CN216541715U

CN216541715U - Automatic insert elbow machine

Info

Publication number: CN216541715U
Application number: CN202123126961.1U
Authority: CN
Inventors: 龙晓斌; 龙晓明; 龙川
Original assignee: Oms Machinery Co Ltd
Current assignee: Oms Machinery Co Ltd
Priority date: 2021-12-13
Filing date: 2021-12-13
Publication date: 2022-05-17
Anticipated expiration: 2031-12-13

Abstract

The utility model discloses an automatic elbow inserting machine which comprises a rack, wherein a material distributing mechanism, a fixing mechanism and a material taking and inserting mechanism are arranged on the rack, the material distributing mechanism can arrange and divide heat exchange pipe elbows at intervals, the fixing mechanism is used for fixing a heat exchanger, and the material taking and inserting mechanism is used for taking out the heat exchange pipe elbows and inserting the heat exchange pipe elbows into the heat exchanger; the material taking and pipe inserting mechanism comprises an elbow box capable of sucking the heat exchange pipe elbow in vacuum, a displacement drive capable of driving the elbow box to move in the three-dimensional direction, and a deflection drive capable of driving the elbow box to deflect in the horizontal direction. The utility model has the advantages of high automation degree, simple structure, low cost, high working speed and high efficiency.

Description

Automatic insert elbow machine

Technical Field

The utility model relates to the technical field of heat exchanger machining and manufacturing equipment, in particular to an automatic elbow inserting machine.

Background

In the production process of the heat exchanger, the processes of inserting the elbow into the semi-finished heat exchanger are manually completed, the manual operation production efficiency is low, the product consistency is poor, along with the improvement of labor cost and the improvement of the requirements of workers on the working environment, the production line of enterprises is increasingly required to realize intelligent and automatic control, so that the automatic elbow inserting machine on the production line of the heat exchanger can be produced by transportation, and the automatic elbow inserting machine can automatically grab the elbow and insert the elbow into the copper pipe port of the semi-finished heat exchanger workpiece. The elbow inserting machine is an important device essential for realizing automation.

The existing elbow inserting machine (such as CN 109702721A) usually uses a complex and expensive manipulator to drive a non-rotatable cylinder clamping jaw, and has high cost, large control difficulty and high maintenance cost; the oblique insertion of the elbow is inconvenient. In addition, the cylinder clamping jaw is easy to damage the elbow.

The present invention has been made based on such a situation.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art, and provides the automatic elbow inserting machine which is simple in structure, low in cost, high in working speed and high in efficiency, has full automation and wide applicability, and can insert elbows positively and obliquely.

The utility model is realized by the following technical scheme:

in order to solve the technical problem, the utility model provides an automatic elbow inserting machine which comprises a rack, wherein a material distributing mechanism capable of arranging and distributing heat exchange pipe elbows at intervals, a fixing mechanism for fixing a heat exchanger and a material taking and inserting mechanism for taking out the heat exchange pipe elbows and inserting the heat exchange pipe elbows into the heat exchanger are arranged on the rack; the material taking and pipe inserting mechanism comprises an elbow box capable of vacuum absorbing the heat exchange pipe elbow, a displacement drive capable of driving the elbow box to move in the three-dimensional direction, and a deflection drive capable of driving the elbow box to deflect in the horizontal direction.

In order to further solve the technical problem to be solved by the utility model, in the automatic elbow inserting machine provided by the utility model, the elbow box comprises a box body, a sliding cavity with an opening at the lower end is arranged in the box body, a sliding block is arranged in the sliding cavity, an arc-shaped opening capable of being attached to the bent part of the elbow of the heat exchange tube is arranged at the lower end of the sliding block, an air pumping port capable of being connected with vacuum pumping equipment and air blowing equipment is arranged on the box body, and an air channel for connecting the air pumping port and the arc-shaped opening is arranged in the sliding block and the box body.

In order to further solve the technical problem to be solved by the utility model, in the automatic elbow inserting machine provided by the utility model, the elbow box further comprises a lifting driving piece which is connected to the box body and can drive the box body to lift.

In order to further solve the technical problem to be solved by the utility model, in the automatic elbow inserting machine provided by the utility model, a limiting structure is arranged between the box body and the sliding block.

In order to further solve the technical problem to be solved by the utility model, in the automatic elbow inserting machine provided by the utility model, the deflection drive comprises a fixed plate connected to the output end of the displacement drive and a movable plate connected to the elbow box; and a bearing for connecting the fixed plate and the movable plate and a rotary driving piece capable of driving the movable plate to rotate in the horizontal direction are arranged between the fixed plate and the movable plate.

In order to further solve the technical problem to be solved by the utility model, in the automatic elbow inserting machine provided by the utility model, the displacement drive comprises an X-axis drive, a Y-axis drive and a Z-axis drive, the Y-axis drive is connected to the frame, the X-axis drive is connected to the output end of the Y-axis drive, the Z-axis drive is connected to the output end of the X-axis drive, and the deflection drive is connected to the output end of the Z-axis drive.

In order to further solve the technical problem to be solved by the utility model, in the automatic elbow inserting machine provided by the utility model, the material distribution mechanism comprises a material arranging device and an upper fixing table, wherein a conveying track for conveying U-shaped elbows which are neatly arranged is arranged on the upper fixing table, a plurality of groups of pin assemblies are arranged at the front end of the conveying track, each group of pin assemblies comprises two pins arranged in the X direction, a lifting structure capable of driving the pin assemblies to lift is arranged below each pin assembly, and a distance adjusting structure capable of adjusting the distance between the adjacent pin assemblies is also arranged below each pin assembly; the spacing adjusting structure comprises adjusting bases and a spacing adjusting driver, wherein the adjusting bases are arranged below the contact pin assemblies respectively, and the spacing adjusting driver drives the adjusting bases to move in the Y direction; a movable connecting device is arranged between the adjacent adjusting bases; the distance between the adjacent adjusting bases is different when the adjacent adjusting bases move forwards and when the adjacent adjusting bases move backwards simultaneously.

In order to further solve the technical problem to be solved by the utility model, in the automatic elbow inserting machine provided by the utility model, the movable connecting device comprises a first movable pin and a second movable pin which are respectively arranged on two adjacent adjusting bases, a connecting plate for connecting the first movable pin and the second movable pin is arranged between the first movable pin and the second movable pin, a strip-shaped hole in the Y direction is arranged on the connecting plate, and one or both of the first movable pin and the second movable pin are inserted into the strip-shaped hole.

In order to further solve the technical problem to be solved by the utility model, in the automatic elbow inserting machine provided by the utility model, one side of the conveying track is provided with an interception plate for intercepting the heat exchange pipe elbow to limit the heat exchange pipe elbow to continuously slide, and an interception drive for driving the interception plate to move in the X direction.

In order to further solve the technical problem to be solved by the utility model, in the automatic elbow inserting machine provided by the utility model, the fixing mechanism comprises front and rear clamping plates for clamping the heat exchanger in the Y direction, a front and rear opening and closing drive for driving the front and rear clamping plates to move in the Y direction, left and right clamping plates arranged on the front and rear clamping plates for clamping the heat exchanger in the X direction, a left and right opening and closing drive for driving the left and right clamping plates to move in the X direction, and a height adjusting drive for driving the front and rear clamping plates and the left and right clamping plates to lift.

Compared with the prior art, the utility model has the following advantages:

1. the utility model has high automation degree, and the displacement drive is used for driving each elbow box to move in a three-dimensional space, and the deflection drive is used for adjusting the inclination angle of the elbow box in the horizontal direction. Therefore, as long as the angle of the elbow box is adjusted to be corresponding to the port of the heat exchange tube of the heat exchanger to be inserted, the elbow can be smoothly and quickly inserted no matter the tube is inserted in the X direction or the tube is inserted obliquely between the X direction and the Y direction. The utility model has simple structure, can realize the insertion of the elbow in various modes through the simple structure, does not need to adopt a manipulator with complex structure, has lower cost and is easier to control.

2. The conveying track is used for conveying the elbows which are regularly arranged; the contact pins of the contact pin assemblies are inserted into the corresponding elbows, and then the distance between the corresponding contact pin assemblies is adjusted by the distance adjusting structure, namely the distance between the elbows is adjusted, so that the grabbing mechanism can quickly clamp the plurality of elbows without mutual interference. The utility model has high automation degree, can quickly arrange and adjust the space between the elbows and has high arrangement quality; in addition, the utility model has fewer parts and simple structure, and the contact pin is directly arranged on the adjusting base without using an ejection structure.

3. The vacuum adsorption elbow and the blowing release elbow are utilized, the working speed is high, the elbow is not damaged, and the cost is low.

4. The U-shaped elbows are transversely arranged (the conveying track is in the Y direction, and two legs of the U-shaped elbow are in the X direction), so that the Y-direction size of the mechanism is not required to be very long, the size is smaller, and the structure is more compact; the grabbing mechanism can grab a plurality of U-shaped elbows more easily and simultaneously.

Drawings

The following detailed description of embodiments of the utility model is provided in conjunction with the appended drawings, in which:

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic perspective view of a part of the material separating mechanism;

FIG. 3 is a schematic cross-sectional view of a deflection drive portion;

figure 4 is a cross-sectional view of an elbow box;

fig. 5 is a perspective view of the fixing mechanism.

Detailed Description

In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings and the detailed description.

The automatic elbow inserting machine shown in fig. 1 to 5 comprises a machine frame 1, wherein a material distributing mechanism 2 capable of arranging and distributing heat exchange pipe elbows at intervals, a fixing mechanism 3 for fixing a heat exchanger and a material taking and pipe inserting mechanism 4 for taking out the heat exchange pipe elbows and inserting the heat exchange pipe elbows into the heat exchanger are arranged on the machine frame 1. The utility model works in this way, the material distributing mechanism 2 arranges the bent pipes orderly and divides the bent pipes into good intervals, the material taking and pipe inserting mechanism 4 moves to the material distributing mechanism 2, takes a plurality of bent pipes away at the same time, and then moves to the upper part of the fixing mechanism 3; meanwhile, the semi-finished heat exchanger is sent to the fixing mechanism 3 and clamped by the fixing mechanism 3; and then the material taking and pipe inserting mechanism 4 adjusts the position, and the elbows are aligned to the corresponding heat exchange pipe ports in sequence and are inserted downwards. High automation degree, high working speed and low cost.

The material taking and pipe inserting mechanism 4 comprises an elbow box 41 capable of vacuum sucking the heat exchange pipe elbow, a displacement drive 42 capable of driving the elbow box 41 to move in the three-dimensional direction, and a deflection drive 43 capable of driving the elbow box 41 to deflect in the horizontal direction.

The elbow box 41 adopted by the utility model can vacuum adsorb elbows, has high speed and is not easy to damage the elbows. Each elbow box 41 is driven to move in three-dimensional space by a shift drive 42. The inclination angle of the elbow box 41 in the horizontal direction is adjusted by the deflection driver 43, so that the elbow insertion can be smoothly and rapidly completed no matter the insertion tube is in the X direction or the insertion tube is inclined between the X direction and the Y direction as long as the angle of the elbow box 41 is adjusted to correspond to the port of the heat exchange tube to be inserted. The utility model has simple structure, can realize the insertion of the elbow in various modes through the simple structure, does not need to adopt a manipulator with complex structure, has lower cost and is easier to control.

In a more specific embodiment of the present invention, as shown in fig. 4, the elbow box 41 includes a box 411, a sliding cavity 4111 with an open lower end is arranged in the box 411, a sliding block 412 is arranged in the sliding cavity 4111, the sliding block 412 can slide up and down in the sliding cavity 4111, an arc-shaped opening 4121 capable of fitting with the curved portion of the elbow of the heat exchange tube is arranged at the lower end of the sliding block 412, a pumping port 4112 capable of being connected with a vacuum pumping device and an air blowing device is arranged on the box 411, and a gas passage 413 connecting the pumping port 4112 and the arc-shaped opening 4121 is arranged in the sliding block 412 and the box 411. Specifically, when the elbow is grabbed, vacuum suction is started, the sliding block 412 is retracted into the box 411, the box 411 is close to enable the adsorption port 4121 at the lower end of the sliding block 412 to be attached to the elbow, and the elbow is adsorbed and taken away under the action of negative pressure vacuum; when inserting the elbow, the elbow box inserts the elbow into the heat exchange tube of the heat exchanger, at the moment, the vacuum suction is closed, the air blowing is started, the lower end of the sliding block 412 extends out of the box body 411, the elbow is firmly pressed in the heat exchange tube of the heat exchanger and does not move, (when the air blowing is performed, the sliding block 412 can tightly push the elbow downwards under the pushing of the air), then the elbow box is retracted, the box body 411 is completely lifted and separated, the sliding block 412 is taken away together (a limit structure is arranged between the two to limit the sliding block 412 to slide in a certain range without separation), the sliding block 412 is separated from the elbow, the elbow is left in the heat exchange tube, and therefore the elbow inserting operation is completed. The action is simple, the speed is high, the stroke is short, the volume is small, and the compactness is improved. Because of adopting negative pressure absorption and blowing release, the absorption and the release are faster, the suction is firmer and more reliable, and the cost is lower.

In a more specific embodiment of the present invention, the elbow box 41 further includes a lifting driving member 414 connected to the box 411 for driving the box 411 to lift. The lift drive 414 is preferably a pneumatic cylinder. After the elbow box 41 is close to the upper part of the heat exchange tube to be inserted, the box 411 is driven by the lifting driving member 414 to be inserted downwards (i.e. the box 411 moves downwards to insert the elbow into the end of the heat exchange tube). The stroke of the process is relatively small, so it is better to drive the box 411 to move up and down by the lifting driving member 414, rather than relying on the displacement driving member 42 (Z-axis driving member 423) to drive the elbow box 41 to move up and down.

In a more specific embodiment of the present invention, a limiting structure 415 is disposed between the box 411 and the sliding block 412 for limiting the sliding range of the sliding block 412, avoiding unnecessary idle stroke, and preventing the sliding block 412 from disengaging. As shown in fig. 4, the position-limiting structure 415 specifically includes a strip-shaped hole provided in the slider 412 in the up-down direction, and a position-limiting pin provided on the box 411.

In a more specific embodiment of the present invention, as shown in fig. 3, the deflection driver 43 includes a fixed plate 431 connected to the output end of the displacement driver 42, and a movable plate 432 connected to the elbow box 41; and a bearing 433 for connecting the fixed plate 431 and the movable plate 432, and a rotary driving member 434 for driving the movable plate 432 to rotate horizontally are disposed between the fixed plate 431 and the movable plate 432. The rotary drive 434 is preferably a drive motor; the bearing 433 is preferably a slewing bearing. The output end of the displacement driver 42 is connected to the fixed plate 431, the fixed plate 431 is connected to the movable plate 432 through the bearing 433, the rotary driver 434 is mounted on the fixed plate 431, the output end of the rotary driver 434 can drive the movable plate 432 to rotate (through a gear, a crank, and other mechanisms), and the rotation of the movable plate 432 means that each elbow box 41 deflects in the horizontal direction.

In a more specific embodiment of the present invention, as shown in fig. 1, the shift driver 42 includes an X-axis driver 421, a Y-axis driver 422 and a Z-axis driver 423, and the Y-axis driver 422 is connected to the frame 1, the X-axis driver 421 is connected to an output end of the Y-axis driver 422, the Z-axis driver 423 is connected to an output end of the X-axis driver 421, and the yaw driver 43 is connected to an output end of the Z-axis driver 423. The X-axis drive 421, the Y-axis drive 422, and the Z-axis drive 423 are common mechanisms and will not be described here.

In a more specific embodiment of the present invention, as shown in fig. 1 and fig. 2, the material distributing mechanism 2 includes a material arranging device 21 (such as a vibration tray), and an upper fixing table 22, wherein a conveying rail 23 for conveying U-shaped bends arranged in order is arranged on the upper fixing table 22, the U-shaped bends slide back and forth on the conveying rail 23, and the conveying rail 23 may be one or more in an X-direction side by side arrangement. A plurality of groups of pin assemblies are arranged at the front end of the conveying track 23, each group of pin assemblies comprises two pins 24 arranged in the X direction, a lifting structure 25 capable of driving the pin assemblies to lift is arranged below each pin assembly, and a distance adjusting structure capable of adjusting the distance between every two adjacent pin assemblies is further arranged below each pin assembly; the spacing adjusting structure comprises an adjusting base 26 and a spacing adjusting driver 27, wherein the adjusting base 26 is arranged below the pin inserting assemblies respectively, and the spacing adjusting driver drives the adjusting base 26 to move in the Y direction; a movable connecting device 28 is arranged between the adjacent adjusting bases 26; the distance between the adjacent adjustment bases 26 is different when they are moved forward at the same time and when they are moved backward at the same time. The conveying track 23 is utilized to convey the orderly arranged elbows; the pins 24 of the pin components are inserted into the corresponding elbows, and the spacing of the corresponding pin components is adjusted by the spacing adjusting structure, namely, the spacing between the elbows is adjusted, so that the grabbing mechanism can quickly clamp a plurality of elbows without mutual interference. The utility model has high automation degree, can quickly arrange and adjust the space between the elbows and has high arrangement quality; in addition, the utility model has few parts and simple structure, and the contact pin 24 is directly arranged on the adjusting base 26 without using an ejection structure.

In addition, the U-shaped elbows of the utility model are transversely arranged (the conveying track 23 is in Y direction, and two legs of the U-shaped elbow are in X direction), the size of the mechanism in Y direction does not need to be very long, the volume is smaller, and the structure is more compact; the grabbing mechanism can grab a plurality of U-shaped elbows more easily and simultaneously.

The articulating mechanism 28 may be other structures such as a flexible cord, in addition to the preferred use of the structure described in detail below.

In a more specific embodiment of the present invention, the movable connection device 28 includes a first movable pin 281 and a second movable pin 282 respectively disposed on two adjacent adjustment bases 26, a connection plate 283 is disposed between the first movable pin 281 and the second movable pin 282 for connecting the two, a Y-direction strip-shaped hole 2831 is disposed on the connection plate 283, and one or both of the first movable pin 281 and the second movable pin 282 are inserted into the strip-shaped hole 2831. Thus, when the adjacent adjusting bases 26 move backwards (Y direction) at the same time, the distance between the two is reduced, so that the distance between the adjacent pin assemblies can be matched with the distance between the adjacent elbows on the conveying track 23, and each pin 24 can correspond to the position of each elbow respectively; when the adjacent adjusting bases 26 move forward simultaneously, the distance between the two is increased due to the strip-shaped holes 2831, that is, the distance between the elbows is adjusted, so that the grabbing mechanism can take the elbows away.

In a more specific embodiment of the present invention, one side of the conveying rail 23 is provided with an interception plate 29 intercepting the heat exchange pipe bends to limit the heat exchange pipe bends from further sliding, and an interception driving 291 driving the interception plate 29X to move. First, the blocking plate 29 is inwardly extended and blocked at the front part of the conveying track 23, the U-shaped bend is advanced forward in order to reach the front end of the conveying track 23 (the position of the blocking plate 29), then the plurality of groups of pins 24 are all inserted into the corresponding bends in an ascending manner, the blocking plate 29 is retracted, and the pitch adjusting structure starts to adjust the pitch of the adjusting bases 26. When the adjusted part of the elbow slides out of the conveying track 23, the interception plate 29 extends inwards to intercept other elbows and avoid the other elbows being washed out. This is repeated.

In a more specific embodiment of the present invention, the fixing mechanism 3 includes front and rear clamp plates 31 for Y-clamping the heat exchanger, a front and rear opening/closing drive 32 for Y-actuating the front and rear clamp plates 31, left and right clamp plates 33 provided on the front and rear clamp plates 31 for X-clamping the heat exchanger, a left and right opening/closing drive 34 for X-actuating the left and right clamp plates 33, and a height adjustment drive 35 for raising and lowering the front and rear clamp plates 31 and the left and right clamp plates 33. The heat exchanger is vertical after being sent, the front clamping plate 31 and the rear clamping plate 31 are firstly descended and sleeved on the heat exchanger, at the moment, the front clamping plate 31 and the rear clamping plate 31 clamp the heat exchanger from the Y direction, and the left clamping plate 33 and the right clamping plate 33 clamp the heat exchanger from the two sides of the X direction. Simple structure and firm clamping.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. The utility model provides an automatic insert elbow machine which characterized in that: the heat exchanger comprises a rack (1), wherein a material distribution mechanism (2) capable of arranging and distributing heat exchange tube elbows at intervals, a fixing mechanism (3) for fixing a heat exchanger and a material taking and inserting mechanism (4) for taking out the heat exchange tube elbows and inserting the heat exchange tube elbows into the heat exchanger are arranged on the rack (1); the material taking and pipe inserting mechanism (4) comprises an elbow box (41) capable of vacuum absorbing the heat exchange pipe elbow, a displacement drive (42) capable of driving the elbow box (41) to move in the three-dimensional direction, and a deflection drive (43) capable of driving the elbow box (41) to deflect in the horizontal direction.

2. An automatic elbow inserting machine according to claim 1, characterized in that: elbow casket (41) includes casket body (411), be equipped with lower extreme open-ended smooth chamber (4111) in casket body (411), be equipped with slider (412) in smooth chamber (4111), slider (412) lower extreme is equipped with arc opening (4121) that can laminate with heat exchange tube elbow bending part, be equipped with on casket body (411) and can be connected extraction opening (4112) with evacuation equipment and gas blowing equipment, be equipped with gas channel (413) of connecting extraction opening (4112) and arc opening (4121) in slider (412) and casket body (411).

3. An automatic elbow inserting machine according to claim 2, characterized in that: the elbow box (41) further comprises a lifting driving piece (414) which is connected to the box body (411) and can drive the box body (411) to lift.

4. An automatic elbow inserting machine according to claim 2, characterized in that: a limiting structure (415) is arranged between the box body (411) and the sliding block (412).

5. An automatic elbow inserting machine according to claim 1, characterized in that: the deflection drive (43) comprises a fixed plate (431) connected to the output end of the displacement drive (42) and a movable plate (432) connected to the elbow box (41); and a bearing (433) for connecting the fixed plate (431) and the movable plate (432) and a rotary driving member (434) capable of driving the movable plate (432) to rotate in the horizontal direction are arranged between the fixed plate (431) and the movable plate (432).

6. An automatic elbow inserting machine according to claim 1, characterized in that: the displacement drive (42) comprises an X-axis drive (421), a Y-axis drive (422) and a Z-axis drive (423), the Y-axis drive (422) is connected to the frame (1), the X-axis drive (421) is connected to the output end of the Y-axis drive (422), the Z-axis drive (423) is connected to the output end of the X-axis drive (421), and the deflection drive (43) is connected to the output end of the Z-axis drive (423).

7. An automatic elbow inserting machine according to claim 1, characterized in that: the material distribution mechanism (2) comprises a material arranging device (21) and an upper fixing table (22), a conveying rail (23) used for conveying the U-shaped elbows which are arranged neatly is arranged on the upper fixing table (22), a plurality of groups of pin assemblies are arranged at the front end of the conveying rail (23), each group of pin assemblies comprises two pins (24) arranged in the X direction, a lifting structure (25) capable of driving the pin assemblies to lift is arranged below each pin assembly, and a distance adjusting structure capable of adjusting the distance between every two adjacent pin assemblies is further arranged below each pin assembly; the spacing adjusting structure comprises an adjusting base (26) and a spacing adjusting driver (27), wherein the adjusting base (26) is arranged below the pin inserting assembly respectively, and the spacing adjusting driver drives the adjusting base (26) to move in the Y direction; a movable connecting device (28) is arranged between the adjacent adjusting bases (26); the distance between adjacent adjustment bases (26) is different when they move simultaneously forward and when they move simultaneously backward.

8. An automatic elbow inserting machine according to claim 7, characterized in that: the movable connecting device (28) comprises a first movable pin (281) and a second movable pin (282) which are respectively arranged on two adjacent adjusting bases (26), a connecting plate (283) for connecting the first movable pin (281) and the second movable pin (282) is arranged between the first movable pin (281) and the second movable pin (282), a Y-direction strip-shaped hole (2831) is formed in the connecting plate (283), and one or both of the first movable pin (281) and the second movable pin (282) are inserted into the strip-shaped hole (2831).

9. An automatic elbow inserting machine according to claim 7, characterized in that: and one side of the conveying track (23) is provided with an interception plate (29) for intercepting the heat exchange tube elbow to limit the heat exchange tube elbow to continuously slide, and an interception drive (291) for driving the interception plate (29) to move in the X direction.

10. An automatic elbow inserting machine according to any one of claims 1 to 9, characterized in that: the fixing mechanism (3) comprises a front clamping plate (31) and a rear clamping plate (31) which are used for clamping the heat exchanger in the Y direction, a front opening and closing drive (32) which is used for driving the front clamping plate and the rear clamping plate (31) to move in the Y direction, a left clamping plate (33) and a right clamping plate (33) which are arranged on the front clamping plate and the rear clamping plate (31) and are used for clamping the heat exchanger in the X direction, a left opening and closing drive (34) which is used for driving the left clamping plate and the right clamping plate (33) to move in the X direction, and a height adjusting drive (35) which is used for driving the front clamping plate and the rear clamping plate (31) and the left clamping plate and the right clamping plate (33) to move up and down.