A packing tape width limiting device

Abstract

The application discloses a packing belt width limiting device, and relates to the field of packing belts, which comprises a machine case, a conveying component, a roll material assembly, a rotating shaft, a cutting assembly, a servo motor, a transmission connection of a worm gear and a worm, a transmission shaft, a transmission gear, a driven gear, a threaded sleeve, a push tube, two blades, a rectangular through slot, a stretch spring, a pressure block, a speed reducer and a rotating shaft.

Description

Technical Field

[0001] This utility model relates to the field of packing strap technology, and in particular to a packing strap width limiting device. Background Technology

[0002] Packing straps, also known as binding straps, packing lines, or strapping, are strip-shaped materials used to bind, secure, or pack items. They are usually made of plastic, metal, or other materials and have a certain strength and flexibility. They can easily and quickly fix items together for easy handling and transportation. Currently, the most common type of packing strap is PET packing straps.

[0003] Width limiting devices are used in the production of packing straps. Raw materials are extruded through an extruder and then stretched. After stretching, the width of the PET packing strap raw material cannot be maintained at the state during extrusion. Therefore, width limiting devices are used to cut and limit the width of the stretched plastic strip, thereby controlling the width of the packing strap.

[0004] Existing width limiting devices mainly use a fixed side plate to abut and limit one side of the packing strap, and then use a fixed blade to cut the other side of the stretched packing strap to achieve width limiting. However, this method of cutting and limiting width on only one side requires an additional cutting and deburring process, which reduces processing efficiency and is inconvenient to use. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the problems existing in the prior art, this utility model provides a packing strap width limiting device.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model is implemented through the following technical solution: a packing strap width limiting device, including a chassis, a conveying component is provided on the outer surface of the chassis, two roll assemblies are provided on the outer surface of the chassis, a rotating shaft is inserted inside the chassis, and a cutting component is provided on the outer surface of the rotating shaft;

[0009] The cutting assembly includes two push tubes slidably disposed on the outer surface of a rotating shaft, with blades fixedly mounted at adjacent ends of the two push tubes. The interior of the housing contains two threaded sleeves, the interior of which meshes with the outer surface of the push tubes. A driven gear is fixedly mounted on the outer surface of the threaded sleeves. The interior of the housing is movably connected to a drive shaft via bearings, and two drive gears are fixedly mounted on the outer surface of the drive shaft, meshing with the driven gears.

[0010] The coil component includes a reel movably mounted on the outer surface of a housing, with a pressure block slidably disposed at the end of the reel away from the housing, and a tension spring fixedly connected between the pressure block and the outer surface of the reel.

[0011] In a preferred embodiment of the packing strap width limiting device of this utility model, a geared motor is fixedly installed inside the housing, the output end of the geared motor is fixedly connected to one end of the rotating shaft, a rotating block is fixedly installed on the outer surface of the middle part of the rotating shaft, and transmission sprockets are fixedly installed on the outer surfaces of both ends of the rotating shaft and the outer surface of the end of the reel near the housing, and a transmission chain is connected between the transmission sprockets.

[0012] In a preferred embodiment of the packing strap width limiting device of this utility model, a servo motor is fixedly installed inside the housing, a worm gear is fixedly connected to the output end of the servo motor, and a worm wheel is fixedly connected to the outer surface of the transmission shaft near the worm wheel end, and the worm wheel is meshed with the worm gear.

[0013] As a preferred embodiment of the packing strap width limiting device of this utility model, the outer surface of the housing is provided with a circular hole for the movement of the push tube, the inner wall of the circular hole is fixedly connected with a limiting block, and the outer surface of the push tube is provided with a sliding groove that cooperates with the limiting block.

[0014] In a preferred embodiment of the packing strap width limiting device of this utility model, a connecting plate is fixedly installed inside the housing, the interior of the connecting plate is movably connected to the outer surface of the threaded sleeve through a bearing, and the connecting plate abuts against the side of the driven gear.

[0015] In a preferred embodiment of the packing strap width limiting device of this utility model, the inside of the reel has a rectangular through groove, the outer surface of the reel away from the machine housing has a limiting groove, the outer surface of the pressure block has a protrusion that matches the limiting groove, two limiting shafts are fixedly connected to the outer surface of the reel away from the machine housing, the inside of the pressure block has a through hole that matches the limiting shaft, the upper surface of the pressure block has an arc-shaped groove, and a gripping rod is fixedly installed inside the arc-shaped groove.

[0016] In a preferred embodiment of the packing strap width limiting device of this utility model, a blind hole is provided on the lower surface of the pressure block, and one end of the tension spring is fixedly connected to the inner wall of the blind hole.

[0017] In a preferred embodiment of the packing strap width limiting device of this utility model, a plurality of connecting rods are fixedly connected to the outer surface of the casing, and a support ring is fixedly connected to the end of the connecting rod away from the casing. The support ring has a circular hole inside that mates with the roller.

[0018] (III) Beneficial Effects

[0019] This utility model provides a packing strap width limiting device. It has the following beneficial effects:

[0020] 1. The servo motor drives the transmission shaft to rotate through the transmission connection of the worm gear and worm. The transmission shaft drives the threaded sleeve to rotate through the cooperation of the transmission gear and the driven gear. The threaded sleeve drives the push tube to move, thereby driving the blades on both sides to move towards each other and move the blades to the appropriate position to adjust the width of the cutting strap and achieve cutting on both sides of the strap. No additional deburring step is required afterward, making it convenient to use.

[0021] 2. After passing one end of the cut-out packing tape waste through the rectangular slot inside the reel, the pressure block is driven down by the tension spring to press down one end of the waste under the action of the tension spring. Then, the reduction motor is started, which drives the rotating shaft to rotate. The rotating shaft, through the cooperation of the transmission chain and the transmission sprocket, drives the rotating block to start rotating synchronously with the reel, thereby achieving the winding and collection of waste through the reel. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0024] Figure 2 This is a schematic diagram of the internal structure of the chassis of this utility model.

[0025] Figure 3 This is an exploded structural diagram of the cutting component of this utility model.

[0026] Figure 4 This is an exploded structural diagram of the coil assembly of this utility model.

[0027] In the diagram, 1 is the chassis; 2 is the conveying component; 3 is the rotating shaft; 4 is the roll assembly; 401 is the connecting rod; 402 is the roll; 403 is the limiting shaft; 404 is the tension spring; 405 is the pressure block; 406 is the gripping rod; 407 is the support ring; 5 is the geared motor; 6 is the transmission chain; 7 is the transmission sprocket; 8 is the cutting assembly; 801 is the transmission shaft; 802 is the limiting block; 803 is the push tube; 804 is the threaded sleeve; 805 is the blade; 806 is the connecting disc; 807 is the rotating block; 808 is the driven gear; 809 is the transmission gear; 810 is the servo motor; 811 is the worm gear; and 812 is the worm. Detailed Implementation

[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0029] Example 1

[0030] Reference Figure 1 , Figure 2 and Figure 3 This is the first embodiment of the present utility model. This embodiment provides a packing strap width limiting device, including a machine box 1, a conveying component 2 is provided on the outer surface of the machine box 1, two roll material assemblies 4 are provided on the outer surface of the machine box 1, a rotating shaft 3 is inserted inside the machine box 1, and a cutting component 8 is provided on the outer surface of the rotating shaft 3.

[0031] The cutting assembly 8 includes two push tubes 803 slidably disposed on the outer surface of the rotating shaft 3. A blade 805 is fixedly installed at an adjacent end of each of the two push tubes 803. Two threaded sleeves 804 are disposed inside the housing 1. The inside of the threaded sleeves 804 is meshed with the outer surface of the push tubes 803. A driven gear 808 is fixedly installed on the outer surface of the threaded sleeves 804. A drive shaft 801 is movably connected inside the housing 1 through a bearing. Two drive gears 809 are fixedly installed on the outer surface of the drive shaft 801. The drive gears 809 are meshed with the driven gears 808.

[0032] Specifically, a geared motor 5 is fixedly installed inside the housing 1. The output end of the geared motor 5 is fixedly connected to one end of the rotating shaft 3. A rotating block 807 is fixedly installed on the outer surface of the middle part of the rotating shaft 3. A transmission sprocket 7 is fixedly installed on the outer surfaces of both ends of the rotating shaft 3 and the outer surface of the end of the winding shaft 402 near the housing 1. A transmission chain 6 is connected between the transmission sprockets 7. The geared motor 5 drives the rotating shaft 3 to rotate. Through the cooperation of the transmission sprockets 7 and the transmission chain 6, the rotating shaft 3 and the winding component are driven to rotate synchronously, which facilitates the winding component to wind the material. The rotating block 807 is used to press the middle of the strapping tape to prevent the strapping tape from shifting under the action of the blade 805.

[0033] Specifically, a servo motor 810 is fixedly installed inside the chassis 1. A worm gear 812 is fixedly connected to the output end of the servo motor 810. A worm gear 811 is fixedly connected to the outer surface of the drive shaft 801 near the end of the worm wheel 811. The worm wheel 811 is meshed with the worm gear 812.

[0034] Specifically, the outer surface of the chassis 1 is provided with a circular hole for the movement of the push tube 803. The inner wall of the circular hole is fixedly connected to a limit block 802. The outer surface of the push tube 803 is provided with a sliding groove that cooperates with the limit block 802. By cooperating with the limit block 802 and the sliding groove, the push tube 803 is controlled to prevent the push tube 803 from rotating with the rotation shaft 3.

[0035] Specifically, a connecting plate 806 is fixedly installed inside the chassis 1. The interior of the connecting plate 806 is movably connected to the outer surface of the threaded sleeve 804 through a bearing. The connecting plate 806 abuts against the side of the driven gear 808. By setting the connecting plate 806, the driven gear 808 is limited, thereby limiting the threaded sleeve 804 and preventing the threaded sleeve 804 from moving. There are four connecting plates 806. The four connecting plates 806 abut against and limit the two sides of the two driven gears 808 respectively.

[0036] Furthermore, the servo motor 810 drives the transmission shaft 801 to rotate through the transmission connection of the worm gear 811 and the worm 812. The transmission shaft 801 drives the threaded sleeve 804 to rotate through the cooperation of the transmission gear 809 and the driven gear 808. The threaded sleeve 804 drives the push tube 803 to move, thereby driving the blades 805 on both sides to move towards each other, moving the blades 805 to a suitable position to adjust the width of the cutting strapping. The blades 805 cut both sides of the strapping. The connection relationship, working principle and operation sequence between the conveying component 2 and other components are existing technologies and are common knowledge known to those skilled in the art, and will not be elaborated on here.

[0037] Example 2

[0038] Reference Figure 1 , Figure 2 and Figure 4 This is the second embodiment of the present invention. This embodiment is based on the previous embodiment. The roll component includes a roll 402 that is movably installed on the outer surface of the housing 1. A pressure block 405 is slidably disposed at the end of the roll 402 away from the housing 1. A tension spring 404 is fixedly connected between the pressure block 405 and the outer surface of the roll 402.

[0039] Specifically, the scroll 402 has a rectangular through groove inside, and a limiting groove is formed on the outer surface of the end of the scroll 402 away from the housing 1. The outer surface of the pressure block 405 has a protrusion that matches the limiting groove. Two limiting shafts 403 are fixedly connected to the outer surface of the end of the scroll 402 away from the housing 1. The pressure block 405 has a through hole that matches the limiting shaft 403 inside. The upper surface of the pressure block 405 has an arc-shaped groove, and a holding rod 406 is fixedly installed inside the arc-shaped groove. The rectangular through groove allows one end of the waste material to pass through the rectangular through groove for winding and fixing. Subsequently, a cutter can be inserted into the rectangular through groove and then slid laterally to cut and recycle the waste material. The limiting groove and the protrusion limit the lifting and lowering of the pressure block 405 to prevent misalignment. The holding rod 406 facilitates the lifting operation of the pressure block 405.

[0040] Specifically, a blind hole is provided on the lower surface of the pressure block 405, and one end of the tension spring 404 is fixedly connected to the inner wall of the blind hole. By setting the blind hole, the tension spring 404 can drive the pressure block 405 to fit against the outer surface of the roll 402, thereby facilitating the fixing of one end of the waste material.

[0041] Specifically, a number of connecting rods 401 are fixedly connected to the outer surface of the chassis 1. A support ring 407 is fixedly connected to the end of the connecting rod 401 away from the chassis 1. The support ring 407 has a round hole inside that mates with the scroll 402. The connecting rods 401 and the support ring 407 provide auxiliary support for the scroll 402, preventing the scroll 402 from shifting due to its own weight.

[0042] Furthermore, after passing one end of the cut-out packing tape waste through the rectangular slot inside the reel 402, the other end of the packing tape waste is placed under the pressure block 405. The gripping rod 406 is released, and under the action of the tension spring 404, the pressure block 405 is driven to press down one end of the waste. Then, the reduction motor 5 is started, which drives the rotating shaft 3 to rotate. The rotating shaft 3, through the cooperation of the transmission chain 6 and the transmission sprocket 7, drives the rotating block 807 to start rotating synchronously with the reel 402, thereby achieving the winding and collection of waste through the reel 402.

[0043] Working Principle: During the production of strapping, one end of the stretched and formed strapping is pulled out above the conveyor component 2, so that the strapping is pressed under the rotating block 807. Then, the servo motor 810 is started. The servo motor 810 is connected to the worm gear 812 through the worm wheel 811, which drives the transmission shaft 801 to rotate. The transmission shaft 801, through the cooperation of the transmission gear 809 and the driven gear 808, drives the threaded sleeve 804 to rotate. The threaded sleeve 804 drives the push tube 803 to move, thereby driving the blades 805 on both sides to move towards each other. The blades 805 are moved to a suitable position to adjust the width of the strapping. The blades 805 cut the strapping on both sides, and the cut strapping is pulled to the position of the pressure block 405. The pressure block 405 is pulled up by the gripping rod 406, and the cut strapping waste is removed. After one end passes through the rectangular slot inside the reel 402, place one end of the waste strapping material under the pressure block 405. Release the gripping rod 406, and under the action of the tension spring 404, drive the pressure block 405 to press down one end of the waste material. Then start the reduction motor 5, which drives the rotating shaft 3 to rotate. The rotating shaft 3, through the cooperation of the transmission chain 6 and the transmission sprocket 7, drives the rotating block 807 and the reel 402 to start rotating synchronously. Finally, the pulled-out strapping material is conveyed by the rotating block 807 and the conveying component 2, and then passes through the blade 805 to cut both sides of the strapping material. The cut waste material is then wound and collected by the reel 402. After the subsequent cutting is completed, the waste material can be cut and recycled by inserting the blade into the rectangular slot inside the reel 402 and sliding the blade laterally, thus completing the width-limiting cutting process of the strapping material.

[0044] It should be noted that in this paper, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

Claims

1. A packing strap width limiting device, comprising a housing, wherein a conveying component is disposed on the outer surface of the housing, characterized in that: Two roll assemblies are provided on the outer surface of the chassis, a rotating shaft is inserted inside the chassis, and a cutting assembly is provided on the outer surface of the rotating shaft; The cutting assembly includes two push tubes slidably disposed on the outer surface of a rotating shaft. A blade is fixedly mounted on one adjacent end of each of the two push tubes. Two threaded sleeves are disposed inside the housing. The interior of the threaded sleeves meshes with the outer surface of the push tubes. A driven gear is fixedly mounted on the outer surface of the threaded sleeves. A drive shaft is movably connected inside the housing via bearings. Two drive gears are fixedly mounted on the outer surface of the drive shaft. The drive gears mesh with the driven gears. The roll assembly includes a roll movably mounted on the outer surface of the housing, with a pressure block slidably disposed at the end of the roll away from the housing, and a tension spring fixedly connected between the pressure block and the outer surface of the roll.

2. The packing strap width limiting device according to claim 1, characterized in that: A geared motor is fixedly installed inside the chassis. The output end of the geared motor is fixedly connected to one end of the rotating shaft. A rotating block is fixedly installed on the outer surface of the middle part of the rotating shaft. Transmission sprockets are fixedly installed on the outer surfaces of both ends of the rotating shaft and the outer surface of the end of the reel near the chassis. A transmission chain is connected between the transmission sprockets.

3. The packing strap width limiting device according to claim 2, characterized in that: A servo motor is fixedly installed inside the chassis. A worm gear is fixedly connected to the output end of the servo motor. A worm wheel is fixedly connected to the outer surface of the drive shaft near the worm wheel end. The worm wheel meshes with the worm gear.

4. The packing strap width limiting device according to claim 3, characterized in that: The outer surface of the chassis is provided with a circular hole for the movement of the push tube. A limit block is fixedly connected to the inner wall of the circular hole, and a sliding groove that cooperates with the limit block is provided on the outer surface of the push tube.

5. A packing strap width limiting device according to claim 4, characterized in that: A connecting plate is fixedly installed inside the chassis. The interior of the connecting plate is movably connected to the outer surface of the threaded sleeve via a bearing. The connecting plate abuts against the side of the driven gear.

6. A packing strap width limiting device according to claim 5, characterized in that: The inside of the reel has a rectangular through groove, and the outer surface of the reel away from the housing has a limiting groove. The outer surface of the pressure block has a protrusion that matches the limiting groove. Two limiting shafts are fixedly connected to the outer surface of the reel away from the housing. The inside of the pressure block has a through hole that matches the limiting shaft. The upper surface of the pressure block has an arc-shaped groove, and a gripping rod is fixedly installed inside the arc-shaped groove.

7. A packing strap width limiting device according to claim 6, characterized in that: A blind hole is provided on the lower surface of the pressure block, and one end of the tension spring is fixedly connected to the inner wall of the blind hole.

8. A packing strap width limiting device according to claim 7, characterized in that: Several connecting rods are fixedly connected to the outer surface of the chassis. A support ring is fixedly connected to the end of the connecting rod away from the chassis. The support ring has a circular hole inside that mates with the roller.

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