CN112607133A - Method for thermal shrinkage packaging of battery - Google Patents
Method for thermal shrinkage packaging of battery Download PDFInfo
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- CN112607133A CN112607133A CN202011412647.7A CN202011412647A CN112607133A CN 112607133 A CN112607133 A CN 112607133A CN 202011412647 A CN202011412647 A CN 202011412647A CN 112607133 A CN112607133 A CN 112607133A
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- drying tunnel
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B53/00—Shrinking wrappers, containers, or container covers during or after packaging
- B65B53/02—Shrinking wrappers, containers, or container covers during or after packaging by heat
- B65B53/06—Shrinking wrappers, containers, or container covers during or after packaging by heat supplied by gases, e.g. hot-air jets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B53/00—Shrinking wrappers, containers, or container covers during or after packaging
- B65B53/02—Shrinking wrappers, containers, or container covers during or after packaging by heat
- B65B53/06—Shrinking wrappers, containers, or container covers during or after packaging by heat supplied by gases, e.g. hot-air jets
- B65B53/063—Tunnels
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Abstract
A method for battery thermal shrinkage packaging comprises a frame, a transmission structure and a thermal shrinkage drying tunnel, wherein the transmission structure and the thermal shrinkage drying tunnel are arranged on the frame; the heat shrinkage drying tunnel comprises a preheating drying tunnel, a main drying tunnel and a heat preservation drying tunnel which are sequentially connected, wherein the main drying tunnel comprises a heating cover, and an electric heater, fins, a heat shield plate, a radiation plate and a thermocouple of the main drying tunnel are fixedly arranged in the heating cover; the fin is fixedly arranged above the electric heater, the heat shield is fixedly arranged above the fin, the lower part of the radiation plate is provided with an installation opening, and the thermocouple of the main drying channel is fixedly arranged on the inner wall of the heating cover. The preheating drying tunnel comprises a preheating drying tunnel thermocouple fixedly arranged on the inner wall of the bottom. The invention removes the fan, the air duct, the accessories thereof and the air outlet of the drying tunnel, completes the heating of the packaged piece by using the radiation and natural convection modes, saves the energy loss caused by the heat flow rate, and is beneficial to cost reduction, energy conservation and emission reduction.
Description
Technical Field
The invention relates to the field of thermal shrinkage packaging, in particular to a method for thermal shrinkage packaging of a battery.
Background
The heat-shrinkable packaging device has the main functions of performing heat-shrinkable film packaging operation on products such as batteries, toys, electric appliances, stationery, hardware tools, daily necessities and the like, wrapping the products or the packaging parts with a heat-shrinkable film, heating the products or the packaging parts to tightly wrap the products or the packaging parts with the heat-shrinkable film, so that the heat-shrinkable packaging device is convenient to carry, can fully display the appearance of the products, improves the marketability of the products, and increases the attractiveness and the value feeling, and therefore, the heat-shrinkable packaging device is very wide in application.
The structure and the manufacturing process of the existing battery heat shrinking device are complex, the function of enabling the heat-shrinkable plastic film to be heated and shrunk can be completed by means of common matching of various structures such as a fan, an air channel and the like, the manufacturing requirement and the manufacturing cost are high, air flow can be brought by the use of the fan, certain energy loss can be caused, the method for packaging the battery by heat shrinkage is improved, the structure of the device is simplified, the efficiency and the quality of the heat-shrinkable packaging are improved, the manufacturing and using cost is reduced, and the direction of further improvement is formed.
Disclosure of Invention
The invention aims to solve the technical problem in the prior art and provides a method for heating the thermal shrinkage packaging plastic of the battery by utilizing radiation and natural convection.
The technical scheme adopted by the invention for solving the technical problems is as follows: a battery thermal shrinkage packaging device comprises a rack, a transmission structure, a thermal shrinkage drying tunnel and a control monitoring system, wherein the transmission structure and the thermal shrinkage drying tunnel are arranged on the rack;
the heat shrinkage drying tunnel comprises a preheating drying tunnel, a main drying tunnel and a heat preservation drying tunnel which are sequentially connected, the main drying tunnel is one section or multiple sections, the main drying tunnel comprises a heating cover, an electric heater, a fin, a heat shield plate, a radiation plate and a main drying tunnel thermocouple are fixedly arranged in the heating cover, the electric heater comprises a main heater and an auxiliary heater, the fin is fixedly arranged above the electric heater, the heat shield plate is fixedly arranged above the fin, the radiation plate is of a columnar thin-wall structure, a mounting opening matched with the electric heater is formed in the lower portion of the radiation plate, and the main drying tunnel thermocouple is fixedly arranged on the inner wall of the heating cover;
the preheating drying tunnel thermocouple is fixedly arranged on the inner wall of the middle position of the bottom of the preheating drying tunnel, and the heat preservation drying tunnel thermocouple is fixedly arranged on the inner wall of the middle position of the bottom of the heat preservation drying tunnel.
A clamping groove is formed in the position of an inlet and an outlet of the main drying tunnel, the preheating drying tunnel and the heat preservation drying tunnel are connected with the main drying tunnel through the clamping groove, and the preheating drying tunnel and the heat preservation drying tunnel respectively comprise door curtains;
the transmission structure and the thermal contraction drying tunnel are electrically connected with a control monitoring system, the control monitoring system comprises a temperature controller, a speed regulator, an alarm and a plurality of switches, and the switches comprise a heating starting button, a heating stopping button and a main switch.
A control method using the battery heat-shrinkable packaging device comprises the following steps:
step 1: pressing the button to start heating, simultaneously electrifying the electric heater and the temperature controller, and setting the preset temperature of the heat-shrinkable main drying tunnel on the temperature controller.
Step 2: the speed governor switch is pressed down, and the motor is adjusted to a set rotation speed according to the specification of the packaged battery.
And step 3: the auxiliary heater is used for shortening the temperature rise time of the drying tunnel when the machine is started, the temperature interval suitable for heat-shrinkable packaging is set as [ t1, t2], when the temperature controller detects that the temperature of the heat-shrinkable main drying tunnel reaches t1, the control monitoring system controls the auxiliary heater to stop heating, the main heater starts to be used for drying tunnel temperature control, and the temperature is controlled in the temperature interval suitable for finishing heat-shrinkable packaging [ t1, t2 ].
And 4, step 4: due to the thermal inertia of the heaters and the difference between the external ambient temperature, when the main heater performs the temperature control of the drying tunnel, the heating is not necessarily started only after the temperature is reduced to t1 or stopped after the temperature is increased to t 2. If the temperature values measured by the thermocouple of the preheating drying tunnel and the thermocouple of the heat preservation drying tunnel are t32 and t34 respectively. In order to avoid frequent starting and stopping of the heater, the actual temperature control requirement in the thermal shrinkage process is considered, and meanwhile, in order to reduce the influence of the external environment temperature and the thermal inertia of the heater on the temperature control of the drying tunnel, the method for controlling the temperature of the drying tunnel is as follows: when the temperature value measured by the thermocouple of the main drying channel is less than t1+ (2t1-t32-t34)/t2, the main heater starts to heat; when the temperature value measured by the thermocouple of the main drying channel is more than t2- (t32+ t34)/t1, the heating of the main heater is stopped.
And 5: the automatic feeding device puts the to-be-packaged piece sleeved with the plastic film on a metal mesh belt in front of an inlet of a preheating drying tunnel at a set speed, after the to-be-packaged piece enters the preheating drying tunnel, a product-in-process quantity detector at the preheating drying tunnel automatically records the quantity of the to-be-packaged piece, the metal mesh belt drives the to-be-packaged piece to sequentially pass through the preheating drying tunnel, a main drying tunnel and a heat preservation drying tunnel to finish heat shrinkage work, and a product-in-process quantity detector at the heat preservation drying tunnel also automatically records the quantity of the packaged piece.
Step 6: if the number of the batteries recorded by the second detector at the heat preservation drying tunnel is not consistent with the number of the batteries recorded by the first detector at the preheating drying tunnel at that time within preset time, the control monitoring system immediately starts the heating stop switch and transmits an early warning signal to the alarm, and the alarm flickers a red light and gives out a sound alarm to prevent the batteries from being blocked in the drying tunnel to cause accidents.
Furthermore, the battery thermal shrinkage packaging device comprises a small chain wheel, a chain, a big chain wheel, a driving shaft, a driving wheel, a first driven shaft, a first driven wheel, a second driven shaft, a second driven wheel and a metal mesh belt, the motor is arranged on the frame, a small chain wheel is fixedly sleeved on a power output shaft of the motor, the small chain wheel and the large chain wheel are in meshed transmission through a chain, the two ends of the driving shaft are arranged on the frame, the big chain wheel and the driving wheel are fixedly sleeved on the driving shaft, the first driven wheel is fixedly sleeved on the first driven shaft, the second driven wheel is fixedly sleeved on the second driven shaft, the first driven shaft and the second driven shaft are fixedly arranged on the upper portion of the rack, the first driven shaft and the second driven shaft are respectively located on two sides of the heat shrinkage drying tunnel, and the driving wheel, the first driven wheel and the second driven wheel are driven through a metal mesh belt.
Furthermore, the heat-shrinkable drying tunnel comprises a top cover and a bottom cover which can be closed up and down, the top cover and the bottom cover are both fixedly installed on the frame, a positioning spring is arranged at the bottom of the heating cover, and an ejector rod matched with the positioning spring is arranged on the bottom cover.
Furthermore, detectors for recording the number of packaged pieces entering and exiting the drying tunnel are installed at the inlet of the preheating drying tunnel and the outlet of the heat preservation drying tunnel, the preheating drying tunnel and the heat preservation drying tunnel further comprise safety protective guards, and door curtains are respectively arranged on the preheating drying tunnel and the heat preservation drying tunnel.
Furthermore, thermocouples for measuring temperature are respectively arranged in the middle of the preheating drying channel and the middle of the heat preservation drying channel.
Furthermore, heat preservation cotton is arranged between the radiation plate and the inner wall of the heating cover.
Further, handles are arranged on two sides of the heating cover.
Furthermore, the bottom of the motor is provided with an adjusting nut, a first positioning groove matched with the adjusting nut is formed in the rack, two ends of the driving shaft are installed on the positioning plate of the rack, a second positioning groove matched with the end part of the driving shaft is formed in the positioning plate, and a third positioning groove is formed in two ends of the positioning plate.
Compared with the prior art, the battery thermal shrinkage packaging device can be used for thermal shrinkage packaging of batteries and other packaging pieces, and has the following beneficial effects:
1. the drying tunnel is different from the traditional heat shrinkage drying tunnel with a fan, and structurally, the fan, the special fan blades, the air duct and the drying tunnel air outlet are eliminated, meanwhile, the combination of holes required by forced convection of the drying tunnel is simplified, the product structure is greatly simplified, the manufacturing cost is obviously reduced, and the product volume and the weight are reduced. On the working principle, the heating and thermal shrinkage of the packaged piece are completed by utilizing the radiation and natural convection modes, so that the energy loss caused by the heat flow rate is saved, and the use cost is saved.
2. Two auxiliary drying tunnels, namely a preheating drying tunnel and a heat preservation drying tunnel, are arranged at the inlet and the outlet of the main drying tunnel, so that the heat dissipated at the inlet and the outlet of the main drying tunnel can be greatly reduced, and the temperature difference between the main drying tunnel and the external environment is reduced; the door curtain structure of the entrance can lock more hot air and reduce heat leakage. After the drying tunnel reaches the preset temperature, the heat loss of natural convection in the drying tunnel is weaker than that of forced convection due to the structures of the preheating drying tunnel and the heat preservation drying tunnel and the action of the inlet and outlet door curtains, so that the three-section type heat shrinkage drying tunnel has higher heat preservation performance, and the heat preservation time of the drying tunnel is prolonged.
3. The main drying tunnel is internally provided with a main electric heater and an auxiliary electric heater, and the auxiliary electric heater is used for shortening the temperature rise time of the drying tunnel when the drying tunnel is started. In the temperature rising process, the two heaters are started simultaneously, and the temperature rising speed of the drying tunnel is ensured. After the preset temperature is reached, the stable working state is achieved, the auxiliary heater is turned off, and only the main heater is started, so that the energy can be saved, and the temperature stability in the drying tunnel is improved.
4. The fin and the heat shielding plate structure are designed, and the positions of the fin and the heat shielding plate structure in the drying tunnel are adjusted, so that the temperature of the drying tunnel can be controlled to be reasonably distributed, and the temperature field of the drying tunnel is controlled to be in a state suitable for realizing heat shrinkage packaging under a natural convection environment, so that the heat shrinkage process requirement is met.
5. If the temperature interval suitable for thermal shrinkage packaging is [ t1, t2], the temperature values measured by the thermocouple of the preheating drying tunnel and the thermocouple of the heat preservation drying tunnel are t32 and t34 respectively, in order to avoid frequent starting and stopping of the heater, the actual control requirement of the thermal shrinkage process on the temperature is considered, and meanwhile, in order to reduce the influence of the external environment temperature and the thermal inertia of the heater on the temperature control of the drying tunnel, the following method for controlling the temperature of the drying tunnel is adopted: when the temperature value measured by the thermocouple of the main drying channel is less than t1+ (2t1-t32-t34)/t2, the main heater starts to heat; when the temperature value measured by the thermocouple of the main drying channel is more than t2- (t32+ t34)/t1, the heating of the main heater is stopped.
6. Safety guard rails are arranged on two sides of a metal mesh belt in the whole drying tunnel between the preheating drying tunnel and the heat preservation drying tunnel, so that packaged pieces can normally enter and exit the drying tunnel, and accidents are prevented.
Drawings
Fig. 1 is an exploded view of the battery shrink wrap device of the present invention.
Fig. 2 is an exploded view of the heat-shrinkable drying tunnel of the present invention.
Fig. 3 is a cross-sectional view of a heat-shrinkable drying tunnel according to the present invention.
Fig. 4 is a perspective view of the transmission structure of the present invention.
Fig. 5 is a perspective view of the heating mantle of the present invention.
FIG. 6 is a perspective view of the heat-insulating drying tunnel of the present invention.
FIG. 7 is a schematic view of a plurality of main drying tunnels according to the present invention connected in series.
Reference numerals: 1. a frame; 11. a first positioning groove; 12. positioning a plate; 121. a second positioning groove; 13. a third positioning groove; 2. a transmission structure; 21. a motor; 2101. adjusting the screw cap; 22. a small sprocket; 23. a chain; 24. a large sprocket; 25. a drive shaft; 26. a driving wheel; 27. a first driven shaft; 28. a first driven wheel; 29. a second driven shaft; 210. a second driven wheel; 211. a metal mesh belt; 3. a heat-shrinkable drying tunnel; 31. a heat-shrinkable main drying tunnel; 32. preheating a drying tunnel; 33. a main drying tunnel; 331. a heating mantle; 3311. a handle; 3312. a positioning spring; 3313. a card slot; 332. an electric heater; 3321. a main heater; 3322. a sub-heater; 333. a fin; 334. a heat shield; 335. a radiation plate; 3351. an installation opening; 336. a thermocouple of the main drying tunnel; 34. a heat preservation drying tunnel; 341. an exit curtain; 35. a top cover; 36. a bottom cover; 361. a top rod; 4. controlling the monitoring system; 41. a temperature controller; 42. a speed regulator; 43. an alarm; 44. a start heating button; 45. stop heating the button; 46. a master switch;
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
As shown in fig. 1 to 7, a method for battery thermal shrinkage packaging requires the use of a battery thermal shrinkage device, the battery thermal shrinkage device includes a frame 1, a transmission structure 2, a thermal shrinkage drying tunnel 3 and a control monitoring system 4, the transmission structure 2 and the thermal shrinkage drying tunnel 3 are installed on the frame 1, the transmission structure 2 includes a metal mesh belt 211, the thermal shrinkage drying tunnel 3 includes a hollow thermal shrinkage main drying tunnel 31, the metal mesh belt 211 passes through the thermal shrinkage main drying tunnel 31 of the thermal shrinkage drying tunnel 3 and is used for transporting a to-be-packaged piece, and the control monitoring system 4 is used for controlling the start and stop of the transmission structure 2 and the thermal shrinkage drying tunnel 3 and monitoring whether the operation is normal or not.
In the packaging process, heat is transferred to packaged parts, the heat shrinkage drying tunnel 3 is mainly used, the heat shrinkage drying tunnel 3 comprises a preheating drying tunnel 32, a main drying tunnel 33 and a heat preservation drying tunnel 34 which are sequentially connected, the main drying tunnel 33 is in one section or multiple sections, the preheating drying tunnel 32 and the heat preservation drying tunnel 34 are respectively installed on the front side and the rear side of the main drying tunnel 33, related devices of the preheating drying tunnel 32 and the heat preservation drying tunnel 34 play roles in product quantity detection and the like, and original measurement data of the drying tunnel in-product jamming emergency treatment and alarm are provided for a control monitoring system.
The main drying tunnel 33 comprises a heating cover 331, and an electric heater 332, fins 333, a heat shield 334, a radiation plate 335 and a main drying tunnel thermocouple 336 are fixedly arranged in the heating cover 331.
The electric heater 332 is arranged at a lower position inside the heating cover 331, in the embodiment, the electric heater 332 comprises a main heater 3321 and an auxiliary heater 3322 which are arranged in parallel, when the temperature is raised, the main heater 3321 and the auxiliary heater 3322 are simultaneously started, so that the temperature raising speed of the drying tunnel is ensured; when the temperature is kept, only the main heater 3321 is started to ensure the stable heating of the drying tunnel.
The fin 333 is fixed above the electric heater 332, and the heat shield 334 is fixed above the fin 333, wherein the heat shield 334 is an arc-shaped plate. The fins 333 are placed on the electric heater 332 to slow down the natural convection flow rate below the electric heater 332 on the one hand, and to increase the air temperature below the heat-shrinkable primary drying tunnel 31 by drawing the distance between the electric heater 332 and the heat shield 334 below on the other hand.
The heat shield 334 is used for transferring heat into the heat-shrinkable primary drying tunnel 31, and due to the existence of natural convection, the temperature difference between the top and the bottom of the heat-shrinkable primary drying tunnel 31 is large, the convection flow rate is high, and the air just heated below the heat-shrinkable primary drying tunnel 31 rapidly flows to the top of the heat-shrinkable primary drying tunnel 31.
The radiation plate 335 is a columnar thin-wall structure, the lower part of the radiation plate 335 is provided with an installation opening 3351 matched with the electric heater 332, the main drying tunnel 33 has a larger space and has a stronger energy storage advantage, the radiation plate 335 is installed at the position 2-3mm away from the outer surface of the heating element, and the radiation plate 335 has the function of reflecting heat to keep the temperature of the drying tunnel.
A main drying tunnel thermocouple 336 is fixedly arranged on the inner wall of a heating cover 331, a preheating drying tunnel thermocouple is fixedly arranged at the middle position of the inner wall of the bottom of a preheating drying tunnel 32, a heat preservation drying tunnel thermocouple is fixedly arranged at the middle position of the inner wall of the bottom of a heat preservation drying tunnel 34, the main drying tunnel thermocouple 336, the preheating drying tunnel thermocouple and the heat preservation drying tunnel thermocouple are electrically connected with a control monitoring system 4, the main drying tunnel thermocouple 336, the preheating drying tunnel thermocouple and the heat preservation drying tunnel thermocouple collect the temperature in the drying tunnel, the temperature interval suitable for heat shrinkage packaging is set as t1, t2, the temperature values measured by the preheating drying tunnel thermocouple and the heat preservation drying tunnel thermocouple are t32 and t34 respectively, and when the temperature value measured by the main drying tunnel thermocouple is less than t1+ (2t1-t32-t34)/t2, the main heater 3321 starts to heat; when the temperature value measured by the thermocouple of the main drying channel is more than t2- (t32+ t34)/t1, the main heater 3321 stops heating.
In addition, heat insulation cotton is arranged between the radiation plate 335 and the inner wall of the heating cover 331; handles 3311 are provided on both sides of the heating cover 331 to facilitate the manufacturer to detach the drying tunnel and replace the electric heater 332 inside.
The heat-shrinkable drying tunnel 3 further comprises a top cover 35 and a bottom cover 36 which can be covered up and down, the lower part of the top cover 35 and the upper part of the bottom cover 36 are both fixedly arranged on the frame 1, a positioning spring 3312 is arranged at the bottom of the heating cover 331, a top rod 361 matched with the positioning spring 3312 is arranged on the bottom cover 36, the diameter of the top rod 361 is slightly smaller than the inner diameter of the positioning spring 3312, and the positioning spring 3312 and the top rod 361 are arranged to facilitate the positioning, fixing, assembling and disassembling of the main drying tunnel 33 and the bottom cover 36.
When the device is installed, the positioning spring 3312 and the push rod 361 are matched with each other to play a positioning role. In a normal working state, the positioning spring 3312 contacts the bottom cover 36 to support the whole heat-shrinkable drying tunnel 3 in a stable working state. The top cover 35 and the bottom cover 36 can not only isolate the drying tunnel from directly conducting heat transfer with the external environment, but also shield the drying tunnel from external dust, thereby avoiding the drying tunnel from being polluted.
The inlet and outlet positions of the main drying tunnel 33 are provided with clamping grooves 3313, the preheating drying tunnel 32 and the heat-insulating drying tunnel 34 are connected with the main drying tunnel 33 through the clamping grooves 3313, the middle part of the preheating drying tunnel 32 is provided with a preheating drying tunnel thermocouple, the middle part of the heat-insulating drying tunnel 34 is provided with a heat-insulating drying tunnel thermocouple, and the preheating drying tunnel thermocouple and the heat-insulating drying tunnel thermocouple are electrically connected with the control monitoring system 4 through different input ports and are used for detecting the temperatures of the set positions of the preheating drying tunnel 32 and the heat-insulating drying tunnel 34 so as to better realize the control of the temperature of the heat.
The inlet of the preheating drying tunnel 32 and the outlet of the heat preservation drying tunnel 34 are respectively provided with a first detector and a second detector for detecting the number of articles, the first detector and the second detector are electrically connected with the control and monitoring system 4 through different input ports, the first detector and the second detector are used for recording the number of packaged articles entering and exiting the drying tunnel within a set time, so as to prevent the packaged articles from being blocked in the drying tunnel, and accidents or production loss are caused because no people perceive the packaged articles, the preheating drying tunnel 32 and the heat preservation drying tunnel 34 further comprise safety guard rails, the safety guard rails can help the packaged articles to enter and exit the drying tunnel in a correct placing state, and the situation that the packaged articles are too close to the electric heater 332 to cause danger can also be avoided.
In addition, an inlet door curtain which is inwards opened is arranged at the inlet of the preheating drying channel 32, and an outlet door curtain 341 which is outwards opened is also arranged at the outlet of the heat preservation drying channel 34, so that the heat loss of the drying channel is reduced.
The transmission structure 2 comprises a motor 21, a small chain wheel 22, a chain 23, a large chain wheel 24, a driving shaft 25, a driving wheel 26, a first driven shaft 27, a first driven wheel 28, a second driven shaft 29, a second driven wheel 210 and a metal mesh belt 211, wherein the motor 21 is arranged on the frame 1, the small chain wheel 22 is fixedly sleeved on a power output shaft of the motor 21, the small chain wheel 22 and the large chain wheel 24 are in meshing transmission through the chain 23, two ends of the driving shaft 25 are arranged on the frame 1, the large chain wheel 24 and the driving wheel 26 are fixedly sleeved on the driving shaft 25, the first driven wheel 28 is fixedly sleeved on the first driven shaft 27, the second driven wheel 210 is fixedly sleeved on the second driven shaft 29, the first driven shaft 27 and the second driven shaft 29 are fixedly arranged on the upper part of the frame 1, the first driven shaft 27 and the second driven shaft 29 are respectively arranged on two sides of the heat shrinkage drying tunnel 3, the driving wheel 26, the first driven, the package is transported by the metal mesh belt 211 and passes through the preheating drying tunnel 32, the main drying tunnel 33 and the heat preservation drying tunnel 34 in sequence, and the heat shrinkage packaging process is completed.
In addition, the bottom of the motor 21 is provided with an adjusting nut 2101, the frame 1 is provided with a first positioning groove 11 matched with the adjusting nut 2101, two ends of the driving shaft 25 are installed on a positioning plate 12 of the frame 1, the positioning plate 12 is provided with a second positioning groove 121 matched with the end of the driving shaft 25, and the frame 1 and two ends of the positioning plate 12 are provided with third positioning grooves 13.
The transmission process is as follows: the motor 21 drives the small chain wheel 22 to rotate, the small chain wheel 22 transmits the motion to the large chain wheel 24 through the chain 23, and the large chain wheel 24 and the driving wheel 26 are sleeved on the driving shaft 25 together and are connected together through bolts. The metal mesh belt 211 is driven by the driving shaft 25 to move by the friction of the driving wheel 26, the metal mesh belt 211 passes through the first driven wheel 28 and the second driven wheel 210 to drive the metal mesh belt 211 to synchronously rotate, and finally, a plastic film wrapped on a packaged piece such as a battery or sewing thread to be heated passes through the heat shrinkage drying tunnel 3 to finish the heat shrinkage packaging work.
The multi-section heat-shrinkable drying tunnel 3 is formed by adding a main drying tunnel 33 on the basis of a single-section heat-shrinkable drying tunnel 3. The main drying tunnels 33 can be connected in series by using hinges, namely, the main drying tunnels 33 are fixedly connected by the hinges, and each main drying tunnel 33 is provided with an independent temperature regulating system so as to be suitable for different requirements of different packaged pieces on the heating process. The customer can connect in series a plurality of heat-saving shrinkage drying tunnels 3 according to the actual demand.
The control and monitoring system 4 comprises a temperature controller 41, a speed regulator 42, an alarm 43 and three switches, namely a heating start button 44, a heating stop button 45 and a main switch 46, wherein the main switch 46 can control the on-off of the whole device.
The working principle of the battery thermal shrinkage packaging device is as follows: the conveyor belt feeds the packaged articles, such as batteries or sewing threads, wrapped with plastic film, from the preheating drying tunnel 32, through the main drying tunnel 33, and out of the heat-insulating drying tunnel 34. The high temperature in the drying tunnel is utilized to heat the plastic film outside the product, and the plastic film is heated to shrink and tightly wrap the packaged piece, so that the packaging operation of the packaging machine is realized.
The temperature controller 41 can measure the temperature of the drying tunnel, if the temperature exceeds the preset drying tunnel temperature, the control monitoring system 4 controls the main heater 3321 to continue heating, the auxiliary heater 3322 stops heating, the speed regulator 42 can control the rotating speed of the motor 21 to a set value according to the specification of the packaged battery, and the speed of the metal mesh belt 211 can be regulated through the transmission of the transmission structure 2.
When the operation is started, the heating start button 44 is pressed, the electric heater 332 is powered on, and the drying tunnel starts to heat and raise the temperature. Meanwhile, the temperature controller 41 is powered on to operate, and after the temperature controller 41 sets a predetermined drying tunnel temperature, the temperature controller 41 starts temperature control. Next, the governor 42 switch is pressed to adjust the motor 21 to a preset rotational speed according to the specifications of the packaged battery. After the drying tunnel temperature reaches the preset drying tunnel temperature, the packaged piece is put on the metal mesh belt 211. The first detector at the inlet registers the number of packaged items as they pass through the preheat tunnel 32. The packaged pieces pass through the main drying channel 33 to finish the heat shrinkage work, the packaged pieces are identified by the second detector at the outlet of the heat preservation drying channel 34, if the number of the packaged pieces recorded by the first detector and the second detector in the same set time is equal, one-time packaging is finished, if the number of the packaged pieces recorded by the preheating drying channel detector and the heat preservation drying channel detector in the same set time is not equal, the control monitoring system 4 immediately sends out a drying channel heating stop signal, the power supply of the main heater 3321 and the auxiliary heater 3322 is cut off, the heating of the drying channel is stopped, an early warning signal is transmitted to the alarm 43, and at the moment, the alarm 43 flashes a red light and sends out an alarm.
Specifically, the control method using the battery heat shrinking device comprises the following control steps:
step 1: the start heating button 44 is pressed, the electric heater 332 and the thermostat 41 are simultaneously energized, and a predetermined temperature interval [ t1, t2] of the heat-shrinkable main drying tunnel 31 is set on the thermostat 41.
Step 2: the governor 42 switch is pressed to adjust the motor 21 to a set speed according to the specifications of the packaged battery.
And step 3: the auxiliary heater is used for shortening the temperature rise time of the drying tunnel when the machine is started, if the temperature interval suitable for heat-shrinkable packaging is [ t1, t2], when the temperature controller detects that the temperature of the heat-shrinkable main drying tunnel reaches t1, the control monitoring system controls the auxiliary heater to stop heating, the main heater starts to be used for drying tunnel temperature control, and the temperature is controlled in the temperature interval suitable for finishing heat-shrinkable packaging [ t1, t2 ].
And 4, step 4: due to the difference between the thermal inertia of the heater and the external ambient temperature, when the main heater performs the temperature control of the drying tunnel, the heating is not necessarily started only after the temperature is decreased to t1 or stopped after the temperature is increased to t 2. If the temperature values measured by the thermocouple of the preheating drying tunnel and the thermocouple of the heat preservation drying tunnel are t32 and t34 respectively. In order to avoid frequent starting and stopping of the heater, the actual temperature control requirement in the thermal shrinkage process is considered, and meanwhile, in order to reduce the influence of the external environment temperature and the thermal inertia of the heater on the temperature control of the drying tunnel, the method for controlling the temperature of the drying tunnel is as follows: when the temperature value measured by the thermocouple of the main drying channel is less than t1+ (2t1-t32-t34)/t2, the main heater starts to heat; when the temperature value measured by the thermocouple of the main drying channel is more than t2- (t32+ t34)/t1, the heating of the main heater is stopped.
And 5: the material feeding device puts the to-be-packaged piece sleeved with the plastic film on a metal mesh belt 211 at the preheating drying channel 32 at a set speed, the first detector at the preheating drying channel 32 automatically records, the metal mesh belt 211 drives the to-be-packaged piece to sequentially pass through the preheating drying channel 32, the main drying channel 33 and the heat preservation drying channel 34 to finish the heat shrinkage work, and the second detector at the heat preservation drying channel 34 automatically records. Normally, the number of batteries recorded by detector 371 and detector 372 at the same time should be equal.
Step 6: if the numbers of the packaged parts recorded by the first detector and the second detector in the same set time are not equal, the control monitoring system 4 immediately sends out a drying tunnel heating stop signal, cuts off the power supply of the main heater 3321 and the auxiliary heater 3322, stops heating the drying tunnel, sends an early warning signal to the alarm 43, and at the moment, the alarm 43 flashes a red light and gives out an alarm.
The battery thermal shrinkage packaging device can be used for thermal shrinkage packaging of batteries and can also be used for thermal shrinkage packaging of other packages capable of bearing about 165 ℃. When the packaging machine is used, the surface of a packaged piece such as a battery is coated with a plastic film manually or by using other automatic devices, then the packaged piece is placed at an inlet of a preheating drying channel, and the packaged piece passes through the preheating drying channel, a main drying channel and a heat-preservation drying channel in sequence under the drive of a metal mesh belt to finish heat-shrinkable packaging.
Finally, it should be noted that: in the above description, all directional descriptions related to up, down, left, right, front and back are taken as the position state of fig. 1, and do not limit the technical solution of the present invention. Moreover, the above embodiments are merely illustrative of the technical solutions of the present invention, and not restrictive; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. The utility model provides a battery pyrocondensation packing plant which characterized in that: the battery thermal shrinkage packaging device comprises a rack (1), a transmission structure (2), a thermal shrinkage drying tunnel (3) and a control monitoring system (4), wherein the transmission structure (2) and the thermal shrinkage drying tunnel (3) are installed on the rack (1), the transmission structure (2) comprises a motor (21) and a metal mesh belt (211) used for conveying a to-be-packaged piece, the thermal shrinkage drying tunnel (3) comprises a hollow thermal shrinkage main drying tunnel (31), and the metal mesh belt (211) penetrates through the thermal shrinkage main drying tunnel (31) of the thermal shrinkage drying tunnel (3);
the heat shrinkage drying tunnel (3) comprises a preheating drying tunnel (32), a main drying tunnel (33) and a heat preservation drying tunnel (34) which are sequentially connected, wherein the main drying tunnel (33) is one section or a plurality of sections, the main drying tunnel (33) comprises a heating cover (331), an electric heater (332), a fin (333), a heat shield (334), a radiation plate (335) and a main drying tunnel thermocouple (336) are fixedly arranged in the heating cover (331), the electric heater (332) comprises a main heater (3321) and an auxiliary heater (3322), the fin (333) is fixedly arranged above the electric heater (332), the heat shield (334) is fixedly arranged above the fin (333), the radiation plate (335) is of a cylindrical thin-wall structure, an installation opening (3351) matched with the electric heater (332) is formed in the lower part of the radiation plate (335), and the main drying tunnel thermocouple (336) is fixedly arranged on the inner wall of the heating cover (331), a preheating drying tunnel thermocouple is fixedly arranged in the middle of the inner wall of the bottom of the preheating drying tunnel (32), and a heat preservation drying tunnel thermocouple is fixedly arranged in the middle of the inner wall of the bottom of the heat preservation drying tunnel (34);
the transmission structure (2) and the thermal contraction drying tunnel (3) are electrically connected with the control monitoring system (4), the control monitoring system (4) comprises a temperature controller (41), a speed regulator (42), an alarm (43), a main drying tunnel thermocouple (336), a preheating drying tunnel thermocouple, a heat preservation drying tunnel thermocouple and a plurality of switches, and the switches comprise a heating starting button (44), a heating stopping button (45) and a main switch (46).
2. The battery thermal shrinkage packaging device according to claim 1, wherein the transmission structure (2) further comprises a small chain wheel (22), a chain (23), a large chain wheel (24), a driving shaft (25), a driving wheel (26), a first driven shaft (27), a first driven wheel (28), a second driven shaft (29), a second driven wheel (210) and a metal mesh belt (211), the motor (21) is mounted on the frame (1), the small chain wheel (22) is fixedly sleeved on a power output shaft of the motor (21), the small chain wheel (22) and the large chain wheel (24) are in meshing transmission through the chain (23), two ends of the driving shaft (25) are mounted on the frame (1), the large chain wheel (24) and the driving wheel (26) are both fixedly sleeved on the driving shaft (25), and the first driven wheel (28) is fixedly sleeved on the first driven shaft (27), the second driven wheel (210) is fixedly sleeved on the second driven shaft (29), the first driven shaft (27) and the second driven shaft (29) are fixedly arranged on the upper portion of the rack (1), the first driven shaft (27) and the second driven shaft (29) are respectively arranged on two sides of the heat shrinkage drying tunnel (3), and the driving wheel (26), the first driven wheel (28) and the second driven wheel (210) are driven through the metal mesh belt (211).
3. The battery heat-shrinkable packaging device according to claim 1, wherein the heat-shrinkable drying tunnel (3) comprises a top cover (35) and a bottom cover (36) which can be covered up and down, the top cover (35) and the bottom cover (36) are both fixedly installed on the frame (1), a positioning spring (3312) is arranged at the bottom of the heating cover (331), and a top rod (361) matched with the positioning spring (3312) is arranged on the bottom cover (36).
4. The battery thermal shrinkage packaging device according to claim 1, wherein a clamping groove (3313) is arranged at an entrance and an exit of the main drying tunnel (33), the preheating drying tunnel (32) and the heat preservation drying tunnel (34) are connected with the main drying tunnel (33) through the clamping groove (3313), the preheating drying tunnel (32) comprises an entrance door curtain, and the heat preservation drying tunnel (34) comprises an exit door curtain (341).
5. The battery heat-shrinkable packaging device according to claim 1, characterized in that a first detector is installed at the inlet of the preheating drying tunnel (32), a second detector is installed at the outlet of the heat-preserving drying tunnel (34), the first detector and the second detector are used for recording the number of packaged items entering and exiting the drying tunnel, the preheating drying tunnel (32) and the heat-preserving drying tunnel (34) further comprise a safety guard fence, an inlet door curtain is further arranged on the preheating drying tunnel (32), and an outlet door curtain (341) is further arranged on the heat-preserving drying tunnel (34).
6. The battery heat-shrinkable packaging device according to claim 1, wherein heat-insulating cotton is arranged between the radiation plate (335) and the inner wall of the heating cover (331).
7. The battery shrink wrapping device according to claim 1, wherein handles (3311) are provided on both sides of the heating cover (331).
8. The battery thermal shrinkage packaging device according to claim 2, wherein an adjusting nut (2101) is arranged at the bottom of the motor (21), a first positioning groove (11) matched with the adjusting nut (2101) is formed in the frame (1), two ends of the driving shaft (25) are installed on a positioning plate (12) of the frame (1), a second positioning groove (121) matched with the end of the driving shaft (25) is formed in the positioning plate (12), and a third positioning groove (13) is formed in two ends of the positioning plate (12).
9. A method for battery shrink wrapping using the battery shrink wrapping apparatus of any one of claims 1-8, comprising the steps of:
step 1: pressing a heating start button, simultaneously electrifying the electric heater and the temperature controller, and setting a preset temperature interval of the heat-shrinkable main drying tunnel on the temperature controller as [ t1, t2 ];
step 2: pressing down a speed governor switch, and adjusting the motor to a set rotating speed according to the specification of the to-be-packaged piece;
and step 3: setting the temperature interval of the heat-shrinkable package as [ t1, t2], when the temperature controller detects that the temperature of the heat-shrinkable main drying tunnel reaches t1, controlling the monitoring system to control the auxiliary heater to stop heating, starting the main heater to be used for controlling the temperature of the drying tunnel, and controlling the temperature in the temperature interval suitable for finishing the heat-shrinkable package;
and 4, step 4: if the temperature values measured by the thermocouple of the preheating drying channel and the thermocouple of the heat preservation drying channel are t32 and t34 respectively, when the temperature value measured by the thermocouple of the main drying channel is less than t1+ (2t1-t32-t34)/t2, the main heater starts to heat; when the temperature value measured by the thermocouple of the main drying channel is greater than t2- (t32+ t34)/t1, the main heater stops heating;
and 5: the method comprises the steps of placing a to-be-packaged piece sleeved with a plastic film on a metal mesh belt at a preheating drying channel, automatically recording by a first detector at the preheating drying channel, driving the to-be-packaged piece to sequentially pass through the preheating drying channel, a main drying channel and a heat preservation drying channel by the metal mesh belt, completing heat shrinkage work, and automatically recording by a second detector at the heat preservation drying channel.
10. The method for battery shrink wrapping of claim 9, further comprising step 6 after step 5: if the numbers of the packaged parts recorded by the first detector and the second detector in the same set time are not equal, the control monitoring system immediately sends out a heating stopping signal of the drying tunnel, cuts off the power supply of the main heater and the auxiliary heater, stops heating the drying tunnel, sends an early warning signal to the alarm, and the alarm flashes a red light and gives an alarm.
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| CN202011412647.7A CN112607133A (en) | 2020-12-04 | 2020-12-04 | Method for thermal shrinkage packaging of battery |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011412647.7A CN112607133A (en) | 2020-12-04 | 2020-12-04 | Method for thermal shrinkage packaging of battery |
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Application publication date: 20210406 |