A handle assembly mechanism

Abstract

The application discloses a handle assembling mechanism, which comprises a limiting transmission jig one and a plurality of limiting transmission jigs two, the limiting transmission jigs two are arranged on the two sides of the side plates of the limiting transmission jig one, and a pressing module is arranged between the two side plates of the limiting transmission jig one; a plurality of limiting grooves are arranged on the two side plates of the limiting transmission jig one, and a plurality of corresponding limiting grooves are arranged on the side plates of the limiting transmission jig two close to the limiting transmission jig one; a limiting installation jig is arranged below the two side plates of the limiting transmission jig one, the limiting installation jig is in a stepped shape, and a handle groove is arranged at the top end of the limiting installation jig. The arrangement of the limiting transmission jig one, the limiting transmission jigs two and the limiting installation jig makes the deformation of the handle controllable, the handle just taken out of the mold can be deformed into a desired shape and size through the limiting and pressing module, the production efficiency is improved, and the production cost is reduced.

Description

Technical Field

[0001] This invention relates to the field of bucket handle assembly equipment technology, specifically a handle assembly mechanism. Background Technology

[0002] When a handle emerges from the mold, it exhibits uncontrollable shrinkage, a common problem in the molding process of plastic products. Currently, bucket handle assembly relies heavily on manual labor, requiring workers to manually compress the handle to the desired curvature. This method is not only time-consuming but also demands a significant amount of manual labor, resulting in low production efficiency. Summary of the Invention

[0003] The purpose of this invention is to solve the above-mentioned problems and provide a handle assembly mechanism. By setting a first limiting transmission fixture, a second limiting transmission fixture, and a limiting installation fixture, the deformation of the handle can be controlled, thereby improving production efficiency and assembly quality and reducing costs.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a handle assembly mechanism, comprising a first limiting transmission fixture and several second limiting transmission fixtures, the second limiting transmission fixtures being respectively disposed on both sides of the side plate of the first limiting transmission fixture, and a pressing module being disposed between the two side plates of the first limiting transmission fixture; several limiting grooves being disposed on the two side plates of the first limiting transmission fixture, and several corresponding limiting grooves being disposed on the side plate of the second limiting transmission fixture near the first limiting transmission fixture; and a limiting installation fixture being disposed below both sides of the first limiting transmission fixture, the limiting installation fixture being stepped and having a handle groove at its top. The arrangement of the first limiting transmission fixture, the second limiting transmission fixture, and the limiting installation fixture makes the deformation of the handle controllable, allowing the handle just emerging from the mold to be deformed into the desired shape and size through the limiting and pressing modules.

[0005] Preferably, the first limiting transfer fixture consists of a main board and two side plates located on either side of the main board, with the side plates perpendicular to the main board. The second limiting transfer fixture is an L-shaped plate. This provides a stable support structure, simplifies the assembly process, and since the limiting transfer fixture is made of sheet metal, molds are not required for production. Small-batch production is possible, and the limiting groove or size can be easily modified according to requirements, saving production costs and improving production efficiency.

[0006] Preferably, one side plate of the second limiting transfer fixture is arranged parallel to the side plate of the first limiting transfer fixture. This ensures that the change of the lifting position can be carried out smoothly, improving the accuracy and efficiency of assembly.

[0007] Preferably, several limiting grooves of the first and second limiting transmission fixtures are disposed on one side of the side plate, with the limiting grooves opening outwards. The handle is placed in the limiting groove, which serves to limit the movement of the handle.

[0008] Preferably, the limiting groove on the first limiting transfer fixture and the corresponding limiting groove on the second limiting transfer fixture are on the same horizontal plane. This ensures the smooth transition of the handle from the limiting groove on the first limiting transfer fixture to the limiting groove on the second limiting transfer fixture, thus ensuring the consistency and accuracy of the automated assembly process.

[0009] Preferably, the limiting transmission fixture has an arc-shaped plate at one end, and a pneumatic lever is provided on the arc-shaped plate. The pneumatic lever is used to rotate and clamp the handle, and the arc-shaped plate provides a certain support for the handle, improving assembly efficiency. The pneumatic lever can precisely control the clamping force, avoiding over-clamping or under-clamping of the handle, protecting the handle from damage, and ensuring assembly quality.

[0010] Preferably, the main body of the pressing module is a pressing cylinder, and a pressing plate is provided at the bottom of the pressing cylinder. It is used to press down on the top of the handle, squeezing and deforming the handle, thereby making the opening of the handle larger. The amount of deformation can be precisely controlled, improving assembly quality and production efficiency.

[0011] Preferably, the pressing module is located below the pneumatic shift finger, and the width of the pressing plate is smaller than the width of one side plate of the limit transmission fixture. This effectively avoids collisions or interference with other components during the lifting and lowering process of the limit transmission fixture.

[0012] Preferably, the top cross-section of the handle groove of the limiting installation fixture is an isosceles trapezoid, and the bottom end penetrates through the upper part of the limiting installation fixture. The bottom of the isosceles trapezoid at the top faces upward, making it easier for the handle to be inserted into the handle groove. The lower half of the handle is placed in the handle groove, which can limit the opening of the handle, ensuring that the opening size of the handle meets the design requirements during the assembly process, thus improving the accuracy of the assembly.

[0013] Preferably, the upper part of the limiting installation fixture has several mounting holes below it, and the bottom of the handle groove also has several mounting holes. An installation module is provided on the outside of the limiting installation fixture, which passes through the mounting holes to install the handle onto the barrel wall. The step design of the limiting installation fixture can position the end face of the barrel, allowing the handle to be installed onto the barrel wall simultaneously, thus improving production efficiency.

[0014] The beneficial effects of the present invention are as follows: The present invention provides a handle assembly mechanism, which, by setting a first limiting transmission fixture, a second limiting transmission fixture, and a limiting installation fixture, realizes the control of handle deformation, improves production efficiency and assembly quality, reduces costs, realizes automated control, reduces labor intensity and human error, and can adapt to handles of different sizes, thus having wide adaptability. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0016] Figure 2 for Figure 1 Enlarged view of point A.

[0017] Figure 3 This is a schematic diagram of the limiting installation fixture of the present invention.

[0018] Figure 4 This is a top view of the present invention.

[0019] Reference numerals in the attached drawings: 1: Handle; 2: Limiting and transmitting fixture one; 2.1: Side plate; 2.1.1: Limiting groove; 3: Pneumatic finger; 4: Back plate; 5: Pressing module; 5.1: Pressing cylinder; 5.2: Pressing plate; 6: Limiting and transmitting fixture two; 7: Lifting cylinder; 8: Forward and backward cylinder; 9: Limiting installation fixture; 9.1: Handle groove; 9.2: Mounting hole. Detailed Implementation

[0020] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0021] like Figure 1 and Figure 3As shown, the handle assembly mechanism of the present invention mainly consists of three key components: a first limiting transmission fixture 2, a second limiting transmission fixture 6, and a third limiting installation fixture 9. These components work together to ensure the precise assembly and deformation control of the handle 1. The first limiting transmission fixture 2 consists of a main board and two side plates 2.1 located on both sides of the main board, with the side plates 2.1 perpendicular to the main board. This design not only provides a stable support structure but also simplifies the assembly process. A pressing module 5 is provided between the two side plates 2.1, which is the key component for achieving the deformation of the handle 1 during the entire assembly process. The pressing module 5 consists of a pressing cylinder 5.1 and a pressing plate 5.2. The pressing cylinder 5.1 is responsible for providing the necessary downward pressure, while the pressing plate 5.2 acts directly on the handle 1, causing it to deform as required. The second limiting transmission fixture 6 is an L-shaped plate design, with two fixtures located on both sides of the two side plates 2.1 of the first limiting transmission fixture 2. One side plate of the L-shaped plate is parallel to the side plate 2.1 of the limiting transfer fixture 1. This parallel arrangement ensures smooth switching of the handle 1 station, improving assembly accuracy and efficiency. A pressing module 5 is provided on the main plate between the two side plates 2.1 of the limiting transfer fixture 1. The top of the main plate has an arc-shaped plate with pneumatic levers 3. The pneumatic levers 3 are used to rotate and clamp the handle 1, and the arc-shaped plate provides some support for the handle 1. This design improves assembly efficiency; the pneumatic levers 3 can precisely control the clamping force, avoiding over-clamping or under-clamping of the handle 1, protecting it from damage, and ensuring assembly quality. Limiting installation fixtures 9 are provided on the lower sides of both side plates of the limiting transfer fixture 1 and the limiting transfer fixture 2, used to limit and install the lower half of the handle 1. The main board of the limit transmission fixture 2 is connected to the rear lifting cylinder 7, which is mounted on a support column. A support plate is located above the support column and is mounted on a large rectangular back plate 4 to provide support for the entire handle assembly mechanism. Baffles are connected to both sides of the lower half of the rectangular back plate 4, with the end faces of the baffles extending beyond the end faces of the limit transmission fixture 6, providing protection for the interior of the handle assembly mechanism. This design not only enhances the stability of the entire assembly mechanism but also ensures safety during operation.

[0022] like Figure 1 and Figure 2 and Figure 4As shown, the limiting transfer fixture 2 is the core component of the entire handle assembly mechanism. The limiting transfer fixture 2 is positioned on the central axis of the entire mechanism and consists of a main plate and two side plates 2.1 located on either side of the main plate. The side plates 2.1 are perpendicular to the main plate, forming a robust frame structure. The use of this type of plate not only allows for small-batch production of the assembly but also avoids the high cost of specialized mold production, thus saving production costs and improving production efficiency. It also expands the applicability, enabling the mechanism to adapt to the assembly needs of handles 1 of different sizes and shapes. Furthermore, the limiting groove 2.1.1 or its size can be easily modified according to requirements, saving production costs and improving production efficiency. Each side plate 2.1 has two limiting grooves 2.1.1, which are rectangular grooves located on the outer side of the side plate 2.1, with one side open. This design facilitates the placement of the handle 1 and achieves precise limiting of the handle 1. The corresponding limiting grooves 2.1.1 on both side plates 2.1 are on the same horizontal plane, ensuring the stability and consistency of the handle 1 during transmission. This design not only improves the accuracy of assembly but also reduces assembly errors caused by the positional deviation of the handle 1. The top of the main plate of the limiting transmission fixture 2 has an arc-shaped plate. The length of the arc-shaped plate is less than the width of the limiting transmission fixture 2. The arc-shaped design conforms to the curvature of the handle 1, providing support and positioning for the handle 1. This arc-shaped design not only improves the stability of the handle 1 during assembly but also helps protect the handle 1 from damage. A U-shaped plate is located above the arc-shaped plate, connected by a pneumatic lever 3. The pneumatic lever 3 has a rotating shaft inside, allowing it to rotate flexibly to clamp and release the handle 1. After the handle 1 is clamped by the grippers according to the set opening shape from inside the mold, and then moved into the limiting groove 2.1.1 above the limiting transfer fixture, the pneumatic finger 3 rotates to clamp the handle 1, and the grippers retract. This process not only improves assembly efficiency but also ensures the stability of the handle 1 during assembly. The precise control of the pneumatic finger 3 ensures that the handle 1 will not be damaged due to excessive clamping force or shift due to insufficient clamping force. The main plate of the limiting transfer fixture 2 is equipped with a pressing module 5, which is located below the pneumatic finger 3 and the arc plate. It is a key component for achieving precise deformation of the handle 1. The pressing module 5 includes a pressing cylinder 5.1 and a pressing plate 5.2. The pressing cylinder 5.1 serves as a power source, and by precisely controlling the stroke and pressure of the cylinder, the stability and repeatability of the pressing process are ensured. The pressing plate 5.2 is located directly below the pressing cylinder 5.1 and is the part that directly contacts the handle 1 and applies pressure. The pressure plate 5.2 consists of two rectangular plates. The rectangular plate closer to the outside is bent inward at a certain angle to avoid collision with other components during the pressing process.The width of the lower pressure plate 5.2 is smaller than the width of the side plate 2.1 of the limit transfer fixture 2, ensuring that the lower pressure plate 5.2 will not collide or interfere with surrounding components unnecessarily when the limit transfer fixture 2 is raised or lowered. Two strip-shaped mounting holes are provided below the main plate of the limit transfer fixture 2 for mounting connecting plates. The connecting plates are connected to the lifting cylinder 7 via connecting columns. The lifting cylinder 7 drives the limit transport fixture 1 to move up and down, thereby realizing the transport, limiting, and deformation of the handle 1. This allows for precise control of each step in the assembly process of the handle 1, thus improving the efficiency and quality of the entire assembly process.

[0023] like Figure 1 , Figure 2 As shown, the second limiting transfer fixture 6 is composed of an L-shaped plate. Two second limiting transfer fixtures 6 are provided in this invention. This design not only provides stable support but also simplifies the assembly process. In this invention, two second limiting transfer fixtures 6 are provided, located on both sides of the two side plates 2.1 of the first limiting transfer fixture 2. This layout ensures the continuity and stability of the transfer path of the handle 1. In the initial state, the top and bottom ends of the second limiting transfer fixture 6 are on the same horizontal plane as the top and bottom ends of the first limiting transfer fixture 2, and one side plate is parallel to the two side plates of the first limiting transfer fixture 2. Two limiting grooves 2.1.1 are provided on one side plate of the second limiting transfer fixture 6, and the corresponding limiting grooves 2.1.1 of the first limiting transfer fixture 2 are on the same horizontal plane. This parallel arrangement not only ensures smooth switching of the handle 1 station but also improves the accuracy and efficiency of assembly. The design of the limiting groove 2.1.1 ensures that the handle 1 can be precisely positioned and fixed during the transfer process, thereby guaranteeing the accuracy and stability of the assembly. Two strip-shaped mounting holes are provided on the other side plate of the limiting transfer fixture 2 6 for mounting a connecting plate. The connecting plate is connected to the forward / backward cylinder 8, which is located on both sides of the bottom end of the lifting cylinder 7. The forward / backward cylinder 8 drives the limiting transfer fixture 2 6 to move back and forth, thus changing the position of the handle 1 from the upper limiting groove 2.1.1 to the lower limiting groove 2.1.1, making room for the pressing module 5. This allows the pressing module 5 to smoothly press down and deform the handle 1, achieving precise assembly of the handle 1. Furthermore, the limiting transfer fixture 2 6 also has an emergency function. If the limiting transfer fixture 1 2 malfunctions or the handle 1 dislodles from the limiting transfer fixture 1 2, the forward / backward cylinder 8 can quickly operate to push the limiting transfer fixture 2 6 forward. This timely adjustment can effectively hold handle 1 in place, preventing it from getting caught in other mechanisms after it becomes dislodged, thus avoiding potential equipment damage and production interruption.

[0024] like Figure 3As shown, the limiting installation fixture 9 is a key component in the assembly mechanism of the handle 1. Two limiting installation fixtures 9 are provided, located on either side below the two side plates 2.1 of the limiting transmission fixture 2. The limiting installation fixture 9 has a stepped design, with a handle groove 9.1 at the top. The top cross-section of the handle groove 9.1 is an isosceles trapezoid, with the longer base facing upwards to facilitate the insertion of the handle 1. The bottom end penetrates through the upper part of the limiting installation fixture 9, and the lower half of the handle 1 is placed within the handle groove 9.1, which limits the opening of the handle 1. This limiting design ensures the stability of the handle 1 during assembly, preventing displacement or skew, thus guaranteeing the accuracy and quality of the assembly. Below the upper part of the limiting installation fixture 9, on either side of the handle groove 9.1, there is a mounting hole 9.2. The mounting module passes through the mounting holes 9.2 to install the handle 1 onto the barrel wall. The lower part of the high-level section of the limiting installation fixture 9 can position the end face of the bucket. The bottom end of the handle groove 9.1 has a mounting hole 9.2, which can position the end face of the handle 1 and install the handle 1 onto the bucket wall. This design ensures the precise position of the handle 1 on the bucket wall, improving the overall quality and aesthetics of the product. The outer side of the limiting installation fixture 9 has an installation module for passing through the mounting hole 9.2 to install the handle 1 onto the bucket wall. The limiting installation fixture 9 can simultaneously position the bucket and install the handle 1 onto the bucket wall, improving production efficiency.

[0025] Work process.

[0026] 1. Prepare the handle.

[0027] Before the assembly process begins, all components are in their initial positions. Specifically, the second limiting transfer fixture 6 is precisely positioned behind the first limiting transfer fixture 2 to ensure that the handle 1 can be smoothly transferred from one fixture to another. This layout not only optimizes space utilization but also improves assembly smoothness. First, the front spindle is equipped with specially designed grippers designed to precisely clamp the handle 1 from within the mold according to a preset opening shape. The gripper design ensures precise gripping of the handle 1, avoiding damage during the gripping process. After the gripper successfully clamps the handle 1, it moves the handle 1 into the upper limiting groove 2.1.1 of the first limiting transfer fixture 2. This movement requires high precision to ensure that the handle 1 is accurately placed within the limiting groove 2.1.1. The top end moves to the side of the curved plate; the contact between the top end of the handle 1 and the curved plate not only ensures the stability of the handle 1 but also provides an accurate reference point for subsequent clamping and pressing. In this process, the positioning accuracy of handle 1 is crucial to ensure that the subsequent assembly process can proceed smoothly.

[0028] 2. Clamp the handle tightly.

[0029] After the handle 1 is precisely placed into the limiting groove 2.1.1 above the limiting transfer fixture 2, the pneumatic shift finger 3 begins to perform a rotary clamping action. This action is driven by a precision control system, ensuring the smooth and precise rotation of the pneumatic shift finger 3. The design of the pneumatic shift finger 3 fully considers the shape and material of the handle 1 to ensure that the clamping process is both fast and stable. The rotary clamping action of the pneumatic shift finger 3 is achieved through an internal rotating shaft. The design of the rotating shaft allows the pneumatic shift finger 3 to rotate flexibly, achieving clamping and releasing of the handle 1. This design not only improves the clamping efficiency but also ensures the stability of the clamping, preventing the handle 1 from shifting or tilting during assembly. During the clamping process, the pneumatic shift finger 3 precisely controls the clamping force to avoid over-clamping or under-clamping the handle 1. By precisely controlling the clamping force, not only is the handle 1 protected from damage, but the assembly quality is also ensured. Over-clamping may cause the handle 1 to deform or be damaged, while insufficient clamping may cause the handle 1 to shift or deviate during the assembly process.

[0030] 3. Manual position conversion.

[0031] First, the limiting transfer fixture 2 begins to move downwards under the drive of the lifting cylinder 7. This action is controlled by a precision control system, ensuring a smooth and precise descent of the limiting transfer fixture 2. The precise control of the lifting cylinder 7 is fundamental to the accurate transfer of the handle 1; any minute error could lead to failure in subsequent assembly processes. When the limiting transfer fixture 2 descends to the appropriate position, its upper limiting groove 2.1.1 is on the same horizontal plane as the lower limiting groove 2.1.1 of the limiting transfer fixture 6, ensuring precise alignment of the two limiting grooves 2.1.1. Once this position is reached, the lifting cylinder 7 stops working, and the limiting transfer fixture 2 stops moving. At this time, the limiting transfer fixture 6 moves forward under the drive of the forward / backward cylinder 8. The precise control of the forward / backward cylinder 8 allows the limiting transfer fixture 6 to smoothly and accurately move the handle 1 from the upper limiting groove 2.1.1 of the limiting transfer fixture 2 to the lower limiting groove 2.1.1 of the limiting transfer fixture 6. During this process, handle 1 is precisely positioned within the limiting groove 2.1.1 of the second limiting transfer fixture 6, preparing for subsequent assembly. Handle 1 is moved to a position outside the first limiting transfer fixture 2 to allow it to rise. This adjustment ensures that the first limiting transfer fixture 2 will not interfere with handle 1 during its ascent, thus guaranteeing the smoothness of the entire assembly process. Subsequently, the lifting cylinder 7 operates again, driving the first limiting transfer fixture 2 to rise. When the first limiting transfer fixture 2 rises to the same position as the limiting groove 2.1.1 below the first limiting transfer fixture 2 and the limiting groove 2.1.1 below the second limiting transfer fixture 6, the lifting cylinder 7 stops operating, and the first limiting transfer fixture 2 stops rising. This precise alignment is crucial to ensuring that handle 1 can smoothly proceed to the next assembly step. At this point, the forward / reverse cylinder 8 starts operating, driving the second limiting transfer fixture 6 to move backward. This action moves the top of handle 1 below the pressing cylinder 5.1, and both sides into the limiting groove 2.1.1 below the limiting transfer fixture 2. This precise positioning is crucial to ensuring that handle 1 can be correctly pressed down and deformed. The limiting transfer fixture 2 continues to retract, causing handle 1 to disengage from the limiting groove 2.1.1 below the limiting transfer fixture 2. This action marks the completion of the transfer process of handle 1, preparing it for pressing down and deforming.

[0032] 4. Press down on the handle.

[0033] After the handle 1 is successfully transferred into the limiting groove 2.1.1 below the limiting mounting fixture 9, the limiting mounting fixture 9 begins its upward movement. This movement is driven by a precise control system, ensuring that the limiting mounting fixture 9 rises smoothly and accurately to the appropriate height. As the limiting mounting fixture 9 rises, the lower half of the handle 1 is precisely placed in the handle groove 9.1. The trapezoidal opening at the top of the handle groove 9.1 ensures that the handle 1 is smoothly assembled into the handle groove 9.1 of the limiting mounting fixture 9. Next, the pressing module 5 begins to work. The pressing module 5 consists of a pressing cylinder 5.1 and a pressing plate 5.2. The pressing cylinder 5.1 provides the necessary downward pressure, while the pressing plate 5.2 directly contacts the handle 1 and applies pressure. The activation of the pressing module 5 marks the beginning of the deformation process of the handle 1. Under the action of the pressing module 5, the top of the handle 1 is gradually pressed down. This process requires extremely high precision and control to ensure that the deformation of the handle 1 meets the design requirements. Under the downward pressure of the pressing module 5, the handle 1 is compressed and deformed, thereby increasing the opening of the handle 1. This deformation process is completed under the combined limiting action of the limiting transfer fixture and the limiting installation fixture 9. The precise limiting of the limiting transfer fixture and the limiting installation fixture 9 ensures the stability and consistency of the handle 1 during the deformation process, preventing the handle 1 from shifting or being damaged during deformation. The pressing height of the pressing module 5 is controllable, ensuring assembly accuracy.

[0034] 5. Positioning the bucket and installing the handle.

[0035] The end face of the positioning barrel is positioned below the higher-level part of the limiting installation fixture 9, and the bottom end of the handle 1 is located on the mounting hole 9.2 at the bottom end of the handle groove 9.1. The mounting module on the outside of the limiting installation fixture 9 passes through the mounting hole 9.2 to install the handle 1 onto the barrel wall. This synchronous operation greatly improves production efficiency, reduces production time, and lowers production costs.

[0036] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A handle assembly mechanism, characterized in that, It includes a first limiting transmission fixture and several second limiting transmission fixtures. The second limiting transmission fixtures are respectively set on both sides of the side plate of the first limiting transmission fixture, and a pressing module is provided between the two side plates of the first limiting transmission fixture. The first limiting transfer fixture has several limiting grooves on both side plates, and the second limiting transfer fixture has several corresponding limiting grooves on the side plate near the first limiting transfer fixture, with the limiting grooves opening outwards. Limiting installation fixtures are provided on both sides of the lower part of the limiting transmission fixture. The limiting installation fixtures are stepped and have a handle groove at the top. The limit transmission fixture is connected to the lifting cylinder and consists of a main board that is perpendicular to each other and two side plates located on both sides of the main board. Limiting transmission fixture two is connected to the forward and backward cylinders, and one side plate of limiting transmission fixture two is parallel to the side plate of limiting transmission fixture one. The limiting groove on the first limiting transfer fixture and the corresponding limiting groove on the second limiting transfer fixture are on the same horizontal plane and are located on one side of the side plate.

2. The handle assembly mechanism according to claim 1, characterized in that, The main board between the two side plates of the limit transmission fixture is equipped with a pressing module, and the top of the main board is equipped with an arc plate.

3. The handle assembly mechanism according to claim 1, characterized in that, The second limiting transmission fixture is an L-shaped plate, and one side plate of the L-shaped plate is parallel to the side plate of the first limiting transmission fixture.

4. The handle assembly mechanism according to claim 1, characterized in that, The main board of the limit transmission fixture is connected to the lifting cylinder on the rear side, and the lifting cylinder is mounted on the support column.

5. A handle assembly mechanism according to claim 1, characterized in that, The handle is placed in the limiting groove.

6. A handle assembly mechanism according to claim 1, characterized in that, The limiting groove is a rectangular groove, located on the outer side of the side plate, and one side is open.

7. A handle assembly mechanism according to claim 1, 2, 3, or 5, characterized in that, The limit transmission fixture has an arc-shaped plate at one end, and a pneumatic dial finger is provided on the arc-shaped plate.

8. A handle assembly mechanism according to claim 1, characterized in that, The main body of the pressure module is a pressure cylinder, and a pressure plate is provided at the bottom of the pressure cylinder. The pressure module is located below the pneumatic shift finger.

9. A handle assembly mechanism according to claim 1, characterized in that, The top cross-section of the handle groove of the limiting installation fixture is an isosceles trapezoid, and the bottom end penetrates the upper part of the limiting installation fixture.

10. A handle assembly mechanism according to claim 1 or 9, characterized in that, The upper part of the limiting installation fixture has several mounting holes, and the bottom of the handle groove has several mounting holes.

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