Four-shaft multi-specification cap screwing device

Abstract

A four-shaft multi-specification cap screwing device is characterized in that a square frame body comprises a top plate, a bottom plate and two side plates fixedly connected between the top plate and the bottom plate, a motor is mounted on the top plate, a driving shaft of the motor is connected with a four-shaft speed reducer, and four universal couplings are connected with four output ends of the four-shaft speed reducer; two guide columns are arranged between the lower portions of the two side plates side by side, two sliding seats are connected to the guide columns in a sliding mode, first air cylinders connected with the middles of the outer side faces of the sliding seats are arranged on the outer sides of the sliding seats, two cap screwing shafts are rotationally installed in the sliding seats side by side, cap screwing wheels are connected to the lower ends of the cap screwing shafts, and the upper ends of the cap screwing shafts are connected with corresponding peripheral universal couplings. According to the cap screwing device, power of the motor is transmitted to the opposite cap screwing wheels below through the four universal couplings, cap screwing packaging is achieved by pressing the four cap screwing wheels on the side face of a bottle cap, the cap screwing wheels can relatively rotate on the outer side face of the bottle cap after the bottle cap is screwed, and the phenomenon that the screwing force of the bottle cap is too large is avoided; and the screw cap packaging quality can be improved.

Description

Technical Field

[0001] This utility model relates to the field of packaging equipment, and in particular to a four-axis multi-specification capping device. Background Technology

[0002] A capping machine, also known as a sealing machine or screw capping machine, is a packaging equipment widely used in the food, beverage, pharmaceutical, and chemical industries. Its main function is to seal containers (such as bottles) by rotating the cap to secure it tightly to the container opening, ensuring the product's airtightness, thereby extending shelf life and preventing leakage and contamination.

[0003] Utility model patent application number CN202320475955.7 discloses a capping mechanism for a capping machine, including a rotating shaft, a capping head and grippers mounted on the rotating shaft. The upper end of the grippers is hinged to the capping head, and there are at least three grippers. All grippers are equidistantly spaced along the circumference of the capping head. A silicone or rubber clamping block is fixed on the inner side wall of the lower end of the grippers. A positioning block that can elastically float vertically is provided on the inner side of the grippers directly below the capping head, and the positioning block can abut against the top surface of the bottle cap. The silicone or rubber clamping block of this structure has a certain degree of elasticity, avoiding rigid contact with the outer wall of the bottle cap, and the outer wall of the bottle cap is not easily scratched. However, this capping mechanism has the problem of a large clamping force of the grippers on the bottle cap. High-precision control of the rotational torque of the rotating shaft is required to ensure that the bottle cap reaches a suitable tightening force, which is not conducive to ensuring the quality of bottle capping and packaging, and needs to be improved. Utility Model Content

[0004] To solve the above problems, this utility model proposes a four-axis multi-specification capping device.

[0005] The technical solution of this utility model is as follows: a four-axis multi-specification capping device, comprising a square frame, four universal couplings, and four capping wheels. The square frame includes a top plate, a bottom plate, and two side plates fixedly connected between the top plate and the bottom plate. The top plate and the side plates are fixedly connected as one unit by screws. A motor is installed on the top plate, and the drive shaft of the motor is connected to a four-axis reducer. The four universal couplings are connected to the four output ends of the four-axis reducer. The universal couplings are vertically connected to the lower ends of the four-axis reducer. Two guide posts are arranged side by side between the lower parts of the two side plates. Two slide blocks are slidably connected to the guide posts. Two sliding holes are arranged side by side on the slide blocks. The sliding holes are fitted into the guide posts. A cylinder A is provided on the outer side of the slide block and connected to the middle of its outer side. The telescopic rod of the cylinder is fixedly connected to the slide block. Two capping shafts are rotatably installed side by side inside the slide block. The capping wheels are connected to the lower ends of the capping shafts. The upper ends of the capping shafts are connected to the corresponding four-axis universal couplings. The four universal couplings are respectively connected to the four capping shafts.

[0006] Preferably, a pressure cap shaft is provided between the four universal couplings, and a pressure cap head is provided at the lower end of the pressure cap shaft. The pressure cap head is located above the capping wheel. Two vertical slide rods are provided on a square frame on one side of the pressure cap shaft. A lifting seat is connected between the vertical slide rods. The outer end of the lifting seat is connected to the upper end of the pressure cap shaft. A fixed seat is provided between the middle parts of the two slide rods. The fixed seat and the lifting seat are arranged parallel to each other. A cylinder B connected to the lifting seat is installed on the fixed seat.

[0007] Preferably, a limit adjustment mechanism is provided on one side of the two slide blocks. The limit adjustment mechanism includes two blocks slidably connected to the support column. A limit block corresponding to the position of the block is provided on the end face of the slide block. A bidirectional screw is threadedly connected between the two blocks. The clockwise threaded section of the bidirectional screw is connected to the threaded hole on one side of the slide block, and the counterclockwise threaded section is connected to the threaded hole on the other side of the slide block. A handwheel is provided at the outer end of the bidirectional screw.

[0008] Preferably, the four-axis reducer includes four driven gears disposed at the four corners of the housing, the upper end of a universal coupling is connected to the driven gears, a driving gear is disposed between the four driven gears, the four driven gears mesh on the circumference of the driving gear, and the driving gear is connected to the output shaft of the motor.

[0009] Preferably, the slide is provided with a bushing, and bearings are installed at both ends of the bushing. The capping shaft is rotatably mounted inside the bushing, and the lower end of the bushing is close to the capping wheel. There is a certain distance between the capping wheel and the lower end of the bushing.

[0010] Preferably, the top plate is provided with a pressure cover adjusting screw, the upper end of the pressure cover adjusting screw is provided with a handwheel, and the pressure rod adjusting screw passes through the lifting seat and is threadedly connected to the fixed seat below.

[0011] The beneficial technical effects of this utility model are:

[0012] (1) The capping device transmits the power of the motor to the capping rollers below through four universal couplings. The capping rollers press against the side of the bottle cap to achieve capping packaging. After the bottle cap is tightened, the capping rollers can rotate relative to the outer side of the bottle cap, avoiding the phenomenon of excessive tightening force of the bottle cap and improving the quality of capping packaging.

[0013] (2) The capping device is provided with a limiting block at the end of the slide and a stop block on the outside of the limiting block. The sliding stroke of the slide is limited by the corresponding limiting blocks and stop blocks, so as to ensure that the lower capping wheel clamps the platform with the same force each time. It can also drive the two stop blocks to slide in opposite directions through the bidirectional screw, so as to conveniently and quickly adjust the movement stroke of the capping wheel and make it suitable for capping and packaging of bottle caps of various sizes. Attached Figure Description

[0014] Figure 1This is one of the three-dimensional structural schematic diagrams of this utility model;

[0015] Figure 2 This is the second three-dimensional structural schematic diagram of this utility model;

[0016] Figure 3 This is a schematic diagram of the main structure of this utility model;

[0017] Figure 4 yes Figure 3 A schematic diagram of the AA-direction cross-section structure;

[0018] Figure 5 yes Figure 3 Schematic diagram of the BB-direction cross-section structure;

[0019] Figure 6 It is a three-dimensional structural diagram of the universal coupling, slide, and cap shaft;

[0020] Figure 7 This is a three-dimensional structural diagram of the capping head and the adjustment mechanism.

[0021] In the diagram, 1. Square frame, 2. Universal coupling, 21. Capping shaft, 22. Capping wheel, 23. Bushing, 3. Four-axis reducer, 31. Housing, 32. Driven gear, 33. Driven gear, 4. Motor, 51. Guide column, 52. Slide block, 53. Cylinder A, 6. Capping shaft, 61. Capping head, 62. Vertical slide rod, 63. Lifting seat, 64. Fixed seat, 65. Cylinder B, 66. Capping adjusting screw, 71. Support column, 72. Stop block, 73. Limit block, 74. Bidirectional screw, 75. Handwheel. Detailed Implementation

[0022] Example 1, see appendix Figure 1-6 A four-axis multi-specification capping device includes a square frame 1, four universal couplings 2, and four capping wheels 22. The square frame 1 includes a top plate, a bottom plate, and two side plates fixedly connected between the top plate and the bottom plate. A motor 4 is mounted on the top plate, and the drive shaft of the motor 4 is connected to a four-axis reducer 3. The four universal couplings 2 are connected to the four output ends of the four-axis reducer 3. The motor 4 transmits power synchronously to the four universal couplings 2 through the four-axis reducer. The lower parts of the two side plates are arranged side by side. Two guide posts 51 are provided, and two slide blocks 52 are slidably connected to the guide posts 51. A cylinder A 53 is provided on the outer side of the slide block and connected to the middle of its outer side. The cylinder A 53 drives the slide block 52 to slide along the guide posts 51. Two capping shafts 21 are mounted side by side inside the slide block 52. The capping wheel 22 is connected to the lower end of the capping shaft 21. The upper end of the capping shaft 21 is connected to the corresponding universal coupling 2. The universal coupling 2 transmits power to the capping shaft 21, and the capping shaft rotates with the capping wheel at its lower end.

[0023] The four-axis reducer 3 includes four driven gears 32 located at the four corners of the housing 31. The upper end of the universal coupling 2 is connected to the driven gears 32. A driving gear 33 is provided between the four driven gears 32. The size of the driving gear 33 is larger than that of the driven gears 32. The driving gear 33 is connected to the output shaft of the motor 4. The motor 4 drives the driving gear 33 to rotate. The driving gear 33 synchronously drives the four driven gears 32 to rotate. The driven gears 32 drive the capping shaft 21 to rotate through the universal coupling 2.

[0024] The slide block 52 is provided with a bushing 23, and the capping shaft 21 is rotatably fitted inside the bushing 23. The lower end of the bushing 23 is close to the capping wheel 22. The bushing 23 is used to provide stable rotational support for the capping shaft 21.

[0025] A limiting adjustment mechanism is provided on one side of each of the two slide blocks 52. This limiting adjustment mechanism includes two stops 72 slidably connected to the support column 71. A limiting block 73 corresponding to the position of the stops 72 is provided on the end face of the slide block 52. A double-acting screw 74 is threaded between the two stops 72, and a handwheel 75 is provided at the outer end of the double-acting screw 74. The sliding stroke of the slide block 52 is limited by the corresponding limiting blocks 73 and stops 72, ensuring that the lower capping wheel 22 clamps the platform with the same force each time. The double-acting screw 74 can synchronously drive the two stops 72 to slide in opposite directions, making it convenient and quick to adjust the movement stroke of the capping wheel 22, so that it can be used for capping packaging of various sizes of bottle caps.

[0026] When the capping device of this embodiment is in use, the starter motor 4 drives the drive gear 33 in the four-axis reducer 3 to rotate. The drive gear 33 synchronously drives the four driven gears 32 to rotate. The driven gears 32 drive the universal coupling 2 to rotate. The universal coupling 2 transmits power to the capping shaft 21. The capping shaft 21 drives the capping wheel 22 below to rotate. Then, the cylinders on both sides are started to drive the two slide blocks 52 to slide towards each other along the guide post 51. The slide blocks 52 on both sides move towards each other with the capping wheel 22 below to hold the bottle cap. During the movement of the slide blocks 52, the universal coupling 2 extends and retracts accordingly to ensure power transmission. The rotational force of the capping wheel 22 drives the bottle cap to be tightened at the mouth of the packaging bottle.

[0027] Example 2, see appendix Figure 2-37. This embodiment is basically the same as embodiment one, and the similarities will not be repeated. The difference is that: a pressure cover shaft 6 is provided between the four universal couplings 2, and a pressure cover head 61 is provided at the lower end of the pressure cover shaft 6. Two vertical sliding rods 62 are provided on the square frame 1 on one side of the pressure cover shaft 6. A lifting seat 63 is connected between the vertical sliding rods 62. The outer end of the lifting seat 63 is connected to the upper end of the pressure cover shaft 6. The lifting seat 63 slides along the sliding rods, thereby moving the pressure cover shaft 6 and the pressure cover head 61 up and down. A fixed seat 64 is provided between the middle of the two sliding rods. A cylinder B 65 connected to the lifting seat 63 is installed on the fixed seat 64. The piston rod of the cylinder B 65 is fixedly connected or hinged to the middle of the bottom surface of the lifting seat 63.

[0028] The top plate is equipped with a capping adjustment screw 66, which passes through the lifting seat 63 and is threadedly connected to the fixed seat 64 below. A handwheel 75 is provided at the upper end of the adjustment screw. When adjusting the height of the capping head 61 by adjusting the screw, loosen the set screw on the fixed seat 64, rotate the handwheel 75 to drive the adjustment screw to rotate, and the adjustment screw drives the fixed seat 64 to slide along the vertical slide bar 62 through the bolt. The fixed seat 64, together with the lifting seat 63, adjusts the height as a whole. After the adjustment is completed, tighten the set screw again so that the capping head 61 can adapt to bottle caps of different heights.

Claims

1. A four-axis multi-specification capping device, characterized in that: The device includes a square frame, four universal couplings, and four capping wheels. The square frame consists of a top plate, a bottom plate, and two side plates fixedly connected between the top and bottom plates. A motor is mounted on the top plate, and the motor's drive shaft is connected to a four-axis reducer. The four universal couplings are connected to the four output ends of the four-axis reducer. Two guide pillars are arranged side by side between the lower parts of the two side plates. Two slide blocks are slidably connected to the guide pillars. A cylinder is located on the outer side of the slide block and connected to the center of its outer side. Two capping shafts are rotatably mounted side by side inside the slide blocks. The capping wheels are connected to the lower end of the capping shafts, and the upper end of the capping shafts is connected to the corresponding four-sided universal couplings.

2. The four-axis multi-specification cap screwing device according to claim 1, characterized in that: A pressure cover shaft is provided between the four universal couplings. A pressure cover head is provided at the lower end of the pressure cover shaft. Two vertical slide rods are provided on a square frame on one side of the pressure cover shaft. A lifting seat is connected between the vertical slide rods. The outer end of the lifting seat is connected to the upper end of the pressure cover shaft. A fixed seat is provided between the middle of the two slide rods. A cylinder B connected to the lifting seat is installed on the fixed seat.

3. The four-axis multi-specification cap screwing device according to claim 2, characterized in that: The top plate is equipped with a pressure plate adjusting screw, which passes through the lifting seat and is threadedly connected to the fixed seat below.

4. The four-axis multi-specification cap screwing device according to claim 1, characterized in that: One side of each of the two slide blocks is provided with a limit adjustment mechanism, which includes two stops slidably connected to the support column, and a limit block corresponding to the position of the stops is provided on the end face of the slide block. A two-way lead screw is threaded between the two stops, and a handwheel is provided at the outer end of the two-way lead screw.

5. The four-axis multi-specification cap screwing device according to claim 1, characterized in that: The four-axis reducer includes four driven gears located at the four corners of the housing. The upper end of the universal coupling is connected to the driven gears. A driving gear is provided between the four driven gears and is connected to the output shaft of the motor.

6. The four-axis multi-specification cap screwing device according to claim 1, characterized in that: The slide is provided with a bushing, and the capping shaft is rotatably fitted inside the bushing, with the lower end of the bushing close to the capping wheel.

Images