Injection liquid soft bag production empty bag rejection device

Abstract

The application belongs to the technical field of bag production, in particular to an empty bag removing device for injection solution soft bag production, which comprises a working platform, a conveying belt one is installed above the working platform, injection solution bags arranged at equal distances are placed above the conveying belt one, the injection solution bags are packaged by light-proof aluminum plastic film; the conveying belt one is transmitted by a plurality of transmission wheels, and the transmission wheels are controlled by an external controller, a supporting frame is installed on the side of the working platform, and a placing platform is fixedly installed above the supporting frame; compressed air blown out by the blowing pipe can blow the hollow light-proof aluminum plastic film away from above the conveying belt one, and the light-proof aluminum plastic film containing the injection solution bag will remain above the conveying belt one and continue to be conveyed downward; such design can quickly and simply solve the problem of empty film without product, facilitate the use of the subsequent injection solution bag, and has strong applicability.

Description

Technical Field

[0001] This invention belongs to the field of bag production technology, specifically an empty bag rejection device for the production of injection liquid soft bags. Background Technology

[0002] Injection soft bags are containers used to package large-volume injection solutions. During infusion, the soft bag can be hung or used with the patient's own weight. It can completely shrink on its own, eliminating the need for air needles during infusion, thus providing a truly closed infusion environment and preventing contamination of the medication by the infusion environment.

[0003] During production, soft bags for injection solutions require packaging, which involves wrapping the product with a layer of transparent plastic film. The main purpose of this packaging is to prevent the bag from being damaged by external forces, to prevent contamination from the external environment, and to prevent the product from losing water.

[0004] However, some injectable solutions require light-proof storage to ensure product quality. Therefore, light-proof aluminum-plastic film is used for packaging. In the case of two types of packaging bags, one is transparent, so the presence or absence of the product can be seen, while the other is opaque and light-proof, so the product inside cannot be seen. When the opaque and light-proof packaging bags are produced and centrally transported into the packaging box, some packaging bags may have the problem of being empty, that is, they are transported without the soft bag of injectable solution inside.

[0005] Therefore, the present invention provides an empty bag rejection device for the production of injection soft bags. Summary of the Invention

[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0007] The technical solution adopted by the present invention to solve its technical problem is: the present invention provides an empty bag rejection device for the production of injection soft bags, including a working platform, a conveyor belt installed above the working platform, and injection bags arranged at equal intervals placed above the conveyor belt, the injection bags being packaged with light-proof aluminum-plastic film.

[0008] The conveyor belt is powered by multiple transmission wheels, which are controlled by an external controller. A support frame is installed on the side of the work platform, and a placement platform is fixedly installed on top of the support frame. Two air blowers are installed on top of the placement platform, with the outlet ends of the air blowers facing upwards from the conveyor belt and aligned with the end of the conveyor. The ends of the two air blowers away from the conveyor belt are connected to an air supply pipe. The air blown out by the air blowers can blow the hollow light-proof aluminum-plastic film away from the top of the conveyor belt.

[0009] To prevent damage to the bag body from external forces, contamination from the external environment, and to prevent product dehydration, the surface of the injection bag needs to be wrapped with a light-proof aluminum-plastic film. However, because the film is light-proof and the internal injection bag is not visible, it is currently difficult to identify injection bags that are hollow when transported on the upper surface of the conveyor belt. Therefore, the empty bag rejection device of this invention is proposed. In specific operation, a blower pipe is first set on the side of the end of the conveyor belt. When the injection bags arranged at equal intervals are transported normally on the conveyor belt, the compressed air blown by the blower pipe can blow the hollow light-proof aluminum-plastic film away from the top of the conveyor belt, while the light-proof aluminum-plastic film containing the injection bag remains on the top of the conveyor belt and continues to be transported downwards. This design can quickly and easily solve the problem of empty film without product, facilitate the subsequent use of injection bags, and has strong applicability.

[0010] Preferably, the side of the air supply pipe away from the blower pipe is connected to an external blower, and rollers are installed below the support frame, which can move the support frame to a suitable position on the conveyor belt.

[0011] Preferably, an inclined recovery plate is installed inside the working platform and on one side of the conveyor belt. The inclined recovery plate is designed to be aligned with the air blower. Baffles are installed on both sides of the inclined recovery plate. The lower part of the inclined recovery plate is connected to an external recovery cylinder. During operation, since the inclined recovery plate is aligned with the air blower, if there are defective products above the conveyor belt, the air blower can quickly blow the defective products into the inclined recovery plate and make them fall into the external recovery cylinder as soon as possible. The baffles have a certain limiting function to prevent defective products from falling to the outside of the working platform, which is conducive to the subsequent centralized recovery of defective products.

[0012] Preferably, a rotating shaft is rotatably installed inside the working platform and below the end of the first conveyor belt. The rotating shaft is connected to the output end of an external drive motor. A transfer disc is fixedly installed on the outer circumferential surface of the rotating shaft. A second conveyor belt is installed inside the working platform and is located below the end of the first conveyor belt. A transfer unit is installed on the outer circumferential surface of the transfer disc. The transfer unit is used to transfer qualified injection bags to the top of the second conveyor belt.

[0013] Preferably, the transfer unit includes a temporary storage rack installed on the outer periphery of the transfer tray. The temporary storage rack has an internal cavity, the shape of which is adapted to the shape of the injection bag. A contact plate is slidably arranged inside the temporary storage rack. A contact point one is installed on the lower end face of the contact plate, and a contact point two is installed on the bottom wall of the temporary storage rack. The contact point one and the contact point two are arranged on the same vertical plane.

[0014] Preferably, multiple sets of temporary storage racks are arranged in a circular array on the outer periphery of the transfer tray, and rubber pads are attached to the inner wall of the temporary storage racks.

[0015] Preferably, the inner wall of the temporary storage rack is provided with a groove adapted to the contact plate, and a support spring is installed on the lower end face of the contact plate. The side of the support spring away from the contact plate is connected to the inner wall of the temporary storage rack. During operation, the groove on the inner wall of the temporary storage rack facilitates the movement of the contact plate to drive the first contact point, ensuring perfect contact between the first and second contact points. The support spring is designed to facilitate the separation of the first and second contact points when there are no products inside the temporary storage rack, thereby facilitating the subsequent repackaging process of qualified products.

[0016] Preferably, a conveyor belt is provided above the work platform and on one side of the transfer tray. The conveyor belt is controlled by an external driver. Multiple transport frames are provided on the upper surface of the conveyor belt. The transport frames have cavities inside that are adapted to the injection bags. One set of transport frames is in contact with a temporary storage frame. A trigger unit is provided inside the transport frame. The trigger unit is used to control the transport frame to move closer to the second conveyor belt.

[0017] Preferably, the triggering unit includes a slide plate inside the transport frame, a contact point three is installed at the bottom of the slide plate, a contact point four is installed on the inner wall of the transport frame, an L-shaped bracket is provided inside the working platform and located on one side of the transport frame, an electric push rod is installed on the side wall of the L-shaped bracket, and the telescopic end of the electric push rod is connected to the side wall of one of the transport frames; the second conveyor belt and the transmission belt are arranged in the same plane.

[0018] Preferably, a spring is installed at the bottom of the transport frame, and the upper end of the spring is connected to the bottom of the skateboard. This design allows the skateboard to easily recover when no force is applied.

[0019] The beneficial effects of this invention are as follows:

[0020] 1. The empty bag rejection device for the production of injection soft bags according to the present invention can blow the hollow light-proof aluminum-plastic film away from the top of the conveyor belt by compressed air blown out by the air blower, while the light-proof aluminum-plastic film containing the injection bag will remain on the top of the conveyor belt and continue to be conveyed downward. This design can quickly and easily solve the problem of empty film without product, facilitate the subsequent use of injection bags, and has strong applicability.

[0021] 2. The empty bag rejection device for producing injection soft bags according to the present invention, when a qualified product falls from the end of conveyor belt one, it will fall into the cavity provided in the temporary storage rack. The contact plate in the cavity will move downward under the pressure of the qualified product, and drive contact point one and contact point two to contact. At this time, the external controller circuit connected to the rotating shaft is turned on, while the external controller circuit connected to conveyor belt one is turned off. Therefore, conveyor belt one will stop rotating first, and the rotating shaft will drive the transfer plate to rotate towards the side closer to conveyor belt two. Then, the qualified product in the cavity of the temporary storage rack will slide down to the top of conveyor belt two. In this way, the qualified products can be reordered, which is convenient for subsequent product packaging. Attached Figure Description

[0022] The invention will now be further described with reference to the accompanying drawings.

[0023] Figure 1 This is a perspective view of the present invention;

[0024] Figure 2 This is a schematic diagram of the support frame structure in this invention;

[0025] Figure 3 This is a schematic diagram of the inclined recycling plate structure in this invention;

[0026] Figure 4 This is a schematic diagram of the temporary storage rack structure in this invention;

[0027] Figure 5 This is a schematic cross-sectional view of the temporary storage rack in this invention;

[0028] Figure 6 This is a schematic diagram of the transfer tray structure in this invention;

[0029] Figure 7 This is a schematic diagram of the transmission belt structure in this invention;

[0030] Figure 8 This is a schematic diagram of the transport frame structure in this invention;

[0031] Figure 9 This is a schematic diagram of the cross-sectional structure of the transport frame in this invention.

[0032] In the diagram: 1. Working platform; 2. Conveyor belt one; 201. Injection bag; 3. Support frame; 4. Placement platform; 5. Air blowing pipe; 501. Air supply pipe; 6. Inclined recovery plate; 7. Baffle; 8. Rotating shaft; 9. Transfer tray; 10. Conveyor belt two; 11. Temporary storage rack; 111. Contact point two; 12. Contact plate; 121. Contact point one; 13. Support spring; 14. Transmission belt; 15. Transport frame; 16. Slide plate; 161. Contact point three; 17. Contact point four; 18. L-shaped bracket; 19. Electric push rod. Detailed Implementation

[0033] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0034] like Figures 1 to 4 As shown in the embodiment of the present invention, an empty bag rejection device for the production of injection soft bags includes a working platform 1, a conveyor belt 2 installed above the working platform 1, and injection bags 201 arranged at equal intervals placed above the conveyor belt 2. The injection bags 201 are packaged with light-proof aluminum-plastic film.

[0035] The conveyor belt 2 is transported by multiple transmission wheels, which are controlled by an external controller. A support frame 3 is installed on the side of the working platform 1, and a placement platform 4 is fixedly installed on the top of the support frame 3. Two air blowing pipes 5 are installed on the top of the placement platform 4. The outlet end of the air blowing pipe 5 faces the top of the conveyor belt 2 and is aligned with the end of the conveyor. The ends of the two air blowing pipes 5 away from the conveyor belt 2 are connected to an air supply pipe 501. The air blown out by the air blowing pipes 5 can blow the hollow light-proof aluminum-plastic film away from the top of the conveyor belt 2.

[0036] To prevent damage to the bag body from external forces, contamination from the external environment, and to prevent product dehydration, the surface of the injection bag 201 needs to be wrapped with a light-proof aluminum-plastic film. However, since the light-proof film is not visible and the internal contents of the injection bag 201 are not visible, it is currently difficult to identify the injection bag 201 in this situation when it is being transported on the upper surface of the conveyor belt 2. Therefore, the empty bag rejection device of the present invention is proposed. In specific operation, a blower pipe 5 is first set on the side of the end of the conveyor belt 2. When the injection bags 201 arranged at equal intervals are being transported normally on the conveyor belt 2, the compressed air blown out by the blower pipe 5 can blow the hollow light-proof aluminum-plastic film away from the top of the conveyor belt 2, while the light-proof aluminum-plastic film containing the injection bag 201 will remain on the top of the conveyor belt 2 and continue to be transported downwards. This design can quickly and easily solve the problem of empty film without product, facilitate the subsequent use of the injection bag 201, and has strong applicability.

[0037] It should be noted that the gas blown out by the blower pipe 5 is controllable, and the gas pressure is sufficient to blow the hollow light-proof aluminum-plastic film away from the conveyor belt 2, while the light-proof aluminum-plastic film containing the injection bag 201 will not be blown away from the conveyor belt 2.

[0038] It should also be noted that, in this embodiment of the invention, hollow light-proof aluminum-plastic film is marked as a defective product, while light-proof aluminum-plastic film containing injection bag 201 is marked as a qualified product.

[0039] The side of the air supply pipe 501 away from the blower pipe 5 is connected to an external blower. Rollers are installed under the support frame 3, which can move the support frame 3 to a suitable position on the conveyor belt 2. During operation, connecting the air supply pipe 501 to the external blower can control the pressure of the compressed gas, thereby facilitating the blowing of defective products away from the conveyor belt 2. In addition, the rollers designed on the support frame 3 can adaptively adjust the position of the blower pipe 5 according to the position of the end of the conveyor belt 2, which improves the rejection effect of empty bags.

[0040] An inclined recovery plate 6 is installed inside the working platform 1 and on the side of the conveyor belt 2. The inclined recovery plate 6 is designed to be aligned with the air pipe 5. Baffles 7 are installed on both sides of the inclined recovery plate 6. The lower part of the inclined recovery plate 6 is connected to an external recovery cylinder.

[0041] During operation, since the inclined recovery plate 6 is aligned with the blower pipe 5, if there are unqualified products above the conveyor belt 2, the blower pipe 5 can quickly blow the unqualified products into the inclined recovery plate 6 and let them fall into the external recovery cylinder as soon as possible. The baffle 7 has a certain limiting function to prevent unqualified products from falling to the outside of the working platform 1, which is conducive to the subsequent centralized recovery of unqualified products.

[0042] like Figures 2 to 7 As shown, a rotating shaft 8 is rotatably installed inside the working platform 1 and below the end of the first conveyor belt 2. The rotating shaft 8 is connected to the output end of an external drive motor. A transfer disk 9 is fixedly installed on the outer circumferential surface of the rotating shaft 8. A second conveyor belt 10 is installed inside the working platform 1. The second conveyor belt 10 is located below the end of the first conveyor belt 2. A transfer unit is installed on the outer circumferential surface of the transfer disk 9. The transfer unit is used to transfer the qualified injection bag 201 to the top of the second conveyor belt 10.

[0043] During operation, because the air blower 5 continuously blows air upwards onto the conveyor belt 2, the injection bags 201, which are equidistantly arranged on the conveyor belt 2, will be disturbed by the airflow, which is not conducive to the subsequent packaging of qualified products. Therefore, the following embodiment is proposed: when qualified products fall along the rotation direction of the conveyor belt 2, they will fall into the transfer unit on the outer periphery of the transfer plate 9. Under the action of the transfer unit, the qualified injection bags 201 can be transferred to the top of the conveyor belt 10. In this way, the qualified injection bags 201 can be reordered, and it is convenient to package all the injection bags 201 and use them.

[0044] The transfer unit includes a temporary storage rack 11 mounted on the outer periphery of the transfer tray 9. The temporary storage rack 11 has an internal cavity whose shape matches the shape of the injection bag 201. A contact plate 12 is slidably disposed inside the temporary storage rack 11. A first contact 121 is mounted on the lower end face of the contact plate 12, and a second contact 111 is mounted on the bottom wall of the temporary storage rack 11. The first contact 121 and the second contact 111 are arranged on the same vertical plane. During operation, in the initial state, the first contact 121 and the second contact 111 are not in contact. (Refer to attached...) Figure 4 and Figure 6 As shown, the top of the temporary storage rack 11 is aligned with the end of the first conveyor belt 2. When a qualified product falls from the end of the first conveyor belt 2, it will fall into the cavity inside the temporary storage rack 11. The contact plate 12 in the cavity will move downward under the pressure of the qualified product, and drive the first contact 121 and the second contact 111 to contact. At this time, the external controller circuit connected to the rotating shaft 8 is turned on, while the external controller circuit connected to the first conveyor belt 2 is turned off. Therefore, the first conveyor belt 2 will stop rotating first, and the rotating shaft 8 will drive the transfer disk 9 to rotate towards the side closer to the second conveyor belt 10. Then, the qualified products in the cavity of the temporary storage rack 11 will slide down onto the second conveyor belt 10. In this way, the qualified products can be reordered, which is convenient for subsequent product packaging.

[0045] Multiple sets of temporary storage racks 11 are arranged in a circular array on the outer periphery of the transfer tray 9, and rubber pads are attached to the inner wall of the temporary storage racks 11.

[0046] During operation, multiple sets of temporary storage racks 11 are installed on the outer periphery of the transfer tray 9. When a qualified product inside one set of temporary storage racks 11 slides down onto the second conveyor belt 10, the contact plate 12 will move the first contact 121 away from the second contact 111 because the temporary storage rack 11 is in an inclined state. At this time, the other set of temporary storage racks 11 will also move to the position corresponding to the end of the first conveyor belt 2. The external controller circuit connected to the rotating shaft 8 will be disconnected, while the external controller circuit connected to the first conveyor belt 2 will be connected. As a result, the first conveyor belt 2 will continue to transport the products above, which facilitates continuous operation of the products above.

[0047] like Figures 4 to 9 As shown, the inner wall of the temporary storage rack 11 is provided with a sliding groove that matches the contact plate 12. A support spring 13 is installed on the lower end face of the contact plate 12. The side of the support spring 13 away from the contact plate 12 is connected to the inner wall of the temporary storage rack 11. During operation, the sliding groove on the inner wall of the temporary storage rack 11 facilitates the movement of the contact plate 12 to drive the contact point 121, ensuring perfect contact between the contact point 121 and the contact point 111. The support spring 13 is designed to facilitate the separation of the contact point 121 and the contact point 111 when there is no product inside the temporary storage rack 11, thereby facilitating the subsequent repackaging process of qualified products.

[0048] A conveyor belt 14 is provided above the work platform 1 and on one side of the transfer tray 9. The conveyor belt 14 is controlled by an external driver. Multiple transport frames 15 are provided on the upper surface of the conveyor belt 14. The interior of each transport frame 15 has a cavity adapted to the injection bag 201. One set of transport frames 15 is in contact with the temporary storage rack 11. A trigger unit is provided inside each transport frame 15. The trigger unit is used to control the transport frame 15 to move closer to the side of the second conveyor belt 10.

[0049] When working, refer to the appendix Figure 8 As shown, when the temporary storage rack 11 containing qualified products rotates to the side close to the transport rack 15, the qualified products inside the temporary storage rack 11 will slide into the transport rack 15. Then, under the action of the triggering unit of the transport rack 15, the transport rack 15 above the conveyor belt 14 will be pushed onto the second conveyor belt 10, which facilitates the subsequent centralized transfer of qualified products inside multiple transport racks 15.

[0050] The triggering unit includes a slide plate 16 inside the transport frame 15, with a contact point 161 installed at the bottom of the slide plate 16, and a contact point 17 installed on the inner wall of the transport frame 15. An L-shaped bracket 18 is provided inside the working platform 1 and on one side of the transport frame 15. An electric push rod 19 is installed on the side wall of the L-shaped bracket 18, and the telescopic end of the electric push rod 19 is connected to the side wall of one of the transport frames 15. The second conveyor belt 10 and the transmission belt 14 are arranged in the same plane.

[0051] During operation, when a qualified product slides from the temporary storage rack 11 into the transport rack 15, the slide plate 16 is pressed by the qualified product. The slide plate 16 will cause the contact point 3 161 and contact point 4 17 to come into contact. At this time, the external circuit is turned on, which will control the extension end of the electric push rod 19 to move closer to the transport rack 15 it is in contact with, so that the transport rack 15 is pushed onto the second conveyor belt 10. After that, the electric push rod 19 returns to the initial position, and the next set of transport racks 15 above the conveyor belt 14 will move to the corresponding position of the temporary storage rack 11. By repeating this process, multiple transport racks 15 can be moved above the conveyor belt 14. This makes it convenient for the subsequent robotic arm process to lift the qualified products inside the transport racks 15 that are side by side and transfer them to the external packaging box, thereby facilitating the subsequent centralized packaging and use of the injection bag 201.

[0052] It should be noted that a transfer tray 9 and a temporary storage rack 11 are designed, which facilitates the reordering of injection bags 201 that are tilted due to wind force. This makes it easier to centrally process qualified injection bags 201 and transfer the centralized injection bags 201 to the outer packaging box through an external robotic arm process.

[0053] The bottom of the transport frame 15 is equipped with a spring, and the upper end of the spring is connected to the bottom of the slide plate 16. This design allows the slide plate 16 to easily recover when no force is applied.

[0054] During operation, to prevent damage to the bag body from external forces, contamination from the external environment, and to prevent product dehydration, the surface of the injection bag 201 needs to be wrapped with a light-proof aluminum-plastic film. However, since the film is light-proof and the internal contents of the injection bag 201 are not visible, it is currently difficult to identify the injection bag 201 in this situation when it is being transported on the upper surface of the conveyor belt 2. Therefore, the empty bag rejection device of this invention is proposed. In specific operation, a blower pipe 5 is first set at the end side of the conveyor belt 2. When the injection bags 201 arranged at equal intervals are being transported normally on the conveyor belt 2, the compressed air blown out by the blower pipe 5 can remove the hollow contents of the film. The light-proof aluminum-plastic film is blown away from the top of conveyor belt 2, while the light-proof aluminum-plastic film containing the injection bag 201 remains above conveyor belt 2 and continues to be conveyed downwards. This design can quickly and easily solve the problem of empty film without products, facilitate the subsequent use of injection bag 201, and has strong applicability. Since the inclined recovery plate 6 is aligned with the blowing pipe 5, if there are unqualified products above conveyor belt 2, the blowing pipe 5 can quickly blow the unqualified products into the inclined recovery plate 6 and drop them into the external recovery cylinder as soon as possible. The baffle 7 has a certain limiting function to prevent unqualified products from falling to the outside of the working platform 1, which is conducive to the centralized recycling of unqualified products in the future.

[0055] In the initial state, contact 121 and contact 111 are not in contact; refer to the appendix. Figure 4 and Figure 6 As shown, the top of the temporary storage rack 11 is aligned with the end of the first conveyor belt 2. When a qualified product falls from the end of the first conveyor belt 2, it will fall into the cavity inside the temporary storage rack 11. The contact plate 12 in the cavity will move downward under the pressure of the qualified product, and drive the first contact 121 and the second contact 111 to contact. At this time, the external controller circuit connected to the rotating shaft 8 is turned on, while the external controller circuit connected to the first conveyor belt 2 is turned off. Therefore, the first conveyor belt 2 will stop rotating first, and the rotating shaft 8 will drive the transfer disk 9 to rotate towards the side closer to the second conveyor belt 10. Then, the qualified products in the cavity of the temporary storage rack 11 will slide down onto the second conveyor belt 10. In this way, the qualified products can be reordered, which is convenient for subsequent product packaging.

[0056] Because multiple sets of temporary storage racks 11 are provided on the outer periphery of the transfer tray 9, when a qualified product inside one set of temporary storage racks 11 slides down onto the second conveyor belt 10, the contact plate 12 will move the first contact 121 away from the second contact 111 because the temporary storage rack 11 is in an inclined state. At this time, the other set of temporary storage racks 11 will also move to the position corresponding to the end of the first conveyor belt 2, and the external controller circuit connected to the rotating shaft 8 will be disconnected, while the external controller circuit connected to the first conveyor belt 2 will be connected. As a result, the first conveyor belt 2 will continue to transport the products above, which facilitates continuous operation of the products above. When a qualified product slides from the temporary storage rack 11 into the transport rack 15, the slide plate 16 receives the qualified product. Under pressure, the slide plate 16 will cause contact points 3 161 and 4 17 to come into contact. At this time, the external circuit is turned on, which will control the extension end of the electric push rod 19 to move closer to the transport frame 15 it is in contact with, so that the transport frame 15 is pushed onto the second conveyor belt 10. After that, the electric push rod 19 returns to the initial position, and the next set of transport frames 15 above the conveyor belt 14 will move to the position corresponding to the temporary storage rack 11. By repeating this process, multiple transport frames 15 can be moved above the conveyor belt 14. This makes it convenient for the subsequent robotic arm process to lift the qualified products inside the transport frames 15 that are side by side and transfer them to the external packaging box, thereby facilitating the subsequent centralized packaging and use of the injection bag 201.

[0057] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. An empty bag rejection device for the production of injection soft bags, comprising a working platform (1), characterized in that: A conveyor belt (2) is installed above the work platform (1), and injection bags (201) arranged at equal intervals are placed above the conveyor belt (2). The injection bags (201) are packaged with light-proof aluminum-plastic film. The conveyor belt (2) is transported by multiple transmission wheels, and the transmission wheels are controlled by an external controller. A support frame (3) is installed on the side of the working platform (1), and a placement platform (4) is fixedly installed on the top of the support frame (3). Two air blowers (5) are installed on the top of the placement platform (4). The outlet end of the air blower (5) faces the top of the conveyor belt (2) and is aligned with the end of the conveyor. The ends of the two air blowers (5) away from the conveyor belt (2) are connected to an air supply pipe (501). The gas blown out by the air blower (5) can blow the hollow light-proof aluminum-plastic film away from the top of the conveyor belt (2). An inclined recovery plate (6) is installed inside the working platform (1) and on the side of the conveyor belt (2). The inclined recovery plate (6) is designed to be flush with the blower pipe (5). Baffles (7) are installed on both sides of the inclined recovery plate (6). The lower part of the inclined recovery plate (6) is connected to the external recovery cylinder. A rotating shaft (8) is rotatably installed inside the working platform (1) and below the end of the first conveyor belt (2). The rotating shaft (8) is connected to the output end of an external drive motor. A transfer disk (9) is fixedly installed on the outer circumferential surface of the rotating shaft (8). A second conveyor belt (10) is installed inside the working platform (1). The second conveyor belt (10) is located below the end of the first conveyor belt (2). A transfer unit is installed on the outer circumferential surface of the transfer disk (9). The transfer unit is used to transfer qualified injection bags (201) to the top of the second conveyor belt (10). The transfer unit includes a temporary storage rack (11) installed on the outer periphery of the transfer tray (9). The temporary storage rack (11) has a cavity inside, the shape of which is adapted to the shape of the injection bag (201). A contact plate (12) is slidably arranged inside the temporary storage rack (11). A contact point one (121) is installed on the lower end face of the contact plate (12), and a contact point two (111) is installed on the bottom wall of the temporary storage rack (11). The contact point one (121) and the contact point two (111) are arranged on the same vertical plane. Multiple sets of temporary storage racks (11) are arranged in a circular array on the outer periphery of the transfer plate (9), and rubber pads are attached to the inner wall of the temporary storage racks (11). The inner wall of the temporary storage rack (11) is provided with a sliding groove that is compatible with the contact plate (12). A support spring (13) is installed on the lower end face of the contact plate (12). The side of the support spring (13) away from the contact plate (12) is connected to the inner wall of the temporary storage rack (11). In the initial state, contact one (121) and contact two (111) are not in contact; at this time, the top of the temporary storage rack (11) is aligned with the end of the conveyor belt one (2). When a qualified product falls from the end of the conveyor belt one (2), it will fall into the cavity inside the temporary storage rack (11). The contact plate (12) in the cavity will move downward under the pressure of the qualified product, and drive contact one (121) and contact two (111) to contact. At this time, the external controller circuit connected to the rotating shaft (8) is connected, while the external controller circuit connected to the conveyor belt one (2) is disconnected. Multiple sets of temporary storage racks (11) are provided on the outer periphery of the transfer plate (9). When a qualified product inside one set of temporary storage racks (11) slides down above the second conveyor belt (10), the temporary storage rack (11) is tilted. The contact plate (12) will drive the first contact (121) away from the second contact (111). The other set of temporary storage racks (11) will also move to the position corresponding to the end of the first conveyor belt (2). The external controller circuit connected to the rotating shaft (8) is disconnected, while the external controller circuit connected to the first conveyor belt (2) is connected.

2. The empty bag rejection device for producing injection soft bags according to claim 1, characterized in that: The side of the air supply pipe (501) away from the blower pipe (5) is connected to an external blower. A roller is installed under the support frame (3), which can drive the support frame (3) to a suitable position on the conveyor belt (2).

3. The empty bag rejection device for producing injection soft bags according to claim 1, characterized in that: A conveyor belt (14) is provided above the work platform (1) and on one side of the transfer tray (9). The conveyor belt (14) is controlled by an external driver. Multiple transport racks (15) are provided on the upper surface of the conveyor belt (14). The interior of the transport rack (15) is provided with a cavity adapted to the injection bag (201). One set of transport racks (15) is in contact with the temporary storage rack (11). A trigger unit is provided inside the transport rack (15). The trigger unit is used to control the transport rack (15) to move closer to the side of the second conveyor belt (10).

4. The empty bag rejection device for producing injection soft bags according to claim 3, characterized in that: The triggering unit includes a slide plate (16) inside the transport frame (15), a contact point three (161) is installed at the bottom of the slide plate (16), a contact point four (17) is installed on the inner wall of the transport frame (15), an L-shaped bracket (18) is provided inside the working platform (1) and on one side of the transport frame (15), an electric push rod (19) is installed on the side wall of the L-shaped bracket (18), and the telescopic end of the electric push rod (19) is connected to the side wall of one of the transport frames (15); the second conveyor belt (10) and the transmission belt (14) are arranged in the same plane.

5. The empty bag rejection device for producing injection soft bags according to claim 4, characterized in that: The bottom of the transport frame (15) is equipped with a spring, and the upper end of the spring is connected to the bottom of the slide plate (16).

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