Film roll trolley, film coating system and film coating method

Abstract

The present invention discloses a film roll trolley, a film coating system and a film coating method. The film roll trolley comprises: a fixed frame, the fixed frame comprises two wall panels arranged oppositely; a snap mechanism, the snap mechanism is arranged on the two wall panels, the snap mechanism comprises a snap bracket, each wall panel is provided with a snap bracket, the two snap brackets are arranged oppositely, and the snap brackets are provided with a slide groove along the length direction. The film roll trolley, the film coating system and the film coating method provided by the present application are characterized in that the film coating roller is rotatably arranged between the two wall panels, the fixed frame is arranged on a circular track, the fixed frame is made to walk on the circular track, the articles to be packaged are arranged in the circular track, the film is wrapped on the surface of the articles to be packaged, the film wraps the articles to be packaged by the film rolling trolley walking multiple circles, the film is wrapped on the articles layer by layer, the film is more closely contacted with the surface of the articles, and the air tightness and protective effect of the article packaging are better by covering the surface of the articles with multiple layers of film.

Description

Technical Field

[0001] The present invention relates to the technical field of packaging equipment, and in particular to a film roll trolley, a film coating system and a film coating method. Background Art

[0002] With the development of society, the proportion and output of cold-rolled thin plates, especially high-value-added high-quality plates (automobile plates, color plates, galvanized plates and electrical steel plates, etc.) have increased. The importance of steel coil packaging in ensuring safe storage and transportation and improving product quality has become increasingly prominent, and users' requirements for steel coil packaging quality have been greatly improved.

[0003] At present, the anti-rust process for steel coil packaging generally uses anti-rust paper wrapping plus plastic bag packaging. This packaging process easily wraps air in it and has poor air tightness. Long-term transportation and storage causes air and water to enter the interior, causing the steel coil to rust. Summary of the invention

[0004] The present application provides a film roll trolley, a film coating system and a film coating method, which solve the technical problem of poor steel coil packaging effect in the prior art.

[0005] The present application provides a film roll trolley, the film roll trolley comprising:

[0006] A fixed frame capable of walking on a circular track comprises two wall plates arranged opposite to each other; a coating roller wound with a coating film is rotatably arranged between the two wall plates.

[0007] In some embodiments, the film roll trolley further includes a guiding mechanism, the guiding mechanism includes two first guiding rollers arranged opposite to each other, the two ends of the two first guiding rollers are respectively rotatably connected to the wall plate, a gap is provided between the two first guiding rollers, and the two first guiding rollers are arranged side by side in the length direction of the wall plate;

[0008] The guiding mechanism also includes two second guiding rollers and two third guiding rollers, which are arranged opposite to each other. The second guiding rollers and the third guiding rollers are rotatably arranged between the two wall panels. The two second guiding rollers are arranged one-to-one in the height direction of the wall panels. The two third guiding rollers are arranged one-to-one in the height direction of the wall panels. The first guiding roller and the third guiding roller are located on both sides of the second guiding roller. The coating roller and the first guiding roller are located on both sides of the third guiding roller. The second guiding roller and the third guiding roller are staggered up and down in sequence.

[0009] In some embodiments, the film roll trolley further comprises a wheel train mechanism, wherein the wheel train mechanism comprises:

[0010] Base plates, each of the wall plates is hingedly provided with two base plates, and the base plates on the two wall plates are arranged correspondingly;

[0011] A first pressing wheel and a second pressing wheel, wherein the first pressing wheel is rotatably arranged on the wall plate, the first pressing wheel is arranged at a hinge point between the wall plate and the base plate, the second pressing wheel is rotatably arranged on the base plate, the first pressing wheel and the second pressing wheel are arranged opposite to each other, the first pressing wheel and the second pressing wheel are arranged side by side in a height direction of the base plate, the rotating shafts of the first pressing wheel and the second pressing wheel are both perpendicular to the base plate, and a gap is arranged between the first pressing wheel and the second pressing wheel;

[0012] A side guide wheel is rotatably arranged on the base plate, a rotating shaft of the side guide wheel is arranged along the height direction of the base plate, a through hole is opened between the base plate corresponding to the first clamping wheel and the second clamping wheel, and the side guide wheel is arranged in the through hole.

[0013] In some embodiments, the gear train mechanism further comprises:

[0014] A first elastic member, wherein two ends of the first elastic member are respectively connected to two base plates on the same wall plate;

[0015] An auxiliary wheel, the auxiliary wheel is rotatably arranged on the base plate, the rotating shaft of the auxiliary wheel is perpendicular to the base plate, and the auxiliary wheel is arranged at one end of the two base plates close to each other;

[0016] The base plate is rotatably connected to the wall plate.

[0017] In some embodiments, the film roll trolley further includes an energy storage mechanism, and the energy storage mechanism includes:

[0018] Energy storage bracket, each wall plate is provided with a long hole along its length direction corresponding to the third guide roller, and there are two energy storage brackets corresponding to each wall plate and they are fixedly arranged at both ends of the long hole;

[0019] Energy storage guide rods, there are two energy storage guide rods corresponding to each wall panel and the energy storage guide rods are fixedly arranged between the two energy storage brackets;

[0020] a second elastic member, wherein the second elastic member is arranged on the energy storage guide rod;

[0021] A guide roller bracket, wherein the guide roller bracket is two and respectively arranged in the two elongated holes, the guide roller bracket is slidably arranged on the energy storage guide rod, the second elastic member is located between the guide roller bracket and the energy storage bracket close to the first guide roller, and the two ends of the third guide roller are rotatably arranged on the two guide roller brackets;

[0022] A sliding rod, the sliding rod corresponding to each of the wall panels is arranged between the two energy storage guide rods, both ends of the sliding rod are fixedly arranged on the corresponding energy storage bracket through bearing supports, a first buffer pad is fixedly arranged on the two energy storage brackets, the sliding rod passes through the first buffer pad, a linear bearing is slidably arranged on the sliding rod, and the linear bearing is fixedly arranged on the end surface of the guide roller bracket close to the first guide roller.

[0023] In some embodiments, the energy storage mechanism further comprises:

[0024] A shading plate, wherein the shading plate is fixedly arranged on the guide roller bracket;

[0025] A reflector is fixedly arranged on the wall plate, and is located at one end of the long hole away from the first guide roller. When the second elastic member is in a free state, the shading plate shields the reflector.

[0026] In some embodiments, the film roll trolley further includes a pre-stretching mechanism, and the pre-stretching mechanism includes:

[0027] A pre-stretching roller, a pressure roller and a fourth guide roller, wherein the pre-stretching roller and the pressure roller are both rotatably arranged between the two wall panels, the pressure roller is arranged between the pre-stretching roller and the laminating roller, the pre-stretching roller and the pressure roller are arranged side by side in the length direction of the wall panels, the diameter of the pre-stretching roller is larger than the diameter of the pressure roller, the fourth guide roller is arranged between the pre-stretching roller and the second guide roller, the fourth guide roller is rotatably arranged between the two wall panels, the rotating shaft of the fourth guide roller is located above the rotating shaft of the pre-stretching roller, and the uppermost end of the fourth guide roller is located above the lowermost end of the second guide roller;

[0028] A sprocket is fixedly arranged at any corresponding end of the rotating shaft of the pre-stretching roller and the pressing roller, the diameter and number of teeth of the sprockets on the pre-stretching roller and the pressing roller are the same, and the sprockets on the pre-stretching roller and the pressing roller are connected by a chain.

[0029] In some embodiments, the film roll trolley further includes a buckle mechanism, which is disposed on a side of the pressing roller away from the pre-stretching roller, and the buckle mechanism includes:

[0030] A snap bracket, wherein the snap bracket and the wall plate are arranged in a one-to-one correspondence, the snap bracket is arranged on the inner side of the corresponding wall plate, a slide groove is provided on the snap bracket, and the rotating shaft of the coating roller is fixedly arranged in the slide groove;

[0031] Buckle guide rods, two buckle guide rods are fixedly arranged on the buckle bracket corresponding to each wall panel, the two buckle guide rods are arranged along the length direction of the buckle bracket, the two buckle guide rods are arranged on both sides of the slide groove, and a second buffer pad is fixedly arranged on the buckle bracket close to the clamping roller;

[0032] A third elastic member, each of the buckle guide rods is sleeved with the third elastic member;

[0033] A buckle slider, each of the buckle brackets is provided with a buckle slider, the buckle slider is arranged on the opposite side of the two buckle brackets, the buckle slider is slidably arranged on the buckle guide rod, and the third elastic member is arranged on the side of the buckle slider away from the pre-stretching mechanism;

[0034] A ratchet, a notch is provided at one end of the buckle slider away from the pre-stretching mechanism, the notch corresponds to the slide slot, the ratchet is provided in the notch and is hinged to the buckle slider, and a handle is provided at one end of the ratchet away from the slide slot;

[0035] A baffle, wherein the baffle is arranged on the end surface of the buckle slider away from the slide groove, and the end of the baffle close to the handle is bent toward the side away from the slide groove to form a bent portion, and a blind hole is opened on the end surface of the buckle slider corresponding to the baffle, and a fourth elastic member is arranged in the blind hole, and the two ends of the fourth elastic member are respectively fixedly connected to the bottom surface of the blind hole and the end surface of the baffle, and when the ratchet tooth contacts the baffle with the end surface of the baffle corresponding to the baffle, there is a gap between the ratchet tooth and the end surface of the notch.

[0036] A film coating system comprises an annular track and the film roll trolley described in the above technical solution, wherein a fixing frame of the film roll trolley can move on the annular track.

[0037] A laminating method, the laminating method is based on the laminating system described in the above technical solution, and the laminating method comprises:

[0038] Arranging the items to be packaged in the circular track;

[0039] Wrap one side of the film around the surface of the item to be packaged;

[0040] The fixing frame is operated to make the fixing frame travel a preset number of circles on the travel track to cover the surface of the object with multiple layers of film.

[0041] The beneficial effects of this application are as follows:

[0042] The film roll trolley, laminating system and laminating method provided by the present application have a laminating roller rotatably arranged between the two wall panels, a fixing frame arranged on a circular track, the fixing frame moving on the circular track, the items to be packaged are arranged in the circular track, the laminating film is wound around the surface of the items to be packaged, and the items to be packaged are wrapped with the film through multiple circles of the film roll trolley, the laminating film is wound around the items layer by layer, so that the laminating film is in closer contact with the surface of the items, and the surface of the items is covered with multiple layers of film, so that the air tightness and protective effect of the item packaging are better. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention.

[0044] Figure 1 This is a three-dimensional diagram of an embodiment of the present application;

[0045] Figure 2 This is a front view of an embodiment of the present application;

[0046] Figure 3 This is a schematic diagram of the film roll trolley in the embodiment of the present application;

[0047] Figure 4 Schematic diagram of the buckle mechanism structure in the embodiment of the present application.

[0048] Among them, 1-wheel train mechanism; 1.1-base plate; 1.2-first clamping wheel; 1.3-second clamping wheel; 1.4-side guide wheel; 1.5-through hole; 1.6-first elastic member; 1.7-auxiliary wheel; 2-pre-stretching mechanism; 2.1-pre-stretching roller; 2.2-pressing roller; 2.3-fourth guide roller; 2.4-chain; 3-buckle mechanism; 3.1-buckle bracket; 3.2-pressing roller; 3.3-second buffer pad; 3.4-buckle guide rod; 3.5-third elastic member; 3.6-buckle slider; 3.61-notch; 3.7-ratchet; 3.71-handle; 3. .72-baffle; 3.73-bending part; 3.74-blind hole; 3.75-fourth elastic member; 4-energy storage mechanism; 4.1-energy storage bracket; 4.2-long hole; 4.3-energy storage guide rod; 4.4-second elastic member; 4.5-guide roller bracket; 4.6-slide rod; 4.7-first buffer pad; 4.8-linear bearing; 4.9-bearing support; 5-fixed frame; 5.1-wall panel; 6-guiding mechanism; 6.1-first guide roller; 6.2-second guide roller; 6.3-third guide roller; ; 7-connecting rod; 8-connecting bracket; 9-connecting rod; 10-film coating. DETAILED DESCRIPTION

[0049] The embodiments of the present application solve the technical problem of poor steel coil packaging effect in the prior art by providing a film roll trolley, a film coating system and a film coating method.

[0050] The technical solution in the embodiment of the present application is to solve the above technical problems, and the overall idea is as follows:

[0051] A film roll trolley comprises: a fixed frame 5 which can move on a circular track, the fixed frame 5 comprises two wall panels 5.1 which are arranged opposite to each other; a film coating roller wound with a coating film is rotatably arranged between the two wall panels 5.1.

[0052] The coating roller is rotatably arranged between the two wall panels 5.1, and the fixing frame 5 is arranged on the circular track so that the fixing frame 5 moves on the circular track. The items to be packaged are arranged in the circular track, and the coating film is wound on the surface of the items to be packaged. The coating film 10 wraps the items to be packaged through multiple circles of the film roll trolley. The coating film 10 is wound on the items layer by layer, so that the coating film 10 is in closer contact with the surface of the items. The multi-layer coating film 10 is covered on the surface of the items, so that the airtightness and protection effect of the item packaging are better.

[0053] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0054] In order to solve the technical problem of excessive fluctuations in the angle and position of the coating 10 when it is pulled out from the film roll trolley, the present application provides a film roll trolley, which also includes a guiding mechanism 6, and the guiding mechanism 6 includes two oppositely arranged first guide rollers 6.1, and the two ends of the two first guide rollers 6.1 are respectively rotatably connected to the wall panel 5.1, and a gap is provided between the two first guide rollers 6.1, and the two first guide rollers 6.1 are arranged side by side in the length direction of the wall panel 5.1.

[0055] After being pulled out from the film roll, the coating film 10 passes through the gap between the two first guide rollers 6.1. The first guide rollers 6.1 limit the angle and position of the coating film 10 to avoid excessive fluctuations in the angle and position of the coating film 10.

[0056] The guiding mechanism 6 further comprises two second guiding rollers 6.2 and two third guiding rollers 6.3 which are arranged opposite to each other. The second guiding rollers 6.2 and the third guiding rollers 6.3 are both rotatably arranged between the two wall panels 5.1. The two second guiding rollers 6.2 are arranged one-to-one in the height direction of the wall panels 5.1. The two third guiding rollers 6.3 are arranged one-to-one in the height direction of the wall panels 5.1. The first guiding roller 6.1 and the third guiding roller 6.3 are located on both sides of the second guiding roller 6.2. The coating roller and the first guiding roller 6.1 are located on both sides of the third guiding roller 6.3. The second guiding roller 6.2 and the third guiding roller 6.3 are arranged in an upper and lower staggered manner in sequence.

[0057] The coating 10 is passed through the lower end of the second guide roller 6.2 on the lower side and then wrapped around the lower end of the third guide roller 6.3 on the lower side. The coating 10 is then led from the upper end of the third guide roller 6.3 to the lower end of the second guide roller 6.2 on the upper side. The coating 10 is then led from the upper end of the second guide roller 6.2 on the upper side to the lower end of the third guide roller 6.3 on the upper side. Finally, the coating 10 is led from the upper end of the third guide roller 6.3 on the upper side to the gap between the two first guide rollers 6.1 and then passed out, so that the coating 10 can be tightened in the film roll trolley to avoid the problem of loose film rolls causing loose packaging.

[0058] In order to solve the technical problem of unstable walking of the film roll trolley, the present application provides a film roll trolley, and the wheel train mechanism 1 includes:

[0059] Base plate 1.1, two base plates 1.1 are hingedly arranged on each wall plate 5.1, and the base plates 1.1 on the two wall plates 5.1 are arranged correspondingly;

[0060] A first pressing wheel 1.2 and a second pressing wheel 1.3, wherein the first pressing wheel 1.2 is rotatably arranged on the wall plate 5.1, the first pressing wheel 1.2 is arranged at a hinge point between the wall plate 5.1 and the base plate 1.1, and the second pressing wheel 1.3 is rotatably arranged on the base plate 1.1, the first pressing wheel 1.2 and the second pressing wheel 1.3 are arranged opposite to each other, the first pressing wheel 1.2 and the second pressing wheel 1.3 are arranged side by side in the height direction of the base plate 1.1, the rotating axes of the first pressing wheel 1.2 and the second pressing wheel 1.3 are both perpendicular to the base plate 1.1, and a gap is arranged between the first pressing wheel 1.2 and the second pressing wheel 1.3;

[0061] The side guide wheel 1.4 is rotatably arranged on the base plate 1.1, the rotating shaft of the side guide wheel 1.4 is arranged along the height direction of the base plate 1.1, a through hole 1.5 is opened between the base plate 1.1 corresponding to the first clamping wheel 1.2 and the second clamping wheel 1.3, and the side guide wheel 1.4 is arranged in the through hole 1.5.

[0062] In this embodiment, the cross-section of the track is T-shaped. By setting the track in the gap between the first clamping wheel 1.2 and the second clamping wheel 1.3, the first clamping wheel 1.2 and the second clamping wheel 1.3 can run on the front and back sides of the track. By contacting the side of the track with the side guide wheel 1.4, the side guide wheel 1.4 can run on the side of the track, avoiding friction between the substrate 1.1 and the track, so that the film roll trolley can run more smoothly.

[0063] Furthermore, the gear train mechanism 1 further includes:

[0064] A first elastic member 1.6, wherein two ends of the first elastic member 1.6 are respectively connected to two base plates 1.1 on the same wall plate 5.1;

[0065] Auxiliary wheel 1.7, the auxiliary wheel 1.7 is rotatably arranged on the base plate 1.1, the rotating shaft of the auxiliary wheel 1.7 is perpendicular to the base plate 1.1, and the auxiliary wheel 1.7 is arranged at one end of the two base plates 1.1 close to each other; the base plate 1.1 is rotatably connected to the wall plate 5.1.

[0066] When the film roll trolley runs on the track, since the base plate 1.1 is rotationally connected to the wall panel 5.1, the two base plates 1.1 on the same wall panel 5.1 are tightened by the first elastic member 1.6, so that the auxiliary wheel 1.7 contacts the end face of the track, and the auxiliary wheel 1.7 can run on the track, further improving the running stability of the wheel train mechanism 1.

[0067] In order to solve the technical problem of unstable walking of the film roll trolley, the present application provides a film roll trolley.

[0068] The film roll trolley also includes an energy storage mechanism 4, and the energy storage mechanism 4 includes:

[0069] Energy storage bracket 4.1, each wall plate 5.1 is provided with a long hole 4.2 along its length direction corresponding to the third guide roller 6.3, and there are two energy storage brackets 4.1 corresponding to each wall plate 5.1 and they are fixedly arranged at both ends of the long hole 4.2;

[0070] Energy storage guide rods 4.3, two energy storage guide rods 4.3 corresponding to each wall panel 5.1 and fixedly arranged between the two energy storage brackets 4.1;

[0071] A second elastic member 4.4, wherein the second elastic member 4.4 is arranged on the energy storage guide rod 4.3;

[0072] A guide roller bracket 4.5, wherein the guide roller bracket 4.5 is two and is respectively arranged in the two elongated holes 4.2, the guide roller bracket 4.5 is slidably arranged on the energy storage guide rod 4.3, the second elastic member 4.4 is located between the guide roller bracket 4.5 and the energy storage bracket 4.1 close to the first guide roller 6.1, and the two ends of the third guide roller 6.3 are rotatably arranged on the two guide roller brackets 4.5;

[0073] The slide bar 4.6, the slide bar 4.6 corresponding to each of the wall panels 5.1 is arranged between the two energy storage guide rods 4.3, both ends of the slide bar 4.6 are fixedly arranged on the corresponding energy storage bracket 4.1 through a bearing support 4.9, and the two energy storage brackets 4.1 are fixedly provided with a first buffer pad 4.7, the slide bar 4.6 passes through the first buffer pad 4.7, and a linear bearing 4.8 is slidably arranged on the slide bar 4.6, and the linear bearing 4.8 is fixedly arranged on the end face of the guide roller bracket 4.5 close to the first guide roller 6.1.

[0074] During the conveying process of the coating 10, the coating 10 applies tension to the third guide roller 6.3, and the third guide roller 6.3 pulls the guide roller bracket 4.5, so that the guide roller bracket 4.5 slides on the slide bar 4.6 through the linear bearing 4.8, and the first buffer pad 4.7 has a buffering effect on the guide roller bracket 4.5. The guide roller bracket 4.5 presses the second elastic member 4.4, and the second elastic member 4.4 applies continuous thrust to the guide roller bracket 4.5, so that the third guide roller 6.3 tightens the coating 10. When the winding speed of the coating 10 suddenly speeds up or slows down, the guide roller bracket 4.5 slides on the slide bar 4.6 through the linear bearing 4.8, so that the third guide roller 6.3 can continue to tighten the coating 10.

[0075] The energy storage mechanism 4 also includes:

[0076] a shading plate 4.51, wherein the shading plate 4.51 is fixedly arranged on the guide roller bracket 4.5;

[0077] A reflector 4.52 is fixedly mounted on the wall panel 5.1. The reflector 4.52 is located at one end of the long hole 4.2 away from the first guide roller 6.1. When the second elastic member 4.4 is in a free state, the shading plate 4.51 shields the reflector 4.52.

[0078] When the coating 10 is disconnected, the third guide roller 6.3 loses its tension, and the second elastic member 4.4 returns to a free state, so that the shading plate 4.51 blocks the reflective plate 4.52, and the reflective plate 4.52 cannot reflect the signal, proving that the coating 10 is disconnected; when the guide roller bracket 4.5 is subjected to tension, the shading plate 4.51 no longer blocks the reflective plate 4.52, so that the reflective plate 4.52 can feedback the signal in time, and whether the reflective plate 4.52 feeds back the signal can be detected by grating irradiation or laser irradiation.

[0079] In order to solve the technical problem that the coating 10 is not tightly coated, the present application provides a film roll trolley, the film roll trolley also includes a pre-stretching mechanism 2, and the pre-stretching mechanism 2 includes:

[0080] A pre-stretching roller 2.1, a pressing roller 2.2 and a fourth guide roller 2.3, wherein the pre-stretching roller 2.1 and the pressing roller 2.2 are both rotatably arranged between the two wall panels 5.1, the pressing roller 2.2 is arranged between the pre-stretching roller 2.1 and the laminating roller, the pre-stretching roller 2.1 and the pressing roller 2.2 are arranged side by side in the length direction of the wall panels 5.1, the diameter of the pre-stretching roller 2.1 is larger than the diameter of the pressing roller 2.2, the fourth guide roller 2.3 is arranged between the pre-stretching roller 2.1 and the second guide roller 6.2, the fourth guide roller 2.3 is rotatably arranged between the two wall panels 5.1, the rotating shaft of the fourth guide roller 2.3 is located above the rotating shaft of the pre-stretching roller 2.1, and the uppermost end of the fourth guide roller 2.3 is located above the lowermost end of the second guide roller 6.2;

[0081] A sprocket is fixedly provided at any corresponding end of the rotating shaft of the pre-stretching roller 2.1 and the pressing roller 2.2. The diameter and number of teeth of the sprockets on the pre-stretching roller 2.1 and the pressing roller 2.2 are the same. The sprockets on the pre-stretching roller 2.1 and the pressing roller 2.2 are connected by a chain 2.4.

[0082] The coating 10 is pulled out from the coating roller 10. Since the diameter of the pre-stretching roller 2.1 is larger than the diameter of the pressing roller 2.2, the coating 10 is stretched during the transmission process. The stretched coating 10 is extended through the first guide roller 6.1 and then wrapped around the article. After being stretched, the coating 10 will shrink back, so that the coating 10 is wrapped around the article more tightly.

[0083] In order to solve the technical problem that the coating 10 is not tightly wrapped, the present application provides a film roll trolley, which also includes a buckle mechanism 3, which is arranged on the side of the pressing roller 2.2 away from the pre-stretching roller 2.1, and the buckle mechanism 3 includes:

[0084] A snap bracket 3.1, wherein the snap bracket 3.1 and the wall plate 5.1 are arranged in a one-to-one correspondence, the snap bracket 3.1 is arranged on the inner side of the corresponding wall plate 5.1, a slide groove 3.2 is provided on the snap bracket 3.1, and a rotating shaft of the laminating roller is fixedly arranged in the slide groove 3.2;

[0085] A buckle guide rod 3.4, two buckle guide rods 3.4 are fixedly arranged on the buckle bracket 3.1 corresponding to each wall panel 5.1, the two buckle guide rods 3.4 are arranged along the length direction of the buckle bracket 3.1, the two buckle guide rods 3.4 are arranged on both sides of the slide groove 3.2, and a second buffer pad 3.3 is fixedly arranged on the buckle bracket 3.1 close to the pressure roller 2.2;

[0086] A third elastic member 3.5, each of the buckle guide rods 3.4 is sleeved with the third elastic member 3.5;

[0087] A buckle slider 3.6, each of the buckle brackets 3.1 is provided with a buckle slider 3.6, the buckle slider 3.6 is arranged on the opposite side of the two buckle brackets 3.1, the buckle slider 3.6 is slidably arranged on the buckle guide rod 3.4, and the third elastic member 3.5 is arranged on the side of the buckle slider 3.6 away from the pre-stretching mechanism 2;

[0088] A ratchet 3.7, a notch 3.61 is provided at one end of the buckle slider 3.6 away from the pre-stretching mechanism 2, the notch 3.61 corresponds to the slide groove 3.2, the ratchet 3.7 is provided in the notch 3.61 and is hinged to the buckle slider 3.6, and a handle 3.71 is provided at one end of the ratchet 3.7 away from the slide groove 3.2;

[0089] The baffle 3.72 is arranged on the end face of the buckle slider 3.6 away from the slide groove 3.2, and the end of the baffle 3.72 close to the handle 3.71 is bent toward the side away from the slide groove 3.2 to form a bent portion 3.73. The buckle slider 3.6 is provided with a blind hole 3.74 at the end face corresponding to the baffle 3.72, and a fourth elastic member 3.75 is arranged in the blind hole 3.74. The two ends of the fourth elastic member 3.75 are respectively fixedly connected to the bottom surface of the blind hole 3.74 and the end face of the baffle 3.72. When the ratchet 3.7 contacts the baffle 3.72 at the end face corresponding to the baffle 3.72, there is a gap between the ratchet 3.7 and the end face of the notch 3.61, so that the coating roller 10 can be stuck in the notch 3.61.

[0090] The film-coated roller 10 is inserted into the slide groove 3.2, and the handle 3.71 is pressed to make the ratchet 3.7 rotate toward the notch 3.61. The film-coated roller 10 is a flat structure, and the film-coated roller 10 is stuck to the bottom of the notch 3.61. The handle 3.71 is released, and the handle 3.71 is blocked by the curved portion 3.73, so that the fourth elastic member 3.75 pops open, and the ratchet 3.7 turns back to stick the film-coated roller 10 in the notch 3.61; the film-coated roller 10 slides on the buckle guide rod 3.4 along with the buckle slider 3.6, so that the film roll can always be in contact with the clamping roller 2.2, ensuring that the film roll and the clamping roller 2.2 maintain the same linear speed during rotation, and the third elastic member 3.5 gives continuous thrust to the buckle slider 3.6, so that the film roll and the clamping roller 2.2 are always pressed tightly.

[0091] In this embodiment, the first elastic member, the second elastic member, the third elastic member and the fourth elastic member are all springs.

[0092] A connecting rod 7 and a connecting bracket 8 are fixedly arranged between the two wall panels 5.1, so that the structure between the wall panels 5.1 is more stable.

[0093] A film coating system comprises a circular track and the film roll trolley described in the above technical solution, wherein a fixing frame 5 of the film roll trolley can move on the circular track.

[0094] There are multiple film roll trolleys. In this embodiment, there are two film roll trolleys, which are symmetrically arranged. The two film roll trolleys are hingedly connected by a connecting rod 9, and the two ends of the connecting rod 9 are respectively hinged to the corresponding wall panels 5.1, so that the film roll trolley can cover two layers of film 10 at the same time, and the covering effect is better.

[0095] A laminating method, the laminating method is based on the laminating system described in the above technical solution, and the laminating method comprises:

[0096] Arranging the items to be packaged in the circular track;

[0097] Wrapping one side of the covering film 10 around the surface of the article to be packaged;

[0098] The fixing frame 5 is operated to make the fixing frame 5 travel a preset number of circles on the travel track, so that the multi-layer coating 10 is covered on the surface of the object.

[0099] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0100] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A film roll trolley, characterized in that: The film roll trolley comprises: A fixed frame capable of traveling on a circular track, the fixed frame comprising two wall panels arranged opposite to each other; a coating roller wound with a coating film is rotatably arranged between the two wall panels; The film roll trolley further includes a guiding mechanism, which includes two first guiding rollers arranged opposite to each other, the two ends of the two first guiding rollers are respectively rotatably connected to the wall plate, a gap is provided between the two first guiding rollers, and the two first guiding rollers are arranged side by side in the length direction of the wall plate; The guiding mechanism further comprises two second guiding rollers arranged opposite to each other and two third guiding rollers arranged opposite to each other, the second guiding rollers and the third guiding rollers are both rotatably arranged between the two wall panels, the two second guiding rollers are arranged one-to-one in the height direction of the wall panels, the two third guiding rollers are arranged one-to-one in the height direction of the wall panels, the first guiding roller and the third guiding roller are located on both sides of the second guiding roller, the laminating roller and the first guiding roller are located on both sides of the third guiding roller, and the second guiding roller and the third guiding roller are arranged in an up-down staggered manner in sequence; The film roll trolley also includes a pre-stretching mechanism, and the pre-stretching mechanism includes: A pre-stretching roller, a pressure roller and a fourth guide roller, wherein the pre-stretching roller and the pressure roller are both rotatably arranged between the two wall panels, the pressure roller is arranged between the pre-stretching roller and the laminating roller, the pre-stretching roller and the pressure roller are arranged side by side in the length direction of the wall panels, the diameter of the pre-stretching roller is larger than the diameter of the pressure roller, the fourth guide roller is arranged between the pre-stretching roller and the second guide roller, the fourth guide roller is rotatably arranged between the two wall panels, the rotating shaft of the fourth guide roller is located above the rotating shaft of the pre-stretching roller, and the uppermost end of the fourth guide roller is located above the lowermost end of the second guide roller; A sprocket is fixedly arranged at any corresponding end of the rotating shafts of the pre-stretching roller and the pressing roller, the diameter and number of teeth of the sprockets on the pre-stretching roller and the pressing roller are the same, and the sprockets on the pre-stretching roller and the pressing roller are connected by a chain; The film roll trolley further includes a buckle mechanism, which is arranged on a side of the pressing roller away from the pre-stretching roller, and the buckle mechanism includes: A snap bracket, wherein the snap bracket and the wall plate are arranged in a one-to-one correspondence, the snap bracket is arranged on the inner side of the corresponding wall plate, a slide groove is provided on the snap bracket, and the rotating shaft of the coating roller is fixedly arranged in the slide groove; Buckle guide rods, two buckle guide rods are fixedly arranged on the buckle bracket corresponding to each wall panel, the two buckle guide rods are arranged along the length direction of the buckle bracket, the two buckle guide rods are arranged on both sides of the slide groove, and a second buffer pad is fixedly arranged on the buckle bracket close to the clamping roller; A third elastic member, each of the buckle guide rods is sleeved with the third elastic member; A buckle slider, each of the buckle brackets is provided with a buckle slider, the buckle slider is arranged on the opposite side of the two buckle brackets, the buckle slider is slidably arranged on the buckle guide rod, and the third elastic member is arranged on the side of the buckle slider away from the pre-stretching mechanism; A ratchet, a notch is provided at one end of the buckle slider away from the pre-stretching mechanism, the notch corresponds to the slide slot, the ratchet is provided in the notch and is hinged to the buckle slider, and a handle is provided at one end of the ratchet away from the slide slot; A baffle, wherein the baffle is arranged on the end surface of the buckle slider away from the slide groove, an end of the baffle close to the handle is bent toward a side away from the slide groove to form a curved portion, a blind hole is opened on the end surface of the buckle slider corresponding to the baffle, a fourth elastic member is arranged in the blind hole, two ends of the fourth elastic member are respectively fixedly connected to the bottom surface of the blind hole and the end surface of the baffle, and when the end surface of the ratchet corresponding to the baffle contacts the baffle, a gap is formed between the ratchet and the end surface of the notch; The film roll trolley also includes a wheel train mechanism, which includes: Base plates, each of the wall plates is hingedly provided with two base plates, and the base plates on the two wall plates are arranged correspondingly; A first pressing wheel and a second pressing wheel, wherein the first pressing wheel is rotatably arranged on the wall plate, the first pressing wheel is arranged at a hinge point between the wall plate and the base plate, the second pressing wheel is rotatably arranged on the base plate, the first pressing wheel and the second pressing wheel are arranged opposite to each other, the first pressing wheel and the second pressing wheel are arranged side by side in a height direction of the base plate, the rotating shafts of the first pressing wheel and the second pressing wheel are both perpendicular to the base plate, and a gap is arranged between the first pressing wheel and the second pressing wheel; A side guide wheel is rotatably arranged on the base plate, a rotating shaft of the side guide wheel is arranged along the height direction of the base plate, a through hole is opened between the base plate corresponding to the first clamping wheel and the second clamping wheel, and the side guide wheel is arranged in the through hole.

2. The film roll trolley according to claim 1, characterized in that: The gear train mechanism also includes: A first elastic member, wherein two ends of the first elastic member are respectively connected to two base plates on the same wall plate; An auxiliary wheel, the auxiliary wheel is rotatably arranged on the base plate, the rotating shaft of the auxiliary wheel is perpendicular to the base plate, and the auxiliary wheel is arranged at one end of the two base plates close to each other; The base plate is rotatably connected to the wall plate.

3. The film roll trolley according to claim 1, characterized in that: The film roll trolley also includes an energy storage mechanism, which includes: Energy storage bracket, each wall plate is provided with a long hole along its length direction corresponding to the third guide roller, and there are two energy storage brackets corresponding to each wall plate and they are fixedly arranged at both ends of the long hole; Energy storage guide rods, there are two energy storage guide rods corresponding to each wall panel and the energy storage guide rods are fixedly arranged between the two energy storage brackets; a second elastic member, wherein the second elastic member is arranged on the energy storage guide rod; A guide roller bracket, wherein the guide roller bracket is two and respectively arranged in the two elongated holes, the guide roller bracket is slidably arranged on the energy storage guide rod, the second elastic member is located between the guide roller bracket and the energy storage bracket close to the first guide roller, and the two ends of the third guide roller are rotatably arranged on the two guide roller brackets; A sliding rod, the sliding rod corresponding to each of the wall panels is arranged between the two energy storage guide rods, both ends of the sliding rod are fixedly arranged on the corresponding energy storage bracket through bearing supports, a first buffer pad is fixedly arranged on the two energy storage brackets, the sliding rod passes through the first buffer pad, a linear bearing is slidably arranged on the sliding rod, and the linear bearing is fixedly arranged on the end surface of the guide roller bracket close to the first guide roller.

4. The film roll trolley according to claim 3, characterized in that: The energy storage mechanism also includes: A shading plate, wherein the shading plate is fixedly arranged on the guide roller bracket; A reflector is fixedly arranged on the wall plate, and is located at one end of the long hole away from the first guide roller. When the second elastic member is in a free state, the shading plate shields the reflector.

5. A coating system, characterized in that: It comprises a circular track and the film roll trolley as described in any one of claims 1 to 4, wherein the fixing frame of the film roll trolley can move on the circular track.

6. A coating method, characterized in that: The coating method is based on the coating system according to claim 5, and the coating method comprises: Arranging the items to be packaged in the circular track; Wrap one side of the film around the surface of the item to be packaged; The fixing frame is operated to make the fixing frame travel a preset number of circles on the travel track to cover the surface of the object with multiple layers of film.

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