Nut mounting mechanism of a dropper automatic assembly machine

Abstract

The application relates to a nut mounting mechanism of a drip cup automatic assembling machine, which comprises a nut pressing mechanism, a jig located below the nut pressing mechanism and a material supporting assembly located below the jig. The nut pressing mechanism comprises a material pressing cylinder, a nut mounting pressing block is connected to a piston rod of the material pressing cylinder, a material pressing hole is formed in the nut mounting pressing block, a puncture device is placed on the jig, a nut is sleeved on the puncture device, and the material supporting assembly comprises a plurality of cam bearing followers. Compared with the prior art, the nut is automatically extruded to be mounted in place through the nut pressing mechanism, the nut pressing mechanism can provide sufficient force to make the nut pressing process faster and more efficient, the puncture device is placed in the jig during nut pressing, a supporting top plate of the jig is in contact with the material supporting assembly, and the material supporting assembly supports the jig.

Description

Technical Field

[0001] This invention relates to a nut mounting mechanism for an automatic dripping bucket assembly machine, belonging to the field of medical device technology. Background Technology

[0002] The drip chamber assembly includes the drip chamber, the puncture device, and the sheath. The puncture device is mounted on the drip chamber, the sheath is fitted over the puncture device, and the puncture device is also fitted with a nut and a sealing ring. The drip chamber assembly is an important medical device used for human injection. For injection hygiene and safety, it is necessary to ensure that the drip chamber assembly is not contaminated during the production process. Currently, there are automated machines that can handle the feeding process of the various components of the drip chamber assembly. However, after feeding, the drip chamber assembly still needs to be assembled manually, especially the nut, which needs to be fitted onto the puncture device and squeezed to ensure that the nut is in place. However, the force required to squeeze the nut is very large, which is very laborious for manual squeezing and can easily cause bacteria to adhere to the drip chamber assembly, resulting in the product failing to meet hygiene requirements. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing technologies by providing a nut installation mechanism for an automatic dripping bucket assembly machine that automatically squeezes the nut to ensure proper installation.

[0004] To achieve the objective, the technical solution adopted by this invention is:

[0005] The nut mounting mechanism of the automatic dripping bucket assembly machine includes a nut pressing mechanism, a fixture located below the nut pressing mechanism, and a material supporting assembly located below the fixture. The nut pressing mechanism includes a pressing cylinder, and a nut mounting block is connected to the piston rod of the pressing cylinder. The nut mounting block has a pressing hole. A piercing device is placed on the fixture, and a nut is fitted on the piercing device. The material supporting assembly includes several cam bearing followers. The pressing cylinder drives the nut mounting block to move downward, and the part of the piercing device protruding from the nut enters the pressing hole. The nut mounting block squeezes the nut on the piercing device. During squeezing, the bottom of the fixture contacts the cam bearing followers.

[0006] As a further optimization of the above technical solution: the fixture includes an upper fixture block and a lower fixture block. The upper fixture block is located on top of the lower fixture block. The upper fixture block has several puncture holes. The puncture device is located in the puncture hole. The bottom of the puncture device is in contact with the top of the lower fixture block. The lower fixture block has a second guide post hole and a fourth guide post hole. A second guide post and an oil-free bushing are provided in the second guide post hole and the fourth guide post hole. The oil-free bushing is sleeved on the outside of the second guide post. A third limiting ring is formed on the top of the second and fourth guide post holes. The top of the oil-free bushing abuts against the third limiting ring. A supporting top plate is provided below the lower fixture block. The bottom of the second guide post is fixed on the supporting top plate. A fixture gasket is provided at the bottom of the oil-free bushing. A supporting spring is sleeved at the bottom of the second guide post. One end of the supporting spring abuts against the fixture gasket, and the other end abuts against the supporting top plate.

[0007] As a further optimization of the above technical solution: the nut mounting block includes a cylindrical fixing part and a cylindrical pressing part. The fixing part has a pressing block mounting hole, and the wall of the pressing block mounting hole is threaded. The piston rod of the pressing cylinder is threadedly installed to the fixing part through a coupling. The pressing hole is located in the pressing part and communicates with the pressing block mounting hole. The diameter of the fixing part is larger than the diameter of the pressing part, and the diameter of the pressing hole is larger than the diameter of the pressing block mounting hole.

[0008] As a further optimization of the above technical solution, it also includes a pressure sensor fixing plate, on the bottom of which a pressure sensor is fixed, and on the top of which a reset sensor is fixed. A pressure sensing plate is also connected to the piston rod of the pressure cylinder. The pressure sensing plate is driven up and down by the pressure cylinder. Both the pressure sensor and the reset sensor are responsible for sensing the pressure sensing plate.

[0009] As a further optimization of the above technical solution, it also includes a nut mounting base plate and a lower pressing base. A pressing back plate is fixed on the nut mounting base plate, and a second pressing reinforcing rib is fixed between the pressing back plate and the nut mounting base plate. A pressing column is fixed on the lower pressing base, and an upper pressing base is fixed on the pressing column. A pressing top plate is installed between the top of the pressing back plate and the top of the upper pressing base. The pressing cylinder is installed on the pressing top plate, and a first pressing reinforcing rib is fixed between the pressing top plate and the pressing back plate. A pressing connecting block is fixed on the pressing column, and a pressing sensor fixing plate is fixed to one side of the pressing connecting block.

[0010] As a further optimization of the above technical solution: the lower fixture block is also provided with a first guide post hole, a third guide post hole and a fifth guide post hole, the second guide post hole is located between the first guide post hole and the third guide post hole, the fourth guide post hole is located between the third guide post hole and the fifth guide post hole, and a first guide post is provided in the first guide post hole, the third guide post hole and the fifth guide post hole, and the bottom of the first guide post is fixed to the support top plate.

[0011] As a further optimization of the above technical solution: the top of the lower fixture block is also provided with more than one first protrusion, and a groove is formed between two adjacent first protrusions. The side of the upper fixture block is provided with second protrusions that correspond one-to-one with the grooves, and the second protrusions are located in the grooves.

[0012] As a further optimization of the above technical solution: the material support assembly includes a material support base plate, a material support plate is installed on the material support base plate, a bearing fixing plate is installed on the material support plate, the cam bearing follower is installed on the bearing fixing plate, and when the nut mounting block squeezes the nut on the puncture device, the bottom of the support top plate contacts the cam bearing follower.

[0013] As a further optimization of the above technical solution: the bearing fixing plate is provided with several vertically arranged elongated material support fixing holes, screws pass through the material support fixing holes and install the bearing fixing plate on the material support plate, the material support plate is also provided with a material support block, the material support block is located at the bottom of the bearing fixing plate, and a material support reinforcing plate is installed between the material support plate and the material support base plate.

[0014] Compared with the prior art, the present invention achieves automatic compression of the nut through the nut pressing mechanism to ensure that the nut is installed in place. The nut pressing mechanism can provide sufficient force to make the nut pressing process faster and more efficient. Furthermore, the material pressing sensor and the material pressing induction plate work together to prevent the nut installation pressure block from being over-compressed, which is safe and reliable. When pressing the nut, the piercing device is placed in the fixture, and the support top plate of the fixture is in contact with the material support assembly, which supports the fixture. Attached Figure Description

[0015] Figure 1 This is a structural schematic diagram of an automatic dripping bucket assembly machine.

[0016] Figure 2 This is a three-dimensional structural diagram of the ring track fixture device in the automatic dripping bucket assembly machine.

[0017] Figure 3 This is a three-dimensional structural diagram of the rotor in the automatic dripping bucket assembly machine.

[0018] Figure 4 This is a three-dimensional structural diagram of the fixture in the automatic drip assembly machine.

[0019] Figure 5 yes Figure 4 A schematic diagram of the cross-sectional structure along section line AA.

[0020] Figure 6 This is a three-dimensional structural diagram of the rotating sleeve, the first bearing sleeve, and the clamping block in the automatic dripping bucket assembly machine.

[0021] Figure 7 This is a three-dimensional structural diagram of the lower fixture block in an automatic drip assembly machine.

[0022] Figure 8 This is a three-dimensional structural diagram of the lower fixture block in the automatic drip assembly machine from another angle.

[0023] Figure 9 This is a three-dimensional structural diagram of the upper fixture block in the automatic drip assembly machine.

[0024] Figure 10 This is a three-dimensional structural diagram of the present invention.

[0025] Figure 11 This is a three-dimensional structural diagram of the pressure nut mechanism in this invention.

[0026] Figure 12 This is a cross-sectional structural diagram of the nut mounting block in this invention.

[0027] Figure 13 This is a three-dimensional structural diagram of the material support component in this invention. Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. For example... Figure 1-13 As shown, the automatic dripping bucket assembly machine includes a support frame 10, a ring track fixture device 1, a piercing device feeding device 2, a nut feeding device 3, a sealing ring feeding device 4, a dripping bucket feeding device 5, an assembly device 6, a vision inspection device 65, a sheath feeding device 7, a finished product unloading device 8, and a defective product unloading device 9.

[0029] In the above technical solution: the ring track fixture device 1 includes a ring track support plate 111 fixed on the support frame 10, and a ring track base plate 112 fixed to the top of the ring track support plate 111. A ring of fixture guide rails 114 is installed on the ring track base plate 112, and the fixture guide rails 114 are racetrack shaped. A ring of module fixing blocks 113 is also installed on the ring track base plate 112, and a ring of suspended modules 115 is installed on the side of the module fixing blocks 113. The fixture guide rails 114 are located directly below the suspended modules 115. A ring track pad 19 is also installed on the top of the module fixing blocks 113, and an opening is formed on the ring track pad 19, on which a ring track cover plate 110 is installed.

[0030] In the above technical solution: the ring track fixture device 1 also includes a rotor 13 that circulates on the fixture guide rail 114. In this embodiment, there are twenty-one rotors 13. The suspension module 115, the fixture guide rail 114, and the rotors 13 cooperate to form a magnetic levitation system, realizing the circulatory movement of the rotors 13. Figure 2 , 3 As shown, the rotor 13 includes a C-shaped mating block 131 and rollers located at the bottom of the mating block 131. Due to magnetic force, the mating block 131 never contacts the suspension module 115 and is driven by the magnetic force to move along the suspension module 115. The rollers include an inner roller 132 and an outer roller 133. In this embodiment, there is one inner roller 132 and two outer rollers 133. The inner and outer rollers 132 and 133 are located on both sides of the fixture guide rail 114, and the rollers cooperate with the fixture guide rail 114 to provide a guiding function. The arrangement of the inner roller 132 and outer rollers 133 makes the operation smoother and safer.

[0031] In the above technical solution: each mating block 131 has a fixture 15 on its side, and the fixture 15 includes a first fixture block and a second fixture block 153. The first fixture block includes an upper fixture block 151 and a lower fixture block 152. Figure 3 As shown, one side of the mating block 131 has a positioning hole 1311. In this embodiment, two positioning holes 1311 are provided and arranged side by side. Several first mounting holes 1312 are also provided on this side of the mating block 131. One side of the lower fixture block 152 has a first positioning groove 1501 corresponding to the positioning hole 1311. Figure 4 As shown, the opening of the first positioning groove 1501 is provided with a first retaining groove, and a first positioning pin 1502 is provided inside the first positioning groove 1501. A first retaining ring is provided in the middle of the first positioning pin 1502, and the first retaining ring is located in the first retaining groove. The part of the first positioning pin 1502 that protrudes from the first positioning groove 1501 is located in the positioning hole 1311. The lower fixture block 152 is also provided with a second mounting hole 1503 that corresponds one-to-one with the first mounting hole 1312. The screw passes through the first mounting hole 1312 and the second mounting hole 1503 and installs the lower fixture block 152 onto the mating block 131. Before the lower fixture block 152 and the mating block 131 are installed, the two ends of the first positioning pin 1502 are located in the first positioning groove 1501 and the positioning hole 1311, respectively. The first positioning pin 1502 plays a positioning role in the subsequent installation process between the lower fixture block 152 and the mating block 131, making the installation faster and more accurate.

[0032] In the above technical solutions: such as Figure 5 , 7As shown, a second positioning groove 1504 is formed on the other side of the lower fixture block 152. In this embodiment, two second positioning grooves 1504 are provided and arranged side by side. A second retaining groove 1505 is formed around the opening of the second positioning groove 1504. Several fixture mounting grooves 1506 are also formed on this side of the lower fixture block 152. A third positioning groove 1531 corresponding to the second positioning groove 1504 is formed on one side of the second fixture block 153. A second positioning pin 1507 is provided in the second positioning groove 1504. A second retaining ring 1508 is formed in the middle of the second positioning pin 1507. The second retaining ring 1508 is located in the second retaining groove 1505. The part of the second positioning pin 1507 that protrudes from the second positioning groove 1504 is located in the third positioning groove 1531. The second fixture block 153 has a third mounting hole 1532 that corresponds to the fixture mounting groove 1506. The screw passes through the third mounting hole 1532 and is fixed in the fixture mounting groove 1506, thereby installing the second fixture block 153 on the lower fixture block 152.

[0033] In the above technical solutions: such as Figure 4 , 5 As shown in Figure 6, the second fixture block 153 has several drip holes. In this embodiment, four drip holes are provided. A first limiting ring is formed at the top of each drip hole. A rotating sleeve 1533 and a first bearing sleeve 1534 are disposed inside the drip hole. The first bearing sleeve 1534 is fitted onto the outside of the rotating sleeve 1533. A fixture support plate 1535 is installed at the bottom of the second fixture block 153. The first bearing sleeve 1534 is limited by the first limiting ring and the fixture support plate 1535. The rotating sleeve 1533 is used to hold the drip bucket. One end of the drip bucket is used to install the puncture device (hereinafter referred to as the puncture device end), and the other end, which is smaller in size, is used to connect the catheter (hereinafter referred to as the catheter end). After placement, the catheter end of the drip bucket is positioned downwards and exposed at the bottom of the rotating sleeve 1533.

[0034] In the above technical solutions: such as Figure 6 As shown, the bottom of the rotating sleeve 1533 passes through the first bearing sleeve 1534 and is fitted with a clamping block 159. The clamping block 159 includes a retaining ring 1591, a clamping ring 1592 located below the retaining ring 1591, and a connecting part connecting the two. The clamping ring 1592 has an adjustment opening 1596, and bolt inlets 1593 and bolt outlets 1594 are respectively formed on both sides of the adjustment opening 1596. The bolt passes through the bolt inlet 1593 and the bolt outlet 1594 in sequence and engages with the nut. The bolt inlet 1593 also has a mounting platform 1595, and the head of the bolt is in close contact with the mounting platform 1595. When the adjustment opening 1596 needs to be reduced, the bolt is positioned with a screwdriver, and the nut is rotated toward the head of the bolt until the adjustment opening 1596 is reduced to the required extent.

[0035] In the above technical solutions: such as Figure 4 ,5 As shown in Figure 8, Figure 5 for Figure 4 In the cross-sectional view along section line A-A, the lower jig block 152 has sequentially formed first guide post holes 1521, second guide post holes 1522, third guide post holes 1523, fourth guide post holes 1524, and fifth guide post holes 1525. First guide posts 1509 are installed in the first guide post holes 1521, third guide post holes 1523, and fifth guide post holes 1525, and second guide posts 154 are installed in the second guide post holes 1522 and fourth guide post holes 1524. A supporting top plate 158 is provided below the lower jig block 152, and the bottoms of the first guide posts 1509 and second guide posts 154 are fixed to the supporting top plate 158. Figure 8 As shown, the bottoms of the first, third, and fifth guide post holes 1521, 1523, and 1525 are provided with cylindrical grooves 1526, which facilitate the assembly of the first guide post 1509. The tops of the second and fourth guide post holes 1522 and 1524 are provided with a third limiting ring 1527, as shown... Figure 5 , 8 As shown, an oil-free bushing 155 is fitted on the second guide post 154. The top of the oil-free bushing 155 abuts against the third limiting ring 1527. A fixture pad 156 is provided at the bottom of the oil-free bushing 155. A support spring 157 is fitted at the bottom of the second guide post 154. One end of the support spring 157 abuts against the fixture pad 156, and the other end abuts against the support top plate 158.

[0036] In the above technical solutions: such as Figure 4 , 7 As shown in Figure 9, the top of the lower fixture block 152 is provided with more than one first protrusion 1528, and a groove 1529 is formed between two adjacent first protrusions 1528. The upper fixture block 151 is located on top of the lower fixture block 152, and the side of the upper fixture block 151 is provided with second protrusions 1511 corresponding to the grooves 1529. The second protrusions 1511 are located in the grooves 1529. The upper fixture block 151 is provided with a plurality of puncture holes 1512. One end of the puncture device is responsible for puncture (hereinafter referred to as the puncture end), and the other end is connected to the drip chamber (hereinafter referred to as the connection end). A puncture device step is provided between the puncture end and the connection end of the puncture device. After the puncture device is inserted into the puncture hole 1512, the connection part of the puncture device is set downward and in contact with the top of the lower fixture block 152. In this embodiment, four puncture holes 1512 are provided.

[0037] In the above technical solution: a set of material support components 18 is also provided around the ring track fixture device 1. The material support component 18 includes a material support base plate 181 fixed on the support frame 10, a material support support plate 182 installed on the material support base plate 181, and a material support reinforcing plate 183 installed between the material support support plate 182 and the material support base plate 181. Figure 13As shown, a bearing fixing plate 184 is installed on the material support plate 182. The bearing fixing plate 184 has several vertically arranged elongated material fixing holes 1841. Screws pass through the material fixing holes 1841 to install the bearing fixing plate 184 on the material support plate 182. The elongated material fixing holes 1841 allow the bearing fixing plate 184 to be moved simply by loosening the screws, without needing to remove the bearing fixing plate 184. A material support block 185 is also installed on the material support plate 182. The material support block 185 is located at the bottom of the bearing fixing plate 184 and supports the bearing fixing plate 184, preventing it from falling off the material support plate 182. Several cam bearing followers 186 are installed on the bearing fixing plate 184. The cam bearing followers 186 can be purchased directly from the market.

[0038] In the above technical solution: the nut feeding device 3 includes a nut pressing mechanism 39, such as... Figure 10 , 11 As shown, the nut pressing mechanism 39 includes a nut mounting base plate 391 fixed on the support frame 10 and a lower pressing base 3914 fixed on the ring track pad 19. A pressing back plate 393 is fixed on the nut mounting base plate 391, and a second pressing reinforcing rib 3911 is fixed between the pressing back plate 393 and the nut mounting base plate 391. A pressing column 3913 is fixed on the lower pressing base 3914, and an upper pressing base 3912 is fixed on the pressing column 3913. A pressing top plate 392 is fixed between the top of the pressing back plate 393 and the top of the upper pressing base 3912, and a first pressing reinforcing rib 3910 is fixed between the pressing top plate 392 and the pressing back plate 393.

[0039] In the above technical solution: a pressure cylinder 394 is fixed to the bottom of the pressure plate 392. A nut mounting block 395 is connected to the piston rod of the pressure cylinder 394. The nut mounting block 395 includes a cylindrical fixing part 3951 and a cylindrical pressure part 3952. The fixing part 3951 has a pressure block mounting hole 3953, and the hole wall of the pressure block mounting hole 3953 is threaded. The piston rod of the pressure cylinder 394 is threadedly mounted to the fixing part 3951 via a coupling. The pressure part 3952 has a pressure hole 3954 communicating with the pressure block mounting hole 3953. Figure 12 As shown, the diameter of the fixing part 3951 is larger than the diameter of the pressing part 3952, and the diameter of the pressing hole 3954 is larger than the diameter of the pressing block mounting hole 3953. The fixture 15 moves the piercing device and the nut to the pressing nut mechanism 39, with the piercing device located directly below the pressing hole 3954. During pressing, the pressing cylinder 394 moves the nut mounting block 395 downward, and the part of the piercing device protruding from the nut gradually enters the pressing hole 3954. The nut is moved downward by the pressing part 3952 until the nut is installed in place.

[0040] In the above technical solution: a pressing connecting block 3915 is fixed on the pressing column 3913; a pressing sensor fixing plate 3916 is fixed on one side of the pressing connecting block 3915; a pressing sensor 396 is fixed at the bottom of the pressing sensor fixing plate 3916; and a reset sensor 3918 is fixed at the top of the pressing sensor fixing plate 3916. A pressing sensing plate 397 is also connected to the piston rod of the pressing cylinder 394. The pressing sensing plate 397 is driven up and down by the pressing cylinder 394. Both the pressing sensor 396 and the reset sensor 3918 are responsible for sensing the pressing sensing plate 397. The pressing cylinder 394 drives the nut mounting block 395 and the nut to move downwards. When the pressing sensor 396 senses the pressing sensor 397, it indicates that the nut is installed in place. Then the pressing cylinder 394 drives the nut mounting block 395 to move upwards. When the reset sensor 3918 senses the pressing sensor 397, it indicates that the pressing block 395 has completely disengaged from the nut and piercing device on the fixture 15. At this time, the fixture 15 can continue to move.

[0041] In the above technical solution: a precision pressure regulating valve 399 is also fixed on the pressure back plate 393. The precision pressure regulating valve 399 controls the output force of the pressure cylinder to prevent damage to the nut.

[0042] In the above technical solution: a pressing lifting solenoid valve 3917 is also fixed on the pressing back plate 393, and the pressing lifting solenoid valve 3917 is used to control the movement of the pressing cylinder 394.

[0043] In the above technical solution: the material support assembly 18 is located below the nut mounting block 395. When the nut mounting block 395 presses the nut on the fixture 15, the bottom of the support top plate 158 contacts the cam bearing follower 186. Since the force of the nut mounting block 395 when pressing the material is relatively large, the pressure generated on the fixture 15 may damage the ring track fixture device 1. Therefore, the material support assembly 18 is provided to support the fixture 15.

[0044] The working process of this invention is as follows: the piercing device feeding device 2 feeds the piercing device into the piercing hole 1512 of the fixture 15. The fixture 15 moves the piercing device to the nut feeding device 3, which feeds the nut and places it on the piercing device. The fixture 15 moves the piercing device and the nut to the nut pressing mechanism 39. The pressing cylinder 394 moves the nut mounting block 395 downward, and the part of the piercing device protruding from the nut gradually enters the pressing hole 3954. The nut is moved downward by the pressing part 3952. When the pressing sensor 396 senses the pressing sensor plate 397, it indicates that the nut is installed in place. During the above process, the bottom of the support top plate 158 on the fixture 15 contacts the cam bearing follower 186. The downward pressing force of the nut mounting block 395 causes the upper fixture block 151 and the lower fixture block 152 to move downward a certain distance. At the same time, the oil-free bushing 155 is pressed downward by the third limiting ring 1527, and the support spring 157 is compressed. The material support assembly 18 and the support top plate 158 provide support for the downward movement of the fixture 15. The oil-free bushing 155 and the second guide post 154 guide the downward movement of the fixture 15.

[0045] Next, the pressing cylinder 394 drives the nut mounting block 395 to move upward. At this time, the pressure of the nut mounting block 395 on the fixture 5 disappears, the elastic force of the support spring 157 is released, and the upper fixture block 151 and the lower fixture block 152 reset. When the reset sensor 3918 senses the pressing sensor 397, it indicates that the pressing mounting block 395 has completely disengaged from the nut and piercing device on the fixture 15, and the fixture 15 can continue to move. The use of a rolling cam bearing follower 186 in contact with the support top plate 158 can reduce the friction between the material support assembly 18 and the fixture 15, facilitating the movement of the fixture 15 after pressing is completed.

[0046] The fixture 15 moves the piercing device and nut to the sealing ring feeding device 4, which feeds the sealing ring and places it on the piercing device. The fixture 15 then moves the piercing device, nut, and sealing ring to the drip feeding device 5, which feeds the drip into the rotating sleeve 1533 of the fixture 15. The fixture 15 then moves the piercing device, nut, sealing ring, and drip to the assembly device 6 for assembly. The assembly device 6 rotates the drip inside the fixture 15, simultaneously applying glue to the piercing end of the drip. The rotation of the drip ensures more even glue application. After the puncture end of the drip chamber is covered with a full circle of glue, the assembly device 6 stops spraying glue and moves the puncture device, which already has a nut and a sealing ring installed on the fixture 15, to directly above the drip chamber. The assembly device 6 then lowers the puncture device, and the connecting end of the puncture device gradually enters the puncture end of the drip chamber until the step of the puncture device abuts against the end of the drip chamber, and the glue completes the connection between the puncture device and the drip chamber.

[0047] Next, fixture 15 moves the assembled piercing device and dripping bucket to vision inspection device 65. Vision inspection device 65 detects and judges whether the assembly between the dripping bucket, piercing device, sealing ring, and nut is correct. When the system determines that the assembly between the dripping bucket, piercing device, sealing ring, and nut is incorrect, fixture 15 moves the incorrectly assembled defective product to defective product unloading device 9 for unloading. When the system determines that the assembly between the dripping bucket, piercing device, sealing ring, and nut is correct, fixture 15 moves to sheath feeding device 7, which feeds the sheath and places it on the piercing device. At this point, the dripping bucket assembly is complete. Fixture 15 then moves the dripping bucket assembly to finished product unloading device 8 for unloading.

[0048] The preferred embodiments of the present invention have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of the present invention without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of the present invention through logical analysis, reasoning, or limited experimentation on the basis of existing technology should fall within the protection scope of the present invention.

Claims

1. The nut mounting mechanism of the automatic dripping bucket assembly machine, characterized in that... The assembly includes a nut pressing mechanism (39), a fixture (15) located below the nut pressing mechanism (39), and a material support assembly (18) located below the fixture (15). The nut pressing mechanism (39) includes a pressing cylinder (394), and a nut mounting block (395) is connected to the piston rod of the pressing cylinder (394). The nut mounting block (395) has a pressing hole (3954) inside. A piercing device is placed on the fixture (15), and a nut is fitted on the piercing device. The material support assembly (18) includes several cam bearing followers (186). The pressing cylinder (394) drives the nut mounting block (395) to move down, and the part of the piercing device with the nut protruding from the top enters the pressing hole (3954). The nut mounting block (395) squeezes the nut on the piercing device. When squeezing, the bottom of the fixture (15) contacts the cam bearing follower (186). The fixture (15) includes an upper fixture block (151) and a lower fixture block (152). The upper fixture block (151) is located on top of the lower fixture block (152). The upper fixture block (151) has a plurality of puncture holes (1512). The puncture device is located in the puncture hole (1512). The bottom of the puncture device is in contact with the top of the lower fixture block (152). The lower fixture block (152) has a second guide post hole (1522) and a fourth guide post hole (1524). A second guide post (154) and an oil-free bushing (155) are provided in the second guide post hole (1522) and the fourth guide post hole (1524). The oil-free bushing (155) is sleeved on the second guide post hole. Outside the column (154), a third limiting ring (1527) is formed on the top of the second guide post hole (1522) and the fourth guide post hole (1524). The top of the oil-free bushing (155) abuts against the third limiting ring (1527). A support top plate (158) is provided below the lower fixture block (152). The bottom of the second guide post (154) is fixed on the support top plate (158). A fixture gasket (156) is provided at the bottom of the oil-free bushing (155). A support spring (157) is sleeved on the bottom of the second guide post (154). One end of the support spring (157) abuts against the fixture gasket (156), and the other end abuts against the support top plate (158).

2. The nut mounting mechanism of the automatic dripping bucket assembly machine according to claim 1, characterized in that... The nut mounting block (395) includes a cylindrical fixing part (3951) and a cylindrical pressing part (3952). The fixing part (3951) has a pressing block mounting hole (3953). The wall of the pressing block mounting hole (3953) is threaded. The piston rod of the pressing cylinder (394) is threadedly installed to the fixing part (3951) through a coupling. The pressing hole (3954) is located in the pressing part (3952) and communicates with the pressing block mounting hole (3953). The diameter of the fixing part (3951) is larger than the diameter of the pressing part (3952), and the diameter of the pressing hole (3954) is larger than the diameter of the pressing block mounting hole (3953).

3. The nut mounting mechanism of the automatic dripping bucket assembly machine according to claim 1, characterized in that... It also includes a pressure sensor fixing plate (3916), on the bottom of which a pressure sensor (396) is fixed, and on the top of which a reset sensor (3918) is fixed. A pressure sensing plate (397) is also connected to the piston rod of the pressure cylinder (394). The pressure sensing plate (397) is driven up and down by the pressure cylinder (394). Both the pressure sensor (396) and the reset sensor (3918) are responsible for sensing the pressure sensing plate (397).

4. The nut mounting mechanism of the automatic dripping bucket assembly machine according to claim 3, characterized in that... It also includes a nut mounting base plate (391) and a lower pressure base (3914). A pressure back plate (393) is fixed on the nut mounting base plate (391). A second pressure reinforcing rib (3911) is fixed between the pressure back plate (393) and the nut mounting base plate (391). A pressure column (3913) is fixed on the lower pressure base (3914). An upper pressure base (3912) is fixed on the pressure column (3913). The pressure back plate (393) A pressure plate (392) is installed between the top of the upper pressure base (3912) and the top of the upper pressure base (3912). The pressure cylinder (394) is installed on the pressure plate (392). A first pressure reinforcing rib (3910) is fixed between the pressure plate (392) and the pressure back plate (393). A pressure connecting block (3915) is fixed on the pressure column (3913). The pressure sensor fixing plate (3916) is fixed on one side of the pressure connecting block (3915).

5. The nut mounting mechanism of the automatic dripping bucket assembly machine according to claim 1, characterized in that... The lower jig block (152) is also provided with a first guide post hole (1521), a third guide post hole (1523) and a fifth guide post hole (1525). The second guide post hole (1522) is located between the first guide post hole (1521) and the third guide post hole (1523). The fourth guide post hole (1524) is located between the third guide post hole (1523) and the fifth guide post hole (1525). A first guide post (1509) is provided in the first guide post hole (1521), the third guide post hole (1523) and the fifth guide post hole (1525). The bottom of the first guide post (1509) is fixed on the supporting top plate (158).

6. The nut mounting mechanism of the automatic dripping bucket assembly machine according to claim 1, characterized in that... The top of the lower jig block (152) is also provided with more than one first protrusion (1528), and a groove (1529) is formed between two adjacent first protrusions (1528). The side of the upper jig block (151) is provided with a second protrusion (1511) that corresponds one-to-one with the groove (1529). The second protrusion (1511) is located in the groove (1529).

7. The nut mounting mechanism of the automatic dripping bucket assembly machine according to claim 1, characterized in that... The material support assembly (18) includes a material support base plate (181), a material support plate (182) is installed on the material support base plate (181), a bearing fixing plate (184) is installed on the material support plate (182), a cam bearing follower (186) is installed on the bearing fixing plate (184), and when the nut mounting pressure block (395) presses the nut on the puncture device, the bottom of the support top plate (158) contacts the cam bearing follower (186).

8. The nut mounting mechanism of the automatic dripping bucket assembly machine according to claim 7, characterized in that... The bearing fixing plate (184) has several vertically arranged elongated material support fixing holes (1841). Screws pass through the material support fixing holes (1841) and install the bearing fixing plate (184) on the material support plate (182). The material support plate (182) is also equipped with a material support block (185). The material support block (185) is located at the bottom of the bearing fixing plate (184). A material support reinforcing plate (183) is installed between the material support plate (182) and the material support base plate (181).

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