Tightness-adjustable food packaging bag printing device

Abstract

The utility model belongs to the technical field of printing devices, and particularly relates to a tightness-adjustable food packaging bag printing device which comprises a frame, a supporting roller is rotationally connected into the frame, a conveying belt is arranged on the supporting roller, a motor is fixedly installed at the front end of the frame, and a conveying belt is arranged on the conveying belt. A rotating shaft of the motor penetrates through the frame and is rotationally connected with the frame, a supporting plate is fixedly connected to the interior of the frame, a tensioning mechanism is arranged on the supporting plate, a support is fixedly connected to the upper end of the frame, a limiting mechanism is arranged on the support, and a printing head is arranged on the support. According to the scheme, the bidirectional screw and the top plate are rotated to do threaded motion, then the top plate elastically extrudes the sliding plate through the spring, then the connecting rod deflects, the tensioning roller is pressed downwards, the conveying belt is kept in a tensioning state, and the situation that the printing effect is affected due to looseness is avoided.

Description

Technical Field

[0001] This solution belongs to the field of printing equipment technology, specifically relating to a food packaging bag printing device with adjustable tightness. Background Technology

[0002] Utility model patent CN219600722U discloses a coding device for a food packaging bag printing machine, including a frame. A conveyor belt is movably mounted on the inner side of the frame. Fixed frames are fixedly mounted on the left and right sides of the top of the frame. A flattening roller is positioned above the conveyor belt between the two fixed frames, and mounting shafts are fixedly mounted on the left and right sides of the flattening roller. This utility model allows the top of the packaging bag to contact the outer side of the flattening roller. A packaging bag of a certain thickness can then apply an upward force to the flattening roller. The movable block, under the action of the slot, moves upward relative to the fixed frame. The movable rod moves upward and compresses the limiting spring until the flattening roller moves upward. During this process, the outer side of the flattening roller maintains constant contact with the packaging bag, applying friction to the top of the bag to achieve flattening, ensuring a smooth surface and reducing the impact of wrinkles on the coding.

[0003] However, the device has some shortcomings in use. The conveyor belt will loosen after long-term use, which will affect the conveying efficiency of the device. At the same time, the packaging bags will slide relative to the conveyor belt during operation. Utility Model Content

[0004] The purpose of this solution is to provide a food packaging bag printing device with adjustable tightness to solve the problem that the conveyor belt of the device will loosen after long-term use, which will affect the conveying efficiency of the device. At the same time, the packaging bag will slip relative to the conveyor belt during operation.

[0005] To achieve the above objectives, this solution provides a food packaging bag printing device with adjustable tightness, including a frame, a support roller rotatably connected inside the frame, a conveyor belt mounted on the support roller, a motor fixedly mounted at the front end of the frame, the motor's shaft passing through the frame and rotatably connected to the frame, a support plate fixedly connected inside the frame, a tensioning mechanism mounted on the support plate, a bracket fixedly connected to the upper end of the frame, a limit mechanism mounted on the bracket, and a printing head mounted on the bracket.

[0006] The principle of this solution is as follows: During use, the packaging bag is placed on the conveyor belt, and the screw is manually rotated. The rotation of the screw and the pressure plate create a threaded motion, which in turn causes the pressure spring to be elastically pressed down, which in turn causes the hanger to be elastically pressed down, and the pressure roller to be elastically pressed down. By rotating the screw and the pressure plate to create a threaded motion, the pressure spring is pressed against the hanger, which allows the packaging bag to be elastically squeezed and moved on the conveyor belt, ensuring that the movement of the packaging bag does not cause relative slippage. Then, the double-acting screw and the top plate are manually rotated to create a threaded motion, which causes the top plate to move. The top plate drives the spring to move, and the spring elastically presses the sliding plate, which causes the connecting rod to deflect, which in turn causes the tension roller to be pressed down, thus keeping the conveyor belt taut and preventing loosening from affecting the printing effect.

[0007] The technical effect of this solution is that by rotating the bidirectional screw and the top plate to make a spiral motion, the top plate is elastically squeezed by the spring, which causes the connecting rod to deflect, which in turn causes the tension roller to be pressed down, thus keeping the conveyor belt taut and preventing loosening from affecting the printing effect.

[0008] By rotating the lead screw and pressure plate to make a threaded motion, the compression spring is activated on the hanger, which in turn allows the packaging bag to be elastically squeezed and moved on the conveyor belt, ensuring that the movement of the packaging bag does not cause relative slippage.

[0009] Furthermore, the tensioning mechanism includes a bidirectional screw, which is mounted inside the bracket via bearings. A sliding plate is movably connected to the outer side of the bidirectional screw, and the sliding plate is slidably connected to the support plate. A top plate is threadedly connected to the outer side of the bidirectional screw, and the top plate is slidably connected to the support plate. A spring is provided on the outer side of the bidirectional screw. A connecting rod is hinged to the lower end of the sliding plate, and a wheel frame is hinged to the end of the connecting rod. By rotating the bidirectional screw and the top plate in a threaded motion, the top plate elastically presses the sliding plate through the spring, causing the connecting rod to deflect, which in turn presses down the tensioning roller, thus keeping the conveyor belt taut and preventing loosening that could affect the printing effect.

[0010] Furthermore, one end of the spring is fixedly connected to the top plate, and the other end of the spring is fixedly connected to the slide plate. By setting the spring, the slide plate is elastically compressed.

[0011] Furthermore, a tension roller is rotatably connected inside the wheel frame, and the tension roller is slidably connected to the conveyor belt. The conveyor belt is tensioned by the tension roller.

[0012] Furthermore, the limiting mechanism includes a lead screw, which is mounted inside the frame via bearings. A hanger is movably connected to the outer side of the lead screw, and a pressure plate is threadedly connected to the outer side of the lead screw. A compression spring is also provided on the outer side of the lead screw, and a pressure roller is mounted on the hanger. By rotating the lead screw and pressure plate to perform threaded movement, the compression spring is actuated on the hanger, allowing the packaging bag to be elastically squeezed and moved on the conveyor belt, ensuring that the movement of the packaging bag does not result in relative slippage.

[0013] Furthermore, one end of the compression spring is fixedly connected to the pressure plate, and the other end of the compression spring is fixedly connected to the hanger. By setting the compression spring, the hanger is elastically compressed.

[0014] Furthermore, a guide rod is fixedly connected to the upper end of the hanger, and the guide rod is slidably connected to the pressure plate. The guide rod guides the movement of the hanger. Attached Figure Description

[0015] Figure 1 This is a perspective view of the overall structure of a food packaging bag printing device with adjustable tightness according to an embodiment of the present invention;

[0016] Figure 2 This invention provides an adjustable-tightness food packaging bag printing apparatus. Figure 1 A bottom view;

[0017] Figure 3 This invention provides an adjustable-tightness food packaging bag printing apparatus. Figure 1 A three-dimensional diagram of the tensioning mechanism in the diagram;

[0018] Figure 4 This invention provides an adjustable-tightness food packaging bag printing apparatus. Figure 1 A partial three-dimensional diagram of the structure.

[0019] The following detailed explanation illustrates the specific implementation methods:

[0020] The reference numerals in the accompanying drawings of the instruction manual include: 1. Frame; 2. Support roller; 3. Conveyor belt; 4. Motor; 5. Support plate; 6. Tensioning mechanism; 7. Bracket; 8. Limiting mechanism; 9. Printing head; 61. Bidirectional screw; 62. Slide plate; 63. Top plate; 64. Spring; 65. Connecting rod; 66. Wheel frame; 67. Tensioning roller; 81. Lead screw; 82. Hanger; 83. Pressure plate; 84. Compression spring; 85. Guide rod; 86. Pressure roller. Detailed Implementation

[0021] The implementation examples are basically as follows Figure 1 , Figure 2As shown, this embodiment provides a food packaging bag printing device with adjustable tightness, including a frame 1, a support roller 2 rotatably connected inside the frame 1, a conveyor belt 3 provided on the support roller 2, a motor 4 fixedly installed at the front end of the frame 1, the rotating shaft of the motor 4 passing through the frame 1 and rotatably connected to the frame 1, a support plate 5 fixedly connected inside the frame 1, a tensioning mechanism 6 provided on the support plate 5, a bracket 7 fixedly connected at the upper end of the frame 1, a limit mechanism 8 provided on the bracket 7, and a printing head 9 provided on the bracket 7.

[0022] like Figure 1 , Figure 2 , Figure 3 As shown, the tensioning mechanism 6 includes a double-ended screw 61. The double-ended screw 61 is mounted inside the bracket 7 via bearings. A slide plate 62 is movably connected to the outer side of the double-ended screw 61. The slide plate 62 is slidably connected to the support plate 5. A top plate 63 is threadedly connected to the outer side of the double-ended screw 61. The top plate 63 is slidably connected to the support plate 5. A spring 64 is provided on the outer side of the double-ended screw 61. One end of the spring 64 is fixedly connected to the top plate 63, and the other end of the spring 64 is fixedly connected to the slide plate 62. By providing the spring 64, the slide plate 62 is elastically compressed. The lower end of the slide plate 62 is hinged to a connecting rod 65, and the end of the connecting rod 65 is hinged to a wheel frame 66. The wheel frame 66 is rotatably connected to a tension roller 67, which is slidably connected to the conveyor belt 3. By setting the tension roller 67, the conveyor belt 3 is tensioned. By rotating the bidirectional screw 61 and the top plate 63 to make threaded movements, the top plate 63 is elastically squeezed by the spring 64, which causes the connecting rod 65 to deflect, which in turn causes the tension roller 67 to be pressed down, thus keeping the conveyor belt 3 in a taut state and preventing loosening from affecting the printing effect.

[0023] like Figure 1 , Figure 2 , Figure 4 As shown, the limiting mechanism 8 includes a lead screw 81. The lead screw 81 is installed inside the frame 1 via bearings. A hanger 82 is movably connected to the outside of the lead screw 81. A pressure plate 83 is threadedly connected to the outside of the lead screw 81. A compression spring 84 is provided on the outside of the lead screw 81. One end of the compression spring 84 is fixedly connected to the pressure plate 83, and the other end of the compression spring 84 is fixedly connected to the hanger 82. By providing the compression spring 84, the hanger 82 is elastically compressed. A guide rod 85 is fixedly connected to the upper end of the hanger 82. The guide rod 85 is slidably connected to the pressure plate 83. By providing the guide rod 85, the movement of the hanger 82 is guided. A pressure roller 86 is provided on the hanger 82. By rotating the lead screw 81 and the pressure plate 83 to make threaded movements, the compression spring 84 acts on the hanger 82, thereby allowing the packaging bag to be elastically squeezed and moved on the conveyor belt 3, ensuring that the movement of the packaging bag does not produce relative slippage.

[0024] The specific implementation process of this utility model is as follows: In use, the packaging bag is placed on the conveyor belt 3, and the screw 81 is manually rotated. The rotation of the screw 81 and the pressure plate 83 make a threaded movement, which causes the compression spring 84 to be elastically pressed down, which in turn causes the hanger 82 to be elastically pressed down, which in turn causes the pressure roller 86 to be elastically pressed down. By rotating the screw 81 and the pressure plate 83 to make a threaded movement, the compression spring 84 is pressed against the hanger 82, which allows the packaging bag to be elastically squeezed and moved on the conveyor belt 3, ensuring that the movement of the packaging bag will not cause relative slippage. Then, the double-acting screw 61 and the top plate 63 are manually rotated to make a threaded movement, which causes the top plate 63 to move. The top plate 63 drives the spring 64 to move, and the spring 64 elastically squeezes the slide plate 62, which causes the connecting rod 65 to deflect, which in turn causes the tension roller 67 to be pressed down, thus keeping the conveyor belt 3 in a taut state and preventing loosening from affecting the printing effect.

[0025] By rotating the bidirectional screw 61 and the top plate 63 to make threaded movements, the top plate 63 elastically squeezes the slide plate 62 through the spring 64, which in turn causes the connecting rod 65 to deflect, which in turn causes the tension roller 67 to be pressed down, thus keeping the conveyor belt 3 in a taut state and preventing loosening from affecting the printing effect.

[0026] By rotating the lead screw 81 and the pressure plate 83 to make a threaded movement, the compression spring 84 is actuated on the hanger 82, which allows the packaging bag to be elastically squeezed and moved on the conveyor belt 3, ensuring that the movement of the packaging bag will not cause relative slippage.

[0027] The above descriptions are merely embodiments of this utility model, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A printing device for food packaging bags with adjustable tightness, comprising a frame, characterized in that: The frame is internally rotatably connected to a support roller, on which a conveyor belt is mounted. A motor is fixedly mounted at the front end of the frame, and the motor's shaft passes through the frame and is rotatably connected to it. A support plate is fixedly connected inside the frame, and a tensioning mechanism is mounted on the support plate. A bracket is fixedly connected to the upper end of the frame, and a limit mechanism is mounted on the bracket. A printing head is mounted on the bracket.

2. The printing device for the food packaging bag with adjustable tightness according to claim 1, characterized in that: The tensioning mechanism includes a bidirectional screw. The bidirectional screw is installed inside the bracket via bearings. A slide plate is movably connected to the outer side of the bidirectional screw. The slide plate and the support plate are slidably connected. A top plate is threadedly connected to the outer side of the bidirectional screw. The top plate and the support plate are slidably connected. A spring is provided on the outer side of the bidirectional screw. A connecting rod is hinged to the lower end of the slide plate. A wheel frame is hinged to the end of the connecting rod.

3. The printing device for the food packaging bag with adjustable tightness according to claim 2, characterized in that: One end of the spring is fixedly connected to the top plate, and the other end of the spring is fixedly connected to the sliding plate.

4. The printing device for the food packaging bag with adjustable tightness according to claim 2, characterized in that: The tension roller is rotatably connected inside the wheel frame, and the tension roller is slidably connected to the conveyor belt.

5. The printing device for the stretchable food packaging bag according to claim 1, wherein: The limiting mechanism includes a lead screw, which is installed inside the frame via bearings. A hanger is movably connected to the outside of the lead screw, and a pressure plate is threadedly connected to the outside of the lead screw. A compression spring is provided on the outside of the lead screw, and a pressure roller is provided on the hanger.

6. The printing device for a stretchable food packaging bag according to claim 5, wherein: One end of the compression spring is fixedly connected to the pressure plate, and the other end of the compression spring is fixedly connected to the hanger.

7. The printing device for the stretchable food packaging bag according to claim 5, wherein: A guide rod is fixedly connected to the upper end of the hanger, and the guide rod is slidably connected to the pressure plate.

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