CN111730849A

CN111730849A - Servo mechanical combined linkage mechanism for stretching and sealing bottle blank of bottle blowing machine

Info

Publication number: CN111730849A
Application number: CN202010559205.9A
Authority: CN
Inventors: 冯伟君
Original assignee: Taizhou Dagegelan Packaging Machinery Co ltd
Current assignee: Taizhou Dagegelan Packaging Machinery Co ltd
Priority date: 2020-06-18
Filing date: 2020-06-18
Publication date: 2020-10-02

Abstract

The invention provides a bottle blank stretching and sealing servo mechanical combined linkage mechanism of a bottle blowing machine, which comprises a rack, wherein a servo motor is arranged at the top of the rack, a screw rod and a guide rail are vertically arranged on the rack, the guide rail is fixed on the rack, the upper end and the lower end of the screw rod are rotatably arranged on the rack through bearings, the top end of the screw rod is driven to rotate through the servo motor, a sliding block is in threaded connection with the screw rod, and the rear side of the sliding block is matched with the shape of the guide rail and slides along the guide rail in a guiding manner; the utility model discloses a lead screw, including lead screw, rack, turning block, connecting rod, closing device, slider bottom, the frame upper end position of lead screw both sides articulates there is the turning block, the turning block upper end extends to the inboard and articulates in end department has the gyro wheel, the slider both sides are provided with the notch with gyro wheel looks adaptation, the turning block lower extreme articulates there is the connecting rod, and the connecting rod bottom articulates there is the closing device, the slider bottom is connected with tensile pole, and tensile pole passes. The invention has accurate control and quick response action, ensures the synchronous execution of the sealing action and ensures that the bottle blank blow molding process is more efficient and stable.

Description

Servo mechanical combined linkage mechanism for stretching and sealing bottle blank of bottle blowing machine

Technical Field

The invention relates to a bottle blowing machine component, in particular to a servo mechanical combined linkage mechanism for stretching and sealing bottle blanks of a bottle blowing machine.

Background

In the bottle blowing process of the bottle blowing machine, high-pressure air is blown into a bottle blank through a blowing piston rod in a sealing air cylinder to blow and form the bottle blank, the process requires that the space between the bottle blowing piston rod and the bottle blank is sealed and can not leak air, and meanwhile, a stretching rod moves downwards to stretch the wall of the bottle blank; before bottle blowing, a precursor moving end enclosure mechanism is required to move downwards and tightly press on a mould to ensure sealing, and then a stretching rod moves downwards to stretch a bottle blank; after the bottle is blown and formed, the stretching rod moves upwards to reach the upper limit position, and the bottle blowing piston rod drives the end sealing mechanism to move upwards so that the mechanical arm can take out the bottle.

In the traditional bottle blowing machine, the up-and-down movement of the stretching rod is executed by the stretching cylinder, and the up-and-down movement of the sealing cylinder piston rod is executed by the sealing cylinder. However, with the development of the technology, the response and moving speed of the stretching cylinder can not meet the speed requirement of the bottle blowing machine gradually, and the single speed of the stretching rod driven by the stretching cylinder can not meet the blowing process of complicated bottle types. And generally, a rail type structure is adopted, a plurality of sealing mechanisms are controlled in a unified way, and when one sealing mechanism fails, the sealing mechanism in the whole row fails, for example, the patent publication with the application number of 201920246521.3 and the name of 'stretching and sealing linkage device of rotary bottle blowing machine'. The prior art, as indicated in the background, suffers from this drawback, as shown in figures 1 and 2. In the application text, a stretching and sealing linkage device is improved, as shown in fig. 3, but the stretching linkage mode with the structure is still prone to failure, and needs to be further improved.

Disclosure of Invention

Aiming at the problems, the invention aims to provide a bottle blank stretching and sealing servo mechanical combined linkage mechanism of a bottle blowing machine, which has novel structure and high reaction speed, adopts a servo motor to control independently, and has good sealing and stretching effects, so that the whole blow molding process is smoother.

The technical scheme of the invention is that a bottle blank stretching and sealing servo mechanical combined linkage mechanism of a bottle blowing machine comprises a rack, wherein a servo motor is arranged at the top of the rack, a screw rod and a guide rail are vertically arranged on the rack, the guide rail is fixed on the rack, the upper end and the lower end of the screw rod are rotatably arranged on the rack through bearings, the top end of the screw rod is driven to rotate through the servo motor, a sliding block is connected to the screw rod in a threaded manner, and the rear side of the sliding block is matched with the shape of the guide rail and slides along the guide rail in a guiding; the upper end of the rack on two sides of the screw rod is hinged with a rotating block, the upper end of the rotating block extends inwards and is hinged with a roller at the end, notches matched with the roller are arranged on two sides of the sliding block, the lower end of the rotating block is hinged with a connecting rod, the bottom of the connecting rod is hinged with a sealing device, the bottom end of the sliding block is connected with a stretching rod, and the stretching rod penetrates through a center hole of the sealing device; when the sliding block moves upwards to the proper position, the roller is clamped into the notch of the sliding block, so that the lower end of the rotating block is turned inwards to the proper position to drive the connecting rod to move upwards to realize the ascending of the sealing device; when the sliding block moves downwards to be separated from the roller, the lower end of the rotating block overturns outwards to drive the connecting rod to move downwards to realize the sealing action, and the stretching rod moves downwards synchronously along with the sliding block and pushes against the bottom of a bottle blank to realize the bottle blank blowing process.

Preferably, an upper end and a lower end extend inwards from the inner side of the rotating block, rollers are hinged to the upper end and the lower end, the rollers at the upper end are closer to the inner side than the rollers at the lower end, an upper notch and a lower notch are formed in the sliding block, and the upper notch is an arc transition area with a small upper part and a large lower part; when the sliding block moves upwards, the roller at the upper end contacts the upper notch and drives the lower end of the rotating block to turn inwards, so that the roller at the lower end is turned and clamped into the lower notch for positioning, and the sealing device moves upwards; when the sliding block moves downwards, the roller at the lower end of the lower notch is extruded to separate from the lower end of the lower notch, so that the lower end of the rotating block is overturned outwards and drives the sealing device to move downwards in place through the connecting rod to realize sealing.

Preferably, the horizontal cross section of the rack is a U-like section, the guide rail is vertically fixed on the bottom surface of the inner side of the U-like section, and the rotating blocks are hinged on the left and right surfaces of the inner side of the U-like section.

Preferably, the outer side of the sealing device is connected with an air blowing device.

Preferably, a fixed plate is arranged at the top of the rack, and the servo motor is mounted on the fixed plate and drives the screw rod to rotate through a belt wheel and a transmission belt.

The invention adopts the servo motor to independently drive the bottle blank stretching action of the bottle blowing machine, has accurate control and quick response action, and simultaneously adopts a mechanical matching structure among the sliding block, the rotating block and the connecting rod to ensure the synchronous execution of the sealing action and more efficient and stable bottle blank blowing process.

Drawings

FIG. 1 is a schematic diagram of a prior art structure;

FIG. 2 is a schematic illustration of the operation of the cam assembly of FIG. 1;

FIG. 3 is a schematic diagram of a prior art modification;

FIG. 4 is a schematic view of the slider of the present invention in an upper limit position;

FIG. 5 is a schematic rear view of the structure of FIG. 4;

FIG. 6 is a schematic view of the structure of FIG. 4 with the frame and the blowing device removed;

FIG. 7 is a schematic view of the slider moving downward in the sealing state according to the present invention;

FIG. 8 is a schematic view of the structure of FIG. 7 with the frame and the blowing device removed;

wherein: 1, a frame; 2-a servo motor; 3, a screw rod; 4-a guide rail; 5, a sliding block; 6, turning the block; 7, rolling wheels; 8-notch; 9-a connecting rod; 10-a sealing device; 11-stretching rod; 12-upper end; 13-lower end; 14-upper notch; 15-lower notch; 16-a blowing device; 17, fixing a plate; 18-a pulley; 19-transmission belt.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 4 to 8, the invention provides a bottle blank stretching and sealing servo mechanical combined linkage mechanism of a bottle blowing machine, which comprises a frame 1, wherein a servo motor 2 is arranged at the top of the frame 1, a screw rod 3 and a guide rail 4 are vertically arranged on the frame 1, the guide rail 4 is fixed on the frame 1, the upper end and the lower end of the screw rod 3 are rotatably arranged on the frame 1 through bearings, the top end of the screw rod 3 is driven to rotate through the servo motor 2, a slide block 5 is connected on the screw rod 3 in a threaded manner, and the rear side of the slide block 5 is matched with the shape of the guide rail 4 and slides along the guide rail 4 in a guiding; the upper end positions of the rack 1 on the two sides of the screw rod 3 are hinged with rotating blocks 6, specifically, the horizontal cross section of the rack 1 is a U-like section, the guide rails 4 are vertically fixed on the inner bottom surface of the U-like section, the rotating blocks 6 are hinged on the left and right surfaces of the inner side of the U-like section, the upper end of each rotating block 6 extends inwards and is hinged with a roller 7 at the end, notches 8 matched with the rollers 7 are formed in the two sides of the sliding block 5, the lower end of each rotating block 6 is hinged with a connecting rod 9, the bottom of each connecting rod 9 is hinged with a sealing device 10, the bottom end of each sliding block 5 is connected with a stretching rod 11, and each stretching rod 11 penetrates through the center hole of each sealing device 10; when the sliding block 5 moves upwards to a proper position, the roller 7 is clamped into the notch 8 of the sliding block and the lower end of the rotating block 6 is turned inwards to a proper position to drive the connecting rod 9 to move upwards so as to realize the ascending of the sealing device 10; when the sliding block 5 moves downwards to separate from the roller 7, the lower end of the rotating block 6 turns outwards to drive the connecting rod 9 to move downwards to realize the sealing action, and the stretching rod 11 moves downwards synchronously along with the sliding block 5 and is supported at the bottom of the bottle blank to realize the bottle blank blowing process.

Specifically, an upper end 12 and a lower end 13 extend inwards from the inner side of the rotating block 6, the upper end 12 and the lower end 13 are hinged with rollers 7, the rollers 7 of the upper end 12 are closer to the inner side than the rollers 7 of the lower end 13, an upper notch 14 and a lower notch 15 are arranged on the sliding block 5, and the upper notch 14 is an arc transition area with a small upper part and a large lower part; when the sliding block 5 moves upwards, the roller 7 of the upper end head 12 contacts the upper notch 14 firstly and drives the lower end of the rotating block 6 to turn inwards, so that the roller 7 of the lower end head 13 turns and is clamped into the lower notch 15 for positioning, and the sealing device 10 moves upwards; when the sliding block 5 moves downwards, the roller 7 of the lower end 13 is extruded by the lower notch 15 to be separated, the lower end of the rotating block 6 is overturned outwards, and the connecting rod 9 drives the sealing device 10 to move downwards to a proper position to realize sealing.

Preferably, an air blowing device 16 is connected to the outer side of the sealing device 10.

Preferably, a fixing plate 17 is arranged at the top of the frame 1, and the servo motor 2 is mounted on the fixing plate 17 and drives the screw rod 3 to rotate through a belt pulley 18 and a transmission belt 19.

During the specific operation, as shown in fig. 4 to 6, the slide block 5 is located at the upper limit position, the lower end of the rotating block 6 is in an inward-turning state at this time, the rollers 7 at the upper end 12 and the lower end 12 of the rotating block 6 are clamped into the lower notch 15 of the slide block 5 at this time, so as to drive the upper end of the connecting rod 9 to tilt inwards, lift up the sealing device 10 integrally, and enable the bottle blank to be in a mold-opening state (wherein the left mold, the right mold and the bottom mold are common parts of a bottle blowing machine and are not shown in the figure) by matching with the left mold, the right mold and the bottom mold of the bottle blank of the bottle blowing.

Under the above-mentioned state, put into the bottle base, the left mould of control bottle blowing machine bottle base, right mould and die block compound die, start servo motor 2, servo motor 2 drives the lead screw 3 through band pulley 18 and drive belt 19 and rotates, make slider 5 slide down along guide rail 4, the gyro wheel 7 of lower tip 12 department on the turning block 6 is extruded to the lower notch 15 of slider 5, the lower extreme that drives turning block 6 overturns outwards, connecting rod 9 upper end overturns outwards simultaneously, until connecting rod 9 is in vertical state again, drive closing device 10 translation downwards in this process, until the bottle base seals the action and accomplishes, the bottle base has been in the state of preparing the blowing this moment. On one hand, the blowing device 16 starts blowing air to the bottle blank at the bottle opening position, on the other hand, the servo motor 2 continues to work, the sliding block 5 continues to move downwards, the stretching rod 11 at the bottom of the sliding block 5 is propped against the inner bottom surface of the bottle blank, the bottle blank is gradually blown into the shape of the bottle along with the blow molding process of the bottle blank, the stretching rod 11 moves downwards along with the blow molding process, and the stretching rod 11 always props against the inner bottom surface of the bottle in the process, as shown in fig. 7 and 8, the blow molding process of the whole bottle is smoothly carried out.

After the blow molding is completed, the servo motor 2 controls the sliding block 5 to move upwards, so that the stretching rod 11 exits from the inside of the bottle, when the sliding block 5 moves upwards, the roller 7 of the upper end head 12 contacts the upper notch 14 firstly and drives the lower end of the rotating block 6 to turn inwards to enable the roller 7 of the lower end head 13 to turn over and clamp into the lower notch 15 for positioning, the sealing device 10 moves upwards while the rotating block 6 and the connecting rod 9 turn over until the sliding block 5 moves upwards in place, as shown in fig. 4, the left mold, the right mold and the bottom mold of the bottle blank of the bottle blowing machine are controlled to be opened, the mold opening action is realized, the bottle after the blow molding is taken down, a new bottle blank is replaced, and the next-step blow.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any simple modification, equivalent change or modification made to the above embodiments according to the technical principle of the present invention still falls within the scope of the technical solution of the present invention.

Claims

1. The utility model provides a tensile servo mechanical combination formula link gear that seals of bottle blowing machine bottle base, includes frame (1), its characterized in that: the top of the rack (1) is provided with a servo motor (2), a screw rod (3) and a guide rail (4) are vertically arranged on the rack (1), the guide rail (4) is fixed on the rack (1), the upper end and the lower end of the screw rod (3) are rotatably installed on the rack (1) through bearings, the top end of the screw rod (3) is driven to rotate through the servo motor (2), a sliding block (5) is connected to the screw rod (3) in a threaded manner, and the rear side of the sliding block (5) is matched with the shape of the guide rail (4) and slides along the guide rail (4) in a guiding manner; the upper end positions of the racks (1) on the two sides of the screw rod (3) are hinged with rotating blocks (6), the upper ends of the rotating blocks (6) extend inwards and are hinged with rollers (7) at the end heads, notches (8) matched with the rollers (7) are arranged on the two sides of the sliding block (5), the lower end of the rotating block (6) is hinged with a connecting rod (9), a sealing device (10) is hinged to the bottom of the connecting rod (9), the bottom end of the sliding block (5) is connected with a stretching rod (11), and the stretching rod (11) penetrates through a center hole of the sealing device (10); when the sliding block (5) moves upwards to the right position, the roller (7) is clamped into the notch (8) of the sliding block and the lower end of the rotating block (6) is turned inwards to the right position to drive the connecting rod (9) to move upwards to realize the ascending of the sealing device (10); when the sliding block (5) moves downwards to separate from the roller (7), the lower end of the rotating block (6) overturns outwards to drive the connecting rod (9) to move downwards to realize the sealing action, and the stretching rod (11) moves downwards synchronously along with the sliding block (5) and is supported at the bottom of a bottle blank to realize the bottle blank blowing process.

2. The servo mechanical combined linkage mechanism for stretching and sealing bottle blanks of a bottle blowing machine according to claim 1, which is characterized in that: an upper end (12) and a lower end (13) extend inwards from the inner side of the rotating block (6), rollers (7) are hinged to the upper end (12) and the lower end (13), the rollers (7) of the upper end (12) are closer to the inner side position relative to the rollers (7) of the lower end (13), an upper notch (14) and a lower notch (15) are arranged on the sliding block (5), and the upper notch (14) is an arc transition area with a small upper part and a large lower part; when the sliding block (5) moves upwards, the roller (7) of the upper end (12) contacts the upper notch (14) and drives the lower end of the rotating block (6) to turn inwards, so that the roller (7) of the lower end (13) turns and is clamped into the lower notch (15) for positioning, and the sealing device (10) moves upwards; when the sliding block (5) moves downwards, the lower notch (15) extrudes the roller (7) of the lower end (13) to separate from the lower end of the lower groove and enables the lower end of the rotating block (6) to turn outwards, and the connecting rod (9) drives the sealing device (10) to move downwards to the right position to realize sealing.

3. The servo mechanical combined linkage mechanism for stretching and sealing bottle blanks of a bottle blowing machine according to claim 1, which is characterized in that: the horizontal cross section of the rack (1) is a U-like section, the guide rail (4) is vertically fixed on the inner bottom surface of the U-like section, and the rotating block (6) is hinged to the left and right surfaces of the inner side of the U-like section.

4. The servo mechanical combined linkage mechanism for stretching and sealing bottle blanks of a bottle blowing machine according to claim 1, which is characterized in that: and the outer side of the sealing device (10) is connected with an air blowing device (16).

5. The servo mechanical combined linkage mechanism for stretching and sealing bottle blanks of a bottle blowing machine according to claim 1, which is characterized in that: the top of the rack (1) is provided with a fixed plate (17), and the servo motor (2) is installed on the fixed plate (17) and drives the screw rod (3) to rotate through a belt wheel (18) and a transmission belt (19).