Trimming device of cold cutting bag making machine

Abstract

The utility model relates to a trimming device of a cold cutting bag making machine, the trimming device of the cold cutting bag making machine is located between a heat sealing device and a cold cutting device, the trimming device of the cold cutting bag making machine comprises a machine frame, a sliding seat, a fastening bolt, a blade, an exhaust frame and an inflator pump, the blade is fixedly connected with the sliding seat, the sliding seat is connected with the machine frame in a sliding mode, and the fastening bolt is connected with the exhaust frame. The position of the blade can be controlled by adjusting the position of the sliding seat, so that the device can better adapt to bag bodies of different sizes, displacement of the sliding seat can be fixed through the fastening bolt, the rack is provided with a discharging opening used for collecting waste generated by cutting, the cleaning requirement is reduced, the exhaust frame is rotationally connected with a pressing wheel, and the pressing wheel is arranged on the rack. The pressing wheel is used for pressing a bag body downwards and is matched with a tensioning device to enable the bag body to be more beneficial to cutting, the exhaust frame is communicated with the air extracting pump, the exhaust frame is further provided with an air spraying hole used for spraying waste still attached to the bag body after cutting into a discharging opening, and the purpose of improving the production efficiency is achieved through a new mechanical structure.

Description

Technical Field

[0001] The utility model relates to the field of cold-cut bag-making machines, in particular to a trimming device of the cold-cut bag-making machines. Background Art

[0002] Cold-cut bag making machine is a machine for making various plastic packaging bags or other material packaging bags. Its processed products are plastic or other material packaging bags of various sizes, thicknesses and specifications. Generally speaking, plastic packaging bags are the main products. Cold-cut bag making machine includes heat sealing device, cold cutting device and tensioning device. The heat sealing device mainly heats the film and then seals the bottom of the film, and then makes the film into packaging bags. The cold cutting device is mainly used to separate the continuous packaging bags formed after the bottom is sealed. The tensioning device is mainly used to adjust the tension of the transmission material, so as to facilitate the use of the packaging bag.

[0003] Patent No. CN213383264U in the prior art discloses a trimming device for a cold-cut bag-making machine, comprising a support seat arranged on a frame and located between a heat-sealing device and a cold-cutting device, the support seat being provided with a support roller and a support rod, the support roller being arranged parallel to the support rod, a slide seat being slidably connected to the support rod, a support frame being fixed on the side wall of the slide seat, a power rod and two clamping rods being slidably connected to the support frame, the power rod moving along its own length direction and clamping the support rod with two clamping rods through a transmission mechanism, and a cutter for cutting white edges being provided on the slide seat.

[0004] The trimming device of the existing cold-cut bag-making machine does not collect the waste generated after trimming, which needs to be manually cleaned up later. The existing device may still leave waste on the bag body after cutting, which also needs to be cleaned up later, thus affecting production efficiency. In addition, the tensioning force of the tensioning device is weakened due to long-term operation or the tensioning force of the tensioning device is set too weakly, which may affect the flatness of the blade cutting. Summary of the invention

[0005] In order to solve the above problems, the utility model provides a trimming device for a cold-cut bag-making machine:

[0006] A trimming device for a cold-cut bag-making machine, comprising a frame, a slide seat, a fastening bolt, a blade, an exhaust frame and an air pump, wherein a bag inlet and a bag outlet are respectively arranged on two sides of the frame, and two corresponding square slides are respectively arranged on both sides of the bag inlet of the frame, and threaded holes for installing the fastening bolts are arranged on the upper ends of the two square slides, and the fastening bolts can rotate and move downward relative to the frame, and the lower ends of the fastening bolts and the upper ends of the slide seat form a locking and fixed cooperation, the slide seat has two and is respectively slidably sleeved in the two square slides, and square fixing plates are respectively arranged at the opposite ends of the two slide seats, and a blade for cutting and trimming is fixedly connected to the inner side of the square fixing plate, and the blade corresponds to the discharge port opened on the frame, and the discharge port is located below the blade, and waste generated during cutting will fall into the discharge port;

[0007] The exhaust rack is composed of multiple sections of hollow pipes that are fixedly connected, and the exhaust rack is in a "convex" shape. The two sides of the exhaust rack are hinged to the through holes provided on both sides of the bag outlet of the rack. A pressing wheel is rotatably connected in the middle of the exhaust rack. During cutting, the pressing wheel presses on the upper surface of the bag body. Two first hollow tubes perpendicular to the pressing wheel axis are respectively provided on both sides of the exhaust rack near the pressing wheel. Three air jet holes inclined downward at 45° with the pressing wheel axis as a reference are opened on the two first hollow tubes, and the air jet holes on both sides are inclined outward. The root of the exhaust rack connected to the rack is connected to an air pump, and the air pump is fixedly connected to the side of the rack.

[0008] Preferably, the discharge port is in an inverted trapezoidal shape, and a cutting bevel is provided on the side of the discharge port close to the blade to form abutment with the end of the blade, and an inclined groove is provided on the upper end of the cutting bevel, and the inclined groove is located directly below the cutting point between the blade and the bag body. Since cutting occurs above the inclined groove, the waste generated after cutting will slide into the discharge port along the inclined groove through the inclined groove.

[0009] Preferably, a clamping column is fixedly connected to one side of the blade near the cutting end, the clamping column is connected to an elastic member, the other end of the elastic member is fixedly connected to a latch, the latch is installed in a fixing hole provided in the square fixing plate, and the fixed connection between the blade and the square fixing plate, the clamping column position, and the latch position are distributed in a triangular array. When the device is in operation, the bag body will continue to exert a flipping force on the two blades, which are prone to loosening after long-term operation. The elastic member can offset the flipping force exerted by the bag body on the blades to ensure the tightness of the blades.

[0010] Preferably, the upper end of the slide seat is provided with a groove, the surface of the groove is provided with anti-skid patterns, the lower end of the fastening bolt is detachably connected with a circular anti-sliding block, the lower surface of the circular anti-sliding block is provided with anti-skid patterns. The anti-skid patterns can increase the static friction between the fastening bolt and the slide seat, thereby making it more secure.

[0011] Preferably, a handle is provided on the upper end of the fastening bolt, and the handle is used to drive the fastening bolt to rotate. Through the handle, it is more convenient to tighten directly by hand.

[0012] Beneficial effects: The blade can be driven by the movement of the slide seat so that the blade is located on both sides of the bag body, and then the fastening bolts are rotated to fix it, which can adapt to bags of different sizes. The waste generated after cutting will naturally fall into the discharge port for collection, and there is no need to manually take care of the device, which is more convenient. The waste remaining in the cutting and processing area on the bag body can be blown into the discharge port opened below through the air jet hole opened on the exhaust frame, and no cleaning is required, which improves efficiency. The pressure wheel installed on the exhaust frame can increase the tension of the bag body, making the bag body flatter and reducing the shaking of the bag body caused by the air jet. The blade will become rough after long-term use and is not conducive to cutting. The blade can be installed through the fixed plate to facilitate the replacement of the blade. Compared with other cold-cut bag-making machine trimming devices, this device has a simpler structure and is easy to install and maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of an embodiment.

[0014] Figure 2 for Figure 1 An enlarged schematic diagram of point A.

[0015] Figure 3 A side view of an embodiment.

[0016] Figure 4 It is a schematic diagram of the structure of the fastening bolt.

[0017] Figure 5 It is a schematic diagram of the structure of the exhaust rack.

[0018] Figure numerals: 1, frame; 2, slide seat; 3, fastening bolt; 4, blade; 5, exhaust frame; 6, air pump; 7, square slide; 8, through hole; 9, pressure wheel; 10, discharge port; 11, air jet hole; 12, inclined groove; 13, clamping column; 14, elastic member; 15, latch; 16, circular anti-sliding block; 17, handle; 18, groove; 19, bag body; 20, first hollow tube; 21, fixing plate; 22, cross clamping part. DETAILED DESCRIPTION

[0019] The following is combined with Figure 1-5 The utility model is further described with examples.

[0020] Embodiment 1: A trimming device for a cold-cut bag-making machine, wherein the trimming device for the cold-cut bag-making machine is located between a heat-sealing device and a cold-cutting device. Figure 1As shown, the trimming device of the cold-cut bag making machine includes a frame 1, a slide 2, a fastening bolt 3, a blade 4, an exhaust frame 5 and an air pump 6. The frame 1 is provided with a bag inlet and a bag outlet on both sides. Two corresponding square slides 7 are respectively provided on both sides of the bag inlet of the frame 1. The upper ends of the two square slides 7 are provided with threaded holes for installing the fastening bolts 3. The fastening bolts 3 can rotate and move downward relative to the frame 1. The lower end of the fastening bolt 3 and the upper end of the slide 2 form a locking and fixed fit. The slide 2 has two and is slidably sleeved in the two square slides 7 respectively. The upper end of the slide 2 is provided with a groove 18, and the surface of the groove 18 is provided with anti-slip patterns, such as Figure 4 As shown, the fastening bolt 3 is detachably connected to the circular anti-sliding block 16. The lower end of the fastening bolt 3 is provided with a cross-locking portion 22, which corresponds to the groove 18 provided on the circular anti-sliding block 16 to form an interference fit. The circular anti-sliding block 16 can be installed inside the square slide 7 through the cross-locking portion 22. The lower surface of the circular anti-sliding block 16 is provided with anti-slip grooves. The anti-slip grooves can increase the static friction between the fastening bolt 3 and the slide seat 2, so as to tighten them more. The upper end of the fastening bolt 3 is provided with a handle 17, and the handle 17 is used to drive the fastening bolt 3 to rotate. Through the handle 17, it is more convenient to tighten directly by hand.

[0021] like Figure 2 As shown, the two opposite ends of the two slides 2 are provided with square fixing plates 21, and the inner side of the square fixing plates 21 is fixedly connected with a blade 4 for cutting and trimming, and the blade 4 is fixedly connected with a clamping column 13 on the side close to the cutting end, and the clamping column 13 is connected with an elastic member 14, and the other end of the elastic member 14 is fixedly connected with a latch 15, and the latch 15 is installed in a fixing hole provided in the square fixing plates 21. The fixed connection between the blade 4 and the square fixing plates 21, the position of the clamping column 13, and the position of the latch 15 are distributed in a triangular array. When the device is in operation, the bag body 19 will continue to apply a flipping force to the two blades 4, which are prone to loosening after long-term operation. The elastic member 14 can offset the flipping force applied by the bag body 19 to the blade 4, thereby ensuring the fastening of the blade 4.

[0022] like Figure 3 As shown, the blade 4 corresponds to the discharge port 10 opened on the frame 1, and the discharge port 10 is located below the blade 4. Waste generated during cutting will fall into the discharge port 10. The discharge port 10 is in an inverted trapezoidal shape. The discharge port 10 is provided with a cutting bevel on the side close to the blade 4 to form abutment with the end of the blade 4. The upper end of the cutting bevel is provided with an inclined groove 12, and the inclined groove 12 is located directly below the cutting point between the blade 4 and the bag body 19. Because the cutting occurs above the inclined groove 12, the waste generated after cutting will slide into the discharge port 10 along the inclined groove 12 through the inclined groove 12;

[0023] like Figure 1 and Figure 5 As shown, the exhaust rack 5 is composed of multiple sections of hollow pipes fixedly connected, and the exhaust rack 5 is in a "convex" shape. The two sides of the exhaust rack 5 are hinged to the through holes 8 provided on both sides of the bag outlet of the frame 1. The middle of the exhaust rack 5 is rotatably connected with a pressing wheel 9. When cutting, the pressing wheel 9 presses on the upper surface of the bag body 19, as shown in FIG. Figure 3 As shown, the exhaust frame 5 is provided with two first hollow tubes 20 perpendicular to the axis of the pressing wheel 9 on both sides close to the pressing wheel 9, and the two first hollow tubes 20 are provided with three air injection holes 11 inclined downward at 45° with respect to the axis of the pressing wheel 9 as a reference, and the air injection holes 11 on both sides are inclined outward, as shown in FIG. Figure 1 As shown, the exhaust frame 5 is connected to the root of the frame 1 and is connected to the air pump 6 , and the air pump 6 is fixedly connected to the side of the frame 1 .

[0024] This device can drive the blade 4 through the movement of the slide 2, so that the blade 4 is located on both sides of the bag body 19, and then rotate the fastening bolt 3 to fix it, so as to complete the trimming of bags 19 of different sizes. The bag body 19 enters the bag outlet from the bag inlet, and the two blades 4 continue to cut and trim. The waste generated after cutting will naturally fall into the discharge port 10 for collection, and there is no need to manually take care of the device, which is more convenient. The waste remaining in the cutting and processing area of ​​the bag body 19 can be blown into the discharge port 10 opened below through the air jet hole 11 opened on the exhaust frame 5, and no cleaning is required to improve efficiency. The pressure wheel 9 installed on the exhaust frame 5 can increase the tension of the bag body 19, make the bag body 19 more flat, and reduce the shaking of the bag body 19 caused by the air jet. The blade 4 will become rough after long-term use, which is not conducive to cutting. The blade 4 can be installed through the fixed plate 21 to facilitate the replacement of the blade 4. Compared with other cold-cut bag-making machine trimming devices, this device has a simpler structure and is easy to install and maintain.

Claims

1. A trimming device for a cold-cut bag-making machine, characterized in that: The invention comprises a frame (1), a slide seat (2), a fastening bolt (3), a blade (4), an exhaust frame (5) and an air pump (6); a bag inlet and a bag outlet are respectively arranged on both sides of the frame (1); two corresponding square slideways (7) are opened on both sides of the bag inlet of the frame (1); threaded holes for installing the fastening bolts (3) are opened at the upper ends of the two square slideways (7); the fastening bolts (3) can rotate downward relative to the frame (1); the lower ends of the fastening bolts (3) and the upper ends of the slide seat (2) are connected to each other. The two slide seats (2) are locked and fixedly matched, and the two slide seats (2) are provided with two sliding sleeves in the two square slideways (7) respectively. The opposite ends of the two slide seats (2) are provided with square fixing plates (21). The inner sides of the two square fixing plates (21) are fixedly connected with blades (4) for cutting and trimming. The two blades (4) correspond to the discharge openings (10) opened on the frame (1). The discharge openings (10) are located below the blades (4). Waste generated during cutting will fall into the discharge openings (10); The exhaust rack (5) is composed of a plurality of hollow pipes fixedly connected. The exhaust rack (5) is in a "convex" shape. The two sides of the exhaust rack (5) are hinged to the through holes (8) provided on the two sides of the bag outlet of the frame (1). The middle of the exhaust rack (5) is rotatably connected to a pressing wheel (9). During cutting, the pressing wheel (9) presses on the upper surface of the bag body (19). The exhaust rack (5) is provided with two first hollow pipes (20) perpendicular to the axis of the pressing wheel (9) on both sides close to the pressing wheel (9). The two first hollow pipes (20) are provided with air injection holes (11) inclined downward at 45 degrees with the axis of the pressing wheel (9) as a reference. The air injection holes (11) on both sides are inclined outward. The exhaust rack (5) is connected to the root of the frame (1) and is connected to an air pump (6). The air pump (6) is fixedly connected to the side of the frame (1).

2. The trimming device of a cold-cut bag-making machine according to claim 1, characterized in that: The discharge port (10) is in the shape of an inverted trapezoid. A cutting bevel is provided on the side of the discharge port (10) close to the blade (4) to form abutment with the end of the blade (4). An oblique groove (12) is provided at the upper end of the cutting bevel. The oblique groove (12) is located directly below the cutting point between the blade (4) and the bag body (19).

3. The trimming device of a cold-cut bag-making machine according to claim 1, characterized in that: A clamping column (13) is fixedly connected to one side of the blade (4) close to the cutting end, the clamping column (13) is connected to an elastic member (14), the other end of the elastic member (14) is fixedly connected to a latch (15), the latch (15) is installed in a fixing hole provided in the square fixing plate (21), and the fixed connection between the blade (4) and the square fixing plate (21), the position of the clamping column (13), and the position of the latch (15) are distributed in a triangular array.

4. The trimming device of a cold-cut bag-making machine according to claim 1, characterized in that: The upper end of the sliding seat (2) is provided with a groove (18), and the surface of the groove (18) is provided with anti-skid patterns. The lower end of the fastening bolt (3) is detachably connected with a circular anti-sliding block (16), and the lower surface of the circular anti-sliding block (16) is provided with anti-skid patterns.

5. The trimming device of a cold-cut bag-making machine according to claim 1, characterized in that: A handle (17) is provided at the upper end of the fastening bolt (3), and the handle (17) is used to drive the fastening bolt (3) to rotate.

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