Sealing mechanism for tubular product

Abstract

The utility model relates to a sealing mechanism for tubular products, which comprises a frame, a first caliper, a second caliper and a plug, the first caliper is arranged on the frame through a first driving mechanism, and the second caliper is arranged on the frame through a second driving mechanism. The first caliper and the second caliper are clamped or separated under the action of the corresponding first driving mechanism and the second driving mechanism, the first caliper and the second caliper are clamped to form a through hole matched with the outer diameter of a tubular product, and the plug is matched with the inner diameter of the tubular product. And the plug is arranged on the frame through a third driving mechanism. And the clamping block is used for limiting the first caliper and the second caliper after being clamped. According to the universal sealing device, the pipe orifice can be sealed without depending on the pressure of a pressing machine, the universal sealing effect is achieved, the pipe orifice can be sealed no matter the pipe part is horizontal or inclined or bent, the limitation of the pressing machine is avoided, and the sealing effect is good.

Description

Technical Field

[0001] The utility model relates to a sealing mechanism for a tubular product, belonging to the technical field of pipe fitting molding. Background Art

[0002] The stamping and forming of metal tube parts requires sealing the gas or liquid at the two ends of the tube, otherwise it is impossible to provide sufficient high pressure inside the tube and thus fail to form qualified parts. The traditional sealing method relies on the pressure of the press and can only be sealed by the upper and lower calipers. Usually, the sealing of metal tubular parts is to clamp the tube mouth by the upper and lower calipers, and then the cone block is driven by the oil cylinder to block the tube mouth for sealing and finally stamping. The driving force of the caliper comes from the press pressure and can only move up and down. This limits the shape of the metal tube blank to be straight, otherwise it cannot be sealed. This results in the inability to develop more complex, more functional and more types of parts, and even if they are designed, they cannot be produced and processed. Most parts cannot be designed to be straight to achieve more functions, especially the tube mouth angles on both sides of the parts are multi-angle, and it is impossible to achieve the sealing positioning of the processed pipe parts through the existing press calipers. Summary of the invention

[0003] The utility model aims at the deficiencies in the prior art and provides a sealing mechanism for tubular products which has a simple structure, is easy to operate and can be used for sealing the pipe openings of more types of pipe fittings.

[0004] The utility model solves the above-mentioned technical problem with the following technical solution: a sealing mechanism for a tubular product, comprising a frame, a first caliper, a second caliper and a plug, wherein the first caliper is arranged on the frame through a first driving mechanism, and the second caliper is arranged on the frame through a second driving mechanism, the first caliper and the second caliper are engaged or separated under the corresponding first driving mechanism and second driving mechanism, the first caliper and the second caliper are engaged to form a through hole matched with the outer diameter of the tubular product, the plug is matched with the inner diameter of the tubular product, and the plug is arranged on the frame through a third driving mechanism.

[0005] The beneficial effects of the utility model are as follows: the pipe to be sealed is placed in the sealing position, the caliper clamps the pipe under the action of the corresponding driving mechanism, and then the plug extends to and is inserted into the pipe mouth of the pipe under the action of the driving mechanism, so that the pipe mouth can be sealed without relying on the pressure of the press and the effect of universal sealing can be achieved. Whether the pipe part is horizontal, inclined or curved, the pipe mouth can be sealed, it is not limited by the press and the sealing effect is good. In short, the utility model has a simple structure, is easy to operate, is not limited by the press and has a good sealing effect, and can be used to produce more tubular parts with different shapes or functions.

[0006] On the basis of the above technical solution, the present invention can also be improved as follows.

[0007] Furthermore, it also includes a clamping block for limiting the first caliper and the second caliper after clamping, and the clamping block includes a first clamping part acting on the outer side surface of the first caliper after clamping and a second clamping part acting on the outer side surface of the second caliper after clamping, and the first clamping part and the second clamping part are actuated by the clamping block driving cylinder or the first clamping part and the second clamping part are respectively connected to the third driving mechanism.

[0008] The beneficial effect of adopting the above-mentioned further scheme is that the caliper is clamped and matched under the action of the caliper driving mechanism, and then the plug acts on the pipe mouth of the tubular product under the action of the driving mechanism. When the plug is inserted, force is applied to the pipe mouth of the tubular product. In order to further ensure the stability of the cooperation between the caliper and the tubular product, a clamping block is added. The clamping block can be pressed against the outer surface of the caliper under the action of the clamping block driving cylinder or the third driving mechanism, thereby limiting the stability of the caliper after clamping, thereby ensuring the sealing stability of the tubular product.

[0009] Furthermore, the first clamping portion and / or the second clamping portion are respectively provided with a notch that is engaged with the driving shaft of the first caliper or the second caliper.

[0010] The beneficial effect of adopting the above-mentioned further scheme is that, in order to realize the driving of the caliper, a driving shaft will be connected to the outer side surface of the caliper. The driving shaft can be the piston rod of the driving mechanism or a short shaft arranged on the caliper. No matter which one, the driving shaft is mostly connected to the middle position of the caliper. Although the clamping part can act on part of the caliper, there is a problem of unstable force affecting the stability of the caliper. In order to ensure that the clamping part can stably press the caliper, a notch is provided on the clamping part, and the driving shaft can enter the notch, so that the effective area between the clamping part and the caliper is increased, thereby achieving stable support for the caliper, thereby ensuring that the caliper is more stable and reliable when clamped.

[0011] Furthermore, the clamping block also includes a connecting portion, and the first clamping portion is connected to the second clamping portion through the connecting portion. The clamping block is an integrated structure and has an overall U-shaped structure. The connecting portion is connected to the driving end of the third driving mechanism.

[0012] The beneficial effect of adopting the above-mentioned further scheme is that the clamping block can have an independent drive. Independent drive will make the structure of the entire sealing mechanism complicated, the connection between the components is cumbersome, the control is complicated, the weight and volume are increased, and the cost of the sealing mechanism will be increased. The first and second clamping parts adopt an integrated structure, which is not only simple in structure, easy to install, easy to maintain, and low in cost, but also simple and convenient to control. It is connected to the third drive mechanism to limit the caliper when the plug is actuated, which simplifies the control and also meets the requirement of stable positioning of the caliper when the plug is actuated.

[0013] Furthermore, the plug is connected to the driving end of the third driving mechanism through the connecting portion.

[0014] The beneficial effect of adopting the above further scheme is that the clamping block and the plug can be connected to the third driving mechanism respectively, or the plug can be directly installed at the connecting part of the clamping block, and the caliper is between the connecting part and the clamping part, which makes the connection more convenient and the adjustment of the components more convenient.

[0015] Furthermore, the first caliper is provided with a guide groove, and the second caliper is provided with a guide rod matched with the guide groove.

[0016] The beneficial effect of adopting the above further solution is that a guide rod extends from the clamping surface side of the second caliper, and a guide groove cooperating with the guide rod is provided on the first caliper, and the clamping accuracy and stability of the caliper are further guaranteed by the cooperation between the guide groove and the guide rod.

[0017] Furthermore, a positioning boss is provided on the clamping surface of the second caliper, and a guiding inclined surface is provided on the positioning boss.

[0018] The beneficial effect of adopting the above further scheme is that the positioning boss can accurately position the caliper matching process, and the guiding slope can guide the caliper docking or clamping process, which not only improves the docking accuracy, but also avoids collision between the first and second calipers.

[0019] Furthermore, the plug adopts a conical structure.

[0020] The beneficial effect of adopting the above further solution is that tubular products of various specifications can be used, and the sealing effect is better when inserted and matched with the tubular products, thereby ensuring the processing quality of the tubular products.

[0021] Furthermore, the first driving mechanism includes a first caliper hydraulic cylinder, the cylinder body of the first caliper hydraulic cylinder is arranged on the frame, and the piston rod of the first caliper hydraulic cylinder is connected to the first caliper; the second driving mechanism includes a second caliper hydraulic cylinder, the cylinder body of the second caliper hydraulic cylinder is arranged on the frame, and the piston rod of the second caliper hydraulic cylinder is connected to the second caliper.

[0022] The beneficial effect of adopting the above further solution is that the calipers are respectively moved under the action of the corresponding hydraulic cylinders, which is not only convenient to drive but also stable, safe and reliable.

[0023] Furthermore, the third driving mechanism comprises a third driving hydraulic cylinder, a cylinder body of the third driving hydraulic cylinder is arranged on the frame, and a piston rod of the third driving hydraulic cylinder is connected to the clamping block or the plug and the clamping block.

[0024] The beneficial effect of adopting the above-mentioned further scheme is that the caliper is clamped under the action of the caliper hydraulic cylinder, and the third driving hydraulic cylinder is activated to drive the clamping block and the plug to move toward the caliper. The plug is inserted into the interior of the tubular product to be processed, and the clamping block acts on the outer side of the caliper to further limit the clamped caliper, which not only ensures the sealing effect of the pipe mouth, but also makes it safer and more reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the structure of the utility model;

[0026] Figure 2 It is a structural schematic diagram of the first and second calipers of the utility model in a clamping state;

[0027] Figure 3 It is a structural schematic diagram of the utility model in which the caliper and the plug cooperate to seal the pipe opening of the pipe fitting;

[0028] Figure 4 It is a structural schematic diagram of the caliper separation state in the frame of the utility model;

[0029] Figure 5 It is a structural schematic diagram of the clamping state of the caliper in the frame of the utility model;

[0030] Figure 6 It is a structural schematic diagram of the state of the caliper and the plug sealing the pipe opening in the frame of the utility model;

[0031] Figure 7 for Figure 6 A partial enlarged view of the

[0032] In the figure, 1. first caliper hydraulic cylinder; 2. second caliper hydraulic cylinder; 3. third driving hydraulic cylinder; 4. frame; 5. plug; 6. clamping block; 61. first clamping part; 62. second clamping part; 63. connecting part; 64. notch; 7. first caliper; 71. guide groove; 8. second caliper; 81. guide rod; 82. positioning boss; 83. guide slope; 9. pipe fitting. DETAILED DESCRIPTION

[0033] The principles and features of the present invention are described below in conjunction with examples. The examples are only used to explain the present invention and are not used to limit the scope of the present invention.

[0034] like Figure 1-Figure 7As shown, a sealing mechanism for a tubular product comprises a frame 4, a first caliper 7, a second caliper 8 and a plug 5, wherein the first caliper 7 is arranged on the frame 4 via a first driving mechanism, and the second caliper 8 is arranged on the frame 4 via a second driving mechanism, the first caliper 7 and the second caliper 8 are engaged or separated under the corresponding first driving mechanism and second driving mechanism, the first caliper 7 and the second caliper 8 are engaged to form a through hole matched with the outer diameter of the tubular product, the plug 5 is matched with the inner diameter of the tubular product, and the plug 5 is arranged on the frame 4 via a third driving mechanism.

[0035] It also includes a clamping block 6 for limiting the first and second calipers after clamping, the clamping block 6 includes a first clamping portion 61 acting on the outer side of the first caliper after clamping and a second clamping portion 62 acting on the outer side of the second caliper after clamping, the first clamping portion 61 and the second clamping portion 62 are operated under the action of the clamping block 6 driving cylinder or the first clamping portion 61 and the second clamping portion 62 are respectively connected to the third driving mechanism. The caliper is clamped and matched under the action of the caliper driving mechanism, and then the plug 5 acts in the pipe mouth of the tubular product under the action of the driving mechanism. When the plug 5 is inserted, it will apply force to the pipe mouth of the tubular product. In order to further ensure the stability of the caliper and the tubular product, the clamping block 6 is added. The clamping block 6 can be pressed against the outer side of the caliper under the action of the clamping block 6 driving cylinder or the third driving mechanism to limit the stability of the caliper after clamping, thereby ensuring the sealing stability of the tubular product.

[0036] The first clamping part 61 and / or the second clamping part 62 are respectively provided with a notch 64 that engages with the driving shaft of the first caliper or the second caliper. In order to achieve the driving of the caliper, the driving shaft will be connected to the outer surface of the caliper. The driving shaft can be a piston rod of a driving mechanism or a short shaft arranged on the caliper. No matter which one, the driving shaft is mostly connected to the middle position of the caliper. Although the clamping part can act on part of the caliper, there is a problem that the unstable force affects the stability of the caliper. In order to ensure that the clamping part can stably press the caliper, a notch 64 is provided on the clamping part, and the driving shaft can enter the notch 64, so that the action area between the clamping part and the caliper is increased, and the caliper can be stably supported, thereby ensuring that the caliper is more stable and reliable when clamped.

[0037] The clamping block 6 also includes a connecting portion 63, and the first clamping portion 61 is connected to the second clamping portion 62 through the connecting portion 63. The clamping block 6 is an integrated structure, and the overall structure is U-shaped. The connecting portion 63 is connected to the driving end of the third driving mechanism. The clamping block 6 can have an independent drive, and the independent drive will make the entire sealing mechanism structure complicated, the connection between the components is cumbersome, the control is complicated, the weight and volume increase, and the cost of the sealing mechanism will increase. The first and second clamping portions 62 adopt an integrated structure, which is not only simple in structure, easy to install, easy to maintain, and low in cost, but also simple and convenient to control. It is connected to the third driving mechanism to limit the caliper when the plug 5 is actuated, simplifying the control while meeting the requirement of stable positioning of the caliper when the plug 5 is actuated.

[0038] The plug 5 is connected to the driving end of the third driving mechanism through the connecting portion 63. The clamping block 6 and the plug 5 can be connected to the third driving mechanism respectively, or the plug 5 can be directly installed at the connecting portion 63 of the clamping block 6, and the caliper is between the connecting portion 63 and the clamping portion, which is more convenient for connection and adjustment of the matching of various components.

[0039] The first caliper is provided with a guide groove 71, and the second caliper is provided with a guide rod 81 that matches the guide groove 71. A guide rod 81 extends from the clamping surface side of the second caliper, and the first caliper has a guide groove 71 that matches the guide rod 81. The clamping accuracy and stability of the caliper are further ensured by the cooperation between the guide groove 71 and the guide rod 81.

[0040] The clamping surface of the second caliper is provided with a positioning boss 82, and the positioning boss 82 is provided with a guiding slope 83. The positioning boss 82 can accurately position the caliper during the matching process, and the guiding slope 83 can guide the caliper docking or clamping process, which not only improves the docking accuracy, but also avoids collision between the first and second calipers.

[0041] The plug 5 adopts a conical structure, can be used with tubular products of various specifications, has a better sealing effect when plugged into the tubular product, and ensures the processing quality of the tubular product.

[0042] The first driving mechanism includes a first caliper hydraulic cylinder 1, the cylinder body of the first caliper hydraulic cylinder 1 is arranged on the frame 4, and the piston rod of the first caliper hydraulic cylinder 1 is connected to the first caliper; the second driving mechanism includes a second caliper hydraulic cylinder 2, the cylinder body of the second caliper hydraulic cylinder 2 is arranged on the frame 4, and the piston rod of the second caliper hydraulic cylinder 2 is connected to the second caliper. The calipers are respectively moved under the action of the corresponding hydraulic cylinders, which is not only convenient to drive, but also stable, safe and reliable.

[0043] The third driving mechanism includes a third driving hydraulic cylinder 3, the cylinder body of the third driving hydraulic cylinder 3 is arranged on the frame 4, and the piston rod of the third driving hydraulic cylinder 3 is connected with the clamping block 6 or the plug 5 and the clamping block 6. The caliper is clamped under the action of the caliper hydraulic cylinder, and the third driving hydraulic cylinder 3 is actuated to drive the clamping block 6 and the plug 5 to move toward the caliper, and the plug 5 is inserted into the inside of the tubular product to be processed, and the clamping block 6 acts on the outer side of the caliper to further limit the clamped caliper, which not only ensures the sealing effect of the pipe mouth, but also makes it safer and more reliable.

[0044] The pipe to be sealed is placed in the sealing position, the first caliper hydraulic cylinder drives the first caliper to move, the second caliper hydraulic cylinder drives the second caliper to move, the first caliper and the second caliper clamp the metal pipe, the third driving hydraulic cylinder moves, driving the conical plug and the caliper clamping block to move toward the pipe mouth of the pipe part, the conical plug will first enter the pipe mouth and then move further, the conical plug blocks the pipe mouth, and the caliper clamping block clamps the caliper. It can achieve the effect of sealing the pipe mouth without relying on the pressure of the press and achieve the effect of universal sealing. Whether the pipe part is horizontal, inclined or curved, the pipe mouth can be sealed, which is not restricted by the press and has a good sealing effect.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A sealing mechanism for a tubular product, characterized in that: The invention comprises a frame (4), a first caliper (7), a second caliper (8) and a plug (5), wherein the first caliper (7) is arranged on the frame (4) through a first driving mechanism, and the second caliper (8) is arranged on the frame (4) through a second driving mechanism, and the first caliper and the second caliper are engaged or separated under the corresponding first driving mechanism and second driving mechanism, and the first caliper and the second caliper are engaged to form a through hole that matches the outer diameter of the tubular product, and the plug (5) matches the inner diameter of the tubular product, and the plug (5) is engaged through the first driving mechanism. The three driving mechanisms are arranged on the frame (4); and also include a clamping block (6) for limiting the first caliper and the second caliper after clamping, the clamping block (6) includes a first clamping portion (61) acting on the outer side surface of the first caliper after clamping and a second clamping portion (62) acting on the outer side surface of the second caliper after clamping, the first clamping portion (61) and the second clamping portion (62) being actuated by a driving cylinder of the clamping block (6) or the first clamping portion (61) and the second clamping portion (62) being connected to the third driving mechanism respectively.

2. The sealing mechanism for tubular products according to claim 1, characterized in that: The first clamping portion (61) and / or the second clamping portion (62) are respectively provided with a notch (64) for clamping with the driving shaft of the first caliper or the second caliper.

3. The sealing mechanism for a tubular product according to claim 2, characterized in that: The clamping block (6) further comprises a connecting portion (63), the first clamping portion (61) being connected to the second clamping portion (62) via the connecting portion (63), the clamping block (6) being an integrated structure and being U-shaped as a whole, and the connecting portion (63) being connected to the third driving mechanism.

4. The sealing mechanism for a tubular product according to claim 3, characterized in that: The plug (5) is connected to the third driving mechanism via the connecting portion (63).

5. The sealing mechanism for a tubular product according to any one of claims 1 to 4, characterized in that: The first caliper is provided with a guide groove (71), and the second caliper is provided with a guide rod (81) matched with the guide groove (71).

6. The sealing mechanism for a tubular product according to claim 5, characterized in that: The second caliper is provided with a positioning boss (82), and the positioning boss (82) is provided with a guiding inclined surface (83).

7. The sealing mechanism for a tubular product according to any one of claims 1 to 4, characterized in that: The plug (5) has a conical structure.

8. The sealing mechanism for a tubular product according to claim 1, characterized in that: The first driving mechanism comprises a first caliper hydraulic cylinder (1), the cylinder body of the first caliper hydraulic cylinder (1) is arranged on the frame (4), and the piston rod of the first caliper hydraulic cylinder (1) is connected to the first caliper; the second driving mechanism comprises a second caliper hydraulic cylinder (2), the cylinder body of the second caliper hydraulic cylinder (2) is arranged on the frame (4), and the piston rod of the second caliper hydraulic cylinder (2) is connected to the second caliper.

9. The sealing mechanism for a tubular product according to claim 1, characterized in that: The third driving mechanism comprises a third driving hydraulic cylinder (3), the cylinder body of the third driving hydraulic cylinder (3) is arranged on the frame (4), and the piston rod of the third driving hydraulic cylinder (3) is connected to the clamping block (6) or the plug (5) and the clamping block (6).

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