PP pipe conveying channel structure

Abstract

The utility model discloses a PP pipe conveying channel structure which is used for a PP pipe with a non-circular cross section and comprises a straight pipe portion, a channel for the PP pipe to pass through is arranged in the straight pipe portion, and the cross section of the channel is matched with the PP pipe in shape. The conveying channel structure further comprises a horn part and a sleeve fixedly connected to the outside of the necking end of the horn part, the output end of the straight pipe part is rotationally connected into the sleeve, a plurality of positioning grooves are formed in the end, close to the horn part, of the straight pipe part in the circumferential direction, the output end of the straight pipe part is fixedly connected with positioning blocks, and the positioning blocks are arranged in the positioning grooves to prevent the straight pipe part from rotating. The straight pipe part can slide in the axial direction of the sleeve, and the necking end of the horn part is provided with an avoiding groove for the positioning block to pass through at the position corresponding to the positioning groove, so that the positioning block enters and exits the positioning groove. The PP pipe conveying channel structure has the limiting and adjusting functions, and deflection of non-circular PP pipes in the channel is reduced.

Description

Technical Field

[0001] This utility model relates to the field of prism tube production technology, and in particular to a PP tube conveying channel structure. Background Technology

[0002] Existing wound structure kraft tubes, such as Figure 7 As shown, the device includes a base belt 91 and a PP tube 92 spirally wound on the base belt. The cross-section of the PP tube outside the base belt is non-circular, such as elliptical. After extrusion, the elliptical PP tube is wound onto the base belt through a conveying channel structure. When the PP tube is wound onto the base belt, it stands vertically on the base belt, that is, the long axis of the PP tube is perpendicular to the base belt.

[0003] The existing conveying channel structure is a pipe structure, forming a channel with a circular cross-section inside. The PP pipe is prone to deflection when passing through the channel. When the PP pipe leaves the channel and wraps around the bottom strip, such as... Figure 8 As shown, the PP pipe 92 is not vertically placed on the bottom strip 91, that is, the long axis of the PP pipe is not perpendicular to the bottom strip, which affects the stiffness of the PP pipe ring. Utility Model Content

[0004] To address the drawback of PP pipes easily deflecting when passing through existing conveying channel structures, this invention proposes a PP pipe conveying channel structure with limiting and adjusting functions to reduce the deflection of non-circular PP pipes in the channel.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A PP pipe conveying channel structure is provided for PP pipes with non-circular cross-sections. The conveying channel structure includes a straight pipe section with a channel for the PP pipe to pass through. The cross-section of the channel is adapted to the shape of the PP pipe. The conveying channel structure also includes a flared section and a sleeve fixedly connected to the constricted end of the flared section. The output end of the straight pipe section is rotatably connected to the sleeve. Multiple positioning grooves are provided circumferentially at the end of the straight pipe section near the flared section. A positioning block is fixedly connected to the output end of the straight pipe section and is disposed in the positioning groove to prevent the straight pipe section from rotating. The straight pipe section can slide along the axial direction of the sleeve. The constricted end of the flared section is provided with a clearance groove at the corresponding position of the positioning groove to allow the positioning block to pass through, so that the positioning block can enter and exit the positioning groove.

[0007] With the above settings, firstly, the cross-sectional shape of the channel is adapted to the shape of the PP pipe, preventing the PP pipe from deflecting when passing through the channel; secondly, the sleeve is used to support the output end of the straight pipe section, increasing the stability of the straight pipe section; thirdly, the straight pipe section can rotate, making it convenient to output PP pipes at different angles.

[0008] Furthermore, the channel has an elliptical cross-section for PP pipes with an elliptical cross-section to pass through, and an inspection port is provided on the straight pipe section, which is located at one end of the long axis of the channel cross-section.

[0009] The above setup facilitates the inspection of the PP pipe's delivery status within the channel.

[0010] Furthermore, there is a gap between the inner wall of the channel and the outer wall of the PP pipe, with a gap width of d, which is 1 mm. <d<2mm。

[0011] By implementing the above settings, the contact between the inner wall of the channel and the PP pipe is reduced, thereby reducing the forward resistance of the PP pipe.

[0012] Furthermore, the flared end of the horn section is equipped with a flange for easy installation.

[0013] The above settings facilitate the mounting of the horn section on the winding equipment.

[0014] Furthermore, there are eighteen positioning slots and positioning blocks, arranged at equal intervals along the circumference. The positioning slots and positioning blocks correspond one-to-one, and each positioning block is set in the corresponding positioning slot.

[0015] Furthermore, the end of the positioning block is flush with the output end face of the straight pipe section, and the length of the positioning block is less than the length of the positioning groove.

[0016] The above settings allow the PP pipes inside the channel to dissipate heat through the clearance grooves. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the conveyor channel structure for an embodiment.

[0018] Figure 2 An axial view of the conveyor channel structure as an example.

[0019] Figure 3 Another schematic diagram of the conveyor structure channel for an embodiment.

[0020] Figure 4 This is a schematic diagram of the straight pipe section in an embodiment.

[0021] Figure 5 This is a schematic diagram of the positioning block entering the speaker section in an embodiment.

[0022] Figure 6 This is a cross-sectional view of the PP pipe in the straight section as shown in the embodiment.

[0023] Figure 7 A cross-sectional view of an existing kraft tube.

[0024] Figure 8 This is a schematic diagram of a PP pipe being deflected and wrapped around a base strip. Detailed Implementation

[0025] The technical solution of this utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0026] like Figures 1 to 6 As shown, a PP pipe conveying channel structure is used for PP pipes with a non-circular cross-section. The conveying channel structure includes a straight pipe section 3, in which a channel 400 for the PP pipe to pass through is provided. The cross-section of the channel is adapted to the shape of the PP pipe. The conveying channel structure also includes a flared section 4 and a sleeve 5 fixedly connected to the constricted end of the flared section 4. The output end of the straight pipe section 3 is rotatably connected to the sleeve 5. A plurality of positioning grooves 6 are provided circumferentially at one end of the straight pipe section 3 near the flared section 4. A positioning block 7 is fixedly connected to the output end of the straight pipe section 3. The positioning block 7 is set in the positioning groove 6 to prevent the straight pipe section 3 from rotating. The straight pipe section 3 can slide axially along the sleeve 5. The constricted end of the flared section 4 is provided with an avoidance groove 8 at the corresponding position of the positioning groove 6 to allow the positioning block 7 to pass through, so that the positioning block 7 can enter and exit the positioning groove 6.

[0027] With the above settings, firstly, the cross-sectional shape of the channel is adapted to the shape of the PP pipe, preventing the PP pipe from deflecting when passing through the channel; secondly, the sleeve 5 is used to support the output end of the straight pipe section 3, increasing the stability of the straight pipe section 3; thirdly, the straight pipe section 3 can rotate, making it convenient to output PP pipes at different angles.

[0028] Specifically, the PP tube in this application refers to a PP tube used for spiral winding around the outside of a prism tube, which is extruded by an extruder; the cross-sectional shape of the PP tube is set according to requirements, and the conveying channel structure of this application is used for PP tubes with a non-circular cross-section, specifically PP tubes with an elliptical cross-section; after the PP tube is extruded, it moves along the straight tube section 3 to the flared section 4, with the flared end of the flared section 4 facing the bottom belt, and is installed on the winding equipment. The winding equipment rotates the bottom belt, and the PP tube passes through the straight tube section 3 and the flared section 4 successively before being wound on the bottom belt; the channel shape in the straight tube section 3 of this application is adapted to the shape of the PP tube, which can prevent the PP tube from deflecting when moving in the channel. When the PP tube is wound on the bottom belt, the PP tube can be wound upright on the bottom belt without tilting.

[0029] In the initial stage of the conveyor channel structure of this application, the positioning block 7 is located in the positioning groove 6, such as Figure 1 and Figure 3 As shown, the straight tube section 3 and the sleeve 5 cannot rotate relative to each other; that is, the straight tube section 3 is locked, so that the angle of the PP tube is fixed during winding and no deflection occurs. When the conveying channel structure of this application is installed on other winding equipment, the angle of the straight tube section 3 needs to be readjusted so that the output PP tube can stand upright on the bottom belt. During adjustment, the straight tube section 3 is pushed towards the trumpet section 4, and the positioning block 7 leaves the positioning groove 6, passes through the clearance groove 8 and enters the trumpet section 4. Figure 5As shown, rotate the straight tube section 3, adjust the angle of the long axis of the channel cross section, and make the long axis perpendicular to the bottom strip. Then push the straight tube section 3 back, and the positioning block 7 is re-embedded into the positioning groove 6 through the clearance groove 8.

[0030] As one implementation method, the cross-section of the channel is elliptical, which is used for PP pipes with elliptical cross-sections to pass through. The straight pipe section 3 is provided with an inspection port 9, which is located at one end of the long axis 200 of the channel cross-section.

[0031] The above setup facilitates the inspection of the PP pipe's delivery status within the channel.

[0032] In actual production, PP pipes with an elliptical cross-section have different colored markings on one end along their long axis. When the PP pipe passes through the straight pipe section 3, workers can see the markings through the inspection port 9 to ensure that the PP pipe has not deflected. If workers cannot see the markings through the inspection port 9, it indicates that the PP pipe has significantly deflected, and workers need to stop the machine for inspection. In this application, the inspection port 9 is specifically rectangular, with its length parallel to the direction of movement of the PP pipe. The central axis of the inspection port 9 is located on the long axis section of the channel, that is, when the PP pipe is not deflected, the markings on one side pass through the central axis of the inspection port 9.

[0033] As one implementation method, there is a gap of 300 between the inner wall of channel 400 and the outer wall of PP pipe 500, with a gap width of d, which is 1mm. <d<2mm。

[0034] By implementing the above settings, the contact between the inner wall of the channel and the PP pipe is reduced, thereby reducing the forward resistance of the PP pipe.

[0035] As one implementation method, the flared end of the horn section 4 is provided with a flange 10 for easy installation.

[0036] The above configuration makes it easy to install the horn section 4 on the winding equipment.

[0037] As one implementation method, there are eighteen positioning slots 6 and positioning blocks 7, which are arranged at equal intervals along the circumference. The positioning slots 6 and positioning blocks 7 correspond one-to-one, and each positioning block 7 is set in the corresponding positioning slot 6.

[0038] This application provides eighteen positioning grooves 6 at the end of the sleeve 5, which correspond to eighteen adjustment positions, so that the straight tube 3 can be adjusted to eighteen different angles, so that the PP tube can be wrapped upright on the base strip.

[0039] As one implementation, the end of the positioning block 7 is flush with the output end face of the straight pipe section 3, and the length of the positioning block 7 is less than the length of the positioning groove 6.

[0040] The above settings enable the PP pipe in the channel to dissipate heat through the clearance groove 8.

[0041] The conveying channel structure of this application, when conveying PP pipes, such as Figure 1 As shown, the positioning block 7 and the positioning groove 6 are abutted at the end away from the clearance groove 8. At this time, the internal space of the speaker part 4 is connected to the outside through the clearance groove 8, and the PP pipe can dissipate heat through the clearance groove 8.

[0042] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A PP pipe conveying channel structure for use with PP pipes having a non-circular cross-section, characterized in that, The conveying channel structure includes a straight pipe section, and a channel for PP pipe to pass through is provided inside the straight pipe section. The cross-section of the channel is adapted to the shape of the PP pipe. The conveying channel structure also includes a horn section and a sleeve fixedly connected to the constricted end of the horn section. The output end of the straight tube section is rotatably connected in the sleeve. The end of the straight tube section near the horn section has multiple positioning grooves arranged circumferentially. The output end of the straight tube section is fixedly connected to a positioning block. The positioning block is set in the positioning groove to prevent the straight tube section from rotating. The straight tube section can slide along the axial direction of the sleeve. The constricted end of the horn section has a clearance groove at the corresponding position of the positioning groove to allow the positioning block to pass through, so that the positioning block can enter and exit the positioning groove.

2. The PP pipe conveying channel structure according to claim 1, characterized in that, The channel has an elliptical cross-section for PP pipes with an elliptical cross-section to pass through. An inspection port is provided on the straight pipe section, and the inspection port is located at one end of the long axis of the channel cross-section.

3. The PP pipe conveying channel structure according to claim 1, characterized in that, There is a gap between the inner wall of the channel and the outer wall of the PP pipe, with a gap width of d, which is 1 mm. <d<2mm。 4. The PP pipe conveying channel structure according to claim 1, characterized in that, The flared end of the horn section is provided with a flange for easy installation.

5. The PP pipe conveying channel structure according to claim 1, characterized in that, There are eighteen positioning slots and positioning blocks, which are arranged at equal intervals along the circumference. The positioning slots and positioning blocks correspond one-to-one, and each positioning block is set in the corresponding positioning slot.

6. The PP pipe conveying channel structure according to claim 1, characterized in that, The end of the positioning block is flush with the output end face of the straight pipe section, and the length of the positioning block is less than the length of the positioning groove.

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