An electromagnetic valve O-ring automatic assembly machine

Abstract

The application relates to an electromagnetic valve O-ring automatic assembling machine, and belongs to the technical field of electromagnetic valve assembling. The machine comprises a rack, a horizontal movement driving element is arranged on the rack, the output end of the horizontal movement driving element is connected with a first lifting driving element, the output end of the first lifting driving element is connected with a main mounting base, and a multi-claw cylinder is arranged on the main mounting base. The machine further comprises a scraper and a second lifting driving element, the second lifting driving element is arranged on the main mounting base and can drive the scraper to make lifting movement relative to the multi-claw cylinder, the scraper is provided with avoiding grooves through which claws of the multi-claw cylinder can pass and through which the claws can avoid tension movement, the number of the avoiding grooves corresponds to the number of the claws of the multi-claw cylinder, and an inward protruding part is formed between two adjacent avoiding grooves. The application is suitable for electromagnetic valve products of different models and structures, realizes direct clawing of the O-ring and precise installation in one step, simplifies the assembling steps and improves the production rhythm.

Description

Technical Field

[0001] This application relates to the field of solenoid valve assembly, and in particular to an automatic assembly machine for solenoid valve O-rings. Background Technology

[0002] As a key actuator in industrial automation control systems, the sealing performance of solenoid valves directly determines the reliability and stability of the system. The O-ring, as the core sealing medium, is crucial to the quality of its assembly. Traditional manual assembly methods are inefficient, labor-intensive, and prone to causing O-ring deformation or installation misalignment due to improper operation, thus leading to leakage risks.

[0003] To improve automation levels, existing technologies have proposed various assembly schemes. Chinese patent CN217702173U discloses an O-ring assembly mechanism for a solenoid valve. This mechanism uses a vibratory feeder for sorting, a straight guide rail for feeding, and a four-jaw cylinder to grip the O-rings. The core assembly logic of this technical solution is as follows: First, the gripped O-rings are transferred and placed into a cylindrical fixture, at which point the O-rings have returned to their natural state. Then, the solenoid valve body is clamped, allowing it to pass through the O-rings in the fixture from top to bottom and insert into the fixture's inner hole. This solution relies on the solenoid valve body's specific design as a tapered structure that is narrower at the bottom and wider at the top, allowing it to expand again and engage with a pre-set annular groove when passing through the O-rings.

[0004] However, this type of solution has significant limitations. First, its applicability is poor, heavily relying on the conical structure of the solenoid valve body itself for assembly. Second, its process is complex, requiring the O-ring to be positioned in an intermediate fixture before the solenoid valve body is inserted. The entire assembly process involves numerous steps and is not a direct, efficient, one-step operation, thus hindering further improvements in production cycle time. Summary of the Invention

[0005] To improve adaptability and assembly efficiency, this application provides an automatic assembly machine for solenoid valve O-rings.

[0006] This application provides an automatic assembly machine for solenoid valve O-rings, which adopts the following technical solution:

[0007] An automatic assembly machine for solenoid valve O-rings includes a frame with a transverse drive component on the frame. The output end of the transverse drive component is connected to a first lifting drive component, and the output end of the first lifting drive component is connected to a main mounting base. A multi-claw cylinder is mounted on the main mounting base. The machine also includes a scraper and a second lifting drive component. The second lifting drive component is mounted on the main mounting base and can drive the scraper to move up and down relative to the multi-claw cylinder. The scraper has clearance slots, the number of which corresponds to the number of claws in the multi-claw cylinder, and an inwardly protruding part is formed between two adjacent clearance slots.

[0008] Optionally, the lower end of the claw of the multi-claw cylinder is provided with a guide slope, and the guide slope is gradually tapered from top to bottom.

[0009] Optionally, it also includes an O-ring positioning mold and a lifting positioning platform. The lifting positioning platform is slidably disposed in the O-ring positioning mold. The lifting positioning platform is connected to a second lifting drive component. The lifting positioning platform is provided with a lateral opening groove through which the claw of the multi-claw cylinder can pass.

[0010] Optionally, the top side of the O-ring positioning mold is provided with a feeding groove, and the side of the O-ring positioning mold near the feeding groove is provided with an O-ring feeding device. The outlet end of the feeding groove is vertically aligned with the platform of the lifting positioning table. When the lifting positioning table is in the lower limit position, its top height is not higher than the bottom wall of the feeding groove.

[0011] Optionally, the lifting and positioning platform is provided with a positioning barrier for surrounding the O-ring. The lateral opening slot is provided through the positioning barrier 52. The end of the positioning barrier near the O-ring feeding device is provided with a break that allows the O-ring to pass through. The lifting and positioning platform is also provided with a movable baffle, which is located at the break. The lifting and positioning platform is provided with a retraction groove. The movable baffle is slidably and vertically disposed in the retraction groove. The movable baffle is connected to a baffle driving mechanism.

[0012] Optionally, the baffle drive mechanism includes a reel, a pull rope, and a return spring. The reel is rotatably disposed at the bottom of the lifting and positioning platform. One end of the pull rope is wound around the reel, and the other end is connected to the movable baffle. The return spring is disposed between the bottom wall of the retraction groove and the movable baffle. The reel is connected to a rotation drive assembly.

[0013] Optionally, the rotation drive assembly includes a transmission gear and a transmission rack. The transmission gear is coaxially fixed with the reel, and the transmission rack is vertically mounted on the O-ring positioning mold. The meshing configuration of the transmission rack and the transmission gear is as follows: when the lifting positioning platform begins to descend from the upper limit position, the transmission rack is located below the transmission gear and disengages from the transmission gear; when the lifting positioning platform descends to the intermediate predetermined position, the transmission rack engages with the transmission gear, thereby driving the reel to wind up the pull rope; when the lifting positioning platform begins to rise from the lower limit position, the transmission rack remains engaged with the transmission gear, driving the reel to unwind the pull rope; when the lifting positioning platform rises to the intermediate predetermined position, the transmission rack disengages from the transmission gear.

[0014] Optionally, the O-ring positioning mold is provided with a rack mounting groove, the transmission rack is movably disposed in the rack mounting groove, and an elastic strip is provided between the back of the transmission rack and the bottom wall of the rack mounting groove, so that the transmission rack can float relative to the rack mounting groove.

[0015] Optionally, the top of the movable baffle near the O-ring feeding device is provided with a first guide surface extending to the other side of the movable baffle, and the top of the lifting positioning platform near the O-ring feeding device is provided with a second guide surface extending to the edge of the retraction groove opening.

[0016] Optionally, the O-ring positioning mold is provided with a sensing groove and a sensor, and the detection end of the sensor is set opposite one end of the sensing groove; the projection of the sensing groove on the horizontal plane falls at least partially into the projection of the lifting positioning platform, and the projection of the sensing groove on the horizontal plane overlaps with the projection of at least two lateral opening grooves on the horizontal plane.

[0017] In summary, this application includes at least one of the following beneficial technical effects:

[0018] 1. By setting up a scraper independently controlled by a second lifting drive component, along with its corresponding clearance slots and inner protrusions, and working in conjunction with a multi-claw cylinder, direct gripping and precise one-step installation of O-rings are achieved. After the O-ring is gripped by the multi-claw cylinder's grippers, the scraper actively scrapes it off, directly placing the O-ring onto the positioned solenoid valve body. This avoids the complex process of first placing the O-ring into an intermediate fixture and then gripping the solenoid valve body to insert it, as in existing technologies. This simplifies the assembly process and increases production cycle time. Furthermore, since the installation process does not depend on the specific geometry of the solenoid valve body itself, the versatility of the assembly machine is improved, enabling it to adapt to different models and structures of solenoid valve products.

[0019] 2. By setting up positioning barriers and movable baffles, a semi-enclosed receiving space is constructed. The positioning barriers confine the O-rings within a predetermined area, while the break point facilitates the entry of the O-rings from the feed chute. The movable baffles act as temporary obstructions at the break point. Together with the positioning barriers, they ensure that the O-rings do not shift to the break point due to inertia or vibration during the lifting and positioning platform's ascent. This guarantees the stability and alignment of the O-rings on the lifting and positioning platform, facilitating precise gripping by the multi-claw cylinder.

[0020] 3. By configuring the meshing relationship between the transmission gear and the transmission rack to occur only at a predetermined position in the middle of the lifting and positioning platform's stroke, precise mechanical linkage between the opening and closing action of the movable baffle and the lifting and positioning platform's lifting and positioning movement is achieved: When the lifting and positioning platform descends from the upper limit position to the predetermined middle position, the transmission rack begins to mesh with the transmission gear, driving the reel to rotate and winding the pull rope, causing the movable baffle to gradually descend, opening the break in the positioning barrier; when the lifting and positioning platform continues to descend to the lower limit position, the movable baffle completely retracts into the retraction groove, and the break is completely open, thus facilitating the O-ring to smoothly enter the area defined by the positioning barrier from the feeding groove. As the lifting and positioning platform rises from its lower limit position, the transmission rack and gear remain engaged, but the direction of movement reverses, driving the reel to unwind the pull rope. The movable baffle gradually rises under the action of the return spring. When the lifting and positioning platform reaches the predetermined intermediate position, the movable baffle reaches its maximum extension height, re-closing the break point to prepare for material reception. Simultaneously, the transmission gear disengages from the transmission rack, preventing the transmission gear from continuing to rotate and causing pull rope malfunction or inaccurate movement of the movable baffle as the lifting and positioning platform continues to rise. This ensures that the opening and closing of the movable baffle is fully automatically matched with the rhythm of O-ring reception, gripping, and assembly, improving automation and work continuity. Furthermore, the transmission gear and rack configuration allows the movement of the movable baffle to be indirectly driven by the movement of the lifting and positioning platform itself, eliminating the need for a separate power source and control module for the movable baffle, thus simplifying the overall structure and reducing manufacturing costs. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of an automatic assembly machine for solenoid valve O-rings according to an embodiment of this application.

[0022] Figure 2 This is a schematic diagram illustrating the structure of the main mounting base in the embodiments of this application.

[0023] Figure 3 This is a structural schematic diagram illustrating the positional relationship between the multi-claw cylinder and the scraper in the embodiments of this application.

[0024] Figure 4 This is a schematic diagram illustrating the structure of the O-ring positioning base in the embodiments of this application.

[0025] Figure 5 This is a schematic diagram illustrating the structure of the lifting and positioning platform in the embodiments of this application.

[0026] Figure 6 This is a cross-sectional view illustrating the baffle drive mechanism in the embodiments of this application.

[0027] Figure 7 This is a cross-sectional view illustrating the rotation drive assembly in the embodiments of this application.

[0028] Figure 8This is a cross-sectional view illustrating the transmission rack and elastic strip in the embodiments of this application.

[0029] Figure 9 This is a schematic diagram illustrating the structure of the scraper in the embodiments of this application.

[0030] Explanation of reference numerals in the attached drawings: 1. Frame; 11. Lateral movement drive component; 12. First lifting drive component; 13. Main mounting base; 14. Multi-jaw cylinder; 141. Guide slope; 15. Scraper; 151. Clearance slot; 152. Inner protrusion; 16. Second lifting drive component; 2. O-ring positioning base; 21. Third lifting drive component; 3. Solenoid valve positioning fixture; 4. O-ring positioning mold; 41. Feed groove; 42. Rack mounting groove; 43. 44. Elastic strip; 45. Sensing groove; 5. Sensor; 5. Lifting and positioning platform; 51. Lateral opening groove; 52. Positioning enclosure; 521. Break; 53. Movable baffle; 531. First guide surface; 54. Retraction groove; 55. Second guide surface; 6. O-ring feeding device; 7. Baffle drive mechanism; 71. Reel; 72. Pull rope; 73. Return spring; 74. Rotation drive assembly; 741. Transmission gear; 742. Transmission rack. Detailed Implementation

[0031] The following combination Figures 1-9 This application will be described in further detail below.

[0032] Example:

[0033] This application discloses an automatic assembly machine for solenoid valve O-rings. (Refer to...) Figure 1 and Figure 2 An automatic assembly machine for solenoid valve O-rings includes a frame 1, an O-ring positioning base 2, and a solenoid valve positioning fixture 3. A transverse drive 11 is mounted on the frame 1. The output end of the transverse drive 11 is connected to a first lifting drive 12. The output end of the first lifting drive 12 is connected to a main mounting base 13. A multi-jaw cylinder 14 is mounted on the main mounting base 13. In this embodiment, the transverse drive 11 is a transverse cylinder, the lifting drive is a lifting cylinder, and the multi-jaw cylinder 14 is a four-jaw cylinder.

[0034] Reference Figure 3 The lower end of the claw of the multi-claw cylinder 14 is provided with a guide slope 141, and the guide slope 141 is gradually tapered from top to bottom. In this way, when gripping the O-ring, the guide slope 141 can guide the claw to smoothly insert into the inner hole of the O-ring, reducing the difficulty of alignment and thus ensuring stable gripping.

[0035] Reference Figures 3-5The O-ring positioning base 2 is provided with an O-ring positioning mold 4 and a lifting positioning platform 5. The O-ring positioning mold 4 is detachably fixed to the O-ring positioning base 2. The lifting positioning platform 5 is slidably disposed in the O-ring positioning mold 4. The O-ring positioning base 2 is also equipped with a third lifting drive component 21. The third lifting drive component 21 is vertically disposed and its output end is connected to the bottom end of the lifting positioning platform 5. The lifting positioning platform 5 is provided with a lateral opening slot 51 through which the claw of the multi-claw cylinder 14 can pass. The number of lateral opening slots 51 corresponds to the number of claws of the multi-claw cylinder 14. In this way, it can be ensured that when the claw of the multi-claw cylinder 14 descends to grasp the O-ring, the guide ramp 141 at its lower end can completely pass through and be below the platform of the lifting and positioning table 5; subsequently, when the O-ring is stretched and tightened, since the guide ramp 141 is completely below the platform, the stretched O-ring can still be maintained by the claw of the multi-claw cylinder 14 after it is freed from the constraint of the platform, and will not shrink and recover due to the loss of the lower support.

[0036] Reference Figure 1 and Figure 4 The O-ring positioning mold 4 has a feed groove 41 on one side of its top, and an O-ring feeding device 6 is provided on the side of the O-ring positioning mold 4 near the feed groove 41. To ensure that the O-rings conveyed by the O-ring feeding device 6 can be reliably delivered to the platform of the lifting positioning table 5, the outlet end of the feed groove 41 is vertically aligned with the platform of the lifting positioning table 5. When the lifting positioning table 5 is in its lower limit position, the top height of the table is not higher than the bottom wall of the feed groove 41, so as to ensure a smooth feeding process. In this embodiment, the O-ring feeding device 6 is a feeding guide rail with a vibrating plate.

[0037] Reference Figure 5 and Figure 6 A positioning barrier 52 for surrounding the O-ring is fixed on the platform of the lifting and positioning platform 5. A lateral opening slot 51 is provided through the positioning barrier 52. The end of the positioning barrier 52 near the O-ring feeding device 6 has a cut 521 for the O-ring to pass through. The lifting and positioning platform 5 is also provided with a movable baffle 53, which is located at the cut 521. A retraction groove 54 is provided on the platform of the lifting and positioning platform 5. The movable baffle 53 is slidably and vertically disposed in the retraction groove 54. The movable baffle 53 is connected to a baffle drive mechanism 7. By setting the positioning barrier 52 and the movable baffle 53, a semi-enclosed accommodating space is constructed. The positioning barrier 52 can confine the O-ring within a predetermined area, while the break 521 facilitates the entry of the O-ring from the feed chute 41. The movable baffle 53 acts as a temporary block at the break 521. Together with the positioning barrier 52, it ensures that the O-ring will not shift to the break 521 due to inertia or vibration during the lifting and positioning platform 5's ascent. This ensures the positional stability and alignment of the O-ring on the lifting and positioning platform 5, which is beneficial for the multi-claw cylinder 14 to achieve precise gripping.

[0038] Reference Figure 5 and Figure 6 The baffle drive mechanism 7 includes a roller 71, a pull rope 72, and a return spring 73. The roller 71 is rotatably disposed at the bottom of the lifting and positioning platform 5. One end of the pull rope 72 is wound around the roller 71, and the other end is connected to the movable baffle 53. The return spring 73 is disposed between the bottom wall of the retraction groove 54 and the movable baffle 53. The roller 71 is connected to a rotation drive assembly 74.

[0039] Reference Figures 5-7 The rotation drive assembly 74 includes a transmission gear 741 and a transmission rack 742. The transmission gear 741 is coaxially fixed with the winding shaft 71, and the transmission rack 742 is vertically mounted on the O-ring positioning mold 4. The meshing configuration of the transmission rack 742 and the transmission gear 741 is as follows: when the lifting positioning platform 5 starts to sink from the upper limit position, the transmission rack 742 is located below the transmission gear 741 and disengages from the transmission gear 741; when the lifting positioning platform 5 sinks to the intermediate predetermined position, the transmission rack 742 and the transmission gear 741 begin to mesh, thereby driving the winding shaft 71 to wind up the pull rope 72; when the lifting positioning platform 5 starts to rise from the lower limit position, the transmission rack 742 and the transmission gear 741 remain meshed, driving the winding shaft 71 to unwind the pull rope 72; when the lifting positioning platform 5 rises to the intermediate predetermined position, the transmission rack 742 disengages from the transmission gear 741.

[0040] When the lifting and positioning platform 5 descends from the upper limit position to the middle predetermined position, the transmission rack 742 begins to mesh with the transmission gear 741, driving the reel 71 to rotate and winding the pull rope 72, causing the movable baffle 53 to gradually descend, allowing the break 521 of the positioning barrier 52 to be cleared; when the lifting and positioning platform 5 continues to descend to the lower limit position, the movable baffle 53 is completely retracted into the retraction groove 54, and the break 521 is completely open, thus facilitating the O-ring to smoothly enter the area defined by the positioning barrier 52 from the feed groove 41. When the lifting and positioning platform 5 begins to rise from its lower limit position, the transmission rack 742 and transmission gear 741 remain engaged, but the direction of movement is reversed. The drive shaft 71 unwinds the pull rope 72, and the movable baffle 53 gradually rises under the action of the return spring 73. When the lifting and positioning platform 5 rises to the intermediate predetermined position, the movable baffle 53 reaches its maximum extension height, re-closing the break 521 to prepare for receiving materials. At the same time, the transmission gear 741 disengages from the transmission rack 742, preventing the transmission gear 741 from continuing to rotate as the lifting and positioning platform 5 continues to rise, which could cause the pull rope 72 to become disordered or the movable baffle 53 to malfunction. This ensures that the opening and closing of the movable baffle 53 is fully automatically matched with the rhythm of receiving, gripping, and assembling the O-rings, improving the degree of automation and work continuity. Furthermore, through the arrangement of the transmission gear 741 and the transmission rack 742, the movement of the movable baffle 53 can be indirectly driven by the movement of the lifting positioning platform 5 itself, without the need to set up a separate power source and control module for the movable baffle 53, which helps to simplify the overall structure and reduce manufacturing costs.

[0041] Reference Figure 8 The O-ring positioning mold 4 has a rack mounting groove 42. The transmission rack 742 is movably set in the rack mounting groove 42. An elastic strip 43 is provided between the back of the transmission rack 742 and the bottom wall of the rack mounting groove 42, allowing the transmission rack 742 to float relative to the rack mounting groove 42. By setting the floating transmission rack 742, the fault tolerance and reliability of the gear and rack meshing are enhanced. The buffer provided by the elastic strip 43 allows the rack to produce a small displacement when it contacts the gear, ensuring that even with certain installation errors or movement deviations, the gear and rack can smoothly enter the meshing state, avoiding jamming, wear, or damage caused by hard contact, and ensuring the long-term stability and lifespan of the rotation drive assembly 74.

[0042] Reference Figure 1 and Figure 6The movable baffle 53 has a first guide surface 531 extending to the other side of the movable baffle 53 at its top end near the O-ring feeding device 6, and the lifting positioning platform 5 has a second guide surface 55 extending to the edge of the opening of the retraction groove 54 at its top end near the O-ring feeding device 6. By setting the first guide surface 531 and the second guide surface 55, when the lifting positioning platform 5 rises, it can guide the subsequent adjacent O-rings in the O-ring feeding device 6 to move backward in an orderly manner by a certain distance, preventing the next O-ring from being lifted up because part of it rests on the edge of the raised lifting positioning platform 5 after the current O-ring is removed, thus ensuring the continuous unobstructed flow of the feeding channel and the stability of the feeding sequence.

[0043] Reference Figure 4 and Figure 6 The O-ring positioning mold 4 is equipped with a sensing groove 44 and a sensor 45. The detection end of the sensor 45 is positioned directly opposite one end of the sensing groove 44. The projection of the sensing groove 44 on the horizontal plane at least partially falls within the projection of the lifting positioning platform 5, and the projection of the sensing groove 44 on the horizontal plane overlaps with the projections of at least two lateral opening grooves 51 on the horizontal plane. This ensures that the detection beam of the sensor 45 can pass through the aforementioned structural gaps without obstruction, accurately detecting whether the O-ring on the lifting positioning platform 5 is in position, providing reliable signal feedback for the subsequent O-ring grasping action.

[0044] Reference Figure 3 and Figure 9 The assembly machine also includes a scraper 15 and a second lifting drive 16. The second lifting drive 16 is mounted on the main mounting base 13 and can drive the scraper 15 to move up and down relative to the multi-claw cylinder 14. The scraper 15 is provided with clearance slots 151, which are used to allow the claws of the multi-claw cylinder 14 to pass through and perform tensioning movements. The number of clearance slots 151 corresponds to the number of claws of the multi-claw cylinder 14, and an inwardly protruding inner protrusion 152 is formed between two adjacent clearance slots 151.

[0045] After the O-ring is gripped by the gripper of the multi-jaw cylinder 14, the scraper 15 can actively scrape it off, directly fitting the O-ring onto the positioned solenoid valve body. This achieves direct gripping and precise installation of the O-ring in one step, avoiding the complex process of first placing the O-ring into the intermediate fixture and then gripping the solenoid valve body to insert it, as in the prior art. This simplifies the assembly steps and improves the production cycle. In addition, since the installation process does not depend on the specific geometry of the solenoid valve body itself, it improves the versatility of the assembly machine and can adapt to solenoid valve products of different models and structures.

[0046] Reference Figure 3It is worth noting that during assembly, the guide slope 141 on the claw of the multi-claw cylinder 14 provides a smooth and gradual guide path for the O-ring to detach and retract, allowing it to retract smoothly and lock into the preset annular groove of the solenoid valve body. This effectively avoids jumping or positional displacement caused by instantaneous elastic recovery, and improves the success rate and accuracy of installation.

[0047] The implementation principle of the automatic assembly machine for solenoid valve O-rings in this application embodiment is as follows: First, the O-ring feeding device 6 conveys the O-rings through the feeding chute 41 to the platform of the lifting and positioning table 5, where the lifting and positioning table 5 receives the O-rings. Next, the lifting and positioning table 5 begins to rise. During the rising process, the reel 71 unwinds the pull rope 72, and the movable baffle 53 gradually rises under the action of the return spring 73, finally closing the break 521 to prevent the O-rings from shifting or falling before being picked up.

[0048] Subsequently, the first lifting drive 12 drives the main mounting base 13 to descend, causing the claw of the multi-claw cylinder 14 to pass through the lateral opening slot 51 on the lifting positioning platform 5. The guide slope 141 at the lower end of the claw guides it to insert into the inner hole of the O-ring. The multi-claw cylinder 14 actuates to open the claw, evenly spreading and tightening the O-ring. After the gripping is completed, the first lifting drive 12 drives the main mounting base 13 to rise, causing the multi-claw cylinder 14 to completely detach from the platform of the lifting positioning platform 5.

[0049] Then, the lifting and positioning platform 5 begins to descend to its lower limit position and reset, preparing for the next material receiving. During the descent of the lifting and positioning platform 5, when it reaches the intermediate predetermined position, the reel 71 winds up the pull rope 72, and the movable baffle 53 gradually descends and retracts, reopening the break 521 to allow the subsequent O-ring to enter. At the same time, the lateral drive 11 moves the multi-jaw cylinder 14 laterally to directly above the solenoid valve positioning fixture 3.

[0050] During assembly, the first lifting drive 12 drives the main mounting base 13 to descend, allowing the top of the solenoid valve body to pass through the gap between the claws of the multi-claw cylinder 14. The descent stops when the guide ramp 141 at the lower end of the claw reaches the preset annular groove on the solenoid valve body. At this point, the second lifting drive 16 actuates, pushing the scraper 15 downward. The inner protrusion 152 on the scraper 15 contacts and is blocked by the O-ring, generating a downward scraping force that scrapes the O-ring off the claw. The O-ring retracts and returns to its original position along the guide ramp 141, precisely locking into the preset annular groove of the solenoid valve body.

[0051] Finally, the scraper 15 and the main mounting base 13 rise and reset, and the lateral drive 11 moves the gripping mechanism back to its initial position. The lifting positioning table 5 receives the next O-ring at the lower limit position and begins a new cycle, realizing continuous automated assembly.

[0052] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An automatic assembly machine for solenoid valve O-rings, comprising a frame (1), wherein a transverse drive (11) is provided on the frame (1), the output end of the transverse drive (11) is connected to a first lifting drive (12), the output end of the first lifting drive (12) is connected to a main mounting base (13), and a multi-jaw cylinder (14) is provided on the main mounting base (13); characterized in that: It also includes a scraper (15) and a second lifting drive (16). The second lifting drive (16) is mounted on the main mounting base (13) and can drive the scraper (15) to move up and down relative to the multi-claw cylinder (14). The scraper (15) is provided with clearance slots (151). The number of clearance slots (151) corresponds to the number of claws of the multi-claw cylinder (14), and an inwardly protruding inner protrusion (152) is formed between two adjacent clearance slots (151). It also includes an O-ring positioning mold (4) and a lifting positioning platform (5). The lifting positioning platform (5) is slidably mounted in the O-ring positioning mold (4). The lifting positioning platform (5) is connected to a second lifting drive component (16). The lifting positioning platform (5) is provided with a side opening slot (51) through which the claw of the multi-claw cylinder (14) can pass. The top side of the O-ring positioning mold (4) is provided with a feeding groove (41). The side of the O-ring positioning mold (4) near the feeding groove (41) is provided with an O-ring feeding device (6). The outlet end of the feeding groove (41) is vertically aligned with the table surface of the lifting positioning platform (5). When the lifting positioning platform (5) is in the lower limit position, its top height is not higher than the bottom wall of the feeding groove (41). The lifting and positioning platform (5) has a positioning barrier (52) for surrounding the O-ring on its surface. The lateral opening slot (51) passes through the positioning barrier (52). The positioning barrier (52) has a cut (521) at one end near the O-ring feeding device (6) for the O-ring to pass through. The lifting and positioning platform (5) also has a movable baffle (53) located at the cut (521). The lifting and positioning platform (5) has a retraction groove (54) on its surface. The movable baffle (53) can slide vertically. The movable baffle (53) is connected to a baffle drive mechanism (7) and placed in the retraction groove (54). The baffle drive mechanism (7) includes a reel (71), a pull rope (72) and a return spring (73). The reel (71) is rotatably disposed at the bottom of the lifting positioning platform (5). One end of the pull rope (72) is wound around the reel (71) and the other end is connected to the movable baffle (53). The return spring (73) is disposed between the bottom wall of the recycling groove and the movable baffle (53). The reel (71) is connected to a rotation drive assembly (74).

2. The automatic assembly machine for solenoid valve O-rings according to claim 1, characterized in that: The lower end of the claw of the multi-claw cylinder (14) is provided with a guide slope (141), and the guide slope (141) is gradually tapered from top to bottom.

3. The automatic assembly machine for solenoid valve O-rings according to claim 1, characterized in that: The rotation drive assembly (74) includes a transmission gear (741) and a transmission rack (742). The transmission gear (741) is coaxially fixed with the roller (71), and the transmission rack (742) is vertically mounted on the O-ring positioning mold (4). The meshing configuration of the transmission rack (742) and the transmission gear (741) is as follows: when the lifting positioning platform (5) begins to sink from the upper limit position, the transmission rack (742) is located below the transmission gear (741) and disengaged from the transmission gear (741); when the lifting positioning platform... (5) When the platform sinks to the intermediate predetermined position, the transmission rack (742) and the transmission gear (741) begin to mesh, thereby driving the reel (71) to wind up the traction rope (72); when the lifting positioning platform (5) starts to rise from the lower limit position, the transmission rack (742) and the transmission gear (741) remain meshed, driving the reel (71) to unwind the traction rope (72); when the lifting positioning platform (5) rises to the intermediate predetermined position, the transmission rack (742) and the transmission gear (741) disengage.

4. An automatic assembly machine for solenoid valve O-rings according to claim 3, characterized in that: The O-ring positioning mold (4) is provided with a rack mounting groove (42), and the transmission rack (742) is movably disposed in the rack mounting groove (42). An elastic strip (43) is provided between the back of the transmission rack (742) and the bottom wall of the rack mounting groove (42), so that the transmission rack (742) can float relative to the rack mounting groove (42).

5. An automatic assembly machine for solenoid valve O-rings according to claim 1, characterized in that: The movable baffle (53) has a first guide surface (531) extending to the other side of the movable baffle (53) at its top end near the O-ring feeding device (6), and the lifting positioning platform (5) has a second guide surface (55) extending to the edge of the opening of the retraction groove (54) at its top end near the O-ring feeding device (6).

6. The automatic assembly machine for solenoid valve O-rings according to claim 1, characterized in that: The O-ring positioning mold (4) is provided with a sensing groove (44) and a sensor (45). The detection end of the sensor (45) is set directly opposite one end of the sensing groove (44). The projection of the sensing groove (44) on the horizontal plane falls at least partially into the projection of the lifting positioning platform (5), and the projection of the sensing groove (44) on the horizontal plane overlaps with the projection of at least two lateral opening grooves (51) on the horizontal plane.

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