Rotary in-mold cover closing equipment for positive pole shell of button cell

Abstract

The invention discloses rotary in-mold cover closing equipment for a positive pole shell of a button cell, which comprises a main shaft, a mounting disc, an upper guide rod mechanism, an upper cam, a lower guide rod mechanism and a lower cam, an upper guide rod and a lower guide rod which are matched by the cams move relatively, and a negative pole assembly and the positive pole shell which are continuously fed to the rotating mounting disc are subjected to in-mold cover closing. The positive pole shell and the negative pole assembly are accurately positioned without faults, continuous production can be achieved through a plurality of mounting stations on the mounting disc, matching of the feeding rhythm and the assembling rhythm is facilitated, the assembling speed and efficiency are improved, compared with a linear layout reciprocating type assembling machine, the productivity can be improved by about two times, and the equipment is stable in operation and low in noise.

Description

Technical Field

[0001] The invention relates to the field of battery production and manufacturing, in particular to button-type battery positive electrode shell capping equipment. Background Art

[0002] With the development of society and the continuous advancement of science and technology, the development speed of various electronic products has accelerated. Button batteries are widely used in all aspects of life, especially in computer motherboards, watches, calculators, Bluetooth headsets, toy walkie-talkies and other related products and fields. The demand is very large, so it is necessary to increase the production speed of the production line to increase corporate profits. To increase the production line speed, it is necessary to increase the production speed of each link. Among them, the assembly of the positive electrode shell is an important link in the entire production line. The existing positive electrode shell cover assembly is assembled by an assembly machine with a linear layout. Its assembly speed is slow and cannot meet production needs. Summary of the invention

[0003] Purpose of the invention: The purpose of the present invention is to provide a cover closing device for the positive electrode shell of a button-type battery, which improves the assembly speed and efficiency compared with an assembly machine with a linear layout.

[0004] Technical solution: A button-type battery positive electrode shell rotary in-mold cover closing device, including a main shaft, a mounting plate, an upper guide rod mechanism, an upper cam, a lower guide rod mechanism, and a lower cam;

[0005] The mounting plate is evenly distributed with a plurality of mounting stations along the circumference, the upper guide rod mechanism is above the mounting plate, the lower guide rod mechanism is below the mounting plate, the mounting plate, the upper rotating plate of the upper guide rod mechanism, and the lower rotating plate of the lower guide rod mechanism are all mounted on the main shaft and rotate synchronously therewith.

[0006] The camshafts are connected to the upper and lower guide rails of the invention and are adapted to move relative to each other so as to prevent the upper and lower guide rails from moving relative to each other and to prevent the lower and lower guide rails from moving relative to each other.

[0007] An upper feed layer, a mounting layer, and a lower feed layer are arranged on the mounting station from top to bottom in the thickness direction of the mounting disk. As the mounting disk rotates, the mounting disk feeds the negative electrode assembly to the lower feed layer and the positive electrode shell to the upper feed layer in the circumferential direction. Finally, the upper guide rod descends to send the positive electrode shell into the mounting layer and the lower guide rod ascends to send the negative electrode assembly into the mounting layer so that the positive electrode shell and the negative electrode assembly are covered.

[0008] Furthermore, all the installation stations are continuously divided into two areas, corresponding to the negative electrode assembly and the positive electrode shell feeding area, and the covering area, respectively; or, all the installation stations are continuously divided into three areas, corresponding to the negative electrode assembly feeding area, the positive electrode shell feeding area, and the covering area, respectively; the upper cam curve track and the lower cam curve track are symmetrical up and down, and at one of the installation stations in the covering area, the lowest point of the upper cam curve track and the highest point of the lower cam curve track correspond to each other, and when the upper guide rod and the lower guide rod rotate to the installation station with the installation disk, the two complete the upper guide rod descending to send the positive electrode shell into the installation layer and the lower guide rod ascending to send the negative electrode assembly into the installation layer so that the positive electrode shell and the negative electrode assembly are covered.

[0009] Furthermore, when all the installation stations are continuously divided into two areas, the lower feed layer of one of the installation stations in the feeding area is connected to the negative electrode assembly feeder, and the upper feed layer of the installation station is connected to the positive electrode shell feeder; when all the installation stations are continuously divided into three areas, the lower feed layer of at least one of the installation stations in the negative electrode assembly feeding area is connected to the negative electrode assembly feeder, and the upper feed layer of one of the installation stations in the positive electrode shell feeding area is connected to the positive electrode shell feeder.

[0010] Furthermore, the upper feed layer is composed of a positive electrode shell positioning plate and a positive electrode shell fence, and the positive electrode shell fence is outside the positive electrode shell positioning plate, and a positive electrode shell feed inlet is formed between the two and clamps the positive electrode shell;

[0011] The lower feed layer is composed of a carrier mounting plate and a carrier fence, the carrier fence is outside the carrier mounting plate, and a negative electrode assembly feed inlet is formed between the two and clamps the negative electrode assembly carrier carrying the negative electrode assembly; the negative electrode assembly carrier has a step hole, and the upper end of the lower guide rod is opposite to the step hole;

[0012] The installation layer is composed of a mold installation disk and a cover mold. The cover mold is outside the mold installation disk, and the cover mold is vertically opposite to the positive electrode shell positioning disk and the carrier installation disk.

[0013] Furthermore, the connection between the upper end of the upper guide rod and the upper cam curve track, and the connection between the lower end of the lower guide rod and the lower cam curve track are the same, both of which use the outer end of a fixed shaft to pass through the end of the upper guide rod or the lower guide rod and be fixed, and a roller is sleeved on the inner end of the fixed shaft, and the roller rotates by contact friction in the upper cam curve track or the lower cam curve track.

[0014] Furthermore, the upper guide rod descends to deliver the positive electrode shell into the installation layer, and the lower guide rod ascends to deliver the negative electrode assembly into the installation layer, and both adopt a magnetic attraction structure or a vacuum attraction structure provided at the lower end of the upper guide rod and the upper end of the lower guide rod to act on the positive electrode shell and the negative electrode assembly.

[0015] Beneficial effect: The advantages of the present invention are: the upper and lower guide rods coordinated with the cam move relative to each other, and the negative electrode assembly and the positive electrode shell that are continuously fed to the rotating mounting disk are covered in the mold. The positive electrode shell and the negative electrode assembly are positioned accurately and without faults. Multiple installation stations on the mounting disk can be produced continuously, which is conducive to matching the feeding rhythm and the assembly rhythm, and improving the assembly speed and efficiency. Compared with the reciprocating assembly machine with a linear layout, the production capacity can be increased by about 2 times, and the equipment runs stably and with low noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the installation station layout of the present invention;

[0017] Figure 2 It is a longitudinal cross-sectional structural diagram of the present invention at an installation station;

[0018] Figure 3 for Figure 2 A partial view of the center mounting plate area;

[0019] Figure 4 is a longitudinal cross-sectional structural diagram of a negative electrode assembly carrier;

[0020] Figure 5 It is a schematic diagram of the upper cam curve track on the outer peripheral surface of the upper cam;

[0021] Figure 6 For Figure 5 A schematic diagram of the development of the corresponding lower cam curve track on the outer peripheral surface of the lower cam;

[0022] Figure 7 Schematic diagram of the position of feeding the negative electrode assembly into the lower feeding layer and feeding the positive electrode shell into the upper feeding layer. DETAILED DESCRIPTION

[0023] The present invention will be further illustrated below in conjunction with specific embodiments.

[0024] A button battery positive electrode shell rotary in-mold cover closing device, as shown in the attached Figure 1 , 2 As shown, it includes a main shaft 1, a mounting plate 2, an upper guide rod mechanism 3, an upper cam 4, a lower guide rod mechanism 5, a lower cam 6 and a frame 7.

[0025] The main shaft 1 is arranged vertically and mounted on a frame 7. The main shaft 1 is driven to rotate by an external motor or other driving source.

[0026] The mounting plate 2 is mounted in the middle of the main shaft 1 and rotates synchronously with the main shaft 1. The mounting plate 2 has a plurality of mounting stations 21 evenly distributed along the circumference. Each mounting station 21 has the same structure. Figure 3 As shown, an upper feed layer 211, a mounting layer 212, and a lower feed layer 213 are arranged from top to bottom in the thickness direction of the mounting plate 2, and these three layers constitute an in-mold assembly mechanism.

[0027] The lower feed layer 213 is composed of a carrier mounting plate 2131 and a carrier fence 2132. The carrier mounting plate 2131 is fixed on the mounting plate 2. The carrier fence 2132 is also fixed on the mounting plate 2 outside the carrier mounting plate 2131. The plane space 2137 formed between the two constitutes the negative electrode assembly feed inlet. Due to the size and weight of the negative electrode assembly, it is inconvenient to move and operate. Therefore, a negative electrode assembly carrier 2133 for carrying the negative electrode assembly is provided. Figure 4 As shown, a step hole 2134 is opened in the middle of the negative electrode assembly carrier 2133, and the diameter of the upper through hole 2135 of the step hole 2134 is larger than the diameter of the lower through hole 2136. The negative electrode assembly is placed on the step surface of the step hole 2134 and is carried by the negative electrode assembly carrier 2133, and the negative electrode assembly feed inlet clamps the negative electrode assembly carrier carrying the negative electrode assembly.

[0028] The mounting layer 212 is composed of a mold mounting plate 2121 and a closing mold 2122. The mold mounting plate 2121 is fixed on the carrier mounting plate 2131. The closing mold 2122 is fixed on the carrier mounting plate 2131 and the carrier fence 2132 outside the mold mounting plate 2121. The closing mold 2122 is vertically opposite to the plane space 2137.

[0029] The upper feed layer 211 is composed of a positive electrode shell positioning plate 2111 and a positive electrode shell fence 2112. The positive electrode shell positioning plate 2111 is fixed on the mold mounting plate 2121, and the positive electrode shell fence 2112 is outside the positive electrode shell positioning plate 2111. The plane space 2113 formed between the two constitutes the positive electrode shell feed inlet and can clamp the positive electrode shell, and the plane space 2113 is vertically opposite to the closing mold 2122.

[0030] As attached Figure 7 As shown, the plane space 2113, the closing mold 2122 and the plane space 2137 form a vertical channel, the positive electrode shell feeder sends the positive electrode shell 8 from the top of the plane space 2113 into place, and the negative electrode component feeder sends the negative electrode component carrier 2133 carrying the negative electrode component 9 from the bottom of the plane space 2137 into place, the positive electrode shell sent into the plane space 2113 can move downward into the closing mold 2122, and the negative electrode component can move upward into the closing mold 2122 from the negative electrode component carrier 2131 sent into the plane space 2137.

[0031] The upper guide rod mechanism 3 is located above the mounting plate 2, and the upper cam 4 is located above the upper guide rod mechanism 3. The upper guide rod mechanism 3 includes an upper turntable 31 and a plurality of upper guide rods 32. The upper turntable 31 is mounted on the main shaft 1 and rotates synchronously therewith. Each upper guide rod 32 is penetrated through the upper turntable 31 and corresponds to each mounting station 21. The lower end of the upper guide rod 32 is vertically opposite to the plane space 2113. The upper cam 4 is mounted on the frame 7 and fixed without rotating. Figure 5 As shown, an upper cam curve track 41 is provided on the outer circumferential surface of the upper cam 4, and the upper end of the upper guide rod 32 is connected to the upper cam curve track 41. Specifically, a transverse fixed shaft 33 is provided on the upper end of the upper guide rod 32, and the outer end of the fixed shaft 33 is passed through the upper end of the upper guide rod 32 and fixed, and a roller 34 is sleeved on the inner end of the fixed shaft 33. The roller 34 is in the upper cam curve track 41. When the upper turntable 31 rotates synchronously with the main shaft 1, on the one hand, the roller 34 acts on the inner wall surface of the upper cam curve track 41 in a circumferential direction, and the roller 34 rotates in contact with the inner wall surface of the upper cam curve track 41 and is adapted to the upper cam 4. On the other hand, the curve change of the upper cam curve track 41 acts vertically on the upper guide rod 32 to drive it to produce up and down height fluctuations.

[0032] The lower guide rod mechanism 5 is located below the mounting plate 2, and the lower cam 6 is located below the lower guide rod mechanism 5. The lower guide rod mechanism 5 includes a lower turntable 51 and a plurality of lower guide rods 52. The lower turntable 51 is mounted on the main shaft 1 and rotates synchronously therewith. Each lower guide rod 52 is penetrated through the lower turntable 51 and corresponds to each mounting station 21. The upper end of the lower guide rod 52 is vertically opposite to the lower through hole 2136. The lower cam 6 is mounted on the frame 7 and fixed without rotating. Figure 6 As shown, a lower cam curve track 61 is provided on the outer circumferential surface of the lower cam 6, and the lower end of the lower guide rod 52 is connected to the lower cam curve track 61. The connection structure between the two is the same as the connection structure of the upper end of the upper guide rod 32 in the upper cam curve track 41. Specifically, a horizontal fixed shaft is provided at the lower end of the lower guide rod, the outer end of the fixed shaft is passed through the lower end of the lower guide rod and fixed, and a roller is sleeved on the inner end of the fixed shaft. The roller is in the lower cam curve track. When the lower turntable rotates synchronously with the main shaft, on the one hand, the roller acts on the inner wall surface of the lower cam curve track in a circumferential direction, and the roller rotates by contact and friction with the inner wall surface of the lower cam curve track to adapt to the lower cam. On the other hand, the curve change of the lower cam curve track acts vertically on the lower guide rod to drive it to produce up and down height fluctuations.

[0033] That is, at each installation station, the upper guide rod, the in-mold assembly mechanism, and the lower guide rod correspond to each other one by one, and rotate synchronously with the main shaft 1 to the next installation station.

[0034] The positive electrode shell closing of button-type battery involves three working steps: positive electrode shell feeding, negative electrode assembly feeding, and in-mold closing. Since the upper feeding layer and the lower feeding layer do not interfere with each other in the upper and lower positions on the installation station, the negative electrode assembly can be fed to the lower feeding layer and the positive electrode shell can be fed to the upper feeding layer at the same installation station at the same time, and finally the button battery can be closed in the installation layer. It is also possible to feed separately and finally close the cover at different installation stations, usually the negative electrode assembly is fed first and the positive electrode shell is fed last.

[0035] Combined with Figure 1 As shown, the installation station 21 can be divided into three areas, corresponding to the negative electrode assembly feeding area (i.e. Figure 1 The installation station indicated by the green circle in the middle), the positive electrode shell feeding area (i.e. Figure 1 The installation station indicated by the red circle), the cover closing area (i.e. Figure 1 The installation station indicated by the blue circle in the middle), one of the installation stations in the negative electrode assembly feeding area (referred to as the "negative electrode assembly feeding station") is connected to the external negative electrode assembly feeder, and one of the installation stations in the positive electrode shell feeding area (referred to as the "positive electrode shell feeding station") is connected to the external positive electrode shell feeder. The upper cam 4 and the lower cam 6 are installed symmetrically up and down, the upper cam curve track 41 and the lower cam curve track 61 are symmetrical up and down, and at least one of the installation stations in the cover area corresponds to the lowest point of the upper cam curve track 41 and the highest point of the lower cam curve track 61, that is, the attached Figure 1 , 5 , 6, then at this installation station (referred to as "assembly station"), the lowest travel point of the upper guide rod and the highest travel point of the lower guide rod correspond, and the assembly station in the cover closing area can be set to more than one, which is achieved by the design of the cam curve. It can be seen that a relatively large number of total installation stations can play a role in slowing down and stabilizing the production line. All installation stations are continuously divided into 3 areas, which is conducive to matching the feeding beat and the assembly beat.

[0036] As the mounting plate 2 rotates, the negative electrode assembly is fed from the negative electrode assembly feeding station in sequence to the planar space 2137 of the lower feeding layer 213 of each in-mold assembly mechanism through the negative electrode assembly carrier 2133, and the positive electrode shell is fed from the positive electrode shell feeding station in sequence to the planar space 2113 of the upper feeding layer 211 of each in-mold assembly mechanism. At the assembly station, the upper guide rod corresponding to each in-mold assembly mechanism descends to the closing mold 2122 for feeding the positive electrode shell into the mounting layer 212, and the corresponding lower guide rod rises to the closing mold 2122 for feeding the negative electrode assembly into the mounting layer 212. In the cover mold 2122, in the closing mold 2122, the positive electrode shell is on the negative electrode assembly, and the relative force of the upper guide rod and the lower guide rod makes the positive electrode shell and the negative electrode assembly close together to form a button battery. A magnetic attraction structure or a vacuum attraction structure is set at the lower end of the upper guide rod 32 and the upper end of the lower guide rod 52 to act on the positive electrode shell and the negative electrode assembly for transmission. The button battery after closing continues to rotate with the assembly station for subsequent unloading, and is discharged from the upper surface of the closing mold 2122 to remove the mounting disc, and then the negative electrode assembly carrier 2133 on the assembly station removes the mounting disc.

Claims

1. A rotary in-mold capping device for button-type battery positive electrode shell, characterized in that: It comprises a main shaft (1), a mounting plate (2), an upper guide rod mechanism (3), an upper cam (4), a lower guide rod mechanism (5), and a lower cam (6); The mounting plate (2) is uniformly provided with a plurality of mounting stations (21) along the circumferential direction; the upper guide rod mechanism (3) is located above the mounting plate (2); the lower guide rod mechanism (5) is located below the mounting plate (2); the mounting plate (2), the upper rotating plate (31) of the upper guide rod mechanism (3), and the lower rotating plate (51) of the lower guide rod mechanism (5) are all mounted on the main shaft (1) and rotate synchronously therewith; Each upper guide rod (32) on the upper guide rod mechanism (3) is inserted through the upper turntable (31) and corresponds to each installation station (21); the upper end of each upper guide rod (32) is connected to an upper cam curve track (41) on the circumference of the upper cam (4); each lower guide rod (52) on the lower guide rod mechanism (5) is inserted through the lower turntable (51) and corresponds to each installation station (21); the lower end of each lower guide rod (52) is connected to a lower cam curve track (61) on the circumference of the lower cam (6); the upper cam (4) and the lower cam (6) are fixed; as the main shaft (1) rotates, the upper end of the upper guide rod (32) drives the upper guide rod (32) to fluctuate in height under the action of the upper cam curve track (41); and the lower end of the lower guide rod (52) drives the lower guide rod (52) to fluctuate in height under the action of the lower cam curve track (61). The installation station (21) is provided with an upper feeding layer (211), a mounting layer (212), and a lower feeding layer (213) from top to bottom in the thickness direction of the installation disk (2). As the installation disk (2) rotates, the installation disk (2) completes the feeding of the negative electrode assembly to the lower feeding layer (213) and the feeding of the positive electrode shell to the upper feeding layer (211) in the circumferential direction. Finally, the upper guide rod (32) descends to send the positive electrode shell into the installation layer (212) and the lower guide rod (52) ascends to send the negative electrode assembly into the installation layer (212) so that the positive electrode shell and the negative electrode assembly are covered.

2. The button cell positive electrode shell rotary in-mold capping device according to claim 1, characterized in that: All the installation stations (21) are continuously divided into two areas, corresponding to the negative electrode assembly and the positive electrode shell feeding area, and the cover closing area, respectively; or, all the installation stations (21) are continuously divided into three areas, corresponding to the negative electrode assembly feeding area, the positive electrode shell feeding area, and the cover closing area, respectively; the upper cam curve track (41) and the lower cam curve track (61) are symmetrical in the upper and lower directions; at least one of the installation stations (21) in the cover closing area, the lowest point of the upper cam curve track (41) and the highest point of the lower cam curve track (61) correspond to each other; when the upper guide rod (32) and the lower guide rod (52) rotate to the installation station (21) along with the installation plate (2), the upper guide rod (32) and the lower guide rod (52) complete the upper guide rod (32) descending to send the positive electrode shell into the installation layer (212) and the lower guide rod (52) ascending to send the negative electrode assembly into the installation layer (212) so that the positive electrode shell and the negative electrode assembly are closed.

3. The button cell positive electrode shell rotary in-mold capping device according to claim 2, characterized in that: When all the installation stations (21) are continuously divided into two areas, the lower feed layer (213) of one of the installation stations (21) in the feeding area is connected to the negative electrode assembly feeder, and the upper feed layer (211) of the installation station (21) is connected to the positive electrode shell feeder; when all the installation stations (21) are continuously divided into three areas, the lower feed layer (213) of one of the installation stations (21) in the negative electrode assembly feeding area is connected to the negative electrode assembly feeder, and the upper feed layer (211) of one of the installation stations (21) in the positive electrode shell feeding area is connected to the positive electrode shell feeder.

4. The button cell positive electrode shell rotary in-mold cover closing device according to claim 1, characterized in that: The upper feed layer (211) is composed of a positive electrode shell positioning plate (2111) and a positive electrode shell fence (2112), wherein the positive electrode shell fence (2112) is located outside the positive electrode shell positioning plate (2111), and a positive electrode shell feed inlet is formed between the two and the positive electrode shell is clamped; The lower feed layer (213) is composed of a carrier mounting plate (2131) and a carrier fence (2132), wherein the carrier fence (2132) is located outside the carrier mounting plate (2131), and a negative electrode assembly feed inlet is formed therebetween and clamps the negative electrode assembly carrier (2133) carrying the negative electrode assembly; the negative electrode assembly carrier (2131) has a step hole (2134), and the upper end of the lower guide rod (52) is directly opposite to the step hole (2134); The mounting layer (212) is composed of a mold mounting plate (2121) and a cover mold (2122); the cover mold (2122) is outside the mold mounting plate (2121); and the cover mold (2122) is vertically opposite to the positive electrode shell positioning plate (2111) and the carrier mounting plate (2131).

5. The button cell positive electrode shell rotary in-mold cover closing device according to claim 1, characterized in that: The connection between the upper end of the upper guide rod (32) and the upper cam curve track (41) and the connection between the lower end of the lower guide rod (52) and the lower cam curve track (61) are the same, and the outer end of the fixed shaft (33) is passed through the end of the upper guide rod (32) or the lower guide rod (52) and fixed, and a roller (34) is sleeved on the inner end of the fixed shaft (32), and the roller (34) rotates by contact and friction in the upper cam curve track (41) or the lower cam curve track (61).

6. The button cell positive electrode shell rotary in-mold cover closing device according to claim 1, characterized in that: The upper guide rod (32) descends to deliver the positive electrode shell into the installation layer (212), and the lower guide rod (52) ascends to deliver the negative electrode assembly into the installation layer (212), both of which adopt a magnetic attraction structure or a vacuum attraction structure provided at the lower end of the upper guide rod (32) and the upper end of the lower guide rod (52) to act on the positive electrode shell and the negative electrode assembly.

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