Conveying path switching mechanism for packaging bags

Abstract

The utility model discloses a conveying path switching mechanism for packaging bags. The conveying path switching mechanism is arranged between two adjacent stations on a packaging bag production path. The conveying path switching mechanism comprises an upstream conveying belt set and a downstream conveying belt set which are sequentially arranged along the production path, wherein the inlet end of the upstream conveying belt set is communicated with an outlet of an upstream station located on the production path. The downstream conveying belt set comprises two conveying channels arranged side by side along the production path. And the outlet end of the upstream conveying belt group can swing between the conveying inlets of the two conveying channels of the downstream conveying belt group so as to switch conveying paths. The packaging bag sorting device automatically sorts packaging bags by switching transmission paths, improves production efficiency, and has the advantages of being simple in structure and high in flexibility.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging bags, and particularly relates to a conveying path switching mechanism for packaging bags. Background Art

[0002] Packaging bags are closely related to our life. Common packaging bags include non-woven bags, paper bags, plastic bags, etc. Packaging bags have the characteristics of environmental protection and practicality, and have been vigorously promoted and used in recent years, thus promoting the rapid development of the full-automatic forming technology of packaging bags. With the development of packaging bags in China in recent years, the technology of packaging bag forming machines has become more and more mature. Existing packaging bags are basically formed by a packaging bag forming machine in one processing. During the processing, a flat sheet is pressed into a cubic packaging bag through a mold and bonded into shape.

[0003] During the forming process of existing packaging bags, it is possible to produce packaging bags of different specifications or different outer packaging patterns during production. These packaging bags need to be sorted after forming, or when there are defective packaging bags, the defective packaging bags need to be excluded. However, existing packaging bag forming machines can only sort or select packaging bags by manual picking after the packaging bags are formed, and the packaging bag forming machine cannot sort or transport packaging bags separately during the forming process of packaging bags.

[0004] Therefore, there is a problem that packaging bags cannot be sorted during the forming process in the prior art. Content of the Utility Model

[0005] The purpose of the utility model is to solve the problem that packaging bags cannot be sorted during the forming process in the prior art.

[0006] To solve the above technical problem, an embodiment of the utility model discloses a conveying path switching mechanism for packaging bags. The conveying path switching mechanism is arranged between two adjacent workstations on the packaging bag production path. The conveying path switching mechanism includes an upstream conveyor belt group and a downstream conveyor belt group arranged in sequence along the production path. The inlet end of the upstream conveyor belt group is communicated with the outlet of the upstream workstation on the production path. The downstream conveyor belt group includes two conveying channels arranged side by side along the production path. And the outlet end of the upstream conveyor belt group can swing between the conveying inlets of the two conveying channels of the downstream conveyor belt group to switch the conveying path.

[0007] With the above technical solution, the present utility model provides a conveying path switching mechanism for packaging bags. The outlet end of the upstream conveyor belt group can swing between the conveying inlets of the two conveying channels of the downstream conveyor belt group to switch the conveying path, thereby realizing automatic sorting of packaging bags by switching the transmission path, and the sorting efficiency is higher. For example, when sorting qualified product packaging bags and waste product packaging bags, the two conveying channels of the downstream conveyor belt group are respectively a qualified product conveying channel and a waste product conveying channel. When the outlet end of the upstream conveyor belt group swings to switch the conveying path, it can convey the qualified product packaging bags and waste product packaging bags into different conveying channels respectively, improving the production efficiency, and having the advantages of simple structure and high flexibility.

[0008] Furthermore, in the conveying path switching mechanism for packaging bags disclosed in the present application, the outlet end of the upstream conveyor belt group can swing between the conveying inlets of the two conveying channels of the downstream conveyor belt group, and can flexibly switch the conveying path of the packaging bags according to production requirements. Especially, for example, when producing packaging bags of different specifications or different outer packaging patterns, the flexibility and efficiency are higher. And this conveying path switching mechanism is simply designed and is easy to be integrated into the existing packaging bag production line. The automatic sorting and flexible conveying path switching can significantly reduce manual intervention, speed up the production process, and improve the overall production efficiency.

[0009] Preferably, in the conveying path switching mechanism for packaging bags disclosed in the present utility model, the upstream conveyor belt group includes an upstream conveyor belt extending along the production path and a driving mechanism. And the upstream end of the upstream conveyor belt close to the upstream station is rotatably arranged on the frame.

[0010] The driving mechanism is arranged at the downstream end of the upstream conveyor belt close to the downstream conveyor belt group, and includes a driving component, a rotating cam and a transmission rod arranged on the frame. The power output end of the driving component is in transmission connection with the rotating cam and drives the rotating cam to rotate. Wherein, one end of the transmission rod is pivotally connected to a part of the rotating cam close to the outer circumference, and the other end of the transmission rod is pivotally connected to one end of the upstream conveyor belt close to the downstream conveyor belt group.

[0011] With the above technical solution, the cooperation structure of the rotating cam and the transmission rod realizes the precise control of the displacement of the end of the conveyor belt through the geometric characteristics of the cam curve, ensures that the packaging bags can accurately fall into the specified downstream conveying channel, and has higher transmission efficiency.

[0012] Further preferably, the driving component includes a driving motor and a transmission belt group fixedly arranged on the frame. The power output end of the driving motor is in transmission connection with the transmission belt group, and the output end of the transmission belt group is in transmission connection with the rotating cam. Adopting this structure effectively improves the transmission accuracy of path switching during the sorting of packaging bags and solves the problem of unstable power transmission existing in the traditional mechanism.

[0013] Further preferably, each conveyor belt includes a driving rotating shaft, a driven rotating shaft, a belt member, and a rotating shaft connecting plate. The belt member successively surrounds the outer walls of the driving rotating shaft and the driven rotating shaft. The driving rotating shaft and the driven rotating shaft are respectively rotatably arranged at both ends of the rotating shaft connecting plate. At least one side of the two conveyor belts is further provided with a fixed connecting plate extending along the overlapping direction. The fixed connecting plate is located at the part of the rotating shaft connecting plate close to the downstream end. Moreover, both ends of the fixed connecting plate are respectively rotatably connected to the two rotating shaft connecting plates on the same side.

[0014] Adopting the above technical solution, the two conveyor belts are rotatably connected through the fixed connecting plate, enhancing the structural stability and connection strength, improving the material transmission efficiency and continuity, and at the same time having good adaptability, flexibility and low maintenance cost.

[0015] Even more preferably, the outlet end of the upstream conveyor belt group swings around a rotating shaft parallel to the width direction of the upstream conveyor belt. The upstream station is a packaging bag forming station, and the downstream station is a packaging bag packing station. And, the two conveying channels of the downstream conveyor belt group are respectively a packing conveying channel and a waste conveying channel. Brief Description of the Drawings

[0016] Figure 1 It is a simple structural schematic diagram of the conveying path switching mechanism of the packaging bag provided by the embodiment of the present invention;

[0017] Figure 2 It is a specific structural schematic diagram of the conveying path switching mechanism of the packaging bag provided by the embodiment of the present invention;

[0018] Figure 3 It is a partial structural schematic diagram of the upstream conveyor belt of the conveying path switching mechanism of the packaging bag provided by the embodiment of the present invention;

[0019] Figure 4 It is a structural schematic diagram of the camera and light source arranged upstream of the conveying path switching mechanism of the packaging bag provided by the embodiment of the present invention.

[0020] Description of the Reference Numerals:

[0021] 10. Upstream station;

[0022] 100. Upstream conveyor belt group;

[0023] 110. Driving mechanism;

[0024] 111. Rotating cam; 112. Transmission rod; 113. Driving motor; 114. Transmission belt; 115. Driving transmission gear; 116. Driven transmission gear; 117. Rotating cross bar;

[0025] 120. Upstream conveyor belt;

[0026] 121, conveyor belt; 122, upstream conveying channel; 123, driving rotating shaft; 124, driven rotating shaft; 125, belt member; 126, rotating shaft connecting plate; 127, fixed connecting plate; 128, conveyor belt positioning wheel;

[0027] 130, downstream conveyor belt group;

[0028] 131, conveying channel;

[0029] 140, camera; 150, light source. Specific implementation manner

[0030] In the prior art, the packaging bag forming technology has achieved automated production, but the sorting process still relies on manual operation. When it is necessary to switch products of different specifications or eliminate defective products, the operator needs to manually select or stop the machine to adjust the equipment, resulting in the interruption of the production process and affecting the overall efficiency. Especially in a continuous production line, manual sorting not only increases the labor intensity but also may cause the mixing of qualified products and defective products, making it impossible to achieve accurate sorting. Therefore, there is a problem in the prior art that the packaging bag cannot be sorted during the forming process.

[0031] To solve the problem that the packaging bag cannot be sorted in the prior art, the present application discloses a conveying path switching mechanism for a packaging bag, including an upstream conveyor belt group and a downstream conveyor belt group. The downstream conveyor belt group includes two conveying channels arranged side by side. The outlet end of the upstream conveyor belt group can swing between the conveying inlets of the two conveying channels to switch the conveying path. In this way, when sorting packaging bags of different specifications or eliminating defective packaging bags, the upstream conveyor belt group can be swung to switch different conveying paths, thereby realizing automatic diversion. Moreover, the swinging outlet end can complete the path switching within a limited area and avoid interference with downstream equipment at the same time.

[0032] Furthermore, the packaging bags involved in the present application can be various common bag types, such as non-woven bags, paper bags, plastic bags, cloth bags, aluminum foil bags, etc. This embodiment does not make specific limitations on this. Next, a detailed description will be given to the conveying path switching mechanism for the packaging bag disclosed in the present application.

[0033] The implementation manner of this embodiment discloses a conveying path switching mechanism for a packaging bag. The conveying path switching mechanism is arranged between two adjacent workstations on the packaging bag production path. The conveying path switching mechanism includes an upstream conveyor belt group and a downstream conveyor belt group arranged in sequence along the production path.

[0034] Two adjacent workstations on the production path of the packaging bag can be any two adjacent workstations on the packaging bag production equipment. For example, in one implementation, the upstream workstation can be the packaging bag forming workstation, and the downstream workstation can be the packaging bag packing workstation. In another implementation, the upstream workstation can be the bag folding workstation, and the downstream workstation can be the packaging bag packing workstation. The packaging bag forming workstation refers to the equipment area where sheet materials are processed into three-dimensional bag bodies, and the packing workstation refers to the process area where the formed packaging bags are collected and sealed. The specific installation position of the conveying path switching mechanism of the packaging bag can be adjusted by those skilled in the art on the production path according to actual needs, and this embodiment does not make specific limitations on this.

[0035] Further, in this embodiment, the production path refers to: the sheet material of the packaging bag is stamped and bonded into a finished packaging bag, and then from the forming workstation of the finished packaging bag to bag folding, and then to the packaging of the packaging bag. And in this embodiment, preferably, the conveying path switching mechanism of the packaging bag is arranged after the packaging bag forming workstation on the production path.

[0036] Specifically, please refer to Figure 1 the side schematic diagram shown in Figure 1 The straight arrow in it indicates the conveyable route of the packaging bag, and the dotted arrow indicates the swinging direction of the outlet end of the upstream conveyor belt group 100. In this embodiment, the inlet end of the upstream conveyor belt group 100 is connected to the outlet of the upstream workstation 10 located on the production path. The downstream conveyor belt group 130 includes two conveying channels 131 arranged side by side along the production path. And the outlet end of the upstream conveyor belt group 100 can swing between the conveying inlets of the two conveying channels 131 of the downstream conveyor belt group 130 to switch the conveying path. And more specifically, the outlet end of the upstream conveyor belt group 100 swings around a rotating shaft parallel to the width direction of the upstream conveyor belt 120. Referring to Figure 2 for comparison, when the outlet end of the upstream conveyor belt group 100 swings, it rotates around the driving rotating shaft 123, and the driving rotating shaft 123 is arranged along the width direction of the upstream conveyor belt 120.

[0037] More specifically, in this embodiment, the swinging of the outlet end of the upstream conveyor belt group 100 can be realized by various driving mechanisms. For example, it can be realized by a cam mechanism for reciprocating swinging, or by a connecting rod mechanism for reciprocating swinging, or by a cylinder mechanism for reciprocating swinging.

[0038] More specifically, in this embodiment, refer to Figure 1For illustration, the downstream conveyor belt group 130 includes two conveyor channels 131 arranged side by side along the production path, which means that there are two conveyor channels 131 provided on the production path, and the side-by-side arrangement can be adjusted according to actual needs, but the mixing of different types of products should be avoided. When the outlet end of the upstream conveyor belt group 100 swings and fits into one of the corresponding conveyor channels 131, the upstream conveyor belt group 100 and the corresponding conveyor channel 131 are connected. For example, the two conveyor channels 131 can be set as the first conveyor channel and the second conveyor channel corresponding to packaging bags of different specifications, or they can be the qualified product conveyor channel and the waste product conveyor channel corresponding to qualified packaging bags and waste packaging bags.

[0039] Taking the two conveyor channels 131 corresponding to the qualified product conveyor channel and the waste product conveyor channel as an example for illustration, the qualified product conveyor channel is for conveying qualified packaging bags, and the waste product conveyor channel is for conveying waste packaging bags. When the packaging bag conveyed from the inlet end of the upstream conveyor belt group 100 is a qualified one, the outlet end of the upstream conveyor belt group 100 is connected to the conveying inlet of the qualified product conveyor channel. When the packaging bag conveyed from the inlet end of the upstream conveyor belt group 100 is a waste one, the outlet end of the upstream conveyor belt group 100 swings to be connected to the conveying inlet of the waste product conveyor channel, so as to carry out waste discharge treatment. When the packaging bags in normal production are qualified ones, the outlet end of the upstream conveyor belt group 100 is connected to the conveying inlet of the qualified product conveyor channel and enters the subsequent packing station for packing. Only when there are waste packaging bags does the outlet end of the upstream conveyor belt group 100 swing to be connected to the conveying inlet of the waste product conveyor channel for waste discharge. The actual installation position and installation method of the waste product conveyor channel can be adjusted according to requirements, and this embodiment does not make specific limitations on this.

[0040] Another example is to illustrate with the two conveyor channels 131 corresponding to conveying packaging bags of different specifications or models: The two conveyor channels 131 include the first conveyor channel and the second conveyor channel. Among them, the first conveyor channel corresponds to the packaging bags of the first specification, and the second conveyor channel corresponds to the packaging bags of the second specification. The size of the packaging bags of the first specification is larger than that of the packaging bags of the second specification. When the packaging bags of the first specification are conveyed from the inlet end of the upstream conveyor belt group 100, the outlet end of the upstream conveyor belt group 100 is connected to the conveying inlet of the first conveyor channel. When the packaging bags of the second specification are conveyed from the inlet end of the upstream conveyor belt group 100, the outlet end of the upstream conveyor belt group 100 swings to be connected to the conveying inlet of the second conveyor channel. After receiving packaging bags of different specifications, the outlet end of the upstream conveyor belt group 100 swings between the conveying inlets of the two conveyor channels 131, so as to realize the sorting of different packaging bags.

[0041] With this structural design, the present utility model provides a conveying path switching mechanism for a packaging bag. The outlet end of the upstream conveyor belt group 100 can swing between the conveying inlets of the two conveying channels 131 of the downstream conveyor belt group 130 to switch the conveying path, so as to realize automatic sorting of the packaging bags by switching the transmission path. For example, when sorting qualified product packaging bags and waste product packaging bags, the two conveying channels 131 of the downstream conveyor belt group 130 are respectively the qualified product conveying channel and the waste product conveying channel. When the outlet end of the upstream conveyor belt group 100 swings to switch the conveying path, the qualified product packaging bags and the waste product packaging bags can be respectively conveyed into different conveying channels 131, improving the production efficiency, and having the advantages of simple structure and high flexibility.

[0042] Furthermore, in the conveying path switching mechanism for a packaging bag disclosed in the present application, the outlet end of the upstream conveyor belt group 100 can swing between the conveying inlets of the two conveying channels 131 of the downstream conveyor belt group 130, and can flexibly switch the conveying path of the packaging bag according to production requirements. Especially, for example, when producing packaging bags of different specifications or different outer packaging patterns, the flexibility and efficiency are higher. And the design of this conveying path switching mechanism is simple and is easy to be integrated into the existing packaging bag production line. The automatic sorting and flexible conveying path switching can significantly reduce manual intervention, speed up the production process, and improve the overall production efficiency.

[0043] Existing equipment needs to stop the machine to adjust the conveying direction or rely on manual sorting, while this solution realizes dynamic path switching through a mechanical structure. Traditional fixed conveyor belts can only convey in a single direction, while the swinging outlet end completes the direction adjustment while keeping the continuous conveying of materials. It not only solves the problem of low efficiency of manual sorting, but also avoids the production interruption caused by equipment shutdown.

[0044] Furthermore, in one of the preferred implementation manners disclosed in this embodiment, please refer to Figure 2 and Figure 3 , the upstream conveyor belt group 100 includes an upstream conveyor belt 120 extending along the production path and a driving mechanism 110. And the upstream end of the upstream conveyor belt 120 close to the upstream station 10 is rotatably arranged on the frame. The driving mechanism 110 is arranged at the downstream end of the upstream conveyor belt 120 close to the downstream conveyor belt group 130, and includes a driving component, a rotating cam 111 and a transmission rod 112 arranged on the frame. The power output end of the driving component is in transmission connection with the rotating cam 111 and drives the rotating cam 111 to rotate. Among them, one end of the transmission rod 112 is pivotally connected to a position close to the outer circumference of the rotating cam 111, and the other end of the transmission rod 112 is pivotally connected to one end of the upstream conveyor belt 120 close to the downstream conveyor belt group 130.

[0045] In this embodiment, the driving component refers to a device that generates rotational power. Specifically, a structure combining a motor and a gear set or a motor and a conveyor belt set can be adopted to achieve this. The rotating cam 111 refers to a rotating component with an eccentric profile. Specifically, a disk cam or a cylindrical cam structure can be adopted, and the rotational motion is converted into a linear reciprocating motion through the change of the outer peripheral trajectory. The transmission rod 112 refers to a rigid connecting rod connecting the cam and the conveyor belt. A metal rod or a carbon fiber composite rod can be used. Its function is to transmit the displacement generated by the cam to the end of the conveyor belt. The pivotally connected means a connection method that allows a component to rotate around a fixed axis, such as a rotating connection. Specifically, a hinge or a bearing structure can be adopted to ensure the degree of freedom of movement.

[0046] Specifically, please refer to Figure 2 , the output shaft of the driving component drives the rotating cam 111 to continuously rotate. Since one end of the transmission rod 112 is hinged at the eccentric position on the outer periphery of the rotating cam 111, when the rotating cam 111 rotates, the other end of the transmission rod 112 generates a periodic reciprocating swing. This swinging motion is transmitted to the downstream end of the upstream conveyor belt 120 through the transmission rod 112, causing the upstream conveyor belt 120 to rotate around the driving rotating shaft 123. By adjusting the shape of the cam profile curve, the swing amplitude and switching frequency of the conveyor belt can be accurately controlled. This mechanical transmission method ensures that the packaging bag can accurately fall into the specified downstream conveying channel 131, and the transmission efficiency is higher. For example, please refer to Figure 2 and Figure 3 , in this embodiment, with such a structural design, when the rotating cam 111 rotates half a turn, the transmission rod 112 will drive the downstream end of the upstream conveyor belt 120 to switch between two conveying channels 131 once. When the rotating cam 111 continues to rotate half a turn, the transmission rod 112 will drive the downstream end of the upstream conveyor belt 120 to switch back to the initial position. When the rotating cam 111 rotates continuously or intermittently, the downstream end of the upstream conveyor belt 120 can be reciprocally switched between two conveying channels 131.

[0047] More specifically, please refer to Figure 2 , in this embodiment, the conveyor belt set includes a conveyor belt 114, a driving transmission gear 115, and a driven transmission gear 116. The driving transmission gear 115 is fixedly arranged at the output end of the driving motor 113. The driven transmission gear 116 is coaxially arranged with the rotating cam 111. The conveyor belt 114 is sequentially wound around and meshed with the outer peripheries of the driving transmission gear 115 and the driven transmission gear 116, and the diameter of the driven transmission gear 116 is larger than the diameter of the driving transmission gear 115.

[0048] In this embodiment, the transmission belt set refers to a power transmission device composed of gears and a transmission belt 114, which can be specifically implemented by a combination of a synchronous pulley and a synchronous belt, and power is transmitted by gear meshing. The active transmission gear 115 refers to a gear directly connected to the output end of the drive motor 113, and is used to receive the rotational power output by the motor. The driven transmission gear 116 refers to a gear coaxially mounted with the rotating cam 111, and its diameter is larger than the active gear to form a reduction ratio. The transmission belt 114 refers to a flexible transmission component surrounding the outer periphery of the two gears, which can be specifically implemented by a synchronous belt made of materials such as rubber, polyurethane, etc., and slipping is avoided by tooth meshing.

[0049] Specifically, after the driving motor 113 is started, the power is transmitted to the transmission belt 114 through the active transmission gear 115, driving the driven transmission gear 116 to rotate. Since the diameter of the driven gear is larger, its rotation speed is lower than that of the active gear, thereby forming a reduction transmission. The rotating cam 111 rotates synchronously with the driven gear, pushing the transmission rod 112 to drive the upstream conveyor belt 120 to swing. The meshing mode of the gear and the transmission belt 114 prevents slippage during the power transmission process, ensuring transmission accuracy. The reduction design reduces the rotation speed of the cam, thereby reducing the inertial impact when the conveyor belt swings and improving the stability of the movement. The layout of the transmission belt 114 around the outer periphery of the two gears makes the meshing surface evenly stressed, avoiding local wear and causing transmission failure.

[0050] Through this structural design, the diameter difference between the driving gear and the driven gear forms a reduction ratio, which reduces the cam speed and makes the conveyor belt swing more smooth and controllable. The transmission accuracy of the path switching during the packaging bag sorting process is effectively improved. The reduction mechanism design makes the swinging action smoother, avoiding the packaging bag from shifting or tipping over when the path is switched. The meshing transmission mode of the gear and the transmission belt 114 reduces the operating noise, reduces the maintenance frequency, and improves the overall reliability of the sorting mechanism.

[0051] More specifically, see Figure 2 The driving assembly further includes a rotating cross bar 117 rotatably disposed on the frame, and the driven transmission gear 116 is coaxially disposed on the rotating cross bar 117 with the rotating cam 111 .

[0052] The rotating cam 111, the transmission rod 112, and the transmission belt group are symmetrically arranged on both sides of the upstream conveyor belt 120 in the width direction. And the power output end of the driving motor 113 is connected to the transmission belt groups on both sides. The symmetrical arrangement of the transmission belt group means that the driving gear, the driven gear and the transmission belt 114 form a mirror layout on both sides, which can be achieved by installing a combination of gears and synchronous belts of the same module on both sides of the frame, and its function is to achieve uniform distribution of driving force through the double-sided transmission mechanism.

[0053] In this embodiment, the rotating cross bar 117 refers to a shaft-like component extending in a direction perpendicular to the production path. Specifically, it can be implemented by a metal round bar or a rotating shaft with bearing supports. Its two ends are rotatably connected to the frame through bearing seats. The coaxial arrangement of the driven transmission gear 116 and the rotating cam 111 means that the two are fixedly installed on the same axis of the rotating cross bar 117. Specifically, it can be achieved through keyway fitting or flange connection, so that the rotation of the rotating cross bar 117 synchronously drives the rotation of the driven transmission gear 116 and the rotating cam 111. The rotating cross bar 117 serves as a support shaft body, providing a common rotation axis for the driven transmission gear 116 and the rotating cam 111. When the power of the drive motor 113 is transmitted to the driving transmission gear 115 through the transmission belt 114, the driving transmission gear 115 drives the driven transmission gear 116 to rotate, and then drives the rotating cross bar 117 to rotate around its axis. Since the rotating cam 111 and the driven transmission gear 116 are coaxially fixed to the rotating cross bar 117, the rotation of the rotating cross bar 117 will be synchronously transmitted to the rotating cam 111, and the eccentric motion of the rotating cam 111 is converted into the swing at the end of the upstream conveyor belt 120 through the transmission rod 112. Through the rigid support of the rotating cross bar 117, the rotational movements of the driven transmission gear 116 and the rotating cam 111 maintain strict coaxiality, avoiding the phase deviation that may occur in the independent installation of multiple shafts, thus ensuring the stability of the transmission process.

[0054] More specifically, please refer to Figure 2 and Figure 3 , in this embodiment, the upstream conveyor belt 120 includes two overlapping conveyor belts 121. The two conveyor belts 121 are spaced apart in the overlapping direction, and an upstream conveying channel 122 for the movement of packaging bags is formed in the middle. Each conveyor belt 121 includes a driving rotating shaft 123, a driven rotating shaft 124, a belt member 125, and a rotating shaft connecting plate 126. The belt member 125 sequentially surrounds the outer walls of the driving rotating shaft 123 and the driven rotating shaft 124. The driving rotating shaft 123 and the driven rotating shaft 124 are respectively rotatably arranged at both ends of the rotating shaft connecting plate 126. At least one side of the two conveyor belts 121 is also provided with a fixed connecting plate 127 extending in the overlapping direction. The fixed connecting plate 127 is located at the part of the rotating shaft connecting plate 126 close to the downstream end, and both ends of the fixed connecting plate 127 are rotatably connected to the two rotating shaft connecting plates 126 on the same side.

[0055] In this embodiment, the two overlapping conveyor belts 121 refer to two independent conveyor belts 121 arranged one above the other. The spaced arrangement of the conveyor belts 121 means that there is a gap between the two, and the width of the gap can be adjusted by adjusting the distance between the rotating shafts or the installation position, so as to adapt to the clamping requirements of packaging bags with different thicknesses. The upstream conveying channel 122 refers to the area between the two conveyor belts 121, and its width is determined by the spacing distance. The packaging bags are driven forward by the frictional force of the two conveyor belts 121 on both sides in this channel.

[0056] The driving rotating shaft 123 refers to the rotating shaft used to drive the conveyor belt 121 to operate. Specifically, it can be realized by a metal shaft body driven by a motor, and the belt member 125 is driven to move through power input. The driven rotating shaft 124 refers to the passive rotating shaft that cooperates with the driving rotating shaft 123. Specifically, it can be a metal shaft body supported by bearings and is used to maintain the tension state of the belt member 125. The rotating shaft connecting plate 126 refers to the supporting structure for fixing the driving rotating shaft 123 and the driven rotating shaft 124. Specifically, it can be made of a steel plate or an aluminum alloy plate, and the rotatable installation of the rotating shaft is realized by arranging bearing seats at both ends. The fixed connecting plate 127 refers to the rigid member connecting the two conveyor belts 121 and the rotating shaft connecting plate 126. Specifically, it can be a steel plate with a rotary joint, and the synchronous swing of the downstream ends of the two conveyor belts 121 is realized through the rotating connection point.

[0057] And in this embodiment, through the combined structure of the rotating shaft connecting plate 126 and the fixed connecting plate 127, the downstream ends of the two conveyor belts 121 are rigidly connected as a whole, and synchronous movement is realized during path switching, eliminating the risk of deformation caused by unilateral force. At the same time, the rotating connection design of the fixed connecting plate 127 allows the two conveyor belts 121 to maintain a stable relative position during the swinging process, avoiding motion jamming caused by mechanical interference.

[0058] Please refer to Figure 3 , conveyor belt positioning wheels 128 are arranged on both sides of the belt member 125. The conveyor belt positioning wheels 128 refer to the guiding devices arranged along the edge of the conveyor belt 121. Specifically, they can be annular grooved wheel bodies and are installed on the rotating shaft connecting plate 126 through bearings. The width of its limiting groove is adapted to the edge thickness of the belt member 125 and is used to limit the lateral displacement of the belt member 125 during operation. Through this structure, the belt member 125 is constrained within the limiting groove during transmission, avoiding deviation caused by tension change or uneven force. The limiting groove refers to the groove structure arranged in the middle of the positioning wheel and extending along the circumferential direction. Specifically, it can adopt a V-shaped or U-shaped cross-section, and its depth is greater than the embedding depth of the edge of the belt member 125. This structure forms a wrapped constraint on the edge of the belt member 125 and continuously guides the running track of the belt member 125 during transmission, preventing the belt member 125 from generating deviation or dislocation.

[0059] More specifically, taking the conveying path switching mechanism of the packaging bag disclosed in this embodiment for sorting and excluding waste packaging bags as an example, a more detailed description will be given.

[0060] When the conveying path switching mechanism of the packaging bag is used for sorting and excluding waste packaging bags, please refer to Figure 4A camera 140 is also provided upstream of the conveying path switching mechanism, and the image acquisition end of the camera 140 faces the front conveying path and each package bag conveyed through. In this embodiment, a pair of cameras 140 are provided and are arranged at intervals on both sides of the width direction of the conveying path. In order to further improve the image acquisition effect, a light source 150 is also provided. The light source 150 is provided on the frame, and the light source 150 faces the conveying path and each package bag conveyed through. The light source 150 can be a common flash light, incandescent light, LED light, etc.

[0061] Specifically, the camera 140 collects images of each packaging bag. When it is determined to be a qualified packaging bag, the outlet end of the upstream conveyor belt group 100 is connected to the conveying inlet of the qualified product conveying channel, and then enters the packaging bag packaging station. When it is determined to be a waste packaging bag, the outlet end of the upstream conveyor belt group 100 swings to connect with the conveying inlet of the waste conveying channel, so as to carry out waste discharge processing.

[0062] It should be further explained that when the conveying path switching mechanism of the packaging bag is used to sort out and eliminate waste packaging bags, the outlet end of the upstream conveyor belt group 100 and the conveying entrance of the qualified product conveying channel are in a normally open state, and only when a waste packaging bag is detected will it swing to connect with the conveying entrance of the waste conveying channel.

[0063] Another implementation of this embodiment further discloses a conveying path switching mechanism for packaging bags, wherein the upstream conveyor belt group 100 includes an upstream conveyor belt 120 extending along the production path, and a driving mechanism 110. In addition, the upstream end of the upstream conveyor belt 120 close to the upstream station 10 is rotatably arranged on the frame.

[0064] The driving mechanism 110 is arranged at the downstream end of the upstream conveyor belt 120 near the downstream conveyor belt group 130. The driving mechanism 110 includes a driving cylinder arranged on a frame, and a driving rod transmission-connected to the power output end of the driving cylinder. One end of the driving rod away from the driving cylinder is pivotally connected to one end of the upstream conveyor belt 120 near the downstream conveyor belt group 130.

[0065] Specifically, in this embodiment, the driving mechanism 110 is configured as a driving cylinder and a driving rod, eliminating the intermediate transmission components. This design simplifies the equipment structure, making it more straightforward and reducing the mechanical failure rate. When it is detected that the conveying path needs to be switched, the driving cylinder starts and pushes the driving rod to move in a straight line. The end of the driving rod applies a force to the downstream end of the conveyor belt through a pivot connection point, causing the conveyor belt to deflect at an angle around the fixed rotating shaft at the upstream end. As the telescopic stroke of the driving rod changes, the outlet end of the conveyor belt forms a swinging trajectory between the inlets of the two downstream conveying channels 131, thereby guiding the packaging bags to different conveying channels 131. During this swinging process, the pivot connection point effectively avoids motion interference and ensures the continuity of power transmission.

[0066] It should be noted that, in addition to the embodiments of the present invention described in the above specific embodiments, those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Although the description of the present invention is introduced in conjunction with preferred embodiments, this does not mean that the features of this invention are limited to this embodiment. On the contrary, the purpose of introducing the invention in conjunction with the embodiment is to cover other alternatives or modifications that may be extended based on the claims of the present invention. To provide a deep understanding of the present invention, many specific details are included in the above description, and the present invention can also be implemented without these details. In addition, to avoid confusion or obscuring the key points of the present invention, some specific details will be omitted in the description. It should be noted that, without conflict, the embodiments and features in the embodiments of the present invention can be combined with each other.

[0067] It should be noted that in this specification, similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0068] In the description of this embodiment, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "bottom", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of this invention is usually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0069] The terms "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0070] In the description of this embodiment, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in this embodiment can be understood according to specific situations.

[0071] Although the present invention has been illustrated and described by referring to some preferred embodiments of the present invention, those of ordinary skill in the art should understand that the above content is a further detailed description of the present invention in combination with specific embodiments, and it cannot be determined that the specific implementation of the present invention is only limited to these descriptions. Those skilled in the art can make various changes in form and details, including making several simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. A conveying path switching mechanism for packaging bags, wherein the conveying path switching mechanism is arranged between two adjacent workstations on a packaging bag production path; characterized in that: include: An upstream conveyor belt group and a downstream conveyor belt group are sequentially arranged along the production path; in The inlet end of the upstream conveyor belt group is connected to the outlet of the upstream station located on the production path; The downstream conveyor belt group includes two conveying channels arranged side by side along the production path; and The outlet end of the upstream conveyor belt group can swing between the conveying inlets of the two conveying channels of the downstream conveyor belt group to switch the conveying path.

2. The conveying path switching mechanism for packaging bags according to claim 1, characterized in that: in The upstream conveyor belt group includes an upstream conveyor belt extending along the production path and a driving mechanism; and The upstream end of the upstream conveyor belt close to the upstream station is rotatably arranged on the frame; The driving mechanism is arranged at the downstream end of the upstream conveyor belt close to the downstream conveyor belt group, and comprises a driving assembly, a rotating cam and a transmission rod arranged on the frame, wherein the power output end of the driving assembly is in transmission connection with the rotating cam and drives the rotating cam to rotate; in One end of the transmission rod is pivotally connected to a portion of the rotating cam close to the outer periphery, and the other end of the transmission rod is pivotally connected to an end of the upstream conveyor belt close to the downstream conveyor belt group.

3. The conveying path switching mechanism for packaging bags according to claim 2, characterized in that: The driving assembly comprises a driving motor and a transmission belt set fixedly arranged on the frame, the power output end of the driving motor is transmission-connected to the transmission belt set, and the output end of the transmission belt set is transmission-connected to the rotating cam; in The transmission belt assembly comprises a transmission belt, a driving transmission gear and a driven transmission gear, wherein the driving transmission gear is fixedly arranged at the output end of the driving motor, the driven transmission gear is coaxially arranged with the rotating cam, and the transmission belt is sequentially wound around and meshed with the outer circumferences of the driving transmission gear and the driven transmission gear; and The diameter of the driven transmission gear is greater than the diameter of the driving transmission gear.

4. The conveying path switching mechanism for packaging bags according to claim 3, characterized in that: The driving assembly further comprises a rotating cross bar rotatably arranged on the frame, and the driven transmission gear is coaxially arranged on the rotating cross bar with the rotating cam.

5. The conveying path switching mechanism for packaging bags according to claim 4, characterized in that: The rotating cam, the transmission rod, and the transmission belt set are symmetrically arranged on both sides of the upstream conveyor belt in the width direction; and The power output end of the driving motor is simultaneously connected to the transmission belt sets on both sides.

6. The conveying path switching mechanism for packaging bags according to claim 1, characterized in that: in The upstream conveyor belt group includes an upstream conveyor belt extending along the production path and a driving mechanism; and The upstream end of the upstream conveyor belt close to the upstream station is rotatably arranged on the frame; The driving mechanism is arranged at the downstream end of the upstream conveyor belt close to the downstream conveyor belt group. The driving mechanism includes a driving cylinder arranged on the frame, and a driving rod transmission connected to the power output end of the driving cylinder, and one end of the driving rod away from the driving cylinder is pivotally connected to one end of the upstream conveyor belt close to the downstream conveyor belt group.

7. The conveying path switching mechanism for packaging bags according to any one of claims 1 to 6, characterized in that: The upstream conveyor belt comprises two superimposed conveyor belts, which are arranged at intervals along the overlapping direction and form an upstream conveying channel for the packaging bags to move in the middle.

8. The conveying path switching mechanism for packaging bags according to claim 7, characterized in that: Each of the conveyor belts comprises a driving shaft, a driven shaft, a belt member and a shaft connecting plate, wherein the belt member surrounds the outer walls of the driving shaft and the driven shaft in sequence, and the driving shaft and the driven shaft are rotatably disposed at both ends of the shaft connecting plate respectively; and At least one side of the two conveyor belts is also provided with a fixed connecting plate extending along the overlapping direction, and the fixed connecting plate is located at a position of the rotating shaft connecting plate close to the downstream end, and the two ends of the fixed connecting plate are respectively rotatably connected to the two rotating shaft connecting plates on the same side.

9. The conveying path switching mechanism for packaging bags according to claim 8, characterized in that: A conveyor belt positioning wheel is also arranged on the inner side of the rotating shaft connecting plate close to the conveyor belt, and a limiting groove is provided in the middle of each conveyor belt positioning wheel, and the edge of the belt component is located in the limiting groove.

10. The conveying path switching mechanism for packaging bags according to claim 7, characterized in that: in The outlet end of the upstream conveyor belt group swings around a rotation axis parallel to the width direction of the upstream conveyor belt; The upstream station is a packaging bag forming station, and the downstream station is a packaging bag packing station; and The two conveying channels of the downstream conveyor belt group are respectively a packaging conveying channel and a waste conveying channel.

Images