Columnar product rejecting and conveying device and method

Abstract

The invention discloses a columnar product rejecting and conveying device which comprises a first conveying mechanism, a material supporting and rejecting mechanism and a second conveying mechanism which are used for horizontally or obliquely conveying columnar products and are sequentially arranged in the product conveying direction. The first conveying mechanism comprises a plurality of first bearing parts and first conveying assemblies which are used for bearing columnar products and are arranged at intervals in the product conveying direction, the material supporting and waste removing mechanism is used for supporting the columnar products and removing unqualified columnar products through reciprocating or overturning movement, and the second conveying mechanism comprises a plurality of second bearing parts and second conveying assemblies; a feeding mechanism is arranged at the feeding end of the first conveying mechanism, a discharging mechanism is arranged at the discharging end of the second conveying mechanism, and a product detection mechanism is arranged on one side of the material supporting and waste removing mechanism. The invention further discloses a columnar product rejecting and conveying method. The columnar product rejecting and conveying device and method have the advantages that qualified columnar products can be continuously conveyed, and material shortage and unqualified production on follow-up stations are avoided.

Description

Technical Field

[0001] This invention relates to the field of food and pharmaceutical packaging machinery and equipment, specifically to a waste conveying device and method for columnar products. Background Technology

[0002] Pre-filled syringes are commonly used medical devices, also known as implants. They generally consist of a syringe barrel, a syringe handle, and a cap. After the implant is completed at a certain work station (such as the labeling station), it needs to be tested. If it fails to meet the requirements, it needs to be rejected.

[0003] A Chinese patent document with application number 202121446502.9 discloses a pre-filled syringe filling machine. The syringe barrel is vertically screwed onto a synchronous belt and conveyed forward along the conveyor line. When the bottle reaches the rejection station, the rejection cylinder drives the front movable baffle to retract, and simultaneously, the air nozzle at the lower end opens to blow air. At this time, the outer side of the synchronous belt lacks the restriction of the movable baffle, and under the action of external force, the syringe can be dislodged from the side opening of the synchronous belt's slot. If there is an empty syringe on the synchronous belt, the lighter weight of the empty syringe allows it to dislodge from the slot under the airflow from the air nozzle and fall into the lower bottle slide. The syringe filled with injection solution, being heavier, cannot be blown off by the air nozzle and enters the collection hopper, thus completing the rejection action. This pre-filled syringe filling machine has the following shortcomings: 1) The empty positions on the synchronous belt after scrapping are difficult to replenish in time, which can easily lead to material shortages and production defects in subsequent workstations; 2) The syringe is vertically screwed on the synchronous belt for transport, which makes it difficult to meet the labeling requirements on the side wall of the syringe; 3) Empty syringes are rejected by blowing air, but it is difficult to reject defective syringes filled with injection solution. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a columnar product rejection conveying device and method that can continuously convey qualified columnar products, avoid material shortages and production defects at subsequent workstations, and easily meet the execution requirements of the action actuator on the side wall of the columnar product.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A columnar product rejection conveying device includes a first conveying mechanism for horizontally or inclinedly conveying columnar products and arranged sequentially along the product conveying direction, a material-supporting rejection mechanism, and a second conveying mechanism for receiving qualified columnar products from the material-supporting rejection mechanism. The first conveying mechanism includes multiple first bearing parts for carrying columnar products and arranged at intervals along the product conveying direction, and a first conveying component for conveying columnar products from the first bearing parts one by one to the material-supporting rejection mechanism. The material-supporting rejection mechanism is used to lift columnar products and remove unqualified columnar products through reciprocating or flipping motions. The second conveying mechanism includes multiple second bearing parts for carrying columnar products and arranged at intervals along the product conveying direction, and a second conveying component for conveying columnar products from the second bearing parts one by one forward. The first conveying mechanism has a feeding mechanism at its inlet end, the second conveying mechanism has a discharging mechanism at its outlet end, and the material-supporting rejection mechanism has a product detection mechanism on one side.

[0006] As a further improvement to the above technical solution: The material feeding and rejection mechanism includes a material feeding frame and a rejection conveying drive assembly. A rejection interval is formed between the first conveying mechanism and the second conveying mechanism. The material feeding frame is located at the rejection interval. The rejection conveying drive assembly is used to drive the material feeding frame to reciprocate or flip to remove unqualified columnar products through the rejection interval.

[0007] The top of the support frame is provided with a lifting groove.

[0008] The first conveying assembly includes a first front-to-back swing conveyor and a first swing drive mechanism. The top of the first front-to-back swing conveyor is provided with a plurality of first transfer parts arranged at intervals along the product conveying direction. The first swing drive mechanism is used to drive the first front-to-back swing conveyor to swing back and forth to convey the columnar products forward one by one to the first carrier parts.

[0009] The second conveying assembly includes a second front-to-back swing conveyor and a second swing drive mechanism. The top of the second front-to-back swing conveyor is provided with a plurality of second transfer parts arranged at intervals along the product conveying direction. The second swing drive mechanism is used to drive the second front-to-back swing conveyor to swing back and forth to convey the columnar product forward one by one to the second carrier parts.

[0010] The first conveying mechanism further includes a first fixed support frame, and the first support part is disposed on the first fixed support frame; The discharge end of the first fixed support frame is provided with a pusher for ejecting and removing defective columnar products from the lifting groove when the support frame moves backward, flips backward, or moves downward. The second conveying mechanism further includes a second fixed support frame, the second support part is disposed on the second fixed support frame, and the material picking and waste removal mechanism is disposed at the interval between the first fixed support frame and the second fixed support frame.

[0011] The lifting groove is located in the middle of the closest first and second bearing parts when the material support frame lifts the columnar product. The distance between the closest first and second bearing parts is equal to twice the distance between adjacent first bearing parts, and the distance between adjacent first bearing parts is equal to the distance between adjacent second bearing parts.

[0012] Below the material handling and waste removal mechanism is a waste collection mechanism.

[0013] The feeding mechanism is used to transfer the columnar products on the upstream annular conveyor to the first bearing part of the first conveyor. The first conveyor is provided with an action execution mechanism on its side, and the discharge end of the second conveyor is also provided with a discharge position detection mechanism. The discharge mechanism is used to transfer the columnar products on the second bearing part of the second conveyor to the protective sleeve installation mechanism.

[0014] A method for conveying rejectable cylindrical products, using the aforementioned rejectable cylindrical product conveying device, includes the following steps: S1. The material handling and rejection mechanism transfers qualified columnar products from the first conveying mechanism to the second conveying mechanism and rejects unqualified columnar products. S2. The second conveying mechanism stops when the unqualified columnar products are removed by the material receiving and rejecting mechanism, and resumes operation when qualified columnar products are available on the material receiving and rejecting mechanism, so as to ensure continuous conveying of columnar products on the second conveying mechanism.

[0015] Compared with the prior art, the advantages of the present invention are as follows: The columnar product rejection conveying device of the present invention, on the one hand, through the cooperation of the first conveying mechanism, the material-supporting rejection mechanism, and the second conveying mechanism, can reject unqualified columnar products between the first and second conveying mechanisms (i.e., reject them before they enter the second conveying mechanism, ensuring that only qualified columnar products are on the second conveying mechanism), and can transfer qualified columnar products from the first conveying mechanism to the second conveying mechanism. Simultaneously, with the cooperation of the second conveying mechanism stopping and waiting when the material-supporting rejection mechanism rejects the products, the columnar products on the second conveying mechanism are continuously conveyed, thus avoiding the situation where, in three adjacent second bearing sections, there are products on the front and rear second bearing sections. The columnar product has no columnar product on the second supporting part in the middle, thus avoiding material shortages and production defects in subsequent stations [there is a gripping link between scrapping and subsequent stations. This gripping link grabs a group of columnar products (usually multiple columnar products arranged close together or evenly spaced) and places them on the next station. If the columnar product conveying is not continuous, it is easy for the group of columnar products grabbed by the gripping link to be missing columnar products, thus causing material shortages and production defects in subsequent stations]; on the other hand, the columnar products are placed horizontally or inclined on both the first and second conveying mechanisms, which easily meets the execution requirements of the action actuator on the side wall of the columnar product.

[0016] The columnar product rejection and conveying method of the present invention, through the cooperation of the first conveying mechanism, the material-supporting rejection mechanism, and the second conveying mechanism, can reject unqualified columnar products between the first and second conveying mechanisms (i.e., reject unqualified columnar products before they enter the second conveying mechanism, ensuring that only qualified columnar products are on the second conveying mechanism), and can transfer qualified columnar products from the first conveying mechanism to the second conveying mechanism. Simultaneously, with the second conveying mechanism stopping and waiting when the material-supporting rejection mechanism rejects the products, the columnar products on the second conveying mechanism are continuously conveyed. This avoids the situation where, in three adjacent second bearing sections, there are columnar products on the front and rear sections, but no columnar products on the middle section, thereby preventing material shortages and production defects at subsequent workstations. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural schematic diagram of the columnar product waste conveying device of the present invention.

[0018] Figure 2 yes Figure 1 A magnified structural diagram of point A in the middle.

[0019] Figure 3 yes Figure 2 A magnified structural diagram at point B in the middle.

[0020] Figure 4 This is a schematic diagram of the material handling and waste removal mechanism of the columnar product waste removal conveying device of the present invention.

[0021] Figure 5 This is a schematic diagram of the structure of the second conveying mechanism of the columnar product waste conveying device of the present invention.

[0022] Figure 6 This is a top view of the columnar product rejection and conveying system of the present invention.

[0023] Figure 7 yes Figure 6 A magnified structural diagram at point C.

[0024] The labels in the diagram represent: 1. First conveying mechanism; 11. First fixed support frame; 111. Pushing part; 12. First front-to-back swing conveyor frame; 13. First support part; 14. First transfer part; 15. First swing drive mechanism; 2. Material support and waste rejection mechanism; 21. Material rack; 22. Waste rejection conveying drive assembly; 23. Lifting trough; 3. Second conveying mechanism; 31. Second fixed support frame; 32. Second front-to-back swing conveyor frame; 33. Second support part; 34. Second transfer part; 35. Second swing drive mechanism; 36. Unloading mechanism; 37. Unloading position detection mechanism; 38. Protective sleeve installation mechanism; 381. Protective sleeve; 4. Columnar product; 5. Waste rejection interval; 6. Waste collection mechanism; 7. Loading mechanism; 71. Circular conveying mechanism; 8. Action execution mechanism; 9. Product detection mechanism. Detailed Implementation

[0025] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] In the description of this invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., 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.

[0027] 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 this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0028] In this invention, unless otherwise explicitly specified and limited, the terms "assembly," "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 or an electrical 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 invention according to the specific circumstances.

[0029] Example 1: Figures 1 to 5 An embodiment of the columnar product rejection conveying device of the present invention is shown. The columnar product rejection conveying device of this embodiment includes a first conveying mechanism 1 for horizontally or inclinedly conveying columnar products 4 and arranged sequentially along the product conveying direction, a material-supporting rejection mechanism 2, and a second conveying mechanism 3 for receiving qualified columnar products 4 on the material-supporting rejection mechanism 2. The first conveying mechanism 1 includes a plurality of first bearing parts 13 for carrying columnar products 4 and arranged at intervals along the product conveying direction, and a first conveying component for conveying columnar products 4 one by one on the first bearing parts 13 to the material-supporting rejection mechanism 2. The material-supporting rejection mechanism 2 is used to lift columnar products 4 and remove unqualified columnar products 4 by reciprocating or flipping motion. The second conveying mechanism 3 includes a plurality of second bearing parts 33 for carrying columnar products 4 and arranged at intervals along the product conveying direction, and a second conveying component for conveying columnar products 4 one by one forward on the second bearing parts 33. The feeding end of the first conveying mechanism 1 is provided with a feeding mechanism 7, the discharging end of the second conveying mechanism 3 is provided with a discharging mechanism 36, and a product detection mechanism 9 is provided on one side of the material-supporting rejection mechanism 2.

[0030] The production process of this columnar product rejection conveying device is as follows: The feeding mechanism 7 places the columnar products 4 one by one horizontally or at an incline on the first bearing part 13 at the feeding end of the first conveying mechanism 1; the first conveying assembly conveys the columnar products 4 on the first bearing part 13 one by one to the material-supporting rejection mechanism 2, thereby conveying the columnar products 4 on each first bearing part 13 (one first bearing part 13 is placed on each first bearing part 13) one by one to the material-supporting rejection mechanism 2; the material-supporting rejection mechanism 2 discharges the columnar products 4 that have passed the inspection of the product inspection mechanism 9 from the first discharge end of the first conveying mechanism 1. The columnar products 4 that fail the inspection by the product inspection mechanism 9 are transferred from the carrier 13 to the second carrier 33 at the inlet end of the second conveying mechanism 3. The second conveying assembly conveys the columnar products 4 on each of the second carrier 33 forward (or downward to the feeding mechanism 36) one by one, thereby conveying the columnar products 4 on each of the second carrier 33 (each second carrier 33 has a first carrier 13 placed on it) to the feeding mechanism 36 one by one. The feeding mechanism 36 discharges the columnar products 4 on the second carrier 33 at the outlet end of the second conveying mechanism 3 and transfers them to the downstream mechanism. When the material receiving and rejection mechanism 2 rejects the unqualified columnar products 4, the second conveying mechanism 3 stops and waits for qualified columnar products 4 on the material receiving and rejection mechanism 2 before resuming operation, so that the columnar products 4 on the second conveying mechanism 3 are continuously conveyed.

[0031] This columnar product rejection and conveying device, on the one hand, through the cooperation of the first conveying mechanism 1, the material-supporting rejection mechanism 2, and the second conveying mechanism 3, can reject unqualified columnar products 4 between the first conveying mechanism 1 and the second conveying mechanism 3 (i.e., rejecting unqualified columnar products 4 before they enter the second conveying mechanism 3, ensuring that only qualified columnar products 4 are on the second conveying mechanism 3), and can transfer qualified columnar products 4 from the first conveying mechanism 1 to the second conveying mechanism 3. Simultaneously, with the second conveying mechanism 3 stopping and waiting when the material-supporting rejection mechanism 2 rejects the products, the columnar products 4 on the second conveying mechanism 3 are continuously conveyed, thus avoiding the presence of products in three adjacent second bearing sections 33. The columnar product 4 is on the first conveying mechanism 1 and the second bearing part 33 in the middle is not on the second bearing part 33, thus avoiding material shortage and production defects in subsequent workstations [there is a gripping link between scrapping and subsequent workstations. This gripping link grabs a group of columnar products (generally multiple columnar products are arranged close together or evenly spaced) and places them on the next workstation. If the columnar product conveying is not continuous, it is easy for the group of columnar products grabbed by the gripping link to be missing columnar products, thus causing material shortage and production defects in subsequent workstations]; on the other hand, the columnar product 4 is placed horizontally or inclined on both the first conveying mechanism 1 and the second conveying mechanism 3, which can easily meet the execution requirements of the action execution mechanism 8 on the side wall of the columnar product 4.

[0032] Furthermore, such as Figure 4As shown, in this embodiment, the material feeding and rejection mechanism 2 includes a material feeding frame 21 and a rejection conveying drive assembly 22. A rejection interval 5 is formed between the first conveying mechanism 1 and the second conveying mechanism 3. The material feeding frame 21 is located at the rejection interval 5. The rejection conveying drive assembly 22 is used to drive the material feeding frame 21 to reciprocate or flip to remove the unqualified columnar products 4 through the rejection interval 5.

[0033] The material rack 21 can be equivalent to the first bearing part 13 at the end of the first conveying mechanism 1 and the second bearing part 33 at the beginning of the second conveying mechanism 3. The first conveying component conveys the columnar products 4 on the first bearing part 13 to the material rack and waste removal mechanism 2 one by one, and finally conveys the columnar products 4 on the first conveying mechanism 1 to the material rack 21 one by one. When the material rack 21 contains a defective columnar product 4 that has been inspected by the product inspection mechanism 9, the rejection conveying drive assembly 22 drives the material rack 21 to reciprocate or flip to remove the defective columnar product 4 through the rejection interval 5; when the material rack 21 contains a qualified columnar product 4 that has been inspected by the product inspection mechanism 9, the second conveying assembly transfers the qualified columnar product 4 on the material rack 21 to the second bearing part at the feeding end of the second conveying mechanism 3, and then conveys the columnar products 4 on each second bearing part 33 forward (or downward to the feeding mechanism 36) one by one, thereby conveying the columnar products 4 on each second bearing part 33 (each second bearing part 33 has a first bearing part 13 placed on it) to the feeding mechanism 36 one by one.

[0034] Furthermore, such as Figure 3 and Figure 4 As shown, in this embodiment, the top of the support frame 21 is provided with a lifting groove 23 to facilitate stable lifting of the columnar product 4. Preferably, the conveying direction of the columnar product 4 on the first conveying mechanism 1 and the second conveying mechanism 3 is perpendicular to the placement direction (such as the horizontal direction of the columnar product 4).

[0035] Furthermore, such as Figure 2 and Figure 3As shown, in this embodiment, the first conveying assembly includes a first front-to-back swing conveyor frame 12 and a first swing drive mechanism 15. The top of the first front-to-back swing conveyor frame 12 is provided with a plurality of first transfer sections 14 arranged at intervals along the product conveying direction. The first swing drive mechanism 15 is used to drive the first front-to-back swing conveyor frame 12 to swing back and forth to convey the columnar products 4 one by one to the first support sections 13 forward. The first swing drive mechanism 15 drives the first front-to-back swing conveyor frame 12 to swing back and forth to convey the columnar products 4 one by one to the first support sections 13 forward, thereby conveying the columnar products 4 on each first support section 13 (one first support section 13 is placed on each first support section 13) to the material handling and waste rejection mechanism 2 one by one. Specifically, each first bearing part 13 is fixedly arranged and evenly spaced along the conveying direction of the first conveying mechanism 1. Each first transfer part 14 on the first front-back swing conveyor frame 12 is evenly spaced along the conveying direction of the first conveying mechanism 1, and the spacing between the first transfer parts 14 is the same as the spacing between the first transfer parts 14. During the swinging process, the first front-back swing conveyor frame 12 maintains that each first transfer part 14 is evenly spaced along the conveying direction of the first conveying mechanism 1 and the spacing remains unchanged. The first front-back swing conveyor frame 12 swings back and forth once, and has a lifting action to simultaneously push out the columnar products 4 on each first bearing part 13, a forward conveying action to simultaneously convey each lifted columnar product 4 forward, and a lowering and unloading action to place each columnar product 4 one by one onto the first bearing part 13 below, thereby realizing the forward conveying of each columnar product 4 on each first bearing part 13 to the first bearing part 13.

[0036] Furthermore, in this embodiment, the second conveying assembly includes a second front-to-back swing conveyor frame 32 and a second swing drive mechanism 35. The top of the second front-to-back swing conveyor frame 32 is provided with a plurality of second transfer sections 34 arranged at intervals along the product conveying direction. The second swing drive mechanism 35 is used to drive the second front-to-back swing conveyor frame 32 to swing back and forth to convey the columnar products 4 one by one to the second support sections 33 forward. The second swing drive mechanism 35 drives the second front-to-back swing conveyor frame 32 to swing back and forth to convey the columnar products 4 one by one to the second support sections 33 forward, thereby conveying the columnar products 4 on each second support section 33 (one first support section 13 is placed on each first support section 13) one by one to the feeding mechanism 36. Specifically, each of the second bearing portions 33 is fixedly arranged and evenly spaced along the conveying direction of the second conveying mechanism 3. Each of the second transfer portions 34 on the second front-to-back swing conveyor frame 32 is evenly spaced along the conveying direction of the second conveying mechanism 3, and the spacing between the second transfer portions 34 is the same as the spacing between the second transfer portions 34. During the swinging process, the second front-to-back swing conveyor frame 32 maintains that each of the second transfer portions 34 is evenly spaced along the conveying direction of the second conveying mechanism 3 and the spacing remains unchanged. Each time the second front-to-back swing conveyor frame 32 swings forward and backward, it has a lifting action to simultaneously push out the columnar products 4 on each of the second bearing portions 33, a forward conveying action to simultaneously convey each lifted columnar product 4 forward, and a lowering and unloading action to place each columnar product 4 one by one onto the second bearing portion 33 below, thereby realizing the forward conveying of each columnar product 4 on each of the second bearing portions 33 to the second bearing portion 33.

[0037] Furthermore, in this embodiment, the first conveying mechanism 1 also includes a first fixed support frame 11; The discharge end of the first fixed support frame 11 is provided with a pusher 111 for ejecting and removing the defective columnar products 4 on the lifting groove 23 when the material support frame 21 moves backward, flips backward, or moves downward. The first bearing part 13 is disposed on the first fixed bearing frame 11, the second conveying mechanism 3 also includes a second fixed bearing frame 31, the second bearing part 33 is disposed on the second fixed bearing frame 31, and the material picking and waste removal mechanism 2 is disposed at the interval between the first fixed bearing frame 11 and the second fixed bearing frame 31.

[0038] Driven by the waste conveying drive assembly 22, the material support frame 21 can move up and down, back and forth, or flip over. When the material support frame 21 moves backward, flips backward, or moves downward, the push part 111 blocks the unqualified columnar products 4 on the lifting groove 23, pushing the unqualified columnar products 4 out of the lifting groove 23 for rejection.

[0039] Specifically, when rejecting defective products, the first front-to-back swing conveyor 12 delivers the defective cylindrical product 4 to the lifting groove 23 of the material support frame 21. The lifting groove 23 then retracts synchronously with the first front-to-back swing conveyor 12 (e.g., moves backward and downward), preventing the defective cylindrical product 4 from remaining on the first fixed support frame 11. Under the pushing action of the pushing part 111, it falls into the rejection interval 5 between the first conveying mechanism 1 and the second conveying mechanism 3 (a guide channel can be provided below the rejection interval 5, through which the defective cylindrical product 4 enters the waste collection mechanism). The synchronous retraction of the lifting groove 23 with the first front-to-back swing conveyor 12 ensures that the rejection process of the material support rejection mechanism 2 is synchronized with the conveying process of the first conveying mechanism 1, without affecting the conveying of the first conveying mechanism 1 and guaranteeing the continuous conveying cycle of the first conveying mechanism 1. Preferably, the pushing part 111 is an inclined surface that is lower in the front and higher in the rear in the conveying direction of the first conveying mechanism 1, which is beneficial to push out and remove the unqualified columnar products 4 on the lifting groove 23 when the material support frame 21 moves backward, flips backward, or moves downward. In this embodiment, the waste removal conveying drive assembly 22 is an inclined telescopic drive assembly, and the telescopic end of the telescopic drive assembly faces the front and upper part in the conveying direction of the first conveying mechanism 1. The material support frame 21 is fixed to the telescopic end of the telescopic drive assembly.

[0040] Furthermore, in this embodiment, the lifting groove 23 is located in the middle of the closest first support portion 13 and the second support portion 33 when the material support frame 21 lifts the columnar product 4. The distance between the closest first support portion 13 and the second support portion 33 is equal to twice the distance between adjacent first support portions 13, and the distance between adjacent first support portions 13 is equal to the distance between adjacent second support portions 33.

[0041] In this way, the first front-to-back swing conveyor frame 12 and the second front-to-back swing conveyor frame 32 can cooperate with the material support frame 21 to place the columnar product 4 from the first conveying mechanism 1 onto the lifting groove 23 of the material support frame 21 and remove it from the lifting groove 23. Thus, the lifting groove 23 can be regarded as part of the first bearing part 13 and the second bearing part 33, ensuring that the entire stepping conveyor device maintains continuous and consistent operation.

[0042] Furthermore, in this embodiment, a waste collection mechanism 6 is provided below the material receiving and rejection mechanism 2. The waste collection mechanism 6 is used to collect the unqualified columnar products 4 rejected by the material receiving and rejection mechanism 2.

[0043] Furthermore, in this embodiment, the feeding mechanism 7 is used to transfer the columnar product 4 on the upstream annular conveying mechanism 71 to the first bearing part 13 of the first conveying mechanism 1. The first conveying mechanism 1 is provided with an action execution mechanism 8 on its side. The discharge end of the second conveying mechanism 3 is also provided with a discharge position detection mechanism 37. The discharge mechanism 36 is used to transfer the columnar product 4 on the second bearing part 33 of the second conveying mechanism 3 to the protective sleeve installation mechanism 38.

[0044] Preferably, both the first support portion 13 and the second support portion 33 are groove-shaped.

[0045] Example 2: A method for conveying rejectable cylindrical products, using the rejectable cylindrical product conveying device of Embodiment 1, includes the following steps: S1. The material handling and rejection mechanism 2 transfers qualified columnar products 4 from the first conveying mechanism 1 to the second conveying mechanism 3 and rejects unqualified columnar products 4. Specifically, the material handling and rejection mechanism 2 transfers qualified columnar products 4 from the first bearing part 13 at the discharge end of the first conveying mechanism 1 to the second bearing part 33 at the feed end of the second conveying mechanism 3, and rejects unqualified columnar products 4.

[0046] S2. The second conveying mechanism 3 stops when the unqualified columnar product 4 is removed by the material receiving and rejecting mechanism 2, and continues to operate when the unqualified columnar product 4 is on the material receiving and rejecting mechanism 2, so that the columnar product 4 on the second conveying mechanism 3 is continuously conveyed.

[0047] This method for conveying and rejecting defective columnar products involves the cooperation of a first conveying mechanism 1, a material-supporting and rejecting mechanism 2, and a second conveying mechanism 3. This allows for the rejection of defective columnar products 4 between the first and second conveying mechanisms (i.e., rejection before they enter the second conveying mechanism 3, ensuring that only qualified columnar products 4 are on the second conveying mechanism 3). It also allows for the transfer of qualified columnar products 4 from the first conveying mechanism 1 to the second conveying mechanism 3. Furthermore, the second conveying mechanism 3 stops and waits while the material-supporting and rejecting mechanism 2 rejects defective products, ensuring continuous conveying of columnar products 4 on the second conveying mechanism 3. This avoids situations where, in three adjacent second bearing sections 33, there are columnar products 4 on the front and rear sections, but no columnar products 4 on the middle section, thus preventing material shortages and production defects at subsequent workstations.

[0048] Furthermore, in this embodiment, before S1, the feeding mechanism 7 places the columnar products 4 one by one horizontally or at an angle on the first bearing part 13 at the feeding end of the first conveying mechanism 1; the first conveying assembly conveys the columnar products 4 on the first bearing part 13 one by one to the material receiving and waste removal mechanism 2, thereby conveying the columnar products 4 on each first bearing part 13 (one first bearing part 13 is placed on each first bearing part 13) one by one to the material receiving and waste removal mechanism 2.

[0049] Furthermore, in this embodiment, after S3, the second conveying component conveys the columnar products 4 on each of the second carrier parts 33 forward (or downward to the feeding mechanism 36) one by one, thereby conveying the columnar products 4 on each of the second carrier parts 33 (each second carrier part 33 has a first carrier part 13 placed on it) one by one to the feeding mechanism 36; the feeding mechanism 36 feeds the columnar products 4 on the second carrier parts 33 at the discharge end of the second conveying mechanism 3 to the downstream mechanism.

[0050] Example 3: Figure 6 and Figure 7 A columnar product rejection assembly system is shown, including the columnar product rejection conveying device of Embodiment 1. An annular conveying mechanism 71 is located upstream of the feeding mechanism 7, and a protective sleeve mounting mechanism 38 is located downstream of the unloading mechanism 36. The protective sleeve mounting mechanism 38 includes an annular conveying assembly, and a protective sleeve feeding station, a pre-assembly station, an assembly station, and a finished product unloading station arranged sequentially around the annular conveying assembly. The pre-assembly station is used to pre-assemble the columnar product 4 into the protective sleeve 381, the assembly station is used to complete the assembly of the columnar product 4 and the protective sleeve 381, and the finished product unloading station is used to output the assembled columnar product 4 and the protective sleeve 381.

[0051] Because of the use of a columnar product waste conveying device, the assembly system can be assembled as a whole when the protective sleeve 381 is added, which improves the assembly efficiency and effectively avoids the protective sleeve 381 being unused due to material shortage. This reduces the frequency of downtime to clean the protective sleeves on the conveyor of the protective sleeve 381, and improves the overall stability and efficiency of the equipment.

[0052] In this embodiment, the cylindrical product 4 is a pre-filled syringe.

[0053] Example 4: A columnar product rejection conveying device is disclosed. The structure of the columnar product rejection conveying device in this embodiment is basically the same as that in Embodiment 1, except that the spacing between the first bearing parts 13 and the spacing between the second bearing parts 33 are different. When the lifting groove 23 lifts the columnar product 4, the distance to the nearest first bearing part 13 is equal to the distance between two adjacent first bearing parts 13, and the distance to the nearest second bearing part 33 is equal to the distance between two adjacent second bearing parts 33. This enables variable spacing conveying of the columnar product 4.

[0054] While the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the invention. Any person skilled in the art can make many possible variations and modifications to the technical solutions of the present invention, or modify them into equivalent embodiments, without departing from the scope of the present invention. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention, without departing from the scope of the present invention, should fall within the protection scope of the present invention.

Claims

1. A waste conveying device for columnar products, characterized in that: The system includes a first conveying mechanism (1) for horizontally or inclinedly conveying columnar products (4) and arranged sequentially along the product conveying direction, a material-receiving and waste-removing mechanism (2), and a second conveying mechanism (3) for receiving qualified columnar products (4) from the material-receiving and waste-removing mechanism (2). The first conveying mechanism (1) includes a plurality of first bearing parts (13) for carrying columnar products (4) and arranged at intervals along the product conveying direction, and a first conveying component for conveying columnar products (4) from the first bearing parts (13) one by one to the material-receiving and waste-removing mechanism (2). The material-receiving and waste-removing mechanism (2) is used to receive qualified columnar products (4) from the material-receiving and waste-removing mechanism (2). The columnar products (4) are lifted and reciprocated or flipped to remove the unqualified columnar products (4). The second conveying mechanism (3) includes a plurality of second bearing parts (33) for carrying columnar products (4) and arranged at intervals along the product conveying direction, and a second conveying component for conveying the columnar products (4) on the second bearing parts (33) forward one by one. The feeding end of the first conveying mechanism (1) is provided with a feeding mechanism (7), the discharging end of the second conveying mechanism (3) is provided with a discharging mechanism (36), and a product detection mechanism (9) is provided on one side of the material picking and rejecting mechanism (2).

2. The columnar product rejection conveying device according to claim 1, characterized in that: The material feeding and rejection mechanism (2) includes a material feeding frame (21) and a rejection conveying drive assembly (22). A rejection interval (5) is formed between the first conveying mechanism (1) and the second conveying mechanism (3). The material feeding frame (21) is located at the rejection interval (5). The rejection conveying drive assembly (22) is used to drive the material feeding frame (21) to reciprocate or flip to remove the unqualified columnar products (4) through the rejection interval (5).

3. The columnar product rejection conveying device according to claim 2, characterized in that: The top of the support frame (21) is provided with a support groove (23).

4. The columnar product rejection conveying device according to claim 3, characterized in that: The first conveying assembly includes a first front-to-back swing conveyor (12) and a first swing drive mechanism (15). The top of the first front-to-back swing conveyor (12) is provided with a plurality of first transfer parts (14) arranged at intervals along the product conveying direction. The first swing drive mechanism (15) is used to drive the first front-to-back swing conveyor (12) to swing back and forth to convey the columnar product (4) forward one by one to the first bearing part (13).

5. The columnar product rejection conveying device according to claim 4, characterized in that: The second conveying assembly includes a second front-to-back swing conveyor (32) and a second swing drive mechanism (35). The top of the second front-to-back swing conveyor (32) is provided with a plurality of second transfer parts (34) arranged at intervals along the product conveying direction. The second swing drive mechanism (35) is used to drive the second front-to-back swing conveyor (32) to swing back and forth to convey the columnar product (4) forward one by one to the second carrier part (33).

6. The columnar product rejection conveying device according to claim 4, characterized in that: The first conveying mechanism (1) further includes a first fixed support frame (11), and the first support part (13) is disposed on the first fixed support frame (11); The first fixed support frame (11) has a pusher (111) at the discharge end for ejecting and removing the unqualified columnar products (4) on the lifting groove (23) when the material support frame (21) moves backward, flips backward, or moves downward. The second conveying mechanism (3) further includes a second fixed support frame (31), the second support part (33) is disposed on the second fixed support frame (31), and the material picking and waste removal mechanism (2) is disposed at the interval between the first fixed support frame (11) and the second fixed support frame (31).

7. The columnar product rejection conveying device according to claim 3, characterized in that: The lifting groove (23) is located in the middle of the closest first support part (13) and the second support part (33) when the support frame (21) lifts the columnar product (4). The distance between the closest first support part (13) and the second support part (33) is equal to twice the distance between adjacent first support parts (13), and the distance between adjacent first support parts (13) is equal to the distance between adjacent second support parts (33).

8. The columnar product rejection conveying device according to any one of claims 1 to 7, characterized in that: Below the material handling and waste removal mechanism (2) is a waste collection mechanism (6).

9. The columnar product rejection conveying device according to any one of claims 1 to 7, characterized in that: The feeding mechanism (7) is used to transfer the columnar product (4) on the upstream annular conveying mechanism (71) to the first bearing part (13) of the first conveying mechanism (1). The first conveying mechanism (1) is provided with an action execution mechanism (8) on its side. The discharge end of the second conveying mechanism (3) is also provided with a discharge position detection mechanism (37). The discharge mechanism (36) is used to transfer the columnar product (4) on the second bearing part (33) of the second conveying mechanism (3) to the protective sleeve installation mechanism (38).

10. A method for conveying and rejecting cylindrical products, characterized in that, The process, using the columnar product rejection conveying device according to any one of claims 1 to 9, includes the following steps: S1, the material handling and rejection mechanism (2) transfers qualified columnar products (4) from the first conveying mechanism (1) to the second conveying mechanism (3) and rejects unqualified columnar products (4); S2. The second conveying mechanism (3) stops when the unqualified columnar product (4) is removed by the material receiving and waste removal mechanism (2), and continues to operate when the qualified columnar product (4) is on the material receiving and waste removal mechanism (2), so that the columnar product (4) on the second conveying mechanism (3) is continuously conveyed.

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