A hot melt device

Abstract

The application relates to the technical field of film roll packaging, and particularly discloses a hot melting device. The hot melting device comprises first and second hot melting structures and a driving structure arranged oppositely, and the driving structure is used for driving the first and second hot melting structures to move close to or away from each other. The first hot melting structure comprises two driving rods, the two driving rods are arranged oppositely, a hot melting rod is arranged between the two driving rods, and the two ends of the hot melting rod are fixedly connected with the upper ends of the two driving rods. The hot melting rod comprises a first rod body, a groove is arranged along the length extension direction of the first rod body, and a heating wire is arranged on the bottom surface of the groove. The hot melting rod further comprises high-temperature cloth, the high-temperature cloth is arranged on the first rod body, and the high-temperature cloth seals the opening of the groove. When the bubble film is hot melted, the high-temperature cloth and the bubble film abut against each other, the heating wire transmits heat through the high-temperature cloth, and the high-temperature cloth can better keep the heat receiving uniformity, so that the hot melting effect of the bubble film is better.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of film roll packaging, in particular to a hot melting device. BACKGROUND

[0002] The film roll needs to be packaged by air bubble film or kraft paper during packaging, the kraft paper is bonded together by double-sided tape, and the air bubble film needs to be bonded into a whole after being hot melted by a hot melting device.

[0003] In the process of hot melting the air bubble film by the existing hot melting device, the heating wires on the hot melting rod directly heat the air bubble film, but the length of the heating wires and the length of the air bubble film to be hot melted are both relatively long, and the spacing between the heating wires at different positions and the air bubble film will have certain differences. The air bubble film is unevenly heated in the process of being heated by the heating wires, and the hot melting effect of the air bubble film is poor.

[0004] Therefore, the prior art still needs to be improved and developed. SUMMARY

[0005] The present application discloses a hot melting device to improve the problem of uneven heating of the air bubble film during hot melting.

[0006] In order to achieve the above purpose, the present application adopts the following technical scheme:

[0007] A hot melting device, comprising:

[0008] Oppositely arranged first and second hot melting structures, one end of the first hot melting structure being rotatably connected with one end of the second hot melting structure;

[0009] A driving structure mounted on the first hot melting structure, the driving structure being used to drive the first and second hot melting structures to approach each other;

[0010] The first hot melting structure is the same as the first hot melting structure, and the first hot melting structure comprises:

[0011] Two driving rods oppositely arranged;

[0012] A hot melting rod, both ends of the hot melting rod being fixedly connected with the two driving rods, the hot melting rod comprising a first rod body, a heating wire and a high-temperature cloth, the first rod body being provided with a groove along the length extension direction of the first rod body, the heating wire being mounted on the bottom surface of the groove, and the high-temperature cloth being mounted on the first rod body and closing the opening of the groove, the high-temperature cloth being used to abut against the air bubble film.

[0013] Preferably, the high-temperature cloth is a Teflon high-temperature cloth.

[0014] Preferably, the hot-melt rod further comprises a silica gel strip, the silica gel strip is filled in the groove, and the heating wire is installed inside the silica gel strip.

[0015] Preferably, the silica gel strip extends from inside the groove to outside the groove, and the high-temperature cloth is used for sealing the silica gel strip.

[0016] Preferably, the first rod body side wall is provided with an adjusting hole, the adjusting hole is a through hole, the adjusting hole is in communication with the groove and the outside, the adjusting hole is provided with a plurality of adjusting holes, and the plurality of adjusting holes are arranged at intervals.

[0017] Preferably, the driving rod comprises:

[0018] A second rod body is provided with a first through hole and a second through hole, the first through hole penetrates the side surface of the second rod body, and the second through hole extends from one end of the second rod body to the first through hole.

[0019] A sliding rod is installed in the second through hole, the sliding rod is in sliding connection with the second rod body, one end of the sliding rod is used for installing a hot-melt rod.

[0020] An elastic member is arranged in the second through hole, one end of the elastic member is connected with the second rod body, the other end of the elastic member is connected with the other end of the sliding rod, and the elastic member is used for driving the sliding rod to be close to the second rod body.

[0021] Preferably, the sliding rod comprises a first part and a second part, the first part and the second part are arranged side by side; the sliding rod comprises a connecting block, and the connecting block is fixedly connected with one end of the first part and the second part respectively.

[0022] The second through hole is provided with two, and the first part and the second part are installed in the two second through holes respectively.

[0023] The sliding rod further comprises a protruding block, the protruding block is fixedly connected with the other end of the first part and the second part respectively, and the protruding block is used for abutting against the second rod body.

[0024] Preferably, a third through hole is arranged on the side wall of the second rod body, and the third through hole is in communication with the second through hole.

[0025] Preferably, the hot-melt device further comprises a lifting structure, and the lifting structure is used for driving the first hot-melt structure and the second hot-melt structure to ascend and descend.

[0026] Preferably, the lifting structure comprises

[0027] A motor;

[0028] Transmission chain, in transmission connection with the output end of the motor;

[0029] Slide rail;

[0030] Transmission block, the first hot melt structure and the second hot melt structure are both rotationally connected on the transmission block, the transmission block is fixed on the chain link of the transmission chain, and the transmission block is in sliding connection with the slide rail.

[0031] Compared with the prior art, the beneficial effects of the present application are that:

[0032] The hot melt device provided by the present application sets the first hot melt structure and the second hot melt structure opposite to each other to heat melt the bubble film, the first hot melt structure includes two driving rods arranged opposite to each other, a hot melt rod is arranged between the two driving rods, and the two ends of the hot melt rod are fixedly connected with the two driving rods. The hot melt rod includes a first rod body, a heating wire and a high-temperature cloth. The opening of the groove is closed by the high-temperature cloth, and the bubble film is heat melted by the high-temperature cloth, so that the bubble film is heated more uniformly, and the hot melt effect of the bubble film is better. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 The structure schematic view of the hot melt device provided by an embodiment of the present application;

[0034] Figure 2 The structure schematic view of the hot melt device with a lifting structure provided by an embodiment of the present application;

[0035] Figure 3 The first structure schematic view of the hot melt rod provided by an embodiment of the present application;

[0036] Figure 4 The second structure schematic view of the hot melt rod provided by an embodiment of the present application;

[0037] Figure 5 The structure schematic view of the driving rod provided by an embodiment of the present application; Figure 3

[0038] The structure schematic view of the driving rod provided by an embodiment of the present application; Figure 6

[0039] The structure schematic view of the driving rod provided by an embodiment of the present application; Figure 7

[0040] The structure schematic view of the first working state of the hot melt structure provided by an embodiment of the present application; Figure 8

[0041] The left view of Figure 9 Figure 8

[0042] Figure 10 ​​This is a schematic diagram of the second working state of the hot-melt device provided in an embodiment of the present invention;

[0043] Figure 11 This is a schematic diagram of the third working state of the hot-melt device provided in an embodiment of the present invention;

[0044] Figure 12 This is a schematic diagram of the fourth working state of the hot-melt device provided in an embodiment of the present invention;

[0045] Figure 13 for Figure 2 Enlarged view of the structure of section B;

[0046] Figure 14 for Figure 2 Enlarged view of the C-section structure.

[0047] Key component symbols: 10-First thermoplastic structure, 11-Drive rod, 111-Second rod body, 1111-First through hole, 1112-Second through hole, 1113-Third through hole, 112-Slide rod, 1121-First part, 1122-Second part, 1123-Connecting block, 1124-Protrusion, 113-Elastic element, 114-Linear bearing, 12-Thermoplastic rod, 121-First rod body, 1211-Groove 1212-Adjustment hole, 122-Heating wire, 123-High temperature cloth, 124-Silicone strip, 20-Second hot melt structure, 30-Drive structure, 31-Fish eye bearing, 40-Lifting structure, 41-Motor, 411-Drive shaft, 412-Drive gear, 42-Drive chain, 43-Slide rail, 44-Drive block, 45-Drag chain box, 46-Drag chain, 50-Gear, M-Smaller diameter membrane roll, M'-Smaller diameter membrane roll. Detailed Implementation

[0048] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0049] In this invention, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing the invention and its embodiments, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to be constructed and operated in a specific orientation.

[0050] And, the above-mentioned partial terms, in addition to can be used to express the orientation or position relationship, can also be used to express other meanings, for example, the term "upper" can also be used to express a certain dependent relationship or connection relationship in some cases. For those skilled in the art, the specific meaning of these terms in the present application can be understood according to the specific circumstances.

[0051] In addition, the terms "mounting", "setting", "provided with", "connecting", "connected" should be broadly understood. For example, it can be fixedly connected, detachably connected, or integrally configured; it can be mechanically connected or electrically connected; it can be directly connected, or indirectly connected through an intermediate medium, or internal communication between two devices, elements or components. For those skilled in the art, the specific meaning of the above-mentioned terms in the present application can be understood according to the specific circumstances.

[0052] In addition, the terms "first", "second" and the like are mainly used to distinguish different devices, elements or components (the specific types and configurations can be the same or different), and are not intended to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise stated, the meaning of "multiple" is two or more.

[0053] The technical solutions of the present application will be further described below in conjunction with the embodiments and the drawings.

[0054] Embodiments

[0055] The film roll usually needs to be packaged by air bubble film or kraft paper when packaging, and the two ends of the kraft paper are bonded together by double-sided adhesive when packaging the film roll, and the air bubble film needs to be hot-melted into the two ends by a hot-melt device to achieve the effect of packaging the film roll.

[0056] Since the heating wire cannot be directly in contact with the air bubble film, a groove is usually provided on the hot-melt rod of the hot-melt device to install the heating wire. However, the heating wire and the film roll that needs to be hot-melted both have a relatively long length, and the spacing between the heating wire at different positions and the air bubble film will have certain differences, that is, the heating of the air bubble film at different positions will have certain differences, for example, the air bubble film at a position with a smaller spacing has been melted, while the air bubble film at a position with a larger spacing may just start to melt, the hot-melt effect of the air bubble film at different positions is not the same, resulting in poor overall hot-melt effect of the air bubble film and poor packaging effect of the film roll.

[0057] Therefore, the present application provides a hot-melt device, which refers to Figure 1, the first hot melting structure 10 and the second hot melting structure 20 are oppositely arranged, and one end of the first hot melting structure 10 and one end of the second hot melting structure 20 are rotationally connected. The driving structure 30 is installed on the first hot melting structure 10, and the driving structure 30 is used to drive the first hot melting structure 10 and the second hot melting structure 20 to move close to or away from each other.

[0058] In an embodiment of the present application, the first hot melting structure 10 and the second hot melting structure 20 are the same structure, and the first hot melting structure 10 includes two driving rods 11, the two driving rods 11 are oppositely arranged, and a hot melting rod 12 is arranged between the two driving rods 11, and the two ends of the hot melting rod 12 are fixedly connected with the upper ends of the two driving rods 11 respectively.

[0059] In an embodiment of the present application, referring to Figures 3-5 , the hot melting rod 12 includes a first rod body 121, a groove 1211 is arranged along the length extension direction of the first rod body 121, and a heating wire 122 is installed on the bottom surface of the groove 1211. The hot melting rod 12 further includes a high-temperature cloth 123, which is installed on the first rod body 121 and wraps the opening of the groove 1211. When the bubble film is hot melting, the high-temperature cloth 123 abuts against the bubble film, and the heating wire 122 transmits heat through the high-temperature cloth 123. The high-temperature cloth 123 is flattened on the first rod body 121, and the heat is evenly distributed on the entire unfolded surface when the high-temperature cloth 123 is heated, so that the uniformity of heating can be better maintained, and the hot melting effect of the bubble film is better.

[0060] In an embodiment of the present application, the two sides of the high-temperature cloth 123 are pressed and unfolded at the opening position of the groove 1211 of the first rod body 121 by a pressing plate. The pressing plate has a large surface area, so that the high-temperature cloth 123 can be fixed more stably, and the high-temperature cloth 123 is prevented from being torn.

[0061] In an embodiment of the present application, the high-temperature cloth 123 can be one of glass fiber cloth, Teflon cloth, ceramic fiber cloth, carbon fiber cloth or silica gel cloth.

[0062] Considering that the bubble film melting state may be adhered to the high-temperature cloth 123, the bubble film melted at high temperature may be adhered to the glass fiber cloth, the ceramic fiber cloth, the carbon fiber cloth or the silica gel cloth, and after the melted plastic is adhered to the high-temperature cloth 123, the adhered plastic will be heated and carbonized all the time, causing the surface of the high-temperature cloth 123 to be uneven.

[0063] Preferably, in an embodiment of the present application, the high-temperature cloth 123 is made of Teflon cloth. The Teflon cloth has very low surface energy, so it is not easy to be bonded with other materials. The melted plastic cannot be attached to the Teflon cloth, so there is no adhesion.

[0064] In an embodiment of the present application, referring to Figure 5 The hot-melt rod 12 further comprises a silica gel strip 124, the silica gel sleeve is installed in the groove 1211, the silica gel strip 124 is arranged so that the heating wire 122 is located in the silica gel strip 124, and then the silica gel strip 124 is heated first when the heating wire 122 is heated, and then the silica gel strip 124 is heated to the high-temperature cloth 123, thereby achieving the heating of the high-temperature cloth 123, so that the high-temperature cloth 123 is more uniform, and the hot-melt effect of the bubble film is better.

[0065] In an embodiment of the present application, the thickness of the silica gel strip 124 is greater than the depth of the groove 1211, and the silica gel strip 124 extends from the groove 1211 to the outside of the groove 1211. Referring to Figure 5 The two ends of the high-temperature cloth 123 are fixedly connected to the first rod body 121, and the middle part of the high-temperature cloth 123 abuts on the silica gel strip 124 and is tightly stretched under the support of the silica gel strip 124. When the high-temperature cloth 123 contacts the bubble film, the high-temperature cloth 123 can better adhere to the bubble film, so that the hot-melt effect of the bubble film is better.

[0066] Since the silica gel strip 124 and the high-temperature cloth 123 both extend for a certain length, the surface of the two hot-melt rods 12 used for clamping the bubble film is defined as a clamping surface. In combination with Figure 1 and Figure 5 When the two hot-melt rods 12 are arranged opposite to each other and clamp the bubble film, the flatness of the clamping surface can be poor, that is, part of the clamping surface can be convex and part of the clamping surface can be concave under the support of the silica gel strip 124.

[0067] In an embodiment of the present application, referring to Figure 3 An adjusting hole 1212 is arranged on the side wall of the first rod body 121, the adjusting hole 1212 is a through hole, and the adjusting hole 1212 communicates the groove 1211 with the outside. Before hot-melt of the bubble film, the flatness of the clamping surface of the two hot-melt rods 12 is adjusted, that is, the area of the high-temperature cloth 123 that is concave is pushed out by inserting a thimble in the adjusting hole 1212, so that the clamping surface has a better flatness, and then the hot-melt time of each part of the bubble film is basically consistent, and then the hot-melt effect of the bubble film is better.

[0068] In an embodiment of the present application, the adjusting hole 1212 is provided with a plurality of adjusting holes 1212, and the adjusting holes 1212 are arranged at intervals, so that the adjustment of the flatness of the clamping surface is more accurate.

[0069] In an embodiment of the present application, the first rod body 121 is a cuboid, and the groove 1211 and the adjusting hole 1212 are arranged on opposite sides of the cuboid, respectively.

[0070] In an embodiment of the present application, the distance between two adjacent adjusting holes 1212 is 10-15mm. With the interval, the silica gel strip 124 can be adjusted more accurately, so that the clamping surface between the two hot-melt rods 12 has higher flatness.

[0071] Specifically, in an embodiment of the present application, the adjusting hole 1212 is a jack hole, and a jack is screwed in the jack hole. After being screwed, the jack is fixed in the adjusted position after being rotated, so that the silica gel strip 124 can be more conveniently adjusted to the ejection position, and the flatness of the clamping surface between the two hot-melt rods 12 is ensured, so that the clamped bubble film is heated more uniformly.

[0072] Preferably, in an embodiment of the present application, the hot-melt device further comprises a gear 50, which is installed at the end of the driving rod 11 away from the hot-melt rod 12, and the first hot-melt structure 10 and the second hot-melt structure 20 are rotationally connected through the gear 50.

[0073] In actual work, the gear 50 is fixed on the driving rod 11, and the gear 50 is rotationally connected with a mounting bracket, which is not shown in the figure. By setting the gear 50, the rotation process of the first hot-melt structure 10 and the second hot-melt structure 20 moving close to each other is more stable.

[0074] In an embodiment of the present application, referring to Figure 6 and Figure 7 , the driving rod 11 comprises a second rod body 111, and a slide rod 112 is slidably connected to the second rod body 111. One end of the slide rod 112 is used to install the hot-melt rod 12. An elastic member 113 is arranged between the slide rod 112 and the second rod body 111. One end of the elastic member 113 is fixedly connected to the slide rod 112, and the other end of the elastic member 113 is fixedly connected to the second rod body 111. When the slide rod 112 moves away from the second rod body 111, the slide rod 112 has a tendency to move close to the second rod body 111 under the action of the elastic member 113. The initial length of the driving rod 11 is smaller than the smallest diameter of the film roll to be packaged, and the maximum length of the driving rod 11 after the slide rod 112 moves away from the second rod body 111 is greater than the largest diameter of the smallest film roll. After the hot-melt device uses the above-mentioned driving rod 11, when packaging film rolls of different sizes, the slide rod 112 has a tendency to move towards the second rod body 111 under the action of the elastic member 113, so that the hot-melt rod 12 is always tightly attached to the film roll during the packaging process. The hot-melt rod 12 tightly presses the bubble film, and the bubble film can be tightly attached to the film roll of different sizes, so that the film roll packaging effect is good.

[0075] Specifically, referring to Figure 6 and Figure 7The first through hole 1111 penetrates the side surface of the second rod body 111, and the second through hole 1112 extends from one end of the second rod body 111 to the first through hole 1111 and communicates with the first through hole 1111. The slide rod 112 is slidingly connected in the second through hole 1112, the slide rod 112 and the second rod body 111 are slidingly connected, and the elastic member 113 is arranged in the second through hole 1112.

[0076] In an embodiment of the present application, the elastic member 113 can be a tension spring, a rubber band, a rubber tube or the like elastic member 113 which has a retracting tendency after being stretched.

[0077] Preferably, in an embodiment of the present application, in order to facilitate the installation and replacement of the elastic member 113, the elastic member 113 is selected to be a tension spring.

[0078] In combination Figure 6 and Figure 8 After the slide rod 112 and the second rod body 111 are connected by the tension spring, when the slide rod 112 moves upward, the slide rod 112 has a downward movement tendency under the action of the tension spring, thereby driving the hot melting rod 12 to be tightly pressed against the outer surface of the film roll.

[0079] In order to facilitate the processing of the through hole, in an embodiment of the present application, the second through hole 1112 is arranged as a circular hole, and correspondingly, the slide rod 112 is arranged as a circular rod.

[0080] Further, in an embodiment of the present application, referring to Figure 7 The slide rod 112 includes a first part 1121 and a second part 1122, and the first part 1121 and the second part 1122 are arranged side by side. The slide rod 112 further includes a connecting block 1123, and the connecting block 1123 is fixedly connected with one end of the first part 1121 and the second part 1122 respectively. And the second through hole 1112 is correspondingly arranged with two, the first part 1121 and the second part 1122 are respectively arranged in the two second through holes 1112, and the first part 1121 and the second part 1122 are both circular rods. By arranging two second through holes 1112, the slide rod 112 is more stable during sliding.

[0081] Further, in an embodiment of the present application, referring to Figure 7The slide bar 112 is further provided with a protrusion 1124 fixedly connected with the other ends of the first part 1121 and the second part 1122 respectively. The protrusion 1124 is located above the second through hole 1112, and the protrusion 1124 is used to abut against the second rod body 111. When the protrusion 1124 abuts against the second rod body 111, the slide bar 112 cannot continue to move towards the elastic member 113. By setting the appropriate protrusion 1124, the elastic member 113 can always be in an elongated state, that is, the protrusion 1124 is in an initial state tightly attached to the second rod body 111, so that the hot melting rod 12 is always tightly attached to the film roll during the working process.

[0082] Specifically, in an embodiment of the present application, referring to Figure 7 A linear bearing 114 is arranged in the second through hole 1112, the outer wall of the linear bearing 114 is fixed to the inner wall of the second through hole 1112, and the inner wall of the linear bearing 114 is slidably connected with the slide bar 112. That is, the first part 1121 and the second part 1122 of the slide bar 112 are both provided with corresponding linear bearings 114, so that the first part 1121 and the second part 1122 slide smoothly.

[0083] In an embodiment of the present application, two linear bearings 114 are arranged on the first part 1121 and the second part 1122 respectively, so that the slide bar 112 slides more smoothly.

[0084] In an embodiment of the present application, in order to facilitate the installation of the linear bearing 114, a third through hole 1113 is arranged on the side wall of the second rod body 111, and the third through hole 1113 communicates with the second through hole 1112.

[0085] When it is necessary to heat and melt the bubble film, the first hot melting structure 10 and the second hot melting structure 20 are driven to move close to each other by the driving structure 30, so that the hot melting rod 12 is tightly attached to the film roll. Combined with Figure 11 and Figure 12 The hot melting rod 12 moves upwards along the side surface of the film roll until it moves to the top of the film roll. At this time, the two ends of the bubble film at the top of the film roll are heated and melted by the hot melting rod 12 and combined into one whole, thereby completing the packaging of the film roll. After adjusting the flatness of the high-temperature cloth 123 of the oppositely arranged two sealing silica gel strips 124 through the adjusting hole 1212, the bubble film is clamped between the two oppositely arranged hot melting rods 12 in an optimal plane, so that the hot melting conditions of the bubble film at each position are basically consistent, thereby making the hot melting effect of the bubble film optimal.

[0086] In an embodiment of the present application, the driving structure 30 is arranged as a cylinder, one end of the cylinder is rotationally connected with the first hot melting structure 10, and the output end of the cylinder is connected with the second hot melting structure 20 through the fish-eye bearing 31. When the cylinder is contracted, the first hot melting structure 10 and the second hot melting structure 20 are driven to move towards each other, thereby completing the hot melting of the film roll.

[0087] In an embodiment of the present application, the driving structure 30 can also be the cooperation of a motor and a rope, or a cylinder, a linear motor or other structures.

[0088] In an embodiment of the present application, the hot melting device further comprises a lifting structure 40, which is used for driving the first hot melting structure 10 and the second hot melting structure 20 to lift. Figure 2

[0089] Specifically, in an embodiment of the present application, the lifting structure 40 comprises a motor 41, a transmission gear 412 is fixedly connected to the output shaft of the motor 41, a transmission chain 42 is drivingly connected to the transmission gear 412, and a transmission block 44 is fixedly connected to the link of the transmission chain 42. The gear 50 of the first hot melting structure 10 and the gear 50 of the second hot melting structure 20 are both rotationally connected to the transmission block 44. When the motor 41 drives the transmission gear 412 to rotate, the transmission chain 42 rotates, the transmission block 44 fixedly connected to the transmission chain 42 moves up and down along with the transmission chain 42, thereby driving the first hot melting structure 10 and the second hot melting structure 20 to move up and down. Figure 13 Figure 14 Preferably, in an embodiment of the present application, a slide rail 43 is further arranged, the slide rail 43 is arranged beside the transmission block 44, and the transmission block 44 is slidingly connected to the slide rail 43. In the movement process of the transmission block 44, the slide rail 43 not only guides the transmission block 44, but also avoids the transmission block 44 from shaking under the drive of the transmission chain 42, so that the first hot melting structure 10 and the second hot melting structure 20 can stably move up and down.

[0090] Preferably, in an embodiment of the present application, the lifting structure 40 further comprises a drag chain 46 and a drag chain 46 box 45, the drag chain 46 box 45 is installed beside the slide rail 43, and the drag chain 46 is placed in the drag chain 46 box 45. One end of the drag chain 46 is fixed in the drag chain 46 box 45, and the other end of the drag chain 46 is fixedly connected to the transmission block 44. At the same time, the transmission block 44 is limited by the drag chain 46 and the slide rail 43, so that the transmission block 44 is stable in the up and down movement process.

[0091] Of course, in an embodiment of the present application, two lifting structures 40 are arranged, and the two lifting structures 40 are respectively located on the two sides of the first hot melting structure 10. Under the drive of the two lifting structures 40, the first hot melting structure 10 and the second hot melting structure 20 can stably lift.

[0092] Of course, in an embodiment of the present application, two lifting structures 40 are arranged, and the two lifting structures 40 are respectively located on the two sides of the first hot melting structure 10. Under the drive of the two lifting structures 40, the first hot melting structure 10 and the second hot melting structure 20 can stably lift. ​​

[0093] Meanwhile, the motor 41 is arranged between the two driving rods 11, and the motor 41 is provided with two output shafts, each of which is provided with a transmission gear 412, so that the output shafts of the motor 41 can drive the lifting structures 40 on both sides of the first hot-melt structure 10 to work when the motor 41 operates.

[0094] In combination with Figure 8 and Figure 11 , the elastic member 113 can only be elongated by a fixed length, and when the size of the film roll to be packaged is large, the stroke of the driving rod 11 is insufficient.

[0095] Further, in an embodiment of the present application, in combination with Figure 9 and Figure 11 , the first hot-melt structure 10 and the second hot-melt structure 20 are lifted to a suitable height by the cooperation of the lifting structure 40 and the driving rod 11, and then the driving rod 11 at the first hot-melt structure 10 and the second hot-melt structure 20 is elongated and the hot-melt rod 12 is tightly attached to the outer surface of the film roll, so that the bubble film on the outer surface of the film roll can be tightly attached to the film roll, and the packaging effect of the film roll is better.

[0096] In an embodiment of the present application, since the lower part of the hot-melt rod 12 is the film roll placing space, referring to Figure 9 , the lifting of the first hot-melt structure 10 and the second hot-melt structure 20 will not interfere with the normal packaging of the film roll.

[0097] It can be understood that, for those skilled in the art, equivalent replacements or changes can be made according to the technical solutions and the inventive concept of the present application, and all these changes or replacements shall belong to the protection scope of the present application.

Claims

1. A hot melt device, characterized in that, The utility model relates to a hot melt structure, including: Opposite first hot melt structure and second hot melt structure, one end of first hot melt structure is rotatoryly connected with one end of second hot melt structure; Driving structure, driving structure is installed on first hot melt structure, and driving structure is used for driving first hot melt structure and second hot melt structure are close to each other; First hot melt structure with second hot melt structure is same, and first hot melt structure includes: Opposite two drive rods and hot melt rod, the drive rod includes: second rod body, first through -hole and second through -hole are arranged on second rod body, first through -hole is through the side of second rod body, and second through -hole extends to first through -hole from one end of second rod body, sliding rod is installed in second through -hole, sliding rod is slidingly connected with second rod body, one end of sliding rod is used for installing hot melt rod, elastic member is arranged in first through -hole, one end of elastic member is connected with second rod body, the other end of elastic member is connected with the other end of sliding rod, and elastic member is used for driving sliding rod close to second rod body, two ends of hot melt rod are fixedly connected with two drive rods respectively, and hot melt rod includes first rod body, heating wire and high temperature cloth, the recess is arranged on the first rod body along the length extension direction of first rod body, the heating wire is installed on the bottom surface of recess, the high temperature cloth is installed on the first rod body, and the high temperature cloth seals the opening of recess, and the high temperature cloth is used for abutting with bubble film.

2. A heat staking device according to claim 1, wherein The high temperature cloth is a Teflon high temperature cloth.

3. A heat staking device according to claim 1, wherein The hot melt rod further includes a silica gel strip, the silica gel strip is filled in the recess, and the heating wire is installed inside the silica gel strip.

4. A heat staking device according to claim 3, wherein The silica gel strip extends from the recess to the outside of the recess, and the high temperature cloth is used for sealing the silica gel strip.

5. A heat staking device according to claim 3, wherein The first rod body side wall is provided with an adjusting hole, the adjusting hole is a through -hole, the adjusting hole is communicated with the recess and the outside, the adjusting hole is provided with a plurality of adjusting holes, and a plurality of adjusting holes are arranged at intervals.

6. A heat staking device according to claim 1, wherein The sliding rod includes a first portion and a second portion, and the first portion and the second portion are arranged side by side. The sliding rod further includes a protrusion, and the protrusion is fixedly connected with the other end of the first portion and the second portion.

7. A heat staking device according to claim 1, wherein The second rod body side wall is provided with a third through -hole, and the third through -hole is communicated with the second through -hole.

8. A heat staking device according to claim 1, wherein Further including lifting structure, lifting structure is used for driving first hot melt structure and second hot melt structure rise and fall.

9. A heat staking device according to claim 8, wherein The lifting structure includes Motor; Transmission chain, the output end of transmission chain is in transmission with motor; Slide rail; Transmission block, first hot melt structure and second hot melt structure are rotatoryly connected on transmission block, transmission block is fixed on the link of transmission chain, and transmission block is slidingly connected with slide rail.

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