CN112810161B - Automatic ultrasonic heat sealing device and packaging machine for preventing finger pinching - Google Patents
Automatic ultrasonic heat sealing device and packaging machine for preventing finger pinchingInfo
- Publication number
- CN112810161B CN112810161B CN202110171653.6A CN202110171653A CN112810161B CN 112810161 B CN112810161 B CN 112810161B CN 202110171653 A CN202110171653 A CN 202110171653A CN 112810161 B CN112810161 B CN 112810161B
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- CN
- China
- Prior art keywords
- heat
- heat sealing
- sealing
- controlled valve
- control module
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/87—Auxiliary operations or devices
- B29C66/874—Safety measures or devices
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Package Closures (AREA)
Abstract
The invention relates to an automatic ultrasonic heat sealing device for preventing a clamping hand, which comprises an ultrasonic generator, a heat sealing upper die, a heat sealing lower die, a driving mechanism and an electric control module, wherein the ultrasonic generator is connected with the heat sealing upper die, the heat sealing lower die is connected with the heat sealing upper die through a rotating shaft, the driving mechanism is connected with the electric control module and is connected with the heat sealing lower die to drive the heat sealing lower die to rotate around the rotating shaft, a magnetic switch for detecting the gap distance between the heat sealing upper die and the heat sealing lower die is arranged on the heat sealing upper die, the electric control module firstly controls the driving mechanism to drive the heat sealing lower die to be closed towards the heat sealing upper die with a small driving force, and after a safety signal of the magnetic switch is received, the driving mechanism is controlled to drive the heat sealing lower die to be closed towards the heat sealing upper die with a large driving force. Compared with the prior art, the invention detects the gap distance between the upper die and the lower die through the magnetic switch, adopts smaller safety driving force when the gap distance is larger than the safety distance, avoids clamping hands, and improves the safety of the ultrasonic heat sealing device.
Description
Technical Field
The invention relates to the field of ultrasonic heat sealing, in particular to an automatic ultrasonic heat sealing device capable of preventing a hand from being clamped.
Background
At present, various packaging bags exist in the powder packaging industry, and various corresponding bag opening heat sealing devices are different. For the bag made of PE, the conventional bag mouth heat sealing device is usually heated by an electric heating strip, and is classified into an instant heating type and a constant temperature heating type. The instant heating type is to switch in short-time heavy current to the heating strip after the mechanism clamps the bag mouth, so that the heating strip is instantly heated to the PE melting point to achieve the heat sealing effect. The constant-temperature heating type is to switch on the heating strip continuously and stably, so that the temperature of the heating strip is always kept at a certain specific value near the melting point of PE, and the method can burn workers and the like because of the continuous high temperature of a heating part and has high energy consumption. In addition, the traditional heat sealing device has the action of closing the bag clamping opening by the movement of the mechanism no matter what principle is adopted, the action has no comprehensive protective measures, and once a worker misoperates the bag clamping opening for placing the bag opening, the worker puts hands into the bag clamping opening, so that serious consequences such as clamping injury and the like are caused.
In order to solve the burn problem, a person skilled in the art developed an ultrasonic heat sealing device, especially it can drive the heat-sealing die to vibrate at high frequency, so that the PE layer material clamped between the upper die and the lower die is melted by heat generation due to the high-frequency vibration, and therefore high temperature cannot be remained, but the ultrasonic heat sealing device does not have high temperature, under the condition that the heat air conduction warning is lost, and the lower die adopts a semicircular lower die generally, so that the hand is clamped more easily due to great significance.
Disclosure of Invention
The invention aims to provide an automatic ultrasonic heat sealing device capable of preventing hands from being clamped, a gap distance between an upper die and a lower die is detected through a magnetic switch, and a smaller safety driving force is adopted when the gap distance is larger than a safety distance, so that the hands are prevented from being clamped, and the safety of the ultrasonic heat sealing device is improved.
The aim of the invention can be achieved by the following technical scheme:
The utility model provides an automatic ultrasonic heat sealing device of tong is prevented, includes ultrasonic generator, heat-seal upper die, heat-seal lower die and actuating mechanism, electric control module, ultrasonic generator is connected with heat-seal upper die, heat-seal lower die is connected through pivot and heat-seal upper die, actuating mechanism is connected with electric control module to connect heat-seal lower die in order to drive heat-seal lower die around the pivot rotates, its characterized in that, heat-seal upper die is last to be equipped with and is used for detecting heat-seal upper die and heat-seal lower die clearance distance's magnetic switch, and this magnetic switch is connected with electric control module, electric control module is configured to carry out following steps:
when the heat sealing operation is needed, the driving mechanism is controlled to drive the heat sealing lower die to close towards the heat sealing upper die by the first driving force;
When a safety signal of the magnetic switch is received, the driving mechanism is controlled to drive the heat sealing lower die to be closed towards the heat sealing upper die through a second driving force, wherein the second driving force is larger than the first driving force, and the safety signal characterizes that the gap distance between the heat sealing upper die and the heat sealing lower die is smaller than or equal to a set distance.
The driving mechanism comprises two opposite clamping air cylinders.
The electric control module comprises a controller, an air source, a first controlled valve and a pressure reducing valve, wherein the output end of the air source is connected to the two opposite clamping cylinders through the first controlled valve and the pressure reducing valve in sequence, and the first controlled valve is connected with the controller.
The first controlled valve is a solenoid valve.
The device also comprises a lifting mechanism for adjusting the heights of the upper heat sealing die and the lower heat sealing die, and the lifting mechanism is connected with the upper heat sealing die.
The lifting mechanism is a lifting cylinder.
The electric control module comprises a controller, an air source and a second controlled valve, wherein the output end of the air source is connected to the lifting cylinder through the second controlled valve, and the second controlled valve is connected with the controller.
The second controlled valve is an electromagnetic valve.
The set distance is 4 mm.
A packaging machine comprising an ultrasonic heat sealing device as described above.
Compared with the prior art, the invention has the following beneficial effects:
1) The gap distance between the upper die and the lower die is detected through the magnetic switch, and smaller safety driving force is adopted when the gap distance is larger than the safety distance, so that the hand is prevented from being injured by clamping, and the safety of the ultrasonic heat sealing device is improved.
2) Two opposite clamping cylinders are adopted, and the opening and closing action process of the opposite clamping is more stable.
3) The adoption of the distance of 4 mm as the safety distance can ensure safety and improve efficiency.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention;
FIG. 2 is a schematic diagram of a magnetic switch according to an embodiment of the present invention;
FIG. 3 is a schematic view showing an opened state of a heat-sealing lower die according to an embodiment of the present invention;
FIG. 4 is a schematic view showing a thermal module moving downward according to an embodiment of the present invention;
FIG. 5 is a schematic view showing a closing state of a heat-seal lower die according to an embodiment of the present invention;
FIG. 6 is an electrical schematic diagram of an electrical control module according to an embodiment of the invention;
Wherein: 1, a fixing frame, 2, a pressure reducing valve, 3, a third controlled valve, 4, a lifting cylinder, 5, an ultrasonic generator, 6, a butt clamping cylinder, 7, a bag mouth pressing plate, 8, a valve port bag, 9, a heat sealing lower die, 10, a heat sealing upper die, 11, a dust removing nozzle, 12, a magnetic switch, 13, an air source, 14, a first controlled valve, 15, a double-joint valve plate, 16, a second controlled valve, 17, a muffler, 18 and a throttle valve.
Detailed Description
The invention will now be described in detail with reference to the drawings and specific examples. The present embodiment is implemented on the premise of the technical scheme of the present invention, and a detailed implementation manner and a specific operation process are given, but the protection scope of the present invention is not limited to the following examples.
An automatic ultrasonic heat sealing device capable of preventing clamping hands, which can be applied to a full-automatic powder packaging machine of a valve pocket, as shown in fig. 1, comprises an ultrasonic generator 5, a heat sealing upper die 10, a heat sealing lower die 9, a driving mechanism and an electric control module, wherein the heat sealing lower die 9 is a semicircular lower die with high strength and high toughness, the ultrasonic generator 5 is connected with the heat sealing upper die 10, the heat sealing lower die 9 is connected with the heat sealing upper die 10 through a rotating shaft, the driving mechanism is connected with the electric control module and is connected with the heat sealing lower die 9 to drive the heat sealing lower die 9 to rotate around the rotating shaft, and the automatic ultrasonic heat sealing device is characterized in that a magnetic switch 12 for detecting the gap distance between the heat sealing upper die 10 and the heat sealing lower die 9 is arranged on the heat sealing upper die 10, as shown in fig. 2, the magnetic switch 12 is connected with the electric control module, and the electric control module is configured to execute the following steps:
When the heat sealing operation is needed, the driving mechanism is controlled to drive the heat sealing lower die 9 to close to the heat sealing upper die 10 by the first driving force;
When the safety signal of the magnetic switch 12 is received, the driving mechanism is controlled to drive the heat sealing lower die 9 to close towards the heat sealing upper die 10 by a second driving force, wherein the second driving force is larger than the first driving force, and the safety signal indicates that the gap distance between the heat sealing upper die 10 and the heat sealing lower die 9 is smaller than or equal to the set distance.
The gap distance between the upper die and the lower die is detected through the magnetic switch, smaller safe driving force is adopted when the gap distance is larger than the safe distance, hand clamping is avoided, the safety of the ultrasonic heat sealing device is improved, and when the gap distance between the heat sealing upper die 10 and the heat sealing lower die 9 is smaller than or equal to the set distance, the gap distance is switched to large driving force again, and the clamping heat sealing effect is guaranteed.
In some embodiments, a high strength high toughness semi-circular face lower die
In some embodiments, the relative position of the heat-sealing upper die 10 and the heat-sealing lower die 9 may be that the heat-sealing lower die 9 is arranged above, in other embodiments, the heat-sealing upper die 10 may be arranged left and right, and the heat-sealing upper die 10 is not necessarily arranged vertically above according to practical needs.
In some embodiments, the driving mechanism comprises two opposite clamping cylinders 6, the driving of the cylinders is adopted, the integrated control is convenient, the corresponding electric control module comprises a controller, an air source 13, a first controlled valve 14 and a pressure reducing valve 2, the output end of the air source 13 is connected to the two opposite clamping cylinders 6 through the first controlled valve 14 and the pressure reducing valve 2 in sequence, and the first controlled valve 14 is connected with the controller. In some of these embodiments, the first controlled valve 14 is a two-position five-way solenoid valve. When the magnetic switch 12 output is at a low level, the output terminal of the first controlled valve connected to the opposite-clamping cylinder 6 is closed, and the output terminal connected to the pressure reducing valve 2 is turned on, thereby realizing a small driving force, whereas when the magnetic switch 12 output is at a high level, the output terminal of the first controlled valve connected to the opposite-clamping cylinder 6 is turned on, and the output terminal connected to the pressure reducing valve 2 is turned off, thereby realizing a large driving force.
In some embodiments, the device further comprises a lifting mechanism for adjusting the heights of the upper heat sealing die 10 and the lower heat sealing die 9, the lifting mechanism is connected with the upper heat sealing die 10, so that the heat sealing component can be lowered to the position where the valve port of the valve pocket is located when working, and can be lifted and retracted to a safe position to avoid the bag clamping gripper after heat sealing is finished, in some embodiments, the lifting mechanism is a lifting cylinder, and the corresponding electric control module comprises a controller, an air source 13 and a second controlled valve 16, wherein the output end of the air source 13 is connected to the lifting cylinder through the second controlled valve 16, and the second controlled valve 16 is connected with the controller, and in one embodiment, the second controlled valve 16 is a two-position five-way electromagnetic valve.
In some embodiments, the set distance is 4 millimeters, which can increase efficiency while ensuring safety.
In some embodiments the whole device is mounted on a packaging machine or other equipment by a mount 1, the mount 1 taking the form of a beam as shown, although in other embodiments other forms may be used.
In some embodiments, the device further comprises a lifting mechanism for adjusting the heights of the upper heat sealing die 10 and the lower heat sealing die 9, but the lifting mechanism is realized by adopting a motor to drive a gear rack mechanism or a ball screw mechanism, and similarly, the driving can also be realized by adopting the motor to drive the gear rack mechanism or the ball screw mechanism.
In one embodiment, a lifting mechanism is included and driven by a cylinder, an electrical schematic diagram is shown in fig. 6, after powder filling is completed, the valve bag 8 is moved to a heat sealing position as shown in fig. 3, a butt clamping mechanism consisting of a heat sealing upper die 10 and a heat sealing lower die 9 is opened, and then the lifting mechanism works to move the heat sealing port to the bag opening as shown in fig. 4. Then, as shown in fig. 5, the butt-clamping mechanism is closed, the air pressure of the butt-clamping air cylinder 6 in the process is the air pressure regulated by the pressure reducing valve 2, which is approximately equal to 0.05MPa, and the driving force of the air cylinder is approximately 50N, so that the butt-clamping mechanism does not hurt people even if clamped to fingers. If foreign matter is clamped between the upper and lower dies, the cylinder is not retracted to the safe position, the magnetic switch 10 is not sensed, and the clamping and heat sealing actions are stopped. When the distance between the upper and lower heat-sealing dies 10 and 9 is less than or equal to 4mm, the system judges that the safety position is reached, the air pressure of the driving air cylinder is switched to atmospheric pressure, about 0.6MPa, and after the upper and lower dies are in place, the ultrasonic generator 5 works to make the PE layer material clamped between the upper and lower dies melt due to heat generation caused by high-frequency vibration, so that the PE layer material is firmly bonded together. The front end of the heat sealing clamping opening is provided with a dust removing nozzle 11 which is opposite to the bag opening, and the dust removing nozzle 11 is connected in a dust collector pipeline, so that fine powder flying out from the bag opening during clamping opening can be effectively removed.
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110171653.6A CN112810161B (en) | 2021-02-08 | 2021-02-08 | Automatic ultrasonic heat sealing device and packaging machine for preventing finger pinching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110171653.6A CN112810161B (en) | 2021-02-08 | 2021-02-08 | Automatic ultrasonic heat sealing device and packaging machine for preventing finger pinching |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112810161A CN112810161A (en) | 2021-05-18 |
| CN112810161B true CN112810161B (en) | 2025-08-08 |
Family
ID=75863752
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110171653.6A Active CN112810161B (en) | 2021-02-08 | 2021-02-08 | Automatic ultrasonic heat sealing device and packaging machine for preventing finger pinching |
Country Status (1)
| Country | Link |
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| CN (1) | CN112810161B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4280610A (en) * | 1979-08-27 | 1981-07-28 | Rockwell International Corporation | Adjustable squeeze point safety device |
| CN110103513A (en) * | 2019-05-29 | 2019-08-09 | 唐亚辉 | A kind of solid band device of container bag feed inlet and outlet |
| CN214872754U (en) * | 2021-02-08 | 2021-11-26 | 锐派包装技术（上海）有限公司 | Automatic ultrasonic heat sealing device capable of preventing hands from being clamped and packaging machine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206654256U (en) * | 2017-02-14 | 2017-11-21 | 法比奥百利怡机械设备（上海）有限公司 | For the ultrasonic sealing welder of minimal thickness polybag |
-
2021
- 2021-02-08 CN CN202110171653.6A patent/CN112810161B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4280610A (en) * | 1979-08-27 | 1981-07-28 | Rockwell International Corporation | Adjustable squeeze point safety device |
| CN110103513A (en) * | 2019-05-29 | 2019-08-09 | 唐亚辉 | A kind of solid band device of container bag feed inlet and outlet |
| CN214872754U (en) * | 2021-02-08 | 2021-11-26 | 锐派包装技术（上海）有限公司 | Automatic ultrasonic heat sealing device capable of preventing hands from being clamped and packaging machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112810161A (en) | 2021-05-18 |
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