Automatic assembly machine for door lock handle

Abstract

The application relates to a door lock handle automatic assembly machine, which comprises a rack, a tool circulating mechanism, a tool clamp, a clasp spring feeding mechanism, a metal gasket feeding mechanism, an angular limit snap ring feeding mechanism, a torsional spring feeding mechanism, a gasket feeding mechanism, a clasp spring assembly mechanism, a metal gasket assembly mechanism, an angular limit snap ring assembly mechanism, a torsional spring assembly mechanism, a torsional spring torsion force storage mechanism and a door handle press fitting mechanism; the application has the effects of automatically assembling door lock handle parts, greatly reducing manual labor, and high assembly efficiency and good product assembly quality.

Description

Technical Field

[0001] This application relates to the field of door lock assembly technology, and in particular to an automatic door lock handle assembly machine. Background Technology

[0002] Door handles are an indispensable part of door panels, not only facilitating opening and closing but also serving a decorative purpose. Door handle designs on the market exhibit diverse forms, particularly in the unique designs of the handles and panels. However, core components such as spring clips, corner limit blocks, torsion springs, and washers tend to be standardized, being essential parts for door handle assembly.

[0003] As attached Figure 1 As shown, the door handle includes a door handle a, a washer b, a cover c, a torsion spring d, a corner limiting piece e, a washer f, and a retaining spring g arranged in sequence. The torsion spring d includes an outer limiting end d1 that engages with the cover c and an inner limiting end d2 that engages with the door handle a. The traditional door lock handle assembly process usually involves some manual operation. The door handle is placed on a specially designed positioning fixture, and then the parts are added one by one. Finally, the retaining spring is manually clamped onto the positioning shaft of the door handle a. The above assembly method requires a lot of manpower, which not only reduces the assembly efficiency, but also the manual pressing can cause the retaining spring to be in a non-standard position on the positioning shaft and in an incorrect assembly posture, which can easily lead to quality problems in the door lock handles assembled later. Summary of the Invention

[0004] This application provides an automatic door lock handle assembly machine, which automatically assembles door lock handle components, greatly reducing manual labor, and achieving high assembly efficiency and good product assembly quality.

[0005] The automatic assembly machine for door lock handles provided in this application adopts the following technical solution: An automatic door lock handle assembly machine includes a frame, a tooling circulation mechanism that operates intermittently at equal intervals, several tooling fixtures mounted on the tooling circulation mechanism for loading door lock handle components, a snap ring feeding mechanism for automatically arranging and conveying snap rings, a metal gasket feeding mechanism for automatically arranging and conveying metal gaskets, a corner limiting snap ring feeding mechanism for automatically arranging and conveying corner limiting snap rings, a torsion spring feeding mechanism for automatically arranging and conveying torsion springs, and snap ring assembly mechanisms, metal gasket assembly mechanisms, corner limiting snap ring assembly mechanisms, and torsion spring assembly mechanisms arranged sequentially around the tooling circulation mechanism. The mechanism includes a torsion spring torsion energy storage mechanism and a door handle pressing mechanism; the snap ring assembly mechanism is used to assemble the snap ring at the discharge end of the snap ring feeding mechanism onto the tooling fixture; the metal gasket assembly mechanism is used to assemble the metal gasket at the discharge end of the metal gasket feeding mechanism onto the upper end of the snap ring on the tooling fixture; the angular limiting snap ring assembly mechanism is used to assemble the angular limiting snap ring at the discharge end of the angular limiting snap ring assembly mechanism onto the upper end of the metal gasket on the tooling fixture; the torsion spring assembly mechanism is used to assemble the torsion spring at the discharge end of the torsion spring feeding mechanism onto the upper end of the angular limiting snap ring on the tooling fixture; the... The torsion spring torsion storage mechanism is used to torsion the torsion spring on the tooling fixture into a stored state; the door handle pressing mechanism is used to assemble the door lock handle component onto the door handle when the door handle is pressed against the tooling fixture; the tooling fixture includes a fixed base mounted on the tooling circulation mechanism, a sleeve shaft slidably mounted on the fixed base for temporarily storing the door lock handle component, and a positioning pin connected to the sleeve shaft and used to clamp the outer limit end of the torsion spring when the torsion spring on the sleeve shaft is torsionally stored by the torsion spring torsion storage mechanism. A positioning groove is provided on the axial surface of the sleeve shaft when the torsion spring is assembled. When the sleeve shaft is in place, the inner limiting end of the torsion spring is engaged in the positioning groove; the door handle pressing mechanism includes a material removal drive unit mounted on the frame, a door handle pre-tightening drive unit mounted on the material removal drive unit, and a tensioning unit mounted on the central axis of the sleeve shaft for locking / relaxing the door handle; the door handle pre-tightening drive unit acts on the tensioning unit to switch the door handle above the sleeve shaft to a locked / relaxed state; the material removal drive unit acts on the sleeve shaft to make it slide back and forth on the fixed seat and assemble the door lock handle component on the sleeve shaft onto the door handle.

[0006] Preferably, the tensioning unit includes a central axis slide rod, a central axis fixing rod, and a convex base fixedly connected to one end of the central axis slide rod; one end of the central axis fixing rod is fixedly inserted into the sleeve rod, and a plurality of petal rods are spaced apart at the other end of the central axis fixing rod; the other end of the central axis slide rod is provided with an umbrella-shaped inverted platform; the central axis slide rod is slidably installed at the central axis of the central axis fixing rod and passes through the central axis fixing rod; the door handle pre-tensioning drive unit can drive the central axis slide rod to slide within the central axis fixing rod and open the plurality of petal rods relative to each other.

[0007] Preferably, an elastic reset element is provided between the fixed seat and the sleeve shaft.

[0008] Preferably, the snap ring assembly mechanism includes a snap ring pre-assembly seat mounted on the frame, a snap ring horizontal pusher, a snap ring vertical presser, a snap ring support cylinder, and a snap ring transfer cylinder. The snap ring pre-assembly seat includes a pre-assembly frustum portion designed in a frustum shape. The snap ring horizontal pusher is used to push the snap ring from the discharge end of the snap ring feeding mechanism to the top of the pre-assembly frustum portion of the snap ring pre-assembly seat. The snap ring transfer cylinder is connected to the snap ring pre-assembly seat and reciprocates between the upper end of the sleeve shaft and the feeding end of the snap ring horizontal pusher. The snap ring vertical presser is located above the pre-assembly frustum portion and assembles the snap ring sleeved on the pre-assembly frustum portion onto the sleeve shaft. During snap ring assembly, the snap ring support cylinder acts on the lower end of the sleeve shaft.

[0009] Preferably, the metal pad assembly mechanism includes a horizontal moving part for metal pads mounted on the frame, a vertical moving part for metal pads mounted on the horizontal moving part for metal pads, and a metal pad finger cylinder mounted on the vertical moving part for picking up metal pads from the discharge end of the metal pad feeding mechanism and assembling them onto the sleeve shaft.

[0010] Preferably, the corner limiting retaining ring feeding mechanism includes a corner limiting retaining ring storage rod, a corner limiting retaining ring upward moving drive component mounted on the frame, a top plate connected to the corner limiting retaining ring upward moving drive component, and a corner limiting retaining ring sensor installed at the end of the corner limiting retaining ring storage rod for sensing whether there is a corner limiting retaining ring at the uppermost end of the corner limiting retaining ring storage rod. The corner limiting retaining ring sensor is electrically connected to the corner limiting retaining ring upward moving drive component. The corner limiting retaining ring assembly mechanism reciprocates between the upper end of the corner limiting retaining ring storage rod and the sleeve shaft rod.

[0011] Preferably, the corner limiting clasp assembly mechanism includes a corner limiting clasp horizontal moving component mounted on the frame, a corner limiting clasp vertical moving component mounted on the corner limiting clasp horizontal moving component, and a corner limiting clasp clamping claw mounted on the corner limiting clasp vertical moving component for picking up the corner limiting clasp at the discharge end of the corner limiting clasp feeding mechanism and assembling it onto the sleeve shaft.

[0012] Preferably, the torsion spring assembly mechanism includes a torsion spring horizontal moving component mounted on the frame, a torsion spring vertical moving component mounted on the torsion spring horizontal moving component, and a torsion spring clamping claw mounted on the torsion spring vertical moving component for picking up the torsion spring at the discharge end of the torsion spring feeding mechanism and assembling it onto the sleeve shaft.

[0013] Preferably, the torsion spring torsion energy storage mechanism includes a vertical drive unit mounted on the frame, an energy storage rotary motor mounted on the vertical drive unit, a force-limiting block mounted on the output shaft of the energy storage rotary motor, and a top pin drive component mounted on the frame. The energy storage rotary motor drives the force-limiting block to rotate and acts on one end of the torsion spring to convert the torsion spring into an energy storage state. The top pin drive component is used to drive the positioning pin to move towards the force-limiting block and to make the torsion spring abut against the positioning pin at one end of the sleeve shaft.

[0014] Preferably, it also includes a washer feeding mechanism with automatic arrangement of conveyor handle washers.

[0015] In summary, this application includes at least one of the following beneficial technical effects: The door lock handle components are placed into the corresponding feeding / supplying mechanisms to achieve automatic feeding of the door lock handle components; then, through the snap ring assembly mechanism, metal washer assembly mechanism, corner limit snap ring assembly mechanism, torsion spring assembly mechanism, and torsion spring torsion storage mechanism, snap ring assembly station, metal washer assembly station, corner limit snap ring station, torsion spring station, and torsion spring torsion storage station are formed, realizing the automatic sequential assembly of snap ring, metal washer, corner limit snap ring, and torsion spring, as well as the torsion spring storage process; finally, the door handle is applied to the discharge end of the washer feeding mechanism to assemble a single washer onto the door handle. The positioning shaft of the door handle is aligned with the sleeve rod and fixed above the sleeve rod by the tensioning unit. Then, the material removal drive unit acts on the sleeve rod, causing the sleeve rod to slide down into the fixed seat. Under the limiting action of the end face of the fixed seat, the door lock handle parts on the sleeve rod are smoothly moved and assembled onto the positioning shaft of the door handle. Through the coordination between the feeding mechanism / material supply mechanism and the assembly mechanism, the door lock handle parts are automatically assembled, greatly reducing manual labor, and achieving high assembly efficiency and good product assembly quality. The snap ring is pushed from the discharge end of the snap ring feeding mechanism to the pre-installation frustum of the snap ring pre-installation seat by the snap ring horizontal pusher. Since the upper port diameter of the pre-installation frustum is smaller than the snap ring diameter, the snap ring falls to the middle position of the pre-installation frustum due to gravity. Then, the snap ring transfer cylinder drives the snap ring pre-installation seat to move down and align the lower end of the pre-installation frustum with the upper end of the sleeve shaft. At this time, the snap ring support cylinder drives and acts on the lower end of the sleeve shaft, stabilizing the sleeve shaft on the fixed seat. Finally, the snap ring sleeved on the pre-installation frustum is assembled onto the sleeve shaft by the snap ring vertical pressing component, completing the purpose of assembling the snap ring from the discharge end of the snap ring feeding mechanism onto the tooling fixture. By stacking the corner retaining rings one by one onto the corner retaining ring storage rod, when the corner retaining rings are feeding, the top plate is gradually driven to move upward by the corner retaining ring upward drive component, so that the top of the corner retaining ring storage rod always has a corner retaining ring that is sensed by the corner retaining ring sensor. The corner retaining ring assembly mechanism reciprocates between the upper end of the corner retaining ring storage rod and the sleeve shaft rod, so that the corner retaining rings are continuously fed and picked up by the corner retaining ring assembly mechanism. An edge-limiting retaining ring is mounted on a horizontal moving part of a horizontal moving part, along with an edge-limiting retaining ring correction vertical moving part and an edge-limiting retaining ring correction rotary motor. The rotary motor's rotating shaft is connected to an edge-limiting retaining ring correction gripper. When the edge-limiting retaining ring is reversed, the edge-limiting retaining ring correction rotary motor is driven by the edge-limiting retaining ring correction vertical moving part to move towards the edge-limiting retaining ring storage rod. At this time, the edge-limiting retaining ring correction gripper clamps the edge-limiting retaining ring on the edge-limiting retaining ring storage rod, causing it to rotate 180° before being placed back on the edge-limiting retaining ring storage rod, waiting for the edge-limiting retaining ring clamping gripper to pick it up. This improves the applicability of the edge-limiting retaining ring assembly mechanism. The torsion spring clamping jaws are connected to a torsion spring correction rotary motor. When the torsion spring is reversed, the torsion spring clamping jaws can be rotated 180° by the torsion spring correction rotary motor before the torsion spring is assembled onto the upper end of the corner limit ring on the tooling fixture, thereby improving the applicability of the torsion spring assembly mechanism. The power storage rotary motor drives the force-limiting block to rotate and acts on the outer limit end of the torsion spring, causing the torsion spring to switch to a power storage state. After the torsion spring torsion storage mechanism stores the torsion spring on the sleeve shaft, the top pin drive drives the positioning pin to move towards the force-limiting block and clamps the outer limit end of the torsion spring onto the positioning pin. At this time, the positioning pin is fixed to the fixed seat under the action of the torsion spring, and positions the torsion spring on the sleeve shaft as a power storage state, thus achieving the effect of rapid torsion storage of the torsion spring and stable maintenance of the power storage state. The door handle pre-tightening drive unit acts on the convex base and pulls it down, causing the central axis slide rod to slide inside the central axis fixed rod. This causes several petal rods to open up to each other under the contact of the umbrella-shaped inverted platform, achieving the purpose of aligning the door handle with the sleeve shaft rod and fixing it above the sleeve shaft rod. Then, the material removal drive unit acts on the sleeve shaft rod, causing the sleeve shaft rod to slide down on the fixed seat into the fixed seat. At this time, the tensioning unit moves the door handle down synchronously with the sleeve shaft rod. Under the limiting action of the fixed seat end face, the door lock handle components on the sleeve shaft rod are smoothly moved and assembled onto the door handle. Attached Figure Description

[0016] Figure 1 This is an exploded view of the door lock handle; Figure 2 This is a structural diagram of an automatic door lock handle assembly machine; Figure 3 This is a top view of an automatic door lock handle assembly machine; Figure 4 This is a structural diagram of the tooling fixture; Figure 5 This is a structural diagram of the tooling fixture and door handle pressing mechanism; Figure 6 This is a sectional view of the locating pin axis in the tooling fixture; Figure 7 This is an exploded view of a portion of the structure of the bushing and the tensioning unit; Figure 8 This is a schematic diagram of the snap ring assembly mechanism; Figure 9 This is a schematic diagram of the metal gasket assembly mechanism; Figure 10 This is a structural diagram of the corner limiting clasp feeding mechanism and the corner limiting clasp assembly mechanism; Figure 11 This is a schematic diagram of the corner-limiting retaining ring feeding mechanism; Figure 12 This is a structural schematic diagram of the corner-limiting retaining ring assembly mechanism; Figure 13 This is a structural schematic diagram of the torsion spring feeding mechanism and the torsion spring assembly mechanism; Figure 14 This is a schematic diagram of the torsion spring torsion energy storage mechanism.

[0017] Explanation of reference numerals in the attached drawings: a, door handle; b, washer; c, cover; d, torsion spring; d1, outer limit end; d2, inner limit end; e, corner limit piece; f, gasket; g, snap ring; 1, frame; 11, tooling circulation mechanism; 2, tooling fixture; 21, fixed seat; 211, limit groove; 22, sleeve shaft; 221, limit seat; 222, positioning groove; 223, stripper seat; 23, positioning pin; 231, limit ring; 24, elastic reset component; 3, snap ring feeding mechanism; 31, snap ring assembly mechanism; 32, snap ring pre-installation seat; 321. Pre-assembled frustum section; 33. Horizontal pusher for retaining springs; 34. Vertical presser for retaining springs; 35. Retaining spring support cylinder; 36. Retaining spring transfer cylinder; 4. Metal gasket feeding mechanism; 41. Metal gasket assembly mechanism; 42. Horizontal moving part for metal gaskets; 43. Vertical moving part for metal gaskets; 44. Metal gasket finger cylinder; 5. Corner limiting retaining ring feeding mechanism; 51. Corner limiting retaining ring storage rod; 52. Corner limiting retaining ring upward moving drive; 53. Top plate; 54. Corner limiting retaining ring sensor; 55. Corner limiting retaining ring. 56. Horizontal moving part of the corner limiting circlip; 57. Vertical moving part of the corner limiting circlip; 58. Corner limiting circlip clamping claw; 59. Corner limiting circlip correction unit; 591. Vertical moving part of the corner limiting circlip correction; 592. Rotary motor of the corner limiting circlip correction; 593. Clamping claw of the corner limiting circlip correction; 6. Torsion spring feeding mechanism; 61. Torsion spring assembly mechanism; 62. Horizontal moving part of the torsion spring; 63. Vertical moving part of the torsion spring; 64. Clamping claw of the torsion spring; 65. Rotary motor of the torsion spring correction; 7. Washer feeder Structure; 8. Torsion spring torsion storage mechanism; 81. Vertical drive unit; 82. Storage rotary motor; 83. Force limiting block; 84. Top pin drive component; 9. Door handle pressing mechanism; 91. Unloading drive unit; 911. Unloading cylinder; 912. Vertical slide; 913. Unloading claw; 92. Door handle pre-tightening drive unit; 921. Pre-tightening cylinder; 922. Pre-tightening claw; 93. Tightening unit; 931. Central shaft slide rod; 932. Central shaft fixing rod; 933. Convex base; 934. Petal rod; 935. Umbrella-shaped tilting platform. Detailed Implementation

[0018] The present application will be further described in detail below with reference to the accompanying drawings.

[0019] This application discloses an automatic door lock handle assembly machine.

[0020] Reference Figure 2 , Figure 3The automatic door lock handle assembly machine includes a frame 1, a tooling circulation mechanism 11 that operates intermittently at equal intervals, several tooling fixtures 2 mounted on the tooling circulation mechanism 11 for loading door lock handle parts, a snap ring feeding mechanism 3 that automatically arranges and conveys snap rings, a metal gasket feeding mechanism 4 that automatically arranges and conveys metal gaskets, a corner limiting snap ring feeding mechanism 5 that automatically arranges and conveys corner limiting snap rings, a torsion spring feeding mechanism 6 that automatically arranges and conveys torsion springs, a gasket feeding mechanism 7 that automatically arranges and conveys handle washers, and snap ring assembly mechanism 31, metal gasket assembly mechanism 41, corner limiting snap ring assembly mechanism 55, torsion spring assembly mechanism 61, torsion spring torsion storage mechanism 8, and door handle pressing mechanism 9, which are sequentially arranged around the tooling circulation mechanism 11.

[0021] Among them, the snap ring assembly mechanism 31 is used to assemble the snap ring at the discharge end of the snap ring feeding mechanism 3 onto the tooling fixture 2; the metal gasket assembly mechanism 41 is used to assemble the metal gasket at the discharge end of the metal gasket feeding mechanism 4 onto the upper end of the snap ring on the tooling fixture 2; the corner limiting snap ring assembly mechanism 55 is used to assemble the corner limiting snap ring piece at the discharge end of the corner limiting snap ring assembly mechanism 55 onto the upper end of the metal gasket on the tooling fixture 2; the torsion spring assembly mechanism 61 is used to assemble the torsion spring at the discharge end of the torsion spring feeding mechanism 6 onto the upper end of the corner limiting snap ring on the tooling fixture 2; the torsion spring torsion storage mechanism 8 is used to torsion the torsion spring on the tooling fixture 2 into a storage state; and the door handle pressing mechanism 9 is used to assemble the door lock handle components onto the door handle when the door handle is pressed against the tooling fixture 2.

[0022] Specifically, the tooling circulation mechanism 11 is an existing technology structure, which includes a rotating surface and a rotary motor drive device for driving the rotating surface to circulate along a closed path at equal intervals. Several tooling fixtures 2 are arranged at intervals around the upper peripheral edge of the rotating surface. The rotating surface forms at least a snap ring assembly station, a metal gasket assembly station, a corner limiting snap ring station, a torsion spring station, a torsion spring torsion storage station, and a door handle pressing station around its periphery.

[0023] Reference Figures 3 to 7 The tooling fixture 2 includes a fixed base 21 fixedly installed on the rotating surface, a sleeve rod 22 slidably installed on the fixed base 21 for temporarily storing door lock handle parts, a positioning pin 23 that is slidably connected to the sleeve rod 22 at one end and is used to clamp the outer limit end of the torsion spring when the torsion spring on the sleeve rod 22 is torsionally charged by the torsion spring torsion storage mechanism 8, and an elastic reset member 24 installed between the fixed base 21 and the sleeve rod 22. The elastic reset member 24 can be a tension spring, a spring, or a torsion spring.

[0024] A positioning hole is provided on the fixed base 21, and one end of the positioning pin 23 slides through the positioning hole; a limiting seat 221 is fixedly connected to one end of the sleeve shaft 22, and the limiting seat 221 is located below the fixed base 21. In the initial state, the limiting seat 221 abuts against the lower end face of the fixed base 21 under the action of the elastic reset member 24; the other end of the positioning pin 23 slides through the limiting seat 221, a limiting ring 231 is provided at the middle section of the positioning pin 23, and a limiting groove 211 is provided on one end face of the fixed base 21. The diameter of the positioning groove 211 is larger than that of the positioning hole and is arranged coaxially with the positioning hole. The limiting ring 231 is limited to sliding within the limiting groove 211. In the initial state, the end of the positioning pin 23 is located in the positioning hole. A positioning groove 222 is provided on the axial surface of the sleeve rod 22, which can cooperate with the spindle hole at the end of the door handle shaft. When the torsion spring is assembled on the sleeve rod 22, the inner limiting end of the torsion spring is locked in the positioning groove 222. When the torsion spring is twisted into a storage state, the positioning pin 23 protrudes out of the fixing hole and the outer limiting end of the torsion spring is locked on the positioning pin 23.

[0025] Reference Figure 3 , Figure 7 The snap ring feeding mechanism 3, the metal gasket feeding mechanism 4, and the washer feeding mechanism 7 are all existing vibratory disc material feeding structures, which will not be described in detail here. The snap ring assembly mechanism 31 includes a snap ring pre-mounted seat 32, a snap ring horizontal pusher 33, a snap ring vertical presser 34, a snap ring support cylinder 35, and a snap ring transfer cylinder 36 mounted on the frame 1. The snap ring horizontal pusher 33 is a cylinder and a push plate structure mounted on the cylinder piston rod. The snap ring vertical presser 34 is a cylinder and a stamped sleeve structure mounted on the cylinder piston rod. The snap ring pre-mounted seat 32 includes a pre-mounted frustum 321 designed in the shape of a frustum. The snap ring transfer cylinder 36 is fixedly connected to the snap ring pre-mounted seat 32 and reciprocates between the upper end of the sleeve shaft 22 and the feeding end of the snap ring horizontal pusher 33.

[0026] In the snap ring assembly process, firstly, the snap ring horizontal pusher 33 pushes the snap ring from the discharge end of the snap ring feeding mechanism 3 to the top of the pre-installation frustum 321 of the snap ring pre-installation seat 32. Since the upper port diameter of the pre-installation frustum 321 is smaller than the snap ring diameter, the snap ring falls to the middle position of the pre-installation frustum 321 due to gravity. Then, the snap ring transfer cylinder 36 drives the snap ring pre-installation seat 32 to move down and aligns the lower end of the pre-installation frustum 321 with the upper end of the sleeve shaft 22. At this time, the snap ring support cylinder 35 drives and acts on the lower end of the sleeve shaft 22, stabilizing the sleeve shaft 22 on the fixed seat 21. Finally, the snap ring sleeved on the pre-installation frustum 321 is assembled onto the sleeve shaft 22 by the snap ring vertical pressing member 34, completing the purpose of assembling the snap ring from the discharge end of the snap ring feeding mechanism 3 onto the tooling fixture 2.

[0027] Reference Figure 3 , Figure 8The metal gasket assembly mechanism 41 includes a horizontal moving part 42 for metal gaskets mounted on the frame 1, a vertical moving part 43 for metal gaskets mounted on the horizontal moving part 42, and a metal gasket finger cylinder 44 mounted on the vertical moving part 43 for picking up the metal gaskets from the discharge end of the metal gasket feeding mechanism 4 and assembling them onto the sleeve shaft 22. The horizontal moving part 42 and the vertical moving part 43 are any one of the existing motor screw drive structure, reciprocating cylinder drive structure, or gear rack drive structure. Through the coordinated reciprocating motion of the horizontal moving part 42 and the vertical moving part 43 in the horizontal and vertical directions, the metal gasket finger cylinder 44 assembles the metal gaskets from the discharge end of the metal gasket feeding mechanism 4 onto the upper end of the snap ring on the tooling fixture 2.

[0028] Reference Figure 3 , Figures 9 to 11 The corner-limiting retaining ring feeding mechanism 5 includes a corner-limiting retaining ring storage rod 51, a corner-limiting retaining ring upward movement drive 52 mounted on the frame 1, a top plate 53 connected to the corner-limiting retaining ring upward movement drive 52, and a corner-limiting retaining ring sensor 54 installed at the end of the corner-limiting retaining ring storage rod 51 to sense whether there is a corner-limiting retaining ring at the uppermost end of the corner-limiting retaining ring; the corner-limiting retaining ring upward movement drive 52 can be any one of a motor screw drive structure, a cylinder structure, or a gear and rack drive structure, and the corner-limiting retaining ring sensor 54 and the corner-limiting retaining ring The driver in the upward moving drive 52 is electrically connected; by stacking the corner limiting rings one by one onto the corner limiting ring storage rod 51, when the corner limiting rings are feeding, the upward moving drive 52 gradually drives the top plate 53 to move upward, so that the uppermost end of the corner limiting ring storage rod 51 always has a corner limiting ring that is sensed by the corner limiting ring sensor 54, and the corner limiting ring assembly mechanism 55 reciprocates between the upper end of the corner limiting ring storage rod 51 and the sleeve rod 22, so that the corner limiting rings are continuously fed and picked up by the corner limiting ring assembly mechanism 55.

[0029] The corner limiting clasp assembly mechanism 55 includes a corner limiting clasp horizontal moving part 56 mounted on the frame 1, a corner limiting clasp vertical moving part 57 mounted on the corner limiting clasp horizontal moving part 56, and a corner limiting clasp clamping claw 58 mounted on the corner limiting clasp vertical moving part 57 for picking up the corner limiting clasp at the discharge end of the corner limiting clasp feeding mechanism 5 and assembling it on the sleeve shaft 22.

[0030] In another preferred embodiment, an angled retaining ring correction unit 59 is installed on the angled retaining ring horizontal moving part 56; the angled retaining ring correction unit 59 includes an angled retaining ring correction vertical moving part 591 installed on the angled retaining ring horizontal moving part 56, the angled retaining ring correction vertical moving part 591 is connected to an angled retaining ring correction rotary motor 592, and the rotation shaft of the angled retaining ring correction rotary motor 592 is connected to an angled retaining ring correction gripper 593; the angled retaining ring horizontal moving part 56, the angled retaining ring vertical moving part 57, and the angled retaining ring correction vertical moving part 591 are all any one of the existing motor screw drive structure, cylinder structure, or gear rack drive structure. When the corner limiting ring is reversed, the corner limiting ring correction vertical moving part 591 can drive the corner limiting ring correction rotary motor 592 to move towards the corner limiting ring storage rod 51. At this time, the corner limiting ring correction gripper 593 clamps the corner limiting ring on the corner limiting ring storage rod 51, causing it to rotate 180°, and then places it on the corner limiting ring storage rod 51, waiting for the corner limiting ring clamping claw 58 to clamp it, thus improving the applicability of the corner limiting ring assembly mechanism 55.

[0031] Reference Figure 3 , Figure 12 The torsion spring feeding mechanism 6 is the same as the corner limiting ring feeding mechanism 5, and will not be described in detail here; the torsion spring assembly mechanism 61 acts reciprocally between the upper end of the torsion spring storage rod and the sleeve rod 22, so that the torsion spring continuously feeds material and is picked up by the torsion spring assembly mechanism 61.

[0032] The torsion spring assembly mechanism 61 includes a torsion spring horizontal moving part 62 mounted on the frame 1, a torsion spring vertical moving part 63 mounted on the torsion spring horizontal moving part 62, and a torsion spring clamping claw 64 mounted on the torsion spring vertical moving part 63 for picking up the torsion spring at the discharge end of the torsion spring feeding mechanism 6 and assembling it on the sleeve shaft 22; the torsion spring horizontal moving part 62 and the torsion spring vertical moving part 63 are any one of the existing motor screw drive structure, cylinder structure or gear rack drive structure.

[0033] In another preferred embodiment, the torsion spring clamping claw 64 is connected to a torsion spring correction rotary motor 65. When the torsion spring is reversed, the torsion spring clamping claw 64 can be rotated 180° by the torsion spring correction rotary motor 65 before the torsion spring is assembled onto the upper end of the corner limiting ring on the tooling fixture 2, thereby improving the applicability of the torsion spring assembly mechanism 61.

[0034] Reference Figure 3 , Figure 13The torsion spring torsion storage mechanism 8 includes a vertical drive unit 81 mounted on the frame 1, a storage rotary motor 82 mounted on the vertical drive unit 81, a force-limiting block 83 mounted on the output shaft of the storage rotary motor 82, and a top pin drive member 84 mounted on the frame 1. The vertical drive unit 81 can be any of the existing motor screw drive structure, cylinder structure, or gear rack drive structure. The storage rotary motor 82 drives the force-limiting block 83 to rotate and acts on the outer limit end of the torsion spring, causing the torsion spring to be converted into a storage state. The top pin drive member 84 is a cylinder. When the torsion spring torsion storage mechanism 8 stores the torsion spring on the sleeve shaft 22, the top pin drive member 84 drives the positioning pin 23 to move towards the force-limiting block 83 and makes the outer limit end of the torsion spring clamp onto the positioning pin 23. At this time, the positioning pin 23 is fixed to the fixed seat 21 under the action of the torsion spring, and positions the torsion spring on the sleeve shaft 22 as a storage state.

[0035] Reference Figures 3 to 7 The door handle pressing mechanism 9 includes a stripping drive unit 91 mounted on the frame 1, a door handle pre-tightening drive unit 92 mounted on the stripping drive unit 91, and a tensioning unit 93 mounted on the central axis of the sleeve shaft 22 for locking / relaxing the door handle; the door handle pre-tightening drive unit 92 acts on the tensioning unit 93 to switch the door handle above the sleeve shaft 22 to the locking / relaxing state; the stripping drive unit 91 acts on the sleeve shaft 22 to make it slide back and forth on the fixed seat 21 and assemble the door lock handle components on the sleeve shaft 22 onto the door handle.

[0036] Specifically, the unloading drive unit 91 and the door handle pre-tightening drive unit 92 are either motor screw drive structure, reciprocating cylinder drive structure, or gear rack drive structure. In this solution, the reciprocating cylinder drive structure is preferred. That is, the unloading drive unit 91 includes an unloading cylinder 911 mounted on the machine base, a vertical slide 912 mounted on the piston rod of the unloading cylinder 911, and an unloading claw 913 mounted on the vertical slide 912. An unloading seat 223 is connected to one end of the sleeve shaft 22. The unloading cylinder 911 drives the vertical slide 912 to slide back and forth, so that the unloading claw 913 acts on the unloading seat 223 on the sleeve shaft 22, causing the sleeve shaft 22 to slide back and forth on the fixed seat 21, thereby achieving the purpose of sliding the sleeve shaft 22 on the fixed seat 21. The door handle pre-tightening drive unit 92 includes a pre-tightening cylinder 921 mounted on a vertical slide 912 in the unloading drive unit 91 and a pre-tightening claw 922 mounted on the pre-tightening cylinder 921. In this solution, the pre-tightening claw 922 is located inside the unloading claw 913. The pre-tightening claw 922 acts on the tensioning unit 93 to make the central axis slide rod 931 slide back and forth within the central axis fixing rod 932.

[0037] The tensioning unit 93 includes a central axis slide rod 931, a central axis fixing rod 932, and a convex base 933 fixedly connected to one end of the central axis slide rod 931. One end of the central axis fixing rod 932 is fixedly inserted into the sleeve rod 22. Several petal rods 934 are spaced apart at the other end of the central axis fixing rod 932. The other end of the central axis slide rod 931 is provided with an umbrella-shaped inverted platform 935. The central axis slide rod 931 is slidably installed at the central axis of the central axis fixing rod 932 and passes through the central axis fixing rod 932. The door handle pre-tensioning drive unit 92 acts on the convex base 933 and pulls it down, so that the central axis slide rod 931 slides in the central axis fixing rod 932. The several petal rods 934 open up to each other under the contact of the umbrella-shaped inverted platform 935, so as to align the door handle with the sleeve rod 22 and fix it above the sleeve rod 22.

[0038] During the assembly of the door lock handle components, the stripping drive unit 91 acts on the sleeve rod 22, causing the sleeve rod 22 to slide down onto the fixed seat 21 and into the fixed seat 21. At this time, the tensioning unit 93 moves the door handle down synchronously with the sleeve rod 22. Under the limiting action of the end face of the fixed seat 21, the door lock handle components on the sleeve rod 22 are smoothly moved and assembled onto the door handle.

[0039] The implementation principle is as follows: First, the door lock handle parts are placed into the corresponding feeding mechanism / supply mechanism to realize the automatic feeding of the door lock handle parts; in the snap ring assembly process, the snap ring at the discharge end of the snap ring feeding mechanism 3 is transferred to the pre-installation frustum 321 of the snap ring pre-installation seat 32 by the snap ring horizontal pusher 33; then the snap ring transfer cylinder 36 drives the snap ring pre-installation seat 32 to move down and align the lower end of the pre-installation frustum 321 with the upper end of the sleeve shaft 22. At this time, the snap ring support cylinder 35 drives and acts on the lower end of the sleeve shaft 22, so that the sleeve shaft 22 is stable on the fixed seat 21; finally, the snap ring fitted on the pre-installation frustum 321 is assembled onto the sleeve shaft 22 by the snap ring vertical pressing member 34, thus completing the assembly of the snap ring from the discharge end of the snap ring feeding mechanism 3 to the tooling fixture 2. Subsequently, the tooling circulation mechanism 11 drives the tooling fixture 2 to rotate one station, transferring the tooling fixture 2 equipped with the snap ring to the metal gasket assembly mechanism 41. In the metal gasket assembly process, the metal gasket horizontal moving part 42 and the metal gasket vertical moving part 43 coordinately reciprocate in the horizontal and vertical directions between the upper end of the sleeve shaft 22 and the feeding end of the snap ring horizontal pusher 33, so that the metal gasket finger cylinder 44 assembles the metal gasket from the discharge end of the metal gasket feeding mechanism 4 to the upper end of the snap ring on the tooling fixture 2. The tooling circulation mechanism 11 drives the tooling fixture 2 to continue rotating one station. In the corner limiting snap ring assembly process, the corner limiting snap ring horizontal moving part 56... The vertical moving part 57 of the corner limiting ring moves in a coordinated reciprocating motion between the upper end of the corner limiting ring storage rod 51 and the sleeve rod 22 in both horizontal and vertical directions, so that the corner limiting ring clamping claw 58 assembles the corner limiting ring at the discharge end of the corner limiting ring feeding mechanism onto the upper end of the metal pad on the tooling fixture 2; the tooling circulation mechanism 11 drives the tooling fixture 2 to continue rotating one station. In the torsion spring assembly process, the horizontal moving part 62 and the vertical moving part 63 of the torsion spring move in a coordinated reciprocating motion between the upper end of the torsion spring storage rod and the sleeve rod 22 in both horizontal and vertical directions, so that the torsion spring is continuously fed and picked up by the torsion spring assembly mechanism 61 and assembled onto the upper end of the corner limiting ring on the tooling fixture 2; In the torsion spring torsion storage process, the vertical drive unit 81 drives the storage rotary motor 82 to move in the direction of the tooling fixture 2. Then, the storage rotary motor 82 drives the force limiting block 83 to rotate and act on the outer limiting end of the torsion spring to convert the torsion spring into a storage state. Meanwhile, the top pin drive 84 drives the positioning pin 23 to move in the direction of the force limiting block 83 and makes the outer limiting end of the torsion spring clamp onto the positioning pin 23, thereby positioning the torsion spring on the sleeve shaft 22 into a storage state. Finally, in the door handle pressing process, the door handle is first applied to the discharge end of the washer feeding mechanism 7, and a single washer is assembled onto the positioning shaft of the door handle. Then, the positioning shaft of the door handle is sleeved outside the central axis slide rod 931 and abuts against the upper end of the sleeve shaft rod 22. At this time, the door handle pre-tightening drive unit 92 acts on the convex base 933 to pull it up and down, causing the central axis slide rod 931 to slide inside the central axis fixing rod 932. This causes the petal rods 934 to open up against each other under the contact of the umbrella-shaped inverted platform 935, achieving the purpose of aligning the door handle with the sleeve shaft rod 22 and fixing it above the sleeve shaft rod 22. Then, the material removal drive unit 91 acts on the sleeve shaft rod 22, causing the sleeve shaft rod 22 to slide down onto the fixing seat 21 and into the fixing seat 21. At this time, the tensioning unit 93 moves the door handle along with the door handle. As the sleeve shaft 22 and positioning pin 23 move down synchronously, the door lock handle components are moved and assembled onto the positioning shaft of the door handle under the limiting action of the end face of the fixed seat 21. After assembly, the door handle pre-tightening drive unit 92 and the unloading drive unit 91 are reset in sequence, and the sleeve shaft 22 is kept in its initial state on the fixed seat 21 under the action of the elastic reset member 24. The tensioning unit 93 switches the door handle above the sleeve shaft 22 to a relaxed state, and the door lock handle components are assembled onto the fixed shaft of the door handle to complete the assembly process. Through the coordination between the above feeding mechanism / material supply mechanism and assembly mechanism, the door lock handle components are automatically assembled, greatly reducing manual labor, and achieving high assembly efficiency and good product assembly quality.

[0040] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An automatic door lock handle assembly machine, comprising a frame, characterized in that: It also includes a tooling circulation mechanism that operates intermittently at equal intervals, several tooling fixtures mounted on the tooling circulation mechanism for loading door lock handle parts, a circlip feeding mechanism for automatically arranging and conveying circlips, a metal gasket feeding mechanism for automatically arranging and conveying metal gaskets, a corner limiting circlip feeding mechanism for automatically arranging and conveying corner limiting circlips, a torsion spring feeding mechanism for automatically arranging and conveying torsion springs, and circlip assembly mechanisms, metal gasket assembly mechanisms, corner limiting circlip assembly mechanisms, torsion spring assembly mechanisms, and torsion spring torsion storage mechanisms arranged sequentially around the tooling circulation mechanism. A door handle pressing mechanism; the snap ring assembly mechanism is used to assemble the snap ring at the discharge end of the snap ring feeding mechanism onto the tooling fixture; the metal gasket assembly mechanism is used to assemble the metal gasket at the discharge end of the metal gasket feeding mechanism onto the upper end of the snap ring on the tooling fixture; the angled retaining ring assembly mechanism is used to assemble the angled retaining ring at the discharge end of the angled retaining ring assembly mechanism onto the upper end of the metal gasket on the tooling fixture; the torsion spring assembly mechanism is used to assemble the torsion spring at the discharge end of the torsion spring feeding mechanism onto the upper end of the angled retaining ring on the tooling fixture; the torsion spring torsion storage mechanism is used for... The torsion spring on the tooling fixture is twisted into a stored state; the door handle pressing mechanism is used to assemble the door lock handle component onto the door handle when the door handle is pressed against the tooling fixture; the tooling fixture includes a fixed base mounted on the tooling circulation mechanism, a sleeve shaft rod slidably mounted on the fixed base for temporarily storing the door lock handle component, and a positioning pin connected to the sleeve shaft rod and used to clamp the outer limit end of the torsion spring when the torsion spring on the sleeve shaft rod is twisted into a stored state by the torsion spring torsion storage mechanism. A positioning groove is provided on the axial surface of the sleeve shaft rod. When the torsion spring is assembled onto the sleeve shaft rod... The inner limiting end of the torsion spring on the shaft is locked in the positioning groove; the door handle pressing mechanism includes a material removal drive unit mounted on the frame, a door handle pre-tightening drive unit mounted on the material removal drive unit, and a tensioning unit mounted on the central axis of the sleeve shaft for locking / relaxing the door handle; the door handle pre-tightening drive unit acts on the tensioning unit to switch the door handle above the sleeve shaft to a locked / relaxed state; the material removal drive unit acts on the sleeve shaft to make it slide back and forth on the fixed seat and assemble the door lock handle component on the sleeve shaft onto the door handle; The torsion spring torsion storage mechanism includes a vertical drive unit mounted on the frame, a storage rotary motor mounted on the vertical drive unit, a force-limiting block mounted on the output shaft of the storage rotary motor, and a top pin drive component mounted on the frame. The storage rotary motor drives the force-limiting block to rotate and acts on one end of the torsion spring to convert the torsion spring into a storage state. The top pin drive component is used to drive the positioning pin to move towards the force-limiting block and make the end of the torsion spring located on the sleeve shaft abut against the positioning pin.

2. The automatic door lock handle assembly machine according to claim 1, characterized in that: The tensioning unit includes a central axis slide rod, a central axis fixing rod, and a convex base fixedly connected to one end of the central axis slide rod; one end of the central axis fixing rod is fixedly inserted into the sleeve rod, and a plurality of petal rods are spaced apart at the other end of the central axis fixing rod; the other end of the central axis slide rod is provided with an umbrella-shaped inverted platform; the central axis slide rod is slidably installed at the central axis of the central axis fixing rod and passes through the central axis fixing rod; the door handle pre-tensioning drive unit can drive the central axis slide rod to slide within the central axis fixing rod and open the plurality of petal rods relative to each other.

3. The automatic door lock handle assembly machine according to claim 2, characterized in that: An elastic reset element is provided between the fixed seat and the sleeve shaft.

4. The automatic door lock handle assembly machine according to claim 1, characterized in that: The snap ring assembly mechanism includes a snap ring pre-assembly seat mounted on the frame, a snap ring horizontal pusher, a snap ring vertical presser, a snap ring support cylinder, and a snap ring transfer cylinder. The snap ring pre-assembly seat includes a pre-assembly frustum portion designed in the shape of a frustum. The snap ring horizontal pusher is used to push the snap ring from the discharge end of the snap ring feeding mechanism to the top of the pre-assembly frustum portion of the snap ring pre-assembly seat. The snap ring transfer cylinder is connected to the snap ring pre-assembly seat and reciprocates between the upper end of the sleeve shaft and the feeding end of the snap ring horizontal pusher. The snap ring vertical presser is located above the pre-assembly frustum portion and assembles the snap ring sleeved on the pre-assembly frustum portion onto the sleeve shaft. During snap ring assembly, the snap ring support cylinder acts on the lower end of the sleeve shaft.

5. The automatic door lock handle assembly machine according to claim 1, characterized in that: The metal gasket assembly mechanism includes a horizontal moving part for metal gaskets mounted on the frame, a vertical moving part for metal gaskets mounted on the horizontal moving part for metal gaskets, and a metal gasket finger cylinder mounted on the vertical moving part for picking up metal gaskets from the discharge end of the metal gasket feeding mechanism and assembling them onto the sleeve shaft.

6. The automatic door lock handle assembly machine according to claim 1, characterized in that: The corner limiting retaining ring feeding mechanism includes a corner limiting retaining ring storage rod, a corner limiting retaining ring upward moving drive component mounted on the frame, a top plate connected to the corner limiting retaining ring upward moving drive component, and a corner limiting retaining ring sensor installed at the end of the corner limiting retaining ring storage rod for sensing whether there is a corner limiting retaining ring at the uppermost end of the corner limiting retaining ring storage rod. The corner limiting retaining ring sensor is electrically connected to the corner limiting retaining ring upward moving drive component. The corner limiting retaining ring assembly mechanism reciprocates between the upper end of the corner limiting retaining ring storage rod and the sleeve shaft rod.

7. The automatic door lock handle assembly machine according to claim 1 or 6, characterized in that: The corner limiting clasp assembly mechanism includes a corner limiting clasp horizontal moving component mounted on the frame, a corner limiting clasp vertical moving component mounted on the corner limiting clasp horizontal moving component, and a corner limiting clasp clamping claw mounted on the corner limiting clasp vertical moving component for picking up the corner limiting clasp at the discharge end of the corner limiting clasp feeding mechanism and assembling it on the sleeve shaft.

8. The automatic door lock handle assembly machine according to claim 1, characterized in that: The torsion spring assembly mechanism includes a torsion spring horizontal moving component mounted on the frame, a torsion spring vertical moving component mounted on the torsion spring horizontal moving component, and a torsion spring clamping claw mounted on the torsion spring vertical moving component for picking up the torsion spring at the discharge end of the torsion spring feeding mechanism and assembling it on the sleeve shaft.

9. The automatic door lock handle assembly machine according to claim 1, characterized in that: It also includes a gasket feeding mechanism with automatic arrangement of conveyor handle gaskets.

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