A star wheel structure for a blow molding machine

Abstract

This utility model relates to the technical field of blow molding machine accessories and discloses a star wheel structure for a blow molding machine, including a worktable, a work turntable, a motor, a limiting block, several transmission wheels, and a transmission shaft. A rotating shaft is located in the center of the work turntable and is fixedly connected to the transmission shaft. A preform clamp is provided on the work turntable, and a guide rail is provided on the outer side of the work turntable. The transmission wheels are rotatably connected to the work turntable, and the transmission shaft is fixedly sleeved around the outside of the transmission wheels. Adjacent transmission wheels mesh with each other. The worktable is rotatably connected to two assembly shafts at intervals via connecting seats. The limiting block is fixedly connected to the bottom end of the assembly shaft, and an inverted T-shaped column slides through the limiting block. Two positioning columns are fixedly connected at intervals to the bottom end of the worktable. This utility model effectively eliminates the limitation of the transmission wheels, facilitating quick assembly and disassembly of the motor at the bottom end of the worktable, thereby facilitating the replacement of damaged motors.

Description

Technical Field

[0001] This utility model relates to the technical field of blow molding machine accessories, and more specifically, to a star wheel structure for a blow molding machine. Background Technology

[0002] A blow molding machine is a machine that blows plastic granules or preforms into bottles using certain processes. Its basic principle is to use plastic granules (softened into liquid) or preforms to form hollow containers through blow molding. Blow molding machines are widely used in the beverage, pharmaceutical, cosmetic, food and chemical industries. Blow molding machines generally adopt an assembly line operation mode. Among them, the star wheel mechanism is most common in the preform feeding mechanism. The preform is transported to the preform star wheel through the preform guide rail. Driven by the preform star wheel, the preform enters the sprocket conveying mechanism and then enters the heating mechanism to complete the heating of the preform.

[0003] A search revealed a star wheel structure for a blow molding machine disclosed in Chinese Patent Publication No. CN 207509716 U. This structure utilizes a motor to rotate the working turntable shaft. A sliding baffle is located at the upper end of the turntable. During rotation, the preform enters a groove between the guide rail and the sliding baffle, serving as the bottle outlet channel. The preform then enters the chain via a clamp moving along the groove. The structure is compact, rotates smoothly, reduces manual labor, and improves work efficiency. However, because the motor shaft is directly connected to the transmission wheel for transmission, the motor is restricted from being quickly disassembled and reassembled at the lower end of the worktable, making replacement of damaged motors inconvenient and affecting the ease of maintenance of the star wheel structure. Therefore, this invention designs a star wheel structure for a blow molding machine to solve these problems. Utility Model Content

[0004] The purpose of this invention is to provide a star wheel structure for a blow molding machine to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A star wheel structure for a blow molding machine includes a worktable, a turntable, a motor, a limit stop, several transmission wheels, and a transmission shaft. A rotating shaft is located in the center of the turntable and is fixedly connected to the transmission shaft. A preform clamp is mounted on the turntable. A guide rail is provided on the outer side of the turntable. The transmission wheels are rotatably connected to the turntable. The transmission shaft is fixedly sleeved around the transmission wheels. Adjacent transmission wheels mesh with each other. The worktable is rotatably connected to two assembly shafts at intervals via connecting seats. The limit stop is fixedly connected to the bottom end of the assembly shaft. An inverted T-shaped post slides through the stop block, and a spring is fixedly connected between the stop block and the inverted T-shaped post. Two positioning posts are fixedly connected at intervals at the bottom of the worktable. Four mounting holes are spaced apart on the end face of the motor. The positioning posts and the inverted T-shaped posts are adapted to the mounting holes. A motor spindle is provided at the drive end of the motor. An opening is provided on the bottom surface of the worktable. A sliding groove adapted to the end of the motor spindle is provided at the bottom of the transmission shaft. An anti-torsion protrusion is provided on the side of the motor. An anti-torsion groove adapted to the anti-torsion protrusion is provided on the inner side of the sliding groove.

[0007] As a preferred embodiment of this utility model, the number of anti-torsion protrusions is two, and the two anti-torsion protrusions are symmetrically distributed on both sides.

[0008] As a preferred technical solution of this utility model, the motor spindle and the anti-torsion protrusion are integrally formed.

[0009] As a preferred embodiment of this utility model, a handle is fixedly connected to the bottom of the inverted T-shaped column, and the cross-sectional shape of the handle is U-shaped.

[0010] As a preferred embodiment of this utility model, the bottom surface of the workbench is provided with mounting holes, which are distributed on both sides of the bottom surface of the workbench.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] This invention extends the motor spindle into the worktable through a through-hole, allowing the end of the motor spindle to be inserted into a sliding groove and the anti-torsion protrusion into an anti-torsion groove. This ensures that the motor can drive the motor spindle and transmission shaft to rotate synchronously. The positioning pin is inserted into the corresponding mounting hole on the motor end face. Using a handle, the inverted T-shaped pin is pulled down into the limit stop, and the spring is stretched, causing the limit stop to rotate along the connecting seat at the bottom of the worktable. This makes the motor end face abut against the worktable and the limit stop, and the spring drives the inverted T-shaped pin to be inserted into the corresponding mounting hole on the motor end face. If the motor is damaged and needs to be replaced, it effectively eliminates the restriction of the transmission wheel, making it easy to quickly disassemble and assemble the motor at the bottom of the worktable. This facilitates the replacement of the damaged motor and improves the convenience of later maintenance of the star wheel structure of the blow molding machine. Attached Figure Description

[0013] Figure 1 This is a first three-dimensional structural diagram of the star wheel structure of a blow molding machine according to the present invention;

[0014] Figure 2 This is a second three-dimensional structural diagram of the star wheel structure of a blow molding machine according to the present invention;

[0015] Figure 3 This is a three-dimensional structural diagram of the star wheel structure of a blow molding machine of the present invention after the motor has been disassembled and removed;

[0016] Figure 4 This is a cross-sectional view of the star wheel structure of a blow molding machine according to the present invention;

[0017] Figure 5 for Figure 4 A magnified structural diagram of part A in the middle;

[0018] Figure 6 This is a three-dimensional structural diagram of the motor in the star wheel structure of a blow molding machine according to the present invention.

[0019] In the diagram: 1. Workbench; 101. Connecting seat; 102. Assembly shaft; 103. Positioning post; 104. Through port; 105. Mounting hole; 2. Work turntable; 3. Rotating shaft; 4. Preform fixture; 5. Motor; 501. Assembly hole; 502. Motor spindle; 503. Anti-torsion protrusion; 6. Guide rail; 7. Transmission wheel; 8. Limiting block; 801. Inverted T-shaped post; 802. Spring; 803. Handle; 9. Transmission shaft; 901. Slide groove; 902. Anti-torsion groove. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] like Figures 1 to 6As shown, this utility model provides a star wheel structure for a blow molding machine, including a worktable 1, a working turntable 2, a motor 5, a limiting block 8, several transmission wheels 7, and a transmission shaft 9. A rotating shaft 3 is located in the center of the working turntable 2 and is fixedly connected to the transmission shaft 9. A preform clamp 4 is provided on the working turntable 2, and a guide rail 6 is provided on the outer side of the working turntable 2. The transmission wheels 7 are rotatably connected to the working turntable 2, and the transmission shaft 9 is fixedly sleeved on the outside of the transmission wheels 7. Adjacent transmission wheels 7 mesh with each other. The worktable 1 is rotatably connected to two assembly shafts 102 at intervals via a connecting seat 101. The limiting block 8 is fixedly connected to the bottom end of the assembly shaft 102, and an inverted T-shaped post 801 slides through the limiting block 8. A spring 802 is fixedly connected between the limiting block 8 and the inverted T-shaped post 801. The bottom end of the worktable 1 is fixedly connected at intervals... Two positioning posts 103 are connected. The end face of the motor 5 is provided with four mounting holes 501 spaced apart. The positioning posts 103 and the inverted T-shaped posts 801 are adapted to the mounting holes 501. The drive end of the motor 5 is provided with a motor spindle 502. The bottom surface of the worktable 1 is provided with a through-hole 104. The motor spindle 502 extends into the worktable 1 through the through-hole 104. The bottom of a transmission shaft 9 is provided with a slide groove 901 adapted to the end of the motor spindle 502, so that the end of the motor spindle 502 can be inserted into the slide groove 901. The side of the motor 5 is provided with an anti-torsion protrusion 503. The inner side of the slide groove 901 is provided with an anti-torsion groove 902 adapted to the anti-torsion protrusion 503, so that the anti-torsion protrusion 503 can be inserted into the anti-torsion groove 902, ensuring that the motor 5 can drive the motor spindle 502 and the transmission shaft 9 to rotate synchronously.

[0022] Among them, such as Figure 5 As shown, there are two anti-torsion protrusions 503, and the two anti-torsion protrusions 503 are symmetrically distributed on both sides.

[0023] Among them, such as Figure 5 As shown, the motor spindle 502 and the anti-torsion protrusion 503 are integrally formed, which achieves the purpose of ensuring the overall structural stability of the motor spindle 502 and the anti-torsion protrusion 503.

[0024] Among them, such as Figure 3 As shown, a handle 803 is fixedly connected to the bottom of the inverted T-shaped column 801. The cross-sectional shape of the handle 803 is U-shaped, and the handle 803 makes it easy to pull the inverted T-shaped column 801 downward.

[0025] Among them, such as Figure 3 As shown, mounting holes 105 are provided on the bottom surface of the workbench 1. The mounting holes 105 are distributed on both sides of the bottom surface of the workbench 1, so as to achieve the purpose of stable installation of the workbench 1.

[0026] The working principle of this utility model:

[0027] If motor 5 is damaged and needs to be replaced during use, use handle 803 to pull the inverted T-shaped post 801 downwards. The inverted T-shaped post 801 will disengage from the mounting hole 501 on the end face of motor 5. Rotate the limit stop 8 along the connecting seat 101 at the bottom of the worktable 1 until the limit stop 8 disengages from the bottom of the end face of motor 5. The end of motor spindle 502 will slide down along slide groove 901, allowing motor 5 to be quickly disassembled from the bottom of worktable 1. If it is necessary to install the replaced motor 5, extend motor spindle 502 into worktable 1 through through port 104, so that the end of motor spindle 502 is inserted into slide groove 901, and anti-torsion protrusion 503 is inserted into anti-torsion groove 901. Within 2, ensure that the motor 5 can drive the motor spindle 502 and the transmission shaft 9 to rotate synchronously. Insert the positioning pin 103 into the corresponding mounting hole 501 on the end face of the motor 5. Use the handle 803 to pull the inverted T-shaped pin 801 down into the limit block 8. The spring 802 will be stretched, and the limit block 8 will rotate along the connecting seat 101 at the bottom of the worktable 1, so that the end face of the motor 5 abuts against the worktable 1 and the limit block 8. Release the handle 803, and use the spring 802 to drive the inverted T-shaped pin 801 into the corresponding mounting hole 501 on the end face of the motor 5. The motor 5 can be quickly installed at the bottom of the worktable 1, which facilitates the replacement of damaged motor 5.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A starwheel structure of a bottle blowing machine, characterized by: It includes a worktable (1), a turntable (2), a motor (5), a limit stop (8), several transmission wheels (7) and a transmission shaft (9); The working turntable (2) has a rotating shaft (3) in the middle, which is fixedly connected to the transmission shaft (9). The working turntable (2) has a preform clamp (4), and the working turntable (2) has a guide rail (6) on its outer side. The transmission wheel (7) is rotatably connected to the working turntable (2). The transmission shaft (9) is fixedly sleeved on the outside of the transmission wheel (7). Adjacent transmission wheels (7) mesh with each other. The worktable (1) is rotatably connected to two assembly shafts (102) at intervals through a connecting seat (101). The limiting block (8) is fixedly connected to the bottom end of the assembly shaft (102). An inverted T-shaped column (801) slides through the limiting block (8). A spring (802) is fixedly connected between the limiting block (8) and the inverted T-shaped column (801). The bottom end of the workbench (1) is fixedly connected with two positioning columns (103) at intervals. The end face of the motor (5) is provided with four assembly holes (501) at intervals. The positioning columns (103) and the inverted T-shaped columns (801) are adapted to the assembly holes (501). The drive end of the motor (5) is provided with a motor spindle (502). The bottom surface of the workbench (1) is provided with a through opening (104). The bottom of the transmission shaft (9) is provided with a slide groove (901) adapted to the end of the motor spindle (502). The side of the motor (5) is provided with an anti-torsion protrusion (503). The inner side of the slide groove (901) is provided with an anti-torsion groove (902) adapted to the anti-torsion protrusion (503).

2. A starwheel structure of a bottle blowing machine according to claim 1, characterized in that: The number of anti-torsion protrusions (503) is two, and the two anti-torsion protrusions (503) are symmetrically distributed on both sides.

3. A starwheel structure of a bottle blowing machine according to claim 2, characterized in that: The motor spindle (502) and the anti-torsion protrusion (503) are integrally formed.

4. A starwheel structure of a bottle blowing machine according to claim 1, characterized in that: The bottom of the inverted T-shaped column (801) is fixedly connected to a handle (803), and the cross-sectional shape of the handle (803) is U-shaped.

5. A starwheel structure of a bottle blowing machine according to claim 1, characterized in that: The bottom surface of the workbench (1) is provided with mounting holes (105), which are distributed on both sides of the bottom surface of the workbench (1).

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