Winding film stretching packaging machine

Abstract

The utility model belongs to the technical field of wrapping film stretching packaging machines, and particularly relates to a wrapping film stretching packaging machine which comprises a base, a raw material roller is fixedly installed on the top of the base, a sliding groove is formed in the base, a sliding plate is installed in the sliding groove in a sliding mode, and a second motor is fixedly installed in the sliding groove and located below the sliding plate. A first threaded rod is fixedly mounted on an output shaft of the second motor, the upper end of the first threaded rod penetrates through the sliding plate, the first threaded rod is in threaded connection with the sliding plate, a first motor is fixedly mounted in the sliding plate, and an output shaft of the first motor penetrates through the sliding plate, extends to the outside and is fixedly provided with a rotating disc; the rotating groove is formed in the rotating disc, a plurality of sliding rods are installed in the rotating groove in a sliding mode, limiting grooves are formed in the sliding rods, and fixing blocks are installed in the limiting grooves in an inserted mode; adjustment can be conveniently carried out according to the shape of a clamped object, operation is convenient and fast, tools are not needed, and high objects can be automatically packaged.

Description

Technical Field

[0001] The utility model belongs to the technical field of stretch film packaging machines, in particular to a stretch film packaging machine. Background Art

[0002] Stretch film has good tensile properties and resilience, and can tightly wrap and fix items to prevent them from shifting, colliding, scattering or being damaged during transportation or storage. At the same time, it also has moisture-proof, dust-proof, and corrosion-resistant functions, which can further protect items from erosion by the external environment.

[0003] For example, the Chinese patent with announcement number CN220501171 U discloses a stretch film packaging machine. In view of the different stretching degrees of the stretch films used in existing products, different stretch film stretch packaging machines need to be replaced when used for different products, resulting in low efficiency. The following solution is proposed, which includes a base, two columns are symmetrically fixedly connected to one side of the base, and the tops of the two columns are fixedly connected to the same horizontal box, a first motor is fixedly installed on the horizontal box, and a first bevel gear is fixedly connected to the output shaft of the first motor, and second bevel gears are meshed and connected on both sides of the first bevel gear, and a stretching assembly is provided on the second bevel gear, a second motor is fixedly installed on the left side of the base, and a threaded rod is fixedly connected to the output shaft of the second motor. The utility model can adjust the spacing between the cylindrical rotating rods according to actual conditions to adjust the stretching of the stretch film.

[0004] The above patent has the following problems:

[0005] This patent has some shortcomings when used. For example, the above device requires workers to manually wrap the items with film, which is time-consuming and labor-intensive, potentially affecting the efficiency and quality of the packaging. Furthermore, when using the above device, workers need to work together to wrap large items, wasting labor. In view of this, we propose a stretch wrapping machine. Utility Model Content

[0006] The purpose of the present invention is to provide a wrapping film stretch packaging machine to solve the problems raised in the above background technology.

[0007] In view of this, the present invention provides a stretch film packaging machine, comprising:

[0008] A base, a raw material roller is fixedly installed on the top of the base, a sliding groove is opened in the base, a sliding plate is slidably installed in the sliding groove, a second motor is fixedly installed in the sliding groove and below the sliding plate, a threaded rod one is fixedly installed on the output shaft of the second motor, the upper end of the threaded rod one passes through the sliding plate, and the threaded rod one is threadedly connected to the sliding plate, the first motor is fixedly installed in the sliding plate, the output shaft of the first motor passes through the sliding plate and extends to the outside and is fixedly installed with a turntable;

[0009] A rotation groove is provided in the turntable, a plurality of sliding rods are slidably installed in the rotation groove, a limiting groove is provided in each of the sliding rods, a fixed block is inserted and installed in the limiting groove, and the upper end of the fixed block passes through the limiting groove and extends to the outside and is fixedly installed with a clamping plate;

[0010] A driving assembly is located in the turntable and is used to drive the plurality of sliding rods to slide;

[0011] A plurality of fixing components are respectively located in the plurality of sliding rods and are respectively used to fix the positions of the plurality of fixing blocks.

[0012] In this technical solution, when rectangular items need to be packaged, the fixing block is inserted into the corresponding sliding rod through the provided fixing assembly. The position of the fixing block can be fixed by the provided fixing assembly. The staff only needs to install the two clamping plates with the farthest distance between them to clamp and fix the rectangular items. It is convenient to adjust according to the shape of the clamped items. The operation is convenient and quick, and no tools are required.

[0013] When the items need to be packaged, the items are first placed on the top of the turntable. The driving assembly can drive the sliding rods to slide and move closer to each other. The sliding rods respectively drive the clamping plates to slide and move closer to each other. The clamping plates can fix the round items.

[0014] Then, the stretch film is covered on the article, and then the motor 1 is started. The motor 1 is powered on and drives the turntable to rotate. The turntable drives the article to rotate, and the stretch film can be automatically covered on the article. At the same time, the motor 2 is started. The motor 2 is powered on and drives the threaded rod 1 to rotate. Under the action of the thread, the threaded rod 1 moves the sliding plate downward, and the sliding plate drives the article to move downward through the turntable. This operation can automatically package higher articles.

[0015] In the above technical solution, further, the driving component includes:

[0016] Bevel gear one, the bevel gear one being rotatably mounted in the rotating groove and being located between a plurality of sliding rods, a plurality of bevel gears two being meshedly mounted on the top of the bevel gear one, a plurality of threaded rods two being fixedly mounted on ends of the plurality of bevel gears two that are away from each other, the plurality of threaded rods two being respectively located on a side of the plurality of sliding rods that are close to each other, and the plurality of threaded rods two being respectively away from each other and passing through a plurality of sliding rods, and the plurality of threaded rods two being respectively threadedly connected to the plurality of sliding rods;

[0017] The worm wheel is fixedly mounted on the bottom of the bevel gear 1, and a worm is meshedly mounted on one side of the worm wheel. One end of the worm passes through the rotating groove and extends to the outside. Several of the bevel gears 2, several threaded rods 2, worm wheels and worms are all rotatably connected to the rotating groove.

[0018] In this technical solution, the stretch film is then covered on the article, and then motor one is started. Motor one is powered on and drives the turntable to rotate, and the turntable drives the article to rotate, which can automatically cover the stretch film on the article. At the same time, motor two is started, and motor two is powered on and drives threaded rod one to rotate. Under the action of the thread, threaded rod one moves the sliding plate downward, and the sliding plate drives the article to move downward through the turntable. This operation can automatically package higher articles.

[0019] In the above technical solution, further, the fixing assembly includes:

[0020] Two limit blocks, both of which are slidably installed in the limit grooves, and the two limit blocks are respectively located on both sides of the fixed block, the sides of the two limit blocks close to each other extend into the fixed block, and the two limit blocks are plugged into the fixed block, and the sides of the two limit blocks away from each other are fixedly installed with a plurality of springs fixed to the inner wall of the limit groove;

[0021] A disc is rotatably installed in the limit groove and is located between two limit blocks. The circumferential side walls of the disc are in contact with the two limit blocks. Bevel gear three is fixedly installed on one side of the disc. Bevel gear four is meshed with the top of bevel gear three. The upper end of bevel gear four passes through the limit groove and extends to the outside. Bevel gear three and bevel gear four are both rotatably connected to the limit groove.

[0022] In this technical solution, when rectangular items need to be packaged, bevel gear four is first rotated, and bevel gear four drives bevel gear three that is meshed with it to rotate, and bevel gear three drives the disc to rotate. The rotation of the disc will squeeze the two limit blocks to slide and move away from each other. At the same time, several springs are squeezed and contracted, and then the fixed block is inserted into the corresponding sliding rod. Then, bevel gear four is released, and under the action of the rebound force of several springs, the two limit blocks slide and approach each other. Both limit blocks are inserted into the fixed block, and the position of the fixed block can be fixed. The staff only needs to install two of the clamping plates with the farthest distance to clamp and fix the rectangular items, which is convenient for adjustment according to the shape of the clamped items. The operation is convenient and quick, and no tools are required.

[0023] In the above technical solution, further, the cross-section of the disc is elliptical.

[0024] In this technical solution, it is ensured that the rotation of the disc will squeeze the two limit blocks to slide and move away from each other.

[0025] In the above technical solution, further, an operating rod is fixedly installed on the top end of the bevel gear four, and an operating disk is fixedly installed on one end of the worm.

[0026] In this technical solution, the bevel gear four is conveniently rotated by the provided operating lever, and the worm is conveniently rotated by the provided operating disk.

[0027] In the above technical solution, further, a rubber column is fixedly mounted on the worm, and the rubber column is in close contact with the inner wall of the rotating groove.

[0028] In this technical solution, the rubber column is provided to ensure that the worm will not be affected and rotate when there is no staff rotating it.

[0029] In the above technical solution, further, two guide columns are fixedly installed in the sliding groove, and the two guide columns are respectively located on both sides of the threaded rod one. The upper ends of the two guide columns pass through the sliding plate, and the two guide columns are slidably connected to the sliding plate.

[0030] In this technical solution, the sliding plate slides on two guide posts to ensure the sliding stability of the sliding plate.

[0031] The beneficial effects of the utility model are:

[0032] 1. When rectangular items need to be packaged, this stretch film packaging machine uses a fixed component to insert the fixed block into the corresponding sliding rod. The fixed component can fix the position of the fixed block. The staff only needs to install the two clamping plates with the farthest distance to clamp and fix the rectangular items. It is convenient to adjust according to the shape of the clamped items. The operation is quick and easy, and no tools are required.

[0033] 2. The stretch film stretch packaging machine starts motor 1, which is powered on and drives the turntable to rotate. The turntable drives the items to rotate, and the stretch film can be automatically covered on the items. At the same time, start motor 2, which is powered on and drives threaded rod 1 to rotate. Under the action of the thread, threaded rod 1 moves the sliding plate downward, and the sliding plate drives the items downward through the turntable. This operation can automatically package higher items. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0035] Figure 2 This is a schematic diagram of the cross-sectional structure of the base of the utility model;

[0036] Figure 3 This is a schematic diagram of the cross-sectional structure of the sliding plate of the present utility model;

[0037] Figure 4 This is one of the schematic cross-sectional structures of the turntable of the present utility model;

[0038] Figure 5 This is the second schematic diagram of the cross-sectional structure of the turntable of the present utility model;

[0039] Figure 6 This is a schematic diagram of the sliding rod area structure of the utility model;

[0040] Figure 7 This is one of the schematic cross-sectional structures of the sliding rod of the present invention;

[0041] Figure 8 This is the second schematic diagram of the cross-sectional structure of the sliding rod of the present invention;

[0042] Figure 9 It is a schematic diagram of the cross-sectional structure of the clamping plate of the present utility model.

[0043] The marks in the figure are:

[0044] 1. Base; 2. Raw material roller; 3. Sliding groove; 4. Sliding plate; 5. Motor 1; 6. Turntable; 7. Rotating groove; 8. Sliding rod; 9. Limiting groove; 10. Fixed block; 11. Clamping plate; 12. Motor 2; 13. Threaded rod 1; 14. Bevel gear 1; 15. Bevel gear 2; 16. Threaded rod 2; 17. Worm gear; 18. Worm; 19. Limiting block; 20. Spring; 21. Disc; 22. Bevel gear 3; 23. Bevel gear 4; 24. Operating lever; 25. Operating disk; 26. Rubber column; 27. Guide column. DETAILED DESCRIPTION

[0045] The following will be combined with the accompanying drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field fall within the scope of protection of this application.

[0046] In the description of this application, it should be noted that the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn according to the actual proportional relationship. Technologies, methods and equipment known to ordinary technicians in the relevant fields may not be discussed in detail, but where appropriate, the technologies, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific values should be interpreted as merely exemplary and not as limitations. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, so once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0047] It should be noted that the terms "first," "second," etc. in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way are interchangeable where appropriate, so that the embodiments of this application can be implemented in an order other than those illustrated or described herein, and that the objects distinguished by "first," "second," etc. are generally of the same type, and do not limit the number of objects. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0048] It should be noted that, in the description of this application, the directions or positional relationships indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise specified, these directional terms do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of this application; the directional terms "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0049] It should be noted that, in the present application, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the opposite order according to the functions involved. For example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0050] Example 1:

[0051] See also Figure 1 - Figure 9 As shown, this embodiment provides a stretch film packaging machine, comprising:

[0052] A base 1, a raw material roller 2 is fixedly installed on the top of the base 1, a sliding groove 3 is opened in the base 1, a sliding plate 4 is slidably installed in the sliding groove 3, a motor 2 12 is fixedly installed in the sliding groove 3 and below the sliding plate 4, a threaded rod 13 is fixedly installed on the output shaft of the motor 2 12, the upper end of the threaded rod 13 passes through the sliding plate 4, and the threaded rod 13 is threadedly connected to the sliding plate 4, a motor 1 5 is fixedly installed in the sliding plate 4, and the output shaft of the motor 1 5 passes through the sliding plate 4 and extends to the outside and is fixedly installed with a turntable 6;

[0053] A rotation groove 7 is provided in the turntable 6, and a plurality of sliding rods 8 are slidably installed in the rotation groove 7. A limit groove 9 is provided in each of the sliding rods 8. A fixed block 10 is inserted and installed in the limit groove 9. The upper end of the fixed block 10 passes through the limit groove 9 and extends to the outside and is fixedly installed with a clamping plate 11;

[0054] A driving assembly is located in the turntable 6 and is used to drive the plurality of sliding rods 8 to slide;

[0055] Several fixing components are respectively located in the several sliding rods 8 and are used to fix the positions of the several fixing blocks 10 respectively.

[0056] When rectangular items need to be packaged, the fixing block 10 is inserted into the corresponding sliding rod 8 through the provided fixing assembly. The position of the fixing block 10 can be fixed by the provided fixing assembly. The staff only needs to install the two clamping plates 11 that are farthest apart to clamp and fix the rectangular items. It is convenient to adjust according to the shape of the clamped items. The operation is convenient and quick, and no tools are required.

[0057] When the items need to be packaged, the items are first placed on the top of the turntable 6. The driving assembly can drive the sliding rods 8 to slide and move closer to each other. The sliding rods 8 respectively drive the clamping plates 11 to slide and move closer to each other. The clamping plates 11 can fix the round items.

[0058] Then, the stretch film is covered on the article, and then the motor 1 5 is started. The motor 1 5 is powered on and drives the turntable 6 to rotate. The turntable 6 drives the article to rotate, and the stretch film can be automatically covered on the article. At the same time, the motor 2 12 is started. The motor 2 12 is powered on and drives the threaded rod 13 to rotate. Under the action of the thread, the threaded rod 13 leads the sliding plate 4 to move downward. The sliding plate 4 drives the article to move downward through the turntable 6. This operation can automatically package higher articles.

[0059] In this embodiment, the driving component includes:

[0060] Bevel gear 14 is rotatably mounted in the rotating groove 7 and located between the plurality of sliding rods 8. A plurality of bevel gears 15 are meshedly mounted on the top of the bevel gear 14. A threaded rod 16 is fixedly mounted on one end of each of the plurality of bevel gears 15 that are away from each other. The plurality of threaded rods 16 are respectively located on the side of the plurality of sliding rods 8 that are close to each other, and the ends of the plurality of threaded rods 16 that are away from each other respectively penetrate the plurality of sliding rods 8. The plurality of threaded rods 16 are respectively threadedly connected to the plurality of sliding rods 8.

[0061] The worm wheel 17 is fixedly mounted on the bottom of the bevel gear 14. A worm 18 is meshedly mounted on one side of the worm wheel 17. One end of the worm 18 passes through the rotation groove 7 and extends to the outside. The plurality of bevel gears 15, the plurality of threaded rods 16, the worm wheel 17 and the worm 18 are all rotatably connected to the rotation groove 7.

[0062] Among them, the stretch film is then covered on the article, and then the motor 1 5 is started. The motor 1 5 is powered on and drives the turntable 6 to rotate, and the turntable 6 drives the article to rotate, which can automatically cover the stretch film on the article. At the same time, the motor 2 12 is started, and the motor 2 12 is powered on and drives the threaded rod 13 to rotate. Under the action of the thread, the threaded rod 13 leads the sliding plate 4 to move downward, and the sliding plate 4 drives the article to move downward through the turntable 6. This operation can automatically package higher articles.

[0063] In this embodiment, the fixing component includes:

[0064] Two limit blocks 19, both limit blocks 19 are slidably installed in the limit groove 9, and the two limit blocks 19 are respectively located on both sides of the fixed block 10, the sides of the two limit blocks 19 close to each other extend into the fixed block 10, and the two limit blocks 19 are plugged into the fixed block 10, and the sides of the two limit blocks 19 away from each other are fixedly installed with a plurality of springs 20 fixed to the inner wall of the limit groove 9;

[0065] The disc 21 is rotatably mounted in the limiting groove 9 and is located between the two limiting blocks 19. The circumferential side walls of the disc 21 are in contact with the two limiting blocks 19. A bevel gear 3 22 is fixedly mounted on one side of the disc 21. A bevel gear 4 23 is meshed with the top of the bevel gear 3 22. The upper end of the bevel gear 4 23 passes through the limiting groove 9 and extends to the outside. The bevel gear 3 22 and the bevel gear 4 23 are both rotatably connected to the limiting groove 9.

[0066] Among them, when it is necessary to package rectangular items, first rotate the bevel gear four 23, and the bevel gear four 23 drives the bevel gear three 22 engaged with it to rotate, and the bevel gear three 22 drives the disc 21 to rotate. The rotation of the disc 21 will squeeze the two limit blocks 19 to slide and move away from each other. At the same time, several springs 20 are squeezed and contracted, and then the fixed block 10 is inserted into the corresponding sliding rod 8, and then the bevel gear four 23 is released. Under the action of the rebound force of several springs 20, the two limit blocks 19 slide and approach each other. Both limit blocks 19 are inserted into the fixed block 10, and the position of the fixed block 10 can be fixed. The staff only needs to install the two clamping plates 11 with the farthest distance to clamp and fix the rectangular items, which is convenient for adjustment according to the shape of the clamped items. The operation is convenient and quick, and no tools are required.

[0067] Example 2:

[0068] This embodiment provides a wrapping film stretch packaging machine, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0069] In this embodiment, the cross section of the disk 21 is elliptical.

[0070] The rotation of the disc 21 can squeeze the two limiting blocks 19 to slide and move away from each other.

[0071] Example 3:

[0072] This embodiment provides a wrapping film stretch packaging machine, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0073] In this embodiment, an operating rod 24 is fixedly mounted on the top of the bevel gear 23, and an operating disk 25 is fixedly mounted on one end of the worm 18.

[0074] Among them, the operating lever 24 is provided to facilitate the rotation of the bevel gear 23, and the operating disk 25 is provided to facilitate the rotation of the worm 18.

[0075] Example 4:

[0076] This embodiment provides a wrapping film stretch packaging machine, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0077] In this embodiment, a rubber column 26 is fixedly mounted on the worm 18 , and the rubber column 26 is in close contact with the inner wall of the rotating groove 7 .

[0078] The rubber column 26 is provided to ensure that the worm 18 will not be affected and rotated when there is no worker rotating it.

[0079] Example 5:

[0080] This embodiment provides a wrapping film stretch packaging machine, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0081] In this embodiment, two guide columns 27 are fixedly installed in the sliding groove 3. The two guide columns 27 are respectively located on both sides of the threaded rod 13. The upper ends of the two guide columns 27 pass through the sliding plate 4, and the two guide columns 27 are both slidably connected to the sliding plate 4.

[0082] The sliding plate 4 slides on the two guide posts 27 to ensure the sliding stability of the sliding plate 4 .

[0083] Working principle: When it is necessary to package rectangular items, first rotate the operating rod 24 and drive the bevel gear four 23 to rotate, the bevel gear four 23 drives the bevel gear three 22 engaged with it to rotate, and the bevel gear three 22 drives the disc 21 to rotate. The rotation of the disc 21 will squeeze the two limit blocks 19 to slide and move away from each other. At the same time, a number of springs 20 are squeezed and contracted, and then the fixed block 10 is inserted into the corresponding sliding rod 8. Then, release the operating rod 24. Under the action of the rebound force of the several springs 20, the two limit blocks 19 slide and move closer to each other. Both limit blocks 19 are inserted into the fixed block 10, which can fix the position of the fixed block 10. The staff only needs to install the two clamping plates 11 with the farthest distance between them to clamp and fix the rectangular items, which is convenient for adjustment according to the shape of the clamped items. The operation is convenient and quick, and no tools are required.

[0084] When it is necessary to package items, the items are first placed on the top of the turntable 6, and then the operating disk 25 is rotated to drive the worm 18 to rotate, the worm 18 drives the worm gear 17 engaged therewith to rotate, the worm gear 17 drives the bevel gear 14 to rotate, the bevel gear 14 drives the several bevel gears 2 15 engaged therewith to rotate, and the several bevel gears 2 15 respectively drive the several threaded rods 2 16 to rotate. Under the action of the threads, the several threaded rods 2 16 respectively drive the several sliding rods 8 to slide and approach each other, and the several sliding rods 8 respectively drive the several clamping plates 11 to slide and approach each other, and the several clamping plates 11 can fix round items;

[0085] Then, the stretch film is covered on the article, and then the motor 15 is started. The motor 15 is powered on and drives the turntable 6 to rotate. The turntable 6 drives the article to rotate, and the stretch film can be automatically covered on the article. At the same time, the motor 2 12 is started. The motor 2 12 is powered on and drives the threaded rod 13 to rotate. Under the action of the thread, the threaded rod 13 leads the sliding plate 4 to move downward. At the same time, the sliding plate 4 slides on the two guide pillars 27 to ensure the sliding stability of the sliding plate 4. The sliding plate 4 drives the article to move downward through the turntable 6. This operation can automatically package higher articles.

[0086] The embodiments of the present application are described above in conjunction with the accompanying drawings. Unless there is a conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms without departing from the purpose of this application and the scope of protection of the claims, all of which are within the protection of this application.

Claims

1. A stretch film packaging machine, characterized in that: include: A base (1), a raw material roller (2) is fixedly installed on the top of the base (1), a sliding groove (3) is opened in the base (1), a sliding plate (4) is slidably installed in the sliding groove (3), a motor 2 (12) is fixedly installed in the sliding groove (3) and below the sliding plate (4), a threaded rod 1 (13) is fixedly installed on the output shaft of the motor 2 (12), the upper end of the threaded rod 1 (13) passes through the sliding plate (4), and the threaded rod 1 (13) is threadedly connected to the sliding plate (4), a motor 1 (5) is fixedly installed in the sliding plate (4), the output shaft of the motor 1 (5) passes through the sliding plate (4) and extends to the outside and is fixedly installed with a turntable (6); A rotation groove (7), wherein the rotation groove (7) is provided in the turntable (6), a plurality of sliding rods (8) are slidably installed in the rotation groove (7), a plurality of sliding rods (8) are provided in each of the sliding rods (8), a fixed block (10) is inserted and installed in the limited groove (9), and the upper end of the fixed block (10) passes through the limited groove (9) and extends to the outside and is fixedly installed with a clamping plate (11); A driving assembly, the driving assembly being located in the turntable (6) and being used for driving a plurality of sliding rods (8) to slide; A plurality of fixing assemblies are respectively located in a plurality of sliding rods (8) and are respectively used to fix the positions of a plurality of fixing blocks (10).

2. A stretch wrapping machine according to claim 1, characterized in that: The drive assembly includes: Bevel gear one (14), the bevel gear one (14) is rotatably mounted in the rotation groove (7) and is located between the plurality of sliding rods (8), the top of the bevel gear one (14) is meshed with a plurality of bevel gear twos (15), the ends of the plurality of bevel gear twos (15) that are away from each other are fixedly mounted with threaded rod twos (16), the plurality of threaded rod twos (16) are respectively located on the side of the plurality of sliding rods (8) that are close to each other, and the ends of the plurality of threaded rod twos (16) that are away from each other respectively penetrate the plurality of sliding rods (8), and the plurality of threaded rod twos (16) are respectively threadedly connected to the plurality of sliding rods (8); A worm wheel (17) is fixedly mounted on the bottom of the bevel gear (14). A worm (18) is meshedly mounted on one side of the worm wheel (17). One end of the worm (18) passes through the rotation groove (7) and extends to the outside. The plurality of bevel gears (15), the plurality of threaded rods (16), the worm wheel (17) and the worm (18) are all rotationally connected to the rotation groove (7).

3. The stretch wrapping machine according to claim 2, characterized in that: The fixing assembly includes: Two limit blocks (19), both of which are slidably mounted in the limit groove (9), and the two limit blocks (19) are respectively located on both sides of the fixed block (10), the sides of the two limit blocks (19) close to each other extend into the fixed block (10), and the two limit blocks (19) are plugged into the fixed block (10), and the sides of the two limit blocks (19) away from each other are fixedly mounted with a plurality of springs (20) fixed to the inner wall of the limit groove (9); A disc (21) is rotatably mounted in a limiting groove (9) and located between two limiting blocks (19). The circumferential side walls of the disc (21) are in contact with the two limiting blocks (19). A bevel gear three (22) is fixedly mounted on one side of the disc (21). A bevel gear four (23) is meshedly mounted on the top of the bevel gear three (22). The upper end of the bevel gear four (23) passes through the limiting groove (9) and extends to the outside. The bevel gear three (22) and the bevel gear four (23) are both rotatably connected to the limiting groove (9).

4. The stretch wrapping machine according to claim 3, characterized in that: The cross section of the disc (21) is elliptical.

5. The stretch wrapping machine according to claim 3, characterized in that: An operating rod (24) is fixedly mounted on the top end of the bevel gear (23), and an operating disk (25) is fixedly mounted on one end of the worm (18).

6. The stretch wrapping machine according to claim 2, characterized in that: A rubber column (26) is fixedly mounted on the worm (18), and the rubber column (26) is in close contact with the inner wall of the rotating groove (7).

7. The stretch wrapping machine according to claim 1, characterized in that: Two guide columns (27) are fixedly installed in the sliding groove (3), and the two guide columns (27) are respectively located on both sides of the threaded rod (13). The upper ends of the two guide columns (27) pass through the sliding plate (4), and the two guide columns (27) are slidably connected to the sliding plate (4).

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