Heat sealing film device with good heat sealing effect

Abstract

The utility model relates to the field of packaging machinery, in particular to a film heat-sealing device with a good heat-sealing effect, which is characterized by comprising a preheating component and a rolling heat-sealing mechanism which are sequentially arranged, and at least two hot rolling gaps for hot rolling of packaging films are arranged on the rolling heat-sealing mechanism. The packaging film edge sealing device not only can quickly and stably achieve edge sealing of a packaging film, but also can guarantee that the edge sealing is very tight, can greatly reduce the probability that the packaging film is thermally broken, and has very high reliability and applicability.

Description

Technical Field

[0001] The utility model relates to the field of packaging machinery, in particular to a heat-sealing film device. Background Art

[0002] At present, in order to improve the efficiency of heat-sealing film packaging, heat-sealing film packaging equipment is usually used to achieve this. Most of the existing heat-sealing film packaging equipment use a film placing device, a folding device, an edge sealing device, a bagging device, a sealing device, and a cutting device in sequence to use the rolled packaging film to complete the packaging of related products. The folding device folds the two ends of the horizontally inserted packaging film upward in the length direction, and the edge sealing device heat-presses the folded packaging film in the length direction in sequence to form a plurality of vertical sealing parts, so that a packaging space can be formed between adjacent vertical sealing parts, and the packaging space is used to contain related products.

[0003] Among them, most of the existing edge sealing devices use two vertical heat-pressing rollers to form a vertical seal on the packaging film. Since the operating speed of the existing heat-sealing film packaging equipment is mostly relatively fast (packing more than 100 packages per minute, and some even reach 800 packages per minute), the time for the packaging film to pass through the edge sealing device is very short, which will result in a very short time for the heat of the edge sealing device to act on the packaging film. In addition, the edge sealing device can only perform a heat-pressing effect on one part of the packaging film once, which makes it very easy to cause loose packaging.

[0004] Therefore, there is a method to improve the heat seal tightness by increasing the heating temperature of the vertical heat pressing roller. However, since the packaging film is generally thin and the heat resistance of the packaging film is generally limited, it is difficult to control the heating temperature of the vertical heat pressing roller. In the actual packaging process, the packaging film is easily broken by heat.

[0005] Therefore, it is very necessary to design a heat-sealing film device with good heat-sealing effect to solve the above technical problems. Utility Model Content

[0006] The purpose of the utility model is to solve the above-mentioned problems and shortcomings and to provide a heat-sealing film device with good heat-sealing effect. The heat-sealing film device can not only facilitate the rapid and stable edge sealing of the packaging film, but also ensure that the edge sealing is very tight and can greatly reduce the probability of heat breaking of the packaging film. The utility model has very high reliability and applicability.

[0007] The technical solution of the utility model is achieved in this way:

[0008] A heat-sealing film device with good heat-sealing effect is characterized in that it comprises a preheating component and a rolling heat-sealing mechanism arranged in sequence, wherein the rolling heat-sealing mechanism is provided with at least two hot rolling gaps for hot rolling packaging films.

[0009] Preferably, the heat-sealing film device with good heat-sealing effect further comprises a folding body for folding the packaging film, wherein the folding body is located between the preheating component and the roller heat-sealing mechanism, or the preheating component is located between the folding body and the roller heat-sealing mechanism.

[0010] Preferably, the folding body is a folding plate body, which is arranged horizontally, and the middle part of the folding body is gradually recessed from the end away from the roller heat sealing mechanism to the end close to the roller heat sealing mechanism to form a V-shaped folding groove with gradually increasing depth and gradually decreasing width.

[0011] Preferably, the roller heat sealing mechanism comprises at least two heat sealing roller groups arranged side by side; the heat sealing roller group comprises two vertical heat sealing rollers arranged side by side horizontally, and a heat rolling gap is formed between the two vertical heat sealing rollers.

[0012] Preferably, the roller heat sealing mechanism further comprises two positioning plates arranged in parallel up and down, and the upper and lower ends of the vertical heat sealing roller are rotatably embedded in the two positioning plates respectively.

[0013] Preferably, the positioning plate is respectively provided with a positioning hole and a guide hole groove, and the guiding direction of the guide hole groove is toward the positioning hole, a positioning slide is slidably mounted on the guide hole groove, and the positioning slide can make a reciprocating motion away from and close to the positioning hole, at least one spring is arranged on the positioning plate, and the spring elastically acts on the positioning slide, and the positioning slide is pushed toward the hole wall of the guide hole groove close to the positioning hole through the elastic action of the spring; the upper and lower ends of one of the vertical heat sealing rollers in the heat sealing roller group can be rotatably embedded in the positioning holes on the two positioning plates, and the upper and lower ends of the other vertical heat sealing roller in the heat sealing roller group can be rotatably embedded on the positioning slides on the two positioning plates.

[0014] Preferably, an adjusting screw is threaded on the positioning plate, and the threaded end of the adjusting screw is inserted into the guide hole groove, and the threaded end of the adjusting screw is also facing the positioning hole. A pressing shaft with a large end and a small end is mounted on the adjusting screw in the guide hole groove, and the small end of the pressing shaft is facing the positioning hole. One end of the spring is embedded in the positioning slide, and the other end of the spring is mounted on the small end of the pressing shaft, and the other end of the spring is elastically pressed against the large end face of the pressing shaft.

[0015] Preferably, the two vertical heat sealing rollers of the heat sealing roller group are connected via a gear group, one of the vertical heat sealing rollers of adjacent heat sealing roller groups is connected via a chain transmission, and one of the vertical heat sealing rollers of one of the heat sealing roller groups is driven by a drive motor.

[0016] Preferably, a plurality of vertically arranged positioning columns are provided between the two positioning plates.

[0017] Preferably, an inner guiding block is arranged between adjacent hot sealing roller groups, and an inner guiding groove for guiding the packaging film is formed on the inner guiding block; an outer guiding block is arranged on one side of the output end of the counter-rolling hot sealing mechanism, and an outer guiding groove for guiding the packaging film is formed on the outer guiding block.

[0018] The beneficial effects of the present invention: On this heat-sealing film device, by sequentially arranging a preheating component and a counter-rolling hot sealing mechanism, the preheating component can preheat the packaging film before the counter-rolling hot sealing mechanism acts on the packaging film, which can make the hot rolling effect of the counter-rolling hot sealing mechanism on the packaging film better. In addition, at least two hot rolling gaps are arranged on the counter-rolling hot sealing mechanism, so that at least one place of the packaging film can bear hot pressing twice. This can not only facilitate the rapid and stable sealing of the packaging film, but also ensure that the sealing edge is very tight, and there is no need to set the hot rolling temperature too high, which can greatly reduce the probability of the packaging film being thermally broken. This heat-sealing film device has very high reliability and applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of the heat-sealing film device in the present invention.

[0020] Figure 2 It is a schematic structural diagram of the assembled state of the counter-rolling hot sealing mechanism and the folding body in the present invention.

[0021] Figure 3 It is a three-dimensional structural diagram of the counter-rolling hot sealing mechanism in the present invention.

[0022] Figure 4 It is a schematic structural diagram of the counter-rolling hot sealing mechanism in the side view direction of the present invention.

[0023] Figure 5 It is a three-dimensional structural diagram of the folding body in the present invention.

[0024] Figure 6 It is a three-dimensional structural diagram of the positioning plate in the present invention.

[0025] Figure 7 It is a three-dimensional structural diagram of the inner guiding block in the present invention.

[0026] Figure 8 It is a three-dimensional structural diagram of the outer guiding block in the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] As Figures 1 to 4 shown, a heat-sealing film device with good heat-sealing effect according to the present invention includes a preheating component 1 and a counter-rolling hot sealing mechanism 2 arranged in sequence, wherein at least two hot rolling gaps 10 for hot rolling the packaging film are arranged on the counter-rolling hot sealing mechanism 2.

[0028] On this heat-sealing film device, by sequentially arranging a preheating component 1 and a pair-rolling heat-sealing mechanism 2, before the pair-rolling heat-sealing mechanism 2 acts on the packaging film, the preheating component 1 can preheat the packaging film, which can make the heat-rolling effect of the pair-rolling heat-sealing mechanism 2 on the packaging film better. In addition, at least two heat-rolling gaps 10 are provided on the pair-rolling heat-sealing mechanism 2, which can make at least one place of the packaging film withstand heat pressing twice. This can not only facilitate the rapid and stable edge sealing of the packaging film, but also ensure that the edge sealing is very tight, and there is no need to set the heat-rolling temperature too high, which can greatly reduce the probability of the packaging film breaking due to heat. This heat-sealing film device has very high reliability and applicability.

[0029] During the actual manufacturing process, the preheating component 1 adopts electric heating plates arranged in parallel up and down, and a preheating gap for the packaging film to pass through is reserved between the two electric heating plates. Such a preheating component 1 can facilitate the accurate and stable realization of the preheating effect, thereby ensuring very high heat-sealing quality.

[0030] As Figure 1 shown in Figure 2 the heat-sealing film device with good heat-sealing effect further includes a folding body 3 for folding the packaging film in half. The folding body 3 is located between the preheating component 1 and the pair-rolling heat-sealing mechanism 2, or the preheating component 1 is located between the folding body 3 and the pair-rolling heat-sealing mechanism 2. By making the folding body 3 located between the preheating component 1 and the pair-rolling heat-sealing mechanism 2, the packaging film can be preheated before folding, which can not only facilitate the smoothness of the packaging film folding, but also facilitate the accuracy of the packaging film folding, thereby contributing to the improvement of the folding quality of the packaging film. By making the preheating component 1 located between the folding body 3 and the pair-rolling heat-sealing mechanism 2, the normal use requirements can be stably met.

[0031] As Figure 2 shown in Figure 5 the folding body 3 is a folding plate body, the folding body 3 is arranged horizontally, and the middle part of the folding body 3 gradually sinks from the end far away from the pair-rolling heat-sealing mechanism 2 to the end close to the pair-rolling heat-sealing mechanism 2 to form a V-shaped folding groove 31 with gradually increasing depth and gradually decreasing width. This can play a more accurate and stable guiding role for the packaging film, so that the packaging film can be folded together more accurately and stably, and further contribute to the improvement of the reliability of this heat-sealing film device.

[0032] As Figures 1 to 4 shown in

[0033] During the actual manufacturing process, the vertical heat-sealing roller 211 directly adopts the structure of an existing heat-sealing roller, as well as the installation positioning and circuit structure of the existing heat-sealing roller, so as to meet the requirements of actual manufacturing and use.

[0034] As Figures 2 to 4 shown, the pair-rolling heat-sealing mechanism 2 further includes two positioning plates 22 arranged in parallel up and down, and the upper and lower ends of the vertical heat-sealing roller 211 are respectively rotatably installed on the two positioning plates 22. This can not only simply and conveniently position the vertical heat-sealing roller 211, but also ensure that the installation positioning of the vertical heat-sealing roller 211 is relatively stable, thus contributing to further improving the reliability and applicability of the heat-sealing film device.

[0035] As Figure 2 shown, the folding body 3 is connected to the upper positioning plate 22 through a bracket 32, which can conveniently position the folding body 3, so as to ensure that the position of the folding body 3 relative to the pair-rolling heat-sealing mechanism 2 is very accurate and stable, and further facilitate the packaging film to pass through the heat-sealing film device more accurately, which is conducive to further improving the packaging quality.

[0036] As Figure 3 、 Figure 4 and Figure 6 shown, the positioning plates 22 are respectively provided with positioning holes 221 and guide hole grooves 222, and the guiding direction of the guide hole grooves 222 faces the positioning holes 221. A positioning slide seat 223 is slidably clamped on the guide hole grooves 222, and the positioning slide seat 223 can make reciprocating movements away from and close to the positioning holes 221. At least one spring 224 is arranged on the positioning plates 22, and the spring 224 elastically acts on the positioning slide seat 223, and the positioning slide seat 223 is pushed against the hole wall of the guide hole grooves 222 close to the positioning holes 221 through the elastic action of the spring 224; the upper and lower ends of one of the vertical heat-sealing rollers 211 in the heat-sealing roller group 21 are rotatably installed in the positioning holes 221 on the two positioning plates 22, and the upper and lower ends of the other vertical heat-sealing roller 211 in the heat-sealing roller group 21 are rotatably installed on the positioning slide seats 223 on the two positioning plates 22. In this way, in the heat-sealing roller group 21, one vertical heat-sealing roller 211 can make reciprocating movements away from and close to the other vertical heat-sealing roller 211, which can achieve the effect of flexible pair-rolling, thus avoiding the situation of damaging the packaging film due to excessive pressure, and further facilitating the improvement of the packaging quality.

[0037] As Figure 3 and Figure 4As shown, each heat sealing roller group 21 is arranged between two positioning plates 22, and one of the vertical heat sealing rollers 211 of each heat sealing roller group 21 can elastically reciprocate relative to the other vertical heat sealing roller 211, that is, a number of positioning slides 223 equal to the number of the heat sealing roller groups 21 is arranged on the positioning plate 22, and each positioning slide 223 is elastically limited by a spring 224, so as to meet the actual manufacturing and use requirements.

[0038] like Figure 2 , Figure 3 and Figure 6 As shown, the positioning plate 22 is screwed with an adjusting screw 225, and the threaded end of the adjusting screw 225 is inserted into the guide hole groove 222, and the threaded end of the adjusting screw 225 is also directed toward the positioning hole 221. A pressing shaft 226 with a large end and a small end is mounted on the adjusting screw 225 in the guide hole groove 222, and the small end of the pressing shaft 226 is directed toward the positioning hole 221. One end of the spring 224 is embedded in the positioning slide 223, and the other end of the spring 224 is mounted on the small end of the pressing shaft 226, and the other end of the spring 224 is elastically pressed against the large end face of the pressing shaft 226. In this way, the pressure of the spring 224 on the positioning slide 223 can be adjusted by rotating the adjusting screw 225, so that the pressure of the vertical heat sealing roller 211 on the packaging film can be adjusted, which can facilitate the appropriate heat pressing effect on different packaging films, thereby helping to further improve the applicability of the heat sealing film device.

[0039] like Figure 3 As shown, the two vertical heat sealing rollers 211 of the heat sealing roller group 21 are connected by a gear group 23, and one of the vertical heat sealing rollers 211 of the adjacent heat sealing roller groups 21 is connected by a chain 24, and one of the vertical heat sealing rollers 211 of one heat sealing roller group 21 is driven by a driving motor 25. In this way, the vertical heat sealing rollers 211 of all the heat sealing roller groups 21 can be accurately driven to rotate by one driving motor 25, and this can ensure that the rotation of each vertical heat sealing roller 211 is very accurate and stable, thereby helping to further improve the reliability and applicability of the heat sealing film device.

[0040] like Figure 3 As shown, a tensioning wheel 241 acts on the chain 24, so that the power transmission between adjacent heat-sealing roller groups 21 can be more accurate and stable.

[0041] like Figure 3 As shown, the driving motor 25 and the corresponding vertical heat-sealing roller 211 are also connected via a chain transmission, which can ensure that the power output of the driving motor 25 is very stable and accurate.

[0042] like Figure 3As shown, a number of vertically arranged positioning columns 26 are provided between the two positioning plates 22. This can conveniently and stably limit the two positioning plates 22 together, so that the positioning effect of the two positioning plates 22 on each heat-sealing roller group 21 is more stable and reliable.

[0043] As Figure 2 shown, an inner guiding block 27 is provided between adjacent heat-sealing roller groups 21, and an inner guiding groove 271 for guiding the packaging film is formed on the inner guiding block 27. This can guide and limit the packaging film, so as to facilitate the accurate and stable passing of the packaging film through each heat-sealing roller group 21, and further facilitate the accurate and stable heat-sealing effect of each heat-sealing roller group 21 on the packaging film, which helps to further improve the heat-sealing quality of the heat-sealing film device. Figure 7

[0044] As Figure 2 shown, an outer guiding block 28 is arranged on one side of the output end of the counter-rotating heat-sealing mechanism 2, and an outer guiding groove 281 for guiding the packaging film is formed on the outer guiding block 28. This can not only stably output the packaging film from the output end of the counter-rotating heat-sealing mechanism 2, but also facilitate the accurate and stable entry of the packaging film into the next process, thus helping to improve the packaging quality. Figure 8

[0045] The above embodiments are the preferred embodiments of the present invention. All structures similar to the present invention and equivalent changes made thereto shall fall within the protection scope of the present invention.​​

Claims

1. A heat-sealing film device with good heat-sealing effect, characterized in that: It comprises a preheating component (1) and a rolling heat sealing mechanism (2) which are arranged in sequence, wherein the rolling heat sealing mechanism (2) is provided with at least two hot rolling gaps (10) for hot rolling packaging films.

2. The heat-sealing film device with good heat-sealing effect according to claim 1, characterized in that: It also comprises a folding body (3) for folding the packaging film, wherein the folding body (3) is located between the preheating component (1) and the roll-to-roll heat-sealing mechanism (2), or the preheating component (1) is located between the folding body (3) and the roll-to-roll heat-sealing mechanism (2).

3. The heat-sealing film device with good heat-sealing effect according to claim 2, characterized in that: The folding body (3) is a folding plate body, and the folding body (3) is arranged horizontally, and the middle part of the folding body (3) is gradually recessed downward from the end away from the rolling heat sealing mechanism (2) to the end close to the rolling heat sealing mechanism (2), forming a V-shaped folding groove (31) with a gradually increasing depth and a gradually decreasing width.

4. The heat-sealing film device with good heat-sealing effect according to claim 1, characterized in that: The roller heat-sealing mechanism (2) comprises at least two heat-sealing roller groups (21) arranged side by side; the heat-sealing roller group (21) comprises two vertical heat-sealing rollers (211) arranged side by side horizontally, and a heat-rolling gap (10) is formed between the two vertical heat-sealing rollers (211).

5. The heat-sealing film device with good heat-sealing effect according to claim 4, characterized in that: The roller heat sealing mechanism (2) further comprises two positioning plates (22) arranged in parallel up and down, and the upper and lower ends of the vertical heat sealing roller (211) are respectively rotatably embedded in the two positioning plates (22).

6. The heat-sealing film device with good heat-sealing effect according to claim 5, characterized in that: The positioning plate (22) is provided with a positioning hole (221) and a guide hole groove (222), and the guiding direction of the guide hole groove (222) is directed toward the positioning hole (221). A positioning slide seat (223) is slidably mounted on the guide hole groove (222), and the positioning slide seat (223) can make a reciprocating motion away from and close to the positioning hole (221). At least one spring (224) is provided on the positioning plate (22), and the spring (224) elastically acts on the positioning slide seat (223). , and the positioning slide (223) is pushed toward the hole wall of the guide hole groove (222) close to the positioning hole (221) through the elastic action of the spring (224); the upper and lower ends of one of the vertical heat sealing rollers (211) in the heat sealing roller group (21) are rotatably embedded in the positioning holes (221) on the two positioning plates (22), and the upper and lower ends of the other vertical heat sealing roller (211) in the heat sealing roller group (21) are rotatably embedded in the positioning slide (223) on the two positioning plates (22).

7. The heat-sealing film device with good heat-sealing effect according to claim 6, characterized in that: The positioning plate (22) is threaded with an adjusting screw (225), and the threaded end of the adjusting screw (225) is inserted into the guide hole groove (222), and the threaded end of the adjusting screw (225) is directed toward the positioning hole (221). A pressing shaft (226) having a large end and a small end is mounted on the adjusting screw (225) in the guide hole groove (222), and the small end of the pressing shaft (226) is directed toward the positioning hole (221). One end of the spring (224) is embedded in the positioning slide (223), and the other end of the spring (224) is mounted on the small end of the pressing shaft (226), and the other end of the spring (224) is elastically pressed against the large end surface of the pressing shaft (226).

8. The heat-sealing film device with good heat-sealing effect according to claim 5, characterized in that: The two vertical heat-sealing rollers (211) of the heat-sealing roller group (21) are connected to each other via a gear group (23); one of the vertical heat-sealing rollers (211) of adjacent heat-sealing roller groups (21) is connected to each other via a chain (24); and one of the vertical heat-sealing rollers (211) of one of the heat-sealing roller groups (21) is driven by a drive motor (25).

9. The heat-sealing film device with good heat-sealing effect according to claim 5, characterized in that: A plurality of vertically arranged positioning columns (26) are provided between the two positioning plates (22).

10. The heat-sealing film device with good heat-sealing effect according to claim 1, characterized in that: An inner guide block (27) is arranged between adjacent heat-sealing roller groups (21), and an inner guide groove (271) for guiding the packaging film is provided on the inner guide block (27); an outer guide block (28) is arranged on one side of the output end of the roller heat-sealing mechanism (2), and an outer guide groove (281) for guiding the packaging film is provided on the outer guide block (28).

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