Turning device for automobile heat exchanger connector

Abstract

The invention provides an automobile heat exchanger connector turning device which comprises a lathe, a spindle box is arranged on the lathe, a spindle driven by a servo motor to rotate is arranged in the spindle box, a positioning column abutting against a heat exchange gas connector backwards is arranged in the middle of the spindle in a front-back moving and sliding mode, and a fixing block is installed on the spindle. A sliding seat is arranged on the fixed block in a sliding fit mode in an up-down moving mode, a laterally-concave rotating frame is rotationally arranged in the middle of the sliding seat through a rotating shaft, and a movable clamping block and a fixed clamping block which are used for clamping a heat exchanger connector are arranged on the rotating frame. The device has the advantages that secondary displacement of the heat exchanger connector is automatically completed through the lifting piece, the heat exchanger connector is turned over after the rotating shaft is loosened, machining of the front face, the back face and double hole positions of the heat exchanger connector can be completed through one-time clamping, the automation degree is high, and efficiency is improved.

Description

Technical Field

[0001] This invention relates to the technical field of heat exchanger joints, and particularly to a turning device for automotive heat exchanger joints. Background Technology

[0002] Automotive heat exchangers are used to transfer heat in vehicle systems, enabling heat transfer between hot and cold fluids. Existing automotive heat exchanger connectors are made of aluminum alloy and consist of a central connecting section linking two cylinders. The process involves drilling and machining stepped holes in the center positions of the two cylinders on the front side of the connector. Then, on the back side, annular rings are machined into the holes on the two cylinders. Currently, the operator needs to clamp the heat exchanger connector in a lathe fixture, aligning the large hole of the connector with the spindle axis, drilling and machining the large hole on the front side, and then removing and clamping the heat exchanger connector. In another fixture, the small hole of the heat exchanger connector is aligned with the axis of the spindle. The small hole on the front is drilled and machined. Then, the heat exchanger connector is removed, flipped, and clamped in the first fixture so that the large hole of the heat exchanger connector is aligned with the axis of the spindle. The large hole on the back is machined. Then, the heat exchanger connector is removed and clamped in the second fixture so that the small hole of the heat exchanger connector is aligned with the axis of the spindle. The small hole on the back is machined. This process of clamping and changing fixtures multiple times is required to complete the process, which is cumbersome and inefficient. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a turning device for automotive heat exchanger joints, which automatically completes the secondary displacement of the heat exchanger joints through the lifting component, flips the heat exchanger joints after the shaft is released, and completes the processing of the front and back sides and double holes of the heat exchanger joints in one clamping, with a high degree of automation and improved efficiency.

[0004] During processing, the workpiece can be pre-assembled, and the workpiece on the positioning plate can be automatically released and clamped. After the workpiece on the rack assembly is tilted and moved to the positioning plate, the rack assembly is released, thus improving efficiency.

[0005] This invention provides a turning device for an automotive heat exchanger connector, including a lathe 1, a spindle box 2 on the lathe 1, a spindle driven by a servo motor inside the spindle box 2, a positioning post 3 for the rear heat exchanger connector sliding back and forth in the middle of the spindle, a fixing block 4 mounted on the spindle, a slide block 5 sliding up and down on the fixing block 5, a side-concave rotating frame 6 rotatably mounted in the middle of the slide block 5 via a rotating shaft, a movable clamping block 7 and a fixed clamping block 9 for clamping the heat exchanger connector on the rotating frame 6, and a lifting component 11 driven by a servo electric cylinder 10 on the spindle box 2. Block 4, the slide 5 is provided with a shifting component 12, the lifting component 11, the slide 5 is provided with a flipping mechanism connected to the rotating shaft and used to flip the rotating frame 6 half a turn, the flipping mechanism includes a driving component 13 and a locking component 14 for locking the rotating shaft, the lifting component 11 can drive the shifting component 12 to release the slide 5, the slide 5 is lowered to the bottom under the action of gravity and then locked by the shifting component 12, the lifting component 5 can drive the locking component 14 to release the rotating shaft, the lifting component 5 then drives the rotating frame 6 and its components to rotate half a turn through the driving component 13.

[0006] Furthermore, limiting blocks for limiting the slide block 5 are installed on both the upper and lower sides of the fixing block 4, and a guide rail is provided on the fixing block 4 to allow the slide block 5 to slide.

[0007] Furthermore, the lifting component 11 is composed of an upper connecting plate 11.1 connected to a lower vertical block 11.2. Inclined blocks 11.3 are symmetrically arranged on the left and right sides of the connecting plate 11.1. A telescopic groove is provided at the front end of the vertical block 11.2. A push part 11.4 is provided at the front end of the right inclined block 11.3.

[0008] Furthermore, the shifting component 12 includes two circular holes 12.1 formed at the bottom of the slide block 5 and distributed vertically. A first sliding groove is formed in the fixing block 4. A locking member 12.2 for inserting into the circular holes 12.1 is elastically slidably mounted in the first sliding groove. A stud 12.3 that cooperates with the inclined block 11.3 is horizontally screwed onto the locking member 12.2. A guide groove 12.5 is formed on the side wall of the fixing block 4 to allow the stud 12.3 to slide back and forth and to communicate with the first sliding groove.

[0009] Furthermore, the distance between the two circular holes 12.1 is consistent with the distance between the axes of the two holes of the heat exchanger connector.

[0010] Furthermore, the locking component 12.2 is composed of a first locking pin 12.2.1 on the upper side and a first guide rod 12.2.2 on the lower side. A side block 12.2.3 is provided on the first locking pin 12.2.1. A guide block 12.4 is fixed at the bottom of the first sliding groove to accommodate the sliding of the first guide rod 12.2.2. A first elastic element is provided on the first guide rod 12.2.2 to connect the first locking pin 12.2.1 and the guide block 12.4.

[0011] Furthermore, the drive assembly 13 includes a second gear 13.5 keyed to the rotating shaft, a pawl 13.3 and a first gear 13.4 meshing with the second gear 13.4 are rotatably disposed on the slide 5, a torsion spring is connected between the pawl 13.3 and the slide 5, a ratchet 13.2 coaxially connected to the first gear 13.4 and engaging with the pawl 13.3, and a lever 13.1 for unidirectionally rotating the ratchet 13.2 is elastically and telescopically disposed in the telescopic groove.

[0012] Furthermore, the locking assembly 14 includes a locking disc 14.1 keyed to the rotating shaft. The upper and lower sides of the outer wall of the locking disc 14.1 are symmetrically provided with locking grooves. The side wall of the slide block 5 is longitudinally provided with a second sliding groove. A second locking pin 14.2 that fits into the locking groove and can be pushed open by the push part 11.4 is slidably mounted on the second sliding groove. A second guide rod 14.3 that slides on the slide block 5 is longitudinally provided on the second locking pin 14.2. A second elastic member connecting the second sliding groove and the second locking pin 14.2 is sleeved on the second guide rod 14.3.

[0013] Furthermore, the cross-sections of the lock groove and the second lock pin 14.2 are both composed of squares connected to semicircles, and the edges of the lock groove are rounded.

[0014] Furthermore, the rotating frame 6 is equipped with a movable clamping block 7 that moves up and down, and the bottom of the rotating frame 6 is screwed with a locking bolt 8 that abuts against the movable clamping block 7.

[0015] The advantages of this invention are as follows: The secondary relocation of the heat exchanger joint is automatically completed by the lifting component; after the rotating shaft is released, the heat exchanger joint flips over; the processing of the front and back sides and double holes of the heat exchanger joint can be completed in a single clamping operation, resulting in a high degree of automation and improved efficiency; the slide slides down under gravity and is stopped by a limiting block; the connecting plate is connected to the end of the piston rod of the servo electric cylinder; the lever is elastically and telescopically set in the telescopic groove; the inclined block is used to drive the stud of the shifting component to move backward with the locking component; the locking component disengages from the round hole to release the slide. The pusher is used to push open the second locking pin of the locking assembly to release the rotating shaft; the lifting member descends, and the inclined surface of the inclined block drives the stud to move backward along the guide groove to the bottom. The stud moves backward with the locking member, and the locking member disengages from the lower circular hole. The slide descends to the bottom under the action of gravity, and the locking member pops out under the action of elasticity and inserts into another circular hole to lock the slide; the locking member locks one circular hole to lock the other circular hole, the heat exchanger joint descends to the bottom, and one hole position of the heat exchanger joint is aligned with the axis of the main shaft, then the other hole position is aligned with the axis of the main shaft; the first A locking pin is used to pop out and insert into a round hole, and a stud is screwed to a side block. The lifting component lowers with a lever through a telescopic groove. The lever contacts a ratchet and rotates the ratchet by a certain angle. The ratchet rotates the first gear by a certain angle. The first gear drives the second gear to rotate half a turn. The second gear drives the rotating frame and its components to rotate half a turn through a rotating shaft, thus completing the flip. Then the lifting component rises and resets. After the lever contacts the ratchet, it retracts into the telescopic groove. The ratchet remains stationary under the action of the pawl, thus achieving unidirectional rotation. The pusher pushes the second locking pin down. The second locking pin disengages from the locking groove of the locking disc to release the locking disc and rotating shaft. After the drive assembly drives the rotating frame and its components to rotate half a turn, the lifting component rises and resets. The pusher rises accordingly. The second locking pin rises and resets under the action of the second elastic element. The second locking pin fits snugly into the locking groove of the locking disc, thus locking the locking disc and rotating shaft. The cross-sections of the locking groove and the second locking pin are both composed of squares connected to semicircles. The above configuration can stably lock the locking groove, and the rounded corners can guide the entry of the second locking pin. Attached Figure Description

[0016] Figure 1 This is a perspective view of the present invention; Figure 2 This is a partial structural schematic diagram of the present invention; Figure 3 This is a partial front view of the present invention; Figure 4 This is a partial right view of the present invention; Figure 5 This is a partial top view of the present invention; Figure 6 for Figure 5 AA section view; Figure 7 This is a partial structural diagram of the clamping heat exchanger joint of the present invention; Figure 8This is a partial right view of the present invention when the right-side inclined block drives the stud to move backward to the bottom and the slide block descends to the bottom. Figure 9 This is a partial right view of the present invention when the pusher pushes open the second locking pin to release the rotating shaft; Figure 10 This is a partial right view of the present invention when the pusher pushes open the second locking pin and the rotating shaft and rotating frame rotate half a turn. Figure 11 This is a partial front view of the invention when the left-side inclined block drives the stud to move backward to the bottom and the slide block descends to the bottom. Figure 12 for Figure 2 Enlarged view of part B; Figure 13 for Figure 7 Enlarged view of part C; Figure 14 This is a schematic diagram of the lifting component and the toggle block of the present invention; Figure 15 This is a schematic diagram of the structure of the locking component and stud of the present invention. Detailed Implementation

[0017] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0018] See Figures 1 to 15This invention provides a turning device for an automotive heat exchanger connector, comprising a lathe 1, a spindle box 2 on the lathe 1, a spindle driven by a servo motor inside the spindle box 2, a positioning post 3 for the rear heat exchanger connector sliding back and forth in the middle of the spindle (previously a chuck, now replaced by a positioning post), which can move back and forth under the pull of a rotary cylinder on the rear side of the spindle box (the above is prior art), a fixing block 4 mounted on the spindle, a slide block 5 sliding up and down on the fixing block 5, and limiting blocks for limiting the slide block 5 mounted on both the upper and lower sides of the fixing block 4, and a guide rail for sliding the slide block 5 on the fixing block 4. The slide block slides down under gravity and is stopped by the limiting blocks. A countersunk hole can be made in the limiting block, and a buffer spring is set at the countersunk hole to buffer the slide block. After the slide block descends to the bottom, the buffer spring can retract into the countersunk hole. A side-concave rotating frame 6 is rotatably mounted on a rotating shaft. The rotating frame 6 is equipped with a movable clamping block 7 and a fixed clamping block 9 for clamping the heat exchanger joint. The axis of the rotating shaft is located at the midpoint between the front and back sides of the heat exchanger joint. A lifting component 11 driven by a servo electric cylinder 10 is mounted on the main shaft box 2. A shifting component 12 is mounted on the fixed block 4 and the slide 5. A flipping mechanism connected to the rotating shaft is mounted on the lifting component 11 and the slide 5 for flipping the rotating frame 6 half a turn. The flipping mechanism includes a drive component 13 and a locking component 14 for locking the rotating shaft. The lifting component 11 can drive the shifting component 12 to release the slide 5. The slide 5 descends to the bottom under the action of gravity and is locked by the shifting component 12. The lifting component 5 can drive the locking component 14 to release the rotating shaft. The lifting component 5 then drives the rotating frame 6 and its components to rotate half a turn through the drive component 13.The operator places the heat exchanger connector into the movable clamp, the fixed clamp, and then against the positioning post. The movable clamp is then operated to clamp the heat exchanger connector. The spindle axis is aligned with the axis of the large hole on the heat exchanger connector. The lathe drills the large hole on the front of the heat exchanger connector and machines a stepped hole. The spindle then stops, with the fixed block and slide vertically on the right side. The servo cylinder drives the lifting mechanism to descend, which in turn drives the shifting assembly to release the slide. The slide descends to the bottom under gravity and is locked by the shifting assembly. The spindle axis is then aligned with the axis of the small hole on the heat exchanger connector. The lathe drills the small hole on the front of the heat exchanger connector and machines a stepped hole. The spindle then stops, with the fixed block and slide vertically on the right side. The servo cylinder drives the lifting mechanism to descend, which first releases the locking assembly to loosen the shaft. The lifting mechanism then drives the rotating frame through the drive assembly. The spindle and its components rotate half a circle (the positioning pin moves back and forth during rotation, and moves forward to reset after rotation). The heat exchanger joint changes sideways, and the axis of the spindle aligns with the large hole on the reverse side of the heat exchanger joint. The lathe performs machining around the large hole on the reverse side of the heat exchanger joint. Then, the spindle stops, and the fixed block and slide are vertical on the left side. The lifting component drives the shifting assembly to release the slide. The slide descends to the bottom under gravity and is locked by the shifting assembly. The axis of the spindle aligns with the small hole on the reverse side of the heat exchanger joint. The lathe performs machining around the small hole on the reverse side of the heat exchanger joint. Then, the spindle stops, and the fixed block and slide are vertical on the right side. The operator releases the rotating shaft with the locking assembly and rotates the rotating frame and its components half a circle (the positioning pin moves back and forth during rotation, and moves forward to reset after rotation). The locking assembly automatically locks the rotating shaft. Then, the movable clamping block is operated to remove the machined heat exchanger joint.

[0019] The axis of the rotating shaft is located in the middle of the two hole axes of the heat exchanger joint. The axis of one hole of the heat exchanger joint coincides with the axis of the main shaft. After the rotating shaft rotates half a turn with the rotating frame and its upper components, the axis of the other hole of the heat exchanger joint coincides with the axis of the main shaft.

[0020] See Figure 2 , Figure 14 The lifting component 11 consists of an upper connecting plate 11.1 connected to a lower vertical block 11.2. Sloping blocks 11.3 are symmetrically arranged on the left and right sides of the connecting plate 11.1. A telescopic groove is provided at the front end of the vertical block 11.2, and a pusher 11.4 is provided at the front end of the right-side sloping block 11.3. The connecting plate is connected to the end of the piston rod of the servo cylinder. A lever is elastically telescopically positioned in the telescopic groove. The sloping blocks drive the stud of the shifting assembly to move backward with the locking element, disengaging the locking element from the round hole to release the slide. The pusher pushes open the second locking pin of the locking assembly to release the rotating shaft.

[0021] The shifting assembly 12 includes two circular holes 12.1 located vertically at the bottom of the slide block 5. A first sliding groove is formed within the fixing block 4, within which a locking member 12.2 is slidably fitted for insertion into the circular holes 12.1. A stud 12.3, which mates with the inclined block 11.3, is horizontally screwed onto the locking member 12.2. A guide groove 12.5, which accommodates the stud 12.3 sliding back and forth and communicates with the first sliding groove, is formed on the side wall of the fixing block 4. When the fixing block and slide block are vertically positioned on the left or right (with the slide block at a higher position), the lifting component descends. The inclined surface of the inclined block drives the stud to move backward along the guide groove to the bottom. The stud, along with the locking member, moves backward, disengaging from the lower circular hole. The slide block descends to the bottom under gravity, and the locking member, under elastic force, pops out and inserts into the other circular hole to lock the slide block.

[0022] The distance between the two circular holes 12.1 is consistent with the distance between the axes of the two holes of the heat exchanger joint. The locking device locks one of the circular holes to lock the other circular hole, and the heat exchanger joint descends to the bottom. One hole of the heat exchanger joint is aligned with the axis of the main shaft, and then the other hole is aligned with the axis of the main shaft.

[0023] See Figure 6 , Figure 15 The locking component 12.2 consists of a first locking pin 12.2.1 on the upper side and a first guide rod 12.2.2 on the lower side. A side block 12.2.3 is provided on the first locking pin 12.2.1. A guide block 12.4 is fixed at the bottom of the first sliding groove to accommodate the sliding of the first guide rod 12.2.2. A first elastic element is provided on the outer sleeve of the first guide rod 12.2.2 to connect the first locking pin 12.2.1 and the guide block 12.4. The first elastic element is a compression spring. The first locking pin is used to pop out and insert into the round hole, and the stud is screwed to the side block.

[0024] The drive assembly 13 includes a second gear 13.5 keyed to a rotating shaft, a pawl 13.3 rotatably mounted on a slide 5, a first gear 13.4 meshing with the second gear 13.4, a torsion spring connecting the pawl 13.3 and the slide 5, a ratchet 13.2 coaxially connected to the first gear 13.4 and engaging with the pawl 13.3, and a lever 13.1 elastically telescopically mounted in a telescopic groove for unidirectionally rotating the ratchet 13.2. As the lifting component descends, the locking assembly releases the pivot, and the pawl, under the action of the torsion spring, presses against the ratchet (keeping it stationary to prevent deflection). The lifting component descends with the lever through the telescopic groove. The lever contacts the ratchet and rotates it by a certain angle (during the rotation, the lever adapts to extending and retracting within the telescopic groove). The ratchet rotates the first gear by a certain angle, which in turn drives the second gear to rotate half a turn. The second gear, through the pivot, drives the rotating frame and its components to rotate half a turn, thus completing the flip. Then, the lifting component rises and resets. After the lever contacts the ratchet, it retracts into the telescopic groove, and the ratchet remains stationary under the action of the pawl, thus achieving unidirectional rotation.

[0025] The locking assembly 14 includes a locking disc 14.1 keyed to the rotating shaft. The upper and lower sides of the outer wall of the locking disc 14.1 are symmetrically provided with locking grooves. A second sliding groove is longitudinally provided on the side wall of the slide block 5. A second locking pin 14.2, which fits snugly into the locking groove and can be pushed open by the pusher 11.4, is slidably mounted on the second sliding pin 14.2. A second guide rod 14.3, which fits longitudinally onto the slide block 5, is sleeved on the second guide rod 14.3. A second elastic element, connecting the second sliding groove and the second locking pin 14.2, is provided on the outer sleeve of the second guide rod 14.3. The second elastic element is a compression spring. When the lifting member descends, the pusher pushes the second locking pin down, causing the second locking pin to disengage from the locking groove of the locking disc, thus releasing the locking disc and the rotating shaft. After the drive assembly drives the rotating frame and its components to rotate half a turn, the lifting member rises and resets, and the pusher rises accordingly. Under the action of the second elastic element, the second locking pin rises and resets, fitting snugly into the locking groove of the locking disc, thereby locking the locking disc and the rotating shaft.

[0026] The cross-sections of both the locking groove and the second locking pin 14.2 are composed of squares connected to semicircles, and the edges of the locking groove are rounded. This design allows the locking groove to be stably locked, and the rounded edges guide the entry of the second locking pin.

[0027] The rotating frame 6 is equipped with a movable clamping block 7 that moves up and down. A locking bolt 8 is screwed to the bottom of the rotating frame 6, which abuts against the movable clamping block 7. When the locking bolt is screwed in, it pushes the movable clamping block towards the fixed clamping block, thereby clamping the heat exchanger joint. When the locking bolt is unscrewed, the movable clamping block descends under the action of gravity to loosen the heat exchanger joint.

[0028] The specific workflow of this invention is as follows: The operator places the heat exchanger connector into the movable clamping block and the fixed clamping block, which then abuts against the positioning post. Next, the locking bolt is screwed in, causing the movable clamping block to clamp the heat exchanger connector. The axis of the main shaft is aligned with the axis of the large hole of the heat exchanger connector. Figure 7 As shown, the lathe drills a large hole on the front of the heat exchanger connector and machines a stepped hole in the large hole. Then, the spindle stops, and the fixed block and slide are vertical on the right side. The servo cylinder drives the lifting component to descend. The inclined surface of the right-side inclined block drives the stud to move backward along the guide groove to the bottom. The stud moves backward with the locking component. The first locking pin of the locking component disengages from the lower round hole. The slide descends to the bottom under the action of gravity. The locking component pops out under the action of elasticity and inserts into another round hole to lock the slide. Figure 8 As shown, the axis of the main spindle is aligned with the axis of the small hole in the heat exchanger connector. The lifting component rises and resets. The lathe drills the small hole on the front of the heat exchanger connector and machines a stepped hole in the small hole. Then, the main spindle stops, and the fixing block and slide are vertical on the right side. The lifting component descends, and the pusher pushes the second locking pin down. The second locking pin disengages from the locking groove of the locking plate to release the locking plate and the rotating shaft. Figure 9As shown, the pawl, under the action of the torsion spring, can press down on the ratchet (keeping it stationary to prevent deflection). The lifting component lowers the lever along the telescopic groove. The lever contacts the ratchet and rotates the ratchet by a certain angle (during the rotation, the lever adapts to extending and retracting within the telescopic groove). The ratchet rotates the first gear by a certain angle, the first gear drives the second gear to rotate half a turn, and the second gear, through the rotating shaft, drives the rotating frame and its components to rotate half a turn, thus completing the flipping process. Figure 10 As shown, the lifting component then rises and resets. After the lever contacts the ratchet, it retracts into the telescopic groove. The ratchet remains stationary under the action of the pawl, thus achieving unidirectional rotation. The pusher rises accordingly, and the second locking pin rises and resets under the action of the second elastic element. The second locking pin fits snugly into the locking groove of the locking disc, thereby locking the locking disc and the rotating shaft. The positioning pin moves back and forth during rotation and moves forward to reset after rotation. The heat exchanger joint changes side, and the axis of the spindle aligns with the large hole on the reverse side of the heat exchanger joint. The lathe moves around the large hole on the reverse side of the heat exchanger joint. The lathe begins turning, then the spindle stops and the fixed block and slide are vertical on the left. The lifting mechanism descends, and the inclined surface of the left-side block drives the stud to move backward along the guide groove to the bottom. The stud, along with the locking mechanism, moves backward, and the first locking pin of the locking mechanism disengages from the lower circular hole. The slide descends to the bottom under gravity, and the first locking pin of the locking mechanism springs out under elastic force and inserts into another circular hole to lock the slide. The axis of the spindle aligns with the small hole on the opposite side of the heat exchanger connector. The lifting mechanism rises and resets, and the lathe performs turning around the small hole on the opposite side of the heat exchanger connector. Figure 11 As shown, the main shaft then stops and the fixed block and slide are vertical on the right side. The operator pushes open the second locking pin to release the rotating shaft and rotates the rotating frame and its components half a turn (the positioning pin moves forward and backward during rotation and moves forward to reset after rotation). After releasing the second locking pin, it elastically resets to lock the rotating shaft. Then, the locking bolt is unscrewed to remove the processed heat exchanger joint.

[0029] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A turning device for an automotive heat exchanger connector, comprising a lathe, wherein a spindle headstock is provided on the lathe, and a spindle driven by a servo motor is provided inside the spindle headstock, characterized in that: The main shaft is equipped with a positioning post for the rear heat exchanger connector, which moves back and forth in the middle. A fixed block is mounted on the main shaft, and a slide block is mounted on the fixed block, which moves up and down. A side-concave rotating frame is rotatably arranged in the middle of the slide block via a rotating shaft. The rotating frame is equipped with a movable clamping block and a fixed clamping block for clamping the heat exchanger connector. A lifting component driven by a servo electric cylinder is provided on the main shaft box. A shifting component is provided on the fixed block and the slide block. A flipping mechanism connected to the rotating shaft and used to flip the rotating frame half a turn is provided on the lifting component and the slide block. The flipping mechanism includes a drive component and a locking component for locking the rotating shaft. The lifting component can drive the shifting component to release the slide block. The slide block descends to the bottom under the action of gravity and is locked by the shifting component. The lifting component can drive the locking component to release the rotating shaft. The lifting component then drives the rotating frame and its components to rotate half a turn through the drive component.

2. The turning device for an automotive heat exchanger joint as described in claim 1, characterized in that: Limiting blocks for limiting the slide are installed on both the upper and lower sides of the fixed block, and a guide rail for allowing the slide to slide is provided on the fixed block.

3. The turning device for an automotive heat exchanger joint as described in claim 1, characterized in that: The lifting component consists of an upper connecting plate connected to a lower vertical block. Inclined blocks are symmetrically arranged on the left and right sides of the connecting plate. A telescopic groove is provided at the front end of the vertical block, and a pusher is provided at the front end of the right-side inclined block.

4. The turning device for an automotive heat exchanger joint as described in claim 3, characterized in that: The displacement assembly includes two circular holes located at the bottom of the slide block and distributed vertically. A first sliding groove is provided in the fixing block. A locking member for inserting into the circular hole is slidably mounted in the first sliding groove, moving back and forth. A stud that cooperates with the inclined block is horizontally screwed onto the locking member. A guide groove is provided on the side wall of the fixing block to allow the stud to slide back and forth and to communicate with the first sliding groove.

5. The turning device for an automotive heat exchanger joint as described in claim 4, characterized in that: The distance between the two circular holes is consistent with the distance between the axes of the two holes of the heat exchanger connector.

6. The turning device for an automotive heat exchanger joint as described in claim 4, characterized in that: The locking component consists of a first locking pin on the upper side and a first guide rod on the lower side. A side block is provided on the first locking pin. A guide block is fixed at the bottom of the first sliding groove to accommodate the sliding of the first guide rod. A first elastic element is provided on the outer sleeve of the first guide rod to connect the first locking pin and the guide block.

7. The turning device for an automotive heat exchanger joint as described in claim 3, characterized in that: The drive assembly includes a second gear keyed to the rotating shaft, a pawl rotatably mounted on the slide, a first gear meshing with the second gear, a torsion spring connecting the pawl and the slide, a ratchet coaxially connected to the first gear and engaging with the pawl, and a lever for unidirectionally rotating the ratchet is elastically and telescopically mounted in the telescopic groove.

8. The turning device for an automotive heat exchanger joint as described in claim 3, characterized in that: The locking assembly includes a locking disc keyed to the rotating shaft. The upper and lower sides of the outer wall of the locking disc are symmetrically provided with locking grooves. The side wall of the slide block is longitudinally provided with a second sliding groove. A second locking pin is slidably fitted into the locking groove and can be pushed open by the push part on the second sliding groove. A second guide rod is longitudinally provided on the second locking pin and slidably fitted to the slide block. A second elastic member connecting the second sliding groove and the second locking pin is sleeved on the second guide rod.

9. The turning device for an automotive heat exchanger joint as described in claim 8, characterized in that: The cross-sections of the lock groove and the second lock pin are both composed of squares connected to semicircles, and the edges of the lock groove are rounded.

10. The turning device for an automotive heat exchanger joint as described in claim 1, characterized in that: The rotating frame is equipped with a movable clamping block that moves up and down, and a locking bolt that abuts against the movable clamping block is screwed to the bottom of the rotating frame.

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