A handle assembly apparatus

Abstract

The utility model relates to handle assembly field, more particularly, relate to a handle assembly equipment, including frame, assembly conveying line, a plurality of tooling, assembly conveying line is located on the frame, for conveying a plurality of tooling, tooling is located on the assembly conveying line, for placing and spacing the spring and shell, spring feeding device, first workpiece preset device, torsional spring screwing device, second workpiece preset device and riveting device all are located on the frame, and are arranged along assembly conveying line conveying direction in proper order. The utility model aims at providing a handle assembly equipment, at least solves how to improve the assembly quality and efficiency of handle.

Description

Technical Field

[0001] This utility model relates to the field of handle assembly, and more specifically, to a handle assembly device. Background Technology

[0002] Currently, most handle assembly in the industry is done manually, and there are many types of handle parts, including retaining rings, washers, torsion springs, gaskets, housings, and handles. Among them, relatively simple components such as washers and gaskets can basically meet the requirements through manual assembly, but there are many drawbacks in the process of manually assembling retaining rings, torsion springs, housings, and handles.

[0003] First, when assembling the retaining ring, tools are needed to pry it open. Manual operation makes it difficult to control the prying force, which can lead to deformation of the retaining ring. Second, the assembly of the torsion spring requires ensuring that the torsion spring is placed inside the housing. Manual assembly often requires a lot of time to overcome the spring's rebound force and fully press the torsion spring into the housing. Finally, when pressing the housing and handle together, manual assembly makes it difficult to accurately control the clamping force. If the clamping force is insufficient, the handle cannot be fully pressed into the housing, and the handle is prone to loosening and abnormal noise during use. If the clamping force is too large, the bottom edge of the handle is prone to cracking, which will affect the quality of the finished handle.

[0004] In conclusion, it is necessary to develop a handle assembly device to solve the problem of inaccurate assembly in the three key processes of snap ring installation, torsion spring installation, and clamping and fixing the base and handle, thereby improving the overall assembly quality and efficiency and reducing the defect rate of finished handles. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] The purpose of this invention is to provide a handle assembly device, which at least solves the problem of how to improve the assembly quality and efficiency of handles.

[0007] (II) Technical Solution

[0008] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a handle assembly device, comprising:

[0009] frame;

[0010] Assembly conveyor line and several tooling fixtures. The assembly conveyor line is set on the frame and is used to transport several tooling fixtures. The tooling fixtures are set on the assembly conveyor line and are used to place and limit the snap rings and housings.

[0011] The snap ring feeding device, the first workpiece pre-positioning device, the torsion spring tightening device, the second workpiece pre-positioning device, and the riveting device are all mounted on the frame and arranged sequentially along the conveying direction of the assembly conveyor line.

[0012] The device includes a snap ring feeding device for transferring snap rings to the corresponding fixture, a first workpiece pre-setting device for moving torsion springs and housings to the corresponding fixture, a torsion spring tightening device for transferring torsion springs to the housings on the corresponding fixture, a second workpiece pre-setting device for moving handles to the housings on the corresponding fixture, and a riveting device for riveting handles, snap rings, and housings together.

[0013] Furthermore, the aforementioned riveting device includes:

[0014] The rivet pressing block and the rivet pressing block drive are provided. The rivet pressing block is located above the assembly conveyor line and is positioned opposite to the snap ring on the corresponding tooling. The rivet pressing block drive is located on the frame and is connected to the rivet pressing block for transmission. The rivet pressing block drive is used to drive the rivet pressing block to move towards or away from the corresponding tooling on the assembly conveyor line, thereby pressing down or releasing the workpiece on the corresponding tooling.

[0015] The support plate and the support plate drive are provided. The support plate is located below the assembly conveyor line and is positioned opposite to the corresponding tooling. The support plate drive is located below the frame and is connected to the support plate in a transmission manner. The support plate drive is used to drive the support plate to move towards or away from the corresponding tooling on the assembly conveyor line, so as to raise or lower the corresponding tooling.

[0016] The punch and punch drive are provided. The punch is located below the assembly conveyor line and is positioned opposite to the snap ring on the corresponding tooling. The punch drive is located on the frame and is connected to the punch drive. The punch drive is used to drive the punch to move toward or away from the snap ring position so that the punch is placed in the housing to lift the handle, snap ring and housing or to loosen the handle, snap ring and housing.

[0017] Furthermore, the aforementioned tooling is provided with limiting through holes, and at least two limiting posts are fixed on the support plate. The number of limiting posts is the same as the number of limiting through holes, and their positions are set in a one-to-one correspondence. The limiting posts are inserted and engaged with the corresponding limiting through holes of the corresponding tooling to limit the position of the corresponding tooling in the horizontal direction.

[0018] Further, the aforementioned punches are provided at least two in a ring-shaped, equally spaced arrangement. The fixture includes a feeding rod for stacking the snap ring, torsion spring, housing, and handle, ensuring that the snap ring, torsion spring, housing, and handle are aligned on the same axis on the fixture. The fixture also has punch through holes, which are arranged in a ring-shaped, equally spaced arrangement around the feeding rod. The number of punch through holes is the same as the number of punches, and their positions correspond one-to-one. The punch through holes are used for the corresponding punches to pass through.

[0019] Further, the aforementioned snap ring feeding device includes:

[0020] A tapered punch is located on the assembly conveyor line and is used for circlip connection;

[0021] The lower punch sleeve and the lower punch sleeve drive are provided. The lower punch sleeve is located above the tapered punch and is coaxially arranged with the tapered punch. The lower punch sleeve drive is located on the frame and is connected to the lower punch sleeve in a transmission manner. The lower punch sleeve drive is used to drive the lower punch sleeve to move toward or away from the tapered punch so as to drive the tapered punch to connect with the corresponding tooling and to drive the snap ring sleeved on the tapered punch to slide along the tapered punch to the corresponding tooling and to deform outward.

[0022] The elastic rotary mechanism is mounted on the frame and engaged with the conical punch. The rotary mechanism has an elastic force that drives the conical punch to move toward the lower punch sleeve.

[0023] Further, the aforementioned torsion spring tightening device includes: a lifting drive component, a tightening block, a positioning post, and a tightening block drive component. The lifting drive component is mounted on the frame, the tightening block drive component is mounted on the output end of the lifting drive component and is connected to the tightening block in a transmission manner, the tightening block is positioned opposite to the torsion spring on the tooling, and the positioning post is mounted on the tightening block.

[0024] The lifting drive is used to drive the tightening block drive towards or away from the assembly conveyor line so that the positioning pin can be inserted into or disengaged from the hook at one end of the torsion spring. The tightening block drive is used to drive the tightening block to rotate. The tightening block drives the positioning pin to rotate synchronously around the central axis of the tightening block so that the hook at one end of the torsion spring can rotate around the central axis of the tightening block into the housing.

[0025] Furthermore, the aforementioned assembly conveyor line has a closed-loop structure, and the handle assembly equipment also includes:

[0026] The material handling mechanism is located on one side of the assembly conveyor line and downstream of the riveting device;

[0027] The unloading conveyor line is located on the frame, on one side of the assembly conveyor line;

[0028] The unloading and conveying mechanism is used to move the finished handle on the corresponding tooling to the unloading conveyor line to prevent the finished handle on the corresponding tooling from moving along the assembly conveyor line, so that the empty corresponding tooling can continue to move along the assembly conveyor line. The unloading conveyor line is used to transport the finished handle.

[0029] (III) Beneficial Effects

[0030] Compared with the prior art, the beneficial effects of the technical solution provided in this application include at least the following:

[0031] The handle assembly equipment provided by this utility model, when in use, involves the assembly conveyor line transporting the tooling sequentially through various devices. The tooling is first conveyed to the snap ring feeding device, which transfers the snap ring onto the tooling. Subsequently, the tooling is conveyed to the first workpiece pre-positioning device, which transfers the torsion spring and housing onto the tooling, stacking the housing on the snap ring and the torsion spring on the housing. Next, the tooling is conveyed to the torsion spring tightening device, which twists the torsion spring on the tooling, causing it to rotate, retract, and embed into the housing. Afterward, the tooling is conveyed to the second workpiece pre-positioning device, which moves the handle onto the housing of the tooling, allowing the handle to fit onto the housing. Finally, the tooling is conveyed to the riveting device, which rivets the handle, snap ring, and housing together, completing the handle assembly. As can be seen, this utility model achieves standardized installation of the snap ring through a snap ring feeding device, uses a torsion spring tightening device to overcome the spring's rebound force and fully press the spring into the housing, and utilizes a riveting device to stably control the clamping force, ensuring a firm fit between the housing and the handle. It precisely overcomes the three key challenges of manually assembling the snap ring, torsion spring, housing, and handle. Furthermore, each device is arranged sequentially along the assembly conveyor line, allowing each process to proceed in a coherent and orderly manner. The automated assembly of the equipment replaces manual assembly, significantly improving the assembly quality and efficiency of the handle, ensuring that the finished handle is free from deformation, loosening, and cracking. This provides stable and reliable technical support for the mass production of high-quality handles. Moreover, the riveting device of this utility model can be adapted to handles with a clamping assembly process, enabling compatible production of handles of multiple specifications and expanding the applicability of the equipment. Attached Figure Description

[0032] The various objectives, features, and advantages of this invention will become more apparent from the following detailed description of preferred embodiments in conjunction with the accompanying drawings. The drawings are merely illustrative illustrations of the invention and are not necessarily drawn to scale. In the drawings, the same reference numerals always denote the same or similar parts. Wherein:

[0033] Figure 1 This is a perspective view of the handle assembly device in the embodiment;

[0034] Figure 2 This is a schematic diagram of the riveting device in the embodiment;

[0035] Figure 3 This is a schematic diagram of the circlip feeding device in the embodiment;

[0036] Figure 4 This is a schematic diagram of the torsion spring tightening device in the embodiment;

[0037] Figure 5 This is a schematic diagram of the support plate in the embodiment;

[0038] Figure 6This is a schematic diagram of the unloading and handling mechanism and the unloading conveyor line in the embodiment.

[0039] The annotations in the attached figures are explained as follows:

[0040] 1. Rack;

[0041] 2. Assembly conveyor line;

[0042] 3. First workpiece pre-positioning device;

[0043] 4. Second workpiece pre-positioning device;

[0044] 5. Riveting device; 51. Riveting block; 52. Riveting block drive component; 53. Punch; 54. Punch drive component; 55. Support plate; 56. Support plate drive component; 57. Limiting post;

[0045] 6. Snap ring feeding device; 61. Lower punch sleeve; 62. Lower punch sleeve drive component; 63. Conical punch; 64. Elastic rotary mechanism;

[0046] 7. Torsion spring tightening device; 71. Tightening block; 72. Positioning pin; 73. Tightening block drive component; 74. Lifting drive component;

[0047] 8. Tooling; 81. Punch through hole; 82. Limiting through hole; 83. Material feeding rod;

[0048] 9. Material handling mechanism;

[0049] 10. Material feeding conveyor line;

[0050] 11. Snap ring;

[0051] 12. Torsion spring;

[0052] 13. Shell;

[0053] 14. Handle. Detailed Implementation

[0054] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0055] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0056] See Figure 1 , Figure 1The figure shows a perspective view of the handle assembly equipment in the embodiment. The handle assembly equipment includes a frame 1, an assembly conveyor line 2, a first workpiece pre-positioning device 3, a second workpiece pre-positioning device 4, a riveting device 5, a snap ring feeding device 6, a torsion spring tightening device 7, and several tooling fixtures 8.

[0057] Assembly conveyor line 2 is mounted on frame 1 by means of screwing or welding, and is used to transport several tooling fixtures 8. Tooling fixtures 8 are mounted on assembly conveyor line 2 and are used to place and limit snap rings 11 and housings 13.

[0058] The snap ring feeding device 6, the first workpiece pre-positioning device 3, the torsion spring tightening device 7, the second workpiece pre-positioning device 4, and the riveting device 5 are all mounted on the frame 1 and arranged sequentially along the conveying direction of the assembly conveyor line 2. Specifically, the snap ring feeding device 6 transfers the snap ring 11 to the corresponding fixture 8. The first workpiece pre-positioning device 3 moves the torsion spring 12 and the housing 13 to the corresponding fixture 8. The torsion spring tightening device 7 transfers the torsion spring 12 into the housing 13 on the corresponding fixture 8. The second workpiece pre-positioning device 4 moves the handle 14 to the housing 13 on the corresponding fixture 8. The riveting device 5 rivets the handle 14, the snap ring 11, and the housing 13 together.

[0059] When using one of the handle assembly devices described above, the assembly conveyor line 2 transports the tooling 8 sequentially through each device. Tooling 8 is first transported to the snap ring feeding device 6, where the snap ring feeding device 6 transfers the snap ring 11 onto the tooling 8. Subsequently, tooling 8 is transported to the first workpiece pre-positioning device 3, where the first workpiece pre-positioning device 3 transfers the torsion spring 12 and the housing 13 onto the tooling 8, so that the housing 13 is stacked on the snap ring 11 and the torsion spring 12 is stacked on the housing 13. Next, tooling 8 is transported to the torsion spring tightening device 7, where the torsion spring tightening device 7 twists the torsion spring 12 on the tooling 8, causing the torsion spring 12 to rotate, retract, and embed into the housing 13. Afterward, tooling 8 is transported to the second workpiece pre-positioning device 4, where the second workpiece pre-positioning device 4 moves the handle 14 onto the housing 13 of the tooling 8, so that the handle 14 is fitted onto the housing 13. Finally, tooling 8 is conveyed to riveting device 5, which rivets handle 14, retaining spring 11, and housing 13 together, completing handle assembly. It can be seen that this invention achieves standardized installation of retaining spring 11 through retaining spring feeding device 6, overcomes the rebound force of torsion spring 12 by using torsion spring tightening device 7 to fully press torsion spring 12 into housing 13, and uses riveting device 5 to stably control the clamping force, ensuring a firm fit between housing 13 and handle 14. This precisely overcomes the three key challenges of manually assembling retaining spring 11, torsion spring 12, housing 13, and handle 14. Furthermore, each device is sequentially arranged along assembly conveyor line 2, allowing each process to proceed in a continuous and orderly manner. Automated assembly replaces manual assembly, significantly improving the assembly quality and efficiency of handles, ensuring that the finished handles are free from deformation, loosening, and cracking. This provides stable and reliable technical support for high-quality mass production of handles. Moreover, the riveting device 5 of this invention can be adapted to handles with clamping assembly processes, enabling compatible production of handles of various specifications and expanding the applicability of the equipment.

[0060] If the assembly conveyor line 2 uses a slide rail conveyor, the tooling 8 is slidably mounted on the assembly conveyor line 2. The tooling 8 can be moved manually or driven by the assembly conveyor line 2. If the assembly conveyor line 2 uses a turntable conveyor, conveyor belt conveyor, chain conveyor, or other similar conveyor, the tooling 8 is fixed to the assembly conveyor line 2 by bolting or welding. The first workpiece pre-positioning device 3 and the second workpiece pre-positioning device 4 can be used to manually place workpieces, so that the housing 13 is stacked on the retaining spring 11, the torsion spring 12 is stacked on the housing 13, and the handle 14 is sleeved on the housing 13. Alternatively, a robotic arm can be used to automatically place workpieces, so that the housing 13 is stacked on the retaining spring 11, the torsion spring 12 is stacked on the housing 13, and the handle 14 is sleeved on the housing 13.

[0061] See Figure 2In one embodiment of the riveting device 5, the riveting device 5 includes a riveting block 51, a riveting block drive 52, a punch 53, a punch drive 54, a support plate 55, and a support plate drive 56. The riveting block 51 is located above the assembly conveyor line 2 and is positioned opposite to the retaining spring 11 on the corresponding tooling 8. The riveting block drive 52 is mounted on the frame 1 by screwing or welding and is driveably connected to the riveting block 51. The riveting block drive 52 drives the riveting block 51 to move towards or away from the corresponding tooling 8 on the assembly conveyor line 2, pressing down on or releasing the workpiece on the corresponding tooling 8. The support plate 55 is located below the assembly conveyor line 2 and is positioned opposite to the corresponding tooling 8. The support plate drive 56 is mounted below the frame 1 by screwing or welding and is driveably connected to the support plate 55. The support plate drive 56 drives the support plate 55 to move towards or away from the corresponding tooling 8 on the assembly conveyor line 2, raising or lowering the corresponding tooling 8. The punch 53 is located below the assembly conveyor line 2 and is positioned opposite to the retaining ring 11 on the corresponding tooling 8. The punch drive 54 is mounted on the frame 1 by screwing or welding and is connected to the punch 53 in a transmission manner. The punch drive 54 is used to drive the punch 53 to move toward or away from the retaining ring 11, so that the punch 53 is placed inside the housing 13 to lift the handle 14, retaining ring 11 and housing 13 or to release the handle 14, retaining ring 11 and housing 13. It can be seen that when the assembly conveyor line 2 conveys the tooling 8, which is equipped with the handle 14, retaining ring 11 and housing 13, to the riveting device 5 for riveting, firstly, the support plate drive 56 drives the support plate 55 to move toward the tooling 8, so as to lift the tooling 8 away from the assembly conveyor line 2. Secondly, the riveting block drive 52 drives the riveting block 51 to move toward the tooling 8. Simultaneously, the punch drive 54 drives the punch 53 to move towards the snap ring 11, so that the punch 53 is placed inside the housing 13, pushing the handle 14, snap ring 11, and housing 13 towards the riveting block 51. This, in conjunction with the downward-pressing riveting block 51, creates a bidirectional clamping force, riveting the handle 14, snap ring 11, and housing 13 together, completing the handle assembly. Next, the riveting block drive 52 drives the riveting block 51 back to its original position, while the punch drive 54 also drives the punch 53 back to its original position, releasing the finished handle. Finally, the support plate drive 56 drives the support plate 55 back to its original position, bringing the tooling 8 back to the assembly conveyor line 2. Thus, by lifting the support plate 55, the corresponding tooling 8 can be stably supported, preventing the tooling 8 from moving with the assembly conveyor line 2 during riveting, which would affect the riveting effect. This provides a stable reference surface for riveting and avoids the vibration of the assembly conveyor line 2 caused by riveting, which would affect the assembly accuracy of other devices. Through the coordinated action of the riveting block 51 and the punch 53, the force on each component of the handle 14, the retaining spring 11 and the housing 13 is even and fully adhered, effectively solving the problem of incomplete riveting and loosening that may occur when applying pressure in one direction. This further ensures the tightness of the finished handle structure and improves the quality of the finished handle.

[0062] The aforementioned riveting block drive 52, punch drive 54, and support plate drive 56 can all utilize existing light-load drive structures such as pneumatic cylinders and small stepper motor-screw modules. The aforementioned punch 53 can utilize existing tungsten carbide punches, irregularly shaped punches, or other punch components. The aforementioned support plate 55 can utilize flat support plates, contoured groove support plates, or other support components. The aforementioned riveting block 51 is connected to the output end of the riveting block drive 52 via screwing or snap-fit ​​connections. The aforementioned punch 53 is connected to the output end of the punch drive 54 via screwing or snap-fit ​​connections. The aforementioned support plate 55 is connected to the output end of the support plate drive 56 via screwing or snap-fit ​​connections.

[0063] See Figure 2 and Figure 5 Based on the above embodiments, the tooling 8 is provided with limiting through holes 82, and the support plate 55 is fixed with at least two limiting posts 57 by welding or integral connection. The number of limiting posts 57 and limiting through holes 82 are the same, and their positions are set one-to-one. The limiting posts 57 are inserted into the corresponding limiting through holes 82 of the corresponding tooling 8 to limit the position of the corresponding tooling 8 in the horizontal direction. It can be seen that when the support plate driving component 56 drives the support plate 55 to move toward the corresponding tooling 8, the at least two limiting posts 57 on the support plate 55 are aligned with the limiting through holes 82 on the tooling 8 and are inserted into the corresponding limiting through holes 82 as the support plate 55 rises. In the horizontal and vertical directions, the insertion and engagement of the limiting posts 57 and the limiting through holes 82 directly restricts the movement of the tooling 8 in the horizontal direction (including movement along any horizontal direction or rotation around the vertical direction). In this way, through the cooperation of at least two limiting posts 57 and limiting through holes 82, a stable reference surface can be provided for riveting, ensuring the stability of riveting and further improving the assembly quality of the handle.

[0064] See Figure 2 and Figure 6Based on the above embodiment, at least two punches 53 are provided, and the punches 53 are arranged in a ring with equal intervals. The fixture 8 includes a feeding rod 83, which is used for stacking the snap ring 11, torsion spring 12, housing 13, and handle 14, and ensuring that the snap ring 11, torsion spring 12, housing 13, and handle 14 are on the same axis on the fixture 8. The fixture 8 is also provided with punch through holes 81, which are arranged in a ring with equal intervals around the feeding rod 83. The number of punch through holes 81 is the same as the number of punches 53, and their positions are arranged one-to-one. The punch through holes 81 are used for the corresponding punches 53 to pass through. It can be seen that the feeding rod 83 can be used as a plotting point for placing the snap ring 11, torsion spring 12, housing 13, and handle 14 on the fixture 8, while ensuring that the above workpieces are on the same axis on the fixture 8, while the punch through holes 81 play a role in making way. Thus, when the tooling 8 moves to the riveting device, each punch 53 can simultaneously penetrate the corresponding punch through hole 81 on the tooling 8, and while abutting against the retaining spring 11 inside the housing 13, push the retaining spring 11, housing 13 and handle 14 sleeved on the feeding rod 83. At this time, since each punch 53 is distributed in a ring at equal intervals around the feeding rod 83, it can push the workpiece simultaneously from multiple points, so that the workpiece is evenly stressed. This effectively prevents the handle 14, retaining spring 11 and housing 13 from shaking due to uneven stress, which could lead to problems such as misalignment of retaining spring 11 and poor fit between handle 14 and housing 13. This further improves the riveting quality and can also effectively prevent the retaining spring 11 from deforming due to excessive local stress, further improving the handle assembly quality.

[0065] The aforementioned material feeding rod is fixed to the tooling 8 by welding or integral connection.

[0066] See Figure 3In one embodiment of the snap ring feeding device 6, the snap ring feeding device 6 includes a lower punch sleeve 61, a lower punch sleeve drive member 62, a conical punch 63, and an elastic rotary mechanism 64. The conical punch 63 is located on the assembly conveyor line 2 and is used for the snap ring 11 to be fitted. The lower punch sleeve 61 is located above the conical punch 63 and is coaxially arranged with the conical punch 63. The lower punch sleeve drive member 62 is mounted on the frame 1 by screwing or welding and is drively connected to the lower punch sleeve 61. The lower punch sleeve drive member 62 is used to drive the lower punch sleeve 61 to move towards or away from the conical punch 63, so as to drive the conical punch 63 to connect with the corresponding tooling 8, and to drive the snap ring 11 fitted on the conical punch 63 to slide along the conical punch 63 to the corresponding tooling 8 and deform outwards. The elastic rotary mechanism 64 is mounted on the frame 1 by screwing or welding and is engaged with the conical punch 63. The elastic rotary mechanism has an elastic force that drives the conical punch 63 to move towards the lower punch sleeve 61. It can be seen that during the assembly of the retaining ring 11, firstly, the retaining ring 11 is sleeved on the conical punch 63. Secondly, the lower punch sleeve drive member 62 drives the lower punch sleeve 61 to move towards the corresponding fixture 8, so that the conical punch 63, which is coaxial with it, overcomes the elastic force of the elastic rotary mechanism 64 and moves onto the fixture 8, causing the retaining ring 11 sleeved on the conical punch 63 to slide along the conical punch 63 onto the corresponding fixture 8, while simultaneously deforming outwards. Finally, the lower punch sleeve drive member 62 drives the lower punch sleeve 61 to move away from the fixture 8, releasing the conical punch 63, which then moves back to its original position towards the lower punch sleeve 61 under the elastic action of the elastic rotary mechanism 64. Thus, by driving the lower punch sleeve 61 with the punching force of the lower punch sleeve drive component 62 and guiding the tapered surface of the tapered punch 63, the retaining spring 11 can be evenly expanded outward along the tapered surface shape, so that the shape and size of the retaining spring 11 after expansion are completely uniform. And by guiding the tapered punch 63, the retaining spring 11 can be accurately moved onto the tooling 8, avoiding the situation where the retaining spring 11 cannot be moved onto the tooling 8 due to irregular deformation when manually expanding the retaining spring 11, loosening and falling off after assembly, and the retaining spring 11 breaking, further ensuring the accuracy of handle assembly.

[0067] The aforementioned lower punch 61 can be operated using existing benchtop lower punches or Japanese-style lower punches. The aforementioned lower punch drive 62 can use existing light-load drive structures such as pneumatic cylinders or small stepper motor-screw modules. The aforementioned tapered punch 63 can use existing irregularly shaped punches, guide punches, or other punch components. The aforementioned elastic rotary mechanism 64 can use positioning rotary mechanisms such as ratchet-pawl rotary mechanisms, swing arm rotary mechanisms, or indexing plate rotary mechanisms. The aforementioned lower punch 61 is connected to the output end of the lower punch drive 62 by means of screwing or snap-fitting.

[0068] See Figure 4In one embodiment of the torsion spring tightening device 7, the torsion spring tightening device 7 includes a tightening block 71, a positioning post 72, a tightening block drive 73, and a lifting drive 74. The lifting drive 74 is mounted on the frame 1 by means of screwing or welding. The tightening block drive 73 is mounted on the output end of the lifting drive 74 by means of screwing or snapping and is connected to the tightening block 71 in a transmission manner. The tightening block 71 is positioned opposite to the torsion spring 12 on the tooling 8. The positioning post 72 is mounted on the tightening block 71 by means of welding or integral connection. The lifting drive 74 is used to drive the tightening block drive 73 to face or turn away from the assembly conveyor line 2, so that the positioning post 72 inserts into or disengages from the hook at one end of the torsion spring 12. The tightening block drive 73 is used to drive the tightening block 71 to rotate. The tightening block 71 drives the positioning post 72 to rotate synchronously around the central axis of the tightening block 71, so as to drive the hook at one end of the torsion spring 12 to rotate around the central axis of the tightening block 71 into the housing 13. As can be seen, when the torsion spring 12 is fed, firstly, the lifting drive 74 drives the tightening block drive 73 to move towards the assembly conveyor line 2, so that the positioning post 72 on the tightening block 71 approaches the torsion spring 12 on the tooling 8, thereby making precise insertion and engagement between the positioning post 72 and the inner circumferential contour of the hook at one end of the torsion spring 12. Secondly, the tightening block drive 73 drives the tightening block 71 to rotate, and the tightening block 71 simultaneously drives the positioning post 72 to rotate around the central axis of the tightening block 71, so that the hook at one end of the torsion spring 12 rotates around the central axis of the tightening block 71 and retracts into the housing 13, completing the feeding of the torsion spring 12. Finally, the lifting drive 74 drives the tightening block drive 73 to move away from the assembly conveyor line 2, so that the positioning post 72 on the tightening block 71 disengages from the hook at one end of the torsion spring 12. In this way, the torsion spring tightening device 7 can completely screw the torsion spring 12 into the housing 13, avoiding the problem of time-consuming overcoming of the rebound force and difficulty in ensuring complete insertion into the housing during manual assembly, further improving the efficiency of handle assembly.

[0069] Both the aforementioned tightening block drive 73 and lifting drive 74 can utilize existing light-load drive structures such as pneumatic cylinders and small stepper motor-screw modules. The tightening block is connected to the output end of the tightening block drive 73 via screwing or snap-fit ​​connections.

[0070] See Figure 1 and Figure 6In one embodiment of the handle assembly equipment, the assembly conveyor line 2 has a closed-loop structure. The handle assembly equipment also includes a material handling mechanism 9 and a material handling conveyor line 10. The material handling mechanism 9 is located on one side of the assembly conveyor line 2 by means of screwing or welding, and is downstream of the riveting device 5. The material handling conveyor line 10 is located on the frame 1 by means of screwing or welding, and is located on one side of the assembly conveyor line 2. The material handling mechanism 9 is used to move the finished handle on the corresponding tooling 8 to the material handling conveyor line 10 to prevent the finished handle on the corresponding tooling 8 from moving along the assembly conveyor line 2, so that the empty corresponding tooling 8 can continue to move along the assembly conveyor line 2. The material handling conveyor line 10 is used to transport the finished handle. It can be seen that after the handle is assembled, firstly, the assembly conveyor line 2 transports the tooling 8 containing the finished handle to the material handling mechanism 9. Secondly, the material handling mechanism 9 grabs the finished handle on the tooling 8 and moves it to the material handling conveyor line 10 to prevent the finished handle on the corresponding tooling 8 from continuing to move along the assembly conveyor line 2 into the next assembly cycle. Finally, the unloading conveyor 10 transports the finished handles out, while the assembly conveyor 2 sends the empty tooling 8 into the next assembly cycle. Thus, through the cooperation of the unloading and handling mechanism 9 and the unloading conveyor 10, the finished handles on the assembly conveyor 2 can be removed in a timely manner, preventing them from affecting the next round of assembly work as they circulate with the assembly conveyor 2. It also facilitates ensuring that the assembly conveyor 2 returns the tooling 8 with the removed handles to the assembly starting point, thereby improving the utilization rate of the tooling 8.

[0071] The aforementioned unloading and handling mechanism 9 can use existing pneumatic gripper-type robotic arms or vacuum suction cup adsorption mechanisms for handling operations. The aforementioned unloading conveyor line 10 can use existing sliding rail conveyors, conveyor belt conveyors, and chain conveyor systems for operation.

[0072] Although the present invention has been described with reference to several typical embodiments, it should be understood that the terminology used is descriptive and exemplary, and not restrictive. Since the present invention can be embodied in many forms without departing from the spirit or essence of the invention, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope defined by the appended claims. Therefore, all variations and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A handle assembly device, characterized in that, include: frame; An assembly conveyor line and several tooling fixtures are provided. The assembly conveyor line is located on the frame and is used to transport the tooling fixtures. The tooling fixtures are located on the assembly conveyor line and are used to place and limit the retaining rings and the housing. The snap ring feeding device, the first workpiece pre-positioning device, the torsion spring tightening device, the second workpiece pre-positioning device, and the riveting device are all mounted on the frame and arranged sequentially along the conveying direction of the assembly conveyor line. The spring clip feeding device is used to transfer the spring clip to the corresponding tooling; the first workpiece pre-setting device is used to move the torsion spring and the housing to the corresponding tooling; the torsion spring tightening device is used to transfer the torsion spring into the housing on the corresponding tooling; the second workpiece pre-setting device is used to move the handle to the housing on the corresponding tooling; and the riveting device is used to rivet the handle, the spring clip, and the housing together.

2. The handle assembly device according to claim 1, characterized in that, The riveting device includes: The riveting block and the riveting block drive are provided. The riveting block is located above the assembly conveyor line and is positioned opposite to the snap ring on the corresponding tooling. The riveting block drive is located on the frame and is connected to the riveting block for transmission. The riveting block drive is used to drive the riveting block to move toward or away from the corresponding tooling on the assembly conveyor line, thereby pressing down or releasing the workpiece on the corresponding tooling. A support plate and a support plate drive component are provided. The support plate is located below the assembly conveyor line and is positioned opposite to the corresponding tooling. The support plate drive component is located below the frame and is connected to the support plate in a transmission manner. The support plate drive component is used to drive the support plate to move towards or away from the corresponding tooling on the assembly conveyor line, so as to raise or lower the corresponding tooling. A punch and a punch drive are provided. The punch is located below the assembly conveyor line and is positioned opposite to the snap ring on the corresponding tooling. The punch drive is located on the frame and is connected to the punch in a transmission manner. The punch drive is used to drive the punch to move toward or away from the snap ring position, so that the punch is placed in the housing to lift the handle, the snap ring and the housing or to release the handle, the snap ring and the housing.

3. The handle assembly device according to claim 2, characterized in that, The tooling is provided with limiting through holes, and at least two limiting posts are fixed on the support plate. The number of limiting posts is the same as the number of limiting through holes, and their positions are set in a one-to-one correspondence. The limiting posts are inserted into the corresponding limiting through holes of the tooling to limit the position of the tooling in the horizontal direction.

4. The handle assembly device according to claim 2, characterized in that, At least two punches are provided, and the punches are arranged in a ring with equal intervals. The tooling includes a feeding rod, which is used for stacking the retaining spring, the torsion spring, the housing, and the handle, and for positioning the retaining spring, the torsion spring, the housing, and the handle on the tooling along the same axis. The tooling is also provided with punch through holes, which are arranged in a ring with equal intervals around the feeding rod. The number of punch through holes is the same as the number of punches, and their positions correspond one-to-one. The punch through holes are used for the corresponding punches to pass through.

5. A handle assembly device according to any one of claims 1-4, characterized in that, The snap ring feeding device includes: A tapered punch is provided on the assembly conveyor line and is used for the snap ring to be sleeved; The lower punch sleeve and the lower punch sleeve drive are provided. The lower punch sleeve is disposed above the tapered punch and is coaxially arranged with the tapered punch. The lower punch sleeve drive is disposed on the frame and is connected to the lower punch sleeve in a transmission manner. The lower punch sleeve drive is used to drive the lower punch sleeve to move toward or away from the tapered punch, so as to drive the tapered punch to connect with the corresponding tooling, and to drive the retaining spring sleeved on the tapered punch to slide along the tapered punch to the corresponding tooling and to deform outward. An elastic rotary mechanism is mounted on the frame and engages with the conical punch. The rotary mechanism has an elastic force that drives the conical punch to move toward the lower punch sleeve.

6. A handle assembly device according to any one of claims 1-4, characterized in that, The torsion spring tightening device includes: a lifting drive, a tightening block, a positioning post, and a tightening block drive. The lifting drive is mounted on the frame, and the tightening block drive is mounted on the output end of the lifting drive and is connected to the tightening block in a transmission manner. The tightening block is positioned opposite to the torsion spring on the tooling, and the positioning post is mounted on the tightening block. The lifting drive is used to drive the tightening block drive towards or away from the assembly conveyor line, so that the positioning post is inserted into or disengaged from the hook at one end of the torsion spring. The tightening block drive is used to drive the tightening block to rotate. The tightening block drives the positioning post to rotate synchronously around the central axis of the tightening block, so as to drive the hook at one end of the torsion spring to rotate around the central axis of the tightening block into the housing.

7. A handle assembly device according to any one of claims 1-4, characterized in that, The assembly conveyor line has a closed-loop structure, and the handle assembly equipment further includes: The material handling mechanism is located on one side of the assembly conveyor line and downstream of the riveting device; The unloading conveyor line is mounted on the frame and located on one side of the assembly conveyor line; The unloading and conveying mechanism is used to move the finished handle on the corresponding tooling to the unloading conveyor line to prevent the finished handle on the corresponding tooling from moving along the assembly conveyor line, so that the empty corresponding tooling can continue to move along the assembly conveyor line. The unloading conveyor line is used to transport the finished handle.

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