Cap feeding device and sealing machine

Abstract

The utility model discloses a cap feeding device and a sealing machine, and relates to the technical field of cap feeding, the cap feeding device is provided with a plurality of stations, the plurality of stations comprise a feeding station and a target station, and the cap feeding device comprises a clip storage assembly and a transfer assembly. The clamping and storing assembly is arranged corresponding to the feeding station and provided with a storing bin with an opening in the upper end, and the storing bin is used for storing a plurality of caps. The transferring assembly comprises a picking part movably arranged between the feeding station and the target station, and the picking part is used for picking the caps in the storage bin and transferring the caps to the target station. According to the technical scheme, the caps can be continuously and stably fed, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cap feeding, in particular to a cap feeding device and a sealing machine. Background Art

[0002] In the prior art, the caps of cylindrical batteries are loaded by a vibrating plate, and a spatial transmission slide is used in conjunction with the loading direction. The caps fall freely to the required position according to the slope of the slide space due to their own gravity. During this process, the movement of the caps is uncontrollable, and material jamming is prone to occur, resulting in unstable transportation and reduced production efficiency. Utility Model Content

[0003] The main purpose of the utility model is to provide a cap feeding device and a sealing machine, aiming to enable the caps to be fed continuously and stably, thereby improving the production efficiency.

[0004] To achieve the above object, the utility model provides a cap feeding device having a plurality of workstations, wherein the plurality of workstations include a loading workstation and a target workstation. The cap feeding device includes:

[0005] A magazine storage assembly, corresponding to the loading station, the magazine storage assembly has a storage bin with an upper opening, the storage bin is used to store a plurality of caps; and

[0006] The transfer assembly includes a picking portion movably arranged between the loading station and the target station, and the picking portion is used to pick up the caps in the storage bin and transfer them to the target station.

[0007] In one embodiment, the plurality of workstations further comprises a material storage workstation;

[0008] At least two of the magazine storage assemblies are provided, and both of the two magazine storage assemblies are movable between the storage station and the loading station. At the storage station, the magazine storage assemblies are used to store a plurality of caps therein.

[0009] In one embodiment, the magazine storage assembly further comprises:

[0010] A lifting mechanism is arranged at the bottom of the storage bin and is used to lift upward a plurality of caps in the storage bin at the loading station.

[0011] In one embodiment, the magazine storage assembly further comprises:

[0012] An in-place detector is installed on the top of the storage bin to detect the position of the cap.

[0013] In one embodiment, the plurality of workstations further include a cutting workstation, and the cap feeding device further includes:

[0014] The switching table is movably arranged corresponding to the cutting station, and the two magazine material storage assemblies are both arranged above the switching table. Through the movement of the switching table, the two magazine material storage assemblies can move between the material storage station and the loading station.

[0015] In one embodiment, the pickup portion comprises:

[0016] an insulating seat, the insulating seat being movably disposed between the loading station and the target station; and

[0017] The magnetic attraction part and the insulating seat have a relative up-and-down movable stroke. During the up-and-down movable stroke, the lower end surface of the magnetic attraction part can be lower than the lower end surface of the insulating seat to attract the cap.

[0018] In one embodiment, the plurality of workstations include a positioning workstation located between the loading workstation and the target workstation;

[0019] Two picking parts are provided, one of which is movably provided between the loading station and the positioning station to pick up the caps in the storage bin and transfer them to the positioning station; the other picking part is movably provided between the positioning station and the target station to pick up the caps in the positioning station and transfer them to the target station.

[0020] In one embodiment, the cap feeding device further comprises:

[0021] The positioning part is arranged corresponding to the positioning station, and the upper part of the positioning part defines a positioning groove with an opening facing upward, and the positioning groove is used to accommodate the cap so that it is placed on the upper part of the positioning part.

[0022] In one embodiment, the cap feeding device further comprises:

[0023] an empty material detector, the empty material detector being mounted on the upper portion of the positioning portion to detect whether a cap is placed on the positioning portion; and / or,

[0024] a front and back material detector, the front and back material detector being mounted on the upper portion of the positioning portion to detect the front and back sides of the cap placed on the positioning portion; and / or,

[0025] A reject collection box is installed on a side of the positioning portion close to the magazine storage assembly to collect the caps that are placed opposite to the positioning portion.

[0026] A sealing machine comprises a battery core feeding device, a cap feeding device and a sealing device, wherein the cap feeding device adopts the above-mentioned cap feeding device.

[0027] The technical solution of the utility model stores a plurality of caps in a storage bin located at a loading station, picks up the caps placed at the upper opening of the storage bin by a picking portion, and transfers them from the loading station to a target station. During this process, the storage bin can stably provide caps each time, the picking portion fixes the caps to itself, and continuously transfers them from the loading station to the target station, thereby allowing the caps to run smoothly throughout the entire loading process and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0029] Figure 1 A structural schematic diagram of an embodiment of a cap feeding device provided by the utility model;

[0030] Figure 2 for Figure 1 A schematic diagram of the structure of the magazine storage assembly;

[0031] Figure 3 for Figure 2 Schematic diagram of the exploded structure of the back of the middle clip storage assembly;

[0032] Figure 4 for Figure 1 A three-dimensional cross-sectional view of the structure of the middle pickup portion;

[0033] Figure 5 for Figure 1 A schematic diagram of the structure of the transplanting assembly;

[0034] Figure 6 A structural schematic diagram of an embodiment of a cap feeding device provided by the utility model;

[0035] Figure 7 A structural schematic diagram of an embodiment of a sealing machine provided by the utility model;

[0036] Figure 8 for Figure 7 A top view of an embodiment of a middle sealing machine.

[0037] Description of Figure Numbers:

[0038] 100, cap feeding device; 101, loading station; 102, target station; 103, storage station; 104, positioning station; 1, clip storage assembly; 11, storage bin; 12, lifting mechanism; 13, in-place detector; 2, transfer assembly; 21, pick-up part; 211, insulating seat; 212, magnetic suction part; 213, magnetic suction channel; 3, switching table; 4, positioning part; 41, positioning slot; 51, empty material detector; 52, positive and negative material detector; 53, rejection collection box;

[0039] 200. Sealing machine; 210. Cell feeding device; 220. Sealing device.

[0040] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0042] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0043] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0044] like Figures 1 to 6 As shown, the utility model provides a cap feeding device 100, see Figure 1, having a plurality of stations, including a loading station 101 and a target station 102, the cap feeding device 100 comprises a clip storage component 1 and a transfer component 2. The clip storage component 1 corresponds to the loading station 101, and the clip storage component 1 has a storage bin 11 with an upper opening, and the storage bin 11 is used to store a plurality of caps. The transfer component 2 comprises a picking portion 21 movably arranged between the loading station 101 and the target station 102, and the picking portion 21 is used to pick up the caps in the storage bin 11 and transfer them to the target station 102.

[0045] The technical solution of the utility model stores a plurality of caps in a storage bin 11 located at a loading station 101, and picks up the caps placed at the upper opening of the storage bin 11 through a picking portion 21, and transfers them from the loading station 101 to a target station 102. During this process, the storage bin 11 can stably provide caps each time, and the picking portion 21 fixes the caps to itself and continuously transfers them from the loading station 101 to the target station 102, so that the caps can run smoothly in the entire loading process, thereby improving production efficiency.

[0046] Since the number of caps placed in the storage bin 11 is limited, when the caps in the storage bin 11 are picked up one by one by the picking part 21, the caps in the storage bin 11 will gradually decrease. In order to avoid the caps in the storage bin 11 being consumed, staff are required to intervene to fill the caps in the storage bin 11, causing the cap feeding device 100 to temporarily interrupt its operation and reduce production efficiency.

[0047] In one embodiment, referring to Figure 2 and Figure 3 , the multiple workstations also include a material storage station 103; at least two magazine storage assemblies 1 are provided, and both of the two magazine storage assemblies 1 can move between the material storage station 103 and the loading station 101. At the material storage station 103, the magazine storage assembly 1 is used to store multiple caps therein.

[0048] It can be understood that by setting up at least two magazine storage assemblies 1, each magazine storage device is loaded with multiple caps in the storage bin 11. When the caps in the storage bin 11 in one of the magazine storage assemblies 1 are exhausted, the other magazine storage device is switched to the loading station 101, so that the picking part 21 does not need to interrupt the operation to wait for the caps in the storage bin 11 to be filled, and at this time, the staff can fill the empty stock with new caps. This alternating process allows the caps to run continuously during the entire loading process, thereby improving production efficiency.

[0049] Specifically, when one magazine stocking assembly 1 is located at the loading station 101, another magazine stocking assembly 1 is located at the stocking station 103. When the caps in the magazine stocking assembly 1 at the loading station 101 are used up, the empty magazine stocking assembly 1 is cut out from the loading station 101, and at the same time, the other magazine stocking assembly 1 is switched from the stocking station 103 to the loading station 101.

[0050] Since the picking portion 21 will pick up the caps in the storage bin 11 in a certain sequence, in this embodiment, a plurality of caps are stacked and placed in the storage bin 11, and the picking portion 21 picks up the caps located at the top layer of the storage bin 11 in turn. During this process, the height of the caps located at the top layer continues to decrease, so that the picking portion 21 passes through the opening of the storage bin 11 and enters its internal space to pick up the caps. Therefore, not only does the picking portion 21 need to adjust the picking position each time, but also because the internal space of the storage bin 11 is adapted to the specifications of the caps, and the specifications of the caps are different, the picking portion 21 will interfere with the penetration into the storage bin 11, and the specifications of the picking portion 21 need to be adjusted accordingly, which requires staff intervention to disassemble and replace the transplanting components, reducing the scope of application of the device.

[0051] To this end, in one embodiment, the magazine storage assembly 1 further includes a lifting mechanism 12, which is disposed at the bottom of the storage bin 11 and is used to lift upward a plurality of caps in the storage bin 11 at the loading station 101.

[0052] It is understandable that the caps at the bottom of the storage bin 11 are lifted by the lifting mechanism 12, so that each time the picking part 21 picks up the caps at the top layer of the storage bin 11, a new cap will rise to the position picked up by the picking part 21. In this process, the caps in the storage bin 11 are automatically lifted to the loading station 101 through the precise control of the lifting mechanism 12. The height of the lifting can also be adjusted to ensure that the remaining caps are neatly arranged to correspond to caps of different specifications, so as to facilitate the subsequent grabbing of the picking part 21, improve the applicability of the magazine storage assembly 1, and thus realize the automatic loading process. And the picking part 21 only needs to pick up the caps from the top layer, so the operation steps of the picking part 21 can be simplified and the positioning operation of the picking part 21 can be reduced.

[0053] Specifically, in this embodiment, the lifting mechanism 12 includes a lifting plate and a lifting drive structure, the lifting drive structure includes a driving member and a transmission belt, the lifting plate is installed at the bottom of the storage bin 11, and a plurality of caps are sequentially stacked on the upper side of the lifting plate, the transmission belt is arranged up and down, and the transmission belt is driven to rotate by the output end of the driving member, and the portion of the lifting plate close to the transmission belt is fixedly connected to the transmission belt, so that the transmission belt can drive the lifting plate to rise or fall. The lifting drive structure can also include more structures that can realize the lifting drive function, and this embodiment does not specifically limit this.

[0054] In this way, the lifting plate can operate stably, effectively lift the cap to a predetermined position, and facilitate the picking operation of the picking part 21.

[0055] In one embodiment, the magazine storage assembly 1 further includes an in-place detector 13 , which is installed on the top of the storage bin 11 to detect the position of the cap.

[0056] It can be understood that the in-place detector 13 can accurately detect whether the cap has reached the predetermined position, ensure the correct placement and positioning of the cap in the storage bin 11, and ensure that the picking part 21 can accurately grab the cap. Secondly, when the number of caps is insufficient, a signal can be sent in time to notify the staff to refill.

[0057] In addition, the in-place detector 13 can also be connected to the external control system for communication, and the detection feedback signal of the cap can be sent to the control system. The control system can control the lifting action of the lifting mechanism 12 to avoid the cap from being over-lifted or not lifted into place, thereby further improving the accuracy of the magazine feeding assembly.

[0058] In one embodiment, the plurality of workstations also include a cutting station, and the cap feeding device 100 also includes a switching table 3, which is movably arranged corresponding to the cutting station, and the two magazine storage assemblies 1 are both arranged above the switching table 3. Through the movement of the switching table 3, the two magazine storage assemblies 1 can move between the storage station 103 and the loading station 101.

[0059] It can be understood that, by the horizontal movable setting of the switching table 3, the position of the cap located at the top layer of the storage bin 11 does not change when the two magazine storage devices are switched, thereby avoiding the adjustment time of the subsequent lifting mechanism 12 or the transplanting assembly, reducing the downtime, and benefiting the production efficiency.

[0060] Specifically, the lower side of the switching platform 3 can cooperate with the slide rail, and can be controlled to move horizontally by automatic or manual operation. In addition, it can be connected to the driving end of the linear drive device so that the storage bin 11 can switch between the loading station 101 and the storage station 103. In this embodiment, a slider is provided on the lower side of the switching platform 3, and the slider is slidably connected to the slide rail below to ensure the accuracy of horizontal movement, and a linear drive device is also provided below the switching platform 3, for example, the following method can be adopted:

[0061] 1. Linear motor drive device, which consists of rolling guide rails, position measurement system and linear motor. Linear motor is a driving component that directly converts electrical energy into linear motion mechanical energy without any intermediate conversion equipment. It has the characteristics of high output force, high operating accuracy, fast response and smooth feed.

[0062] 2. Screw pair transmission mechanism: linear motion is achieved through the mutual spiral motion of the thread pair.

[0063] 3. Rack and pinion transmission mechanism: linear motion is achieved through the meshing of gears and racks.

[0064] 4. Ball screw transmission mechanism: linear motion is achieved through the cooperation between the ball of the ball screw and the thread of the screw.

[0065] 5. Hydraulic transmission mechanism: linear motion is achieved through the flow of medium in the hydraulic system.

[0066] 6. Pneumatic transmission mechanism: linear motion is achieved through the flow of media in the hydraulic system.

[0067] More linear drive devices capable of achieving linear drive may also be included, and this embodiment does not make any specific limitation to this.

[0068] In this way, the control accuracy of the switching table 3 is improved by controlling the linear drive device.

[0069] In addition, the linear drive device can also be connected to an external control system for communication. The automated control system can automatically control the movement of the switching table 3 according to the needs of the production process, thereby improving production efficiency and reducing manual operations. It can also be used in combination with the in-place detector 13. For example, when the in-place detector 13 detects that there is no cap on the upper part of the storage bin 11, the linear drive device position can be controlled in time through the feedback signal of the in-place detector 13 to achieve uninterrupted connection and improve the continuity of the cap supply of the magazine storage assembly 1.

[0070] It should be noted that the cap can be made of a material that can be adsorbed by a magnet, and the magnet is used as the pick-up part 21 to absorb the cap, so that the cap can be picked up. The cap can also be made of a material that cannot be adsorbed by a magnet, and the pick-up part 21 can be clamped by a clamping part that can be opened and closed, or a vacuum suction cup can be used to negatively adsorb the cap to achieve cap picking.

[0071] In one embodiment, referring to Figure 4 The cap is made of a material that can be attracted by a magnet, and the pickup portion 21 includes an insulating seat 211 and a magnetic attraction portion 212. The insulating seat 211 is movably disposed between the loading station 101 and the target station 102. The magnetic attraction portion 212 and the insulating seat 211 have a relative up-and-down movable stroke, and during the up-and-down movable stroke, the lower end surface of the magnetic attraction portion 212 can be lower than the lower end surface of the insulating seat 211 to attract the cap.

[0072] It is understandable that the magnetic attraction part 212 can be a permanent magnet or an electromagnet (the electromagnet can respond instantly when the current is turned on or off, and quickly generate or disappear magnetic force, so there is no need to set up an additional insulating part for use, and the corresponding cap can be picked up and placed). The permanent magnet used in this embodiment can respond instantly and provide instant magnetic force on the one hand, and on the other hand, it does not require power supply to maintain the magnetic field, which is conducive to the structure of the pickup part 21 being simpler and easier to maintain. It can also include more magnetic attraction parts 212 that can achieve magnetic attraction, and this embodiment does not specifically limit this.

[0073] Specifically, in this embodiment, a magnetic attraction channel 213 is opened inside the insulating seat 211, and the magnetic attraction part 212 can move up and down in the magnetic attraction channel 213. When the lower end of the magnetic attraction part 212 extends out of the magnetic attraction channel 213, it can contact the cap located at the loading station 101, so that the cap is fixed to the magnetic attraction part 212 and moves to the target station 102 together. However, after the cap is located at the target station 102, when the lower end of the magnetic attraction part 212 retreats into the magnetic attraction channel 213, the cap can contact the insulating seat 211, so that the magnetic attraction part 212 is separated from the cap, and the cap is placed on the target station 102.

[0074] The up and down movement of the magnetic attraction part 212 can be achieved by a linear drive device (the specific types that can be selected can be referred to the above examples). In this embodiment, a cylinder drive device is specifically selected. The cylinder is installed on the upper part of the insulating seat 211, and its telescopic end extends into the magnetic attraction channel 213 and is connected to the upper part of the magnetic attraction part 212, driving the magnetic attraction part 212 to move up and down in the magnetic attraction channel 213.

[0075] In order to further improve the transportation efficiency of caps.

[0076] In one embodiment, referring to Figure 5 , the multiple stations include a positioning station 104 located between the loading station 101 and the target station 102; two picking parts 21 are set, one of which is movably set between the loading station 101 and the positioning station 104 to pick up the caps in the storage bin 11 and transfer them to the positioning station 104; the other picking part 21 is movably set between the positioning station 104 and the target station 102 to pick up the caps in the positioning station 104 and transfer them to the target station 102.

[0077] It is understandable that by setting two picking parts 21 to operate in parallel, the caps are transported from the loading station 101 to the target station 102 in relay, so that the operation efficiency is greatly improved. In an operation process, when one picking part 21 moves the caps from the loading station 101 to the positioning station 104, the other picking part 21 moves the caps located at the positioning station 104 to the target station 102, and the uninterrupted connection can be achieved by adjusting the operation speed and operation stroke of the two picking parts 21.

[0078] Specifically, in this embodiment, the transplanting assembly also includes a transplanting platform, two transplanting sliders, and an upper and lower driving assembly. The two transplanting sliders can move independently on the mobile platform. The two transplanting sliders correspond to two picking parts 21 respectively, and each picking part 21 is connected to the two transplanting sliders through the upper and lower driving assembly.

[0079] In this way, one picking part 21 can only move along the length direction of the transplanting platform from the loading station 101 to the positioning station 104, and the other picking part 21 can move along the length direction of the transplanting platform from the positioning station 104 to the target station 102, and the picking part 21 is moved up and down on the transplanting slider through the up and down driving components, so that the picking part 21 can adapt to working areas of different heights, thereby improving the flexibility of the transplanting components.

[0080] In one embodiment, referring to Figure 6 The cap feeding device 100 also includes a positioning portion 4, which is arranged corresponding to the positioning station 104. The upper portion of the positioning portion 4 defines a positioning groove 41 with an upward opening, and the positioning groove 41 is used to accommodate the cap so that it is placed on the upper portion of the positioning portion 4.

[0081] In this way, the cap picked up by the picking part 21 near the loading station 101 is placed on the positioning part 4, and then the picking part 21 near the target station 102 picks up the cap and moves it to the target station 102, so that the two picking parts 21 can be handed over without interfering with each other's work.

[0082] The positioning groove 41 can be arranged to be adapted according to the model and specification of the cap, so that the cap can be stably placed on the positioning portion 4 so as to be placed or taken out by the picking portion 21 .

[0083] Since the number of caps in the storage bin 11 is limited, when the caps in one storage bin 11 are used up, the picking portion 21 cannot continue to pick up the caps, resulting in no caps in the positioning groove 41, causing no-load operation and reducing production efficiency.

[0084] To this end, in one embodiment, the cap feeding device 100 further includes an empty material detector 51 , which is installed on the upper portion of the positioning portion 4 to detect whether a cap is placed on the positioning portion 4 .

[0085] In this way, it is possible to timely detect whether the positioning groove 41 is capped, so that an alarm can be issued in time for abnormal situations when the positioning groove 41 is not capped, and the staff can check and eliminate the fault.

[0086] When the cap is manually placed in the storage bin 11, the front and back sides of the cap may be placed incorrectly.

[0087] To this end, in one embodiment, the cap feeding device 100 further includes a front and back material detector 52 , which is installed on the upper portion of the positioning portion 4 to detect the front and back sides of the caps placed on the positioning portion 4 .

[0088] In this way, an alarm can be sounded in time for the wrong capping by manual installation, and the staff can check and eliminate the fault.

[0089] Since the cap is placed in reverse, only the cap needs to be removed so that the picking portion 21 can work again to pick up a new cap in the positioning groove 41. Therefore, reminding the worker to check through an alarm will cause the operation of the entire device to be interrupted, thereby reducing production efficiency.

[0090] To this end, in one embodiment, the cap feeding device 100 further includes a rejection collection box 53 , which is installed on a side of the positioning portion 4 close to the magazine storage assembly 1 to collect the caps that are placed opposite to the positioning portion 4 .

[0091] In this way, when the positive and negative material detector 52 detects that the cap in the positioning groove 41 is placed in reverse, the cap can be picked up again by the picking portion 21 and discarded in the rejection collection box 53, and the caps in the rejection collection box can be recycled and reused. In this process, no manual operation is required, thereby ensuring the continuity of cap feeding.

[0092] like Figure 7 and Figure 8 As shown, a sealing machine 200 includes a battery cell feeding device 210, a cap feeding device 100 and a sealing device 220, and the cap feeding device 100 adopts the above-mentioned cap feeding device 100.

[0093] The utility model also proposes a sealing machine 200, which includes a battery cell feeding device 210, a cap feeding device 100 and a sealing device 220. The specific structure of the cap feeding device 100 refers to the above embodiment. Since the sealing machine 200 adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here.

[0094] Specifically, the battery cells are transported to the target station 102 by the battery cell feeding device 210, and at the same time, the cap feeding device 100 provides the caps for transport to the target station 102. At the target station 102, the caps are placed above the battery cells and moved together to the sealing device 220. After being sealed by multiple sealing devices 220, the sealing work is completed.

[0095] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A cap feeding device, having a plurality of stations, wherein the plurality of stations include a loading station and a target station, characterized in that: The cap feeding device comprises: A magazine storage assembly, corresponding to the loading station, the magazine storage assembly has a storage bin with an upper opening, the storage bin is used to store a plurality of caps; and The transfer assembly includes a picking portion movably arranged between the loading station and the target station, and the picking portion is used to pick up the caps in the storage bin and transfer them to the target station.

2. The cap feeding device according to claim 1, characterized in that: The plurality of workstations also include a material storage workstation; At least two of the magazine storage assemblies are provided, and both of the two magazine storage assemblies are movable between the storage station and the loading station. At the storage station, the magazine storage assemblies are used to store a plurality of caps therein.

3. The cap feeding device according to claim 1 or 2, characterized in that: The magazine storage component also includes: A lifting mechanism is arranged at the bottom of the storage bin and is used to lift upward a plurality of caps in the storage bin at the loading station.

4. The cap feeding device according to claim 3, characterized in that: The magazine storage component also includes: An in-place detector is installed on the top of the storage bin and is used to detect the position of the cap.

5. The cap feeding device according to claim 2, characterized in that: The plurality of workstations also include a cutting workstation, and the cap feeding device also includes: The switching table is arranged to be movable corresponding to the cutting station, and the two magazine material storage assemblies are arranged above the switching table. Through the movement of the switching table, the two magazine material storage assemblies can move between the material storage station and the loading station.

6. The cap feeding device according to claim 1, characterized in that: The pickup portion comprises: an insulating seat, the insulating seat being movably disposed between the loading station and the target station; and The magnetic attraction part and the insulating seat have a relative up-and-down movable stroke. During the up-and-down movable stroke, the lower end surface of the magnetic attraction part can be lower than the lower end surface of the insulating seat to attract the cap.

7. The cap feeding device according to claim 1, characterized in that: The plurality of workstations include a positioning workstation located between the loading workstation and the target workstation; Two picking parts are provided, one of which is movably provided between the loading station and the positioning station to pick up the caps in the storage bin and transfer them to the positioning station; the other picking part is movably provided between the positioning station and the target station to pick up the caps in the positioning station and transfer them to the target station.

8. The cap feeding device according to claim 7, characterized in that: The cap feeding device also includes: The positioning part corresponds to the positioning part arranged at the positioning station, wherein the upper part of the positioning part defines a positioning groove with an opening facing upward, and the positioning groove is used to accommodate the cap so that it is placed on the upper part of the positioning part.

9. The cap feeding device according to claim 8, characterized in that: The cap feeding device also includes: an empty material detector, the empty material detector being mounted on the upper portion of the positioning portion to detect whether a cap is placed on the positioning portion; and / or, a front and back material detector, the front and back material detector being mounted on the upper portion of the positioning portion to detect the front and back sides of the cap placed on the positioning portion; and / or, A reject collection box is installed on a side of the positioning portion close to the magazine storage assembly to collect the caps that are placed opposite to the positioning portion.

10. A sealing machine, characterized in that: It comprises a battery cell feeding device, a cap feeding device and a sealing device, wherein the cap feeding device is the cap feeding device according to any one of claims 1 to 9.

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