An automatic assembling machine for a fan volute

Abstract

A fan volute automatic assembly machine includes a side plate locking component and a main shaft drive component for locking two side plates and driving the side plates to rotate, a volute plate support component for supporting and pressing the volute plate, a lower roller component and an upper pressing wheel component, and a riveting pliers component for pre-riveting and flattening the heads of the two side plates and the volute plate; the fan volute automatic assembly machine involved is used to quickly connect the side plates and the volute plate that make up the fan volute by means of biting. Compared with the traditional connection methods of local spot welding or screwing, the assembly and forming efficiency of the fan volute is greatly improved, the product quality is more guaranteed, and the fan volute automatic assembly machine has a compact structure, ingenious design, fast and accurate power transmission, and high automation degree.

Description

Technical Field

[0001] The present invention relates to an automatic assembly machine for a fan volute. Background Art

[0002] The fan volute is obtained by fixedly connecting two side plates and a volute plate. In traditional fan volutes, the side plates and the volute plate are fixedly connected by screwing or local spot welding. When using the local spot welding method, the fixation of the relative positions of the side plates and the volute plate needs to be completed manually, and the assembly of a single fan volute requires the participation of multiple operators, resulting in high labor costs and low assembly efficiency. Moreover, the formed fan volute has local deformation due to internal stress, and it is difficult to ensure the homogeneity of the products. When using the screwing method, there is already equipment in the production workshop for accurately positioning the relative positions of the side plates and the volute plate, such as the metal coil fan assembly machine disclosed in the publication number CN101672301B. Compared with the local spot welding method, the products obtained by using the screwing method have better quality, but due to the cumbersome operation process of the equipment, the overall assembly efficiency still needs to be further improved.

[0003] Regarding the traditional connection methods between the side plates and the volute plate of the fan volute, the related technologies have reached a bottleneck. To further improve the assembly efficiency of the fan volute, researchers need to explore new connection methods, develop new fan volute structures and corresponding new automatic assembly machines. Summary of the Invention

[0004] In view of the deficiencies in the above problems, the present invention provides an automatic assembly machine for a fan volute.

[0005] To achieve the above object, the present invention provides an automatic assembly machine for a fan volute, comprising:

[0006] A workbench and a frame, the workbench is fixedly connected to the frame;

[0007] Two first slides and an X-axis servo motor. There are two first slides, and the two first slides are arranged left and right on the tabletop of the workbench. The two first slides and the workbench form a relative sliding structure through a guide rail and slider method. The X-axis servo motor is fixed on the tabletop of the workbench and drives the two first slides to approach or move away from each other along the X-axis direction through a double-headed lead screw at the shaft end;

[0008] A second slide and a vertical plate. The second slide is slidably arranged above the first slide through a guide rail and slider method. A Y-axis lead screw is further arranged on the first slide to drive the second slide to slide along the Y-axis direction. The vertical plate is vertically fixedly connected to the second slide;

[0009] A synchronous drive mechanism, which is used to drive the two Y-axis lead screws to rotate synchronously to ensure that the two second slides slide synchronously along the Y-axis direction;

[0010] A third slide plate and a first cylinder, wherein the third slide plate is arranged on the side of the vertical plate in a guide rail slider manner, and the first cylinder is fixed on the vertical plate for driving the third slide plate to slide along the Z-axis direction;

[0011] A side plate locking assembly, which is arranged on the third slide plate for locking the side plate. The side plate locking assembly includes a main bearing seat fixed on the third slide plate and a main shaft rotatably arranged in the main bearing seat;

[0012] A main shaft driving assembly, which is arranged on the third slide plate for driving the main shaft to rotate;

[0013] A spiral plate support assembly, which is used for supporting the spiral plate;

[0014] A lower roller assembly, which is used for forming a support at the edge of the lower part of the spiral plate during assembly. The lower roller assembly includes a lower roller bearing seat, a lower roller shaft arranged in the lower roller bearing seat, and a lower roller arranged at the inner end of the lower roller shaft;

[0015] An upper pressing wheel assembly, which is used for pressing on the edge of the upper part of the spiral plate during assembly. The upper pressing wheel assembly includes a fixing pin, a pressing arm, a third cylinder, and a first oil cylinder. The fixing pin is connected to the first slide plate through a bracket. The middle part of the pressing arm is arranged on the fixing pin. One end of the pressing arm is provided with an upper pressing wheel so as to form an extrusion effect with the lower roller. The first oil cylinder is connected to the first slide plate through a bracket for driving the pressing arm to rotate around the fixing pin as the central axis. The third cylinder is connected to the first slide plate through a bracket for driving the pressing arm to move along the axial direction of the fixing pin;

[0016] A riveting pliers assembly, which is used for pre-riveting and flattening the side plate and the head of the spiral plate during assembly.

[0017] As a further improvement of the present invention, the synchronous driving mechanism includes a synchronous shaft and a sliding gear set. The synchronous shaft is in transmission connection with a Y-axis servo motor fixed on the frame through a synchronous belt, and the synchronous shaft is in transmission connection with the Y-axis lead screw through the sliding gear set.

[0018] As a further improvement of the present invention, the sliding gear set includes an X-axis bevel gear, a Y-axis bevel gear, a gear sliding sleeve, and a thrust ball bearing baffle. The synchronous shaft drives the X-axis bevel gear and the gear sliding sleeve to rotate through a key, and the Y-axis bevel gear is fixed on the Y-axis lead screw and meshes with the X-axis bevel gear.

[0019] As a further improvement of the present invention, the side plate locking assembly further includes a second cylinder fixed on the third slide plate, a tooling plate and a positioning ring fixedly connected to the inner end of the main shaft, and a pull rod inserted into the main shaft. The second cylinder is connected to the pull rod through a rotary joint. A hinge support is fixedly connected to the inner end of the pull rod, and the hinge support is connected to the telescopic strip through a connecting rod. When the pull rod is tightened by the second cylinder, the telescopic strip can be driven to extend out of the end face of the positioning ring to lock the side plate.

[0020] As a further improvement of the present invention, the main shaft drive assembly includes a main shaft servo motor, a gear provided at the output end of the main shaft servo motor, and a gear ring concentrically fixed to the main shaft. The gear meshes with the gear ring to achieve power transmission.

[0021] As a further improvement of the present invention, the volute plate support assembly includes a flow strip and a plurality of guide wheels. The flow strip is erected in the middle of the workbench, and a plurality of flow rollers are provided on the flow strip. The plurality of guide wheels are connected to the inner edge of the first slide plate through brackets.

[0022] As a further improvement of the present invention, a limit slider and a fourth cylinder for driving the limit slider to slide are provided on the upper surface of the lower roller bearing seat. The limit slider is movable to limit the downward position of the tooling plate.

[0023] As a further improvement of the present invention, the riveting pliers assembly includes a riveting pliers seat, a second oil cylinder and a fifth cylinder connected below the riveting pliers seat. A lower riveting block is provided at the shaft end of the second oil cylinder. The lower riveting block is pressed against the riveting pliers seat to pre-rivet and flatten the side plate and the head of the volute plate. The fifth cylinder is fixedly connected to the end of the first slide plate, and the fifth cylinder drives the riveting pliers seat to move along the X-axis direction through a guide rail slider.

[0024] The beneficial effects of the present invention compared with the prior art are as follows: The automatic fan volute assembling machine involved is used to quickly connect the side plate and the volute plate that make up the fan volute by means of biting. Compared with the traditional connection methods such as local spot welding or screwing, the assembly efficiency of the fan volute is greatly improved, and the product quality is more guaranteed; and the automatic fan volute assembling machine has a compact structure, ingenious design, fast and accurate power transmission, and high automation degree. Description of the Drawings

[0025] Figure 1 It is a three-dimensional view of an automatic fan volute assembling machine of the present invention;

[0026] Figure 2 It is a left view of an automatic fan volute assembling machine of the present invention;

[0027] Figure 3 It is a schematic diagram of a sliding gear set;

[0028] Figure 4 This is a schematic diagram of the left part of the workbench;

[0029] Figure 5 for Figure 4 Schematic diagram of the other direction;

[0030] Figure 6 It is a structural cross-sectional view of the side panel locking assembly;

[0031] Figure 7 is a three-dimensional diagram of a side panel locking assembly;

[0032] Figure 8 A three-dimensional diagram of an automatic assembly machine for a fan volute of the present invention (with the volute plate hidden);

[0033] Figure 9 is a schematic diagram of a lower roller assembly;

[0034] Figure 10 is a schematic diagram of a riveting clamp assembly;

[0035] Figure 11 is a schematic diagram of a fan volute involved;

[0036] Figure 12 is a schematic diagram of the side panels involved (the left side panel and the right side panel are symmetrical in the figure);

[0037] Figure 13 Schematic diagram of the involved snail plates.

[0038] In the figure: 1, frame; 2, workbench; 3, first slide; 4, X-axis servo motor; 5, double-headed screw; 6, second slide; 7, vertical plate; 8, Y-axis screw; 9, sliding gear set; 91, X-axis bevel gear; 92, Y-axis bevel gear; 93, gear sleeve; 94, thrust ball bearing baffle; 10, synchronous shaft; 11, synchronous belt; 12, Y-axis servo motor; 13, third slide; 14, No. 1 cylinder; 15, spindle servo motor; 16, gear; 17, gear ring; 18, No. 2 cylinder; 19, rotary joint; 20, pull rod; 21, spindle; 22, main bearing seat; 23, Tooling plate; 24, positioning ring; 25, telescopic strip; 26, connecting rod; 27, hinge support; 28, smooth strip; 29, guide wheel; 30, lower roller assembly; 301, lower roller bearing seat; 302, lower roller; 303, No. 4 cylinder; 304, limit slider; 305, lower roller; 31, upper pressure wheel assembly; 311, fixing pin; 312, pressure arm; 313, No. 3 cylinder; 314, No. 1 oil cylinder; 315, upper pressure wheel; 32, rivet clamp assembly; 321, rivet clamp seat; 322, lower riveting block; 323, No. 2 oil cylinder; 324, No. 5 cylinder; 33, side plate; 34, snail plate. DETAILED DESCRIPTION

[0039] An automatic assembling machine for a fan volute according to an embodiment of the present invention is dedicated to the bite forming of a side plate 33 and a volute plate 34 connected in a bite manner, and the structure of the obtained fan volute is as shown in Figure 11 shown. The structures of the side plate 33 and the volute plate 34 before biting are as shown in Figure 12 and 13 shown. Figures 11 - 13 Only one biting structure is shown. For other different forms of biting methods, the shapes of the lower roller 305 and the upper pressing wheel 315 involved in the automatic assembling machine for the fan volute are also different.

[0040] As shown in Figure 1 and Figure 2 shown, an automatic assembling machine for a fan volute according to an embodiment of the present invention includes a workbench 2 and a frame 1, and the workbench 2 is fixedly connected to the frame 1; there are two first sliding plates 3, and the two first sliding plates 3 are arranged one on the left and one on the right on the tabletop of the workbench 2. The two first sliding plates 3 and the workbench 2 form a relative sliding structure through a guide rail slider method. The X-axis servo motor 4 is fixed on the tabletop of the workbench 2 and drives the two first sliding plates 3 to approach or move away from each other along the X-axis direction through a double-headed lead screw 5 at the shaft end; the second sliding plate 6 is slidably arranged above the first sliding plate 3 through a guide rail slider method. A Y-axis lead screw 8 is also arranged on the first sliding plate 3 to drive the second sliding plate 6 to slide along the Y-axis direction, and a vertical plate 7 is vertically fixedly connected to the second sliding plate 6.

[0041] As shown in Figures 1 - 3 shown, a synchronous driving mechanism is used to drive the two Y-axis lead screws 8 to rotate synchronously to ensure that the two second sliding plates 6 slide synchronously along the Y-axis direction. The synchronous driving mechanism includes a synchronous shaft 10 and a sliding gear set 9. The synchronous shaft 10 is in transmission connection with a Y-axis servo motor 12 fixed on the frame 1 through a synchronous belt 11, and the synchronous shaft 10 is in transmission connection with the Y-axis lead screw 8 through the sliding gear set 9; the sliding gear set 9 includes an X-axis bevel gear 91, a Y-axis bevel gear 92, a gear sliding sleeve 93, and a thrust ball bearing baffle 94. The synchronous shaft 10 drives the X-axis bevel gear 91 and the gear sliding sleeve 93 to rotate through a key, and the Y-axis bevel gear 92 is fixed on the Y-axis lead screw 8 and meshes with the X-axis bevel gear 91.

[0042] As shown in Figure 4 and Figure 5 shown, the third sliding plate 13 is arranged on the side of the vertical plate 7 through a guide rail slider method, and a first cylinder 14 is fixed on the vertical plate 7 to drive the third sliding plate 13 to slide along the Z-axis direction.

[0043] Combined with Figures 4 - 7, the side plate locking assembly is arranged on the third slide plate 13 for locking the side plate 33. The side plate locking assembly includes a main bearing seat 22 fixed on the third slide plate 13 and a second cylinder 18, a main shaft 21 rotatably arranged in the main bearing seat 22, a tooling plate 23 and a positioning ring 24 fixedly connected to the inner end of the main shaft 21, and a pull rod 20 arranged in the main shaft 21. The second cylinder 18 is connected to the pull rod 20 through a rotary joint 19. The inner end of the pull rod 20 is fixedly connected with a hinge support 27, and the hinge support 27 is connected to the telescopic strip 25 through a connecting rod 26. When the pull rod 20 is tightened by the second cylinder 18, it can drive the telescopic strip 25 to extend out of the end face of the positioning ring 24 to realize the locking of the side plate 33 (magnets and anti-rotation pins are arranged on the tooling plate 23. When the side plate 33 is positioned and installed on the tooling plate 23, the magnets and anti-rotation pins further ensure the accuracy of the position and avoid relative offset during the rotation process); the main shaft driving assembly is arranged on the third slide plate 13 for driving the main shaft 21 to rotate; the main shaft driving assembly includes a main shaft servo motor 15, a gear 16 arranged at the output end of the main shaft servo motor 15, and a gear ring 17 concentrically and fixedly connected to the main shaft 21. The gear 16 meshes with the gear ring 17 to realize power transmission.

[0044] As Figure 4 , Figure 8 shown, the spiral plate support assembly is used for supporting the spiral plate 34; the spiral plate support assembly includes a flow bar 28 and a plurality of guide wheels 29. The flow bar 28 is erected in the middle of the workbench 2, and a plurality of flow rollers are arranged on the flow bar 28. A plurality of guide wheels 29 are connected to the inner side edge of the first slide plate 3 through brackets.

[0045] As Figure 9 shown, the lower roller assembly 30 is used to form a support at the lower edge of the spiral plate 34 during assembly. The lower roller assembly 30 includes a lower roller bearing seat 301, a lower roller shaft 302 arranged in the lower roller bearing seat 301, and a lower roller 305 arranged at the inner end of the lower roller shaft 302; a limit slider 304 and a fourth cylinder 303 for driving the limit slider 304 to slide are arranged on the upper surface of the lower roller bearing seat 301. The limit slider 304 restricts the downward position of the tooling plate 23 through movement.

[0046] As Figure 4 , Figure 5As shown in the figure, the upper pressing wheel assembly 31 is used to press tightly on the upper edge of the volute plate 34 during assembly. The upper pressing wheel assembly 31 includes a fixing pin 311, a pressing arm 312, a third cylinder 313, and a first oil cylinder 314. The fixing pin 311 is connected to the first sliding plate 3 through a bracket. The middle part of the pressing arm 312 is sleeved on the fixing pin 311. One end of the pressing arm 312 is provided with an upper pressing wheel 315 to form an extrusion effect with the lower roller 305. The first oil cylinder 314 is connected to the first sliding plate 3 through a bracket and is used to drive the pressing arm 312 to rotate around the fixing pin 311 as the central axis. The third cylinder 313 is connected to the first sliding plate 3 through a bracket and is used to drive the pressing arm 312 to move along the axial direction of the fixing pin 311.

[0047] As Figure 4 、 Figure 10 shown in the figure, the riveting pliers assembly 32 is used for pre-riveting and flattening the side plate 33 and the head of the volute plate 34 during assembly. The riveting pliers assembly 32 includes a riveting pliers seat 321, a second oil cylinder 323 connected below the riveting pliers seat 321, and a fifth cylinder 324. The shaft end of the second oil cylinder 323 is provided with a lower riveting block 322. The lower riveting block 322 is pressed against the riveting pliers seat 321 to achieve pre-riveting and flattening of the side plate 33 and the head of the volute plate 34. The fifth cylinder 324 is fixedly connected to the end of the first sliding plate 3. The fifth cylinder 324 drives the riveting pliers seat 321 to move along the X-axis direction through a guide rail and slider mechanism.

[0048] The fan volute automatic assembly machine involved is used to quickly connect the side plate and the volute plate that make up the fan volute by means of biting. Compared with the traditional connection methods of local spot welding or screwing, the assembly efficiency of the fan volute is greatly improved, and the product quality is more guaranteed. Moreover, the fan volute automatic assembly machine has a compact structure, ingenious design, fast and accurate power transmission, and high automation degree.

[0049] During specific use, for the convenience of understanding the present invention, it is described in conjunction with the accompanying drawings;

[0050] The automatic assembly machine assembles Figure 12 、 Figure 13 the side plate and the volute plate involved to form Figure 11 the fan volute shown in the figure. The specific process is as follows:

[0051] S1. First, install the left and right side plates 33 on the left and right tooling plates 23 respectively, fix the positions, and pull the pull rod 20 through the second cylinder 18 to lock the side plates 33.

[0052] S2. The fourth cylinder 303 on the lower roller assembly 30 pushes the limit slider 304 into place to limit the downward position of the left and right tooling plates 23.

[0053] S3. The fifth cylinder 324 on the riveting pliers assembly 32 pushes the riveting pliers seat 321 into place.

[0054] S4. The tooling plates 23 on the left and right sides slide under the push of the first cylinder 14 and stop moving when they contact the limit slider 304. Meanwhile, driven by the Y-axis lead screw 8, the side plates 33 move to the riveting pliers position.

[0055] S5. The spiral plate 34 is automatically fed by the roller feeder until the end face of the spiral plate 34 is flush with the end face of the side plate 33. Meanwhile, the fourth cylinder 303 resets, causing the limit slider 304 to retract.

[0056] S6. The riveting pliers assembly 32 operates. The lower riveting block 322 is pushed by the second oil cylinder 323 to rivet the side plate 33 and the head of the spiral plate 34 flat.

[0057] S7. The Y-axis servo motor 12 drives the Y-axis lead screw 8 to rotate through the synchronous shaft 10 and the sliding gear set 9, causing the two side plates 33 to move backward synchronously until the end face of the spiral plate 34 is basically aligned with the center of the lower roller 305. Meanwhile, the fifth cylinder 324 resets, causing the entire riveting pliers assembly 32 to retract.

[0058] S8. The third cylinder 313 pulls the pressure arm 312 to move, making the end face of the upper pressure wheel 315 on the pressure arm 312 flush with the inner side of the side plate 33.

[0059] S9. The first oil cylinder 314 pulls up the tail of the pressure arm 312. With the fixed pin 311 as the central axis, the upper pressure wheel 315 at the head of the pressure arm 312 presses the heads of the side plate 33 and the spiral plate 34 flat.

[0060] S10. The Y-axis servo motor 12 drives the Y-axis lead screw 8 to rotate through the synchronous shaft 10 and the sliding gear set 9, causing the two side plates 33 to move forward synchronously. When the straight section of the side plate 33 is completely engaged, the Y-axis servo motor 12 stops, and the side plate 33 no longer moves. Then, driven by the main shaft servo motor 15, the tooling plate 23 makes the side plate 33 rotate until the side plate 33 and the spiral plate 34 are completely engaged and assembled.

[0061] S11. The third cylinder 313 pushes the pressure arm 312, causing the upper pressure wheel 315 on the pressure arm 312 to disengage from the engaged edge of the side plate 33 and the spiral plate 34. Meanwhile, the first cylinder 14 resets upward. The assembled blower volute is grasped by the manipulator. The X-axis servo motor 4 operates, causing the two tooling plates 23 to move away from each other, completely disengaging the tooling plate 23 from the side plate 33. The manipulator grabs and takes away the assembled blower volute.

[0062] S12. The automatic assembly machine resets and waits for the assembly of the next blower volute.

[0063] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An automatic assembly machine for a fan volute, characterized in that: including a workbench (2) and a frame (1), wherein the workbench (2) is fixedly connected to the frame (1); a first slide plate (3) and an X-axis servo motor (4), there are two first slide plates (3), and the two first slide plates (3) are arranged one on the left and one on the right on the tabletop of the workbench (2). The two first slide plates (3) and the workbench (2) form a relative sliding structure through a guide rail and slider manner. The X-axis servo motor (4) is fixed on the tabletop of the workbench (2) and drives the two first slide plates (3) to approach or move away from each other along the X-axis direction through a double-headed lead screw (5) at the shaft end; a second slide plate (6) and a vertical plate (7), the second slide plate (6) is slidably arranged above the first slide plate (3) through a guide rail and slider manner. A Y-axis lead screw (8) is also arranged on the first slide plate (3) to drive the second slide plate (6) to slide along the Y-axis direction. The vertical plate (7) is vertically and fixedly connected to the second slide plate (6); a synchronous drive mechanism, which is used to drive the two Y-axis lead screws (8) to rotate synchronously to ensure that the two second slide plates (6) slide synchronously along the Y-axis direction; a third slide plate (13) and a first cylinder (14), the third slide plate (13) is arranged on the side of the vertical plate (7) through a guide rail and slider manner. The first cylinder (14) is fixed on the vertical plate (7) and is used to drive the third slide plate (13) to slide along the Z-axis direction; a side plate locking assembly, which is arranged on the third slide plate (13) and is used for locking the side plate (33). The side plate locking assembly includes a main bearing seat (22) fixed on the third slide plate (13) and a main shaft (21) rotatably arranged in the main bearing seat (22); a main shaft drive assembly, which is arranged on the third slide plate (13) and is used to drive the main shaft (21) to rotate; a spiral plate support assembly, which is used for supporting the spiral plate (34); a lower roller assembly (30), which is used to form a support at the edge of the lower part of the spiral plate (34) during assembly. The lower roller assembly (30) includes a lower roller bearing seat (301), a lower roller shaft (302) arranged in the lower roller bearing seat (301), and a lower roller (305) arranged at the inner end of the lower roller shaft (302); Upper pressing wheel assembly (31), the upper pressing wheel assembly (31) is used to be pressed against the upper edge of the volute plate (34) during assembly. The upper pressing wheel assembly (31) includes a fixed pin (311), a pressing arm (312), a third cylinder (313), and a first oil cylinder (314). The fixed pin (311) is connected to the first slide plate (3) through a bracket. The middle part of the pressing arm (312) is inserted through the fixed pin (311). One end of the pressing arm (312) is provided with an upper pressing wheel (315) to form a squeezing effect with the lower roller (305). The first oil cylinder (314) is connected to the first slide plate (3) through a bracket and is used to drive the pressing arm (312) to rotate around the fixed pin (311) as the central axis. The third cylinder (313) is connected to the first slide plate (3) through a bracket and is used to drive the pressing arm (312) to move along the axial direction of the fixed pin (311). Riveting pliers assembly (32), the riveting pliers assembly (32) is used to pre-rivet and flatten the side plate (33) and the head of the volute plate (34) during assembly.

2. The automatic assembly machine for a fan volute according to claim 1, characterized in that: The synchronous drive mechanism includes a synchronous shaft (10) and a sliding gear set (9). The synchronous shaft (10) is in transmission connection with a Y-axis servo motor (12) fixed on the frame (1) through a synchronous belt (11). The synchronous shaft (10) is in transmission connection with the Y-axis lead screw (8) through the sliding gear set (9).

3. The automatic assembling machine for a fan volute according to claim 2, wherein: The sliding gear set (9) includes an X-axis bevel gear (91), a Y-axis bevel gear (92), a gear sliding sleeve (93), and a thrust ball bearing baffle (94). The synchronous shaft (10) drives the X-axis bevel gear (91) and the gear sliding sleeve (93) to rotate through a key. The Y-axis bevel gear (92) is fixed on the Y-axis lead screw (8) and meshes with the X-axis bevel gear (91).

4. The automatic assembling machine for a fan volute according to claim 3, wherein: The side plate locking assembly further includes a second cylinder (18) fixed on the third slide plate (13), a tooling plate (23) and a positioning ring (24) fixedly connected to the inner end of the main shaft (21), and a pull rod (20) inserted into the main shaft (21). The second cylinder (18) is connected to the pull rod (20) through a rotary joint (19). The inner end of the pull rod (20) is fixedly connected with a hinge support (27). The hinge support (27) is connected to the telescopic strip (25) through a connecting rod (26). When the pull rod (20) is tightened by the second cylinder (18), it can drive the telescopic strip (25) to extend out of the end face of the positioning ring (24) to realize the locking of the side plate (33).

5. The automatic assembling machine for a fan volute according to claim 4, characterized in that: The main shaft drive assembly includes a main shaft servo motor (15), a gear (16) provided at the output end of the main shaft servo motor (15), and a gear ring (17) concentrically and fixedly connected to the main shaft (21). The gear (16) meshes with the gear ring (17) to realize the transmission of power.

6. The automatic assembling machine for a fan volute according to claim 1, wherein: The snail support assembly comprises a smooth bar (28) and a plurality of guide wheels (29), wherein the smooth bar (28) is mounted in the middle of the workbench (2), a plurality of smooth rollers are arranged on the smooth bar (28), and the plurality of guide wheels (29) are connected to the inner edge of the first slide plate (3) via a bracket.

7. The automatic assembling machine for a fan volute according to claim 5, wherein: A limiting slider (304) and a No. 4 air cylinder (303) for driving the limiting slider (304) to slide are provided on the upper surface of the lower roller bearing seat (301), and the limiting slider (304) is movable to limit the downward position of the tooling plate (23).

8. The automatic assembling machine for a fan volute according to claim 1, wherein: The riveting clamp assembly (32) comprises a riveting clamp seat (321), a No. 2 oil cylinder (323) and a No. 5 air cylinder (324) connected below the riveting clamp seat (321); a lower riveting block (322) is provided at the axial end of the No. 2 oil cylinder (323); the lower riveting block (322) and the riveting clamp seat (321) are pressed against each other to achieve pre-riveting of the side plate (33) and the head of the worm plate (34); the No. 5 air cylinder (324) is fixedly connected to the end of the first slide plate (3); the No. 5 air cylinder (324) drives the riveting clamp seat (321) to move along the X-axis direction via a guide rail slider.

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