CN-117068493-B - Filling structure and filling method of multi-row strip-shaped bag packaging machine

CN117068493BCN 117068493 BCN117068493 BCN 117068493BCN-117068493-B

Abstract

The invention discloses a filling method of a multi-row strip-shaped bag packaging machine, which comprises the steps of welding an nth transverse sealing position of a strip-shaped bag by using an upper transverse sealing mechanism, filling materials into an nth separation bag body through a filling nozzle of a liftable filling needle, clamping an nth-1 transverse sealing position by using a lower transverse sealing mechanism during or after filling, pulling down a film, and welding secondarily while finishing filling before an nth+1th transverse sealing position of the strip-shaped bag reaches the upper transverse sealing mechanism. The filling method of the multi-column strip-shaped bag packaging machine avoids the influence of filling materials on the welding of the transverse sealing position, ensures the welding quality of the transverse sealing, reduces the risk of liquid leakage or powder leakage, and improves the welding qualification rate of the transverse sealing of the product. The invention also discloses a filling structure of the multi-row strip-shaped bag packaging machine.

Inventors

XU WEIKAI
ZHAO CHENGBIAO
CAO XIANGXIANG
LI ZENGBO
SONG ZHIWEI
QU JUNYANG

Assignees

山东新华医疗器械股份有限公司

Dates

Publication Date: 20260508
Application Date: 20230912

Claims (12)

1. A filling method of a multi-row strip-shaped bag packaging machine is characterized in that an upper transverse sealing mechanism is used for welding the nth transverse sealing position of a strip-shaped bag, and simultaneously filling materials into the nth separation bag body through a filling nozzle of a lifting filling needle; During or after filling, the upper transverse sealing mechanism is retracted to a film pulling position, a lower transverse sealing mechanism is used for clamping the n-1 th transverse sealing position, and the film is pulled downwards and welded secondarily at the same time; when the material is liquid, the method comprises the following steps: a) When the upper transverse sealing mechanism is used for closing the nth transverse sealing position of the welding film material, the filling needle starts to fill, the filling mouth of the filling needle is separated from the liquid level in the bag body by a first distance, and the filling mouth of the filling needle rises synchronously with the liquid level in the bag body; b) After the upper transverse sealing mechanism is retracted to the film drawable position, the lower transverse sealing mechanism clamps the n-1 th transverse sealing position of the film material, the film is drawn downwards and welded for the second time, and the filling mouth of the filling needle is kept at a second distance from the liquid level in the bag body; When the liquid filling amount in the bag body is 70% -80%, the upper transverse sealing mechanism is welded, and the rest liquid filling amount is finished when the lower transverse sealing mechanism descends to draw the film; And when the lower transverse sealing mechanism descends to draw the film to a half position, the filling is completed, and when the lower transverse sealing mechanism finishes drawing the film, the n+1th transverse sealing position of the film material is opposite to the upper transverse sealing mechanism.
2. The filling method of a multiple row strip bag packing machine according to claim 1, wherein the filling needle is controlled to be lifted by a first lifting mechanism, and the first lifting mechanism is used for controlling the height of a filling nozzle of the filling needle from a liquid level; The lower transverse sealing mechanism is controlled to lift through a second lifting mechanism, and the second lifting mechanism is used for controlling the height of the lower transverse sealing mechanism.
3. A multi-row strip bag packing machine filling structure for realizing the multi-row strip bag packing machine filling method according to claim 1 or 2, comprising: The upper transverse sealing mechanism is fixedly arranged on the frame of the packaging machine; the lower transverse sealing mechanism is arranged on the frame of the packaging machine in a lifting manner; The filling mechanism is arranged at the top of the frame of the packaging machine; the lower transverse sealing mechanism is arranged at the lower end of the upper transverse sealing mechanism, the filling mechanism comprises a filling needle, the filling needle is arranged on the frame in a lifting manner, and a filling nozzle of the filling needle is arranged corresponding to the upper transverse sealing mechanism.
4. The multi-row strip-shaped bag packaging machine filling structure according to claim 3, wherein the upper transverse sealing mechanism comprises a first mounting bracket, an upper transverse sealing first die and an upper transverse sealing second die, and the molding side of the upper transverse sealing second die is arranged in opposite fit with the molding side of the upper transverse sealing first die; the first mounting bracket is fixedly connected to the frame, first guide structures are arranged on two sides of the first mounting bracket and used for driving the upper transverse sealing first die to move, and the upper transverse sealing second die is driven to move through the second guide structures.
5. The multi-row strip-shaped bag packing machine filling structure according to claim 4, wherein the first guiding structure comprises a first guiding shaft, one end of the first guiding shaft is fixedly connected with a first traction plate, and the other end of the first guiding shaft is connected with the upper transverse sealing first die; The second guide structure comprises a second guide shaft, one end of the second guide shaft is fixedly connected with the second traction plate, and the other end of the second guide shaft is connected with the upper transverse sealing second die; The first traction plate and the second traction plate are driven to move oppositely through a first power driving mechanism, so that the upper transverse sealing first die and the upper transverse sealing second die are driven to be welded or separated in a closed mode.
6. The filling structure of a multi-row strip-shaped bag packaging machine according to claim 5, wherein the first power driving mechanism comprises a first servo motor, a power output end of the first servo motor is connected with a first driving screw, a first threaded section and a second threaded section with opposite rotation directions are arranged on the first driving screw, the first threaded section is in threaded connection with the first traction plate, and the second threaded section is in threaded connection with the second traction plate; The first servo motor is fixedly connected to the first mounting bracket.
7. The multi-row strip-shaped bag packaging machine filling structure according to claim 3, wherein the lower transverse sealing mechanism comprises a second mounting bracket, a lower transverse sealing first die and a lower transverse sealing second die, and the molding side of the lower transverse sealing second die is arranged in opposite fit with the molding side of the lower transverse sealing first die; The second mounting bracket is vertically and slidably connected to the frame, third guide structures are arranged on two sides of the second mounting bracket and used for driving the lower transverse sealing first die to move, and the lower transverse sealing second die is driven to move through fourth guide structures.
8. The multi-row strip-shaped bag packing machine filling structure according to claim 7, wherein the third guiding structure comprises a third guiding shaft, one end of the third guiding shaft is fixedly connected with a third traction plate, and the other end of the third guiding shaft is connected with the lower transverse sealing first die; The fourth guide structure comprises a fourth guide shaft, one end of the fourth guide shaft is fixedly connected with the fourth traction plate, and the other end of the fourth guide shaft is connected with the lower transverse sealing second die; The third traction plate and the fourth traction plate are driven to move oppositely through a second power driving mechanism, so that the lower transverse sealing first die and the lower transverse sealing second die are driven to be welded or separated in a closed mode; The second mounting bracket is connected with a second lifting mechanism, and the second lifting mechanism drives the second mounting bracket to lift.
9. The filling structure of a multi-row strip-shaped bag packaging machine according to claim 8, wherein the second power driving mechanism comprises a second servo motor, a power output end of the second servo motor is connected with a second driving screw, a third threaded section and a fourth threaded section with opposite rotation directions are arranged on the second driving screw, the third threaded section is in threaded connection with the third traction plate, and the fourth threaded section is in threaded connection with the fourth traction plate.
10. The filling structure of a multiple row strip bag packing machine according to claim 8, wherein the second lifting mechanism comprises a third servo motor, the third servo motor is fixedly connected to the frame, and a power output end of the third servo motor drives the second mounting bracket to lift.
11. The filling structure of the multi-row strip-shaped bag packaging machine according to claim 3, wherein the filling mechanism comprises a filling needle and a filling pump, the outlet end of the filling pump is connected with the inner cavity of the filling needle through a hose, the filling pump is communicated with a liquid container through a pipeline, the filling needle is vertically and fixedly connected to a needle body supporting plate, and the needle body supporting plate is driven to lift through a fourth servo motor.
12. The filling structure of a multiple row strip bag packing machine according to claim 11, wherein a plurality of the filling needles are provided, and a plurality of the filling needles are disposed in parallel on the needle body support plate.

Description

Filling structure and filling method of multi-row strip-shaped bag packaging machine Technical Field The invention relates to the technical field of packaging equipment, in particular to a filling structure and a filling method of a multi-row strip-shaped bag packaging machine. Background The multi-column packing machine is a packing device widely used in the packing machinery industry at present. The packaging machine is efficient, stable and accurate, can complete multiple rows of packaging tasks simultaneously, and has higher production efficiency and application prospect. The multi-column packing machine is widely applied to the industries of food, medicine, chemical industry, daily chemicals and the like. The filling products of the multi-row strip-shaped bag packaging machine in the market are in a series of particles, powder, pills, liquid and the like, the liquid filling difficulty and the powder filling difficulty are the greatest, and along with the demand of productivity, the production speed and the product quality of the packaging machine required by customers are higher and higher. The multi-row strip-shaped bag packaging machine is high in running speed beat, the average running speed is 60 cut/min, the risk of liquid clamping in transverse sealing exists during liquid filling, the welding quality is affected after liquid clamping in transverse sealing, the risk probability of liquid leakage is high, and the qualification rate of products is reduced. When the powder or fine particle multi-row strip-shaped bag packaging machine is used for filling and sealing, the conditions that fine powder falls out untimely and powder is bleached exist, and the risk probability of transverse sealing and powder clamping is high. At present, a multi-row strip-shaped bag packaging machine conventionally adopts a mode of welding by a single transverse sealing die, the transverse sealing die realizes two functions of welding and drawing a film, the welding, film drawing and filling are performed simultaneously, the allowed filling time is short, the liquid or powder cannot be isolated from the film material in the transverse sealing welding area, and the probability of transverse sealing liquid and powder clamping is high. Disclosure of Invention In view of the above, the invention provides a filling method of a multi-row strip-shaped bag packaging machine, which avoids the influence of filling materials on the welding of a transverse sealing position, ensures the welding quality of the transverse sealing, reduces the risk of liquid leakage or powder leakage, and improves the welding qualification rate of the transverse sealing of products. The invention also provides a filling structure of the multi-row strip-shaped bag packaging machine. In order to achieve the above purpose, the present invention provides the following technical solutions: A multi-row strip-shaped bag packaging machine filling method uses an upper transverse sealing mechanism to weld the nth transverse sealing position of a strip-shaped bag, and simultaneously fills materials into the nth separation bag body through a filling nozzle of a lifting filling needle; and (3) clamping the n-1 th transverse sealing position by using a lower transverse sealing mechanism during or after filling, pulling down the film, and welding for the second time, and ending the filling before the n+1 th transverse sealing position of the strip-shaped bag reaches the upper transverse sealing mechanism. Optionally, when the material is liquid, the method comprises the following steps: a) When the upper transverse sealing mechanism is used for closing the nth transverse sealing position of the welding film material, the filling needle starts to fill, the filling mouth of the filling needle is separated from the liquid level in the bag body by a first distance, and the filling mouth of the filling needle rises synchronously with the liquid level in the bag body; b) After the upper transverse sealing mechanism is retracted to the film drawable position, the lower transverse sealing mechanism clamps the n-1 th transverse sealing position of the film material, the film is drawn downwards and welded for the second time, and the filling mouth of the filling needle is kept at a second distance from the liquid level in the bag body. Optionally, the filling needle is controlled to lift by a first lifting mechanism, and the first lifting mechanism is used for controlling the height of a filling nozzle of the filling needle from the liquid level; The lower transverse sealing mechanism is controlled to lift through a second lifting mechanism, and the second lifting mechanism is used for controlling the height of the lower transverse sealing mechanism. Optionally, when the liquid loading in the bag body is 70% -80%, the upper transverse sealing mechanism is welded, and the residual liquid loading is finished when the lower transverse sealing mechanism descends to draw the film; An