Bottle preform detecting and returning mechanism for plastic bottle processing

Abstract

The invention discloses a bottle preform detecting and returning mechanism for plastic bottle processing, and relates to the technical field of bottle blowing machines. The device comprises a bottle preform track mechanism, a fixed mounting seat, a detection electric eye and a material returning assembly, the bottle preform rail mechanism is uniformly matched with roller guide seats; bottle preforms are matched with the bottoms of the roller guide seats; the fixed mounting seat is fixedly provided with a material returning assembly below the bottle blank, the fixed mounting seat is further fixedly provided with a detection electric eye on the front side of the material returning assembly, and the detection electric eye and the material returning assembly are electrically connected with a control panel; the material returning assembly comprises an air cylinder and a material returning plate, the telescopic end of the air cylinder is fixedly provided with the material returning plate, a receding groove is formed in the top of the material returning plate, and the material returning plate is provided with material returning pressing plates on the two sides of the receding groove. Through the action of the detection electric eye and the material returning assembly, bottle preforms in an abnormal state can be removed, so that the normal operation of equipment is not influenced; the device has the advantages of protecting the lamp tube and the heating system in the device and ensuring that the bottle preform is smoothly heated.

Description

Technical Field

[0001] The invention belongs to the technical field of bottle blowing machines, and in particular relates to a bottle embryo detection and material return mechanism for processing plastic bottles. Background Art

[0002] When processing and producing plastic bottles, it is usually necessary to insert the preforms into the preform insertion head and enter the heating system in a row for heating. In order to achieve higher heating efficiency, the lamps in the heating system are often very close to the preforms in a row. In actual production, the preform insertion head may not be fully inserted into the preforms due to the mismatch between the actual size of the preforms and the processing accuracy of the preform insertion head, or the installation deviation of the preform insertion station. When the preforms rotate crookedly in the heating system, the lamps will be damaged, resulting in uncontrollable downtime, low production efficiency, and failure to meet the company's needs for long-term stable production.

[0003] In view of the above-mentioned problem that the lamp tube and the heating system may fail due to the installation deviation of the preform, the present invention designs a preform detection and material return mechanism for plastic bottle processing. Summary of the invention

[0004] The purpose of the present invention is to provide a preform detection and material return mechanism for plastic bottle processing, which can remove the preforms in an abnormal state by detecting the functions of electric eyes and material return components, so as not to affect the normal operation of the equipment or even cause shutdown failure; it has the advantages of protecting the lamp tubes and heating system in the equipment and ensuring that the preforms can successfully complete the heating process, and solves the above-mentioned problem that the preform installation deviation leads to the failure of the lamp tube and the heating system.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] The present invention discloses a preform detection and return mechanism for processing plastic bottles, comprising a preform track mechanism and a fixed mounting seat, a detection electric eye and a return assembly; a relative inner side surface of the preform track mechanism is evenly matched with a plurality of roller guide seats, a heating head is plugged and matched inside the roller guide seat, a preform is matched with the bottom of the heating head, and the fixed mounting seat is located below the preform track mechanism and the preform; a return assembly is fixedly mounted on the fixed mounting seat below the preform, a detection electric eye is also fixedly mounted on the fixed mounting seat at the front side of the return assembly, and the detection electric eye and the return assembly are both electrically connected to a control panel; the return assembly comprises a cylinder and a return plate, a return plate is fixedly mounted on the telescopic end of the cylinder, a clearance groove is provided on the top of the return plate, and return pressing plates are arranged on both sides of the clearance groove; the inner wall of the clearance groove is clearance-matched with the top of the preform; in an actual working scenario, after the preform is inserted by the heating head, Its external manifestation is in three forms, form one: the heating head is completely inserted into the preform; form two: the preform is not completely inserted but not tilted; form three: the preform is not completely inserted and is skewed; among them, form three is the main factor that breaks the lamp tube in the heating system, so it must be rejected; form two is unlikely to break the lamp tube, but it needs to be transferred to the robot after heating, which will cause handover problems, and it may fall randomly during operation, so it also needs to be rejected; the preforms in forms two and three are lower than the bottom of the preform in form one. At this time, a detection electric eye is installed slightly lower than the bottom of the preform in form one, so that the preforms in forms two and three are easily detected by the detection electric eye; when the detection electric eye detects, the detection electric eye will output a signal to the control panel; the control panel then controls the cylinder to extend and retract, and uses the stripping plate to reject the preforms in forms two and three.

[0007] As a preferred technical solution of the present invention, the fixed mounting seat is fixedly installed with a limiting slide groove on one side of the stripping plate, and the inner side wall of the limiting slide groove is slidably matched with one side of the stripping plate; the limiting slide groove is used to control the lifting and lowering stroke range of the cylinder and the bottom of the stripping plate, to avoid the bottom of the stripping plate being too high and hindering the bottom of the bottle preform from passing through, and to avoid the top of the stripping plate being too low and failing to smoothly complete the removal operation of the bottle preforms in form two and form three.

[0008] As a preferred technical solution of the present invention, an installation groove is opened in the bottom wall of the limiting slide groove, and a photoelectric sensor is fixedly installed in the installation groove, and the photoelectric sensor is electrically connected to a control panel; the photoelectric sensor will collect data information on the lifting height of the cylinder and the stripping plate during the rejection operation, and the control panel can determine whether the rejection operation is completed based on the data information on the lifting height.

[0009] As a preferred technical solution of the present invention, the fixed mounting seat is fixedly mounted with a material receiving cylinder below the top of the material stripping plate.

[0010] As a preferred technical solution of the present invention, the fixed mounting seat is also fixedly mounted with a detection electric eye A on the rear side of the material return assembly for detecting whether the material return is completed; when the detection electric eye detects the bottle embryos in form two and form three, the control panel will control the cylinder and the material return plate to perform the material return operation after a corresponding delay according to the conveying speed of the roller guide seat; and the detection electric eye A will also detect that the bottle embryo under the roller guide seat here is removed after a corresponding delay, so as to verify that the material return assembly has accurately completed the material return operation.

[0011] As a preferred technical solution of the present invention, the ratio range value of the horizontal spacing between the bottom of the stripper plate and the stripper pressing plate to the horizontal spacing between two adjacent bottle preforms is 1-3; when the stripper pressing plate squeezes the bottle preform downward to make the bottle preform fall, the bottom of the stripper plate cannot cause obstruction, so the bottom of the stripper plate cannot be located directly under the stripper pressing plate, but there is a horizontal spacing and it is not less than the horizontal spacing between two adjacent bottle preforms.

[0012] The present invention has the following beneficial effects:

[0013] 1. The present invention can remove the bottle preforms in abnormal state by detecting the functions of the electric eye and the material rejection component to avoid affecting the normal operation of the equipment; it has the advantages of protecting the lamp tubes and heating system in the equipment, ensuring that the bottle preforms complete the heating process smoothly, and being easy to install, simple to use, low cost, and easy to transform existing equipment.

[0014] 2. The invention is designed with the function of detecting electric eyes and material return components, which not only reduces the abnormal loss of lamp tubes and reduces costs, but also reduces downtime for maintenance and ensures the long-term stable operation of the equipment.

[0015] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0017] Figure 1 This is a structural schematic diagram of a preform detection and material return mechanism for plastic bottle processing of the present invention in Example 1;

[0018] Figure 2 This is a structural front view of a preform detection and material return mechanism for plastic bottle processing of the present invention in Example 1;

[0019] Figure 3 It is a structural side view of a preform detection and material return mechanism for plastic bottle processing of the present invention in Example 1;

[0020] Figure 4 This is a structural front view of a preform detection and material return mechanism for plastic bottle processing of the present invention in Example 2;

[0021] Figure 5 for Figure 4 A partial enlarged view of the middle A;

[0022] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0023] 1-bottle embryo track mechanism, 2-fixed mounting seat, 3-detection electric eye, 4-material return assembly, 5-bottle embryo, 6-material receiving barrel, 101-roller guide seat, 102-heating head, 201-limiting slide, 202-photoelectric sensor, 301-detection electric eye A, 401-cylinder, 402-material return plate, 403-allowance groove, 404-material return pressure plate. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only 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.

[0025] Embodiment 1

[0026] See also Figure 1-3As shown, the present invention is a preform detection and material return mechanism for plastic bottle processing, comprising a preform track mechanism 1 and a fixed mounting seat 2, a detection electric eye 3, and a material return assembly 4; a plurality of roller guide seats 101 are evenly matched on a relatively inner side surface of the preform track mechanism 1, a heating head 102 is plugged and matched inside the roller guide seat 101, a preform 5 is matched at the bottom of the heating head 102, and the fixed mounting seat 2 is located below the preform track mechanism 1 and the preform 5; the fixed mounting seat 2 is fixedly mounted with the material return assembly 4 below the preform 5 , the fixed mounting seat 2 is also fixedly mounted with a detection electric eye 3 on the front side of the material stripping component 4, and the detection electric eye 3 and the material stripping component 4 are electrically connected to a control panel; the material stripping component 4 includes a cylinder 401 and a material stripping plate 402, and the telescopic end of the cylinder 401 is fixedly mounted with a material stripping plate 402, and a clearance groove 403 is provided on the top of the material stripping plate 402, and the material stripping plate 402 is provided with a material stripping pressing plate 404 on both sides of the clearance groove 403; the inner wall of the clearance groove 403 is clearance-matched with the top of the bottle embryo 5; in the actual working scene, After the preform 5 is inserted by the heating head 102, it has three external manifestations, the first form is: the heating head 102 is completely inserted into the preform 5; the second form is: the preform 5 is not completely inserted but not tilted; the third form is: the preform 5 is not completely inserted and is tilted; among them, the third form is the main factor of breaking the lamp tube in the heating system, so it must be rejected; the second form is unlikely to break the lamp tube, but it needs to be transferred to the robot after heating, which will cause the problem of handover, and it may fall randomly during operation, so it also needs to be rejected; the preform 5 in the second and third forms is lower than the bottom of the preform 5 in the first form, at this time, the detection electric eye 3 is installed at a slightly lower position than the bottom of the preform 5 in the first form, so that the preform 5 in the second and third forms can be easily detected by the detection electric eye 3; when the detection electric eye 3 detects, the detection electric eye 3 will output a signal to the control panel; the control panel then controls the cylinder 401 to perform upward and downward telescopic operations, and uses the stripping plate 402 to reject the preform 5 in the second and third forms.

[0027] Among them, the detection electric eye 3 emits a beam of infrared or laser light; when this beam of light encounters the bottle embryo 5, part of the light will be absorbed by the object, and part of the light will be reflected back; the photodiode or photosensitive element in the detection electric eye 3 receives the reflected light, converts it into an electrical signal, and transmits it to the circuit for processing and analysis; by measuring the intensity and time of the received light signal, the electric eye can determine the existence and position of the object; when the bottle embryo 5 blocks the light beam, the received reflected light signal will weaken or disappear, thereby triggering the output signal of the electric eye.

[0028] Among them Figure 2-3As shown, the fixed mounting seat 2 is fixedly mounted with a receiving barrel 6 below the top of the stripping plate 402; the ratio range value of the horizontal distance between the bottom of the stripping plate 402 and the stripping pressing plate 404 and the horizontal distance between two adjacent bottle preforms 5 is 1-3; when the stripping pressing plate 404 presses the bottle preforms 5 downward to make the bottle preforms 5 fall, the bottom of the stripping plate 402 cannot cause an obstacle, so the bottom of the stripping plate 402 cannot be located directly below the stripping pressing plate 404, but there is a horizontal distance and it is not less than the horizontal distance between two adjacent bottle preforms 5.

[0029] The working principle of this embodiment is as follows: if the heating head 102 is completely inserted into the preform 5, the detection electric eye 3 here cannot detect any signal, the cylinder 401 does not move, and the preform 5 passes through the stripping plate 402 normally into the heating system; if the heating head 102 fails to be completely inserted into the preform 5, it will present the abnormal state of form 2 and form 3. At this time, the detection electric eye 3 detects a signal, and after a delay, the preform 5 runs to the blanking station, and the cylinder 401 moves quickly to drive the stripping plate 402 to move vertically downward. The stripping plate 402 clamps the support ring of the preform 5 in the abnormal state and drives the preform 5 to move downward. The preform 5 in the abnormal state is separated from the heating head 102, falls into the blanking barrel 6 below and is collected, and the cylinder 401 quickly returns to its original position and waits for the next signal.

[0030] The preform detection and return mechanism of the present embodiment has the advantages of simple structure and easy modification of existing equipment, and is particularly suitable for old equipment with insufficient or reduced processing precision. By removing the preforms 5 in abnormal state in advance, the occurrence of lamp damage is reduced, and the abnormal downtime is reduced, which plays an important role in maintaining the safe operation of plastic bottle production and has strong practicality.

[0031] Embodiment 2

[0032] A more preferred technical solution based on the first embodiment is as follows: Figure 4-5 As shown, the fixed mounting seat 2 is fixedly mounted with a limiting slide groove 201 on one side of the stripping plate 402, and the inner side wall of the limiting slide groove 201 is slidably matched with one side of the stripping plate 402; the limiting slide groove 201 is used to control the lifting and lowering stroke range of the cylinder 401 and the bottom of the stripping plate 402, to prevent the bottom of the stripping plate 402 from being too high and hindering the bottom of the bottle embryo 5 from passing through, and to prevent the top of the stripping plate 402 from being too low and failing to smoothly complete the removal operation of the bottle embryos 5 in the second and third shapes.

[0033] Among them Figure 5As shown, an installation groove is opened on the bottom wall of the limiting slide groove 201, and a photoelectric sensor 202 is fixedly installed in the installation groove, and the photoelectric sensor 202 is electrically connected to the control panel; the photoelectric sensor 202 will collect data information of the lifting height of the cylinder 401 and the stripping plate 402 during the rejection operation, and the control panel can determine whether the rejection operation is completed based on the data information of the lifting height.

[0034] Among them Figure 5 As shown, the fixed mounting seat 2 is also fixedly mounted with a detection electric eye A301 on the rear side of the material stripping assembly 4 for detecting whether the material stripping is completed, and the height of the detection electric eye A301 is not lower than the height of the detection electric eye 3; when the detection electric eye 3 detects the bottle embryo 5 in the second and third forms, the control panel will control the cylinder 401 and the material stripping plate 402 to perform the material stripping operation after a corresponding delay according to the conveying speed of the roller guide seat 101; and the detection electric eye A301 will also detect that the bottle embryo 5 under the roller guide seat 101 here is removed after a corresponding delay, so as to verify that the material stripping assembly 4 has accurately completed the material stripping operation.

[0035] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0036] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A preform detection and material return mechanism for plastic bottle processing, comprising a preform track mechanism (1) and a fixed mounting seat (2), characterized in that: It comprises a detection electric eye (3) and a material return component (4); A plurality of roller guide seats (101) are evenly matched on a relatively inner side surface of the preform track mechanism (1), a heating head (102) is plugged into the roller guide seat (101), a preform (5) is matched at the bottom of the heating head (102), and the fixed mounting seat (2) is located below the preform track mechanism (1) and the preform (5); a material return assembly (4) is fixedly mounted on the fixed mounting seat (2) below the preform (5), and a detection electric eye (3) is also fixedly mounted on the front side of the material return assembly (4) on the fixed mounting seat (2), and the detection electric eye (3) and the material return assembly (4) are both electrically connected to a control panel; The material stripping assembly (4) comprises a cylinder (401) and a material stripping plate (402); the material stripping plate (402) is fixedly mounted on the telescopic end of the cylinder (401); a clearance groove (403) is provided on the top of the material stripping plate (402); and material stripping pressing plates (404) are provided on both sides of the clearance groove (403); and the inner wall of the clearance groove (403) is clearance-matched with the top of the bottle preform (5).

2. The preform detection and material return mechanism for plastic bottle processing according to claim 1, characterized in that: The fixed mounting seat (2) is fixedly mounted with a limiting slide groove (201) on one side of the stripping plate (402), and the inner side wall of the limiting slide groove (201) is slidably matched with one side of the stripping plate (402).

3. The preform detection and material return mechanism for plastic bottle processing according to claim 2, characterized in that: The inner bottom wall of the limiting sliding groove (201) is provided with an installation groove, in which a photoelectric sensor (202) is fixedly installed, and the photoelectric sensor (202) is electrically connected to a control panel.

4. The preform detection and material return mechanism for plastic bottle processing according to claim 1, characterized in that: The fixed mounting seat (2) is fixedly mounted with a material receiving cylinder (6) below the top of the material stripping plate (402).

5. The preform detection and material return mechanism for plastic bottle processing according to claim 1, characterized in that: The fixed mounting seat (2) is also fixedly mounted with a detection electric eye A (301) on the rear side of the material-returning assembly (4) for detecting whether the material-returning is completed.

6. The preform detection and material return mechanism for plastic bottle processing according to claim 1, characterized in that: The ratio range value of the horizontal distance between the bottom of the stripping plate (402) and the stripping pressing plate (404) and the horizontal distance between two adjacent bottle preforms (5) is 1-3.

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