Part posture adjusting machine facilitating construction operation

Abstract

This invention relates to a component posture adjustment machine that facilitates construction and operation, and belongs to the technical field of component posture adjustment machines. It includes a base, a body mounted on the top of the base, an adjustment frame that slides and limits on the surface of the body, an mounting plate mounted on the side of the adjustment frame, and a placement frame rotatably connected to the side of the mounting plate. By setting up a fixed plate, a limiting platform, and an anti-deviation correction component, this invention can form a stable support and resistance against the inside of the limiting platform on the side of the mounting plate when the workpiece is placed inside the placement frame, effectively offsetting the tilting force caused by the additional load and preventing tilting or misalignment between the placement frame and the mounting plate. Even if the volume of the parts inside the placement frame increases and the total weight increases accordingly, this structure can simultaneously expand the support and resistance range inside the limiting platform, always keeping the placement plate and the mounting frame in a vertical and aligned state.

Description

Technical Field

[0001] This invention relates to the field of component posture adjustment machine technology, specifically a component posture adjustment machine that is easy to operate during construction. Background Technology

[0002] High-pressure gas module units, as core components of special equipment and industrial gas supply systems, are mostly small-batch customized products. The specifications and structures of various products differ significantly, lacking a unified standardized production model, and thus placing stringent requirements on the precision of component processing, welding, and assembly. Supporting structural components, as crucial parts of the high-pressure gas module unit, primarily serve to fix, bear weight, and stabilize the entire unit. Their processing and assembly quality directly determines the stability and safety of the high-pressure gas module unit. In the production and processing of supporting structural components, welding and assembly processes are highly prone to construction difficulties.

[0003] To address the aforementioned construction challenges, the industry currently employs conventional methods: using general lifting equipment such as overhead cranes and hand-operated hoists, along with manual labor and ropes and lifting tools, to hoist the supporting structural components to be welded or assembled, thereby adjusting the workpiece's posture. However, this traditional method has many drawbacks. Relying on manual control, the posture adjustment accuracy is extremely low, making it difficult to precisely control the welding angle and assembly position. The workpiece is prone to swaying and shifting, failing to fundamentally solve the problems of unstable welding quality and difficult assembly construction, posing safety hazards, low work efficiency, and being time-consuming and labor-intensive. It is unsuitable for the small-batch, high-precision, and customized production needs of high-pressure gas module units. Therefore, developing a dedicated component posture adjustment machine to achieve precise, stable, and efficient workpiece posture adjustment has become an urgent technical problem to be solved in the production and processing of high-pressure gas module units.

[0004] After clamping a workpiece, the attitude adjustment machine significantly increases the load inside the placement frame. During the translation, transfer, or tilting adjustment of the placement frame, the concentrated internal load easily causes a shift in the center of gravity and local tilting between the placement frame and the mounting frame. This imbalance can lead to the placement frame jamming and obstructed movement, making it difficult to complete the movement and tilting smoothly. Long-term eccentric stress will accelerate the wear and deformation at the connection between the placement frame and the mounting frame, causing the connection to loosen, the weld to crack, and reducing the overall structural stability and service life. On the other hand, the specifications, dimensions, and shapes of the workpieces to be clamped vary. Conventional clamping plates use a rigid contact method to clamp the workpieces, which is inconvenient. When rigidly clamped to fit the workpiece's shape, the concentrated force points in a localized area can easily cause surface damage such as indentations, dents, and scratches. For thin-walled, soft, or precision workpieces, it can also lead to deformation and twisting, compromising the original dimensional accuracy and structural integrity. Furthermore, uneven friction from rigid clamping can easily cause loosening and slippage. During posture adjustments, the workpiece is prone to shifting or misalignment, leading to positioning failure and hindering subsequent processing and assembly. In addition, excessive localized force can exacerbate wear on the clamping plates themselves, reducing the lifespan of the clamping components. Over time, uneven clamping force can further exacerbate workpiece damage and positioning deviations.

[0005] To address the aforementioned issues, innovative design based on existing methods is urgently needed. Summary of the Invention

[0006] The purpose of this invention is to provide a component posture adjustment machine that is easy to operate during construction, so as to solve the problems mentioned in the background. The technical solution of this invention provides a solution that is significantly different from the existing technology, which is too simplistic.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a component posture adjustment machine that is easy to operate during construction, comprising a base, an organism disposed at the top of the base, an adjustment frame that is limited and slidable on the surface of the organism, an installation plate mounted on the side of the adjustment frame, a placement frame rotatably connected to the side of the installation plate, a pneumatic clamp mounted inside the placement frame, a fixing plate mounted inside the placement frame, a limiting platform rotatably connected to the end of the installation plate near the placement frame, and an anti-deviation correction component disposed inside the fixing plate; The anti-deviation correction component includes a limiting plate installed inside the limiting platform, and a motor rotatably connected inside the fixed plate. A rotating rod is installed at the output end of the motor, and a drive ring is installed on the surface of the rotating rod. A movable stage is slidably limited within a groove inside the limiting plate. A support platform is provided inside the movable stage, and a baffle is installed at the bottom of the support platform. A first micro-actuator is installed inside the fixed plate, and an abutment ring is installed at the protruding end of the first micro-actuator. An abutment block is slidably limited laterally inside the movable stage, and one end of the abutment block passes through the movable stage and is equipped with a pressure rod.

[0008] Preferably, the body is mounted on the top of the base via a movable module, a lifting mechanism is installed between the body and the adjustment frame, and the mounting plate is connected to the placement frame via a rotating mechanism.

[0009] Preferably, pneumatic clamps are installed on both sides and the bottom of the placement frame. Pressure plates are installed at the protruding ends of the pneumatic clamps on both sides of the placement frame, and pressure plates are installed at the protruding ends of the pneumatic clamps at the bottom of the placement frame. An elastic adjustment mechanism is provided inside the pressure plates.

[0010] Preferably, the limiting plate has three sets of internal grooves, and each of the three sets of grooves has a movable stage that slides within it; the drive ring has three sets of inclined arc-shaped grooves inside it, and the movable stages in the three sets of grooves slide within the three sets of inclined arc-shaped grooves.

[0011] Preferably, the mobile platform is provided with two sets of support platforms inside. The two sets of support platforms slide symmetrically opposite each other in the sliding groove inside the mobile platform. A spring is installed on the side of the two sets of support platforms away from the central area of ​​the mobile platform, and the other end of the spring is connected to the groove inside the mobile platform.

[0012] Preferably, a spring is installed at one end of the pressure rod near the moving platform, and the other end of the spring is connected to the moving platform; inclined surfaces are provided on both sides of the abutment block, and the inclined surfaces on both sides of the abutment block abut against the baffles at the bottom of the two sets of support platforms respectively.

[0013] Preferably, the elastic adjustment mechanism includes several pressure blocks that slide within the pressure table, a push plate that slides within the cavity of the pressure table, a connecting rod installed on the side of the push plate, a sliding plate installed at the end of the connecting rod, and a second micro actuator installed at the end of the pressure table away from the pressure blocks.

[0014] Preferably, the extended end of the second micro-actuator is connected to the push plate, and the slide plate slides within the cavity of the pressure block.

[0015] Preferably, a protruding plate is mounted on the surface of the connecting rod, and a spring is mounted on the side end of the protruding plate, with the other end of the spring connected to the pressure block.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention, by setting up a fixed plate, a limiting platform, and an anti-deviation correction component, can form a stable support and resistance inside the limiting platform on the side of the mounting plate when the workpiece is placed inside the placement frame. This effectively counteracts the tilting force caused by the additional load and prevents tilting or misalignment between the placement frame and the mounting plate. Even if the volume of the parts inside the placement frame increases and the total weight increases accordingly, this structure can simultaneously expand the support and resistance range inside the limiting platform, always keeping the placement plate and the mounting frame in a vertical and regular state. This significantly improves the accuracy of workpiece posture adjustment and eliminates problems such as running jamming and positioning deviation caused by center of gravity shift. It can also prevent loosening, deformation, and wear caused by uneven force at the connection, extend the overall structural life of the equipment, and maintain long-term stable operation of the equipment.

[0017] 2. This invention, by setting up an elastic adjustment mechanism and a pressure table, can achieve flexible and close clamping of both sides of the parts, eliminating the various drawbacks of traditional rigid clamping. Furthermore, as the size and weight of the parts increase, the elastic resistance of the flexible clamping can be adaptively increased simultaneously, maintaining a stable and moderate clamping force at all times. This avoids damage such as indentations, scratches, and dents on the workpiece surface, perfectly preserving the workpiece's appearance quality and dimensional accuracy. It is especially suitable for precision workpieces, thin-walled workpieces, and soft workpieces, preventing workpiece deformation and twisting under stress. The adaptive elastic resistance ensures uniform clamping force, eliminating problems such as workpiece slippage, displacement, and loosening. This allows the workpiece to maintain stable positioning throughout the entire process of transfer, flipping, and posture adjustment, improving the accuracy of posture adjustment. It can also buffer vibrations generated by equipment operation, reducing damage to workpieces and equipment components from rigid impacts and extending the service life of the clamping components. It eliminates the need for frequent fixture changes based on workpiece specifications, adapting to the clamping needs of workpieces of various sizes and weights. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the main structure of the present invention; Figure 2 This is a schematic diagram of the main structure of the fixing plate and limiting platform of the present invention; Figure 3 This is a cross-sectional structural diagram of the fixing plate and the limiting platform of the present invention; Figure 4 This is a schematic diagram of the main structure of the anti-deviation correction component of the present invention; Figure 5 This is a partial structural schematic diagram of the anti-deviation correction component of the present invention; Figure 6 This is a schematic diagram of the main structure of the pressing table of the present invention; Figure 7 This is a cross-sectional structural diagram of the pressure table of the present invention; Figure 8 For the present invention Figure 7 Enlarged structural diagram at point A; Figure 9This is a schematic diagram of the exploded structure of the pressure block of the present invention.

[0019] In the diagram: 1. Base; 2. Body; 3. Adjustment frame; 4. Mounting plate; 5. Placement frame; 6. Pneumatic clamp; 7. Pressure plate; 8. Pressure table; 9. Fixing plate; 10. Limiting platform; 111. Limiting plate; 112. Rotating rod; 113. Drive ring; 114. Moving platform; 115. Support platform; 116. Baffle; 117. First micro actuator; 118. Contact ring; 119. Contact block; 110. Pressure rod; 121. Pressure block; 122. Push plate; 123. Connecting rod; 124. Slide plate; 125. Second micro actuator. Detailed Implementation

[0020] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0021] Please see Figures 1-9 This invention provides a technical solution: a component posture adjustment machine that is easy to operate during construction, including a base 1, an organism 2 set at the top of the base 1, an adjustment frame 3 that is limited and slidable on the surface of the organism 2, an installation plate 4 installed on the side of the adjustment frame 3, a placement frame 5 rotatably connected to the side of the installation plate 4, the organism 2 being installed at the top of the base 1 via a moving module, a lifting mechanism being installed between the organism 2 and the adjustment frame 3, the installation plate 4 and the placement frame 5 being connected via a rotating mechanism, a pneumatic clamp 6 being installed inside the placement frame 5, a fixing plate 9 being installed inside the placement frame 5, a limiting platform 10 being rotatably connected to the end of the installation plate 4 near the placement frame 5, an anti-deviation correction component being provided inside the fixing plate 9, pneumatic clamps 6 being installed on both sides and the bottom of the placement frame 5, pressure platforms 8 being installed at the extended ends of the pneumatic clamps 6 on both sides of the placement frame 5, a pressure plate 7 being installed at the extended end of the pneumatic clamps 6 at the bottom of the placement frame 5, and an elastic adjustment mechanism being provided inside the pressure platform 8; The parts are placed inside the placement frame 5. Then, the pneumatic clamp 6 at the bottom of the placement frame 5 is driven to push the pressure plate 7 to clamp the bottom of the parts. Then, the pneumatic clamp 6 at the side of the placement frame 5 is driven to push the pressure table 8 to clamp the parts on both sides. The moving module at the top of the drive base 1 can drive the placement frame 5 to move laterally through the machine body 2. The lifting mechanism drives the placement frame 5 to move vertically. Finally, the rotating mechanism drives the placement frame 5 to flip the position of the workpiece.

[0022] In one embodiment of the present invention, the anti-deviation correction component includes a limiting plate 111 installed inside the limiting platform 10, and a motor rotatably connected inside the fixed plate 9. A rotating rod 112 is installed at the output end of the motor, and a drive ring 113 is installed on the surface of the rotating rod 112. A movable stage 114 is slidably limited within a groove inside the limiting plate 111. A support platform 115 is provided inside the movable stage 114, and a baffle 116 is installed at the bottom of the support platform 115. A first micro-driver 117 is installed inside the fixed plate 9, and an abutment ring 118 is installed at the protruding end of the first micro-driver 117. An abutment block 119 is slidably limited laterally inside the movable stage 114. One end of the abutment block 119 passes through the movable stage 114 and is equipped with a pressure rod 110. The limiting plate 111 has three sets of grooves inside, and each of the three sets of grooves limits the movement of the vehicle. The sliding platform 114 is provided; the drive ring 113 has three sets of inclined arc-shaped grooves inside the drive ring 113. The sliding platform 114 in the three sets of grooves is limited and slides within the three sets of inclined arc-shaped grooves. The sliding platform 114 has two sets of support platforms 115 inside. The two sets of support platforms 115 slide symmetrically opposite each other in the sliding groove inside the sliding platform 114. A spring is installed on the side of the two sets of support platforms 115 away from the central area of ​​the sliding platform 114. The other end of the spring is connected to the groove inside the sliding platform 114. A spring is installed on the end of the pressure rod 110 near the sliding platform 114. The other end of the spring is connected to the sliding platform 114. The abutment block 119 has inclined surfaces on both sides. The inclined surfaces on both sides of the abutment block 119 abut against the baffles 116 at the bottom of the two sets of support platforms 115 respectively. During the workpiece clamping process, the motor drives the rotating rod 112 to rotate. The rotating rod 112, through its internal inclined arc groove, drives the moving stage 114 to slide within the groove on the inner side of the limiting plate 111 until the support stage 115 is tightly against the inner wall of the limiting stage 10. This provides stable support for the placement frame 5, counteracting the downward pressure from the workpiece's own weight and preventing the placement frame 5 from tilting relative to the mounting plate 4. This action can counteract the downward load generated when the placement frame 5 clamps the workpiece, preventing tilting between the placement frame 5 and the mounting plate 4 and avoiding affecting the workpiece's machining accuracy. When the placed component is large, the first micro-driver 117 is activated, causing its extended end to push the abutment ring 118 to move, thereby squeezing the pressure rod 110 and causing the inclined surface of the abutment block 119 to push against the two sets of baffles 116. When the size and weight of the placed components increase, the first micro-actuator 117 is activated, causing its extended end to push the contact ring 118 to squeeze the pressure rod 110. This causes the inclined surface of the contact block 119 to push against the two sets of baffles 116, driving the baffles 116 to cause the top support platform 115 to unfold to both sides, expanding the support contact area and firmly stabilizing the placement frame 5, ensuring that it remains perpendicular to the mounting plate 4. The two sets of baffles 116 then cause the top support platform 115 to unfold to both sides of the moving platform 114, expanding the support contact range and ensuring that the placement frame 5 remains perpendicular to the mounting plate 4. This is achieved through the fixing plate 9 and the limiting platform 10. In conjunction with the anti-deviation correction component, it can provide stable support to the limiting platform 10 on the side of the mounting plate 4 when the placement frame 5 is loaded with workpieces, effectively counteracting the eccentric torque caused by the eccentric load and preventing tilting or misalignment between the placement frame 5 and the mounting plate 4. This structure can adaptively expand the support range to accommodate large-volume and heavy workpieces, maintain the regularity of the placement frame 5 throughout the process, significantly improve the accuracy of workpiece posture adjustment, and avoid running jams and positioning deviations caused by center of gravity shift. At the same time, it can alleviate the problem of uneven force at the connection, prevent loosening, deformation and wear of components, extend the overall service life of the equipment, and ensure long-term stable operation of the equipment.

[0023] In one embodiment of the present invention, the elastic adjustment mechanism includes several pressure blocks 121 that are limited and slidably inside the pressure table 8. A push plate 122 is limited and slidably inside the cavity of the pressure table 8. A connecting rod 123 is installed on the side end of the push plate 122. A sliding plate 124 is installed at the end of the connecting rod 123. A second micro actuator 125 is installed at the end of the pressure table 8 away from the pressure blocks 121. The protruding end of the second micro actuator 125 is connected to the push plate 122. The sliding plate 124 is limited and slidably inside the cavity of the pressure blocks 121. A protruding plate is installed on the surface of the connecting rod 123. A spring is installed on the side end of the protruding plate. The other end of the spring is connected to the pressure block 121. When the pressure table 8 clamps the parts on both sides, several pressure blocks 121 inside the table will come into contact with the workpiece surface. When facing the uneven workpiece surface, the pressure blocks 121 are squeezed and retract into the pressure table 8, simultaneously compressing the end springs. The spring force generated by the spring rebound will push the pressure blocks 121 to press tightly against the workpiece, achieving flexible buffer clamping. For workpieces that are large in size and heavy in weight, the second micro driver 125 can be activated to push the push plate 122 towards the pressure block 121, further squeezing the spring, increasing the spring rebound force, and increasing the resistance of the pressure block 121 to the workpiece. Through the cooperation of the elastic adjustment mechanism and the pressure table 8, flexible clamping of the workpiece can be achieved, completely eliminating the defects of traditional rigid clamping. Moreover, the clamping force can be adaptively increased according to the workpiece specifications and weight, maintaining a stable and moderate clamping effect, effectively avoiding damage such as indentations, scratches, and dents on the workpiece surface, and protecting the appearance and dimensional accuracy of the workpiece.

[0024] Working principle: When in use, the parts are first placed inside the placement frame 5. Then, the pneumatic clamp 6 at the bottom of the placement frame 5 is driven to push the pressure plate 7 to clamp the bottom of the parts. Then, the pneumatic clamp 6 on the side of the placement frame 5 is driven to push the pressure table 8 to clamp the parts on both sides. The moving module at the top of the base 1 can drive the placement frame 5 to move horizontally through the machine body 2. The lifting mechanism can drive the placement frame 5 to move vertically. Finally, the rotating mechanism can drive the placement frame 5 to flip the position of the workpiece. While clamping the workpiece, the rotating rod 112 is driven to rotate by the motor. When the rotating rod 112 rotates, it drives the moving table 114 to slide in the groove inside the limiting plate 111 through the internal inclined arc groove until the support table 115 abuts against the inner wall of the limiting table 10. At this time, the support table 115 abuts against the inner wall of the limiting table 10 to provide support force to the placement frame 5, so as to avoid the weight generated when the workpiece is clamped inside the placement frame 5 from exerting downward pressure on the placement frame 5, causing the placement frame 5 and the mounting plate 4 to form an inclined shape, which would affect the processing accuracy of the workpiece inside the placement frame 5. When the placed parts are large, the first micro driver 117 pushes the abutment ring 118 to move the abutment pressure rod 110 through the extended end, so that it pushes the inclined surface of the abutment block 119 to squeeze the two sets of baffles 116. The two sets of baffles 116 respectively drive the support table 115 on the top to move towards the sides of the moving table 114, expanding the abutment range of the support table 115, and ensuring that the placement frame 5 and the mounting plate 4 are always in a vertical state. When the pressure table 8 clamps and abuts against both sides of the component, several pressure blocks 121 inside the pressure table 8 come into contact with the component. When the pressure blocks 121 come into contact with the component in a concave-convex manner, the pressure blocks 121 are squeezed and contract towards the inside of the pressure table 8. While the pressure blocks 121 are contracting and moving, they squeeze the spring at their ends. The rebound generated when the spring contracts pushes the pressure blocks 121 to achieve flexible contact with the component. When the component is large, the push plate 122 is pushed towards the pressure block 121 by the extension end of the second micro actuator 125, which generates reverse compression on the spring at the end of the pressure block 121, increasing the spring rebound effect when the pressure block 121 is squeezed.

[0025] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A component posture adjustment machine for facilitating construction operation, comprising a base (1), characterized in that: The base (1) has an organic body (2) at its top. An adjustment frame (3) is slidably positioned on the surface of the organic body (2). An installation plate (4) is installed on the side of the adjustment frame (3). A placement frame (5) is rotatably connected to the side of the installation plate (4). A pneumatic clamp (6) is installed inside the placement frame (5). A fixing plate (9) is installed inside the placement frame (5). A limiting platform (10) is rotatably connected to one end of the installation plate (4) near the placement frame (5). An anti-deviation correction component is installed inside the fixing plate (9). The anti-deviation correction assembly includes a limiting plate (111) installed inside the limiting platform (10), and a motor rotatably connected inside the fixed plate (9). A rotating rod (112) is installed at the output end of the motor, and a drive ring (113) is installed on the surface of the rotating rod (112). A moving platform (114) is slidably limited in the groove inside the limiting plate (111). A support platform (115) is provided inside the moving platform (114). A baffle (116) is installed at the bottom of the support platform (115). A first micro driver (117) is installed inside the fixed plate (9). An abutment ring (118) is installed at the protruding end of the first micro driver (117). An abutment block (119) is slidably limited laterally inside the moving platform (114). One end of the abutment block (119) passes through the moving platform (114) and is equipped with a pressure rod (110).

2. The component posture adjusting machine according to claim 1, wherein: The base (1) has an organic body (2) mounted on its top via a movable module. A lifting mechanism is installed between the organic body (2) and the adjustment frame (3). The mounting plate (4) is connected to the placement frame (5) via a rotating mechanism.

3. The component posture adjustment machine for easy construction operation according to claim 2, characterized in that: Pneumatic clamps (6) are installed on both sides and bottom of the placement frame (5). Pressure plates (8) are installed at the extended ends of the pneumatic clamps (6) on both sides of the placement frame (5). Pressure plates (7) are installed at the extended ends of the pneumatic clamps (6) at the bottom of the placement frame (5). An elastic adjustment mechanism is provided inside the pressure plates (8).

4. The component posture adjustment machine for easy construction operation according to claim 3, characterized in that: The limiting plate (111) has three sets of grooves inside, and each of the three sets of grooves has a movable stage (114) that slides within it. The drive ring (113) has three sets of inclined arc grooves inside it. The three sets of inclined arc grooves are inside the drive ring (113), and the movable stages (114) in the three sets of grooves slide within them.

5. A component posture adjustment machine for easy construction operation according to claim 4, characterized in that: The movable platform (114) is provided with two sets of support platforms (115). The two sets of support platforms (115) slide symmetrically in opposite directions in the sliding groove inside the movable platform (114). A spring is installed on the side of the two sets of support platforms (115) away from the central area of ​​the movable platform (114), and the other end of the spring is connected to the groove inside the movable platform (114).

6. The component posture adjustment machine for easy construction operation according to claim 1, characterized in that: The pressure rod (110) is equipped with a spring at one end near the moving platform (114), and the other end of the spring is connected to the moving platform (114); the abutment block (119) has inclined surfaces on both sides, and the inclined surfaces on both sides of the abutment block (119) abut against the baffles (116) at the bottom of the two sets of support platforms (115) respectively.

7. A component posture adjustment machine for easy construction operation according to claim 3, characterized in that: The elastic adjustment mechanism includes several pressure blocks (121) that are limited and slidable inside the pressure table (8). A push plate (122) is limited and slidable inside the cavity of the pressure table (8). A connecting rod (123) is installed on the side end of the push plate (122). A sliding plate (124) is installed at the end of the connecting rod (123). A second micro actuator (125) is installed at the end of the pressure table (8) away from the pressure block (121).

8. A component posture adjustment machine for easy construction operation according to claim 7, characterized in that: The extended end of the second micro actuator (125) is connected to the push plate (122), and the slide plate (124) slides within the cavity inside the pressure block (121).

9. A component posture adjustment machine for easy construction operation according to claim 8, characterized in that: A protruding plate is mounted on the surface of the connecting rod (123), and a spring is mounted on the side end of the protruding plate. The other end of the spring is connected to the pressure block (121).

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