Pipe tapping machine

Abstract

The present invention relates to the field of hardware processing. A pipe tapping machine comprises a frame, a feeding mechanism arranged on the frame, a positioning and conveying mechanism for receiving pipes from the output end of the feeding mechanism, and a positioning fixture and a self-feeding drill installed on the frames on both sides of the positioning and conveying mechanism; the feeding mechanism comprises two feeding trays, the two feeding trays are arranged oppositely on the frames on both sides of the positioning and conveying mechanism, and the two feeding trays are combined above the positioning and conveying mechanism to construct a material trough for storing pipes, and a feeding channel communicating with the material trough is constructed on the feeding tray; when the pipe is in the material trough, the two ends of the pipe are respectively positioned on the feeding trays on both sides. The pipe tapping machine of this patent can realize automatic feeding, conveying, clamping and tapping of pipes; realize automated processing, and have high processing efficiency.

Description

Technical Field

[0001] The invention relates to the field of hardware processing, in particular to a pipe tapping machine. Background Art

[0002] In the field of household storage in kitchens, bathrooms and bedrooms, metal storage racks such as pull-out baskets and hangers made of hardware are often used, such as a storage hanger involved in announcement number CN204306574U. Tubular metal parts are often used in such metal storage racks, such as Figure 1 The pipe fitting 100 required to be processed in this case is shown in FIG. 1 ; such a tubular metal fitting needs to be tapped at the end to form a threaded hole, which is more convenient during installation.

[0003] The existing pipe tapping equipment can refer to a metal pipe end processing device recorded in the announcement number "CN215146655U", including a workbench, a control component, a tapping mechanism and a driving mechanism. The workbench is externally provided with a work table. The control component includes a housing, a bearing installed in the inner cavity of the housing, a control rod installed in the bearing and a knob switch connected to the control rod. The tapping mechanism includes a tapping part and a grinding part. During operation, the operator needs to place metal pipe ends of different models on the inner side of the fixed outer frame, and then use a pressing piece to press down along the inside of the fixed outer frame and control the stability of the metal pipe end. According to the size of the inner cavity of the metal pipe end during use, the tapping block and the range of the side plate extending outward can be controlled to complete the tapping of metal pipe ends of different models and sizes.

[0004] However, the above-mentioned existing pipe tapping equipment is only suitable for processing shorter pipes, but not for processing longer pipes, because it only clamps and fixes the ends of metal pipes. Using the above structure to process the ends of long pipes can easily cause deformation of the long pipes. Moreover, it can only tap one end of the pipe, which is not suitable for automatic tapping.

[0005] Furthermore, in order to realize automatic tapping processing of such pipe fittings, it is necessary to realize automatic feeding and conveying of long pipe fittings, but the prior art lacks a feeding and conveying device suitable for long pipe fittings. Summary of the invention

[0006] In order to solve the above problems, the purpose of the present invention is to provide a pipe tapping machine that can realize automatic feeding, conveying, clamping and tapping of pipes; realize automated processing with high processing efficiency.

[0007] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions:

[0008] A pipe tapping machine comprises a frame, a feeding mechanism arranged on the frame, a positioning and conveying mechanism for receiving pipes from the output end of the feeding mechanism, and a positioning fixture and a self-feeding drill installed on the frames on both sides of the positioning and conveying mechanism; the feeding mechanism comprises two feeding trays, the two feeding trays are arranged on the frames on both sides of the positioning and conveying mechanism opposite to each other, and the two feeding trays are combined above the positioning and conveying mechanism to form a material trough for storing pipes, and a feeding channel communicating with the material trough is constructed on the feeding tray; when the pipe is in the material trough, the two ends of the pipe are respectively positioned on the feeding trays on both sides; the positioning and conveying mechanism comprises at least two rotating positioning trays The circulating conveyor belts are located on the frame, and the two circulating conveyor belts are arranged at intervals and connected to realize synchronous rotation; the conveying path of the circulating conveyor belt passes through the discharge end of the feed channel, and a positioning groove for embedding the pipe fitting is constructed on the surface of the belt body of the circulating conveyor belt, and the end of the pipe fitting extends out of the positioning groove of the circulating conveyor belt; the positioning fixture includes a movable seat that is lifted and lowered on the frame outside the circulating conveyor belt, and a fixed seat arranged above the movable seat; the movable seat is provided with a clamping groove that can support the end of the pipe fitting, and can rise to combine with the clamping groove of the fixed seat to form a clamping opening for positioning the pipe fitting; the drill bit of the self-feed drilling rig faces the clamping opening of the positioning fixture.

[0009] The present invention adopts the above technical solution, which relates to a pipe tapping machine. The frame of the pipe tapping machine is provided with a feeding mechanism, a positioning and conveying mechanism, and positioning fixtures on both sides thereof and a self-feeding drill.

[0010] The feeding mechanism includes two feeding trays, which are arranged opposite to each other and are combined to form a trough for storing pipe fittings. When the pipe fittings are placed in the trough, at least two ends of the pipe fittings are supported by the two feeding trays. The pipe fittings in the trough are arranged and sent out along the feeding channel and received by the positioning conveying mechanism at the bottom. The positioning conveying mechanism includes two rotating and positioning circulating conveyor belts. The belt surface of the circulating conveyor belt is provided with a positioning groove for embedding the pipe fittings. When the pipe fittings fall from the feeding channel, they are received by the circulating conveyor belt. The positions near the ends of the two sides of the pipe fittings are respectively inserted into the positioning grooves and the ends thereof extend out of the positioning grooves, so that the two ends of the pipe fittings are supported and the feeding is realized by synchronously rotating the two circulating conveyor belts.

[0011] When the circulating conveyor belt transports the pipe fittings into the processing station, the movable seat rises upward from the bottom of the circulating conveyor belt and supports the end of the pipe fitting until it docks with the fixed seat. At this time, the two ends of the pipe fitting are respectively positioned in the clamping openings of the positioning fixtures on both sides; finally, the drill bit of the self-feed drilling rig can perform tapping operations on the ends of the pipe fittings.

[0012] Based on the above structure, the pipe tapping machine can realize automatic feeding, conveying, clamping and tapping of pipes, and realize automated processing with high processing efficiency.

[0013] Preferably, the feed channel is connected to the lower end of the trough, and the lower end surface of the trough of the feed tray is constructed as an inclined surface facing the feed channel. In this solution, the lower end surface of the trough is constructed as an inclined surface, which is conducive to guiding the pipes in the trough to move toward the feed channel.

[0014] Preferably, a dredging assembly is provided on the frame below the trough; the dredging assembly includes a supporting top cylinder provided between the two circulating conveyor belts, and a dredging push rod connected to the output end of the supporting top cylinder; the supporting top surface of the dredging push rod is constructed in an arc shape. In this scheme, a dredging assembly is provided, and the supporting top cylinder in the dredging assembly can drive the dredging push rod to move, so that the dredging push rod can be pushed into the trough between the two feed trays, and convey multiple pipes when they are stuck in the trough, thereby ensuring smooth feeding of the pipes. Furthermore, the supporting top surface of the dredging push rod is constructed in an arc shape, which is more conducive to dredging pipes.

[0015] Preferably, the front and rear ends of the frame are respectively rotatably positioned with a driving roller and a driven roller, and the two circulating conveyor belts are sleeved on the driving roller and the driven roller; the frame is provided with a driving motor for driving the driving roller; the front and rear ends of the frame are both provided with bearing seats, and both ends of the driving roller and the driven roller are positioned on the bearing seats on both sides. In this solution, the driving motor uses the driving roller and the driven roller to synchronously drive the two circulating conveyor belts.

[0016] Preferably, a clamp bracket is provided on the outer frame of the circulating conveyor belt, the fixed seat is fixed to the upper end of the clamp bracket, and the movable seat is movably provided on the clamp bracket below the fixed seat; a clamp cylinder is provided at the lower end of the clamp bracket, and the output end of the clamp cylinder is connected to the movable seat. In this solution, the clamp cylinder drives the movable seat to move longitudinally along the clamp bracket, so that the movable seat can be controlled to move relative to the fixed seat, and the opening and closing control of the positioning clamp is realized.

[0017] Preferably, the movable seat and the fixed seat are both provided with two matching clamping grooves, and the self-feeding drill is provided with two drill bits facing the two clamping openings of the positioning fixture respectively. In this solution, two clamping openings and two drill bits are used to achieve simultaneous tapping of two pipe fittings, which has higher processing efficiency.

[0018] Preferably, the fixing seat is also connected with a pipeline for introducing tapping emulsion. In this solution, tapping emulsion is introduced into the positioning fixture before the drill bit performs tapping, which plays a role of lubrication and cooling.

[0019] Preferably, two sets of lateral moving pairs are arranged on the racks on both sides of the positioning and conveying mechanism, and the positioning fixtures, self-feeding drills and feed trays on both sides are respectively installed on the two sets of lateral moving pairs, and the lateral moving pairs can drive the positioning fixtures, self-feeding drills and feed trays on both sides to be relatively close or far away. In this solution, the use of two sets of lateral moving pairs can adjust the spacing between the positioning fixtures and self-feeding drills on both sides, which is suitable for processing pipes of different lengths.

[0020] Preferably, the frame is provided with a plurality of slide rails transversely, and the transverse moving pair is slidably provided on the slide rails; screw rods are provided for rotation and positioning below the two transverse moving pairs, and the two screw rods are linked; a sleeve is provided at the lower end of the transverse moving pair, which is threadedly sleeved on the screw rod, and a handle is connected to the end of the screw rod on one side. In this scheme, the two groups of transverse moving pairs adopt a double-screw synchronous structure to realize the synchronous adjustment of the two groups of transverse moving pairs, which is not only more convenient to operate, but also can make the moving distances of the two groups of transverse moving pairs equal, so that the positioning and conveying mechanism is always in the middle. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The pipe structure diagram processed by the invention is shown.

[0022] Figure 2 This is a front view of the pipe tapping machine.

[0023] Figure 3 It is a schematic diagram of the top surface structure of the pipe tapping machine.

[0024] Figure 4 It is a schematic diagram of the local structure of the pipe tapping machine.

[0025] Figure 5 This is a schematic diagram of the structure of the positioning fixture. DETAILED DESCRIPTION

[0026] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0027] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0028] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "plurality" means two or more, unless otherwise clearly specified.

[0029] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be 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 it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0031] like Figures 2~5 As shown, this embodiment relates to a pipe tapping machine, including a frame 1, a feeding mechanism 2 arranged on the frame 1, a positioning and conveying mechanism 3 that receives the pipe 100 from the output end of the feeding mechanism 2, and a positioning fixture 4 and a self-feeding drill rig 5 installed on the frame 1 on both sides of the positioning and conveying mechanism 3.

[0032] like Figure 2 and 4As shown, the feeding mechanism 2 includes two feeding trays 21, which are arranged on the frames 1 on both sides of the positioning and conveying mechanism 3 in opposite directions, and the two feeding trays 21 are combined to form a trough 20 for storing pipe fittings 100 above the positioning and conveying mechanism 3, and a feeding channel 24 communicating with the trough 20 is constructed on the feeding trays 21. As shown in the figure, the feeding tray 21 only includes a side wall 22 and a rib 23 arranged along the edge of the side wall 22, and the rib 23 is not arranged at the upper end of the side wall 22, so that the pipe fittings 100 can be placed in the trough 20 from the upper end. The feeding channel 24 is connected to the lower end of the trough 20, and the lower end surface of the trough 20 of the feeding tray 21 is constructed as an inclined surface facing the feeding channel 24. In this scheme, no other supporting components are arranged between the two feeding trays 21, which is conducive to arranging the positioning and conveying mechanism 3 between the two feeding trays 21. When the pipe 100 is in the trough 20 , only the two ends of the pipe 100 are positioned on the feed trays 21 on both sides, and the lower end surface of the trough 20 is constructed as an inclined surface, which is conducive to guiding the pipe 100 in the trough 20 to move toward the feed channel 24 .

[0033] In a further solution, since the above solution is prone to jamming when placing more pipes 100 in the trough 20, that is, multiple pipes 100 support each other and are no longer transported to the feed channel 24. Therefore, a dredging component 6 is set on the frame 1 below the trough 20, and the dredging component 6 includes a supporting cylinder 61 and a dredging push rod 62 connected to the output end of the supporting cylinder 61. The supporting cylinder 61 is set between the two circulating conveyor belts of the positioning and conveying mechanism 3, and the supporting surface of the dredging push rod 62 is constructed as an arc shape. In this solution, a dredging component 6 is set, and the supporting cylinder 61 in the dredging component 6 can drive the dredging push rod 62 to move, so that the dredging push rod 62 can be pushed into the trough 20 between the two feed trays 21, and transport when multiple pipes 100 are stuck in the trough 20, thereby ensuring smooth feeding of the pipes 100. Furthermore, the supporting top surface of the unclogging push rod 62 is constructed into an arc shape, which is more conducive to unclogging the pipe 100.

[0034] The pipes 100 in the trough 20 are arranged and sent out along the feed channel 24 and received by the positioning and conveying mechanism 3 at the bottom.

[0035] like Figure 3 and 4As shown, the positioning and conveying mechanism 3 includes at least two circulating conveyor belts 31 rotatably positioned on the frame 1, and the two circulating conveyor belts 31 are arranged at intervals and connected to realize synchronous rotation. Specifically, the front and rear ends of the frame 1 are respectively rotatably positioned with a driving roller 32 and a driven roller 33, and the two circulating conveyor belts 31 are sleeved on the driving roller 32 and the driven roller 33. Both sides of the front and rear ends of the frame 1 are provided with bearing seats 34, and both ends of the driving roller 32 and the driven roller 33 are positioned on the bearing seats 34 on both sides. The frame 1 is provided with a driving motor 35 for driving the driving roller 32, and the driving motor 35 uses the driving roller 32 and the driven roller 33 to synchronously drive the two circulating conveyor belts 31. The conveying path of the circulating conveyor belt 31 passes through the discharge end of the feed channel 24, and a positioning groove 311 for embedding the pipe 100 is constructed on the belt body surface of the circulating conveyor belt 31, and the end of the pipe 100 extends out of the positioning groove 311 of the circulating conveyor belt 31.

[0036] like Figure 5 As shown, the positioning fixture 4 includes a movable seat 41 that is lifted and lowered on the outer frame 1 of the circulating conveyor belt 31, and a fixed seat 42 that is arranged above the movable seat 41. Specifically, a fixture bracket 43 is arranged on the outer frame 1 of the circulating conveyor belt 31, the fixed seat 42 is fixed to the upper end of the fixture bracket 43, and the movable seat 41 is movably arranged on the fixture bracket 43 below the fixed seat 42. A fixture cylinder 44 is arranged at the lower end of the fixture bracket 43, and the output end of the fixture cylinder 44 is connected to the movable seat 41. In this solution, the fixture cylinder 44 drives the movable seat 41 to move longitudinally along the fixture bracket 43, so that the movable seat 41 can be controlled to move relative to the fixed seat 42, thereby realizing the opening and closing control of the positioning fixture 4.

[0037] The movable seat 41 is provided with a clamping groove 40 capable of supporting the end of the pipe 100, and can rise to form a clamping opening for positioning the pipe 100 in combination with the clamping groove 40 of the fixed seat 42. In a further preferred embodiment, the movable seat 41 and the fixed seat 42 are both provided with two matching clamping grooves 40, and the movable seat 41 and the fixed seat 42 can form two clamping openings when combined.

[0038] The drill bit of the self-feeding drill 5 faces the clamping opening of the positioning fixture 4. When the positioning fixture 4 is provided with two clamping openings, the self-feeding drill 5 is provided with two drill bits 51 facing the two clamping openings of the positioning fixture 4 respectively. The self-feeding drill 5 in this scheme is a prior art in the field of machine tool processing and can be purchased on the market. It is not an innovation point of this case, so it is not detailed; using two clamping openings and two drill bits 51, two pipe fittings 100 can be tapped at the same time, and the processing efficiency is higher.

[0039] Furthermore, since the fixed seat 42 is located above the movable seat 41 and is fixedly arranged, a pipeline for introducing tapping emulsion is also connected to the fixed seat 42. Before the drill bit 51 performs tapping, the tapping emulsion is first introduced into the positioning fixture 4 to achieve lubrication and cooling.

[0040] The pipe fitting 100 tapping machine based on the above structure can realize the automatic feeding, conveying, clamping and tapping of the pipe fitting 100, realize the automated processing, and have high processing efficiency. The specific processing steps for the pipe fitting 100 are as follows:

[0041] 1. Manually place multiple pipes 100 in a horizontal manner in the trough 20 of the feeding mechanism 2, and the two ends of the pipes 100 are respectively positioned on the feeding plates 21 on both sides. The pipes 100 enter the feeding channel 24 from the bottom of the trough 20 and are sent out through the feeding channel 24;

[0042] 2. When the pipe 100 falls from the feed channel 24, it is received by the circulating conveyor belt 31. The positions near the ends of both sides of the pipe 100 are respectively inserted into the positioning grooves 311 and the ends thereof extend out of the positioning grooves 311;

[0043] 3. When the circulating conveyor belt 31 delivers the pipe 100 to the processing station, the movable seat 41 is lifted upward from the bottom of the circulating conveyor belt 31 and holds the end of the pipe 100 until it docks with the fixed seat 42. At this time, the two ends of the pipe 100 are respectively positioned in the clamping openings of the positioning fixtures 4 on both sides;

[0044] 4. Pass the tapping emulsion to wet the end of the pipe 100;

[0045] 5. The drill bit 51 of the self-feed drilling machine 5 can perform tapping operation on the end of the pipe 100.

[0046] The above-mentioned pipe fitting 100 tapping machine can already realize the tapping processing of both ends of the pipe fitting 100, and further in order to make the equipment suitable for processing pipe fittings 100 of different lengths. In this scheme, two sets of lateral moving pairs 7 are arranged on the frame 1 on both sides of the positioning and conveying mechanism 3, and the positioning fixtures 4, self-feeding drill rigs 5 and feed tray 21 on both sides are respectively installed on the two sets of lateral moving pairs 7, and the lateral moving pairs 7 can drive the positioning fixtures 4, self-feeding drill rigs 5 and feed tray 21 on both sides to be relatively close or far away. In this scheme, the use of two sets of lateral moving pairs 7 can adjust the spacing between the positioning fixtures 4 and the self-feeding drill rigs 5 on both sides, which is suitable for processing pipe fittings 100 of different lengths.

[0047] Furthermore, a plurality of slide rails 11 are transversely arranged on the frame 1, and the transverse moving pair 7 is slidably arranged on the slide rails 11. A screw rod 12 is rotatably positioned below each of the two transverse moving pairs 7, and the two screw rods 12 are linked. A sleeve 71 is provided at the lower end of the transverse moving pair 7 and is threadedly sleeved on the screw rod 12, and a handle 13 is connected to the end of the screw rod 12 on one side. In this scheme, the two groups of transverse moving pairs 7 adopt a double-screw synchronous structure to realize the synchronous adjustment of the two groups of transverse moving pairs 7, which is not only more convenient to operate, but also can make the moving distances of the two groups of transverse moving pairs 7 equal, thereby making the positioning and conveying mechanism 3 always in the middle.

[0048] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0049] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention without departing from the principles and intent of the present invention.

Claims

1. A pipe tapping machine, comprising a frame (1), a feeding mechanism (2) arranged on the frame (1), a positioning and conveying mechanism (3) receiving the pipe (100) from the output end of the feeding mechanism (2), and a positioning fixture (4) and a self-feeding drill (5) installed on the frames (1) on both sides of the positioning and conveying mechanism (3); characterized in that: The feeding mechanism (2) comprises two feeding trays (21), the two feeding trays (21) are arranged oppositely on the frames (1) on both sides of the positioning and conveying mechanism (3), and the two feeding trays (21) are combined to form a material trough (20) for storing the pipe fittings (100) above the positioning and conveying mechanism (3), and a feeding channel (24) communicating with the material trough (20) is formed on the feeding trays (21); when the pipe fittings (100) are in the material trough (20), the two ends of the pipe fittings (100) are respectively positioned on the feeding trays (21) on both sides; the positioning and conveying mechanism (3) comprises at least two circulating conveyor belts (31) rotatably positioned on the frames (1), the two circulating conveyor belts (31) are arranged at intervals and connected to realize synchronous rotation; the conveying path of the circulating conveyor belt (31) passes through At the discharge end of the feed channel (24), a positioning groove (311) for embedding the pipe (100) is constructed on the surface of the belt body of the circulating conveyor (31), and the end of the pipe (100) protrudes from the positioning groove (311) of the circulating conveyor (31); the positioning fixture (4) comprises a movable seat (41) which is arranged on the outer frame (1) of the circulating conveyor (31) and is lifted and lowered, and a fixed seat (42) is arranged above the movable seat (41); the movable seat (41) is provided with a clamping groove (40) capable of supporting the end of the pipe (100), and can rise to form a clamping opening for positioning the pipe (100) in combination with the clamping groove (40) of the fixed seat (42); the drill bit (51) of the self-feeding drill (5) faces the clamping opening of the positioning fixture (4); The feed channel (24) is connected to the lower end of the material trough (20), and the lower end surface of the material trough (20) of the feed tray (21) is constructed as an inclined surface facing the feed channel (24); A dredging assembly (6) is disposed on the frame (1) below the trough (20); the dredging assembly (6) comprises a supporting top cylinder (61) disposed between the two circulating conveyor belts (31), and a dredging top rod (62) connected to the output end of the supporting top cylinder (61); the supporting top surface of the dredging top rod (62) is constructed in an arc shape; A clamp bracket (43) is arranged on the outer frame (1) of the circulating conveyor belt (31); a fixed seat (42) is fixed to the upper end of the clamp bracket (43); a movable seat (41) is movably arranged on the clamp bracket (43) below the fixed seat (42); a clamp cylinder (44) is arranged at the lower end of the clamp bracket (43); an output end of the clamp cylinder (44) is connected to the movable seat (41); two matching clamping grooves (40) are arranged on the movable seat (41) and the fixed seat (42); and two drill bits (51) are arranged on the self-feeding drilling machine (5) and face the two clamping openings of the positioning clamp (4) respectively.

2. A pipe tapping machine according to claim 1, characterized in that: The front and rear ends of the frame (1) are respectively provided with a driving roller (32) and a driven roller (33) for rotational positioning, and the two circulating conveyor belts (31) are both sleeved on the driving roller (32) and the driven roller (33); the frame (1) is provided with a driving motor (35) for driving the driving roller (32); the front and rear ends of the frame (1) are both provided with bearing seats (34), and both ends of the driving roller (32) and the driven roller (33) are both positioned on the bearing seats (34) on both sides.

3. A pipe tapping machine according to claim 1, characterized in that: The fixing seat (42) is also connected to a pipeline for introducing tapping emulsion.

4. A pipe tapping machine according to claim 1, characterized in that: Two sets of transverse moving pairs (7) are arranged on the frames (1) on both sides of the positioning and conveying mechanism (3); the positioning fixtures (4), the self-feeding drill (5) and the feed tray (21) on both sides are respectively mounted on the two sets of transverse moving pairs (7); the transverse moving pairs (7) can drive the positioning fixtures (4), the self-feeding drill (5) and the feed tray (21) on both sides to move relatively closer or farther away.

5. A pipe tapping machine according to claim 4, characterized in that: A plurality of slide rails (11) are transversely arranged on the frame (1), and the transverse moving pair (7) is slidably arranged on the slide rails (11); screw rods (12) are rotatably positioned below the two transverse moving pairs (7), and the two screw rods (12) are linked to each other; a sleeve portion (71) is provided at the lower end of the transverse moving pair (7) and is threadedly sleeved on the screw rod (12), and a handle (13) is connected to the end of the screw rod (12) on one side.

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