Fixed-distance fusion cutting device for plastic packaging bag production

Abstract

The utility model discloses a fixed-distance fusion cutting device for plastic packaging bag production, which belongs to the technical field of plastic packaging bag production and processing equipment and comprises a left case and a right case, and a control box and an inverted concave support are erected above the position between the left case and the right case. Pneumatic cylinders are arranged on the two sides of the inverted-concave-shaped support, piston rods of the pneumatic cylinders penetrate through the transverse section of the inverted-concave-shaped support and are downwards connected to a sliding tool apron, the two sides of the sliding tool apron are embedded into sliding grooves in the inner side face of the vertical section of the inverted-concave-shaped support in a sliding mode, and a fusion cutting tool bit is installed below the sliding tool apron. A supporting roller is arranged between the left machine box and the right machine box below the fusion cutting tool bit in a sleeved mode through an installation shaft, and a plurality of vertically-spaced material stirring discs are arranged between the left machine box and the right machine box in front of the supporting roller through a transmission shaft. According to the fixed-distance melting and cutting device, by arranging the buffering assembly and the protection assembly, on one hand, the service life of the supporting roller can be prolonged, melting and cutting vibration is reduced, on the other hand, plastic bags can be prevented from falling off in the rotating process, and the machining quality of the plastic bags is guaranteed on the whole.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic packaging bag production and processing equipment, and more specifically to a fixed-distance melting and cutting device for the production of plastic packaging bags. Background Art

[0002] The existing plastic packaging bag processing mainly includes film blowing, slitting, color printing, film cutting, bag making and packaging. In the film cutting process, a hot melt film cutting machine is needed to cut the plastic bags to facilitate the subsequent bag making process. Specifically, the horizontally arranged melt cutting head is driven by an electric-controlled pneumatic cylinder to perform a fixed periodic lifting and lowering movement to continuously cut the plastic strips on the supporting roller below, and then combined with the material-push claws in the front, the plastic strips are continuously pushed forward to complete the entire fixed-distance melt cutting operation.

[0003] In the actual cutting process, there are mainly the following problems: first, the existing melting and cutting blade directly collides and contacts with the outer side surface of the supporting roller below. Since the area below the melting and cutting blade is small and the pressure is large, the supporting roller with a large strip volume is easily damaged after long-term use. At the same time, there is vibration when the melting and cutting blade directly collides with the supporting roller, resulting in uneven melting cuts; second, the existing material-push claws are directly exposed to the outside, resulting in the plastic bag easily flying out and falling during rotation. At the same time, the metal surface of the material-push claws is in direct contact with the plastic bag, which easily causes the surface of the plastic bag to be pulled and damaged. Utility Model Content

[0004] The utility model aims to provide a fixed-distance melting and cutting device for the production of plastic packaging bags. The fixed-distance melting and cutting device can extend the service life of the supporting roller and reduce the melting and cutting vibration by setting a buffer component and a protection component. On the other hand, it can prevent the plastic bags from falling during the rotation process, thereby ensuring the processing quality of the plastic bags as a whole.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] A fixed-distance melting and cutting device for producing plastic packaging bags comprises left and right chassis, a control box and an inverted concave bracket are arranged above the left and right chassis, pneumatic cylinders are arranged on both sides of the inverted concave bracket, and the piston rods of the pneumatic cylinders pass through the transverse section of the inverted concave bracket and are downwardly connected to the sliding knife seat, both sides of the sliding knife seat are slidably embedded in the slide grooves on the inner side surfaces of the vertical section of the inverted concave bracket, a melting and cutting knife head is installed below the sliding knife seat, a supporting roller is sleeved between the left and right chassis below the melting and cutting knife head through an installation shaft, a plurality of vertically spaced material-diverting disks are installed between the left and right chassis in front of the supporting roller through a transmission shaft, and material-diverting claws are arranged at equal intervals around the material-diverting disk, wherein a plastic packaging bag unloading plate is arranged on the left side of the front end of the material-diverting disk located on the far right, a plurality of insertion rods are arranged on the upper surface of the unloading plate, an arc-shaped baffle is arranged above the material-diverting disk, and both sides of the arc-shaped baffle are rotatably installed on the left and right chassis through a rotating wheel, a flexible protective sleeve is sleeved on the material-diverting area at the outer end of the material-diverting claw, and the rotating wheel is adjusted in angle through an outer handle.

[0007] As a further optimization of the scheme of the present application, support plates are provided inwardly on the inner sides of the left and right chassis on both sides of the support roller, and an arc-shaped buffer plate is provided above the support plate. The lower surfaces on both sides of the arc-shaped buffer plate are connected to the upper surface of the support plate through inwardly inclined telescopic spring rods, and the middle area of ​​the arc-shaped buffer plate and the position corresponding to the upper melting and cutting head are filled with insulation strips. The upper surface of the arc-shaped buffer plate is 2-3 cm higher than the upper end of the support roller, and the mounting axis is located in the middle area between the arc-shaped buffer plate and the support plate.

[0008] As a further optimization of the solution of the present application, the melting and cutting blade head and the pneumatic cylinder are both connected to a control box through lines, and the control box is externally connected to a power supply.

[0009] As a further optimization of the solution of the present application, the cross-section of the arc-shaped baffle is a sector with a central angle of 120 degrees, the interior of the arc-shaped baffle is hollow and the hollow area wraps around all the material-diverting discs.

[0010] As a further optimization of the solution of the present application, a plurality of feeding rollers are provided in the area between the rear sides of the left and right chassis.

[0011] As a further optimization of the solution of the present application, a supporting seat is provided between the adjacent material-diverting plates, and the supporting seat extends into the area below the supporting roller.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] The utility model is provided with an arc-shaped baffle and a flexible protective sleeve structure, wherein the arc-shaped baffle shields all the tops of the material-diverting discs to prevent the melted and cut plastic packaging bags from flying out of the material-diverting claws and falling off, and the flexible protective sleeves directly contact the melted and cut plastic packaging bags to prevent the metal surface of the material-diverting claws from directly contacting the plastic bags, causing the surface of the plastic bags to be pulled and damaged;

[0014] In the utility model, arc-shaped buffer plate structures 2-3 cm higher than the uppermost end of the support roller are arranged on both sides below the melting and cutting blade head, and the support plate and the telescopic spring rod structure are combined. When the melting and cutting blade head is pressed down, the support roller and the melting and cutting blade head directly collide and contact to perform buffering, and at the same time reduce the vibration caused by the energy dissipation collision, so that the subsequent melting and cutting blade head and the outer side surface of the support roller are smoothly contacted to melt and cut the plastic packaging bags in between, thereby ensuring the flatness of the incision and extending the service life of the support roller. When the heat insulation strip is damaged, it can be replaced separately, and the consumables are relatively small. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of the fixed-distance melting and cutting device of the utility model (part of the arc-shaped baffle housing is removed);

[0016] Figure 2 This is a schematic diagram of the installation structure of the arc-shaped buffer plate of the utility model;

[0017] Figure 3 This is a schematic diagram of the complete structure of the arc-shaped baffle of the utility model;

[0018] In the figure: 1. chassis; 2. control box; 3. inverted concave bracket; 4. pneumatic cylinder; 5. sliding knife seat; 6. melting cutting knife head; 7. supporting roller; 8. transmission shaft; 9. material removing claw; 10. flexible protective sleeve; 11. arc baffle; 12. unloading plate; 13. insertion rod; 14. support plate; 15. telescopic spring rod; 16. arc buffer plate; 17. thermal insulation strip; 18. rotating wheel; 19. handle. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, objectives and effects achieved by the utility model easy to understand, the utility model is further explained below with reference to specific diagrams.

[0020] In order to solve the problem that the material-dispensing claw 9 is easy to fly out and fall during the rotation of the existing plastic bag, and the metal surface of the material-dispensing claw 9 is easy to cause the surface of the plastic bag to be pulled and damaged, such as Figure 1 and Figure 3As shown, the present application includes left and right chassis 1, a control box 2 and an inverted concave bracket 3 are arranged above the left and right chassis 1, pneumatic cylinders 4 are arranged on both sides of the inverted concave bracket 3, and the piston rods of the pneumatic cylinders 4 pass through the transverse section of the inverted concave bracket 3 and are downwardly connected to the sliding knife seat 5, both sides of the sliding knife seat 5 are slidably embedded in the sliding groove on the inner side of the vertical section of the inverted concave bracket 3, a melting and cutting knife head 6 is installed below the sliding knife seat 5, and a support roller 7 is installed between the left and right chassis 1 below the melting and cutting knife head 6 through the installation shaft sleeve, and the left side in front of the support roller 7 A plurality of vertically spaced material-dispensing discs are installed between the right and left chassis 1 through a transmission shaft 8, and material-dispensing claws 9 are arranged outwardly at equal intervals around the material-dispensing disc, wherein a plastic packaging bag unloading plate 12 is arranged on the left side of the front end of the material-dispensing disc on the far right, and a plurality of plugging rods 13 are arranged on the upper surface of the unloading plate 12, and an arc-shaped baffle plate 11 is arranged above the material-dispensing disc, and the arc-shaped baffle plate 11 is rotatably installed on the left and right chassis 1 through a rotating wheel 18 on both sides, and a flexible protective sleeve 10 is provided on the material-dispensing area at the outer end of the material-dispensing claw 9, and the rotating wheel 18 is adjusted in angle through a handle 19 on the outside;

[0021] Specifically, the drive shaft 8 is driven to rotate by the driving motor inside the chassis, thereby driving all the material-discharging claws 9 to rotate. After the plastic packaging bag is melt-cut by the melting and cutting head 6, it is picked up by the material-discharging claws 9 and transported in a circular rotation backward. Finally, one side of the plastic packaging bag is inserted by the insertion rod 13 to fix the plastic packaging bag to the unloading plate 12. During the process, the arc-shaped baffle plate 11 blocks the outer periphery above the material-discharging disk, thereby preventing the plastic packaging bag from flying out and falling after being picked up by the material-discharging claws 9. At the same time, the flexible protective sleeve 10 replaces the metal surface of the material-discharging claws 9 to directly contact the plastic packaging bag, thereby reducing the pulling damage to the plastic packaging bag. When taking out the plastic packaging bag, the handle 19 can be used to rotate the wheel 18 inward to drive the arc-shaped baffle plate 11 to rotate inward, and several plastic packaging bags on the insertion rod 13 can be taken out.

[0022] In order to solve the problem that the existing support roller 7 is easily damaged after long-term use, and the melting cutter head 6 directly collides with the support roller 7 and vibrates, resulting in the problem that the melting cut is not smooth. Figure 2 As shown, the inner side surfaces of the left and right chassis 1 on both sides of the support roller 7 of the present application are both provided with support plates 14 inwardly, and an arc-shaped buffer plate 16 is provided above the support plate 14. The lower surfaces of both sides of the arc-shaped buffer plate 16 are connected to the upper surface of the support plate 14 through inwardly inclined telescopic spring rods 15. The middle area of ​​the arc-shaped buffer plate 16 and the position corresponding to the upper melting and cutting blade 6 are filled with heat insulation strips 17. The upper surface of the arc-shaped buffer plate 16 is 2-3 cm higher than the upper end of the support roller 7, and the mounting shaft is located in the middle area between the arc-shaped buffer plate 16 and the support plate 14;

[0023] Specifically, when the melting and cutting blade 6 is pressed down, the heat insulation strip 17 of the arc-shaped buffer plate 16 directly collides and contacts with the melting and cutting blade 6 before the supporting roller 7, thereby providing a buffer and reducing the vibration caused by the energy dissipation collision, so that the subsequent melting and cutting blade 6 can smoothly contact with the outer side surface of the supporting roller 7 to melt and cut the plastic packaging bag in between, thereby ensuring the smoothness of the cut and extending the service life of the supporting roller 7. When the heat insulation strip 17 is damaged, it can be replaced separately with relatively few consumables.

[0024] The standard parts used in the utility model can all be purchased from the market, and special-shaped parts can be customized according to the instructions and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt the conventional models in the existing technology, and the circuit connection adopts the conventional connection method in the existing technology, which will not be described in detail here.

[0025] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A fixed-distance melting and cutting device for producing plastic packaging bags, comprising left and right chassis, a control box and an inverted concave bracket are mounted above the left and right chassis, pneumatic cylinders are arranged on both sides of the inverted concave bracket, and the piston rods of the pneumatic cylinders pass through the transverse section of the inverted concave bracket and are downwardly connected to the sliding knife seat, both sides of the sliding knife seat are slidably embedded in the slide groove on the inner side of the vertical section of the inverted concave bracket, a melting and cutting knife head is installed under the sliding knife seat, a supporting roller is installed between the left and right chassis below the melting and cutting knife head through an installation shaft sleeve, and a plurality of vertically spaced material-dividing disks are installed between the left and right chassis in front of the supporting roller through a transmission shaft, and material-dividing claws are arranged outwardly at equal intervals around the material-dividing disk, wherein a plastic packaging bag blanking plate is arranged on the left side of the front end of the material-dividing disk located on the far right, and a plurality of insertion rods are arranged on the upper surface of the blanking plate, characterized in that: An arc-shaped baffle is arranged above the material-dispensing disc, and the two sides of the arc-shaped baffle are rotatably mounted on the left and right chassis through a rotating wheel. A flexible protective sleeve is provided at the material-dispensing area at the outer end of the material-dispensing claw, and the rotating wheel is adjusted in angle through an outer handle.

2. A fixed-distance melting and cutting device for producing plastic packaging bags according to claim 1, characterized in that: Support plates are provided inwardly on the inner sides of the left and right chassis on both sides of the support roller, and an arc-shaped buffer plate is provided above the support plate. The lower surfaces on both sides of the arc-shaped buffer plate are connected to the upper surface of the support plate through inwardly inclined telescopic spring rods, and the middle area of ​​the arc-shaped buffer plate and the position corresponding to the upper melting and cutting head are filled with insulation strips. The upper surface of the arc-shaped buffer plate is 2-3 cm higher than the upper end of the support roller, and the installation axis is located in the middle area between the arc-shaped buffer plate and the support plate.

3. A fixed-distance melting and cutting device for producing plastic packaging bags according to claim 2, characterized in that: The melting and cutting blade and the pneumatic cylinder are both connected to a control box through lines, and the control box is externally connected to a power supply.

4. A fixed-distance melting and cutting device for producing plastic packaging bags according to claim 3, characterized in that: The cross section of the arc-shaped baffle is a sector with a central angle of 120 degrees. The interior of the arc-shaped baffle is hollow and the hollow area wraps around all the material-diverting discs.

5. A fixed-distance melting and cutting device for producing plastic packaging bags according to claim 4, characterized in that: A plurality of feeding rollers are arranged in the area between the rear sides of the left and right chassis.

6. A fixed-distance melting and cutting device for producing plastic packaging bags according to claim 5, characterized in that: A supporting seat is arranged between the adjacent material-diverting plates, and the supporting seat extends into the area below the supporting roller.

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