CN205770322U - Minitype fruits box packing machine - Google Patents

Abstract

A kind of minitype fruits box packing machine, including frame, inhales case structure, sponge feeding mechanism, feeding conveyor structure, linkage temporary storage mechanism and automatic cover case structure, inhales case structure and includes rising cylinder, sucker and plastic casing storage rack；Sponge feeding mechanism includes frame, charging cylinder, T-shaped push pedal, lifting platform and in order to the lifting assembly driving lifting platform to move up and down；Feeding conveyor structure includes feed hopper, arch bridge and conveyer belt mechanism, and the outlet of feed hopper is connected with arch bridge highest point, and arch bridge exit is connected with conveyer belt mechanism；Linkage temporary storage mechanism includes frame, pushing block, slide block, optical axis, oscillating bearing, connecting rod, Horizontal axle bearing, pole, swinging axle and charging inclined-plane；Automatic cover case structure includes frame, track, contacts assembly and cylinder.This utility model provides the minitype fruits box packing machine that a kind of cost of labor is low, labor intensity is little, work efficiency is high.

Description

Small fruit cartoning machine

technical field

The utility model relates to a small fruit cartoning machine.

Background technique

In recent years, with the popularization of online shopping and the improvement of people's living standards, more and more people are

Buy fresh small fruits, which are in great demand in the market. After the online transaction, the seller must properly package the small fruit for express delivery, and avoid damage on the way. Therefore, it is very necessary to carry out proper anti-shock, anti-collision and fresh-keeping packaging for small fruits. However, the packaging used for express delivery of small fruits is complex in form, with many packaging materials and complicated packaging steps, which is not conducive to the smooth packaging of large quantities by online store personnel. However, there is no automatic equipment for small fruit packaging in China. If a large number of small fruits are packaged manually, a large number of workers must be hired, resulting in high labor costs for online stores.

Contents of the invention

In order to overcome the shortcomings of high labor cost, high labor intensity and low work efficiency of the existing fruit packaging methods, the utility model provides a small fruit box packing machine with low labor cost, low labor intensity and high work efficiency.

The technical scheme that the utility model solves its technical problem adopts is:

A small fruit boxing machine, including a frame, a suction box mechanism, a sponge feeding mechanism, a feeding conveying mechanism, a linkage temporary storage mechanism and an automatic box cover mechanism, wherein,

The suction box mechanism includes a rising cylinder, a suction cup and a plastic box storage rack, the telescoping rod of the lifting cylinder is connected with a suction cup bracket, a suction cup is installed on the suction cup bracket, and the plastic box storage rack is located above the suction cup;

The sponge feeding mechanism includes a feeding cylinder, a T-shaped push plate, a lifting platform, and a lifting assembly for driving the lifting platform to move up and down. The end of the telescopic rod of the feeding cylinder is connected to the T-shaped pushing plate. The T-shaped push plate is located above the lifting platform, the sponge to be fed is stacked up and down on the lifting platform, and side baffles are arranged on both sides of the lifting platform;

The feed conveying mechanism includes a feed hopper, an arched bridge and a conveyor belt mechanism, the outlet of the feed hopper is connected to the highest point of the arched bridge, and the outlet of the arched bridge is connected to the conveyor belt mechanism;

The linkage temporary storage mechanism includes a push block, a slide block, an optical shaft, a joint bearing, a connecting rod, a horizontal bearing seat, a pole, a swing shaft and a feeding inclined plane, and the push block is movably installed on the frame, The push block cooperates with the slider, the slider is movably set on the optical axis, the compression spring is set on the optical axis, the joint bearing is installed on the slider, and the joint bearing is connected to the connecting shaft. The lower end of the rod is connected, the upper end of the connecting rod is connected with the upper end of the strut through a horizontal bearing seat, the lower end of the strut is linked with the swing shaft, and a feeding slope is fixedly installed on the swing shaft;

The automatic box cover mechanism includes a track, a top touch assembly and a roller. The fruit box to be covered is movably located on the track, and the top touch assembly is arranged below the track. The top touch assembly includes a top touch cylinder and a On the top block of the top-touch fruit box lid, the top-touch cylinder is installed on the frame, and the top block is installed on the telescopic rod of the top-touch cylinder; the roller is arranged above the track, and the roller and the moving guide rail The distance between them is the height of the fruit box after the lid is closed; along the moving direction of the fruit box, the top contact assembly is located behind the roller.

Further, the track is fixedly installed on the frame, and a shift fork is arranged on the side of the track to push the fruit box to move, and the shift fork is connected to a movable U-shaped plate, and the movable U-shaped plate is installed on the poleless The rodless cylinder is installed on the mobile platform, the mobile platform is connected with the linear flange, the linear flange is connected with the guide optical axis, and the mobile platform is connected with the piston rod of the lifting cylinder. connect.

The feeding hopper includes a bottom plate and two side plates, a driving roller is arranged behind the feeding hopper, the rotating shaft of the driving roller is connected with the output shaft of the stepping motor, and the feeding cloth is wound on the driving roller, The outer end of the feed cloth is fixed to the top of the arched bridge;

The conveyor belt mechanism includes a conveyor belt and a feeding slope, the conveyor belt is connected to a transmission assembly for driving the conveyor belt, the outlet of the arched bridge is connected to the inlet of the conveyor belt, and the outlet of the conveyor belt is connected to the conveyor belt. The inlets of the feeding slopes are connected, and the outlets of the feeding slopes are located above the plastic box station.

Still further, in the sponge lifting feeding mechanism, the lifting assembly includes a ratchet mechanism and a synchronous pulley mechanism, and the ratchet mechanism includes a rocker, a ratchet, a driving pawl and a stop pawl, and the upper end of the rocker is provided with There are rollers, the lower end of the rocker is installed on the lower driving shaft, the ratchet is installed on the lower driving shaft, the rocker is equipped with an active pawl, the active pawl cooperates with the ratchet, the The ratchet is also matched with the stop pawl, the telescoping rod bottom of the feed cylinder is provided with a push block, the push block cooperates with the roller, a return spring is installed on the rocking bar, the stop pawl, The return spring is installed on the frame;

The synchronous pulley mechanism includes a synchronous pulley, a synchronous belt and a slider. The two ends of the lower drive shaft are equipped with a synchronous pulley, and the two ends of the upper drive shaft are also equipped with a synchronous pulley. The upper and lower two synchronous belts on the same side The wheel is fitted with a synchronous belt, and the synchronous belt is fixedly connected with the slider, and the slider is fixedly connected with the lifting platform, and the slider can be slid up and down and set on the guide light axis.

There are four guiding light axes, and the four guiding light axes form a square, and two sliders are fixedly connected to the timing belts on both sides respectively.

The beneficial effects of the utility model are mainly manifested in that instead of manual work, the automatic packing of small fruits is fully realized, the process is complete, time is saved, and the packing efficiency is greatly improved.

Description of drawings

Figure 1 is a schematic diagram of a small fruit cartoning machine.

Figure 2 is a side view of the whole machine and a partially enlarged view.

Fig. 3 is a structural diagram of a small fruit feeding mechanism.

Fig. 4 is a structural diagram of the feeding mechanism of the suction box.

Fig. 5 is a structural diagram of the sponge feeding mechanism.

Fig. 6 is a structural diagram of the sponge feeding mechanism.

Fig. 7 is an overall view of the linkage temporary storage mechanism (with a shift fork).

Fig. 8 is a partially enlarged view of the linkage temporary storage mechanism.

Fig. 9 is a structural schematic diagram of the linkage temporary storage mechanism.

Fig. 10 is a structural diagram of the mechanism for shifting the fork to move the cover box.

Fig. 11 is a schematic diagram of the first stage of the drum cover box.

Fig. 12 is a schematic diagram of the second stage of the drum cover box.

Fig. 13 is a schematic diagram of the third stage of the drum cover box.

detailed description

Below in conjunction with accompanying drawing, the utility model is further described.

Referring to Figures 1 to 13, a small fruit boxing machine includes a frame, a suction box mechanism, a sponge feeding mechanism, a feeding conveying mechanism, a linkage temporary storage mechanism and an automatic box cover mechanism, wherein,

The suction box mechanism includes a rising cylinder 601, a suction cup 604 and a plastic box storage rack 607. The telescoping rod of the rising cylinder 601 is connected with a suction cup support 602, and a suction cup 603 is installed on the suction cup support 602. The plastic box storage The frame 607 is located above the suction cup 603;

Described sponge feeding mechanism comprises frame 120, feeding cylinder 103, T-shaped push plate 107, lifting platform 106 and the lifting assembly for driving lifting platform to move up and down, the end of the telescoping link of described feeding cylinder 103 and The T-shaped push plate 107 is connected, and the T-shaped push plate 107 is located above the lifting platform 106. The sponge to be fed is stacked on the lifting platform 106 up and down. The two sides of the lifting platform 106 are arranged with side surfaces. Baffle 105;

The feed conveying mechanism includes a feed hopper, an arched bridge and a conveyor belt mechanism, the outlet of the feed hopper is connected to the highest point of the arched bridge, and the outlet of the arched bridge is connected to the conveyor belt mechanism;

The linkage temporary storage mechanism includes a push block 213, a slide block 203, an optical axis 202, a joint bearing 206, a connecting rod 207, a horizontal bearing seat 208, a pole 209, a swing shaft and a feeding slope 210, and the push block 213 Removably installed on the frame, the push block 213 cooperates with the slide block 203, the slide block is movably sleeved on the optical shaft, the compression spring is sleeved on the optical shaft, and the slide block A joint bearing is installed on the top, the joint bearing is connected with the lower end of the connecting rod, the upper end of the connecting rod is connected with the upper end of the strut through a horizontal bearing seat, the lower end of the strut is linked with the swing shaft, The feeding slope is fixedly installed on the shaft;

The automatic box cover mechanism includes a track 308, a top touch assembly and a roller 311. The fruit box 309 to be covered is movably located on the track 308, and the top touch assembly is arranged below the track 308, and the top touch assembly includes Top touch cylinder 315 and the top block 313 that is used for top touch fruit box cover 310, described top touch cylinder 315 is installed on the frame 314, and top block 313 is installed on the telescoping rod of described top touch cylinder 315; Described track 308 The roller 311 is arranged on the upper side, and the distance between the roller 311 and the track 308 is the height of the fruit box after the lid is covered; along the moving direction of the fruit box, the top touch assembly is located at the rear of the roller 11.

Further, the track 308 is fixedly installed on the frame, and the side of the track 308 is arranged with a shift fork 307 for pushing the fruit box to move, and the shift fork 307 is connected to the movable U-shaped plate 306, and the movable U-shaped plate 306 The plate 306 is installed on the cylinder block slider of the rodless cylinder 305, and the rodless cylinder 305 is installed on the mobile platform 304, and the mobile platform 304 is connected with the linear flange 303, and the linear flange 303 is connected with the guide optical axis 302, and the mobile platform 304 is connected with the piston rod of the lift cylinder 301.

The feed hopper includes a bottom plate 803 and two sides 807. A drive roller 805 is provided behind the feed hopper. The rotating shaft of the drive roller 805 is connected to the output shaft of the stepper motor 804. The drive roller 805 rolls up There is a feed cloth, the outer end of which is fixed to the top of the arched bridge;

The conveyor belt mechanism includes a conveyor belt 806 and a feeding slope 802, the conveyor belt 806 is connected to a transmission assembly for driving the conveyor belt to move, the outlet of the arched bridge is connected to the entrance of the conveyor belt 806, and the conveyor belt 806 The outlet of the outlet is connected to the inlet of the feeding slope 802, and the outlet of the feeding slope 802 is located above the plastic box station.

Further, in the sponge lifting feeding mechanism, the lifting assembly includes a ratchet mechanism and a synchronous pulley mechanism, and the ratchet mechanism includes a rocker 109, a ratchet 115, a driving pawl 114 and a stop pawl 116, the Roller 108 is arranged at the upper end of rocking bar 109, and the lower end of described rocking bar 109 is installed on the lower drive shaft 104, and described ratchet 115 is installed on the described lower drive shaft 104, and described rocking bar 109 installs active pawl 114, so The active pawl 117 cooperates with the ratchet 115, and the ratchet 115 also cooperates with the stop pawl 116. The lower part of the telescopic rod of the feeding cylinder 103 is provided with a push block, and the push block and the roller 108 Cooperate, the return spring 113 is installed on the rocking bar 109, and the stop pawl 116 and the return spring 113 are installed on the frame 120;

The synchronous pulley mechanism includes a synchronous pulley 102, a synchronous belt 118 and a slide block 116. The two ends of the lower drive shaft 104 are equipped with a synchronous pulley 102, and the two ends of the upper drive shaft are also equipped with a synchronous pulley. The upper and lower two synchronous pulleys set the synchronous belt 118, the synchronous belt 118 is fixedly connected with the slider 116, the slider 116 is fixedly connected with the lifting platform 106, and the slider 116 is slidably set on the guide optical axis 111 superior.

There are four guide optical axes 111, and the four guide optical axes form a square, and two sliders are fixedly connected to the timing belts on both sides respectively. Of course, other numbers can also be used, as long as the lifting plate can be guaranteed not to be skewed.

In the suction box mechanism: as shown in FIG. 4 , the cylinder 601 is connected to the profile frame through an aluminum plate, and the end of the piston rod of the cylinder 601 is rigidly connected to the metal fitting 603 with a suction cup through an aluminum connecting plate 602 . The upper material storage rack 607 is connected with the profile frame and fixed. Driven by the piston rod of the cylinder 601, the suction cup fittings 603 rise to just below a stack of plastic boxes 605, and the vacuum generator is controlled to cause the suction cup 603 to inhale and hold the plastic box 604 at the bottom. The piston return stroke of the cylinder 601 drives the suction cup fittings 603 to suck the plastic box 604 and descend to the track platform to complete the feeding of the plastic box 604.

In described sponge feeding mechanism: the piston end of T-type push plate 107 is connected with cylinder 103, and the top sponge of a pile of sponges that the piston of cylinder drives T-type push plate 107 pushes forward moves, and enters designated position. Lifting platform 106 is connected with 4 slide blocks 116, and slide block 116 can slide up and down in 4 guide optical axes 111 again, can realize the vertical lifting of lifting platform, and guarantee that lifting plate does not skew. The side baffles 105 have left and right sides, and are fixed on the profile frame 120 . In the ratchet mechanism: in the second half of the piston return of the cylinder 103, the lower part of the T-shaped push plate 107 pushes the roller 108 connected to the ratchet rocking bar 109 to drive the rocking bar 109 to rotate around the drive shaft 104. The driving pawl 114 connected to the rocker 109 moves the ratchet 115 to rotate a fixed angle, thereby transmitting the torque to the driving shaft 104 connected to the ratchet 115 . In the synchronous belt mechanism: the sliders 116 on the left and right sides are all fastened to the synchronous belt 118 by aluminum plates. The timing belt 118 is wound on the timing pulley 102 and meshed therewith. The upper and lower synchronous pulleys 102 are assembled on the shaft 104, and the shaft 104 is assembled in the bedroom bearing seat 119, and the bearing seat 119 is fastened on the profile frame 120. Through the synchronous belt mechanism, the power transmitted from the lower drive shaft 104 is transmitted to the synchronous belt, so that the synchronous pulley 102 rotates at a certain angle, and the synchronous belt 118 meshed with the pulley 102 rises for a certain distance, thereby driving the lifting platform 106 to lift , to achieve the lifting of the sponge. In the push stroke of cylinder 103, due to the effect of stop ratchet 117, the reverse rotation of ratchet has been prevented, and the height of elevating platform can be kept. Simultaneously, the rocking bar returns to the initial position under the action of the return spring 113 connected to the profile frame 120 . By controlling the push and return of the cylinder, the function of lifting a stack of sponges and separating and feeding the top sponges can be realized.

In the small fruit feeding conveying mechanism: as shown in FIG. 3 , the bottom plate 803 is fixedly connected with two side plates 807 to form a small fruit feeding hopper. There is a cylinder 805 connected to the stepping motor 804 at the rear top of the feed hopper, and the cylinder 805 and the motor 804 are all fixed on the profile frame. An arched bridge is connected to the front of the hopper, and a feeding cloth is rolled up on the drum 805, and the other side of the cloth is fixed to the top of the arched bridge. The front abutment of the arched bridge is connected with the conveyor belt mechanism. Conveyor belt mechanism is made up of PVC belt 806, roller 801, feeding ramp 802. The stepping motor 804 drives the drum 805 to rotate and roll the cloth to pack up, and the cloth is tensioned. The small fruit on it is lifted and slides down slowly along the slope formed by the fabric. After the fabric is tightened, the stepping motor continues to rotate to make the fabric vibrate, achieving the effect of vibrating and feeding the small fruit. After the small fruit slides, it passes through the arched bridge abutment, the PVC conveyor belt 806 is conveyed, the feeding slope 802, and then continuously enters the plastic box. Until the weighing sensor 70 detects that the weight of the small fruit in the box has reached the preset value, a signal is fed back to the single-chip microcomputer, and then the single-chip microcomputer controls the conveyor belt to stop feeding immediately.

In the interlocking temporary storage mechanism: as shown in FIG. 7 , it is an overall schematic diagram of the temporary storage interlocking mechanism, including a shift fork driving the interlocking temporary storage mechanism. As shown in Figure 8, it is a partially enlarged view of the linkage temporary storage mechanism, wherein the push block 213 is the power transmission core of the entire linkage temporary storage mechanism, and the fork moves the push block 213, thereby driving the entire linkage temporary storage mechanism to move together. As shown in the structural diagram of the linkage temporary storage mechanism in FIG. 9 , the push block 213 pushes the aluminum plate 204 , and the slider 203 , the vertical optical shaft seat 205 and the joint bearing 206 are fixed on the aluminum plate 204 . The slider 203 is sleeved on the optical axis 202 and can move linearly. The optical axis 202 is fixed by the vertical optical axis seat 201 . As the slider 203 moves to the right, the compression spring 212 is pressed tightly. The linear motion of the slider is realized above.

The optical axis 207 is connected with the joint bearing 206, and connected with the aluminum plate 209 through the horizontal optical axis seat 208 to form a crank. The aluminum plate 209 is connected to the inclined plane 210 through the horizontal bearing seat 211 and the optical axis. When the slider 203 moves linearly to the right through the pusher 213, it drives the optical axis 207 to rotate counterclockwise. According to the movement law of the crank slider, the aluminum plate 209 rotates clockwise, and at the same time drives the inclined surface 210 to rotate clockwise to realize the lifting of the inclined surface and complete the small fruit. temporary storage. After the temporary storage is over, the shift fork drives the push block 213 to descend, and breaks away from the entire linkage temporary storage mechanism. Since the slide block 203 presses the compression spring 212, the compression spring 212 recovers after losing the pressure of the pushing block, so as to realize the reset of the entire interlocking temporary storage mechanism.

The station switching device: the shift fork 307 is connected to the movable U-shaped plate 306, and the U-shaped plate 306 is located on the cylinder body slider of the rodless cylinder 305. The rodless cylinder 305 is placed on the mobile platform 304 connected by aluminum profiles through an aluminum plate. The mobile platform 304 is connected to the linear flange 303 through an aluminum plate, and the two linear flanges 303 are connected to the optical guide shaft 302 and can slide up and down in the optical guide shaft 302 . The mobile platform 304 is connected with the piston rod of the air cylinder 301 through an aluminum plate. The two guiding light shafts 302 are connected to the cylinder 301 through an aluminum plate.

Driven by the cylinder 301 and the rodless cylinder 305, the mobile platform 304 can move to the right in the horizontal direction, descend in the vertical direction, move to the left in the horizontal direction, and rise in the vertical direction to walk out of a rectangular motion track and complete a circular motion process.

The automatic box cover mechanism: the horizontal rightward movement stroke of the mobile platform 304 is the station switching stroke. In the process of moving, it can be divided into 3 stages. The first stage is as shown in Figure 11, the plastic box 309 has just begun to be moved by the shift fork, and the plastic box cover 310 is still in the state of turning down. The second stage is as shown in Figure 12, the plastic box 309 then moves, and the piston rod of the small-sized air cylinder 315 fixed on the connecting plate 314 is released simultaneously, and the plastic box cover 310 is jacked up. In the following moving process, the cylinder 315 piston rod returns, and the plastic box cover 310 rides on the cylinder 311 top. The plastic box 309 continues to be pushed, while the plastic box cover 310 is blocked by the roller and begins to overturn. When the plastic box cover 310 is completely overturned and positioned under the roller 311, the box cover 310 has been covered on the box body, and it is in the third stage as shown in FIG. 13 . In the last moving stroke, the buckle on the box body of the plastic box 309 and the buckle on the lid 310 are buckled under the pressing force of the cylinder 311, and pushed to the designated next station.

Under the program control of the single-chip embedded control system, all links are organically coordinated and rationally divided, and the following process is realized: first, the suction box mechanism works, and a plastic box is fed and placed on the first station of the slide rail. Then the sponge feeding mechanism completes the dynamic sponge feeding, and puts the sponge into the bottom of the plastic box and the opened lid. The shifting fork moving device moves one station, and the plastic box enters the second station, and the small fruit is fed into the box by the small fruit feeding conveying mechanism, and the small fruit is put into the box. After the small fruit reaches the specified weight, the fork continues to move, and the box enters the third buffer station, leaves the weighing module to prevent interference and is ready to cover the box. The shift fork continues to move, and during this movement, the cover box mechanism is used to automatically complete the cover box and enter the fourth station.

After going through all the above-mentioned processes once, the boxing and packaging of small fruits is automatically completed.

Due to the use of the flow-type multi-station setting, multiple stations can work together at the same time, which greatly improves the packaging efficiency and saves time.

Claims (5)

1. A small-sized fruit boxing machine, characterized in that: it comprises a frame, a suction box mechanism, a sponge feeding mechanism, a feeding conveying mechanism, a linkage temporary storage mechanism and an automatic lid box mechanism, wherein, The suction box mechanism includes a rising cylinder, a suction cup and a plastic box storage rack, the telescoping rod of the lifting cylinder is connected with a suction cup bracket, a suction cup is installed on the suction cup bracket, and the plastic box storage rack is located above the suction cup; The sponge feeding mechanism includes a feeding cylinder, a T-shaped push plate, a lifting platform, and a lifting assembly for driving the lifting platform to move up and down. The end of the telescopic rod of the feeding cylinder is connected to the T-shaped pushing plate. The T-shaped push plate is located above the lifting platform, the sponge to be fed is stacked up and down on the lifting platform, and side baffles are arranged on both sides of the lifting platform; The feed conveying mechanism includes a feed hopper, an arched bridge and a conveyor belt mechanism, the outlet of the feed hopper is connected to the highest point of the arched bridge, and the outlet of the arched bridge is connected to the conveyor belt mechanism; The linkage temporary storage mechanism includes a push block, a slide block, an optical shaft, a joint bearing, a connecting rod, a horizontal bearing seat, a pole, a swing shaft and a feeding inclined plane, and the push block is movably installed on the frame, The push block cooperates with the slider, the slider is movably set on the optical axis, the compression spring is set on the optical axis, the joint bearing is installed on the slider, and the joint bearing is connected to the connecting shaft. The lower end of the rod is connected, the upper end of the connecting rod is connected with the upper end of the strut through a horizontal bearing seat, the lower end of the strut is linked with the swing shaft, and a feeding slope is fixedly installed on the swing shaft; The automatic box cover mechanism includes a track, a top touch assembly and a roller. The fruit box to be covered is movably located on the track, and the top touch assembly is arranged below the track. The top touch assembly includes a top touch cylinder and a On the top block of the top-touch fruit box lid, the top-touch cylinder is installed on the frame, and the top block is installed on the telescopic rod of the top-touch cylinder; the roller is arranged above the track, and the roller and the moving guide rail The distance between them is the height of the fruit box after the lid is closed; along the moving direction of the fruit box, the top contact assembly is located behind the roller. 2. The small fruit box packing machine according to claim 1, characterized in that: the track is fixedly installed on the frame, and a shift fork is arranged on the side of the track for pushing the fruit box to move, and the shift fork is connected to Movable U-shaped plate, the movable U-shaped plate is installed on the cylinder block slider of the rodless cylinder, the rodless cylinder is installed on the mobile platform, the mobile platform is connected with the linear flange, and the linear method The blue is connected with the guiding light axis, and the moving platform is connected with the piston rod of the lifting cylinder. 3. The small-sized fruit boxing machine according to claim 1 or 2, characterized in that: the feed hopper includes a bottom plate and two side plates, the rear of the feed hopper is provided with a drive drum, and the drive drum The rotating shaft is connected with the output shaft of the stepping motor, and the feeding cloth is wound on the driving drum, and the outer end of the feeding cloth is fixed to the top of the arched bridge; The conveyor belt mechanism includes a conveyor belt and a feeding slope, the conveyor belt is connected to a transmission assembly for driving the conveyor belt, the outlet of the arched bridge is connected to the inlet of the conveyor belt, and the outlet of the conveyor belt is connected to the conveyor belt. The inlets of the feeding slopes are connected, and the outlets of the feeding slopes are located above the plastic box station. 4. The small fruit box packing machine according to claim 1, characterized in that: in the sponge lifting feeding mechanism, the lifting assembly includes a ratchet mechanism and a synchronous pulley mechanism, and the ratchet mechanism includes a rocker, a ratchet , the active pawl and the stop pawl, the upper end of the rocker is provided with a roller, the lower end of the rocker is installed on the lower driving shaft, the ratchet is installed on the lower driving shaft, the rocker is installed on the active The ratchet, the active ratchet cooperates with the ratchet, the ratchet also cooperates with the stop ratchet, the lower part of the telescopic rod of the feeding cylinder is provided with a push block, and the push block cooperates with the roller, A return spring is installed on the rocker, and the stop pawl and the return spring are installed on the frame; The synchronous pulley mechanism includes a synchronous pulley, a synchronous belt and a slider. The two ends of the lower drive shaft are equipped with a synchronous pulley, and the two ends of the upper drive shaft are also equipped with a synchronous pulley. The upper and lower two synchronous belts on the same side The wheel is fitted with a synchronous belt, and the synchronous belt is fixedly connected with the slider, and the slider is fixedly connected with the lifting platform, and the slider can be slid up and down and set on the guide light axis. 5. The sponge lifting and feeding mechanism of the small fruit cartoning machine according to claim 4, characterized in that: there are 4 guide optical axes, and the 4 guide optical axes form a square, and the two sliders are respectively connected to the The timing belts on both sides are fixedly connected.