A small automatic inspection, rejection and replenishment system for checking the defects of pillow packs of cigarettes

Abstract

This invention relates to the field of twisted dough stick packaging, and more particularly to an automatic defect inspection, rejection, and replenishment system for small twisted dough stick pillow-type packaging. The invention includes a material preparation mechanism, a feeding mechanism, a detection mechanism, a replenishment mechanism, a rejection mechanism, and a packaging mechanism. The feeding mechanism is located on one side of the material preparation mechanism's outlet, with a conveyor belt at the top center. The detection mechanism is located directly above the conveyor belt's inlet and on one side of the material preparation mechanism's outlet. The replenishment mechanism is located on one or both sides of the conveyor belt, and on one side of the detection mechanism. The rejection mechanism is located between the detection mechanism and the replenishment mechanism, and directly above the conveyor belt. One end of the rejection mechanism has a rejection channel located on one side of the conveyor belt, and a collection box is located below the outlet end of the rejection channel. The packaging mechanism is located at one end of the feeding mechanism and at the end of the conveyor belt's outlet.

Description

Technical Field

[0001] This invention relates to the field of twisted dough stick packaging technology, and in particular to an automatic defect inspection, rejection and replenishment system for small twisted dough stick pillow-type packaging. Background Technology

[0002] Pillow-type packaging machines are continuous packaging machines with very high packaging capacity, suitable for various sizes of food and non-food packaging. Pillow-type food packaging machines are widely used in the instant noodle, rice cracker, shrimp chip, French fries, rice cracker, egg roll, and other fried and puffed food industries, as well as in the fruit and vegetable and daily chemical industries. They are suitable for packaging regular or irregularly shaped objects.

[0003] However, during food production and packaging, defective or empty packages may exist, or the product may be damaged. This necessitates manual sorting of defective products on the conveyor line during packaging. Furthermore, after defective products are removed, intact food products must be added to the conveyor line. Shortages in the feed can lead to empty packages in subsequent continuous packaging, requiring further manual inspection and wasting packaging materials, ultimately resulting in slow production efficiency. Therefore, an automated defect inspection, rejection, and replenishment system for small twisted roll-style packaging is needed. Summary of the Invention

[0004] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in the description and other accompanying drawings.

[0005] The purpose of this invention is to overcome the above-mentioned shortcomings and provide an automatic inspection, rejection and replenishment system for defects in small twisted dough stick pillow-shaped packaging, so as to solve the existing problems.

[0006] To achieve the above objectives, the technical solution of the present invention is: an automatic inspection, rejection, and replenishment system for defects in small twisted dough stick pillow-type packaging, comprising a material preparation mechanism, a feeding mechanism, a detection mechanism, a replenishment mechanism, a rejection mechanism, and a packaging mechanism. The feeding mechanism is located on one side of the material preparation mechanism's outlet, and a conveyor belt is provided at the top center of the feeding mechanism. The detection mechanism is located directly above the conveyor belt's inlet and on one side of the material preparation mechanism's outlet. The replenishment mechanism is located on one or both sides of the conveyor belt and on one side of the detection mechanism. The rejection mechanism is located between the detection mechanism and the replenishment mechanism and directly above the conveyor belt. One end of the rejection mechanism has a rejection channel located on one side of the conveyor belt, and a collection box is provided below the outlet end of the rejection channel. The packaging mechanism is located at one end of the feeding mechanism and at the end of the conveyor belt's outlet.

[0007] In some embodiments, the material balancing mechanism includes a material balancing box, which contains a material balancing tray, and the top periphery of the material balancing tray is provided with a plurality of material balancing grooves.

[0008] In some embodiments, the detection mechanism is mounted on the conveyor belt via a first bracket. The detection mechanism includes a support plate located on top of the first bracket. The support plate has an opening in the middle, which is directly above the conveyor belt. A support rod is provided on one side of the top of the support plate. An infrared light source device is mounted on the support rod via a first fixing frame, and the infrared light source device is located directly above the opening. A machine vision imaging module device is mounted directly above the infrared light source device via a second fixing frame.

[0009] In some embodiments, the feeding mechanism includes a fixed bracket disposed on one side of the conveyor belt, a feeding bin mounted on the fixed bracket, a blocking member at the bottom of one side of the feeding bin and inserted into the feeding bin, a second bracket disposed on the opposite side of the fixed bracket and the conveyor belt, a first cylinder disposed at the top of the second bracket, a first pusher disposed at the output end of the first cylinder, the first pusher passing through the fixed bracket and the feeding bin to the other side, a second cylinder disposed at the bottom of the second bracket, a second pusher disposed at the output end of the second cylinder, the second pusher disposed on the other side of the fixed bracket and parallel to the conveyor belt.

[0010] In some embodiments, the rejection mechanism includes a third bracket with a drive motor and a rejection plate located directly above the conveyor belt and at the inlet end of the rejection channel.

[0011] In some embodiments, the conveyor belt is provided with a plurality of isolation blocks, and the distance between the isolation blocks is the same.

[0012] In some embodiments, the replenishment bin is provided with a pressure block, which is connected to the top of the replenishment bin by a pull rope.

[0013] In some embodiments, one end of the pull rope is connected to the fixing member through the top of the replenishment bin.

[0014] In some embodiments, the support plate is slidably connected to the first bracket.

[0015] In some embodiments, the support rod is slidably connected to the first fixing frame and the second fixing frame.

[0016] In some embodiments, both the first fixing bracket and the second fixing bracket are provided with sliding holes.

[0017] In some embodiments, the testing apparatus further includes a protective housing mounted on the support plate.

[0018] In some embodiments, an anti-slip plate is provided at the second pusher frame above the output belt.

[0019] In some embodiments, the blocking element is a pin.

[0020] In some embodiments, there are at least two feeding mechanisms, which are distributed alternately on both sides of the conveyor belt.

[0021] By adopting the above technical solution, the beneficial effects of the present invention are as follows: The present invention places the small twisted dough rolls to be packaged into the material sorting mechanism, which then orderly feeds the small twisted dough rolls onto the conveyor belt of the feeding mechanism. The detection mechanism above the conveyor belt detects damaged small twisted dough rolls. When a damaged small twisted dough roll is detected, the set rejection mechanism removes the damaged small twisted dough roll from the conveyor belt. Then, through the rejection channel on one side, the damaged small twisted dough roll is removed along the rejection channel to the collection box. The small twisted dough rolls removed from the conveyor belt need to be replenished by the material replenishment mechanism, and then orderly enter the packaging mechanism for packaging. No manual screening is required, and the rejected ones can be replenished in time, increasing production efficiency.

[0022] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure.

[0023] Undoubtedly, such and other objects of the present invention will become more apparent after the following detailed description of the preferred embodiments, which are illustrated in various accompanying drawings and figures.

[0024] To make the above and other objects, features and advantages of the present invention more apparent and understandable, one or more preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0025] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0026] In the accompanying drawings, the same parts use the same reference numerals, and the drawings are schematic and not necessarily drawn to actual scale.

[0027] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only one or more embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on such drawings without creative effort.

[0028] Figure 1This is a schematic diagram of the automatic defect inspection, rejection and replenishment system for small twisted dough pillow-type packaging according to some embodiments of the present invention;

[0029] Figure 2 This is an enlarged view of the structure of A in some embodiments of the present invention;

[0030] Figure 3 This is an enlarged view of the structure of the rejection mechanism in some embodiments of the present invention;

[0031] Figure 4 This is a schematic diagram of the feeding mechanism according to some embodiments of the present invention;

[0032] Figure 5 This is an enlarged view of the structure of B in some embodiments of the present invention;

[0033] Figure 6 These are schematic diagrams of the structure of the fixing bracket according to some embodiments of the present invention;

[0034] Figure 7 This is a schematic diagram of the structure of the detection mechanism in some embodiments of the present invention.

[0035] Explanation of reference numerals in the attached figures:

[0036] 1. Material handling mechanism;

[0037] 11. Material bin; 12. Material tray; 13. Material trough;

[0038] 2. Feeding mechanism;

[0039] 21. Conveyor belt; 22. Spacer block;

[0040] 3. Testing institutions;

[0041] 31. First bracket; 32. Support plate; 33. Opening; 34. Support rod; 35. Infrared light source device; 36. Machine vision image acquisition module device; 37. First fixing frame; 38. Second fixing frame; 39. Protective shell;

[0042] 4. Feeding mechanism;

[0043] 41. Fixed bracket; 42. Feeding bin; 43. Blocking component; 44. Second bracket; 45. First cylinder; 46. First push frame; 47. Second cylinder; 48. Second push frame; 49. Pressure block;

[0044] 5. Elimination of institutions;

[0045] 51. Rejection channel; 52. Collection box; 53. Third support; 54. Drive motor; 55. Rejection plate;

[0046] 6. Packaging facilities;

[0047] 7. Sliding hole;

[0048] 8. Pull the rope;

[0049] 9. Anti-skid board;

[0050] 10. Fasteners. Detailed Implementation

[0051] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0052] Furthermore, in the description of this invention, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0053] In this 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 unit; 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. However, specifying a direct connection indicates that the two main bodies are not connected through a transitional structure, but rather formed as a whole through a connecting structure. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0054] In this invention, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0055] The specific embodiments of the present invention will now be described with reference to the accompanying drawings.

[0056] Reference Figure 1 , Figure 1 This is a schematic diagram of the automatic inspection, rejection, and replenishment system for small twisted dough stick pillow-type packaging defects according to some embodiments of the present invention.

[0057] According to some embodiments of the present invention, the present invention provides an automatic inspection, rejection and replenishment system for defects in small twisted dough stick pillow-type packaging, including a material preparation mechanism 1, a feeding mechanism 2, a detection mechanism 3, a replenishment mechanism 4, a rejection mechanism 5 and a packaging mechanism 6. The feeding mechanism 2 is disposed on one side of the outlet of the material preparation mechanism 1, and a conveyor belt 21 is provided in the middle of the top of the feeding mechanism 2. The detection mechanism 3 is disposed directly above the inlet of the conveyor belt 21 and located on one side of the outlet of the material preparation mechanism 1. The replenishment mechanism 4 is disposed on one or both sides of the conveyor belt 21 and located on one side of the detection mechanism 3. The rejection mechanism 5 is disposed between the detection mechanism 3 and the replenishment mechanism 4 and located directly above the conveyor belt 21. One end of the rejection mechanism 5 is provided with a rejection channel 51, which is located on one side of the conveyor belt 21. A collection box 52 is provided below the outlet end of the rejection channel 51. The packaging mechanism 6 is disposed at one end of the feeding mechanism 2 and located at the end of the outlet of the conveyor belt 21.

[0058] The small twisted dough sticks to be packaged are placed into the material sorting mechanism 1. The material sorting mechanism 1 organizes the small twisted dough sticks and feeds them in an orderly manner onto the conveyor belt 21 on the feeding mechanism 2. The detection mechanism 3 above the conveyor belt 21 detects damaged small twisted dough sticks. When a damaged small twisted dough stick is detected, the set rejection mechanism 5 removes the damaged small twisted dough stick from the conveyor belt 21. Then, the damaged small twisted dough stick is removed into the collection box 52 through the rejection channel 51 on one side. The small twisted dough sticks removed from the conveyor belt 21 need to be replenished by the material replenishment mechanism 4. Then, they enter the packaging mechanism 6 in an orderly manner for packaging. There is no need for manual screening, and the rejected ones can be replenished in time, which increases the production efficiency.

[0059] Reference Figure 1 , Figure 1 This is a schematic diagram of the automatic inspection, rejection, and replenishment system for small twisted dough stick pillow-type packaging defects according to some embodiments of the present invention.

[0060] According to some embodiments of the present invention, optionally, the material balancing mechanism 1 includes a material balancing box 11, a material balancing tray 12 is provided inside the material balancing box 11, and a plurality of material balancing grooves 13 are provided around the top periphery of the material balancing tray 12.

[0061] By placing the small twisted dough sticks into the material box 11, the material box 12 is rotated to allow the small twisted dough sticks to enter the material trough 13, and then they fall orderly from the outlet end of the material box 11 onto the conveyor belt 21, which facilitates subsequent inspection and replenishment.

[0062] Reference Figure 1 and 7 , Figure 1 This is a schematic diagram of the automatic defect inspection, rejection and replenishment system for small twisted dough pillow-type packaging according to some embodiments of the present invention; Figure 7 This is a schematic diagram of the structure of the detection mechanism in some embodiments of the present invention.

[0063] According to some embodiments of the present invention, optionally, the detection mechanism 3 is mounted on the conveyor belt 21 via a first bracket 31. The detection mechanism 3 includes a support plate 32, which is disposed on the top of the first bracket 31. The support plate 32 has an opening 33 in the middle, and the opening 33 is located directly above the conveyor belt 21. A support rod 34 is provided on one side of the top of the support plate 32. An infrared light source device 35 is mounted on the support rod 34 via a first fixing frame 37, and the infrared light source device 35 is located directly above the opening 33. A machine vision imaging module device 36 is mounted directly above the infrared light source device 35 via a second fixing frame 38.

[0064] The infrared light source device 35 is aligned with the opening 33, and then the machine vision imaging module device 36 is aligned with the infrared light source device 35. The positions are adjusted so that the machine vision imaging module device 36, the infrared light source device 35, and the conveyor belt 21 are in a straight line. This allows the detection of small twisted rolls on the conveyor belt 21. Machine vision inspection can not only detect defects in incoming materials, but also detect whether there are missing materials on the pillow packaging machine, which facilitates subsequent rejection and replenishment. It also avoids empty packages during subsequent continuous packaging, which would require manual inspection and waste packaging materials. In addition, the machine vision lighting system uses an infrared light source with a wavelength of 940nm, which can avoid the unexpected reflection problem caused by the stainless steel used in food machinery.

[0065] Reference Figure 1 and Figure 4-6 , Figure 1 This is a schematic diagram of the automatic defect inspection, rejection and replenishment system for small twisted dough pillow-type packaging according to some embodiments of the present invention; Figure 4 This is a schematic diagram of the feeding mechanism according to some embodiments of the present invention; Figure 5 This is an enlarged view of the structure of B in some embodiments of the present invention; Figure 6 This is a schematic diagram of the structure of the fixing bracket according to some embodiments of the present invention.

[0066] According to some embodiments of the present invention, optionally, the feeding mechanism 4 includes a fixed bracket 41, which is disposed on one side of the conveyor belt 21. The fixed bracket 41 is equipped with a feeding bin 42. A blocking member 43 is provided at the bottom of one side of the feeding bin 42 and is inserted into the feeding bin 42. A second bracket 44 is provided on the opposite side of the fixed bracket 41 from the conveyor belt 21. A first cylinder 45 is provided at the top of the second bracket 44. A first pusher 46 is provided at the output end of the first cylinder 45. The first pusher 46 passes through the fixed bracket 41 and the feeding bin 42 to the other side. A second cylinder 47 is provided at the bottom of the second bracket 44. A second pusher 48 is provided at the output end of the second cylinder 47. The second pusher 48 is disposed on the other side of the fixed bracket 41 and is parallel to the conveyor belt 21.

[0067] The small twisted dough sticks are first placed horizontally into the replenishment bin 42, and then the small twisted dough sticks are fixed in place by inserting the blocking member 43 into the replenishment bin 42. The replenishment bin 42 is then installed on the fixed bracket 41. When replenishment is needed, the blocking member 43 is pulled out in advance, allowing the small twisted dough sticks to fall to the bottom. Then, the first cylinder 45 moves to drive the first pusher 46 to push the small twisted dough sticks from the side to the front of the second pusher 48. Then, the second cylinder 47 is activated to allow the second pusher 48 to push the small twisted dough sticks onto the conveyor belt 21, thus completing the automatic replenishment effect after rejection.

[0068] Reference Figure 1 and 3 , Figure 1 This is a schematic diagram of the automatic defect inspection, rejection and replenishment system for small twisted dough pillow-type packaging according to some embodiments of the present invention; Figure 3 This is an enlarged view of the rejection mechanism in some embodiments of the present invention.

[0069] According to some embodiments of the present invention, optionally, the rejection mechanism 5 includes a third support 53, the third support 53 is provided with a drive motor 54, the drive motor 54 is provided with a rejection plate 55, the rejection plate 55 is located directly above the conveyor belt 21, and the rejection plate 55 is located at the inlet end of the rejection channel 51.

[0070] The drive motor 54 drives the rejection plate 55 to rotate, removing the small twisted dough sticks from the conveyor belt 21 into the rejection channel 51, where they are collected by the collection box 52, thus preventing the damaged twisted dough sticks from falling to the ground and becoming difficult to clean up.

[0071] Reference Figure 2 , Figure 2 This is an enlarged view of the structure of A in some embodiments of the present invention.

[0072] According to some embodiments of the present invention, optionally, the conveyor belt 21 is provided with a plurality of isolation blocks 22, and the distance between the isolation blocks 22 is the same. In order to facilitate the inspection mechanism 3 to perform inspection, and at the same time to perform individual rejection and continue to quickly replenish the material after rejection, the small twisted rolls are prevented from accumulating on the conveyor belt 21, or from being rejected due to insufficient spacing.

[0073] Reference Figure 5 , Figure 5 This is an enlarged view of the structure of B in some embodiments of the present invention.

[0074] According to some embodiments of the present invention, optionally, the replenishment bin 42 is provided with a pressure block 49, which is connected to the top of the replenishment bin 42 by a pull rope 8. This facilitates the intact drop of the small twisted rolls from the top of the bin without them getting stuck inside.

[0075] Reference Figure 5 , Figure 5 This is an enlarged view of the structure of B in some embodiments of the present invention.

[0076] According to some embodiments of the present invention, optionally, one end of the pull rope 8 is connected to the fixing member 10 through the top of the feeding bin 42. This allows the pressing block 49 to be pulled towards the top of the bin when small twisted dough sticks are being placed in.

[0077] Reference Figure 7 , Figure 7 This is a schematic diagram of the structure of the detection mechanism in some embodiments of the present invention.

[0078] According to some embodiments of the present invention, optionally, the support plate 32 is slidably connected to the first bracket 31. This facilitates the adjustment of the position of the detection mechanism 3.

[0079] Reference Figure 7 , Figure 7 This is a schematic diagram of the structure of the detection mechanism in some embodiments of the present invention.

[0080] According to some embodiments of the present invention, optionally, the support rod 34 is slidably connected to the first fixing frame 37 and the second fixing frame 38. This facilitates the vertical adjustment of the machine vision image acquisition module device 36 and the infrared light source device 35 for detection.

[0081] Reference Figure 7 , Figure 7 This is a schematic diagram of the structure of the detection mechanism in some embodiments of the present invention.

[0082] According to some embodiments of the present invention, optionally, both the first fixing frame 37 and the second fixing frame 38 are provided with sliding holes 7. This facilitates the front-to-back adjustment of the machine vision image acquisition module device 36 and the infrared light source device 35 for detection.

[0083] Reference Figure 1 , Figure 1 This is a schematic diagram of the automatic inspection, rejection, and replenishment system for small twisted dough stick pillow-type packaging defects according to some embodiments of the present invention.

[0084] According to some embodiments of the present invention, optionally, the detection mechanism 3 further includes a protective housing 39, which is mounted on the support plate 32. This prevents other objects from entering and affecting the judgment of the detection mechanism 3, thereby affecting production efficiency.

[0085] Reference Figure 4 , Figure 4 This is a schematic diagram of the feeding mechanism in some embodiments of the present invention.

[0086] According to some embodiments of the present invention, optionally, an anti-jump plate 9 is provided at the second pusher 48 above the output belt 21. This prevents the small twisted rolls from jumping off the conveyor belt 21 during replenishment, thus preventing replenishment failure.

[0087] Reference Figure 4 , Figure 4 This is a schematic diagram of the feeding mechanism in some embodiments of the present invention.

[0088] According to some embodiments of the present invention, the blocking member 43 may optionally be a pin.

[0089] Reference Figure 1 and 4 , Figure 1 This is a schematic diagram of the automatic defect inspection, rejection and replenishment system for small twisted dough pillow-type packaging according to some embodiments of the present invention; Figure 4 This is a schematic diagram of the feeding mechanism in some embodiments of the present invention.

[0090] According to some embodiments of the present invention, optionally, there are no fewer than two replenishing mechanisms 4, which are distributed alternately on both sides of the conveyor belt 21. This increases the efficiency of replenishment, avoids replenishment failure due to omissions by one replenishing mechanism 4, and also ensures an increase in the replenishment quantity. This allows the second replenishing mechanism 4 to replenish the small twisted rolls when the replenishment bin 42 in the previous replenishing mechanism 4 is empty, thereby increasing production efficiency.

[0091] It should be understood that the embodiments disclosed herein are not limited to the specific processing steps or materials disclosed herein, but should be extended to equivalent substitutions of such pillow packaging machine features as understood by those skilled in the art. It should also be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting.

[0092] The term "embodiment" in this specification refers to a specific feature or characteristic described in connection with an embodiment that is included in at least one embodiment of the invention. Therefore, phrases or "embodiments" appearing in various places throughout the specification do not necessarily refer to the same embodiment.

[0093] Furthermore, the described features or characteristics can be incorporated into one or more embodiments in any other suitable manner. In the above description, specific details, such as thickness, quantity, etc., are provided to provide a comprehensive understanding of embodiments of the invention. However, those skilled in the art will understand that the invention can be implemented without the aforementioned specific details or may be implemented using other methods, components, materials, etc.

Claims

1. An automatic defect inspection, rejection, and replenishment system for small twisted dough stick pillow-shaped packaging, characterized in that, include: Material handling mechanism; A feeding mechanism is located on one side of the material handling mechanism's outlet, and a conveyor belt is provided at the top center of the feeding mechanism; The testing mechanism is located directly above the inlet of the conveyor belt and on the side of the outlet of the material handling mechanism; A feeding mechanism is provided on one or both sides of the conveyor belt, and is located on one side of the detection mechanism; The rejection mechanism is located between the detection mechanism and the feeding mechanism, and directly above the conveyor belt. One end of the rejection mechanism is provided with a rejection channel, which is located on one side of the conveyor belt. A collection box is provided below the outlet end of the rejection channel. A packaging mechanism is located at one end of the feeding mechanism and at the end of the conveyor belt outlet; The material handling mechanism includes a material handling box, which contains a material handling tray, and the top periphery of the material handling tray is provided with multiple material handling grooves. The testing mechanism is mounted on the conveyor belt via a first bracket. The testing mechanism includes a support plate, which is located on the top of the first bracket. The support plate has an opening in the middle, which is located directly above the conveyor belt. A support rod is provided on one side of the top of the support plate. An infrared light source device is mounted on the support rod via a first fixing frame. A machine vision imaging module device is mounted directly above the infrared light source device via a second fixing frame. The feeding mechanism includes a fixed bracket located on one side of the conveyor belt, a feeding bin mounted on the fixed bracket, a blocking member at the bottom of one side of the feeding bin, and the blocking member inserted into the feeding bin. A second bracket is located on the opposite side of the fixed bracket from the conveyor belt. A first cylinder is located at the top of the second bracket, and a first pusher is located at the output end of the first cylinder. The first pusher passes through the fixed bracket and the feeding bin to the other side. A second cylinder is located at the bottom of the second bracket, and a second pusher is located at the output end of the second cylinder. The second pusher is located on the other side of the fixed bracket and is parallel to the conveyor belt. The rejection mechanism includes a third support, which is equipped with a drive motor. The drive motor is equipped with a rejection plate, which is located directly above the conveyor belt and at the inlet end of the rejection channel.

2. The automatic inspection, rejection, and replenishment system for small twisted dough stick pillow-type packaging defects according to claim 1, characterized in that: The conveyor belt is equipped with multiple isolation blocks, and the distance between the isolation blocks is the same.

3. The automatic inspection, rejection, and replenishment system for small twisted dough stick pillow-type packaging defects according to claim 1, characterized in that: The replenishment bin is equipped with a pressure block, which is connected to the top of the replenishment bin by a pull rope.

4. The automatic inspection, rejection, and replenishment system for small twisted dough stick pillow-type packaging defects according to claim 3, characterized in that: One end of the pull rope is connected to the fixing component through the top of the replenishment bin.

5. The automatic inspection, rejection, and replenishment system for defects in small twisted dough stick pillow-type packaging according to claim 1, characterized in that: The support plate is slidably connected to the first bracket.

6. The automatic defect inspection, rejection, and replenishment system for small twisted dough stick pillow-type packaging according to claim 1, characterized in that: The support rod is slidably connected to the first fixed frame and the second fixed frame.

7. The automatic inspection, rejection, and replenishment system for defects in small twisted dough stick pillow-type packaging according to claim 1, characterized in that: Both the first and second fixing brackets are provided with sliding holes.

8. The automatic inspection, rejection, and replenishment system for small twisted dough stick pillow-type packaging defects according to claim 6, characterized in that: Both the first and second fixing brackets are provided with sliding holes.

9. The automatic inspection, rejection, and replenishment system for defects in small twisted dough stick pillow-type packaging according to claim 1, characterized in that: The testing facility also includes a protective housing mounted on the support plate.

10. The automatic inspection, rejection, and replenishment system for defects in small twisted dough stick pillow-type packaging according to claim 1, characterized in that: The second pusher frame is equipped with an anti-slip plate located above the conveyor belt.

11. The automatic inspection, rejection, and replenishment system for defects in small twisted dough stick pillow-type packaging according to claim 1, characterized in that: The blocking component is a pin.

12. The automatic inspection, rejection, and replenishment system for defects in small twisted dough stick pillow-shaped packaging according to claim 1, characterized in that: There shall be no fewer than two feeding mechanisms, which shall be distributed alternately on both sides of the conveyor belt.

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