A rotary automatic preform feeding mechanism for a bottle blowing machine

Abstract

The utility model belongs to the technical field of plastics machinery, specifically relates to a kind of automatic blank feeding mechanism of rotary type of bottle blowing machine, it is characterized by: including rotary type blank receiving mechanism and blank gripping manipulator, the rotary type blank receiving mechanism includes blank receiving base, and blank receiving base is rotatably provided blank receiving base plate, blank receiving seat is set on blank receiving base plate, and blank receiving seat receives plastic bottle blank, and blank receiving seat side is provided with blank pushing assembly, and the other side of blank receiving seat is provided with photosensor;The blank gripping manipulator grips the plastic bottle blank on blank receiving seat, and is driven by sliding overturning structure, and the plastic bottle blank gripped is inserted to the bottle blank support seat of bottle blowing machine.The single gripping blank of manipulator can effectively avoid the scratch of plastic bottle blank due to collision and friction in blank feeding process, prevent the rupture of plastic bottle blank in stretch blow molding process, improve product yield and production efficiency, especially suitable for the blank feeding of plastic bottle blank without bottle blank support ring.

Description

Technical Field

[0001] This utility model belongs to the field of plastic machinery, and specifically relates to a rotary automatic preform loading mechanism for a blow molding machine. Background Technology

[0002] The structure of a blow molding machine mainly consists of a preform conveying mechanism, a heating device, and a stretch blow molding mechanism. During production, the preform loading mechanism feeds the injection-molded plastic preforms into the preform conveying mechanism, which then carries the preforms through the heating device and into the stretch blow molding die of the stretch blow molding mechanism for blow molding. Currently, most preform loading mechanisms use a slide structure, including a preform sorting mechanism and an inclined slide. The preform sorting mechanism arranges the plastic preforms in the sorting box and sends them into the slide. The plastic preforms then slide down the slide from top to bottom and are caught by a preform receiving device installed next to the preform conveying mechanism, before being inserted into the preform support seat of the preform conveying mechanism.

[0003] When producing high-end PET bottles, such as beer bottles, which require a smooth surface finish, a slide-type preform loading mechanism is used. During the free slide of the plastic preforms, adjacent preforms inevitably collide and rub against each other, causing minor scratches on the surface. Beer kegs have a large volume, requiring a longer stretching of the preforms during the blow molding process. During this process, these minor scratches can cause the preforms to crack during stretching and blowing, affecting the product yield. Furthermore, it necessitates machine shutdown for cleaning, severely impacting production efficiency.

[0004] At the same time, products without preform support rings or with excessively small preform support rings cannot be fed onto the preform via the slide. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a rotary automatic preform loading mechanism for blow molding machines. During preform loading, the bottle mouth can be automatically rotated and adjusted, making it easier for the robot arm to grip the bottle individually, avoiding collisions and friction, and improving product yield and production efficiency.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A rotary automatic preform loading mechanism for a blow molding machine is characterized by comprising a rotary preform receiving mechanism and a preform clamping robot. The rotary preform receiving mechanism includes a preform receiving base, a preform receiving bottom plate rotatably mounted on the preform receiving base, a preform receiving seat mounted on the preform receiving bottom plate, the preform receiving seat receiving a plastic preform, a preform pushing assembly mounted on one side of the preform receiving seat, and a photosensitive sensor mounted on the other side of the preform receiving seat. The preform clamping robot clamps the plastic preform on the preform receiving seat and, driven by a sliding flipping structure, inserts the clamped plastic preform into the preform support seat of the blow molding machine.

[0007] Furthermore, a rotary motor is installed on the blank receiving base, and the motor shaft of the rotary motor is connected to the blank receiving base plate.

[0008] Furthermore, the billet pushing assembly includes a billet pushing cylinder, and the front end of the cylinder rod of the billet pushing cylinder is connected to the billet pushing plate.

[0009] Furthermore, the rotary preform receiving mechanism is installed at the end of the preform handling mechanism of the blow molding machine, and a support connecting plate is installed on both sides of the preform receiving base of the rotary preform receiving mechanism. The support connecting plate is fixedly connected to the end frame of the preform handling mechanism.

[0010] Furthermore, the sliding flipping structure includes a crossbeam fixed on the blow molding machine frame, a horizontal translation component on the crossbeam, a vertical translation component on the horizontal translation component, a vertical beam on the vertical translation component, a flipping component at the lower end of the vertical beam, and the blank clamping robot connected to the flipping component.

[0011] Furthermore, the lateral translation component includes a lateral translation guide rail on the crossbeam, a lateral translation slider slidably mounted on the lateral translation guide rail, and a lateral translation base plate mounted on the lateral translation slider. The vertical translation component includes a vertical translation slider mounted on the lateral translation base plate. A vertical translation guide rail is mounted on the bottom surface of the vertical beam, and the vertical translation guide rail cooperates with the vertical translation slider. The flipping component includes a flipping cylinder fixed to the lower end of the vertical beam. The cylinder rod of the flipping cylinder is connected to a rack. A flipping connecting block is mounted on the blank clamping robot arm, and a gear is mounted on the flipping connecting block. The gear meshes with the rack.

[0012] Furthermore, it also includes a preform pressing mechanism installed next to the preform support. The preform pressing mechanism includes a preform pressing bracket, a preform pressing cylinder installed on the preform pressing bracket, a preform pressing rod connected below the preform pressing cylinder, a preform pressing seat installed on the preform pressing rod, and the preform pressing seat corresponding to the plastic preform inserted on the preform support.

[0013] This utility model discloses a rotary automatic preform loading mechanism for a blow molding machine, which has the following advantages compared with the existing slide preform loading mechanism: 1. Using a robotic arm to individually grip the preform can effectively avoid scratches caused by collisions and friction during the preform loading process, prevent the preform from breaking during stretch blow molding, improve product yield and production efficiency, and is especially suitable for preform loading of plastic preforms without preform support rings. Second, during the loading process, the orientation of the plastic bottle preform can be sensed by a photosensitive sensor, and the receiving base can be rotated in time by a rotary motor to adjust the orientation of the plastic bottle preform, making it easier for the clamping robot to pick up the plastic bottle preform. 3. When the plastic preform falls onto the receiving base, the falling position will be slightly offset. The position of the plastic preform can be adjusted by pushing the preform assembly, so that the clamping robot can accurately clamp the plastic preform. 4. When the plastic preform is inserted into the preform support, the preform pressing mechanism presses the plastic preform slightly to ensure that it is securely inserted into the preform support, preventing the plastic preform from falling off during the heating and conveying process of the blow molding machine. Attached Figure Description

[0014] Figure 1 This is an assembly diagram of a rotary automatic preform loading mechanism for a blow molding machine according to this utility model. Figure 2 This is a three-dimensional schematic diagram of the rotary blank receiving mechanism of this utility model; Figure 3 This is a schematic diagram of the sliding and flipping structure of the blank clamping robot of this utility model; Figure 4 This is a schematic diagram of the blank pressing mechanism of this utility model. Detailed Implementation

[0015] The present invention will be described in detail below with reference to specific implementation examples. The following implementation examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any way.

[0016] like Figure 1 — Figure 4 As shown, this utility model relates to a rotary automatic preform loading mechanism for a blow molding machine, including a rotary preform receiving mechanism 01 and a preform clamping robot 02. The rotary preform receiving mechanism 01 is disposed at the end of the preform sorting mechanism 05 of the blow molding machine. Support connecting plates 8 are provided on both sides of the preform receiving base 1 of the rotary preform receiving mechanism 01, and the support connecting plates 8 are fixedly connected to the end frame of the preform sorting mechanism 05. The preform sorting mechanism 05 is existing technology and generally consists of a preform sorting box and a preform conveyor belt. The rotary preform receiving mechanism 01 includes a preform receiving base 1, on which a preform receiving bottom plate 2 is rotatably disposed. A receiving base 3 is provided to receive the plastic preform 03. A pushing component is provided on one side of the receiving base 3, and a photosensitive sensor 4 is provided on the other side of the receiving base 3. The clamping robot 02 clamps the plastic preform 03 on the receiving base 3 and is driven by the sliding flipping structure 06 to insert the clamped plastic preform 03 into the preform support base 04 of the blow molding machine. The sliding flipping structure 06 is fixed on the blow molding machine frame. A rotary motor 5 is provided on the receiving base 1. The motor shaft of the rotary motor 5 is connected to the receiving base plate 2. The pushing component includes a pushing cylinder 6. The front end of the cylinder rod of the pushing cylinder 6 is connected to the pushing plate 7.

[0017] During operation, the preform sorting mechanism 05 first arranges the plastic preform 03 and conveys it to the receiving base 1. Then, the sliding flipping structure 06 drives the clamping robot 02 to move above the plastic preform 03, lowers and clamps the plastic preform 03, and then inserts the clamped plastic preform 03 into the preform support 04 of the blow molding machine, completing the loading process. In the actual clamping process, the clamping robot 02 clamps the bottle mouth of the plastic preform 03. However, the bottle mouths of the plastic preforms conveyed from the sorting mechanism 05 are not aligned. Therefore, when the photosensitive sensor 4 detects an incorrect bottle mouth orientation, it sends a signal to the control system. The control system then controls the rotary motor 5 to rotate the receiving base 2, aligning the bottle mouth of the plastic preform 03 with the clamping robot 02, facilitating the clamping robot 02 to clamp the plastic preform 03. At the same time, the pushing cylinder 6 pushes the pushing plate 7 to fine-tune the position of the plastic preform 03, making the clamping robot 02 clamp the plastic preform more accurately.

[0018] Furthermore, the sliding flipping structure 06 includes a crossbeam 10 fixed on the blow molding machine frame, a horizontal translation component is provided on the crossbeam, a vertical translation component is provided on the horizontal translation component, a vertical beam 13 is provided on the vertical translation component, a flipping component is provided at the lower end of the vertical beam 13, and the clamping manipulator 02 is connected to the flipping component. The lateral translation component includes a lateral translation guide rail 15 on the crossbeam 10, a lateral translation slider 16 slidably mounted on the lateral translation guide rail, and a lateral translation base plate 17 mounted on the lateral translation slider 16. The vertical translation component includes a vertical translation slider 18 mounted on the lateral translation base plate 17. A vertical translation guide rail 19 is mounted on the bottom surface of the vertical beam 13, and the vertical translation guide rail 19 cooperates with the vertical translation slider 18. The flipping component includes a flipping cylinder 20 fixed to the lower end of the vertical beam 13. The cylinder rod of the flipping cylinder is connected to a rack 21. A flipping connecting block 22 is mounted on the clamping manipulator 02, and a gear 23 is mounted on the flipping connecting block. The gear 23 meshes with the rack 21.

[0019] During operation, the tilting cylinder 20 drives the rack 21, which meshes with the gear 23, causing the clamping manipulator 02 to tilt. The power source (motor or cylinder) drives the crossbeam 10 to move laterally (back and forth) on the transverse translation guide rail 15. At this time, the vertical beam 13 moves laterally as well. After reaching the set position, the power source (motor or cylinder) drives the vertical beam 13 to move vertically (up and down) on the vertical translation slider 18. After the vertical movement reaches the set position, the plastic bottle preform 03 is clamped.

[0020] Furthermore, a preform pressing mechanism 07 is provided next to the preform support 04. The preform pressing mechanism 07 includes a preform pressing bracket 25, a preform pressing cylinder 26 mounted on the preform pressing bracket, a preform pressing rod 27 connected below the preform pressing cylinder, and a preform pressing seat 28 mounted on the preform pressing rod. The preform pressing seat corresponds to the plastic preform 03 inserted into the preform support 04. After the plastic preform 03 is inserted into the preform support 04, it is slightly pressed down by the preform pressing plate to prevent the plastic preform 03 from falling off the preform support, thus making the conveying operation more stable.

[0021] The above specific embodiments are used to explain and illustrate the present utility model, and are not intended to limit the present utility model. Any modifications and changes made to the present utility model within the spirit and scope of the claims shall fall within the protection scope of the present utility model.

Claims

1. A rotary automatic preform loading mechanism for a blow molding machine, characterized in that: The device includes a rotary blank receiving mechanism (01) and a blank clamping robot (02). The rotary blank receiving mechanism (01) includes a blank receiving base (1), a blank receiving bottom plate (2) is rotatably arranged on the blank receiving base (1), a blank receiving seat (3) is arranged on the blank receiving bottom plate, the blank receiving seat (3) receives the plastic bottle blank (03), a blank pushing assembly is arranged on one side of the blank receiving seat (3), and a photosensitive sensor (4) is arranged on the other side of the blank receiving seat (3). The blank clamping robot (02) clamps the plastic bottle blank (03) on the blank receiving seat (3) and is driven by a sliding flipping structure (06) to insert the clamped plastic bottle blank (03) into the bottle blank support seat (04) of the blow molding machine.

2. The rotary automatic preform loading mechanism of a blow molding machine as described in claim 1, characterized in that... A rotary motor (5) is installed on the blank receiving base (1), and the motor shaft of the rotary motor (5) is connected to the blank receiving base plate (2).

3. The rotary automatic preform loading mechanism of a blow molding machine as described in claim 1, characterized in that... The billet pushing assembly includes a billet pushing cylinder (6), and the front end of the cylinder rod of the billet pushing cylinder (6) is connected to the billet pushing plate (7).

4. The rotary automatic preform loading mechanism of a blow molding machine as described in claim 1, characterized in that... The rotary blank receiving mechanism (01) is set at the end of the blank handling mechanism (05) of the blow molding machine. Support connecting plates (8) are set on both sides of the blank receiving base (1) of the rotary blank receiving mechanism (01), and the support connecting plates (8) are fixedly connected to the end frame of the blank handling mechanism (05).

5. The rotary automatic preform loading mechanism of a blow molding machine as described in claim 1, characterized in that... The sliding flipping structure (06) includes a crossbeam (10) fixed on the blow molding machine frame, a horizontal translation component is provided on the crossbeam, a vertical translation component is provided on the horizontal translation component, a vertical beam (13) is provided on the vertical translation component, and a flipping component is provided at the lower end of the vertical beam (13). The clamping manipulator (02) is connected to the flipping component.

6. The rotary automatic preform loading mechanism of a blow molding machine as described in claim 5, characterized in that... The lateral translation component includes a lateral translation guide rail (15) set on the crossbeam (10), a lateral translation slider (16) slidably set on the lateral translation guide rail, and a lateral translation base plate (17) set on the lateral translation slider (16). The vertical translation component includes a vertical translation slider (18) set on the lateral translation base plate (17). A vertical translation guide rail (19) is set on the bottom surface of the vertical beam (13). The vertical translation guide rail (19) cooperates with the vertical translation slider (18). The flipping component includes a flipping cylinder (20) fixed at the lower end of the vertical beam (13). The cylinder rod of the flipping cylinder is connected to a rack (21). A flipping connecting block (22) is set on the blank clamping robot (02). A gear (23) is set on the flipping connecting block. The gear (23) meshes with the rack (21).

7. The rotary automatic preform loading mechanism of a blow molding machine as described in claim 1, characterized in that... It also includes a preform pressing mechanism (07) set next to the preform support (04). The preform pressing mechanism includes a preform pressing bracket (25), a preform pressing cylinder (26) set on the preform pressing bracket, a preform pressing rod (27) connected to the preform pressing cylinder, a preform pressing seat (28) set on the preform pressing rod, and the preform pressing seat corresponds to the plastic preform (03) inserted on the preform support (04).

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