Heat shrink packaging machine

Abstract

The utility model relates to the technical field of packaging machines, and discloses a thermal shrinkage packaging machine which comprises a base and self-locking universal wheels movably installed at the positions, close to the four corners, of the bottom of the base, an L-shaped plate is fixedly installed at the position, close to the left side, of the rear side of the base, and a pulling assembly is installed on the rear side of the L-shaped plate. Vertical plates are fixedly mounted at the positions, close to the four corners, of the top of the base correspondingly, through mutual cooperation of a hydraulic cylinder, a pushing plate, an L-shaped supporting plate, a servo motor A, a movable gear, a rack plate A, a rack plate B, a fixed rod and a movable base, the two sides of a film can be pulled, the phenomenon that the bottom is wrinkled during conveying, and the subsequent heat shrinkage effect is affected is avoided, and the production efficiency is improved. And through mutual cooperation of a servo motor B, a threaded rod, a flat plate, a threaded sleeve, a sliding plate, a movable plate, a pressing plate and a fixed plate, the two sides of the film can be clamped and fixed, unfolding of pulling work is facilitated, and operation is convenient and fast.

Description

Technical Field

[0001] This utility model relates to the technical field of packaging machines, specifically a heat shrink packaging machine. Background Technology

[0002] Heat shrink packaging involves wrapping and heat-sealing materials with a heat-shrinkable plastic film, then passing the packaged items through a heating chamber. The film shrinks and adheres tightly to the items at a specific temperature, forming a neat and aesthetically pleasing package. It is suitable for packaging various items, such as furniture drawer slides.

[0003] Existing heat shrink packaging machines typically use belts to transport products to a heat shrink box for heat shrink packaging. However, before transport, the product is laminated by a laminating device, which can cause wrinkles in the laminated film during transport, thus affecting the shrinking effect.

[0004] Therefore, we propose a heat shrink packaging machine to solve the problems mentioned above. Utility Model Content

[0005] The purpose of this invention is to provide a heat shrink packaging machine to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a heat shrink packaging machine, comprising a base and self-locking universal wheels movably installed at the bottom of the base near the four corners. An L-shaped plate is fixedly installed on the rear side of the base near the left side, and a pulling component is installed on the rear side of the L-shaped plate. Vertical plates are fixedly installed on the top of the base near the four corners. Rotating rollers are respectively arranged on the top of the base near the upper left and right sides. Several conveying strips are equally spaced on the outer side of the rotating rollers. A shrink box body is fixedly installed on the top of the base near the right side, and a lifting component is installed on the top of the base near the right side. Conveying ports are respectively opened on the lower left and right sides of the shrink box body, and heat preservation curtains are fixedly installed in the inner cavity of the conveying ports.

[0007] The lifting assembly includes a movable plate located on the top right side of the base and guide plates fixedly installed on the front and rear sides of the movable plate. The movable plate is located between several conveyor bars. Guide openings are respectively opened on the front and rear sides of the shrink box body near the middle. The outer sides of the guide plates are slidably installed in the inner cavities of adjacent guide openings. A push plate is fixedly installed on the rear side of the rear guide plate. A drive motor B is provided on the rear side below the bottom of the push plate. A cam is fixedly installed on the output end of the drive motor B. Several top plates are equally spaced above the top of the movable plate. Vertical rods are fixedly installed on the bottom of the top plates, and the lower ends of the vertical rods are fixedly installed on the movable plate.

[0008] Preferably, a limiting plate is provided above the top of the push plate, and the front side of the limiting plate is fixedly installed on the shrink box body. Limiting rods are slidably installed on the limiting plate near the left and right sides, and the lower ends of the limiting rods are fixedly installed on the limiting plate. Springs are sleeved on the outer sides of the limiting rods, and the two ends of the springs are fixedly installed on the push plate and the limiting plate, respectively.

[0009] Preferably, a support frame is fixedly installed on the rear side of the drive motor B, and the front side of the support frame is fixedly installed on the base.

[0010] Preferably, a rotating rod is fixedly installed through the middle of the rotating roller, and the front and rear ends of the rotating rod extend movably through to the outer side of the adjacent vertical plate. The output ends of the rotating rod are respectively fixedly sleeved with a first single-groove wheel and a second single-groove wheel, and a belt is sleeved on the outer side of the first single-groove wheel and the second single-groove wheel. A drive motor A is provided at the front end of the right rotating rod, and the output end of the drive motor A is fixedly connected to the front end of the right rotating rod. An L-shaped support plate is fixedly installed on the front side of the drive motor A, and the rear side of the L-shaped support plate is fixedly installed on the base.

[0011] Preferably, the pulling assembly includes a hydraulic cylinder fixedly installed in the middle of the rear side of the L-shaped plate. The power end of the hydraulic cylinder extends movably through to the outer side of the L-shaped plate and is fixedly installed with a push plate. An L-shaped support plate is fixedly installed on the front side of the push plate near the top. A servo motor A is fixedly installed on the front side of the inner side of the L-shaped support plate. A movable gear is fixedly installed at the output end of the servo motor A. A rack plate A and a rack plate B are respectively meshed at the top and bottom of the movable gear. The rear sides of rack plates A and B are respectively slidably installed on the push plate. Fixed rods are fixedly installed on the front sides of rack plates A and B near opposite sides. Movable seats are fixedly installed at the front ends of the fixed rods.

[0012] Preferably, a servo motor B is fixedly installed on the rear side of the movable seat near the top, and a threaded rod is fixedly installed on the output end of the servo motor B. Two flat plates are fixedly installed on the rear side of the movable seat. The flat plates are arranged vertically. The lower end of the threaded rod extends movably through to the outer side of the adjacent flat plate and is rotatably installed on the top of the adjacent flat plate. A threaded sleeve is threadedly installed on the output shaft of the threaded rod. A sliding plate is fixedly installed on the front side of the threaded sleeve. A sliding opening is opened on the movable seat. The outer side of the sliding plate is slidably installed in the inner cavity of the adjacent sliding opening and a movable plate is fixedly installed on it. A pressure plate is fixedly installed on the bottom of the movable plate. A fixed plate is provided below the pressure plate. The rear side of the fixed plate is fixedly installed on the adjacent movable seat.

[0013] Preferably, T-shaped rods are slidably installed on the movable plate near the rear side, and the lower ends of the T-shaped rods are fixedly installed on adjacent fixed plates.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. Through the cooperation of components such as hydraulic cylinder, push plate, L-shaped support plate, servo motor A, movable gear, rack plate A, rack plate B, fixed rod and moving seat, the two sides of the film can be stretched to avoid bottom wrinkles during transportation, which would affect the subsequent heat shrinkage effect. Through the cooperation of components such as servo motor B, threaded rod, flat plate, threaded sleeve, sliding plate, moving plate, pressure plate and fixed plate, the two sides of the film can be clamped and fixed, which is conducive to the stretching work and convenient operation.

[0016] 2. Through the cooperation of components such as the movable plate, guide plate, push plate, limit plate, limit rod, spring, drive motor B, support frame, cam, top plate and vertical rod, several push plates can be driven to move up and down to lift the product, so that the bottom of the product on the conveyor strip is heated and shrinks, thereby improving the packaging quality of the product. Attached Figure Description

[0017] Figure 1 This is a perspective view of the entire utility model;

[0018] Figure 2 This is a partial cross-sectional perspective view of the present invention;

[0019] Figure 3 This is a partial rear perspective view of the present invention;

[0020] Figure 4 This is a partial rear cross-sectional perspective view of the present invention.

[0021] Figure 5 This is a partial cross-sectional perspective view of the present invention.

[0022] Figure 6 This is a partial three-dimensional view of the L-shaped plate of this utility model;

[0023] Figure 7 For the present utility model Figure 5 Enlarged view of point A in the middle;

[0024] Figure 8 For the present utility model Figure 6 Enlarged view of section B in the middle.

[0025] In the diagram: 1. Base; 2. Self-locking caster wheel; 3. L-shaped plate; 4. Pulling assembly; 41. Hydraulic cylinder; 42. Push plate; 43. L-shaped support plate; 44. Servo motor A; 45. Movable gear; 46. Rack plate A; 47. Rack plate B; 48. Fixed rod; 49. Moving seat; 491. Servo motor B; 492. Threaded rod; 493. Flat plate; 494. Threaded sleeve; 495. Sliding plate; 496. Moving plate; 497. Pressure plate; 498. Fixed... Fixed plate; 499, T-shaped rod; 5, vertical plate; 6, rotating roller; 61, rotating rod; 62, belt; 63, drive motor A; 64, L-shaped support plate; 7, conveyor bar; 8, shrink box body; 9, lifting assembly; 91, movable plate; 92, guide plate; 93, push plate; 931, limiting plate; 932, limiting rod; 933, spring; 94, drive motor B; 941, support frame; 95, cam; 96, top plate; 961, vertical rod; 10, heat preservation curtain. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Example 1: Please refer to Figure 1-8 A heat shrink packaging machine includes a base 1 and self-locking casters 2 movably installed at the bottom of the base 1 near the four corners. An L-shaped plate 3 is fixedly installed on the rear side of the base 1 near the left side, and a pulling component 4 is installed on the rear side of the L-shaped plate 3. Vertical plates 5 are fixedly installed on the top of the base 1 near the four corners. Rotating rollers 6 are respectively arranged on the top of the base 1 near the upper left and right sides. Several conveying strips 7 are equally spaced on the outer side of the rotating rollers 6. A shrink box body 8 is fixedly installed on the top of the base 1 near the right side, and a lifting component 9 is installed on the top of the base 1 near the right side. Conveying ports are respectively opened on the lower left and right sides of the shrink box body 8, and heat preservation curtains 10 are fixedly installed in the inner cavity of the conveying ports. The lifting component 9 can drive the product to move back and forth up and down, while the pulling component 4 can pull the two sides of the film to avoid wrinkles.

[0028] The lifting assembly 9 includes a movable plate 91 located on the top right side of the base 1 and guide plates 92 fixedly installed on the front and rear sides of the movable plate 91. The movable plate 91 is located between several conveyor bars 7. Guide openings are provided on the front and rear sides of the shrink box body 8 near the middle. The outer sides of the guide plates 92 are slidably installed in the inner cavities of adjacent guide openings. A push plate 93 is fixedly installed on the rear side of the rear guide plate 92. A drive motor B94 is provided on the rear side below the bottom of the push plate 93. A cam 95 is fixedly installed on the output end of the drive motor B94. Several top plates 96 are evenly spaced above the top of the movable plate 91. Vertical rods 961 are fixedly installed on the bottom of the top plates 96. The lower ends of the vertical rods 961 are fixedly installed on the movable plate 91, which can drive the product to move back and forth up and down, so that the bottom of the product on the conveyor bar 7 is heated and shrinks, thereby improving the packaging quality of the product.

[0029] A limiting plate 931 is provided above the top of the push plate 93, and the front side of the limiting plate 931 is fixedly installed on the shrink box body 8. Limiting rods 932 are slidably installed on the limiting plate 931 near the left and right sides respectively. The lower ends of the limiting rods 932 are fixedly installed on the limiting plate 931 respectively. Springs 933 are respectively sleeved on the outer side of the limiting rods 932, and the two ends of the springs 933 are fixedly installed on the push plate 93 and the limiting plate 931 respectively, so as to play the role of moving and resetting the push plate 93.

[0030] A support frame 941 is fixedly installed on the rear side of the drive motor B94, and the front side of the support frame 941 is fixedly installed on the base 1, which serves to support the drive motor B94.

[0031] Rotating rods 61 are fixedly installed through the middle of the rotating roller 6, and the front and rear ends of the rotating rods 61 extend movably through to the outer side of the adjacent vertical plate 5. The output ends of the rotating rods 61 are fixedly sleeved with the first single groove wheel and the second single groove wheel, and the outer sides of the first single groove wheel and the second single groove wheel are jointly sleeved with a belt 62. The front end of the right rotating rod 61 is provided with a drive motor A63, the output end of the drive motor A63 is fixedly connected to the front end of the right rotating rod 61, and the front side of the drive motor A63 is fixedly installed with an L-shaped support plate 64. The rear side of the L-shaped support plate 64 is fixedly installed on the base 1, which can drive the rotating rollers 6 on both sides to rotate synchronously.

[0032] In this embodiment: During use, the laminated product is conveyed onto the conveyor strip 7, and the running drive motor A63 drives the rotating rod 61 on the right side to rotate. At this time, the belt 62 drives the rotating rods 61 on both sides to rotate synchronously. The rotation of the rotating rods 61 drives the rotating rollers 6 on both sides to rotate, thus causing the conveyor strip 7 to rotate. When the conveyor strip 7 rotates, it conveys the product. When the product is conveyed into the shrink box body 8, it can be heat-shrinked. When the product is conveyed into the shrink box body 8, the drive motor B94 can be started. When the drive motor B94 runs, it drives the cam 95 to rotate. When the cam 95 rotates to contact the push plate 93, it will pull... The push plate 93 moves upward and compresses the spring 933. When the push plate 93 moves upward, it also drives the movable plate 91 to move upward through the guide plate 92. When the movable plate 91 moves upward, it drives several top plates 96 to move upward, thus ejecting the product. When the cam 95 rotates away from the push plate 93, the push plate 93 will return to its original position under the action of the spring 933, thereby driving the top plates 96 to move downward and return to their original position. As the cam 95 rotates continuously, it drives the top plates 96 to move up and down back and forth, which in turn drives the product to move up and down back and forth. This causes the bottom of the product on the conveyor strip 7 to shrink due to heat, thereby improving the packaging quality of the product.

[0033] Example 2: This example is an improvement on Example 1. For details, please refer to [link / reference]. Figure 1-4 and Figure 6-8 The tensioning assembly 4 includes a hydraulic cylinder 41 fixedly installed in the middle of the rear side of the L-shaped plate 3. The power end of the hydraulic cylinder 41 extends through to the outer side of the L-shaped plate 3 and is fixedly installed with a push plate 42. An L-shaped support plate 43 is fixedly installed on the front side of the push plate 42 near the top. A servo motor A44 is fixedly installed on the front side of the inner side of the L-shaped support plate 43. A movable gear 45 is fixedly installed at the output end of the servo motor A44. A rack plate A46 and a rack plate B47 are respectively meshed at the top and bottom of the movable gear 45. The rear sides of the rack plates A46 and B47 are respectively slidably installed on the push plate 42. A fixing rod 48 is fixedly installed on the front side of the rack plates A46 and B47 near opposite sides. A movable seat 49 is fixedly installed at the front end of the fixing rod 48. The movable seats 49 on both sides can be driven to move in opposite directions to achieve tensioning of both sides of the membrane.

[0034] Servo motors B491 are fixedly installed on the rear side of the movable base 49 near the top, and threaded rods 492 are fixedly installed on the output ends of the servo motors B491. Two flat plates 493 are fixedly installed on the rear side of the movable base 49. The flat plates 493 are arranged vertically. The lower ends of the threaded rods 492 extend movably through to the outer side of the adjacent flat plates 493 and are rotatably installed on the top of the adjacent flat plates 493. Threaded sleeves 494 are threadedly installed on the output shafts of the threaded rods 492. Sliding plates 495 are fixedly installed on the front side of the threaded sleeves 494. Sliding openings are opened on the movable base 49. The outer sides of the sliding plates 495 are slidably installed in the inner cavities of the adjacent sliding openings, and movable plates 496 are fixedly installed on them. Pressure plates 497 are fixedly installed on the bottom of the movable plates 496. Fixed plates 498 are set below the pressure plates 497. The rear sides of the fixed plates 498 are fixedly installed on the adjacent movable bases 49, which can clamp and fix the two sides of the membrane, facilitating the unfolding of the stretching operation.

[0035] T-shaped rods 499 are slidably installed on the movable plate 496 near the rear side, and the lower ends of the T-shaped rods 499 are fixedly installed on the adjacent fixed plates 498, which serve to guide the movement of the movable plate 496.

[0036] In this embodiment: when the product is conveyed onto the conveyor bar 7, the drive motor A63 can be paused, and then the hydraulic cylinder 41 can be activated. The hydraulic cylinder 41 will move the push plate 42 forward, causing the pressure plates 497 and the fixing plate 498 on both sides to be positioned on either side of the film on the product (of course, the fixing plate 498 should be positioned below the film and above the conveyor bar 7; this positional relationship can be achieved by adjusting the installation height of the fixing plate 498 so that it can be inserted between the film and the conveyor bar 7). At this time, the servo motor B491 can be activated. The servo motor B491 will drive the adjacent threaded rod 492 to rotate, and the rotation of the threaded rod 492 will drive the adjacent threaded sleeve 494 to move downwards. As the threaded sleeve 494 moves downwards, it will pass through the adjacent... The sliding plate 495 drives the upper moving plate 496 to move downwards synchronously. When the moving plate 496 moves downwards, it drives the pressure plate 497 to move downwards, thus cooperating with the adjacent fixed plate 498 to clamp and fix the two sides of the film. After clamping and fixing, the servo motor A44 can be started. When the servo motor A44 runs, it drives the movable gear 45 to rotate. When the movable gear 45 rotates, it drives the rack plate A46 and rack plate B47 to move away from each other. This allows the adjacent fixed rod 48 to drive the moving seats 49 on both sides to move in opposite directions, thus pulling the two sides of the film and preventing wrinkles from appearing at the bottom during transportation. After pulling is completed, the operation can be reversed to restore the push plate 42 and pressure plate 497, and then the drive motor A63 can continue to run, which is beneficial for the subsequent heat shrink treatment of the product.

[0037] The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0038] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A heat shrink packaging machine, comprising a base (1) and self-locking casters (2) movably mounted on the bottom of the base (1) near the four corners, characterized in that: An L-shaped plate (3) is fixedly installed on the rear side of the base (1) near the left side, and a pulling component (4) is installed on the rear side of the L-shaped plate (3). Vertical plates (5) are fixedly installed on the top of the base (1) near the four corners. Rotating rollers (6) are respectively set on the top of the base (1) near the upper left and right sides. Several conveying strips (7) are equally spaced on the outer side of the rotating rollers (6). A shrink box body (8) is fixedly installed on the top of the base (1) near the right side, and a lifting component (9) is installed on the top of the base (1) near the right side. Conveying ports are respectively opened on the lower left and right sides of the shrink box body (8), and heat insulation curtains (10) are fixedly installed in the inner cavity of the conveying ports. The lifting assembly (9) includes a movable plate (91) located on the right side of the top of the base (1) and guide plates (92) fixedly installed on the middle of the front and rear sides of the movable plate (91). The movable plate (91) is located between several conveyor bars (7). Guide openings are respectively provided on the front and rear sides of the shrink box body (8) near the middle. The outer side of the guide plate (92) is slidably installed in the inner cavity of the adjacent guide opening. A push plate (93) is fixedly installed on the rear side of the rear guide plate (92). A drive motor B (94) is provided on the rear side below the bottom of the push plate (93). A cam (95) is fixedly installed at the output end of the drive motor B (94). Several top plates (96) are equally spaced above the top of the movable plate (91). Vertical rods (961) are fixedly installed at the bottom of the top plates (96). The lower ends of the vertical rods (961) are fixedly installed on the movable plate (91).

2. The heat shrink packaging machine according to claim 1, characterized in that: A limiting plate (931) is provided above the top of the push plate (93), and the front side of the limiting plate (931) is fixedly installed on the shrink box body (8). Limiting rods (932) are slidably installed on the limiting plate (931) near the left and right sides respectively. The lower ends of the limiting rods (932) are fixedly installed on the limiting plate (931) respectively. Springs (933) are respectively sleeved on the outer side of the limiting rods (932), and the two ends of the springs (933) are fixedly installed on the push plate (93) and the limiting plate (931) respectively.

3. The heat shrink packaging machine according to claim 1, characterized in that: The rear side of the drive motor B (94) is fixedly mounted with a support frame (941), and the front side of the support frame (941) is fixedly mounted on the base (1).

4. A heat shrink packaging machine according to claim 1, characterized in that: Rotating rods (61) are fixedly installed through the middle of the rotating roller (6), and the front and rear ends of the rotating rods (61) extend movably through to the outside of the adjacent vertical plates (5). The output ends of the rotating rods (61) are fixedly sleeved with the first single groove wheel and the second single groove wheel, and the outer sides of the first single groove wheel and the second single groove wheel are jointly sleeved with a belt (62). The front end of the right rotating rod (61) is provided with a drive motor A (63), the output end of the drive motor A (63) is fixedly connected to the front end of the right rotating rod (61), and the front side of the drive motor A (63) is fixedly installed with an L-shaped support plate (64), and the rear side of the L-shaped support plate (64) is fixedly installed on the base (1).

5. A heat shrink packaging machine according to claim 1, characterized in that: The pulling assembly (4) includes a hydraulic cylinder (41) fixedly installed in the middle of the rear side of the L-shaped plate (3). The power end of the hydraulic cylinder (41) extends through to the outside of the L-shaped plate (3) and is fixedly installed with a push plate (42). An L-shaped support plate (43) is fixedly installed on the front side of the push plate (42) near the top. A servo motor A (44) is fixedly installed on the front side of the inner side of the L-shaped support plate (43). A movable gear (45) is fixedly installed at the output end of the servo motor A (44). A rack plate A (46) and a rack plate B (47) are respectively meshed at the top and bottom of the movable gear (45). The rear sides of the rack plate A (46) and the rack plate B (47) are respectively slidably installed on the push plate (42). A fixing rod (48) is fixedly installed on the front side of the rack plate A (46) and the rack plate B (47) near the opposite side. A movable seat (49) is fixedly installed at the front end of the fixing rod (48).

6. A heat shrink packaging machine according to claim 5, characterized in that: Servo motors B (491) are fixedly installed on the rear side of the movable base (49) near the top, and threaded rods (492) are fixedly installed on the output ends of the servo motors B (491). Two flat plates (493) are fixedly installed on the rear side of the movable base (49), and the flat plates (493) are arranged vertically. The lower ends of the threaded rods (492) extend movably through to the outside of the adjacent flat plates (493) and are rotatably installed on the top of the adjacent flat plates (493). The output shafts of the threaded rods (492) are threadedly installed on the output shafts of the threaded rods (492). There is a threaded sleeve (494), and a sliding plate (495) is fixedly installed on the front side of the threaded sleeve (494). A sliding port is opened on the movable seat (49). The outer side of the sliding plate (495) is slidably installed in the inner cavity of the adjacent sliding port, and a movable plate (496) is fixedly installed on each of them. A pressure plate (497) is fixedly installed on the bottom of the movable plate (496), and a fixed plate (498) is provided below the pressure plate (497). The rear side of the fixed plate (498) is fixedly installed on the adjacent movable seat (49).

7. A heat shrink packaging machine according to claim 6, characterized in that: T-shaped rods (499) are slidably installed on the movable plate (496) near the rear side, and the lower ends of the T-shaped rods (499) are fixedly installed on the adjacent fixed plates (498).

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