Guide roller mechanism for transverse stretching and pre-cutting of thin film production line

Abstract

The utility model discloses a transverse stretching and pre-cutting guide roller mechanism for a thin film production line, and belongs to the technical field of thin film production. The stretching device mainly comprises a stretching assembly which comprises a supporting frame. The discharging assembly comprises a bottom plate, two sets of supports are installed on the bottom plate, and a certain distance is formed between the two sets of supports; mounting grooves are formed in the support in a penetrating mode, a material roller is placed between the two mounting grooves, roller shafts are arranged at the two ends of the material roller, and containing grooves matched with the roller shafts are formed in the bottom faces of the inner walls of the mounting grooves. Roller shafts at the two ends of the material roller are sleeved with fixing sleeves, annular grooves are formed in the fixing sleeves, the support is in threaded connection with two sets of screws, one ends of the two sets of screws are in bearing connection with pressing blocks, and annular protruding parts matched with the grooves are installed on the pressing blocks. According to the guide roller mechanism for transverse stretching and pre-cutting of the thin film production line, it is guaranteed that the material roller is stably placed and discharged through the discharging assembly, disengaging is avoided, and rotation is stable.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of film production, in particular to a guide roller mechanism for transverse pulling and pre-cutting of a film production line. BACKGROUND

[0002] A film is a thin and flat material with a wide range of applications. In the packaging industry, it can be used to protect goods and extend shelf life, such as food packaging film. In the film production process, the transverse pulling and pre-cutting link of the film production line is crucial. The main role of this link is to pre-cut the film after the transverse stretching process to meet the needs of subsequent processing or product specifications. The performance of the guide roller mechanism, as one of the core components of this link, directly affects the quality and efficiency of film production.

[0003] For example, the patent with the publication number CN217807786U discloses a film transverse pulling and pre-cutting guide roller mechanism, which includes a film transverse pulling machine, a left position adjusting device, a right position adjusting device, an upper guide roller, a lower guide roller, a support rod, and a film roll. This mechanism can effectively solve the problem of not being able to move and adjust the guide roller during use, and it is convenient to clamp the material roll.

[0004] The above-mentioned film transverse pulling and pre-cutting guide roller mechanism has the problem that the material roller is placed on the inclined grooves of the two support rods, which may not be stable enough during the film transverse pulling process. When the film is subjected to a large pulling force, the material roller may slide or shake in the inclined grooves, affecting the delivery and cutting quality of the film. Therefore, it is necessary to provide a guide roller mechanism for transverse pulling and pre-cutting of a film production line to solve the above-mentioned problems.

[0005] It should be noted that the above information disclosed in this background section is only used to understand the background technology of the present application, and therefore, it can contain information that does not constitute prior art. SUMMARY

[0006] Based on the above-mentioned problems in the prior art, the present application aims to provide a guide roller mechanism for transverse pulling and pre-cutting of a film production line, which solves the problem of instability of the material roller placed on the inclined grooves of the two support rods during the film transverse pulling process.

[0007] The technical scheme adopted by the present application to solve its technical problems is: the guide roller mechanism of the film production line transverse tension pre-cutting, including a stretching assembly, the stretching assembly includes a support frame, the support frame is provided with a film transverse tension machine; a feeding assembly is installed on the support frame, the feeding assembly includes a bottom plate installed on the support frame, two groups of supports are installed on the bottom plate, and a certain distance is provided between the two groups of supports; the support is provided with an installation slot, and a material roller is placed between the two installation slots; the material roller has a roller shaft at both ends, and a placement slot adapted to the roller shaft is formed in the inner wall bottom surface of the installation slot; a fixing sleeve is sleeved on the roller shaft at both ends of the material roller, a ring-shaped groove is formed in the fixing sleeve, two groups of screw rods are threadedly connected to the support, a pressing block is connected to one end of the two groups of screw rods through a bearing, and a groove-adapted annular protrusion is installed on the pressing block.

[0008] Further, the two sides of the pressing block are provided with limiting shafts, the two sides of the support are provided with waist grooves matched with the diameters of the limiting shafts, the two sides of the limiting shafts are provided with limiting blocks, and side grooves matched with the limiting blocks are formed in the waist grooves.

[0009] Further, the support frame is provided with a bottom plate, an opening groove is formed in the bottom plate, a lead screw is connected to the inner wall of the opening groove through a bearing, a motor is embeddedly installed on the bottom plate, the output end of the motor is fixedly connected with the lead screw, the lead screw has two groups of screw grooves with opposite rotation directions, and two groups of sliding blocks are threadedly connected to the two groups of screw grooves, respectively.

[0010] Further, two groups of guide rods are installed between the inner walls of the opening grooves, the guide rods are located on the two sides of the lead screw, and the sliding blocks are movably sleeved on the two groups of guide rods.

[0011] Further, a fixed plate is installed on the sliding block, a movable sleeve ring is installed on the fixed plate, a fixed ring sleeve is installed on one side of the two groups of supports close to each other, the inner wall diameter of the fixed ring sleeve is greater than the diameter of the material roller, two groups of limiting rods are installed on the movable sleeve ring, and the limiting rods are movably penetrated in the fixed ring sleeve.

[0012] Further, the film transverse tension machine has a shell, tension adjusting assemblies are installed on the inner walls of the shell, the tension adjusting assemblies include fixed shafts installed on the inner walls of the shell, air cylinders are movably installed on the fixed shafts, movable rods are movably installed on the lower end positions of the fixed shafts, the extension end of the air cylinder is movably connected with the middle position of the movable rod, a compression roller is installed between the two groups of movable rods, and the compression roller is provided with two groups of limiting rings.

[0013] The beneficial effects of the present application are: the film production line transverse pulling pre-cut guide roller mechanism provided by the present application realizes cooperation of the annular protruding part on the pressing block and the annular groove of the fixed sleeve, effectively limits the axial movement of the material roller, avoids the material roller from being pulled out of the installation position during the material feeding process, and ensures the continuity and stability of the film feeding process.

[0014] In addition to the purposes, features and advantages described above, the present application has other purposes, features and advantages. The present application will be further described below with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0015] The drawings accompanying the specification of the present application form a part thereof, serve to provide further understanding of the present application, and together with the description of the exemplary embodiments of the present application and the explanation thereof serve to explain the present application, and do not constitute improper limitations on the present application.

[0016] In the drawings:

[0017] Figure 1 It is the overall schematic diagram of the film production line transverse pulling pre-cut guide roller mechanism in the present application;

[0018] Figure 2 It is the partial structure schematic diagram of Figure 1 ;

[0019] Figure 3 It is the tension adjusting assembly structure schematic diagram of Figure 2 ;

[0020] Figure 4 It is the A enlarged view of Figure 2 ;

[0021] In the drawings, various reference signs:

[0022] 1, stretching assembly; 11, support frame; 12, film transverse pulling machine; 13, shell; 14, bottom plate; 15, open slot; 2, tension adjusting assembly; 21, fixed shaft; 22, air cylinder; 23, movable rod; 24, compression roller; 25, limiting ring; 3, material feeding assembly; 31, support; 32, installation slot; 33, material roller; 34, pressing block; 35, limiting shaft; 36, screw rod; 37, waist groove; 38, side opening groove; 39, lead screw; 310, guide rod; 311, motor; 312, sliding block; 313, fixed ring sleeve; 314, fixed plate; 315, movable sleeve ring; 316, limiting rod; 317, fixed sleeve. DETAILED DESCRIPTION

[0023] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0024] In order to enable the personnel in the technical field to better understand the scheme of the present application, the technical scheme in the embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by the person of ordinary skill in the art without creative labor should belong to the protection scope of the present application.

[0025] As shown in Figures 1-4 The present application provides a film production line transverse pulling pre-cut guide roller mechanism, which comprises a stretching assembly 1, the stretching assembly 1 comprises a support frame 11, and a film transverse pulling machine 12 is fixedly installed on the support frame 11, the film transverse pulling machine 12 has a shell 13, and a tension adjusting assembly 2 is installed on both sides of the inner wall of the shell 13, the tension adjusting assembly 2 is used for tensioning the film entering the film transverse pulling machine 12;

[0026] The tension adjusting assembly 2 comprises a fixed shaft 21 fixedly installed on both sides of the inner wall of the shell 13, a pneumatic cylinder 22 movably installed on the fixed shaft 21, and an active rod 23 movably installed on the inner wall of the shell 13 at the lower end position of the fixed shaft 21, the telescopic end of the pneumatic cylinder 22 is movably connected with the middle position of the active rod 23, a compression roller 24 is fixedly installed between the two active rods 23, and two limiting rings 25 are arranged on the compression roller 24, the limiting rings 25 are used for limiting the transverse position of the film on the compression roller 24, preventing the film from shifting left and right during conveying, and ensuring that the film is always in a suitable position for tension adjustment and subsequent stretching operation;

[0027] When the pneumatic cylinder 22 starts to work, the telescopic action of the pneumatic cylinder 22 pushes the active rod 23 to swing around the movable connection point of the active rod 23 with the inner wall of the shell 13, the active rod 23 drives the compression roller 24 to move, since the compression roller 24 is fixedly installed between the two active rods 23, the swinging of the active rod 23 drives the compression roller 24 to move up and down. When the pneumatic cylinder 22 is extended, the active rod 23 swings downward, and the compression roller 24 moves downward, thereby increasing the pressure on the film; when the pneumatic cylinder 22 is retracted, the active rod 23 swings upward, and the compression roller 24 moves upward, thereby reducing the pressure on the film;

[0028] A material discharging assembly 3 is installed on the support frame 11, the material discharging assembly 3 comprises a bottom plate 14 fixedly installed on the support frame 11, two supports 31 fixedly installed on the bottom plate 14, a certain distance between the two supports 31, an installation slot 32 through the support 31, and a material roller 33 placed between the two installation slots 32, the material roller 33 has roller shafts at both ends, and a placement slot (not marked in the figure) adapted to the roller shaft is formed in the inner wall bottom surface of the installation slot 32, and the material roller 33 is wound with a film;

[0029] It should be noted that the roller shafts at both ends of the material roller 33 are sleeved with fixing sleeves 317, annular grooves are formed in the fixing sleeves 317, two groups of screw rods 36 are threadedly connected to the support 31, and pressure blocks 34 are bearing-connected to one ends of the two groups of screw rods 36, the two groups of screw rods 36 are adapted to rotate to push the pressure blocks 34 to approach or move away from the fixing sleeves 317, and annular protrusions (not shown in the figure) that are adapted to the grooves are fixedly installed on a side of the pressure blocks 34 that approaches the fixing sleeves 317, the annular protrusions are adapted to limit the fixing sleeves 317 to avoid the material roller 33 from being pulled out from between the pressure blocks 34 and the placing grooves;

[0030] And limiting shafts 35 are fixedly installed on both sides of the pressure blocks 34, waist grooves 37 that are adapted in diameter to the limiting shafts 35 are formed in both sides of the support 31, limiting blocks (not shown in the figure) are fixedly installed on both sides of the limiting shafts 35, and side grooves 38 that are adapted to the limiting blocks are formed in the waist grooves 37, the side grooves 38 are adapted to limit the limiting shafts 35 to indirectly avoid the pressure blocks 34 from being pulled out from the installation grooves 32;

[0031] Therefore, when installing, the material roller 33 with the film wound thereon is placed in the installation grooves 32 of the two groups of supports 31 through the roller shafts at both ends thereof, the roller shafts fall into the placing grooves in the inner wall bottom surfaces of the installation grooves 32 to realize preliminary positioning of the material roller 33, annular grooves are formed in the fixing sleeves 317 to cooperate with the annular protrusions on the pressure blocks 34, and then the screw rods 36 are rotated, the screw rods 36 are axially moved, and the pressure blocks 34 are pushed to approach or move away from the fixing sleeves 317.

[0032] When the pressure blocks 34 approach the fixing sleeves 317, the annular protrusions on the pressure blocks 34 are embedded in the annular grooves of the fixing sleeves 317 to limit the fixing sleeves 317, thereby preventing the material roller 33 from being pulled out from between the pressure blocks 34 and the placing grooves, when the screw rods 36 push the pressure blocks 34 to move, the sliding of the limiting shafts 35 in the waist grooves 37 plays a guiding role to ensure that the pressure blocks 34 move stably, and the side grooves 38 limit the limiting blocks to indirectly avoid the pressure blocks 34 from being pulled out from the installation grooves 32, thereby further enhancing the stability of the entire material placing assembly 3;

[0033] Through cooperation of the annular protrusions on the pressure blocks 34 and the annular grooves of the fixing sleeves 317, axial movement of the material roller 33 is effectively limited, the material roller 33 is prevented from being pulled out from the installation position during the material placing process, and the continuity and stability of the film placing process are ensured; the roller shafts at both ends of the material roller 33 are placed in the placing grooves, and the limiting effect of the pressure blocks 34 makes the material roller 33 stably rotate, thereby uniformly releasing the film, which is conducive to smooth implementation of the subsequent film production line transverse pulling and pre-cutting process;

[0034] And the support frame 11 is fixedly installed with a bottom plate 14, and the bottom plate 14 is provided with an open slot 15, and a lead screw 39 is connected between the inner walls of the open slot 15 in a bearing mode, and a motor 311 is embeddedly installed on the bottom plate 14, and the output end of the motor 311 is fixedly connected with the lead screw 39, and the lead screw 39 is adapted to rotate with the output end of the motor 311;

[0035] The lead screw 39 is provided with two groups of thread grooves with opposite screw directions (not shown in the figure), and the two groups of thread grooves are respectively threadedly connected with two groups of sliding blocks 312, and the two groups of guide rods 310 are fixedly installed between the inner walls of the open slot 15, and the guide rods 310 are located on the two sides of the lead screw 39, and the sliding blocks 312 are movably sleeved on the two groups of guide rods 310;

[0036] When the motor 311 is powered on and started, the output shaft of the motor 311 starts to rotate and drives the lead screw 39 to synchronously rotate around its own axis, and when the lead screw 39 rotates, the sliding blocks 312 matched with the thread grooves will produce displacement along the axial direction of the lead screw 39 according to the thread transmission principle, and since the two groups of thread grooves have opposite screw directions, the sliding blocks 312 respectively threadedly connected with the two groups of thread grooves will simultaneously realize mutual approaching or moving away from each other when the lead screw 39 rotates;

[0037] And the sliding block 312 is fixedly installed with a fixed plate 314, and the fixed plate 314 is fixedly installed with a movable sleeve ring 315, and the movable sleeve ring 315 is adapted to be wound on the material roller 33, and the movable sleeve ring 315 is adapted to be movably sleeved on the material roller 33, and the two groups of supports 31 are fixedly installed with a fixed ring sleeve 313 on one side close to each other, and the inner wall diameter of the fixed ring sleeve 313 is greater than the diameter of the material roller 33, and the movable sleeve ring 315 is fixedly installed with two groups of limiting rods 316, and the limiting rods 316 are movably penetrated through the fixed ring sleeve 313;

[0038] In use, the material roller 33 wound with the film is placed in the fixed ring sleeve 313 of the two groups of supports 31, and the inner wall diameter of the fixed ring sleeve 313 is greater than the diameter of the material roller 33, so that the material roller 33 can be preliminarily positioned and provided with a certain movement space. At this time, the movable sleeve ring 315 is movably sleeved on the material roller 33, and the fixed plate 314 and the movable sleeve ring 315 are moved by the movement of the sliding block 312. When the movable sleeve ring 315 is moved to a suitable position, the film on the material roller 33 can be preliminarily positioned and constrained.

[0039] In the film production process, if the position of the material roller 33 or the restraint state of the film needs to be adjusted according to the stretching of the film, the tension change and other factors, only the motor 311 needs to be started, the screw rod 39 rotates to make the sliding block 312 drive the movable collar 315 to move again. The change of the position of the movable collar 315 on the material roller 33 can dynamically adapt to the production requirements of the film, for example, when the film is loose or too tight, the degree of restraint of the movable collar 315 on the film is adjusted, the whole process is simple to operate and can quickly respond to changes in production.

[0040] The limiting rod 316 plays a guiding role in the movement of the movable collar 315 on the one hand, ensures that the movable collar 315 always maintains coaxial with the material roller 33 during movement and will not deviate or shake; on the other hand, the limiting rod 316 cooperates with the fixed ring sleeve 313 to limit the movement range of the movable collar 315, so that it can fix and adjust the material roller 33 and the film within a reasonable range, avoid excessive movement of the movable collar 315 and deviate from the working position, further ensure the stability and reliability of the whole mechanism operation, and also simplify the structure;

[0041] In summary: the material feeding assembly 3 is responsible for providing the film source, placing the material roller 33 wound with the film into the installation slot 32 of the two groups of supports 31, the roller shaft falls into the placement slot for preliminary positioning, rotating the screw rod 36 to push the pressing block 34, using the annular protruding part to cooperate with the annular groove of the fixed sleeve 317 to prevent the material roller 33 from being axially pulled out, and the cooperation of the limiting shaft 35 with the waist groove 37 and the side slot 38 ensures the stable work of the pressing block 34 and ensures the stable rotation of the material roller 33 for feeding;

[0042] At the same time, the screw rod 39 is driven to rotate by the motor 311, the screw rod 39 with opposite threads on it drives the two groups of sliding blocks 312 to move closer or farther away from each other, and then the fixed plate 314 and the movable collar 315 on the sliding block 312 move to preliminarily position and restrain the material roller 33 and the film;

[0043] And the position can be dynamically adjusted according to the production requirements, and the limiting rod 316 ensures the stable movement of the movable collar 315 and limits its range. After the film enters the film transverse drawing machine 12, the tension adjusting assembly 2 starts to work, the extension and contraction of the air cylinder 22 drives the movable rod 23 to swing, drives the pressing roller 24 to move up and down, realizes the tension adjustment of the film, and the limiting ring 25 on the pressing roller 24 prevents the film from deviating laterally.

[0044] From the working effect, the material feeding assembly 3 ensures the stable placement and feeding of the material roller 33, avoids pulling out and rotates stably; the movable collar 315 cooperates with the adjusting mechanism of the sliding block 312, which is simple to operate and responds quickly, and can adapt to the dynamic changes in film production; the tension adjusting assembly 2 accurately controls the film tension to ensure the quality of the film during the transverse drawing process and prevent problems such as rupture and wrinkles.

[0045] The above descriptions are only the preferred embodiments of the present application, and are not intended to limit the present application. The present application can have various modifications and changes for those skilled in the art. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A film line cross draw pre-cut guide roller mechanism characterized by: Include: Stretching assembly (1), the stretching assembly (1) includes support frame (11), the film transverse tension machine (12) is installed on the support frame (11); Discharge assembly (3), the discharge assembly (3) is installed on the support frame (11), the discharge assembly (3) includes: Bottom plate (14), the bottom plate (14) is installed on the support frame (11), two groups of supports (31) are installed on the bottom plate (14), and a certain distance is provided between the two groups of supports (31); The installation slot (32) is throughly provided on the support (31), the material roller (33) is placed between the two groups of installation slots (32), the roller shaft is provided at both ends of the material roller (33), and the placement groove adapted to the roller shaft is formed in the inner wall bottom surface of the installation slot (32); The fixed sleeve (317) is sleeved on the roller shaft at both ends of the material roller (33), the annular groove is formed in the fixed sleeve (317), two groups of screw rods (36) are screw-connected on the support (31), the pressure holding block (34) is connected to one end of the two groups of screw rods (36) through a bearing, and the annular protruding part matched with the groove is installed on the pressure holding block (34).

2. The film line cross-pull pre-cut guide roller mechanism of claim 1, wherein: The limiting shaft (35) is installed on both sides of the pressure holding block (34), the waist groove (37) matched with the diameter of the limiting shaft (35) is formed in both sides of the support (31), the limiting block is installed on both sides of the limiting shaft (35), and the side opening groove (38) matched with the limiting block is formed in the waist groove (37).

3. The film line cross-pull pre-cut guide roller mechanism of claim 1, wherein: The bottom plate (14) is installed on the support frame (11), the opening groove (15) is formed in the bottom plate (14), the lead screw (39) is connected to the inner wall of the opening groove (15) through a bearing, the motor (311) is embeddedly installed on the bottom plate (14), the output end of the motor (311) is fixedly connected with the lead screw (39), the lead screw (39) has two groups of screw grooves with opposite rotation directions, and two groups of sliding blocks (312) are respectively screw-connected on the two groups of screw grooves.

4. The film line cross-pull pre-cut guide roller mechanism of claim 3, wherein: Two groups of guide rods (310) are installed between the inner walls of the opening groove (15), the guide rods (310) are located on both sides of the lead screw (39), and the sliding blocks (312) are movably sleeved on the two groups of guide rods (310).

5. The film line cross-pull pre-cut guide roller mechanism of claim 4, wherein: The fixed plate (314) is installed on the sliding block (312), the movable sleeve ring (315) is installed on the fixed plate (314), the fixed ring sleeve (313) is installed on one side of the two groups of supports (31) close to each other, the diameter of the inner wall of the fixed ring sleeve (313) is greater than that of the material roller (33), and two groups of limiting rods (316) are installed on the movable sleeve ring (315).

6. The film line cross-pull pre-cut guide roller mechanism of claim 1, wherein: The film transverse drawing machine (12) has a shell (13), the inner wall of which is provided with a tension adjusting assembly (2) on both sides, the tension adjusting assembly (2) comprises a fixed shaft (21) installed on the inner wall of the shell (13) on both sides, a pneumatic cylinder (22) movably installed on the fixed shaft (21), and a movable rod (23) movably installed on the lower end of the fixed shaft (21), the telescopic end of the pneumatic cylinder (22) is movably connected with the middle position of the movable rod (23), and a compression roller (24) is installed between the two groups of movable rods (23), and the compression roller (24) is provided with two groups of limiting rings (25).

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