Packaging machine with secondary feeding function and feeding method

Abstract

The invention relates to the technical field of packaging bag feeding, and specifically to a packaging machine with a secondary feeding function and a feeding method. The packaging machine comprises a supporting platform, a bag supplying machine, a bag filling machine, a screw conveyor and a secondary feeding component. The beneficial effects are as follows: by adding a stepping device of a rack and a gear meshing transmission to the existing packaging machine, the stable switching of the bag body on the workstation is realized, and the stable clamping of the bag body is realized by cooperating with the cylinders distributed in a criss-cross manner. At the same time, the purpose of accurate feeding is achieved by utilizing the cooperation of a weighing device and multiple groups of spiral feedings. The secondary feeding component is utilized to re-weigh and detect the bag body after loading, and the insufficient bag body is timely fed with feeding. The equipment has multiple workstations that act simultaneously, and the whole set of actions is divided into each workstation for execution, so as to improve the packaging speed of the equipment and have sufficient time to fill the packaged material, thereby solving the technical problem of low filling accuracy caused by one-time weighing.

Description

Technical Field

[0001] The invention relates to the technical field of packaging bag feeding, in particular to a packaging machine with a secondary feeding function and a feeding method. Background Art

[0002] A packaging machine is a machine device that performs tasks automatically. It can run pre-edited programs or act according to principles specified by artificial intelligence technology. With the continuous development of my country's economy and the rapid advancement of science and technology, packaging machines are widely used in chemical, heavy industry, agriculture, food and other industries.

[0003] At present, packaging bags such as woven bags with inner lining film and kraft paper bags with inner lining film can be filled and sewn by automatic packaging machines. However, in the actual operation process, the bag body can only achieve the switching of workstations, but cannot achieve accurate stepping movement of the bag body. At the same time, the existing filling equipment has low accuracy and it is difficult to carry out high-precision blanking. At the same time, there is a lack of detection devices, which makes it difficult to accurately understand the feed volume after filling and it is impossible to refill the material. Summary of the invention

[0004] The object of the present invention is to provide a packaging machine with a secondary feeding function and a feeding method to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A packaging machine with a secondary feeding function, the packaging machine comprising:

[0007] Support platform;

[0008] The bag feeding machine comprises a frame and a bag loading mechanism, the bag loading mechanism is mounted on the frame, and the bag loading mechanism comprises a rotating motor, a rotating arm assembly and a first bag clamping cylinder, a pair of rotating arm assemblies mounted opposite to each other are rotatably mounted on the rotating motor, and the rotating arm assemblies are each provided with a first bag clamping cylinder for telescopically driving and clamping the bag body;

[0009] A bagging machine, the bagging machine includes a step-feeding mechanism and a bag clamp, the step-feeding mechanism includes a guide rail fixed on a supporting platform, the guide rail is provided with a transversely sliding rack driven by a rotary motor, the lower end of the rack is provided with a pair of small frames fixedly connected, the lower ends of the pair of small frames are fixedly provided with a second lifting cylinder, the upper end of the telescopic end of the second lifting cylinder is vertically installed with a bag opening cylinder, the end of the telescopic end of the bag opening cylinder is provided with a bag opening suction cup, a middle clamping cylinder located at the lower end of the bag opening cylinder is transversely fixedly installed on the small frame, and a clamping block is provided at the end of the middle clamping cylinder;

[0010] The bag clamp is equipped with a barrel, and initial weighing modules are arranged on both sides of the barrel. The lower end of the initial weighing module is connected to a pair of bag clamping plates driven by a second bag clamping cylinder;

[0011] A screw conveyor, the screw conveyor is installed just above the bag clamp, a pair of small screws and a large screw parallel to each other are arranged in the screw conveyor, the small screw and the large screw are located in the barrel, and the small screw and the large screw are driven by a pair of independent motors;

[0012] A secondary feeding component, the secondary feeding component includes a secondary weighing mechanism and a cone tank screw machine, the secondary weighing mechanism includes a clamping claw cylinder for clamping the bag body and a first lifting cylinder for driving the bag body to rise, and the first lifting cylinder is fixedly installed on the secondary weighing module;

[0013] The conical tank screw machine is fixedly arranged on the upper end of the secondary weighing mechanism through a placing frame, and the conical tank screw machine comprises a tank body for storing materials and a feeding screw driven by a rotary servo motor.

[0014] Preferably, the frame is located in the supporting platform, a mounting plate is provided on one side of the bag loading mechanism, the mounting plate is fixed on the frame, a rotating shaft rotatably installed through a bearing is provided on the mounting plate, one end of the rotating shaft is connected to a rotating motor, the rotating arm assembly includes a first rotating arm and a second rotating arm, the second rotating arm nut is fixedly sleeved on the adjusting rod, one end of the first rotating arm is sleeved on the adjusting rod, and the other end of the first rotating arm is spirally sleeved on the rotating shaft.

[0015] Preferably, the end fixing bolt of the second rotating arm is connected with the second clamping plate, the inner side of the second clamping plate is provided with the first clamping plate, the second rotating arm is provided with a slide groove, the slide groove is vertically provided with an oblong positioning groove, the first clamping plate is slidably inserted into the slide groove, the first clamping plate is provided with a positioning slide column inserted along the positioning groove, the first clamping plate extends to the outer wall outside the slide groove and is connected to the telescopic end of the first bag clamping cylinder.

[0016] Preferably, the bagging machine includes a transition clamping mechanism, which includes a mounting plate, a clamping cylinder, and a clamping plate. The mounting plate is fixed to the supporting platform by bolts, the clamping cylinder is fixed to the mounting plate by bolts, and the clamping plate is fixed to the telescopic end of the clamping cylinder by bolts.

[0017] Preferably, a pair of mounting frames fixedly connected to the supporting platform are provided at both ends of the guide rail, a pair of third belt seat bearings symmetrically distributed on the left and right are provided on the guide rail, a transverse rotating shaft is rotatably installed between adjacent pairs of third belt seat bearings, a second synchronous wheel is fixedly sleeved on the front end of the transverse rotating shaft, a gear meshing with the rack is fixedly sleeved on the transverse rotating shaft, a first synchronous wheel driven by a rotating motor located directly above the second synchronous wheel is provided on the supporting platform, and the first synchronous wheel and the second synchronous wheel are connected by a synchronous belt transmission.

[0018] Preferably, the lower end of the rack is bolted and fixedly connected with a pair of seat plates, and the lower end of the seat plate is rotatably installed with guide wheels that are limitedly clamped on both sides of the guide rail. The second lifting cylinder is fixedly installed with a bag opening mounting seat, and the bag opening cylinder is fixed to the bag opening mounting seat by a nut. The second lifting cylinder is fixed to the lifting mounting frame by bolts, and the lifting mounting frame is fixed to the small frame by bolts. A middle clamping cylinder mounting seat is penetrated and sleeved on the middle clamping cylinder, and the middle clamping cylinder mounting seat is fixed to the small frame by the middle mounting seat bolts.

[0019] Preferably, the bag clamp is provided with a fixing plate, which is fixed to the supporting platform by bolts, the initial weighing module is fixed to the fixing plate by bolts, the barrel is fixed to the initial weighing module by bolts, the second bag clamping cylinder is fixed to the barrel by bolts, and the bag clamping plate is fixed to the second bag clamping cylinder by bolts.

[0020] Preferably, the secondary weighing mechanism is provided with a connecting frame, a connecting plate and a hanging plate, the connecting frame is fixed to the supporting platform by bolts, the secondary weighing module is fixed to the connecting frame by bolts, the hanging plate is fixed to the secondary weighing module by bolts, the first lifting cylinder is fixed to the hanging plate by bolts, the connecting plate is fixed to the first lifting cylinder by nuts, the clamping cylinder is fixed to the connecting plate by bolts, and the third clamping plate is fixed to the clamping cylinder by nuts.

[0021] Preferably, the screw conveyor includes a small screw motor for driving the small screw and a large screw motor for driving the large screw, the large screw motor and the small screw motor are both fixed to the casing of the screw conveyor through a support plate, and a sprocket group is sleeved on the output shafts of the large screw motor and the small screw motor, and the sprocket group is composed of a first sprocket, a second sprocket and a chain that are meshed with each other, a spiral cylinder is provided in the screw conveyor, and a pair of first belt seat bearings and a second belt seat bearing are provided in the spiral cylinder, the end shafts of the small screw and the large screw are rotatably installed in the first belt seat bearing and the second belt seat bearing respectively, the end shafts of the small screw and the large screw are sleeved with a second sprocket, the large screw motor and the small screw motor are sleeved with a first sprocket, and the first sprocket and the second sprocket are connected by a chain transmission.

[0022] A feeding method for the packaging machine with a secondary feeding function, the feeding method comprises the following steps:

[0023] The bag is rotated, and the rotation of the rotary motor in the bag loading mechanism causes the first bag clamping cylinder to rotate to the bag body of the bag feeding machine, and the material is taken by the clamping of the cylinder, and then the bag body is clamped to the transition clamping mechanism by resetting, and the bag body is temporarily clamped by the clamping cylinder of the transition clamping mechanism to wait for the material;

[0024] Switch feeding, drive the bag opening cylinder to move to the transition clamping mechanism through the step-feeding mechanism, use the bag opening cylinder to drive the bag opening suction cup to clamp the bag body to achieve the purpose of taking the bag, then use the bag opening suction cup to hold the bag body, use the return stroke of the bag opening cylinder to open the bag body, and move to the lower end of the bag clamp under the drive of the step-feeding mechanism to perform the initial drop, and use the initial weighing module for initial weighing;

[0025] For secondary refilling, the bag after loading is driven by the step-feeding mechanism to be transported to the lower end of the secondary weighing mechanism for secondary weighing. During the weighing process, the error is detected and the cone tank screw machine is used for secondary refilling.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] The present invention adds a stepping device with meshing transmission of rack and gear to the existing packaging machine, thereby realizing stable switching of the bag body on the work station, and cooperates with the cylinders distributed in a criss-cross manner to realize stable clamping of the bag body, and simultaneously utilizes the cooperation of the weighing device and multiple groups of spiral feeds to achieve the purpose of accurate feeding, and utilizes the secondary feeding component to realize re-weighing and testing of the bag body after feeding, and timely replenishment of insufficient bag body. The equipment has multiple work stations acting simultaneously, and the whole set of actions is divided into each work station to improve the packaging speed of the equipment and have sufficient time to fill the packaged material, thereby solving the technical problem of low filling accuracy caused by one-time weighing. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is the overall structural front view of the present invention;

[0029] Figure 2 It is a left side view of the overall structure of the present invention;

[0030] Figure 3 It is a left side view of the bag supply machine of the present invention;

[0031] Figure 4 It is a front view of the bag loading mechanism of the present invention;

[0032] Figure 5 is a top view of the bag loading mechanism of the present invention;

[0033] Figure 6 is a front view of the transition clamping mechanism of the present invention;

[0034] Figure 7 It is a front view of the bag clamp of the present invention;

[0035] Figure 8 It is a left side view of the bag clamp of the present invention;

[0036] Fig. 9 is a front view of the step-feeding mechanism of the present invention;

[0037] Fig.10 It is a left side view of the step-feeding mechanism of the present invention;

[0038] Fig.11 is a front view of the secondary weighing mechanism of the present invention;

[0039] Fig.12 It is a left side view of the secondary weighing mechanism of the present invention;

[0040] Fig.13 is a front view of the screw conveyor of the present invention;

[0041] Fig.14 It is a front view of the conical tank screw machine of the present invention;

[0042] Fig.15 It is an enlarged view of the clamping part structure of the step-feeding mechanism of the present invention;

[0043] Fig.16 It is an enlarged view of the clamping part of the upper bag structure of the present invention.

[0044] In the figure: 1. bag feeding machine; 1-1. frame; 1-2. bag feeding mechanism; 1-2-1. mounting plate; 1-2-2. rotating motor; 1-2-3. bearing; 1-2-4. rotating shaft; 1-2-5. first rotating arm; 1-2-6. adjusting rod; 1-2-7. second rotating arm; 1-2-8. first bag clamping cylinder; 1-2-9. first clamping plate; 1-2-10. positioning slide column; 1-2-11. second clamping plate; 1-2-12. positioning groove; 2. bagging machine; 2-1. transition clamping mechanism; 2-1-1. mounting plate; 2-1-2. clamping cylinder; 2-1-3, clamping plate; 2-2, bag clamp; 2-2-1, fixing plate; 2-2-2, initial weighing module; 2-2-3, barrel; 2-2-4, second bag clamping cylinder; 2-2-5, bag clamping plate; 2-3, stepping mechanism; 2-3-1, mounting frame; 2-3-2, guide rail; 2-3-3, third seat bearing; 2-3-4, gear; 2-3-5, rack; 2-3-6, horizontal shaft; 2-3-7, rotating motor; 2-3-8, first synchronous wheel; 2-3-9, synchronous belt; 2-3-10, second synchronous wheel; 2-3-11 , seat plate; 2-3-12, guide wheel; 2-3-13, small frame; 2-3-14, bag opening mounting seat; 2-3-15, bag opening cylinder; 2-3-16, lifting mounting frame; 2-3-17, bag opening suction cup; 2-3-18, second lifting cylinder; 2-3-19, clamping block; 2-3-20, middle clamping cylinder mounting seat; 2-3-21, middle clamping cylinder; 2-3-22, middle mounting seat; 2-4, secondary weighing mechanism; 2-4-1, connecting frame; 2-4-2, first lifting cylinder; 2-4-3, secondary weighing module; 2-4-4, Hanging plate; 2-4-5, connecting plate; 2-4-6, clamping claw cylinder; 2-4-7, third clamping plate; 3, screw conveyor; 3-1, small screw motor; 3-2, first sprocket; 3-3, chain; 3-4, second sprocket; 3-5, small screw; 3-6, large screw; 3-7, large screw motor; 3-8, first seat bearing; 3-9, second seat bearing; 3-10, screw cylinder; 3-11, support plate; 4, cone tank screw machine; 4-1, rotating servo motor; 4-2, tank body; 4-3, placement rack; 4-4, feeding screw; 5, support platform. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] See also Figures 1 to 16, the present invention provides a technical solution:

[0047] A packaging machine with a secondary feeding function comprises a supporting platform 5, a bag supplying machine 1, a bag filling machine 2, a screw conveyor 3 and a secondary feeding component.

[0048] like Figure 3 , 4 As shown in Figures 5 and 16, the bag feeding machine 1 includes a frame 1-1 and a bag loading mechanism 1-2. The bag loading mechanism 1-2 is installed on the frame 1-1, and the bag loading mechanism 1-2 includes a rotating motor 1-2-2, a rotating arm assembly and a first bag clamping cylinder 1-2-8. A pair of relatively mounted rotating arm assemblies are rotatably mounted on the rotating motor 1-2-2, and the rotating arm assemblies are each provided with a first bag clamping cylinder 1-2-8 for telescopically driving and clamping the bag body.

[0049] The frame 1-1 is located in the support platform 5, and a mounting plate 1-2-1 is provided on one side of the bag loading mechanism 1-2. The mounting plate 1-2-1 is fixed on the frame 1-1, and a rotating shaft 1-2-4 rotatably mounted through a bearing 1-2-3 is provided on the mounting plate 1-2-1. One end of the rotating shaft 1-2-4 is connected to the rotating motor 1-2-2. The rotating arm assembly includes a first rotating arm 1-2-5 and a second rotating arm 1-2-7. The nut of the second rotating arm 1-2-7 is fixedly sleeved on the adjusting rod 1-2-6. One end of the first rotating arm 1-2-5 is sleeved on the adjusting rod 1-2-6, and the other end of the first rotating arm 1-2-5 is spirally sleeved. On the rotating shaft 1-2-4, the end fixing bolt of the second rotating arm 1-2-7 is connected with the second clamping plate 1-2-11, the inner side of the second clamping plate 1-2-11 is provided with the first clamping plate 1-2-9, the second rotating arm 1-2-7 is provided with a slide groove, the slide groove is vertically provided with an oblong positioning groove 1-2-12, the first clamping plate 1-2-9 is slidably inserted in the slide groove, the first clamping plate 1-2-9 is provided with a positioning slide column 1-2-10 inserted along the positioning groove 1-2-12, the first clamping plate 1-2-9 extends to the outer wall outside the slide groove and is connected to the telescopic end of the first bag clamping cylinder 1-2-8.

[0050] The packaging bag is in the frame 1-1, and the rotating motor 1-2-2 rotates to drive the rotating shaft 1-2-4 to move. The rotating shaft 1-2-4 drives the first rotating arm 1-2-5, the adjusting rod 1-2-6, and the second rotating arm 1-2-7 to rotate. When it rotates to the packaging bag, the first bag clamping cylinder 1-2-8 extends out and drives the first clamping plate 1-2-9 to move toward the second clamping plate 1-2-11. At this time, the first clamping plate 1-2-9 slides along the slide groove, and the positioning groove 1-2-1 cooperates with the positioning slide column 1-2-10 to maintain the sliding position accuracy. The first clamping plate 1-2-9 and the second clamping plate 1-2-11 clamp the packaging bag, and then the rotating motor 1-2-2 rotates the packaging bag to lift it and rotate it to a fixed position to wait for the next action.

[0051] like Figure 6 As shown, the bagging machine 2 includes a transition clamping mechanism 2-1, which includes a mounting plate 2-1-1, a clamping cylinder 2-1-2, and a clamping plate 2-1-3. The mounting plate 2-1-1 is fixed to the supporting platform 5 by bolts, the clamping cylinder 2-1-2 is fixed to the mounting plate 2-1-1 by bolts, and the clamping plate 2-1-3 is fixed to the telescopic end of the clamping cylinder 2-1-2 by bolts.

[0052] When the packaging bag reaches this position, the clamping cylinder 2-1-2 closes and drives the clamping plate 2-1-3 to move, and finally clamps the bag. At this time, the first bag clamping cylinder 1-2-8 retracts and drives the first clamping plate 1-2-9 and the second clamping plate 1-2-11 to move to loosen the packaging bag. Then the rotating motor 1-2-2 rotates to take out a packaging bag. At this time, the clamping plate 2-1-3 clamps the packaging bag and waits for the next action.

[0053] like Fig. 9 , 10 As shown, the bagging machine 2 includes a step-feeding mechanism 2-3 and a bag clamp 2-2, the step-feeding mechanism 2-3 includes a guide rail 2-3-2 fixed on the supporting platform 5, a rack 2-3-5 for transverse sliding driven by a rotating motor 2-3-7 is arranged on the guide rail 2-3-2, a pair of small frames 2-3-13 are fixedly connected to the lower end of the rack 2-3-5, a second lifting cylinder 2-3-18 is fixedly arranged at the lower end of the small frames 2-3-13, a bag opening cylinder 2-3-15 is vertically installed on the upper end of the telescopic end of the second lifting cylinder 2-3-18, a bag opening suction cup 2-3-17 is arranged at the end of the telescopic end of the bag opening cylinder 2-3-15, a middle clamping cylinder 2-3-21 located at the lower end of the bag opening cylinder 2-3-15 is fixedly installed on the small frame 2-3-13, and a clamping block 2-3-19 is arranged at the end of the middle clamping cylinder 2-3-21.

[0054] The switching of the workstations is achieved by rotating the motor 2-3-7 to drive the rack 2-3-5 to slide. When the bag opening suction cup 2-3-17 moves to the transition clamping mechanism 2-1, the bag opening cylinder 2-3-15 extends out to drive the bag opening suction cup 2-3-17 to move and suck the packaging bag. After sucking, the clamping cylinder 2-1-2 retracts to drive the clamping plate 2-1-3 to open, and then the bag opening cylinder 2-3-15 retracts to drive the bag opening suction cup 2-3-17 to open the packaging bag. Then the rotating motor 2-3-7 rotates to drive the entire body to move to the bottom of the bag clamp 2-2. Then the second lifting cylinder 2-3-18 extends out to drive the bag opening cylinder 2-3-15 and the bag opening suction cup 2-3-17 to move together to transport the packaging bag to the bag clamp 2-2 to wait for the next movement.

[0055] like Figure 7 , 8As shown, a barrel 2-2-3 is installed on the bag clamp 2-2, initial weighing modules 2-2-2 are arranged on both sides of the barrel 2-2-3, and a pair of bag clamping plates 2-2-5 driven by a second bag clamping cylinder 2-2-4 are connected to the lower end of the initial weighing module 2-2-2.

[0056] When the bag reaches the bag clamp 2-2, the second bag clamping cylinder 2-2-4 closes, driving the bag clamping plate 2-2-5 to close and then clamp the packaging bag on the barrel 2-2-3. At this time, the bag opening suction cup 2-3-17 retracts and the second lifting cylinder 2-3-18 retracts, thereby driving the bag opening suction cup 2-3-17 back to the initial position and waiting for the next step.

[0057] like Fig.13 As shown, the screw conveyor 3 is installed just above the bag clamp 2-2. A pair of small screws 3-5 and a large screw 3-6 are arranged in parallel in the screw conveyor 3. The small screw 3-5 and the large screw 3-6 are located in the barrel 2-2-3. The small screw 3-5 and the large screw 3-6 are driven by a pair of independent motors. The screw conveyor 3 includes a small screw motor 3-1 driving the small screw 3-5 and a large screw motor 3-7 driving the large screw 3-6. The large screw motor 3-7 and the small screw motor 3-1 are fixed to the housing of the screw conveyor 3 through a support plate 3-11. Chains are sleeved on the output shafts of the large screw motor 3-7 and the small screw motor 3-1. The wheel group and the sprocket group are composed of a first sprocket 3-2, a second sprocket 3-4 and a chain 3-3 which are meshed with each other. A spiral cylinder 3-10 is arranged in the screw conveyor 3. A pair of first bearings 3-8 and second bearings 3-9 are arranged in the spiral cylinder 3-10. The end shafts of the small spiral 3-5 and the large spiral 3-6 are rotatably mounted in the first bearings 3-8 and the second bearings 3-9. The end shafts of the small spiral 3-5 and the large spiral 3-6 are respectively rotatably mounted in the first bearings 3-8 and the second bearings 3-9. The second sprocket 3-4 is sleeved on the end shafts of the small spiral 3-5 and the large spiral 3-6. The first sprocket 3-2 is sleeved on the large spiral motor 3-7 and the small spiral motor 3-1. The first sprocket 3-2 and the second sprocket 3-4 are connected through the chain 3-3 transmission.

[0058] When the bag is fixed at the bag clamp 2-2, the material in the spiral cylinder 3-10 will be transported out and dropped into the bag through the transmission of the sprocket group when the large spiral 3-6 and the small spiral 3-5 rotate. At this time, the initial weighing module 2-2-2 in the bag clamp 2-2 will set two certain values ​​in advance. When one of the values ​​is reached, the large spiral 3-6 stops rotating, and when the other value is reached, the small spiral 3-5 stops rotating. When the screw conveyor 3 is in the process of feeding, the motor 2-3-7 rotates to rotate the clamping block 2-3-19 and the middle clamping air The cylinder mounting seat 2-3-20, the middle clamping cylinder 2-3-21 and the middle mounting seat 2-3-22 move to the bag clamp 2-2. When the initial weighing module 2-2-2 reaches the initial set value, the second bag clamping cylinder 2-2-4 opens, driving the bag clamping plate 2-2-5 to open and then loosen the packaging bag. While loosening the packaging bag, the middle clamping cylinder 2-3-21 extends out and drives the clamping block 2-3-19 to move and clamp the packaged packaging bag. Then the rotating motor 2-3-7 drives the packaged packaging bag to move to the secondary weighing mechanism 2-4 to wait for the next step of movement.

[0059] like Fig.11 , 12 As shown, the secondary feeding assembly includes a secondary weighing mechanism 2-4 and a cone tank screw machine 4. The secondary weighing mechanism 2-4 includes a clamping claw cylinder 2-4-6 for clamping the bag body and a first lifting cylinder 2-4-2 for driving the bag body to rise. The first lifting cylinder 2-4-2 is fixedly installed on the secondary weighing module 2-4-3. The secondary weighing mechanism 2-4 is provided with a connecting frame 2-4-1, a connecting plate 2-4-5 and a hanging plate 2-4-4. The connecting frame 2-4-1 is fixed to the supporting platform 5 by bolts. The secondary weighing module 2-4-3 is fixed to the connecting frame 2-4-1 by bolts, the hanging plate 2-4-4 is fixed to the secondary weighing module 2-4-3 by bolts, the first lifting cylinder 2-4-2 is fixed to the hanging plate 2-4-4 by bolts, the connecting plate 2-4-5 is fixed to the first lifting cylinder 2-4-2 by nuts, the clamping cylinder 2-4-6 is fixed to the connecting plate 2-4-5 by bolts, and the third clamping plate 2-4-7 is fixed to the clamping cylinder 2-4-6 by nuts.

[0060] When the packaging bag reaches the specified position, the clamping cylinder 2-4-6 extends to drive the third clamping plate 2-4-7 to move and clamp the packaging bag. Then the middle clamping cylinder 2-3-21 retracts to drive the clamping block 2-3-19 to retract and release the packaging bag. Then the motor 2-3-7 rotates to start the next cycle. At this time, the first lifting cylinder 2-4-2 retracts to drive the clamping cylinder 2-4-6, the third clamping plate 2-4-7 and the packaging bag to rise together. At this time, the secondary weighing module 2-4-3 will display a certain value and a preset value, waiting for the next action.

[0061] like Fig.14As shown, the conical tank screw machine 4 is fixedly arranged on the upper end of the secondary weighing mechanism 2-4 through a placement frame 4-3, and the conical tank screw machine 4 includes a tank body 4-2 for storing materials and a feeding screw 4-4 driven by a rotary servo motor 4-1.

[0062] When the packaging bag at the secondary weighing mechanism 2-4 is ready, the cone tank screw machine allows feeding according to the certain value and preset value displayed by the secondary weighing module 2-4-3, and the rotating servo motor 4-1 drives the feeding screw 4-4 to rotate. As the feeding screw 4-4 rotates, the material in the tank body 4-2 is discharged into the packaging bag. When the preset value of the secondary weighing module 2-4-3 is reached, the rotating servo motor 4-1 stops rotating and stops feeding, and then the first lifting cylinder 2-4-2 extends to drive the packaging bag to fall, and then the middle clamping cylinder 2-3-21 extends to drive the clamping block 2-3-19 to extend and clamp the dropped packaging bag. At this time, the clamping claw cylinder 2-4-6 retracts to drive the third clamping plate 2-4-7 to release the packaging bag. The rotating motor 2-3-7 rotates to drive the middle clamping cylinder 2-3-21 and the clamping block 2-3-19 to move together and finally transport the packaging bag out.

[0063] Embodiment 2:

[0064] On the basis of Example 1, a pair of mounting frames 2-3-1 fixedly connected to the support platform 5 are provided at both ends of the guide rail 2-3-2, a pair of third belt seat bearings 2-3-3 symmetrically distributed on the left and right are provided on the guide rail 2-3-2, a transverse rotating shaft 2-3-6 is rotatably installed between adjacent pairs of third belt seat bearings 2-3-3, a second synchronous wheel 2-3-10 is fixedly sleeved on the front end of the transverse rotating shaft 2-3-6, a gear 2-3-4 meshingly connected to the rack 2-3-5 is fixedly sleeved on the transverse rotating shaft 2-3-6, a first synchronous wheel 2-3-8 driven by a rotating motor 2-3-7 located just above the second synchronous wheel 2-3-10 is provided on the support platform 5, and the first synchronous wheel 2-3-8 and the second synchronous wheel 2-3-10 are connected through a synchronous belt 2-3-9.

[0065] The rotation of the rotating motor 2-3-7 drives the first synchronous wheel 2-3-8 to rotate, and the rotation of the first synchronous wheel 2-3-8 drives the synchronous belt 2-3-9 and the second synchronous wheel 2-3-10 to rotate. The second synchronous wheel 2-3-10 further drives the transverse shaft 2-3-6 to rotate, and the rotation of the transverse shaft 2-3-6 drives the gear 2-3-4 to rotate, and the engagement of the gear 2-3-4 and the rack 2-3-5 drives the small frame 2-3-13 to move together.

[0066] Embodiment 3:

[0067] On the basis of Example 1, Fig.15As shown, the lower end of the rack 2-3-5 is bolted and fixedly connected with a pair of seat plates 2-3-11, the lower end of the seat plate 2-3-11 is rotatably installed with guide wheels 2-3-12 which are limitedly clamped on both sides of the guide rail 2-3-2, the second lifting cylinder 2-3-18 is fixedly installed with a bag opening mounting seat 2-3-14, the bag opening cylinder 2-3-15 is fixed to the bag opening mounting seat 2-3-14 by a nut, the second lifting cylinder 2-3-18 is fixed to the lifting mounting frame 2-3-16 by bolts, the lifting mounting frame 2-3-16 is fixed to the small frame 2-3-13 by bolts, the middle clamping cylinder 2-3-21 is penetrated and sleeved with a middle clamping cylinder mounting seat 2-3-20, and the middle clamping cylinder mounting seat 2-3-20 is bolted to the small frame 2-3-13 by the middle mounting seat 2-3-22.

[0068] The installation of the cylinder in the clamping device is achieved through the lifting mounting frame 2-3-16, the middle mounting seat 2-3-22, the bag opening mounting seat 2-3-14 and the middle clamping cylinder mounting seat 2-3-20.

[0069] Embodiment 4:

[0070] On the basis of Example 1, a fixing plate 2-2-1 is provided on the bag clamp 2-2, and the fixing plate 2-2-1 is fixed to the supporting platform 5 by bolts, the initial weighing module 2-2-2 is fixed to the fixing plate 2-2-1 by bolts, the barrel 2-2-3 is fixed to the initial weighing module 2-2-2 by bolts, the second bag clamping cylinder 2-2-4 is fixed to the barrel 2-2-3 by bolts, and the bag clamping plate 2-2-5 is fixed to the second bag clamping cylinder 2-2-4 by bolts.

[0071] A feeding method for the packaging machine with a secondary feeding function, the feeding method comprises the following steps:

[0072] The bag is rotated, and the rotating motor 1-2-2 in the bag loading mechanism 1-2 is rotated to make the first bag clamping cylinder 1-2-8 rotate to the bag body of the bag feeding machine 1, and the material is taken by the clamping of the cylinder, and then the bag body is clamped to the transition clamping mechanism 2-1 by resetting, and the bag body is temporarily clamped by the clamping cylinder 2-1-2 of the transition clamping mechanism 2-1 to wait for the material;

[0073] Switch feeding, drive the bag opening cylinder 2-3-15 to move to the transition clamping mechanism 2-1 through the step-feeding mechanism 2-3, and use the bag opening cylinder 2-3-15 to drive the bag opening suction cup 2-3-17 to clamp the bag body to achieve the purpose of taking the bag, and then use the bag opening suction cup 2-3-17 to hold the bag body, and use the return stroke of the bag opening cylinder 2-3-15 to open the bag body, and move to the lower end of the bag clamp 2-2 under the drive of the step-feeding mechanism 2-3 to perform the initial dropping, and use the initial weighing module 2-2-2 for initial weighing;

[0074] The secondary feeding is carried out by driving the bag body after loading to the lower end of the secondary weighing mechanism 2-4 through the step-feeding mechanism 2-3 for secondary weighing. During the weighing process, the cone tank screw machine 4 is used to carry out secondary feeding through the detected error.

[0075] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A packaging machine with a secondary feeding function, characterized in that: The packaging machine comprises: Support platform (5); A bag feeding machine (1), the bag feeding machine (1) comprising a frame (1-1) and a bag loading mechanism (1-2), the bag loading mechanism (1-2) being mounted on the frame (1-1), and the bag loading mechanism (1-2) comprising a rotating motor (1-2-2), a rotating arm assembly and a first bag clamping cylinder (1-2-8), a pair of rotating arm assemblies being rotatably mounted on the rotating motor (1-2-2) and being relatively mounted, and the rotating arm assemblies are each provided with a first bag clamping cylinder (1-2-8) for telescopically driving and clamping a bag body; A bagging machine (2), the bagging machine (2) comprising a step-feeding mechanism (2-3) and a bag clamp (2-2), the step-feeding mechanism (2-3) comprising a guide rail (2-3-2) fixed on a support platform (5), the guide rail (2-3-2) being provided with a transversely sliding rack (2-3-5) driven by a rotating motor (2-3-7), the lower end of the rack (2-3-5) being provided with a pair of small frames (2-3-13) fixedly connected thereto, the lower ends of the pair of small frames (2-3-13) being fixedly provided A second lifting cylinder (2-3-18) is provided, a bag opening cylinder (2-3-15) is vertically mounted on the upper end of the telescopic end of the second lifting cylinder (2-3-18), a bag opening suction cup (2-3-17) is provided at the end of the telescopic end of the bag opening cylinder (2-3-15), a middle clamping cylinder (2-3-21) located at the lower end of the bag opening cylinder (2-3-15) is fixedly mounted laterally on the small frame (2-3-13), and a clamping block (2-3-19) is provided at the end of the middle clamping cylinder (2-3-21); A barrel (2-2-3) is installed on the bag clamp (2-2), initial weighing modules (2-2-2) are arranged on both sides of the barrel (2-2-3), and the lower end of the initial weighing module (2-2-2) is connected to a pair of bag clamping plates (2-2-5) driven by a second bag clamping cylinder (2-2-4); A screw conveyor (3), the screw conveyor (3) being installed directly above the bag clamp (2-2), the screw conveyor (3) being provided with a pair of small screws (3-5) and a large screw (3-6) which are parallel to each other, the small screws (3-5) and the large screws (3-6) being located in the barrel (2-2-3), and the small screws (3-5) and the large screws (3-6) being driven by a pair of independent motors; A secondary feeding component, the secondary feeding component comprising a secondary weighing mechanism (2-4) and a cone tank screw machine (4), the secondary weighing mechanism (2-4) comprising a clamping claw cylinder (2-4-6) for clamping the bag body and a first lifting cylinder (2-4-2) for driving the bag body to rise, the first lifting cylinder (2-4-2) being fixedly mounted on the secondary weighing module (2-4-3); The conical tank screw machine (4) is fixedly arranged on the upper end of the secondary weighing mechanism (2-4) via a placement frame (4-3), and the conical tank screw machine (4) comprises a tank body (4-2) for storing materials and a feeding screw (4-4) driven by a rotary servo motor (4-1); The secondary weighing mechanism (2-4) is provided with a connecting frame (2-4-1), a connecting plate (2-4-5) and a hanging plate (2-4-4); the connecting frame (2-4-1) is fixed to the supporting platform (5) by bolts; the secondary weighing module (2-4-3) is fixed to the connecting frame (2-4-1) by bolts; the hanging plate (2-4-4) is fixed to the secondary weighing module (2-4-3) by bolts; the first lifting cylinder (2-4-2) is fixed to the hanging plate (2-4-4) by bolts. The connecting plate (2-4-5) is fixed to the first lifting cylinder (2-4-2) by a nut, the clamping cylinder (2-4-6) is fixed to the connecting plate (2-4-5) by a bolt, and the third clamping plate (2-4-7) is fixed to the clamping cylinder (2-4-6) by a nut. The screw conveyor (3) includes a small screw motor (3-1) driving the small screw (3-5) and a large screw motor (3-7) driving the large screw (3-6). The large screw motor (3-7) and the small screw motor The motors (3-1) are fixed to the housing of the screw conveyor (3) through a support plate (3-11); a sprocket group is sleeved on the output shafts of the large screw motor (3-7) and the small screw motor (3-1); the sprocket group is composed of a first sprocket (3-2), a second sprocket (3-4) and a chain (3-3) that are meshed with each other; a screw cylinder (3-10) is provided in the screw conveyor (3); a pair of first seat bearings (3-8) and a second seat bearing are provided in the screw cylinder (3-10); The small spiral (3-5) and the large spiral (3-6) are rotatably mounted on the first seat bearing (3-8) and the second seat bearing (3-9) respectively. The second sprocket (3-4) is sleeved on the end shafts of the small spiral (3-5) and the large spiral (3-6). The first sprocket (3-2) is sleeved on the large spiral motor (3-7) and the small spiral motor (3-1). The first sprocket (3-2) and the second sprocket (3-4) are connected to each other by a chain (3-3).

2. The packaging machine with secondary feeding function according to claim 1, characterized in that: The frame (1-1) is located in the support platform (5); a mounting plate (1-2-1) is provided on one side of the bag loading mechanism (1-2); the mounting plate (1-2-1) is fixed on the frame (1-1); a rotating shaft (1-2-4) rotatably mounted via a bearing (1-2-3) is provided on the mounting plate (1-2-1); one end of the rotating shaft (1-2-4) is connected to a rotating motor (1-2-2); the rotating arm assembly comprises a first rotating arm (1-2-5) and a second rotating arm (1-2-7); a nut of the second rotating arm (1-2-7) is fixedly sleeved on an adjusting rod (1-2-6); one end of the first rotating arm (1-2-5) is sleeved on the adjusting rod (1-2-6); and the other end of the first rotating arm (1-2-5) is spirally sleeved on the rotating shaft (1-2-4).

3. The packaging machine with secondary feeding function according to claim 2, characterized in that: The second clamping plate (1-2-11) is connected to the end of the second rotating arm (1-2-7) by a fixing bolt, and the first clamping plate (1-2-9) is arranged on the inner side of the second clamping plate (1-2-11). The second rotating arm (1-2-7) is provided with a sliding groove, and an oblong positioning groove (1-2-12) is vertically provided on the sliding groove. The first clamping plate (1-2-9) is slidably inserted into the sliding groove, and a positioning sliding column (1-2-10) is arranged on the first clamping plate (1-2-9) and is inserted along the positioning groove (1-2-12). The first clamping plate (1-2-9) extends to the outer wall outside the sliding groove and is connected to the telescopic end of the first bag clamping cylinder (1-2-8).

4. The packaging machine with secondary feeding function according to claim 3 is characterized in that: The bagging machine (2) comprises a transition clamping mechanism (2-1), the transition clamping mechanism (2-1) comprising a mounting plate (2-1-1), a clamping cylinder (2-1-2), and a clamping plate (2-1-3), the mounting plate (2-1-1) being fixed to a support platform (5) by means of bolts, the clamping cylinder (2-1-2) being fixed to the mounting plate (2-1-1) by means of bolts, and the clamping plate (2-1-3) being fixed to a telescopic end of the clamping cylinder (2-1-2) by means of bolts.

5. The packaging machine with secondary feeding function according to claim 4 is characterized in that: A pair of mounting frames (2-3-1) fixedly connected to the support platform (5) are provided at both ends of the guide rail (2-3-2); a pair of third seat bearings (2-3-3) symmetrically distributed on the left and right are provided on the guide rail (2-3-2); a transverse rotating shaft (2-3-6) is rotatably installed between adjacent pairs of third seat bearings (2-3-3); a second synchronous wheel (2-3-10) is fixedly sleeved at the front end of the transverse rotating shaft (2-3-6); a gear (2-3-4) meshingly connected to the rack (2-3-5) is fixedly sleeved on the transverse rotating shaft (2-3-6); a first synchronous wheel (2-3-8) driven by a rotating motor (2-3-7) located directly above the second synchronous wheel (2-3-10) is provided on the support platform (5); the first synchronous wheel (2-3-8) and the second synchronous wheel (2-3-10) are connected by a synchronous belt (2-3-9).

6. The packaging machine with secondary feeding function according to claim 5, characterized in that: The lower end of the rack (2-3-5) is bolted and fixedly connected to a pair of seat plates (2-3-11); the lower end of the seat plate (2-3-11) is rotatably mounted with guide wheels (2-3-12) that are limitedly clamped on both sides of the guide rail (2-3-2); a bag opening mounting seat (2-3-14) is fixedly mounted on the second lifting cylinder (2-3-18); the bag opening cylinder (2-3-15) is fixed on the bag opening mounting seat (2-3-14) by a nut; The second lifting cylinder (2-3-18) is fixed to the lifting mounting frame (2-3-16) by bolts, the lifting mounting frame (2-3-16) is fixed to the small frame (2-3-13) by bolts, the middle clamping cylinder (2-3-21) is sleeved with a middle clamping cylinder mounting seat (2-3-20), and the middle clamping cylinder mounting seat (2-3-20) is fixed to the small frame (2-3-13) by bolts through the middle mounting seat (2-3-22).

7. The packaging machine with secondary feeding function according to claim 6, characterized in that: The bag clamp (2-2) is provided with a fixing plate (2-2-1), the fixing plate (2-2-1) is fixed to the supporting platform (5) by bolts, the initial weighing module (2-2-2) is fixed to the fixing plate (2-2-1) by bolts, the barrel (2-2-3) is fixed to the initial weighing module (2-2-2) by bolts, the second bag clamping cylinder (2-2-4) is fixed to the barrel (2-2-3) by bolts, and the bag clamping plate (2-2-5) is fixed to the second bag clamping cylinder (2-2-4) by bolts.

8. A feeding method for a packaging machine with a secondary feeding function according to claim 7, characterized in that: The feeding method comprises the following steps: The bag is rotated, and the rotating motor (1-2-2) in the bag loading mechanism (1-2) is rotated to make the first bag clamping cylinder (1-2-8) rotate to the bag body of the bag feeding machine (1), and the material is taken by clamping the cylinder, and then the bag body is clamped to the transition clamping mechanism (2-1) by resetting, and the bag body is temporarily clamped by the clamping cylinder (2-1-2) of the transition clamping mechanism (2-1) to wait for the material; Switching the feeding, the bag opening cylinder (2-3-15) is driven by the step-feeding mechanism (2-3) to move to the transition clamping mechanism (2-1), and the bag opening suction cup (2-3-17) is driven by the bag opening cylinder (2-3-15) to clamp the bag body to achieve the purpose of taking the bag, and then the bag body is adsorbed by the bag opening suction cup (2-3-17), and the bag body is opened by the return stroke of the bag opening cylinder (2-3-15), and the bag is driven by the step-feeding mechanism (2-3) to move to the lower end of the bag clamp (2-2) to perform the initial dropping, and the initial weighing module (2-2-2) is used to perform the initial weighing; Secondary material replenishment, the bag body after loading is driven by the step conveying mechanism (2-3) to be transported to the lower end of the secondary weighing mechanism (2-4) for secondary weighing. During the weighing process, the cone tank screw machine (4) is used to perform secondary material replenishment through the detection error.

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