Variable pitch motor structure for bottle blowing machine

The variable pitch motor structure based on magnetic levitation technology solves the problem of dense transportation during bottle preform conveying, achieving stable, fast, and precise pitch control and efficient pitch change, thereby improving product quality and reducing energy consumption.

CN122442918APending Publication Date: 2026-07-24OUNI WORLD IND CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
OUNI WORLD IND CO LTD
Filing Date
2025-12-30
Publication Date
2026-07-24

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Abstract

A variable pitch motor structure for a bottle blowing machine, comprising a variable pitch conveyor, wherein the variable pitch conveyor has a magnetic levitation track and a plurality of clamps, the clamps are provided with a plurality of magnetic force elements and cooperate with the magnetic levitation track to control the levitation movement of the clamps by magnetic force, and thereby adjust the pitch of the plurality of clamps, the clamps are provided with a chuck, and the chucks of the clamps hold a plurality of preforms, and the magnetic levitation track controls the movement of the plurality of clamps and widens the pitch between the clamps.
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Description

Technical Field

[0001] This disclosure relates to a variable pitch motor structure for a blow molding machine, and more particularly to a variable pitch motor structure for a blow molding machine that utilizes magnetic levitation technology to quickly and accurately transport bottle preforms. Background Technology

[0002] In the preform blow molding production line, the transportation and spacing control of preforms are key to ensuring product quality and production efficiency. If the preforms are too densely packed during the transportation process, they are prone to scratches and deformation. In addition, blow molding requires a certain amount of space to be maintained. The existing preform transportation structure changes the spacing of the preforms after transportation by means of screws, which is still not efficient enough and has concerns about long-term wear.

[0003] To ensure stable and precise spacing control of preforms during transport, magnetic levitation technology is an excellent solution. Compared to traditional mechanical transport, magnetic levitation eliminates the need for physical contact, effectively avoiding concerns about vibration and collision caused by friction. Furthermore, the magnetic levitation system can precisely control the magnetic field strength, achieving contactless driving and positioning during preform transport.

[0004] Therefore, based on years of experience, the inventor has designed this invention, conducted extensive research and sample testing, and made numerous revisions and improvements. Summary of the Invention

[0005] This disclosure provides a variable pitch motor structure for a blow molding machine, which utilizes magnetic levitation technology to quickly and accurately transport preforms, thereby reducing wear and efficiently and rapidly changing its pitch.

[0006] Technical characteristics of the problem-solving process:

[0007] This disclosure provides a variable pitch motor structure for a blow molding machine, which includes a variable pitch conveyor. The variable pitch conveyor has a magnetic levitation track and multiple clamps. Each clamp is provided with multiple magnetic elements that cooperate with the magnetic levitation track. The clamps are levitated and moved by magnetic force, thereby adjusting the spacing between the multiple clamps. Each clamp is provided with a chuck to hold multiple preforms. The magnetic levitation track controls the movement of the multiple clamps and widens the spacing between them.

[0008] Furthermore, a heating device conveys and heats the preform, multiple preforms are clamped by the chucks of the clamps, the magnetic levitation track controls the movement of the multiple clamps and widens the spacing between them, and then the preforms are placed on a blow molding die and the chucks are released to complete the conveying.

[0009] Furthermore, the clamp is provided with a magnetic control rod, and the variable pitch conveyor is provided with multiple magnetic control devices. When the magnetic control device is attracted to the magnetic control rod, it drives the clamp to close; when the magnetic control device is repelled by the magnetic control rod, it drives the clamp to open.

[0010] Alternatively, the magnetic levitation track is linear, and the magnetic levitation track controls the reciprocating movement of the clamp to hold and move the preform.

[0011] Alternatively, the magnetic levitation track is circular, which controls the clamp to move in a circular motion to hold and move the preform.

[0012] Preferably, the bottom of the clamp is provided with multiple guide wheels, and the variable pitch conveyor is provided with multiple positioning posts. The guide wheels rotate on the positioning posts to help the clamp be positioned when it moves.

[0013] The primary objective of this disclosure is to widen the spacing of the preforms, which were originally heated and densely conveyed on the heating device, by having them clamped by the clamps and then moving the clamps via the magnetic levitation track to adjust their spacing, and then placing the preforms on the blow molding die for subsequent blow molding processes. This widens the spacing of the preforms, and the variable pitch conveyor makes the transport and adjustment of the preform pitch faster, more convenient, and more efficient.

[0014] The second primary objective of this disclosure is that by using the magnetic levitation track in conjunction with the magnetic components of the clamp to move in a magnetic levitation manner and making its pitch variable, the preform can be transported stably, quickly, accurately, efficiently and with a variable pitch, while reducing the impact of friction, reducing energy consumption, and thus improving product quality.

[0015] Other objectives, advantages, and novelty of this disclosure will be further illustrated by the following detailed description and the accompanying drawings. Attached Figure Description

[0016] Figure 1 This is a top view of the published document;

[0017] Figure 2 This is a detailed, enlarged top-down view of the publicly available document;

[0018] Figure 3 This is a schematic diagram of the fixture holding the preform on the heating device disclosed herein;

[0019] Figure 4 This is a schematic diagram of the fixture used in this disclosure holding the preform;

[0020] Figure 5 This is a side cross-sectional view of the preform being held in the position disclosed in this invention;

[0021] Figure 6 This is a front cross-sectional view of the preform being held in a clamping position as disclosed in this publication;

[0022] Figure 7 This is a schematic diagram of the movement of the fixture disclosed herein;

[0023] Figure 8 This is a schematic diagram of the preform placed in the blow molding die from a top view.

[0024] Figure 9 This is a schematic diagram of the preform placed in the blow molding die from a side view.

[0025] Figure 10 This is a top view of another embodiment of this disclosure;

[0026] Figure 11 This is a side cross-sectional view of the preform clamping state according to another embodiment of this disclosure.

[0027] In the accompanying drawings, the meanings of the reference numerals are as follows:

[0028] 10-Variable pitch transport aircraft;

[0029] 11-Magnetic levitation track;

[0030] 12-Clamp;

[0031] 121-Magnetic component;

[0032] 122-Clamping head;

[0033] 123 - Magnetic control rod;

[0034] 124-Guide wheel;

[0035] 13-Magnetic control;

[0036] 14-Location pin;

[0037] 20 - Heating device;

[0038] 30-Preform;

[0039] 40 - Blow molding die. Detailed Implementation

[0040] To provide a better understanding of the purpose, features, and effects of this disclosure, the following detailed description is provided in conjunction with the accompanying drawings:

[0041] like Figure 1 and Figure 2 As shown, this disclosure provides a variable pitch motor structure for a blow molding machine, which includes a variable pitch conveyor 10. The variable pitch conveyor 10 has a magnetic levitation track 11 and multiple clamps 12. Each clamp 12 is equipped with multiple magnetic elements 121 that cooperate with the magnetic levitation track 11. The clamp 12 is levitated and moved by magnetic force, thereby adjusting the spacing between the clamps 12. Figure 3 and Figure 4 As shown, the clamp 12 is provided with a chuck 122, which clamps multiple preforms 30, such as... Figures 5 to 9As shown, the magnetic levitation track 11 controls the movement of multiple clamps 12 and widens the spacing between them.

[0042] like Figures 1 to 9 As shown, this disclosure provides a variable pitch motor structure for a blow molding machine, wherein a heating device 20 conveys and heats the preform 30, multiple preforms 30 are clamped by the chuck 122 of the clamp 12, the magnetic levitation track 11 controls the movement of the multiple clamps 12 and widens the spacing between them, and then the preform 30 is placed on a blow molding die 40 and the chuck 122 is released to complete the conveying.

[0043] With the above structure, the preform 30, which was originally heated and densely conveyed on the heating device 20, is clamped by the clamp 12. The clamp 12 is then moved via the magnetic levitation track 11 and its spacing is adjusted to widen the spacing of the clamp 12. The preform 30 is then placed on the blow molding die 40 for subsequent blow molding processes. This widens the spacing of the preform 30. The variable pitch conveyor 10 makes the transportation and changing of the preform 30 pitch faster, more convenient and more efficient.

[0044] Furthermore, by using the magnetic levitation track 11 in conjunction with the magnetic component 121 of the clamp 12 to move in a magnetic levitation manner and making its pitch variable, the preform 30 can be transported stably, quickly, accurately, efficiently and with a variable pitch, while reducing the influence of friction and reducing energy consumption, thereby improving product quality.

[0045] like Figure 2 and Figure 3 As shown, this disclosure provides a variable pitch motor structure for a blow molding machine, wherein the clamp 12 is provided with a magnetic control rod 123, and the variable pitch conveyor 10 is provided with a plurality of magnetic control units 13. When the magnetic control unit 13 attracts the magnetic control rod 123, it drives the chuck 122 to close; when the magnetic control unit 13 repels the magnetic control rod 123, it drives the chuck 122 to open, thereby performing clamping and releasing actions with the chuck 122 of the clamp 12.

[0046] like Figure 5 and Figure 6 As shown, this disclosure provides a variable pitch motor structure for a blow molding machine, wherein the bottom of the clamp 12 is provided with a plurality of guide wheels 124, and the variable pitch conveyor 10 is provided with a plurality of positioning posts 14. The guide wheels 124 rotate on the positioning posts 14 to help the clamp 12 to be positioned when moving.

[0047] This disclosure provides a variable pitch motor structure for a blow molding machine, wherein the clamp 12 has four guide wheels 124 arranged in two rows and two columns, and the guide wheels 124 rotate on the positioning post 14 to allow the clamp 12 to move stably in the front, back and left and right.

[0048] like Figure 7 As shown, this disclosure provides a variable pitch motor structure for a blow molding machine, wherein the magnetic levitation track 11 is linear, and the magnetic levitation track 11 controls the clamp 12 to reciprocate to clamp and move the preform 30.

[0049] like Figure 10 As shown is another embodiment of the present disclosure, the present disclosure provides a variable pitch motor structure for a blow molding machine, wherein the magnetic levitation track 11 is in the shape of a ring, and the magnetic levitation track 11 controls the clamp 12 to move in a circular motion to clamp and move the preform 30.

[0050] like Figure 8 and Figure 9 As shown, this disclosure provides a variable pitch motor structure for a blow molding machine, wherein the blow molding die 40 actively approaches the clamp 12 to place the preform 30 on the blow molding die 40.

[0051] like Figure 5 As shown, this disclosure provides a variable pitch motor structure for a blow molding machine, wherein the magnetic levitation track 11 is composed of multiple permanent magnets and the magnetic component 121 of the clamp 12 is an electromagnet; as Figure 11 As shown, this is another embodiment of the present disclosure. Alternatively, the magnetic levitation track 11 is composed of multiple electromagnets and the magnetic component 121 of the clamp 12 is a permanent magnet; or, the magnetic levitation track 11 is composed of multiple electromagnets and the magnetic component 121 of the clamp 12 is an electromagnet, thereby achieving the effect of the magnetic component 121 cooperating with the magnetic levitation track 11 to control the levitation and movement of each clamp 12 through magnetic force.

[0052] The above description is merely a preferred embodiment of this disclosure and should not be construed as limiting the scope of protection of this disclosure; that is, any equivalent changes and modifications made in accordance with the scope of protection of this disclosure should still fall within the scope of protection covered by this disclosure.

Claims

1. A variable pitch motor structure for a blow molding machine, comprising a variable pitch conveyor, characterized in that: The variable-pitch conveyor has a magnetic levitation track and multiple clamps. Each clamp is equipped with multiple magnetic components that cooperate with the magnetic levitation track. The clamps are levitated and moved by magnetic force, thereby adjusting the spacing between the clamps. Each clamp is equipped with a chuck to hold multiple preforms. The magnetic levitation track controls the movement of the clamps and widens the spacing between them.

2. The variable pitch motor structure for a blow molding machine according to claim 1, characterized in that, A heating device conveys and heats the preform, multiple preforms are clamped by the chucks of the clamps, the magnetic levitation track controls the movement of the multiple clamps and widens the spacing between them, the preforms are then placed on a blow molding die and the chucks are released to complete the conveying.

3. The variable pitch motor structure for a blow molding machine according to claim 1 or 2, characterized in that, The clamp is equipped with a magnetic control rod, and the variable pitch conveyor is equipped with multiple magnetic control devices. When the magnetic control device is attracted to the magnetic control rod, it drives the clamp to close; when the magnetic control device is repelled by the magnetic control rod, it drives the clamp to open.

4. The variable pitch motor structure for a blow molding machine according to claim 1 or 2, characterized in that, The fixture has multiple guide wheels at its bottom, and the variable-pitch conveyor has multiple positioning posts. The guide wheels rotate on the positioning posts to help position the fixture when it moves.

5. The variable pitch motor structure for a blow molding machine according to claim 4, characterized in that, The clamp has four guide wheels arranged in two rows and two columns. The guide wheels rotate on the positioning post, allowing the clamp to move stably forward, backward, left, and right.

6. The variable pitch motor structure for a blow molding machine according to claim 1 or 2, characterized in that, The magnetic levitation track is in a straight line, and the magnetic levitation track controls the reciprocating movement of the clamp to hold and move the preform.

7. The variable pitch motor structure for a blow molding machine according to claim 1 or 2, characterized in that, The magnetic levitation track is circular, and the magnetic levitation track controls the clamp to move in a circular motion to clamp and move the preform.

8. The variable pitch motor structure for a blow molding machine according to claim 1 or 2, characterized in that, The magnetic levitation track is composed of multiple permanent magnets, and the magnetic component of the clamp is an electromagnet.

9. The variable pitch motor structure for a blow molding machine according to claim 1 or 2, characterized in that, The magnetic levitation track is composed of multiple electromagnets, and the magnetic component of the clamp is a permanent magnet.

10. The variable pitch motor structure for a blow molding machine according to claim 1 or 2, characterized in that, The magnetic levitation track is composed of multiple electromagnets, and the magnetic component of the clamp is an electromagnet.