CN111185959A

CN111185959A - Fixing mechanism for plastic pipe processing

Info

Publication number: CN111185959A
Application number: CN202010183360.5A
Authority: CN
Inventors: 邱博
Original assignee: 邱博
Current assignee: Shandong Senya Information Technology Co.,Ltd.
Priority date: 2019-04-18
Filing date: 2019-04-18
Publication date: 2020-05-22
Anticipated expiration: 2039-04-18
Also published as: CN109910088A; CN111230983A; CN109910088B; CN111185959B

Abstract

The invention belongs to the technical field of PE pipes, and particularly relates to a fixing mechanism for processing a plastic pipe, which comprises a clamping unit and a fixing frame, wherein the clamping unit controls the distance between a second elastic arc plate and a first elastic arc plate to ensure that the clamping mechanism can be suitable for PE pipes with different diameters by adjusting the downward movement of the second elastic arc plate; on the other hand, the PE pipe is clamped in a wrapping manner by pushing the two ends of the first elastic arc plate and the second elastic arc plate, so that the first elastic arc plate and the second elastic arc plate are in surface contact with the PE pipe in the clamping process of the PE pipe, and the PE pipe is clamped more stably by the first elastic arc plate and the second elastic arc plate compared with the traditional point contact; the PE pipe cutting device has the advantages that the stability of the PE pipe in the cutting process is guaranteed, the two ends of the first elastic arc plate and the second elastic arc plate are bent to clamp the PE pipe, the upper pressure and the lower pressure of the PE pipe are reduced, and the PE pipe is prevented from being extruded and flattened to deform due to overlarge extrusion force.

Description

Fixing mechanism for plastic pipe processing

Technical Field

The invention belongs to the technical field of PE pipes, and particularly relates to a fixing mechanism for processing a plastic pipe.

Background

PE is polyethylene plastic, the most basic plastic, plastic bags, preservative films and the like are PE, and the PE has the excellent characteristic of resisting most of domestic and industrial chemicals; in the production of the PE pipe, the PE pipe is often required to be cut into different lengths to meet different requirements, the PE pipe is required to be clamped and fixed in the cutting process to facilitate cutting, and the conventional PE pipe clamping devices are mostly fixed in caliber and cannot clamp pipes with different calibers through one clamping device, so that the working efficiency of workers is reduced; moreover, a common clamping mechanism is clamped in a point contact type clamping manner, so that the PE pipe shakes in the cutting process, and the cutting effect is influenced; meanwhile, the point contact clamping mode easily causes the deformation of the PE pipe at the stressed part in the clamping process, and influences the normal use of the PE pipe.

The invention designs a fixing mechanism for processing a plastic pipe, which solves the problems.

Disclosure of Invention

In order to solve the defects in the prior art, the invention discloses a fixing mechanism for processing a plastic pipe, which is realized by adopting the following technical scheme.

In the description of the present invention, it should be noted that the terms "inside", "below", "upper" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention usually place when using, and are only used for convenience of description and simplification of description, but do not indicate or imply that the devices or elements indicated must have a specific orientation, be constructed in a specific orientation or be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

The utility model provides a fixed establishment that plastic tubing processing used which characterized in that: the clamping device comprises clamping units and a fixing frame, wherein the fixing frame consists of a supporting bottom plate and two supporting vertical plates which are symmetrically distributed and fixed on the supporting bottom plate, and the two clamping units are symmetrically arranged on the fixing frame; the function of mount is to playing fixed support effect to the clamping unit.

The clamping unit comprises an upper clamping mechanism and a lower supporting mechanism, wherein the lower supporting mechanism is arranged on the supporting base plate, and the upper clamping mechanism is arranged on one of the two supporting vertical plates; the upper clamping mechanism is matched with the lower supporting mechanism.

The lower supporting mechanism comprises a first elastic arc plate, a first driving gear, a first mounting shell, a first speed reducer, a first driving motor, a first supporting plate and a first driving gear, wherein the first mounting shell is fixedly mounted on the upper side of the supporting bottom plate; the outer arc surface of the first elastic arc plate is provided with a bulge, and the first elastic arc plate is arranged on the upper side of the first mounting shell through the bulge; the first elastic arc plate has elasticity, and the elasticity of the first elastic arc plate can ensure that the two ends of the first elastic arc plate can be pushed up by the two driving rods in the process of clamping the PE pipe, so that the inner arc surface of the first elastic arc plate can be in better contact fit with the outer circular surface of the PE pipe, and the first elastic arc plate can better clamp the PE pipe; the first driving motor is arranged on the upper side surface in the first mounting shell, the first speed reducer is arranged on the inner side of the first mounting shell through the first supporting plate, and an input shaft of the first speed reducer is connected with an output shaft of the first driving motor; first drive gear installs on the output shaft of first reduction gear, and first drive gear is under first driving motor's drive, through the first elasticity arc board both sides upward swing of transmission control, presss from both sides tightly the PE pipe.

The upper clamping mechanism comprises a second driving gear, a second mounting shell, a second elastic arc plate, a second support plate, a third support plate, a second speed reducer, a second driving motor, a limiting mechanism, a telescopic rod, an arc rubber plate and a return spring, wherein a guide square opening is formed in the lower side surface of the second mounting shell, and the second mounting shell is fixedly mounted on one of the two supporting vertical plates; the telescopic rod is composed of a telescopic outer sleeve and a telescopic inner rod, and the telescopic outer sleeve is supported and installed in the second installation shell through the telescopic rod; a return spring is arranged between the telescopic outer sleeve and the telescopic inner rod; the outer arc surface of the second elastic arc plate is provided with a bulge, the second elastic arc plate is connected with the lower end of the telescopic inner rod through the bulge, and the bulge is matched with a guide square opening formed in the second mounting shell; the second elastic arc plate has elasticity, and the elasticity of the second elastic arc plate can ensure that the two ends of the second elastic arc plate can be pushed downwards by the two corresponding driving rods in the process of clamping the PE pipe by the first elastic arc plate and the second elastic arc plate, so that the two ends of the second elastic arc plate are bent downwards, and the inner arc surface of the second elastic arc plate can be in better contact fit with the outer arc surface of the PE pipe, so that the PE pipe can be better clamped by the second elastic arc plate; the second driving motor is installed in the second installation shell through a second support plate, the second speed reducer is installed on the inner side of the second installation shell through a third support plate, and an input shaft of the second speed reducer is connected with an output shaft of the second driving motor; the second driving gear is arranged on an output shaft of the second speed reducer and is driven by a second driving motor to control two sides of the second elastic arc plate to swing downwards through transmission so as to clamp the PE pipe; an arc-shaped rubber plate is arranged on the lower side of the second elastic arc plate; the arc-shaped rubber plate has the function of increasing the friction with the PE pipe, so that the PE pipe becomes more stable after being clamped tightly; and a limiting mechanism for limiting the middle position of the second elastic arc plate is arranged on one side of the second mounting shell.

As a further improvement of the technology, the upper side of the first mounting shell is provided with two symmetrical first sliding chutes; the sliding groove is used for providing a transverse moving space for the driving rod in the transverse moving process relative to the pushing block; two symmetrical T-shaped sliding grooves are formed in the outer arc surface of the first elastic arc plate; the first driving rack is supported and installed in the first installation shell through the first rack, and the first driving rack is meshed with the first driving gear; the first push plate is arranged on the upper side of the first driving rack; the upper side surface of each first pushing block is provided with a driving inclined plane groove, and the two first pushing blocks are symmetrically arranged at two ends of the upper side of each first pushing plate; the first driving gear rotates to drive the first driving rack to move upwards, and the first driving rack moves upwards to push the two first push blocks to move upwards through the first push plate.

The two first push blocks are connected with the first elastic arc plate in the same structure, and for any one of the first push blocks, the triangular slide block is arranged on the first push block in a sliding fit manner and cannot be separated from the first push block; the inclined plane on the triangular sliding block is matched with the inclined plane in the groove of the driving inclined plane on the first pushing block; the first push block can only vertically move upwards under the driving of the first push plate, and in order to prevent the first push block from interfering with the triangular slide block in the vertical direction in the upward movement process, the driving inclined plane groove is designed, and the inclined plane on the driving inclined plane groove is matched with the inclined plane on the triangular slide block, so that the triangular slide block transversely moves along the corresponding inclined plane relative to the first push block in the vertical upward movement process of the first push block, and cannot interfere with the first push block; a buffer spring which cannot be bent is arranged between the triangular sliding block and the driving inclined plane groove; the buffer spring plays a role in resetting the triangular sliding block; the lower end of the driving rod is arranged on the upper side of the triangular sliding block, and the upper end of the driving rod is fixedly provided with a rolling shaft; the rolling shaft is in sliding fit with a T-shaped arc groove formed in the first elastic arc plate; the roller bearing can promote first elasticity arc board rebound on the one hand, and on the other hand can prevent through the sliding fit of roller bearing and T shape arc groove that the triangle slider can not take place to interfere with first elasticity arc board when relative first ejector pad sideslip.

The buffer spring is not bent in the process of being compressed.

As a further improvement of the technology, two sides of the driving inclined plane groove formed on the first push block are symmetrically provided with two guide grooves, two sides of the triangular slide block are symmetrically provided with two guide blocks, the triangular slide block is arranged on the first push block through the matching of the two guide blocks and the two guide grooves, and the guide blocks and the guide grooves bring a guide effect to the triangular slide block; the inclination angles between the two guide grooves and the lower side surface of the first push block are the same as the inclination angle between the inclined plane of the driving inclined plane groove and the lower side surface of the first push block; the triangular sliding block is ensured not to interfere with the first push block in the process of moving transversely relative to the first push block.

As a further improvement of the technology, the above alternative scheme as that the roller is fixedly installed on the driving rod is that the roller is installed on the driving rod through a shaft sleeve, the shaft sleeve and the driving rod are fixedly installed, and the roller is installed on the shaft sleeve through a bearing; the rolling shaft is matched with a T-shaped arc groove formed in the first elastic arc plate in a rolling way; the friction between the rolling shaft and the T-shaped arc groove can be reduced through the rolling fit, and the triangular sliding block can be guaranteed to move transversely relative to the first push block smoothly.

As the further improvement of this technique, four division boards that prevent buffer spring and bend are installed in above-mentioned buffer spring's the outside, and the one end fixed mounting of four division boards is on the triangle slider, and the other end of four division boards passes first ejector pad and is located the first ejector pad outside, and the effect of division board prevents that buffer spring from bending, influences the normal reset of triangle slider.

As a further improvement of the technology, the lower side of the second mounting shell is provided with two symmetrical second sliding chutes; two symmetrical T-shaped sliding grooves are formed in the outer arc surface of the second elastic arc plate; the second driving rack is supported and installed in the second installation shell through the second rack, and the second driving rack is meshed with the second driving gear; one end of the U-shaped connecting plate, which is back to the U-shaped opening, is arranged on the lower side of the second driving rack; the second push plate is arranged on the lower side of the U-shaped connecting plate; the upper side surfaces of the second push blocks are provided with driving inclined plane grooves, and the two second push blocks are symmetrically arranged at two ends of the lower side of the second push plate; the connection mode between the two second push blocks and the second elastic arc plate is the same as the connection mode between the two first push blocks and the first elastic arc plate.

The replacement mode as the mounting mode of the reset spring on the telescopic rod is that the reset spring is mounted between the second push plate and the second elastic arc plate, and the reset spring is nested outside the telescopic rod.

As a further improvement of the technology, the second push plate is provided with a square guide opening avoiding the telescopic outer sleeve.

As a further improvement of the technology, the inner side of the telescopic outer sleeve is provided with two symmetrical square guide grooves, two sides of the upper end of the telescopic inner rod are symmetrically provided with two square guide blocks, and the upper end of the telescopic inner rod is arranged in the telescopic outer sleeve through the matching of the two square guide blocks and the square guide grooves.

As a further improvement of this technique, the above-mentioned buffer spring is always in a compressed state.

As a further improvement of the technology, the limiting mechanism comprises a limiting plate, a limiting rod, a clamping plate, an L-shaped limiting plate, an extrusion spring, a limiting installation shell, a trigger spring, a clamping groove, a trapezoidal sliding block, a trapezoidal sliding groove, an installation sliding plate and a rubber pad, wherein the limiting plate is installed on the side surface of the middle position of the second elastic arc plate; a plurality of clamping grooves are uniformly formed in the clamping plate from top to bottom, two T-shaped sliding grooves are symmetrically formed in the clamping plate, and the clamping plate is arranged on one side of the second mounting shell; two T-shaped sliding blocks are symmetrically arranged on one side of the L-shaped limiting plate, and the L-shaped limiting plate is arranged on one side of the clamping plate through the matching of the two T-shaped sliding blocks and the two T-shaped sliding grooves; the L-shaped limiting plate can be matched with the T-shaped sliding groove through the T-shaped sliding block and move up and down relative to the clamping plate; a transverse plate of the L-shaped limiting plate faces the second mounting shell, and an extrusion spring is arranged between the transverse plate on the L-shaped limiting plate and the lower side surface of the clamping plate; the extrusion spring has the function of resetting the L-shaped limiting plate; the limiting installation shell is installed on one side of the L-shaped limiting plate, an installation sliding plate is installed at one end of the limiting rod, and the limiting rod is installed on the limiting installation shell through the matching of the installation sliding plate and the limiting installation shell; the mounting sliding plate can prevent the limiting rod from separating from the limiting mounting shell on one hand, and can extrude the trigger spring in sliding on the other hand, so that the trigger spring has restoring force for resetting the limiting rod; one end of the limiting rod penetrates through one side of the limiting installation shell to be matched with the clamping groove in the clamping plate through the L-shaped limiting plate, and the other end of the limiting rod penetrates through the other side of the limiting installation shell to be located on the outer side of the limiting installation shell; a trigger spring is arranged between the mounting sliding plate and one side surface of the limiting mounting shell away from the L-shaped limiting plate; the limiting rod has the effects that the L-shaped limiting plate can be static relative to the second mounting shell through the matching of the limiting rod and the clamping groove on the clamping plate, when the second elastic arc plate moves downwards, the limiting plate mounted on the second elastic arc plate can be in a position corresponding to the transverse plate foundation of the L-shaped limiting plate, and the L-shaped limiting plate can limit the second elastic arc plate; a rubber pad is arranged at the lower side of the L-shaped limiting plate; the rubber pad has the effects that after the L-shaped limiting plate is contacted with the PE pipe in the downward moving process, one end, matched with the clamping groove, of the limiting rod is just moved downwards to be contacted with the side face between two adjacent clamping grooves on the clamping plate, the limiting plate cannot be matched with the clamping groove on the clamping plate, the L-shaped limiting plate is continuously pulled downwards at the moment, so that the rubber pad is compressed, and the limiting rod is matched with the clamping groove on the clamping plate; the limiting rod is limited by the clamping groove on the clamping plate.

The clamping grooves distributed on the clamping plates are distributed more densely as possible, but the cutting plates between two adjacent clamping grooves can bear the downward pressure of the limiting rods.

The limiting mechanism designed by the invention is of an independent structure, can be detached from the upper clamping mechanism, and has the advantage of convenient replacement.

Compared with the traditional PE pipe technology, the clamping device designed by the invention can be used for adapting to PE pipes with different diameters by adjusting the downward movement of the second elastic arc plate and controlling the distance between the second elastic arc plate and the first elastic arc plate, so that the clamping mechanism can be suitable for the PE pipes with different diameters; on the other hand, the PE pipe is clamped in a wrapping manner by pushing the two ends of the first elastic arc plate and the second elastic arc plate, so that the first elastic arc plate and the second elastic arc plate are in surface contact with the PE pipe in the clamping process of the PE pipe, and the PE pipe is clamped more stably by the first elastic arc plate and the second elastic arc plate compared with the traditional point contact; the PE pipe cutting device has the advantages that the stability of the PE pipe in the cutting process is guaranteed, the two ends of the first elastic arc plate and the second elastic arc plate are bent to clamp the PE pipe, the upper pressure and the lower pressure of the PE pipe are reduced, and the phenomenon that the PE pipe is extruded and flattened to deform due to overlarge extrusion force and the influence on the normal use of the PE pipe is avoided.

Drawings

Fig. 1 is an external view of an entire part.

Fig. 2 is a schematic view of the overall component distribution.

Fig. 3 is a schematic view of the structure of the fixing frame.

Fig. 4 is a schematic plan view of the structure of the clamping unit.

Fig. 5 is a structural distribution schematic diagram of the clamping units.

Fig. 6 is a schematic structural view of the lower support mechanism.

Fig. 7 is a schematic plan view of the lower support mechanism.

Fig. 8 is a structural schematic view of the first mounting case.

Fig. 9 is a schematic distribution diagram of the internal structure of the first mounting shell.

Fig. 10 is a schematic view of the first drive gear installation.

Figure 11 is a first push plate installation schematic.

Fig. 12 is a schematic view of the connection of the first elastic arc plate and the first push block.

Fig. 13 is a drive rod mounting schematic.

Fig. 14 is a schematic view of a first elastic arc plate structure.

Fig. 15 is a schematic structural view of the first push block.

Fig. 16 is a roller mounting schematic.

Fig. 17 is a schematic plan view of the upper clamping mechanism.

Fig. 18 is a schematic structural view of the upper clamping mechanism.

Fig. 19 is a structural schematic view of a second mounting housing.

Fig. 20 is a schematic view of the distribution of the internal structure of the second mounting case.

Fig. 21 is a second drive gear installation schematic.

Figure 22 is a second push plate mounting schematic.

Figure 23 is a schematic view of the telescoping pole installation.

Fig. 24 is a schematic view of the connection of the second elastic arc plate and the second push block.

Fig. 25 is a schematic view of the telescopic rod structure.

Fig. 26 is a schematic view of the installation of the stopper plate.

Fig. 27 is a schematic view of the stop mechanism installation.

Fig. 28 is a schematic structural view of the limiting mechanism.

Fig. 29 is a schematic view of the installation of the stopper rod.

Figure 30 is a card mounting schematic.

Number designation in the figures: 1. a clamping unit; 2. a fixed mount; 3. a support vertical plate; 4. a support base plate; 5. an upper clamping mechanism; 6. a lower support mechanism; 7. a first elastic arc plate; 8. a first drive gear; 9. a drive rod; 10. a first drive rack; 11. a first mounting case; 12. a first chute; 13. a first push block; 14. a first rack support; 15. a first decelerator; 16. a first drive motor; 17. a first support plate; 18. a first push plate; 19. a triangular slider; 20. a buffer spring; 21. a roller; 22. a T-shaped chute; 23. a guide groove; 24. driving the inclined plane groove; 25. a guide block; 26. a second drive rack; 27. a second drive gear; 28. a second mounting case; 29. a second elastic arc plate; 30. guiding the square opening; 31. a second chute; 32. a second rack support; 33. the telescopic rod supports; 34. a second support plate; 35. a third support plate; 36. a second decelerator; 37. a second drive motor; 38. a U-shaped connecting plate; 39. a square guide port; 40. a second push plate; 42. a limiting mechanism; 43. a telescopic rod; 44. a return spring; 45. a second push block; 46. an arc-shaped rubber plate; 47. a telescopic outer sleeve; 48. a limiting plate; 49. a limiting rod; 50. clamping a plate; 51. an L-shaped limiting plate; 52. a compression spring; 53. a limiting installation shell; 54. a trigger spring; 55. a card slot; 56. a telescopic inner rod; 57. a trapezoidal slider; 58. a square guide groove; 59. a square guide block; 60. a trapezoidal chute; 61. mounting a sliding plate; 62. and (7) a rubber pad.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples or figures are illustrative of the present invention and are not intended to limit the scope of the present invention.

As shown in fig. 1 and 2, the clamping device comprises clamping units 1 and a fixed frame 2, wherein as shown in fig. 3, the fixed frame 2 is composed of a supporting base plate 4 and two symmetrically distributed supporting vertical plates 3 fixed on the supporting base plate 4, and as shown in fig. 1, the two clamping units 1 are symmetrically installed on the fixed frame 2; the fixing frame 2 is used for fixing and supporting the clamping unit 1.

As shown in fig. 4 and 5, the clamping unit 1 comprises an upper clamping mechanism 5 and a lower supporting mechanism 6, wherein as shown in fig. 1, the lower supporting mechanism 6 is mounted on a supporting base plate 4, and the upper clamping mechanism 5 is mounted on one of two supporting risers 3; the upper clamping mechanism 5 cooperates with the lower support mechanism 6.

As shown in fig. 6 and 7, the lower support mechanism 6 includes a first elastic arc plate 7, a first driving gear 8, a first mounting shell 11, a first speed reducer 15, a first driving motor 16, a first support plate 17, and a first driving gear 8, wherein as shown in fig. 1, the first mounting shell 11 is fixedly mounted on the upper side of the support base plate 4; as shown in fig. 14, the first elastic arc plate 7 has a protrusion on its outer arc surface, and as shown in fig. 6, the first elastic arc plate 7 is mounted on the upper side of the first mounting case 11 by the protrusion; the first elastic arc plate 7 has elasticity, and the elasticity of the first elastic arc plate 7 can ensure that the two ends of the first elastic arc plate 7 can be pushed up by the two driving rods 9 in the process of clamping the PE pipe by the first elastic arc plate 7, so that the inner arc surface of the first elastic arc plate 7 can be in better contact fit with the outer arc surface of the PE pipe, and the PE pipe can be better clamped by the first elastic arc plate 7; as shown in fig. 6, the first driving motor 16 is installed on the inner upper side surface of the first installation case 11, the first decelerator 15 is installed inside the first installation case 11 through the first support plate 17, and as shown in fig. 10, the input shaft of the first decelerator 15 is connected to the output shaft of the first driving motor 16; the first driving gear 8 is mounted on the output shaft of the first speed reducer 15, and as shown in fig. 9, the first driving gear 8 is driven by the first driving motor 16 to control the two sides of the first elastic arc plate 7 to swing upwards through transmission, so as to clamp the PE pipe.

As shown in fig. 17 and 18, the upper clamping mechanism 5 includes a second driving gear 27, a second mounting shell 28, a second elastic arc plate 29, a second supporting plate 34, a third supporting plate 35, a second speed reducer 36, a second driving motor 37, a limiting mechanism 42, a telescopic rod 43, an arc-shaped rubber plate 46, and a return spring 44, wherein as shown in fig. 19, a guiding square opening 30 is formed on the lower side surface of the second mounting shell 28, and as shown in fig. 1, the second mounting shell 28 is fixedly mounted on one of the two supporting risers 3; as shown in fig. 25, the telescopic rod 43 comprises a telescopic outer sleeve 47 and a telescopic inner rod 56, wherein the telescopic outer sleeve 47 is installed in the second installation shell 28 through the telescopic rod support 33; a return spring 44 is arranged between the telescopic outer sleeve 47 and the telescopic inner rod 56; as shown in fig. 23, the second elastic arc plate 29 has a protrusion on its outer arc surface, through which the second elastic arc plate 29 is connected to the lower end of the telescopic inner rod 56, and the protrusion is matched with the guiding square opening 30 opened on the second mounting shell 28; the second elastic arc plate 29 has elasticity, and the elasticity of the second elastic arc plate 29 can ensure that the two ends of the second elastic arc plate 29 can be pushed downwards by the two corresponding driving rods 9 in the process of clamping the PE pipe by the first elastic arc plate and the second elastic arc plate, so that the two ends of the second elastic arc plate 29 are bent downwards, the inner arc surface of the second elastic arc plate 29 can be in better contact fit with the outer circular surface of the PE pipe, and the second elastic arc plate 29 can better clamp the PE pipe; as shown in fig. 17, the second driving motor 37 is mounted in the second mounting case 28 through the second support plate 34, the second decelerator 36 is mounted inside the second mounting case 28 through the third support plate 35, and as shown in fig. 21, an input shaft of the second decelerator 36 is connected to an output shaft of the second driving motor 37; the second driving gear 27 is mounted on the output shaft of the second reducer 36, and as shown in fig. 20, the second driving gear 27 is driven by the second driving motor 37 to control the two sides of the second elastic arc plate 29 to swing downwards through transmission, so as to clamp the PE pipe; as shown in fig. 20, an arc-shaped rubber plate 46 is mounted on the lower side of the second elastic arc plate 29; the arc-shaped rubber plate 46 is used for increasing friction with the PE pipe, so that the PE pipe becomes more stable after being clamped; as shown in fig. 18, a stopper 42 for stopping the middle position of the second elastic arc plate 29 is mounted on the second mounting case 28.

In summary, the following steps:

the beneficial effects of the design of the invention are as follows: on one hand, the clamping device controls the distance between the second elastic arc plate 29 and the first elastic arc plate 7 to adapt to PE pipes with different diameters by adjusting the downward movement of the second elastic arc plate 29, so that the clamping mechanism can be suitable for the PE pipes with different diameters; on the other hand, the PE pipe is clamped in a wrapping manner by pushing the two ends of the first elastic arc plate 7 and the second elastic arc plate 29, so that the first elastic arc plate 7, the second elastic arc plate 29 and the PE pipe are in surface contact in the clamping process of the PE pipe, and the clamping of the first elastic arc plate 7 and the second elastic arc plate 29 on the PE pipe is more stable compared with the traditional point contact; the stability of the PE pipe in the cutting process is guaranteed, the two ends of the first elastic arc plate 7 and the second elastic arc plate 29 are bent to clamp the PE pipe, the upper pressure and the lower pressure of the PE pipe are reduced, and the phenomenon that the PE pipe is squeezed to be flat and further deformed due to overlarge extrusion force and the normal use of the PE pipe is influenced is avoided.

As shown in fig. 8, two symmetrical first sliding grooves 12 are formed on the upper side of the first mounting housing 11; the sliding groove is used for providing a transverse moving space for the driving rod 9 in the transverse moving process relative to the push block; as shown in fig. 14, two symmetrical T-shaped sliding grooves 22 are formed on the outer arc surface of the first elastic arc plate 7; as shown in fig. 6 and 11, the first driving rack 10 is mounted in the first mounting case 11 through the first rack support 14, and as shown in fig. 9, the first driving rack 10 is engaged with the first driving gear 8; as shown in fig. 11, the first push plate 18 is mounted on the upper side of the first drive rack 10; as shown in fig. 15, the upper side surface of the first pushing block 13 is provided with a driving inclined plane groove 24, as shown in fig. 12 and 13, two first pushing blocks 13 are symmetrically arranged at two ends of the upper side of the first pushing plate 18; the first driving gear 8 rotates to drive the first driving rack 10 to move upwards, and the first driving rack 10 moves upwards to push the two first push blocks 13 to move upwards through the first push plate 18.

The two first push blocks 13 are connected with the first elastic arc plate 7 in the same structure, and as for any one of the first push blocks 13, as shown in fig. 13, the triangular slide block 19 is installed on the first push block 13 in a sliding fit manner, and the triangular slide block 19 cannot be separated from the first push block 13; the inclined plane on the triangular sliding block 19 is matched with the inclined plane in the driving inclined plane groove 24 on the first push block 13; because the first push block 13 can only move vertically upwards under the driving of the first push plate 18, and in order to prevent the first push block 13 from interfering with the triangular slide block 19 in the vertical direction in the upward movement process, the driving inclined plane groove 24 is designed in the invention, and the inclined plane on the driving inclined plane groove 24 is matched with the inclined plane on the triangular slide block 19, so that the triangular slide block 19 moves transversely along the corresponding inclined plane relative to the first push block 13 in the vertical upward movement process of the first push block 13, and cannot interfere with the first push block 13; as shown in fig. 12, a buffer spring 20 that does not bend is mounted between the triangular slider 19 and the driving slope groove 24; the buffer spring 20 plays a role in resetting the triangular sliding block 19; as shown in fig. 16, the lower end of the driving rod 9 is mounted on the upper side of the triangular slider 19, and the upper end of the driving rod 9 is fixedly mounted with a roller 21; the rolling shaft 21 is in sliding fit with a T-shaped arc groove formed on the first elastic arc plate 7; the roller 21 can push the first elastic arc plate 7 to move upwards, and on the other hand, the sliding fit between the roller 21 and the T-shaped arc groove can prevent the triangular slider 19 from interfering with the first elastic arc plate 7 when traversing relative to the first push block 13.

The buffer spring 20 is not bent during the compression process.

As shown in fig. 15, two guide grooves 23 are symmetrically formed on two sides of the driving inclined groove 24 formed on the first push block 13, as shown in fig. 16, two guide blocks 25 are symmetrically installed on two sides of the triangular slider 19, as shown in fig. 13, the triangular slider 19 is installed on the first push block 13 by the cooperation of the two guide blocks 25 and the two guide grooves 23, and the guide blocks 25 and the guide grooves 23 bring a guiding effect to the triangular slider 19; the inclination angle between the two guide grooves 23 and the lower side surface of the first push block 13 is the same as the inclination angle between the inclined surface of the driving inclined surface groove 24 and the lower side surface of the first push block 13; the triangular sliding block 19 is ensured not to interfere with the first push block 13 in the process of moving transversely relative to the first push block 13.

As shown in fig. 16, the above-mentioned alternative as that the roller 21 is fixedly installed on the driving rod 9 is that the roller 21 is installed on the driving rod 9 through a shaft sleeve, the shaft sleeve is fixedly installed with the driving rod 9, and the roller 21 is installed on the shaft sleeve through a bearing; the rolling shaft 21 is matched with a T-shaped arc groove formed on the first elastic arc plate 7 in a rolling way; the rolling fit can reduce the friction between the rolling shaft 21 and the T-shaped arc groove, and ensure that the triangular sliding block 19 can smoothly and transversely move relative to the first push block 13.

Four isolation plates for preventing the buffer spring 20 from being bent are installed on the outer side of the buffer spring 20, one ends of the four isolation plates are fixedly installed on the triangular sliding block 19, the other ends of the four isolation plates penetrate through the first pushing block 13 and are located on the outer side of the first pushing block 13, and the isolation plates are used for preventing the buffer spring 20 from being bent and influencing the normal resetting of the triangular sliding block 19.

As shown in fig. 19, two symmetrical second sliding grooves 31 are formed on the lower side of the second mounting shell 28; as shown in fig. 24, two symmetrical T-shaped sliding grooves 22 are formed on the outer arc surface of the second elastic arc plate 29; a second drive rack 26 is mounted in the second mounting housing 28 by a second rack support 32, the second drive rack 26 being in meshing engagement with the second drive gear 27; one end of the U-shaped connecting plate 38, which is back to the U-shaped opening, is arranged at the lower side of the second driving rack 26; the second push plate 40 is mounted on the lower side of the U-shaped connecting plate 38; the upper side surface of the second push block 45 is provided with a driving inclined plane groove 24, and the two second push blocks 45 are symmetrically arranged at two ends of the lower side of the second push plate 40; the two second pushing blocks 45 are connected with the second elastic arc plate 29 in the same way as the two first pushing blocks 13 are connected with the first elastic arc plate 7.

As shown in fig. 23 and 24, an alternative way to mount the return spring 44 on the telescopic rod 43 is to mount the return spring 44 between the second push plate 40 and the second elastic arc plate 29, and the return spring 44 is nested outside the telescopic rod 43.

As shown in fig. 22, the second push plate 40 is provided with a square guide opening 39 which avoids the telescopic housing 47.

As shown in fig. 25, two symmetrical square guide grooves 58 are formed inside the telescopic outer sleeve 47, two square guide blocks 59 are symmetrically installed on both sides of the upper end of the telescopic inner rod 56, and the upper end of the telescopic inner rod 56 is installed inside the telescopic outer sleeve 47 through the cooperation of the two square guide blocks 59 and the square guide grooves 58.

The buffer spring 20 is always in a compressed state.

As shown in fig. 28 and 29, the limiting mechanism 42 includes a limiting plate 48, a limiting rod 49, a clamping plate 50, an L-shaped limiting plate 51, an extruding spring 52, a limiting mounting shell 53, a triggering spring 54, a clamping groove 55, a trapezoidal sliding block 57, a trapezoidal sliding groove 60, a mounting sliding plate 61, and a rubber pad 62, wherein as shown in fig. 26, the limiting plate 48 is mounted on the side surface of the middle position of the second elastic arc plate 29; as shown in fig. 30, a plurality of slots 55 are uniformly formed in the chucking plate 50 from top to bottom, two T-shaped sliding grooves 22 are symmetrically formed in the chucking plate 50, and as shown in fig. 27, the chucking plate 50 is mounted on one side of the second mounting case 28; as shown in fig. 30, two T-shaped sliders are symmetrically installed on one side of the L-shaped limiting plate 51, and the L-shaped limiting plate 51 is installed on one side of the clamping plate 50 through the cooperation of the two T-shaped sliders and the two T-shaped sliding grooves 22; the L-shaped limiting plate 51 can be matched with the T-shaped sliding groove 22 through the T-shaped sliding block to move up and down relative to the clamping plate 50; the transverse plate of the L-shaped limiting plate 51 faces the second mounting shell 28, and as shown in fig. 28, a pressing spring 52 is mounted between the transverse plate of the L-shaped limiting plate 51 and the lower side surface of the clamping plate 50; the extrusion spring 52 has the function of resetting the L-shaped limit plate 51; as shown in fig. 29, the limit mounting shell 53 is mounted on one side of the L-shaped limit plate 51, a mounting slide plate 61 is mounted on one end of the limit rod 49, and the limit rod 49 is mounted on the limit mounting shell 53 through the cooperation of the mounting slide plate 61 and the limit mounting shell 53; the mounting slide plate 61 can prevent the limiting rod 49 from being separated from the limiting mounting shell 53 on one hand, and the mounting slide plate 61 can press the trigger spring 54 in sliding so that the trigger spring 54 has restoring force for restoring the limiting rod 49; one end of the limiting rod 49 penetrates through one side of the limiting installation shell 53 and the L-shaped limiting plate 51 to be matched with the clamping groove 55 on the clamping plate 50, and the other end of the limiting rod 49 penetrates through the other side of the limiting installation shell 53 to be positioned outside the limiting installation shell 53; a trigger spring 54 is arranged between the mounting sliding plate 61 and one side surface of the limiting mounting shell 53 away from the L-shaped limiting plate 51; the limiting rod 49 has the effect that the L-shaped limiting plate 51 can be stationary relative to the second mounting shell 28 through the matching of the limiting rod 49 and the clamping groove 55 on the clamping plate 50, when the second elastic arc plate 29 moves downwards, the limiting plate 48 arranged on the second elastic arc plate 29 can be contacted with the transverse plate of the L-shaped limiting plate 51, and the L-shaped limiting plate 51 can limit the second elastic arc plate 29; the pressure of the contact point of the second elastic arc plate 29 and the PE pipe is ensured to be basically zero; a rubber pad 62 is arranged on the lower side of the L-shaped limiting plate 51; the rubber pad 62 has the effects that after the L-shaped limiting plate 51 is contacted with the PE pipe in the downward movement process, one end of the limiting rod 49, which is matched with the clamping groove 55 on the clamping plate 50, is just moved downwards to be contacted with the side surface between two adjacent clamping grooves 55 on the clamping plate 50, the limiting plate 48 cannot be matched with the clamping groove 55 on the clamping plate 50, at the moment, the L-shaped limiting plate 51 is continuously pulled downwards to enable the rubber pad 62 to be compressed, and the limiting rod 49 is matched with the clamping groove 55 on the clamping plate 50; the limiting rod 49 is limited by a clamping groove 55 on the clamping plate 50.

The clamping grooves 55 distributed on the clamping plate 50 are distributed more densely as possible, but it is ensured that the cutting plate between two adjacent clamping grooves 55 can bear the downward pressure of the limiting rod 49; the distribution of the notches 55 is only for better illustration of the relationship between the notches 55 and the stop rod 49.

The limiting mechanism designed by the invention is 42 independent structure, can be detached from the upper clamping mechanism 5, and has the advantage of convenient replacement.

The specific working process is as follows: when the clamping device designed by the invention is used, the PE pipe is firstly placed on the lower supporting mechanism 6; then, the L-shaped limit plate 51 is pulled downwards to enable the lower side of the L-shaped limit plate 51 to be in contact with the PE pipe, so that the limit rod 49 moves into the clamping groove 55 on the clamping plate 50, and the L-shaped limit plate 51 is fixed through the clamping plate 50 and the limit rod 49; then, the second driving motor 37 is controlled to work, the second driving motor 37 works to drive the second driving rack 26 to move downwards through the second driving gear 27, the second driving rack 26 moves downwards to drive the second elastic arc plate 29 to move downwards, and in the moving process, after the limiting plate 48 arranged on the second elastic arc plate 29 is contacted with the transverse plate of the L-shaped limiting plate 51, the first driving motor 16 is controlled to start to work; the first driving motor 16 starts to work to drive the first driving gear 8 to rotate; in this state, the first driving gear 8 and the second driving gear 27 rotate simultaneously, the first driving gear 8 and the second driving gear 27 enable the two ends of the first elastic arc plate 7 and the second elastic arc plate 29 to wrap the outer circle surface of the PE pipe in the same direction to clamp the PE pipe, and the pressure on the upper side surface and the lower side surface of the PE pipe is basically zero; cutting after clamping; in the cutting process, the first driving rack 10 and the second driving rack 26 are always driven by the first driving motor 16 and the second driving motor 37, so that the first driving rack 10 and the second driving rack 26 are kept in a static state in the process, and the clamping of the first elastic arc plate 7 and the second elastic arc plate 29 on the PE pipe cannot be influenced by reverse movement; after the cutting is finished, the first driving motor 16 and the second driving motor 37 are controlled to work reversely, so that the first elastic arc plate 7 and the second elastic arc plate 29 are separated from the PE pipe, after the limiting plate 48 on the second elastic arc plate 29 is separated from the transverse plate of the L-shaped limiting plate 51, the first driving motor 16 is stopped to work, and the second driving motor 37 continues to work to enable the second elastic arc plate 29 to recover to the initial position.

Claims

1. The utility model provides a fixed establishment that plastic tubing processing used which characterized in that: the clamping device comprises clamping units and a fixing frame, wherein the fixing frame consists of a supporting bottom plate and two supporting vertical plates which are symmetrically distributed and fixed on the supporting bottom plate, and the two clamping units are symmetrically arranged on the fixing frame;

the clamping unit comprises an upper clamping mechanism and a lower supporting mechanism, wherein the lower supporting mechanism is arranged on the supporting base plate, and the upper clamping mechanism is arranged on one of the two supporting vertical plates; the upper clamping mechanism is matched with the lower supporting mechanism;

the lower supporting mechanism comprises a first elastic arc plate, a first driving gear, a first mounting shell, a first speed reducer, a first driving motor, a first supporting plate and a first driving gear, wherein the first mounting shell is fixedly mounted on the upper side of the supporting bottom plate; the outer arc surface of the first elastic arc plate is provided with a bulge, and the first elastic arc plate is arranged on the upper side of the first mounting shell through the bulge; the first driving motor is arranged on the upper side surface in the first mounting shell, the first speed reducer is arranged on the inner side of the first mounting shell through the first supporting plate, and an input shaft of the first speed reducer is connected with an output shaft of the first driving motor; the first driving gear is arranged on an output shaft of the first speed reducer, and the first driving gear controls two sides of the first elastic arc plate to swing upwards through transmission under the driving of the first driving motor so as to clamp the PE pipe;

the upper clamping mechanism comprises a second driving gear, a second mounting shell, a second elastic arc plate, a second support plate, a third support plate, a second speed reducer, a second driving motor, a limiting mechanism, a telescopic rod, an arc rubber plate and a return spring, wherein a guide square opening is formed in the lower side surface of the second mounting shell, and the second mounting shell is fixedly mounted on one of the two supporting vertical plates; the telescopic rod is composed of a telescopic outer sleeve and a telescopic inner rod, and the telescopic outer sleeve is supported and installed in the second installation shell through the telescopic rod; a return spring is arranged between the telescopic outer sleeve and the telescopic inner rod; the outer arc surface of the second elastic arc plate is provided with a bulge, the second elastic arc plate is connected with the lower end of the telescopic inner rod through the bulge, and the bulge is matched with a guide square opening formed in the second mounting shell; the second driving motor is installed in the second installation shell through a second support plate, the second speed reducer is installed on the inner side of the second installation shell through a third support plate, and an input shaft of the second speed reducer is connected with an output shaft of the second driving motor; the second driving gear is arranged on an output shaft of the second speed reducer and is driven by a second driving motor to control two sides of the second elastic arc plate to swing downwards through transmission so as to clamp the PE pipe; an arc-shaped rubber plate is arranged on the lower side of the second elastic arc plate; a limiting mechanism for limiting the middle position of the second elastic arc plate is arranged on one side of the second mounting shell;

the upper side of the first mounting shell is provided with two symmetrical first sliding chutes; two symmetrical T-shaped sliding grooves are formed in the outer arc surface of the first elastic arc plate; the first driving rack is supported and installed in the first installation shell through the first rack, and the first driving rack is meshed with the first driving gear; the first push plate is arranged on the upper side of the first driving rack; the upper side surface of each first pushing block is provided with a driving inclined plane groove, and the two first pushing blocks are symmetrically arranged at two ends of the upper side of each first pushing plate;

the two first push blocks are connected with the first elastic arc plate in the same structure, and for any one of the first push blocks, the triangular slide block is arranged on the first push block in a sliding fit manner and cannot be separated from the first push block; the inclined plane on the triangular sliding block is matched with the inclined plane in the groove of the driving inclined plane on the first pushing block; a buffer spring which cannot be bent is arranged between the triangular sliding block and the driving inclined plane groove; the lower end of the driving rod is arranged on the upper side of the triangular sliding block, and the upper end of the driving rod is fixedly provided with a rolling shaft; the rolling shaft is in sliding fit with a T-shaped arc groove formed in the first elastic arc plate;

the buffer spring is not bent in the process of being compressed;

the limiting mechanism comprises a limiting plate, a limiting rod, a clamping plate, an L-shaped limiting plate, an extrusion spring, a limiting installation shell, a trigger spring, a clamping groove, a trapezoidal sliding block, a trapezoidal sliding groove, an installation sliding plate and a rubber pad, wherein the limiting plate is installed on the side surface of the middle position of the second elastic arc plate; a plurality of clamping grooves are uniformly formed in the clamping plate from top to bottom, two T-shaped sliding grooves are symmetrically formed in the clamping plate, and the clamping plate is arranged on one side of the second mounting shell; two T-shaped sliding blocks are symmetrically arranged on one side of the L-shaped limiting plate, and the L-shaped limiting plate is arranged on one side of the clamping plate through the matching of the two T-shaped sliding blocks and the two T-shaped sliding grooves; a transverse plate of the L-shaped limiting plate faces the second mounting shell, and an extrusion spring is arranged between the transverse plate on the L-shaped limiting plate and the lower side surface of the clamping plate; the limiting installation shell is installed on one side of the L-shaped limiting plate, an installation sliding plate is installed at one end of the limiting rod, and the limiting rod is installed on the limiting installation shell through the matching of the installation sliding plate and the limiting installation shell; one end of the limiting rod penetrates through one side of the limiting installation shell to be matched with the clamping groove in the clamping plate through the L-shaped limiting plate, and the other end of the limiting rod penetrates through the other side of the limiting installation shell to be located on the outer side of the limiting installation shell; a trigger spring is arranged between the mounting sliding plate and one side surface of the limiting mounting shell away from the L-shaped limiting plate; and a rubber pad is arranged on the lower side of the L-shaped limiting plate.

2. A fastening mechanism for use in the manufacture of plastic pipe according to claim 1, wherein: two guide grooves are symmetrically formed in two sides of the driving inclined plane groove formed in the first pushing block, two guide blocks are symmetrically arranged on two sides of the triangular sliding block, the triangular sliding block is arranged on the first pushing block through the matching of the two guide blocks and the two guide grooves, and the inclination angle between the two guide grooves and the lower side surface of the first pushing block is the same as the inclination angle between the inclined plane of the driving inclined plane groove and the lower side surface of the first pushing block.

3. A fastening mechanism for use in the manufacture of plastic pipe according to claim 1, wherein: the above alternative scheme for fixedly mounting the roller on the driving rod is that the roller is mounted on the driving rod through a shaft sleeve, the shaft sleeve and the driving rod are fixedly mounted, and the roller is mounted on the shaft sleeve through a bearing; the rolling shaft is matched with the T-shaped arc groove formed on the first elastic arc plate in a rolling way.

4. A fastening mechanism for use in the manufacture of plastic pipe according to claim 1, wherein: four isolation plates for preventing the buffer spring from being bent are installed on the outer side of the buffer spring, one ends of the four isolation plates are fixedly installed on the triangular sliding block, and the other ends of the four isolation plates penetrate through the first push block and are located on the outer side of the first push block.

5. A fastening mechanism for use in the manufacture of plastic pipe according to claim 1, wherein: the lower side of the second mounting shell is provided with two symmetrical second sliding chutes; two symmetrical T-shaped sliding grooves are formed in the outer arc surface of the second elastic arc plate; the second driving rack is supported and installed in the second installation shell through the second rack, and the second driving rack is meshed with the second driving gear; one end of the U-shaped connecting plate, which is back to the U-shaped opening, is arranged on the lower side of the second driving rack; the second push plate is arranged on the lower side of the U-shaped connecting plate; the upper side surfaces of the second push blocks are provided with driving inclined plane grooves, and the two second push blocks are symmetrically arranged at two ends of the lower side of the second push plate; the connection mode between the two second push blocks and the second elastic arc plate is the same as the connection mode between the two first push blocks and the first elastic arc plate;

6. A fixing mechanism for plastics pipe processing according to claim 5, wherein: the second push plate is provided with a square guide opening avoiding the telescopic outer sleeve.

7. A fastening mechanism for use in the manufacture of plastic pipe according to claim 1, wherein: the inner side of the telescopic outer sleeve is provided with two symmetrical square guide grooves, two sides of the upper end of the telescopic inner rod are symmetrically provided with two square guide blocks, and the upper end of the telescopic inner rod is arranged in the telescopic outer sleeve through the matching of the two square guide blocks and the square guide grooves.

8. A fastening mechanism for use in the manufacture of plastic pipe according to claim 1, wherein: the buffer spring is always in a compressed state.