A piano push rod assembly device and assembly method

Abstract

This invention relates to the field of piano assembly technology, and discloses a piano push rod assembly device and assembly method, including an assembly frame, a dispensing platform, a lead screw slide, and a pneumatic clamp, and further includes: guide rails, fixedly installed on both sides of the inner wall of the assembly frame; in this invention, when the top pressure cylinder drives the lead screw slide and the push rod assembly on the clamp to approach the dispensing point of the top groove of the linkage rod, the protrusion at the end of the lead screw slide can abut against the positioning wedge, so that the first wedge can be squeezed by the inclined surface and drive the abutment rod to slide to the right along the guide groove, while the second wedge can abut against the ends of the two sets of abutments respectively through the position difference between the first inclined surface and the second inclined surface, thereby supporting the high and low joints of the push rod assembly and the linkage rod with the straightening plate respectively. This realizes the synchronous straightening of the protruding position of the push rod assembly and the linkage rod joint, thereby avoiding the sliding displacement of the force point and glue during pressing, which would easily cause sliding displacement at the joint.

Description

Technical Field

[0001] This invention relates to the field of piano assembly technology, specifically to a piano top rod assembly device and assembly method. Background Technology

[0002] The piano linkage rod is the foundation for assembling the linkage. The spoon nail, support rod, climbing wire, push rod, push rod shaft bracket, and linkage shaft bracket are all assembled on the linkage rod. Usually, the push rod and push rod shaft bracket are pre-assembled together to form the push rod assembly. When assembling the push rod assembly, first fix the linkage rod on the corresponding fixture, then place the push rod assembly on the corresponding fixture, apply adhesive to the end of the push rod shaft bracket, and then insert the adhesive-coated end into the groove of the linkage rod shaft bracket.

[0003] For example, Chinese Patent Publication No. CN218193579U discloses a piano push rod assembly device, including a feeding mechanism, a positioning fixture, a dispensing machine, and a robot. The feeding mechanism includes a pusher block, a vibratory feeder, and a driver. One side of the pusher block is provided with a limiting slot corresponding to the output port of the vibratory feeder. The limiting slot can accommodate a single push rod assembly. The driver drives the pusher block to reciprocate in a straight line, and the distance of a single movement of the pusher block is greater than or equal to the width of the limiting slot. The movement direction of the pusher block is perpendicular to the discharge direction of the vibratory feeder. The positioning fixture is provided with a clamping position for clamping the linkage rod. The output port of the dispensing machine is correspondingly set to the clamping position. The robot is used to grab the push rod assembly at the limiting slot and move it above the clamping position, and assemble the push rod assembly onto the linkage rod of the clamping position.

[0004] The cited documents mentioned above have the advantages of high automation, accurate positioning, and high assembly precision.

[0005] When the aforementioned piano push rod assembly is assembled after the glue is applied, the grippers press down on the push rod assembly and the groove in the middle of the linkage rod after applying the glue. When the grippers directly press the push rod assembly and the glued part in the groove, the pressure point and the glue will slide and shift, which makes the joint prone to sliding and displacement. In some cases, the push rod assembly may even slide out of the groove, causing deformation under stress. Furthermore, if the glue in the groove of the push rod assembly is not completely dry after connection, the push rod assembly and the linkage rod assembly part may easily fall off from the work station. Summary of the Invention

[0006] The purpose of this invention is to provide a piano top rod assembly device and assembly method, which can straighten the connection between the top rod assembly and the linkage rod to avoid sliding and displacement, and at the same time, can blow air on the glued area to make it dry faster.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a piano push rod assembly device and assembly method, comprising an assembly frame, a dispensing platform, a lead screw slide, and a pneumatic clamp, and further comprising:

[0008] Guide rails are fixedly installed on both sides of the inner wall of the assembly frame. Two sets of guide rails are fixedly installed with mounting plates near the bottom. An end plate is fixedly installed on the end of the mounting plate near the dispensing platform. A straightening plate is movably connected through the side of the end plate. A stop block is integrally formed on the end of the straightening plate away from the dispensing platform. A stop rod is movably connected through the middle of the guide groove. A first wedge and a second wedge are fixedly installed at both ends of the stop rod.

[0009] An air nozzle is fixedly installed on the top of the pneumatic clamp.

[0010] A telescopic airbag is fixedly installed at the bottom of the guide rail on the same side. A piston is fixedly installed near the top of the inner cavity of the telescopic airbag. A positioning wedge is fixedly installed at the top of the piston. An air guide tube is fixedly installed between the bottom of the telescopic airbag and the air nozzle.

[0011] Preferably, a connecting plate is fixedly installed on the top of the two sets of guide rails, and a top pressure cylinder is fixedly installed in the middle of the connecting plate. The protrusions at both ends of the lead screw slide slide slide inside the corresponding guide rail. The telescopic end of the top pressure cylinder is fixedly connected to the top of the lead screw slide slide. A gripper is installed at the bottom of the slider inside the lead screw slide slide.

[0012] Preferably, a slide plate is slidably mounted on the top electric slide of the dispensing platform, and cylinders are fixedly mounted on both sides of the top of the slide plate. The pneumatic clamp is fixedly mounted on the telescopic end of the corresponding cylinder, and the pneumatic clamp slides on both sides of the top of the slide plate. The mounting plate is fixedly mounted on the top of the dispensing platform at the end away from the guide rail.

[0013] Preferably, the top of the mounting plate is provided with guide grooves near both ends, and the first wedge and the second wedge slide inside the two sets of guide grooves respectively.

[0014] Preferably, the abutment rod moves through the two sets of guide grooves, and the first wedge and the second wedge are respectively fixedly installed with abutment springs between them and the inner wall of the guide groove.

[0015] Preferably, a reset spring is fixedly installed at the connection between the straightening plate and the end plate, and the second wedge platform is provided with a first inclined surface and a second inclined surface at the top and bottom of the end near the abutment block, respectively, and the side of the first inclined surface abuts against the end of the abutment block above.

[0016] Preferably, the first inclined side surface corresponds to the upper abutment block, and the second inclined side surface corresponds to the lower abutment block.

[0017] Preferably, the two sets of positioning wedges slide in the corresponding guide rails, with the bottom of the positioning wedges abutting against the top of the first wedge.

[0018] Preferably, a linkage rod is clamped between the two sets of pneumatic clamps, and a push rod assembly is clamped on the gripper. The bottom end of the push rod assembly is inserted into the groove in the middle of the linkage rod, and the two sets of air nozzles correspond to the grooves at the connection between the linkage rod and the push rod assembly, respectively.

[0019] Preferably, in step S1, the linkage rod is placed in the middle of the slide plate and pneumatically clamped and positioned by a pneumatic clamp. After the slide plate slides on the top of the dispensing platform to the dispensing head for dispensing, the dispensing is performed.

[0020] S2. The slide moves the linkage rod in the middle of the pneumatic clamp to below the lead screw slide. At this time, the gripper clamps the push rod assembly and then presses it down through the top pressure cylinder.

[0021] S3. The top pressure cylinder drives the lead screw slide and the top rod assembly on the gripper to come closer to the top groove of the linkage rod. The straightening plate, through synchronous cooperation, supports the high and low joints of the top rod assembly and the linkage rod. The protruding position of the top rod assembly and the linkage rod is straightened synchronously from top to bottom, so that the gripper presses the linkage rod into the groove of the top rod assembly for bonding and fixing.

[0022] S4. The extension and retraction end of the top pressure cylinder drives the lead screw slide to move upward, the centering plate is reset by the reset spring, and the positioning wedge is reset to the initial state by the extension and retraction of the corresponding first wedge and the telescopic airbag.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] In this invention, when the top-pressure cylinder drives the lead screw slide and the top rod assembly on the gripper to approach the glue application point at the top groove of the linkage rod, the protrusion at the end of the lead screw slide can abut against the positioning wedge, so that the first wedge can be squeezed by the inclined surface and drive the abutment rod to slide to the right along the guide groove. The second wedge can abut against the ends of the two sets of abutments respectively through the position difference between the first and second inclined surfaces, thereby supporting the upright plate at the high and low joints of the top rod assembly and the linkage rod. This achieves synchronous uprighting of the protruding position of the top rod assembly and the linkage rod joint, thereby avoiding the sliding displacement of the force point and the glue during pressing, which would easily cause sliding displacement at the joint.

[0025] In this invention, when the positioning wedge slides down the guide rail, it can press the piston end downward, compressing the telescopic airbag and injecting the internal gas into the air nozzle through the air pipe. This allows air to be blown onto the side while the piano top rod assembly and the linkage rod groove are being assembled under pressure, making the glue at the adhesive part dry faster. This prevents the top rod assembly and the linkage rod assembly from easily falling off the work position if the glue at the groove of the top rod assembly is not completely dry. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0027] Figure 2 This is a schematic diagram of the top cross-sectional structure of the frame in this invention;

[0028] Figure 3 This is a schematic diagram of the assembly structure of the linkage rod and the push rod assembly in this invention;

[0029] Figure 4 This is a schematic diagram of the dispensing machine structure in this invention;

[0030] Figure 5 This is a schematic diagram of the side cross-sectional structure of the connecting plate in this invention;

[0031] Figure 6 for Figure 4 A magnified view of the structure at point A in the middle;

[0032] Figure 7 for Figure 5 A magnified schematic diagram of the structure at point B in the middle.

[0033] In the diagram: 100, Assembly frame; 200, Dispensing platform; 300, Lead screw slide; 400, Mounting plate; 500, Pneumatic clamp; 600, Air nozzle; 700, Telescopic airbag; 11, Connecting plate; 12, Top pressure cylinder; 13, Guide rail; 21, Slide plate; 31, Gripper; 40, End plate; 41, Guide groove; 42, First wedge; 43, Contact spring; 44, Abutting rod; 45, Second wedge; 401, Straightening plate; 402, Return spring; 403, Abutting block; 451, First inclined plane; 452, Second inclined plane; 51, Linkage rod; 52, Top rod assembly; 71, Piston; 72, Positioning wedge; 73, Air guide pipe. Detailed Implementation

[0034] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. The described embodiments are only some embodiments of the present invention, and not all embodiments.

[0035] Example 1:

[0036] This embodiment describes a piano push rod assembly device and assembly method, such as... Figures 1-7 As shown, it includes an assembly frame 100, a dispensing platform 200, a lead screw slide 300, and a pneumatic clamp 500, and also includes:

[0037] Guide rails 13 are fixedly installed on both sides of the inner wall of the assembly frame 100. Two sets of guide rails 13 are fixedly installed with mounting plates 400 near the bottom. An end plate 40 is fixedly installed on one end of the mounting plate 400 near the dispensing platform 200. A straightening plate 401 is movably connected through the side of the end plate 40. A stop block 403 is integrally formed on the end of the straightening plate 401 away from the dispensing platform 200. A stop rod 44 is movably connected through the middle of the guide groove 41. A first wedge 42 and a second wedge 45 are fixedly installed at both ends of the stop rod 44.

[0038] Among them, the top of the two sets of guide rails 13 are fixedly installed with connecting plates 11, and the middle of the connecting plates 11 is fixedly installed with top pressure cylinders 12. The protrusions at both ends of the lead screw slide 300 slide inside the corresponding guide rails 13. The telescopic end of the top pressure cylinder 12 is fixedly connected to the top of the lead screw slide 300. The bottom of the slider inside the lead screw slide 300 is equipped with a gripper 31. After the top rod assembly 52 is clamped by the gripper 31, the top pressure cylinder 12 presses down, so that the gripper 31 presses the linkage rod 51 into the groove of the top rod assembly 52 for bonding and fixing.

[0039] Among them, a slide plate 21 is slidably installed on the top electric slide of the dispensing platform 200. Cylinders are fixedly installed on both sides of the top of the slide plate 21. Pneumatic clamps 500 are fixedly installed on the telescopic ends of the corresponding cylinders. The pneumatic clamps 500 slide on both sides of the top of the slide plate 21. The mounting plate 400 is fixedly installed at the top of the dispensing platform 200 at the end away from the guide rail 13. After the linkage rod 51 is pneumatically clamped in the middle of the slide plate 21 by the pneumatic clamps 500, it slides on the top of the dispensing platform 200 to the dispensing head to dispense glue, and then moves to the bottom of the lead screw slide 300.

[0040] Among them, the top of the mounting plate 400 is provided with guide grooves 41 through the two ends. The first wedge 42 and the second wedge 45 slide in the two sets of guide grooves 41 respectively. The abutment rod 44 moves through the two sets of guide grooves 41. The first wedge 42 and the second wedge 45 are fixedly installed with abutment springs 43 between them and the inner wall of the guide groove 41. When the top pressure cylinder 12 drives the lead screw slide 300 and the top rod assembly 52 on the gripper 31 to come close to the top groove of the linkage rod 51, the protrusion at the end of the lead screw slide 300 can abut against the positioning wedge 72, so that the first wedge 42 can be squeezed by the inclined surface and drive the abutment rod 44 to slide to the right along the guide groove 41.

[0041] A return spring 402 is fixedly installed at the connection between the straightening plate 401 and the end plate 40. The second wedge 45 is provided with a first inclined surface 451 and a second inclined surface 452 at the top and bottom of the end near the abutment block 403, respectively. The side of the first inclined surface 451 abuts against the end of the upper abutment block 403 and the side of the second inclined surface 452 abuts against the lower abutment block 403. The two sets of positioning wedges 72 slide in the corresponding guide rails 13. The bottom of the positioning wedge 72 is in contact with the top of the first wedge 42. The second wedge 45 can abut against the ends of the two sets of abutment blocks 403 respectively through the position difference between the first inclined surface 451 and the second inclined surface 452. Thus, the straightening plate 401 supports the high and low joints of the top rod assembly 52 and the linkage rod 51. This realizes the synchronous straightening of the protruding position of the top rod assembly 52 and the linkage rod 51, thereby avoiding the sliding displacement of the force point and the glue during pressing.

[0042] In this embodiment, after the linkage rod 51 is pneumatically clamped in the middle of the slide plate 21 by the pneumatic clamp 500, the slide plate 21 slides on the top of the dispensing platform 200 to the dispensing head for dispensing. After dispensing, it moves to the bottom of the lead screw slide 300. After the clamping claw 31 clamps the top rod assembly 52, the top pressure cylinder 12 presses it down, so that the clamping claw 31 presses the linkage rod 51 into the dispensing area of ​​the groove in the middle of the top rod assembly 52 for bonding and fixing. The piano top rod assembly 52 and the linkage rod 51 are assembled by adhesive, which is a prior art solution and will not be described in detail here.

[0043] In this embodiment, when the top-pressing cylinder 12 drives the lead screw slide 300 and the top rod assembly 52 on the gripper 31 to approach the glue dotted area at the top groove of the linkage rod 51, the protrusion at the end of the lead screw slide 300 can abut against the positioning wedge 72, so that the first wedge 42 can be squeezed by the inclined surface and drive the abutment rod 44 to slide to the right along the guide groove 41. The second wedge 45 can abut against the ends of the two sets of abutment blocks 403 respectively through the position difference between the first inclined surface 451 and the second inclined surface 452, thereby supporting the uprighting plate 401 at the high and low joints of the top rod assembly 52 and the linkage rod 51. This achieves synchronous uprighting of the protruding position of the top rod assembly 52 and the linkage rod 51, thereby avoiding the sliding displacement of the force point and glue during pressing, which would easily cause sliding displacement at the joint.

[0044] Example 2:

[0045] Based on Example 1, this example introduces a piano top rod assembly device and assembly method, such as... Figure 5 , Figure 7 As shown, it includes: an air nozzle 600, which is fixedly installed on the top of the pneumatic clamp 500;

[0046] A telescopic airbag 700 is fixedly installed at the bottom of the guide rail 13 on the same side. A piston 71 is fixedly installed near the top of the inner cavity of the telescopic airbag 700. A positioning wedge 72 is fixedly installed at the top of the piston 71. An air guide tube 73 is fixedly installed between the bottom of the telescopic airbag 700 and the air nozzle 600.

[0047] Among them, the two sets of pneumatic clamps 500 hold the linkage rod 51, and the jaw 31 is equipped with the push rod assembly 52. ​​The bottom end of the push rod assembly 52 is inserted into the groove in the middle of the linkage rod 51. The two sets of air nozzles 600 correspond to the grooves at the connection between the linkage rod 51 and the push rod assembly 52, respectively. When the positioning wedge 72 slides down along the guide rail 13, it can press the end of the piston 71 downward, so that the telescopic air bag 700 is compressed, thereby injecting the internal gas into the air nozzle 600 through the air guide pipe 73. In this way, while the piano push rod assembly 52 is pressed and assembled at the glued area of ​​the groove of the linkage rod 51, air can be blown on the side, so that the glue at the glued area dries faster.

[0048] S1. The linkage rod 51 is placed in the middle of the slide plate 21 and pneumatically clamped and positioned by the pneumatic clamp 500. After the slide plate 21 slides on the top of the dispensing platform 200 to the dispensing head for dispensing;

[0049] S2, the slide plate 21 drives the linkage rod 51 in the middle of the pneumatic clamp 500 to move below the lead screw slide 300. At this time, the gripper 31 clamps the top rod assembly 52 and then presses it down through the top pressure cylinder 12.

[0050] S3, the top pressure cylinder 12 drives the lead screw slide 300 and the gripper 31 to bring the top rod assembly 52 and the top groove of the linkage rod 51 closer together. The straightening plate 401, through synchronous cooperation, supports the high and low joints of the top rod assembly 52 and the linkage rod 51. The protruding joint of the top rod assembly 52 and the linkage rod 51 is straightened synchronously, so that the gripper 31 presses the linkage rod 51 into the middle groove of the top rod assembly 52 for bonding and fixing.

[0051] S4. The extension end of the top pressure cylinder 12 drives the lead screw slide 300 to move upward, the straightening plate 401 is reset by the reset spring 402, and the positioning wedge 72 is reset to the initial state by the extension and retraction of the corresponding first wedge 42 and the telescopic airbag 700.

[0052] In this embodiment, when the positioning wedge 72 slides down along the guide rail 13, it can press the end of the piston 71 downward, thereby compressing the telescopic airbag 700 and injecting the internal gas into the air nozzle 600 through the air guide pipe 73. In this way, while the piano top rod assembly 52 and the linkage rod 51 are assembled by pressing at the groove glued area, air can be blown on the side, so that the glue at the glued area dries faster. This avoids the top rod assembly 52 and the linkage rod 51 assembly part from easily falling off the work position if the glue at the groove of the top rod assembly is not completely dry after connection.

[0053] Working principle: When assembling the piano push rod assembly 52, the linkage rod 51 is first placed in the middle of the slide plate 21 and pneumatically clamped and positioned by the pneumatic clamp 500. After the slide plate 21 slides on the top of the dispensing platform 200 to the dispensing head for dispensing, it moves to the bottom of the lead screw slide 300 and the gripper 31 clamps the push rod assembly 52.

[0054] Then, the top pressure cylinder 12 is pressed down. At this time, when the top pressure cylinder 12 drives the lead screw slide 300 and the top rod assembly 52 on the gripper 31 to come closer to the top groove of the linkage rod 51, the protrusion at the end of the lead screw slide 300 can abut against the positioning wedge 72, so that the first wedge 42 can be squeezed by the inclined surface and drive the abutment rod 44 to slide to the right along the guide groove 41. The second wedge 45 can abut against the ends of the two sets of abutment blocks 403 respectively through the position difference between the first inclined surface 451 and the second inclined surface 452, so that the straightening plate 401 supports the high and low joints of the top rod assembly 52 and the linkage rod 51 respectively. In this way, the protruding position of the top rod assembly 52 and the linkage rod 51 is straightened up and down at the same time, so that the gripper 31 presses the linkage rod 51 into the groove of the top rod assembly 52 for bonding and fixing.

[0055] At the same time, when the positioning wedge 72 slides down along the guide rail 13, it can press the end of the piston 71 downward, so that the telescopic air bag 700 is compressed, thereby injecting the internal gas into the air nozzle 600 through the air pipe 73. In this way, while the piano top rod assembly 52 and the linkage rod 51 are pressed and assembled at the groove glue dot, air can be blown to the side, so that the glue at the glued part dries faster.

[0056] Finally, the extension end of the top pressure cylinder 12 drives the lead screw slide 300 to move upward, the straightening plate 401 is reset by the reset spring 402, and the first wedge 42 and the second wedge 45 at both ends of the abutment rod 44 are also reset by the deformation initially generated by the abutment spring 43, and the positioning wedge 72 is reset to the initial state by the extension and retraction of the corresponding first wedge 42 and the telescopic airbag 700.

[0057] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes and modifications can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A piano push rod assembly assembly device, comprising an assembly frame (100), a dispensing platform (200), a lead screw slide (300), and a pneumatic clamp (500), characterized in that, Also includes: Guide rails (13) are fixedly installed on both sides of the inner wall of the assembly frame (100). Two sets of guide rails (13) are fixedly installed with mounting plates (400) near the bottom. An end plate (40) is fixedly installed on one end of the mounting plate (400) near the dispensing platform (200). A straightening plate (401) is movably connected through the side of the end plate (40). A stop block (403) is integrally formed on the end of the straightening plate (401) away from the dispensing platform (200). A guide groove (41) is opened through the top of the mounting plate (400) near both ends. A stop rod (44) is movably connected through the middle of the guide groove (41). A first wedge (42) and a second wedge (45) are fixedly installed at both ends of the stop rod (44). An air nozzle (600) is fixedly installed on the top of the pneumatic clamp (500); A telescopic airbag (700) is fixedly installed at the bottom of the guide rail (13) on the same side. A piston (71) is fixedly installed near the top of the inner cavity of the telescopic airbag (700). A positioning wedge (72) is fixedly installed at the top of the piston (71). An air guide tube (73) is fixedly installed between the bottom of the telescopic airbag (700) and the air nozzle (600). A connecting plate (11) is fixedly installed on the top of the two sets of guide rails (13). A top-pressure cylinder (12) is fixedly installed in the middle of the connecting plate (11). The protrusions at both ends of the lead screw slide (300) slide inside the corresponding guide rail (13). The telescopic end of the top-pressure cylinder (12) is fixedly connected to the top of the lead screw slide (300). A gripper (31) is installed at the bottom of the slider inside the lead screw slide (300). The first wedge (42) and the second wedge (45) slide in the two sets of guide grooves (41) respectively. Inside, a reset spring (402) is fixedly installed at the connection between the straightening plate (401) and the end plate (40). The second wedge (45) is provided with a first inclined surface (451) and a second inclined surface (452) at the top and bottom of the end near the abutment (403). The side of the first inclined surface (451) abuts against the end of the abutment (403) above. The side of the first inclined surface (451) corresponds to the abutment (403) above. The side of the second inclined surface (452) corresponds to the abutment (403) below.

2. The piano push rod assembly assembly device according to claim 1, characterized in that: A slide plate (21) is slidably mounted on the top electric slide of the dispensing platform (200). Cylinders are fixedly mounted on both sides of the top of the slide plate (21). The pneumatic clamp (500) is fixedly mounted on the telescopic end of the corresponding cylinder. The pneumatic clamp (500) slides on both sides of the top of the slide plate (21). The mounting plate (400) is fixedly mounted on the top of the dispensing platform (200) at the end away from the guide rail (13).

3. The piano top rod assembly assembly device according to claim 2, characterized in that: The abutment (44) moves through the two sets of guide grooves (41), and the first wedge (42) and the second wedge (45) are respectively fixedly installed with abutment springs (43) between them and the inner wall of the guide groove (41).

4. The piano top rod assembly assembly device according to claim 3, characterized in that: The two sets of positioning wedges (72) slide in the corresponding guide rails (13), and the bottom of the positioning wedges (72) is in contact with the top of the first wedge (42).

5. The piano push rod assembly assembly device according to claim 4, characterized in that: The two sets of pneumatic clamps (500) clamp a linkage rod (51), and a top rod assembly (52) is clamped on the jaw (31). The bottom end of the top rod assembly (52) is inserted into the groove in the middle of the linkage rod (51). The two sets of air nozzles (600) correspond to the grooves at the connection between the linkage rod (51) and the top rod assembly (52).

6. An assembly method using the piano top rod assembly device as described in claim 5, characterized in that: S1. Place the linkage rod (51) in the middle of the slide plate (21) and position it by pneumatic clamping (500). After the slide plate (21) slides on the top of the dispensing platform (200) to the dispensing head for dispensing; S2, the slide (21) drives the linkage rod (51) in the middle of the pneumatic clamp (500) to move below the lead screw slide (300). At this time, the gripper (31) clamps the top rod assembly (52) and then presses it down through the top pressure cylinder (12). S3, the top pressure cylinder (12) drives the lead screw slide (300) and the clamp (31) to bring the top rod assembly (52) and the top groove of the linkage rod (51) closer together. The straightening plate (401) supports the high and low joints of the top rod assembly (52) and the linkage rod (51) through synchronous cooperation. The protruding joint of the top rod assembly (52) and the linkage rod (51) is straightened up and down synchronously, so that the clamp (31) presses the linkage rod (51) into the groove of the top rod assembly (52) for bonding and fixing. S4. The extension end of the top pressure cylinder (12) drives the lead screw slide (300) to move upward, the straightening plate (401) is reset by the reset spring (402), and the positioning wedge (72) is reset to the initial state by the extension and retraction of the corresponding first wedge (42) and the telescopic airbag (700).

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