Automatic detecting and removing device for bottle caps with materials

Abstract

The utility model discloses an automatic detecting and removing device for bottle caps with materials, which comprises a high-speed identification device, a master control unit, an encoder, a cap removing valve and a collecting box, the high-speed identification device comprises two correlation optical fibers and a correlation optical fiber amplifier connected with the two correlation optical fibers, the correlation optical fiber amplifier, the encoder and the cap removing valve are connected with the master control unit, the two correlation optical fibers are installed on the two sides of a conveying belt, and light beams formed by the correlation optical fibers are higher than bottle caps on the conveying belt. The cover removing valve and the collecting box are oppositely located on the two sides of the conveying belt and located on the downstream of the two correlation optical fibers. According to the utility model, the problem that the bottle caps with materials cannot be accurately identified and removed is solved, the probability that the processing machines of downstream beer canning factories stop due to cap clamping is reduced, the line stop loss is reduced, and the production efficiency is improved; meanwhile, the materials of the bottle cap with the materials are prevented from entering beer, and the food safety risk of consumers is reduced.

Description

Technical Field

[0001] The utility model belongs to the field of mechanical technology, and in particular relates to an automatic detection and rejection device for bottle caps with materials. Background Art

[0002] Beer bottle caps are an indispensable part of bottled beer, widely used worldwide and produced in enormous quantities, with annual consumption reaching tens of billions. The appearance and manufacturing process of bottle caps are largely similar, all using rolled tinplate as the primary raw material. They are cut by a tin cutting machine, then varnished and baked in a coating machine and oven. Then, they are printed by a printer and laser-printed with a QR code scanner to create a pattern that meets design, process, and quality requirements. Then, they are punched and formed on a punch press, resulting in the prototype beer bottle cap. Finally, a molding machine is used to press and install an internal leak-proof gasket. After being inspected and rejected by a visual inspection system, a standard bottle cap is created.

[0003] Due to the huge volume and complicated process, quality control is particularly important. Among them, the CVS comprehensive visual quality inspection system installed in the back section of the molding machine is a key equipment to ensure the quality of bottle caps. The existing CVS comprehensive visual inspection system uses two industrial cameras installed on the bottle cap processing channel of the molding machine to take a photo of each bottle cap to obtain the front and back image information of the bottle cap, and then transmits the image to the computer through the high-speed camera image acquisition card. The dedicated image processing software is used to split the image into multiple areas of pixels and grayscale values and other key information that reflects the image characteristics. It is compared with the set standard image to determine whether the parameters of each area of the bottle cap are within the tolerance of the standard set value. If it exceeds the tolerance range, it is judged as a defective bottle cap. After the program operation, the rejection signal of the high-speed IO output end on the computer is tracked and positioned by the encoder, and the defective bottle caps are rejected by blowing out compressed gas through the high-speed solenoid valve and fall into the waste collection bucket.

[0004] There is an extremely special defect - bottle cap with material, which is a defect that the CVS system cannot accurately identify and eliminate. The beer filling machines in downstream beer filling plants are extremely sensitive to this bottle cap with material defect. This is because this bottle cap with material can cause the equipment to jam and shut down, which may cause equipment damage and increase DT time (a timing method used by breweries to calculate the loss of factory equipment caused by supplier product defects). More importantly, the material may enter the beer, posing a food safety risk to consumers. This is a major food safety hazard that beer manufacturers and bottle cap suppliers cannot accept. Utility Model Content

[0005] Technical content

[0006] In view of the above problems, the utility model proposes an automatic detection and rejection device for bottle caps with material.

[0007] The technical solutions adopted in this utility model are as follows:

[0008] A device for automatically detecting and rejecting bottle caps with material, comprising: a high-speed recognition device, a main control unit, an encoder, a cap rejection valve and a collection box. The high-speed recognition device comprises two opposing optical fibers and an opposing optical fiber amplifier connected to the two opposing optical fibers. The opposing optical fiber amplifier, the encoder and the cap rejection valve are respectively connected to the main control unit. The two opposing optical fibers are installed on both sides of a conveyor belt. The light beams formed by the opposing optical fibers are higher than the bottle caps on the conveyor belt. The cap rejection valve and the collection box are located on both sides of the conveyor belt relative to each other and downstream of the two opposing optical fibers.

[0009] Preferably, the light beam formed by the incident optical fiber is parallel to the bottle caps on the conveyor belt and is 0.5 mm higher than the upper edge of the bottle caps.

[0010] Preferably, the encoder should have a motion-related relationship with the conveyor belt, and the encoder is connected to the pulley shaft of the conveyor belt.

[0011] Preferably, the encoder adopts a 1000p / r incremental encoder.

[0012] Preferably, the general control unit is a programmable controller. After receiving the signal from the high-speed identification device, the general control unit starts to count the pulse signal from the encoder. When the pulse signal reaches a set number, the general control unit outputs a rejection signal to drive the cover removal valve to work.

[0013] Preferably, the cap removal valve is a high-speed electromagnetic valve, which blows out compressed gas after receiving a removal signal from the main control unit to remove the bottle caps from the conveyor belt and collect them in the collection box.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The utility model discloses an automatic detection and rejection device for bottle caps with material, which utilizes the characteristic that bottle caps with material are higher than normal bottle caps and uses a directed light beam to identify the height of the bottle caps with material, thereby solving the problem that bottle caps with material cannot be accurately identified and rejected, reducing the probability of machine stoppage due to cap jamming in downstream beer bottling factories, reducing line stoppage losses, and improving production efficiency; furthermore, the utility model avoids the material body of the bottle caps with material from entering the beer, thereby reducing the food safety risk for consumers. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below with reference to the accompanying drawings.

[0017] Figure 1 This is a schematic diagram of an automatic detection and rejection device for bottle caps with material according to a preferred embodiment of the present invention.

[0018] Figure 2 It is a schematic diagram of the bottle cap with material in the present utility model. DETAILED DESCRIPTION

[0019] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0020] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to direct connections, indirect connections through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0021] The following will illustrate the implementation methods of the present invention in conjunction with the drawings in the specification. It should be noted that the implementation methods involved in this specification are not exhaustive and do not represent the only implementation methods of the present invention. The following corresponding embodiments are only for the purpose of clearly illustrating the utility model content of the utility model patent and are not intended to limit its implementation methods. For ordinary technicians in this field, different forms of changes and modifications can be made on the basis of the description of these embodiments. All obvious changes or modifications that belong to the technical concept and utility model content of the present invention are also within the scope of protection of the present invention.

[0022] Figure 1This is a schematic diagram of an automatic detection and rejection device for bottle caps with materials according to a preferred embodiment of the utility model, comprising: a high-speed identification device 1, a general control unit 2, an encoder 3, a cap rejection valve 4 and a collection box 5. The high-speed identification device 1 further comprises two opposing optical fibers 11 and an opposing optical fiber amplifier 12 connected to the two opposing optical fibers 11. The opposing optical fiber amplifier 12, the encoder 3 and the cap rejection valve 4 are respectively connected to the general control unit 2. The two opposing optical fibers 11 are installed on both sides of the conveyor belt 6, one is a transmitting optical fiber and the other is a receiving optical fiber. The light beam formed by the opposing optical fiber 11 is higher than the bottle caps 7 on the conveyor belt 6. Preferably, the light beam formed by the opposing optical fiber 11 is parallel to the bottle caps 7 on the conveyor belt 6 and is about 0.5 mm higher than the upper mouth of the bottle caps. As shown Figure 2 As shown, taking advantage of the fact that bottle caps carrying pellets 8 are taller than normal bottle caps, the light beam emitted by the incident optical fiber 11 is used to detect whether the bottle caps passing on the conveyor belt 6 are bottle caps carrying pellets. If a normal bottle cap passes, the light beam is not blocked; if a bottle cap carrying pellets passes, the light beam is blocked. If a bottle cap carrying pellets 8 is identified, the high-speed recognition device 1 sends a recognition signal to the main control unit 2.

[0023] In a preferred embodiment, the encoder 3 is used to send a pulse signal to the main control unit 2. The encoder 3 should have a motion correlation with the conveyor belt 6 (or the bottle caps 7 on the conveyor belt), so that the conveyor belt advance distance corresponding to each pulse of the encoder 3 can be obtained. Preferably, the encoder 3 is connected to the pulley shaft of the conveyor belt 6 (not shown), that is, the shaft of the encoder 3 and the pulley shaft have a fixed speed ratio of 1:1. In other embodiments, the shaft of the encoder 3 and the pulley shaft can also have other speed ratios. In one embodiment, the encoder 3 can use an incremental encoder with 1000p / r (generating 1000 pulses per revolution). Preferably, the main control unit 2 is a programmable logic controller (PLC). After receiving the signal from the high-speed identification device 1, the main control unit 2 starts to count the pulse signal sent by the encoder 3. When the pulse signal reaches the set number, the main control unit 2 outputs a rejection signal to drive the cap removal valve 4 to work.

[0024] In a preferred embodiment, the cap removal valve 4 is located on either side of the conveyor belt 6 and downstream of the two optical fibers 11, opposite the collection box 5. The cap removal valve 4 is a high-speed solenoid valve. Upon receiving a rejection signal from the main control unit 2, the cap removal valve 4 releases compressed air, blowing the bottle caps from the conveyor belt 6 into the collection box 5.

[0025] The following describes in detail the workflow of the automatic detection and rejection device for pre-filled bottle caps according to a preferred embodiment of the present invention. Before the device is officially operational, the position of the rejection valve must be adjusted. Once the adjustment is complete and the pre-filled bottle caps can be correctly rejected, it can be officially put into operation. First, the production equipment operates by continuously lowering the finished bottle caps onto the conveyor belt, with the cap openings facing upward. The high-speed recognition device 1 of the device emits a beam of light, and the encoder 3 and the main control unit 2 begin operating. Upon identifying the pre-filled bottle caps, the reflection fiber 11 emits a recognition signal, which is amplified by the optical fiber amplifier 12 and transmitted to the main control unit 2. Upon receiving the recognition signal, the main control unit 2 begins counting the pulse signals from the encoder 3. The main control unit 2 itself has a high-speed counting function. When the pulse signals reach a set number, the main control unit 2 outputs a rejection signal to activate the rejection valve 4. The rejection valve 4, a high-speed solenoid valve, releases compressed air, removing the pre-filled bottle caps from the conveyor belt 6 and collecting them in the collection box 5. The set number is determined in advance based on the distance between the reflection fiber 11 and the rejection valve 4. That is, assuming that the distance between the incident optical fiber 11 and the decapping valve 4 is D, and the distance the conveyor belt 6 advances corresponding to each pulse of the encoder 3 is L (this value is known as mentioned above), the set quantity is D / L.

[0026] The utility model discloses an automatic detection and rejection device for bottle caps with material, which utilizes the characteristic that bottle caps with material are higher than normal bottle caps and uses a directed light beam to identify the height of the bottle caps with material, thereby solving the problem that bottle caps with material cannot be accurately identified and rejected, reducing the probability of machine stoppage due to cap jamming in downstream beer bottling factories, reducing line stoppage losses, and improving production efficiency; furthermore, the utility model avoids the material body of the bottle caps with material from entering the beer, thereby reducing the food safety risk for consumers.

[0027] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0028] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. An automatic detection and rejection device for bottle caps with material, characterized in that: include: A high-speed identification device, a main control unit, an encoder, a cap removal valve and a collection box. The high-speed identification device includes two opposing optical fibers and an opposing optical fiber amplifier connected to the two opposing optical fibers. The opposing optical fiber amplifier, the encoder and the cap removal valve are respectively connected to the main control unit. The two opposing optical fibers are installed on both sides of the conveyor belt. The light beams formed by the opposing optical fibers are higher than the bottle caps on the conveyor belt. The cap removal valve and the collection box are located on both sides of the conveyor belt relative to each other and downstream of the two opposing optical fibers.

2. The automatic detection and rejection device for bottle caps with material according to claim 1 is characterized in that: The light beam formed by the incident optical fiber is parallel to the bottle cap on the conveyor belt and is 0.5 mm higher than the upper edge of the bottle cap.

3. The automatic detection and rejection device for bottle caps with material according to claim 2 is characterized in that: The encoder has a motion-related relationship with the transmission belt, and the encoder is connected to the pulley shaft of the transmission belt.

4. The automatic detection and rejection device for bottle caps with material according to claim 3 is characterized in that: The encoder adopts a 1000p / r incremental encoder.

5. The automatic detection and rejection device for bottle caps with material according to claim 1 is characterized in that: The cap rejection valve adopts a high-speed electromagnetic valve. After receiving the rejection signal from the main control unit, it blows out compressed gas to reject the bottle caps with material from the conveyor belt and collect them in the collection box.

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