CN102555192B - Preform transmission device - Google Patents

Abstract

The invention relates to a bottle blank conveying device. In the prior art, the actions of the bottle blank moving into and out of the mold are not coordinated with each other, requiring a large space for the ejection of the bottle body. The present invention includes a frame and a template installed on the frame, and is characterized in that guide grooves are provided at both ends of the template, and a drive assembly is provided on one side of the guide groove, and the drive assembly includes a longitudinal drive mechanism and a longitudinal drive A component-driven lateral movement mechanism, the lateral movement mechanism is provided with an arm bar, and two sets of clamping forks are installed on the arm bar, and the two sets of clamping forks are arranged side by side. Control the movement of the arm rod to realize the arbitrary movement of the arm rod in the horizontal plane, and unify the translation of the preform and the bottle body to improve the work efficiency, reduce the wear of the machine parts, and improve the service life of the machine.

Description

A preform conveying device

technical field

The invention relates to a preform conveying device installed on a bottle blowing machine, in particular to a bottle for transferring a heated preform to a blowing station and moving a blown bottle out of the blowing station. Blank transfer arm.

Background technique

The two-step blow molding machine for manufacturing hollow blow molding containers produces plastic containers. The push rod is inserted into the heated preform and moves the preform along the slide to the mold on the template. When the preform is blown, the preform is blown. The bottle body is ejected from the mold by opening the left and right templates and flipping the bottom template. The preform transfer device with this structure has the following defects: the mechanism for moving the preform into the mold and the mechanism for moving out of the mold are independent of each other, which easily makes the actions uncoordinated and the debugging equipment is complicated. ; In the process of ejecting the mold from the bottle body, a larger opening and closing distance is required for the left and right templates, which increases the moving distance of the templates, which not only reduces efficiency, but also easily wears parts.

Contents of the invention

The technical problem to be solved and the technical task proposed by the present invention are to overcome the technical defects that the prior art preforms are prone to incoordination when moving in and out of the mould, and the bottle body needs a relatively large mold distance when moving out of the mould, and provide a preform The movement movement is uniform and the preform conveying arm requires a small opening and closing distance when the bottle body is moved out of the mold.

The present invention is realized in the following way: a preform conveying device, including a frame and a template installed on the frame, guide grooves are provided at both ends of the template, a drive assembly is provided on one side of the guide groove, and the drive The assembly includes a longitudinal drive mechanism and a lateral movement mechanism driven by the longitudinal drive assembly. The lateral movement mechanism is provided with an arm bar, and two sets of clamping forks are installed on the arm bar. The two sets of clamping forks are arranged side by side. In this scheme, the longitudinal driving mechanism and the lateral moving mechanism jointly control the movement of the arm rod. When the longitudinal driving mechanism moves longitudinally, the lateral moving mechanism and the arm rod move longitudinally together. When the lateral moving mechanism moves laterally, the longitudinal driving member The arm does not move, and the arm moves laterally. Through the mutual cooperation of the longitudinal drive mechanism and the lateral movement mechanism, the arm can move freely in the horizontal plane. The preform and bottle body can be suspended in the guide groove through its process ring, and along the The guide groove moves, and the two sets of clamping forks complete the task of feeding the preform into the template and the bottle body out of the template, realizing the unified transfer of the preform and the bottle. Since the bottle body is moved out of the mold vertically, only a small opening and closing mold is required. distance, improve work efficiency, reduce wear and tear of machine parts, and increase mechanical service life.

As a preference, the discharge end of the arm is connected with a bottle dial assembly. In this solution, the blown bottle body is translated out of the template by the clamping fork, and is pushed away from the blow molding machine by the bottle pulling assembly.

Preferably, the longitudinal driving mechanism includes an air cylinder fixed on the frame and a moving plate driven by the air cylinder. In this scheme, high-pressure gas is delivered to the cylinder to realize the telescopic movement of the piston rod, thereby driving the moving plate to move longitudinally. Due to the short distance of longitudinal movement, the requirements for moving speed can be met through the cylinder, and the gas source required by the cylinder Can be obtained from the blowing air source, no special air supply equipment is required.

Preferably, a guide rod is provided above the moving plate, and both ends of the guide rod are respectively inserted into guide sleeves provided on the machine frame. In this solution, the mobile plate is suspended on the frame by using the guide rod, and the sliding sleeve is used to cooperate with the guide sleeve to realize the smooth movement of the mobile plate to ensure the movement accuracy of the arm.

Preferably, the lateral movement mechanism includes a servo motor and a synchronous belt driven by the servo motor, the servo motor is arranged on the moving plate, the synchronous belt is located under the moving plate, and a connecting piece connects the arm on the timing belt. In this scheme, since the horizontal moving mechanism is placed on the moving plate, it will move longitudinally along with the moving plate, and the servo motor drives the synchronous belt for horizontal reciprocating motion. Since the arm requires a long lateral action distance, the servo motor is used to move The characteristics of fast and precise are conducive to the fast and accurate lateral movement of the boom; the boom is fixedly connected to the working section of the synchronous belt through the connecting piece, so that the boom moves laterally with the timing belt.

Preferably, a guide rail is provided under the moving plate, and the arm is slidably connected to the guide rail through a slider. In this solution, the correspondingly arranged sliders and guide rails ensure the stable lateral movement of the arm lever and realize the precise delivery of the preform.

Preferably, the guide groove is formed by symmetrically arranged support blanks and bottle holders, and the upper surfaces of the support blanks and bottle holders are flush. In this scheme, the blank holder is placed on the feed end of the formwork, and the bottle holder is placed on the discharge end of the formwork. The upper surfaces of the blank holder and the bottle holder are flush to facilitate the translation of the bottle blank into and out of the template, so that the upper surface of the mold , The preform process ring is matched with the guide groove to improve work efficiency, and the arm bar is set above the template. The support blank is used to support the preform process ring. A certain hardness meets the hardness requirements when the clamping fork clamps the bottle mouth.

Preferably, the two groups of clamping forks are divided into a preform clamping assembly and a bottle body clamping assembly, and each of the preform clamping assembly and the bottle body clamping assembly includes at least two clamping forks of equal number, The bottle shifting assembly includes shifting rods equal in number to the bottle blank clamping assembly and the clamping fork on the bottle body clamping assembly. In this scheme, different components are equipped with different forms of accessories according to their functions, and the number and spacing of manipulators in each component are determined according to the mold conditions on the template. For the function of removing the mold, the clamping fork is used to ensure the accuracy of the preform transfer. The bottle pulling component needs to pull the processed bottle away from the blow molding machine. The accuracy requirement is not high, and the lever can be used to save manufacturing costs.

Preferably, the clamping fork includes a rotating shaft and symmetrically arranged clamping blocks connected to the rotating shaft, one end of the clamping block is provided with a ring groove corresponding to the preform process ring, and the other end is opened with a blind hole , A return spring is clamped in the two blind holes. In this solution, the precise delivery of the preform is realized by using the clamping fork. When the preform needs to be clamped by the clamping fork, the preform is aligned with the notch of the ring groove of the clamping fork and pushed in. The clamping blocks on both sides Compress the return spring on the other end of the clamping block through the action of the rotating shaft, so that the notch of the ring groove becomes larger, making it easier for the bottle mouth to enter the ring groove. As the bottle mouth sinks into the ring groove, the return spring forces the clamping block to return to realize the clamping fork Wrap the bottle mouth. When the preform is to be separated from the clamping fork, just pull the preform along the direction of the notch. The structure is practical, which not only realizes precise delivery, but also allows easy access to the preform.

The outstanding substantive features of the present invention are: the free movement of the arm bar in the horizontal plane is realized through the interlocking lateral movement mechanism and longitudinal drive mechanism, and a preform clamping assembly, a bottle body clamping assembly and a bottle pulling assembly are added on the arm bar , so that the preform enters the mold, exits the mold and leaves the machine synchronously, and the actions of each step have a high degree of unity and coordination. The vertical preform is moved out of the mold through the clamping fork, reducing the opening and closing required for the process Die distance not only saves energy consumption, reduces machine wear, but also improves work efficiency.

Description of drawings

Fig. 1 is the three-dimensional schematic diagram of the present invention;

Fig. 2 is a schematic cross-sectional view of the present invention;

Figure 3 is a three-dimensional schematic diagram of the boom;

Fig. 4 is the three-dimensional schematic diagram of the present invention;

Fig. 5 is a schematic structural representation of the moment when the present invention completes the action;

Fig. 6 is the three-time structure schematic diagram of finishing action of the present invention;

Figure 7 is a schematic cross-sectional view of the clamping fork.

In the figure: 1. Rack, 2. Blank support, 3. Longitudinal drive mechanism, 4. Transverse movement mechanism, 5. Arm bar, 6. Preform clamping assembly, 7. Bottle body clamping assembly, 8. Dial Bottle assembly, 9, cylinder, 10, moving plate, 11, guide groove, 12, guide rod, 13, guide sleeve, 14, servo motor, 15, synchronous belt, 16, bottle holder, 17, connector, 18, Slide block, 19, guide rail, 20, clamping fork, 21, driving lever, 22, clamping block, 23, ring groove, 24, return spring, 25, template. the

Detailed ways

The substantive features of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

A kind of preform conveying device as shown in Figure 1, 4, comprises frame 1 and the template 25 that is installed on frame 1, described template 25 two ends are provided with guide groove 11, and described guide groove 11 side is provided with There is a driving assembly, and the driving assembly includes a longitudinal driving mechanism 3 and a lateral movement mechanism 4 driven by the longitudinal driving assembly 3. An arm 5 is provided on the lateral movement mechanism 4, and two groups of clamping arms are installed on the arm 5. Fork 20, the two groups of clamping forks 20 are arranged side by side (as shown in Figures 2 and 3); the discharge end of the arm bar 5 is connected to a bottle dial assembly 8; the longitudinal drive mechanism 3 includes a The cylinder 9 on the frame 1 and the moving plate 10 driven by the cylinder 9; the lateral movement mechanism 4 includes a servo motor 14 and a synchronous belt 15 driven by the servo motor 14, and the servo motor 14 is placed on the moving On the plate 10, the synchronous belt 15 is located below the moving plate 10, and a connecting piece 17 connects the arm bar 5 to the synchronous belt 15; the guide groove 4 is formed by the symmetrically arranged supporting blank 2 and the bottle supporting part 26, and the The upper surfaces of the supporting blank 2 and the bottle supporting part 26 are flush; the two groups of clamping forks 20 are divided into a preform clamping assembly 6 and a bottle body clamping assembly 7, and the preform clamping assembly 6 and the bottle body The clamping assemblies 7 all comprise at least two clamping forks 20 equal in number, and the described bottle shifting assembly 8 includes a dialing fork equal in quantity to the clamping forks on the bottle blank clamping assembly 6 and the bottle body clamping assembly 7. rod 21.

In order to realize the rapid and precise movement of the arm lever 5, it is achieved by the following method: a guide rod 12 is arranged above the moving plate 10, and the two ends of the guide rod 12 are respectively inserted in the guide sleeves 13 arranged on the frame 1; A guide rail 19 is provided below the moving plate 10, and the arm bar 5 is slidably connected to the guide rail 19 through a slider 18; the clamping fork 20 includes a rotating shaft and symmetrically arranged clamping blocks connected to the rotating shaft 22. One end of the clamping block 22 is provided with a ring groove 23 corresponding to the preform process ring, and the other end is opened with blind holes, and a return spring 24 is clamped in the two blind holes (as shown in Figure 7).

In a specific operation, the width of the guide groove 11 can be adjusted according to the diameter of the preform process ring.

The arm rod 5 performs cyclical movements during work, and each cycle includes four actions: Action 1, the piston rod in the cylinder 9 performs an elongation movement, which drives the lateral movement mechanism 4 and the arm rod 5 to perform longitudinal elongation movement together; Action 2 , the servo motor 14 drives the synchronous belt 15 to rotate in one direction, thereby driving the arm bar 5 to move laterally in one direction; Action 3, the piston rod in the cylinder 9 shrinks and returns to the initial longitudinal position, driving the lateral movement mechanism 4 and The arms 5 move longitudinally together to the longitudinal initial position; Action 4, the servo motor 14 drives the synchronous belt 15 to rotate in the other direction, drives the arm 5 to move laterally to the initial position in the transverse direction, and makes the arm 5 realize the "mouth" shape circulation sports.

In the specific operation, the preform is always in the state of the bottle mouth facing up during processing. Since the preform becomes soft after heating, the preform in the state of the bottle mouth facing down will be bent due to the action of gravity, thus affecting the blowing effect of the preform .

In the specific operation, the arm bar 5 is placed above the mold clamping mechanism of the bottle blowing machine. The side of the template 25 adjacent to the oven is provided with a base plate, and the other side is provided with a bottle support piece 16. The center line of the base plate The chute, the centerline chute of the bottle holder 16, the gap formed after the left and right templates 25 are closed together and the vertical projection of the clamping fork 21 ring groove 23 are in the same direction, and the supporting base plate on the side of the clamping mechanism and The oven and the spacing device are used in conjunction with each other.

When in use, take three cycles as an example in chronological order:

Entering the first cycle: the first batch of preforms is heated by the oven and arranged equidistantly on the supporting base plate by the spacing device; the arm lever 5 performs action one, and the first batch of preforms are clamped clamped by the holding assembly 6; after the clamping is completed, the template 25 performs a mold opening action, so that the preform conveying channel is formed between the templates 25; the arm lever 5 performs the second action, and the arm lever 5 moves laterally toward the end where the bottle dial assembly 8 is located , the first batch of preforms clamped on the preform clamping assembly 6 is transported to the mold between the templates 25; after the second action of the isometric lever 5 is completed, the template 25 performs the mold closing action, which is realized by the closed template 25 Support the first batch of preforms; the arm lever 5 performs action three, and the first batch of preforms is separated from the preform clamping assembly 6 by the limit action of the template 25; the blowing rod is inserted into the first batch of bottles The preforms are blown; the arm lever 5 performs action four, the second batch of preforms is heated and arranged on the supporting blanks equidistantly by the spacing device, and the blowing operation of the first batch of preforms is completed.

Enter the second cycle: the arm bar 5 performs action one, the preform clamping assembly 6 clamps the second batch of preforms, and the bottle body clamping assembly 7 clamps the first batch of components that have been blown (as shown in Figure 5 shown); the template 25 performs the mold opening operation; the arm bar 5 performs the second action, the second batch of preforms is transported into the mold, and the first batch of preforms is translated to the bottle holder 16 (as shown in Figure 6 ); the template 25 performs the mold closing operation, and realizes the supporting of the second batch of preforms through the closed template 25; the arm lever 5 performs the third action, and the second batch of preforms is separated from the preform clamping assembly 6, and the first The batch of preforms is separated from the bottle body clamping assembly 7 and suspended on the bottle holder 16; the blowing rod is inserted into the second batch of preforms to perform the blowing operation; the arm bar 5 performs the fourth action, and the third batch of bottles After the preforms are heated, they are equidistantly arranged on the supporting base plate by the distance separating device, and the blowing operation of the second batch of preforms is completed.

Enter the third cycle: the arm lever 5 performs action one, the preform clamping component 6 clamps the third batch of preforms, the bottle body clamping component 7 clamps the second batch of components that have been blown, and the bottle shifting component 8 and the first batch of preforms are misplaced and inserted; the template 25 performs the mold opening operation; On the bottle supporting part 16, the first batch of preforms is pulled away from the bottle supporting part 16 under the action of the lever to complete the blowing operation; the template 25 performs the mold closing operation, and the third batch of preforms is realized by the closed template 25. Support; the arm rod 5 performs the third action, the third batch of preforms is separated from the preform clamping assembly 6, and the second batch of preforms is separated from the bottle body clamping assembly 7 and suspended on the bottle holder 16; The blowing rod is inserted into the third batch of preforms to carry out the blowing operation; the arm lever 5 performs the fourth action, the fourth batch of preforms completes the heating operation and is arranged on the supporting base board by the distance dividing device at equal distances, the third batch The blowing operation of the preform is completed.

Cycle actions in this sequence to achieve fast and efficient blow molding operations.

Claims (3)

1. A preform conveying device, comprising a frame (1) and a template (25) installed on the frame (1), characterized in that guide grooves (11) are provided at both ends of the template (25), so that A drive assembly is provided on one side of the guide groove (11), and the drive assembly includes a longitudinal drive mechanism (3) and a lateral movement mechanism (4) driven by the longitudinal drive mechanism (3). An arm (5) is provided, and two sets of clamping forks (20) are installed on the arm (5), the two sets of clamping forks (20) are arranged side by side, and the discharge end of the arm (5) Connect a bottle shifting assembly (8), the longitudinal driving mechanism (3) includes a cylinder (9) fixed on the frame (1) and a moving plate (10) driven by the cylinder (9), the moving A guide rod (12) is provided above the plate (10), and the two ends of the guide rod (12) are respectively inserted in the guide sleeve (13) provided on the frame (1), and the lateral movement mechanism (4) It includes a servo motor (14) and a synchronous belt (15) driven by the servo motor (14), the servo motor (14) is placed on the moving plate (10), and the synchronous belt (15) is located on the moving Below the plate (10), a connecting piece (17) connects the arm (5) to the timing belt (15), and a guide rail (19) is provided under the moving plate (10), and the arm (5) passes through a sliding The block (18) is slidably connected to the guide rail (19), and the two groups of clamping forks (20) are divided into a preform clamping assembly (6) and a bottle body clamping assembly (7), and the preform clamping Both the holding assembly (6) and the bottle body holding assembly (7) contain at least two holding forks (20) of equal number, and the bottle pulling assembly (8) includes the same number as the bottle blank holding assembly ( 6). The lever (21) on the bottle clamping assembly (7) is equal to the clamping fork. 2. A bottle blank conveying device according to claim 1, characterized in that the guide groove (11) is formed by symmetrically arranged support blanks (2) and bottle support pieces (26), and the support blanks Part (2) and the upper surface of the bottle holder (26) are flush. 3. A preform conveying device according to claim 1, characterized in that the clamping fork (20) includes a rotating shaft and symmetrically arranged clamping blocks (22) connected to the rotating shaft, the One end of the clamping block (22) is provided with a ring groove (23) corresponding to the preform process ring, and the other end is provided with blind holes, and a return spring (24) is clamped in the two blind holes.

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