Sealing mechanism of special-shaped bag filling and packaging machine

Abstract

A sealing mechanism of a special-shaped bag filling and packaging machine comprises a machine frame and a heat sealing unit and is characterized in that the heat sealing unit comprises a first heat sealing assembly, a second heat sealing assembly, a hydraulic control system and at least one hydraulic cylinder, the first heat sealing assembly is installed on the machine frame and is vertically arranged, the hydraulic control system and all the hydraulic cylinders are installed on the machine frame, and the second heat sealing assembly is installed on the machine frame. The hydraulic control system communicates with all the hydraulic cylinders, and the second heat sealing assembly is installed on piston shafts of all the hydraulic cylinders and is opposite to the first heat sealing assembly. Compared with the prior art, the special-shaped bag sealing device has the beneficial effects that the hydraulic control system and the hydraulic cylinder are adopted to realize the sealing of the second heat sealing assembly and the first heat sealing assembly, so that the heat sealing pressure can be accurately adjusted, and a produced special-shaped bag finished product is good in quality and stable; and the auxiliary opening and closing structure can quickly complete most opening and closing actions, so that the hydraulic cylinder only needs to complete a small part of opening and closing actions, and the opening and closing speed can be effectively improved.

Description

Technical Field

[0001] This utility model relates to a sealing mechanism for a non-circular bag filling and packaging machine. Background Technology

[0002] Existing irregular bag filling and packaging machines have an unreasonable structure. When the finished irregular bags are delivered, they usually fall freely under their own weight, resulting in the finished irregular bags being scattered in a messy manner, requiring manual or equipment sorting.

[0003] The intelligent cartoon-type packaging machine disclosed in Chinese patent document CN103496452B, entitled "Intelligent Cartoon Packaging Machine", includes a machine body, a liquid-solid feeding device, a film feeding and bag making device, a cartoon bag punching and forming device, and a waste film recycling device. The machine body is L-shaped, and from the top to the tail of the L-shaped machine body, the liquid-solid feeding device, the forming device, the irregular bag forming and sealing device, the film clamping tube straightener, the main motor and reducer, the cartoon bag punching and forming device, and the waste film recycling device are arranged in sequence.

[0004] The irregular bag forming and sealing device of this intelligent cartoon-type packaging machine uses a cam to complete the mold opening and closing. The disadvantage of this structure is that the film bears too much mold closing pressure. Usually, a spring needs to be added to reduce the pressure when the mold closes. However, the spring still has the problem of difficult pressure adjustment. Utility Model Content

[0005] The purpose of this invention is to provide a sealing mechanism for a shaped bag filling and packaging machine. This sealing mechanism can adjust the mold closing pressure during heat sealing according to actual conditions. The technical solution adopted is as follows:

[0006] A sealing mechanism for a shaped bag filling and packaging machine includes a frame and a heat sealing unit. The heat sealing unit includes a first heat sealing component, a second heat sealing component, a hydraulic control system, and at least one hydraulic cylinder. The first heat sealing component is mounted on the frame and is vertically arranged. The hydraulic control system and all hydraulic cylinders are respectively mounted on the frame. The hydraulic control system is connected to all hydraulic cylinders. The second heat sealing component is mounted on the piston shaft of all hydraulic cylinders and is arranged opposite to the first heat sealing component.

[0007] In a preferred embodiment, the sealing and bag-making mechanism further includes a cold-sealing unit, which includes a first cold-sealing component, a second cold-sealing component, and at least one cylinder. The first cold-sealing component is mounted on the frame and is vertically arranged. The cylinder is mounted on the frame. The second cold-sealing component is mounted on the piston shaft of all the cylinders and is arranged opposite to the first cold-sealing component.

[0008] A preferred embodiment is that the hydraulic control system includes an oil tank, an air valve connected to an external air source, a pressure gauge, a pressure relief valve, a flow divider, and multiple oil pipes.

[0009] The advantages of this utility model compared to the prior art are that, since a hydraulic control system and a hydraulic cylinder are used to seal the second heat-sealing component and the first heat-sealing component, the heat-sealing pressure can be precisely adjusted, resulting in high-quality and stable finished irregular-shaped bags; and the auxiliary opening and closing structure can quickly complete most of the opening and closing actions, so that the hydraulic cylinder only needs to complete a very small part of the opening and closing actions, thus effectively improving the opening and closing speed. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of one embodiment of the present invention;

[0011] Figure 2 yes Figure 1 A schematic diagram of another angle of the illustrated embodiment;

[0012] Figure 3 This is a schematic diagram of the structure after removing one positioning post in one embodiment of this utility model;

[0013] Figure 4 yes Figure 3 The diagram shown illustrates the structure of the embodiment with one output shaft mounting and positioning plate removed.

[0014] Figure 5 yes Figure 3 Left view of the embodiment shown;

[0015] Figure 6 yes Figure 3 The diagram shows the working state of the push-pull rod and the eccentric wheel in the embodiment shown. Detailed Implementation

[0016] like Figure 1 , 2 As shown, the sealing mechanism of the irregular bag filling and packaging machine in one embodiment of this application includes a frame 1 and a heat sealing unit 2. The heat sealing unit 2 includes a first heat sealing component 201, a second heat sealing component 202, a hydraulic control system 203, and multiple hydraulic cylinders 204. The first heat sealing component 201 is mounted on the frame 1 and is vertically arranged. The hydraulic control system 203 and all the hydraulic cylinders 204 are respectively mounted on the frame 1. The hydraulic control system 203 is connected to all the hydraulic cylinders 204. The second heat sealing component 202 is mounted on the piston shaft of all the hydraulic cylinders 204 and is arranged opposite to the first heat sealing component 201. It should be noted that, for ease of observation of the components, only part of the frame 1 is shown in the figure, and other parts are omitted.

[0017] like Figure 1 , 2As shown, in one optional embodiment of this application, the hydraulic control system 203 includes an oil tank 2031, an air valve 2032 connected to an external air source, a pressure gauge 2033, a pressure relief valve 2034, a flow divider 2035, and multiple oil pipes 2036. In this embodiment, there are two hydraulic cylinders 204. The air valve 2032 sends high-pressure air from the external air source into the oil tank 2031, pressurizes the hydraulic oil, and splits it into two paths through the flow divider 2035, which are then delivered to the two hydraulic cylinders 204 through the oil pipes 2036 respectively. If the second heat-sealing assembly 202 is subjected to excessive pressure, the pressure relief valve 2034 will release the pressure. The pressure gauge 2033 can be used to observe the pressure value.

[0018] like Figure 3-6 As shown, in an optional embodiment of this application, the heat sealing unit 2 further includes an auxiliary opening and closing structure 205. The auxiliary opening and closing structure 205 includes a driving member 2051, a push-pull rod 2052, a sliding seat 2053, and an eccentric wheel 2054. The frame 1 has a horizontally extending base plate 102. The sliding seat 2053 is slidably disposed on the base plate 102. The driving member 2051 is mounted on the frame 1 and has an output shaft 20511. The eccentric wheel 2054 is mounted on the output shaft 20511. The push-pull rod 2052 has a driving hole 20521 and a push-pull end 20522. The driving hole 20521 is sleeved on the eccentric wheel 2054. The push-pull end 20522 is rotatably mounted on the rear side of the sliding seat 2053. All hydraulic cylinders 204 are respectively mounted on the front side of the sliding seat 2053. In this embodiment, the auxiliary opening and closing structure 205 completes most of the opening and closing actions, while the hydraulic cylinder 204 only needs to complete a very small portion of the opening and closing actions, which can effectively improve the opening and closing speed.

[0019] like Figure 3-5 As shown, in one optional embodiment of this application, the drive unit 2051 includes a servo motor 20512 and a gearbox 20513. The servo motor 20512 and the gearbox 20513 are respectively mounted on the frame 1. The servo motor 20512 is connected to the gearbox 20513. The eccentric wheel 2054 is mounted on the output shaft 20511 of the gearbox 20513.

[0020] like Figure 4 As shown, in one optional embodiment of this application, the base plate 102 of the frame 1 is equipped with at least one vertically erected positioning post 103. The positioning post 103 has a positioning hole (not visible in the figure). The second heat-sealing assembly 202 is equipped with multiple horizontally extending guide rods 2021. The sliding seat 2053 has multiple through holes 20531. The number of guide rods 2021, through holes 20531, and positioning holes are the same and correspond one-to-one. Each guide rod 2021 passes through the corresponding through hole 20531 and is inserted into the corresponding positioning hole in sequence. In this embodiment, the number of positioning posts 103 is two.

[0021] like Figure 3 As shown, in one alternative embodiment of this application, the base plate 102 of the frame 1 is equipped with two output shaft mounting and positioning plates 101, and the output shaft 20511 is rotatably mounted on the two output shaft mounting and positioning plates 101.

[0022] like Figure 1 , 2 As shown, in an optional embodiment of this application, the sealing and bag-making mechanism further includes a cold-sealing unit 3. The cold-sealing unit 3 includes a first cold-sealing component 301, a second cold-sealing component 302, and a cylinder 303. The first cold-sealing component 301 is mounted on the frame 1 and is arranged vertically. The cylinders 303 are respectively mounted on the frame 1. The second cold-sealing component 302 is mounted on the piston shaft of all the cylinders 303 and is arranged opposite to the first cold-sealing component 301.

[0023] The following is combined Figure 1 , 2 The working process of this embodiment is described below:

[0024] During heat sealing, the hydraulic control system 203 delivers oil to all hydraulic cylinders 204, causing all hydraulic cylinders 204 to drive the second heat sealing assembly 202 toward the first heat sealing assembly 201, and the mold closes to heat seal the film 4.

[0025] During cold sealing, all cylinders 303 drive the second cold sealing component 302 to move toward the first cold sealing component 301, and the mold closes to cold seal the film 4.

[0026] Because the sealing of the second heat-sealing component 202 and the first heat-sealing component 201 is achieved by using a hydraulic control system 203 and a hydraulic cylinder 204, the heat-sealing pressure can be precisely adjusted regardless of whether it is too high or too low. Therefore, the finished irregularly shaped bags produced are of good quality and stable.

[0027] Figure 3-6 Implementation examples and Figure 1 , 2 Compared to the previous embodiment, since the auxiliary opening and closing structure 205 completes most of the opening and closing actions, the hydraulic cylinder 204 only needs to complete a very small part of the opening and closing actions, thus effectively improving the opening and closing speed.

[0028] Furthermore, it should be noted that the names of the various parts of the specific embodiments described in this specification may differ. All equivalent or simple variations made to the structure, features, and principles described in this utility model patent concept are included within the protection scope of this utility model patent. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, as long as they do not deviate from the structure of this utility model or exceed the scope defined in these claims, they should all fall within the protection scope of this utility model.

Claims

1. A sealing mechanism for a shaped bag filling and packaging machine, comprising a frame and a heat sealing unit, characterized in that: The heat sealing unit includes a first heat sealing assembly, a second heat sealing assembly, a hydraulic control system, and at least one hydraulic cylinder. The first heat sealing assembly is mounted on the frame and is vertically arranged. The hydraulic control system and all hydraulic cylinders are respectively mounted on the frame. The hydraulic control system is connected to all hydraulic cylinders. The second heat sealing assembly is mounted on the piston shaft of all hydraulic cylinders and is arranged opposite to the first heat sealing assembly.

2. The sealing mechanism of the irregular bag filling and packaging machine as described in claim 1, characterized in that: The heat sealing unit also includes an auxiliary opening and closing structure, which includes a driving component, a push-pull rod, a sliding seat, and an eccentric wheel. The frame has a horizontally extending base plate, and the sliding seat is slidably mounted on the base plate. The driving component is mounted on the frame and has an output shaft. The eccentric wheel is mounted on the output shaft. The push-pull rod has a driving hole and a push-pull end. The driving hole is fitted onto the eccentric wheel, and the push-pull end is rotatably mounted on the rear side of the sliding seat. All hydraulic cylinders are respectively mounted on the front side of the sliding seat.

3. The sealing mechanism of the irregular bag filling and packaging machine as described in claim 2, characterized in that: The driving component includes a servo motor and a gearbox. The servo motor and gearbox are respectively mounted on the frame. The servo motor is connected to the gearbox, and the eccentric wheel is mounted on the output shaft of the gearbox.

4. The sealing mechanism of the irregular bag filling and packaging machine as described in claim 2, characterized in that: The base plate of the frame is equipped with at least one vertically erected positioning post with a positioning hole. The second heat sealing assembly is equipped with multiple horizontally extending guide rods. The sliding seat has multiple through holes. The number of guide rods, through holes, and positioning holes are the same and correspond one-to-one. Each guide rod passes through the corresponding through hole and is inserted into the corresponding positioning hole in sequence.

5. The sealing mechanism of the irregularly shaped bag filling and packaging machine as described in any one of claims 1-4, characterized in that: The sealing and bag-making mechanism further includes a cold-sealing unit, which includes a first cold-sealing component, a second cold-sealing component, and at least one cylinder. The first cold-sealing component is mounted on the frame and is vertically arranged. The cylinder is mounted on the frame. The second cold-sealing component is mounted on the piston shaft of all the cylinders and is arranged opposite to the first cold-sealing component.

6. The sealing mechanism of the irregularly shaped bag filling and packaging machine as described in any one of claims 1-4, characterized in that: The hydraulic control system includes an oil tank, an air valve connected to an external air source, a pressure gauge, a pressure relief valve, a flow divider, and multiple oil pipes.

Images