a three-dimensional sectional view of the water draining part structure of this application;

[0039] Reference numerals: 1, frame; 101, conveyor belt; 102, gravity sensor; 103, screening rod; 2, storage shell; 201, water outlet; 202, water inlet; 203, water tank; 204, water pump; 205, connecting pipe; 206, outer shell; 207, inner shell; 208, lower water outlet; 209, pulling rod; 2010, connecting rod; 2011, auxiliary rod; 3, pushing member; 301, pushing plate; 302, groove; 303, driving rod; 304, extension rod; 305, rotating plate; 306, slider; 307, sliding frame; 308, rack; 309, gear; 3010, hinged rod; 4, shielding plate; 401, supporting plate; 5, water draining part; 501, arc-shaped block; 502, water draining shell; 503, water draining holes; 504, pressing plate; 505, auxiliary spring; 506, rigid frame; 6, expansion panel; 7, mounting bracket; 8, conveying roller; 9, driving column; 10, disc; 11, spring telescopic rod; 12, tapered block; 13, auxiliary roller; 14, convex block; 15, protruding rod; 16, sliding sleeve; 17, lifting rod; 18, unified shell; 19, driving wheel; 20, auxiliary rod; 21, horizontally long rod; 22, short rod; 23, fan blade; 24, inclined block; 25, inclined plate; 26, arc-shaped plate; 27, cam; 28, sliding rod; 29, hemispherical block; 30, auxiliary sleeve; 31, hoop; 32, round rod; 33, resisting spring; 34, resisting disc; 35, sliding groove. Detailed implementation manners

[0040] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of this application.

[0041] Embodiment 1

[0042] As Figure 1 - Figure 13As shown in the figure, the food packaging plastic box conveying device with an automatic weighing and screening mechanism proposed in the first embodiment of the present application includes a frame 1, on which a conveyor belt 101 is installed. A gravity sensor 102 is installed on the conveyor belt 101. A screening rod 103 is rotatably installed on the frame 1. The screening rod 103 is electrically connected to the gravity sensor 102. A terminal of the device is also provided on the frame 1. The gravity sensor 102 is located inside the conveyor belt 101, and its working principle is prior art. When the conveyor belt 101 transports plastic boxes, the gravity sensor 102 weighs the plastic boxes and controls the rotation of the screening rod 103. When unqualified plastic boxes pass through the screening rod 103, the screening rod 103 rotates to knock the plastic boxes off the conveyor belt 101. When the plastic boxes with qualified weight pass through the screening rod 103, the screening rod 103 does not rotate, enabling them to be continuously transported by the conveyor belt 101. It also includes:

[0043] A storage shell 2, which is installed at the discharging end of the conveyor belt 101. A water outlet 201 and a water inlet 202 are provided on the storage shell 2. A water tank 203 is installed on the frame 1. A water pump 204 is installed in the water tank 203. The water pump 204 is connected to the water inlet 202 through a connecting pipe 205. Water is stored in the water tank 203, and an observation port is provided on it for observing the water level in the water tank 203 and adding water to its interior. When the plastic boxes with qualified weight are transported by the conveyor belt 101 to the discharging end, the plastic boxes fall into the storage shell 2. Then, the water pump 204 pumps the water in the water tank 203 into the storage shell 2, making the plastic boxes soak in the water. If there are cracks or damages on the plastic boxes, the water can pass through the cracks or damages, reducing the drainage volume of the plastic boxes, and thus making them sink below the water surface, while the intact plastic boxes can float on the water surface;

[0044] A pushing member 3, which is installed on the storage shell 2. The pushing member 3 includes a pushing plate 301 slidably installed on the storage shell 2. A groove 302 for accommodating the pushing plate 301 is provided on the side wall of the storage shell 2. The highest water level of the storage shell 2 is the bottom of the inner wall of the groove 302. When the intact plastic boxes float on the water surface, they are pushed out of the storage shell 2 by the pushing of the pushing plate 301 for screening;

[0045] A driving rod 303 is rotatably installed on the frame 1. The driving rod 303 is connected to the roller of the conveyor belt 101 through a pulley assembly. A rotating plate 305 is installed at the free end of the driving rod 303. The rotating plate 305 is connected to the pushing plate 301 through a connecting member, so that when the roller of the conveyor belt 101 rotates, it drives the pushing plate 301 to slide. The connecting member can be a crank and connecting rod mechanism. The pulley assembly includes two pulleys and a belt. One of the pulleys is connected to the driving rod 303, and the other is connected to the roller of the conveyor belt 101. The belt is in transmission connection with the two pulleys, so that when the roller of the conveyor belt 101 rotates, it drives the driving rod 303 to rotate;

[0046] During use, when the conveyor belt 101 transports the plastic boxes, the rotating roller of the conveyor belt 101 drives the driving rod 303 to rotate, thereby causing the rotating plate 305 to rotate. When the rotating plate 305 rotates, through the cooperation of the connecting member, the pushing plate 301 slides reciprocally on the storage shell 2, thereby screening the plastic boxes;

[0047] The baffle plate 4 is slidably mounted on the storage shell 2. The baffle plate 4 is used to block or release the blocking of the water outlet 201. When the device is in a normal state, the baffle plate 4 blocks the water outlet 201. During the use of the device, the plastic boxes can be detected in batches. After a batch of plastic boxes are transported into the storage shell 2, the conveyor belt 101 continues to work. At this time, it is used to drive the pushing plate 301. Through the pushing of the pushing plate 301, the plastic boxes on the water surface are pushed away from the storage shell 2. Although the screening time is extended, more time can be given for the damaged plastic boxes to contact the water flow, enabling the intact plastic boxes to have time to float and the broken plastic boxes to have time to sink, thereby improving the detection accuracy. During the detection, when the plastic boxes on the water level are pushed away, the intact plastic boxes below them will continue to float. When there are no plastic boxes that continue to float after detecting for a period of time, slide the baffle plate 4 to release the blocking of the water outlet 201, so that the storage shell 2 discharges water and takes out the damaged plastic boxes at the bottom of the water for the next detection;

[0048] The water draining member 5 is installed at the moving end of the pushing plate 301. The water draining member 5 includes an arc-shaped block 501 and a water draining shell 502 which are integrally constructed from bottom to top. The water draining shell 502 is provided with water draining holes 503. After the plastic boxes are screened, they fall into the water draining shell 502. By pressing one side of the water draining shell 502, the water draining shell 502 tilts to one side. When the force applied to the water draining shell 502 is released, due to the guiding of the arc surface of the arc-shaped block 501 and the inertia of the water draining shell 502 itself, the water draining shell 502 swings to shake the plastic boxes inside it for draining water, increasing the mobility of the plastic boxes and facilitating the ejection of most of the water inside them;

[0049] One side of the water draining shell 502 is provided with an opening communicating with the outside, and an inclined plate body is installed inside the water draining shell 502. During use, when the water draining shell 502 shakes, the plastic boxes can gradually move to the outside of the water draining shell 502 through the inclined slope of the plate body, facilitating feeding;

[0050] Compared with the prior art, after screening out the plastic boxes that do not meet the weight standard through the cooperation of the gravity sensor 102 and the screening rod 103, the plastic boxes enter the storage shell 2. Water is injected into the storage shell 2 through the water pump 204, so that the water flow soaks the plastic boxes. When there are cracks or small damages on the plastic boxes, the drainage volume decreases and they will sink, while the intact plastic boxes will float on the water surface. They are pushed into the water drainage shell 502 by the pushing plate 301. By shaking the water drainage shell 502, the movement degree of the plastic boxes inside it is increased, and the water inside the plastic boxes is shaken off to complete the operation. When the device is in use, it can not only screen out the plastic boxes that do not meet the weight standard but also screen out the damaged plastic boxes, increasing the practicability of the device.

[0051] Embodiment 2

[0052] As Figure 3 shown, Embodiment 2 further discloses the connecting piece, the pushing piece 3 and the water drainage shell 502 on the basis of Embodiment 1. In Embodiment 2, the connecting piece includes a slider 306 eccentrically installed on the rotating plate 305. A sliding frame 307 slidably matched with the slider 306 is slidably installed on the frame 1. The sliding direction of the slider 306 in the sliding frame 307 is perpendicular to the sliding direction of the sliding frame 307 on the frame 1. Figure 1 Taking the main perspective, the sliding frame 307 slides horizontally, and the slider 306 slides vertically on the sliding frame 307. When in use, by rotating the rotating plate 305, the slider 306 is driven to make a circular motion around its axis. During the process, the displacement of the slider 306 in the vertical direction is satisfied by its sliding in the sliding frame 307, and its displacement in the horizontal direction will push the inner wall of the sliding frame 307, thereby causing the sliding frame 307 to slide reciprocally on the frame 1;

[0053] A rack 308 is installed on the sliding frame 307. A gear 309 meshing with the rack 308 is rotatably installed on the frame 1. The number of teeth on the rack 308 is less than or equal to half of the number of teeth on the gear 309. When the sliding frame 307 slides reciprocally, the rack 308 is driven to slide reciprocally, thereby driving the gear 309 to rotate. However, due to the fewer teeth on the rack 308, the gear 309 can only rotate half a turn at most. Through the reciprocal sliding of the sliding frame 307, the gear 309 swings reciprocally;

[0054] An articulated rod 3010 is eccentrically articulated on a gear 309. The length of the articulated rod 3010 is greater than the radius of the rotating plate 305. An extension rod 304 is installed on a push plate 301. The free end of the articulated rod 3010 is slidably articulated with the extension rod 304. When the gear 309 swings, it drives the end of the articulated rod 3010 articulated therewith to swing as well. A waist-shaped hole is provided on the extension rod 304. A rod body is installed at the end of the articulated rod 3010. The rod body is movably installed in the waist-shaped hole. The rod body can slide in the waist-shaped hole and can also rotate along its own axis. During use, the swing of the gear 309 drives the articulated rod 3010 to swing. The rod body on the articulated rod 3010 pushes or pulls the inner wall of the waist-shaped hole on the extension rod 304, so that the extension rod 304 drives the push plate 301 to reciprocate on the frame 1. During use, it is convenient for the push plate 301 to push the plastic box located on the water surface;

[0055] During use, the length of the articulated rod 3010 is relatively long, so that the movement path of the extension rod 304 is extended, and thus the stroke of the push plate 301 during sliding is increased.

[0056] Such as Figure 2 、 Figure 8 、 Figure 11 and Figure 12 As shown, in the second embodiment, an expansion panel 6 is installed at the free end of the push plate 301. The lowest point height of the expansion panel 6 is lower than the height of the bottom of the inner wall of the groove 302. Part of the plate body of the expansion panel 6 is below the water surface, which is convenient for increasing the contact area with the plastic box during use, so that it can better push the plastic box;

[0057] The storage shell 2 includes an outer shell 206 and an inner shell 207 which are integrally constructed. The water inlet 202 is opened at the bottom of the inner wall of the inner shell 207. A one-way valve is installed in the water inlet 202, so that the water flow can only flow from the water inlet 202 into the inner shell 207 and cannot return to the water tank 203 by gravity. During use, when the plastic boxes are stacked in the inner shell 207, filling water from below, compared with filling water from above, will not cause the plastic boxes with openings facing up to be filled with water in advance, resulting in slower floating speed, increasing the floating speed of the intact plastic boxes, and thus improving the detection efficiency;

[0058] The water outlet 201 is opened at a position close to the bottom of the side wall of the inner shell 207. The water outlet 201 has a certain distance from the bottom of the inner shell 207, so that even when the baffle 4 is opened to drain the water in the inner shell 207, part of the water will be retained in the inner shell 207. When the plastic box falls into the inner shell 207, it is buffered by the water flow at the bottom of the inner shell 207, reducing the possibility of damage to the plastic box caused by knocking during falling, and increasing the practicability of the device;

[0059] A tray 401 for the bracket baffle 4 is installed on the inner shell 207. The inner cavity of the outer shell 206 is larger than the volume of the inner shell 207. A drain outlet 208 communicating with the water tank 203 is opened on the outer shell 206. During use, when the baffle 4 releases the occlusion of the water outlet 201, the discharged water will fall back into the water tank 203 from the drain outlet 208 under the action of gravity, enabling the water flow to circulate, increasing the utilization rate of water. A rubber pad is installed on the baffle 4, as Figure 8 shown, for inserting into the water outlet 201. During the process of the baffle 4 falling onto the tray 401, the rubber pad on the baffle 4 is compressed. When the baffle 4 falls onto the tray 401, the rubber pad is inserted into the water outlet 201, and the baffle 4 completes the occlusion of the water outlet 201. By setting the rubber pad, the sealing performance of the inner shell 207 is increased;

[0060] The baffle 4 is slidably installed in the inner cavity of the outer shell 206. A pull rod 209 is hinged on the baffle 4. A connecting rod 2010 is slidably hinged on the extension rod 304 through a tensioning member. An auxiliary rod 2011 is hinged between the connecting rod 2010 and the pull rod 209. The highest point of the connecting rod 2010 is higher than the bottommost part of the inner wall of the groove 302. The tensioning member includes a hoop 31 slidably installed on the extension rod 304. A round rod 32 is movably inserted into the hoop 31. The round rod 32 also movably penetrates through the end of the connecting rod 2010, so that the hoop 31 is hinged to the auxiliary rod 2011. A resisting spring 33 is installed between the round rod 32 and the hoop 31. A resisting disk 34 is installed on the round rod 32. Sliding grooves 35 slidably mating with the round rod 32 are opened on both the frame 1 and the inner shell 207. A hole for the resisting disk 34 to pass through is opened on the frame 1. The diameter of the resisting disk 34 is larger than the width of the sliding groove 35. Since the inner cavity of the outer shell 206 is larger than the volume of the inner shell 207, space is provided for the rotation of the auxiliary rod 2011, the pull rod 209, and the connecting rod 2010, improving the feasibility of the device. The side wall of the baffle 4 contacts the inner wall of the outer shell 206, restricting its sliding direction so that it can only slide linearly in the vertical direction;

[0061] During screening, since the hoop 31 is slidably mated with the extension rod 304, the sliding of the extension rod 304 will not drive the hoop 31 to move. After screening is completed, the round rod 32 is pulled so that the resisting disk 34 passes through the hole. At this time, the resisting spring 33 is compressed, causing the free end of the round rod 32 to contact the hoop 31, resulting in the hoop 31 contacting the extension rod 304, so that the extension rod 304 drives the hoop 31 to slide together. During the process, the round rod 32 enters the sliding groove 35 and slides in the sliding groove 35, and the side of the sliding groove 35 blocks the resisting disk 34, enabling the round rod 32 to maintain the state of contacting the hoop 31. When the push plate 301 slides, the sliding of the round rod 32 in the sliding groove 35 meets the movement degree of the device, improving the feasibility of the device;

[0062] When the screening is completed, the round rod 32 is pulled so that the hoop 31 can move with the extension rod 304. At this time, the end of the connecting rod 2010 is pulled by the extension rod 304, and its side wall gradually contacts the side wall of the groove 302, and the contact point acts as a fulcrum, so that the connecting rod 2010 rotates to pull the auxiliary rod 2011 and the pulling rod 209 upward. When the extension rod 304 continues to slide, the auxiliary rod 2011 is gradually pulled out of the shell 206 and gradually rotates. Since the overall length of the pulling rod 209, the connecting rod 2010 and the auxiliary rod 2011 inside the shell 206 is shortened , pull the baffle plate 4 upward, thereby gradually releasing the obstruction to the water outlet 201, so that the water flow in the inner shell 207 falls into the water tank 203 through the drain port 208. When the push plate 301 is reset, the extension rod 304 pulls the hoop 31 to reset, and also drives the pulling rod 209, the connecting rod 2010 and the auxiliary rod 2011 to rotate and reset, so that the baffle plate 4 is reset, and the resistance plate 34 moves to the channel, the resistance spring 33 is reset, and the round rod 32 is pulled to reset, and the resistance between the round rod 32 and the hoop 31 is released, so that the extension rod 304 and the hoop 31 are restored to a sliding fit state, which is convenient for the next screening.

[0063] like Figure 4 , Figure 5 and Figure 13 As shown, in the second embodiment, a mounting frame 7 is provided between the drain shell 502 and the storage shell 2, and a plurality of transport rollers 8 are rotatably mounted on the mounting frame 7. When in use, after the push plate 301 pushes the plastic box out of the inner shell 207, it falls onto the transport roller 8. The rotation of the transport roller 8 drives the plastic box on the transport roller 8 to move;

[0064] A driving column 9 is rotatably mounted on the mounting frame 7, wherein one of the transport rollers 8 is connected to the driving column 9 through a pulley assembly, wherein the pulley assembly comprises two pulleys and a belt, wherein one pulley is connected to the rotating shaft of the transport roller 8, and the other pulley is connected to the driving column 9, and the belt is used to connect the two pulleys, so that when the transport roller 8 rotates, the driving column 9 can also be driven to rotate;

[0065] A disc 10 is installed at the end of the driving column 9, and a spring telescopic rod 11 is eccentrically installed on the disc 10. The telescopic end of the spring telescopic rod 11 faces a position away from the center of the disc 10. A hard frame 506 connected to the mounting frame 7 is installed on the drain shell 502. The hard frame 506 and the drain shell 502 are connected by a bellows. When in use, when the drain shell 502 is shaking, the position of the hard frame 506 remains unchanged, so that the plastic box can fall into the drain shell 502 better. The deformation of the bellows satisfies the shaking of the drain shell 502, which increases the feasibility of the device;

[0066] A pressing plate 504 is installed on the side wall of the water draining shell 502, and an auxiliary spring 505 in contact with the pressing plate 504 is installed on the mounting rack 7. During use, when the transport roller 8 transports the plastic box, the plastic box falls into the water draining shell 502 through the hard frame 506. When the transport roller 8 rotates, it also drives the driving column 9 to rotate, causing the spring telescopic rod 11 to perform a circular motion around the axis of the disc 10. When the telescopic end of the spring telescopic rod 11 abuts against the pressing plate 504, the water draining shell 502 tilts to this side and compresses the auxiliary spring 505. As the abutting force gradually increases, the telescopic end of the spring telescopic rod 11 gradually shortens through the arc-shaped structure at its end, so that it disengages from the pressing plate 504. At this time, the auxiliary spring 505 resets and causes the water draining shell 502 to shake through the guiding of the arc-shaped surface of the arc-shaped block 501, draining the plastic box located in the water draining shell 502;

[0067] Wherein, driving columns 9 are installed on both sides of the mounting rack 7, but there are clamps between the spring telescopic rods 11 of the discs 10 on both sides. For example, when the telescopic end of the spring telescopic rod 11 on one side is in the vertically upward direction, the telescopic end of the spring telescopic rod 11 on the other side is in the vertically downward direction, so that the spring telescopic rods 11 can alternately abut against both sides of the water draining shell 502, increasing the shaking frequency of the water draining shell 502, and thus improving the water draining effect of the water draining shell 502.

[0068] Such as Figure 4 、 Figure 5 And Figure 7 As shown in the second embodiment, a plurality of tapered blocks 12 are installed on the transport roller 8, and the distance between the tapered blocks 12 is less than the width of the plastic box. An auxiliary roller 13 is installed on the mounting rack 7, and the auxiliary roller 13 is located between the tapered blocks 12 on the adjacent transport rollers 8. A plurality of convex blocks 14 are installed on the side wall of the auxiliary roller 13. During use, when the plastic box falls onto the transport roller 8, due to the limitation of the shape of the tapered blocks 12, the plastic box falling onto the transport roller 8 is guided by the inclined surface of the tapered blocks 12, causing the plastic box to tilt and not be in a flat state, so that the plastic box can be initially drained while being transported. And when the plastic box is transported past the auxiliary roller 13, the convex blocks 14 on it come into contact with the plastic box, causing the convex blocks 14 to push the plastic box, increasing the movement degree of the plastic box, so that the plastic box has an upward and downward movement trend while being transported, and thus shaking the water on the plastic box, improving the water draining effect of the device on the plastic box.

[0069] Such as Figure 5 And Figure 9As shown in the figure, in the second embodiment, a sliding sleeve 16 is installed on the mounting bracket 7. A protruding rod 15 is slidably installed inside the sliding sleeve 16. A lifting rod 17 is installed on the protruding rod 15. When the spring telescopic rod 11 abuts against the lifting rod 17, it drives the protruding rod 15 to slide in a direction away from the bottom of the mounting bracket 7. During use, when the disc 10 drives the spring telescopic rod 11 to rotate, it will also abut against the lifting rod 17 and lift the lifting rod 17 and the protruding rod 15 upward. When the lifting rod 17 slides to the maximum limit, the telescopic end of the spring telescopic rod 11 gradually shortens to release the abutment with the lifting rod 17, and the protruding rod 15 falls under the influence of gravity. During use, the protruding rod 15 reciprocally slides vertically in the gap between the transport roller 8 and the auxiliary roller 13 to push the plastic box, further increasing the mobility of the plastic box on the transport roller 8, thereby improving the water drainage effect of the device.

[0070] Embodiment Three

[0071] As Figure 1 - Figure 13 As shown in the figure, Embodiment Three further discloses the present application on the basis of Embodiment Two. In Embodiment Three, a unified shell 18 is installed on the mounting bracket 7. The sliding sleeve 16 is installed on the unified shell 18 and the inner cavity of the sliding sleeve 16 communicates with the inner cavity of the unified shell 18. A plurality of auxiliary sleeves 30 communicating with its inner cavity are installed on the unified shell 18. A secondary rod 20 is slidably installed inside the auxiliary sleeve 30. The secondary rods 20 are connected by a horizontal long rod 21, and the horizontal long rod 21 is connected to the protruding rod 15. During use, the protruding rod 15 and the secondary rod 20 are connected by the horizontal long rod 21, increasing the overall weight, and thus increasing the gravity it receives;

[0072] One end of the protruding rod 15 and the secondary rod 20 located inside the unified shell 18 is hinged with a short rod 22. A driving wheel 19 is rotatably installed inside the unified shell 18. The short rod 22 is eccentrically hinged with the driving wheel 19. A fan blade 23 is installed on the rotating shaft of the driving wheel 19. The unified shell 18 is connected to the water drainage shell 502 through a pipeline. A crank-link structure is formed among the protruding rod 15 or the secondary rod 20, the short rod 22, and the driving wheel 19. During use, when the protruding rod 15 and the secondary rod 20 fall under gravity or are lifted by the lifting rod 17, it drives the whole of the protruding rod 15 and the secondary rod 20 to reciprocate, thereby driving the driving wheel 19 to rotate, causing the fan blade 23 to rotate, generating an air flow towards the water drainage shell 502, and then guiding the air flow into the water drainage shell 502 through the pipeline to blow the plastic box located inside the water drainage shell 502, further improving the separation effect between the plastic box and the water on it.

[0073] In the third embodiment, the axis of the transport roller 8 is perpendicular to the axis of the roller of the conveyor belt 101. An inclined block 24 is installed at one end of the inner shell 207 away from the push plate 301. An inclined plate 25 facing the transport roller 8 is also hinged on the inner shell 207. An arc-shaped plate 26 is hinged at the bottom of the inclined plate 25. A cam 27 for abutting against the arc-shaped plate 26 is installed on the rotating shaft of one of the transport rollers 8. When the plastic box is pushed by the push plate 301, the inclined block 24 guides the plastic box to better separate from the inner shell 207, and through the guidance of the inclined plate 25, the plastic box moves onto the transport roller 8. The transport direction of the transport roller 8 is perpendicular to the transport direction of the conveyor belt 101. First, it reduces the overall length of the device and the space occupancy rate of the device. Second, if the transport directions of the two are the same, when the plastic box directly falls onto the transport roller 8, the landing positions are the same, making the plastic boxes relatively concentrated on the transport roller 8, which may cause the water on the upper plastic box to fall into the lower plastic box, resulting in a poor separation effect between the plastic box and the water on it. However, through the guidance of the inclined plate 25, when the transport roller 8 rotates, it drives the cam 27 to approach the arc-shaped plate 26, causing the inclined plate 25 to rotate and its slope to change, so that the plastic boxes moving onto the inclined plate 25 at different times will be guided to different landing points by the inclined plate 25, making the plastic boxes more dispersed on the transport roller 8, enabling the plastic boxes to drain water smoothly during transportation.

[0074] In the third embodiment, the width of the unified shell 18 is greater than the diameter of the driving wheel 19. The adjacent driving wheels 19 are staggered on both sides of the longitudinal section of the width of the unified shell 18, as Figure 10 shown. When in use, it reduces the blockage of the air flow generated by the driving wheel 19 in the front to the fan blade 23 in the rear, increasing the feasibility of the device.

[0075] In the third embodiment, a sliding rod 28 is slidably installed on the mounting bracket 7. The auxiliary spring 505 is sleeved outside the sliding rod 28. When in use, the inner wall of the auxiliary spring 505 is blocked by the sliding rod 28, enabling it to undergo elastic deformation only along its own axis direction, increasing the stability of the auxiliary spring 505 during deformation;

[0076] A hemispherical block 29 connected to the auxiliary spring 505 is installed at the top of the sliding rod 28. The auxiliary spring 505 contacts the pressure plate 504 through the hemispherical block 29. When the pressure plate 504 is pushed by the spring telescopic rod 11, it contacts the bottom of the pressure plate 504 through the hemispherical block 29, and its arc surface can abut against the pressure plate 504 more smoothly, reducing the wear during the abutment between the two and increasing the practicality of the device.

[0077] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but rather to the broadest scope consistent with the principles and novel features disclosed herein.

Claims

1. A food packaging plastic box conveying device with an automatic weighing and screening mechanism, comprising a frame (1) on which a conveyor belt (101) is installed, a gravity sensor (102) is installed on the conveyor belt (101), and a screening rod (103) is rotatably installed on the frame (1). The screening rod (103) is electrically connected to the gravity sensor (102), and is characterized in that, Further included are: A storage shell (2), which is installed at the discharging end of the conveyor belt (101). A water outlet (201) and a water inlet (202) are provided on the storage shell (2). A water tank (203) is installed on the frame (1), and a water pump (204) is installed in the water tank (203). The water pump (204) is connected to the water inlet (202) through a connecting pipe (205); A pushing member (3), which is installed on the storage shell (2). The pushing member (3) includes a pushing plate (301) slidably installed on the storage shell (2). A groove (302) for accommodating the pushing plate (301) is provided on the side wall of the storage shell (2). A driving rod (303) is rotatably installed on the frame (1). The driving rod (303) is connected to the roller of the conveyor belt (101) through a pulley assembly. A rotating plate (305) is installed at the free end of the driving rod (303). The rotating plate (305) is connected to the pushing plate (301) through a connecting member, so that when the roller of the conveyor belt (101) rotates, the pushing plate (301) is driven to slide. An extension rod (304) is installed on the pushing plate (301); A shielding plate (4), which is slidably installed on the storage shell (2). The shielding plate (4) is used to shield or release the shielding of the water outlet (201). The storage shell (2) includes an integrally formed outer shell (206) and an inner shell (207). The water inlet (202) is provided at the bottom of the inner wall of the inner shell (207), and the water outlet (201) is provided at a position near the bottom of the side wall of the inner shell (207). A support plate (401) for supporting the shielding plate (4) is installed on the inner shell (207). A water drain port (208) communicating with the water tank (203) is provided on the outer shell (206). The shielding plate (4) is slidably installed in the inner cavity of the outer shell (206). A pulling rod (209) is hinged on the shielding plate (4). A connecting rod (2010) is slidably hinged on the extension rod (304) through a tensioning member. An auxiliary rod (2011) is hinged between the connecting rod (2010) and the pulling rod (209). The highest point of the connecting rod (2010) is higher than the bottom of the inner wall of the groove (302); A water draining member (5), which is installed at the moving end of the pushing plate (301). The water draining member (5) includes an arc-shaped block (501) and a water draining shell (502) integrally formed from bottom to top. Drainage holes (503) are provided on the water draining shell (502).

2. The food packaging plastic box conveying device with an automatic weighing and screening mechanism according to claim 1, characterized in that The connecting member comprises a slider (306) eccentrically mounted on the rotating plate (305); a slide frame (307) slidably mounted on the frame (1) and slidably matched with the slider (306); a rack (308) mounted on the slide frame (307); a gear (309) rotatably mounted on the frame (1) and meshing with the rack (308); the number of teeth on the rack (308) is less than or equal to half the number of teeth on the gear (309); a hinged rod (3010) is eccentrically hinged on the gear (309); the length of the hinged rod (3010) is greater than the radius of the rotating plate (305); and the free end of the hinged rod (3010) is slidably hinged to the extension rod (304).

3. The food packaging plastic box conveying device with an automatic weighing and screening mechanism according to claim 2, wherein, An expansion panel (6) is mounted on the free end of the push plate (301), and the lowest point of the expansion panel (6) is lower than the height of the bottom of the inner wall of the groove (302).

4. The food packaging plastic box conveying device with an automatic weighing and screening mechanism according to claim 3, characterized in that, A mounting frame (7) is arranged between the drain shell (502) and the storage shell (2), a plurality of transport rollers (8) are rotatably mounted on the mounting frame (7), a driving column (9) is rotatably mounted on the mounting frame (7), one of the transport rollers (8) is connected to the driving column (9) by a pulley assembly, a disc (10) is mounted at the end of the driving column (9), a spring telescopic rod (11) is eccentrically mounted on the disc (10), a hard frame (506) connected to the mounting frame (7) is mounted on the drain shell (502), the hard frame (506) and the drain shell (502) are connected by a bellows, a pressure plate (504) is mounted on the side wall of the drain shell (502), and an auxiliary spring (505) in contact with the pressure plate (504) is mounted on the mounting frame (7).

5. The food packaging plastic box conveying device with an automatic weighing and screening mechanism according to claim 4, characterized in that A plurality of conical blocks (12) are mounted on the transport roller (8), the spacing between the conical blocks (12) being smaller than the width of the plastic box; an auxiliary roller (13) is mounted on the mounting frame (7), the auxiliary roller (13) being located between the conical blocks (12) on adjacent transport rollers (8); and a plurality of protrusions (14) are mounted on the side wall of the auxiliary roller (13).

6. The food packaging plastic box conveying device with an automatic weighing and screening mechanism according to claim 5, characterized in that A sliding sleeve (16) is mounted on the mounting frame (7), a protruding rod (15) is slidably mounted in the sliding sleeve (16), and a lifting rod (17) is mounted on the protruding rod (15). When the spring telescopic rod (11) contacts the lifting rod (17), the protruding rod (15) is driven to slide in a direction away from the bottom of the mounting frame (7).

7. The food packaging plastic box conveying device with an automatic weighing and screening mechanism according to claim 6, characterized in that, A unified housing (18) is installed on the mounting bracket (7). A sliding sleeve (16) is installed on the unified housing (18), and the inner cavity of the sliding sleeve (16) is communicated with the inner cavity of the unified housing (18). A plurality of auxiliary sleeves (30) communicated with the inner cavity thereof are installed on the unified housing (18). A secondary rod (20) is slidably installed in the auxiliary sleeve (30). The secondary rods (20) are connected by a transverse long rod (21), and the transverse long rod (21) is connected to the protruding rod (15). One end of the protruding rod (15) and the secondary rod (20) located inside the unified housing (18) are hinged with a short rod (22). A driving wheel (19) is rotatably installed in the unified housing (18). The short rod (22) is eccentrically hinged to the driving wheel (19). A fan blade (23) is installed on the rotating shaft of the driving wheel (19). The unified housing (18) is connected to the water draining housing (502) through a pipeline.

8. The food packaging plastic box conveying device with an automatic weighing and screening mechanism according to claim 7, characterized in that, The axis of the conveying roller (8) is perpendicular to the axis of the roller of the conveyor belt (101). An inclined block (24) is installed at one end of the inner housing (207) away from the pushing plate (301). An inclined plate (25) facing the conveying roller (8) is also hinged on the inner housing (207). An arc-shaped plate (26) is hinged at the bottom of the inclined plate (25). A cam (27) for contacting the arc-shaped plate (26) is installed on the rotating shaft of one of the conveying rollers (8).

9. The food packaging plastic box conveying device with an automatic weighing and screening mechanism according to claim 8, characterized in that, The width of the unified housing (18) is greater than the diameter of the driving wheel (19). The adjacent driving wheels (19) are staggered on both sides of the longitudinal section along the width of the unified housing (18).

10. The food packaging plastic box conveying device with an automatic weighing and screening mechanism according to claim 9, characterized in that, A sliding rod (28) is slidably installed on the mounting bracket (7). The auxiliary spring (505) is sleeved outside the sliding rod (28). A hemispherical block (29) connected to the auxiliary spring (505) is installed at the top of the sliding rod (28). The auxiliary spring (505) contacts the pressing plate (504) through the hemispherical block (29).

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