CN101486247A - Cooling and picking device and method for bottle blank - Google Patents

Abstract

A cooling and picking device for bottle blank comprises: a first picking mechanism capable of performing a reciprocating movement for picking each bottle blank molded in a mold of an injection molding machine from the mold; the second picking mechanism also carries out reciprocating movement and is used for picking up the bottle blanks on the first picking mechanism, and the second picking mechanism can sequentially unload the bottle blanks on the second picking mechanism in batches after picking up a preset number of bottle blanks; therefore, the injection molding process and the cooling process of the bottle blanks can be separated, and the time of each bottle blank on the second picking mechanism is controlled, so that each bottle blank can be cooled reliably.

Description

Cooling pick-up device for preform and cooling pick-up method thereof

technical field

The invention relates to a manufacturing process of a preform, in particular to a preform cooling and picking device and a cooling and picking method thereof.

technical background

In the past preform injection molding machine, when the mold is closed, a plurality of closed mold cavities are formed, and the plastic melt is injected into the mold cavities, so that the plastic melt fills the mold cavities, and after a predetermined period of static After the temperature is lowered to make the preform condense and shape, the mold will be opened and the preform will be ejected out of the mold cavity by an ejector device, and the entire preform manufacturing process will be completed.

However, in the above-mentioned conventional preform injection molding machine, in order to cool and shape the injected preform, so as to avoid damage to the preform shape due to the collision of the preforms when the mold is released from the mold, in manufacturing, the preform after injection When waiting to cool down in the mold, it is necessary to continue to stay for a cooling and setting time after a period of condensing and forming, so that the preform can be further fully shaped after forming. In this way, the preform is waiting in the mold A longer cooling time will relatively occupy the next injection molding time of the mold, thus causing the entire injection process to stagnate, resulting in a decrease in output.

At present, there is another kind of cooling device installed beside the preform injection molding machine on the market, as shown in Figure 30, it uses the mobile mold 1 to pick up the finished products of each preform 3 in the mold 2, and then puts the bottle The preforms 3 are transferred to a cooling position 4, and the cooling device 4 can be used to cool each preform 3, wherein the cooling device 4 is composed of a plurality of air nozzles 5, as shown in Figure 31, when the moving mold 1 picks up the bottle When the preform 3 arrives at the cooling position 4, the cooling device 4 will engage with the movable mold 1, and at this time, each air nozzle 5 will extend into the inside of each preform 3, and perform an air jet cooling action.

However, when this cooling device 4 is connected with the movable mold 1, and each preform 3 is sprayed and cooled with each air nozzle 5, because the air ejected from each air nozzle 5 circulates smoothly in each preform 3 inside, therefore, there is an airflow space 6 between each preform 3 and each air nozzle 5, and when the inside of each preform 3 is cooled by each air nozzle 5 for cooling, due to the air ejected by each air nozzle 5 The cooling air will scurry in each airflow space 6 and cause the cyclone phenomenon to be generated. In this way, the cooling effect of the inner wall edge of each preform 3 will be uneven, resulting in the deformation of the inner wall edge of each preform 3 . And affect the overall yield of each preform 3; in addition, due to this preform cooling method, the nozzle 5 is inserted into the inside of the preform 3, so it can only cool the inner edge of the preform 3, and It is impossible to obtain a good cooling effect on the bottleneck of the preform 3, so that each preform 3 is easily deformed at the bottleneck, which will affect the gas flow of the bottleneck of each preform 3 when it is screwed with the bottle cap. This is also one of its disadvantages.

Furthermore, the movable mold 1 has three different pick-up positions 1A, 1B, and 1C in the mold 2. As shown in FIG. The preform 3 is picked out of the mold 2, and then engaged with the cooling device 4 for cooling; then, the movable mold 1 enters the mold 2 again and moves to the second pick-up position 1B, as shown in FIG. 33 , and each The preform 3 is taken out from the mold 2 for cooling; after that, the movable mold 1 moves to the third pick-up position 1C (as shown in FIG. 34 ) to take the preform 3 out of the mold 2 for cooling. Before the moving mold 1 performs the action of picking up the preform, it will first perform an unloading action on the picking position of the preform 3 to be picked up in the moving mold 1, and continue to cycle according to this step, and the mold can be made The preform 3 molded in 2 must be cooled outside the mold 2.

However, the volume of the movable mold 1 and the cooling device 4 designed in this way of extraction will be quite large, and consume a lot of workshop space; There will also be preforms 3 that have been retrieved and not yet unloaded, so the load of the entire mobile mold 1 is very high, which will cause the speed of the mobile mold 1 to be very slow when picking up and moving, which will seriously affect to the efficiency when each preform 3 is retrieved.

Contents of the invention

The object of the present invention is to provide a preform cooling pick-up device and cooling pick-up method thereof, which can separate the preform injection molding process from the preform cooling process, so that the injection molding machine can continue to perform injection molding Operation without being interrupted, which can effectively improve the production efficiency of preforms.

Another object of the present invention is to provide a preform cooling pick-up device and its cooling pick-up method. When the first clamping part picks up the preforms, the first stage is carried out on the outer edge of each preform. Cooling action; and when the preforms on the second clamping part and the first clamping part are joined together, each preform will be subjected to the first clamping part and the second clamping part respectively. , the inner edge of the preform is cooled, and thereby provides the second stage of cooling action for the preform; then, the second clamping part carries the preform to the collecting position, and continues to perform the third stage of cooling on the inner edge of the preform Cooling, the present invention can provide each preform to perform multi-stage cooling action, so that the preforms can be cooled reliably, and then the yield rate of each preform can be effectively improved.

Another object of the present invention is to provide a preform cooling pick-up device and its cooling pick-up method, in which the cooling completed by the second clamping part of the second pick-up mechanism is removed in batches in three stages. The preforms that are moving can prolong the cooling time of the remaining preforms that have not been removed, so that the cooling effect can be more perfect.

Another object of the present invention is to provide a preform cooling pick-up device and its cooling pick-up method, because the outer edges of the cooling tubes on the second pick-up mechanism are just in line with the pick-up preforms. The inner edges of each preform are attached to each other, so that each preform can be closer to the cooling source to achieve the effect of rapid cooling, and the inner edge of each preform is attached to the cooling tube, so that the preforms can be provided. Mouth-supporting function, to avoid the deformation of the bottle mouth of each preform due to cold shrinkage, to ensure the roundness of the bottle mouth, so that when the bottle cap and the bottle mouth of the preform are joined together, good airtightness can be obtained .

Yet another object of the present invention is to provide a preform cooling pick-up device and cooling pick-up method thereof, since the first pick-up mechanism takes out the preform from the mold, and then transfers it to the second pick-up mechanism for further processing. Concentrated cooling, so that the volume of the first picking mechanism can be effectively reduced, and its load capacity can be greatly reduced so that the first picking mechanism of the present invention can move at high speed, and the speed of taking out each preform can be faster , thereby improving the efficiency of the overall process.

Another object of the present invention is to provide a preform cooling pick-up device and cooling pick-up method thereof, which can greatly reduce the load capacity of the first pick-up mechanism, and make the driving of the first pick-up mechanism The power source can also be reduced accordingly, thereby achieving the effects of energy saving and cost reduction.

In order to achieve the aforementioned purpose, the present invention provides a preform cooling pick-up device, which is arranged on one side of an injection molding machine, and is used to pick up the preform formed by the mold of the injection molding machine, the bottle Embryo cooling extraction device includes:

A first pick-up mechanism, which has a first transmission arm and a first clamping part, the transmission arm can move back and forth, and the first clamping part is arranged at one end of the transmission arm, and is synchronized with the first transmission arm Move, and the first picking mechanism uses the first clamping part to pick up each preform formed by the mold of the injection molding machine from the mold, and the first clamping part performs the first-stage cooling effect on the outer edge of the preform , and after each preform is taken out, the injection molding machine will perform the action of injecting and molding the preform again for the next picking action of the first picking mechanism;

A second pick-up mechanism, which has a second transmission arm and a second clamping part, the second transmission arm can perform a reciprocating movement, and the second clamping part is arranged at one end of the second transmission arm, and synchronizes with the second clamping part The two transmission arms move, and the second pick-up mechanism picks up each preform on the first clamping part of the first pick-up mechanism with the second clamping part, and makes the first pick-up mechanism of the first pick-up mechanism during pick-up The first clamping part and the second clamping part of the second pick-up mechanism perform the second-stage cooling on the outer and inner edges of each preform at the same time, and continue to perform the third cooling on the inner edge of each preform after picking. staged cooling, and after the second clamping part picks up a predetermined number of preforms, the preforms located on the second clamping part will be sequentially removed in batches.

The present invention has the following advantages:

1. In the present invention, the preform is taken out from the mold to perform the cooling process, thereby separating the preform injection molding process from the preform cooling process, so that the injection molding machine can continue to perform the injection molding action without being blocked interruption, thereby improving the production efficiency of the injection molding machine.

2. In the cooling pick-up device of the present invention, when the first clamping part picks up the preforms, it performs the cooling action at the outer edge of each preform in the first stage; and when the second clamping part and the first clamping part When the preforms on the manufacturing part are joined to each other, each preform will be simultaneously cooled by the first clamping part and the second clamping part to cool the outer and inner edges of the preforms respectively, and provide the second stage of cooling for the preforms Then, the preforms are carried to the collecting position by the second clamping part, and the inner edge of the preforms is continuously cooled in the third stage, so that the present invention can provide multi-stage cooling actions for each preform, so as to The preforms are indeed cooled, which can effectively improve the yield of each preform.

3. The present invention sequentially removes the preforms that have been cooled by the second clamping part of the second picking mechanism in batches in three stages, thereby prolonging the cooling time of the remaining preforms that have not been removed. Make the cooling effect more perfect.

4. In the present invention, since the outer edges of the cooling pipes on the second picking mechanism are in close contact with the inner edges of the preforms it picks up, each preform can be brought closer to the cooling source to achieve rapid cooling The effect, and because the inner edge of each preform is attached to the cooling tube, it can provide a support function for the bottle mouth of each preform, avoiding the deformation of the bottle mouth of each preform due to cold shrinkage, To ensure the true roundness of the bottle mouth, good airtightness can be obtained when the bottle cap and the bottle mouth of the preform are joined together.

5. The present invention uses the first picking mechanism to take out the preforms in the mold, and then transfers them to the second picking mechanism for centralized cooling, so that the volume of the first picking mechanism can be effectively reduced, and its The load capacity enables the first picking mechanism of the present invention to move at a high speed, and makes each preform take out faster, thereby improving the efficiency of the overall process.

6. Since the present invention can greatly reduce the load capacity of the first picking mechanism, the power source for driving the first picking mechanism can also be reduced accordingly, thereby saving energy and reducing costs.

Description of drawings

Fig. 1 is a top view of the present invention

Fig. 2 is the front view of the present invention

Fig. 3 is a three-dimensional exploded view of the preform suction tube of the present invention

Fig. 4 is a schematic structural view of the first clamping part of the present invention

Fig. 5 is a schematic structural view of the second clamping part of the present invention

Fig. 6 is a schematic diagram of the structural state when the first clamping part and the second clamping part of the present invention are engaged with each other

7 to 29 are schematic flow charts of the preform cooling and extraction method of the present invention

Figure 30 is a schematic diagram of a conventional preform cooling device

Fig. 31 is a partially enlarged schematic view of a conventional preform cooling device during cooling operation

Fig. 32 is a schematic diagram of the action of the conventional preform cooling device when picking up the preform, which is used to show the state when the clamp arm is in the first picking position and ready to pick up the preform

Figure 33 is a schematic diagram of the action of the conventional preform cooling device when picking up the preform, which is used to show the state when the clamp arm is in the second picking position and ready to pick up the preform

Fig. 34 is a schematic diagram of the action of the conventional preform cooling device when picking up the preform, which is used to show the state when the clamp arm is in the third picking position and ready to pick up the preform

The above purpose of the present invention is described in detail through specific examples, but it is not intended to limit the protection scope of the present invention.

Detailed ways

As shown in Fig. 1 to Fig. 29, all those disclosed in the figures are selected embodiments of the present invention.

As shown in Fig. 1 and Fig. 2, it is a cooling pick-up device for a preform provided by the present invention, which is installed on one side of an injection molding machine 11, and the injection molding machine 11 has a mold that can be closed repeatedly and The mold 12 of the mold opening, the mold 12 forms a plurality of airtight mold cavities 14 when the mold is closed, for injection of plastic melt into the mold cavities 14 and after a molding time, a plurality of preforms 21 can be formed, and After the mold 12 is opened, it can be taken out by the cooling pick-up device of the present invention; and the cooling pick-up device is mainly composed of a first pick-up mechanism 31 and a second pick-up mechanism 41, wherein: the first pick-up mechanism The pick-up mechanism 31 has a track 32, a first transmission arm 33 and a first clamping portion 34, and the first transmission arm 33 can move along the track 32 at an initial position A, a target position B and a reciprocating movement between the cooling positions C, wherein the target position B is located in the mold 12, the cooling position C is located on the side corresponding to the second pick-up mechanism 41, and the starting position A is located at the target position B and the cooling position C Between, in this embodiment, the initial position A is adjacent to the side of the mold 12, and when the mold 12 has not yet completed the injection molding, the first clamping part 34 is located at the initial position A to wait for the mold 12 to open, the first The clamping part 34 is disposed at one end of the first transmission arm 33 and can move synchronously with the first transmission arm 33 .

As shown in Fig. 3 and Fig. 4, a plurality of preform suction tubes 35 are arranged on the first clamping part 34, a first through groove 36 and a second through groove 37 are arranged in the first clamping part 34, A through groove 36 is connected with a first air nozzle 38 to perform an action of sucking air, the second through groove 37 can allow a coolant to circulate, and each preform suction pipe 35 is composed of an outer sleeve 351 and an inner part respectively. 352 are nested with each other, and one end of the built-in part 352 has an opening 353 only for accommodating the preform 21, and the other end is provided with an air hole 354, a water inlet 355 and a water outlet 356. It communicates with the first through groove 36, and the other end of the air hole 354 communicates with the opening 353 of the built-in part 352, and a spiral slot 357 is arranged on the outer edge ring of the built-in part 352, the water inlet 355 and the The water outlet 356 communicates with the second through groove 37 with its one end respectively, and the other end of the water inlet 355 and the water outlet 356 communicates with the helical slot 357 respectively, so that the flow of the second through groove 37 The coolant can enter the spiral groove 357 on the outer edge of the built-in part 352 along the water inlet 355, and then flow out from the water outlet 356; when the mold 12 of the injection molding machine 11 is opened, the first transmission arm 33 drives the first The clamping part 34 moves from the starting position A to the target position B (as shown in FIG. 1 ), and nests the preforms 21 with the openings 353 of the preform suction pipes 35. At this time, the first air nozzle 38 sucks The negative pressure and vacuum effect caused by the gas makes the preforms 21 tightly adsorbed in the openings 353 of the preform suction pipes 35, and at the same time, the preforms 21 are absorbed by the spiral grooves 357 in the preform suction pipes 35. The cooling effect of the circulating cooling liquid, so that when the preforms 21 are respectively adsorbed in the openings 353 of the suction pipes 35 of the preforms, the outer edge of the preforms 21 can be cooled in the first stage, and then the first clamping The manufacturing part 34 carries the preform 21 and moves to the cooling position C, and the cooling position C is divided into a first picking position C1, a second picking position C2 and a third picking position C3, (in the following The positions of C1, C2, and C3 are marked in the accompanying drawings), and the injection molding machine 11 will carry out the action of injection molding the preforms 21 again after the preforms 21 of the mold 12 are taken out for the first pick-up mechanism 31. A clamping part 34 performs the next picking action.

As shown in Figure 1 and Figure 2, wherein, the second pick-up mechanism 41 has a second transmission arm 42 and a second clamping part 43, the second transmission arm 42 can be between the collecting position D and the material taking position E The second clamping part 43 is disposed at one end of the second transmission arm 42 and can move synchronously with the second transmission arm 42 . As shown in Figure 5, wherein, the second clamping part 43 is provided with a plurality of cooling pipes 45, and the second clamping part 43 has a third through groove 46 and a fourth through groove 47, the third through groove 46 is used to connect with the second air nozzle 48 to carry out the action of sucking air, and the fourth through groove 47 is then available for a coolant to circulate. In addition, the second clamping part 43 is pivotally connected to one end of the second transmission arm 42 so that the second clamping part 43 can reciprocate and rotate between the collecting position D and the discharging position F (as shown in FIG. 18 ).

In addition, the cooling pipe 45 is respectively provided with a through hole 451 in its axial center, and the through hole 451 communicates with the third through groove 46, and has a cooling channel 452 inside the cooling pipe 45, and the cooling flow The channel 452 communicates with the fourth through-groove 47, so that the cooling fluid flowing through the fourth through-groove 47 can also flow into the cooling channel 452 of the cooling pipe 45, and the shape of the outer edge of the cooling pipe 45 is exactly the same as that of the preform 21. The shapes of the inner edges correspond to each other; and when the first clamping part 34 carries the preform 21 to the first pick-up position C1 of the cooling position C of the first transmission arm 33, the second transmission arm 42 simultaneously moves from the collecting position D Move to the pick-up position E, and use the cooling pipe 45 on the second transmission arm 42 to engage with the preforms 21 on the first clamping part 34. At this time, as shown in FIG. 6, each preform 21 simultaneously The outer and inner edges of the preform 21 are cooled by the first clamping part 34 and the second clamping part 43 respectively, and because the outer edge of the cooling pipe 45 is exactly the same as the captured The inner edges of the preforms 21 are attached to each other, thereby, in addition to rapidly cooling the heat on each preform 21, it is also possible to make each preform 21 shrink when it is cold. The inner edge of the inner edge is closer to the cooling source generated by the cooling pipe 45 to obtain a better cooling effect, and after a predetermined cooling time, the first air nozzle 38 of the first extraction mechanism 31 will stop the suction function, Instead, the second air nozzle 48 of the second pick-up mechanism 41 is used to inhale air, thereby forming a negative pressure vacuum effect, so that each preform 21 must be tightly closed by the cooling pipes 45 of the second clamping part 43 instead. Adsorption, at this time, the second transmission arm 42 returns to the collection position D from the material taking position E, and is cooled by the cooling liquid circulated in the cooling channels 452 inside the cooling pipes 45, and continues to The inner edge of the preform 21 undergoes the third stage of cooling, and at this time the first clamping part 34 returns to the starting position A, waiting for the injection molding machine 11 to complete the injection molding of the next stage of the preform 21, and then the first The first clamping part 34 of the picking mechanism 31 continues to pick up the injection-molded preforms 21, and then the first clamping part 34 carries the picked out preforms 21 to the second picker in sequence. The position C2 and the third capturing position C3 are used for capturing by the second capturing mechanism 41 .

However, when the second clamping part 43 of the second picking mechanism 41 picks up a certain number of preforms 21 sequentially through the above picking action, the second clamping part 43 will be activated by a rotary cylinder 44, And rotate from the collecting position D to the discharging position F, at this time the second air nozzle 48 will stop the air suction action, and by the pushing action of a push piece 49, the second clamping part 43 corresponding to the first In the cooling position C of a clamping part 34, the preforms 21 that have been picked up and cooled by the first pick-up position C1 are sequentially unloaded in batches. The negative pressure vacuum circuit formed by the gas nozzle 38 and the second gas nozzle 48 is designed as a conventional structure, so its structure will not be described in detail here.

A conveying mechanism 51, which is arranged below the second picking mechanism 41, the conveying mechanism 51 is a conveyor belt structure in this embodiment, and is only used for accepting the unloading by the second clamping part 43 of the second picking mechanism 41. Each preform 21 that has been cooled, and the preform 21 is transported to the next process.

In order to improve the cooling rate of the preform 21, a defogger (not shown) can also be installed next to the second pick-up mechanism 41, and the defogger can be used to blow out a cold air 61 (as shown in Figure 5). , and can accelerate the cooling rate of each preform 21 on the second clamping part 43 of the second pick-up mechanism 41. Since the defogger is a conventional structure and is not the focus of the application of the present invention, it will not be described in detail here. describe its overall structure.

As shown in Fig. 7 to Fig. 29, it is the cooling extraction method performed by the above-mentioned components in the present invention, and its steps include:

a. The mold 12 of the injection molding machine 11 is closed, and the injection molding operation of each preform 21 is carried out in each mold cavity 14 (as shown in Figure 7);

b. After a predetermined molding time, the injection molding machine 11 opens the mold, and forms a plurality of high-temperature preforms 21 finished products (as shown in FIG. 8 );

c. The first clamping part 34 of the first picking mechanism 31 moves from the initial position A to the target position B (as shown in Figure 9 ), and enters the mold 12 in the mold-opening state. At this time, the mold 12 The inner pushing mold 16 pushes the preform 21 out toward the direction of the first clamping part 34, so that the preform 21 can be accommodated in each preform suction tube 35 of the first clamping part 34, and the The suction negative pressure generated by the first air nozzle 38 inside a clamping part 34 captures the preform 21 onto the first clamping part 34 (as shown in FIG. 10 );

d. The first clamping part 34 of the first picking mechanism 31 moves from the target position B to the first picking position C1 of the cooling position C, so that each preform 21 has to be moved out of the mold 12, and the second The first clamping portion 34 of the pick-up mechanism 31 can perform a first-stage cooling effect on the outer edge of the preform 21 due to the cooling liquid flowing inside it, and the first pick-up mechanism 31 will hold the preform 21 After removing the mold 12, the injection molding machine 11 closes the mold immediately to carry out the next stage of injection molding processing (as shown in Figure 11 and Figure 12);

e. The second clamping part 43 of the second pick-up mechanism 41 moves from the collecting position D to the taking-out position E, and engages with each preform 21 on the first clamping part 34. At this time, each bottle The preform 21 is simultaneously subjected to the second-stage cooling action of the outer and inner edges of the preform by the first clamping part 34 and the second clamping part 43 (as shown in FIG. 13 ), and after a predetermined cooling time, Then the preform 21 is carried by the second clamping part 43 from the retrieving position E to the collecting position D (as shown in Figure 14), and at the same time, the second clamping part 43 of the second pick-up mechanism 41 Continue to carry out the third-stage cooling action on the inner edge of each preform 21, and the first clamping part 34 returns from the first picking position C1 to the initial position A, waiting for the injection molding machine 11 to complete the next stage of the preform 21 injection molding, and then use the first clamping part 34 of the first picking mechanism 31 to continue picking up each preform 21 that has been formed (as shown in Figure 15);

f. Steps b to e are repeated, wherein the first clamping part 34 is used to carry the preforms 21 to the second picking position C2, and then the second clamping part 43 is used to pick up each preform 21 (as shown in Figure 16 shown), and then the first clamping part 34 carries each preform 21 from the mold 12 to the third pick-up position C3 for the second clamping part 43 to pick up, so that the second clamping part 43 Capture a predetermined number of preforms 21 (as shown in Figure 17);

g. The second clamping part 43 of the second picking mechanism 41 is moved from the collecting position D to the discharging position F by the action of a rotating cylinder 44 to perform a discharging action (as shown in FIG. 18 ), and then And a part of the preforms 21 are removed from the second clamping section 43; (taking this embodiment as an example, the preforms 21 on the first row of cooling pipes and the fourth row of cooling pipes are first removed, as shown in Figure 19);

h. Use an output mechanism 51 to accept the cooled preform 21 discharged from the second clamping part 43, and output the preform 21 (as shown in Figure 19);

i. Continue to repeat step b to step e, wherein the first clamping part 34 moves to the first picking position C1 again, and the second clamping part 43 picks up the part of the preform 21 removed in step g for the first The preform 21 on the clamping part 34 (taking this embodiment as an example, when the first clamping part 34 moves to the first picking position C1, the preform 21 on the first clamping part 34 and the second clamping part The first row of cooling pipes and the fourth row of cooling pipes of the manufacturing part 43 correspond to each other, and are used to pick up the preform 21 located on the first clamping part 34, as shown in Figure 20 and Figure 21);

j. The second clamping part 43 of the second pick-up mechanism 41 moves from the collecting position D to the discharging position F to perform a discharge action to remove another part of the preform 21 from the second clamping part 43 To the conveying mechanism 51 (taking the present embodiment as an example, the preforms on the second row of cooling pipes and the fifth row of cooling pipes are removed instead (as shown in Figure 22 and Figure 23);

k. Next, in this embodiment, the first clamping part 34 transfers each preform 21 extracted from the mold 12 to the second picking position C2. At this time, the preforms 21 on the first clamping part 34 are Corresponding to the second row of cooling pipes 45 and the fifth row of cooling pipes 45 on the second clamping section 43, each preform 21 is picked up on the second clamping section 43 (as shown in Figure 24 and Figure 25 shown), then the third row of cooling pipes 45 and the sixth row of cooling pipes 45 on the second clamping part 43 are unloaded (as shown in Figure 26 and Figure 27), and then when the first clamping part 34 bottle When the preforms 21 are carried to the third picking position C3, each preform 21 on the first clamping part 34 can correspond to the third row of cooling pipes 45 and the sixth row of cooling pipes 45 on the second clamping part 43, And thereby pick each preform 21 onto the second clamping part 43 (as shown in FIG. 28 and FIG. 29 ).

And continue to circulate according to this principle, repeat step i～step k, so that the preforms 21 located on the second picking mechanism 41 of the present invention can be unloaded in batches in sequence, and because the preforms just picked up 21 will not be removed immediately, so that the cooling time of the preform 21 on the second pick-up mechanism 41 can be prolonged, so as to achieve the effect of sure cooling.

In addition, the method for picking up preforms of the present invention is not limited to the picking method with three picking positions adopted in the above-mentioned embodiment, the present invention can also be based on the number of preforms that can be carried by the second picking mechanism 41 Different, more than four cooling positions can be used to extract preforms in batches.

However, before the actual operation of the present invention, since the injection molding machine 11 is performing the first injection molding operation, impurities caused by the previous operation will remain in the mold cavity 14 of the mold 12, so the injection molding machine 11 The preforms 21 that are injected for the first time are often discarded to avoid affecting the yield rate of the overall process.

Claims (24)

1. the cooling acquisition device of a bottle embryo, it is arranged at a side of a Jet forming machine, and in order to the bottle embryo of acquisition by the mould institute moulding of this Jet forming machine, this device includes:

One first acquisition mechanism, it has one first transmission arm and one first pinch, transmission arm can carry out one and move back and forth, first pinch is arranged at an end of first transmission arm, and can move with first transmission arm synchronously, and first acquisition mechanism is come out by acquisition in the mould with formed in mould each bottle embryo of first pinch with Jet forming machine, and first pinch carries out the cooling effect of phase I to bottle embryo outer rim, and Jet forming machine is after each bottle indusium takes out, the action of ejection formation bottle embryo will be carried out once more, for the acquisition action next time of first acquisition mechanism;

One second acquisition mechanism, it has one second transmission arm and one second pinch, this second transmission arm system can carry out one and move back and forth, and second pinch system is located at one of this second transmission arm end, and can move with second transmission arm synchronously, and this second acquisition mechanism system captures each bottle embryo on first pinch of first acquisition mechanism with second pinch, and second pinch that makes first pinch of first acquisition mechanism and second acquisition mechanism in acquisition is simultaneously to outside this bottle embryo respectively, inner edge carries out the cooling effect of second stage, and edge carries out the cooling effect of phase III within acquisition back system continues each bottle embryo, and second pinch to the bottle embryo of a predetermined quantity, promptly can give removal in batches with each bottle embryo that is positioned on second pinch in acquisition in regular turn.

2. the cooling acquisition device of bottle embryo as claimed in claim 1, wherein first transmission arm carries out one and moves back and forth in order to drive first pinch between an initial position, a target location and a cool position, and this target location is arranged in mould, cool position is positioned at and the corresponding side of second acquisition mechanism, original position is then between target location and cool position, when mould was not finished ejection formation as yet, first pinch was positioned at original position to wait for the mould die sinking.

3. the cooling acquisition device of bottle as claimed in claim 1 embryo is characterized in that, this first is picked

Getting mechanism moves back and forth in orbit.

4. the cooling acquisition device of bottle embryo as claimed in claim 2 is characterized in that original position is a side that is adjacent to mould.

5. the cooling acquisition device of bottle as claimed in claim 2 embryo is characterized in that, when mould is finished ejection formation and during die sinking, first pinch moves to this target location, with each bottle embryo in the acquisition mould.

6. the cooling acquisition device of bottle embryo as claimed in claim 2 is characterized in that, behind each bottle embryo in first pinch acquisition mould, first pinch moves to cool position by this target location.

7. the cooling acquisition device of bottle embryo as claimed in claim 6 is characterized in that, cool position system divides into one first acquisition position, one second acquisition position and one the 3rd acquisition position.

8. the cooling acquisition device of bottle embryo as claimed in claim 1, it is characterized in that, first pinch is provided with a plurality of bottles of embryo suction tubes, have one first groove and one second groove in first pinch, first groove and first valve join and the action of drawing air, second groove is then for cooling fluid circulation, and each bottle embryo suction tube is socketed to form mutually by a package assembly and a built-in part respectively, only supply ccontaining this bottle embryo and have an opening in this built-in part one end, the other end then offers a pore, one inlet opening and a delivery port, this pore is connected with first groove with the one end, the pore other end then is connected with the opening of this built-in part, and edge is equipped with a helical form short slot outside built-in part, water inlet is connected with second groove with the one end respectively with delivery port, and water inlet is connected with the helical form short slot respectively with the other end of delivery port.

9. the cooling acquisition device of bottle embryo as claimed in claim 8 is characterized in that the cooling fluid that second groove is circulated is flowed out by delivery port along the helical form short slot that water inlet enters the built-in part outer rim again.

10. the cooling acquisition device of bottle embryo as claimed in claim 8, it is characterized in that, when each bottle embryo is placed in the opening of each built-in part,, and bottle embryo closely is adsorbed in bottle opening of embryo suction tube by the air-breathing negative-pressure vacuum effect that causes of first valve.

11. the cooling acquisition device of bottle as claimed in claim 1 embryo is characterized in that second pinch is arranged at an end of second transmission arm, so that second pinch is got material level and is moved back and forth between putting in the position and that gathers materials.

12. the cooling acquisition device of bottle embryo as claimed in claim 1, it is characterized in that, on second pinch, be provided with a plurality of cooling tubes, have one the 3rd groove and a four-way groove in second pinch, the 3rd groove and one second valve join can carry out one draw air actuated, the four-way groove is then for cooling fluid circulation, and cooling tube is respectively equipped with a through hole that connects in its axle center, and through hole also is connected with the 3rd groove of second pinch, and has a coolant flow channel in cooling tube inside, and coolant flow channel and four-way groove are interconnected, and the outer rim shape of cooling tube is corresponding mutually with the inner edge shape of bottle embryo.

13. the cooling acquisition device as claim 12 a described bottle embryo is characterized in that, when bottle indusium cooling tube captures, by the air-breathing negative-pressure vacuum effect that causes of second valve, a bottle embryo closely is adsorbed on the cooling tube.

14. the cooling acquisition device of bottle embryo as claimed in claim 1 is characterized in that, is provided with a conveying mechanism in second acquisition mechanism below, supplies to accept the bottle embryo of second pinch institute removal, and each bottle embryo is carried.

15. the cooling acquisition device of bottle embryo as claimed in claim 14 is characterized in that conveying mechanism is a conveyer belt structure.

16. the cooling acquisition device of bottle embryo as claimed in claim 14 is characterized in that second pinch is hubbed at an end of second transmission arm, carries out reciprocal turn so that second pinch gathers materials one between a position and the discharge position.

17. the cooling acquisition device of bottle embryo as claimed in claim 1 is characterized in that, is provided with a fogbroom on second acquisition mechanism side, fogbroom is used for blowing out cold air, and quickens to cool off each bottle embryo that is positioned on second acquisition mechanism.

18. the cooling acquisition method of a bottle embryo, its step includes:

A. the mould of a Jet forming machine carries out mold closing, and carries out the ejection formation operation of each bottle embryo in each die cavity;

B. after a molding time of being scheduled to, Jet forming machine carries out die sinking, and is formed with the bottle embryo of a plurality of high temperature;

C. first pinch of one first acquisition mechanism moves to a target location by an initial position, and enters in the mould that is die opening state, and the intake negative-pressure effect that is produced by first valve of the first pinch inside, with the acquisition of bottle embryo to first pinch;

D. first pinch of first acquisition mechanism, move to a cool position by the target location, and each bottle embryo is shifted out outside mould, and first pinch of first this acquisition mechanism is by the cooling fluid effect of its internal circulation, and the outer rim of bottle embryo is carried out the cooling effect of phase I, and after first acquisition mechanism shifted out mould with the bottle embryo, Jet forming machine mold closing was immediately processed with the ejection formation that carries out next stage;

E. second pinch of one second acquisition mechanism, move to one and get material level and put by the position that gathers materials, and be bonded with each other with each bottle embryo on first pinch that is positioned on the cool position, at this moment, each bottle embryo is subjected to first pinch and second pinch simultaneously respectively to outside each bottle embryo, the cooling action of the second stage that inner edge carries out, and after a cool time of being scheduled to, by second pinch bottle embryo is put carrying to the position that gathers materials by getting material level again, simultaneously, second pinch of second acquisition mechanism continues each bottle embryo inner edge is carried out the cooling action of phase III, and first pinch, is moved with pending acquisition next time to original position by the cool position involution;

F. repeating step b～step e captures bottle embryo that a predetermined quantity is arranged on second pinch;

G. second pinch of second acquisition mechanism carries out discharging action, is drawn off by second pinch with the bottle embryo that will be arranged in last part of second pinch;

H. continue repeating step b～step e, and first pinch moves to this second pinch in the position that bottle embryo component that step g draws off divides, and must capture bottle embryo on first pinch for second pinch;

I second pinch carries out the discharging action once more, with with another part on second pinch the bottle embryo by drawing off in second pinch, then first pinch is again by acquisition bottle embryo in the mould, and move to the correspondence position that second bottle embryo component that pinch draws off divides, so that second pinch must capture the bottle embryo on first pinch.

19. the method for bottle embryo cooling acquisition as claimed in claim 18, it is characterized in that, the target location is arranged in mould, cool position is positioned at and the corresponding side of second acquisition mechanism, original position is then between target location and cool position, when mould was not finished ejection formation as yet, first pinch system was positioned at original position to wait for the mould die sinking.

20. the method for bottle embryo cooling acquisition as claimed in claim 19 is characterized in that original position is adjacent to mould one side.

21. the method for bottle embryo cooling acquisition as claimed in claim 18 is characterized in that second pinch gathers materials one and carries out reciprocal turn between a position and the discharge position.

22. the method for bottle embryo cooling acquisition as claimed in claim 18 is characterized in that, cool position is divided into one first acquisition position, one second acquisition position and one the 3rd acquisition position.

23. the method for bottle embryo cooling acquisition as claimed in claim 22, it is characterized in that, first pinch captures each bottle embryo earlier in regular turn to the first acquisition position, on the second acquisition position and the 3rd acquisition position, capture each bottle embryo that is positioned on first pinch for second pinch, then second pinch will be by first acquisition each bottle embryo that the position captured by the second pinch removal, and make first pinch move to the first acquisition position, be positioned at each bottle embryo on first pinch of the first acquisition position by second pinch acquisition again, then second pinch carries out the discharging action again, and will be by second acquisition each bottle embryo that the position captured by the second pinch removal, this pinch is transferred to the second acquisition position with each bottle embryo afterwards, capture for second pinch, then will be by the 3rd acquisition each bottle embryo that the position captured by drawing off in second pinch, make first pinch again with each bottle embryo carrying to the three acquisition positions, capture for second pinch.

24. the method for bottle embryo cooling acquisition as claimed in claim 18 is characterized in that cool position is distinguished the acquisition position that has more than three.

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