Cutting device for cast film production

Abstract

The utility model discloses a cutting device for cast film production, which comprises a cutting machine shell, a porous placing table is slidably connected in the cutting machine shell, a lifting mechanism is mounted at the bottom end of the inner wall of the cutting machine shell, a screw rod is rotatably connected to the top end of the inner wall of the cutting machine shell, and a movable block slidably connected with the cutting machine shell is in threaded connection with the middle of the screw rod. According to the cutting device for cast film production, due to the fact that the lifting mechanism and the lifting air cylinder are arranged, when a cast film is cut, the sliding block slides along the threaded rod, the sliding block can slide along the threaded rod, the sliding block can slide along the threaded rod, and the movable block can slide along the threaded rod. And the sliding block pulls the direction plate to generate angle deflection along the positioning seat, the positioning seat pushes the porous placement table from the bottom to adjust the to-be-cut height of the casting film, a single lifting air cylinder is replaced to push and adjust the position of the cutting knife, the cutting time is shortened, and the large-batch rapid cutting requirement of people is met.

Description

Technical Field

[0001] The utility model relates to the technical field of cutting devices, in particular to a cutting device for cast film production. Background Art

[0002] Cast film is a plastic film widely used in food, medical, industrial, agricultural and other fields. It can be produced from various plastic raw materials, such as polyethylene, polypropylene, polyester, and has good physical properties and chemical stability. It is widely used in various packaging materials. In the preparation of cast film, polyethylene, polypropylene or polyester materials need to be added to the extruder. The material is extruded under high temperature and high pressure, and the material is made into a film with uniform thickness through the compaction of the metal template. The extrusion pressure control needs to be carried out by controlling the pressure of the extruder, and then placed on the cutting device to cut the extruded cast film.

[0003] However, the traditional cutting device has the following disadvantages:

[0004] When a traditional cutting device cuts a cast film, the cutting knife often approaches the cast film to complete the cutting of the cast film. It takes a certain amount of time for the cutting knife to fall. If a large number of cast films are cut, it cannot meet people's cutting needs. Utility Model Content

[0005] The purpose of the utility model is to provide a cutting device for cast film production, so as to solve the problem that in the process of cutting cast film by the traditional cutting device proposed in the above background technology, the cutting knife often approaches the cast film to complete the cutting of the cast film, and it takes a certain time for the cutting knife to fall. If a large number of cast films are cut, it cannot meet people's cutting needs.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a cutting device for cast film production, comprising a cutting housing, the interior of the cutting housing is slidably connected to a porous placing table, a lifting mechanism is installed at the bottom end of the inner wall of the cutting housing, a screw is rotatably connected to the top end of the inner wall of the cutting housing, a movable block slidably connected to the cutting housing is threadedly connected to the middle part of the screw, a knife seat is provided at the bottom end of the movable block, a cutting knife is fixedly installed at the bottom end of the knife seat, a movable opening is opened on the surface of the cutting housing, a retracting mechanism is fixedly installed on one side of the cutting housing, a vacuum pump is fixedly installed on the other side of the cutting housing, the lifting mechanism comprises a screw and two direction plates, the surface of the screw is threadedly connected to two sliding blocks slidably connected to the cutting housing, the top ends of the two sliding blocks are respectively connected to the bottom ends of the two direction plates, the retracting mechanism comprises a mounting platform and a vertical plate, the top end of the mounting platform is fixedly connected to the bottom end of the vertical plate, the top end of the vertical plate is rotatably connected to a direction shaft, and a winding roller is fixedly installed in the middle part of the direction shaft.

[0007] Preferably, a positioning seat is fixedly installed in the middle of the bottom end of the porous placement table, and the top ends of the two direction plates are rotatably connected to the two sides of the positioning seat respectively. A servo motor for driving the screw to rotate is fixedly installed on the surface of the cutting machine housing. The servo motor starts after being energized, and the servo motor drives the screw to rotate. The screw has two threads in opposite directions with its own center line as the dividing line. The sliding block is limited by the cutting machine housing, so that the two sliding blocks slide relatively along the screw. During the sliding of the two sliding blocks, the direction plate is driven to deflect at an angle relative to the positioning seat. During the deflection of the direction plate, the vertical height of the direction plate changes, and the lifting height of the porous placement table is adjusted.

[0008] Preferably, a driven pulley is fixedly installed on the surface of the direction shaft, a motor is fixedly installed in the middle of one side of the vertical plate, a driving pulley is fixedly installed on the output end of the motor, a belt body is transmission-connected between the driving pulley and the driven pulley, the motor is started after being energized, the motor drives the driving pulley to rotate, after the driving pulley rotates, it drives the driven pulley to rotate through the belt body, after the driven pulley rotates, it drives the direction shaft to rotate, after the direction shaft rotates, it drives the winding roller to move synchronously, the winding roller winds up the cast film, and places the cast film on the porous placement table through the movable opening.

[0009] Preferably, one end of the mounting platform is fixedly connected to the cutting machine housing, and the retractable mechanism is mounted on the cutting machine housing through the mounting platform.

[0010] Preferably, a stepper motor for driving the screw to rotate is fixedly mounted on the cutting machine housing. The stepper motor starts after being powered on, and the stepper motor drives the screw to rotate. The thread on the surface of the screw matches the thread on the inner wall of the movable block. The movable block is limited by the cutting machine housing, so the movable block slides along the screw to adjust the cutting position of the cutting knife.

[0011] Preferably, the air outlet of the vacuum pump is fixedly connected to an exhaust pipe, the bottom end of the porous placement table is fixedly connected to a plurality of connecting covers, and the air inlet of the vacuum pump is fixedly connected to a plurality of extraction hoses extending to the inside of the connecting covers. The vacuum pump is started after being powered on, and the vacuum pump extracts the gas in the connecting cover through the extraction hose, so that the holes on the porous placement table generate attraction, thereby adsorbing and fixing the cast film, and the extracted gas is directly discharged to the outside through the exhaust pipe.

[0012] Preferably, a lifting cylinder is fixedly installed at the bottom end of the movable block, and the movable end of the lifting cylinder is fixedly connected to the top end of the knife seat. The lifting cylinder performs telescopic movement, and the lifting cylinder pushes the knife seat from the top to adjust the height of the cutting knife.

[0013] Compared with the prior art, the beneficial effect of the utility model is: by setting a lifting mechanism and a lifting cylinder, when the cast film is cut, the sliding block slides along the screw, and the sliding block pulls the direction plate to deflect along the positioning seat. The positioning seat pushes the porous placement table from the bottom to adjust the height of the cast film to be cut, replacing a single lifting cylinder to push and adjust the cutting knife position, shortening the cutting time, and meeting people's needs for large-scale rapid cutting. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a partial schematic diagram of the utility model;

[0015] Figure 2 It is a side view of the utility model;

[0016] Figure 3 This is a connection diagram of the lifting mechanism and the multi-hole placement table of the utility model;

[0017] Figure 4 It is a side view of the retractable mechanism of the utility model.

[0018] In the figure: 1. cutting machine casing; 2. movable opening; 3. multi-hole placing table; 4. lifting mechanism; 41. servo motor; 42. screw; 43. sliding block; 44. direction plate; 45. positioning seat; 5. screw; 6. stepping motor; 7. vacuum pump; 8. exhaust pipe; 9. movable block; 10. lifting cylinder; 11. knife seat; 12. cutting knife; 13. retracting mechanism; 131. mounting table; 132. vertical plate; 133. motor; 134. belt body; 135. driving pulley; 136. driven pulley; 137. direction shaft; 138. winding roller; 14. connecting cover; 15. extraction hose. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0020] See also Figure 1-4The utility model provides a cutting device for cast film production, comprising a cutting machine housing 1, a porous placing table 3 is slidably connected inside the cutting machine housing 1, a lifting mechanism 4 is installed at the bottom end of the inner wall of the cutting machine housing 1, a screw rod 5 is rotatably connected to the top end of the inner wall of the cutting machine housing 1, a movable block 9 slidably connected to the cutting machine housing 1 is threadedly connected to the middle part of the screw rod 5, a knife seat 11 is provided at the bottom end of the movable block 9, a cutting knife 12 is fixedly installed at the bottom end of the knife seat 11, a movable opening 2 is opened on the surface of the cutting machine housing 1, and a retracting mechanism 13 is fixedly installed on one side of the cutting machine housing 1 A vacuum pump 7 is fixedly installed on the other side of the cutting machine housing 1. The lifting mechanism 4 includes a screw 42 and two direction plates 44. The surface of the screw 42 is threadedly connected to two sliding blocks 43 that are slidably connected to the cutting machine housing 1. The top ends of the two sliding blocks 43 are respectively connected to the bottom ends of the two direction plates 44. The retracting mechanism 13 includes a mounting platform 131 and a vertical plate 132. The top end of the mounting platform 131 is fixedly connected to the bottom end of the vertical plate 132. The top end of the vertical plate 132 is rotatably connected to a direction shaft 137. A winding roller 138 is fixedly installed in the middle of the direction shaft 137.

[0021] A positioning seat 45 is fixedly installed in the middle of the bottom end of the porous placement table 3, and the top ends of the two direction plates 44 are rotatably connected to the two sides of the positioning seat 45 respectively. A servo motor 41 for driving the screw 42 to rotate is fixedly installed on the surface of the cutting machine housing 1. The servo motor 41 starts after being energized, and the servo motor 41 drives the screw 42 to rotate. The screw 42 has two threads in opposite directions with its own center line as the dividing line. The sliding block 43 is limited by the cutting machine housing 1, so that the two sliding blocks 43 slide relatively along the screw 42. During the sliding of the two sliding blocks 43, the direction plate 44 is driven to deflect at an angle relative to the positioning seat 45. During the deflection of the direction plate 44, the vertical height of the direction plate 44 changes, and the lifting height of the porous placement table 3 is adjusted.

[0022] A driven pulley 136 is fixedly installed on the surface of the direction shaft 137, a motor 133 is fixedly installed in the middle of one side of the vertical plate 132, a driving pulley 135 is fixedly installed on the output end of the motor 133, a belt body 134 is transmission-connected between the driving pulley 135 and the driven pulley 136, the motor 133 is started after being energized, the motor 133 drives the driving pulley 135 to rotate, after the driving pulley 135 rotates, it drives the driven pulley 136 to rotate through the belt body 134, after the driven pulley 136 rotates, it drives the direction shaft 137 to rotate, after the direction shaft 137 rotates, it drives the winding roller 138 to move synchronously, the winding roller 138 winds up the cast film, and places the cast film on the porous placement table 3 through the movable port 2.

[0023] One end of the mounting platform 131 is fixedly connected to the cutting machine housing 1 , and the retractable mechanism 13 is mounted on the cutting machine housing 1 through the mounting platform 131 .

[0024] A stepper motor 6 for driving the screw rod 5 to rotate is fixedly installed on the cutting machine housing 1. The stepper motor 6 starts after being energized, and the stepper motor 6 drives the screw rod 5 to rotate. The threads on the surface of the screw rod 5 match the threads on the inner wall of the movable block 9. The movable block 9 is limited by the cutting machine housing 1, so the movable block 9 slides along the screw rod 5 to adjust the cutting position of the cutting knife 12.

[0025] The air outlet of the vacuum pump 7 is fixedly connected to an exhaust pipe 8, the bottom end of the porous placement table 3 is fixedly connected to a plurality of connecting covers 14, and the air inlet of the vacuum pump 7 is fixedly connected to a plurality of extraction hoses 15 extending to the inside of the connecting cover 14. The vacuum pump 7 is started after being powered on, and the vacuum pump 7 extracts the gas in the connecting cover 14 through the extraction hoses 15, so that the holes on the porous placement table 3 generate attraction, thereby adsorbing and fixing the cast film, and the extracted gas is directly discharged to the outside through the exhaust pipe 8.

[0026] A lifting cylinder 10 is fixedly installed at the bottom end of the movable block 9, and the movable end of the lifting cylinder 10 is fixedly connected to the top of the knife seat 11. The lifting cylinder 10 performs telescopic movement, and the lifting cylinder 10 pushes the knife seat 11 from the top to adjust the height of the cutting knife 12.

[0027] When the embodiment of the present application is in use: the motor 133 is powered on and started, the motor 133 drives the active pulley 135 to rotate, the active pulley 135 rotates and drives the driven pulley 136 to rotate through the belt body 134, the driven pulley 136 rotates and drives the direction shaft 137 to rotate, the direction shaft 137 rotates and drives the winding roller 138 to move synchronously, the winding roller 138 winds up the cast film, and places the cast film on the porous placement table 3 through the movable port 2, the vacuum pump 7 is powered on and started, the vacuum pump 7 extracts the gas in the connecting cover 14 through the extraction hose 15, so that the holes on the porous placement table 3 generate attraction, the cast film is adsorbed and fixed, and the extracted gas is directly discharged to the outside through the exhaust pipe 8, the servo motor 41 is powered on and started, the servo motor 41 drives the screw 42 to rotate, the screw 42 is Two threads in opposite directions are opened with its own center line as the dividing line. The sliding block 43 is limited by the cutting machine housing 1, so that the two sliding blocks 43 slide relatively along the screw rod 42. During the sliding of the two sliding blocks 43, the direction plate 44 is driven to deflect at an angle relative to the positioning seat 45. During the deflection of the direction plate 44, the vertical height of the direction plate 44 changes, and the lifting height of the porous placement table 3 is adjusted. The stepper motor 6 is powered on and started, and the stepper motor 6 drives the screw rod 5 to rotate. The threads on the surface of the screw rod 5 match the threads on the inner wall of the movable block 9. The movable block 9 is limited by the cutting machine housing 1, so the movable block 9 slides along the screw rod 5 to adjust the cutting position of the cutting knife 12. The lifting cylinder 10 performs telescopic movement, and the lifting cylinder 10 pushes the knife seat 11 from the top to adjust the height of the cutting knife 12.

[0028] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A cutting device for cast film production, comprising a cutting housing (1), characterized in that: The interior of the cutting machine housing (1) is slidably connected to a porous placement table (3); the bottom end of the inner wall of the cutting machine housing (1) is installed with a lifting mechanism (4); the top end of the inner wall of the cutting machine housing (1) is rotatably connected to a screw rod (5); the middle part of the screw rod (5) is threadedly connected to a movable block (9) slidably connected to the cutting machine housing (1); the bottom end of the movable block (9) is provided with a knife seat (11); the bottom end of the knife seat (11) is fixedly installed with a cutting knife (12); a movable opening (2) is opened on the surface of the cutting machine housing (1); a retracting mechanism (13) is fixedly installed on one side of the cutting machine housing (1); and a fixing mechanism (14) is fixedly installed on the other side of the cutting machine housing (1). A vacuum pump (7) is provided. The lifting mechanism (4) comprises a screw (42) and two direction plates (44). The surface of the screw (42) is threadedly connected to two sliding blocks (43) which are slidably connected to the cutting machine housing (1). The top ends of the two sliding blocks (43) are respectively connected to the bottom ends of the two direction plates (44). The retracting mechanism (13) comprises a mounting platform (131) and a vertical plate (132). The top end of the mounting platform (131) is fixedly connected to the bottom end of the vertical plate (132). The top end of the vertical plate (132) is rotatably connected to a direction shaft (137). A reeling roller (138) is fixedly installed in the middle of the direction shaft (137).

2. A cutting device for cast film production according to claim 1, characterized in that: A positioning seat (45) is fixedly mounted in the middle of the bottom end of the porous placement table (3), the top ends of the two direction plates (44) are rotatably connected to the two sides of the positioning seat (45), and a servo motor (41) for driving the screw rod (42) to rotate is fixedly mounted on the surface of the cutting machine housing (1).

3. A cutting device for cast film production according to claim 1, characterized in that: A driven pulley (136) is fixedly mounted on the surface of the direction shaft (137), a motor (133) is fixedly mounted in the middle of one side of the vertical plate (132), a driving pulley (135) is fixedly mounted on the output end of the motor (133), and a belt body (134) is transmission-connected between the driving pulley (135) and the driven pulley (136).

4. A cutting device for cast film production according to claim 1, characterized in that: One end of the mounting platform (131) is fixedly connected to the cutting machine housing (1).

5. A cutting device for cast film production according to claim 1, characterized in that: A stepping motor (6) for driving the screw rod (5) to rotate is fixedly mounted on the cutting machine housing (1).

6. A cutting device for cast film production according to claim 1, characterized in that: The air outlet of the vacuum pump (7) is fixedly connected to an exhaust pipe (8), the bottom end of the porous placement table (3) is fixedly connected to a plurality of connection covers (14), and the air inlet of the vacuum pump (7) is fixedly connected to a plurality of extraction hoses (15) extending into the interior of the connection covers (14).

7. A cutting device for cast film production according to claim 1, characterized in that: A lifting cylinder (10) is fixedly mounted on the bottom end of the movable block (9), and the movable end of the lifting cylinder (10) is fixedly connected to the top end of the knife seat (11).

Images