Stretching equipment suitable for biodegradable film

Abstract

The utility model discloses stretching equipment suitable for a biodegradable film. The stretching equipment comprises a fixed frame, a stretching structure and a transmission mechanism, the stretching structure is installed on the fixing frame and comprises a pair of transmission shafts, pulling idler wheels are fixed to the transmission shafts, a pair of rotating rods are rotationally connected to the fixing frame, and rotating idler wheels are fixed to the rotating rods; the transmission mechanism is installed on one side of the fixing frame and comprises a driving belt wheel, a fixing sleeve is fixed to one end of the rotating rod, a supporting wheel is installed on the fixing sleeve, a baffle is arranged on one side of the supporting wheel, a fixing bolt is installed between the baffle and the rotating rod, and the driving belt wheel and the supporting wheel are sleeved with a synchronous belt. Compared with the prior art, the biodegradable film stretching equipment disclosed by the utility model has the advantages that the rotating speed of the roller is changed by quickly replacing the transmission wheels with different sizes, so that the stretching strength of the stretching equipment on a biodegradable film can be changed, the time required by the stretching equipment for production is reduced, and the production efficiency of the biodegradable film is improved.

Description

Technical Field

[0001] This utility model belongs to the field of stretching equipment technology, specifically relating to stretching equipment suitable for biodegradable membranes. Background Technology

[0002] Biodegradable membranes are plastic films that can be degraded by microorganisms under natural conditions. Based on their degradation mechanisms and forms of degradation, biodegradable membranes can be divided into two types: fully biodegradable membranes and additive-based biodegradable membranes. Fully biodegradable membranes are composed of substances that can be completely decomposed by microorganisms, such as polylactic acid (PLA) and polycaprolactone (PCL). Their final products are CO2 and H2O, which can be absorbed by nature and do not cause secondary pollution to the environment.

[0003] In existing technologies, the production process of biodegradable membranes requires the use of transverse stretching equipment and longitudinal stretching equipment to stretch the biodegradable membrane separately, so that the biodegradable membrane has a specific structure and properties. However, different materials require different stretching ratios, and multiple adjustments need to be made to the stretching equipment according to the requirements so that the stretching equipment can generate appropriate tension. The adjustment time of the stretching equipment is long, which can easily consume a lot of time, affect the production efficiency of biodegradable membranes, and reduce economic benefits.

[0004] Therefore, in response to the above-mentioned technical problems, it is necessary to provide stretching equipment suitable for biodegradable membranes.

[0005] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0006] The purpose of this invention is to provide a stretching device suitable for biodegradable membranes, which can solve the problem that stretching devices are not easy to adjust.

[0007] To achieve the above objectives, a specific embodiment of the present invention provides a stretching device suitable for biodegradable membranes, comprising: a fixing frame, a stretching structure, and a transmission mechanism;

[0008] The tensioning structure is mounted on a fixed frame. The tensioning structure includes a pair of drive shafts, on which pull rollers are fixed. A pair of rotating rods are rotatably connected to the fixed frame, on which rotating rollers are fixed.

[0009] The transmission mechanism is installed on one side of the fixed frame. The transmission mechanism includes a drive pulley, a fixed sleeve is fixed to one end of the rotating rod, a support wheel is installed on the fixed sleeve, a baffle is provided on one side of the support wheel, a fixing bolt is installed between the baffle and the rotating rod, and a synchronous belt is fitted on the drive pulley and the support wheel.

[0010] In one or more embodiments of this utility model, a protective cover is installed on one side of the fixing frame. The protective cover is used to support the motor and can protect the drive pulley, fixing sleeve, support wheel and timing belt. The motor is installed on the protective cover and is fixedly connected to one end of the transmission shaft. The motor is used to control the rotation of the transmission shaft.

[0011] In one or more embodiments of this utility model, a pair of drive shafts and rotating rods are each fixed with meshing drive gears at the ends away from the protective cover. The drive gears enable the drive shafts and rotating rods to drive the other drive shaft and rotating rod to rotate. A fixed cover is provided on one side of the pair of drive gears to protect the drive gears.

[0012] In one or more embodiments of this utility model, a cover plate is hinged to the protective cover, and the cover plate is used to seal the opening on the protective cover.

[0013] In one or more embodiments of this utility model, a plurality of limiting blocks are fixed on the fixing sleeve. The limiting blocks can be supported on the side wall of the limiting groove, thereby driving the support wheel to rotate. The support wheel has a plurality of limiting grooves, and the inside of the limiting grooves is used to place the limiting blocks.

[0014] In one or more embodiments of this utility model, a pair of fixing plates are fixed on the fixing frame. The fixing plates are used to support the threaded rod and enable the threaded rod to rotate on the fixing plates.

[0015] In one or more embodiments of this utility model, a threaded rod is rotatably connected between a pair of fixed plates. The threaded rod can drive a threaded block to move by rotating. A rotating block is fixed to one end of the threaded rod, and rotating the rotating block can drive the threaded rod to rotate.

[0016] In one or more embodiments of this utility model, a pair of threaded blocks are threadedly connected to the threaded rod. The threaded blocks can drive one end of the connecting rod to move, thereby pushing the push plate to move. A connecting rod is hinged to the threaded block, and the connecting rod is used to connect the threaded block and the push plate.

[0017] In one or more embodiments of this utility model, a push plate is hinged to one end of the pair of connecting rods away from the threaded block. The push plate is used to support the support plate and can drive the support plate to move. A pair of support plates are fixed on the push plate and are used to support the fixed rod.

[0018] In one or more embodiments of this utility model, a fixing rod is fixed between a pair of support plates. The fixing rod is used to support the pull roller. The pull roller is rotatably connected to the fixing rod. The pull roller is used to pull the timing belt, so that the timing belt is in a taut state.

[0019] Compared with the prior art, the biodegradable membrane stretching equipment of this invention can change the rotation speed of the rollers by quickly changing the transmission wheels of different sizes, thereby changing the stretching force of the stretching equipment on the biodegradable membrane, reducing the production time required for the stretching equipment, and improving the production efficiency of biodegradable membranes. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a perspective view of a stretching device for biodegradable membranes according to one embodiment of the present invention;

[0022] Figure 2 This is a side cross-sectional view of a stretching device for biodegradable membranes according to one embodiment of the present invention;

[0023] Figure 3 for Figure 2 The structural diagram shown at point A in the middle;

[0024] Figure 4 This is a partial structural cross-sectional view of the transmission mechanism in one embodiment of the present utility model;

[0025] Figure 5 for Figure 4 The structural diagram shown at point B in the middle.

[0026] Explanation of key figure labels:

[0027] 1-Fixed frame, 2-Tension structure, 201-Drive shaft, 202-Pull roller, 203-Rotating rod, 204-Rotating roller, 205-Protective cover, 206-Motor, 207-Transmission gear, 208-Fixed cover, 209-Cover plate, 3-Transmission mechanism, 301-Drive pulley, 302-Fixed sleeve, 303-Support wheel, 304-Baffle, 305-Fixing bolt, 306-Synchronous belt, 307-Limiting block, 308-Fixed plate, 309-Threaded rod, 310-Rotating block, 311-Threaded block, 312-Connecting rod, 313-Push plate, 314-Support plate, 315-Fixed rod, 316-Pull roller. Detailed Implementation

[0028] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0029] like Figures 1 to 5 As shown, a stretching device for biodegradable membranes in one embodiment of the present invention includes: a fixing frame 1, a stretching structure 2, and a transmission mechanism 3.

[0030] like Figures 1 to 4 As shown, the mounting bracket 1 supports the drive shaft 201 and the rotating rod 203. The tensioning structure 2 is mounted on the mounting bracket 1 and includes a pair of drive shafts 201. The drive shafts 201 support the pulling rollers 202 and drive them to rotate. The pulling rollers 202 are fixed to the drive shafts 201, and the pulling rollers 202 control the speed at which the biodegradable membrane enters between the pulling rollers 202 and the rotating rollers 204.

[0031] like Figures 1 to 2 As shown, a pair of rotating rods 203 are rotatably connected to the fixed frame 1. The rotating rods 203 support the rotating rollers 204 and drive the rotating rollers 204 to rotate. The rotating rollers 204 are fixed on the rotating rods 203. The rotating rollers 204 rotate faster than the pulling rollers 202, and the rotating rollers 204 can pull one end of the biodegradable membrane, thereby stretching the biodegradable membrane between the pulling rollers 202 and the rotating rollers 204.

[0032] like Figure 1As shown, a protective cover 205 is installed on one side of the mounting bracket 1. The protective cover 205 supports the motor 206 and protects the drive pulley 301, the fixing sleeve 302, the support wheel 303, and the timing belt 306. The motor 206 is mounted on the protective cover 205 and is fixedly connected to one end of the drive shaft 201. The motor 206 is used to control the rotation of the drive shaft 201.

[0033] like Figures 1 to 2 As shown, a pair of drive shafts 201 and rotating rods 203 are each fixed with meshing drive gears 207 at their ends away from the protective cover 205. The drive gears 207 enable the drive shafts 201 and rotating rods 203 to drive the other drive shaft 201 and rotating rod 203 to rotate. A fixed cover 208 is provided on one side of the pair of drive gears 207 to protect them. A cover plate 209 is hinged to the protective cover 205 to seal any openings in the protective cover 205.

[0034] like Figures 2 to 3 As shown, the transmission mechanism 3 is installed on one side of the fixed frame 1. The transmission mechanism 3 includes a drive pulley 301, which supports the synchronous belt 306. A fixed sleeve 302 is fixed to one end of the rotating rod 203, which supports the support wheel 303. The support wheel 303 is mounted on the fixed sleeve 302, which supports the synchronous belt 306 and can rotate with the synchronous belt 306.

[0035] like Figure 3 As shown, a baffle 304 is provided on one side of the support wheel 303. The baffle 304 is used to block the support wheel 303, making it less likely to fall off. A fixing bolt 305 is installed between the baffle 304 and the rotating rod 203, which can fix the baffle 304 to the rotating rod 203.

[0036] like Figure 4 As shown, a synchronous belt 306 is fitted onto the drive pulley 301 and the support wheel 303. The synchronous belt 306 rotates with the drive pulley 301, thereby driving the fixed sleeve 302, the support wheel 303, and the rotating rod 203 to rotate. Multiple limiting blocks 307 are fixed on the fixed sleeve 302. The limiting blocks 307 are supported on the sidewall of the limiting groove, thereby driving the support wheel 303 to rotate. Multiple limiting grooves are carved into the support wheel 303, and the interior of the limiting grooves is used to place the limiting blocks 307.

[0037] like Figure 4As shown, a pair of fixing plates 308 are fixed on the fixing frame 1. The fixing plates 308 support the threaded rod 309 and allow the threaded rod 309 to rotate on the fixing plates 308. The threaded rod 309 is rotatably connected between the pair of fixing plates 308. The threaded rod 309 can drive the threaded block 311 to move by rotating. A rotating block 310 is fixed to one end of the threaded rod 309. Rotating the rotating block 310 can drive the threaded rod 309 to rotate.

[0038] like Figures 4 to 5 As shown, a pair of threaded blocks 311 are threadedly connected to the threaded rod 309. The threaded blocks 311 can drive one end of the connecting rod 312 to move, thereby pushing the push plate 313 to move. The connecting rod 312 is hinged to the threaded block 311 and is used to connect the threaded block 311 and the push plate 313.

[0039] like Figure 5 As shown, a push plate 313 is hinged to one end of a pair of connecting rods 312 away from the threaded block 311. The push plate 313 supports the support plate 314 and can drive the support plate 314 to move. A pair of support plates 314 are fixed on the push plate 313, and the support plates 314 support the fixed rod 315.

[0040] like Figures 1 to 5 As shown, a fixing rod 315 is fixed between a pair of support plates 314, and the fixing rod 315 is used to support the pull roller 316. The pull roller 316 is rotatably connected to the fixing rod 315, and the pull roller 316 is used to pull the timing belt 306, so that the timing belt 306 is in a taut state.

[0041] In practical use, the fixing bolts 305 are removed, so that the support wheel 303 and the baffle 304 can be removed. The support wheel 303 of different diameters is selected according to the requirements of different biodegradable membrane materials. The multiple limiting grooves on the support wheel 303 are aligned with the limiting block 307, so that the support wheel 303 can be installed on the fixing sleeve 302.

[0042] Under the action of the timing belt 306, the support wheel 303 drives the fixed sleeve 302 and the rotating rod 203 to rotate at a speed that is equal to the speed at which the transmission shaft 201 drives the pulling roller 202 to rotate, which can achieve the purpose of stretching the material, thereby better stretching the biodegradable membrane. The baffle 304 and the fixing bolt 305 are installed. The baffle 304 can support the rotating rod 203, making it less likely for the rotating rod 203 to fall off.

[0043] The rotating block 310 can drive the threaded rod 309 to rotate, the threaded rod 309 can drive the threaded block 311 to move, and the threaded block 311 can drive one end of the connecting rod 312 to move, thereby pushing the push plate 313, the support plate 314, the fixed rod 315 and the pulling roller 316 to move. In addition, the pulling roller 316 can pull the timing belt 306 to deform, so that the timing belt 306 is in a taut state, which facilitates transmission.

[0044] When the motor 206 is started, the motor 206 can control the transmission shaft 201 to rotate. The transmission shaft 201 can drive the pull roller 202 and the drive pulley 301 to rotate. The drive pulley 301 can drive the synchronous belt 306 to rotate, thereby driving the support wheel 303, the fixed sleeve 302 and the rotating rod 203 to rotate. Under the transmission of the transmission gear 207, the transmission shaft 201 and the rotating rod 203 can drive the transmission shaft 201 and the rotating rod 203 to rotate relative to each other, so that a pair of transmission shafts 201 and rotating rods 203 can drive a pair of pull rollers 202 and rotating rollers 204 to rotate relative to each other.

[0045] The diameter of the support wheel 303 is smaller than that of the drive pulley 301, which makes the rotation speed of the rotating rod 203 faster than that of the drive shaft 201. The drive shaft 201 drives the pull roller 202 to control the speed at which the biodegradable membrane enters between the rotating roller 204 and the pull roller 202. The rotating rod 203 drives the rotating roller 204 to rotate faster, which can stretch the biodegradable membrane.

[0046] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0047] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. Stretching apparatus suitable for biodegradable films, characterized in that, Include: Fixed frame; Tension structure, installed on the fixed frame, the tension structure includes a pair of transmission shafts, the transmission shafts are fixed with pulling rollers, a pair of rotating rods are rotatably connected to the fixed frame, the rotating rods are fixed with rotating rollers; Transmission mechanism, installed on one side of the fixed frame, the transmission mechanism includes a driving pulley, one end of the rotating rod is fixed with a fixed sleeve, the fixed sleeve is installed with a supporting wheel, one side of the supporting wheel is provided with a baffle, the baffle and the rotating rod are installed with a fixed bolt, the driving pulley and the supporting wheel are sleeved with a synchronous belt.

2. The stretching apparatus suitable for biodegradable films according to claim 1, characterized in that, One side of the fixed frame is installed with a protective cover, the protective cover is installed with a motor, the motor is fixedly connected with one end of the transmission shaft.

3. The stretching apparatus suitable for biodegradable films according to claim 2, characterized in that, The ends of the pair of transmission shafts and rotating rods away from the protective cover are fixed with transmission gears meshing with each other, one side of the pair of transmission gears is provided with a fixed cover.

4. The stretching apparatus suitable for biodegradable films according to claim 2, characterized in that, The protective cover is hinged with a cover plate.

5. The stretching apparatus suitable for biodegradable films according to claim 1, characterized in that, The fixed sleeve is fixed with a plurality of limiting blocks, the supporting wheel is drilled with a plurality of limiting grooves.

6. The stretching apparatus suitable for biodegradable films according to claim 1, characterized in that, The fixed frame is fixed with a pair of fixed plates.

7. The stretching apparatus suitable for biodegradable films according to claim 6, characterized in that, A threaded rod is rotatably connected between the pair of fixed plates, one end of the threaded rod is fixed with a rotating block.

8. The stretching apparatus suitable for biodegradable films according to claim 7, characterized in that, A pair of threaded blocks are threadedly connected to the threaded rod, the threaded blocks are hinged with connecting rods.

9. The stretching apparatus suitable for biodegradable films according to claim 8, characterized in that, The ends of the pair of connecting rods away from the threaded blocks are hinged with push plates, the push plates are fixed with a pair of supporting plates.

10. The stretching apparatus suitable for biodegradable films according to claim 9, characterized in that, A fixed rod is fixed between the pair of supporting plates, the fixed rod is rotatably connected with a pulling roller.

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