Plastic bag surface printing and sealing machine

Abstract

The utility model relates to a plastic bag surface printing sealing machine, in particular to the technical field of sealing devices. Comprising a conveying belt, a sealing box, a rotating motor, a screw, a first lifting support, a flattening assembly, a waste gas treatment box and a waste gas treatment mechanism. The problems that certain potential safety hazards and environmental pollution are generated due to the fact that some toxic gas is generated after the plastic bag is heated and melted and is not exhausted in time are solved; and the product quality can be further influenced when the hot-pressed edges of the plastic bags are not smoothed in time.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing devices, in particular to a plastic bag surface printing and sealing machine. Background Art

[0002] Plastic bag sealing machines are suitable for sealing and packaging plastic bags. They can seal various plastic films (PE, PP, aluminum film, etc.) and can also have indentation printing devices and counting functions. Specific plastic bag packaging machines can be divided into multi-functional continuous film sealing machines, plastic film sealing machines, and floor-standing film sealing machines.

[0003] When plastic bags are sealed, high temperatures are generally used. When heated and melted, the plastic bags will produce some toxic gases. If the human body is in this working environment for a long time, there will be certain safety hazards. In addition, when the plastic belt is sealed, the part of the plastic bag that has been hot-pressed will curl up, which will also cause curling around the hot pressing area. If it is not smoothed in time, it will further affect the quality of the sealed product. Utility Model Content

[0004] (1) Technical problems to be solved

[0005] The utility model provides a plastic bag surface printing and sealing machine, which overcomes the problem that some toxic gases will be generated when the plastic bag is heated and melted, which will cause certain safety hazards and environmental pollution if not removed in time; and the problem that the hot-pressed edges of the plastic bag will not be smoothed in time, which will further affect the product quality.

[0006] (2) Technical solution

[0007] In order to solve the above technical problems, the utility model provides a plastic bag surface printing and sealing machine, which includes a conveyor belt, a sealing box, a rotating motor, a screw, a first lifting bracket, a flattening component, an exhaust gas treatment box, and an exhaust gas treatment mechanism;

[0008] The conveyor belt is provided between the two sides of the frame; plastic bags are transmitted on the conveyor belt; a support leg is fixed above the middle part of the frame; a sealing box is provided above the support leg; a rotating motor is provided on each of the left and right sides of the top of the sealing box; the output shaft of the rotating motor passes through the top of the sealing box and its output end is coaxially connected to the screw; a moving block is threadedly connected to the screw; the first lifting bracket is fixed between the two moving blocks; the first lifting bracket is connected to a flattening assembly; the exhaust gas treatment box is provided on the top of the sealing box; the exhaust gas treatment mechanism is provided inside the exhaust gas treatment box;

[0009] Preferably, the flattening assembly includes a second lifting bracket, an electric push rod, a mounting plate, and a pressing roller;

[0010] The bottom of the first lifting bracket is connected to the second lifting bracket; the electric push rods are respectively provided on the left and right sides of the bottom of the second lifting bracket; the electric push rods are connected to mounting plates; and the pressure rollers are installed between the mounting plates.

[0011] Preferably, the first lifting bracket and the second lifting bracket are distributed in a cross shape.

[0012] Preferably, the exhaust gas treatment mechanism includes an air intake pipe, an induced draft fan, a water tank, a water inlet pipe, a transverse pipe, an atomizing nozzle, and a sewage pipe;

[0013] The air inlet pipe is connected between the bottom of the waste gas treatment box and the top of the sealing box; the induced exhaust fan is installed in the air inlet pipe; the water tank is provided on the outer wall of the waste gas treatment box; the water inlet pipe is provided on the top of the water tank; a valve switch is provided on the water inlet pipe; the water inlet pipe passes through the interior of the waste gas treatment box and the water outlet end is connected to the horizontal pipe; the atomizing nozzles are evenly arranged on the bottom of the horizontal pipe; the sewage pipe is provided at the bottom of the water inlet pipe.

[0014] Preferably, the exhaust gas treatment mechanism further includes an activated carbon filter layer and an exhaust pipe;

[0015] Three layers of activated carbon filter layers are provided above the interior of the exhaust gas treatment box, and the density of the activated carbon filter layers decreases from top to bottom; the exhaust pipe is provided on the top of the exhaust gas treatment box.

[0016] (3) Beneficial effects

[0017] The utility model provides a plastic bag surface printing and sealing machine, which overcomes the problem that some toxic gases will be generated when the plastic bag is heated and melted, which will cause certain safety hazards and environmental pollution if not removed in time; and the problem that the hot-pressed edges of the plastic bag will not be smoothed in time, which will further affect the product quality.

[0018] 1. The utility model is provided with a pressing roller at the bottom of the second lift, so that when the plastic bag is hot-pressed and sealed, the pressing roller can flatten the other parts of the plastic bag that are not hot-pressed and sealed, preventing them from curling and being hot-pressed together, thereby further improving the quality of the product.

[0019] 2. The utility model sets up an exhaust gas treatment mechanism, so that the toxic gas generated after hot pressing can be purified and removed in time, avoiding the toxic gas being directly discharged into the air, causing safety hazards to workers and environmental pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a plastic bag surface printing and sealing machine proposed by the utility model;

[0021] Figure 2 This is a schematic diagram of the structure inside the sealing box of the present invention;

[0022] Figure 3 This is a schematic diagram of the structure inside the exhaust gas treatment box of the present invention;

[0023] Figure 4 This is a schematic diagram of the structure of the connection between the screw rod and the first lifting bracket in the utility model;

[0024] Figure markings: 1-frame, 2-conveyor belt, 3-support leg, 4-sealing box, 5-rotating motor, 6-screw, 7-moving block, 8-first lifting bracket, 9-flattening assembly, 91-second lifting bracket, 92-electric push rod, 93-mounting plate, 94-pressing roller, 10-exhaust gas treatment box, 11-exhaust gas treatment mechanism, 111-intake pipe, 112-exhaust fan, 113-water tank, 114-water inlet pipe, 115-horizontal pipe, 116-atomizing nozzle, 117-drain pipe, 118-activated carbon filter layer, 119-exhaust pipe. DETAILED DESCRIPTION

[0025] The present invention will be further described with reference to the accompanying drawings and embodiments.

[0026] like Figures 1 to 4 As shown, the plastic bag surface printing and sealing machine described in the utility model includes a conveyor belt 2, a sealing box 4, a rotating motor 5, a screw 6, a first lifting bracket 8, a flattening component 9, an exhaust gas treatment box 10, and an exhaust gas treatment mechanism 11;

[0027] The conveyor belt 2 is provided between the two sides of the frame 1. Since the conveyor belt 2 belongs to the existing technology, the transmission technology is not overly described here; plastic bags are transmitted on the conveyor belt 2; a support leg 3 is fixed above the middle part of the frame 1; a sealing box 4 is provided above the support leg 3; a rotating motor 5 is provided on each side of the left and right sides of the top of the sealing box 4; the output shaft of the rotating motor 5 passes through the top of the sealing box 4 and the output end thereof is coaxially connected to the screw 6; a moving block 7 is threadedly connected to the screw 6; the first lifting bracket 8 is fixed between the two moving blocks 7; the first lifting bracket 8 is connected to the flattening component 9; the exhaust gas treatment box 10 is provided on the top of the sealing box 4; the exhaust gas treatment mechanism 11 is provided inside the exhaust gas treatment box 10;

[0028] The flattening assembly 9 includes a second lifting bracket 91, an electric push rod 92, a mounting plate 93, and a pressing roller 94;

[0029] The bottom of the first lifting bracket 8 is connected to the second lifting bracket 91 ; the electric push rods 92 are respectively provided on the left and right sides of the bottom of the second lifting bracket 91 ; the electric push rods 92 are connected to the mounting plates 93 ; the pressure rollers 94 are installed between the mounting plates 93 .

[0030] The first lifting bracket 8 and the second lifting bracket 91 are distributed in a cross shape.

[0031] The exhaust gas treatment mechanism 11 includes an air inlet pipe 111, an exhaust fan 112, a water tank 113, a water inlet pipe 114, a horizontal pipe 115, an atomizing nozzle 116, and a sewage pipe 117;

[0032] The air intake pipe 111 is connected between the bottom of the waste gas treatment box 10 and the top of the sealing box 4; the induced draft fan 112 is installed in the air intake pipe 111; the water tank 113 is provided on the outer wall of the waste gas treatment box 10; the top of the water tank 113 is provided with the water inlet pipe 114; the water inlet pipe 114 is provided with a valve switch; the water inlet pipe 114 passes through the interior of the waste gas treatment box 10 and the water outlet end is connected to the cross pipe 115; the atomizing nozzles 116 are evenly arranged at the bottom of the cross pipe 115; the bottom of the water inlet pipe 114 is provided with the sewage pipe 117.

[0033] The exhaust gas treatment mechanism 11 further includes an activated carbon filter layer 118 and an exhaust pipe 119;

[0034] Three layers of activated carbon filter layers 118 are provided on the upper part of the exhaust gas treatment box 10, and the density of the activated carbon filter layers 118 decreases from top to bottom; the exhaust gas is fully cleaned during the layer-by-layer filtration, so the toxic substances contained are also reduced successively; the exhaust pipe 119 is provided on the top of the exhaust gas treatment box 10.

[0035] Working principle: Plastic bags are placed on the conveyor belt 2 between the two sides of the frame 1, and then the motor is turned on to make the conveyor belt 2 transport the plastic bags; when the plastic bags to be sealed pass the bottom of the sealing box 4, the rotating motor 5 is turned on, so that the rotating motor 5 drives the screw 6 to rotate, and the rotation of the screw 6 further drives the moving block 7 threadedly connected to the screw 6 to move. During the movement of the moving block 7, the first lifting bracket 8 set between the two moving blocks 7 moves up and down;

[0036] When it is necessary to seal the plastic bag, the first lifting bracket 8 is moved first, and then the electric push rod 92 at the bottom of the second lifting bracket pushes the pressure roller 94 downward, so that the pressure roller 94 can roll the edge of the plastic bag flat while the hot pressing block performs heat pressure sealing on the plastic bag, preventing the edge from rolling up and being heated and pressed, thereby affecting product quality.

[0037] During hot pressing, the plastic bags inevitably produce some toxic gases after being heated. These gases enter the exhaust gas treatment box 10 through the induced draft fan 112 inside the air inlet pipe 111. By opening the valve on the water inlet pipe 114, cleaning liquid enters the exhaust gas treatment box 10 from the water inlet pipe 114 and is then sprayed out by the atomizing nozzle 116 at the bottom of the horizontal pipe 115, thereby spraying the inhaled exhaust gas. The exhaust gas then passes through three activated carbon filter layers 118 of varying concentrations before being discharged from the exhaust port. Matters not described in detail in this specification constitute prior art known to those skilled in the art.

[0038] The above-described embodiments merely represent preferred embodiments of the present invention, and their descriptions are relatively specific and detailed. However, the present invention is not limited to these embodiments. It should be noted that any improvements made without departing from the spirit of the present invention are within the scope of protection of the present invention. Therefore, the scope of protection of this utility model patent shall be based on the appended claims.

Claims

1. A plastic bag surface printing and sealing machine, characterized in that: It comprises a conveyor belt (2), a sealing box (4), a rotating motor (5), a screw (6), a first lifting bracket (8), a flattening component (9), an exhaust gas treatment box (10), and an exhaust gas treatment mechanism (11); The conveyor belt (2) is provided between the two sides of the frame (1); plastic bags are transmitted on the conveyor belt (2); a support leg (3) is fixed above the middle of the frame (1); a sealing box (4) is provided above the support leg (3); a rotating motor (5) is provided on each of the left and right sides of the top of the sealing box (4); the output shaft of the rotating motor (5) passes through the top of the sealing box (4) and its output end is coaxially connected to the screw (6); a moving block (7) is threadedly connected to the screw (6); the first lifting bracket (8) is fixed between the two moving blocks (7); the first lifting bracket (8) is connected to a flattening component (9); the exhaust gas treatment box (10) is provided on the top of the sealing box (4); the exhaust gas treatment mechanism (11) is provided inside the exhaust gas treatment box (10).

2. A plastic bag surface printing and sealing machine according to claim 1, characterized in that: The flattening assembly (9) comprises a second lifting bracket (91), an electric push rod (92), a mounting plate (93), and a pressing roller (94); The bottom of the first lifting bracket (8) is connected to the second lifting bracket (91); the electric push rods (92) are respectively provided on the left and right sides of the bottom of the second lifting bracket (91); the electric push rods (92) are connected to mounting plates (93); and the pressure rollers (94) are installed between the mounting plates (93).

3. A plastic bag surface printing and sealing machine according to claim 2, characterized in that: The first lifting bracket (8) and the second lifting bracket (91) are distributed in a cross shape.

4. A plastic bag surface printing and sealing machine according to claim 1, characterized in that: The waste gas treatment mechanism (11) includes an air inlet pipe (111), an induced draft fan (112), a water tank (113), a water inlet pipe (114), a transverse pipe (115), an atomizing nozzle (116), and a sewage discharge pipe (117); The air inlet pipe (111) is connected between the bottom of the waste gas treatment box (10) and the top of the sealing box (4); the induced draft fan (112) is installed in the air inlet pipe (111); the water tank (113) is provided on the outer wall of the waste gas treatment box (10); the water inlet pipe (114) is provided on the top of the water tank (113); a valve switch is provided on the water inlet pipe (114); the water inlet pipe (114) passes through the interior of the waste gas treatment box (10) and the water outlet end is connected to the transverse pipe (115); the atomizing nozzles (116) are evenly arranged at the bottom of the transverse pipe (115); and the sewage pipe (117) is provided at the bottom of the water inlet pipe (114).

5. A plastic bag surface printing and sealing machine according to claim 1, characterized in that: The exhaust gas treatment mechanism (11) further includes an activated carbon filter layer (118) and an exhaust pipe (119); Three layers of activated carbon filter layers (118) are provided above the interior of the waste gas treatment box (10), and the density of the activated carbon filter layers (118) decreases sequentially from top to bottom; the exhaust pipe (119) is provided at the top of the waste gas treatment box (10).

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