Single-servo flashboard type pressurizing bottom die linkage die assembly mechanism

Abstract

A single-servo flashboard type pressurizing bottom die linkage die closing mechanism comprises a bottom plate and a top plate, two fixed die plates are arranged between the bottom plate and the top plate, two sliding movable die plates are arranged on the bottom plate, a pair of corresponding drawing and blowing dies is arranged on the side walls of the two movable die plates, and a bottom die is arranged at the bottom of each drawing and blowing die. An opening and closing mold locking device for driving the movable mold plates to open, close and lock the mold is arranged below the bottom plate, a linkage structure is arranged between the opening and closing mold locking device and the bottom mold, the linkage structure comprises a lifting fixing plate connected below one movable mold plate, a lifting curved groove is formed in the lifting fixing plate, and a bottom mold fixing plate is arranged below the bottom mold; rollers are arranged on the bottom die fixing plate and matched with the lifting curved grooves. According to the scheme, the linkage structure is arranged between the bottom mold and the mold opening, closing and locking device, linkage of mold opening and closing, mold locking and bottom mold demolding is achieved, the servo motor is adopted for driving, the precision is high, the speed is high, and the performance is more stable.

Description

Technical Field

[0001] The utility model relates to a single-servo gate type pressurized bottom mold linkage clamping mechanism, belonging to the field of plastic machinery. Background Art

[0002] A blow molding machine is a common device used to produce hollow plastic containers (such as mineral water bottles, beverage bottles, and oil bottles). It primarily comprises a heating device, a conveying mechanism, and a stretch-blow mechanism. The stretch-blow mechanism houses a stretch-blow mold, which is driven to open and close by a clamping mechanism. Currently, there are numerous technical solutions for clamping mechanisms in blow molding machines, including one that utilizes bidirectional mold opening and closing. For example, Publication No. CN104129068A discloses a "Mold Opening and Closing Device for a Blow Molding Machine." This device utilizes left and right mold opening and closing curved grooves on a drive base to drive the opening and closing of the left and right body molds. As the drive base slides back and forth, the mold opening and closing mating components follow the shapes of the left and right mold opening and closing curves, thereby opening and closing the left and right body molds. The clamping mating components on the left and right locking platens follow the left and right clamping grooves. The positional correspondence between the segments of the left and right mold opening and closing grooves and the segments of the left and right clamping grooves ensures smooth and consistent movement of the blow molding mold. In actual production, there are more and more hollow containers with bottom features. However, this solution does not have an independent bottom mold, cannot achieve automatic demoulding of the bottom mold, and cannot adapt to the requirements of high-speed and stable production. Summary of the Invention

[0003] The purpose of the utility model is to overcome the shortcomings of the existing technology and provide a single servo gate type pressurized bottom mold linkage clamping mechanism with small size, large mold opening stroke, fast running speed, automatic demoulding of the bottom mold, high-speed and stable operation, high efficiency and energy saving.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A single-servo gate-type pressurized bottom mold linkage clamping mechanism includes a bottom plate and a top plate, two fixed fixed mold plates are arranged between the bottom plate and the top plate, two sliding movable mold plates are arranged on the bottom plate, and a corresponding stretch-blow mold is arranged on the side walls of the two movable mold plates. A bottom mold is arranged at the bottom of the stretch-blow mold, and an opening and closing mold-locking device for driving the movable mold plate to open, close and lock the mold is arranged under the bottom plate. A linkage structure is arranged between the opening and closing mold-locking device and the bottom mold, and the linkage structure includes a lifting fixed plate connected under one of the movable mold plates, a lifting curved groove is arranged in the lifting fixed plate, a bottom mold fixing plate is arranged under the bottom mold, and a roller is arranged on the bottom mold fixing plate, and the roller cooperates with the lifting curved groove.

[0006] Furthermore, a guide sleeve is provided on the bottom plate, and a guide column is provided under the bottom mold fixing plate, and the guide column cooperates with the guide sleeve.

[0007] Furthermore, a boosting plate is provided on each of the two fixed mold plates, and a mold locking assembly of the opening and closing mold locking device is provided on the boosting plate.

[0008] This utility model features a single-servo gate-type pressurized bottom mold linkage clamping mechanism. During mold closing, the opening and closing mold clamping device drives the movable mold plate to close the mold, which in turn drives the lifting fixed plate to move. Driven by the lifting curved groove, the rollers drive the bottom mold on the bottom mold fixed plate to rise and mate with the stretch-blow mold. During mold opening, the action is reversed, with the bottom mold descending to release the bottom features of the blow-molded hollow container. Finally, the hollow container is removed by a robot. This solution achieves linkage between the bottom mold and the opening and closing mold clamping device, achieving linkage between mold opening and closing, mold clamping, and bottom mold release. Furthermore, the mechanism is driven by a servo motor, resulting in high precision, high speed, and more stable performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a structural diagram of the utility model;

[0010] Figure 2 It is a three-dimensional schematic diagram of the utility model;

[0011] Figure 3 It is a schematic diagram of the linkage structure of the utility model. DETAILED DESCRIPTION

[0012] The present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0013] Example 1, as Figure 1 — Figure 3 As shown, a single-servo gate-type booster bottom mold linkage clamping mechanism includes a bottom plate 1 and a top plate 2, two fixed fixed mold plates 3 are arranged between the bottom plate and the top plate, two sliding movable mold plates 5 are arranged on the bottom plate, a corresponding stretch-blow mold 6 is arranged on the side walls of the two movable mold plates 5, a bottom mold 7 is arranged at the bottom of the stretch-blow mold, and an opening and closing mold-locking device for driving the movable mold plate 5 to open, close and lock the mold is arranged under the bottom plate 1, a linkage structure is arranged between the opening and closing mold-locking device and the bottom mold 7, and the linkage structure includes a lifting fixed plate 10 connected under one of the movable mold plates 5, a lifting curved groove 11 is arranged in the lifting fixed plate, a bottom mold fixing plate 12 is arranged under the bottom mold 7, and a roller 13 is arranged on the bottom mold fixing plate, and the roller 13 cooperates with the lifting curved groove 11.

[0014] The opening and closing mold locking device is an existing technology, such as the "opening and closing mold device of a bottle blowing machine" disclosed in patent publication number CN104129068A, but in this embodiment, the power driving the drive seat 21 is a servo motor 22, and the output shaft of the servo motor is connected to a screw 23. A wire sleeve 24 is provided on the bottom surface of the drive seat, and the screw 23 cooperates with the wire sleeve 24.

[0015] During mold closing, the mold opening and closing mechanism drives the movable mold plate 5 to close the mold, which in turn drives the lifting fixed plate 10 to move. Driven by the lifting curved groove 11, the roller 13 drives the bottom mold 7 on the bottom mold fixed plate 12 to rise and engage the stretch-blow mold 6. During mold opening, the action is reversed, with the bottom mold 7 descending to release the bottom features of the blow-molded hollow container. The hollow container is then removed by a robot. This solution achieves linkage between the bottom mold and the mold opening and closing mechanism, achieving linkage between mold opening and closing, mold locking, and bottom mold ejection. Furthermore, the system utilizes a servo motor drive, resulting in high precision, high speed, and more stable performance.

[0016] Furthermore, a guide sleeve 15 is provided on the bottom plate 1, and a guide column 16 is provided under the bottom mold fixing plate 12. The guide column 16 cooperates with the guide sleeve 15 to make the bottom mold more stable in lifting and lowering, and cooperate with the stretch blow mold more accurately.

[0017] Furthermore, a boosting plate 20 is provided on each of the two fixed mold plates 3, and a clamping assembly 25 of the opening and closing clamping device is provided on the boosting plate 20. The boosting plate plays a role of boosting, which can assist the clamping assembly and make the clamping assembly more reliable.

[0018] The above-mentioned specific implementation methods are used to illustrate the present invention and are only preferred embodiments of the present invention, rather than limiting the present invention. Within the spirit of the present invention and the scope of protection of the claims, any modifications, equivalent replacements, improvements, etc. made to the present invention shall fall within the scope of protection of the present invention.

Claims

1. A single servo gate type booster bottom mold linkage clamping mechanism, comprising a bottom plate (1) and a top plate (2), two fixed fixed mold plates (3) are arranged between the bottom plate and the top plate, two sliding movable mold plates (5) are arranged on the bottom plate, a pair of corresponding stretch-blow molds (6) are arranged on the side walls of the two movable mold plates (5), a bottom mold (7) is arranged at the bottom of the stretch-blow mold, and an opening and closing mold-locking device for driving the movable mold plate (5) to open, close and lock the mold is arranged under the bottom plate (1), characterized in that: A linkage structure is provided between the mold opening and closing device and the bottom mold (7), wherein the linkage structure comprises a lifting fixed plate (10) connected under one of the movable mold plates (5), a lifting curved groove (11) being provided in the lifting fixed plate, a bottom mold fixing plate (12) being provided under the bottom mold (7), a roller (13) being provided on the bottom mold fixing plate, and the roller (13) being matched with the lifting curved groove (11).

2. The single servo gate type booster bottom mold linkage clamping mechanism according to claim 1, characterized in that A guide sleeve (15) is provided on the bottom plate (1), and a guide column (16) is provided under the bottom mold fixing plate (12), and the guide column (16) is matched with the guide sleeve (15).

3. The single servo gate type pressurized bottom mold linkage clamping mechanism according to claim 1, characterized in that A boosting plate (20) is provided on each of the two fixed mold plates (3), and a mold locking assembly (25) of the mold opening and closing locking device is provided on the boosting plate (20).

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