A stretch film packaging machine

Abstract

The utility model discloses a wrapping film packaging machine, the technical solution of which includes a supporting conveying mechanism; a wrapping packaging mechanism, the wrapping packaging mechanism is used to wrap the packaging film on the tire; the wrapping packaging mechanism includes a C-frame and a packaging film quick-change assembly; the packaging film quick-change assembly includes a fixed column, the fixed column is detachably connected to the C-frame; a rotating column, the rotating column is sleeved outside the fixed column and is rotatably connected to the rotating column; a telescopic piece, the telescopic piece is provided with a plurality of telescopic pieces and the plurality of telescopic pieces are arranged around the axis of the rotating column, the telescopic piece is embedded in the rotating column close to the rotating column and can slide in the rotating column along the radial direction of the rotating column; and an elastic member. The utility model can clamp the packaging film roll outside the rotating column through the action of the telescopic piece and the elastic member, and no unnecessary operation is required when installing and removing the packaging film roll, making the installation and removal of the packaging film roll more convenient and quick.

Description

Technical Field

[0001] The utility model relates to the technical field of tire packaging, and more specifically, it relates to a stretch film packaging machine. Background Art

[0002] Automobile tires are one of the important parts of automobiles. They are in direct contact with the road surface and work together with the automobile suspension to mitigate the impact of the car when it is driving. Whether it is a semi-steel tire, a full-steel tire or a special tire, the tire needs to be packaged after production. When packaging, the packaging film is passed through the inner hole of the tire and then wrapped around the tire. The tire is packaged through multiple turns of winding.

[0003] The packaging of tires is mostly completed by a stretch film packaging machine. The main structure of the existing stretch film packaging machine includes a machine table and a C-frame. When the tire is supported on the machine table, one side of the tire will enter the C-frame due to the opening of the C-frame, and then the C-frame rotates around its own axis, and the packaging film is continuously wrapped around the tire through its own rotation.

[0004] In the existing tire packaging machine, the packaging film roll is installed on a C-frame. When installing the packaging film roll, the packaging film roll is put on a cylinder connected to the C-frame, and then a baffle is screwed on the cylinder through a threaded connection. The baffle prevents the packaging film roll from sliding off the cylinder. This installation method requires frequent unscrewing and installing of the baffle when replacing the packaging film roll, which makes the operation cumbersome and inconvenient. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a stretch film packaging machine, which can clamp the packaging film roll outside the rotating column through the action of telescopic plates and elastic parts. When installing and removing the packaging film roll, no unnecessary operations are required, making the installation and removal of the packaging film roll more convenient and quick.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a stretch film packaging machine, comprising a supporting and conveying mechanism, wherein the supporting and conveying mechanism is used to support and convey tires;

[0007] and a wrapping and packaging mechanism, the wrapping and packaging mechanism being used for wrapping a packaging film on the tire;

[0008] The wrapping packaging mechanism comprises a C-shaped frame, the axis of which is horizontal and arranged along the conveying direction of the tire and the C-shaped frame rotates around its own axis;

[0009] and a packaging film quick-change assembly, wherein the packaging film quick-change assembly is arranged on a C-shaped frame;

[0010] The packaging film quick-change assembly includes a fixed column, which is detachably connected to the C-shaped frame and the axis of the fixed column is parallel to the axis of the C-shaped frame;

[0011] A rotating column, which is sleeved outside the fixed column and is rotatably connected with the rotating column;

[0012] A telescopic sheet, wherein a plurality of the telescopic sheets are arranged around the axis of the rotating column, and the telescopic sheet is embedded in the rotating column near the rotating column and can slide in the rotating column along the radial direction of the rotating column;

[0013] And elastic parts, each expansion piece corresponds to at least one elastic part, when the packaging film roll is set outside the expansion pieces, the elastic parts are squeezed and apply elastic force to the expansion pieces away from the axis of the rotating column.

[0014] The utility model is further configured as follows: a retaining ring is provided at one end of the rotating column close to the C-shaped frame, and the diameter of the retaining ring is greater than the diameter of the rotating column;

[0015] A fixing ring is provided at one end of the rotating column away from the retaining ring, the fixing ring is coaxial with the rotating column and has a diameter smaller than the inner diameter of the packaging film roll;

[0016] Two clamping plates are fixedly connected to the two ends of the portion of the telescopic piece embedded in the rotating column;

[0017] The inner side of the retaining ring and the inner side of the fixing ring are provided with clamping grooves, and the two clamping plates are respectively clamped into the two clamping grooves. The cooperation between the clamping plates and the clamping grooves prevents the telescopic sheet from being separated from the rotating column outwards.

[0018] The utility model is further configured as follows: an end of the expansion piece away from the retaining ring is provided with an inclined surface, and an end of the inclined surface away from the retaining ring is inclinedly arranged toward a direction close to the axis of the rotating column.

[0019] The utility model is further configured as follows: a receiving groove is provided outside the rotating column corresponding to each telescopic piece, and a side of the telescopic piece close to the axis of the rotating column is embedded in the receiving groove;

[0020] Each expansion piece corresponds to multiple elastic parts, and the multiple elastic parts corresponding to the same expansion piece are arranged along the axis of the rotating column. Multiple installation grooves are opened on the side of the accommodating groove close to the axis of the rotating column. The multiple installation grooves correspond to multiple elastic parts respectively, and the elastic parts are arranged in the corresponding installation grooves.

[0021] The utility model is further configured as follows: the support and conveying mechanism comprises a support frame;

[0022] And support rollers, wherein a plurality of support rollers are provided and arranged along the feeding and discharging direction of the tire, and the support rollers are configured as self-powered rollers.

[0023] The utility model is further configured as follows: the support and conveying mechanism further includes a lifting frame, and the lifting frame can be lifted up and down at the support frame;

[0024] And a ball, wherein a plurality of balls are provided and arranged on the top of the lifting frame, and the ball can pass through two adjacent support rollers upward under the action of the lifting frame to support the tire.

[0025] The utility model is further configured as follows: it also includes a sliding frame, wherein two sliding frames are provided and are respectively located on both sides above the support frame, and the sliding frames slide along the width direction of the support frame;

[0026] The positioning rollers are vertically arranged and rotatably connected to the sliding frames. Two positioning rollers are rotatably connected to each sliding frame. The two positioning rollers on the same sliding frame are arranged along the arrangement direction of the supporting rollers.

[0027] The utility model is further configured as follows: a crossbeam is arranged above the support frame, and the two sliding frames slide on the crossbeam;

[0028] A rotating rod, the rotating rod is rotatably connected to the crossbeam, and the rotating rod is horizontal and rotates around a vertical axis at a middle position in a length direction;

[0029] And connecting rods, one end of the two connecting rods is respectively hinged on the two ends of the rotating rod, and the other ends of the two connecting rods are respectively hinged on the two sliding frames.

[0030] The utility model is further configured to include: a tape adsorption and cutting device, wherein the tape adsorption and cutting device is arranged on the support frame and adjacent to the C-shaped frame;

[0031] The tape adsorption and cutting device comprises a fixing seat;

[0032] A tape holder, wherein the tape holder is rotatably connected to the fixed seat, the tape roll is fixed to the tape holder and the tape is unwound by the rotation of the tape holder;

[0033] A cutter, used for cutting the adhesive tape;

[0034] A pressure roller, which is arranged between the cutter and the tape roll to press the tape onto the tire;

[0035] An adsorption seat, the adsorption seat is arranged between the cutter and the pressure roller, and an adsorption hole is arranged on the adsorption seat, and the adhesive tape can be adsorbed on the adsorption seat under the negative pressure of the adsorption hole;

[0036] and an air suction pipe connected to the adsorption seat to provide negative pressure for the adsorption hole.

[0037] The utility model is further configured as follows: the adsorption seat is fixed on the cutter so that the adsorption seat can move with the cutter to adsorb the adhesive tape cut by the cutter onto the adsorption seat.

[0038] To sum up, compared with the prior art, the utility model has the following beneficial effects: the utility model can clamp the packaging film roll outside the rotating column through the action of the telescopic plate and the elastic part. When installing and removing the packaging film roll, no unnecessary operations are required, making the installation and removal of the packaging film roll more convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 is a schematic diagram of the overall structure of an embodiment;

[0040] Figure 2 for Figure 1 A magnified schematic diagram of part A;

[0041] Figure 3 A schematic diagram of a lifting frame is shown in the embodiment;

[0042] Figure 4 for Figure 3 An enlarged schematic diagram of part C of FIG.

[0043] Figure 5 for Figure 1 An enlarged schematic diagram of part B;

[0044] Figure 6 is a schematic diagram of a packaging film quick-change assembly of an embodiment;

[0045] Figure 7 Schematic diagram of removing the rotating column for the packaging film quick change assembly;

[0046] Figure 8 for Figure 6 An enlarged schematic diagram of the D portion;

[0047] Fig. 9 for Figure 7 An enlarged schematic diagram of part E of FIG.

[0048] Fig.10 A schematic diagram of a tape adsorption and cutting mechanism of an embodiment;

[0049] Fig.11 The schematic diagram of the embodiment embodies the pressing roller and the cutting knife;

[0050] Fig.12 for Fig.10 Enlarged schematic diagram of part F.

[0051] In the figure: 1, support conveying mechanism; 11, support frame; 12, support roller; 13, lifting frame; 14, ball bearing; 2, wrapping packaging mechanism; 21, fixed frame; 22, C-shaped frame; 23, packaging film quick-change assembly; 231, fixed column; 232, rotating column; 2321, receiving groove; 2322, mounting groove; 233, telescopic sheet; 2331, card plate; 234, retaining ring; 235, fixed ring; 236, limit ring; 237, pressure ring; 238, elastic member; 2 39. Slot; 24. Active roller; 3. Centering rotary clamping mechanism; 31. Crossbeam; 32. Sliding frame; 33. Positioning roller; 34. Rotating rod; 35. Connecting rod; 4. Adhesive tape adsorption and cutting mechanism; 41. Fixed seat; 42. Adhesive tape seat; 43. Pressing roller; 431. Compressing telescopic member; 432. Compressing seat; 44. Cutter; 441. Cutting telescopic member; 45. Lifting seat; 46. Rotating rod; 47. Transverse adjustment rod; 48. Longitudinal adjustment rod; 49. Adsorption seat. DETAILED DESCRIPTION

[0052] In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention is clearly and completely described below in conjunction with the drawings of the present invention. Based on the embodiments in this application, other similar embodiments obtained by ordinary technicians in this field without making creative work should all fall within the scope of protection of this application. In addition, the directional words mentioned in the following embodiments, such as "up", "down", "left", "right", etc., are only referenced to the directions of the drawings. Therefore, the directional words used are used to illustrate rather than limit the invention.

[0053] The utility model is further described below in conjunction with the accompanying drawings and preferred embodiments.

[0054] Embodiment: A stretch film packaging machine, see attached Figure 1 -Attached Fig. 9 The invention comprises a supporting and conveying mechanism 1 for supporting and conveying a tire and a wrapping and packaging mechanism 2 for wrapping a packaging film around the tire.

[0055] Specifically, the supporting and conveying mechanism 1 includes a supporting frame 11 and a plurality of supporting rollers 12 arranged on the supporting frame 11. The plurality of supporting rollers 12 are arranged along the feeding and discharging direction of the tire. In this embodiment, the supporting rollers 12 are arranged as automatic power rollers. Through the setting of the supporting rollers 12, when the tire is transmitted to the supporting frame 11, the supporting rollers 12 can drive the tire to move, and the tire can be conveyed out after the tire packaging is completed.

[0056] The feeding and discharging directions of the tire are horizontal, and the axis direction of the support roller 12 is set to be horizontal and perpendicular to the feeding and discharging directions of the tire.

[0057] Specifically, the support and conveying mechanism 1 further includes a lifting frame 13, which is lifted and lowered relative to the support frame 11, and a plurality of balls 14 are arranged on the top of the lifting frame 13, and the balls 14 can rotate around their own spherical centers on the lifting frame 13. The lifting of the lifting frame 13 can drive the plurality of balls 14 to pass through two adjacent support rollers 12 upwards and make the height of the balls 14 higher than the support rollers 12, thereby lifting the tire on the support rollers 12, so that the tire can smoothly rotate around its own axis when the packaging film is wound.

[0058] Specifically, a plurality of cylinders are provided on the support frame 11 , and the lifting frame 13 is driven to move up and down by the plurality of cylinders.

[0059] Specifically, the present embodiment further includes a centering rotary clamping mechanism 3, which includes a crossbeam 31 disposed above the support frame 11, and both ends of the crossbeam 31 are fixedly connected to the support frame 11 through vertical rods. The length direction of the crossbeam 31 is horizontal and perpendicular to the feeding and discharging direction of the tire. Two sliding frames 32 are disposed on the crossbeam 31, and the sliding frames 32 slide on the crossbeam 31 along the length direction of the crossbeam 31. Two positioning rollers 33 are rotatably connected to each sliding frame 32, and the two positioning rollers 33 on the same sliding frame 32 are arranged along the feeding and discharging direction of the tire; the length direction of the support frame 11 is disposed along the feeding and discharging direction of the tire, and in order to enable the positioning rollers 33 on the two sliding frames 32 to simultaneously position the tire, the positioning rollers 33 on the two sliding frames 32 are symmetrically disposed relative to the middle position in the width direction of the support frame 11.

[0060] When wrapping the packaging film on the tire, the position of the tire needs to be positioned, and then the packaging film is wrapped around the tire by the wrapping packaging mechanism 2. When the tire needs to be positioned, the two sliding frames 32 slide towards each other, thereby driving the positioning rollers 33 on the two sliding frames 32 to move. When the four positioning rollers 33 are simultaneously pressed against the outer side of the tire, the position of the tire is clamped and fixed.

[0061] When wrapping the tire, it is necessary to wrap it at multiple positions of the tire, so it is necessary to drive the tire to rotate and adjust the position of the wrapping film wrapped on the tire by the wrapping packaging mechanism 2. Specifically, at least one positioning roller 33 is set and driven by a motor to rotate.

[0062] Specifically, a rotating rod 34 is rotatably connected to the top of the crossbeam 31. The length direction of the rotating rod 34 is horizontal and the middle position of the length direction is rotatably connected to the crossbeam 31. The rotation axis of the rotating rod 34 is vertical. Two connecting rods 35 are hinged at both ends of the rotating rod 34. The other ends of the two connecting rods 35 are respectively hinged to the two sliding frames 32. A motor is provided on the crossbeam 31 that is transmission-connected to the rotating rod 34. The rotating rod 34 is driven to rotate by the motor. When the rotating rod 34 rotates, the two sliding frames 32 can be driven to slide toward or away from each other through the two connecting rods 35. Through the arrangement of the rotating rod 34 and the connecting rod 35, the two sliding frames 32 can be driven to slide toward or away from each other at the same time.

[0063] Specifically, a fixed frame 21 is arranged on the support and conveying mechanism 1, and the fixed frame 21 is arranged in a C shape; a plurality of support rollers 12 pass through the opening of the C-shaped fixed frame 21 along the arrangement direction, and the lifting frame 13 also passes through the C-shaped opening of the fixed frame 21. The wrapping packaging mechanism 2 includes a C-shaped frame 22 rotating on the fixed frame 21, a plurality of active rollers 24 rotatably connected to the fixed frame 21, and a packaging film quick-change assembly 23 detachably connected to the C-shaped frame 22; the packaging film roll is installed on the packaging film quick-change assembly 23, and a plurality of active rollers 24 are arranged around the C-shaped frame 22 and clamp the C-shaped frame 22. The rotation of the active rollers 24 can drive the C-shaped frame 22 to rotate around its own axis. During the rotation of the C-shaped frame 22, the packaging film on the packaging film roll is continuously wrapped around the tire to achieve the packaging of the tire.

[0064] Specifically, the packaging film quick-change assembly 23 includes a fixed column 231 detachably connected to the C-shaped frame 22, a rotating column 232 sleeved outside the fixed column 231 and rotatably connected to the fixed column 231, a plurality of expansion pieces 233 arranged around the rotating column 232, and a plurality of elastic members 238 arranged on the rotating column 232. The axial direction of the fixed column 231 is parallel to the axial direction of the C-shaped frame 22, the length direction of the expansion piece 233 is arranged along the axial direction of the rotating column 232, the plurality of expansion pieces 233 are evenly arranged around the axis of the rotating column 232, and the side of the expansion piece 233 close to the rotating column 232 is embedded in the rotating column 232 and can slide in the rotating column 232 along the radial direction of the rotating column 232. Each expansion piece 233 corresponds to at least one elastic member 238. When the packaging film roll is arranged outside the rotating column 232 and contacts the side of multiple expansion pieces 233 away from the rotating column 232, the elastic member 238 is squeezed and applies elastic force to the expansion piece 233 away from the axis of the rotating column 232.

[0065] When the packaging film roll is installed outside the rotating column 232, the packaging film roll pushes the expansion piece 233 to slide in the direction close to the axis of the rotating column 232, so that the expansion piece 233 squeezes the elastic member 238. When the packaging film roll is completely sleeved on the outside of the rotating column 232, under the action of the elastic member 238, multiple expansion pieces 233 are simultaneously pressed against the inner side of the packaging film roll under the action of the elastic member 238, so that the packaging film roll is limited outside the rotating column 232. There is no need to set up other limiting structures to achieve the installation of the packaging film roll; and when removing the packaging film roll, it is only necessary to use manpower to pull the packaging film roll out from the outside of the rotating column 232 along the axis direction of the rotating column 232, so that the removal operation is also convenient and quick.

[0066] Specifically, a retaining ring 234 is provided on the end of the rotating column 232 close to the C-shaped frame 22 and is sleeved on the outside of the fixed column 231, and a fixing ring 235 is provided on the end of the rotating column 232 away from the retaining ring 234 and is sleeved on the outside of the fixed column 231; the diameter of the retaining ring 234 is larger than the diameter of the rotating column 232, so as to block the packaging film roll when installing the packaging film roll, and prevent the operator from pushing the packaging film roll to contact the C-shaped frame 22. The fixing ring 235 is arranged to be coaxial with the rotating column 232 and has a diameter smaller than the inner diameter of the packaging film roll, so that the packaging film roll can smoothly pass through the fixing ring 235 when installing.

[0067] Specifically, two clamping plates 2331 are fixedly connected at both ends of the part of the expansion piece 233 embedded in the rotating column 232, and clamping grooves 239 are provided on the inner side of the retaining ring 234 and the inner side of the fixing ring 235. The two clamping plates 2331 are respectively inserted into the two clamping grooves 239. The clamping plates 2331 can slide in the clamping grooves 239 along the radial direction of the rotating column 232 to prevent the clamping plates 2331 from hindering the sliding of the expansion piece 233; through the cooperation between the clamping plates 2331 and the clamping grooves 239, the expansion piece 233 can be prevented from detaching from the rotating column 232 outward.

[0068] Specifically, an inclined surface is provided at one end of the expansion piece 233 away from the retaining ring 234, and the end of the inclined surface away from the retaining ring 234 is inclined toward the direction close to the axis of the rotating column 232. By providing the inclined surface on the expansion piece 233, it is easier to put the packaging film roll outside the multiple expansion pieces 233 when installing the packaging film roll.

[0069] Specifically, the outer side of the fixing ring 235 is provided with an inclined surface, and the side of the inclined surface away from the retaining ring 234 is inclined toward the direction close to the axis of the rotating column 232. By providing the inclined surface on the fixing ring 235, the packaging film roll can be more easily sleeved outside the rotating column 232.

[0070] Specifically, a limiting ring 236 is provided on the outer sleeve of the fixed column 231, and the limiting ring 236 is arranged between the retaining ring 234 and the C-shaped frame 22; the end of the fixed column 231 away from the limiting ring 236 is detachably connected with a pressing ring 237, and the pressing ring 237 and the limiting ring 236 limit the retaining ring 234, the rotating column 232 and the fixed ring 235 between the pressing ring 237 and the limiting ring 236, thereby realizing the assembly of the quick change system.

[0071] Specifically, thrust bearings may be provided between the pressure ring 237 and the fixed ring 235 and between the limit ring 236 and the retaining ring 234 to improve the smoothness of the rotation of the rotating column 232 outside the fixed column 231 .

[0072] Specifically, the pressure ring 237 is detachably connected to the end of the fixing column 231 by means of threaded connection or retaining spring.

[0073] Specifically, a receiving groove 2321 is provided outside the rotating column 232 corresponding to each telescopic piece 233, and the side of the telescopic piece 233 close to the axis of the rotating column 232 is embedded in the receiving groove 2321, and the limiting groove penetrates the rotating column 232 along the axial direction of the rotating column 232 and is connected with the retaining ring 234 and the card groove 239 on the fixing ring 235.

[0074] Specifically, each expansion piece 233 corresponds to a plurality of elastic members 238, and the plurality of elastic members 238 corresponding to the same expansion piece 233 are arranged along the axis of the rotating column 232, and a plurality of mounting grooves 2322 are provided on one side of the receiving groove 2321 close to the axis of the rotating column 232, and the plurality of mounting grooves 2322 respectively correspond to the plurality of elastic members 238, and the elastic members 238 are arranged in the corresponding mounting grooves 2322; the mounting grooves 2322 penetrate the rotating column 232 in a direction away from the axis of the rotating column 232, so as to facilitate the installation of the elastic member 238 in the mounting grooves 2322. Specifically, the elastic member 238 is arranged as a spring.

[0075] Embodiment 2: A stretch film packaging machine, combined with the attached Fig.10 -Attached Fig.12The difference between this embodiment and the first embodiment is that this embodiment further includes a tape adsorption and cutting mechanism 4, which includes a fixed seat 41, a tape seat 42 arranged on the fixed seat 41, a cutter 44 arranged on the fixed seat 41 for cutting the tape, a pressure roller 43 arranged on the fixed seat 41, an adsorption seat 49 arranged between the cutter 44 and the pressure roller 43, and an air suction pipe connected to the adsorption seat 49. The tape seat 42 is rotatably connected to the fixed seat 41, the tape roll is fixed on the tape seat 42 and the tape roll is unwound by the rotation of the tape seat 42; the pressure roller 43 is arranged between the cutter 44 and the tape roll to press the tape on the tire; the adsorption seat 49 is arranged between the cutter 44 and the pressure roller 43, and the adsorption seat 49 is provided with an adsorption hole, and the tape can be adsorbed on the adsorption seat 49 under the negative pressure of the adsorption hole; the air suction pipe is connected to the adsorption seat 49 to provide negative pressure to the adsorption hole.

[0076] When a tire is wrapped and packaged, the cutter 44 moves forward and contacts the tape to cut the tape. At this time, the suction pipe provides negative pressure to the suction hole, so that one end of the tape connected to the tape roll after cutting is adsorbed on the adsorption seat 49. When packaging the next tire, the pressure roller 43 moves forward to push the tape to contact the tire, thereby achieving the adhesion of the tape to the tire.

[0077] Specifically, the present embodiment further includes a cutting telescopic member 441, which is disposed on the fixed seat 41 and is used to drive the cutter 44 to move closer to and away from the tape to cut the tape. The cutting telescopic member 441 is configured as a cylinder, the cylinder body of the cylinder is fixedly connected to the fixed seat 41, and the piston rod is fixedly connected to the cutter 44, so that the expansion and contraction of the piston rod in the cylinder body can drive the cutter 44 to move closer to and away from the tape, so that the cutting operation of the tape can be achieved through the movement of the cutter 44.

[0078] Specifically, the adsorption seat 49 is fixed on the cutter 44 so that the adsorption seat 49 can move with the cutter 44 to adsorb the tape cut by the cutter 44 on the adsorption seat 49. When the cutter 44 moves toward the tape to cut the tape, the adsorption seat 49 is also driven by the cutter 44 to approach the tape. When the cutter 44 contacts the tape to cut the tape, the adsorption seat 49 is close to the tape, so that one end of the tape connected to the tape roll after cutting can be adsorbed on the adsorption seat 49 under the negative pressure in the adsorption hole.

[0079] Specifically, the present embodiment further comprises a compression telescopic member 431 and a compression seat 432, wherein the compression telescopic member 431 is arranged on the fixed seat 41; the pressure roller 43 is rotatably connected to the compression seat 432, and the compression telescopic member 431 is connected to the compression seat 432 to drive the pressure roller 43 to approach and move away from the tire through the compression seat 432. Specifically, the compression telescopic member 431 is arranged as a cylinder, the cylinder body of the compression telescopic member 431 is fixedly connected to the fixed seat 41, the piston rod is fixedly connected to the compression seat 432, and the compression seat 432 is driven to slide by the expansion and contraction of the piston rod on the cylinder body, thereby driving the pressure roller 43 to approach and move away from the tire. Since the pressure roller 43 is located between the tape holder 42 and the adsorption seat 49, when the tape is adsorbed on the adsorption seat 49, the pressure roller 43 can push the tape between the adsorption seat 49 and the tape holder 42 to move toward the tire until the tape is attached to the tire, and then the adsorption seat 49 releases the adsorption of the tape, and as the tire is packed, the pressure roller 43 packs the tape outside the tire.

[0080] Specifically, in this embodiment, the sliding direction of the cutter 44 and the sliding direction of the pressure roller 43 are horizontal and parallel to each other.

[0081] Specifically, the present embodiment further includes a lifting seat 45, which drives the fixing seat 41 to move up and down by moving up and down, thereby adjusting the position of the fixing seat 41 according to the size of the tire. The lifting seat 45 is disposed on the support frame 11, and the lifting seat 45 can slide up and down on the support frame 11, thereby driving the fixing seat 41 to slide up and down.

[0082] Specifically, the present embodiment further includes a rotating rod 46, which is vertically arranged and rotatably connected to the lifting seat 45. The rotation of the rotating rod 46 on the lifting seat 45 drives the fixing seat 41 to rotate around the vertical axis, so that the angle of tape lamination and cutting can be adjusted according to the size of the tire. Bolts are arranged on the lifting seat 45, and the rotating rod 46 can be fixed to the lifting seat 45 through the action of the bolts.

[0083] Specifically, this embodiment also includes a transverse adjustment rod 47 and a longitudinal adjustment rod 48. The length direction of the transverse adjustment rod 47 is horizontally arranged. The transverse adjustment rod 47 is slidably connected to the rotating rod 46. The transverse adjustment rod 47 can slide along its own length direction on the rotating rod 46 and the transverse adjustment rod 47 can be fixed on the rotating rod 46. Specifically, the length direction of the longitudinal adjustment rod 48 is horizontal and perpendicular to the length direction of the transverse adjustment rod 47. The longitudinal adjustment rod 48 is slidably connected to the transverse adjustment rod 47. The longitudinal adjustment rod 48 can slide along its own length direction on the transverse adjustment rod 47 and can be fixed on the transverse adjustment rod 47. The fixing seat 41 is fixedly connected to the longitudinal adjustment rod 48. Through the sliding of the transverse adjustment rod 47 and the longitudinal adjustment rod 48, the fixing seat 41 can be driven to adjust the position according to the tire model in the horizontal direction. Specifically, the transverse adjustment rod 47 is fixed to the rotating rod 46 by bolts, and the longitudinal adjustment rod 48 is fixed to the transverse adjustment rod 47 by bolts.

[0084] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A stretch film packaging machine, characterized in that: It comprises a supporting and conveying mechanism (1), wherein the supporting and conveying mechanism (1) is used for supporting and conveying tires; and a wrapping and packaging mechanism (2), wherein the wrapping and packaging mechanism (2) is used for wrapping a packaging film on a tire; The wrapping packaging mechanism (2) comprises a C-shaped frame (22), the axis of the C-shaped frame (22) is horizontal and arranged along the conveying direction of the tire, and the C-shaped frame (22) rotates around its own axis; and a packaging film quick-change assembly (23), wherein the packaging film quick-change assembly (23) is arranged on the C-shaped frame (22); The packaging film quick-change assembly (23) comprises a fixing column (231), wherein the fixing column (231) is detachably connected to the C-shaped frame (22) and the axis of the fixing column (231) is parallel to the axis of the C-shaped frame (22); A rotating column (232), wherein the rotating column (232) is sleeved outside the fixed column (231) and is rotatably connected to the rotating column (232); A telescopic sheet (233), wherein the telescopic sheet (233) comprises a plurality of telescopic sheets (233) arranged around the axis of the rotating column (232), and the telescopic sheet (233) is embedded in the rotating column (232) on a side close to the rotating column (232) and is capable of sliding in the rotating column (232) along a radial direction of the rotating column (232); and an elastic member (238), each expansion piece (233) corresponds to at least one elastic member (238), when the packaging film roll is arranged outside the plurality of expansion pieces (233), the elastic member (238) is squeezed and applies an elastic force to the expansion piece (233) in a direction away from the axis of the rotating column (232).

2. The stretch film packaging machine according to claim 1, characterized in that: A retaining ring (234) is provided at one end of the rotating column (232) close to the C-shaped frame (22), and the diameter of the retaining ring (234) is larger than the diameter of the rotating column (232); A fixing ring (235) is provided at one end of the rotating column (232) away from the retaining ring (234), wherein the fixing ring (235) is coaxial with the rotating column (232) and has a diameter smaller than the inner diameter of the packaging film roll; Two clamping plates (2331) are fixedly connected to the two ends of the portion of the telescopic piece (233) embedded in the rotating column (232); A clamping groove (239) is provided on the inner side of the retaining ring (234) and the inner side of the fixing ring (235), and the two clamping plates (2331) are respectively clamped into the two clamping grooves (239). The clamping plates (2331) cooperate with the clamping grooves (239) to prevent the telescopic sheet (233) from being separated from the rotating column (232) outwards.

3. A stretch film packaging machine according to claim 2, characterized in that: An inclined surface is provided at one end of the expansion piece (233) away from the retaining ring (234), and an end of the inclined surface away from the retaining ring (234) is inclined in a direction close to the axis of the rotating column (232).

4. The stretch film packaging machine according to claim 3, characterized in that: A receiving groove (2321) is provided outside the rotating column (232) corresponding to each telescopic piece (233), and a side of the telescopic piece (233) close to the axis of the rotating column (232) is embedded in the receiving groove (2321); Each expansion piece (233) corresponds to a plurality of elastic members (238); the plurality of elastic members (238) corresponding to the same expansion piece (233) are arranged along the axis of the rotating column (232); a plurality of mounting grooves (2322) are provided on one side of the accommodating groove (2321) close to the axis of the rotating column (232); the plurality of mounting grooves (2322) respectively correspond to the plurality of elastic members (238); and the elastic members (238) are arranged in the corresponding mounting grooves (2322).

5. The stretch film packaging machine according to claim 4, characterized in that: The supporting and conveying mechanism (1) comprises a supporting frame (11); And a supporting roller (12), wherein a plurality of the supporting rollers (12) are arranged along the feeding and discharging direction of the tire, and the supporting rollers (12) are configured as self-powered rollers.

6. The stretch film packaging machine according to claim 5, characterized in that: The supporting and conveying mechanism (1) further comprises a lifting frame (13), wherein the lifting frame (13) can be lifted up and down at the supporting frame (11); and a ball (14), wherein a plurality of the ball (14) are arranged on the top of the lifting frame (13), and the ball (14) can pass through two adjacent support rollers (12) upwards under the action of the lifting frame (13) to support the tire.

7. The stretch film packaging machine according to claim 6, characterized in that: It also includes a sliding frame (32), wherein two sliding frames (32) are provided and are respectively located on both sides above the support frame (11), and the sliding frames (32) slide along the width direction of the support frame (11); Positioning rollers (33), the positioning rollers (33) are vertically arranged and rotatably connected to the sliding frame (32), each sliding frame (32) is rotatably connected to two positioning rollers (33), and the two positioning rollers (33) on the same sliding frame (32) are arranged along the arrangement direction of the support rollers (12).

8. The stretch film packaging machine according to claim 7, characterized in that: A crossbeam (31) is arranged above the support frame (11), and the two sliding frames (32) slide on the crossbeam (31); A rotating rod (34), the rotating rod (34) is rotatably connected to the cross beam (31), and the rotating rod (34) is horizontal and rotates around a vertical axis at a middle position in the length direction; And connecting rods (35), one end of the two connecting rods (35) is respectively hinged on the two ends of the rotating rod (34), and the other ends of the two connecting rods (35) are respectively hinged on the two sliding frames (32).

9. The stretch film packaging machine according to claim 8, characterized in that: It also includes a tape adsorption and cutting device, which is arranged on the support frame (11) and adjacent to the C-shaped frame (22); The adhesive tape adsorption and cutting device comprises a fixing seat (41); A tape holder (42), wherein the tape holder (42) is rotatably connected to the fixing seat (41), the tape roll is fixed to the tape holder (42) and the tape is unwound by the rotation of the tape holder (42); A cutter (44), wherein the cutter (44) is used to cut the adhesive tape; A pressure roller (43), the pressure roller (43) being arranged between the cutter (44) and the tape roll to press the tape onto the tire; An adsorption seat (49), the adsorption seat (49) being arranged between the cutter (44) and the pressure roller (43), the adsorption seat (49) being provided with adsorption holes, and the adhesive tape being able to be adsorbed on the adsorption seat (49) under the negative pressure of the adsorption holes; and an air suction pipe connected to the adsorption seat (49) to provide negative pressure for the adsorption hole.

10. The stretch film packaging machine according to claim 9, characterized in that: The adsorption seat (49) is fixed on the cutter (44) so ​​that the adsorption seat (49) can move with the cutter (44) to adsorb the adhesive tape cut by the cutter (44) onto the adsorption seat (49).

Images