Stretching film cutting device of box sealing machine

Abstract

The utility model relates to the technical field of stretching film cutting-off devices, in particular to a stretching film cutting-off device of a box sealing machine, which improves the convenience of automatic fixing before a stretching film is cut off, and improves the convenience when the stretching film is used again. Comprising a base and a cutting table installed at the top end of the base, and a cutter groove is formed in the top end of the cutting table; the cutter is installed at the bottom end of the supporting device, the multiple sets of guide columns are installed on the supporting device in an up-down sliding mode, the supporting device is used for driving the cutter and the multiple sets of guide columns to move in a lifting mode, and the air suction box is installed at the bottom ends of the multiple sets of guide columns; a trigger device is arranged on the supporting device and used for elastically supporting the guide column, the trigger device is used for controlling the air suction device to suck air into the air suction box, and the bottom end of the air suction box communicates with an air inlet.

Description

Technical Field

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

[0002] As an important packaging material, stretch film plays an important role in the packaging process due to its excellent tensile properties, shrinkage properties and antistatic properties. After packaging is completed, it is usually necessary to cut off the unused stretch film for continued use next time.

[0003] Currently in the existing cutting devices, such as the patent with authorization announcement number CN212170520U, the utility model relates to a wide-width stretch film cutting device, including a workbench, a fixed support frame is provided on one side of the workbench, a crossbeam is provided on the support frame, a winding roller is provided on the rear side of the workbench, two second brackets are provided on the workbench, a second mounting frame is provided on the second bracket, a lower roller is provided on the second mounting frame, a cylinder is provided on the crossbeam, the output shaft of the cylinder passes through the crossbeam to connect a movable plate, and one end of the movable plate is provided in a first slot.

[0004] However, it was found during use of the device that it is not convenient to automatically fix the front end of the cut stretch film, which reduces the convenience of use. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a stretch film cutting device for a box sealing machine, which improves the convenience of automatic fixing of the stretch film before cutting and improves the convenience of reusing the stretch film.

[0006] The utility model discloses a stretch film cutting device for a box sealing machine, comprising a base and a cutting table, wherein the cutting table is mounted on the top of the base, and a knife groove is arranged on the top of the cutting table; the utility model also comprises a supporting device, a triggering device, an air suction device, a cutting tool, an air suction box and a plurality of guide columns, wherein the cutting tool is mounted on the bottom of the supporting device, and the plurality of guide columns are all mounted on the supporting device for sliding up and down, the supporting device is used for driving the cutting tool and the plurality of guide columns to move up and down, the air suction box is mounted on the bottom of the plurality of guide columns, a triggering device is arranged on the supporting device, the triggering device is used for elastically supporting the guide columns, and the triggering device is used for controlling the air suction device to suck air into the air suction box, and the bottom end of the air suction box is connected to an air inlet The stretch film is conveyed between the cutting table and the tool. When the sealing process is completed, the tool and multiple sets of guide columns are driven downward by the support device, so that the multiple sets of guide columns drive the suction box to move downward. After the suction box moves downward, it first contacts the stretch film, and the suction box presses the stretch film downward to the top of the cutting table. At this time, the support device continues to move downward, so that the trigger device is activated and the suction device is controlled to suck air into the suction box, so that the suction box adsorbs and fixes the stretch film through the bottom air inlet, and then the tool cooperates with the knife groove of the cutting table to cut the stretch film, thereby improving the convenience of fixing the stretch film before cutting and improving the convenience of reusing the stretch film.

[0007] Preferably, the supporting device includes a frame, an electric cylinder, a first supporting plate, a telescopic rod, a first spring and a second supporting plate, the frame is installed at the top of the base, the fixed end of the electric cylinder is installed at the top of the frame, the movable end of the electric cylinder is connected to the top of the second supporting plate, the first supporting plate is slidably installed on the frame up and down, the top of the tool is connected to the bottom end of the first supporting plate, multiple groups of guide columns are slidably installed on the first supporting plate up and down, the bottom ends of multiple groups of telescopic rods are connected to the top of the first supporting plate, the top ends of multiple groups of telescopic rods are connected to the bottom ends of the second supporting plates, and multiple groups of first springs are respectively fitted on the outer side walls of the multiple groups of telescopic rods; the second supporting plate is pushed downward by the electric cylinder, so that the second supporting plate drives the first supporting plate to move downward through the multiple groups of telescopic rods and the multiple groups of first springs, so that the first supporting plate drives the tool and the multiple groups of guide columns to move downward, thereby improving the buffering effect of the tool when cutting the stretch film and improving the convenience of use of the device.

[0008] Preferably, the trigger device includes multiple groups of support rings, multiple groups of second springs, a top plate, a fixed seat, a contact switch and a controller, the multiple groups of support rings are respectively mounted on the outer walls of the multiple groups of guide columns, the multiple groups of second springs are respectively fitted on the outer walls of the multiple groups of guide columns, the top plate is mounted on the top of the multiple groups of guide columns, the fixed seat is mounted on the top of the first support plate, the contact switch is mounted on the lower side wall of the fixed seat, and the controller is mounted on the outer wall of the frame; when the suction box presses the stretch film on the top of the cutting table, the first support plate continues to move downward and drives the fixed seat and the contact switch to move downward, so that the contact switch contacts the top of the top plate, and the contact switch controls the suction device to start through the controller, so that the suction device sucks air into the suction box, thereby improving the convenience of the suction box automatically adsorbing and fixing the stretch film.

[0009] Preferably, the suction device includes a negative pressure tank, a vacuum pump and a valve, the vacuum pump input end is connected to the negative pressure tank, the valve is connected and arranged on the negative pressure tank, and the valve input end is connected to the suction box through a hose; the vacuum pump sucks air into the negative pressure tank to form a negative pressure in the negative pressure tank, and the controller controls the valve to open so that the negative pressure tank sucks air into the suction box through the hose, thereby improving the convenience of using the device.

[0010] Preferably, it also includes a cylinder and a filter screen, the cylinder is connected to the valve input end, and the filter screen is installed inside the cylinder; the air entering the negative pressure tank is filtered through the filter screen, thereby reducing the pollution of the negative pressure tank by outdoor dirt.

[0011] Preferably, it also includes a limiter, which is installed on the top of the first support plate; the limiter supports the top plate in a limited manner to prevent the top plate from squeezing and damaging the contact switch.

[0012] Preferably, it also includes a supporting roller, which is installed on the top of the base; the stretched film is guided and supported by the supporting roller, thereby improving the convenience of cutting the stretched film.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows: the stretch film is transported between the cutting table and the tool, and when the sealing process is completed, the tool and multiple groups of guide columns are driven downward by the supporting device, so that the multiple groups of guide columns drive the suction box to move downward, and the suction box first contacts the stretch film after moving downward, and the suction box presses the stretch film downward to the top of the cutting table. At this time, the supporting device continues to move downward, so that the trigger device is activated and the suction device is controlled to suck air into the suction box, so that the suction box adsorbs and fixes the stretch film through the bottom air inlet, and then the tool cooperates with the knife groove of the cutting table to cut the stretch film, thereby improving the convenience of fixing the stretch film before cutting, and improving the convenience of reusing the stretch film. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0015] Figure 2 is an isometric partial structural diagram of the connection between the tool and the first support plate, etc.;

[0016] Figure 3 It is a schematic diagram of the axonometric partial structure of the connection between the base and the support rollers, etc.;

[0017] Figure 4 is a schematic diagram of an axonometric partial structure of the connection between the first support plate and the limiter, etc.;

[0018] Figure 5 It is a schematic diagram of the axonometric structure of the connection between the negative pressure tank and the vacuum pump.

[0019] Markings in the attached drawings: 1. base; 2. cutting table; 3. tool; 4. suction box; 5. guide column; 6. frame; 7. electric cylinder; 8. first support plate; 9. telescopic rod; 10. first spring; 11. second support plate; 12. support ring; 13. second spring; 14. top plate; 15. fixed seat; 16. contact switch; 17. controller; 18. negative pressure tank; 19. vacuum pump; 20. valve; 21. cylinder; 22. filter; 23. limiter; 24. support roller. DETAILED DESCRIPTION

[0020] In order to facilitate the understanding of the utility model, the utility model will be described more comprehensively below with reference to the relevant drawings. The utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive. Example 1

[0021] like Figures 1 to 5 As shown, a stretch film cutting device of a box sealing machine of the utility model comprises a base 1 and a cutting table 2, wherein the cutting table 2 is mounted on the top of the base 1, and a knife groove is arranged on the top of the cutting table 2; it also comprises a supporting device, a triggering device, an air suction device, a tool 3, an air suction box 4 and a plurality of guide columns 5, wherein the tool 3 is mounted on the bottom of the supporting device, and the plurality of guide columns 5 are all mounted on the supporting device for sliding up and down, the supporting device is used for driving the tool 3 and the plurality of guide columns 5 to move up and down, the air suction box 4 is mounted on the bottom of the plurality of guide columns 5, a triggering device is arranged on the supporting device, the triggering device is used for elastically supporting the guide columns 5, and the triggering device is used for controlling the air suction device to suck air into the air suction box 4, and the bottom end of the air suction box 4 is connected with an air inlet;

[0022] like Figure 1 and Figure 3As shown, the supporting device includes a frame body 6, an electric cylinder 7, a first supporting plate 8, a telescopic rod 9, a first spring 10 and a second supporting plate 11. The frame body 6 is mounted on the top of the base 1, the fixed end of the electric cylinder 7 is mounted on the top of the frame body 6, the movable end of the electric cylinder 7 is connected to the top of the second supporting plate 11, the first supporting plate 8 is slidably mounted on the frame body 6, the top of the tool 3 is connected to the bottom of the first supporting plate 8, multiple groups of guide columns 5 are slidably mounted on the first supporting plate 8, multiple groups of telescopic rods 9 are connected to the top of the first supporting plate 8, multiple groups of telescopic rods 9 are connected to the bottom of the second supporting plate 11, and multiple groups of first springs 10 are respectively fitted on the outer side walls of multiple groups of telescopic rods 9;

[0023] In this embodiment, the stretch film is transported between the cutting table 2 and the tool 3. After the sealing process is completed, the tool 3 and the multiple groups of guide columns 5 are driven downward by the supporting device, so that the multiple groups of guide columns 5 drive the suction box 4 to move downward. After the suction box 4 moves downward, it first contacts the stretch film, and the suction box 4 presses the stretch film downward to the top of the cutting table 2. At this time, the supporting device continues to move downward, so that the trigger device is activated and the suction device is controlled to suck air into the suction box 4, so that the suction box 4 adsorbs and fixes the stretch film through the bottom air inlet, and then the tool 3 cooperates with the knife groove of the cutting table 2 to cut the stretch film, thereby improving the convenience of fixing the stretch film before cutting, and improving the convenience of reusing the stretch film. Example 2

[0024] On the basis of Example 1, Figure 2 and Figure 4 As shown, a stretch film cutting device for a box sealing machine of the utility model, the trigger device includes multiple groups of support rings 12, multiple groups of second springs 13, top plates 14, fixed seats 15, contact switches 16 and controllers 17, multiple groups of support rings 12 are respectively mounted on the outer walls of multiple groups of guide columns 5, multiple groups of second springs 13 are respectively fitted on the outer walls of multiple groups of guide columns 5, top plates 14 are mounted on the top of multiple groups of guide columns 5, fixed seats 15 are mounted on the top of the first support plate 8, contact switches 16 are mounted on the lower side wall of the fixed seats 15, and controllers 17 are mounted on the outer wall of the frame 6;

[0025] like Figure 5 As shown, the air suction device includes a negative pressure tank 18, a vacuum pump 19 and a valve 20, the input end of the vacuum pump 19 is connected to the negative pressure tank 18, the valve 20 is connected and arranged on the negative pressure tank 18, and the input end of the valve 20 is connected to the air suction box 4 through a hose;

[0026] like Figure 5 As shown, it also includes a cylinder 21 and a filter 22, the cylinder 21 is connected and arranged on the input end of the valve 20, and the filter 22 is installed inside the cylinder 21;

[0027] like Figure 4As shown, it also includes a limiting member 23, which is installed on the top of the first support plate 8;

[0028] like Figure 5 As shown, it also includes a support roller 24, which is installed on the top of the base 1;

[0029] In this embodiment, the second support plate 11 is pushed downward by the electric cylinder 7, so that the second support plate 11 drives the first support plate 8 to move downward through multiple groups of telescopic rods 9 and multiple groups of first springs 10, so that the first support plate 8 drives the tool 3 and multiple groups of guide columns 5 to move downward, thereby improving the buffering effect of the tool 3 when cutting the stretch film and improving the convenience of using the device. When the suction box 4 presses the stretch film on the top of the cutting table 2, the first support plate 8 continues to move downward and drives the fixed seat 15 and the contact switch 16 to move downward, so that the contact switch 16 contacts with the top of the top plate 14. The contact switch 16 controls the suction device to start through the controller 17, so that the suction device sucks air into the suction box 4, thereby improving the convenience of the suction box 4 to automatically adsorb and fix the stretch film.

[0030] The utility model discloses a stretch film cutting device for a box sealing machine, which conveys the stretch film between a cutting table 2 and a cutter 3 during operation. When the sealing process is completed, the cutter 3 and a plurality of guide columns 5 are driven downward by a supporting device, so that the plurality of guide columns 5 drive an air suction box 4 to move downward. After the air suction box 4 moves downward, it first contacts the stretch film, and the air suction box 4 presses the stretch film downward to the top of the cutting table 2. At this time, the supporting device continues to move downward, so that the trigger device is started and then controls the air suction device to suck air into the air suction box 4, so that the air suction box 4 adsorbs and fixes the stretch film through the bottom air inlet, and then the cutter 3 cooperates with the knife groove of the cutting table 2 to cut the stretch film.

[0031] The electric cylinder 7, contact switch 16, controller 17 and vacuum pump 19 of the stretch film cutting device of a box sealing machine of the utility model are purchased on the market, and technicians in the industry only need to install and operate them according to the accompanying instruction manual, without the need for creative labor by technicians in this field.

[0032] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A stretch film cutting device for a box sealing machine, comprising a base (1) and a cutting table (2), wherein the cutting table (2) is mounted on the top of the base (1), and a knife groove is provided on the top of the cutting table (2); characterized in that: The invention also comprises a supporting device, a triggering device, an air suction device, a tool (3), an air suction box (4) and a plurality of guide columns (5), wherein the tool (3) is mounted at the bottom end of the supporting device, the plurality of guide columns (5) are mounted on the supporting device so as to slide up and down, the supporting device is used to drive the tool (3) and the plurality of guide columns (5) to move upward and downward, the air suction box (4) is mounted at the bottom end of the plurality of guide columns (5), a triggering device is arranged on the supporting device, the triggering device is used to elastically support the guide columns (5), and the triggering device is used to control the air suction device to suck air into the air suction box (4), and the bottom end of the air suction box (4) is connected to an air inlet.

2. A stretch film cutting device for a box sealing machine as claimed in claim 1, characterized in that: The support device comprises a frame (6), an electric cylinder (7), a first support plate (8), a telescopic rod (9), a first spring (10) and a second support plate (11); the frame (6) is mounted on the top of the base (1); the fixed end of the electric cylinder (7) is mounted on the top of the frame (6); the movable end of the electric cylinder (7) is connected to the top of the second support plate (11); the first support plate (8) is mounted on the frame (6) in an up-and-down sliding manner; the top of the tool (3) is connected to the bottom of the first support plate (8); the plurality of guide columns (5) are mounted on the first support plate (8) in an up-and-down sliding manner; the bottom ends of the plurality of telescopic rods (9) are connected to the top of the first support plate (8); the top ends of the plurality of telescopic rods (9) are connected to the bottom of the second support plate (11); and the plurality of first springs (10) are respectively fitted on the outer side walls of the plurality of telescopic rods (9).

3. A stretch film cutting device for a box sealing machine as claimed in claim 1, characterized in that: The trigger device comprises a plurality of support rings (12), a plurality of second springs (13), a top plate (14), a fixing seat (15), a contact switch (16) and a controller (17). The plurality of support rings (12) are respectively mounted on the outer side walls of the plurality of guide columns (5). The plurality of second springs (13) are respectively fitted on the outer side walls of the plurality of guide columns (5). The top plate (14) is mounted on the top of the plurality of guide columns (5). The fixing seat (15) is mounted on the top of the first support plate (8). The contact switch (16) is mounted on the lower side wall of the fixing seat (15). The controller (17) is mounted on the outer side wall of the frame (6).

4. A stretch film cutting device for a box sealing machine as claimed in claim 1, characterized in that: The air suction device comprises a negative pressure tank (18), a vacuum pump (19) and a valve (20); an input end of the vacuum pump (19) is in communication with the negative pressure tank (18); the valve (20) is arranged on the negative pressure tank (18); and an input end of the valve (20) is in communication with the air suction box (4) via a hose.

5. A stretch film cutting device for a box sealing machine as claimed in claim 4, characterized in that: It also includes a cylinder (21) and a filter screen (22), wherein the cylinder (21) is arranged in communication with the input end of the valve (20), and the filter screen (22) is installed inside the cylinder (21).

6. A stretch film cutting device for a box sealing machine as claimed in claim 2, characterized in that: It also includes a limiting member (23), which is mounted on the top of the first supporting plate (8).

7. A stretch film cutting device for a box sealing machine as claimed in claim 1, characterized in that: It also includes a support roller (24), which is installed on the top of the base (1).

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