Splitting machine for plastic packaging bag production

Abstract

The utility model discloses a dividing and cutting machine for plastic packaging bag production, which comprises a working box arranged on a base plate, a conveying belt is arranged in the working box in a penetrating manner, an electric lifting frame is arranged above the conveying belt, a cutting knife is arranged at the bottom of the electric lifting frame, compression rollers are arranged on two sides of the cutting knife, and the compression rollers are arranged on the base plate. The top of each pressing roller is vertically connected with an electric push rod, an auxiliary pressing roller is arranged between the pressing rollers, the auxiliary pressing rollers are connected with a reciprocating linear motion mechanism, the reciprocating linear motion mechanism can be lifted in a servo mode, a photoelectric sensor is arranged over the auxiliary pressing rollers, a distance sensor is arranged over the pressing rollers, and the distance sensor is connected with the photoelectric sensor. A dust collection mechanism is further arranged on the auxiliary pressing roller. Compared with the prior art, by arranging the electric push rod, the pressing roller, the auxiliary pressing roller, the reciprocating linear motion mechanism, the photoelectric sensor and the distance sensor, the plastic bag feeding device has the advantages that the auxiliary pressing roller is utilized, tensile deformation of a plastic bag is avoided, and the quality of the plastic bag is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic packaging bag production, in particular to a slitting machine for plastic packaging bag production. Background Art

[0002] The existing patent (Announcement No.: CN219028721U) discloses an adjustable plastic bag slitting machine. The utility model uses an electric telescopic cylinder to drive the pressing cylinder to move down to squeeze and fix the plastic bag. After the fixation is completed, the pressing cylinder is driven by a motor to apply pressure to both sides of the product to make the wrinkles on the product surface disappear. However, in actual application, since the pressing cylinders on both sides are raised and lowered at the same time, both sides of the plastic bag will be pressed at the same time. The plastic bag itself is relatively soft. At this time, if the pressing cylinder is directly rotated, the plastic bag may be stretched and deformed, affecting the quality of the plastic bag, which is not conducive to actual production. For this reason, we propose a slitting machine for the production of plastic packaging bags. Utility Model Content

[0003] In order to solve the above problems, the utility model provides a slitting machine for producing plastic packaging bags.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A slitting machine for producing plastic packaging bags is designed, comprising a working box arranged on a base plate, a conveyor belt is passed through the working box, an electric lifting frame is arranged above the conveyor belt, a cutting knife is installed at the bottom of the electric lifting frame, pressure rollers driven by a reduction motor are arranged on both sides of the cutting knife, the tops of the pressure rollers are vertically connected to electric push rods installed in the working box, auxiliary pressure rollers installed in a supporting frame are arranged between the pressure rollers, a reciprocating linear motion mechanism is connected to the auxiliary pressure rollers, the reciprocating linear motion mechanism can be servo-lifted, a photoelectric sensor is arranged directly above the auxiliary pressure roller, a distance sensor is arranged directly above the pressure roller, and a dust suction mechanism is also arranged on the auxiliary pressure roller.

[0006] In the above scheme, conveying openings for conveyor belts to pass in and out are opened on both sides of the working box.

[0007] In the above scheme, the reciprocating linear motion mechanism includes a mounting frame with a cylinder connected to the bottom, a ball screw connected to the motor is installed in the mounting frame, a sliding seat is connected to the ball screw, and the sliding seat is connected to the support frame.

[0008] In the above scheme, the two ends of the mounting frame are provided with a sliding groove one fixed to the inner wall of the working box, and the two ends of the mounting frame are slidably connected to the sliding groove one.

[0009] In the above scheme, the reciprocating linear motion mechanism also includes a mounting frame 2 with a cylinder 2 connected to the bottom. The mounting frame 2 is arranged on the inner wall of the working box away from the ball screw. A limit rod is fixed inside the mounting frame 2. A sliding sleeve is provided on the movable sleeve of the limit rod. The sliding sleeve and the sliding seat are respectively connected to the support frame through connecting arms.

[0010] In the above scheme, two ends of the second mounting frame are provided with a second sliding groove fixed to the inner wall of the working box, and the second mounting frame is slidably connected to the second sliding groove.

[0011] In the above scheme, the dust collection mechanism includes a dust collection hood fixed to one side of the support frame, a dust collection box connected to the dust collection hood is installed on the top of the support frame, and the dust collection box is connected to the suction end of the vacuum pump through a filter.

[0012] The advantages and beneficial effects of the utility model are as follows: by arranging an electric push rod, a pressure roller, an auxiliary pressure roller, a reciprocating linear motion mechanism, a photoelectric sensor, and a distance sensor, before cutting, when the plastic bag arrives at the work station, the electric push rod is first used to lower the pressure roller close to the previous process to the surface of the conveyor belt to press one end of the plastic bag, and then the auxiliary pressure roller is lowered to the surface of the conveyor belt, and the reciprocating linear motion mechanism is used to make the auxiliary pressure roller move along the surface of the plastic bag to make the surface of the plastic bag flat, and when the photoelectric sensor detects the auxiliary pressure roller from above, the electric push rod is started to press the other end The pressure roller is lowered to the surface of the conveyor belt, and then the auxiliary pressure roller is raised. When the distance detected by the distance sensor reaches the set value, the electric lifting frame is started to lower the cutting knife to cut the plastic bag. Compared with the existing technology, the auxiliary pressure roller is used to avoid the excessive tension of the plastic bag when the pressure roller acts on the plastic bag at the same time, which causes the latter to stretch and deform, thereby ensuring the quality of the plastic bag. By setting a dust suction mechanism and using an air pump to provide suction, the suction hood can suck away the dust on the surface of the plastic bag to prevent the auxiliary pressure roller from damaging the surface of the plastic bag when working, thereby further ensuring the quality of the plastic bag. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0014] Figure 1 This is a structural schematic diagram of a slitting machine for producing plastic packaging bags proposed by the utility model;

[0015] Figure 2 This is a schematic diagram of the internal structure of a slitting machine for producing plastic packaging bags proposed by the utility model;

[0016] Figure 3 The utility model is a schematic structural diagram of a reciprocating linear motion mechanism of a slitting machine for producing plastic packaging bags.

[0017] In the figure: substrate 1, working box 2, conveying port 3, conveyor belt 4, electric lifting frame 5, cutting knife 6, photoelectric sensor 7, electric push rod 8, pressure roller 9, reduction motor 10, auxiliary pressure roller 11, support frame 12, mounting frame 13, ball screw 14, sliding seat 15, connecting arm 16, motor 17, sliding groove 18, cylinder 1 19, cylinder 2 20, mounting frame 2 21, limit rod 22, sliding sleeve 23, dust hood 24, dust collection box 25, vacuum pump 26, sliding groove 2 27, distance sensor 28. DETAILED DESCRIPTION

[0018] The following is a further description of the specific implementation of the present invention in conjunction with the accompanying drawings and embodiments. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0019] See also Figure 1-3 , the utility model provides a technical solution: a slitting machine for producing plastic packaging bags, comprising a working box 2 fixedly arranged on a base plate 1, a conveyor belt 4 is arranged inside the working box 2;

[0020] Furthermore, conveying openings 3 for the conveyor belt 4 to pass through and out are opened on both sides of the working box 2; the conveying openings 3 allow the conveyor belt 4 and the plastic bags on the conveyor belt 4 to pass through.

[0021] Specifically, by setting up a working box 2 and a conveyor belt 4, the conveyor belt 4 is used to transport the plastic bags to the working box 2 for cutting. When the plastic bags arrive at the work station, the conveyor belt 4 is stopped. After the cutting is completed, the conveyor belt 4 is restarted to transport the cut plastic bags to the next level process, thereby avoiding repeated loading and unloading operations, reducing the workload of the staff, saving time and effort, and helping to improve production efficiency.

[0022] An electric lifting frame 5 is arranged above the conveyor belt 4, a cutting knife 6 is installed at the bottom of the electric lifting frame 5, and pressure rollers 9 driven by a reduction motor 10 are arranged on both sides of the cutting knife 6. The output shaft of the reduction motor 10 is connected to the rotating shaft at the end of the pressure roller 9 to provide the power for rotation. The reduction motor 10 is used to reduce the rotation speed of the pressure roller 9, thereby reducing the friction between the pressure roller 9 and the surface of the plastic bag, and assisting in reducing the deformation degree of the plastic bag. The top of the pressure roller 9 is vertically connected to an electric push rod 8 installed in the working box 2, and the electric push rod 8 is fixed to the left and right inner walls of the working box 2 through a support plate. An auxiliary pressure roller 11 installed in a support frame 12 is arranged between the pressure rollers 9, and both ends of the auxiliary pressure roller 11 are movably connected to the support frame 12 through a support shaft. A reciprocating linear motion mechanism is connected to the auxiliary pressure roller 11, and the reciprocating linear motion mechanism can be servo-lifted; the reciprocating linear motion mechanism is used to make the auxiliary pressure roller 11 move along the surface of the plastic bag, thereby flattening the surface of the plastic bag, and at the same time, the lifting and lowering reciprocating linear motion mechanism makes the auxiliary pressure roller 11 move up and down to contact with or release the plastic bag;

[0023] Specifically, the electric lifting frame 5 includes a lifting plate, a cylinder 3 fixed to the inner wall of the top of the working box 2 is provided on the top of the lifting plate, a stroke end of the cylinder 3 is connected to the lifting plate, and a cutting knife 6 is fixed to the bottom of the lifting plate.

[0024] Further, the reciprocating linear motion mechanism includes a mounting frame 13 with a cylinder 19 connected to the bottom, the mounting frame 13 is connected to the stroke end of the cylinder 19, and the cylinder 19 is vertically mounted on the base plate 1, a ball screw 14 connected to the motor 17 is horizontally mounted in the mounting frame 13, a sliding seat 15 is connected to the ball screw 14, and the sliding seat 15 is connected to the support frame 12;

[0025] Specifically, the motor 17 is used to drive the ball screw 14 to rotate, thereby moving the sliding seat 15 along the surface of the ball screw 14, and finally causing the support frame 12 and the auxiliary pressure roller 11 to reciprocate left and right.

[0026] Furthermore, both ends of the mounting frame 13 are provided with a sliding groove 18 fixed to the inner wall of the working box 2, and both ends of the mounting frame 13 are slidably connected with the sliding groove 18; the sliding groove 18 is vertically arranged, and the end of the mounting frame 13 is provided with a slider 1 that cooperates with the sliding groove 18 to cooperate with the lifting movement of the auxiliary pressure roller 11.

[0027] Further, the reciprocating linear motion mechanism also includes a mounting frame 21 with a cylinder 20 connected to the bottom, the mounting frame 21 is connected to the stroke end of the cylinder 21, and the cylinder 20 is vertically mounted on the base plate 1, the mounting frame 21 is arranged on the inner wall of the working box 2 away from the ball screw 14, a limit rod 22 is horizontally fixed in the mounting frame 21, and a sliding sleeve 23 is provided on the movable sleeve of the limit rod 22, and the sliding sleeve 23 and the sliding seat 15 are respectively connected to the support frame 12 through the connecting arm 16, so that the support frame 12 moves under the drive of the sliding seat 15;

[0028] Specifically, since the reciprocating linear motion mechanism mainly relies on the ball screw 14 located on one side of the conveyor belt 4 to drive the auxiliary pressure roller 11 to move linearly, in order to provide sufficient support for the auxiliary pressure roller 11, a limit rod 22 is set to further limit the moving trajectory of the auxiliary pressure roller 11, thereby improving the working stability of the auxiliary pressure roller 11.

[0029] Furthermore, two ends of the second mounting frame 21 are provided with a second sliding groove 27 fixed to the inner wall of the working box 2, and the second mounting frame 21 is slidably connected with the second sliding groove 27; the second sliding groove 27 is vertically arranged, and a second slider matching with the second sliding groove 27 is provided at the end of the second mounting frame 21 to cooperate with the lifting movement of the auxiliary pressure roller 11, thereby further improving stability;

[0030] A photoelectric sensor 7 is provided just above the auxiliary pressure roller 11, and the photoelectric sensor 7 can be installed at the bottom of the lifting plate of the electric lifting frame 5. A distance sensor 28 is provided just above the pressure roller 9, and the distance sensor 28 can be installed at the bottom of the support plate for installing the electric push rod 8;

[0031] Specifically, by arranging an electric push rod 8, a pressure roller 9, an auxiliary pressure roller 11, a reciprocating linear motion mechanism, a photoelectric sensor 7, and a distance sensor 28, before cutting, when the plastic bag arrives at the work station, the electric push rod 8 is first used to lower the pressure roller 9 close to the previous process to the surface of the conveyor belt 4 to press one end of the plastic bag, and then the auxiliary pressure roller 11 is lowered to the surface of the conveyor belt 4, and the reciprocating linear motion mechanism is cooperated to make the auxiliary pressure roller 11 move along the surface of the plastic bag to make the surface of the plastic bag flat. When the photoelectric sensor 7 detects the auxiliary pressure roller 11 from above, the electric push rod 8 is started to lower the pressure roller 9 at the other end to the surface of the conveyor belt, and then the auxiliary pressure roller 11 is raised. When the distance detected by the distance sensor 28 reaches the set value, the electric lifting frame 5 is started to lower the cutting knife 6 to cut the plastic bag. Compared with the prior art, the auxiliary pressure roller 11 is used to avoid the excessive tension of the plastic bag when the pressure roller 9 acts on the plastic bag at the same time, thereby ensuring the quality of the plastic bag.

[0032] The auxiliary pressure roller 11 also has a dust collection mechanism;

[0033] Furthermore, the dust collection mechanism includes a dust collection hood 24 fixed to one side of the support frame 12, the dust collection port of the dust collection hood 24 faces the upper surface of the conveyor belt 4, so as to absorb the dust on the plastic bag, and a dust collection box 25 connected to the dust collection hood 24 is installed on the top of the support frame 12, and the dust collection box 25 is connected to the dust collection hood 24 through a dust collection pipe. The dust collection box 25 is connected to the suction end of the air pump 26 through a filter screen, and a connection port is provided at the connection between the dust collection box 25 and the suction end of the air pump 26, and the filter screen is installed on the connection port to prevent the dust in the dust collection box 25 from being sucked into the air pump 26;

[0034] Specifically, by providing a dust suction mechanism and using the vacuum pump 26 to provide suction, the vacuum hood 24 can suck away dust on the surface of the plastic bag to prevent the auxiliary pressing roller 9 from damaging the surface of the plastic bag during operation, thereby further ensuring the quality of the plastic bag.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A slitting machine for producing plastic packaging bags, comprising a working box (2) arranged on a base plate (1), characterized in that: A conveyor belt (4) is provided in the working box (2), an electric lifting frame (5) is provided above the conveyor belt (4), a cutting knife (6) is installed at the bottom of the electric lifting frame (5), pressure rollers (9) driven by a reduction motor (10) are provided on both sides of the cutting knife (6), the top of the pressure roller (9) is vertically connected to an electric push rod (8) installed in the working box (2), an auxiliary pressure roller (11) installed in a support frame (12) is provided between the pressure rollers (9), a reciprocating linear motion mechanism is connected to the auxiliary pressure roller (11), and the reciprocating linear motion mechanism can be servo-lifted, a photoelectric sensor (7) is provided directly above the auxiliary pressure roller (11), a distance sensor (28) is provided directly above the pressure roller (9), and a dust suction mechanism is also provided on the auxiliary pressure roller (11).

2. A slitting machine for producing plastic packaging bags according to claim 1, characterized in that: Conveying openings (3) for the conveyor belt (4) to pass in and out are provided on both sides of the working box (2).

3. A slitting machine for producing plastic packaging bags according to claim 1, characterized in that: The reciprocating linear motion mechanism comprises a mounting frame (13) with a cylinder (19) connected to the bottom, a ball screw (14) connected to a motor (17) is installed in the mounting frame (13), a sliding seat (15) is connected to the ball screw (14), and the sliding seat (15) is connected to a support frame (12).

4. A slitting machine for producing plastic packaging bags according to claim 3, characterized in that: The two ends of the mounting frame (13) are provided with a sliding groove (18) fixed to the inner wall of the working box (2), and the two ends of the mounting frame (13) are slidably connected to the sliding groove (18).

5. A slitting machine for producing plastic packaging bags according to claim 3, characterized in that: The reciprocating linear motion mechanism also includes a second mounting frame (21) with a second cylinder (20) connected to the bottom, the second mounting frame (21) being arranged on the inner wall of the working box (2) away from the ball screw (14), a limit rod (22) being fixed inside the second mounting frame (21), a sliding sleeve (23) being movablely sleeved on the limit rod (22), and the sliding sleeve (23) and the sliding seat (15) being respectively connected to the support frame (12) via a connecting arm (16).

6. A slitting machine for producing plastic packaging bags according to claim 5, characterized in that: Two ends of the second mounting frame (21) are provided with second sliding grooves (27) fixed to the inner wall of the working box (2), and the second mounting frame (21) is slidably connected to the second sliding grooves (27).

7. A slitting machine for producing plastic packaging bags according to claim 1, characterized in that: The dust collection mechanism comprises a dust collection hood (24) fixed to one side of the support frame (12); a dust collection box (25) connected to the dust collection hood (24) is installed on the top of the support frame (12); the dust collection box (25) is connected to the air extraction end of the air extraction pump (26) through a filter screen.

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