JP3081527U - Structure of plastic bottle core blow molding machine - Google Patents

Abstract

(57) [Abstract] (with revisions) [Problem] To improve the work flow of a traditional molding machine, increase the number of bottles molded in the same time, increase production capacity, and save energy resources. , Reduce manufacturing costs,
Increase product competitiveness. SOLUTION: Heating loop device 20 and forming loop device 4
0, the heating loop device is provided with a heating area 22, the molding loop device is provided with a bottle blow cavity sheet 41, one end of the heating loop device is provided with a core entry area 21, and the other end is provided with a conversion mechanism. 30 is provided, at least one forming loop device 40 is provided on the side of the conversion mechanism, and the bottle core is transferred from the heating loop device to the forming loop device by the conversion mechanism and processed into a bottle by the bottle blow cavity sheet. The structure of the plastic bottle core blow molding machine.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a structure of a kind of plastic bottle core blow molding machine, and in particular, to improve a single closed loop production mechanism of a traditional plastic bottle core blow molding machine to provide an open loop production mechanism without heating and heating. The present invention relates to a structure for forming a production circulation system further combining two independent mechanisms of molding. The present invention relates to an improved structure of a step-type blow molding machine.

[0002]

[Prior art]

 At present, bottle core biaxial stretch blow molding machines in the world are divided into continuous rotary machine type and step type machine type. The operation of these two types of blow molding is as follows.

[0003] In the continuous rotary machine type, the blow cavity sheet is of a movable design, a circumferential rotation operation is adopted, the feed and the heating area are combined into one circulation system, and the blow molding cavity sheet is used. And the bottle outlet form a separate circulation system, in which the blow cavity sheet is fixed around one central axis, this central axis is the rotation axis, and the bottle core is moved into the blow cavity sheet after heating. And blow molded. The advantage is that the design of a large number of cavity sheets increases the production speed and the production volume. The disadvantages are the high price of the molding machine, the high repair cost, and the specialty with high technology. It cannot be repaired without personnel, and it requires a relatively large source of power energy to rotate and drive the rotating design with multiple sets of blow cavity sheets, and also to stop the machine. In addition to the high energy required, it is difficult to observe the faulty part of the machine, and at the time of repair, not only requires a high technology for its kinetic inertia control, but also the strength of the corresponding structure reduces the design and cost. It is the biggest burden.

[0004] The step-type machine type is designed so that the blow cavity sheet is fixed and immovable, and is operated by moving the core material. Its advantages are low cost, low repair cost, and saving of power energy. It is easy to observe failures and can be repaired immediately by ordinary technical personnel.

The present invention is an improvement on the step-type machine type, and therefore, only the conventional step-type machine type will be described. FIG. 1 is a schematic view of a step-type bottle blow molding machine. It is provided with automated mechanism elements in a closed loop mechanism, of which a core entry area 11, a heating area 12, a bottle blow cavity sheet 13 and a bottle delivery area 14 are provided. In this mechanism, the bottle core 10 enters from a core entry area 11, is heated in a heating area 12 along a conveyor belt, and then enters a bottle blow cavity sheet 13 to be blow-molded into a bottle. And from the bottle delivery area 14 through the closed loop circulation mechanism. Also, a large number of carriers are provided on the conveyor belt of the circulation mechanism from the core entry area 11 to the bottle delivery area 14 to carry out the work of transporting the bottle core 10 and the product bottles, thereby achieving a fully automated work.

[0006] The transport design of the bottle core carrier of this traditional step type molding machine is basically divided into two. One of them is designed so that the carrier device is connected to the conveyor belt of the circulation mechanism to operate and move.The other is that the carrier is independent and is not connected to the conveyor belt, and the carrier device is designed to start up in a group system. It is designed to move. The joint feature of the two types is that they are both intermittent in terms of time, and they belong to the block type in terms of carrier movement, while the step-type transport method retains this traditional design philosophy. A typical single closed loop system has the following disadvantages. 1. Dry run time (DRY CYCLE TIME) and production volume are directly affected by the length of the block distance, so that the width of the cavity or the number of cavities of the device on the cavity sheet becomes large or the number of cavities increases. When the number of bottles increases, the time required for the blocks of the transport bottle cores becomes longer, and it is no longer possible to maintain the goal of high production efficiency when the size of the equipment or the production capacity is increased. 2. In the case of a design mechanism with a fixed carrier pitch and cannot be adjusted, all are operated on each mechanism with a fixed cavity pitch during the molding process. Functions cannot be achieved, energy is wasted, and the equipment becomes larger.Moreover, the production cost and the load on the used space are increased, and in terms of production capacity, the ideal production volume is effectively increased. Could not be achieved. 3. Due to the design of the single closed loop, for the bottle manufacturing process, the corresponding mechanism of each one molding function step must be connected in the carrier transport circulation loop in order, thus increasing the size of the equipment. At the time of development, the production machine with high efficiency could not be achieved because of the disadvantages 1 and 2 mentioned above. The bottle core moves within the heating area 12, and the effective range of the heating area 12 is adjusted according to the time and distance required for core molding, the function of the heating furnace in the heating area, and the distance of the stepwise movement. A decision has to be made and this design method has too few bottle cores 10 in the heating area 12 because the bottle core 10 is limited by the carrier distance, and this limitation results in waste of heating energy and at the same time The volume of the entire machine needs to be increased, which has the disadvantage of occupying excessive factory space. 4. As can be seen from the above design, each machine part and the conveyor belt of the circulation mechanism are skewed with the carrier, which increases the length of the circulating conveyor belt and makes it difficult to routinely perform positioning during movement. Calibration was required due to errors, which became a routine problem, affecting production and product quality. 5. A set of recirculating bottle blow transport systems has its heating means combined into a slightly single set of bottle blow cavity sheets and has a lower production capacity than a continuous rotary type. The step mechanism reduces the waste of thermal energy, i.e. the bottle cores in the heating area are arranged with a minimum distance of the bottle cores, pitch adjusted by the pitch adjuster when reaching the bottle blow cavity sheet, and then transferred into the cavity sheet. It can be blow molded to improve furnace design and increase energy efficiency. However, this was also limited by the problem of increasing the size of the bottle blow cavity sheet, so that the production energy could not be increased.

As can be seen from the above, known designs have the economic value of production capacity, but also have unavoidable drawbacks, which should be remedied and the advantages of each type of molding machine. There is a need to provide new designs that are integrated together.

[0008]

[Problems to be solved by the invention]

 The main purpose of the present invention is to combine a set of heating loops with a plurality of sets of bottle blow cavity sheets to increase production efficiency, achieve a high-efficiency, large-size step-type molding machine, and increase the heating area. To reduce the length of the heating furnace, increase the number of bottle cores in the furnace, and reduce energy waste and production costs.

[0009]

[Means for Solving the Problems]

 The invention of claim 1 comprises a heating loop device and a forming loop device, wherein the heating loop device is provided with a heating area, the forming loop device is provided with a bottle blow cavity sheet, and a core enters one end of the heating loop device. An area is provided and the other end is connected to the conversion mechanism, and at least one forming loop device is provided on the side of the conversion mechanism. The conversion mechanism transfers the bottle core from the heating loop device to the forming loop device, and bottle blowing. It is a plastic bottle core blow molding machine characterized by being processed into a bottle by a cavity sheet. The invention according to claim 2 comprises a heating loop device, wherein the heating loop device is provided with a heating area, a core entry area is provided at one end, and a conversion mechanism is connected to the other end, and at least one of the conversion mechanisms is provided around the conversion mechanism. One bottle blow cavity sheet is provided, and one connecting rod is provided below the bottle blow cavity sheet. The connecting rod transfers the bottle core into the bottle blow cavity sheet and waits for molding into a bottle. The plastic bottle core blow molding machine is characterized in that it is taken out of the bottle blow cavity sheet by a connecting rod. According to a third aspect of the present invention, in the structure of the plastic bottle core blow molding machine, the conversion mechanism is provided with one rotating sheet, and the rotating sheet is provided with a set of clamps, and the clamps are driven by the pneumatic cylinder. It moves back and forth, and rotates on the rotating seat, and one swing arm is provided on the side, and a set of core sheet contacting clamps is provided on the swing arm to move the bottle core and rotate the swing arm. It moves to change the pitch along the slide rails, and then moves the bottle core to the clamp of the connecting rod and then into the mold.The movement of the bottle core conversion mechanism and blow molding are performed synchronously, and the bottle core mold is moved. It has the structure of a plastic bottle core blow molding machine characterized by shortening the entry time.

[0010]

[Embodiment of the invention]

 The design of the present invention adopts an open loop step mechanism design. That is, 1. The core entry mechanism and heating furnace are designed in the first circulation system, that is, the pitch of the heat received by the bottle core is not constrained by the cavity pitch, thereby reducing the minimum pitch of the bottle core for heating, and the heating area is traditionally reduced. Compared to a simple design, it is possible to accommodate more bottle cores at the same dimensional distance, thereby achieving the goal of saving heat energy and miniaturizing equipment. 2. The heated bottle core is transferred to the second circulation system by a transfer conversion mechanism, and this circulation system has a bottle blow cavity sheet and a bottle delivery mechanism, and the conversion mechanism transfers the heated bottle core to the bottle blow cavity sheet. When moving, adjust the carrier and bottle core pitch simultaneously to equal the cavity pitch. 3. The open loop design overcomes the shortcomings of carrier pitch and cavity pits, and always requires the first loop system, the heating loop, and the second loop system, the forming loop, to be non-linear for relatively high production volumes. Must be an array. In this way, one straight line is formed in the first loop, an equal clear space is formed on both sides, and the cavity sheet of the second loop is arranged on both sides of the first loop, so that multiple production can be performed with equal efficiency. Ability can be acquired. This can combine the above designs 1 and 2 to produce a high efficiency, high productivity, low production cost step-type bottle blow molding machine, which requires the traditional dry cycle time and time required for block movement. Better than machine type.

[0011]

【Example】

 As shown in FIGS. 2 and 3, the present invention includes a heating loop device 20, a core entry area 21 is provided at a front end of the heating loop device 20, and a rear end of the core entry area 21 is connected to the conversion mechanism 30. One heating area 22 formed of a heating element is provided on the outer edge, and one forming loop device 40 is provided on each side of the conversion mechanism 30, and the heating loop device 20 and the forming loop device 40 The bottle core 10 is fed from the heating loop device 20 to the forming loop device 40, and enters the bottle blow cavity sheet 41 to perform blow molding.

When the bottle core 10 enters the core entry area 21, the pitch thereof only needs to consider the pitch of the bottle core 10 itself, and is not limited by the design of the bottle blow cavity sheet 41. If the number of bottle cores 10 can be increased, the length of the heating area 22 can be reduced, and if the number of bottle cores 10 is relatively dense, saving of heating energy can be achieved, and the number of bottle blow cavity sheets 41 can be reduced. The range or the temperature of the heating area 22 is adjusted according to the bottle blowing speed. When the bottle core 10 moves to the conversion mechanism 30, the conversion mechanism 30 transfers the bottle core 10 into the bottle blow cavity sheet 41, and adjusts the pitch of the bottle core 10 during the movement to form the molding loop device 40 and the bottle blow cavity. The sheet 41 has the same pitch as that of the sheet 41 and is placed inside the sheet 41, and the forming process proceeds. The bottle blow cavity sheets 41 on both sides simultaneously proceed with the molding operation, that is, core distribution and positioning are performed on the bottle blow cavity sheets 41 on both sides simultaneously or sequentially, so that the bottle core 10 is placed and blow molded. proceed.

FIGS. 4 and 5 show another preferred embodiment of the present invention. The bottle blow cavity sheet 41 is provided on both sides of the heating loop device 20, and one connecting rod 51 is provided on the bottle blow cavity sheet 41, and the connecting rod 51 is skewed to the heating loop device 20 by the conversion mechanism 50. . The conversion mechanism 50 first transfers the bottle core 10 from the heating loop device 20 to the connecting rod 51 of the set of bottle blow cavity sheets 41, and the connecting rod 51 transfers the bottle core 10 into the bottle blow cavity sheet 41. As the bottle blowing operation proceeds, the conversion mechanism 50 further places the bottle core 10 on the connecting rod 51 of another bottle blow cavity sheet 41 during the blowing operation of the bottle blow cavity sheet 41 in which the bottle core 10 is placed. The connecting rod 51 further places the bottle core 10 in the bottle blow cavity sheet 41, and at the same time, the bottle blow cavity sheet 41 in which the bottle core 10 has been previously placed connects the already blown bottle to the connecting rod. The other end of the bottle blow cavity sheet 41 by 51 Then, after returning to one end of the conversion mechanism 30 and returning to one end of the conversion mechanism 30 and waiting for further placement of the bottle core 10, the blow operation proceeds at the other end, and thus the blow circulation operation proceeds continuously at both ends. I do.

FIG. 6 shows a design of another preferred conversion mechanism of the cavity entry of the bottle core of the blow molding machine of the present invention. The conversion mechanism 60 is provided with a rotating sheet 61, a set of clamps 62 is provided on the rotating sheet 61, and the clamp 62 moves back and forth under the control of the pneumatic cylinder 63. It rotates upward and is transported onto the core sheet 66 of the revolving arm 65 by pinching a bottle core (not shown) on the transport mechanism 64, and the revolving arm 65 drives the core sheet 66 to slide the rail. The core sheet 66 is moved along the path of the slide rail to change the pitch of the bottle to the position of the connecting rod 68, the bottle core 10 is clamped by another set of clamps 69, and the air pressure cylinder 70 is moved. The connecting rod 68 is driven to transfer the bottle core into the mold, and the clamp 69 fixes the bottle core 10 in the cavity and returns to the original position. When the mold is opened and finished, the bottle and the bottle core in which the clamp 69 is inertized move in and out of the mold synchronously, and the connecting rod 68 of this design receives only a little weight of the bottle core 10 and this minimum. The mass reduces the inertia of the moving motion to a large field, thereby maintaining the positioning with high precision, and achieving the function of shortening the operation time and increasing the production volume without compromising the dry cycle time. Also, the two sets of clamps 62 and 69 have a switch and a function of moving up and down, so that when the bottle core is converted into a different element, it can be smoothly released and fixed, which is a general mechanical element. The operation design of the first embodiment is used and will not be described in detail in this specification.

[0015]

[Effect of the invention]

 From the above description, the blow molding method for transferring the heating core into the cavity has the following features. 1. The heating core is taken out of the heating loop device by a method of sandwiching by an external clamp. 2. With the insertion type (MALE INSERT), the heat core in one clamp is taken out from the inside of the edge of the heating core from the crank opening, and the direction is changed and the pitch is adjusted. 3. Fit the heating core whose direction has been changed and pitch has been adjusted as described in 3.2 into the clamp installed on the connecting rod. The objectives and functions of removing, changing the direction, moving and transferring the heating core are achieved by the operation processes 1, 2, and 3.

The present invention not only enhances the heating effect of the heating area 22, but also reduces the waste of energy, and combines at least one set of bottle blow cavity sheets in the same heating loop system and reduces the waiting time for the entry of the core. It is shortened and therefore its production is several times higher than with traditional bottle blow molding machines. However, in particular, the present invention changes the traditional single loop to a multi-loop, and the added conversion mechanism is a mechanical structure combining a mechanical arm, a moving orbit, a splitter (INDEX), and a pneumatic cylinder. And the connecting rod elements are also the same, all of which are completed by different mechanical structural designs with bottle blow cavity sheets. The present invention seeks the structural relationship of the structure, and therefore, the combined structure and operation relationship of the mechanical elements will not be described one by one. Therefore, the conversion mechanism is, of course, constituted by an arbitrary mechanism design or combination, and the structure relationship is such that the pitch of the bottle core of the blow molding machine can be changed, and the bottle core can be transferred into the cavity to advance the blow molding. If so, they all belong to the technical category of the present invention.

To summarize the above, the complete novelty of the present invention is not yet similar and there is no published or earlier application. And its function has the value of substantially increased industrial utility and therefore has the requirements for utility model registration. The above is only a brief description of the embodiments of the present invention, and does not limit the scope of the present invention, and any modification or alteration of details that can be made based on the present invention shall fall within the scope of the claims of the present invention. I do.

[Brief description of the drawings]

FIG. 1 is a view showing a known bottle blow molding machine.

FIG. 2 is a plan view of the bottle blow molding machine according to the preferred embodiment of the present invention.

FIG. 3 is a front view of the bottle blow molding machine according to the preferred embodiment of the present invention.

FIG. 4 is a plan view of a bottle blow molding machine according to another preferred embodiment of the present invention.

FIG. 5 is a front view of the bottle blow molding machine according to another preferred embodiment of the present invention.

FIG. 6 is a perspective view of another conversion mechanism of the bottle blow molding machine according to the preferred embodiment of the present invention.

[Explanation of symbols]

Reference Signs List 10 Bottle core 11, 21 Core entry area 12, 22 Heating area 13, 41 Bottle blow cavity sheet 14, 42 Bottle delivery area 20 Heating loop device 30, 50, 60 Conversion mechanism 40 Molding loop device 51, 68 Connecting rod 61 Rotating sheet 62, 69 Clamp 63, 70 Atmospheric cylinder 64 Transport mechanism 65 Swivel arm 66 Core sheet 67 Slide rail

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[Procedure amendment]

[Submission date] June 26, 2001 (2001.6.2
6)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claim 2

[Correction method] Change

[Correction contents]

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] Claim 3

[Correction method] Change

[Correction contents]

Claims (3)

[Utility model registration claims] 1. A heating loop device and a forming loop device, wherein the heating loop device is provided with a heating area, the forming loop device is provided with a bottle blow cavity sheet, and one end of the heating loop device is provided with a core entry area. The other end is connected to the conversion mechanism, and at least one forming loop device is provided on the side of the conversion mechanism.The conversion mechanism transfers the bottle core from the heating loop device to the forming loop device, and the bottle is blown by the bottle blow cavity sheet. The structure of a plastic bottle core blow molding machine characterized by being processed into a shape. 2. A heating loop device, wherein a heating area is provided in the heating loop device, a core entry area is provided at one end, and a conversion mechanism is connected to the other end, and at least one bottle is provided around the conversion mechanism. A blow cavity sheet is provided, one connecting rod is provided below the bottle blow cavity sheet, and the connecting rod transfers the bottle core into the bottle blow cavity sheet, and further connects while waiting for molding into a bottle. A structure of a plastic bottle core blow molding machine characterized by being taken out of a bottle blow cavity sheet by a stick. 3. The structure of a plastic bottle core blow molding machine, wherein one rotary sheet is provided on the conversion mechanism, and a set of clamps is provided on the rotary sheet, and the clamps are driven by a pneumatic cylinder to move back and forth. It moves and rotates on the rotating sheet, one pivot arm is provided on the side, and a pair of core sheet receiving clamps is provided on the pivot arm to move the bottle core, and the pivot arm rotates and slides The pitch is modified along the rails, and the bottle core is transferred to the connecting rod clamp and then into the mold. The movement of the bottle core by the conversion mechanism and the blow molding are performed synchronously, reducing the time for entering the mold of the bottle core. The structure of a plastic bottle core blow molding machine, characterized in that: