A packaging line for bottle caps

Abstract

The application discloses a packaging flow line applied to bottle caps, which 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 horizontally arranged first feeding stations are arranged at intervals on the first feeding conveying line; the stacking device is connected between the feeding device and the first feeding conveying line and is used for stacking the bottle caps on the first feeding stations into horizontally arranged bottle cap stacks; the packaging device is connected to the discharging end of the first feeding conveying line and is used for plastic packaging the bottle cap stacks; and 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; through the above structure, the bottle caps can be stacked into a horizontally arranged state, which is convenient for conveying and packaging in the subsequent process, greatly improves the packaging efficiency and the complexity of the structure, and meets the use requirement.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of packaging equipment, in particular to a packaging assembly line applied to bottle caps. BACKGROUND

[0002] In some bottled products, the bottle cap needs to be opened before use, such as canned yellow peaches, canned pickled cucumbers, etc. The bottle caps are first stacked into a pile before being packaged. In the prior art, the bottle caps are stacked in a vertical position. However, due to the concave side of the bottle cap, the bottle cap is easy to fall over when stacked in a vertical position, and a supporting cylinder needs to be provided. This stacking structure has the following disadvantages:

[0003] 1. The vertical stacking state has great difficulty in plastic packaging, and it is also difficult to achieve high-speed automatic packaging;

[0004] 2. The vertical stacking needs to use a material moving assembly to grab the bottle caps one by one and then stack them, or use a material conveying assembly to drop the bottle caps one by one into the supporting cylinder for stacking, which also limits the packaging efficiency;

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

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

[0007] An embodiment of the present application adopts the technical solution to solve its technical problem: a packaging assembly line applied to bottle caps, comprising a feeding device, a first feeding conveying line, a stacking device, a packaging device, and a discharging conveying device;

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

[0009] A plurality of first feeding stations in a horizontal position are arranged at intervals on the first feeding conveying line;

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

[0011] The packaging device is connected to the discharge end of the first feeding conveying line, and is used to plastic package the bottle cap stack;

[0012] The discharging conveying device is connected to the discharge end of the packaging device, and is used to discharge and convey the packaged bottle cap stack.

[0013] As one of the preferred embodiments of the present application, the feeding device comprises a feeding hopper, a lifting line, a feeding chute, and a first material moving assembly;

[0014] A feeding hopper is used to store the bottle caps;

[0015] A feeding end of a lifting line is connected to the feeding hopper, for lifting the bottle caps to a high position;

[0016] A feeding slide is connected to a discharging end of the lifting line, for arranging the bottle caps in rows;

[0017] A first transferring assembly is connected between the feeding slide and the stacking device, for transferring the bottle caps row by row to the stacking device.

[0018] As one of the preferred embodiments of the present application, the first transferring assembly comprises a transferring box and a first driving assembly, and the transferring box has a side opening and a lower opening;

[0019] An end of the feeding slide has an upper opening;

[0020] The side opening of the transferring box is connected to the discharging end 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 transferring box;

[0021] The first driving assembly is connected to the transferring box, for driving the transferring box to reciprocate between the feeding slide and the stacking device.

[0022] As one of the preferred embodiments of the present application, a packaging assembly for bottle caps further comprises a supporting slide connected between the feeding slide and the stacking device, and the transferring box is located above the supporting slide, and the height of the supporting slide gradually decreases along the feeding slide towards the stacking device.

[0023] As one of the preferred embodiments of the present application, the stacking device comprises a belt conveying line, a plurality of partition rods and a plurality of dropping hoppers;

[0024] A feeding end of the belt conveying line is connected to the feeding device;

[0025] The partition rods are arranged at a discharging end of the belt conveying line and are spaced apart along the width direction of the belt conveying line, so as to form a plurality of stacking channels;

[0026] A first feeding conveying line is located below the stacking channels and has an included angle α with the belt conveying line;

[0027] The dropping hoppers are connected between the stacking channels and the first feeding conveying line;

[0028] The first feeding station can take the bottle caps dropped in the dropping hoppers one by one when passing through the belt conveying line, so as to stack the bottle caps into a horizontal bottle cap stack on the first feeding station.

[0029] As one of the preferred embodiments of the present application, the packaging line applied to the bottle caps further comprises a material separating assembly arranged between the belt conveying line and the material falling hopper, for dropping the rows of bottle caps on the belt conveying line into the material falling hopper.

[0030] As one of the preferred embodiments of the present application, the material separating assembly comprises a second driving assembly, a connecting plate and a plurality of material blocking rods.

[0031] The output end of the second driving assembly is connected with the connecting plate.

[0032] The connecting plate extends along the width direction of the belt conveying line.

[0033] The material blocking rods are arranged on the connecting plate.

[0034] The second driving assembly can drive the connecting plate to reciprocate along the width direction of the belt conveying line, so as to make the material blocking rods extend into the stacking channel or separate from the stacking channel.

[0035] As one of the preferred embodiments of the present application, the packaging device comprises a second material feeding conveying line, a film feeding assembly, a second material transferring assembly and a heat sealing assembly.

[0036] The second material feeding conveying line is provided with a plurality of horizontally arranged second material feeding stations at intervals.

[0037] The film feeding assembly is used to provide a packaging film above the second material feeding stations.

[0038] The second material transferring assembly is used to transfer the stack of bottle caps on the first material feeding stations to the second material feeding stations and press them on the packaging film.

[0039] The heat sealing assembly is used to heat seal the packaging film, so as to wrap the stack of bottle caps.

[0040] As one of the preferred embodiments of the present application, the film feeding assembly comprises 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 feeding roller are located on one side of the heat sealing assembly, for providing a first film body.

[0042] The second film storage roller and the second film feeding roller are located on the other side of the heat sealing assembly, for providing a second film body.

[0043] The heat sealing assembly is used to heat seal the first film body and the second film body, so as to form the packaging film.

[0044] As one of the preferred embodiments of the present application, the packaging line applied to the bottle caps further comprises a label dispensing device and a third material transferring assembly, the label dispensing device is used to provide labels, and the third material transferring assembly is used to transfer the labels one by one to the packaging film.

[0045] The beneficial effects of the present application: a packaging assembly line applied to bottle caps, comprising a feeding device, a first feeding conveying line, a stacking device, a packaging device and a discharging conveying device; the feeding device is used to provide bottle caps; a plurality of first feeding stations are arranged on the first feeding conveying line; the stacking device is connected between the feeding device and the first feeding conveying line, and is used to stack the bottle caps on the first feeding stations into horizontally placed bottle cap stacks; the packaging device is connected to the discharging end of the first feeding conveying line, and is used to plastic wrap the bottle cap stacks; the discharging conveying device is connected to the discharging end of the packaging device, and is used to discharge and convey the packaged bottle cap stacks; through the above structure, the bottle caps can be stacked in a horizontally placed state, which facilitates the conveying and packaging of the subsequent process, greatly improves the packaging efficiency and the complexity of the structure, and meets the use requirements. BRIEF DESCRIPTION OF DRAWINGS

[0046] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:

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

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

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

[0050] Figure 4 It is Figure 3 A local enlarged view of area A in FIG. 8;

[0051] Figure 5 It is Figure 3 A local enlarged view of area B in FIG. 8;

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

[0053] Figure 7 It is a sectional view of a partial structure of a packaging device. DETAILED DESCRIPTION

[0054] This part will describe the specific embodiments of the present application in detail, the preferred embodiments of the present application are shown in the accompanying drawings, the role of the drawings is to supplement the description of the text part with figures, so that people can intuitively and visually understand each technical feature and the overall technical scheme of the present application, but it cannot be understood as a limitation on the protection scope of the present application.

[0055] In the description of the present application, the meaning of multiple is two or more, greater than, less than, more than, etc. is understood as not including the number, above, below, within, etc. is understood as including the number. If it is described that the first, second is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the order of the indicated technical features.

[0056] In the description of the present application, it is understood that the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and is not intended to indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0057] In the present application, unless otherwise explicitly limited, the words "set", "install", "connect" and the like should be broadly understood, for example, they can be directly connected, or indirectly connected through an intermediate medium; can be fixedly connected, or can be detachably connected, or can be integrally formed; can be mechanically connected; can be the internal communication of two elements or the interaction relationship of two elements. The person skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical solution.

[0058] Reference Figures 1 to 7 A packaging line applied to bottle caps, comprising a feeding device 100, a first feeding conveying line 200, a stacking device 300 and a packaging device 400;

[0059] The feeding device 100 is used for providing bottle caps;

[0060] The first feeding conveying line 200 is provided with a plurality of horizontally arranged first feeding stations at intervals;

[0061] The stacking device 300 is connected between the feeding device 100 and the first feeding conveying line 200, and is used for stacking the bottle caps on the first feeding stations into horizontally arranged bottle cap stacks;

[0062] The packaging device 400 is connected to the discharge end of the first feeding conveying line 200, and is used for plastic packaging the bottle cap stacks.

[0063] 1) Reference Figure 1-Figure 3In some embodiments, the feeding device 100 comprises a feeding hopper 110, a lifting line 120, a feeding slide 130, and a first transferring assembly 140; the feeding hopper 110 is used for storing bottle caps; the feeding end of the lifting line 120 is connected to the feeding hopper 110, and is used for lifting the bottle caps to a high position; the feeding slide 130 is connected to the discharging end of the lifting line 120, and is used for arranging the bottle caps in a row; the first transferring assembly 140 is connected between the feeding slide 130 and the stacking device 300, and is used for transferring the bottle caps to the stacking device 300 row by row.

[0064] Specifically, the bottle caps are placed in the feeding hopper 110, are lifted to a high position by the lifting line 120, and then enter the feeding slide 130 from the discharging end of the lifting line 120, wherein the feeding slide 130 comprises a first linear end 131, an S-shaped section 132, and a second linear section 133 connected in sequence, the second linear section 133 is connected to the stacking device 300, and the bottle caps are arranged in a row in the second linear section 133 and are transferred to the stacking device 300 in the form of a whole row by the first transferring assembly 140.

[0065] 2) With reference to Figure 1-Figure 3 Further, the first transferring assembly 140 comprises a transferring box 141 and a first driving assembly 142, the transferring box 141 has a side opening and a lower opening; the end of the feeding slide 130 has an upper opening; the side opening of the transferring box 141 is connected to the discharging opening 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 enter the transferring box 141; the first driving assembly 142 is connected to the transferring box 141, and is used for driving the transferring box 141 to reciprocate between the feeding slide 130 and the stacking device 300.

[0066] Specifically, the upper opening of the end of the feeding slide 130 is formed by the second linear section 133, that is, the transferring box 141 is located above the second linear section 133, the bottle caps are arranged in a row in the space enclosed by the transferring box 141 and the second linear section 133, and are scraped by the transferring box 141 to the stacking device 300 under the driving of the first driving assembly 142, specifically, to the belt conveying line 310.

[0067] 3) With reference to Figure 1-Figure 3 In some embodiments, a packaging line applied to bottle caps further comprises a supporting slide plate 500 connected between the feeding slide 130 and the stacking device 300, the transferring 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 130 towards the stacking device 300.

[0068] Specifically, the supporting slide plate 500 is connected between the second straight section 133 and the stacking device 300 (the belt conveying line 310), and serves as a support bridge for the bottle caps during the process of moving the bottle caps from the second straight section 133 to the stacking device 300 by the moving box 141. Further, the height of the supporting slide plate 500 gradually decreases in the direction from the feeding slide 130 to the stacking device 300, so that after the bottle caps are moved into the stacking device 300 by the moving box 141, there is a height difference between the bottle caps and the moving box 141, which does not hinder the resetting of the moving box 141.

[0069] 4) Refer to Figure 1-Figure 5 In some embodiments, the stacking device 300 comprises a belt conveying line 310, a plurality of partition rods 320, and a plurality of material falling hoppers 330. The feeding end of the belt conveying line 310 is connected to the feeding device 100. The partition rods 320 are arranged at the discharging end of the belt conveying line 310 and are arranged along the width direction of the belt conveying line 310 to separate a plurality of stacking channels 340. The first feeding conveying line 200 is located below the stacking channels 340 and has an included angle a with the belt conveying line 310. The material falling hoppers 330 are connected between the stacking channels 340 and the first feeding conveying line 200. The first feeding stations can sequentially take the bottle caps falling in the material falling hoppers 330 when passing through the belt conveying line 310, so that the bottle caps are stacked into horizontally placed bottle cap stacks on the first feeding stations.

[0070] Specifically, after the bottle caps are transferred to the belt conveying line 310 by the first moving assembly 140, the bottle caps are moved forward by the belt conveying line 310 until the bottle caps in each row enter the corresponding stacking channels 340 and then sequentially fall into the corresponding material falling hoppers 330 and finally fall onto the first feeding conveying line 200 below the material falling hoppers 330. Specifically, the first feeding conveying line 200 also continuously moves forward while the bottle caps fall into the material falling hoppers 330. For example, when the first feeding conveying line 200 drives the first feeding station thereon to pass through the first material falling hopper 330, the first bottle cap will be arranged at the first position of the first feeding station due to the included angle a between the first feeding conveying line 200 and the belt conveying line 310. When the first feeding conveying line 200 drives the first feeding station thereon to pass through the second material falling hopper 330, the second bottle cap will be arranged at the second position of the first feeding station through the second material falling hopper 330. When the first feeding conveying line 200 drives the first feeding station thereon to pass through the third material falling hopper 330, the third bottle cap will be arranged at the third position of the first feeding station, and so on until the required number of bottle caps are stacked. It should be noted that the front end and the rear end of the material falling hopper 330 are provided with baffles to prevent the bottle caps from falling forward or backward.

[0071] 5) Refer to Figure 1-Figure 5In some embodiments, the packaging line applied to the bottle cap further comprises a material blocking assembly 600 arranged between the belt conveying line 310 and the material falling hopper 330, for dropping the bottle caps on the belt conveying line 310 into the material falling hopper 330 row by row; as a preferred embodiment of the material blocking assembly 600, 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 assembly 610 is connected with the connecting plate 620; the connecting plate 620 extends along the width direction of the belt conveying line 310; the material blocking rods 630 are arranged 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 conveying line 310, so as to make the material blocking rods 630 extend into the stacking channel 340 or separate from the stacking channel 340.

[0072] Specifically, at a first time, the second driving assembly 610 drives the connecting plate 620 to drive the material blocking rods 630 to separate from the stacking channel 340, so as to remove the blockage to the movement of the bottle caps in the stacking channel 340, so that the bottle caps can smoothly enter the material falling hopper 330; at a second time, the second driving assembly 610 drives the connecting plate 620 to drive the material blocking rods 630 to enter the stacking channel 340, so as to block the movement of the bottle caps in the stacking channel 340, to avoid the bottle caps falling into the material falling hopper 330 and affecting the arrangement of the bottle caps on the first feeding station.

[0073] 6) Refer to Figure 1-Figure 5 In some embodiments, the first feeding conveying line 200 comprises a first chain circulating assembly 210 and a plurality of first supporting rods 220 arranged at intervals on the first chain circulating assembly 210, and adjacent two first supporting rods 220 constitute a first feeding station.

[0074] 7) Refer to Figure 1-Figure 2 And Figure 6-Figure 7 In some embodiments, the packaging device 400 comprises a second feeding conveying line 410, a film feeding assembly 420, a second material transferring assembly 430 and a heat sealing assembly 440; a plurality of horizontal second feeding stations are arranged at intervals on the second feeding conveying line 410; the film feeding assembly 420 is used to provide a packaging film above the second feeding stations; the second material transferring assembly 430 is used to transfer the bottle cap stack on the first feeding station to the second feeding station and press it on the packaging film; the heat sealing assembly 440 is used to heat seal the packaging film, so as to wrap the bottle cap stack.

[0075] Specifically, the second feeding conveying line 410 is parallel to the first feeding conveying line 200 and has the same structure, that is, the second feeding conveying line 410 comprises a second chain circulating assembly and a plurality of second supporting rods which are arranged at intervals on the second chain circulating assembly, 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 assembly 420 first feeds the packaging film to the upper side of the second feeding station, and the first heat sealing assembly 440 performs the first heat sealing to form the first side end sealing of the packaging bag, and then the second material transferring assembly 430 transfers the stacked bottle caps on the first feeding conveying line 200 to the packaging film with the sealed end, so that the packaging film is pressed on the second feeding station under the gravity of the stacked bottle caps, and then the second heat sealing assembly 440 performs the second heat sealing to form the second side end sealing of the packaging bag, thereby completing the heat sealing of the stacked bottle caps; it should be noted that the front end and the rear end of the stacked bottle caps can be heat sealed by the second heat sealing assembly, or can be shrunk by a superheated shrink furnace.

[0076] 9) with reference to Figure 1-Figure 2 and Figure 6-Figure 7 In some embodiments, the film feeding assembly 420 comprises 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 and are used to provide 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 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 to form a packaging film.

[0077] Specifically, at the first time, the first film feeding roller 423 and the second film feeding roller 424 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 respectively, and then the first heat sealing assembly 440 performs the first heat sealing, and then the stacked bottle caps are placed on the packaging film with the sealed end; it should be noted that the second side end sealing of the previous stacked bottle caps serves as the first side end sealing of the subsequent stacked bottle caps, and the process is repeated.

[0078] 10) with reference to Figure 1-Figure 2 In some embodiments, the packaging line applied to the bottle caps further comprises a label dispensing device 700 and a third material transferring assembly 800, the label dispensing device 700 is used to provide labels, and the third material transferring assembly 800 is used to transfer the labels to the packaging film one by one; the packaging of the stacked bottle caps also needs to be accompanied by corresponding production labels, and the production labels mark the production date, the production batch number, the product purpose, etc.

[0079] Specifically, the labeling device 700 provides labels one by one, after the first side end of the packaging film is sealed by the heat sealing assembly 440, the labels are transferred to the packaging film after the first side end is sealed by the third material transferring assembly 800, the bottle cap stack is transferred to the packaging film and pressed on the labels by the second material transferring assembly 430, and finally the second side end is sealed.

[0080] 11)Refer to Figure 1-Figure 2 In some embodiments, the film feeding assembly 420, the second material transferring assembly 430 and the heat sealing assembly 440 are arranged in two groups and are arranged at intervals along the length direction of the second feeding conveying line 410; by arranging two groups of mechanisms to match the efficiency of the feeding process of the bottle cap stack and the efficiency of the packaging process of the bottle cap stack, the packaging efficiency of the bottle cap stack is improved.

[0081] 12)Refer to Figure 1-Figure 2 In some embodiments, the packaging device 400 further comprises a discharging conveying device 900 connected to the discharging end of the packaging device 400, which is used to discharge and convey the packaged bottle cap stack.

[0082] 13)The present application has the advantages that: through the above structure, the bottle cap stack can be stacked in a horizontal state, which is convenient for the conveying and packaging of the subsequent process, greatly improves the packaging efficiency and the complexity of the structure, and meets the use requirements.

[0083] Of course, the present application is not limited to the above-mentioned embodiments, and those skilled in the art can make equivalent modifications or replacements without departing from the spirit of the present application, and these equivalent modifications and replacements are all included in the scope defined by the claims of the present 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 horizontal first feeding stations are arranged at intervals on the first feeding conveyor line (200); 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 stack of bottle caps; 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; The discharge conveying device (900) is connected to the discharge end of the packaging device (400) and is used to discharge and convey the packaged bottle cap stacks; The loading device (100) comprises a feeding hopper (110), a lifting line (120), a feeding slide (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 docked with the feeding hopper (110) and is used to lift the bottle caps to a high position; 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; The first material moving assembly (140) comprises a material moving box (141) and a first driving assembly (142), wherein the material moving box (141) has a side end opening and a lower end opening; The end of the feeding slideway (130) has an open upper end; The side opening of the material transfer box (141) is docked with the discharge port of the feeding slide (130), and the lower opening is docked with 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 assembly (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); It also includes a supporting slide (500) connected between the feeding slide (130) and the palletizing device (300), the material transfer box (141) is located above the supporting slide (500), and the height of the supporting slide (500) gradually decreases along the feeding slide (130) toward the palletizing device (300).

2. 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 dividing rods (320) are provided 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 stacking 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 palletizing 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 horizontal bottle cap pile on the first feeding station.

3. The packaging line for bottle caps according to claim 2, characterized in that: It also includes a material separation assembly (600) disposed between the belt conveyor line (310) and the drop hopper (330), and is used to drop the bottle caps on the belt conveyor line (310) into the drop hopper (330) row by row.

4. The packaging line for bottle caps according to claim 3, characterized in that: The material spacer 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 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 mounted 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 blocking rod (630) extends into the stacking channel (340) or is withdrawn from the stacking channel (340).

5. The packaging line for bottle caps according to claim 1, characterized in that: The packaging device (400) comprises 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 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 component (440) is used to heat seal the packaging film so that the packaging film covers the bottle cap stack.

6. The packaging line for bottle caps according to claim 5, 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 component (440) is used to heat seal the first film body and the second film body at their ends to form the packaging film.

7. The packaging line for bottle caps according to claim 5, characterized in that: It also includes a label distributing device (700) and a third material transfer component (800), wherein the label distributing 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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