A bottle preform conveying device

Abstract

The application discloses a bottle blank conveying device, which comprises a feeding mechanism, a buffering mechanism and a material using mechanism. The buffering mechanism comprises a conveying part and a surrounding barrier part surrounding the conveying part. The conveying part is drivingly arranged in the surrounding barrier part and is used for storing bottle blanks in cooperation with the surrounding barrier part. The material using mechanism comprises a receiving part, a first storage bin, a first sensor and a second sensor with height difference arranged in the first storage bin. The use speed of the bottle blanks in the receiving part is v0±δ, the maximum time of use speed fluctuation is t0, and the number of the bottle blanks stored in the first storage bin is not less than 2δt0. The conveying speed of the bottle blanks in the conveying part is v1±Δv, and v0≤v1≤v0+δ. The conveying part is used for increasing the speed to v1+Δv when the second sensor detects a lack of material, and restoring to v1 after a time delay. The conveying part is also used for decreasing the speed to v1-Δv when the first sensor detects an excess of material, and restoring to v1 after a time delay. The bottle blank conveying device can stabilize the conveying speed of the buffering mechanism, thereby reducing the rejection rate of the blanking machine.

Description

Technical Field

[0001] This invention relates to the field of blow molding machine technology, and in particular to a preform conveying device. Background Technology

[0002] In the prior art, the preforms continuously output from the feeding mechanism are arranged neatly by the preform scrambler. Since the feeding speed of the feeding mechanism fluctuates, in order to ensure the continuity of preform conveying, it is generally necessary to feed an excessive amount of preforms into the preform scrambler. This results in a large number of preforms accumulating at its inlet, which leads to a high preform rejection rate of the preform scrambler. Summary of the Invention

[0003] The purpose of this invention is to provide a preform conveying device, wherein the buffer mechanism can convey the preform to the feeding mechanism at a stable feeding rate that is slightly greater than the feeding rate of the feeding mechanism, thereby reducing the rejection rate of the preform sorting machine.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A preform conveying device, comprising: The feeding mechanism is used to transport bottle preforms; A buffer mechanism includes a conveyor and a baffle portion surrounding the conveyor. The conveyor is tractably disposed in the baffle portion. The conveyor is used to receive the bottle preform conveyed by the feeding mechanism and is also used to cooperate with the baffle portion to store a portion of the bottle preform. The feeding mechanism includes a receiving component, a first storage compartment disposed between the conveying component and the receiving component, a first sensor and a second sensor disposed in the first storage compartment and having a height difference, the first sensor being located above the second sensor, and the first storage compartment being used to store the preform input by the conveying component and output it to the receiving component. The speed at which the preform is used in the receiving unit is v0±δ, where v0 is the rated speed and ±δ is the fluctuation range of the speed. The maximum time of the speed fluctuation in the feeding mechanism is t0. The number of preforms stored in the first storage bin between the first sensor and the second sensor is not less than 2δt0. The conveying speed of the preform in the conveying component is v1±∆v, where v1 is the rated conveying speed, ±∆v is the adjustment range of the conveying speed, and v0≤v1≤v0+δ; the conveying component is used to increase the speed to v1+∆v when the second sensor detects a shortage of material, and then return to v1 after a first set time delay; the conveying component is also used to decrease the speed to v1-∆v when the first sensor detects an excess of material, and then return to v1 after a second set time delay.

[0005] Preferably, the first storage compartment is located below the discharge end of the conveyor and above the receiving component.

[0006] More preferably, the enclosure extends beyond the discharge end of the conveyor along the conveying direction, and the first storage bin is located directly below the extended portion of the enclosure.

[0007] Preferably, v1-∆v≤v0-δ.

[0008] Preferably, the buffer mechanism further includes a second storage compartment disposed between the discharge end of the feeding mechanism and the conveying component, a third sensor and a fourth sensor disposed in the second storage compartment and having a height difference, the third sensor being located above the fourth sensor, and the second storage compartment being used to store the preform input by the feeding mechanism and output it to the conveying component.

[0009] More preferably, the number of preforms stored in the second storage compartment between the third sensor and the fourth sensor is not less than 2∆vt0.

[0010] More preferably, the conveyor is further configured to increase speed to v when both the second sensor and the fourth sensor simultaneously detect a material shortage. max , where v max ≥v1+∆v.

[0011] More preferably, the second storage compartment is a hopper shape that is wider at the top and narrower at the bottom, and an adjustment plate is provided at the bottom opening for adjusting the size of the opening.

[0012] More preferably, the adjusting plate is located on the bottom side of the second storage compartment facing the conveyor, and the angle between the sliding adjustment direction of the adjusting plate and the feeding direction of the conveyor is an acute angle.

[0013] More preferably, the feeding mechanism conveys the preform in an upward inclined direction, with its discharge end located directly above the second storage chamber.

[0014] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art: The preform conveying device of the present invention has the following advantages: The buffer mechanism can store a portion of the preforms through the cooperation of the conveyor and the enclosure, thereby stabilizing the feeding speed of the conveyor and avoiding the influence of fluctuations in the feeding speed of the feeding mechanism. By setting up a first storage bin, fluctuations in the material feeding speed of the material feeding mechanism can be addressed, thereby preventing large fluctuations in the feeding speed of the buffer mechanism and further ensuring the stability of the feeding speed of the buffer mechanism. By coordinating the dynamic storage of preforms by the buffer mechanism and the static storage of preforms in the first storage bin, the conveyor can deliver materials to the feeding mechanism at a stable rate that is slightly higher than the feeding mechanism's consumption rate of preforms. This avoids excessive conveying that would cause preforms to accumulate at the entrance of the feeding mechanism, thereby reducing the rejection rate of the preform feeder and ensuring that its preform feeding performance is not affected. Attached Figure Description

[0015] Appendix Figure 1 This is a schematic diagram of the preform conveying device according to a specific embodiment of the present invention; Appendix Figure 2 This is a side view of the preform conveying device according to a specific embodiment of the present invention.

[0016] Among them: 1. Feeding mechanism; 2. Buffer mechanism; 21. Conveying component; 22. Enclosure section; 23. Second storage compartment; 24. Third sensor; 25. Fourth sensor; 26. Adjustment plate; 3. Material feeding mechanism; 31. Receiving component; 32. First storage compartment; 33. First sensor; 34. Second sensor. Detailed Implementation

[0017] The technical solution of the present invention will be further described below with reference to specific embodiments and accompanying drawings.

[0018] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the embodiments of the invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0019] In the description of the embodiments of the present invention, it should be understood that the terms "length", "inner", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the embodiments of the present invention.

[0020] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of the present invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0021] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0022] In embodiments of the present invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0023] The following disclosure provides many different implementations or examples for carrying out different structures of the embodiments of the present invention. To simplify the disclosure of the embodiments of the present invention, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the embodiments of the present invention. Furthermore, reference numerals and / or reference letters may be repeated in different examples of the embodiments of the present invention; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various implementations and / or arrangements discussed.

[0024] See Figure 1-2 As shown, this embodiment provides a preform conveying device, including a feeding mechanism 1, a buffer mechanism 2 and a feeding mechanism 3 arranged sequentially along the feeding direction, wherein the feeding mechanism 1 is used to convey the preform from the outside to the buffer mechanism 2.

[0025] The aforementioned buffer mechanism 2 includes a conveyor 21 and a retaining portion 22 surrounding the conveyor 21. The conveyor 21 is tractably disposed within the retaining portion 22. The conveyor 21 is used to receive bottle preforms conveyed by the feeding mechanism 1, and the conveyor 21 is also used to store a portion of the bottle preforms in conjunction with the retaining portion 22. Because the buffer mechanism 2 can store a portion of the bottle preforms through the cooperation of the conveyor 21 and the retaining portion 22, the feeding speed of the conveyor 21 can be stabilized, avoiding the influence of fluctuations in the feeding speed of the feeding mechanism 1.

[0026] The material feeding mechanism 3 mentioned above includes a receiving component 31, a first storage chamber 32 disposed between the conveying component 21 and the receiving component 31, a first sensor 33 and a second sensor 34 disposed in the first storage chamber 32 and having a height difference. The first sensor 33 is located above the second sensor 34. The first storage chamber 32 is used to store the bottle preforms input by the conveying component 21 and output them to the receiving component 31. In this embodiment, the receiving component 31 is a preform sorting machine.

[0027] The speed at which the preform is used in the receiving unit 31 is v0±δ, where v0 is the rated speed and ±δ is the fluctuation range of the speed, i.e., the speed range of the preform is between v0-δ and v0+δ. The maximum time for the speed fluctuation in the feeding mechanism 3 is t0 (including the self-processing time of the feeding mechanism 3 and the time of other factors). The number of preforms stored in the first storage bin 32 between the first sensor 33 and the second sensor 34 is not less than 2δt0.

[0028] The conveying speed of the preform in the conveying component 21 is v1±∆v, where v1 is the rated conveying speed and ±∆v is the adjustment range of the conveying speed. That is, the normal conveying speed of the preform can be adjusted between v1-∆v and v1+∆v.

[0029] Wherein, v0≤v1≤v0+δ, this setting ensures that the rated conveying speed of the conveyor 21 does not exceed the upper limit of the speed at which the preforms are used in the feeding mechanism 3, so that the conveyor 21 conveys the material to the feeding mechanism 3 at a stable feeding speed that is slightly greater than the feeding speed at which the feeding mechanism 3 consumes preforms. This avoids excessive conveying that causes preforms to accumulate at the entrance of the feeding mechanism 3, thereby reducing the preform rejection rate of the preform sorting machine and ensuring that its preform sorting performance is not affected.

[0030] In this embodiment, v1-∆v≤v0-δ, this setting ensures that the minimum conveying speed of the conveyor 21 does not exceed the lower limit of the preform usage speed in the feeding mechanism 3, thus ensuring continuous feeding of the feeding mechanism 3.

[0031] During operation, the conveyor 21 is first controlled to run at a speed v1, and then the real-time conveying speed of the conveyor 21 is adjusted according to the detection of the second sensor 34 and the first sensor 33. When the second sensor 34 does not detect the preform, the conveyor 21 is accelerated to v1+∆v until the second sensor 34 detects the preform again. After a first set time delay, the conveyor 21 is restored to v1. When the first sensor 33 detects the preform, the conveyor 21 is slowed down to v1-∆v until the first sensor 33 no longer detects the preform. After a second set time delay, the conveyor 21 is restored to v1.

[0032] See Figure 2As shown, the first storage chamber 32 is located below the discharge end of the conveyor 21 and above the receiving member 31. In this embodiment, the barrier portion 22 extends beyond the discharge end of the conveyor 21 along the conveying direction, and the first storage chamber 32 is located directly below the extended portion of the barrier portion 22. After the preform on the conveyor 21 is conveyed to the right to the discharge end, it falls downward into the first storage chamber 32.

[0033] See Figure 1 As shown, the buffer mechanism 2 further includes a second storage chamber 23 located between the discharge end of the feeding mechanism 1 and the conveyor 21, a third sensor 24 and a fourth sensor 25 located in the second storage chamber 23 and having a height difference, with the third sensor 24 positioned above the fourth sensor 25. The second storage chamber 23 is used to store the preforms input by the feeding mechanism 1 and output them to the conveyor 21. In this embodiment, all four sensors are photoelectric sensors.

[0034] Similarly, the number of preforms stored in the second storage compartment 23 between the third sensor 24 and the fourth sensor 25 is not less than 2∆vt0.

[0035] During operation, the feeding mechanism 1 needs to be controlled based on the detection of the fourth sensor 25 and the third sensor 24. When the fourth sensor 25 fails to detect the preform, the warehouse needs to be replenished in time. This warehouse is used to supply materials to the feeding mechanism 1. When the third sensor 24 detects the preform, the feeding speed of the feeding mechanism 1 is reduced or the feeding mechanism 1 is paused until the third sensor 24 no longer detects the preform, and the feeding mechanism 1 is reset. When the second sensor 34 and the fourth sensor 25 simultaneously detect a material shortage, the conveyor 21 is accelerated to v. max , where v max ≥v1+∆v, to replenish materials for the material-using mechanism 3 in an emergency, and at the same time the system alarms for material shortage.

[0036] See Figure 2 As shown, the second storage bin 23 is a hopper shape that is wider at the top and narrower at the bottom. An adjustment plate 26 is provided at the bottom opening to adjust the opening size according to the rated conveying speed v1 of the conveyor 21.

[0037] In this embodiment, the adjusting plate 26 is located on the bottom side of the second storage bin 23 facing the conveyor 21. The angle between the sliding adjustment direction of the adjusting plate 26 and the feeding direction of the conveyor 21 is an acute angle, so as to facilitate the smooth output of materials.

[0038] See Figure 2 As shown, the feeding mechanism 1 conveys the bottle preform in an upward inclined direction, and its discharge end is located directly above the second storage chamber 23.

[0039] This preform conveying device can control the material source with large conveying speed fluctuations to a material source with smaller conveying speed fluctuations, and then send the material with a stable conveying speed to the material receiving mechanism 3, thereby reducing the adverse effects of excessive conveying speed on the material receiving mechanism 3.

[0040] In this embodiment, the material feeding mechanism 3 feeds materials one by one, standing upright; the conveyor 21 theoretically feeds materials in several parallel rows, lying flat. Example parameters: Material feeding mechanism 3: Theoretical material feeding speed v0 = 25 pieces / s (equivalent to a material movement speed of 0.85m / s), material feeding fluctuation δ = 2.7 pieces / s (equivalent to a speed of 0.09m / s), preset buffer time t0 = 5s.

[0041] The third buffer space (i.e., the space between the second sensor 34 and the first sensor 33) is slightly larger than 2δt0 = 27.

[0042] In the second buffer zone (i.e., the space between the conveyor 21 and the enclosure 22): the feeding speed of the conveyor 21 is v1 = 27 pieces / s (equivalent to a conveyor belt speed of 0.52 m / s), and the self-adjusting feeding speed ∆v = 7 pieces / s (equivalent to a self-adjusting belt speed of 0.14 m / s). The preset maximum speed v... max =39 pieces / s (equivalent to 21 conveyor belts with a speed of 0.88m / s).

[0043] The first buffer space (i.e., the space between the fourth sensor 25 and the third sensor 24) is greater than 2∆vt0=70.

[0044] The above embodiments are only for illustrating the technical concept and features of the present invention. Their purpose is to enable those skilled in the art to understand the content of the present invention and implement it. They should not be used to limit the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A preform conveying device, characterized in that, include: The feeding mechanism is used to transport bottle preforms; A buffer mechanism includes a conveyor and a baffle portion surrounding the conveyor. The conveyor is tractably disposed in the baffle portion. The conveyor is used to receive the bottle preform conveyed by the feeding mechanism and is also used to cooperate with the baffle portion to store a portion of the bottle preform. The feeding mechanism includes a receiving component, a first storage compartment disposed between the conveying component and the receiving component, a first sensor and a second sensor disposed in the first storage compartment and having a height difference, the first sensor being located above the second sensor, and the first storage compartment being used to store the preform input by the conveying component and output it to the receiving component. The speed at which the preform is used in the receiving unit is v0±δ, where v0 is the rated speed and ±δ is the fluctuation range of the speed. The maximum time of the speed fluctuation in the feeding mechanism is t0. The number of preforms stored in the first storage bin between the first sensor and the second sensor is not less than 2δt0. The conveying speed of the preform in the conveying component is v1±∆v, where v1 is the rated conveying speed, ±∆v is the adjustment range of the conveying speed, and v0≤v1≤v0+δ; the conveying component is used to increase the speed to v1+∆v when the second sensor detects a shortage of material, and then return to v1 after a first set time delay; the conveying component is also used to decrease the speed to v1-∆v when the first sensor detects an excess of material, and then return to v1 after a second set time delay.

2. The preform conveying device according to claim 1, characterized in that: The first storage compartment is located below the discharge end of the conveyor and above the receiving component.

3. The preform conveying device according to claim 2, characterized in that: The enclosure extends beyond the discharge end of the conveyor along the conveying direction, and the first storage bin is located directly below the extended portion of the enclosure.

4. The preform conveying device according to claim 1, characterized in that: in, v1-∆v≤v0-δ.

5. The preform conveying device according to claim 1, characterized in that: The buffer mechanism further includes a second storage compartment located between the discharge end of the feeding mechanism and the conveying component, a third sensor and a fourth sensor located in the second storage compartment and having a height difference, the third sensor being located above the fourth sensor, and the second storage compartment being used to store the preform input by the feeding mechanism and output it to the conveying component.

6. The preform conveying device according to claim 5, characterized in that: The number of preforms stored in the second storage compartment between the third and fourth sensors is not less than 2∆vt0.

7. The preform conveying device according to claim 5, characterized in that: The conveyor is also configured to increase speed to v when both the second and fourth sensors simultaneously detect a material shortage. max , where v max ≥v1+∆v.

8. The preform conveying device according to claim 5, characterized in that: The second storage compartment is a hopper shape that is wider at the top and narrower at the bottom, and an adjustment plate is provided at the bottom opening for adjusting the size of the opening.

9. The preform conveying device according to claim 8, characterized in that: The adjusting plate is located on the bottom side of the second storage compartment facing the conveyor, and the angle between the sliding adjustment direction of the adjusting plate and the feeding direction of the conveyor is an acute angle.

10. The preform conveying device according to claim 5, characterized in that: The feeding mechanism conveys the preform in an upward inclined direction, with its discharge end located directly above the second storage compartment.

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