Centering slitting device

Abstract

The utility model relates to the field of bag making machine devices, in particular to a centering slitting device which comprises a rack, sliding plates are symmetrically arranged on the two sides of the rack, a plurality of sliding rods are further arranged on one side of the rack, the sliding rods penetrate through the sliding plates and are in sliding connection with the sliding plates, a sliding block is further arranged between the two sliding plates, the sliding rods are fixed to the sliding block, and the sliding plates are arranged on the sliding blocks. A motor is further fixed to one sliding plate, a lead screw is fixed to the output end of the motor, the lead screw penetrates through the sliding block and is in threaded connection with the sliding block, a tool apron is further fixed to the sliding rod, a cutter is fixed to the bottom of the tool apron, a mounting plate is further arranged on the sliding rod, and a deviation rectifying electric eye is fixed to the bottom of the mounting plate. By means of the device, the packaging bag can be cut in a centering mode, and the situation that the packaging bag cannot be cut in the centering mode due to deviation during traction is avoided.

Description

Technical Field

[0001] The invention relates to the field of bag making machine devices, in particular to a centering slitting device. Background Art

[0002] A bag making machine is a device for making packaging bags. One type of bag making machine unwinds two layers of substrates continuously, and sends the material between the two layers of substrate for heat-sealing packaging, and then it is pulled to the cutting mechanism for cutting and forming into single bags. In the actual production process, the packaging bag may slip during the pulling process, and may also deform during the heat-sealing process, causing the part of the packaging bag to be cut to shift. The length of each pulling is fixed, which causes the position of the packaging bag to be pulled to the cutting mechanism to shift. The cutting component is fixed on the frame. In this case, the packaging bag cannot be cut in the center during cutting, and the cutting accuracy is not high, resulting in differences in the edge widths of different single-bag packages, reducing the product yield.

[0003] The present invention is proposed in view of the deficiencies in the prior art. Summary of the invention

[0004] The purpose of the present invention is to overcome the above-mentioned shortcomings of the prior art and provide a centering slitting device.

[0005] The present invention can be implemented by the following technical solutions:

[0006] The present invention discloses a centering slitting device, comprising a frame, wherein slide plates are symmetrically arranged on both sides of the frame, a plurality of slide rods are also arranged on one side of the frame, the slide rods pass through the slide plates and are slidably connected with the slide plates, a slide block is also arranged between the two slide plates, the slide rods are fixed to the slide blocks, a motor is also fixed on one of the slide plates, a lead screw is fixed on the output end of the motor, the lead screw passes through the slide block and is threadedly connected to the slide block, a knife seat is also fixed on the slide rod, a cutting knife is fixed on the bottom of the knife seat, a mounting plate is also arranged on the slide rod, and a deviation correction electric eye is fixed on the bottom of the mounting plate. Adjust the position of the mounting plate on the slide bar according to the width of the packaging bag, so that the distance between the deflection correcting electric eye and the cutter blade is equal to half the width of the packaging bag. When the packaging bag passes the cutter position, the edge of one side of the packaging bag passes under the deflection correcting electric eye. When the packaging bag passes the cutter position, the packaging bag is cut by the cutter, and the cutter cuts the packaging bag from the middle. The packaging bag deviates during the traction process, and the deflection correcting electric eye detects that the packaging bag has deviated. The motor starts and the motor drives the lead screw to rotate. When the lead screw rotates, the slider moves in the direction of the lead screw, the slider drives the slide bar to move, and the cutter moves with the slide bar. The deflection correcting electric eye reaches the edge of the packaging bag again, and the cutter cuts the packaging bag in the center again.

[0007] Preferably, a fixed block is fixed on the slide bar, and a positioning screw is provided on the fixed block to be rotatably connected with the fixed block, and the positioning screw passes through the mounting plate and is threadedly connected with the mounting plate. The position of the mounting plate is adjusted according to the width of the packaging bag, and the positioning screw is rotated. When the positioning screw rotates, the mounting plate moves in the direction of the positioning screw to adjust the distance from the deviation correction electric eye to the cutting blade.

[0008] Preferably, support rods are symmetrically fixed on both sides of the frame, the support rods pass through the slides at corresponding positions and are slidably connected to the slides, limit screws are symmetrically arranged on both sides of the frame, the limit screws pass through the slides at corresponding positions and are threadedly connected to the slides, a rotating shaft is also arranged on the frame, the ends of the limit screws are fixed with first bevel teeth, the positions of the rotating shaft corresponding to the first bevel teeth are fixed with second bevel teeth, the second bevel teeth mesh with the first bevel teeth at corresponding positions, and a handle is also fixed to the end of the rotating shaft. By rotating the rotating shaft, the limit screws rotate with the rotating shaft, thereby adjusting the height of the cutter and cutting the packaging bag when the packaging bag passes through the cutter position.

[0009] Compared with the prior art, the present invention has the following advantages:

[0010] The device can realize the center cutting of the packaging bag, and avoid the situation that the packaging bag is offset during traction and cannot be cut in the center. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The specific embodiments of the present invention are further described in detail below with reference to the accompanying drawings, wherein:

[0012] Figure 1 It is a structural schematic diagram of the present invention;

[0013] In the figure: 1, frame; 2, slide plate; 3, slide bar; 4, slide block; 5, motor; 6, lead screw; 7, mounting plate; 8, deviation correction electric eye; 9, knife seat; 10, fixing block; 11, positioning screw; 12, limiting screw; 13, first bevel gear; 14, rotating shaft; 15, second bevel gear; 16, handle; 17, support rod; DETAILED DESCRIPTION

[0014] The embodiments of the present invention are described in detail below with reference to the accompanying drawings:

[0015] Embodiment 1:

[0016] like Figure 1As shown, this embodiment discloses a centering slitting device, including a frame 1, with slide plates 2 symmetrically arranged on both sides of the frame 1, and a plurality of slide rods 3 are also arranged on one side of the frame 1, the slide rods 3 pass through the slide plates 2 and are slidably connected to the slide plates 2, and the slide rods 3 are all fixed to the slide blocks 4, and a motor 5 is also fixed on one of the slide plates 2, and a screw rod 6 is fixed on the output end of the motor 5, and the screw rod 6 passes through the slide block 4 and is threadedly connected to the slide block 4, and a knife seat 9 is also fixed on the slide rod 3, and a cutting knife is fixed at the bottom of the knife seat 9, and a mounting plate 7 is also arranged on the slide rod 3, and a deviation correction electric eye 8 is fixed at the bottom of the mounting plate 7. The position of the mounting plate 7 on the slide bar 3 is adjusted according to the width of the packaging bag, so that the distance between the deflection correcting electric eye 8 and the cutter blade is equal to half the width of the packaging bag. When the packaging bag passes the cutter position, the edge of one side of the packaging bag passes under the deflection correcting electric eye 8. When the packaging bag passes the cutter position, the packaging bag is cut by the cutter, and the cutter cuts the packaging bag from the middle. The packaging bag deviates during the traction process, and the deflection correcting electric eye 8 detects that the packaging bag has deviated. The motor 5 starts, and the motor 5 drives the screw rod 6 to rotate. When the screw rod 6 rotates, the slider 4 moves in the direction of the screw rod 6, and the slider 4 drives the slide bar 3 to move. The cutter moves with the slide bar 3, and the deflection correcting electric eye 8 reaches the edge of the packaging bag again, and the cutter cuts the packaging bag in the center again.

[0017] A fixing block 10 is also fixed on the slide bar 3, and a positioning screw 11 is provided on the fixing block 10 and is rotatably connected to the fixing block 10. The positioning screw 11 passes through the mounting plate 7 and is threadedly connected to the mounting plate 7. The position of the mounting plate 7 is adjusted according to the width of the packaging bag. By rotating the positioning screw 11, when the positioning screw 11 rotates, the mounting plate 7 moves in the direction of the positioning screw 11, so as to adjust the distance from the deviation correction electric eye 8 to the cutting blade.

[0018] Embodiment 2:

[0019] The present embodiment discloses a centering slitting device. Based on the structure and principle of the embodiment 1, support rods 17 are symmetrically fixed on both sides of the frame 1 of the present embodiment. The support rods 17 pass through the slides 2 at the corresponding positions and are slidably connected with the slides 2. Limiting screws 12 are symmetrically arranged on both sides of the frame 1. The limiting screws 12 pass through the slides 2 at the corresponding positions and are threadedly connected with the slides 2. A rotating shaft 14 is also arranged on the frame 1. A first bevel tooth 13 is fixed at the end of the limiting screw 12. Second bevel teeth 15 are fixed at positions corresponding to the first bevel teeth 13 on the rotating shaft 14. The second bevel teeth 15 are meshed with the first bevel teeth 13 at the corresponding positions. A handle 16 is also fixed at the end of the rotating shaft 14.

[0020] The above are only preferred embodiments of the present invention. It should be pointed out that for ordinary technicians in this technical field, various changes, modifications, substitutions and variations can be made to these embodiments without departing from the technical principles of the present invention. These changes, modifications, substitutions and variations should also be regarded as the scope of protection of the present invention.

Claims

1. A centering slitting device, comprising a frame, characterized in that: Slide plates are symmetrically arranged on both sides of the frame, and a plurality of slide rods are also arranged on one side of the frame. The slide rods pass through the slide plates and are slidably connected to the slide plates. A slide block is also arranged between the two slide plates, and the slide rods are all fixed to the slide blocks. A motor is also fixed on one of the slide plates, and a lead screw is fixed on the output end of the motor, and the lead screw passes through the slide block and is threadedly connected to the slide block. A knife seat is also fixed on the slide rod, and a cutting knife is fixed at the bottom of the knife seat. A mounting plate is also arranged on the slide rod, and a deviation correction electric eye is fixed at the bottom of the mounting plate.

2. The centering and slitting device according to claim 1, characterized in that: A fixing block is also fixed on the slide bar, and a positioning screw rotatably connected to the fixing block is provided on the fixing block. The positioning screw passes through the mounting plate and is threadedly connected to the mounting plate.

3. The centering and slitting device according to claim 1, characterized in that: Support rods are symmetrically fixed on both sides of the frame, and the support rods pass through the slides at corresponding positions and are slidably connected to the slides. Limiting screws are symmetrically arranged on both sides of the frame, and the limiting screws pass through the slides at corresponding positions and are threadedly connected to the slides. A rotating shaft is also arranged on the frame, and a first bevel tooth is fixed at the end of the limiting screw, and a second bevel tooth is fixed at a position corresponding to the first bevel tooth on the rotating shaft, and the second bevel tooth is meshed with the first bevel tooth at the corresponding position. A handle is also fixed at the end of the rotating shaft.

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