Locking plate automatic press-fitting device and method thereof

Abstract

The lock piece automatic press fitting device and method, the structure of the pressing head assembly is improved, and the air channel feeding and negative pressure positioning mode are adopted, so that the lock piece is always kept in a stable centering and positioning state, thereby effectively ensuring that the lock piece can be accurately clamped into the positioning groove during the vertical movement along the valve rod, and the production requirements of full-automatic press fitting operation qualification rate and efficiency and compatibility of multiple specifications of lock pieces are met. The pressing head has a hollow inner cavity, and the lock piece clamping jaw and the lock piece guide plate are coaxially sleeved from the outside to the inside along the vertical direction. The top end of the lock piece guide plate is connected with the spring guide pin through internal and external threads, and the lock piece guide plate is suspended in the hollow inner cavity of the pressing head along the vertical direction. The first spring is sleeved on the spring guide pin. The lock piece clamping jaw and the lock piece guide plate form two groups of vertical through channels. The lock piece clamping jaw is hinged to the pressing head, a group of parallel air claws are sleeved on the top end of the lock piece clamping jaw, and the parallel air claws are connected with the air claw joint and the external positive pressure gas source.

Description

Technical Field

[0001] This invention relates to an apparatus and method for the automatic pressing and assembly of engine cylinder head lock plates, belonging to the field of fuel-powered vehicle manufacturing. Background Technology

[0002] The design and manufacturing of engines are crucial components for the safety of fuel-powered motor vehicles. Existing press-fit equipment for engine cylinder head lock plates still requires manual placement and positioning of the lock plates, resulting in low press-fit efficiency and low product qualification rate. Furthermore, it has the technical defect of not being able to adapt to press-fit lock plates for valves at different angles.

[0003] The main problem with the existing technology is that the locking plate fails to maintain a stable alignment before the pressure head contacts the locking plate seat. During the process of the locking plate being inserted into the valve stem by the pressure head and moving vertically along it, it is easy for it to become skewed. As a result, after the pressure head rises, the locking plate is difficult to accurately engage in the positioning groove of the valve stem, which can easily lead to press-fit failure.

[0004] In view of the above, this patent application is hereby filed. Summary of the Invention

[0005] The automatic locking plate pressing device and method of the present invention address the problems existing in the prior art by proposing structural improvements to the pressing head assembly and adopting air passage feeding and negative pressure positioning methods to ensure that the locking plate always maintains a stable centering and positioning state. This effectively ensures that the locking plate can be accurately inserted into the positioning groove during the vertical movement along the valve stem, meeting the production requirements of fully automatic pressing operation qualification rate and efficiency, and compatibility with multiple specifications of locking plates.

[0006] To achieve the above design objectives, the automatic locking plate pressing device includes a mounting plate for fixedly connecting a pressing head. The pressing head has a hollow inner cavity, and its top is fixedly connected to a pressing head connecting seat. Within the hollow inner cavity of the pressing head, locking plate grippers and a locking plate guide plate are coaxially mounted vertically from the outside inwards. The top of the locking plate guide plate is connected to a spring guide pin via internal and external threads, and the locking plate guide plate is suspended vertically within the hollow inner cavity of the pressing head. A first spring is mounted on the spring guide pin. Two sets of vertically extending channels are formed between the locking plate grippers and the locking plate guide plate. The locking plate grippers are hinged to the pressing head, and a set of parallel pneumatic grippers is mounted on the outer periphery of the top of the locking plate grippers. The parallel pneumatic grippers are connected to a pneumatic gripper connector and an external positive pressure air source.

[0007] Furthermore, a recessed stop groove is provided at the bottom end of the pressure head, the shape and size of which match the outer contour of the top of the locking plate seat fitted on the top of the valve stem.

[0008] Furthermore, the pressure head connecting seat has two sets of symmetrically distributed slides that extend vertically and connect to the pressure head, and a set of central channels located at the axial center.

[0009] Furthermore, the diameter of the central channel is larger than the diameter of other parts, and the two ends of the first spring are respectively connected to the top of the central channel and the top of the locking plate guide plate.

[0010] Furthermore, a ring of outwardly protruding material-stopping shoulders is provided at the bottom edge of the locking plate guide plate.

[0011] Furthermore, a recessed positioning stop is provided at the bottom end of the locking plate guide plate, the shape and size of which match the outer contour of the top of the valve stem.

[0012] Furthermore, a vacuum channel is formed between the locking jaws and the hollow inner cavity of the pressure head, which is connected to the cylinder connector. This vacuum channel is connected to the channel.

[0013] Based on the technical improvements of the aforementioned automatic pressing device, this application also proposes the following automatic pressing method for locking plates:

[0014] As the pressure head descends vertically to contact the locking plate seat and continues to press down, the first spring is continuously compressed and deformed inside the center of the central channel. Consequently, the locking plate guide plate, under the action of the first spring, continuously presses the valve stem vertically downward. The locking plate is attracted by the locking plate claw and descends along the valve stem to below the stem groove. When the pressure head descends to the lowest point and then rises vertically back up, after the pressure head disengages from the locking plate seat, the locking plate rises vertically to the stem groove and enters the stem groove under its own elastic action.

[0015] Furthermore, the pressure head of the automatic locking plate pressing device has a hollow inner cavity, in which locking plate claws and locking plate guide plates are coaxially mounted from the outside to the inside along the vertical direction; the locking plate guide plate is suspended in the hollow inner cavity of the pressure head by a spring guide pin connected to the top end, and a first spring is mounted on the spring guide; two sets of vertically extending channels are formed between the locking plate claws and the locking plate guide plate, allowing the locking plate to descend vertically and pass through, and the locking plate reaches the bottom of the pressure head through these channels.

[0016] Furthermore, the automatic pressing method includes the following implementation steps:

[0017] 1) Locking plate enters;

[0018] The locking plate enters the internal slide of the pressure head connecting seat through the material channel, and then descends along the channel formed between the locking plate clamp and the locking plate guide plate to reach the bottom of the pressure head;

[0019] 2) Locking plate positioning

[0020] The cylinder connector creates a negative pressure environment within the vacuum channel, and the locking plate is attracted to one side of the locking plate clamp.

[0021] Driven by positive air pressure, the parallel gripper clamps the top of the locking plate gripper from the outside. The locking plate gripper rotates around the central axis with the perforated pin as the center axis. At the same time, the bottom of the locking plate gripper attracts the locking plate and opens radially.

[0022] 3) Press down the pressure head

[0023] The pressure head descends vertically, and during this process, the locking plate is always held in place by the vacuum on the locking plate gripper.

[0024] When the pressure head descends vertically and contacts the locking plate seat, the stop groove wraps around and locks the top outer edge of the locking plate seat from top to bottom, and the pressure head locks the locking plate seat in both the vertical and horizontal directions.

[0025] When the bottom end of the locking plate guide plate contacts the top end of the valve stem, the positioning stop wraps around and locks the outer edge of the top end of the valve stem, and the locking plate guide plate locks the valve stem in the vertical and horizontal directions.

[0026] 4) Locking plate pressing

[0027] As the pressure head descends to its lowest point, the parallel gripper releases the locking plate clamp, and the bottom end of the locking plate clamp absorbs the locking plate while retracting back to its original position, so that the locking plate is fitted onto the valve stem.

[0028] As the pressure head rises vertically, the locking plate guide plate remains pressed down on the valve stem under the action of the first spring 521. The locking plate is pushed upward into the rod groove by the valve spring, and the locking plate guide plate prevents the locking plate from continuing to rise along the valve stem.

[0029] Then, air is introduced into the vacuum channel, and the locking jaws release the locking plate;

[0030] Finally, the locking plate guide plate separates from the valve stem as the pressure head rises, and the pressure head rises to the safe position to complete the locking plate pressing process.

[0031] In summary, the automatic locking plate pressing device and method described above have the following advantages:

[0032] 1. This application proposes a fully automatic locking plate pressing device and process, which eliminates the need for manual assistance in placing and positioning the locking plates throughout the process, thereby improving the overall automation level and production efficiency of engine cylinder head manufacturing.

[0033] 2. This application adopts an air passage feeding and negative pressure positioning structure. The locking plate can always be in contact with the valve stem under the adsorption of the locking plate claw, and it always maintains the centering and positioning state during the vertical reciprocating movement along the valve stem, thus maximizing the accuracy of the locking plate being inserted into the valve stem positioning groove.

[0034] 3. The design of the positioning and fixing structure between the pressure head, the locking plate guide plate and the valve stem in this application effectively ensures the axial concentricity between the locking plate seat, the valve stem and the pressure head during the pressing process, and also ensures that the locking plate will not come off from the top of the valve stem, thereby improving the quality of the pressing operation. Attached Figure Description

[0035] The present invention will now be further described with reference to the following figures.

[0036] Figure 1 This is a cross-sectional structural schematic diagram of the automatic locking plate pressing device described in this application;

[0037] Figure 2 yes Figure 1 Enlarged schematic diagram of the central section (Part I);

[0038] Figure 3 This is a cross-sectional view of the pressure head locking the locking plate seat;

[0039] Figure 3-1 yes Figure 3 Enlarged schematic diagram of the middle section II structure;

[0040] Figure 4 This is a cross-sectional view of the pressure head after it has disengaged from the locking plate seat;

[0041] Figure 5 This is a schematic diagram of an engine cylinder head production equipment that uses the automatic locking plate pressing device as described in this application; Detailed Implementation

[0042] Example 1, such as Figure 5 As shown, the engine cylinder head production equipment using the automatic locking plate pressing device 100 described in this application includes a flipping component 300 that carries the locking plate seat assembly 200 and drives it to flip at different angles. During the process of the automatic locking plate pressing device 100 vertically aligning and descending to contact the locking plate seat assembly 200, followed by pressing down and rising, the two sets of locking plates respectively engage in the corresponding positioning grooves of the valve stem, thus completing the automatic locking plate pressing production process.

[0043] like Figures 1 to 4 As shown, the automatic locking plate pressing device 100 includes a mounting plate 501 that is fixedly connected to the pressing head 508 by bolts. The mounting plate 501 is connected to a drive assembly for driving the pressing head 508 to move vertically up and down to press the locking plate 503 onto the valve stem 601.

[0044] The slide 515, which is fixedly connected to the distribution plate 513 and the material channel 517, is slidably connected to the mounting plate 501 in the horizontal direction. The distribution plate 513 is provided with two sets of slots that connect to the internal slide of the pressure head connecting seat 523. When the slide 515 is displaced in the horizontal direction, the two sets of locking plates 503 conveyed from the material channel 517 can pass through the slots on the distribution plate 513 and the internal slide of the pressure head connecting seat 523 to reach the bottom of the pressure head 508.

[0045] The pressure head 508 has a hollow inner cavity, and the top of the pressure head 508 is fixedly connected to the pressure head connecting seat 523 by bolts 502; in the hollow inner cavity of the pressure head 508, locking plate claws 507 and locking plate guide plates 520 are coaxially sleeved from the outside to the inside along the vertical direction.

[0046] A recessed stop groove 508-1 is provided at the bottom end of the pressure head 508. The shape and size of the stop groove 508-1 match the outer contour of the top of the locking plate seat 603 fitted on the top of the valve stem 601. When the pressure head 508 descends vertically and contacts the locking plate seat 603, the stop groove 508-1 wraps around and locks the outer edge of the top of the locking plate seat 603 from top to bottom, thereby forming a tight and stable connection between the two. That is, the pressure head 508 locks the locking plate seat 603 in the vertical and horizontal directions. It also facilitates the mutual positioning between the locking plate guide plate 520 and the valve stem 601, and together ensures a relatively accurate concentricity among the above-mentioned components during the locking plate pressing process.

[0047] The pressure head connecting seat 523 has two sets of symmetrically distributed slides 523-1 that extend vertically and are connected at both ends to the material distribution plate 513 and the pressure head 508, respectively, and a set of central channels 523-2 located at the axial center.

[0048] The locking plate guide plate 520 has a spring guide pin 522 connected to its top end via internal and external threads; the top of the spring guide pin 522 has a T-shaped structure, which is pressed vertically against the outer port of the central channel 523-2; through this T-shaped structure, the locking plate guide plate 520 is suspended vertically in the hollow cavity of the pressure head 508; a first spring 521 is sleeved on the spring guide pin 522;

[0049] The diameter of the middle part 523-3 of the central channel 523-2 is larger than the diameter of other parts. The two ends of the first spring 521 are respectively connected to the top of the middle part 523-3 of the central channel 523-2 and the top of the locking plate guide plate 520. When the first spring 521 is compressed or stretched inside the middle part 523-3 of the central channel 523-2, the locking plate guide plate 520 can move up and down vertically in the hollow cavity of the pressure head 508.

[0050] A horizontally protruding retaining shoulder 520-1 is provided at the bottom edge of the locking plate guide plate 520. This retaining shoulder 520-1 can support the locking plate 503 upward to prevent it from falling off after descending to the bottom.

[0051] A recessed positioning stop 520-2 is provided at the bottom end of the locking plate guide plate 520. The shape and size of the positioning stop 520-2 match the outer contour of the top of the valve stem 601. When the pressure head 508 descends vertically to the lowest point, the bottom end of the locking plate guide plate 520 contacts the top of the valve stem 601. At this time, the positioning stop 520-2 wraps around and locks the outer edge of the top of the valve stem 601, thereby forming a tight and stable connection between the two.

[0052] The locking plate gripper 507 and the locking plate guide plate 520 form two sets of vertically extending channels 507-1. Through these channels 507-1, the locking plate 503 is allowed to descend vertically and has a limiting function for the locking plate 503 so that the locking plate 503 will not deflect or tilt during the vertical descent, thereby ensuring the subsequent pressing quality.

[0053] The locking jaw 507 is radially connected to the pressure head 508 via two sets of parallel perforated pins 509. A set of parallel pneumatic jaws 503 is sleeved on the outer periphery of the top of the locking jaw 507. The top of the locking jaw 507 has a cavity in which a set of second springs 703-3 are clamped. The parallel pneumatic jaws 503 are connected to the pneumatic jaw connector 503-1 and the external positive pressure air source. Under the drive of positive air pressure, the parallel pneumatic jaws 503 clamp the top of the locking jaw 507 from the outside. During this process, the second springs 703-3 are compressed, and the locking jaw 507 rotates around the perforated pins 509 as the central axis. The bottom of the locking jaw 507 opens radially at a certain angle, so that when the locking jaw guide plate 520 moves vertically up and down during the pressing of the locking jaw 503, it will not touch the locking jaw 503.

[0054] A vacuum channel 507-2 is formed between the locking jaw 507 and the hollow cavity of the pressure head 508, which is connected to the cylinder connector 504. This vacuum channel 507-2 is connected to the channel 507-1. When the locking piece 503 descends vertically to the bottom of the pressure head 508 and is supported by the stop shoulder 520-1, a negative pressure environment can be formed in the vacuum channel 507-2 by the cylinder connector 504. The locking piece 503 is adsorbed on one side of the locking jaw 507 under the action of vacuum adsorption.

[0055] Based on the structural design of the aforementioned automatic locking plate pressing device, this application proposes an improvement scheme for the following automatic locking plate pressing method:

[0056] The pressure head 508 of the automatic locking plate pressing device 100 has a hollow inner cavity in which locking plate clamps 507 and locking plate guide plates 520 are coaxially mounted from the outside to the inside along the vertical direction.

[0057] The locking plate guide plate 520 is suspended in the hollow cavity of the pressure head 508 by the spring guide pin 522 connected to the top end, and the first spring 521 is sleeved on the spring guide pin 522.

[0058] Two sets of vertically extending channels 507-1 are formed between the locking plate jaws 507 and the locking plate guide plate 520, allowing the locking plate 503 to descend vertically through them. The locking plate 503 reaches the bottom of the pressure head 508 through these channels 507-1.

[0059] The locking jaw 507 is hinged to the pressure head 508 by a horizontal pin. A set of parallel air jaws 503 connected to an external positive pressure air source are clamped on the outer periphery of the top of the locking jaw 507. A vacuum channel 507-2 is formed between the locking jaw 507 and the hollow inner cavity of the pressure head 508.

[0060] As the pressure head 508 descends vertically to contact the locking plate seat 603 and continues to press down, the first spring 521 is continuously compressed and deformed inside the middle part 523-3 of the central channel 523-2. Consequently, under the action of the first spring 521, the locking plate guide plate 520 always presses the valve stem 601 vertically downward. The locking plate 503 is attracted by the locking plate gripper 507 and descends along the valve stem 601 to below the stem groove 601-1.

[0061] As the pressure head 508 descends to its lowest point and rises vertically back up, after it disengages from the locking plate seat 603, the locking plate 503 rises vertically to the rod groove 601-1. Under its own elastic action, it enters the rod groove 601-1. At this time, the elastic potential energy of the first spring 521 in the middle part 523-3 of the central channel 523-2 has not been fully released. The locking plate guide plate 520 still presses down on the valve stem 601, preventing the locking plate 503 from continuing to rise along the valve stem 601. Therefore, the locking plate 503 cannot be dislodged from the rod groove 601-1. Under the adsorption of the locking plate gripper 507 and the downward blocking action of the locking plate guide plate 520, the locking plate 503 is accurately and stably positioned in the rod groove 601-1.

[0062] Based on the above control principle, the automatic locking plate pressing method described in this application includes the following implementation steps:

[0063] 1) Locking plate enters;

[0064] The locking piece 503 enters the internal slide of the pressure head connecting seat 523 through the slot of the material channel 517 via the material distribution plate 513 and the internal slide of the pressure head connecting seat 523, and then descends along the channel 507-1 formed between the locking piece clamp 507 and the locking piece guide plate 520 to reach the bottom of the pressure head 508.

[0065] The inner diameter and shape of the aforementioned channel 507-1 allow the locking plate 503 to descend vertically while effectively limiting its deflection or tilting, thereby ensuring that the locking plate 503 remains horizontal during continuous descent, which is beneficial to improving the accuracy of subsequent pressing operations.

[0066] Furthermore, a horizontally protruding retaining shoulder 520-1 is provided at the bottom edge of the locking plate guide plate 520. When the locking plate 503 descends to the bottom of the pressure head 508, the retaining shoulder 520-1 can support the locking plate 503 upward to prevent it from falling off.

[0067] 2) Locking plate positioning

[0068] The cylinder connector 504 creates a negative pressure environment within the vacuum channel 507-2, and the locking plate 503 is attracted to one side of the locking plate clamp 507.

[0069] Driven by positive air pressure, the parallel gripper 503 clamps the top of the locking plate gripper 507 from the outside. The locking plate gripper 507 rotates around the central axis of the pin with holes 509. At the same time, the bottom of the locking plate gripper 507 attracts the locking plate 503 and opens at a certain angle in the radial direction.

[0070] 3) Press down the pressure head

[0071] The pressure head 508 descends vertically, and during this process, the locking plate 503 is always vacuum-adhered to the locking plate gripper 507;

[0072] When the pressure head 508 descends vertically and contacts the locking plate seat 603, the stop groove 508-1 wraps around and locks the top outer edge of the locking plate seat 603 from top to bottom, and the pressure head 508 locks the locking plate seat 603 in both vertical and horizontal directions.

[0073] When the bottom end of the locking plate guide plate 520 contacts the top end of the valve stem 601, the positioning stop 520-2 wraps around and locks the outer edge of the top end of the valve stem 601, and the locking plate guide plate 520 locks the valve stem 601 in the vertical and horizontal directions.

[0074] 4) Locking plate pressing

[0075] When the pressure head 508 descends to its lowest point, the parallel gripper 503 releases the locking plate gripper 507. At the same time, the bottom end of the locking plate gripper 507 absorbs the locking plate 503 and retracts back to its original position. The locking plate 503 is then fitted onto the valve stem 601.

[0076] As the pressure head 508 rises vertically, the locking plate guide plate 520 remains pressed down on the valve stem 601 under the action of the first spring 521. The locking plate 503 is pushed upward into the stem groove 601-1 by the valve spring 602. The locking plate guide plate 520 prevents the locking plate 503 from continuing to rise along the valve stem 601, and the locking plate 503 cannot disengage from the stem groove 601-1.

[0077] Then, air is introduced into the vacuum channel 507-2, and the locking jaw 507 releases the locking piece 503;

[0078] Finally, the locking plate guide plate 520 rises along with the pressure head 508 and disengages from the valve stem 601. The pressure head 508 rises to the safe position to complete the locking plate pressing process.

[0079] As described above, the embodiments given in conjunction with the accompanying drawings are merely preferred solutions for achieving the objectives of this invention. Those skilled in the art can draw inspiration from this and directly derive other alternative structures that conform to the design concept of this invention. Other structural features derived therefrom should also fall within the scope of the solutions described in this invention.

Claims

1. An automatic locking plate pressing device, comprising a mounting plate for fixedly connecting a pressing head, wherein the pressing head has a hollow inner cavity, and the top of the pressing head is fixedly connected to a pressing head connecting seat, characterized in that: The mounting plate is connected to a drive assembly for driving the pressure head to move vertically up and down to press the locking plate onto the valve stem; the slide groove that is fixedly connected to the distribution plate and the material channel is slidably connected to the mounting plate in the horizontal direction, and the distribution plate is provided with two sets of slots that connect to the internal slide of the pressure head connecting seat; when the slide groove is displaced in the horizontal direction, the two sets of locking plates conveyed from the material channel can pass through the slots on the distribution plate and the internal slide of the pressure head connecting seat to reach the bottom of the pressure head in sequence; In the hollow inner cavity of the pressure head, locking clips and locking clip guide plates are coaxially fitted from the outside to the inside along the vertical direction; The top of the pressure head is fixedly connected to the pressure head connecting seat; the pressure head connecting seat has two sets of symmetrically distributed slides extending vertically and connected at both ends to the material distribution plate and the pressure head, respectively, and a set of central channels located at the axial center. The locking plate guide plate has a spring guide pin connected to its top end via internal and external threads, and the locking plate guide plate is suspended vertically in the hollow inner cavity of the pressure head; a first spring is sleeved on the spring guide pin. The locking plate jaws and the locking plate guide plate form two sets of vertically extending channels; the locking plate jaws are hinged to the pressure head, and a set of parallel air claws are sleeved on the outer periphery of the top of the locking plate jaws, and the parallel air claws are connected to the air claw joint and the external positive pressure air source. A recessed stop groove is provided at the bottom end of the pressure head. The shape and size of the stop groove match the outer contour of the top of the locking plate seat fitted on the top of the valve stem. When the pressure head 8 descends vertically and contacts the locking plate seat, the stop groove wraps around and locks the top outer edge of the locking plate seat from top to bottom. The pressure head locks the locking plate seat in both the vertical and horizontal directions, and the locking plate guide plate and the valve stem are positioned relative to each other.

2. The automatic locking plate pressing device according to claim 1, characterized in that: The pressure head connecting seat has two sets of symmetrically distributed slides that extend vertically and connect to the pressure head, and a set of central channels located at the axial center.

3. The automatic locking plate pressing device according to claim 2, characterized in that: The diameter of the central channel is larger than that of other parts, and the two ends of the first spring are respectively connected to the top of the central channel and the top of the locking plate guide plate.

4. The automatic locking plate pressing device according to claim 1, characterized in that: A ring of outwardly protruding material-stopping shoulders is provided at the bottom edge of the locking plate guide plate.

5. The automatic locking plate pressing device according to claim 1, characterized in that: A recessed positioning stop is provided at the bottom end of the valve guide plate, and the shape and size of the positioning stop match the outer contour of the top of the valve stem.

6. The automatic locking plate pressing device according to claim 1, characterized in that: A vacuum channel is formed between the locking jaws and the hollow inner cavity of the pressure head, which is connected to the cylinder connector.

7. An automatic locking plate pressing method according to the automatic locking plate pressing device as described in any one of claims 1 to 6, characterized in that: As the pressure head descends vertically to contact the locking plate seat and continues to press down, the first spring is continuously compressed and deformed inside the center of the central channel. Consequently, the locking plate guide plate, under the action of the first spring, always presses the valve stem vertically downward. The locking plate is attracted by the locking plate claw and descends along the valve stem to below the stem groove. As the pressure head descends to its lowest point and then rises vertically back up, it rises until it disengages from the locking plate seat. The locking plate then rises vertically to the rod groove and, under its own elastic force, enters the rod groove.

8. The automatic pressing method for locking plates according to claim 7, characterized in that: The pressure head of the automatic locking plate pressing device has a hollow inner cavity, in which locking plate claws and locking plate guide plates are coaxially fitted from the outside to the inside along the vertical direction; The locking plate guide plate is suspended in the hollow cavity of the pressure head by the spring guide pin connected at the top, and the first spring is sleeved on the spring guide plate. Two sets of vertically extending channels are formed between the locking plate jaws and the locking plate guide plate, allowing the locking plate to descend vertically and pass through the channels to reach the bottom of the pressure head.

9. The automatic pressing method for locking plates according to claim 7, characterized in that: The implementation steps include the following: 1) Locking plate entry; The locking plate enters the internal slide of the pressure head connecting seat through the material channel, and then descends along the channel formed between the locking plate clamp and the locking plate guide plate to reach the bottom of the pressure head; 2) Locking plate positioning The cylinder connector creates a negative pressure environment within the vacuum channel, and the locking plate is attracted to one side of the locking plate clamp. Driven by positive air pressure, the parallel gripper clamps the top of the locking plate gripper from the outside. The locking plate gripper rotates around the central axis with the perforated pin as the center axis. At the same time, the bottom of the locking plate gripper attracts the locking plate and opens radially. 3) Press down the pressure head The pressure head descends vertically, and during this process, the locking plate is always held in place by the vacuum on the locking plate gripper. When the pressure head descends vertically and contacts the locking plate seat, the stop groove wraps around and locks the top outer edge of the locking plate seat from top to bottom, and the pressure head locks the locking plate seat in both the vertical and horizontal directions. When the bottom end of the locking plate guide plate contacts the top end of the valve stem, the positioning stop wraps around and locks the outer edge of the top end of the valve stem, and the locking plate guide plate locks the valve stem in the vertical and horizontal directions. 4) Locking plate pressing As the pressure head descends to its lowest point, the parallel gripper releases the locking plate clamp, and the bottom end of the locking plate clamp absorbs the locking plate while retracting back to its original position, so that the locking plate is fitted onto the valve stem. As the pressure head rises vertically, the locking plate guide plate remains pressed down on the valve stem under the action of the first spring 521. The locking plate is pushed upward into the rod groove by the valve spring, and the locking plate guide plate prevents the locking plate from continuing to rise along the valve stem. Then, air is introduced into the vacuum channel, and the locking jaws release the locking plate; Finally, the locking plate guide plate separates from the valve stem as the pressure head rises, and the pressure head rises to the safe position to complete the locking plate pressing process.

Images