CN211968600U

CN211968600U - Tensioning device of bag making machine

Info

Publication number: CN211968600U
Application number: CN202020390860.1U
Authority: CN
Inventors: 裘敏强
Original assignee: Haining Hesheng Color Printing Co ltd
Current assignee: Haining Hesheng Color Printing Co ltd
Priority date: 2020-03-25
Filing date: 2020-03-25
Publication date: 2020-11-20
Anticipated expiration: 2030-03-25

Abstract

The utility model relates to a overspeed device tensioner of system bag machine, it includes the frame, the frame is rotated and is connected with along self axis pivoted unwinding roller, be equipped with the guide bar in the frame, the frame is equipped with fixed guide arm, be equipped with straining device between unwinding roller and the guide bar, fixed guide arm height is less than straining device, straining device includes the tensioning roller, the tensioning roller both ends are equipped with the fixed block, rotate between tensioning roller and the fixed block and connect, the frame both ends are equipped with the fixed slot that link up, the fixed block is arranged in the fixed slot, the fixed block below is equipped with first spring, the fixed block top is equipped with the second spring. The utility model discloses can make system bag machine overspeed device tensioner's work more steady in work for the difficult deformation that takes place of film.

Description

Tensioning device of bag making machine

Technical Field

The utility model belongs to the technical field of the technique of system bag machine and specifically relates to a overspeed device tensioner of system bag machine is related to.

Background

The bag making machine is a machine for making various plastic packaging bags or packaging bags made of other materials, the processing range of the bag making machine is various plastic packaging bags with different sizes, thicknesses and specifications, the plastic packaging bags are generally taken as main products, the bag making machine generally puts a roll of film for making the packaging bags into a unwinding roller during production, the film enters a heat sealing and cutting area for processing and forming through a guide device, certain time is needed during heat sealing and cutting, therefore, the film advances at intervals during working, the film stops conveying during the heat sealing and cutting, but the unwinding roller continuously rotates for a section due to inertia, the film becomes loose, and a tensioning device needs to be added behind the unwinding roller.

The tensioning device of the existing bag making machine is shown in fig. 5, and comprises a frame 1, an unwinding roller 2 is arranged on the frame 1, a plurality of guide rollers 25 are fixedly connected between the unwinding roller 2 and a guide device 26, a tensioning mechanism 7 is arranged between the guide rollers 25, the tensioning mechanism 7 comprises a connecting rod 24, one end of the connecting rod 24 is rotatably connected with a tensioning roller 5, the other end of the connecting rod 24 is rotatably connected onto the frame 1, a fixed guide rod 3 is arranged below the connecting rod 24, the connecting rod 24 is abutted to the fixed guide rod 3, when the bag making machine works, a film passes through the tensioning roller 5 from the lower part of the tensioning roller 5, then the film passes through the guide device 26 to be subjected to heat sealing and cutting work, the tension of the film drives the tensioning roller 5 to swing when the film moves, so that the tensioning roller 5 ascends, when the heat sealing and cutting are carried out, the.

The above prior art solutions have the following drawbacks: when carrying out heat-seal and cutting work, the film that cuts the department can stop moving, and unreel roller 2 and can continue to unreel because of inertia, and tensioning roller 5 can receive acceleration of gravity, can accelerate the downstream under acceleration of gravity's effect, at the heat-seal with cut the back, the film continues to move forward, the power that the film received in this twinkling of an eye is great, the film takes place to warp easily.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims at providing a overspeed device tensioner of system bag machine, it can make system bag machine overspeed device tensioner's work more steady in work for the difficult deformation that takes place of film.

The above technical purpose of the present invention can be achieved by the following technical solutions:

the utility model provides a overspeed device tensioner of system bag machine, includes the frame, the frame rotates to be connected with along self axis pivoted unreels the roller, be equipped with the guide bar in the frame, the frame is equipped with fixed guide arm, be equipped with straining device between fixed guide arm and the guide bar, fixed guide arm height is less than straining device, straining device includes the tensioning roller, the tensioning roller both ends are rotated and are connected with the fixed block, the frame both ends are equipped with the fixed slot that link up, the fixed block is arranged in the fixed slot, the fixed block below is equipped with first spring, the one end of first spring contacts with the fixed block outer wall, the other end and the fixed slot inner wall contact of first spring, the fixed block top is equipped with the second spring, the one end of second spring contacts with the outer wall of fixed block, the other end of second spring contacts with the.

By adopting the technical scheme, the film on the unwinding roller passes through the lower part of the fixed guide rod and then passes through the upper part of the tensioning mechanism, then passes through the guide rod for heat sealing and cutting, when the film moves forwards, the tensioning roller moves downwards for a certain distance under the action of the tensioning force of the film, the position of the tensioning roller is stabilized when the tensioning force is balanced with the spring force, when the heat sealing and cutting work is carried out, the film in front stops moving forwards, the unwinding roller continues to rotate for a small angle under the action of inertia, so that the film becomes loose, the spring below is initially in a compressed state, after the tension of the film disappears, the tensioning roller moves upwards for a certain distance under the action of the spring force and then is stabilized, the self gravity of the tensioning roller offsets the elastic force of a part of the spring when the tensioning roller moves upwards, and the spring above moves upwards to a certain position and plays a role, make the tensioning roller comparatively gentle stable when removing for the difficult emergence of film is out of shape.

The utility model discloses further set up to: the upper and lower inner walls of fixed slot are equipped with spring groove one, the upper and lower outer wall of fixed block is equipped with spring groove two, spring groove one and spring groove two are coaxial, spring groove one is arranged in to the one end of first spring, spring groove two is arranged in to the other end of first spring, spring groove one is arranged in to the one end of second spring, spring groove two is arranged in to the other end of second spring.

Through adopting above-mentioned technical scheme, the both ends of first spring and second spring are arranged in spring groove one and spring groove two in and can be so that the position of spring comparatively fixed for the difficult emergence of spring removes, makes the work that the spring can be more stable.

The utility model discloses further set up to: the machine frame is provided with a plurality of tensioning mechanisms in the advancing direction of the film, the heights of the tensioning mechanisms are arranged in a zigzag manner, and the film passes through the lower part of the tensioning mechanism at the lower part and passes through the upper part of the tensioning mechanism at the higher part.

Through adopting above-mentioned technical scheme, a plurality of straining device can make lax film can obtain the tensioning completely, and the tensioning roller removes less distance and can make the film obtain the tensioning, and the life of spring can obtain the extension.

The utility model discloses further set up to: the end face, far away from the tensioning roller, of the rack is provided with a slot, an inserting plate is arranged in the slot, and the inserting plate covers the fixing slot.

Tensioning roller is in the work, has the possibility of taking place to remove about in film direction of advance, probably causes the skew of film, through adopting above-mentioned technical scheme, the picture peg can play the effect that blocks to the fixed block for the fixed block is difficult for taking place the skew, makes tensioning roller be difficult for taking place the skew, makes the film be difficult for taking place the skew when advancing.

The utility model discloses further set up to: the plug board is provided with a convex block deviating from the end face of the rack, and the convex block is horizontally arranged.

By adopting the technical scheme, the lug can make the plug board more convenient when being inserted and pulled out, and can be more convenient when the tensioning mechanism is maintained after the plug board is pulled out, so that maintenance personnel can more conveniently maintain the tensioning mechanism.

The utility model discloses further set up to: the improved plug board is characterized in that scale marks which are arranged up and down are arranged on the outer wall of the rack enclosed by the slots, the scale marks are horizontally arranged, the fixed block is provided with pointer lines facing the end face of the plug board, and the pointer lines are horizontally arranged.

Through adopting above-mentioned technical scheme, the design of scale mark can make the workman observe whether the spring elasticity at the both ends of tensioning roller is the same, can be so that the spring elasticity at tensioning roller both ends is the same for the tensile force at both ends is the same about the film, makes the difficult emergence of film warp.

The utility model discloses further set up to: and positioning steps are arranged at two ends of the tensioning roller.

Through adopting above-mentioned technical scheme, the effect of location is played in the time of the tensioning roller can be installed with the fixed block again to the location step, can be so that can be more convenient installation target in place when tensioning roller and fixed block are installed.

The utility model discloses further set up to: the utility model discloses a set of unreeling roller, including unreeling roller, stopper and limiting plate, unreel the roller, the both ends of unreeling the roller are equipped with the stopper, stopper sliding connection is in unreeling the roller, the stopper with the axle center between the roller with unreeling, the stopper includes the limiting plate, the limiting plate deviates from to unreel the roller end and is equipped with the guide and moves the cover, the guide is moved the cover and is.

Through adopting above-mentioned technical scheme, the stopper can be so that the position of unreeling the roller comparatively fixed for the position of film obtains fixedly, is difficult for taking place the skew in the time of making the film remove in the front and back.

To sum up, the utility model discloses a beneficial technological effect does:

1. the film on the unwinding roller passes through the lower part of the fixed guide rod, then passes through the upper part of the tensioning mechanism, then passes through the guide rod for heat sealing and cutting, when the film moves forwards, the tensioning roller moves downwards for a certain distance under the action of the tensioning force of the film, the position of the tensioning roller is stabilized when the tensioning force and the spring force are balanced, when the heat sealing and cutting are carried out, the film stops moving forwards, the unwinding roller continues to rotate for a small angle under the action of inertia, so that the film becomes loose, the tensioning roller moves upwards for a certain distance under the action of the spring force and then is stabilized, the self gravity of the tensioning roller offsets the elastic force of a part of spring when the tensioning roller moves upwards, so that the tensioning roller moves smoothly and stably, and the film is not easy to deform;

2. the spring groove can make the position of spring comparatively fixed for the work that the spring can be more stable, and the slot can play the effect that blocks to the tensioning roller, makes the difficult emergence skew of tensioning roller, and the elasticity of spring can be observed at any time to the scale mark, makes the spring elasticity at tensioning roller both ends the same, makes the tensile force about the film the same.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is an enlarged partial schematic view of portion A of FIG. 1;

FIG. 3 is a schematic view of the connection of the tensioning mechanism to the frame;

FIG. 4 is an enlarged partial view of portion B of FIG. 1;

fig. 5 is a schematic structural diagram of the background art.

In the figure, 1, a frame; 2. unwinding rollers; 3. fixing the guide rod; 4. a guide bar; 5. a tension roller; 6. a fixed block; 7. a tensioning mechanism; 8. positioning a step; 9. a bearing; 10. fixing grooves; 11. a first spring; 12. a second spring; 13. a first spring groove; 14. a second spring groove; 15. a slot; 16. inserting plates; 17. a bump; 18. scale lines; 19. a pointer line; 20. a limiting plate; 21. a guide sleeve; 22. a limiting block; 23. a fastener; 24. a connecting rod; 25. a guide roller; 26. a guide device.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 and 4, a tensioning device of a bag making machine disclosed by the utility model comprises a frame 1, an unwinding roller 2 rotating along its axis is rotatably connected on the frame 1, a guide rod 4 is arranged in front of the frame 1, a fixed guide rod 3 rotatably connected along its axis is rotatably connected on the frame 1 in front of the unwinding roller 2, three tensioning mechanisms 7 are arranged between the fixed guide rod 3 and the guide rod 4, the middle tensioning mechanism 7 of the three tensioning rollers 5 is lower than the tensioning mechanisms 7 at both sides, the height of the fixed rod is lower than that of the tensioning mechanism 7, the height of the guide rod 4 is located between the high tensioning mechanism 7 and the low tensioning mechanism 7, the left and right ends of the unwinding roller 2 are slidably connected with a stopper 22, the stopper 22 and the unwinding roller 2 are coaxial, the stopper 22 comprises a stopper plate 20, a guide sleeve 21 is arranged at the end of the stopper plate 20 away from the unwinding roller 2, a fastener 23 is arranged on the guide sleeve, the fasteners 23 are bolts; the fastening piece 23 fastens the limiting block 22, so that the film on the unwinding roller 2 is not easy to shift when moving.

Referring to fig. 2, the tensioning mechanism 7 comprises a tensioning roller 5, fixing blocks 6 are arranged at two ends of the tensioning roller 5, the tensioning roller 5 and the fixing blocks 6 are connected together through bearings 9, and positioning steps 8 are arranged at two ends of the tensioning roller 5; the positioning step 8 can play a positioning role when the tensioning roller 5 and the fixing block 6 are installed, so that the tensioning roller 5 and the fixing block 6 can be installed in place more conveniently.

Referring to fig. 1 and 3, through fixing grooves 10 are formed in two ends of a frame 1, two first spring grooves 13 are formed in the upper side wall and the lower side wall of each fixing groove 10, the arrangement direction of the two first spring grooves 13 is the advancing direction of a film, two second spring grooves 14 are formed in the upper end face and the lower end face of a fixing block 6, two first springs 11 are arranged below the fixing block 6, the lower ends of the first springs 11 are arranged in the first spring grooves 13, the upper ends of the first springs 11 are arranged in the second spring grooves 14, a second spring 12 is arranged above the fixing block 6, the upper ends of the second springs 12 are arranged in the first spring grooves 13, and the lower ends of the second springs 12 are arranged in; the spring can make the lax film tensioning get up when the film stops to remove for the film tensioning is difficult for lax, and spring groove one 13 and spring groove two 14 can make the position of spring comparatively fixed, make the difficult emergence removal of spring, make the work of spring comparatively stable.

Referring to fig. 1, a slot 15 is formed in an end surface of the frame 1 far away from the tension roller 5, the slot 15 is arranged around the fixing groove 10, an opening is formed above the slot 15, an inserting plate 16 is arranged in the slot 15, and the inserting plate 16 is inserted into the slot 15 through the opening; the inserting plate 16 can play a role in blocking the fixing block 6, so that the fixing block 6 is not prone to left and right deviation, the tensioning roller 5 is not prone to deviation, and the film is not prone to deviation when advancing. The outer side end face of the inserting plate 16 is provided with a horizontally arranged convex block 17, and the convex block 17 can enable the inserting plate 16 to be more convenient to insert and extract, so that maintenance personnel can repair and maintain the tensioning mechanism 7 more conveniently.

Referring to fig. 1 and 3, be equipped with scale mark 18 on the frame 1 outer wall, scale mark 18 is located the fixed slot 10 left and right sides, scale mark 18 level sets up, be equipped with pointer line 19 towards picture peg 16 terminal surface at fixed block 6, pointer line 19 level sets up, through the position of pointer line 19 directive scale mark 18, the workman can observe whether the spring elasticity at tensioning roller 5 both ends is the same, can in time make the adjustment when spring elasticity is different, make the film about advancing the tensile force that both sides received the same, make the film difficult because of the atress difference takes place to warp.

The implementation principle of the embodiment is as follows: the film on the unwinding roller 2 passes through the lower part of the fixed guide rod 3, then passes through the upper part of the tensioning mechanism 7 close to the unwinding roller 2, then passes through the lower part of the middle tensioning mechanism 7, then passes through the upper part of the tensioning mechanism 7 far away from the unwinding roller 2, then passes through the lower part of the guide rod 4, enters a heat sealing and cutting working area, when the film stops advancing, the position of the tensioning roller 5 is adjusted by the spring elastic action of the tensioning mechanism 7, the film is tensioned, and the spring can enable the tensioning roller 5 to move smoothly, so that the film is not easy to deform.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a overspeed device tensioner of system bag machine, includes frame (1), frame (1) rotates to be connected with along self axis pivoted unreels roller (2), be equipped with guide bar (4) on frame (1), its characterized in that: frame (1) is equipped with fixed guide arm (3), be equipped with straining device (7) between fixed guide arm (3) and guide bar (4), fixed guide arm (3) highly is less than straining device (7), straining device (7) include tensioning roller (5), tensioning roller (5) both ends are rotated and are connected with fixed block (6), frame (1) both ends are equipped with fixed slot (10) that link up, fixed block (6) are arranged in fixed slot (10), fixed block (6) below is equipped with first spring (11), the one end of first spring (11) contacts with fixed block (6) outer wall, the other end and fixed slot (10) inner wall contact of first spring (11), fixed block (6) top is equipped with second spring (12), the one end of second spring (12) contacts with the outer wall of fixed block (6), the other end of the second spring (12) is in contact with the outer wall of the fixed block (6).

2. A tensioning device for a bag machine according to claim 1, characterised in that: the upper and lower inner wall of fixed slot (10) is equipped with spring groove one (13), the upper and lower outer wall of fixed block (6) is equipped with spring groove two (14), spring groove one (13) and spring groove two (14) coaxial line, the one end of first spring (11) is arranged in spring groove one (13), the other end of first spring (11) is arranged in spring groove two (14), the one end of second spring (12) is arranged in spring groove one (13), the other end of second spring (12) is arranged in spring groove two (14).

3. A tensioning device for a bag machine according to claim 2, characterised in that: the film stretching machine is characterized in that a plurality of tensioning mechanisms (7) are arranged on the machine frame (1) in the advancing direction of a film, the height of each tensioning mechanism (7) is arranged in a zigzag manner, and the film penetrates through the lower portion of the tensioning mechanism (7) at the lower position and penetrates through the upper portion of the tensioning mechanism (7) at the higher position.

4. A tensioning device for a bag machine according to claim 1, characterised in that: the end face, far away from the tensioning roller (5), of the rack (1) is provided with a slot (15), an inserting plate (16) is arranged in the slot (15), and the inserting plate (16) covers the fixing groove (10).

5. The tensioning device of a bag machine according to claim 4, wherein: the plug board (16) deviates from the end face of the rack (1) and is provided with a convex block (17), and the convex block (17) is horizontally arranged.

6. The tensioning device of a bag machine according to claim 5, wherein: the improved plug board is characterized in that scale marks (18) arranged from top to bottom are arranged on the outer wall of the rack (1) enclosed by the slots (15), the scale marks (18) are horizontally arranged, pointer lines (19) are arranged on the fixed block (6) towards the end face of the plug board (16), and the pointer lines (19) are horizontally arranged.

7. A tensioning device for a bag machine according to claim 1, characterised in that: and positioning steps (8) are arranged at two ends of the tensioning roller (5).

8. A tensioning device for a bag machine according to claim 1, characterised in that: the both ends of unreeling roller (2) are equipped with stopper (22), stopper (22) sliding connection is in unreeling roller (2), stopper (22) and unreel between roller (2) with the axle center, stopper (22) include limiting plate (20), limiting plate (20) deviate from unreeling roller (2) and hold and are equipped with and lead and move cover (21), it is equipped with fastener (23) to lead to move cover (21).