CN220115898U - Axial feeding assembly for straight pipe fittings - Google Patents

Abstract

The utility model discloses an axial feeding component for straight pipe fittings, which comprises a base, a push rod and a driving device capable of driving the push rod to move back and forth relative to the base, wherein the maximum radial dimension of the push rod is smaller than or equal to the outer diameter of the pipe fittings, the front end of the push rod is provided with a plug capable of being inserted into the inner diameter of the pipe fittings, part or all of the outer side wall of the plug is attached to the inner side wall of the pipe fittings, and a step capable of being abutted against the end face of the pipe fittings is formed between the rear end of the plug and the outer side wall of the push rod. The utility model can reduce the excess materials as much as possible when being used for feeding the pipe cutting device in the axial direction, and is beneficial to improving the utilization rate of raw materials.

Description

Axial feeding assembly for straight pipe fittings

Technical Field

The utility model relates to the technical field of straight pipe machining, in particular to an axial feeding component for straight pipe fittings.

Background

In many industrial products, straight pipes are used as raw materials, for example, heat exchange pipes in heat exchangers, and in the production process, long straight pipes are cut into proper lengths, and then the heat exchange pipes can be formed through some processing.

In the prior art, when cutting the pipe fitting, the pipe fitting is clamped by adopting a pipe clamping device in a general axial feeding mode, then one end of the pipe fitting is aligned with a feeding hole of a pipe cutting mechanism, and then the pipe fitting is pushed axially, so that the pipe fitting can be pushed into the pipe cutting mechanism. In the patent with publication number CN115921676a, the raw material straight pipe adopts this feeding mode.

The feeding mode has the following problems that as the pipe clamping device used for clamping the pipe fitting cannot be pushed into the feeding hole of the pipe cutting mechanism, the final residual material of each raw pipe fitting can be long, the length of the residual material is at least the sum of the clamping length of the pipe clamping device and the length of the feeding hole, the waste is quite high, and the raw material utilization rate is not high.

Disclosure of Invention

In view of the above, an object of the present utility model is to provide an axial feeding assembly for straight pipe fittings, which is advantageous for improving the utilization rate of raw materials.

The utility model adopts the technical proposal for solving the technical problems that:

the utility model provides an axial feeding subassembly that can be used to straight pipe fitting, includes frame, push rod, can drive the push rod is for the drive arrangement of frame back-and-forth movement, the biggest radial dimension of push rod is less than or equal to the outside diameter of pipe fitting, the front end of push rod has the plug in the internal diameter that can insert the pipe fitting, form the step that can with the terminal surface butt of pipe fitting between the rear end of plug and the lateral wall of push rod.

In a preferred scheme of the utility model, the push rod is a round rod, the plug is a conical rod with gradually increased diameter from front to back, and the outer side wall of the rear end of the plug is attached to the inner side wall of the pipe fitting.

In a preferred scheme of the utility model, the base is movably provided with a mounting seat, the push rod is movably mounted on the mounting seat, and the driving device comprises a first push tube driver capable of driving the mounting seat to move forwards and backwards relative to the base and a second push tube driver capable of driving the push rod to move forwards and backwards relative to the mounting seat.

In a preferred scheme of the utility model, a sliding seat is slidably arranged on the mounting seat, a supporting frame is fixedly arranged on the mounting seat, the rear part of the push rod is fixedly arranged on the sliding seat, the front part of the push rod is slidably matched with the supporting frame, and the second push tube driver is in transmission connection with the sliding seat to drive the push rod to move forwards and backwards relative to the mounting seat.

In a preferred scheme of the utility model, the first push tube driver is a motor, a cylinder or an oil cylinder, and the second push tube driver is a motor, a cylinder or an oil cylinder.

In a preferred embodiment of the present utility model, the support frame is provided with a linear bearing, and the support frame is slidably matched with the push rod through the linear bearing.

In a preferred embodiment of the utility model, the mounting base is provided with a pipe clamping device capable of clamping a pipe fitting, and the pipe clamping device is positioned in front of the pipe fitting.

In a preferred scheme of the utility model, the pipe clamping device comprises a left clamping block, a right clamping block positioned on the right side of the left clamping block, a first pipe clamping driver capable of driving the left clamping block to move left and right, and a second pipe clamping driver capable of driving the right clamping block to move left and right, wherein a first clamping groove is formed in the right side surface of the left clamping block, a second clamping groove corresponding to the first clamping groove is formed in the left side surface of the right clamping block, and when the left clamping block and the right clamping block are folded, the pipe fitting is clamped through the first clamping groove and the second clamping groove.

In a preferred embodiment of the present utility model, the second push tube driver is capable of driving the push rod forward through a space between the first clamping groove and the second clamping groove when the left clamping block and the right clamping block are released.

In a preferred scheme of the utility model, the left clamping block or the right clamping block is provided with a positioning guide pin arranged along the left-right direction, and the right clamping block or the left clamping block is provided with a guide hole matched with the positioning guide pin.

In a preferred scheme of the utility model, a sliding seat which can be driven by the driving device to move back and forth relative to the machine seat is movably arranged on the machine seat, a push rod mounting plate is fixed on the sliding seat, the push rod is a hollow rod, the rear part of the push rod is fixed with the push rod mounting plate, the front end of the plug is provided with at least 2 expansion slots, the front ends of the expansion slots are open, the rear ends are closed, an elastic sheet is formed between two adjacent expansion slots, a core rod is penetrated in the push rod, the front end of the core rod is provided with an expansion head, the core rod is connected with an expansion driver which can drive the core rod to move back and forth relative to the push rod, and the inner side wall of the elastic sheet is pushed to expand the plug when the expansion head moves back and forth.

In a preferred embodiment of the present utility model, a tapered surface for pushing the elastic sheet is provided at the rear portion of the outer sidewall of the expansion head, and the diameter of the tapered surface gradually decreases from front to rear.

The beneficial effects of the utility model are as follows: after the plug at the front end of the push rod is inserted into the pipe fitting, the pipe fitting can be pushed forward through the push rod to be fed, when the rest part of the pipe fitting is short, the push rod can be pushed into a feeding hole of the pipe cutting mechanism together with the pipe fitting, and after the last part of the pipe fitting is cut off by the pipe cutting mechanism, the push rod can also push out the last rest material from the front side of the pipe cutting mechanism. Compared with the prior art, the method can reduce the amount of the residual materials as much as possible, improves the utilization rate of the materials, and is also beneficial to ejecting the final residual materials from the pipe cutting mechanism.

Drawings

FIG. 1 is a perspective view of embodiment 1 of the present utility model;

FIG. 2 is a schematic diagram of the fitting structure of the push rod and the pipe in the embodiment 1 of the present utility model;

FIG. 3 is a schematic view showing a partial structure of a push rod in embodiment 1 of the present utility model;

FIG. 4 is a schematic diagram of the connection structure of the left and right clamp blocks;

FIG. 5 is a schematic view showing the installation structure of a push rod in embodiment 2 of the present utility model;

fig. 6 is a schematic diagram of a fitting structure of the expansion head and the plug in embodiment 2 of the present utility model.

Detailed Description

The technical scheme of the present utility model will be clearly and completely described below with reference to the accompanying drawings.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear …) in the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly. Furthermore, the description of "preferred," "less preferred," and the like, herein is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "preferred", "less preferred" may include at least one such feature, either explicitly or implicitly.

Referring to fig. 1 to 6, the present utility model proposes an axial feeding assembly for straight pipe fittings, comprising a base 1, a push rod 41, and a driving device capable of driving the push rod 41 to move back and forth relative to the base 1, wherein the maximum radial dimension of the push rod 41 is smaller than or equal to the outer diameter of the pipe fitting 32, the front end of the push rod 41 is provided with a plug 411 capable of being inserted into the inner diameter of the pipe fitting 32, a part or all of the outer side wall of the plug 411 is attached to, i.e. is close to or is in close contact with, the inner side wall of the pipe fitting 32, and a step 412 capable of being abutted to the end face of the pipe fitting 32 is formed between the rear end of the plug 411 and the outer side wall of the push rod 41.

The tube 32 is typically a copper tube, and has an outer diameter of 8mm, 9mm, 10mm, 11mm, etc., and the tube 32 having an outer diameter of 10mm is exemplified, and the corresponding push rod 41 may have a diameter of 10mm, 9.9mm, 9.8mm, etc. With such a design, the method of pushing the tube 32 to the tube cutting mechanism for tube cutting is: firstly, the plug 411 at the front end of the push rod 41 is inserted into the pipe fitting 32, the rear end of the pipe fitting 32 is supported, other parts of the pipe fitting 32 are supported in V-shaped or U-shaped grooves, the front end of the pipe fitting 32 is aligned with the feeding hole of the pipe cutting mechanism, then the pipe fitting 32 is pushed forward through the push rod 41, the front end of the pipe fitting 32 is inserted into the feeding hole of the pipe cutting mechanism, the pipe cutting mechanism can cut the pipe fitting 32 a little bit, when the rest of the pipe fitting 32 is short, the push rod 41 can push the pipe fitting 32 into the feeding hole of the pipe cutting mechanism together, and after the pipe cutting mechanism cuts the last part of the pipe fitting 32, the push rod 41 can push the last rest out of the front side of the pipe cutting mechanism. The pipe cutting mechanism can cut the pipe fitting by ring cutting and then stretch breaking, or by ring cutting and then beating. Compared with the prior art, the method can reduce the amount of the residual materials as much as possible, improves the utilization rate of the materials, and is also beneficial to ejecting the final residual materials from the pipe cutting mechanism.

The push rod 41 may be a round rod, or may be a square rod, a hexagonal rod, or a rod of other shapes, with a round rod being preferred. When the push rod 41 is a round rod, the maximum radial dimension of the push rod 41 is the outer diameter of the push rod 41, and when the push rod 41 is a square rod, the maximum radial dimension of the push rod 41 is the diagonal of the cross section of the push rod 41.

In a preferred embodiment of the present utility model, the plug 411 is a tapered rod with a gradually increasing diameter from front to rear, the difference between the diameter of the rear end of the plug 411 and the inner diameter of the tube 32 is-0.2 mm to 0.1mm, and only the rear end portion of the outer side wall of the plug 411 is fitted to the inner side wall of the tube 32 after the plug 411 is inserted into the tube 32.

Example 1

Fig. 1 to 4 show an embodiment 1 of the present utility model, in which a mounting seat 4 is movably provided on a base 1, a push rod 41 is movably mounted on the mounting seat 4, and a driving device includes a first push tube driver 31 capable of driving the mounting seat 4 to move forward and backward relative to the base 1, and a second push tube driver 42 capable of driving the push rod 41 to move forward and backward relative to the mounting seat 4. The sliding seat 43 is slidably mounted on the mounting seat 4, the supporting frame 44 is fixedly arranged on the mounting seat 4, the rear portion of the push rod 41 is fixed with the sliding seat 43, the front portion of the push rod 41 is slidably matched with the supporting frame 44, and the second push tube driver 42 is in transmission connection with the sliding seat 43 to drive the push rod 41 to move forwards and backwards relative to the mounting seat 4.

Specifically, a linear bearing 45 is provided on the support frame 44, and the support frame 44 is slidably engaged with the push rod 41 through the linear bearing 45.

The first push tube driver 31 is a motor, a cylinder or an oil cylinder, and the second push tube driver 42 is a motor, a cylinder or an oil cylinder. When the first push tube driver 31 and the second push tube driver 42 use motors, a screw pair or a rack-and-pinion pair is used in combination to drive the slider 43 and the push rod 41 to move back and forth together.

Further, the mounting base 4 is provided with a pipe clamping device capable of clamping the pipe fitting 32, and the pipe clamping device is positioned in front of the pipe fitting 32. Specifically, the pipe clamping device comprises a left clamping block 81, a right clamping block 82 positioned on the right side of the left clamping block 81, a first pipe clamping driver 83 capable of driving the left clamping block 81 to move left and right, and a second pipe clamping driver 84 capable of driving the right clamping block 82 to move left and right, wherein a first clamping groove 811 is formed in the right side surface of the left clamping block 81, a second clamping groove 821 corresponding to the first clamping groove 811 is formed in the left side surface of the right clamping block 82, and when the left clamping block 81 and the right clamping block 82 are folded, the pipe fitting 32 is clamped through the first clamping groove 811 and the second clamping groove 821.

When the pipe cutting is started, the rear end of the pipe fitting 32 is far away from the pipe cutting mechanism, the pipe fitting 32 can be clamped by adopting the pipe clamping device, then the pipe fitting is pushed forward by the installation seat 4 together with the pipe clamping device and the push rod 41, when the pipe clamping device is close to the pipe cutting mechanism, the installation seat 4 stops, then the left clamping block 81 and the right clamping block 82 are loosened, then the push rod 41 and the pipe fitting 32 are continuously pushed forward by the second pipe pushing driver 42, and the push rod 41 passes through the space between the first clamping groove 811 and the second clamping groove 821 forward until the pipe fitting 32 is cut.

Preferably, the first clamping groove 811 and the second clamping groove 821 are semicircular grooves, and the first clamping groove 811 and the second clamping groove 821 together form a circular hole when the left clamping block 81 and the right clamping block 82 are folded.

The first and second crimp drivers 83 and 84 may be cylinders, motors or cylinders, with the cylinders being optimal.

In order to avoid dislocation of the left clamping block 81 and the right clamping block 82, a positioning guide pin 85 arranged along the left-right direction is arranged on the left clamping block 81 or the right clamping block 82, and a guide hole 86 matched with the positioning guide pin 85 is arranged on the right clamping block 82 or the left clamping block 81.

In order to improve the motion smoothness of each action part, a first guide rail capable of guiding the installation seat 4 is arranged on the machine base 1, and a sliding block matched with the first guide rail is arranged on the installation seat 4; the mounting seat 4 is provided with a second guide rail for guiding the sliding seat 43; the mounting seat 4 is provided with a third guide rail for guiding the left clamping block 81 and the right clamping block 82, and the left clamping block 81 and the right clamping block 82 are respectively provided with a sliding block matched with the third guide rail.

This embodiment is suitable for pushing the tube forward.

Example 2

In this embodiment, a sliding seat 43 capable of being driven by a driving device to move back and forth relative to the base 1 is movably disposed on the base 1, a push rod mounting plate 21 is fixed on the sliding seat 43, the push rod 41 is a hollow rod, the rear portion of the push rod 41 is fixed with the push rod mounting plate 21, at least 2 expansion slots 413, such as 3, 4, 5 and 6 expansion slots 413 are disposed at the front end of the plug 411, and all expansion slots 413 are disposed along the axial direction. The front end of the expansion groove 413 is opened, the rear end is closed, a spring piece 414 is formed between any two adjacent expansion grooves 413, a core rod 5 is arranged in the push rod 41 in a penetrating mode, an expansion head 51 is arranged at the front end of the core rod 5, and the core rod 5 is connected with an expansion driver 6 capable of driving the expansion driver to move forwards and backwards relative to the push rod 41. The expansion driver 6 may be a power device such as a cylinder, an oil cylinder, or a motor, and pushes the inner side wall of the elastic sheet 414 to expand the plug 411 when the expansion head 51 moves back and forth.

The outer side wall of the expansion head 51 is provided with a conical surface 511 for pushing against the elastic sheet 414, and the diameter of the conical surface 511 may be gradually reduced from front to back, or may be gradually increased from front to back. Taking the scheme that the diameter of the conical surface 511 gradually decreases from front to back as an example, when the expansion head 51 moves backward, the elastic sheet 414 is pushed to expand the plug 411, and at this time, the plug 411 can clamp the pipe 32, and the pipe 32 can be pulled to move forward or backward by the push rod 41. When the expansion head 51 moves forward, the elastic piece 414 returns to the original shape, and at this time, the elastic piece on the plug 41 no longer clamps the inner wall of the pipe fitting 32, and the pipe fitting 32 can be pushed forward by the push rod 41, or the plug 411 can be pulled out from the pipe fitting 32.

The foregoing description of the preferred embodiments of the present utility model should not be construed as limiting the scope of the utility model, but rather should be understood to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the utility model as defined by the following description and drawings or any application directly or indirectly to other relevant art(s).

Claims (10)

1. The utility model provides an axial feeding subassembly that can be used to straight pipe fitting, its characterized in that includes frame (1), push rod (41), can drive push rod (41) for the drive arrangement of frame (1) back-and-forth movement, the biggest radial dimension of push rod (41) is less than or equal to the external diameter of pipe fitting (32), the front end of push rod (41) has plug (411) in the internal diameter that can insert pipe fitting (32), form step (412) that can with the terminal surface butt of pipe fitting (32) between the rear end of plug (411) and the lateral wall of push rod (41).

2. An axial feeding assembly for straight pipe fittings according to claim 1, wherein the push rod (41) is a round rod, the plug (411) is a conical rod with gradually increasing diameter from front to back, and the outer side wall of the rear end of the plug (411) is attached to the inner side wall of the pipe fitting (32).

3. An axial feeding assembly for straight pipe fittings according to claim 1, characterized in that the base (1) is movably provided with a mounting seat (4), the push rod (41) is movably mounted on the mounting seat (4), and the driving device comprises a first push pipe driver (31) capable of driving the mounting seat (4) to move back and forth relative to the base (1) and a second push pipe driver (42) capable of driving the push rod (41) to move back and forth relative to the mounting seat (4).

4. An axial feeding assembly for straight pipe fittings according to claim 3, characterized in that a sliding seat (43) is slidably mounted on the mounting seat (4), a supporting frame (44) is fixedly arranged on the mounting seat (4), the rear part of the push rod (41) is fixedly arranged on the sliding seat (43), the front part of the push rod (41) is slidably matched with the supporting frame (44), and the second push pipe driver (42) is in transmission connection with the sliding seat (43) to drive the push rod (41) to move back and forth relative to the mounting seat (4).

5. An axial feed assembly for straight pipe elements according to claim 3, characterized in that the mounting base (4) is provided with a pipe clamping device capable of clamping the pipe element (32), which pipe clamping device is located in front of the pipe element (32).

6. The axial feeding assembly for the straight pipe fitting according to claim 5, wherein the pipe clamping device comprises a left clamping block (81), a right clamping block (82) positioned on the right side of the left clamping block (81), a first pipe clamping driver (83) capable of driving the left clamping block (81) to move left and right, and a second pipe clamping driver (84) capable of driving the right clamping block (82) to move left and right, a first clamping groove (811) is formed in the right side surface of the left clamping block (81), a second clamping groove (821) corresponding to the first clamping groove (811) is formed in the left side surface of the right clamping block (82), and the pipe fitting (32) is clamped through the first clamping groove (811) and the second clamping groove (821) when the left clamping block (81) and the right clamping block (82) are folded.

7. An axial feed assembly for straight pipe elements according to claim 6, characterized in that the second push tube driver (42) is adapted to drive the push rod (41) forward through the space between the first clamping groove (811) and the second clamping groove (821) when the left clamping block (81) and the right clamping block (82) are released.

8. An axial feeding assembly for straight pipe fittings according to claim 7, characterized in that the left clamping block (81) or the right clamping block (82) is provided with a positioning guide pin (85) arranged along the left-right direction, and the right clamping block (82) or the left clamping block (81) is provided with a guide hole (86) matched with the positioning guide pin (85).

9. An axial feeding assembly for straight pipe fittings according to claim 1, characterized in that a sliding seat (43) capable of being driven by the driving device to move back and forth relative to the machine seat (1) is movably arranged on the machine seat (1), a push rod mounting plate (21) is fixed on the sliding seat (43), the push rod (41) is a hollow rod, the rear part of the push rod (41) is fixed with the push rod mounting plate (21), at least 2 expansion slots (413) are arranged at the front end of the plug (411), the front end of the expansion slots (413) is opened, the rear end is closed, a spring piece (414) is formed between two adjacent expansion slots (413), a core rod (5) is penetrated inside the push rod (41), the front end of the core rod (5) is provided with an expansion head (51), the core rod (5) is connected with an expansion driver (6) capable of driving the core rod to move back and forth relative to the push rod (41), and the inner side wall of the expansion head (411) is pushed to expand the plug (414) when the core rod moves back and forth.

10. An axial feeding assembly for straight pipe fittings according to claim 9, characterized in that the rear part of the outer side wall of the expansion head (51) is provided with a conical surface (511) for pushing against the elastic sheet (414), the diameter of the conical surface (511) gradually decreases from front to back.