Device for pressing bag head into barrel and using method thereof

Abstract

The invention discloses a device for downwards pressing a bag head into a barrel and a using method of the device. The device for downwards pressing the bag head into the barrel comprises a bag head-to-barrel downwards pressing assembly, a barrel limiting assembly, a bag head guiding and supporting frame and a roller way conveyor. A roller way conveyor is installed in the middle of the bag head guiding and supporting frame, and a bag head-in-barrel pressing assembly is arranged above the position, corresponding to the roller way conveyor, of the bag head guiding and supporting frame and used for pressing a bag head downwards into a packaging barrel. A barrel limiting assembly is arranged below the bag head guiding and supporting frame corresponding to the roller way conveyor and used for positioning the packaging barrel and limiting the position of the packaging barrel on a roller way of the roller way conveyor; deformation force and friction force of a packaging bag head generated by contact of the bag head and the inner wall of a barrel are adopted, so that the bag head does not tilt; automatic equipment is adopted, and whole-process mechanical operation is achieved; manual operation is not needed in the whole process, safety of workers is guaranteed, labor force is reduced, and labor cost is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of packaging equipment, and in particular relates to a device for pressing a bag head downward into a barrel and a use method thereof. Background Art

[0002] The equipment for pressing the bag head into the barrel is mainly used to press the bag head in an upright random state into the barrel with the bag mouth tied at the front end through this type of equipment, and the bag head does not tilt up. This type of equipment is a key part of the fully automatic barreled material packaging production line. The efficiency of this type of equipment in pressing the bag head into the barrel and the success of pressing the bag head directly affect the subsequent actions of covering the barrel cover, collecting the barrel hoop and stacking in the barreled material packaging production line, which will directly or indirectly affect the working performance of the entire fully automatic packaging production line. However, the equipment for pressing the bag head in the existing technology has low automation and high failure rate, which seriously restricts the working efficiency of the production line. The reason is that when the upright bag head in the packaging barrel with a tied front end moves from the tying station to the bag head pressing station, the packaging bag in the barrel is bumped during the displacement process and the packaging barrel is started and stopped, the bag head will be in the initial upright position in the barrel, and will become a random position later, resulting in the bag head in the barrel sometimes leaning to the left and sometimes leaning to the right, and it is difficult for the equipment to reliably identify the position of the bag head. If the bag head position cannot be captured, the bag head pressing fails.

[0003] At present, the existing technology for improving the bag head pressing down of packaging bags mainly adopts the method of hard pressing the bag head into the barrel. Although it can meet the needs of pressing the bag head into the barrel for some packages, it cannot solve the above problems for some fragile and dangerous materials that cannot withstand hard pressure; most of them still use semi-automatic equipment to assist manual work to press down the bag head, which is not reliable and does not liberate labor very well, and needs further improvement. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention provides a device for pressing the bag head into a barrel and a method for using the device, which stabilizes the positioning of the bag head and the process of pressing the bag into the barrel, so as to improve the product packaging production speed and automation level, reduce the labor intensity of workers, and save labor costs.

[0005] To solve the above problems, the technical solution provided by the present invention is as follows:

[0006] The embodiment of the present invention provides a device for pressing a bag head into a barrel, comprising a bag head pressing into a barrel component (1), a barrel limiting component (2), a bag head guide and support frame (3) and a roller conveyor (4); the bag head guide and support frame (3) serve as an integral frame of the entire device, the roller conveyor (4) is installed in the middle of the bag head guide and support frame (3), the roller conveyor (4) is used to supply a packaging barrel (5), and the bag head guide and support frame (3) correspond to the roller conveyor (4). A bag head pressing assembly (1) is arranged above the roller conveyor (4) for pressing the bag head downward into the packaging barrel (5); a barrel limiting assembly (2) is arranged below the roller conveyor (4) corresponding to the bag head guide and support frame (3); two limiting rods (2-1) in the barrel limiting assembly (2) extend from between two roller bars (4-1) of the roller conveyor (4) to position the packaging barrel (5) and limit the position of the packaging barrel (5) on the roller of the roller conveyor (4).

[0007] In a preferred embodiment of the present invention, the bag head pressing assembly (1) comprises a bag head pressing cylinder (1-1), a bag head shifting cylinder (1-2), a bag head shifting limiting cylinder (1-3), a shifting bag head clamping assembly positioning plate (1-4), a bag head clamping assembly positioning plate (1-5), a bag head pressing cylinder (1-6), a bag head pressing cylinder supporting plate (1-7), a bag head pressing plate (1-8), a bag head pressing groove plate (1-9), a bag head clamping cylinder (1-10), a bag head shifting limiting rod (1-11), a bag head shifting guide slider (1-12), a bag head shifting guide rail (1-13), an up and down moving bracket (1-14), a guide rod positioning seat pad (1-15), an up and down moving linear bearing (1-16) and a bag head pressing guide shaft (1-17);

[0008] The bag head pressing cylinder (1-1) is installed on the up-and-down movable bracket (1-14), and a guide rod positioning seat pad (1-15) is installed on both sides of the up-and-down movable bracket (1-14). The guide rod positioning seat pad (1-15) is installed on the up-and-down movable linear bearing (1-16), and the up-and-down movable linear bearing (1-16) and its corresponding bag head pressing guide shaft (1-17) 17 are slidably matched; when the bag head pressing cylinder (1-1) installed on the upper end of the up-and-down movable bracket (1-14) is extended, it pushes the up-and-down movable bracket (1-14) to move downward along the bag head pressing guide shaft (1-17), and the functional structures fixed thereon also move up and down accordingly;

[0009] The bag head shifting cylinder (1-2) and the bag head shifting limiting cylinder (1-3) are fixed to the up-and-down movable bracket (1-14) through the shifting bag head clamping assembly positioning plate (1-4); the bag head clamping assembly positioning plate (1-5) is installed on the front end of the bag head shifting cylinder (1-2); the lower end is fixed to the up-and-down movable bracket (1-14) by the bag head shifting guide rail (1-13) and the bag head shifting guide slider (1-12); the end of the piston rod of the bag head shifting cylinder (1-2) is threadedly connected to the bag head clamping assembly positioning plate (1-5) and fixed on the bag head shifting guide rail (1-13); the bag head shifting guide rail (1-13) cooperates with the bag head shifting guide slider (1-12) to make linear motion;

[0010] The bag head shift limiting rod (1-11) is fixed to the end of the piston rod of the bag head shift limiting cylinder (1-3). The function of the bag head shift limiting rod (1-11) is to drive the bag head shift cylinder (1-2) not only to not retract but also to move forward a certain distance under the action of the bag head shift limiting cylinder (1-3) when the bag head shift cylinder (1-2) retracts. This makes the bag head close to the inner wall of the packaging barrel (5).

[0011] The cylinder diameter of the bag head displacement limiting cylinder (1-3) is larger than the cylinder diameter of the bag head displacement cylinder (1-2); when the bag head displacement cylinder (1-2) is extended, the bag head clamping assembly positioning plate (1-5) makes a linear motion along the bag head displacement guide rail (1-13); the bag head clamping cylinder (1-10) is installed at the front end of the bag head clamping assembly positioning plate (1-5); the left and right clamping fingers on the bag head clamping cylinder (1-10) are rigidly connected to the two bag pressing head groove plates (1-9); the bag pressing head cylinder (1-6) is fixed on the bag pressing head cylinder support plate (1-7); the bag pressing head cylinder support plate (1-7) is fixed on the bag pressing head cylinder (1-10); and the bag pressing head plate (1-8) is installed at the lower end of the bag pressing head cylinder (1-6).

[0012] In a preferred embodiment of the present invention, the barrel limiting assembly (2) comprises a limiting rod (2-1), a barrel L-shaped baffle support plate (2-2), a barrel limiting guide shaft (2-3), a gear clamping bag head assembly positioning plate (2-4), a linear bearing (2-5) and a barrel limiting cylinder (2-6); two linear bearings (2-5) and two barrel limiting guide shafts (2-3) are connected through through holes on both sides of the gear clamping bag head assembly positioning plate (2-4), the barrel limiting cylinder (2-6) is connected to the middle through hole of the gear clamping bag head assembly positioning plate (2-4), the barrel L-shaped baffle support plate (2-2) is connected to the top of the barrel limiting cylinder (2-6) and the top of the two barrel limiting guide shafts (2-3), and two limiting rods (2-1) are arranged on the top of the barrel L-shaped baffle support plate (2-2);

[0013] When the limiting barrel cylinder (2-6) extends and retracts, the limiting rod (2-1) is pushed to move, thereby driving the entire barrel limiting assembly (2) to move. A barrel rubber sleeve is installed on the limiting rod (2-1) to prevent the limiting rod (2-1) from rigidly contacting the packaging barrel (5).

[0014] In a preferred embodiment of the present invention, the bag head guide and support frame (3) is provided with a V-shaped member (3-1) at the entrance position where the packaging barrel (5) enters the roller conveyor (4), which is used to guide the vertical bag head on the packaging barrel (5) to the center and press it down to a horizontal position.

[0015] The embodiment of the present invention further provides a method for using the device for pressing the bag head into the barrel as in the above embodiment, which comprises the following steps:

[0016] Step 1, when the packaging barrel (5) with the packaging bag tied is conveyed to the device for pressing the bag head into the barrel, the bag head guide and the V-shaped plate (3-1) on the support frame (3) first change the orientation of the packaging bag mouth from vertical to horizontal and center it, so as to facilitate the subsequent bag head clamping action; then the roller conveyor (4) conveys the packaging barrel (5) to the barrel limit assembly (2) and stops, indicating that the packaging barrel (5) has been in place;

[0017] Step 2, the bag head pressing cylinder (1-1) extends out, pushes the bag head pressing to the barrel assembly (1) downward to the position of the bag mouth, and at the same time, the bag head shifting cylinder (1-2) and the bag head shifting limiting cylinder (1-3) on the bag head pressing to the barrel assembly (1) extend out at the same time, and the bag head shifting cylinder (1-2) pushes the bag head clamping cylinder (-10) on the bag head clamping assembly positioning plate (1-5) to the top of the bag head, and the bag head clamping cylinder (1-10) then drives the bag head pressing groove plate (1-9) to grab the bag mouth, and then the bag head pressing cylinder (1-6) extends out, and the bag head pressing plate (1-8) thereon presses the bag head downward, so that the bag head changes from a horizontal position to an oblique downward position, and at this time, the bag head has been clamped;

[0018] Step 3, the bag head pressing cylinder (1-1) retracts, driving the bag head pressing assembly (1) to move upward, and then the bag head shifting cylinder (1-2) retracts, driving the bag head pressing groove plate (1-9) and the bag head pressing plate (1-8) to steadily move the bag mouth into the packaging barrel (5), and then the bag head shifting limiting cylinder (1-3) extends, and the bag head shifting limiting rod (1-11) on the bag head shifting limiting cylinder (1-3) presses against the bag head clamping assembly positioning plate ( 1-5), and moves it forward, so that the bag head is against the inner wall of the packaging barrel (5), the bag head pressing cylinder (1-6) and the bag head clamping cylinder (1-10) are reset, and the lower surfaces of the two bag head pressing groove plates (1-9) on the bag head clamping cylinder (1-10) are a plane, and then the bag head pressing cylinder (1-1) extends and retracts reciprocatingly, and the bag head pressing groove plates (1-9) press the bag head several times, so that the bag mouth is completely pressed into the barrel (5);

[0019] Step 4, finally, the barrel limiting cylinder (2-6) in the barrel limiting assembly (2) is retracted, and the packaging barrel (5) is transported to the next process via the roller conveyor (4), indicating that the process of pressing the bag head into the packaging barrel (5) is completed.

[0020] Compared with the prior art, the embodiment of the present invention provides a device for pressing the bag head into the barrel and a method for using the device, which has the following beneficial effects: (1) The device uses the deformation force and friction force of the packaging bag head generated by the contact between the bag head and the inner wall of the barrel, so as to achieve the bag head not to tilt up. Its working process is: first, the bag head is forced to fall from the random position to the horizontal position and centered through the limit assembly (at this time, the bag head is tied outside the barrel); secondly, after clamping the bag head and lifting the bag head, the bag head is moved to the upper part of the barrel and then sent into the barrel (if the bag head clamping action is released at this time, the bag head will bounce up); then, the clamped bag head is moved horizontally for a certain distance so that the bag head is close to the inner wall of the barrel; finally, the clamped bag head is released, and the bag head clamping assembly moves backward for a distance, and then the root of the bag head is pressed down as a whole. The structure of the present invention is simple, the performance is stable, and the reliability is very high. (2) The present invention adopts automated equipment and mechanical operation throughout the process; no manual operation is required throughout the process, which ensures the safety of the staff, reduces labor, and reduces labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 A schematic diagram of the three-dimensional structure of a device for pressing a bag head into a barrel provided in an embodiment of the present application.

[0023] Figure 2 A front view of a device for pressing a bag head into a barrel provided in an embodiment of the present application.

[0024] Figure 3 A left view of a device for pressing a bag head into a barrel provided in an embodiment of the present application.

[0025] Figure 4 A top view of a device for pressing a bag head into a barrel provided in an embodiment of the present application.

[0026] Figure 5 A schematic diagram of the structure of a bag head pressing down component into a barrel of a device for pressing down a bag head into a barrel provided in an embodiment of the present application.

[0027] Figure 6 A physical picture of the bag head pressing into barrel components of a device for pressing the bag head into the barrel provided in an embodiment of the present application.

[0028] Figure 7 A schematic diagram of the structure of a barrel limiting component of a device for pressing a bag head down into a barrel provided in an embodiment of the present application.

[0029] Figure 8 A schematic diagram of the bag head guide and support frame structure of a device for pressing the bag head into a barrel provided in an embodiment of the present application.

[0030] Fig. 9 This is a schematic diagram of the posture change of the bag head in the packaging barrel after processing provided in an embodiment of the present application. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application. The "upper", "lower", "front", "back", "left", "right", etc. used in the installation position or direction of the structure or parts of the present embodiment are based on the orientation of the given drawings. They are only for the convenience of expression to distinguish the relative positions of the parts or directions, and do not represent the orientation of the device or parts of the present embodiment when the bag head is pressed down to the barrel.

[0032] like Figures 1 to 8As shown, an embodiment of the present invention provides a device for pressing a bag head into a barrel, comprising a bag head pressing component 1, a barrel limiting component 2, a bag head guide and support frame 3, and a roller conveyor 4; the bag head guide and support frame 3 serves as an integral frame of the entire device. A roller conveyor 4 is installed in the middle of the bag head guide and support frame 3, and the roller conveyor 4 is used to supply a packaging barrel 5. A bag head pressing component 1 is arranged above the roller conveyor 4 corresponding to the bag head guide and support frame 3, which is used to press the bag head into the packaging barrel 5. A barrel limiting component 2 is arranged below the roller conveyor 4 corresponding to the bag head guide and support frame 3, and two limiting rods 2-1 in the barrel limiting component 2 extend from between two roller bars 4-1 of the roller conveyor 4 to position the packaging barrel 5 and limit the position of the packaging barrel 5 on the roller conveyor 4. Under the action of the control element of the device, the various functional structures of this embodiment coordinate with each other, so that it can complete the process of pressing the bag head into the barrel.

[0033] like Figure 5 and Figure 6 As shown, the bag head pressing component 1 into the barrel includes a bag head pressing cylinder 1-1, a bag head shifting cylinder 1-2, a bag head shifting limiting cylinder 1-3, a shifting bag head clamping component positioning plate 1-4, a bag head clamping component positioning plate 1-5, a bag head pressing cylinder 1-6, a bag head pressing cylinder support plate 1-7, a bag head pressing plate 1-8, a bag head pressing groove plate 1-9, a bag head clamping cylinder 1-10, a bag head shifting limiting rod 1-11, a bag head shifting guide slider 1-12, a bag head shifting guide rail 1-13, an up and down moving bracket 1-14, a guide rod positioning seat plate 1-15, an up and down moving linear bearing 1-16 and a bag head pressing guide shaft 1-17.

[0034] The bag head pressing cylinder 1-1 is installed on the up and down moving bracket 1-14, and a guide rod positioning seat pad 1-15 is installed on each side of the up and down moving bracket 1-14. The guide rod positioning seat pad 1-15 is installed on the up and down moving linear bearing 1-16, and the up and down moving linear bearing 1-16 is slidably matched with its corresponding bag head pressing guide shaft 1-1717; when the bag head pressing cylinder 1-1 installed on the upper end of the up and down moving bracket 1-14 is extended, it pushes the up and down moving bracket 1-14 to move downward along the bag head pressing guide shaft 1-17, and the various functional structures fixed thereon also move up and down.

[0035] The bag head shifting cylinder 1-2 and the bag head shifting limiting cylinder 1-3 are fixed on the up-and-down moving bracket 1-14 through the shifting bag head clamping assembly positioning plate 1-4; the bag head clamping assembly positioning plate 1-5 is installed at the front end of the bag head shifting cylinder 1-2, and the lower end is fixed to the up-and-down moving bracket 1-14 by the bag head shifting guide rail 1-13 and the bag head shifting guide slider 1-12; the end of the piston rod of the bag head shifting cylinder 1-2 is threadedly connected to the bag head clamping assembly positioning plate 1-5, and is fixed along the bag head shifting guide rail 1-13; the bag head shifting guide rail 1-13 cooperates with the bag head shifting guide slider 1-12 to make linear motion.

[0036] A bag head shift limit rod 1-11 is fixed to the end of the piston rod of the bag head shift limit cylinder 1-3. Its function is that when the bag head shift cylinder 1-2 is retracted, the bag head clamping assembly positioning plate 1-5 and the bag head shift limit cylinder 1-3 act to drive the bag head shift cylinder 1-2 not only not to retract but also to move forward a certain distance, so that the bag head is close to the inner wall of the packaging barrel 5.

[0037] The cylinder diameter of the bag head shift limit cylinder 1-3 is larger than the cylinder diameter of the bag head shift cylinder 1-2; when the bag head shift cylinder 1-2 extends, the bag head clamping assembly positioning plate 1-5 makes a linear motion along the bag head shifting guide rail 1-13, and the bag head clamping cylinder 1-10 is installed at the front end of the bag head clamping assembly positioning plate 1-5, the left and right clamping fingers on the bag head clamping cylinder 1-10 are rigidly connected to two bag pressing head groove plates 1-9, the bag pressing head cylinder 1-6 is fixed on the bag pressing head cylinder support plate 1-7, the bag pressing head cylinder support plate 1-7 is fixed on the bag pressing head cylinder 1-10, and the bag pressing head plate 1-8 is installed at the lower end of the bag pressing head cylinder 1-6.

[0038] like Figure 7 As shown, the barrel limit assembly 2 includes a limit rod 2-1, a barrel L-shaped baffle support plate 2-2, a barrel limit guide shaft 2-3, a gear bag clamping head assembly positioning plate 2-4, a linear bearing 2-5 and a limit barrel cylinder 2-6; two linear bearings 2-5 and two barrel limit guide shafts 2-3 are connected through the through holes on both sides of the gear bag clamping head assembly positioning plate 2-4, the limit barrel cylinder 2-6 is connected to the middle through hole of the gear bag clamping head assembly positioning plate 2-4, the barrel L-shaped baffle support plate 2-2 is connected to the top of the limit barrel cylinder 2-6 and the top of the two barrel limit guide shafts 2-3, and the two limit rods 2-1 are arranged on the top of the barrel L-shaped baffle support plate 2-2; when the limit barrel cylinder 2-6 extends and retracts, it pushes the limit rod 2-1 to move, driving the entire barrel limit assembly 2 to move, and a barrel rubber sleeve is installed on the limit rod 2-1 to prevent the limit rod 2-1 from rigidly contacting the packaging barrel 5. The main function of the barrel limiting assembly 2 is to limit the position of the packaging barrel 5 on the roller conveyor, so as to facilitate the bag head in the packaging barrel 5 to be pressed into the barrel.

[0039] like Figure 8As shown, the bag head guide and support frame 3 is provided with a V-shaped member 3-1 at the entrance position of the packaging barrel 5 entering the roller conveyor 4, which is used to guide the vertical bag head on the packaging barrel 5 to the center and press it to a horizontal position.

[0040] The embodiment of the present invention provides a method for using a device for pressing a bag head into a barrel, which realizes closing and tying the mouth of a packaging bag by pressing the bag head into a barrel, and includes the following steps:

[0041] Step 1, when the packaging barrel 5 with the packaging bag tied is transported to the device for pressing the bag head down into the barrel, Fig. 9 a, firstly, the bag head guide and the V-shaped plate 3-1 on the support frame 3 change the orientation of the packaging bag mouth from vertical to horizontal and center it, so as to facilitate the subsequent bag head clamping action, such as Fig. 9 b; then the roller conveyor 4 transports the packaging barrel 5 to the barrel limit assembly 2 and stops, indicating that the packaging barrel 5 is in place;

[0042] Step 2: The bag head pressing cylinder 1-1 extends to push the bag head pressing assembly 1 downward to the bag mouth position. At the same time, the bag head shifting cylinder 1-2 and the bag head shifting limiting cylinder 1-3 on the bag head pressing assembly 1 extend at the same time. The bag head shifting cylinder 1-2 pushes the bag head clamping cylinder 1-10 on the bag head clamping assembly positioning plate 1-5 to the top of the bag head. Fig. 9 c, the bag clamping head cylinder 1-10 drives the bag pressing head groove plate 1-9 to grab the bag mouth, and the bag pressing head cylinder 1-6 extends, and the bag pressing head plate 1-8 on it presses the bag head downward, so that the bag head changes from a horizontal position to an oblique downward position. At this time, the packaging bag head has been clamped;

[0043] Step 3, the bag head pressing cylinder 1-1 retracts, driving the bag head pressing assembly 1 to move upward, and the bag head shifting cylinder 1-2 retracts, driving the bag head pressing groove plate 1-9 and the bag head pressing plate 1-8 to smoothly move the bag mouth into the packaging barrel 5, and then the bag head shifting limiting cylinder 1-3 extends, and the bag head shifting limiting rod 1-11 on the bag head shifting limiting cylinder 1-3 presses against the bag head clamping assembly positioning plate 1-5 and moves it forward, so that the bag head presses against the inner wall of the packaging barrel 5, and then the bag head pressing cylinder 1-6 and the bag head clamping cylinder 1-10 are reset, and the lower surfaces of the two bag head pressing groove plates 1-9 on the bag head clamping cylinder 1-10 are a plane, and then the bag head pressing cylinder 1-1 extends and retracts reciprocatingly, and the bag head pressing groove plate 1-9 presses the bag head several times, so that the bag mouth is completely pressed into the barrel 5;

[0044] Step 4, finally, the barrel limiting cylinder 2-6 in the barrel limiting assembly 2 is retracted, and the packaging barrel 5 is transported to the next process through the roller conveyor 4, indicating that the process of pressing the bag head into the packaging barrel 5 is completed.

[0045] Although the present invention has been disclosed as above in terms of preferred embodiments, the above preferred embodiments are not intended to limit the present invention. A person skilled in the art may make various modifications and alterations without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be based on the scope defined in the claims.

Claims

1. A device for pressing the bag head down into the barrel, characterized in that: The invention comprises a bag head pressing component (1) into a barrel, a barrel limiting component (2), a bag head guide and support frame (3) and a roller conveyor (4); the bag head guide and support frame (3) serves as an integral frame of the entire device, the roller conveyor (4) is installed in the middle of the bag head guide and support frame (3), the roller conveyor (4) is used to supply packaging barrels (5), the bag head guide and support frame (3) is provided with a bag head pressing component (1) above the roller conveyor (4) for pressing the bag head into the packaging barrel (5); the bag head guide and support frame (3) is provided with a barrel limiting component (2) below the roller conveyor (4), two limiting rods (2-1) in the barrel limiting component (2) extend from between two roller bars (4-1) of the roller conveyor (4) to position the packaging barrel (5) and limit the position of the packaging barrel (5) on the roller of the roller conveyor (4).

2. The device for pressing the bag head down into the barrel according to claim 1, characterized in that: The bag head pressing assembly (1) comprises a bag head pressing cylinder (1-1), a bag head shifting cylinder (1-2), a bag head shifting limiting cylinder (1-3), a shifting bag head clamping assembly positioning plate (1-4), a bag head clamping assembly positioning plate (1-5), a bag head pressing cylinder (1-6), a bag head pressing cylinder supporting plate (1-7), a bag head pressing plate (1-8), a bag head pressing groove plate (1-9), a bag head clamping cylinder (1-10), a bag head shifting limiting rod (1-11), a bag head shifting guide slider (1-12), a bag head shifting guide rail (1-13), an up-and-down moving bracket (1-14), a guide rod positioning seat pad (1-15), an up-and-down moving linear bearing (1-16) and a bag head pressing guide shaft (1-17); The bag head pressing cylinder (1-1) is installed on the up-and-down movable bracket (1-14), and a guide rod positioning seat pad (1-15) is installed on both sides of the up-and-down movable bracket (1-14). The guide rod positioning seat pad (1-15) is installed on the up-and-down movable linear bearing (1-16), and the up-and-down movable linear bearing (1-16) and its corresponding bag head pressing guide shaft (1-17) 17 are slidably matched; when the bag head pressing cylinder (1-1) installed on the upper end of the up-and-down movable bracket (1-14) is extended, it pushes the up-and-down movable bracket (1-14) to move downward along the bag head pressing guide shaft (1-17), and the functional structures fixed thereon also move up and down accordingly; The bag head shifting cylinder (1-2) and the bag head shifting limiting cylinder (1-3) are fixed to the up-and-down movable bracket (1-14) through the shifting bag head clamping assembly positioning plate (1-4); the bag head clamping assembly positioning plate (1-5) is installed on the front end of the bag head shifting cylinder (1-2); the lower end is fixed to the up-and-down movable bracket (1-14) by the bag head shifting guide rail (1-13) and the bag head shifting guide slider (1-12); the end of the piston rod of the bag head shifting cylinder (1-2) is threadedly connected to the bag head clamping assembly positioning plate (1-5) and fixed on the bag head shifting guide rail (1-13); the bag head shifting guide rail (1-13) cooperates with the bag head shifting guide slider (1-12) to make linear motion; The bag head shift limiting rod (1-11) is fixed to the end of the piston rod of the bag head shift limiting cylinder (1-3). The function of the bag head shift limiting rod (1-11) is to drive the bag head shift cylinder (1-2) not only to not retract but also to move forward a certain distance under the action of the bag head shift limiting cylinder (1-3) when the bag head shift cylinder (1-2) retracts. This makes the bag head close to the inner wall of the packaging barrel (5). The cylinder diameter of the bag head displacement limiting cylinder (1-3) is larger than the cylinder diameter of the bag head displacement cylinder (1-2); when the bag head displacement cylinder (1-2) is extended, the bag head clamping assembly positioning plate (1-5) makes a linear motion along the bag head displacement guide rail (1-13); the bag head clamping cylinder (1-10) is installed at the front end of the bag head clamping assembly positioning plate (1-5); the left and right clamping fingers on the bag head clamping cylinder (1-10) are rigidly connected to the two bag pressing head groove plates (1-9); the bag pressing head cylinder (1-6) is fixed on the bag pressing head cylinder support plate (1-7); the bag pressing head cylinder support plate (1-7) is fixed on the bag pressing head cylinder (1-10); and the bag pressing head plate (1-8) is installed at the lower end of the bag pressing head cylinder (1-6).

3. The device for pressing the bag head down into the barrel according to claim 2, characterized in that: The barrel limiting assembly (2) comprises a limiting rod (2-1), a barrel L-shaped baffle support plate (2-2), a barrel limiting guide shaft (2-3), a gear clamping bag head assembly positioning plate (2-4), a linear bearing (2-5) and a barrel limiting cylinder (2-6); the two linear bearings (2-5) and the two barrel limiting guide shafts (2-3) are connected through holes on both sides of the gear clamping bag head assembly positioning plate (2-4); the barrel limiting cylinder (2-6) is connected to the middle through hole of the gear clamping bag head assembly positioning plate (2-4); the barrel L-shaped baffle support plate (2-2) is connected to the top of the barrel limiting cylinder (2-6) and the top of the two barrel limiting guide shafts (2-3); and the two limiting rods (2-1) are arranged on the top of the barrel L-shaped baffle support plate (2-2); When the limiting barrel cylinder (2-6) extends and retracts, the limiting rod (2-1) is pushed to move, thereby driving the entire barrel limiting assembly (2) to move. A barrel rubber sleeve is installed on the limiting rod (2-1) to prevent the limiting rod (2-1) from rigidly contacting the packaging barrel (5).

4. The device for pressing the bag head down into the barrel according to claim 3, characterized in that: The bag head guide and support frame (3) is provided with a V-shaped member (3-1) at the entrance position of the packaging barrel (5) entering the roller conveyor (4), which is used to guide the vertical bag head on the packaging barrel (5) to the center and press it down to a horizontal position.

5. A method for using the device for pressing the bag head into the barrel as claimed in claim 4, characterized in that: The following steps are involved: Step 1, when the packaging barrel (5) with the packaging bag tied is conveyed to the device for pressing the bag head into the barrel, the bag head guide and the V-shaped plate (3-1) on the support frame (3) first change the orientation of the packaging bag mouth from vertical to horizontal and center it, so as to facilitate the subsequent bag head clamping action; then the roller conveyor (4) conveys the packaging barrel (5) to the barrel limit assembly (2) and stops, indicating that the packaging barrel (5) has been in place; Step 2, the bag head pressing cylinder (1-1) extends out, pushes the bag head pressing to the barrel assembly (1) downward to the position of the bag mouth, and at the same time, the bag head shifting cylinder (1-2) and the bag head shifting limiting cylinder (1-3) on the bag head pressing to the barrel assembly (1) extend out at the same time, and the bag head shifting cylinder (1-2) pushes the bag head clamping cylinder (-10) on the bag head clamping assembly positioning plate (1-5) to the top of the bag head, and the bag head clamping cylinder (1-10) then drives the bag head pressing groove plate (1-9) to grab the bag mouth, and then the bag head pressing cylinder (1-6) extends out, and the bag head pressing plate (1-8) thereon presses the bag head downward, so that the bag head changes from a horizontal position to an oblique downward position, and at this time, the bag head has been clamped; Step 3, the bag head pressing cylinder (1-1) retracts, driving the bag head pressing assembly (1) to move upward, and then the bag head shifting cylinder (1-2) retracts, driving the bag head pressing groove plate (1-9) and the bag head pressing plate (1-8) to steadily move the bag mouth into the packaging barrel (5), and then the bag head shifting limiting cylinder (1-3) extends, and the bag head shifting limiting rod (1-11) on the bag head shifting limiting cylinder (1-3) presses against the bag head clamping assembly positioning plate ( 1-5), and moves it forward, so that the bag head is against the inner wall of the packaging barrel (5), the bag head pressing cylinder (1-6) and the bag head clamping cylinder (1-10) are reset, and the lower surfaces of the two bag head pressing groove plates (1-9) on the bag head clamping cylinder (1-10) are a plane, and then the bag head pressing cylinder (1-1) extends and retracts reciprocatingly, and the bag head pressing groove plates (1-9) press the bag head several times, so that the bag mouth is completely pressed into the barrel (5); Step 4, finally, the barrel limiting cylinder (2-6) in the barrel limiting assembly (2) is retracted, and the packaging barrel (5) is transported to the next process via the roller conveyor (4), indicating that the process of pressing the bag head into the packaging barrel (5) is completed.

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