Fixture for drawing oxygen-free copper pipe

Abstract

The utility model relates to the technical field of work fixtures, and discloses a fixture for drawing an oxygen-free copper pipe, the outer side of a shaft rod of each group of butt-clamping screw rod is sleeved with a guide sliding table which is in guide with a guide sliding rail, the front end of a rack of each guide sliding table is provided with a butt-clamping support arm which penetrates through a fixture table, the top end of an arm rod of each butt-clamping support arm is provided with a clamping plate, and the clamping plate is connected with the guide sliding table. A tapping drill bit is arranged at one end of a shaft rod of the propelling screw. According to the utility model, the copper pipe blank to be drawn can be subjected to four-point crisscross butt clamping and fixing work by utilizing crisscross butt clamping and fixing of the butt clamping and positioning mechanism, so that the clamping and fixing uniformity and firmness of the copper pipe blank are improved, and the tapping drill bit is drilled into the copper pipe blank by utilizing the drilling tool while the copper pipe blank is subjected to butt clamping and positioning; a double-fixing state can be formed, selective butt-clamping and fixing work is carried out on the copper pipe blank, and the situation that the copper pipe blank slides and falls off under the action of strong pulling force is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of tooling fixtures, in particular to a fixture for drawing an oxygen-free copper tube. Background Art

[0002] The metal drawing process is carried out on a metal sheet drawing machine. During metal drawing or drawing, the metal sheet or blank is drawn through a drawing punch. The diameter of the metal material is changed by drawing to achieve the required diameter requirement. It is widely used in the drawing and forming of metal materials such as copper tubes, stainless steel tubes, and titanium wires. Especially for copper tubes, the oxygen-free copper tubes prepared by the drawing process have the advantages of strong stability, high precision, elimination or reduction of tensile stress on the wire surface, etc. In the process of drawing the oxygen-free copper tube, it is usually necessary to use relatively The corresponding clamp is used to clamp and fix the copper rod blank to facilitate stable drawing. For example, as shown in the existing patent technology: After searching, the China Patent Network discloses a fixing clamp for copper tube drawing (public announcement number CN212349909U). When this type of device clamps and positions the copper tube raw material, the position of the adjustment plate can be adjusted by driving the motor and the limit column and other structures, thereby adjusting the position of the lower clamping plate, so that the upper clamping plate moves toward the lower clamping plate to form a clamping state, thereby facilitating the fixing of copper tubes of different diameters and facilitating the drawing of the copper tube.

[0003] However, the copper tube drawing fixtures used in the aforementioned patents and the existing market still have some shortcomings: the existing method of clamping the copper tube blank with two sets of clamping plates has limited contact area and clamping orientation with the copper tube blank, which makes the clamping of the copper tube blank unstable and easily causes the copper tube blank to slip and fall off under strong pulling force, resulting in poor clamping stability. To address this issue, those skilled in the art have provided a clamp for oxygen-free copper tube drawing to address the problems raised in the above background technology. Utility Model Content

[0004] The main purpose of the utility model is to provide a clamp for drawing an oxygen-free copper tube, which can effectively solve the problem of poor clamping stability of the copper tube blank by the existing copper tube drawing clamp in the background technology.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is as follows: a clamp for drawing oxygen-free copper tubes, comprising a support platform and a connecting seat installed on one side of the support platform, the upper end of the support of the connecting seat is connected to a clamping positioning mechanism, and the other side of the support platform is symmetrically provided with a pull rod mechanism connected to the clamping positioning mechanism;

[0006] The clamping positioning mechanism includes a clamping table installed on the upper end of the connecting seat support, and four groups of clamping screw rods are symmetrically connected in a cross manner inside the box frame of the clamping table, and four groups of guide slides are provided at the bottom of the box frame of the clamping table along the axis direction of the clamping screw rods. The outer side of the axis of each group of the clamping screw rods is provided with a guide slide guided by the guide slide, and the front end of the guide slide is provided with a clamping support arm passing through the clamping table, a splint is provided at the top of the arm rod of the clamping support arm, and a telescopic screw sleeve is installed in the middle of the back plate of the splint, the inside of the telescopic screw sleeve is screwed with a push screw, and a tapping drill bit is provided at one end of the axis rod of the push screw.

[0007] As a further solution of the present invention: a transmission motor is installed in the middle of the box frame of the clamping table, and a bevel gear B is provided at the output end of the transmission motor, and a bevel gear A meshing with the bevel gear B is provided at one end of the shaft rod of each set of the clamping screw rods.

[0008] As a further solution of the present invention: a tapping slot is provided through the middle of the plate frame of the splint and is connected to the tapping drill bit.

[0009] As a further solution of the present invention: a knob nut is provided at the other end of the shaft of the advancement screw.

[0010] As a further solution of the present invention: the pull rod mechanism includes an arm force sleeve, and threaded sleeves are symmetrically provided at both ends of the arm force sleeve, and a telescopic screw is screwed inside the threaded sleeve of each group of threaded sleeves, and the top ends of the shafts of the two groups of telescopic screws are respectively provided with hanging seats connected to the support platform and the clamp platform.

[0011] As a further solution of the present invention: the threads of the two groups of threaded sleeves are arranged symmetrically in forward and reverse directions relative to the central axis of the arm force sleeve.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. When the oxygen-free copper tube is drawn, the utility model can perform four-point, cross-clamping and fixing work on the copper tube blank to be drawn by utilizing the cross-clamping and fixing of the clamping positioning mechanism, thereby improving the uniformity and firmness of the clamping of the copper tube blank. At the same time, when the copper tube blank is clamped and positioned, a tapping drill bit is drilled into the interior of the copper tube blank by utilizing a drill tool, thereby forming a double fixing state, thereby preventing the copper tube blank from sliding and falling off under the action of strong pulling force. On the one hand, it can ensure the stability of the copper tube blank drawing, and on the other hand, it can adapt to the drawing work of copper tube blanks of different thicknesses, and perform selective clamping and fixing work on the copper tube blank according to the tensile strength of the copper tube blank.

[0014] 2. When the clamp is used to position the drawn blank of the oxygen-free copper tube, the utility model can form a stable triangular bracket structure under the side pull of the pull rod mechanism by utilizing the fixed-point support of the connecting seat, thereby improving the force stability of the clamp, and by utilizing the telescopic adjustment performance of the pull rod mechanism, the clamping angle of the clamp can be adjusted in pitch with the connecting seat as the fulcrum to adapt to different working environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic structural diagram of a clamp for drawing oxygen-free copper tubes according to the present invention;

[0016] Figure 2 This is a schematic plan view of a clamp for drawing an oxygen-free copper tube according to the present invention;

[0017] Figure 3 This is a structural diagram of a clamping and positioning mechanism in a clamp for drawing oxygen-free copper tubes according to the present invention;

[0018] Figure 4 This utility model is a clamp for drawing oxygen-free copper tubes Figure 3 A magnified schematic diagram of point A in the middle;

[0019] Figure 5 The utility model is a structural schematic diagram of a draw rod mechanism in a clamp for drawing an oxygen-free copper tube.

[0020] In the figure: 1. Support platform; 2. Connecting seat; 3. Pull rod mechanism; 31. Arm force sleeve; 32. Threaded sleeve; 33. Telescopic screw; 34. Hanging seat; 4. Clamping table; 5. Clamping plate; 6. Clamping screw; 7. Guide rail; 8. Guide slide; 9. Bevel gear A; 10. Transmission motor; 11. Bevel gear B; 12. Clamping arm; 13. Telescopic sleeve; 14. Advance screw; 15. Knob nut; 16. Tapping drill bit. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0022] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," "the other end," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "connected," etc. should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0024] Please refer to Figure 1-5 As shown, a clamp for drawing an oxygen-free copper tube comprises a support platform 1 and a connecting seat 2 installed on one side of the support platform 1. The upper end of the support of the connecting seat 2 is connected to a clamping positioning mechanism. The clamping positioning mechanism comprises a clamping platform 4 installed on the upper end of the support of the connecting seat 2. The inside of the box frame of the clamping platform 4 is symmetrically connected with four groups of clamping screw rods 6 in a cross-shaped manner, and the bottom of the box frame of the clamping platform 4 is provided with four groups of guide rails 7 along the axis direction of the clamping screw rods 6. A transmission motor 10 is installed in the middle of the box frame of the clamping platform 4, and the transmission motor 1 0 is provided with a bevel gear B11 at the output end, and a bevel gear A9 meshing with the bevel gear B11 is provided at one end of the shaft of each set of clamping screw rods 6. When the oxygen-free copper tube is drawn, when the copper tube blank is placed between the four sets of clamping plates 5, the transmission motor 10 is controlled to work, driving the bevel gear B11 to rotate, and the bevel gear B11 is meshed with the bevel gear A9 to drive the four sets of clamping screw rods 6 to rotate. As a power source, the four sets of clamping plates 5 are driven to clamp, and the copper tube blank is fixed in a four-point, cross-clamping manner.

[0025] The outer side of the shaft of each set of clamping screw rods 6 is sleeved with a guide slide 8 guided by the guide rail 7, and the front end of the guide slide 8 is provided with a clamping support arm 12 that passes through the clamping table 4, and the top of the arm rod of the clamping support arm 12 is provided with a clamping plate 5. During the rotation of the clamping screw rods 6, the threads of the two horizontally opposite sets of clamping screw rods 6 can be set to positive and reverse forms in advance, so that the horizontally opposite clamping screw rods 6 push the corresponding guide slide 8 to slide symmetrically along the guide rail 7 during the rotation, and then push the four sets of clamping support arms 12 to slide symmetrically, so that the four sets of clamping plates 5 are clamped, and the copper tube blank is firmly clamped and fixed.

[0026] A telescopic screw sleeve 13 is installed in the middle of the back plate of the splint 5, and a pushing screw 14 is screwed inside the telescopic screw sleeve 13, and one end of the shaft of the pushing screw 14 is provided with a tapping drill bit 16. A tapping slot that is conductive to the tapping drill bit 16 is opened through the middle of the plate frame of the splint 5, and a knob nut 15 is provided at the other end of the shaft of the pushing screw 14. During the drawing process of the oxygen-free copper tube, after the copper tube blank is clamped and fixed, when the copper tube blank is large, the drill tool can be pushed into the knob nut 15, driving the pushing screw 14 to spirally advance along the telescopic screw sleeve 13, and then pushing the tapping drill bit 16 to spirally advance and drill into the interior of the copper tube blank, forming a double fixing work in the horizontal and vertical directions with the splint 5 to prevent the copper tube blank from sliding or falling off under strong pulling force, so that it can adapt to the drawing work of copper tube blanks of different sizes.

[0027] The other side of the platform of the support table 1 is symmetrically provided with a pull rod mechanism 3 connected to the clamping positioning mechanism. The pull rod mechanism 3 includes an arm force sleeve 31. The two ends of the sleeve of the arm force sleeve 31 are symmetrically provided with threaded sleeves 32, and the inside of the threaded sleeve of each group of threaded sleeves 32 is screwed with a telescopic screw 33. The top ends of the shafts of the two groups of telescopic screws 33 are respectively provided with hanging seats 34 connected to the support table 1 and the clamp table 4. By utilizing the fixed-point support of the connecting seat 2, under the side pull of the pull rod mechanism 3, a stable triangular bracket structure can be formed with the clamp table 4 to improve the force stability of the clamp.

[0028] The threads of the two sets of threaded sleeves 32 are arranged symmetrically in positive and negative directions relative to the central axis of the arm sleeve 31. During the drawing process of the oxygen-free copper tube, the arm sleeve 31 can be rotated to drive the threaded sleeves 32 at both ends to rotate. The positive and negative threads of the two sets of threaded sleeves 32 can be used to extend and push the two sets of telescopic screws 33 in a symmetrical and synchronous manner to adjust the length of the pull rod mechanism 3. Then, while adjusting the extension and contraction, the clamping angle of the clamp table 4 is adjusted in pitch with the connecting seat 2 as the fulcrum to adapt to the positioning of the copper tube blanks in different working environments.

[0029] The working principle of the present invention is as follows: when the oxygen-free copper tube is being drawn, when the copper tube blank is placed between the four groups of clamping plates 5, the transmission motor 10 is controlled to work, driving the bevel gear B11 to rotate, and the bevel gear B11 is meshed with the bevel gear A9 to drive the four groups of clamping screw rods 6 to rotate. During the rotation process, the horizontally opposite clamping screw rods 6 push the corresponding guide slides 8 to slide symmetrically along the guide rails 7, and then push the four groups of clamping arms 12 to slide symmetrically, so that the four groups of clamping plates 5 are clamped, and the copper tube blank is firmly clamped and fixed, so that the oxygen-free copper tube drawing work is carried out stably. When the copper tube blank is large, the drill tool can be pushed into the knob nut 15 to drive the advancement screw 14 along the telescopic screw The sleeve 13 is spirally advanced, and then the tapping drill bit 16 is spirally advanced to drill into the interior of the copper tube blank, forming a double fixation in the horizontal and vertical directions with the splint 5 to improve the positioning stability of the copper tube blank. In the subsequent use process, when it is necessary to calibrate the angle of the clamp, the arm force sleeve 31 can be rotated to drive the threaded sleeves 32 at both ends to rotate, and the two sets of telescopic screws 33 can be telescoped and pushed in a symmetrical and synchronous manner by utilizing the positive and negative threads of the two sets of threaded sleeves 32 to adjust the length of the pull rod mechanism 3. Then, while adjusting the telescopic adjustment, the connecting seat 2 is used as the fulcrum to adjust the pitch angle of the clamping table 4 so that the clamp maintains a suitable angle for pulling and positioning.

[0030] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A clamp for drawing an oxygen-free copper tube, comprising a support platform (1) and a connecting seat (2) mounted on one side of the support platform (1), characterized in that: The upper end of the support of the connecting seat (2) is connected to a clamping positioning mechanism, and the other side of the platform of the supporting platform (1) is symmetrically provided with a pull rod mechanism (3) connected to the clamping positioning mechanism; The clamping positioning mechanism comprises a clamping table (4) installed on the upper end of the support of the connecting seat (2), the box frame of the clamping table (4) has four groups of clamping screw rods (6) symmetrically connected in a cross manner inside, and the bottom of the box frame of the clamping table (4) is provided with four groups of guide rails (7) along the axis direction of the clamping screw rods (6), the outer side of the axis of each group of the clamping screw rods (6) is sleeved with a guide slide (8) guided by the guide rail (7), and the front end of the frame of the guide slide (8) is provided with a clamping support arm (12) passing through the clamping table (4), the top end of the arm of the clamping support arm (12) is provided with a clamping plate (5), and a telescopic screw sleeve (13) is installed in the middle of the back plate of the clamping plate (5), the inside of the telescopic screw sleeve (13) is screwed with a propulsion screw rod (14), and a tapping drill bit (16) is provided at one end of the axis of the propulsion screw rod (14).

2. The clamp for drawing an oxygen-free copper tube according to claim 1, characterized in that: A transmission motor (10) is installed in the middle of the box frame of the clamping table (4), and a bevel gear B (11) is arranged at the output end of the transmission motor (10), and a bevel gear A (9) meshing with the bevel gear B (11) is arranged at one end of the shaft rod of each set of the clamping screw rods (6).

3. The clamp for drawing an oxygen-free copper tube according to claim 1, characterized in that: A tapping slot which is in communication with a tapping drill bit (16) is provided through the middle of the plate frame of the clamping plate (5).

4. The clamp for drawing an oxygen-free copper tube according to claim 1, characterized in that: The other end of the shaft of the advancement screw (14) is provided with a knob nut (15).

5. The clamp for drawing an oxygen-free copper tube according to claim 1, characterized in that: The pull rod mechanism (3) comprises an arm force shaft sleeve (31), the two ends of the sleeve of the arm force shaft sleeve (31) are symmetrically provided with threaded sleeves (32), and the threaded sleeves of each group of threaded sleeves (32) are screwed with telescopic screws (33) inside, and the top ends of the shafts of the two groups of telescopic screws (33) are respectively provided with hanging seats (34) connected to the support platform (1) and the clamping platform (4).

6. The clamp for drawing an oxygen-free copper tube according to claim 5, characterized in that: The threads of the two groups of threaded sleeves (32) are arranged symmetrically in positive and negative directions relative to the central axis of the arm shaft sleeve (31).

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