Reducing baffle mechanism

Abstract

The utility model discloses a reducing baffle mechanism which comprises a bottom plate, a base plate, a toothed plate rotationally arranged on the base plate, a plurality of blocking pieces arranged between the base plate and the toothed plate, a lead screw driving mechanism arranged on the bottom plate and a toothed plate driving mechanism arranged on the base plate and capable of driving the toothed plate to rotate. A plurality of positioning bearings are arranged on the base plate, through holes allowing to-be-machined pipe fittings to penetrate through are formed in the center of the toothed plate and the center of the base plate, a plurality of arc-shaped positioning grooves are formed in the periphery of the through hole in the toothed plate, and each positioning bearing is arranged in the corresponding arc-shaped positioning groove in a sliding mode so as to limit the rotating stroke of the toothed plate. A through hole is formed in the base plate, a plurality of clamping grooves are formed in the base plate in the circumferential direction of the through hole at equal intervals, a first positioning pin and a second positioning pin are arranged at the two ends of each blocking piece respectively, the first positioning pins are arranged on the toothed plate, and the second positioning pins are arranged in the clamping grooves. And the device is suitable for occasions needing to pass through different pipe diameters.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe fitting production equipment, in particular to a diameter-changing baffle mechanism. Background Art

[0002] Automatic sandblasting is used to remove rust on the inner and outer surfaces of pipe fittings. It has been widely used in industrial enterprises that prepare pipelines. The high-speed projectile stream thrown by the high-efficiency sandblaster breaks the oxide scale, rust layer and other debris on the inner surface of the steel pipe to obtain a fine and bright surface, improve the tensile and compressive strength of the workpiece, increase the adhesion of the inner surface paint protection, and achieve the purpose of corrosion protection, pipe protection, and extending the service life of the steel pipe. The surface finish and roughness of the workpiece after cleaning meet the relevant standards.

[0003] As the sandblasting abrasive gushes out, a large amount of smoke and dust will be generated in the pipe. In addition to using dust removal equipment to generate negative pressure to absorb dust, a baffle needs to be set at the end of the pipe for isolation. Due to the different pipe diameters and specifications, the position of the pipe mouth is also different due to different pipe diameters. Therefore, the baffle needs to be able to adjust the size of the pipe mouth diameter and the height of the pipe on the roller frame. The existing equipment uses rubber blocks. Before processing pipes of different diameters, the blocks need to be replaced first. Different specifications of pipes require different blocks, which is time-consuming and labor-intensive, and the baffle is easily damaged. Therefore, it is necessary to develop a variable-diameter baffle mechanism with a center through-hole diameter that can be changed and a position that can be adjusted. Utility Model Content

[0004] In response to the deficiencies in the prior art, the utility model provides a variable-diameter baffle mechanism, a matching structure of a baffle group, a tooth plate and a base plate, which is suitable for the production needs of pipes with different diameters, improves the reliability of installation, reduces the labor cost and precious time required for frequent replacement of baffles, and brings great convenience to production use.

[0005] The cam body is provided with a toothed plate, and the toothed plate is provided with a toothed plate, and the toothed plate driving mechanism is provided with a toothed plate, and the toothed plate driving mechanism is provided with a toothed plate, and the toothed plate driving mechanism is provided with a toothed plate, and the toothed plate is provided with a toothed plate, and the toothed plate is provided with a toothed plate, and the toothed plate is provided with a toothed plate, and the toothed plate is provided with a toothed plate, and the toothed plate is provided with a toothed plate, and the toothed plate is provided with

[0006] In a preferred embodiment of the present invention, a plurality of positioning holes are provided at equal intervals in the circumferential direction of the through hole on the tooth plate, and the first positioning pins are clamped in the corresponding positioning holes.

[0007] In a preferred embodiment of the present invention, the through hole on the tooth plate is concentrically arranged with the through hole on the base plate.

[0008] In a preferred embodiment of the present invention, the toothed plate driving mechanism includes a first pulley and a second pulley arranged on a base plate, a synchronous belt sleeved on the first pulley and the second pulley, and a first hand wheel capable of driving the pulley to rotate, and a transmission gear is installed on the second pulley, and the transmission gear is engaged with the tooth portion on the toothed plate.

[0009] In a preferred embodiment of the present invention, it further includes a tensioning wheel assembly disposed on the base plate.

[0010] In a preferred embodiment of the present invention, the screw drive mechanism includes a second hand wheel mounted on the base plate through a fixed block, a first bevel gear connected to the second hand wheel, a ball screw arranged on the base plate, and a second bevel gear arranged on the top of the ball screw and meshing with the first bevel gear, and the base plate is connected to the screw nut on the ball screw through a connecting plate.

[0011] In a preferred embodiment of the present invention, a limit block for limiting the rising height of the base plate is provided on the bottom plate.

[0012] In a preferred embodiment of the present invention, a plurality of support bearings are provided on the base plate below the tooth plate.

[0013] In a preferred embodiment of the present invention, the baffles are stacked and the number is 20-25.

[0014] In a preferred embodiment of the present invention, a handle is provided on the bottom plate.

[0015] The beneficial effects of the present invention are as follows: the variable diameter baffle mechanism, the matching structure of the baffle group, the tooth plate and the base plate of the present invention are suitable for the needs of production of different pipe diameters, improve the reliability of installation, reduce the labor cost and precious time required for frequent replacement of baffles, and the height can be adjusted through the screw drive mechanism to adapt to the pipe mouth position of different pipe fittings, which brings great convenience to production and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work. Among them:

[0017] Figure 1 It is a structural diagram of the utility model;

[0018] Figure 2 It is a front view of the utility model;

[0019] Figure 3 It is a schematic diagram of part of the structure of the utility model;

[0020] Figure 4 This is a schematic diagram of the installation of the baffle in the present invention. DETAILED DESCRIPTION

[0021] The following is a clear and complete description of the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] See also Figure 1-4 The utility model provides a variable diameter baffle mechanism, comprising: a bottom plate 1, a base plate 2, a tooth plate 3 rotatably arranged on the base plate, a plurality of baffles 4 arranged between the base plate and the tooth plate, a screw driving mechanism arranged on the bottom plate to drive the base plate to lift and lower the movement, and a tooth plate driving mechanism arranged on the base plate to drive the tooth plate to rotate. A through hole 5 for the pipe to be processed is opened at the center position of the tooth plate and the base plate. A plurality of positioning bearings 6 are installed on the base plate above the through hole. A plurality of arc-shaped positioning grooves 7 are arranged around the through hole of the tooth plate. Each positioning bearing is slidably arranged in the corresponding arc-shaped positioning groove to limit the travel trajectory of the tooth plate rotation. In order to ensure the stability of the tooth plate installation, a plurality of support bearings 8 are arranged on the base plate below the tooth plate, which can not only provide auxiliary support for the weight of the tooth plate, but also do not affect the rotation stroke of the tooth plate.

[0023] Specifically, the baffles are stacked and the number is 20-25, which are combined to form a circular hole for the pipe to be processed to pass through. A first positioning pin 9 and a second positioning pin 10 are respectively provided at both ends of each baffle. A number of vertical slots 11 are evenly spaced in the circumferential direction of the through hole on the base plate. The first positioning pin is provided on the tooth plate, and the second positioning pin is provided in the slot. Among them, a number of positioning holes 12 are evenly spaced in the circumferential direction of the through hole on the tooth plate. The first positioning pin is clamped in the corresponding positioning hole to achieve a rotatable connection with the tooth plate. The second positioning pin is provided in the slot and reciprocates in the slot. When the tooth plate is driven to rotate, the tooth plate and the base plate rotate relative to each other, driving the 20-25 baffle groups to move, thereby forming circular holes with different radii to adapt to the production of pipes with different diameters.

[0024] Specifically, the through hole on the tooth plate is concentrically arranged with the through hole on the base plate. The tooth plate driving mechanism includes a first pulley 13 and a second pulley 14 provided on the base plate, a synchronous belt 15 sleeved on the first pulley and the second pulley, and a first handwheel 16 that can drive the pulley to rotate. A transmission gear 17 is installed on the second pulley, and the transmission gear is engaged with the tooth portion on the tooth plate. A tensioning wheel assembly 26 is also installed on the base plate to tension the synchronous belt. The first handwheel is connected to the two sets of pulleys through the synchronous belt to transmit power, and the transmission gear is engaged with the tooth plate, thereby controlling the rotation of the tooth plate.

[0025] Specifically, the screw drive mechanism includes a second handwheel 18 mounted on the base plate through a fixed block, a first bevel gear 19 mounted on the second handwheel shaft, a ball screw 20 arranged on the base plate, and a second bevel gear 21 arranged on the top of the ball screw and meshing with the first bevel gear. The second handwheel shaft is mounted on the base plate through a handwheel bearing mounting seat, and the base plate is connected to the screw nut 23 on the ball screw through a connecting plate 22. The second handwheel drives the rotation of the first bevel gear and the second bevel gear, thereby driving the rotation of the screw. The base plate connected to the screw nut can realize lifting movement, and the height can be adjusted to adapt to the pipe mouth position of different pipe fittings.

[0026] Specifically, a limit block 24 for limiting the rising height of the base plate is provided on the bottom plate, and a pull handle 25 is also provided on the bottom plate.

[0027] The beneficial effects of the present invention are: the matching structure of the baffle group, the tooth plate and the base plate is suitable for the production needs of different pipe diameters, improves the reliability of installation, reduces the labor cost and precious time required for frequent replacement of baffles, and the height can be adjusted through the screw drive mechanism to adapt to the pipe mouth position of different pipe fittings, which brings great convenience to production and use.

[0028] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A variable diameter baffle mechanism, characterized in that: include: The cam is provided with a plurality of guide rails, and the guide rails are provided with a plurality of guide rails respectively. The guide rails are provided with a plurality of guide rails respectively. The guide rails are provided with a plurality of guide rails respectively. The guide rails are provided with a plurality of guide rails respectively.

2. The variable diameter baffle mechanism according to claim 1, characterized in that: A plurality of positioning holes are provided at equal intervals in the circumferential direction of the through hole on the tooth plate, and the first positioning pins are clamped in the corresponding positioning holes.

3. The variable diameter baffle mechanism according to claim 1, characterized in that: The through hole on the tooth plate is concentrically arranged with the through hole on the base plate.

4. The variable diameter baffle mechanism according to claim 1, characterized in that: The toothed plate driving mechanism includes a first pulley and a second pulley arranged on the base plate, a synchronous belt sleeved on the first pulley and the second pulley, and a first hand wheel capable of driving the pulley to rotate. A transmission gear is installed on the second pulley, and the transmission gear is engaged with the tooth portion on the toothed plate.

5. The variable diameter baffle mechanism according to claim 4, characterized in that: The utility model also includes a tensioning wheel assembly arranged on the base plate.

6. The variable diameter baffle mechanism according to claim 1, characterized in that: The screw drive mechanism includes a second hand wheel mounted on the base plate through a fixed block, a first bevel gear connected to the second hand wheel, a ball screw arranged on the base plate, and a second bevel gear arranged on the top of the ball screw and meshing with the first bevel gear. The base plate is connected to the screw nut on the ball screw through a connecting plate.

7. The variable diameter baffle mechanism according to claim 1, characterized in that: The bottom plate is provided with a limit block for limiting the rising height of the base plate.

8. The variable diameter baffle mechanism according to claim 1, characterized in that: A plurality of supporting bearings are arranged on the base plate below the tooth plate.

9. The variable diameter baffle mechanism according to claim 1, characterized in that: The baffles are stacked and the number is 20-25.

10. The variable diameter baffle mechanism according to claim 1, characterized in that: A pull handle is provided on the bottom plate.

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