Ink-jet printer for bread packaging

Abstract

The utility model relates to the related field of ink-jet printing machines, in particular to an ink-jet printing machine for bread packaging, which comprises a support frame, an intermittent belt conveyor, a fixing frame, an ink-jet printing machine body, an electric push rod, a lifting frame, an opening, a U-shaped frame, a compression roller, a connecting rod, a bidirectional cylinder, a transmission rod, a strip-shaped hole and the like. According to the bread packaging machine, the pressing roller is arranged, the electric push rod drives the lifting frame to move downwards, the lifting frame drives the U-shaped frame and the pressing roller to move downwards, so that the pressing roller moves downwards to make contact with the upper surface of a packaging bag, the connecting rod drives the U-shaped frame to swing outwards, the U-shaped frame drives the pressing roller to swing outwards, and the pressing roller extrudes and pulls the bread packaging bag when swinging outwards; the fold part of the bread packaging bag is flattened, and the fold on the packaging bag is reduced, so that the position deviation of the code spraying machine when the code spraying machine sprays codes on the packaging bag is reduced, the code spraying of the packaging bag is more accurate, and the code spraying quality of the packaging bag is improved.

Description

Technical Field

[0001] This utility model relates to the field of inkjet printers, and in particular to an inkjet printer for bread packaging. Background Technology

[0002] Bread is a common food made from flour, water, and other ingredients (such as yeast, salt, and sugar) through fermentation, kneading, shaping, and baking. During the production and processing of bread, various information such as production date and batch number need to be noted on the packaging. Therefore, a special inkjet printer is needed to print the production date and batch number of the bread on the packaging. This helps consumers understand the production time of the product and also facilitates traceability management for manufacturers and regulatory authorities.

[0003] When printing codes on bread packaging bags, they are usually transported to the coding machine via a conveyor belt. However, bread packaging bags may become wrinkled due to their material or vibration during transport. Wrinkles on bread packaging bags can easily cause the coding position to deviate, resulting in inaccurate coding and reduced coding quality. Summary of the Invention

[0004] Therefore, in order to overcome the above-mentioned shortcomings, this utility model provides a coding machine for bread packaging to solve the above-mentioned technical problems.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a coding machine for bread packaging, comprising a support frame, an intermittent belt conveyor installed on the top inner side of the support frame, a fixed frame fixedly mounted on the top outer side of the support frame, and a coding machine body located above the intermittent belt conveyor detachably mounted on the top inner side of the fixed frame. An electric push rod is installed at each of the left and right ends of the top inner side of the fixed frame, and the bottom piston rods of the two electric push rods are respectively connected to the left and right ends of a lifting frame slidably mounted inside the fixed frame.

[0006] The lifting frame has an opening facing the inkjet printer body, and two U-shaped frames are set below the lifting frame. A pressure roller is rotatably installed in each U-shaped frame, and a connecting rod that is offset from the opening is installed at the front and rear ends of the top of each U-shaped frame. The end of the connecting rod away from the U-shaped frame is rotatably connected to the bottom of the lifting frame.

[0007] The bottom of the lifting frame is equipped with a bidirectional cylinder that is offset from the opening. A transmission rod is installed on the piston rod at each of the left and right ends of the bidirectional cylinder. The two transmission rods extend into the strip holes opened on the rear end faces of the left and right connecting rods respectively.

[0008] Preferably, the outer diameter of the pressure roller is greater than the inner width of the U-shaped frame, and the length of the pressure roller is greater than the inner length of the opening.

[0009] Preferably, a reflective infrared sensor is installed on the inner top surface of the fixed frame, and a sensing plate that cooperates with the reflective infrared sensor is installed on the top surface of the lifting frame.

[0010] Preferably, a guide rod is fixedly installed on the inner top surface of the fixed frame, and the guide rod is movably inserted into the inner side of the guide cylinder installed on the top surface of the lifting frame. A set of guide rods and guide cylinders are provided at each of the left and right ends of the top of the lifting frame.

[0011] Preferably, the transmission rod has a cylindrical structure, and the outer diameter of the transmission rod is much smaller than the inner length of the strip hole.

[0012] The beneficial effects of this utility model are:

[0013] This invention incorporates a pressure roller. An electric push rod drives a lifting frame downwards, which in turn moves a U-shaped frame and the pressure roller downwards. The pressure roller then contacts the upper surface of the packaging bag. A connecting rod drives the U-shaped frame to swing outwards, which in turn causes the pressure roller to swing outwards. As the pressure roller swings outwards, it squeezes and pulls the bread packaging bag, flattening the wrinkles. By reducing wrinkles, the invention helps minimize positional deviations during coding, resulting in more accurate coding and improved coding quality. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a front view cross-sectional structural diagram of the fixing frame of this utility model;

[0016] Figure 3 This is a schematic diagram of the lifting frame structure from below.

[0017] The components include: support frame-1, intermittent belt conveyor-2, fixed frame-3, inkjet printer body-4, electric push rod-5, lifting frame-6, opening-7, U-shaped frame-8, pressure roller-9, connecting rod-10, double-acting cylinder-11, transmission rod-12, strip hole-13, reflective infrared sensor-14, sensing sheet-15, guide rod-16, and guide cylinder-17. Detailed Implementation

[0018] To further explain the technical solution of this utility model, a detailed description is provided below through specific embodiments.

[0019] like Figure 1As shown, this utility model provides a coding machine for bread packaging, including a support frame 1 and an intermittent belt conveyor 2 installed on the top inner side of the support frame 1. The intermittent belt conveyor 2 is the prior art, which can intermittently drive the bread packaging bag on the belt to be intermittently transported by the intermittent belt conveyor 3. A fixing frame 3 is fixedly installed on the top outer side of the support frame 1, and the coding machine body 4 located above the intermittent belt conveyor 2 is locked and fixed on the top inner side of the fixing frame 3.

[0020] like Figure 2 and Figure 3 As shown, in this embodiment, an electric push rod 5 is locked and fixed at each of the left and right ends of the top inner side of the fixed frame 3. The bottom piston rods of the two electric push rods 5 are respectively connected to the left and right ends of the lifting frame 6 that is slidably installed inside the fixed frame 3. The lifting frame 6 is driven to move vertically up and down inside the fixed frame 3 by the two electric push rods 5.

[0021] The lifting frame 6 has an opening 7 facing the inkjet printer body 4, so that the output end of the inkjet printer body 4 can pass through the opening 7 to print the code on the bread packaging bag. There are two U-shaped frames 8 below the lifting frame 6. A pressure roller 9 is rotatably installed in each U-shaped frame 8. A connecting rod 10 that is offset from the opening 7 is installed at the front and rear ends of the top of each U-shaped frame 8.

[0022] The end of the connecting rod 10 away from the U-shaped frame 8 is rotatably connected to the bottom of the lifting frame 6. The connecting rod 10 can swing left and right at the bottom of the lifting frame 6, thereby driving the U-shaped frame 8 to swing synchronously, so that the U-shaped frame 8 drives the pressure roller 9 to swing and apply an outward pulling force to the packaging bag.

[0023] The bottom end face of the lifting frame 6 is locked with a double-acting cylinder 11 that is offset from the opening 7. A transmission rod 12 is installed on the piston rods at both ends of the double-acting cylinder 11. The two transmission rods 12 are respectively movably inserted into the strip holes 13 opened at the rear end faces of the left and right connecting rods 10, so that the connecting rods 10 can swing at the bottom of the lifting frame 6 by cooperating with the strip holes 13 when the transmission rods 12 move horizontally.

[0024] Among them, the outer diameter of the pressure roller 9 is larger than the inner width of the U-shaped frame 8, and the length of the pressure roller 9 is larger than the inner length of the opening 7, so that the pressure roller 9 can stably contact the packaging bag and apply pressure to the packaging bag;

[0025] The transmission rod 12 is cylindrical, and its outer diameter is much smaller than the inner length of the strip hole 13, which makes it easier for the transmission rod 12 to move horizontally and stably drive the connecting rod 10 to rotate at the bottom of the lifting frame 6 in conjunction with the strip hole 13.

[0026] In this embodiment, a reflective infrared sensor 14 is installed on the inner top surface of the fixed frame 3, and a sensing plate 15 that cooperates with the reflective infrared sensor 14 is installed on the top surface of the lifting frame 6, so that the position of the lifting frame 6 can be detected by the reflective infrared sensor 14 and the sensing plate 15, thereby indirectly detecting the position of the pressure roller 9.

[0027] In this embodiment, a guide rod 16 is fixedly installed on the inner top surface of the fixed frame 3. The guide rod 16 is movably inserted into the inner side of the guide cylinder 17 installed on the top surface of the lifting frame 6. A set of guide rods 16 and guide cylinders 17 are provided at the left and right ends of the top of the lifting frame 6. When the lifting frame 6 moves vertically, it drives the guide cylinder 17 to move vertically along the guide rod 16, so as to provide auxiliary positioning for the lifting frame 6 through the guide cylinder 17 and the guide rod 16, thereby improving the stability of the lifting frame 6 during the movement process.

[0028] Specifically, the intermittent belt conveyor 2, the inkjet printer body 4, the electric push rod 5, and the reflective infrared sensor 14 are connected to an external control device, while the bidirectional cylinder 11 is connected to an external pneumatic device. By placing the bread packaging bag containing bread on the intermittent belt conveyor 2, the intermittent belt conveyor 2 is started to drive the packaging bag to move intermittently until the packaging bag is transported into the fixed frame 3. The electric push rod 5 is started to drive the lifting frame 6 to move downward. The reflective infrared sensor 14 is started to emit infrared light of a specific wavelength. Most of these infrared lights are reflected back by the sensing plate 15. Based on the change in the intensity of the received reflected light, the reflective infrared sensor 14 can determine whether the sensing plate 15 is in its detection range, and thus determine the specific position of the lifting frame 6, and indirectly determine the specific position of the pressure roller 9. Since the height of the bread packaging bag is relatively fixed, when the reflective infrared sensor 14 determines that the pressure roller 9 is in contact with the upper surface of the packaging bag, the control device controls the electric push rod 5 to stop working.

[0029] Then, the bidirectional cylinder 11 is controlled to drive the transmission rod 12 to move outward. When the transmission rod 12 moves outward, it cooperates with the strip hole 13 to push the connecting rod 10 to rotate outward. The connecting rod 10 drives the U-shaped frame 8 to rotate outward. The U-shaped frame 8 drives the pressure roller 9 to rotate outward. The two pressure rollers 9 will apply an outward pulling force to the packaging bag, so that the pleated part of the packaging bag is stretched and unfolded. Then, the inkjet printer body 4 is started to print the code on the packaging bag. After printing, the bidirectional cylinder 11 and the pressure roller 9 are reset, and the intermittent belt conveyor 2 continues to drive the bread packaging bag to be conveyed.

[0030] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model 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 utility model should be included within the protection scope of the present utility model.

Claims

1. A coding machine for bread packaging, comprising a support frame, an intermittent belt conveyor mounted on the top inner side of the support frame, a fixed frame fixedly mounted on the top outer side of the support frame, and a coding machine body located above the intermittent belt conveyor detachably mounted on the top inner side of the fixed frame. Its features are, An electric push rod is installed at each of the left and right ends of the top inner side of the fixed frame, and the bottom piston rods of the two electric push rods are respectively connected to the left and right ends of the lifting frame that is slidably installed inside the fixed frame. The lifting frame has an opening facing the inkjet printer body, and two U-shaped frames are set below the lifting frame. A pressure roller is rotatably installed in each U-shaped frame, and a connecting rod that is offset from the opening is installed at the front and rear ends of the top of each U-shaped frame. The end of the connecting rod away from the U-shaped frame is rotatably connected to the bottom of the lifting frame. The bottom of the lifting frame is equipped with a bidirectional cylinder that is offset from the opening. A transmission rod is installed on the piston rod at each of the left and right ends of the bidirectional cylinder. The two transmission rods extend into the strip holes opened on the rear end faces of the left and right connecting rods respectively.

2. The inkjet printer for bread packaging according to claim 1, characterized in that: The outer diameter of the pressure roller is greater than the inner width of the U-shaped frame, and the length of the pressure roller is greater than the inner length of the opening.

3. The inkjet printer for bread packaging according to claim 1, characterized in that: A reflective infrared sensor is installed on the inner top surface of the fixed frame, and a sensing plate that cooperates with the reflective infrared sensor is installed on the top surface of the lifting frame.

4. The inkjet printer for bread packaging according to claim 1, characterized in that: A guide rod is fixedly installed on the inner top surface of the fixed frame. The guide rod is movably inserted into the inner side of the guide cylinder installed on the top surface of the lifting frame. A set of guide rods and guide cylinders are provided at each of the left and right ends of the top of the lifting frame.

5. The inkjet printer for bread packaging according to claim 1, characterized in that: The transmission rod has a cylindrical structure, and its outer diameter is much smaller than the inner length of the strip hole.

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