Automatic small vacuum cap screwing machine

Abstract

The utility model discloses an automatic small vacuum cap screwing machine which comprises a fixedly-arranged frame part, a bottle body conveying part horizontally penetrating through the frame part and a lifting part arranged on the side edge of the bottle body conveying part and located in the frame part, and a vacuum cap screwing part located above the bottle body conveying part is arranged at the lifting end of the lifting part. A bottle body positioning part corresponding to the vacuum cap screwing part is arranged on the side edge of the bottle body conveying part, the vacuum cap screwing part comprises a vacuum cover and a cap screwing head, the lower end of the cap screwing head is inserted into the vacuum cover, an air bag seat is fixedly connected to the bottom of the vacuum cover in a sealed mode, and a filling air bag communicated with external compressed air is arranged on the inner ring of the air bag seat. And the filling air bag is suitable for sealing and surrounding the bottle body in an inflating state and forming a vacuum space with the vacuum cover. The vacuum cap screwing machine is simple in overall structure, smaller in size and low in manufacturing cost, high-quality vacuum cap screwing can be achieved without placing the whole bottle body to be subjected to cap screwing in a vacuum space, and using is more flexible.

Description

Technical Field

[0001] This utility model relates to the field of vacuum capping technology, and in particular to an automatic small vacuum capping machine. Background Technology

[0002] A vacuum capping machine is a device used for vacuum capping and packaging glass jars made of tinplate. It is widely used in bottle packaging products. By vacuum capping and sealing the glass jars, it ensures that there is no air inside the jar, thereby improving the shelf life of the product inside. On the other hand, it ensures that the pressure inside the glass jar is lower than that outside, thus ensuring the strength of the connection.

[0003] Traditional vacuum capping machines place the entire bottle in a vacuum space, evacuate it, and then screw it on. The vacuum is then released, and this cycle is repeated continuously for production. The overall capping cost is relatively high, but for manufacturers with large-scale production, the investment in this type of equipment is not significant. However, despite the high demand and volume of vacuum capping machines, there are still some small manufacturers with low production requirements for whom choosing this type of machine is too expensive. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing an automatic miniature vacuum capping machine. The machine has a simple overall structure, is more compact, has low manufacturing costs, and can achieve high-quality vacuum capping without placing the entire bottle to be capped in a vacuum space, making it more flexible to use.

[0005] The technical solution to achieve the purpose of this utility model is:

[0006] An automatic miniature vacuum capping machine includes a fixed frame section, a bottle conveying section horizontally penetrating the frame section, and a lifting section located on the side of the bottle conveying section and within the frame section. The lifting end of the lifting section has a vacuum capping section located above the bottle conveying section. The side of the bottle conveying section has a bottle positioning section corresponding to the vacuum capping section. The vacuum capping section includes a vacuum cover and a capping head. The lower end of the capping head is inserted into the vacuum cover. The bottom of the vacuum cover is sealed and fixedly connected to an air bladder seat. The inner ring of the air bladder seat has an inflatable air bladder that communicates with external compressed air. The inflatable air bladder is adapted to seal and surround the bottle in an inflated state and form a vacuum space with the vacuum cover.

[0007] Furthermore, the lifting unit includes a fixedly mounted base and a first lifting cylinder mounted on the base. The piston rod of the first lifting cylinder is vertically upward and connected to the vacuum capping unit by a lifting adjustment unit.

[0008] Furthermore, the lifting adjustment part includes a lifting seat and a support sleeve and a tightening sleeve respectively fixed on the top and bottom surfaces of the lifting seat. The piston rod end of the first lifting cylinder is coaxially connected to a floating joint and a connecting rod in sequence. The tightening sleeve is sleeved on the connecting rod and is detachably fixed to the connecting rod by bolts. An adjusting screw is threadedly connected to the support sleeve. The lower end of the adjusting screw abuts against the top of the connecting rod. The vacuum cap part is installed on the lifting seat.

[0009] Furthermore, a guide rod assembly parallel to both sides of the first lifting cylinder is connected between the lifting seat and the base.

[0010] Furthermore, the vacuum hood is fixedly mounted on the bottom of the lifting seat, and the capping head includes a capping shaft that rotates through the lifting seat. The upper end of the capping shaft is gear-driven and connected to a capping motor and is coaxially mounted with a fixed seat. The lower end is fixedly connected to a capping main seat. Multiple grippers are evenly distributed along the circumference of the capping main seat. A second lifting cylinder is fixedly mounted on the fixed seat. The piston rod of the second lifting cylinder is vertically downward and connected to a pull rod that coaxially passes through the capping shaft. The lower end of the pull rod is drivenly connected to the grippers and is adapted to drive the grippers to close and open by moving up and down.

[0011] Furthermore, a guide plate is fixedly mounted on the lifting seat, and a strip-shaped groove extending in the vertical direction is opened on the guide plate. A directional rod inserted into the strip-shaped groove is provided on the side of the fixed seat. A roller with an outer circumferential surface that fits into the strip-shaped groove is rotatably mounted on the directional rod to prevent the fixed seat from rotating and affecting the air pipe arrangement of the second lifting cylinder.

[0012] Furthermore, the lower end of the capping main seat is provided with a slider that corresponds to the gripper and slides radially. The gripper is fixedly mounted on the corresponding slider. Above the slider is a lever block that is hinged to the capping main seat. The lower end of the pull rod is fixedly mounted with a push rod. The outer circumferential surface of the push rod is provided with an annular groove. The lever block has two free ends. One free end is movably locked in the annular groove, and the other free end is movably locked on the slider, thereby realizing that the pull rod drives the gripper to open and close.

[0013] Furthermore, the bottle positioning part includes a support plate fixedly mounted on the side of the bottle conveying part, and a bottle-stopping cylinder is fixedly mounted on the support plate. The piston rod of the bottle-stopping cylinder is horizontally arranged along the direction perpendicular to the bottle conveying direction and is fixedly connected to a stop knife.

[0014] Furthermore, a pre-swirl section is provided at the inlet of the bottle conveying section.

[0015] Furthermore, the pre-spinning section includes a belt clamping mechanism composed of lightweight clamping machines symmetrically installed on both sides of the bottle conveying section. Each lightweight clamping machine has an adjusting bracket on its side that is adjustable and height-adjustable on the bottle conveying section. The top of the adjusting bracket has an adjusting plate extending between the two lightweight clamping machines. The side of the adjusting plate has a fixing plate, and the inner side of the fixing plate is elastically fitted with a cap-rubbing plate.

[0016] Furthermore, a pressure plate is elastically installed at the bottom of the adjusting plate.

[0017] By adopting the above technical solution, this utility model has the following beneficial effects:

[0018] (1) This utility model transports the bottle with the cap pre-loaded to the vacuum capping unit through the bottle conveying unit. The vacuum capping unit is driven to move upward through the lifting unit, moving closer to and away from the bottle below. The vacuum capping unit cleverly uses the filling air bag. By inflating the filling air bag, it makes it seal in contact with the outer wall of the bottle, so that the cap to be capped and the upper part of the bottle can be in a vacuum space. Compared with the existing structure that places the entire bottle in a vacuum space, the structure is simpler, the equipment is smaller, the manufacturing cost is lower, and the use is more flexible.

[0019] (2) This utility model uses the first lifting cylinder as the power source of the lifting part, which has a simple structure. At the same time, the lifting adjustment part makes the vacuum capping part and the execution end of the lifting part adjustable, thereby realizing the initial position adjustment of the vacuum capping part and meeting the capping needs of bottles of different heights.

[0020] (3) The lifting adjustment part of this utility model achieves the sliding of the tightening sleeve and the connecting rod by loosening the bolt, and achieves the relative position change of the lifting seat and the connecting rod by rotating the adjusting screw. Then, the bolt is tightened to achieve the initial position adjustment of the vacuum cap part.

[0021] (4) This utility model improves the stability of the lifting and lowering movement of the vacuum capping part by adding a guide rod assembly.

[0022] (5) This utility model drives the pull rod to move up and down through the second lifting cylinder, thereby driving the gripper to clamp and release the bottle cap. The capping motor drives the capping spindle to rotate, thereby driving the bottle cap clamped by the lower gripper to rotate, thus realizing the capping function.

[0023] (6) The orientation part of this utility model pushes the stop knife to reciprocate through the bottle-stopping cylinder, thereby accurately stopping the conveyed bottle body below the capping head.

[0024] (7) By setting a pre-spinning part, this utility model enables the cap to be pre-spinned on the bottle body, avoiding the cap from falling off during transportation and improving the capping qualification rate.

[0025] (8) The height of the rubbing plate can be adjusted by adjusting the bracket so that it corresponds to the bottle cap. When the bottle with the bottle cap passes by, the bottle cap is pre-spinned onto the bottle under the action of the rubbing plate. No additional power source is required, and the structure is simple.

[0026] (9) By setting a pressure plate, this utility model prevents the bottle cap from jumping up and slipping during pre-spinning, thereby improving the stability of pre-spinning. Attached Figure Description

[0027] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein:

[0028] Figure 1 This is a perspective view of the present invention (the pre-rotated part is not shown in the figure);

[0029] Figure 2 This is a schematic diagram of the internal structure of this utility model;

[0030] Figure 3 This is a schematic diagram of the pre-spinning section structure of this utility model;

[0031] Figure 4 This is a partial structural diagram of the pre-spinning part of this utility model;

[0032] Figure 5 This is a schematic diagram of the installation structure of the lifting part and the vacuum capping part of this utility model;

[0033] Figure 6 This is a cross-sectional view of the vacuum screw cap part of this utility model.

[0034] The labels in the attached diagram are:

[0035] Frame section 1, Bottle conveying section 2, Lifting section 3, Base 3-1, First lifting cylinder 3-2, Vacuum capping section 4, Vacuum hood 4-1, Airbag seat 4-2, Filling airbag 4-3, Capping shaft 4-4, Capping motor 4-5, Fixing seat 4-6, Capping main seat 4-7, Gripper 4-8, Slider 4-9, Toggle block 4-10, Second lifting cylinder 4-11, Pull rod 4-12, Top rod 4-13, Directional rod 4-14 4-15 Roller, 5 Bottle positioning part, 5-1 Support plate, 5-2 Bottle blocking cylinder, 5-3 Baffle, 6 Pre-rotation part, 6-1 Lightweight clamping machine, 6-2 Adjusting bracket, 6-3 Adjusting plate, 6-4 Fixing plate, 6-5 Capping plate, 6-6 Pressing plate, 7 Lifting adjustment part, 7-1 Lifting seat, 7-2 Support sleeve, 7-3 Tightening sleeve, 7-4 Floating joint, 7-5 Connecting rod, 7-6 Adjusting screw, 8 Guide rod assembly. Detailed Implementation

[0036] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0037] (Example 1)

[0038] like Figures 1 to 6 The automatic miniature vacuum capping machine shown includes a frame section 1, a bottle conveying section 2, and a lifting section 3, a vacuum capping section 4, and a bottle positioning section 5 disposed within the frame section 1. The bottle conveying section 2 is horizontally positioned through the frame section 1 and is used to convey bottles pre-loaded with caps. The lifting section 3 and the bottle positioning section 5 are located on opposite sides of the bottle conveying section 2. The lifting section 3's actuator is connected to the vacuum capping section 4, driving the vacuum capping section 4 to move up and down. The bottle positioning section 5 is located below the vacuum capping section 4 and is used to limit the conveyed bottles, preparing them for automatic capping. The vacuum capping unit 4 includes a vacuum cover 4-1 and a capping head. The lower end of the capping head is inserted into the vacuum cover 4-1. The bottom of the vacuum cover 4-1 is sealed and fixedly connected to an airbag seat 4-2. The inner ring of the airbag seat 4-2 is provided with an inflatable airbag 4-3 that communicates with external compressed air. The inflatable airbag 4-3 is suitable for sealing and surrounding the bottle body in the inflated state and forming a vacuum space with the vacuum cover 4-1, so that the cap to be capped and the upper part of the bottle body can be in the vacuum space. Compared with the existing structure that completely places the entire bottle body in the vacuum space, the structure is simpler, the equipment is smaller, the manufacturing cost is lower, and the use is more flexible.

[0039] Specifically, to prevent the bottle cap from falling off during transport before tightening, this embodiment provides a pre-spinning section 6 at the entrance of the bottle conveying section 2. The pre-spinning section 6 includes a belt clamping mechanism consisting of lightweight clamping machines 6-1 symmetrically installed on both sides of the bottle conveying section 2. Each lightweight clamping machine 6-1 has an adjusting bracket 6-2 on its side. The adjusting bracket 6-2 is mounted on the bottle conveying section 2 in an adjustable manner via bolts and elongated through slots. The top of the adjusting bracket 6-2 has an adjusting plate 6-3 extending between the two lightweight clamping machines 6-1. The side of the adjusting plate 6-3 has a fixing plate 6-4. The inner side of the fixing plate 6-4 has a cap-rubbing plate 6-5. The bottom of the adjusting plate 6-3 has a cap-pressing plate 6-6. The cap-rubbing plate 6-5 and the cap-pressing plate 6-6 are elastically connected to the fixing plate 6-4 and the adjusting plate 6-3 respectively via pins and springs sleeved on the pins. The height of the capping plate 6-5 and the pressure plate 6-6 can be adjusted by adjusting the bracket 6-2 so that they correspond exactly to the bottle cap. When the bottle with the cap is placed on it passes by, the pressure plate 6-6 presses the cap tightly onto the bottle mouth and pre-screws it onto the bottle under the action of the capping plate. No additional power source is required, and the structure is simple.

[0040] The bottle positioning part 5 includes a support plate 5-1 fixedly mounted on the side of the bottle conveying part 2. A bottle-stopping cylinder 5-2 is fixedly mounted on the support plate 5-1. The piston rod of the bottle-stopping cylinder 5-2 is horizontally arranged perpendicular to the bottle conveying direction and is fixedly connected to a stop knife 5-3. The bottle-stopping cylinder 5-2 pushes the stop knife 5-3 to reciprocate, thereby accurately stopping the conveyed bottle below the capping head.

[0041] To improve capping efficiency, this embodiment includes three sets of vacuum capping sections 4, corresponding to three sets of lifting sections 3 and four sets of bottle positioning sections 5. Each lifting section 3 includes a fixed base 3-1 and a first lifting cylinder 3-2 mounted on the base 3-1. The piston rod of the first lifting cylinder 3-2 is vertically upward and connected to a lifting adjustment section 7 between it and the vacuum capping section 4. The lifting adjustment section 7 allows for adjustable height between the vacuum capping section 4 and the lifting section 3, thereby adjusting the initial position of the vacuum capping section 4 to meet the capping requirements of bottles of different heights.

[0042] The lifting adjustment unit 7 includes a lifting seat 7-1 and a support sleeve 7-2 and a tightening sleeve 7-3 respectively fixed to the top and bottom surfaces of the lifting seat 7-1. A floating joint 7-4 and a connecting rod 7-5 are coaxially connected to the piston rod end of the first lifting cylinder 3-2. The tightening sleeve 7-3 is fitted onto the connecting rod 7-5 and detachably fixed to it with bolts. An adjusting screw 7-6 is threaded onto the support sleeve 7-2, with the lower end of the adjusting screw 7-6 abutting against the top of the connecting rod 7-5. The vacuum capping unit 4 is mounted on the lifting seat 7-1. Loosening the bolts allows the tightening sleeve 7-3 to slide against the connecting rod 7-5. Rotating the adjusting screw 7-6 changes the relative position of the lifting seat 7-1 and the connecting rod 7-5. Tightening the bolts then adjusts the initial position of the vacuum capping unit 4, meeting the capping requirements of bottles of different heights. To improve the smoothness of the lifting motion, a guide rod assembly 8 is provided between the lifting seat 7-1 and the base 3-1, which is parallel to both sides of the first lifting cylinder 3-2.

[0043] Vacuum hood 4-1 is fixedly mounted on the bottom of lifting seat 7-1. The capping head includes a capping shaft 4-4 that rotates through the lifting seat 7-1. The upper end of the capping shaft 4-4 is gear-driven and connected to a capping motor 4-5, and a fixed seat 4-6 is coaxially rotatable. The lower end is fixedly connected to a capping main seat 4-7. Three grippers 4-8 are evenly distributed circumferentially on the capping main seat 4-7. The lower end of the capping main seat 4-7 is provided with a slider 4-9 that corresponds to the grippers 4-8 and slides radially. The grippers 4-8 are fixedly mounted on the corresponding sliders 4-9. Above the sliders 4-9 is a lever 4-10 that is hinged to the capping main seat 4-7. A second lifting cylinder 4-11 is fixedly mounted on the fixed base 4-6. The piston rod of the second lifting cylinder 4-11 is set vertically downward and connected to a pull rod 4-12 that coaxially passes through the capping shaft 4-4. A top rod 4-13 is fixedly mounted at the lower end of the pull rod 4-12. An annular groove is provided on the outer circumference of the top rod 4-13. The toggle block 4-10 has two free ends. One free end is movably locked in the annular groove, and the other free end is movably locked on the slider 4-9. The up and down movement of the pull rod 4-12 drives the gripper to close and open.

[0044] A guide plate 4-13 is also fixedly installed on the lifting seat 7-1. The guide plate 4-13 has a strip groove extending in the vertical direction. The side of the fixed seat 4-6 is provided with a directional rod 4-14 inserted into the strip groove. A roller 4-15 with its outer circumference in contact with the strip groove is rotatably installed on the directional rod 4-14 to prevent the fixed seat 4-6 from rotating and affecting the air pipe arrangement of the second lifting cylinder 4-11.

[0045] The workflow of this embodiment is as follows: After pre-screwing, the bottle enters the vacuum capping section 4. The bottle is stopped at the capping station by the baffle. The first lifting cylinder 3-2 is a double-stroke cylinder. The vacuum hood 4-1 is driven to descend by the double-stroke cylinder. During the first stroke, the filling air bag 4-3 is inflated to seal, and the vacuum hood 4-1 is evacuated to form a vacuum space. During the second stroke, the capping head begins to cap. After the capping is completed, the filling air bag 4-3 is deflated, and the vacuum space is converted to normal pressure. The double-stroke cylinder drives the vacuum hood 4-1 to rise, the baffle puts the bottle down, and the bottle body conveying section 2 sends out the capped bottle, completing the capping process.

[0046] This invention uses a bottle conveying unit 2 to transport a bottle pre-loaded with a cap to a vacuum capping unit 4. A lifting unit 3 moves the vacuum capping unit 4 upwards, moving it closer to and away from the bottle below. The vacuum capping unit 4 cleverly utilizes an inflatable airbag 4-3. By inflating the airbag 4-3, it achieves a sealed contact with the outer wall of the bottle, allowing the cap to be capped and the upper part of the bottle to be in a vacuum space. Compared to existing structures that completely place the entire bottle in a vacuum space, this design is simpler, more compact, has lower manufacturing costs, and is more flexible in use.

[0047] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An automatic small vacuum capping machine, characterized in that: The device includes a fixed frame section, a bottle conveying section horizontally penetrating the frame section, and a lifting section located on the side of the bottle conveying section and within the frame section. The lifting end of the lifting section has a vacuum capping section located above the bottle conveying section. The side of the bottle conveying section has a bottle positioning section corresponding to the vacuum capping section. The vacuum capping section includes a vacuum cover and a capping head. The lower end of the capping head is inserted into the vacuum cover. The bottom of the vacuum cover is sealed and fixedly connected to an airbag seat. The inner ring of the airbag seat has an inflatable airbag that communicates with external compressed air. The inflatable airbag is adapted to seal and surround the bottle in an inflated state and form a vacuum space with the vacuum cover.

2. The automatic small vacuum capping machine according to claim 1, characterized in that: The lifting unit includes a fixed base and a first lifting cylinder mounted on the base. The piston rod of the first lifting cylinder is vertically upward and connected to the vacuum capping unit by a lifting adjustment unit.

3. An automatic small vacuum capping machine according to claim 2, characterized in that: The lifting adjustment part includes a lifting seat and a support sleeve and a tightening sleeve respectively fixed on the top and bottom surfaces of the lifting seat. The piston rod end of the first lifting cylinder is coaxially connected to a floating joint and a connecting rod in sequence. The tightening sleeve is sleeved on the connecting rod and is detachably fixed to the connecting rod by bolts. An adjusting screw is threadedly connected to the support sleeve. The lower end of the adjusting screw abuts against the top of the connecting rod. The vacuum cap part is installed on the lifting seat.

4. An automatic small vacuum capping machine according to claim 3, characterized in that: The lifting seat and the base are connected by guide rod assemblies arranged parallel to both sides of the first lifting cylinder.

5. An automatic small vacuum capping machine according to claim 2, characterized in that: The vacuum hood is fixedly mounted on the bottom of the lifting base. The capping head includes a capping shaft that rotates through the lifting base. The upper end of the capping shaft is gear-driven and connected to a capping motor and is coaxially mounted with a fixed seat. The lower end is fixedly connected to a capping main seat. Multiple grippers are evenly distributed along the circumference of the capping main seat. A second lifting cylinder is fixedly mounted on the fixed seat. The piston rod of the second lifting cylinder is vertically downward and connected to a pull rod that coaxially passes through the capping shaft. The lower end of the pull rod is drivenly connected to the grippers and is adapted to drive the grippers to close and open by moving up and down.

6. An automatic small vacuum capping machine according to claim 5, characterized in that: A guide plate is fixedly mounted on the lifting seat. A strip groove extending in the vertical direction is opened on the guide plate. A directional rod inserted into the strip groove is provided on the side of the fixed seat. A roller with its outer circumference in contact with the strip groove is rotatably mounted on the directional rod.

7. An automatic small vacuum capping machine according to claim 1, characterized in that: The bottle positioning part includes a support plate fixedly mounted on the side of the bottle conveying part. A bottle-stopping cylinder is fixedly mounted on the support plate. The piston rod of the bottle-stopping cylinder is horizontally arranged perpendicular to the bottle conveying direction and fixedly connected to a stop knife.

8. An automatic small vacuum capping machine according to claim 1, characterized in that: The inlet of the bottle conveying section is provided with a pre-rotation section.

9. An automatic small vacuum capping machine according to claim 8, characterized in that: The pre-rotation section includes a belt clamping mechanism consisting of lightweight clamping machines symmetrically installed on both sides of the bottle conveying section. Each lightweight clamping machine has an adjustable bracket on its side that is adjustable and height-adjustable on the bottle conveying section. The top of the adjustable bracket has an adjusting plate extending between the two lightweight clamping machines. The side of the adjusting plate has a fixing plate, and the inner side of the fixing plate is elastically fitted with a cap-rubbing plate.

10. An automatic small vacuum capping machine according to claim 9, characterized in that: A pressure plate is elastically installed at the bottom of the adjustment plate.

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