Paste can cover pressing device and using method

Abstract

The invention discloses a paste square can cover pressing device and a using method. The paste square can cover pressing device comprises a workbench (1), an electrically-driven rotating disc (2) is arranged above the workbench (1), a guide channel (3) is arranged above the rotating disc (2), an electrically-driven feeding wheel (4) is arranged on one side of an outlet of the guide channel (3), and a plurality of evenly-distributed feeding grooves (5) are formed in the peripheral face of the feeding wheel (4). A gland mechanism is arranged on the rear side of the guide channel (3); the cover pressing mechanism comprises an upper die (6), a die cavity (9) matched with a can (7) is formed in the bottom face of the upper die (6), a vacuumizing device (8) communicated with the die cavity (9) is arranged on the side wall of the upper die (6), a lifting mechanism connected with the workbench (1) is arranged at the top of the upper die (6), a pressing plate (10) is arranged at the bottom of the die cavity (9), and the lifting mechanism is connected with the pressing plate (10) through a rotating mechanism. The method has the advantages of high production efficiency and low production cost.

Description

TECHNICAL FIELD

[0001] The application belongs to the field of canning equipment, and particularly relates to a paste can lid pressing device and a use method. BACKGROUND

[0002] The existing paste can lid pressing device, such as a vacuum lid pressing machine for can sealing in application No. 202321082740.5, comprises a base, the base is provided with a rotating disc, the rotating disc is provided with two lower molds, the two lower molds alternately pass below the upper mold, the can is placed into the mold cavity of the lower mold, and the lid is placed on the screw port of the can and can be slightly rotated by a certain angle, which is to ensure the accurate position of the lid on the can, when the lower mold is below the upper mold, the can is tightly pressed by a cylinder to avoid slipping during the pressing process, the upper mold is lowered, vacuum is drawn, the lid is tightly screwed under the vacuum state, the pressing is completed, and then the upper mold is raised, so that the can with the pressed lid can be taken out.

[0003] In actual production, it is found that the existing lid pressing device still has some deficiencies, mainly as follows: Firstly, the depth of the mold cavity of the lower mold is matched with the height of the can, and has a large depth, when the worker puts the can into the mold cavity, the worker holds the upper end of the can, it is difficult to stably put the can into the mold cavity, in many cases, the worker releases the can after most of the can enters the mold cavity, and the can finally falls into the mold cavity, the can will have a large vibration, some paste filled in the can is very thin, and will overflow, so that the outer surface of the can needs to be cleaned, and the production cost is increased, in addition, the paste in the mold cavity needs to be cleaned in time after reaching a certain amount, and the production efficiency is reduced.

[0004] Secondly, due to the matching of the depth of the mold cavity of the lower mold and the height of the can, the worker is difficult to find a good force point when putting in or taking out the can, and the putting in and taking out has a lifting action, so that the speed of putting in and taking out the can is slow, and the production efficiency is further reduced, and even due to the difficulty in holding the can, the can may be dropped and damaged. SUMMARY

[0005] The application aims to provide a paste can lid pressing device and a use method.

[0006] The technical scheme of the application is as follows: a paste can lid pressing device, comprising a workbench, an electrically driven rotating disc is arranged above the workbench, a guide channel is arranged above the rotating disc, an electrically driven feeding wheel is arranged on one side of the outlet of the guide channel, a plurality of uniformly distributed feeding grooves are arranged on the outer periphery of the feeding wheel, and a lid pressing mechanism is arranged at the rear side of the guide channel. The capping mechanism comprises an upper die, the bottom surface of the upper die is provided with a die cavity matched with the can, the sidewall of the upper die is provided with a vacuum extraction device communicated with the die cavity, the top of the upper die is provided with a lifting mechanism connected with the workbench, the bottom of the die cavity is provided with a pressing plate, and the lifting mechanism is connected with the pressing plate through a rotating mechanism.

[0007] In the aforementioned paste can capping device, the upper portion of the rotating disc is provided with an inner arc-shaped guide rail and an outer arc-shaped guide rail, a guide channel is formed between the inner guide rail and the outer guide rail, and the inner guide rail and the outer guide rail are both fixed with the workbench through connecting rods.

[0008] In the aforementioned paste can capping device, the workbench is provided with a first motor with an output end fixed with the rotating disc and a second motor with an output end fixed with the feeding wheel, a plane bearing is arranged between the rotating disc and the workbench, the outer periphery of the feeding wheel is provided with an annular groove, and the outer guide rail passes through the annular groove.

[0009] In the aforementioned paste can capping device, the bottom surface of the upper die is provided with a sealing rubber ring.

[0010] In the aforementioned paste can capping device, the lifting mechanism comprises a support fixed with the workbench, the top of the support is provided with a first air cylinder, the telescopic end of the first air cylinder is provided with a box body, a plurality of bolts are arranged in the box body, the bolts pass through the bottom plate of the box body to connect the upper die, a helical first compression spring is sleeved on the bolts, and the first compression spring is located between the box body and the upper die.

[0011] In the aforementioned paste can capping device, the rotating mechanism comprises a through hole arranged at the top of the upper die, a rotor is arranged in the through hole, the upper end of the rotor extends into the box body and is connected with a gear, one side of the gear is provided with a rack in sliding connection with the box body, a second air cylinder with a telescopic end connected with the rack is arranged in the box body, a plug screw connected with the rotor is arranged on the pressing plate, and a guide column inserted into the rotor is arranged on the pressing plate.

[0012] In the aforementioned paste can capping device, the guide column has at least three, a helical second compression spring is sleeved on the guide column, and the second compression spring is located between the rotor and the pressing plate.

[0013] In the aforementioned paste can capping device, the bottom surface of the pressing plate is provided with an annular friction plate.

[0014] In the aforementioned paste can capping device, the rear side of the capping mechanism is provided with a guide strip, the rear end of the guide strip extends to the outside of the workbench, a storage table is arranged below the rear end of the guide strip, the table top of the storage table is close to the rotating disc and is level with the rotating disc. The rear side of the guide strip is provided with a wiping block in contact with the rotating disc, the wiping block is made of water-absorbing material, and the wiping block is fixed with the workbench.

[0015] The method for using the can head pressing device of the preceding paste formula can be described as follows: the cans with the heads preliminarily screwed are placed on the front side of the guide channel, the cans are sequentially guided to the feeding wheel along a predetermined track by the rotating disc, the plurality of cans are sequentially fed to the head pressing mechanism by the feeding wheel, and the head pressing mechanism is used to first vacuumize the cans and then tighten the heads.

[0016] Compared with the prior art, the lower die is cancelled in the application, the vacuumization and tightening of the heads on the cans can be completed by only using the upper die, the cans can be directly placed on the rotating disc, there is no obstacle around the worker when the worker takes and places the cans, the worker can hold the cans at the middle part of the cans, the force point is good, the cans are quickly and stably taken and placed, the production efficiency is improved, the paste formula in the cans is prevented from overflowing, the rotating disc and the outer surface of the cans are kept clean, the subsequent cleaning process of the cans is reduced, and the production cost is reduced. Therefore, the application has the advantages of high production efficiency and low production cost. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a top view schematic diagram of the application.

[0018] Figure 2 is Figure 1 is a schematic diagram at A-A.

[0019] Figure 3 is Figure 1 is a schematic diagram at B-B.

[0020] Figure 4 is Figure 1 is a schematic diagram at C-C.

[0021] Figure 5 is a connection schematic diagram of the gear and the rack.

[0022] Figure 6 is Figure 1 is a schematic diagram at D-D.

[0023] The marks in the drawings are as follows: 1-workbench, 2-rotating disc, 3-guide channel, 4-feeding wheel, 5-feeding groove, 6-upper die, 7-can, 8-vacuumizing device, 9-mould cavity, 10-pressing plate, 11-inner guide rail, 12-outer guide rail, 13-connecting rod, 14-first motor, 15-second motor, 16-annular groove, 17-sealing rubber ring, 18-bracket, 19-first air cylinder, 20-box body, 21-bolt, 22-first compression spring, 23-rotor, 24-gear, 25-rack, 26-second air cylinder, 27-screw plug, 28-second compression spring, 29-friction plate, 30-guiding strip, 31-feeding table, 32-wiping block, 33-flat bearing, 34-guiding hole, 35-piston, 36-third air cylinder, 37-guiding column. DETAILED DESCRIPTION

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0025] Example: A lid-sealing device for medicinal paste jars, such as... Figure 1 As shown, the device includes a workbench 1, with a turntable 2 above the workbench 1. The turntable 2 is made of stainless steel plate, which is sandblasted to improve friction. The workbench 1 is equipped with a first motor 14 whose output end is fixed to the turntable 2. A plane bearing 33 is provided between the turntable 2 and the workbench 1, and the load on the turntable 2 is supported by the workbench 1 through the plane bearing 33.

[0026] Above the turntable 2 are an arc-shaped inner guide rail 11 and an arc-shaped outer guide rail 12. The distance between the inner guide rail 11 and the outer guide rail 12 is matched with the diameter of the can, which should be 0.1-0.5 mm larger than the diameter of the can. The inner guide rail 11 and the outer guide rail 12 are at the same height and form a guide channel 3 between them. The front side of the guide channel 3 forms a feeding area. The feeding end of the inner guide rail 11 is bent radially inward, and the feeding end of the outer guide rail 12 is bent radially outward, so that the inlet of the guide channel 3 is open. Both the inner guide rail 11 and the outer guide rail 12 are fixed to the worktable 1 by connecting rods 13. The connecting rods 13 should avoid the travel range of the can. Both the inner guide rail 11 and the outer guide rail 12 are formed by bending stainless steel round wire.

[0027] A feeding wheel 4 is provided on the outer side of the outlet of the guide channel 3. Multiple evenly distributed feeding grooves 5 are provided on the outer circumference of the feeding wheel 4. The feeding grooves 5 are semi-circular and match the diameter of the can. A second motor 15 with its output end fixed to the feeding wheel 4 is provided on the worktable 1. An annular groove 16 is provided on the outer circumference of the feeding wheel 4, and the outer guide rail 12 passes through the annular groove 16. When the feeding wheel 4 pushes the can forward, it applies radial inward pressure to the can. The feeding wheel 4 and the inner guide rail 11 are not misaligned in the height direction to prevent the can from tilting and leaking.

[0028] A capping mechanism is provided on the rear side of the guide channel 3. The capping mechanism includes an upper mold 6, a sealing ring 17 on the bottom surface of the upper mold 6, and a mold cavity 9 on the bottom surface of the upper mold 6 that mates with the can 7. A guide bevel is preferably provided on the opening of the mold cavity 9. The mold cavity 9 is located inside the sealing ring 17. A vacuum pump is provided on the side wall of the upper mold 6, connecting to the mold cavity 9. The vacuum pump is used. A lifting mechanism connected to the worktable 1 is provided on the top of the upper mold 6. A pressure plate 10 is provided at the bottom of the mold cavity 9. The lifting mechanism is connected to the pressure plate 10 via a rotating mechanism. An annular friction plate 29 is provided on the bottom surface of the pressure plate 10. The friction plate 29 can be made of rubber. A guide hole 34 is provided on the outer side wall of the upper mold 6. A piston 35 is provided inside the guide hole 34. An elastic wear-resistant layer, such as a rubber block, is preferably provided on the front end face of the piston 35. A third cylinder 36 with a telescopic end fixed to the piston 35 is provided on the outer side of the upper mold 6.

[0029] The lifting mechanism comprises a support 18 fixed with the workbench 1, the top of the support 18 is provided with a first cylinder 19, the first cylinder 19 is a double-shaft cylinder, the telescopic end of the first cylinder 19 is provided with a box 20, a plurality of bolts 21 are arranged in the box 20, only the front end of the bolt 21 is provided with a thread, the rear part is a smooth shaft, the bolt 21 is in sliding connection with the box 20, the bolt 21 penetrates through the bottom plate of the box 20 and is connected with the upper die 6, a helical first compression spring 22 is sleeved on the bolt 21, and the first compression spring 22 is located between the box 20 and the upper die 6.

[0030] The rotating mechanism comprises a through hole arranged at the top of the upper die 6, a rotor 23 is arranged in the through hole, the upper end of the rotor 23 extends into the box 20 and is connected with a gear 24, the rotor 23 is in bearing connection with the box 20, a sealing ring can be arranged on the outer side wall of the rotor 23, so that the sealing property between the rotor 23 and the upper die 6 is improved. The gear 24 is provided with a rack 25 in sliding connection with the box 20 on one side, a second cylinder 26 connected with the rack 25 at the telescopic end is arranged in the box 20, a jam nut 27 connected with the rotor 23 is arranged on the pressing plate 10, the jam nut 27 is in sliding connection with the pressing plate 10, at least three guide columns 37 are arranged on the pressing plate 10 and penetrate into the rotor 23, the guide columns 37 are in sliding connection with the rotor 23 and are in clearance fit, the clearance fit is required for exhaust. A helical second compression spring 28 is sleeved on the guide column 37, and the second compression spring 28 is located between the rotor 23 and the pressing plate 10.

[0031] The rear side of the pressing cover mechanism is provided with a guide strip 30 located above the rotating disc 2, the guide strip 30 is fixed with the workbench 1, the rear end of the guide strip 30 extends to the outside of the workbench 1, a storage table 31 is arranged below the rear end of the guide strip 30, and the table top of the storage table 31 is close to the rotating disc 2 and is in the same height with the rotating disc 2. The rear side of the guide strip 30 is provided with a wiping block 32 in contact with the rotating disc 2, the wiping block 32 is made of water-absorbing material, such as sponge block, the wiping block 32 is fixed with the workbench 1 through a connecting piece, the wiping block 32 is wet, and needs to be replenished with water and replaced regularly, a slot can be arranged on the connecting piece, and the wiping block 32 is placed in the slot, so that the wiping block 32 is prevented from moving with the rotating disc 2. The wiping block 32 is used for keeping the rotating disc 2 clean, so that the vacuumizing effect is good.

[0032] Preferably, the first motor 14 and the second motor 15 are both step motors with drivers, and a guide strip can also be arranged on the outside of the guide strip 30, so that the cans pass between the guide strip 30 and the guide strip.

[0033] The use method is as follows: the cans 7 with the lids preliminarily screwed are placed at the front side of the guide channel 3, the first motor 14 drives the rotating disc 2 to rotate, the rotating disc 2 drives the cans 7 to enter the guide channel 3 and reach the feeding wheel 4, and under the action of the inner and outer guide rails, the plurality of cans 7 are arranged in a line in the guide channel 3. The feeding wheel 4 blocks the cans 7 at the front side from continuing to advance, and the rotating disc 2 continuously drives the subsequent cans 7 to advance, so that the plurality of cans 7 in the guide channel 3 are sequentially abutted.

[0034] Steps 1 to 10 are taken as a cycle, and the cycle is repeatedly executed. Step 1: the second motor 15 is started, the feeding wheel 4 is rotated by a certain angle, and the rotation angle is determined according to the number of the feeding grooves 5, for example, 30° when the number is 12.

[0035] Step 2: the rotation of the feeding wheel 4 makes one can pass through, and the next can enters the corresponding feeding groove 5, and the first motor 14 drives the rotating disc 2 to rotate by a certain angle, so that the passing can reaches the lower side of the upper die 6.

[0036] Step 3: the first air cylinder 19 is extended, so that the upper die 6 is lowered, the friction plate 29 first contacts the lid on the can, the first compression spring 22 is compressed, then the sealing rubber ring 17 contacts the rotating disc 2, and the second compression spring 28 is compressed.

[0037] Step 4: the vacuumizing device 8 is started, and the air in the mold cavity 9 is discharged.

[0038] Step 5: the third air cylinder 36 is extended, so that the piston 35 compresses the can.

[0039] Step 6: the second air cylinder 26 is extended, so that the rack 25 drives the gear 24 to rotate, the gear 24 drives the lid to rotate through the rotor 23, the guide column 37, the pressing plate 10 and the friction plate, and the lid is tightened.

[0040] Step 7: the third air cylinder 36 is retracted, and the piston 35 is separated from the can.

[0041] Step 8: the vacuumizing device 8 is closed, and the normal pressure is restored in the mold cavity 9.

[0042] Step 9: the first air cylinder 19 is retracted, and the upper die 6 is raised to restore the height.

[0043] Step 10: the second air cylinder 26 is retracted.

[0044] The cans with the tightened lids enter the temporary storage table 31 under the action of the guide strip 30, and the worker transfers the cans on the temporary storage table 31 to another process.

[0045] As preferred, a PLC controller, such as fx1n, can also be added, and the vacuum device, the first motor, and the second motor are connected to the PLC controller, and the first cylinder, the second cylinder, and the third cylinder are connected to the PLC controller through electromagnetic valves. The above steps 1 to 10 are automatically cycled.

[0046] In the description of the embodiments, it needs to be understood that the terms "upper", "lower", "front", "back", "left", "right", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting.

Claims

1. A lid-pressing device for medicinal paste jars, characterized in that: Includes a workbench (1), an electrically driven turntable (2) is provided above the workbench (1), a guide channel (3) is provided above the turntable (2), an electrically driven feeding wheel (4) is provided on one side of the outlet of the guide channel (3), a plurality of evenly distributed feeding grooves (5) are provided on the outer circumference of the feeding wheel (4), and a pressure cap mechanism is provided on the rear side of the guide channel (3). The capping mechanism includes an upper mold (6), a mold cavity (9) that cooperates with the can (7) is provided on the bottom surface of the upper mold (6), a vacuum device (8) that communicates with the mold cavity (9) is provided on the side wall of the upper mold (6), a lifting mechanism that connects to the worktable (1) is provided on the top of the upper mold (6), and a pressure plate (10) is provided at the bottom of the mold cavity (9). The lifting mechanism is connected to the pressure plate (10) through a rotating mechanism.

2. The canning capping device for medicinal pastes according to claim 1, characterized in that: The turntable (2) is provided with an arc-shaped inner guide rail (11) and an arc-shaped outer guide rail (12) above it. A guide channel (3) is formed between the inner guide rail (11) and the outer guide rail (12). The inner guide rail (11) and the outer guide rail (12) are both fixed to the worktable (1) by a connecting rod (13).

3. The canning capping device for medicinal pastes according to claim 2, characterized in that: The workbench (1) is equipped with a first motor (14) whose output end is fixed to the turntable (2) and a second motor (15) whose output end is fixed to the feeding wheel (4). A plane bearing (33) is provided between the turntable (2) and the workbench (1). An annular groove (16) is provided on the outer circumference of the feeding wheel (4), and the outer guide rail (12) passes through the annular groove (16).

4. The canning capping device for medicinal pastes according to claim 1, characterized in that: The upper mold (6) has a sealing ring (17) on its bottom surface, a guide hole (34) on its outer side wall, a piston (35) inside the guide hole (34), and a third cylinder (36) with a telescopic end fixed to the piston (35) on the outer side of the upper mold (6).

5. The canning capping device for medicinal pastes according to claim 1, characterized in that: The lifting mechanism includes a bracket (18) fixed to the workbench (1). A first cylinder (19) is provided on the top of the bracket (18). A box (20) is provided at the telescopic end of the first cylinder (19). Multiple bolts (21) are provided inside the box (20). The bolts (21) pass through the bottom plate of the box (20) and connect to the upper mold (6). A spiral first compression spring (22) is sleeved on the bolt (21). The first compression spring (22) is located between the box (20) and the upper mold (6).

6. The canning capping device for medicinal pastes according to claim 5, characterized in that: The rotating mechanism includes a through hole on the top of the upper mold (6), a rotor (23) is provided in the through hole, the upper end of the rotor (23) extends into the housing (20) and is connected to a gear (24), a rack (25) is provided on one side of the gear (24) and is slidably connected to the housing (20), a second cylinder (26) with the telescopic end connected to the rack (25) is provided in the housing (20), a plug screw (27) connected to the rotor (23) is provided on the pressure plate (10), and a guide post (37) inserted into the rotor (23) is provided on the pressure plate (10).

7. The canning capping device for medicinal pastes according to claim 6, characterized in that: There are at least three guide posts (37), and a spiral second compression spring (28) is sleeved on the guide post. The second compression spring (28) is located between the rotor (23) and the pressure plate (10).

8. The canning capping device for medicinal pastes according to claim 7, characterized in that: The bottom surface of the pressure plate (10) is provided with an annular friction plate (29).

9. The canning capping device for medicinal pastes according to claim 4, characterized in that: The capping mechanism is provided with a guide bar (30) at the rear side. The rear end of the guide bar (30) extends to the outside of the workbench (1). A storage platform (31) is provided below the rear end of the guide bar (30). The surface of the storage platform (31) is close to the turntable (2) and is at the same height as the turntable (2). The guide bar (30) has a wiping block (32) on its rear side that contacts the turntable (2). The wiping block (32) is made of water-absorbing material and is fixed to the workbench (1).

10. The method of using the canning capping device for medicinal pastes according to any one of claims 1 to 9, characterized in that: Place the cans (7) with the caps screwed on initially on the front side of the guide channel (3). The turntable (2) drives the cans (7) to the feeding wheel (4) along the predetermined track. The feeding wheel (4) sends multiple cans (7) to the capping mechanism in sequence. The capping mechanism first evacuates the cans (7) and then tightens the caps.

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