Bottle preform orientation mechanism

Abstract

A bottle preform orientation mechanism comprises a main body support, a plurality of vertically-arranged transfer jigs are installed on the main body support, conical guide heads are arranged on the transfer jigs, friction rubber wheels and notch detection devices are installed on the main body support on the side portions of the transfer jigs, and the friction rubber wheels are installed on the main body support through a power driving device. The notch detection device comprises a notch detection head and a transverse driving device, the transverse driving device is installed on the main body support, the notch detection head is installed at the output end of the transverse driving device through a supporting spring, and a detection switch for detecting the position of the notch detection head is further installed at the output end of the transverse driving device. According to the bottle blank feeding device, modular design is adopted, the bottle blank feeding device can be conveniently used in cooperation with an automatic blank feeding machine, the positioning problem of bottle blank feeding in existing production is effectively solved, automatic feeding is achieved, manual operation is reduced, and dangerous factors are greatly reduced.

Description

Technical Field

[0001] The invention relates to the field of machinery, in particular to a bottle embryo production technology, and in particular to a bottle embryo orientation mechanism. Background Art

[0002] Plastic bottles are widely used as packaging materials for daily chemicals. In the production line of plastic bottles, the preforms need to be positioned for loading. In the prior art, the preforms are loaded manually by rotating the preforms. When loading, the notch in the preform screw thread needs to be aligned with the convex pin on the jig before insertion. Therefore, the direction needs to be manually identified before the preform seat is inserted, which is time-consuming and labor-intensive, and also increases the risk factor during the continuous production process of the equipment. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a preform orientation mechanism which is simple in design, stable and durable, and effectively solves the problem of preform feeding and positioning in existing production in view of the deficiencies in the prior art.

[0004] The technical problem to be solved by the present invention is achieved through the following technical scheme: a preform orientation mechanism, comprising a main body support, a plurality of vertically arranged transfer jigs are installed on the main body support, a conical guide head is arranged on the transfer jig, a friction rubber wheel and a gap detection device are installed on the main body support on the side of the transfer jig, and the friction rubber wheel is installed on the main body support through a power drive device; the gap detection device comprises a gap detection head and a transverse drive device, the transverse drive device is installed on the main body support, the gap detection head is installed at the output end of the transverse drive device through a supporting spring, and a detection switch for detecting the position of the gap detection head is also installed at the output end of the transverse drive device.

[0005] Furthermore, a preform detection device is installed on the main body support at the side of the transfer fixture. The preform detection device includes a preform detection board. A photoelectric switch for detecting the preform is installed on the preform detection board.

[0006] Furthermore, the detection switch is a photoelectric switch.

[0007] Furthermore, the conical guide head is hollow inside and has an exhaust hole.

[0008] Furthermore, the power drive device includes a first positioning cylinder and a stepper motor, the first positioning cylinder is mounted on the main support, the stepper motor is mounted on the piston rod end of the first positioning cylinder, and the friction rubber wheel is mounted on the motor shaft of the stepper motor.

[0009] Furthermore, the first positioning cylinder is installed on the main body bracket through a first positioning adjustment plate, and the first positioning adjustment plate is bolted to the main body bracket through a waist groove hole.

[0010] Furthermore, the lateral drive device includes a second positioning cylinder, and the notch detection head is installed on the piston rod end of the second positioning cylinder through a supporting spring.

[0011] Furthermore, the second positioning cylinder is installed on the main body bracket through a second positioning adjustment plate, and the second positioning adjustment plate is bolted to the main body bracket through a set waist slot hole.

[0012] Furthermore, the transfer fixture and the notch detection head are both made of stainless steel.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The transfer fixture is made of stainless steel, with a cone-shaped guide at the head and a vent hole in the middle to facilitate product placement. The uniform size makes it easy to change the production model and adjust the machine.

[0015] 2. The friction rubber wheel is a consumable part. It adopts standard universal parts, which is economical and practical, and convenient for later replacement;

[0016] 3. The friction rubber wheel is driven by a stepper motor, which is economical and practical, and has accurate start and stop positions;

[0017] 4. The notch detection device adopts stainless steel notch detection head + spring + photoelectric detection, which is stable and durable;

[0018] 5. The notch detection head can be replaced to meet the needs of different sizes of preform screw notches;

[0019] 6. Both the first and second positioning adjustment plates are designed with waist slot holes, which can easily adjust the position of preforms with different diameters;

[0020] 7. Added preform detection devices on both sides of the transfer fixture to ensure that the preform products on the transfer fixture can be taken away every time, otherwise an alarm will be prompted. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the present invention;

[0022] Figure 2 It is a structural side view of the present invention;

[0023] Figure 3 It is a top view of the structure of the present invention;

[0024] Figure 4 It is a schematic diagram of the structure of the bottle embryo used in the present invention. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in combination with the drawings and embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] Reference Figure 1-4 A preform orientation mechanism includes a main frame, on which a plurality of vertically arranged transfer jigs 2 are installed to facilitate the positioning and placement of the preform 9. Generally, two transfer jigs 2 are provided to facilitate the positioning operation of two preforms 9 at the same time. A conical guide head is provided on the transfer jig 2 to guide the placement of the preform 9, further facilitating the placement operation of the preform 9. Specifically, the conical guide head is hollow inside and is provided with an exhaust hole 3 to exhaust and release pressure when the preform 9 is placed.

[0027] A friction rubber wheel 4 and a notch detection device are installed on the main body bracket on the side of the transfer jig 2. The friction rubber wheel 4 and the notch detection device are used to cooperate with each other. The friction rubber wheel 4 is used to rotate the bottle preform 9 placed on the transfer jig 2. The notch detection device is used to detect the screw thread notch 91 of the bottle preform 9, so as to determine the stop position of the bottle preform 9 and realize the positioning function of the bottle preform 9.

[0028] Specifically, the friction rubber wheel 4 is installed on the main frame through a power driving device, and the power driving device includes a first positioning cylinder 6 and a stepping motor 5. The first positioning cylinder 6 is installed on the main frame, and the stepping motor 5 is installed on the piston rod end of the first positioning cylinder 6. The friction rubber wheel 4 is installed on the motor shaft of the stepping motor 5. The first positioning cylinder 6 is used to drive the stepping motor 5 to move, drive the friction rubber wheel 4 to contact the bottle preform 9, so that the friction rubber wheel 4 is driven to rotate by the stepping motor 5, and then drive the bottle preform 9 to rotate;

[0029] Preferably, the first positioning cylinder 6 is installed on the main frame through a first positioning adjustment plate, and the first positioning adjustment plate is bolted to the main frame through a waist slot hole, so that the position can be easily adjusted when used for bottle preforms 9 of different diameters;

[0030] Specifically, the notch detection device includes a notch detection head 7 and a transverse driving device 10. The transverse driving device 10 is installed on the main support. The notch detection head 7 is installed at the output end of the transverse driving device 10 through a supporting spring. A detection switch for detecting the position of the notch detection head 7 is also installed at the output end of the transverse driving device 10. The transverse driving device 10 is used to drive the notch detection head 7 to move and contact the threaded part of the bottle preform 9. The setting of the supporting spring is used to make the notch detection head 7 close to the threaded part of the bottle preform 9, so that when the threaded notch 91 of the bottle preform 9 moves to the notch detection head 7, the notch detection head 7 can be stuck in the threaded notch 91 of the bottle preform 9 to position the bottle preform 9. ; In order to further facilitate the cooperation between the notch detection head 7 and the screw notch 91 of the bottle preform 9, a clamping portion having the same shape as the screw notch 91 of the bottle preform 9 is provided on the notch detection head 7, which is used to clamp into the screw notch 91 of the bottle preform 9 to position the bottle preform 9; the detection switch is used to detect the position of the notch detection head 7. After the notch detection head 7 is clamped into the screw notch 91 of the bottle preform 9, the position of the notch detection head 7 changes, so that the distance between the notch detection head 7 and the detection switch changes, thereby triggering the detection switch, and the detection switch sends a detection signal to the controller of the matching automatic embryo loading machine 1, so as to facilitate the next control operation. Preferably, the detection switch is a photoelectric switch;

[0031] Preferably, the lateral drive device 10 includes a second positioning cylinder, the notch detection head 7 is installed on the piston rod end of the second positioning cylinder through a supporting spring, the second positioning cylinder is installed on the main bracket through a second positioning adjustment plate, and the second positioning adjustment plate is bolted to the main bracket through a waist groove hole, so that the position can be easily adjusted when used for bottle preforms 9 of different diameters.

[0032] In order to ensure that the preforms 9 on the transfer jig 2 can be taken away every time and avoid misoperation, a preform detection device is also installed on the main body bracket on the side of the transfer jig 2. The preform detection device includes a preform detection board 8. A photoelectric switch for detecting the preforms 9 is installed on the preform detection board 8. The photoelectric switch detects the preforms 9 on the transfer jig 2 in real time. Since the present invention is used in conjunction with the external automatic preform loading machine 1, the signal detected by the photoelectric switch will be sent to the controller of the external automatic preform loading machine 1, so that the controller of the external automatic preform loading machine 1 can ensure that the product on the jig can be taken away every time according to the detection signal of the photoelectric switch, otherwise an alarm prompt will be issued;

[0033] The transfer fixture 2 and the notch detection head 7 are both made of stainless steel, which is strong, reliable, stable, durable and has a long service life.

[0034] The present invention adopts modular design, which is convenient for use with the automatic preform loading machine 1, effectively solves the positioning problem of preform loading 9 in the existing production, realizes automatic loading, reduces manual operation, and greatly reduces risk factors. The specific working process is as follows:

[0035] 1. The preform positioning mechanism of the present invention is installed on the automatic preform loading machine 1. The clamping claw of the material taking module of the automatic preform loading machine 1 takes the preform 9 with the screw thread notch 91 from the tray and places it on the transfer fixture 2;

[0036] 2. The notch detection head 7 extends forward through the second positioning cylinder, and the notch detection head 7 presses against the threaded part of the bottle preform 9 under the elastic force of the supporting spring;

[0037] 3. The friction rubber wheel 4 is retracted through the first positioning cylinder 6, and the friction rubber wheel 4 partially presses the thread part of the bottle preform 9;

[0038] 4. The friction rubber wheel 4 rotates under the drive of the stepper motor 5, and drives the preform 9 to rotate through friction. When it reaches the position of the screw notch 91, the notch detection head 7 will get stuck in the notch. At this time, the detection switch detects the position change of the notch detection head 7 and sends a detection signal to the controller of the automatic preform loading machine 1. After receiving the detection signal, the controller of the automatic preform loading machine 1 sends a control signal to the stepper motor 5, and the stepper motor 5 stops rotating, completing the positioning of the preform 9.

[0039] 5. After all the preforms 9 have been positioned, the friction rubber wheel 4 is withdrawn, and the notch detection device is withdrawn;

[0040] 6. The material taking module of the automatic preform loading machine 1 takes the material taking claw to clamp the bottle preform 9, takes it away and waits to be inserted into the bottle blowing machine;

[0041] 7. Use the preform detection device to confirm that the preform 9 is taken away from the transfer fixture 2, so as to facilitate the subsequent discharge;

[0042] 8. For preforms 9 of different diameters, the transfer fixture 2 needs to be replaced, and the positions of the friction rubber wheel 4 and the notch detection head 7 need to be adjusted by the first positioning adjustment plate and the second positioning adjustment plate.

[0043] The present invention is a transfer station for directional feeding of bottle preforms 9, which can be installed on an automatic preform feeding machine 1 as a matching accessory. The material taking component of the preform feeding machine grabs the bottle preforms 9 in the tray and changes the distance before putting them on the transfer fixture 2. The friction rubber wheel 4 is driven by a stepping motor 5 to drive the bottle preforms 9 to rotate. The stop position is determined by the cooperation between the notch detection device and the notch at the screw thread part of the bottle preform 9 to realize the directional function of the bottle preform 9. Then, the bottle preform 9 with the directional determined is taken out by taking out the clamping claw to the fixture of the bottle blowing machine. The directional mechanism can be opened or closed according to production needs to be compatible with the feeding of bottle preforms 9 with directional and non-directional production needs.

Claims

1. A preform orientation mechanism, characterized in that: It includes a main body bracket, on which a plurality of vertically arranged transfer fixtures are installed, on which a conical guide head is arranged, and on the main body bracket on the side of the transfer fixture, a friction rubber wheel and a gap detection device are installed, and the friction rubber wheel is installed on the main body bracket through a power drive device; the gap detection device includes a gap detection head and a transverse drive device, the transverse drive device is installed on the main body bracket, the gap detection head is installed on the output end of the transverse drive device through a supporting spring, and a detection switch for detecting the position of the gap detection head is also installed at the output end of the transverse drive device.

2. The preform orientation mechanism according to claim 1, characterized in that: A preform detection device is also installed on the main body support at the side of the transfer fixture. The preform detection device includes a preform detection board. A photoelectric switch for detecting the preform is installed on the preform detection board.

3. The preform orientation mechanism according to claim 1 or 2, characterized in that: The detection switch is a photoelectric switch.

4. The preform orientation mechanism according to claim 1, characterized in that: The conical guide head is hollow inside and is provided with an exhaust hole.

5. The preform orientation mechanism according to claim 1, characterized in that: The power drive device comprises a first positioning cylinder and a stepper motor. The first positioning cylinder is mounted on the main support, the stepper motor is mounted on the piston rod end of the first positioning cylinder, and the friction rubber wheel is mounted on the motor shaft of the stepper motor.

6. The preform orientation mechanism according to claim 5, characterized in that: The first leaning cylinder is installed on the main body bracket through a first leaning adjustment plate, and the first leaning adjustment plate is bolted to the main body bracket through a waist groove hole.

7. The preform orientation mechanism according to claim 1, characterized in that: The lateral driving device comprises a second positioning cylinder, and the notch detection head is installed on the piston rod end of the second positioning cylinder through a supporting spring.

8. The preform orientation mechanism according to claim 7, characterized in that: The second leaning cylinder is installed on the main body bracket through a second leaning adjustment plate, and the second leaning adjustment plate is bolted to the main body bracket through a waist groove hole.

9. The preform orientation mechanism according to claim 1, characterized in that: The transfer fixture and the notch detection head are both made of stainless steel.

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