Sheet material stack arranging device

Abstract

The present application relates to a kind of sheet material stacking and sorting machine, which is more stable in operation and can realize continuous stacking. The sheet material stacking and sorting machine includes a frame, a stacking bin and two feeding bins. After the cup lid is formed, it is placed on the feeding bin by a mechanical hand. When the cup lids on the feeding bin accumulate to a certain height, they are sent to the location of the stacking bin. Then the cup lids on the feeding bin are sent into the stacking bin. The two feeding bins feed alternately. When the stacking bin is stacked to a certain height, it is turned over, and the cup lid stack is sent to the packaging line in a flat manner for packaging. This sheet material stacking and sorting machine feeds the stacking bin alternately by two feeding bins. While ensuring stable feeding, it can also realize uninterrupted feeding and stacking. Moreover, the stacked material is discharged in a flat manner, which meets the feeding requirements of the subsequent packaging process.

Description

TECHNICAL FIELD

[0001] The present application relates to a sheet material packaging equipment, in particular to a sheet material stacking and sorting machine. BACKGROUND

[0002] With the rapid development of milk tea industry, the demand for disposable cups has increased dramatically. Disposable cups used to hold milk tea all have lids. These lids are sheet-shaped and made of plastic. After production, the lids need to be packaged. In order to achieve automatic packaging, the lids must first be stacked and sorted. The stacking and sorting work is done by a lid stacking device (also known as a stacking and sorting machine). There are similar lid stacking devices on the market, such as the invention patent "Lid Stacking and Conveying Mechanism" (publication number: CN217807467U), which discloses a machine that can stack and sort lids. The device first stacks the lids through a lid feeding device 2 into the stacking channel of a lid stacking rack 3, and then stacks them twice. When the stacking height reaches a certain level, the lids are pushed out to facilitate subsequent processing or packaging. According to the disclosure, the lid feeding device 2 and the lid feeding device 5 are both conveyor belts. However, there are three problems: 1. The stacked lids are easily turned over by the conveyor belt, unless the stacking is not high; 2. The conveyor belt needs to be aligned with the stacking channel of the lid stacking rack after conveying the lids. The position deviation caused by the conveyor belt may prevent the lids from being pushed into the stacking channel of the lid stacking rack; 3. The stacked lids are still upright when pushed out of the stacking channel of the lid stacking rack. It is not practical to use a conveyor belt to transport them. SUMMARY

[0003] In view of the deficiencies of the prior art, the present application provides a sheet material stacking and sorting machine that operates more stably and can achieve continuous stacking.

[0004] This sheet material stacking and sorting machine includes a frame, a stacking bin, and two feeding bins. The features are as follows:

[0005] The feeding bin includes a feeding bin plate and a feeding bin rod. The feeding bin rod surrounds several feeding bin slots on the feeding bin plate. The feeding bin plate has upper feeding holes that communicate with the feeding bin slots.

[0006] The stacking bin comprises a bin frame and a stacking bin rod, the bin frame is composed of an upper bin plate, a lower bin plate and side bin plates, a plurality of stacking bin rods are connected between the upper bin plate and the lower bin plate and surround a stacking bin groove, the lower bin plate is provided with a lower opening for allowing materials to enter the stacking bin groove, the upper bin plate is provided with an upper opening for allowing materials to exit the stacking bin groove, a material supporting mechanism is installed on the bin frame, the material supporting mechanism comprises a rotatable material supporting piece, the material supporting piece is located at the lower opening of the lower bin plate, and the material supporting piece has a first state for allowing materials to enter from the lower opening of the lower bin plate and a second state for supporting materials;

[0007] The machine frame is provided with an upper feeding station, a stacking station and a bin returning station along the feeding direction in sequence, the upper feeding station is provided with a front bin lifting mechanism, the front bin lifting mechanism comprises a front bin lifting plate and a front bin lifting plate power source for driving the front bin lifting plate to lift, the front bin lifting plate can lift the feeding bin, the bin returning station is provided with a rear bin lifting mechanism, the rear bin lifting mechanism comprises a rear bin lifting plate and a rear bin lifting plate power source for driving the rear bin lifting plate to lift, the rear bin lifting plate can lift the feeding bin, the stacking station is provided with a support and a rotating seat, the lower end of the rotating seat is rotatably installed on the support, the stacking bin is installed on the rotating seat, the rotating seat is in transmission connection with a turnover power source for driving the rotating seat to rotate, the lower portion of the stacking bin is provided with a material lifting mechanism, the material lifting mechanism comprises a material lifting piece and a material lifting power source for driving the material lifting piece to move up and down;

[0008] A pushing mechanism is installed on the rotating seat, the pushing mechanism comprises a pushing head, a pushing head seat, a pushing slide, a pushing power source and a pushing head power source, the rotating seat is provided with an outer guide rail, the pushing slide is slidingly arranged on the outer guide rail, the pushing slide is in transmission connection with the pushing power source for driving the pushing slide to move on the outer guide rail, the pushing head is installed on the pushing head seat, the pushing head seat and the pushing head power source are both installed on the pushing slide, and the pushing head seat is in transmission connection with the pushing head power source for driving the pushing head seat to move forward and backward;

[0009] Two conveying belts and two traction belts are installed on the machine frame, the two conveying belts are located between the two traction belts, the left and right lengths of the feeding bin are greater than the distance between the two conveying belts and less than the distance between the two traction belts, the two traction belts are both connected with traction seats, the traction seats can support the feeding bin, and the positions of the traction seats are higher than those of the conveying belts.

[0010] The material supporting mechanism comprises a cylinder and two rotatable material supporting shafts, the material supporting piece is connected with the material supporting shafts, one end of the material supporting shaft is connected with a gear, the piston rod of the cylinder is connected with a connecting strip, one end of the connecting strip is connected with a chain, the chain passes below the gear and is in meshing connection with the gear, the other end of the chain is connected with one end of a tension spring, and the other end of the tension spring is connected with the side bin plate.

[0011] The rotating seat is provided with an inner guide rail, and the stacking bin is slidingly arranged on the inner guide rail.

[0012] The bottom of the lower bin plate is provided with a positioning hole for inserting and positioning the feeding bin rod.

[0013] The machine frame is provided with a guide cylinder, and the stacking bin groove of the stacking bin corresponds to the guide cylinder when the stacking bin is overturned.

[0014] The machine frame is provided with a horizontal guide rail, and the traction seat is slidingly arranged on the horizontal guide rail through a sliding block.

[0015] According to the sheet material stacking and arranging machine provided by the present application, the two feeding bins alternately feed the stacking bin, which can ensure the stability of feeding and realize uninterrupted feeding and stacking, and the stacked materials are discharged in a flat manner, which meets the feeding requirements of the subsequent packaging process. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 The figure is a structural schematic diagram of the present application;

[0017] Figure 2 The figure is a structural schematic diagram of the machine frame part;

[0018] Figure 3 The figure is a structural schematic diagram of the feeding bin;

[0019] Figure 4 The figure is a structural schematic diagram of the stacking bin;

[0020] Figure 5 The figure is a structural schematic diagram of the material supporting mechanism;

[0021] Figure 6 The figure is a working principle diagram of the material supporting mechanism;

[0022] Figure 7 The figure is a structural schematic diagram of the material supporting sheet;

[0023] Figure 8 The figure is a side view of the feeding bin. DETAILED DESCRIPTION

[0024] As Figure 1As shown, the sheet material stacking and arranging machine comprises a frame 1, a stacking bin 3 and two feeding bins 2. After the cup lid is formed, it is placed on the feeding bin 2 by the mechanical hand. When the cup lids in the feeding bin 2 are stacked to a certain height, they are sent to the position of the stacking bin 3, and then the cup lids in the feeding bin 2 are sent into the stacking bin 3. The two feeding bins 2 feed in turns. When the stacking bin 3 is stacked to a certain height, the stacking bin 3 is overturned, and the cup lid stack is sent to the packaging machine in a flat manner for packaging.

[0025] The specific structure and working principle of the sheet material stacking and arranging machine will be described below.

[0026] As shown in the figure, Figure 3 The feeding bin 2 comprises a feeding bin plate 20 and a feeding bin rod 21. The feeding bin rod 21 surrounds a plurality of feeding bin grooves 22 on the feeding bin plate 20. The feeding bin plate 20 has a feeding hole 23 communicating with the feeding bin grooves 22. The cup lid is stacked in the feeding bin groove 22 by the mechanical hand. When it is stacked to a certain number, it is sent forward to the stacking bin 3 for feeding.

[0027] As shown in the figure, Figure 4 The stacking bin 3 comprises a bin frame and a stacking bin rod 33. The bin frame is composed of an upper bin plate 30, a lower bin plate 31 and a side bin plate 32. A plurality of stacking bin rods 33 are connected between the upper bin plate 30 and the lower bin plate 31 and surround a stacking bin groove 34. The lower bin plate 31 has a lower opening 310 for the material to enter the stacking bin groove 34. After the cup lid is sent by the feeding bin 2, the cup lid in the feeding bin 2 is sent into the stacking bin groove 34 through the lower opening 310. The upper bin plate 30 has an upper opening 300 for the material to exit the stacking bin groove 34. When the cup lid in the stacking bin groove 34 is stacked to a certain number, it is sent out through the upper opening 300. In addition, a material supporting mechanism 9 is installed on the bin frame. The material supporting mechanism 9 comprises a rotatable material supporting piece 96 (as shown in the figure). Figure 5 As shown in the figure, Figure 4 The material supporting piece 96 is located at the lower opening 310 of the lower bin plate 31 (as shown in the figure). The material supporting piece 96 has a first state for the material to enter the lower opening 310 of the lower bin plate 31 and a second state for supporting the material. The rotation of the material supporting piece 96 can allow the cup lid to enter the stacking bin groove 34 through the lower opening 310 of the lower bin plate 31, and can also support the cup lid stack in the stacking bin groove 34 from the bottom.

[0028] As shown in the figure, Figure 2As shown, the feeding rack 1 is provided with a feeding station A, a stacking station B and a return station C in sequence along the feeding direction. The feeding station A is provided with a front feeding mechanism 6, which comprises a front feeding plate 60 and a front feeding plate power source 61 for driving the front feeding plate 60 to lift. The front feeding plate 60 can lift the feeding bin 2. The return station C is provided with a rear feeding mechanism 8, which comprises a rear feeding plate 80 and a rear feeding plate power source 81 for driving the rear feeding plate 80 to lift. The rear feeding plate 80 can lift the feeding bin 2. The stacking station B is provided with a support 14 and a rotating seat 4. The lower end of the rotating seat 4 is rotatably installed on the support 14. The stacking bin 3 is installed on the rotating seat 4. The rotating seat 4 is in transmission connection with a turnover power source 40 for driving the rotating seat 4 to rotate. In addition, a feeding mechanism 7 is arranged below the stacking bin 3. The feeding mechanism 7 comprises a feeding member 70 and a feeding power source for driving the feeding member 70 to move up and down. When the feeding mechanism 7 works, the feeding power source can drive the feeding member 70 to pass through the feeding hole 23 of the feeding bin 2 to push the cup cover in the feeding bin 2 out.

[0029] As shown, Figure 4 The feeding mechanism 5 is installed on the rotating seat 4. The feeding mechanism 5 comprises a feeding head 50, a feeding head seat 51, a feeding slide 53, a feeding power source and a feeding head power source. The rotating seat 4 is provided with an outer guide rail 52. The feeding slide 53 is slidably arranged on the outer guide rail 52. The feeding slide 53 is in transmission connection with the feeding power source for driving the feeding slide 53 to move on the outer guide rail 52. The feeding head 50 is installed on the feeding head seat 51. The feeding head seat 51 and the feeding head power source are both installed on the feeding slide 53. The feeding head seat 51 is in transmission connection with the feeding head power source for driving the feeding head seat 51 to move forward and backward. The working process of the feeding mechanism 5 is as follows: the feeding head power source can push the feeding head 50 into the stacking bin groove 34. Then the feeding power source drives the feeding slide 53 to slide. In this way, the feeding head 50 can push the material in the stacking bin groove 34 out.

[0030] As shown, Figure 8 The feeding rack 1 is installed with two left and right conveying belts 10 (which are driven to move by independent power sources) and two left and right traction belts 11 (which are driven to move by independent power sources). The two conveying belts 10 are located between the two traction belts 11. The left and right lengths of the feeding bin 2 are greater than the interval of the two conveying belts 10 and less than the interval of the two traction belts 11. The two traction belts 11 are both connected with a traction seat 12, which can hold the feeding bin 2. The position of the traction seat 12 is higher than that of the conveying belt 10. It is just this structure that, Figure 8 As shown, when the feeding bin 2 on the traction seat 12 is put down, it can be placed on the two conveying belts 10. The two conveying belts 10 can send the feeding bin 2 back to the feeding station A and be below another feeding bin 2, waiting for storage.

[0031] The working principle of the sheet material stacking and arranging machine is as follows: as shown in Figure 2 the drawing, a feeding bin 2 is first in the feeding position A, at this time the front bin lifting mechanism 6 lifts the feeding bin 2, the robot sends the cup cover into the feeding bin 2 for stacking, when the feeding bin 2 is stacked to a certain number, the traction seat 12 comes to the feeding position A and is right below the feeding bin 2, the front bin lifting mechanism 6 lowers the feeding bin 2, so that the feeding bin 2 is on the traction seat 12, then the traction seat 12 moves forward with the feeding bin 2 to the stacking position B, the stacking position B lifting mechanism 7 lifts the cup cover in the feeding bin 2, at the same time the material supporting piece 96 at the opening 310 of the lower bin plate 31 is opened, so that the cup cover is lifted into the stacking bin slot 34 of the stacking bin 3, then the material supporting piece 96 rotates and supports the cup cover in the stacking bin slot 34, waiting for the next stacking, when the feeding bin 2 finishes feeding, the traction seat 12 continues to move forward with the feeding bin 2 to the bin returning position C, then the rear bin lifting mechanism 8 at the bin returning position C supports the feeding bin 2, while the traction seat 12 immediately moves back to the feeding position A for loading another feeding bin 2, and the feeding bin 2 at the bin returning position C gradually moves down under the action of the rear bin lifting mechanism 8, because the length of the feeding bin 2 is greater than the interval of the left and right conveying belts 10 and less than the interval of the left and right traction belts 11, so that the feeding bin 2 is on the left and right conveying belts 10, as shown in Figure 8 the drawing, the conveying belt 10 brings the empty feeding bin 2 back to the feeding position A and is below another feeding bin 2 being stacked, waiting for the next storage, when the other feeding bin 2 above is stacked with cup covers, the feeding bin 2 is fed to the stacking position B through the traction seat 12, and completes the same work as the previous feeding bin 2, through the rotation of the two feeding bins 2, uninterrupted feeding is realized, when the stacking in the stacking bin 3 is stacked to a certain number of cup covers (generally only two feeding bins 2 of materials are needed), the rotation source 40 drives the rotation of the rotating seat 4, the stacking bin 3 remains in a flat state, and finally the material pushing mechanism 5 pushes the material in the stacking bin 3 out, thereby completing the whole cup cover stacking and arranging work.

[0032] The material supporting piece 96 can realize two states through gravity self-rotation, but the speed is slow and the structure is unstable, the present application provides a specific embodiment with a more stable structure. Figure 5As shown, the material support mechanism 9 also includes a cylinder 90 and two rotatable material support shafts 95 on the left and right. Material support plates 96 are connected to the material support shafts 95 (each material support shaft 95 is connected to a material support plate 96). The material support plates 96 are located at the lower opening 310 of the material discharge hopper plate 31. One end of the material support shaft 95 is connected to a gear 93. The piston rod of the cylinder 90 is connected to a connecting bar 91. The connecting bar 91 is connected to one end of a chain 92. The chain 92 passes under the gear 93 and meshes with the gear 93. The other end of the chain 92 is connected to one end of a tension spring 94. The other end of the tension spring 94 is connected to the side hopper plate 32.

[0033] The working principle of the material support mechanism 9 is as follows: Figure 5 and Figure 6 As shown, when the cup lid is pushed, the photoelectric sensor detects the position of the cup lid and transmits a signal to the PLC. The PLC controls the cylinder 90 to drive the connecting bar 91 to move upward. The connecting bar 91 drives the inner end of the chain 92 to move upward. Since the chain 92 meshes with the gear 93, and the gear 93 is mounted on the material support shaft 95, the material support shaft 95 rotates counterclockwise. The material support plate 96 connected to the material support shaft 95 also rotates counterclockwise. Figure 6 As shown, the left and right support plates 96 open, allowing the cup lid G to enter the stacking bin 3 normally. Once the cup lid G is pushed into place, the cylinder 90 stops driving the connecting bar 91 upwards, and the other end of the chain 92 moves upwards under the tension of the spring 94. This causes the support shaft 95 to rotate clockwise, and the support plates 96 connected to the support shaft 95 also rotate clockwise, closing the left and right support plates 96 and supporting the upper cup lid G. This process can be repeated multiple times to stack the cup lids. Because the support plates 96 are opened by the cylinder 90 and reset by the spring 94, their movement is more stable and their rotation speed is faster.

[0034] To align the stacking bin 3 with the feeding bin 2 below, the present invention includes an inner guide rail 41 on the rotating base 4, and the stacking bin 3 is slidably mounted on the inner guide rail 41. The stacking bin 3 is connected to a power source that drives the stacking bin 3 to move on the inner guide rail 41. When the feeding bin 2 arrives, the power source drives the stacking bin 3 to move upward, so that the feeding bin 2 is directly below the stacking bin 3. Then, the power source drives the stacking bin 3 to move downward, so that the stacking bin 3 aligns vertically with the feeding bin 2 below, and the cup lid in the feeding bin 2 can be accurately pushed into the stacking bin 3.

[0035] To prevent horizontal movement after the stacked hopper 3 and the feeding hopper 2 are aligned, the bottom of the discharge hopper plate 31 of this invention has a positioning hole for inserting the feeding hopper rod 21. When the stacked hopper 3 moves down, the feeding hopper rod 21 of the feeding hopper 2 can be inserted into the positioning hole of the discharge hopper plate 31, which can prevent horizontal movement after the stacked hopper 3 and the feeding hopper 2 are aligned, ensuring stable feeding.

[0036] In order to connect the stacking bin 3 with the flow line of the packaging machine, the present application further installs a guide cylinder 15 on the frame 1, and the stacking bin groove 34 of the stacking bin 3 corresponds to the guide cylinder 15 when the stacking bin 3 is overturned. Thus the pushing mechanism 5 can send the cup cover stack in the stacking bin 3 to the guide cylinder 15, and the cup cover on the guide cylinder 15 is pushed forward by the pushing device on the flow line of the packaging machine.

[0037] Finally, it is worth mentioning that in order to move the traction seat 12 smoothly, the present application provides a horizontal guide rail 13 on the frame 1, and the traction seat 12 is slidably arranged on the horizontal guide rail 13 through a sliding block 16, as shown in the figure. Through the guidance of the horizontal guide rail 13, the traction seat 12 can smoothly realize horizontal movement. Figure 8 ​

Claims

1. A sheet material stacking and sorting machine, comprising a frame (1), a stacking bin (3), and two feeding bins (2), characterized in that: The feeding bin (2) includes a feeding bin plate (20) and a feeding bin rod (21). The feeding bin rod (21) forms a plurality of feeding bin slots (22) on the feeding bin plate (20). The feeding bin plate (20) has feeding holes (23) that communicate with the feeding bin slots (22). The stacking hopper (3) includes a hopper frame and stacking hopper rods (33). The hopper frame is composed of an upper hopper plate (30), a lower hopper plate (31), and a side hopper plate (32). Multiple stacking hopper rods (33) are connected between the upper hopper plate (30) and the lower hopper plate (31) and form a stacking hopper groove (34). The lower hopper plate (31) has a lower opening (310) for material to enter the stacking hopper groove (34). The upper hopper plate (30) and the side hopper plate (32) are connected between the upper hopper plate (30) and the lower hopper plate (31). 0) has an upper opening (300) for material to exit from the stacking bin trough (34), and a material support mechanism (9) is installed on the bin frame. The material support mechanism (9) includes a rotatable material support piece (96). The material support piece (96) is located at the lower opening (310) of the discharge bin plate (31). The material support piece (96) has a first state for allowing material to enter from the lower opening (310) of the discharge bin plate (31) and a second state for supporting the material. The frame (1) is provided with a feeding station (A), a stacking station (B), and a return station (C) in sequence along the feeding direction. The feeding station (A) is provided with a front top bin mechanism (6), which includes a front top bin plate (60) and a front top bin plate power source (61) for driving the front top bin plate (60) to rise and fall. The front top bin plate (60) can lift the feeding bin (2). The return station (C) is provided with a rear top bin mechanism (8), which includes a rear top bin plate (80) and a rear top bin plate power source (61) for driving the rear top bin plate (80) to rise and fall. The power source (81) and the rear top plate (80) can lift the feeding bin (2); the stacking station (B) is provided with a support (14) and a rotating seat (4), the lower end of the rotating seat (4) is rotatably mounted on the support (14), the stacking bin (3) is mounted on the rotating seat (4), and the rotating seat (4) is connected to the turning power source (40) that drives the rotating seat (4) to rotate; the stacking bin (3) is provided with a top material mechanism (7) below it, the top material mechanism (7) includes a top material component (70) and a top material power source that drives the top material component (70) to move up and down; The rotating seat (4) is equipped with a pushing mechanism (5). The pushing mechanism (5) includes a pushing head (50), a pushing head seat (51), a pushing slide (53), a pushing power source, and a pushing head power source. The rotating seat (4) is provided with an outer guide rail (52). The pushing slide (53) is slidably mounted on the outer guide rail (52). The pushing slide (53) is connected to the pushing power source that drives the pushing slide (53) to move on the outer guide rail (52). The pushing head (50) is mounted on the pushing head seat (51). The pushing head seat (51) and the pushing head power source are both mounted on the pushing slide (53). The pushing head seat (51) is connected to the pushing head power source that drives the pushing head seat (51) to move back and forth. The frame (1) is equipped with two left and right conveyor belts (10) and two left and right traction belts (11). The two conveyor belts (10) are located between the two traction belts (11). The left and right length of the feeding bin (2) is greater than the distance between the two left and right conveyor belts (10) but less than the distance between the two left and right traction belts (11). Each of the two traction belts (11) is connected to a traction seat (12). The traction seat (12) can support the feeding bin (2). The position of the traction seat (12) is higher than that of the conveyor belts (10).

2. The sheet material stacking and sorting machine according to claim 1, characterized in that: The material support mechanism (9) includes a cylinder (90) and two rotatable material support shafts (95) on the left and right. The material support plate (96) is connected to the material support shaft (95). One end of the material support shaft (95) is connected to a gear (93). The piston rod of the cylinder (90) is connected to a connecting bar (91). The connecting bar (91) is connected to one end of a chain (92). The chain (92) passes under the gear (93) and meshes with the gear (93). The other end of the chain (92) is connected to one end of a tension spring (94). The other end of the tension spring (94) is connected to the side hopper plate (32).

3. The sheet material stacking and sorting machine according to claim 1, characterized in that: The rotating seat (4) is provided with an inner guide rail (41), and the stacking bin (3) is slidably disposed on the inner guide rail (41). The stacking bin (3) is connected to the stacking bin power source that drives the stacking bin (3) to move on the inner guide rail (41).

4. The sheet material stacking and sorting machine according to claim 3, characterized in that: The bottom of the feeding bin plate (31) has a positioning hole for inserting and positioning the feeding bin rod (21).

5. A sheet material stacking and sorting machine according to claim 1, characterized in that: The frame (1) is equipped with a guide cylinder (15). When the stacking bin (3) is overturned, the stacking bin slot (34) of the stacking bin (3) corresponds to the guide cylinder (15).

6. The sheet material stacking and sorting machine according to claim 1, characterized in that: The frame (1) is provided with a horizontal guide rail (13), and the traction seat (12) is slidably mounted on the horizontal guide rail (13) via a slider (16).

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