Film feeding mechanism for cold stretch film packaging machine

Abstract

The utility model discloses a film feeding mechanism for a cold stretch film packaging machine, which comprises a main body rack, a film supporting assembly is arranged at one end of the main body rack, a sealing and cutting assembly and a film supporting assembly are arranged at the other end of the main body rack, the sealing and cutting assembly comprises an upper sealing and cutting piece, a lower sealing and cutting piece and a heating wire, and the heating wire is arranged on the upper sealing and cutting piece. The upper sealing and cutting part is arranged on the side, away from the film feeding assembly, of the body rack. The lower sealing and cutting part is correspondingly arranged at the lower end of the upper sealing and cutting part and is mounted on the main body rack; the heating wire is arranged on the lower sealing and cutting piece; the film sealing and cutting device is simple in structure and reasonable in design, after film feeding is completed through the film feeding assembly, the film is expanded through the film expanding assembly and then placed, finally sealing and cutting are completed through the sealing and cutting assembly, operation is stable, sealing is more attractive and firmer, and films of different materials and thicknesses can be sealed and cut.

Description

Technical Field

[0001] The utility model relates to the technical field of film feeding mechanisms, in particular to a film feeding mechanism for a cold stretch film packaging machine. Background Art

[0002] In packaging technology, a layer of film is wrapped on the outside of the product box, and a film feeding mechanism is used for packaging during coating.

[0003] Deficiencies of existing technology:

[0004] At present, when heat-sealing, the traditional film feeding mechanism is prone to cracks at the heat-sealing mouth, the weld is not beautiful, and the operation is unstable. Utility Model Content

[0005] The purpose of the present utility model is to provide a film feeding mechanism for a cold stretch film packaging machine to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a film feeding mechanism for a cold stretch film packaging machine, comprising a main frame, a film supporting assembly being provided at one end of the main frame, and a sealing and cutting assembly and a film supporting assembly being provided at the other end of the main frame, wherein the sealing and cutting assembly comprises:

[0007] an upper sealing and cutting member, the upper sealing and cutting member being arranged on a side of the main frame away from the film feeding assembly;

[0008] A lower sealing and cutting member, the lower sealing and cutting member is correspondingly arranged at the lower end of the upper sealing and cutting member and mounted on the main frame;

[0009] A heating wire is provided on the lower sealing member.

[0010] Preferably, the membrane support assembly includes:

[0011] a first movable shaft, the first movable shaft being connected to the main frame via a slider;

[0012] a second movable shaft, the second movable shaft being arranged on the main frame by being connected with a fixed block;

[0013] a film casing frame, the film casing frame being connected to the first movable shaft and the second movable shaft respectively;

[0014] Film feeding rollers, the first movable shaft and the second movable shaft are respectively provided with the film feeding rollers;

[0015] A servo reducer is provided at one end of the first movable shaft and the second movable shaft.

[0016] Preferably, the upper sealing and cutting part includes an upper cutter cylinder, an upper crossbeam and an upper cutter, and the upper cutter cylinders are respectively arranged on both sides of the main frame, the two ends of the upper crossbeam are respectively connected to the upper cutter cylinder and arranged on the main frame, and the upper cutter is arranged on the upper crossbeam and controlled by the upper cutter cylinder; the lower sealing and cutting part includes a lower cutter cylinder, a lower crossbeam and a lower cutter, and the lower cutter cylinders are respectively arranged on the bottom of both sides of the main frame, the two ends of the lower crossbeam are respectively connected to the lower cutter cylinder and arranged on the main frame, and the lower cutter is arranged on the lower crossbeam and controlled by the lower cutter cylinder.

[0017] Preferably, the film delivery assembly includes:

[0018] A fixed shaft, the fixed shaft being arranged on the main frame;

[0019] A film roll is fixed to the fixed shaft.

[0020] Preferably, the lower crossbeam is provided with a lower cutter fixing seat and a cutter rodless cylinder.

[0021] Preferably, the film frame includes an upper adjustment plate, a lower adjustment plate, a film guide bracket, a sealing and cutting guide rod and an adjustment sleeve, the sealing and cutting guide rod is connected to the film guide bracket, the film guide bracket is respectively arranged on the upper adjustment plate and the lower adjustment plate, and the adjustment sleeve is arranged between the film guide brackets.

[0022] Preferably, friction plates are provided on both sides of the sealing and cutting guide rod.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] 1. A film feeding mechanism for a cold stretch film packaging machine is provided with a sealing and cutting assembly, which includes an upper sealing and cutting part, a lower sealing and cutting part and a heating wire. The upper sealing and cutting part includes an upper cutter cylinder, an upper crossbeam and an upper cutter, and the lower sealing and cutting part includes a lower cutter cylinder, a lower crossbeam and a lower cutter. The upper cutter cylinder and the lower cutter cylinder control the upper crossbeam and the lower crossbeam to move relative to each other, that is, drive the upper cutter and the lower cutter to move relative to each other and cut the film. After cutting, the heating wire is heated by a controller to heat-seal the incision. The overall sealing and cutting assembly can heat-seal the packaging bag on one side or both sides, and only needs to heat-seal on the film receiving side. At the same time, the cutter rodless cylinder drives the lower cutter to cut the film in the middle. The operation is stable, the sealing is more beautiful and firm, and it can seal and cut films of different materials and thicknesses.

[0025] 2. The film feeding mechanism for a cold stretch film packaging machine is provided with a film supporting assembly, which includes a first movable shaft, a second movable shaft, a film frame, a film feeding roller and a servo reducer. The first movable shaft is installed on the main frame by connecting a slider, and the second movable shaft is installed on the main frame by connecting a fixed block. The film frame is respectively connected to the first movable shaft and the second movable shaft, and the first movable shaft and the second movable shaft are respectively provided with film feeding rollers. The servo reducer is provided at one end of the first movable shaft and the second movable shaft. The overall film supporting assembly runs stably and is not easy to deviate, and the size of the film frame can be adjusted to make the film feeding more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0027] Figure 2 It is a schematic diagram of the overall structure of the utility model;

[0028] Figure 3 This is a schematic diagram of the membrane support assembly of the present utility model;

[0029] Figure 4 This is a schematic diagram of the film frame of the present utility model;

[0030] Figure 5 This is a schematic cross-sectional view of the film frame of the present invention;

[0031] In the figure: 110, main frame; 121, upper sealing and cutting part; 1211, upper cutter cylinder; 1212, upper crossbeam; 1213, upper cutter; 122, lower sealing and cutting part; 1221, lower cutter cylinder; 1222, lower crossbeam; 1223, lower cutter; 123, heating wire; 131, first movable shaft; 132, slider; 133, second movable shaft; 134, fixed block; 135, film frame; 136, film feeding roller; 137, servo reducer; 141, fixed shaft; 142, film roll; 150, lower cutter fixing seat; 160, cutter rodless cylinder; 1351, upper adjustment plate; 1352, lower adjustment plate; 1353, film guide bracket; 1354, sealing and cutting guide rod; 1355, adjustment sleeve; 170, friction plate. DETAILED DESCRIPTION

[0032] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0033] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0034] In the description of this patent, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "disposed" should be understood broadly. For example, they can refer to fixed connection or disposition, detachable connection or disposition, or integrated connection or disposition. Those skilled in the art will understand the specific meanings of the above terms in this patent based on the specific circumstances.

[0035] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "several" means two or more, unless otherwise specifically defined.

[0036] Example

[0037] See also Figure 1-5As shown, the utility model provides a technical solution of a film feeding mechanism for a cold stretch film packaging machine: it includes a main frame 110, a film supporting assembly is installed at one end of the main frame 110, and a sealing and cutting assembly and a film supporting assembly are installed at the other end of the main frame 110. The sealing and cutting assembly includes an upper sealing and cutting piece 121, a lower sealing and cutting piece 122 and a heating wire 123. The upper sealing and cutting piece 121 is installed on the side of the main frame 110 away from the film feeding assembly. The upper sealing and cutting piece 121 includes an upper cutter cylinder 1211, an upper crossbeam 1212 and an upper cutter 1213. The upper cutter cylinder 1211 is respectively installed on both sides of the main frame 110, and both ends of the upper crossbeam 1212 are respectively connected to the upper cutter cylinder 1211 and installed on the main frame 110. The upper cutter 1213 is installed on the upper crossbeam 1212 and is The upper cutter cylinder 1211 is controlled; the lower sealing and cutting part 122 includes a lower cutter cylinder 1221, a lower crossbeam 1222 and a lower cutter 1223. The lower cutter cylinders 1221 are respectively installed at the bottom of both sides of the main frame 110, and the two ends of the lower crossbeam 1222 are respectively connected to the lower cutter cylinder 1221 and are set on the main frame 110. The lower cutter 1223 is installed on the lower crossbeam 1222 and controlled by the lower cutter cylinder 1221. The lower crossbeam 1222 is provided with a lower cutter fixing seat 150 and a cutter rodless cylinder 160. When in use, after the film is fed by the film feeding assembly, the film is stretched and then released by the film supporting assembly, and finally the sealing and cutting are completed by the sealing and cutting assembly. The operation is stable, the seal is more beautiful and firm, and it can seal and cut films of different materials and thicknesses.

[0038] Furthermore, the film feeding assembly includes a fixed shaft 141 and a film roll 142. The fixed shaft 141 is installed on the main frame 110. The fixed shaft 141 is fixed with an aluminum air-expansion shaft, and there are scales on both sides of the aluminum air-expansion shaft, which reduces the weight of manual handling and facilitates manual installation. The film roll 142 is fixed to the fixed shaft 141; the film supporting assembly includes a first movable shaft 131, a second movable shaft 133, a film frame 135, a film feeding roller 136 and a servo reducer 137. The first movable shaft 131 is installed on the main frame 110 by connecting a slider 132, and the second movable shaft 133 is connected by The fixing block 134 is installed on the main frame 110, and the film frame 135 is connected to the first movable shaft 131 and the second movable shaft 133 respectively. The first movable shaft 131 and the second movable shaft 133 are respectively provided with a film feeding roller 136. The servo reducer 137 is provided at one end of the first movable shaft 131 and the second movable shaft 133; the film frame 135 includes an upper adjustment plate 1351, a lower adjustment plate 1352, a film guide bracket 1353, a sealing and cutting guide rod 1354 and an adjustment sleeve 1355. The sealing and cutting guide rod 1354 is connected to the film guide bracket 1353, and the film guide bracket 1353 is respectively provided on the upper and lower ends of the film guide bracket 1353. The adjusting plate 1351 and the lower adjusting plate 1352 and the adjusting sleeve 1355 are arranged between the film guide bracket 1353; when in use, the film roll 142 is manually fixed to the fixed shaft 141, and the packaging film is installed into the film feeding roller through the film guide roller according to the film threading diagram, and finally the film pressing counterweight belt of the film roll 142 is pressed on the surface of the film roll 142 to complete the film threading; then the film is stretched out by the film frame 135 and then the film is placed, and the upper adjusting plate 1351 and the lower adjusting plate 1352 are adjusted up and down to stretch the film, and the sealing and cutting guide rod 1354 sends the film into the sealing and cutting assembly, and the entire film supporting assembly is convenient for adjusting the film frame of the sleeve 1355. size, making it more stable when feeding the film and not prone to deviation; finally, the upper cutter cylinder 1211 and the lower cutter cylinder 1221 control the upper crossbeam 1212 and the lower crossbeam 1222 to move relative to each other, that is, drive the upper cutter 1213 and the lower cutter 1223 to move relative to each other and cut the film. After cutting, the heating wire 123 is heated by controlling the controller to heat-seal the incision. The overall sealing and cutting assembly can heat-seal the packaging bag on one side or both sides, and only needs to heat-seal on the film receiving side. At the same time, the cutter rodless cylinder 160 drives the lower cutter 1223 to cut the middle film, the heat sealing effect is enhanced and the weld is firm and beautiful.

[0039] Furthermore, friction plates 170 are installed on both sides of the sealing and cutting guide rod 1354 to increase wear resistance, while also strengthening the elasticity of the return spring of the sealing and cutting guide rod 1354, making the sealing and cutting guide rod 1354 more stable during film feeding.

[0040] The working principle of this utility model is as follows:

[0041] When the film feeding mechanism of the cold stretch film packaging machine of this embodiment is in use, the film roll 142 is manually fixed to the fixed shaft 141, and the packaging film is installed into the film feeding roller through the film guide roller according to the film threading diagram. Finally, the film pressing counterweight belt of the film roll 142 is pressed on the surface of the film roll 142 to complete the film threading; then the film is stretched out by the film frame 135 and then the film is placed, and the upper adjusting plate 1351 and the lower adjusting plate 1352 are adjusted up and down to stretch the film, and the sealing and cutting guide rod 1354 sends the film into the sealing and cutting assembly. The entire film supporting assembly is convenient for adjusting the size of the film frame 1355, so that the film can be fed more easily. It is more stable and not easy to deviate; finally, the upper cutter cylinder 1211 and the lower cutter cylinder 1221 control the upper crossbeam 1212 and the lower crossbeam 1222 to move relative to each other, that is, drive the upper cutter 1213 and the lower cutter 1223 to move relative to each other and cut the film. After cutting, the heating wire 123 is heated by a controller to heat-seal the incision. The overall sealing and cutting assembly can heat-seal the packaging bag on one side or both sides, and only needs to heat-seal on the film receiving side. At the same time, the cutter rodless cylinder 160 drives the lower cutter 1223 to cut the middle film, the heat sealing effect is enhanced and the weld is firm and beautiful.

[0042] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A film feeding mechanism for a cold stretch film packaging machine, comprising a main frame (110), characterized in that: A film supporting assembly is provided at one end of the main frame (110), and a sealing and cutting assembly and a film supporting assembly are provided at the other end of the main frame (110), wherein the sealing and cutting assembly comprises: An upper sealing and cutting member (121), the upper sealing and cutting member (121) being arranged on a side of the main frame (110) away from the film feeding assembly; A lower sealing and cutting member (122), the lower sealing and cutting member (122) being correspondingly arranged at the lower end of the upper sealing and cutting member (121) and mounted on the main frame (110); A heating wire (123), wherein the heating wire (123) is arranged on the lower sealing member (122).

2. The film feeding mechanism for a cold stretch film packaging machine according to claim 1, characterized in that: The membrane support assembly comprises: a first movable shaft (131), the first movable shaft (131) being arranged on the main frame (110) by being connected with a slider (132); a second movable shaft (133), the second movable shaft (133) being arranged on the main frame (110) by being connected with a fixed block (134); A film casing frame (135), wherein the film casing frame (135) is respectively connected to the first movable shaft (131) and the second movable shaft (133); a film-feeding roller (136), wherein the first movable shaft (131) and the second movable shaft (133) are respectively provided with the film-feeding roller (136); A servo reducer (137) is provided at one end of the first movable shaft (131) and the second movable shaft (133).

3. The film feeding mechanism for a cold stretch film packaging machine according to claim 1, characterized in that: The upper sealing and cutting member (121) comprises an upper cutter cylinder (1211), an upper crossbeam (1212) and an upper cutter (1213); the upper cutter cylinder (1211) is respectively arranged on both sides of the main frame (110); both ends of the upper crossbeam (1212) are respectively connected to the upper cutter cylinder (1211) and arranged on the main frame (110); the upper cutter (1213) is arranged on the upper crossbeam (1212) and is controlled by the upper cutter cylinder (1211); The lower sealing and cutting component (122) comprises a lower cutter cylinder (1221), a lower crossbeam (1222) and a lower cutter (1223). The lower cutter cylinder (1221) is respectively arranged at the bottom of both sides of the main frame (110). Both ends of the lower crossbeam (1222) are respectively connected to the lower cutter cylinder (1221) and arranged on the main frame (110). The lower cutter (1223) is arranged on the lower crossbeam (1222) and is controlled by the lower cutter cylinder (1221).

4. The film feeding mechanism for a cold stretch film packaging machine according to claim 1, characterized in that: The film delivery assembly comprises: A fixed shaft (141), the fixed shaft (141) being arranged on the main frame (110); A film roll (142), wherein the film roll (142) is fixed to the fixed shaft (141).

5. The film feeding mechanism for a cold stretch film packaging machine according to claim 3, characterized in that: The lower crossbeam (1222) is provided with a lower cutter fixing seat (150) and a cutter rodless cylinder (160).

6. The film feeding mechanism for a cold stretch film packaging machine according to claim 2, characterized in that: The film frame (135) includes an upper adjustment plate (1351), a lower adjustment plate (1352), a film guide bracket (1353), a sealing and cutting guide rod (1354) and an adjustment sleeve (1355), wherein the sealing and cutting guide rod (1354) is connected to the film guide bracket (1353), and the film guide bracket (1353) is respectively arranged on the upper adjustment plate (1351) and the lower adjustment plate (1352), and the adjustment sleeve (1355) is arranged between the film guide brackets (1353).

7. The film feeding mechanism for a cold stretch film packaging machine according to claim 6, characterized in that: Friction plates (170) are provided on both sides of the sealing and cutting guide rod (1354).

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