Automatic tube pulling equipment for packaging hose

Abstract

The invention relates to the technical field of automatic hose pulling, in particular to automatic packaging hose pulling equipment which comprises an L-shaped supporting frame, a horizontal section of the L-shaped supporting frame is provided with a containing mechanism used for containing and installing a hose, and a vertical section of the L-shaped supporting frame is provided with a cutting mechanism used for annularly cutting the hose. According to the flexible pipe stretching and limiting device, stretching and limiting work of a flexible pipe is achieved through the two tooth belts rotating in a reciprocating mode, bending and skewing of the flexible pipe in the stretching work are avoided, and the flexible pipe is prevented from being damaged. Meanwhile, auxiliary inner supporting work of the hose is achieved through three inner supporting rods moving synchronously, then the stability of the hose during stretching is guaranteed, the slipping phenomenon is avoided, meanwhile, the stretching length of an annular cutting knife is controlled through different abutting force of an abutting block, the requirement for annular cutting work of hoses with different wall thicknesses is met in cooperation with reciprocating rotation of a gear ring, and the work efficiency is improved. And the ring cutting quality of the hose is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of automatic hose drawing, in particular to an automatic hose drawing device for packaging hoses. Background Art

[0002] Packaging hose is a common packaging form, widely used in the packaging of liquid or semi-solid products in daily chemical, food, medicine, chemical and other industries. This type of hose is light, has good sealing, is easy to carry and use. According to the material of the hose, it can be divided into plastic hose, aluminum-plastic composite hose and paper-plastic composite hose.

[0003] Before using the produced hose, it is usually necessary to put it into the hose drawing equipment and cut or seal it to meet the needs of the hose in different industries such as daily chemicals, food and medicine. When using the existing hose drawing equipment to stretch and cut the hose, the hose is usually manually inserted into the equipment, and then the equipment is started to push the hose to move. After it moves to a certain length, the cutter cuts the hose.

[0004] Although the existing hose drawing equipment can ensure the efficiency of hose drawing and effectively reduce manual intervention, there are still certain problems. Commonly used hoses, such as plastic hoses, have strong plasticity. Therefore, during the stretching and conveying process, they are more susceptible to external forces and thus slightly bend or deflect. Due to the different lengths and positions of the hose bends, the consistency of the length of the hose cut after drawing cannot be guaranteed. At the same time, for hoses with different wall thicknesses, after the hoses are drawn to a certain length, the downward pressing shearing method of a single shear knife is more likely to squeeze the hose mouth, and the shearing quality of the hose cannot be guaranteed. Summary of the invention

[0005] In view of the above problems, the embodiment of the present application provides an automatic tube drawing device for a packaging hose to solve the problems existing in the stretching process of the packaging hose.

[0006] In order to achieve the above-mentioned purpose, the embodiment of the present application provides the following technical solution: it includes an L-shaped support frame, and the front side wall of the L-shaped support frame is symmetrically provided with two groups of strip support plates on the upper and lower sides, each group of strip support plates includes two strip support plates distributed on the left and right, and the horizontal section of the L-shaped support frame is provided with a placing mechanism for placing and installing the hose, and the vertical section of the L-shaped support frame is installed with a cutting mechanism for ring cutting the hose.

[0007] The cutting mechanism includes a funnel-shaped mounting shell arranged on two left strip-shaped supporting plates, a circular through hole penetrating the left and right side walls of the mounting shell is opened on the mounting shell, a clamping portion for pressing the hose tightly is arranged on the mounting shell, and a ring cutting portion for ring cutting the hose is arranged inside the mounting shell in coordination with the clamping portion.

[0008] An actuator is installed on the right side of the annular cutting part, and the actuator includes a No. 2 motor fixedly arranged on the rear side wall of the vertical section of the L-shaped support frame through a motor seat, and the output shaft of the No. 2 motor passes through the L-shaped support frame forward, and a driving part is installed on the output shaft of the No. 2 motor. The driving part is provided with a conveying part for conveying the hose to the right, and an auxiliary mechanism for assisting the hose to move to the right is also installed on the right side of the conveying part.

[0009] The L-shaped support frame is provided with an electric telescopic push rod and a sliding rod distributed in the up and down directions. The outer wall of the sliding rod is slidably provided with a strip connecting plate whose other end is fixedly connected to the telescopic section of the electric telescopic push rod. The front side wall of the strip connecting plate is fixedly provided with a wedge-shaped pushing block.

[0010] Preferably, the clamping part includes an annular disk rotatably arranged on the left side wall of the mounting shell and concentric with the circular through hole, three arc-shaped connecting plates are fixedly arranged on the circumferential outer wall of the annular disk, and the left side walls of the three arc-shaped connecting plates are fixedly arranged with a linkage rod, and three clamping blocks are slidably arranged around the circumferential outer wall of the circular through hole 1 inside the mounting shell, and the left side walls of the three clamping blocks are fixedly arranged with a circular rod that slides through the mounting shell, and the circular rod slides radially along the circular through hole 1, and the circular rod and the linkage rod are hinged by a connecting rod, and a telescopic push rod 1 fixedly connected to any clamping block is also fixedly arranged inside the mounting shell.

[0011] Preferably, the annular cutting portion includes an annular sleeve rotatably arranged inside the mounting shell and coaxial with the circular through hole, the outer wall of the annular sleeve is fixedly provided with a plurality of teeth along the circumferential direction, the inner wall of the annular sleeve is provided with three arc-shaped mounting grooves along the circumferential direction, arc-shaped cutters are arranged inside the three arc-shaped mounting grooves through spring sliding, a telescopic push rod 2 is also fixedly arranged inside the mounting shell, a rack 1 is fixedly arranged on the telescopic section of the telescopic push rod 2, and the rack 1 is meshed with the teeth on the annular sleeve through an adjusting gear.

[0012] Preferably, the driving part includes two No. 1 gears rotatably arranged on the rear side of the vertical section of the L-shaped support frame in a vertically symmetrical manner, the two No. 1 gears are meshed for transmission, any one of the No. 1 gears is fixedly connected to the output shaft of the No. 2 motor, and the front side wall of the vertical section of the L-shaped support frame is provided with a driving group in a vertically symmetrical manner, each driving group includes three connecting shafts arranged in a triangular shape, the two connecting shafts located on the far right respectively penetrate the L-shaped support frame and are fixedly connected to the corresponding No. 1 gears, and the remaining connecting shafts are rotatably connected to the L-shaped support frame.

[0013] Preferably, the conveying part includes a T-shaped shell installed on the right side of the mounting shell in a vertically symmetrical manner, and three synchronous pulleys are rotatably arranged inside the T-shaped shell corresponding to the position of the connecting shaft. The three synchronous pulleys located inside the same T-shaped shell are connected by a toothed belt transmission, and the connecting shaft rotates through the T-shaped shell and is fixedly connected to the corresponding synchronous pulley.

[0014] Preferably, the horizontal section of the L-shaped support frame is provided with a strip slide groove with an open front end in the front-to-back direction, the vertical section of the L-shaped support frame is provided with an avoidance groove at a position corresponding to the strip slide groove on the left side, and the front side wall of the L-shaped support frame is also provided with a slide rail located on the right side of the avoidance groove toward the right, and an electric slider with an electromagnet as the front side wall is slidably arranged inside the slide rail.

[0015] Preferably, the auxiliary mechanism includes a rectangular plate which is arranged on the end faces of the two right side strip support plates and has a circular through groove, the circular through groove is coaxial with the circular through hole, the left side wall of the rectangular plate is fixedly connected to the mounting shell through a strip plate 1, an adjusting column with the right end extending beyond the rectangular plate is rotatably arranged inside the circular through groove, a portion of the adjusting column extending beyond the rectangular plate is fixedly provided with a plurality of teeth along the circumferential direction, the right side wall of the adjusting column is also provided with three arc-shaped through grooves toward the left along the circumferential direction, a telescopic push rod 3 is fixedly provided on the right side wall of the rectangular plate, and a rack 2 which is always meshed with the teeth is fixedly provided on the telescopic section of the telescopic push rod 3.

[0016] Preferably, the auxiliary mechanism also includes a mounting plate fixedly connected to the electric slider through a second strip plate, an inner support rod is slidably provided on the left side wall of the mounting plate at positions corresponding to the three arc-shaped through grooves, and two concentric circular through holes are provided on the mounting plate and the adjusting column.

[0017] Preferably, the material loading mechanism comprises an arc-shaped material loading rack, which is slidably arranged inside a strip slide groove, on which a hose reel is placed, and inside the strip slide groove a reciprocating screw fixedly connected to an output shaft of an external motor is rotatably arranged, and an outer wall of the reciprocating screw is threadedly connected to the arc-shaped material loading rack.

[0018] Preferably, the arc-shaped material rack is divided into a support block sliding inside the strip slide groove and an annular tube rotatably arranged at the rear side of the support block and used to support the hose reel. A threaded groove is opened on the outer wall of the annular tube, and the hose reel is installed on the outer wall of the annular tube by means of a threaded connection.

[0019] Compared with the prior art, the embodiments of the present invention provide the following beneficial effects:

[0020] 1. The present invention is provided with two reciprocating toothed belts to realize the stretching of the hose. The toothed belts on both sides limit the hose to prevent the hose from bending and skewing during the stretching. At the same time, the present invention realizes the auxiliary internal support of the hose through three synchronously moving internal support rods, thereby ensuring the stability of the hose during stretching and avoiding slipping.

[0021] 2. The present invention preferentially realizes the initial tightening work on the outer wall of the hose by the synchronous approach of the three tightening blocks, so as to ensure the stability of the hose during the stretching process. When the hose is ring-cut, the three ring-cutting knives are controlled to extend through the pushing of the three tightening blocks, and the rack drives the gear ring and the three ring-cutting knives to rotate to complete the ring-cutting work of the hose. At the same time, during the ring-cutting process, the extended length of the ring-cutting knife is controlled by the different tightening forces of the tightening blocks, and the reciprocating rotation of the gear ring is coordinated to meet the ring-cutting work of hoses with different wall thicknesses, thereby ensuring the quality of the ring-cutting and also improving the diversity of the ring-cutting work. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional structural schematic diagram of the present invention.

[0023] Figure 2 It is a schematic diagram of the positional relationship between the material placement mechanism and the L-shaped support frame in the present invention.

[0024] Figure 3 It is a schematic diagram of the positional relationship between the cutting mechanism and the auxiliary mechanism in the present invention.

[0025] Figure 4 It is a schematic diagram of the three-dimensional structure of the annular cutting portion in the present invention.

[0026] Figure 5 yes Figure 4 A partial enlarged view of point A in the figure.

[0027] Figure 6 It is a schematic diagram of the three-dimensional structure of the clamping part in the present invention.

[0028] Figure 7 It is a schematic diagram of the first position of the actuator in the present invention.

[0029] Figure 8 It is a schematic diagram of the second position of the actuator in the present invention.

[0030] Fig. 9 It is a partial structural schematic diagram of the auxiliary mechanism in the present invention.

[0031] Fig.10 It is a cross-sectional view of a rectangular plate in the present invention.

[0032] Fig.11 It is an exploded view of the hose reel and the arc-shaped material rack in the present invention.

[0033] The reference numerals in the figure are as follows: 1, L-shaped support frame; 11, strip support plate; 12, strip slide groove; 13, avoidance groove; 14, slide rail; 15, electric slider; 16, electric telescopic push rod; 17, slide rod; 18, wedge-shaped push block; 2, material placement mechanism; 21, arc-shaped material placement frame; 22, No. 1 motor; 23, reciprocating screw; 3, cutting mechanism; 31, mounting housing; 311, circular through hole 1; 32, clamping part; 321, annular disk; 322, arc-shaped connecting plate; 323, linkage rod; 324, tightening block; 325, circular rod; 326, connecting rod; 327, telescopic push rod 1; 33, Annular cutting part; 331, gear ring; 3311, arc-shaped mounting groove; 332, arc-shaped cutter; 333, telescopic push rod 2; 334, rack 1; 4, actuator; 41, motor No. 2; 42, driving part; 421, gear No. 1; 422, connecting shaft; 43, conveying part; 431, T-shaped shell; 432, synchronous pulley; 433, toothed belt; 5, auxiliary mechanism; 51, rectangular plate; 511, strip plate 1; 52, adjusting column; 521, teeth; 522, arc-shaped through groove; 53, telescopic push rod 3; 54, rack 2; 55, mounting plate; 551, inner support rod; 56, strip plate 1. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1-11 This application is further described in detail.

[0035] Please refer to Figure 1 and Figure 6 A packaging hose automatic tube drawing equipment includes an L-shaped support frame 1, and the front side wall of the L-shaped support frame 1 is symmetrically provided with two groups of strip support plates 11 on the upper and lower sides, and each group of strip support plates 11 includes two strip support plates 11 distributed on the left and right. A placing mechanism 2 for placing and installing the hose is provided on the horizontal section of the L-shaped support frame 1, and a cutting mechanism 3 for ring cutting the hose is installed on the vertical section of the L-shaped support frame 1.

[0036] Please refer to Figure 3 and Figure 4 The cutting mechanism 3 includes a funnel-shaped mounting shell 31 arranged on the two left strip-shaped support plates 11, and a circular through hole 311 penetrating the left and right side walls of the mounting shell 31 is opened on the mounting shell 31. A clamping portion 32 for tightening the hose is provided on the mounting shell 31, and a ring cutting portion 33 for ring cutting the hose is provided inside the mounting shell 31 in coordination with the clamping portion 32.

[0037] Please refer to Figure 1 and Figure 7An actuator 4 is installed on the right side of the annular cutting portion 33. The actuator 4 includes a No. 2 motor 41 fixedly arranged on the rear side wall of the vertical section of the L-shaped support frame 1 through a motor seat. The output shaft of the No. 2 motor 41 passes through the L-shaped support frame 1 forward. A driving portion 42 is installed on the output shaft of the No. 2 motor 41. A conveying portion 43 for conveying the hose to the right is provided on the driving portion 42. An auxiliary mechanism 5 for assisting the hose to move to the right is also installed on the right side of the conveying portion 43.

[0038] Please refer to Figure 1 and Fig. 9 The L-shaped support frame 1 is provided with an electric telescopic push rod 16 and a slide rod 17 distributed in the up and down directions. The outer wall of the slide rod 17 is slidably provided with a strip connecting plate whose other end is fixedly connected to the telescopic section of the electric telescopic push rod 16, and the front side wall of the strip connecting plate is fixedly provided with a wedge-shaped pushing block 18.

[0039] During the specific operation, the hose reel is first pushed onto the feeding mechanism 2 manually and fixed by means of threaded connection, the hose is pulled out to a certain length, passes through the clamping part 32 and is placed between the conveying parts 43, and then the clamping part 32 is used to clamp the hose to ensure that the hose does not slip, and then the driving part 42 is controlled to drive the conveying part 43 to work and convey the hose to the right. During the process of conveying the hose to the right, the feeding mechanism 2 is started to drive the hose reel to move back and forth to ensure that the center of the pulled hose is always coaxial with the center of the circular through hole 311 as much as possible, so as to prevent the hose from being bent by the inner wall of the circular through hole 311.

[0040] During the process of conveying the hose to the right, the auxiliary mechanism 5 is controlled to support the hose internally to prevent the hose from being deformed by external forces during transportation. When the hose is conveyed to the specified position, the annular cutting part 33 is controlled to cut the hose. Finally, the wedge-shaped pusher block 18 pushes the cut hose to the external storage box.

[0041] Please refer to Figure 2 and Figure 3 The horizontal section of the L-shaped support frame 1 is provided with a strip slide groove 12 with an opening at the front end in the front-to-back direction, and the vertical section of the L-shaped support frame 1 is provided with an avoidance groove 13 at the position corresponding to the strip slide groove 12 on the left side. The front side wall of the L-shaped support frame 1 is also provided with a slide rail 14 located on the right side of the avoidance groove 13 toward the right, and an electric slider 15 with an electromagnet as the front side wall is slidably arranged inside the slide rail 14.

[0042] Please refer to Figure 1 and Figure 2The material placement mechanism 2 includes an arc-shaped material placement rack 21, which is slidably arranged inside the strip slide 12, and a hose reel is placed on the arc-shaped material placement rack 21. A reciprocating screw 23 fixedly connected to the output shaft of an external motor is also rotatably arranged inside the strip slide 12, and the outer wall of the reciprocating screw 23 is threadedly connected to the arc-shaped material placement rack 21.

[0043] Please refer to Fig.11 The arc-shaped material rack 21 is divided into a support block that slides inside the strip slide groove 12 and an annular tube that is rotatably arranged at the rear side of the support block and is used to support the hose reel. A threaded groove is opened on the outer wall of the annular tube, and the hose reel is installed on the outer wall of the annular tube by threaded connection.

[0044] Please refer to Figure 4 , Figure 5 and Figure 6 The clamping portion 32 includes an annular disk 321 rotatably arranged on the left side wall of the mounting shell 31 and concentric with the circular through hole 1 311, three arc-shaped connecting plates 322 are fixedly arranged on the circumferential outer wall of the annular disk 321, and the left side walls of the three arc-shaped connecting plates 322 are fixedly arranged with a linkage rod 323, and three abutting blocks 324 are slidably arranged around the circumferential outer wall of the circular through hole 1 311 inside the mounting shell 31, and the left side walls of the three abutting blocks 324 are fixedly arranged with a circular rod 325 sliding through the mounting shell 31, and the circular rod 325 slides radially along the circular through hole 1 311, and the circular rod 325 is hinged to the linkage rod 323 through a connecting rod 326, and a telescopic push rod 1 327 fixedly connected to any abutting block 324 is also fixedly arranged inside the mounting shell 31.

[0045] When the hose needs to be pulled and cut, the reciprocating screw 23 is first driven to rotate by an external motor, and the reciprocating screw 23 drives the arc-shaped material rack 21 to slide backward along the strip slide groove 12. When the arc-shaped material rack 21 slides to the rear end, the hose reel is manually pushed to the outer wall of the annular tube, and the hose reel is screwed to the outer wall of the annular tube by threaded connection, thereby completing the locking work of the hose reel.

[0046] When the hose reel completes the locking work, the end of the hose is manually pulled out through the circular through hole 311 of the mounting shell 31 and placed in the conveying part 43, and then the telescopic push rod 327 is controlled to push one of the clamping blocks 324 to move. When the clamping block 324 moves, it pushes the annular disk 321 to rotate through the connecting rod 326. At this time, the other two clamping blocks 324 slide synchronously under the pull of the annular disk 321 and the corresponding connecting rod 326, and the three clamping blocks 324 approach synchronously and perform preliminary clamping work on the outer wall of the hose to ensure that the hose will not slip before the tube pulling work is carried out.

[0047] Please refer to Figure 7 and Figure 8 The driving part 42 includes two No. 1 gears 421 rotatably arranged on the rear side of the vertical section of the L-shaped support frame 1 in a vertically symmetrical manner. The two No. 1 gears 421 are meshed for transmission. Any No. 1 gear 421 is fixedly connected to the output shaft of the No. 2 motor 41. The front side wall of the vertical section of the L-shaped support frame 1 is symmetrically installed with a driving group. Each driving group includes three connecting shafts 422 arranged in a triangular shape. The two connecting shafts 422 located on the far right respectively penetrate the L-shaped support frame 1 and are fixedly connected to the corresponding No. 1 gears 421, and the remaining connecting shafts 422 are all rotatably connected to the L-shaped support frame 1.

[0048] Please refer to Figure 8 The conveying part 43 includes a T-shaped shell 431 installed on the right side of the mounting shell 31 in a vertically symmetrical manner. Three synchronous pulleys 432 are rotatably arranged inside the T-shaped shell 431 at the position corresponding to the connecting shaft 422. The three synchronous pulleys 432 located inside the same T-shaped shell 431 are connected by a toothed belt 433. The connecting shaft 422 rotates through the T-shaped shell 431 and is fixedly connected to the corresponding synchronous pulley 432.

[0049] Please refer to Figure 3 , Figure 6 , Fig. 9 and Fig.10 The auxiliary mechanism 5 includes a rectangular plate 51 arranged on the end faces of the two right strip-shaped carrier plates 11 and having a circular through groove, the circular through groove is coaxial with the circular through hole 1 311, the left side wall of the rectangular plate 51 is fixedly connected to the mounting housing 31 through the strip plate 1 511, and an adjusting column 52 whose right end exceeds the rectangular plate 51 is rotatably arranged inside the circular through groove, and a portion of the adjusting column 52 exceeding the rectangular plate 51 is fixedly provided with a plurality of teeth 521 along the circumferential direction, and the right side wall of the adjusting column 52 is also opened to the left along the circumferential direction. There are three arc-shaped through grooves 522, and a telescopic push rod 3 53 is fixedly set on the right side wall of the rectangular plate 51. The telescopic section of the telescopic push rod 3 53 is fixedly set with a rack 2 54 that is always meshed with the teeth 521. The auxiliary mechanism 5 also includes a mounting plate 55 fixedly connected to the electric slider 15 through a strip plate 1 56, and an inner support rod 551 is slidably set on the left side wall of the mounting plate 55 corresponding to the position of the three arc-shaped through grooves 522. Concentric circular through holes 2 are opened on the mounting plate 55 and the adjusting column 52.

[0050] When the three clamping blocks 324 complete the initial clamping work on the hose, start the No. 2 motor 41 to drive the two No. 1 gears 421 to mesh and make the connecting shafts 422 on the two No. 1 gears 421 reverse each other. When the two connecting shafts 422 rotate, the corresponding synchronous pulleys 432 reverse each other. At this time, the remaining synchronous pulleys 432 rotate synchronously under the linkage of the toothed belt 433, and the friction force between the toothed belt 433 and the hose drives the hose to gradually move to the right. It should be noted that the friction force between the toothed belt 433 and the hose is sufficient to pull the hose out from between the three clamping blocks 324.

[0051] When the hose is driven to the right by the toothed belt 433, the electric slider 15 is controlled to slide to the left first. At this time, the mounting plate 55 is also moved to the left synchronously driven by the strip plate 1 56. When the mounting plate 55 moves to the left, it drives the three inner support rods 551 arranged thereon to move between the two toothed belts 433, and cooperates with the rightward movement of the hose, so that the three inner support rods 551 move to the inside of the hose. Then, the telescopic push rod 3 53 is controlled to drive the rack 2 54 to move, and the rack 2 54 engages with the teeth 521 to drive the adjusting column 52 to rotate. At this time, the three inner support rods 551 rotate along their respective arc-shaped through grooves 522 under the rotation of the adjusting column 52 and move away from each other, thereby realizing the internal support work of the hose, and making the hose surface contact with the annular cutting portion 33 as much as possible when the hose is cut off.

[0052] Please refer to Figure 4 and Figure 5 The annular cutting portion 33 includes an annular sleeve 331 rotatably arranged inside the mounting shell 31 and coaxial with the circular through hole 1 311, the outer wall of the annular sleeve 331 is fixedly provided with a plurality of teeth along the circumferential direction, the inner wall of the annular sleeve 331 is provided with three arc-shaped mounting grooves 3311 along the circumferential direction, and arc-shaped cutters 332 are slidably arranged inside the three arc-shaped mounting grooves 3311 through springs (not shown in the drawings), and a telescopic push rod 2 333 is also fixedly arranged inside the mounting shell 31, and a rack 1 334 is fixedly arranged on the telescopic section of the telescopic push rod 2 333, and the rack 1 334 is meshed with the teeth on the annular sleeve 331 through an adjusting gear.

[0053] When the hose moves to the right to the specified position, the telescopic push rod 1 327 is continuously controlled to extend and the three abutting blocks 324 are synchronously approached to push the corresponding arc cutters 332, so that the three arc cutters 332 are synchronously engaged with the outer wall of the hose, and the telescopic push rod 2 333 is controlled to extend and the rack 1 334 engages with the adjusting gear to rotate, and the adjusting gear drives the annular sleeve 331 to rotate. The three arc cutters 332 rotate synchronously under the rotation of the annular sleeve 331, and in the process of rotation, they are pushed by the corresponding abutting blocks 324, thereby compressing the spring and cutting the hose in annularly. In the process of cutting in annularly, the length of the three arc cutters 332 extending out of the annular sleeve 331 is changed by the abutment of the telescopic push rod 1 327, and then the cutting depth of the arc cutter 332 on the hose is changed, to ensure that hoses of different thicknesses can be cut in annularly.

[0054] When the hose circumcision is completed, the electric telescopic push rod 16 is controlled to drive the strip connecting plate and the wedge-shaped push block 18 to extend, and the left end of the cut hose is pushed to the outside of the toothed belt 433 by the wedge-shaped push block 18. At the same time, the telescopic push rod three 53 is controlled to drive the rack two 54 to retract, and the three inner support rods 551 slide synchronously along their respective arc-shaped grooves 522 and approach each other, thereby releasing the internal support of the hose, and the wedge-shaped push block 18 continues to push the hose and push it into the external storage box, thereby completing the hose pulling and cutting work.

[0055] Finally, the electric slider 15 is controlled to slide to the left to the position of the mounting shell 31, the electromagnet on the electric slider 15 is turned on and the electric slider 15 and the mounting shell 31 are electromagnetically fixed, and the electric slider 15 drives the mounting shell 31 and the hose to move to the right. After reaching a certain position, the three clamping blocks 324 are released to clamp the hose, and the electric slider 15 drives the mounting shell 31 to move to the left to the initial position and then clamps the hose again to continue to move to the right, so that the right end of the hose moves between the two toothed belts 433, and the secondary feeding of the hose is completed.

[0056] It should be noted that when the stretching length of a single hose needs to be changed, the electric slider 15 is first controlled to slide to the left. At this time, the three inner support rods 551 on the mounting plate 55 also move to the left and are inserted into the hose. The inner support work of the inner wall of the hose is realized by the three inner support rods 551. Then, the hose is driven to move to the right through the relative rotation of the toothed belts 433 on both sides. At the same time, the electric slider 15 also drives the three inner support rods 551 to move to the right to ensure that the hose will not be blocked during the movement. After reaching the specified position, the movement of the electric slider 15 is stopped. Finally, the three arc-shaped cutters 332 are rotated to complete the circular cutting of the hose.

[0057] In the description of the embodiments of the present invention, it should be noted that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present invention. In addition, in the description of the present invention, unless otherwise specified, "multiple", "multiple roots", and "multiple groups" mean two or more.

[0058] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connect", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0059] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An automatic tube drawing device for packaging hoses, comprising an L-shaped support frame (1), characterized in that: The front side wall of the L-shaped support frame (1) is symmetrically provided with two groups of strip support plates (11) on the upper and lower sides, each group of strip support plates (11) includes two strip support plates (11) distributed on the left and right, a placing mechanism (2) for placing and installing a hose is provided on the longitudinal section of the L-shaped support frame (1), and a cutting mechanism (3) for circumferential cutting of the hose is installed on the vertical section of the L-shaped support frame (1); The cutting mechanism (3) comprises a funnel-shaped mounting shell (31) arranged on two left strip-shaped support plates (11); a circular through hole (311) penetrating the left and right side walls of the mounting shell (31) is provided on the mounting shell (31); a clamping portion (32) for pressing against the hose is provided on the mounting shell (31); and a ring cutting portion (33) for ring cutting the hose is provided inside the mounting shell (31) in cooperation with the clamping portion (32); An actuator (4) is installed on the right side of the annular cutting portion (33), the actuator (4) comprising a No. 2 motor (41) fixedly arranged on the rear side wall of the vertical section of the L-shaped support frame (1) through a motor seat, the output shaft of the No. 2 motor (41) passes through the L-shaped support frame (1) in a forward direction, a driving portion (42) is installed on the output shaft of the No. 2 motor (41), a conveying portion (43) for conveying the hose to the right is installed on the driving portion (42), and an auxiliary mechanism (5) for assisting the hose to move to the right is also installed on the right side of the conveying portion (43); The L-shaped support frame (1) is provided with an electric telescopic push rod (16) and a slide rod (17) distributed in the up-down direction, and the outer wall of the slide rod (17) is slidably provided with a strip connecting plate whose other end is fixedly connected to the telescopic section of the electric telescopic push rod (16), and the front side wall of the strip connecting plate is fixedly provided with a wedge-shaped pushing block (18).

2. The automatic tube drawing equipment for packaging hose according to claim 1, characterized in that: The clamping portion (32) comprises an annular disk (321) rotatably arranged on the left side wall of the mounting shell (31) and concentric with the circular through hole (311); three arc-shaped connecting plates (322) are fixedly arranged on the circumferential outer wall of the annular disk (321); the left side walls of the three arc-shaped connecting plates (322) are fixedly arranged with a linkage rod (323); three abutting blocks (324) are slidably arranged around the circumferential outer wall of the circular through hole (311) inside the mounting shell (31); the left side walls of the three abutting blocks (324) are fixedly arranged with a circular rod (325) that slides through the mounting shell (31); the circular rod (325) slides radially along the circular through hole (311); the circular rod (325) and the linkage rod (323) are hingedly connected by a connecting rod (326); and a telescopic push rod (327) that is fixedly connected to any abutting block (324) is also fixedly arranged inside the mounting shell (31).

3. The automatic tube drawing equipment for packaging hose according to claim 1 is characterized in that: The annular cutting portion (33) comprises an annular sleeve (331) rotatably arranged inside the mounting shell (31) and coaxial with the circular through hole 1 (311); the outer wall of the annular sleeve (331) is fixedly provided with a plurality of teeth along the circumferential direction; the inner wall of the annular sleeve (331) is provided with three arc-shaped mounting grooves (3311) along the circumferential direction; arc-shaped cutters (332) are all provided inside the three arc-shaped mounting grooves (3311) through spring sliding; a telescopic push rod 2 (333) is also fixedly provided inside the mounting shell (31); the telescopic section of the telescopic push rod 2 (333) is fixedly provided with a rack 1 (334); the rack 1 (334) is meshed with the teeth on the annular sleeve (331) through an adjusting gear.

4. The automatic tube drawing equipment for packaging hose according to claim 1, characterized in that: The driving part (42) comprises two No. 1 gears (421) rotatably arranged on the rear side of the vertical section of the L-shaped support frame (1) in a vertically symmetrical manner, the two No. 1 gears (421) meshingly transmitting, any one of the No. 1 gears (421) being fixedly connected to the output shaft of the No. 2 motor (41), and a driving group is installed on the front side wall of the vertical section of the L-shaped support frame (1) in a vertically symmetrical manner, each driving group comprising three connecting shafts (422) arranged in a triangular shape, the two connecting shafts (422) located on the far right respectively penetrate the L-shaped support frame (1) and are fixedly connected to the corresponding No. 1 gears (421), and the remaining connecting shafts (422) are all rotatably connected to the L-shaped support frame (1).

5. The automatic tube drawing equipment for packaging hose according to claim 1, characterized in that: The conveying part (43) comprises a T-shaped shell (431) which is installed on the right side of the installation shell (31) in a vertically symmetrical manner. Three synchronous pulleys (432) are rotatably arranged inside the T-shaped shell (431) corresponding to the position of the connecting shaft (422). The three synchronous pulleys (432) located inside the same T-shaped shell (431) are connected by a toothed belt (433). The connecting shaft (422) rotates through the T-shaped shell (431) and is fixedly connected to the corresponding synchronous pulley (432).

6. The automatic tube drawing equipment for packaging hose according to claim 1, characterized in that: The longitudinal section of the L-shaped support frame (1) is provided with a strip-shaped slide groove (12) with an opening at the front end in the front-back direction, the vertical section of the L-shaped support frame (1) is provided with an avoidance groove (13) at a position corresponding to the strip-shaped slide groove (12) on the left side, and the front side wall of the L-shaped support frame (1) is also provided with a slide rail (14) located on the right side of the avoidance groove (13) toward the right, and an electric slider (15) whose front side wall is an electromagnet is slidably arranged inside the slide rail (14).

7. The automatic tube drawing equipment for packaging hose according to claim 1, characterized in that: The auxiliary mechanism (5) comprises a rectangular plate (51) arranged on the end faces of the two right strip-shaped support plates (11) and having a circular through groove, the circular through groove being coaxial with the circular through hole one (311), the left side wall of the rectangular plate (51) being fixedly connected to the mounting shell (31) through the strip plate one (511), an adjusting column (52) whose right end protrudes beyond the rectangular plate (51) is rotatably arranged inside the circular through groove, a portion of the adjusting column (52) protruding beyond the rectangular plate (51) is fixedly provided with a plurality of teeth (521) along the circumferential direction, the right side wall of the adjusting column (52) is also provided with three arc-shaped through grooves (522) toward the left along the circumferential direction, a telescopic push rod three (53) is fixedly arranged on the right side wall of the rectangular plate (51), and a rack two (54) which is always meshed with the teeth (521) is fixedly arranged on the telescopic section of the telescopic push rod three (53).

8. The automatic tube drawing equipment for packaging hose according to claim 7, characterized in that: The auxiliary mechanism (5) further comprises a mounting plate (55) fixedly connected to the electric slider (15) via a second strip plate (56); an inner support rod (551) is slidably arranged on the left side wall of the mounting plate (55) at positions corresponding to the three arc-shaped through grooves (522); and two concentric circular through holes are provided on the mounting plate (55) and the adjusting column (52).

9. The automatic tube drawing equipment for packaging hose according to claim 1, characterized in that: The material placement mechanism (2) comprises an arc-shaped material placement rack (21), the arc-shaped material placement rack (21) is slidably arranged inside the strip-shaped slide groove (12), a hose reel is placed on the arc-shaped material placement rack (21), a reciprocating screw (23) fixedly connected to the output shaft of an external motor is also rotatably arranged inside the strip-shaped slide groove (12), and the outer wall of the reciprocating screw (23) is threadedly connected to the arc-shaped material placement rack (21).

10. The automatic tube drawing equipment for packaging hose according to claim 9, characterized in that: The arc-shaped material rack (21) is divided into a support block that slides inside the strip-shaped slide groove (12) and an annular tube that is rotatably arranged at the rear side of the support block and is used to support the hose reel. The outer wall of the annular tube is provided with a threaded groove, and the hose reel is installed on the outer wall of the annular tube by means of a threaded connection.

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