Hole jacking assembly in copper pipe hole jacking equipment

Abstract

The utility model provides a hole jacking assembly in copper pipe hole jacking equipment. The hole jacking assembly solves the problem that existing equipment is short in service life. The hole jacking assembly in the copper pipe hole jacking equipment comprises a driving mechanism and two coaxially-arranged push rods, the adjacent end faces of the two push rods are extrusion faces, each extrusion face is composed of an inclined face and a vertical plane which are continuously distributed from top to bottom, a steel ball is arranged between the two extrusion faces, and each push rod comprises a connecting rod and a pressing sleeve arranged on the connecting rod in a sleeving mode; the adjacent ends of the two pressing sleeves are closed, the adjacent end faces of the two pressing sleeves are two extrusion faces respectively, and limiting pieces are fixed in the ends, away from each other, of the two pressing sleeves. Baffle rings are formed on the outer wall of the connecting rod, and the two baffle rings are located in the two pressing sleeves respectively; springs are also arranged in the two pressing sleeves; the axes of the springs and the pressing sleeves are arranged in parallel; the baffle rings are located between the corresponding springs and the corresponding limiting pieces, one ends of the springs press the inner walls of the corresponding pressing sleeves, and the driving mechanism is used for driving the two connecting rods to be close to or away from each other. The hole jacking assembly in the copper pipe hole jacking equipment is long in service life.

Description

Technical Field

[0001] The utility model belongs to the technical field of machinery and relates to a copper tube top hole device, in particular to a top hole component in the copper tube top hole device. Background Art

[0002] The flute-shaped copper pipe is used as the main pipe for transporting refrigerant to the indoor unit of the central air conditioner, and a plurality of T-shaped holes for connecting branch pipes are arranged on its side.

[0003] At present, the equipment used for forming T-shaped holes, such as the copper tube top hole equipment previously proposed by the applicant (application number: 202321374870.6), includes a base plate, a lower mold arranged on the base plate, an upper mold arranged opposite to the lower mold, and a driving member for driving the upper mold to rise and fall. A through hole for horizontally clamping the copper tube is formed between the upper mold and the lower mold, and it is characterized in that a horizontally arranged straight hole is also formed between the upper mold and the lower mold, the axes of the straight hole and the through hole are perpendicular, and one end of the straight hole is connected to the through hole; two push rods are coaxially arranged in the copper tube, and the adjacent end faces of the two push rods are composed of an inclined surface and a vertical plane, the vertical plane is on the lower side of the inclined surface, the two inclined surfaces are symmetrically arranged and the distance between the two gradually decreases from top to bottom; a steel ball is arranged between the two push rods, and the outer diameter of the steel ball is smaller than the diameter of the straight hole; the equipment also includes a driving mechanism for driving the two push rods to move closer to or away from each other.

[0004] The above equipment realizes the top hole operation by squeezing the steel ball upwards with two push rods. In actual use, when the push rod moves too fast, the steel ball will impact the inner wall of the copper tube at a relatively fast speed, which not only affects the life of the steel ball, but also affects the top hole forming quality. Utility Model Content

[0005] The utility model aims to solve the above problems in the prior art and proposes a top hole component in a copper tube top hole device which has stable operation and long service life.

[0006] The purpose of the utility model can be achieved through the following technical solutions: a top hole assembly in a copper tube top hole device, comprising a driving mechanism and two coaxially arranged push rods, the adjacent end faces of the two push rods are both extrusion faces, the extrusion faces are composed of an inclined surface and a vertical plane continuously distributed from top to bottom, a steel ball is arranged between the two extrusion faces, and the characteristic is that the push rod comprises a connecting rod and a pressing sleeve sleeved on the connecting rod; the adjacent ends of the two pressing sleeves are both closed, and the adjacent end faces of the two pressing sleeves are respectively the two above-mentioned extrusion faces, and the ends of the two pressing sleeves that are far away from each other are both fixed with limiting members; a retaining ring is formed on the outer wall of the connecting rod, and the two retaining rings are respectively located in the two pressing sleeves; springs are also arranged in the two pressing sleeves, and the axes of the spring and the pressing sleeve are arranged in parallel; the retaining ring is between the corresponding spring and the corresponding limiting member, one end of the spring is pressed on the inner wall of the corresponding pressing sleeve, the driving mechanism is used to drive the two connecting rods to approach or move away from each other, and the retaining ring can be pressed on the other end of the corresponding spring or the corresponding limiting member.

[0007] When in use, the driving mechanism moves the two connecting rods to move closer to each other, and the connecting rod drives the sleeve to slowly move closer through the spring, forcing the steel ball to move up to perform the top hole operation.

[0008] The push rod includes a connecting rod and a pressing sleeve sleeved on the connecting rod, and the connecting rod pushes the pressing sleeve forward through a spring, causing the steel ball to move up more gently and smoothly. This can not only avoid a strong collision between the steel ball and the copper tube, but also make the top hole process proceed smoothly, with the advantages of stable operation and long service life.

[0009] In the jacking assembly in the above copper tube jacking equipment, the above-mentioned limiter is ring-shaped and sleeved on the corresponding connecting rod to increase the contact area between the retaining ring and the limiter, so that the connecting rod can stably drive the pressing sleeve to reset.

[0010] In the above-mentioned top hole assembly of the copper tube top hole device, the limiter is detachably connected to the corresponding pressing sleeve through a threaded structure to adjust the compression amount of the spring for easy debugging.

[0011] In the jacking assembly of the copper tube jacking device, a circle of jacks is axially provided on the end faces of the two limit members that are away from each other, and when in use, the jacks cooperate with tools to rotate the limit members, which is convenient for assembly and debugging.

[0012] In the jacking hole assembly in the above copper tube jacking hole equipment, the connecting rod and the corresponding pressing sleeve are circumferentially fixed to prevent the pressing sleeve from rotating during the jacking hole process, so that the equipment can work more stably.

[0013] In the jacking assembly of the copper tube jacking device, an annular step is provided on the inner wall of the two ends of the two pressing sleeves that are far away from each other. The annular step is composed of an annular side wall and an annular bottom wall. Two limiters are respectively located in the two annular steps, and the limiters are threadedly connected to the corresponding annular side walls. The design of the annular step can limit the inward screwing distance of the limiter to prevent the spring from being over-compressed.

[0014] In the top hole assembly in the above-mentioned copper tube top hole equipment, the inner hole of the pressing sleeve is a polygonal hole, the outer side surface of the retaining ring is a polygon matching the polygonal hole, and the outer side surface of the retaining ring is attached to the inner side surface of the pressing sleeve, so that a stable circumferential fit is formed between the pressing sleeve and the connecting rod.

[0015] As another solution, in the jacking assembly of the copper tube jacking device, the inner side walls of the two pressing sleeves are axially provided with strip grooves, and the ends of the two strip grooves that are far from each other are open, and the outer wall of the retaining ring is provided with a slider matching the strip groove, and the slider is inserted into the corresponding strip groove. Under the cooperation of the strip groove and the slider, a stable circumferential cooperation is also formed between the pressing sleeve and the connecting rod.

[0016] Compared with the prior art, the top hole assembly in the copper tube top hole equipment has the following advantages:

[0017] 1. The push rod includes a connecting rod and a pressing sleeve on the connecting rod, and the connecting rod pushes the pressing sleeve forward through a spring, causing the steel ball to move up more gently and smoothly. This can avoid a strong collision between the steel ball and the copper tube, and make the top hole process proceed smoothly, with the advantages of stable operation and long service life.

[0018] 2. The limiter is detachably connected to the corresponding compression sleeve through a threaded structure to adjust the compression amount of the spring for easy debugging. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural diagram of the copper tube top hole equipment.

[0020] Figure 2 yes Figure 1 A magnified schematic diagram of center A.

[0021] In the figure, 1, press sleeve; 1a, inclined plane; 1b, vertical plane; 1c, annular step; 2, steel ball; 3, connecting rod; 3a, retaining ring; 4, limit piece; 4a, socket; 5, spring; 6, bottom plate; 7, cylinder; 8, connecting plate. DETAILED DESCRIPTION

[0022] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments. Embodiment 1

[0023] like Figure 1 As shown, the top hole assembly in the copper tube top hole device includes a driving mechanism and two coaxially arranged push rods, the adjacent end faces of the two push rods are extrusion surfaces, and a steel ball 2 is arranged between the two extrusion surfaces. Among them, the extrusion surface is composed of an inclined surface 1a and a vertical plane 1b continuously distributed from top to bottom, and the distance between the two inclined surfaces 1a gradually decreases from top to bottom.

[0024] Specifically,

[0025] like Figure 1 and Figure 2As shown, the push rod includes a connecting rod 3 and a pressing sleeve 1 sleeved on the connecting rod 3, wherein the adjacent ends of the two pressing sleeves 1 are both closed, and the adjacent end faces of the two pressing sleeves 1 are respectively the two extrusion surfaces mentioned above. A limiting member 4 is fixed in the ends of the two pressing sleeves 1 that are far away from each other; a retaining ring 3a is integrally formed on the outer wall of the connecting rod 3, the retaining ring 3a and the connecting rod 3 are coaxial, and the two retaining rings 3a are respectively in the two pressing sleeves 1. A spring 5 is also provided in the two pressing sleeves 1, and the outer diameter of the spring 5 matches the inner diameter of the pressing sleeve 1. The axes of the spring 5 and the pressing sleeve 1 are arranged in parallel, and one end of the spring 5 is pressed on the inner wall of the corresponding pressing sleeve 1. The retaining ring 3a is between the corresponding spring 5 and the corresponding limiting member 4, and the driving mechanism is used to drive the two connecting rods 3 to approach or move away from each other, and the retaining ring 3a can be pressed on the other end of the corresponding spring 5 or the corresponding limiting member 4 through the movement of the connecting rod 3.

[0026] When in use, the driving mechanism moves to drive the two connecting rods 3 to approach each other, and the connecting rod 3 drives the sleeve to slowly approach through the spring 5, forcing the steel ball 2 to move upward to perform the top hole operation.

[0027] The push rod includes a connecting rod 3 and a pressing sleeve 1 sleeved on the connecting rod 3, and the connecting rod 3 pushes the pressing sleeve 1 forward through the spring 5, prompting the steel ball 2 to move up more gently and smoothly. This can avoid a strong collision between the steel ball 2 and the copper tube, and make the top hole process proceed smoothly, with the advantages of stable operation and long service life.

[0028] In this embodiment,

[0029] The stopper 4 is annular and is sleeved on the corresponding connecting rod 3 to increase the contact area between the stopper ring 3a and the stopper 4, so that the connecting rod 3 can stably drive the pressing sleeve 1 to reset. Further explanation, the stopper 4 is detachably connected to the corresponding pressing sleeve 1 through a threaded structure to adjust the compression amount of the spring 5 for easy debugging. Naturally, the stopper 4 can also be a circle of blocks fixed on the inner wall of the pressing sleeve 1.

[0030] Furthermore, if Figure 2 As shown, a circle of sockets 4a are axially provided on the end faces of the two limit members 4 that are separated from each other, and when in use, the sockets 4a cooperate with the tool to rotate the limit members 4, which is convenient for assembly and debugging; an annular step 1c is provided on the inner wall of the end portions of the two pressing sleeves 1 that are separated from each other, and the annular step 1c is coaxially arranged with the pressing sleeve 1. The annular step 1c is composed of an annular side wall and an annular bottom wall, and the annular side wall and the annular bottom wall are perpendicular to each other. The two limit members 4 are respectively located in the two annular steps 1c, and the limit members 4 are threadedly connected to the corresponding annular side walls. The design of the annular step 1c can limit the inward screwing distance of the limit member 4 to prevent the spring 5 from being over-compressed.

[0031] The specific structure of the driving mechanism is as follows: it includes a bottom plate 6 and two cylinders 7 fixed on the bottom plate 6, and the ends of the two connecting rods 3 that are far away from each other are respectively connected to the piston rods of the two cylinders 7. Further explanation, a connecting plate 8 is also provided between the cylinder 7 and the corresponding connecting rod 3, and the piston rod of the cylinder 7 and the connecting rod 3 are both fixedly connected to the corresponding connecting plate 8, and the connecting plate 8 is slidably connected to the bottom plate 6 through a guide rail slider structure, so that the connecting rod 3 can slide more stably.

[0032] In the actual product, the connecting rod 3 and the corresponding pressing sleeve 1 are fixed circumferentially to prevent the pressing sleeve 1 from rotating during the top hole process, so that the equipment can work more stably. Specifically, the inner hole of the pressing sleeve 1 is a polygonal hole, and the outer side of the retaining ring 3a is a polygon matching the polygonal hole, and the outer side of the retaining ring 3a is attached to the inner side of the pressing sleeve 1, so that a stable circumferential fit is formed between the pressing sleeve 1 and the connecting rod 3. Embodiment 2

[0033] The structure and principle of the second embodiment are basically the same as those of the first embodiment, except that: the inner walls of the two pressing sleeves 1 are both axially provided with strip grooves, and the ends of the two strip grooves that are far from each other are open, and the outer wall of the retaining ring 3a is provided with a slider matching the strip groove, and the slider is inserted into the corresponding strip groove. With the cooperation of the strip groove and the slider, a stable circumferential cooperation is also formed between the pressing sleeve 1 and the connecting rod 3.

[0034] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A top hole assembly in a copper tube top hole device, comprising a driving mechanism and two coaxially arranged push rods, the adjacent end surfaces of the two push rods are both extrusion surfaces, the extrusion surfaces are composed of an inclined surface (1a) and a vertical plane (1b) continuously distributed from top to bottom, a steel ball (2) is arranged between the two extrusion surfaces, and the characteristics are as follows: The push rod comprises a connecting rod (3) and a pressing sleeve (1) sleeved on the connecting rod (3); the adjacent ends of the two pressing sleeves (1) are both closed, and the adjacent end surfaces of the two pressing sleeves (1) are respectively the two extrusion surfaces, and the ends of the two pressing sleeves (1) that are far away from each other are both fixed with a limiting member (4); a retaining ring (3a) is formed on the outer wall of the connecting rod (3), and the two retaining rings (3a) are respectively located in the two pressing sleeves (1); a spring (5) is also provided in the two pressing sleeves (1), and the axes of the spring (5) and the pressing sleeve (1) are arranged in parallel; the retaining ring (3a) is located between the corresponding spring (5) and the corresponding limiting member (4), and one end of the spring (5) is pressed on the inner wall of the corresponding pressing sleeve (1); the driving mechanism is used to drive the two connecting rods (3) to move closer to or farther away from each other, and the retaining ring (3a) can be pressed on the other end of the corresponding spring (5) or the corresponding limiting member (4).

2. The top hole assembly in the copper tube top hole equipment according to claim 1 is characterized in that: The above-mentioned limiting member (4) is ring-shaped and is sleeved on the corresponding connecting rod (3).

3. The top hole assembly in the copper tube top hole equipment according to claim 2, characterized in that: The limiting member (4) is detachably fixedly connected to the corresponding pressing sleeve (1) via a threaded structure.

4. The top hole assembly in the copper tube top hole equipment according to claim 2 or 3, characterized in that: A circle of insertion holes (4a) is axially provided on the end surfaces of the two limit members (4) that are separated from each other.

5. The top hole assembly in the copper tube top hole equipment according to claim 3, characterized in that: The connecting rod (3) and the corresponding pressing sleeve (1) are fixed in the circumferential direction.

6. The top hole assembly in the copper tube top hole equipment according to claim 5, characterized in that: An annular step (1c) is provided on the inner walls of the ends of the two compression sleeves (1) that are separated from each other. The annular step (1c) is composed of an annular side wall and an annular bottom wall. The two limiting members (4) are respectively located in the two annular steps (1c), and the limiting members (4) are threadedly connected to the corresponding annular side walls.

7. The top hole assembly in the copper tube top hole equipment according to claim 6, characterized in that: The inner hole of the pressing sleeve (1) is a polygonal hole, the outer side surface of the retaining ring (3a) is a polygon matching the polygonal hole, and the outer side surface of the retaining ring (3a) is attached to the inner side surface of the pressing sleeve (1).

8. The top hole assembly in the copper tube top hole equipment according to claim 5, characterized in that: The inner side walls of the two compression sleeves (1) are both axially provided with strip grooves, and the ends of the two strip grooves that are separated from each other are open. The outer wall of the retaining ring (3a) is provided with a sliding block that matches the strip groove, and the sliding block is inserted into the corresponding strip groove.

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