Film connecting device for stretching food packaging film

Abstract

The invention belongs to the technical field of food packaging, and discloses a film connecting device for stretching a food packaging film, which comprises a U-shaped seat, four rectangular clamping plates symmetrically distributed in pairs are arranged in the U-shaped seat, and a heating strip is fixedly mounted on the upper surface of one rectangular clamping plate. A clamping mechanism used for driving the two corresponding rectangular clamping plates to move in the opposite directions to clamp the packaging film is arranged in the U-shaped base, and a linkage mechanism used for driving the rectangular clamping plates to rotate is arranged in the U-shaped base. By arranging the clamping mechanism, the two corresponding rectangular clamping plates can be driven to move in the opposite directions, so that the old packaging film is clamped by the two rectangular clamping plates, the new packaging film is clamped by the other two rectangular clamping plates, and by arranging the linkage assembly, after the new packaging film and the old packaging film are clamped, the new packaging film and the old packaging film are clamped, the new packaging film and the old packaging film are clamped, and then the new packaging film and the old packaging film are clamped. And the rectangular clamping plates on the left and right sides are driven to rotate in opposite directions.

Description

Technical Field

[0001] The invention belongs to the technical field of food packaging, in particular to a film joining device for stretching food packaging film. Background Art

[0002] Food packaging is an integral part of food commodities. It is one of the main projects in the food industry process. It protects food and prevents it from being damaged by biological, chemical, and physical external factors during the circulation process from leaving the factory to the hands of consumers. It can also have the function of maintaining the stable quality of the food itself. It is convenient for food consumption and is the first to show the appearance of food and attract consumers. It has value beyond material cost. Therefore, the food packaging process is also an inseparable part of the food manufacturing system engineering. However, the versatility of food packaging technology makes it a relatively independent system.

[0003] When packaging food with packaging film, when the packaging film on the reel is used up, a new packaging film roll needs to be replaced, and the new packaging film roll needs to be butted against the old packaging film roll; The existing packaging film splicing method is often that the staff stacks the new packaging film and the old packaging film together, and then heats and bonds them together through a heating device to complete the film splicing work. However, the disadvantage of the staff completing it manually is that the interface position of the packaging film is prone to wrinkling or misalignment, and the efficiency of manual film splicing is low. Summary of the invention

[0004] In order to solve the problem that manual film splicing is prone to wrinkling or dislocation as mentioned in the background art, the present invention provides a film splicing device for stretching food packaging film.

[0005] To achieve the above object, the present invention provides the following technical solutions: a film splicing device for stretching food packaging film, comprising a U-shaped seat, wherein four rectangular clamping plates symmetrically distributed in pairs are arranged in the U-shaped seat, and a heating strip is fixedly installed on the upper surface of one of the rectangular clamping plates; The U-shaped seat is provided with a clamping mechanism for driving two corresponding rectangular clamping plates to move in opposite directions to clamp the packaging film; A linkage mechanism for driving the rectangular clamping plate to rotate is provided in the U-shaped seat; The U-shaped seat is provided with a docking mechanism for driving the two rectangular clamping plates on the left and the two rectangular clamping plates on the right to move in relative directions.

[0006] Preferably, the clamping mechanism includes movable blocks which are laterally limited and slidably connected to two opposite inner side walls of the U-shaped seat and are symmetrically distributed in pairs, each of the movable blocks is rotatably connected to a ring shaft, the free end of the ring shaft is sleeved with a bearing frame, a rectangular rod is arranged in the bearing frame, a first spring rod passing through the ring shaft is arranged between the rectangular rod and the movable block, one end of the first spring rod is fixed to the rectangular rod, and the other end is rotatably connected to the movable block.

[0007] Preferably, the rectangular rod is sleeved with two symmetrically distributed rectangular sleeves that are slidably connected thereto, the supporting frame is telescopically plugged with two symmetrically distributed rectangular movable rods, the upper and lower sides of the rectangular sleeve are rotatably connected to the first connecting rod and the second connecting rod, and a V-shape is formed between the first connecting rod and the second connecting rod on the same side.

[0008] Preferably, two upper and lower adjacent first connecting rods are distributed in parallel and the free ends of the first connecting rods are rotatably connected to the supporting frame, two upper and lower adjacent second connecting rods are distributed in parallel and the free ends of the second connecting rods are rotatably connected to the rectangular movable rod, and the rectangular clamping plate is fixed on the rectangular movable rod.

[0009] Preferably, an electric telescopic rod is fixed on the side wall of the U-shaped seat, and the free end of the electric telescopic rod is fixedly installed with a rectangular frame located above the U-shaped seat, and second spring rods are vertically fixed at the four corners of the rectangular frame, and the lower end of the second spring rod is fixedly connected to a limiting plate.

[0010] Preferably, the limiting plate is inclined, and is inclined from top to bottom from a side close to the movable block to a side away from the movable block, and the limiting plate is against the rectangular rod.

[0011] Preferably, the linkage mechanism comprises a vertical rod integrally fixed on the limiting plate, a first rack is fixed on the surface of the vertical rod, and a first gear is sleeved on the annular shaft.

[0012] Preferably, the docking mechanism includes four mounting seats fixed on the opposite side walls of the U-shaped seat and symmetrically distributed in pairs, two coaxially fixed threaded rods are rotatably connected between two of the mounting seats, the threads on the two threaded rods are in opposite directions, and the four movable blocks are respectively mounted on the four threaded rods and threadedly connected thereto.

[0013] Preferably, a second gear coaxially fixed thereto is provided on the outer side of the threaded rod, an L-plate is fixed on the vertical rod, and a second rack is fixed on one side of the L-plate.

[0014] Preferably, a friction mechanism for rubbing the packaging film roll is arranged on the outer side of the U-shaped seat, and the friction mechanism includes two L-rods fixed on the U-shaped seat and symmetrically distributed, and the free ends of the two L-rods are telescopically plugged with the same friction plate, and a limit frame is fixedly connected to the friction plate, and a sliding rod extending into the limit frame is fixedly connected to the rectangular frame, and the upper end of the limit frame is vertical, and the lower end is wavy.

[0015] Compared with the prior art, the present invention has the following beneficial effects: By setting a clamping mechanism, the two corresponding rectangular clamping plates can be driven to move in opposite directions, so that two of the rectangular clamping plates clamp the old packaging film, and the other two rectangular clamping plates clamp the new packaging film; By setting a linkage component, after the new packaging film and the old packaging film are clamped, the rectangular clamping plates on the left and right sides are driven to rotate in relative directions, so that a part of the new packaging film and a part of the old packaging film are in a face-to-face state; By setting up a docking mechanism, after a part of the new packaging film and a part of the old packaging film are in a face-to-face state, the rectangular clamping plates on the left and right sides are driven to move in relative directions, so that a part of the new packaging film and a part of the old packaging film are pressed together, and then heated and bonded together by a heating strip to complete the film joining work. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a structural schematic diagram of the position of the limiting plate in the present invention; Figure 3 It is a structural schematic diagram of the first spring rod in the present invention in position; Figure 4 This is a schematic diagram of the internal structure of the U-shaped seat of the present invention; Figure 5 For the present invention Figure 4 A schematic diagram of the enlarged structure at A in the middle; Figure 6 It is a structural schematic diagram of the position of the threaded rod in the present invention; Figure 7 It is a structural schematic diagram of the position of the second spring rod in the present invention; Figure 8 For the present invention Figure 7 Schematic diagram of the enlarged structure at point B in the middle.

[0017] In the figure: 1, U-shaped seat; 2, rectangular clamping plate; 3, heating strip; 41, movable block; 42, annular shaft; 43, bearing frame; 44, rectangular rod; 45, first spring rod; 46, rectangular sleeve; 47, rectangular movable rod; 48, first connecting rod; 49, second connecting rod; 410, electric telescopic rod; 411, rectangular frame; 412, second spring rod; 413, limit plate; 51, vertical rod; 52, first rack; 53, first gear; 61, mounting seat; 62, threaded rod; 63, second gear; 64, L plate; 65, second rack; 71, L rod; 72, friction plate; 73, limit frame; 74, sliding rod. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] like Figures 1 to 3 As shown, the present invention provides a film joining device for stretching food packaging film, comprising a U-shaped seat 1, wherein four rectangular clamping plates 2 symmetrically distributed in pairs are arranged in the U-shaped seat 1, and a heating strip 3 is fixedly installed on the upper surface of one of the rectangular clamping plates 2; The U-shaped seat 1 is provided with a clamping mechanism for driving two corresponding rectangular clamping plates 2 to move in opposite directions to clamp the packaging film; The U-shaped seat 1 is provided with a linkage mechanism for driving the rectangular clamping plate 2 to rotate; The U-shaped seat 1 is provided with a docking mechanism for driving the two rectangular clamping plates 2 on the left and the two rectangular clamping plates 2 on the right to move in relative directions.

[0020] In the initial state, if Figure 1 The two rectangular clamping plates 2 on the left and the two rectangular clamping plates 2 on the right shown in the figure are both in a state of being away from each other, a new packaging film is placed between the two rectangular clamping plates 2 on the side close to the friction mechanism, and an old packaging film is placed between the other two rectangular clamping plates 2; The clamping mechanism drives the two corresponding rectangular clamping plates 2 to move in opposite directions, so that two of the rectangular clamping plates 2 clamp the old packaging film, and the other two rectangular clamping plates 2 close to the friction mechanism clamp the new packaging film; Then, the rectangular clamping plates 2 on the left and right sides are driven to rotate in relative directions through the linkage assembly, so that a part of the new packaging film and a part of the old packaging film are in a face-to-face state; Then, the rectangular clamping plates 2 on the left and right sides are driven to move in relative directions through the docking mechanism, so that a part of the new packaging film and a part of the old packaging film are pressed together, and finally heated and bonded together by the heating strip 3.

[0021] The clamping mechanism includes movable blocks 41 which are symmetrically distributed and laterally limited and slidably connected to two opposite inner side walls of the U-shaped seat 1. A ring shaft 42 is rotatably connected to the surface of each movable block 41. A bearing frame 43 is sleeved on the free end of the ring shaft 42. A rectangular rod 44 is arranged in the bearing frame 43. A first spring rod 45 that passes through the ring shaft 42 is arranged between the rectangular rod 44 and the movable block 41. One end of the first spring rod 45 is fixed on the rectangular rod 44, and the other end is rotatably connected to the movable block 41.

[0022] During use, the first spring rod 45 always exerts a pushing force on the rectangular rod 44 .

[0023] The rectangular rod 44 is sleeved with two symmetrically distributed rectangular sleeves 46 that are slidably connected thereto, and the carrying frame 43 is telescopically plugged with two symmetrically distributed rectangular movable rods 47, and the upper and lower sides of the rectangular sleeve 46 are rotatably connected to the first connecting rod 48 and the second connecting rod 49, and a V shape is formed between the first connecting rod 48 and the second connecting rod 49 on the same side; Two upper and lower adjacent first connecting rods 48 are distributed in parallel and the free ends of the first connecting rods 48 are rotatably connected to the supporting frame 43. Two upper and lower adjacent second connecting rods 49 are distributed in parallel and the free ends of the second connecting rods 49 are rotatably connected to the rectangular movable rod 47. The rectangular clamping plate 2 is fixed on the rectangular movable rod 47.

[0024] By adopting the above solution, the annular shaft 42 and the bearing frame 43 can drive the rectangular rod 44 and the first spring rod 45 to rotate when rotating; When the rectangular rod 44 moves toward the side close to the movable block 41, the two rectangular movable rods 47 can be driven to move away from each other through the rectangular sleeve 46, the first connecting rod 48 and the second connecting rod 49, and the corresponding two rectangular clamping plates 2 will also move away from each other, so as to place the packaging film between the two rectangular clamping plates 2; When the rectangular rod 44 moves away from the movable block 41, the two rectangular movable rods 47 can be driven to move toward each other through the rectangular sleeve 46, the first connecting rod 48 and the second connecting rod 49, and the corresponding two rectangular clamping plates 2 will also move in opposite directions, allowing the two rectangular clamping plates 2 to clamp the packaging film.

[0025] An electric telescopic rod 410 is fixed on the side wall of the U-shaped seat 1, and a rectangular frame 411 located above the U-shaped seat 1 is fixedly installed on the free end of the electric telescopic rod 410. Second spring rods 412 are vertically fixed at the four corners of the rectangular frame 411, and the lower end of the second spring rod 412 is fixedly connected to a limiting plate 413.

[0026] The limiting plate 413 is inclined, and is inclined from top to bottom from a side close to the movable block 41 to a side away from the movable block 41 . The limiting plate 413 is against the rectangular rod 44 .

[0027] By providing the limiting plate 413 , the upward and downward movement of the limiting plate 413 can control the horizontal position of the rectangular rod 44 .

[0028] like Figures 4 to 5 As shown, the linkage mechanism includes a vertical rod 51 integrally fixed on the limiting plate 413 , a first rack 52 is fixed on the surface of the vertical rod 51 , and a first gear 53 is sleeved on the annular shaft 42 .

[0029] In use, the first rack 52 can mesh with the first gear 53 after moving in the vertical direction.

[0030] like Figures 6 to 8 As shown, the docking mechanism includes four mounting seats 61 fixed on the opposite side walls of the U-shaped seat 1 and symmetrically distributed in pairs, two coaxially fixed threaded rods 62 are rotatably connected between the two mounting seats 61, the threads on the two threaded rods 62 are opposite in direction, and the four movable blocks 41 are respectively sleeved on the four threaded rods 62 and threadedly connected thereto.

[0031] A second gear 63 is coaxially fixed to the threaded rod 62 and disposed outside the threaded rod 62 . An L-plate 64 is fixed to the vertical rod 51 , and a second rack 65 is fixed to one side of the L-plate 64 .

[0032] The outer side of the U-shaped seat 1 is provided with a friction mechanism for rubbing the packaging film roll.

[0033] By providing a friction mechanism, the surface of the new packaging film roll can be rubbed to find the closing part of the packaging film, so that one side of the packaging film can be pulled out and clamped between two rectangular clamping plates 2 close to the side of the friction mechanism.

[0034] The friction mechanism includes two L-rods 71 ​​fixed on the U-shaped seat 1 and symmetrically distributed, and the free ends of the two L-rods 71 ​​are telescopically plugged with the same friction plate 72, and the friction plate 72 is fixedly connected to a limit frame 73, and the rectangular frame 411 is fixedly connected to a sliding rod 74 extending into the limit frame 73.

[0035] The upper end of the limiting frame 73 is vertical, and the lower end is wavy.

[0036] The working principle and use process of the present invention: In the initial state, the lower end of the vertical rod 51 abuts against the U-shaped seat 1, and the vertical rod 51, the L-plate 64, the second rack 65, the first rack 52 and the limit plate 413 cannot move downward any further; At this time, the two corresponding rectangular clamping plates 2 are in an open state; First, a new packaging film roll is attached to the friction plate 72, and the external reel drives the new packaging film roll to rotate; The rectangular frame 411 is driven downward by the electric telescopic rod 410, and the rectangular frame 411 can drive the sliding rod 74 to move downward accordingly. The sliding rod 74 can push the friction plate 72 to move back and forth in the horizontal direction through the limit frame 73. Since the friction plate 72 moves back and forth on the new packaging film roll, the closing part of the new packaging film roll can be rubbed, so as to find the closing part of the new packaging film roll; Pull one side of the new packaging film roll outward and place it between two rectangular clamping plates 2 close to the friction mechanism; At the same time, the tail side of the old packaging film is placed between the other two rectangular clamping plates 2; The rectangular frame 411 is driven to move upward by the electric telescopic rod 410, and the rectangular frame 411 can drive the limiting plate 413 to move upward with it through the second spring rod 412. When the limiting plate 413 gradually separates from the rectangular rod 44, the first spring rod 45 can push the rectangular rod 44 to move away from the movable block 41. Thus, the rectangular rod 44 drives the two rectangular movable rods 47 to move in opposite directions through the rectangular sleeve 46, the rectangular movable rod 47 and the first connecting rod 48, and the rectangular movable rod 47 can drive the rectangular clamping plates 2 to move accordingly, so that the corresponding two rectangular clamping plates 2 move in opposite directions. At this time, the new packaging film is clamped by two of the rectangular clamping plates 2 close to the friction mechanism, and the old packaging film is clamped by the other two rectangular clamping plates 2. Then the limiting plate 413 continues to drive the vertical rod 51 to move upward, and the vertical rod 51 can drive the first rack 52 fixed on its surface to move upward accordingly, and the first rack 52 can gradually mesh with the first gear 53 and drive the first gear 53 to rotate ninety degrees, and the first gear 53 drives the annular shaft 42 to rotate ninety degrees accordingly, and the annular shaft 42 drives the rectangular clamping plate 2 to rotate ninety degrees via the carrying frame 43; At this time, a part of the new packaging film and a part of the old packaging film are in a face-to-face state; Then the vertical rod 51 continues to move upward, driving the L plate 64 and the second rack 65 to move upward. The second rack 65 gradually meshes with the second gear 63 during the upward movement, and drives the second gear 63 to rotate. The second gear 63 can drive the threaded rod 62 coaxially fixed thereto to rotate, and the threaded rod 62 can drive the movable block 41 to move in the horizontal direction. Thereby, the two adjacent movable blocks 41 on the left and right move in relative directions, so that Figure 1 As shown in the figure, the two rectangular clamping plates 2 on the left and the two rectangular clamping plates 2 on the right are moved in relative directions, a part of the new packaging film and a part of the old packaging film are pressed together, and then heated and bonded together by the heating strip 3 to complete the film joining work.

[0037] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A film splicing device for stretching food packaging film, comprising a U-shaped seat (1), characterized in that: The U-shaped seat (1) is provided with four rectangular clamping plates (2) which are symmetrically distributed in pairs, and a heating strip (3) is fixedly mounted on the upper surface of one of the rectangular clamping plates (2); The U-shaped seat (1) is provided with a clamping mechanism for driving two corresponding rectangular clamping plates (2) to move in opposite directions to clamp the packaging film; The U-shaped seat (1) is provided with a linkage mechanism for driving the rectangular clamping plate (2) to rotate; The U-shaped seat (1) is provided with a docking mechanism for driving the two rectangular clamping plates (2) on the left and the two rectangular clamping plates (2) on the right to move in relative directions; The clamping mechanism comprises movable blocks (41) which are symmetrically distributed and are laterally limited and slidably connected to two opposite inner side walls of the U-shaped seat (1); a ring shaft (42) is rotatably connected to the surface of each movable block (41); a bearing frame (43) is sleeved on the free end of the ring shaft (42); a rectangular rod (44) is arranged in the bearing frame (43); a first spring rod (45) passing through the ring shaft (42) is arranged between the rectangular rod (44) and the movable block (41); one end of the first spring rod (45) is fixed to the rectangular rod (44) and the other end is rotatably connected to the movable block (41).

2. The film splicing device for stretch food packaging film according to claim 1, characterized in that: The rectangular rod (44) is sleeved with two symmetrically distributed rectangular sleeves (46) slidably connected thereto; the carrying frame (43) is telescopically plugged with two symmetrically distributed rectangular movable rods (47); the upper and lower sides of the rectangular sleeve (46) are rotatably connected to a first connecting rod (48) and a second connecting rod (49); a V-shape is formed between the first connecting rod (48) and the second connecting rod (49) located on the same side.

3. The film splicing device for stretching food packaging film according to claim 2, characterized in that: Two upper and lower adjacent first connecting rods (48) are arranged in parallel and the free ends of the first connecting rods (48) are rotatably connected to the bearing frame (43); two upper and lower adjacent second connecting rods (49) are arranged in parallel and the free ends of the second connecting rods (49) are rotatably connected to the rectangular movable rod (47); and the rectangular clamping plate (2) is fixed on the rectangular movable rod (47).

4. The film splicing device for stretching food packaging film according to claim 3, characterized in that: An electric telescopic rod (410) is fixed on the side wall of the U-shaped seat (1); a rectangular frame (411) located above the U-shaped seat (1) is fixedly mounted on the free end of the electric telescopic rod (410); second spring rods (412) are vertically fixed at the four corners of the rectangular frame (411); the lower end of the second spring rod (412) is fixedly connected to a limiting plate (413).

5. The film splicing device for stretch food packaging film according to claim 4, characterized in that: The limiting plate (413) is inclined, and is inclined from top to bottom from a side close to the movable block (41) to a side away from the movable block (41), and the limiting plate (413) is against the rectangular rod (44).

6. The film splicing device for stretch food packaging film according to claim 1, characterized in that: The linkage mechanism comprises a vertical rod (51) integrally fixed on the limiting plate (413), a first rack (52) being fixed on the surface of the vertical rod (51), and a first gear (53) being sleeved on the annular shaft (42).

7. The film splicing device for stretching food packaging film according to claim 6, characterized in that: The docking mechanism comprises four mounting seats (61) fixed on opposite side walls of the U-shaped seat (1) and symmetrically distributed in pairs, two coaxially fixed threaded rods (62) are rotatably connected between the two mounting seats (61), the threads on the two threaded rods (62) are in opposite directions, and the four movable blocks (41) are respectively sleeved on the four threaded rods (62) and threadedly connected thereto.

8. The film splicing device for stretching food packaging film according to claim 7, characterized in that: A second gear (63) is coaxially fixed to the threaded rod (62) and disposed outside the threaded rod (62). An L-plate (64) is fixed to the vertical rod (51), and a second rack (65) is fixed to one side of the L-plate (64).

9. The film splicing device for stretch food packaging film according to claim 4, characterized in that: A friction mechanism for rubbing the packaging film roll is arranged on the outside of the U-shaped seat (1), and the friction mechanism comprises two L-rods (71) fixed on the U-shaped seat (1) and symmetrically distributed, the free ends of the two L-rods (71) are telescopically plugged with a same friction plate (72), a limit frame (73) is fixedly connected to the friction plate (72), a sliding rod (74) extending into the limit frame (73) is fixedly connected to the rectangular frame (411), and the upper end of the limit frame (73) is vertical, and the lower end is wavy.

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