In-pipe core penetrating mechanism for pipe bending machine

Abstract

The utility model discloses an in-pipe core penetrating mechanism for a pipe bending machine. The in-pipe core penetrating mechanism comprises a base, a bottom plate is fixedly connected to the base, a sliding groove is formed in the bottom plate, a movable seat is connected to the sliding groove in a sliding mode, one end of the bottom plate is fixedly connected with a hydraulic rod, and the driving end of the hydraulic rod is fixedly connected to one end of the movable seat; the core penetrating assembly is arranged on the moving seat, a screw rod and an external expansion plate are arranged in the core penetrating assembly, and core penetrating in the pipe can be carried out; the core penetrating assembly comprises a screw rod, the screw rod is rotatably connected in the moving seat, one end of the screw rod is fixedly connected with a rotating wheel, and the other end of the screw rod extends out of the moving seat; and the first barrel section is rotationally arranged outside the screw rod in a sleeving mode, and a plurality of limiting rods are slidably inserted into the first barrel section in a penetrating mode. According to the utility model, through the arrangement of the core penetrating assembly, core penetrating positioning can be carried out on pipes with different inner diameters.

Description

TECHNICAL FIELD

[0001] The utility model relates to a pipe bending machine technical field, specifically a pipe inner core penetrating mechanism for pipe bending machine. BACKGROUND

[0002] In the steel pipe production or bending process, the main function of the mandrel is to support the inner diameter of the pipe, to ensure the stability and accuracy of the pipe in the bending or production process. Therefore, the diameter of the mandrel is generally slightly smaller than the inner diameter of the pipe, so as to be smoothly inserted into the pipe and play a supporting role. The specific difference range will be different according to the actual situation, but generally the diameter of the mandrel is smaller than the inner diameter of the pipe by about 0.5-1.5mm.

[0003] Although the mandrel of the pipe bending machine core penetrating mechanism does not need to be completely consistent with the inner diameter of the pipe, a certain matching relationship needs to be maintained between the two. This matching relationship is mainly affected by factors such as the diameter, wall thickness, bending radius and bending accuracy of the pipe. In the existing equipment, different mandrels of different diameters need to be replaced for pipes of different inner diameters, which is relatively cumbersome. Therefore, we propose a pipe inner core penetrating mechanism for pipe bending machine. SUMMARY

[0004] The utility model aims at providing a pipe inner core penetrating mechanism for pipe bending machine to solve the problems raised in the above background.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] A pipe inner core penetrating mechanism for pipe bending machine, comprising:

[0007] A base is fixedly connected with a bottom plate, a sliding groove is formed in the bottom plate, a moving seat is slidably connected to the sliding groove, a hydraulic rod is fixedly connected to one end of the bottom plate, and the driving end of the hydraulic rod is fixedly connected to one end of the moving seat.

[0008] A core penetrating assembly is arranged on the moving seat, a screw rod and an expanding plate are arranged in the core penetrating assembly, and the pipe can be penetrated.

[0009] Preferably, the core penetrating assembly comprises:

[0010] A screw rod is rotatably connected in the moving seat, one end of the screw rod is fixedly connected with a rotating wheel, and the other end of the screw rod extends out of the moving seat.

[0011] A first cylinder section is sleeved outside the screw rod, a plurality of limiting rods are slidably inserted in the first cylinder section, one end of each of the plurality of limiting rods is fixedly connected to one end of the moving seat, and a plurality of first rotating rods are rotatably connected outside the first cylinder section.

[0012] The second cylinder segment is sleeved outside the screw rod, and a plurality of first supporting plates are fixedly connected between the first cylinder segment and the second cylinder segment;

[0013] The third cylinder segment is arranged at the end of the screw rod, is rotationally connected with the end of the screw rod, and a plurality of folding rods are rotationally connected outside the third cylinder segment;

[0014] The fourth cylinder segment is sleeved outside the screw rod, and a plurality of second supporting plates are fixedly connected between the third cylinder segment and the fourth cylinder segment;

[0015] A plurality of expansion plates are rotationally connected between the plurality of first rotating rods and the folding rods, respectively;

[0016] A moving sleeve is threadedly sleeved outside the screw rod, a plurality of second rotating rods are rotationally connected outside the moving sleeve, and outer ends of the plurality of second rotating rods are rotationally connected inside the plurality of expansion plates, respectively.

[0017] Preferably, the plurality of first rotating rods, the folding rods and the second rotating rods are arranged around the central axis of the screw rod, and the number of the plurality of first rotating rods, the folding rods and the second rotating rods is consistent with that of the plurality of expansion plates.

[0018] Preferably, a round head is fixedly connected to the outer end of the third cylinder segment.

[0019] Preferably, there are intervals between the plurality of first supporting plates and between the plurality of second supporting plates, and the plurality of first supporting plates and the second supporting plates are arranged around the central axis of the screw rod.

[0020] Preferably, the plurality of expansion plates can be combined into a complete cylindrical shape, and the plurality of expansion plates are arranged around the central axis of the screw rod.

[0021] Preferably, a plurality of telescopic rods are fixedly connected outside the plurality of first supporting plates and the second supporting plates, and outer ends of the plurality of telescopic rods are fixedly connected to the plurality of expansion plates, respectively.

[0022] Compared with the prior art, the utility model has the beneficial effects that:

[0023] By setting the core penetrating assembly, starting the hydraulic rod, the hydraulic rod drives the moving seat to translate, drives the core penetrating assembly to translate into the pipe for positioning, when the pipe with different inner diameters needs to be positioned, the rotating wheel is rotated, the screw rod is rotated, the moving sleeve is translated, the plurality of second rotating rods are rotated, the plurality of second rotating rods drive the plurality of expansion plates to expand in and out under the support of the plurality of first rotating rods and the folding rods at two ends, so that the pipe with different inner diameters can be positioned. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is the overall structure schematic diagram of the utility model;

[0025] Figure 2 It is the local mechanism schematic diagram in the utility model;

[0026] Figure 3 It is the structure schematic diagram of the core penetrating assembly in the utility model;

[0027] Figure 4 It is the A place enlarged view of the utility model. Figure 3

[0028] In the drawing: 100, base; 110, bottom plate; 120, sliding groove; 130, moving seat; 140, hydraulic rod; 200, core penetrating assembly; 210, screw rod; 211, runner; 220, first cylinder section; 221, limiting rod; 222, first rotating rod; 230, second cylinder section; 231, first support plate; 240, third cylinder section; 241, folding rod; 250, fourth cylinder section; 251, second support plate; 260, outer expansion plate; 270, moving sleeve; 280, second rotating rod; 300, round head; 400, telescopic rod. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0030] As shown in Figures 1-4 In the embodiment, a pipe core penetrating mechanism for a pipe bending machine comprises a base 100 and a core penetrating assembly 200. The base 100 is fixedly connected with a bottom plate 110. The bottom plate 110 is provided with a sliding groove 120. The sliding groove 120 is slidably connected with a moving seat 130. One end of the bottom plate 110 is fixedly connected with a hydraulic rod 140. The driving end of the hydraulic rod 140 is fixedly connected with one end of the moving seat 130. The hydraulic rod 140 is started to drive the moving seat 130 to translate, thereby driving the core penetrating assembly 200 to translate into the pipe to be positioned.

[0031] ​The core-penetrating assembly 200 comprises a screw rod 210, a first barrel segment 220, a second barrel segment 230, a third barrel segment 240, a fourth barrel segment 250, an outward-expanding plate 260, and a moving sleeve 270. The screw rod 210 is rotationally connected in the moving seat 130. One end of the screw rod 210 is fixedly connected with a rotating wheel 211, and the other end of the screw rod 210 extends out of the moving seat 130. The first barrel segment 220 is sleeved outside the screw rod 210. A plurality of limiting rods 221 are slidingly inserted in the first barrel segment 220. One end of each of the plurality of limiting rods 221 is fixedly connected with one end of the moving seat 130. A plurality of first rotating rods 222 are rotationally connected outside the first barrel segment 220.

[0032] It should be noted that the outward-expanding plate 260 is simultaneously driven to rotate by the first rotating rod 222 when it is expanded in and out, and the plurality of second rotating rods 280 are simultaneously driven to rotate. By arranging the limiting rods 221, the first barrel segment 220 can slide outside the plurality of limiting rods 221, so as to adapt to the rotation of the first rotating rod 222 and the second rotating rod 280, that is, to adapt to the deformation of the core-penetrating assembly 200. In addition, the end of the limiting rod 221 is provided with a stop block to block the first barrel segment 220 from further sliding out and causing disengagement. In addition, the folding rod 241 can be folded, so that the folding rod is folded and stored when the outward-expanding plate 260 is expanded in and out, and an additional deformation-adapting mechanism is not required.

[0033] The second barrel segment 230 is sleeved outside the screw rod 210. A plurality of first supporting plates 231 are fixedly connected between the second barrel segment 230 and the first barrel segment 220. The third barrel segment 240 is arranged at the end of the screw rod 210. The third barrel segment 240 is rotationally connected with the end of the screw rod 210. A plurality of folding rods 241 are rotationally connected outside the third barrel segment 240. The fourth barrel segment 250 is sleeved outside the screw rod 210. A plurality of second supporting plates 251 are fixedly connected between the third barrel segment 240 and the fourth barrel segment 250. A plurality of outward-expanding plates 260 are respectively rotationally connected between the plurality of first rotating rods 222 and the folding rods 241. The moving sleeve 270 is threadedly sleeved outside the screw rod 210. A plurality of second rotating rods 280 are rotationally connected outside the moving sleeve 270. The outer ends of the plurality of second rotating rods 280 are respectively rotationally connected inside the plurality of outward-expanding plates 260.

[0034] In this embodiment, the outer end of the third barrel segment 240 is fixedly connected with a round head 300. After the core-penetrating assembly 200 is inserted into the pipe, the round head 300 can play a supporting and positioning role, so as to ensure that the pipe remains stable during bending or processing and prevent deformation or twisting.

[0035] It should be noted that the fourth cylinder segment 250 is provided with a bearing to facilitate rotation connection with the screw rod 210, while the first cylinder segment 220, the second cylinder segment 230 and the third cylinder segment 240 are not provided with bearings, and there is a gap between the first cylinder segment 220 and the screw rod 210 and between the second cylinder segment 230 and the screw rod 210, so that the first cylinder segment 220 and the second cylinder segment 230 can slide outside the screw rod 210, and in addition, the third cylinder segment 240 is not provided with a bearing to facilitate rotation connection of the third cylinder segment 240 with the end of the screw rod 210, and it should be noted that since the two ends of the core penetrating assembly 200 are supported by the limiting rods 221 and the fourth cylinder segment 250 respectively, the second cylinder segment 230 arranged at the middle part will not deviate from the axis to block the rotation of the screw rod 210.

[0036] Further, a plurality of first support plates 231 and second support plates 251 are fixedly connected with a plurality of telescopic rods 400, and the extending ends of the plurality of telescopic rods 400 are fixedly connected with a plurality of expansion plates 260, and by arranging the telescopic rods 400, the expansion plates 260 can be further supported to increase the supporting degree, and in addition, the telescopic rods 400 are provided with springs and damping structures to avoid repeated vibration, which is prior art and will not be described in detail.

[0037] Working principle: first start the hydraulic rod 140, the hydraulic rod 140 drives the moving seat 130 to translate, drives the core penetrating assembly 200 to translate into the pipe to position, when different inner diameters of pipes need to be penetrated and positioned, rotate the rotating wheel 211 to drive the screw rod 210 to rotate, the screw rod 210 drives the moving sleeve 270 to translate, and then drives a plurality of second rotating rods 280 to rotate, and then drives a plurality of expansion plates 260 to expand in and out under the support of a plurality of first rotating rods 222 and folding rods 241 at both ends, so that different inner diameters of pipes can be penetrated and positioned.

[0038] It is apparent for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and the present application can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0039] Furthermore, it should be understood that although the specification is described in terms of embodiments, not every embodiment includes every feature or implementation described herein. The specification can include implicit combinations of explicitly mentioned features and / or implicit combinations of implicitly mentioned features. Such combinations are also expressly included within the scope of the specification and an embodiment.

Claims

1. A tube inside core penetrating mechanism for a tube bender characterized by, The utility model relates to a kind of pipe threading device, including: Base (100), the bottom plate (110) is fixedly connected on the base (100), the sliding slot (120) is opened in the bottom plate (110), the moving seat (130) is slidably connected on the sliding slot (120), one end of the bottom plate (110) is fixedly connected with hydraulic rod (140), and the driving end of the hydraulic rod (140) is fixedly connected at one end of moving seat (130); Core penetrating assembly (200), the core penetrating assembly (200) is arranged on moving seat (130), screw rod (210) and outer expansion plate (260) are arranged in the core penetrating assembly (200), and pipe threading can be carried out.

2. A tube inside core penetrating mechanism for a tube bender as defined in claim 1 wherein, The core penetrating assembly (200) includes: Screw rod (210), the screw rod (210) is rotatably connected in moving seat (130), one end of the screw rod (210) is fixedly connected with rotating wheel (211), and the other end of the screw rod (210) extends out of moving seat (130); First cylinder section (220), the first cylinder section (220) is sleeved outside screw rod (210), a plurality of limit rods (221) are slidably inserted in the first cylinder section (220), one end of a plurality of the limit rods (221) is fixedly connected at one end of moving seat (130), and a plurality of first rotating rods (222) are rotatably connected outside the first cylinder section (220); Second cylinder section (230), the second cylinder section (230) is sleeved outside screw rod (210), a plurality of first support plates (231) are fixedly connected between the second cylinder section (230) and first cylinder section (220); Third cylinder section (240), the third cylinder section (240) is arranged at the end of screw rod (210), the third cylinder section (240) is rotatably connected with the end of screw rod (210), and a plurality of folding rods (241) are rotatably connected outside the third cylinder section (240); Fourth cylinder section (250), the fourth cylinder section (250) is sleeved outside screw rod (210), a plurality of second support plates (251) are fixedly connected between the third cylinder section (240) and fourth cylinder section (250); Outer expansion plate (260), a plurality of the outer expansion plates (260) are rotatably connected between a plurality of first rotating rods (222) and folding rods (241) respectively; Moving sleeve (270), the moving sleeve (270) is threadedly sleeved outside screw rod (210), a plurality of second rotating rods (280) are rotatably connected outside the moving sleeve (270), and the outer ends of a plurality of the second rotating rods (280) are rotatably connected inside a plurality of outer expansion plates (260) respectively.

3. A tube inside core penetrating mechanism for a tube bender as defined in claim 2 wherein, A plurality of the first rotating rods (222), folding rods (241) and second rotating rods (280) are arranged around the central axis of screw rod (210), and the number of a plurality of the first rotating rods (222), folding rods (241) and second rotating rods (280) is consistent with that of a plurality of outer expansion plates (260).

4. The tube inside core bar mechanism for a tube bender of claim 2 wherein, The outer end of the third cylinder section (240) is fixedly connected with round head (300).

5. The tube inside core bar mechanism for a tube bender of claim 2 wherein, The first support plates (231) and the second support plates (251) are arranged around the central axis of the screw rod (210).

6. A tube inside core penetrating mechanism for a tube bender as defined in claim 2 wherein, The outer expansion plates (260) are combined into a complete cylindrical shape, and the outer expansion plates (260) are arranged around the central axis of the screw rod (210).

7. A tube inside core penetrating mechanism for a tube bender as defined in claim 2 wherein, The first support plates (231) and the second support plates (251) are fixedly connected with the telescopic rods (400), and the telescopic rods (400) are fixedly connected with the outer expansion plates (260).

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