Packaging assembly line applied to bottle caps

Abstract

The invention discloses a packaging assembly line applied to bottle caps. The packaging assembly line comprises a feeding device, a first feeding conveying line, a stacking device, a packaging device and a discharging conveying device. The feeding device is used for providing bottle caps; a plurality of transversely arranged first feeding stations are arranged on the first feeding conveying line at intervals; the stacking device is in butt joint between the feeding device and the first feeding conveying line and used for stacking the bottle caps into a transverse bottle cap stack on a first feeding station. The packaging device is in butt joint with the discharging end of the first feeding conveying line and used for conducting plastic packaging on the bottle cap stacks. The discharging conveying device is in butt joint with the discharging end of the packaging device and used for discharging and conveying the packaged bottle cap stacks. By means of the structure, the bottle caps can be stacked in the transverse state, conveying and packaging of the later-stage working procedure are facilitated, the packaging efficiency and the structural complexity are greatly improved, and the use requirement is met.

Description

Technical Field

[0001] The invention relates to the field of packaging equipment, and in particular to a packaging production line applied to bottle caps. Background Art

[0002] In some bottled products, the bottle caps need to be opened before use, such as canned yellow peaches and canned pickles. When packaging, the bottle caps are first stacked and then plastic-sealed. In the prior art, they are stacked in a vertical manner, but one side of the bottle caps is concave so that they can dock with the bottle body. It is precisely this concave that makes it easy to tip over when stacked vertically, and a support cylinder needs to be provided. This stacking structure has the following disadvantages:

[0003] 1. The vertical stacking state is very difficult to seal, and it is also difficult to achieve high-speed automated packaging;

[0004] 2. Vertical stacking requires the use of a material transfer component to grab the bottle caps one by one and then palletize them, or the use of a material feeding component to drop the bottle caps one by one into a support tube for palletizing, which also limits the efficiency of packaging;

[0005] Therefore, there is an urgent need for a packaging line applied to bottle caps to solve the above problems. Summary of the invention

[0006] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a packaging production line applied to bottle caps.

[0007] The technical solution adopted by an embodiment of the present invention to solve the technical problem is: a packaging production line applied to bottle caps, comprising a loading device, a first feeding conveyor line, a palletizing device, a packaging device and a discharging conveyor device;

[0008] The feeding device is used to provide bottle caps;

[0009] A plurality of horizontal first feeding stations are arranged at intervals on the first feeding conveyor line;

[0010] The stacking device is connected between the loading device and the first feeding conveyor line, and is used to stack the bottle caps on the first feeding station into a horizontal bottle cap stack;

[0011] The packaging device is connected to the discharge end of the first feeding conveyor line and is used to perform plastic sealing packaging on the bottle cap stacks;

[0012] The discharging conveying device is connected to the discharging end of the packaging device and is used for discharging and conveying the packaged bottle cap stacks.

[0013] As one of the preferred embodiments of the present invention, the feeding device includes a feeding hopper, a lifting line, a feeding slideway and a first material moving assembly;

[0014] The feed hopper is used to store bottle caps;

[0015] The feeding end of the lifting line is connected to the feeding hopper to lift the bottle caps to a high place;

[0016] The feeding slideway is connected to the discharge end of the lifting line to arrange the bottle caps into rows;

[0017] The first material transfer assembly is connected between the feeding slide and the palletizing device, and is used for transferring the bottle caps to the palletizing device row by row.

[0018] As one of the preferred embodiments of the present invention, the first material moving assembly includes a material moving box and a first driving assembly, and the material moving box has a side end opening and a lower end opening;

[0019] The end of the feeding slideway has an upper open end;

[0020] The side opening of the material transfer box is connected to the discharge port of the feeding slide, and the lower opening is connected to the upper opening of the feeding slide, so that the bottle caps in the feeding slide enter the material transfer box;

[0021] The first driving assembly is connected to the material transfer box and is used to drive the material transfer box to and fro between the feeding slide and the palletizing device.

[0022] As one of the preferred embodiments of the present invention, a packaging production line for bottle caps also includes a supporting slide connected between a feeding chute and a palletizing device, a material transfer box is located above the supporting slide, and a height of the supporting slide gradually decreases along the feeding chute toward the palletizing device.

[0023] As one of the preferred embodiments of the present invention, the palletizing device includes a belt conveyor line, a plurality of partition rods and a plurality of drop hoppers;

[0024] The feeding end of the belt conveyor line is connected to the loading device;

[0025] The partition rods are arranged at the discharge end of the belt conveyor line and are spaced apart along the width direction of the belt conveyor line to separate a number of stacking channels;

[0026] The first feeding conveyor line is located below the palletizing channel and has an angle α with the belt conveyor line;

[0027] The drop hopper is connected between the palletizing channel and the first feeding conveyor line;

[0028] The first feeding station can receive the bottle caps dropped from the hopper one by one when passing through the belt conveyor line, so that the bottle caps are stacked into a horizontal bottle cap pile on the first feeding station.

[0029] As one of the preferred embodiments of the present invention, a packaging production line for bottle caps further includes a material separation assembly disposed between a belt conveyor line and a drop hopper, for dropping the material on the belt conveyor line row by row into the drop hopper.

[0030] As one of the preferred embodiments of the present invention, the material separation assembly includes a second driving assembly, a connecting plate and a plurality of material blocking rods;

[0031] The output end of the second driving component is connected to the connecting plate;

[0032] The connecting plate extends along the width direction of the belt conveyor line;

[0033] The material blocking rod is installed on the connecting plate;

[0034] The second driving assembly can drive the connecting plate to reciprocate along the width direction of the belt conveyor line, so that the material blocking rod extends into the stacking channel or is withdrawn from the stacking channel.

[0035] As one of the preferred embodiments of the present invention, the packaging device includes a second feeding conveyor line, a film feeding assembly, a second material moving assembly and a heat sealing assembly;

[0036] A plurality of transverse second feeding stations are arranged at intervals on the second feeding conveyor line;

[0037] The film feeding assembly is used to provide the packaging film located above the second feeding station;

[0038] The second material transfer assembly is used to transfer the bottle cap stack on the first feeding station to the second feeding station and press it onto the packaging film;

[0039] The heat sealing component is used for heat sealing the packaging film so that the packaging film covers the bottle cap stack.

[0040] As one of the preferred embodiments of the present invention, the film feeding assembly includes a first film storage roller, a second film storage roller, a first film feeding roller and a second film feeding roller;

[0041] The first film storage roller and the first film delivery roller are located on one side of the heat sealing assembly and are used to provide a first film body;

[0042] The second film storage roller and the second film delivery roller are located on the other side of the heat sealing assembly and are used to provide a second film body;

[0043] The heat sealing assembly is used to heat seal the ends of the first film body and the second film body to form a packaging film.

[0044] As one of the preferred embodiments of the present invention, a packaging production line for bottle caps also includes a label dispensing device and a third material transfer assembly, wherein the label dispensing device is used to provide labels, and the third material transfer assembly is used to transfer the labels one by one to the packaging film.

[0045] The beneficial effects of the present invention are as follows: a packaging production line for bottle caps comprises a loading device, a first feeding conveyor line, a palletizing device, a packaging device and a discharging conveyor device; the loading device is used to provide bottle caps; a plurality of horizontally placed first feeding stations are arranged at intervals on the first feeding conveyor line; the palletizing device is connected between the loading device and the first feeding conveyor line, and is used to stack the bottle caps on the first feeding station into a horizontally placed bottle cap stack; the packaging device is connected to the discharging end of the first feeding conveyor line, and is used to perform plastic-sealing packaging on the bottle cap stack; the discharging conveyor device is connected to the discharging end of the packaging device, and is used to perform discharging and conveying on the packaged bottle cap stack; through the above structure, the bottle caps can be stacked in a horizontal state, which is convenient for conveying and packaging in the subsequent process, greatly improving the packaging efficiency and the complexity of the structure, and meeting the use requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0047] Figure 1 It is a first structural schematic diagram of a packaging line applied to bottle caps;

[0048] Figure 2 is a second structural schematic diagram of a packaging line applied to bottle caps;

[0049] Figure 3 It is a partial structural schematic diagram of a packaging production line applied to bottle caps;

[0050] Figure 4 for Figure 3 A partial enlarged view of the middle A area;

[0051] Figure 5 for Figure 3 A partial enlarged view of the middle B area;

[0052] Figure 6 It is a structural schematic diagram of the packaging device;

[0053] Figure 7 It is a cross-sectional view of part of the packaging device structure. DETAILED DESCRIPTION

[0054] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0055] In the description of the present invention, the meaning of "above", "below", "exceed", etc. is not inclusive of the number itself, and the meaning of "above", "below", "within", etc. is inclusive of the number itself. If there is a description of "first" or "second", it is only used to distinguish the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0056] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0057] In the present invention, unless otherwise clearly defined, the words "set", "install", "connect" and the like should be understood in a broad sense, for example, they can be directly connected or indirectly connected through an intermediate medium; they can be fixedly connected or detachably connected or integrally formed; they can be mechanically connected; they can be the internal connection of two elements or the interaction relationship between two elements. Those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0058] Reference Figures 1 to 7 , a packaging line for bottle caps, comprising a loading device 100, a first feeding conveyor line 200, a palletizing device 300 and a packaging device 400;

[0059] The feeding device 100 is used to provide bottle caps;

[0060] A plurality of horizontal first feeding stations are arranged at intervals on the first feeding conveyor line 200;

[0061] The palletizing device 300 is connected between the loading device 100 and the first feeding conveyor line 200, and is used to stack the bottle caps on the first feeding station into a horizontal bottle cap stack;

[0062] The packaging device 400 is connected to the discharge end of the first feeding conveyor line 200 and is used to perform plastic-sealing packaging on the bottle cap stacks.

[0063] 1)Reference Figure 1-Figure 3In some embodiments, the loading device 100 includes a feed hopper 110, a lifting line 120, a feeding chute 130 and a first material transfer assembly 140; the feed hopper 110 is used to store bottle caps; the feeding end of the lifting line 120 is connected to the feed hopper 110 to lift the bottle caps to a high place; the feeding chute 130 is connected to the discharge end of the lifting line 120 to arrange the bottle caps in rows; the first material transfer assembly 140 is connected between the feeding chute 130 and the palletizing device 300 to transfer the bottle caps to the palletizing device 300 row by row.

[0064] Specifically, the bottle caps are placed in the feed hopper 110, lifted to a higher position by the lifting line 120, and then enter the feeding chute 130 from the discharge end of the lifting line 120, wherein the feeding chute 130 includes a first straight end 131, an S-shaped segment 132 and a second straight segment 133 connected in sequence, the second straight segment 133 is connected to the palletizing device 300, and the bottle caps are arranged in a row in the second straight segment 133, and are transferred to the palletizing device 300 in the form of a whole row by the first material transfer assembly 140.

[0065] 2)Reference Figure 1-Figure 3 Furthermore, the first material moving assembly 140 includes a material moving box 141 and a first driving assembly 142. The material moving box 141 has a side opening and a lower opening; the end of the feeding chute 130 has an upper opening; the side opening of the material moving box 141 is connected to the discharge port of the feeding chute 130, and the lower opening is connected to the upper opening of the feeding chute 130, so that the bottle caps in the feeding chute 130 enter the material moving box 141; the first driving assembly 142 is connected to the material moving box 141, and is used to drive the material moving box 141 to move back and forth between the feeding chute 130 and the palletizing device 300.

[0066] Specifically, the upper opening at the end of the feeding slide 130 is composed of a second straight segment 133, that is, the material transfer box 141 is located above the second straight segment 133, and the bottle caps are arranged in a row in the space enclosed by the material transfer box 141 and the second straight segment 133, and are scraped and moved by the material transfer box 141 to the palletizing device 300, specifically, to the belt conveyor line 310, under the drive of the first driving component 142.

[0067] 3)Reference Figure 1-Figure 3 In some embodiments, a packaging assembly line for bottle caps further includes a supporting slide 500 docked between a feeding chute 130 and a palletizing device 300, a material transfer box 141 is located above the supporting slide 500, and a height of the supporting slide 500 gradually decreases along the feeding chute 130 toward the palletizing device 300.

[0068] Specifically, the supporting slide 500 is connected between the second straight segment 133 and the palletizing device 300 (belt conveyor line 310), and serves as a supporting bridge for the bottle caps when the material transfer box 141 scrapes the bottle caps from the second straight segment 133 to the palletizing device 300. Furthermore, the height of the supporting slide 500 is gradually reduced along the feeding slide 130 toward the palletizing device 300, so that after the material transfer box 141 scrapes the bottle caps into the palletizing device 300, there is a height difference between the bottle caps and the material transfer box 141, which will not hinder the resetting of the material transfer box 141.

[0069] 4)Reference Figure 1-Figure 5 In some embodiments, the palletizing device 300 includes a belt conveyor line 310, a plurality of dividing rods 320 and a plurality of drop hoppers 330; the feeding end of the belt conveyor line 310 is connected to the loading device 100; the dividing rods 320 are arranged at the discharging end of the belt conveyor line 310 and are arranged at intervals along the width direction of the belt conveyor line 310 to separate a plurality of palletizing channels 340; the first feeding conveyor line 200 is located below the palletizing channel 340 and has an angle α with the belt conveyor line 310; the drop hopper 330 is connected between the palletizing channel 340 and the first feeding conveyor line 200; the first feeding station can receive the bottle caps dropped in the drop hopper 330 one by one when passing through the belt conveyor line 310, so that the bottle caps are stacked into a horizontal bottle cap stack on the first feeding station.

[0070] Specifically, after the first material transfer assembly 140 transfers the bottle caps to the belt conveyor line 310, the belt conveyor line 310 drives the bottle caps to move forward until each row of bottle caps enters the corresponding stacking channel 340, and then falls into the corresponding drop hopper 330 one by one, and finally falls onto the first feeding conveyor line 200 below the drop hopper 330; specifically, while the bottle caps fall into the drop hopper 330, the first feeding conveyor line 200 also moves forward continuously. For example, when the first feeding conveyor line 200 drives the first first feeding station thereon to pass through the first drop hopper 330, due to the angle α between the first feeding conveyor line 200 and the belt conveyor line 310, The first bottle cap will be arranged at the first position of the first first feeding station; when the first feeding conveyor line 200 drives the first first feeding station thereon to pass through the second drop hopper 330, the second bottle cap will be arranged at the second position of the first first feeding station through the second drop hopper 330; when the first feeding conveyor line 200 drives the first first feeding station thereon to pass through the third drop hopper 330, the third bottle cap will be arranged at the third position of the first first feeding station... until the required number is stacked; it should be noted that baffles are provided at the front and rear ends of the drop hopper 330 to prevent the bottle caps from tipping forward or backward.

[0071] 5)Reference Figure 1-Figure 5In some embodiments, a packaging assembly line for bottle caps also includes a material separation assembly 600 arranged between the belt conveyor line 310 and the drop hopper 330, which is used to drop the rows on the belt conveyor line 310 into the drop hopper 330; as a preferred embodiment of the material separation assembly 600, the material separation assembly 600 includes a second drive assembly 610, a connecting plate 620 and a plurality of material blocking rods 630; the output end of the second drive assembly 610 is connected to the connecting plate 620; the connecting plate 620 extends along the width direction of the belt conveyor line 310; the material blocking rod 630 is installed on the connecting plate 620; the second drive assembly 610 can drive the connecting plate 620 to reciprocate along the width direction of the belt conveyor line 310, so that the material blocking rod 630 extends into the stacking channel 340 or is pulled out of the stacking channel 340.

[0072] Specifically, at the first moment, the second drive assembly 610 drives the connecting plate 620 to drive the blocking rod 630 to be withdrawn from the stacking channel 340, thereby removing the obstruction to the movement of the bottle caps in the stacking channel 340, so that the bottle caps can smoothly enter the drop hopper 330; at the second moment, the second drive assembly 610 drives the connecting plate 620 to drive the blocking rod 630 to enter the stacking channel 340, thereby blocking the movement of the bottle caps in the stacking channel 340, thereby preventing the bottle caps from falling into the drop hopper 330 and affecting the arrangement of the bottle caps on the first feeding station.

[0073] 6)Reference Figure 1-Figure 5 In some embodiments, the first feeding conveyor line 200 includes a first chain-type circulation component 210 and a plurality of first supporting rods 220 spaced apart on the first chain-type circulation component 210, and two adjacent first supporting rods 220 constitute a first feeding station.

[0074] 7)Reference Figure 1-Figure 2 and Figure 6-Figure 7 In some embodiments, the packaging device 400 includes a second feeding conveyor line 410, a film feeding assembly 420, a second material moving assembly 430 and a heat sealing assembly 440; a plurality of horizontally arranged second feeding stations are arranged at intervals on the second feeding conveyor line 410; the film feeding assembly 420 is used to provide a packaging film located above the second feeding station; the second material moving assembly 430 is used to transfer the stack of bottle caps on the first feeding station to the second feeding station and press them onto the packaging film; the heat sealing assembly 440 is used to heat seal the packaging film so that the packaging film covers the stack of bottle caps.

[0075] Specifically, the second feeding conveyor line 410 is parallel to the first feeding conveyor line 200 and adopts the same structure, that is, the second feeding conveyor line 410 includes a second chain circulation component and a plurality of second supporting rods arranged at intervals on the second chain circulation component, and two adjacent second supporting rods constitute a second feeding station; the working process of the packaging device 400 is as follows: the film feeding component 420 first conveys the packaging film to the top of the second feeding station, and the heat sealing component 440 performs the first heat sealing as the first side end seal of the packaging bag, and then the second material transfer component 430 transfers the stack of bottle caps stacked on the first feeding conveyor line 200 to the sealed packaging film, so that the packaging film is pressed against the second feeding station under the action of the gravity of the bottle cap stack, and then the heat sealing component 440 performs the second heat sealing as the second side end seal of the packaging bag, thereby completing the heat sealing of the bottle cap stack; it should be noted that the front and rear end openings of the bottle cap stack can be heat sealed by the second heat sealing component, or can be shrunk by an overheat shrinking furnace.

[0076] 9)Reference Figure 1-Figure 2 and Figure 6-Figure 7 In some embodiments, the film feeding assembly 420 includes a first film storage roller 421, a second film storage roller 422, a first film feeding roller 423 and a second film feeding roller 424; the first film storage roller 421 and the first film feeding roller 423 are located on one side of the heat sealing assembly 440, for providing a first film body; the second film storage roller 422 and the second film feeding roller 424 are located on the other side of the heat sealing assembly 440, for providing a second film body; the heat sealing assembly 440 is used to heat seal the first film body and the second film body at their ends to form a packaging film.

[0077] Specifically, at the first moment, the first film feed roller 423 and the second film feed roller 424 respectively feed the film bodies on the first film storage roller 421 and the second film storage roller 422 from the two sides of the second feeding station, and then the heat sealing assembly 440 performs the first heat sealing, and then the bottle cap stack is placed on the sealed packaging film. It should be noted that the second side end seal of the previous bottle cap stack serves as the first side end seal of the next bottle cap stack, and the cycle is repeated.

[0078] 10)Reference Figure 1-Figure 2 In some embodiments, a packaging line for bottle caps further includes a label dispensing device 700 and a third material transfer assembly 800. The label dispensing device 700 is used to provide labels, and the third material transfer assembly 800 is used to transfer the labels one by one to the packaging film. The packaging of the bottle cap stack also needs to be accompanied by a corresponding production label, on which the production date, production batch number, product purpose, etc. are marked.

[0079] Specifically, the label distribution device 700 provides labels one by one, and after the heat sealing component 440 seals the first side end of the packaging film, the third material transfer component 800 transfers the label to the packaging film with the first side end sealed, and then the second material transfer component 430 transfers the bottle cap stack to the packaging film and presses it against the label, and finally the second side end is sealed.

[0080] 11)Reference Figure 1-Figure 2 In some embodiments, the film feeding assembly 420, the second material moving assembly 430 and the heat sealing assembly 440 are provided as two groups and are arranged at intervals along the length direction of the second feeding conveyor line 410; by providing two groups of mechanisms to match the efficiency of the feeding process of the bottle cap stack with the efficiency of the packaging process of the bottle cap stack, it is beneficial to improve the packaging efficiency of the bottle cap stack.

[0081] 12)Reference Figure 1-Figure 2 In some embodiments, it also includes a discharging conveying device 900 connected to the discharging end of the packaging device 400, for discharging and conveying the packaged bottle cap stacks.

[0082] 13) The advantage of the present invention is that the bottle caps can be stacked in a horizontal position through the above structure, which is convenient for transportation and packaging in the subsequent process, greatly improving the packaging efficiency and the complexity of the structure, and meeting the use requirements.

[0083] Of course, the present invention is not limited to the above-mentioned embodiments, and those skilled in the art may make equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications and substitutions are all included in the scope defined by the claims of this application.

Claims

1. A packaging line for bottle caps, characterized by: It comprises a loading device (100), a first feeding conveyor line (200), a palletizing device (300), a packaging device (400) and a discharging conveyor device (900); The feeding device (100) is used to provide bottle caps; A plurality of first feeding stations are arranged at intervals on the first feeding conveyor line (200); The stacking device (300) is connected between the loading device (100) and the first feeding conveyor line (200) and is used to stack the bottle caps on the first feeding station into a horizontally placed bottle cap stack; The packaging device (400) is connected to the discharge end of the first feeding conveyor line (200) and is used to perform plastic sealing packaging on the bottle cap stack; The discharge conveying device (900) is connected to the discharge end of the packaging device (400) and is used for discharging and conveying the packaged bottle cap stack.

2. A packaging line for bottle caps according to claim 1, characterized in that: The loading device (100) comprises a feeding hopper (110), a lifting line (120), a feeding slideway (130) and a first material moving assembly (140); The feed hopper (110) is used to store bottle caps; The feeding end of the lifting line (120) is connected to the feeding hopper (110) to lift the bottle caps to a high place; The feeding slideway (130) is connected to the discharge end of the lifting line (120) and is used to arrange the bottle caps into rows; The first material transfer assembly (140) is connected between the feeding slideway (130) and the palletizing device (300) and is used to transfer the bottle caps to the palletizing device (300) row by row.

3. A packaging line for bottle caps according to claim 2, characterized in that: The first material moving assembly (140) comprises a material moving box (141) and a first driving assembly (142); the material moving box (141) has a side open end and a lower open end; The end of the feeding slideway (130) has an open upper end; The side opening of the material transfer box (141) is connected to the discharge port of the feeding slide (130), and the lower opening is connected to the upper opening of the feeding slide (130), so that the bottle caps in the feeding slide (130) can enter the material transfer box (141); The first driving component (142) is connected to the material transfer box (141) and is used to drive the material transfer box (141) to move back and forth between the feeding slideway (130) and the palletizing device (300).

4. A packaging line for bottle caps according to claim 3, characterized in that: It also includes a supporting slide plate (500) connected between the feeding slide (130) and the stacking device (300), the material transfer box (141) is located above the supporting slide plate (500), and the height of the supporting slide plate (500) gradually decreases along the feeding slide plate (130) toward the stacking device (300).

5. The packaging line for bottle caps according to claim 1, characterized in that: The palletizing device (300) comprises a belt conveyor line (310), a plurality of partition rods (320) and a plurality of drop hoppers (330); The feeding end of the belt conveyor line (310) is connected to the loading device (100); The partition bars (320) are arranged at the discharge end of the belt conveyor line (310) and are arranged at intervals along the width direction of the belt conveyor line (310) to separate a plurality of palletizing channels (340); The first feeding conveyor line (200) is located below the palletizing channel (340) and has an included angle α with the belt conveyor line (310); The drop hopper (330) is connected between the stacking channel (340) and the first feeding conveyor line (200); The first feeding station can receive the bottle caps dropped from the drop hopper (330) one by one when passing through the belt conveyor line (310), so that the bottle caps are stacked into a horizontally placed bottle cap pile on the first feeding station.

6. A packaging line for bottle caps according to claim 5, characterized in that: It also includes a material separation assembly (600) disposed between the belt conveyor line (310) and the drop hopper (330), and used for dropping the materials on the belt conveyor line (310) into the drop hopper (330) row by row.

7. A packaging line for bottle caps according to claim 6, characterized in that: The material blocking assembly (600) comprises a second driving assembly (610), a connecting plate (620) and a plurality of material blocking rods (630); The output end of the second driving component (610) is connected to the connecting plate (620); The connecting plate (620) extends along the width direction of the belt conveyor line (310); The material blocking rod (630) is installed on the connecting plate (620); The second driving assembly (610) can drive the connecting plate (620) to reciprocate along the width direction of the belt conveyor line (310) so that the material blocking rod (630) can extend into the stacking channel (340) or be withdrawn from the stacking channel (340).

8. The packaging line for bottle caps according to claim 1, characterized in that: The packaging device (400) comprises a second material feeding conveyor line (410), a film feeding assembly (420), a second material moving assembly (430) and a heat sealing assembly (440); A plurality of transversely placed second feeding stations are arranged at intervals on the second feeding conveyor line (410); The film feeding assembly (420) is used to provide a packaging film located above the second feeding station; The second material transfer assembly (430) is used to transfer the bottle cap stack on the first feeding station to the second feeding station and press it onto the packaging film; The heat sealing assembly (440) is used to heat seal the packaging film so that the packaging film covers the bottle cap stack.

9. A packaging line for bottle caps according to claim 8, characterized in that: The film delivery assembly (420) comprises a first film storage roller (421), a second film storage roller (422), a first film delivery roller (423) and a second film delivery roller (424); The first film storage roller (421) and the first film delivery roller (423) are located on one side of the heat sealing assembly (440) and are used to provide a first film body; The second film storage roller (422) and the second film delivery roller (424) are located on the other side of the heat sealing assembly (440) and are used to provide a second film body; The heat sealing assembly (440) is used to heat seal the first film body and the second film body at their ends to form the packaging film.

10. The packaging line for bottle caps according to claim 8, characterized in that: It also includes a label dispensing device (700) and a third material transfer component (800), wherein the label dispensing device (700) is used to provide labels, and the third material transfer component (800) is used to transfer the labels one by one to the packaging film.

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