Reducing hole drawing equipment

Abstract

The utility model relates to reducing hole drawing equipment, which belongs to the technical field of hole drawing equipment and comprises a supporting table, a fixing frame is arranged on the upper surface of the supporting table, and a first electric push rod is arranged on the upper surface of the fixing frame through a mounting frame. According to the variable-diameter hole drawing equipment, the position of an opening faces forwards, at the moment, a first electric push rod can be started to drive a lower pressing block to move downwards and limit and fix a pipeline, and during hole drawing, a second electric push rod can be started to drive a movable positioning pipe to move into the pipeline; when a fixing hole in the right side of the front face of the movable positioning pipe is located in the back face of a pipeline opening, a third electric push rod on the right side can be started to drive a hole pulling forming head on the right side to move forwards, hole pulling is conducted on the pipeline opening, and then a flanging is formed. By arranging no less than two hole drawing forming heads with different sizes, hole drawing of different hole diameters can be conveniently carried out on the pipeline.

Description

Technical Field

[0001] This utility model relates to the technical field of hole-pulling equipment, specifically a variable-diameter hole-pulling device. Background Technology

[0002] A hole-drawing machine is a mechanical device specifically designed for flanging processes on pipes. It is widely used in copper pipe processing in the solar energy, air conditioning, and refrigerator industries to meet the processing needs of copper pipes for different electrical appliances.

[0003] For example, Chinese patent CN209189565U discloses an oil separator hole-pulling device, belonging to the field of hole-pulling. It includes a hole-pulling machine and a pulling die. The hole-pulling machine includes a frame and a hole-pulling device mounted on the frame. The hole-pulling device includes a mounting plate mounted on the upper plate of the frame and a motor. A groove is provided in the mounting plate along the X-axis direction. A slider is mounted on the motor and inserted into the groove, matching its shape. The pulling die includes a pulling head and a fixed mold with an arc groove mounted on the upper plate of the frame. A circular hole is provided in the arc groove. The front end of the pulling head has a shrinking structure, and its tail end is equipped with a pulling rod. When the hole-pulling device is working, the output shaft of the motor passes through the circular hole and works in conjunction with the pulling head. This invention can accurately and efficiently perform hole-pulling and flange-flanging work on the oil separator, producing through-hole flanges with uniform wall thickness and consistent height, which is beneficial for subsequent processing of the oil separator.

[0004] Although the aforementioned patent can accurately and efficiently perform hole-pulling and flange-flanging work on oil separators, producing through-hole flanges with uniform wall thickness and consistent height, which is beneficial for subsequent processing of oil separators, the hole-pulling device in this patent uses a fixed single-pump device, which is not convenient for pulling holes of different diameters in pipelines, thus reducing its practicality. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a variable diameter hole-pulling device, which has the advantages of facilitating the pulling of different diameter holes in pipelines. It solves the problem that the number of pulling heads in a hole-pulling device is only one, which is not convenient for pulling holes of different sizes, thus reducing its practicality.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a variable diameter hole-pulling device, including a support platform, a fixed frame provided on the upper surface of the support platform, a first electric push rod provided on the upper surface of the fixed frame via a mounting bracket, the outer side of the output shaft of the first electric push rod slidingly passing through the fixed frame and extending into the interior, a pressing block provided on the outer side of the output shaft of the first electric push rod, a placement block provided on the upper surface of the support platform, a hole-pulling mechanism provided on the left side of the upper surface of the support platform, and a connecting mechanism provided on the upper surface of the support platform;

[0007] The hole-pulling mechanism includes a second electric push rod, a movable positioning tube, at least two fixed holes, at least two hole-pulling forming heads, and at least two third electric push rods. The second electric push rod is mounted on the left side of the upper surface of the support platform via a support block. The movable positioning tube is located outside the output shaft of the second electric push rod. The at least two fixed holes are all located on the front side of the movable positioning tube. The at least two third electric push rods are all located on the back wall of the inner cavity of the movable positioning tube. The at least two hole-pulling forming heads are all located outside the output shaft of the at least two third electric push rods. The hole-pulling forming heads are slidably connected to the inside of the fixed holes.

[0008] By adopting this technical solution, it is convenient to perform drilling of different diameter holes in the pipeline.

[0009] Furthermore, at least two of the fixing holes are evenly distributed on the front side of the movable positioning tube.

[0010] By adopting this technical solution, the size of the fixing hole increases sequentially from left to right.

[0011] Furthermore, an arc-shaped groove is provided on the side of the placement block and the pressing block opposite to each other.

[0012] By adopting this technical solution, the pipe can be clamped and fixed by placing the block and pressing the block.

[0013] Furthermore, the connecting mechanism includes a fourth electric push rod, a moving block, a motor, a rotating rod, a fixed cylinder, a moving rod, and a deburring blade. The fourth electric push rod is disposed on the upper surface of the support platform, the moving block is disposed on the outside of the output shaft of the fourth electric push rod, the lower surface of the moving block is in contact with the upper surface of the support platform, and the motor is disposed on the front of the moving block.

[0014] By adopting this technical solution, the connecting mechanism can process the end faces of holes with different diameters, making the end faces flat.

[0015] Furthermore, the rotating rod is rotatably connected to the back of the moving block via a bearing, the front of the rotating rod rotates through the moving block and is fixedly connected to the outside of the motor output shaft, the fixed cylinder is disposed on the back of the rotating rod, the moving rod is fixed inside the fixed cylinder by bolts, and the burr cutter is disposed on the right side of the moving rod.

[0016] By adopting this technical solution, the end face of the burr hole can be made flat by rotating the burr cutter.

[0017] Furthermore, the movable rod is fitted with a gap between itself and the fixed cylinder, and the movable rod moves linearly left and right inside the fixed cylinder.

[0018] By adopting this technical solution, the position of the moving rod can be adjusted to the left or right inside the fixed cylinder.

[0019] Furthermore, the upper surface of the support platform is provided with two sliding grooves, and a slider is slidably connected inside the sliding groove. The upper surfaces of the sliders on the left and right sides are fixedly connected to the left and right sides of the lower surface of the moving block.

[0020] By adopting this technical solution, the stability of the moving block's forward and backward movement can be improved through the interaction between the two sliding grooves and the two sliders.

[0021] Furthermore, the movable block is located on the front of the placement block, and the fourth electric push rod is located on the front of the motor.

[0022] By adopting this technical solution, the fourth electric push rod can drive the moving block to move back and forth.

[0023] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0024] 1. This variable diameter hole-pulling device can drill holes in pipes, either circular or elliptical. The drilled pipe is then placed on the upper surface of the placement block with the opening facing forward. The first electric push rod is then activated, moving the lower pressure block downwards and fixing the pipe in place. During hole pulling, the second electric push rod is activated, moving the moving positioning tube into the pipe. When the fixing hole on the right side of the moving positioning tube is located behind the hole in the pipe, the third electric push rod on the right side is activated, moving the hole-pulling head on the right side forward to pull the hole in the pipe, forming a flange. By setting at least two hole-pulling heads of different sizes, it is convenient to pull holes of different diameters in the pipe.

[0025] 2. After the hole-drawing process is completed, the fourth electric push rod can be activated to move the moving block. The rotating rod moves the burr cutter to the end face of the hole. At this time, the motor can be started again. The rotating burr cutter can process the end face of the hole, making the end face of the hole flat. At the same time, by turning the bolts on the back of the fixed cylinder, the position of the right end of the moving rod can be adjusted, and thus the position of the burr cutter can be adjusted. This allows for the processing of the end faces of holes with different diameters, making the end face flat. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of this utility model;

[0027] Figure 2 This is a schematic diagram of the hole-pulling mechanism of this utility model;

[0028] Figure 3This is a schematic diagram of the connection mechanism of this utility model;

[0029] Figure 4 This is a schematic diagram of the connection structure between the rotating rod and the fixed cylinder of this utility model.

[0030] In the diagram: 1. Support platform; 2. Fixing frame; 3. First electric push rod; 4. Lowering block; 5. Placement block; 6. Hole-pulling mechanism; 61. Second electric push rod; 62. Moving positioning tube; 63. Fixing hole; 64. Hole-pulling forming head; 65. Third electric push rod; 7. Connecting mechanism; 71. Fourth electric push rod; 72. Moving block; 73. Motor; 74. Rotating rod; 75. Fixing cylinder; 76. Moving rod; 77. Deburring knife. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Please see Figure 1 This embodiment of a variable diameter hole-pulling device includes a support platform 1. A fixed frame 2 is provided on the upper surface of the support platform 1. A first electric push rod 3 is provided on the upper surface of the fixed frame 2 via a mounting bracket. The outer side of the output shaft of the first electric push rod 3 slides through the fixed frame 2 and extends into it. A pressing block 4 is provided on the outer side of the output shaft of the first electric push rod 3. A placement block 5 is provided on the upper surface of the support platform 1. A hole-pulling mechanism 6 is provided on the left side of the upper surface of the support platform 1. The hole-pulling mechanism 6 facilitates hole-pulling of pipes with different diameters. A connecting mechanism 7 is provided on the upper surface of the support platform 1. The connecting mechanism 7 can process the hole-pulling end face of different diameters to make the end face flat.

[0033] In this embodiment, arc-shaped grooves are provided on the opposite side of the placement block 5 and the pressing block 4. The pipe is drilled by the drilling device on the outside, and then the hole is pulled out.

[0034] It should be noted that the pipe can be drilled with a circular or elliptical hole, and then the drilled pipe is placed on the upper surface of the placement block 5 with the opening facing forward. At this time, the first electric push rod 3 can be activated to drive the lower pressure block 4 to move downward and limit and fix the pipe.

[0035] Please see Figure 2To facilitate the extraction of different diameter holes in the pipe, the extraction mechanism 6 in this embodiment includes a second electric push rod 61, a movable positioning tube 62, at least two fixed holes 63, at least two extraction forming heads 64, and at least two third electric push rods 65. The second electric push rod 61 is mounted on the left side of the upper surface of the support platform 1 via a support block. The movable positioning tube 62 is located outside the output shaft of the second electric push rod 61. At least two fixed holes 63 are all located on the front side of the movable positioning tube 62. At least two third electric push rods 65 are all located on the back wall of the inner cavity of the movable positioning tube 62. At least two extraction forming heads 64 are all located outside the output shaft of the at least two third electric push rods 65. The extraction forming heads 64 are slidably connected inside the fixed holes 63.

[0036] In this embodiment, no fewer than two fixing holes 63 are evenly distributed on the front of the movable positioning tube 62, and no fewer than two hole-forming heads 64 have diameters that increase sequentially from left to right. Different hole diameters can be extracted from the pipe through hole-forming heads 64 of different sizes.

[0037] It should be noted that when the movable positioning tube 62 is moved to the right and into the inside of the pipe, and the fixing hole 63 on the right side of the movable positioning tube 62 is located behind the pipe opening, the third electric push rod 65 on the right side can be activated to drive the hole-pulling forming head 64 on the right side to move forward and pull the hole at the pipe opening, and then form a flange. By setting no less than two hole-pulling forming heads 64 of different sizes, it is convenient to pull holes of different diameters in the pipe.

[0038] Please see Figures 3 to 4 In order to process the end faces of holes with different diameters and make the end faces flat, the connecting mechanism 7 in this embodiment includes a fourth electric push rod 71, a moving block 72, a motor 73, a rotating rod 74, a fixed cylinder 75, a moving rod 76, and a deburring knife 77. The fourth electric push rod 71 is disposed on the upper surface of the support platform 1, the moving block 72 is disposed on the outside of the output shaft of the fourth electric push rod 71, the lower surface of the moving block 72 is in contact with the upper surface of the support platform 1, and the motor 73 is disposed on the front of the moving block 72.

[0039] In this embodiment, the rotating rod 74 is rotatably connected to the back of the moving block 72 via a bearing. The front of the rotating rod 74 rotates through the moving block 72 and is fixedly connected to the outside of the output shaft of the motor 73. The fixed cylinder 75 is disposed on the back of the rotating rod 74. The moving rod 76 is fixed inside the fixed cylinder 75 by bolts. The burr cutter 77 is disposed on the right side of the moving rod 76.

[0040] In this embodiment, the movable rod 76 and the fixed cylinder 75 are fitted with a gap, and the movable rod 76 moves linearly left and right inside the fixed cylinder 75. The upper surface of the support platform 1 is provided with two sliding grooves, and the sliding grooves are slidably connected to the sliding blocks. The upper surfaces of the left and right sliding blocks are fixedly connected to the left and right sides of the lower surface of the movable block 72. The movable block 72 is located in front of the placement block 5, and the fourth electric push rod 71 is located in front of the motor 73.

[0041] In this embodiment, after the hole is pulled out, the fourth electric push rod 71 can be started to move the moving block 72, and the rotating rod 74 can move the burr cutter 77. It can be moved to the end face of the hole. At this time, the motor 73 can be started again, and the motor 73 can drive the rotating rod 74 and the burr cutter 77 to rotate.

[0042] It should be noted that by rotating the burr cutter 77 to process the end face of the hole, the end face of the hole can be made flat. At the same time, by turning the bolt on the back of the fixed cylinder 75, the position of the right end of the moving rod 76 can be adjusted, and thus the position of the burr cutter 77 can be adjusted. This allows for the processing of the end face of holes with different diameters, making the end face flat.

[0043] The working principle of the above embodiments is as follows:

[0044] (1) A hole can be made in the pipe. The hole can be round or elliptical. Then the pipe with the hole is placed on the upper surface of the placement block 5 with the opening facing forward. At this time, the first electric push rod 3 can be started to drive the lower pressure block 4 to move downward and limit and fix the pipe. When the hole is pulled, the second electric push rod 61 can be started to drive the moving positioning tube 62 to move to the right and move into the inside of the pipe. When the fixing hole 63 on the right side of the moving positioning tube 62 is located on the back of the pipe hole, the third electric push rod 65 on the right side can be started to drive the hole pulling head 64 on the right side to move forward and pull the hole at the opening of the pipe, and then form a flange. By setting no less than two hole pulling heads 64 of different sizes, it is convenient to pull holes of different diameters in the pipe.

[0045] (2) After the hole is pulled, the fourth electric push rod 71 can be started to drive the moving block 72 to move, and the rotating rod 74 can drive the burr cutter 77 to move. It can be moved to the end face of the hole. At this time, the motor 73 can be started again. The motor 73 drives the rotating rod 74 and the burr cutter 77 to rotate. The burr cutter 77 is rotated to process the end face of the hole, so that the end face of the hole can be flat. At the same time, by turning the bolt on the back of the fixed cylinder 75, the position of the right end of the moving rod 76 can be adjusted, and the position of the left and right sides of the burr cutter 77 can be adjusted, so that the end face of the hole with different diameters can be processed to make the end face flat.

Claims

1. A variable diameter hole-drawing device, comprising a support platform (1), characterized in that: The upper surface of the support platform (1) is provided with a fixing frame (2), and the upper surface of the fixing frame (2) is provided with a first electric push rod (3) through a mounting frame. The outer side of the output shaft of the first electric push rod (3) slides through the fixing frame (2) and extends into the interior. The outer side of the output shaft of the first electric push rod (3) is provided with a pressing block (4). The upper surface of the support platform (1) is provided with a placement block (5). The left side of the upper surface of the support platform (1) is provided with a hole-pulling mechanism (6). The upper surface of the support platform (1) is provided with a connecting mechanism (7). The hole-pulling mechanism (6) includes a second electric push rod (61), a movable positioning tube (62), at least two fixed holes (63), at least two hole-pulling forming heads (64), and at least two third electric push rods (65). The second electric push rod (61) is set on the left side of the upper surface of the support platform (1) through a support block. The movable positioning tube (62) is set on the outside of the output shaft of the second electric push rod (61). At least two fixed holes (63) are all opened on the front of the movable positioning tube (62). At least two third electric push rods (65) are all set on the back wall of the inner cavity of the movable positioning tube (62). At least two hole-pulling forming heads (64) are all set on the outside of the output shaft of the at least two third electric push rods (65). The hole-pulling forming head (64) is slidably connected to the inside of the fixed hole (63).

2. The variable diameter hole-drawing device according to claim 1, characterized in that: No fewer than two of the fixing holes (63) are evenly distributed on the front side of the movable positioning tube (62).

3. The variable diameter hole-drawing device according to claim 1, characterized in that: The placement block (5) and the pressing block (4) are both provided with arc-shaped grooves on the opposite side.

4. The variable diameter hole-drawing device according to claim 1, characterized in that: The connecting mechanism (7) includes a fourth electric push rod (71), a moving block (72), a motor (73), a rotating rod (74), a fixed cylinder (75), a moving rod (76), and a burr cutter (77). The fourth electric push rod (71) is disposed on the upper surface of the support platform (1). The moving block (72) is disposed on the outside of the output shaft of the fourth electric push rod (71). The lower surface of the moving block (72) is in contact with the upper surface of the support platform (1). The motor (73) is disposed on the front of the moving block (72).

5. A variable diameter hole-drawing device according to claim 4, characterized in that: The rotating rod (74) is rotatably connected to the back of the moving block (72) via a bearing. The front of the rotating rod (74) rotates through the moving block (72) and is fixedly connected to the outside of the output shaft of the motor (73). The fixed cylinder (75) is located on the back of the rotating rod (74). The moving rod (76) is fixed inside the fixed cylinder (75) by bolts. The burr cutter (77) is located on the right side of the moving rod (76).

6. A variable diameter hole-drawing device according to claim 4, characterized in that: The movable rod (76) is fitted with the fixed cylinder (75) with a gap, and the movable rod (76) moves linearly left and right inside the fixed cylinder (75).

7. A variable diameter hole-drawing device according to claim 4, characterized in that: The upper surface of the support platform (1) is provided with two sliding grooves, and a slider is slidably connected inside the sliding groove. The upper surfaces of the sliders on the left and right sides are fixedly connected to the left and right sides of the lower surface of the moving block (72).

8. A variable diameter hole-drawing device according to claim 4, characterized in that: The movable block (72) is located on the front of the placement block (5), and the fourth electric push rod (71) is located on the front of the motor (73).

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