Latch bolt assembling machine

Abstract

The utility model relates to the technical field of automatic lockset production equipment, in particular to a latch bolt assembling machine which comprises a rack, a rotating disc is arranged on the rack, and a tow bar feeding mechanism, a pin feeding mechanism, a gasket feeding mechanism and a spin riveting mechanism are sequentially arranged on the circumferential side in the rotating direction of the rotating disc. A latch bolt body feeding mechanism, a drag rod pressing-in mechanism, a pin feeding mechanism, a drilling mechanism, a pin pressing-in mechanism and a discharging mechanism are arranged on the portion, located on the output side of the rotary disc, of the rack. The automatic assembling machine is beneficial for solving the problems that some existing automatic assembling machines are only provided with a rotary table with a tool base and used for fixing the latch bolt body and the tow bar in a tool mode at the same time, the design of a tool restraining structure is limited by restraining consideration of multiple workpieces, the structural size of the tool base is relatively large, the workload of the rotary table is large, and the working efficiency is high. And a more reasonable and accurate detection mechanism cannot be flexibly configured.

Description

Technical Field

[0001] This utility model relates to the field of automatic lock production equipment technology, and in particular to a latch assembly machine. Background Technology

[0002] Door locks, as common security devices in daily life, have always been a focus of attention due to their structural design and manufacturing process. The latch, a crucial component of a door lock, automatically extends and retracts within the lock body when the door is closed, locking the door against the frame. When the door is opened, it retracts into the lock body under the actuation of the handle, key, or other mechanisms to unlock the door. The manufacturing quality and assembly precision of the latch directly affect the overall performance and security of the door lock.

[0003] When assembling a slanted tongue, the drag bar, nail feet, and gaskets need to be attached to the slanted tongue body. Traditional slanted tongue assembly relies heavily on manual operation, where the slanted tongue body, drag bar, nail feet, and gaskets are assembled one by one by hand. This method is not only inefficient but also makes it difficult to guarantee assembly accuracy, easily leading to quality problems. Although some automatic slanted tongue assembly machines have appeared on the market, they are equipped with a turntable with a fixture base. The assembly and fixation of the slanted tongue body and drag bar all rely on the fixture base. However, the design of the fixture constraint structure is limited by the constraints of multiple workpieces, resulting in a relatively large fixture base structure. This leads to a heavy workload on the turntable and makes it difficult to flexibly configure a more reasonable and accurate inspection mechanism. Utility Model Content

[0004] This utility model provides a slanted tongue assembly machine, which helps to solve the problem that some existing automatic assembly machines are only equipped with a turntable with a tooling seat to simultaneously fix the slanted tongue body and the drag bar. The design of the tooling constraint structure is limited by the constraint considerations of multiple workpieces, resulting in a relatively large structural volume of the tooling seat. This leads to a heavy workload on the turntable and makes it impossible to flexibly configure a more reasonable and accurate detection mechanism.

[0005] This utility model is implemented as follows:

[0006] A slanted tongue assembly machine includes a frame with a turntable on the frame. The turntable has several centrally symmetrically arranged tooling seats, each with countersunk holes for tooling drag rods. A transverse elastic holding structure is provided at the top of the countersunk holes. Along the circumference of the turntable's rotation direction, a drag rod feeding mechanism, a pin feeding mechanism, a gasket feeding mechanism, and a riveting mechanism are sequentially arranged. On the output side of the turntable, the frame has a slanted tongue main body feeding mechanism, a drag rod pressing mechanism, a pin feeding mechanism, a drilling mechanism, a pin pressing mechanism, and a discharge mechanism. The drag rod pressing mechanism is located at the output end of the slanted tongue main body feeding mechanism. The drilling mechanism and the pin pressing mechanism are located at the output end of the pin feeding mechanism. A transfer mechanism is located adjacent to the output end of the turntable. The drag rod pressing mechanism is located between the transfer mechanism and the drilling mechanism, and a shift fork mechanism is provided between the drag rod pressing mechanism and both the transfer mechanism and the drilling mechanism.

[0007] Based on the above technical solution, the tooling base includes a tooling plate, a sliding plate, a tension spring, a fixed plate, a spring-loaded plate, and a spring. The tooling plate is bolted to the outer periphery of the turntable. The sliding plate is movably inserted into the tooling plate. The tension spring is longitudinally telescopically connected between the tooling plate and the sliding plate. A countersunk hole is provided on the sliding plate, forming an opening structure at the top of the sliding plate. Two fixed plates are provided on the top of the sliding plate and located on both sides of the opening structure of the countersunk hole. The spring-loaded plate is movably inserted into the fixed plate. The side of the spring-loaded plate closest to the countersunk hole is the clamping end. The spring is provided between the side of the spring-loaded plate away from the countersunk hole and the sliding plate, so that the spring-loaded plate can form a spring-loaded clamping structure with lateral inward and outward displacement.

[0008] Based on the above technical solution, a material loading detection mechanism is also provided on the circumference of the turntable at the rear end of the output end of each material loading mechanism.

[0009] Based on the above technical solution, the riveting mechanism is provided with a riveting pressure detection mechanism at the rear end.

[0010] Based on the above technical solution, the countersunk hole is a through hole structure with the bottom hole diameter smaller than the top hole diameter, and the bottom hole diameter is smaller than the outer diameter of the tow rod.

[0011] Based on the above technical solution, the tooling plate is set horizontally, and the sliding plate is set perpendicularly to the tooling plate.

[0012] Based on the above technical solution, the transfer mechanism includes two supports connected to the frame, a sliding module is mounted on the top of the two supports, a transverse sliding plate is provided on the sliding module, and a fixed seat is provided on the top of the transverse sliding plate. The fixed seat is used to rotate the workpiece at the output end of the turntable.

[0013] Based on the above technical solution, the sliding module is equipped with a travel limit sensor.

[0014] Compared with the prior art, the present invention has at least the following advantages:

[0015] This invention, by sequentially arranging a drag rod feeding mechanism, a nail foot feeding mechanism, a gasket feeding mechanism, and a riveting mechanism on the circumference of the turntable in the direction of rotation, pre-rivets the drag rod, nail feet, and gaskets into a semi-assembled structure. This design, staggered and separate from the main body feeding mechanism of the inclined tongue, allows the tooling seat on the turntable to be designed solely for the drag rod structure. This enables the tooling structure to be lightweight and miniaturized, reducing the load on the turntable and decreasing the space occupied by the tooling seat during rotation. This frees up more space for arranging the inspection mechanism. Therefore, it addresses the problem of some existing automatic assembly machines that only have a single turntable with a tooling seat for simultaneously fixing the inclined tongue and drag rod. The design of the tooling constraint structure is limited by the constraints of multiple workpieces, resulting in a relatively large tooling seat structure. This leads to a heavy workload on the turntable and an inability to flexibly configure a more reasonable and precise inspection mechanism. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a three-dimensional structural schematic diagram of a tongue-and-groove assembly machine in one embodiment;

[0018] Figure 2 for Figure 1 Top view;

[0019] Figure 3 for Figure 1 Schematic diagram of the structure of the turntable and tooling base;

[0020] Figure 4 for Figure 3 Schematic diagram of the intermediate tooling base;

[0021] Figure 5 for Figure 4 A sectional view;

[0022] Figure 6 This is a schematic diagram of the transfer mechanism.

[0023] The diagram is labeled as follows: 1. Frame; 2. Turntable; 2a. Bail rod feeding mechanism; 2b. Pin foot feeding mechanism; 2c. Shim feeding mechanism; 2d. Riveting mechanism; 3. Tooling base; 31. Tooling plate; 32. Sliding plate; 33. Tension spring; 34. Fixed plate; 35. Spring pressure plate; 36. Spring; 37. Countersunk hole; 4. Slanted tongue main body feeding mechanism; 5. Bail rod pressing mechanism; 6. Transfer mechanism; 61. Support; 62. Sliding module; 63. Transverse plate; 64. Fixed base; 7. Fork mechanism; 8. Pin feeding mechanism; 8a. Drilling mechanism; 8b. Pin pressing mechanism; 9. Discharge mechanism. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to represent selected embodiments of this utility model.

[0025] In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0026] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0027] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0028] Combination Figure 1-6 This embodiment discloses a slanted tongue assembly machine, which aims to improve assembly efficiency and accuracy and reduce manufacturing costs by optimizing the design of the tooling base 3 and the layout of the turntable 2.

[0029] Specifically, the inclined tongue assembly machine includes a frame 1, which is assembled from aluminum alloy profiles and aluminum alloy panels. The main body of the frame 1 has a box-like structure, mainly serving as a load-bearing and supporting structure. The bottom of the frame 1 is equipped with height-adjustable support legs and casters to facilitate the fixed placement and relocation of the frame 1.

[0030] The top of the frame 1 is equipped with a horizontal worktable, and one end of the worktable is equipped with a turntable 2, which is combined with... Figure 3 As shown, the main body of the turntable 2 is a horizontal disc structure. The bottom is pivotally connected to the frame 1 via a central vertical shaft and a stepper motor is driven to it. The turntable 2 is equipped with 10 tooling seats 3 arranged symmetrically in the center. During operation, the turntable 2 drives the tooling seats 3 to rotate periodically in a stepping manner, realizing cyclic stepping processing operation.

[0031] The tooling base 3 is provided with a countersunk hole 37 for the tooling drag bar, and the top of the countersunk hole 37 is provided with a transverse elastic holding structure. Specifically, in conjunction with Figure 4 and Figure 5 As shown, the tooling base 3 includes a tooling plate 31, a sliding plate 32, a tension spring 33, a fixing plate 34, a spring-loaded plate 35, and a spring 36. The tooling plate 31 is bolted to the outer periphery of the turntable 2. The sliding plate 32 is movably inserted into the tooling plate 31. The tooling plate 31 is horizontally positioned, and the sliding plate 32 is perpendicular to the tooling plate 31. The tension spring 33 is longitudinally telescopically connected between the tooling plate 31 and the sliding plate 32. A countersunk hole 37 is provided on the sliding plate 32, forming an opening at the top of the sliding plate 32. Two fixing plates 34 are provided on the top of the sliding plate 32 and located on both sides of the opening of the countersunk hole 37. The spring-loaded plate 35 is movably inserted into the fixing plate 34. The side of the spring-loaded plate 35 closest to the countersunk hole 37 is the clamping end. The spring 36 is provided between the side of the spring-loaded plate 35 away from the countersunk hole 37 and the sliding plate 32, so that the spring-loaded plate 35 can form a spring-loaded clamping structure with lateral inward and outward displacement. During operation, after the tow bar is loaded, the transfer robot inserts the bottom of the tow bar into the countersunk hole 37. After insertion, the spring plates 35 on both sides are pressed outward, resulting in passive sliding, and then maintain elastic clamping with inward compression on both sides, keeping the tow bar stable within the countersunk hole 37. The sliding plate 32 can undergo relative longitudinal displacement with the tooling plate 31, preventing excessive rigid compression of the workpiece during insertion of the tow bar, thus protecting the workpiece structure. It should be noted that the bottom of the riveting station corresponding to the riveting mechanism 2d is equipped with a support structure to support the sliding plate 32 and keep it highly stable during riveting.

[0032] Furthermore, the countersunk hole 37 is a through hole structure with the bottom hole diameter smaller than the top hole diameter, and the bottom hole diameter smaller than the outer diameter of the tow rod. This allows for the subsequent installation of a lifting structure or detection mechanism at the bottom, further enhancing the structural flexibility while ensuring basic functionality.

[0033] Combination Figure 1and Figure 2 As shown, a drag bar feeding mechanism 2a, a nail foot feeding mechanism 2b, a gasket feeding mechanism 2c, and a riveting mechanism 2d are sequentially arranged on the circumference along the rotation direction of the turntable 2. The drag bar feeding mechanism 2a, the nail foot feeding mechanism 2b, and the gasket feeding mechanism 2c all employ a vibrating feeding disc paired with a support rail and a transfer robot. These mechanisms are all existing technologies, and their specific structures and working principles can be found in patents CN210615730U and CN111992626B. They will not be elaborated upon here. Those skilled in the art can select and implement the appropriate mechanism from existing technologies based on actual operational needs.

[0034] The frame 1, located on the output side of the turntable 2, is equipped with a tongue-type main feeding mechanism 4, a drag bar pressing mechanism 5, a pin feeding mechanism 8, a drilling mechanism 8a, a pin pressing mechanism 8b, and a discharge mechanism 9. The drag bar pressing mechanism 5 is located at the output end of the tongue-type main feeding mechanism 4, the drilling mechanism 8a and the pin pressing mechanism 8b are located at the output end of the pin feeding mechanism 8, and a transfer mechanism 6 is provided on the side adjacent to the output end of the turntable 2. The drag bar pressing mechanism 5 is located between the transfer mechanism 6 and the drilling mechanism 8a, and a shift fork mechanism 7 is provided between the drag bar pressing mechanism 5 and the transfer mechanism 6 and the drilling mechanism 8a.

[0035] The inclined tongue main body feeding mechanism 4 includes a stacking tray and a transfer robot. Its output end is located at the station of the drag bar pressing mechanism 5. The station is provided with a tooling slot adapted to the inclined tongue main body. The inclined tongue pressing mechanism adopts a stamping device with a suitable punch. It is existing technology. Its specific structure and working principle will not be described in detail here. Those skilled in the art can select and implement it from the existing technology according to the actual operation.

[0036] The pin feeding mechanism 8 uses a vibrating feeding plate with a support rail and a transfer robot. Its output end is located at the station of the pin pressing mechanism 8b, and it feeds in the pins one by one during operation.

[0037] The drilling mechanism 8a uses a punching device to drill holes in the inclined tongue body after the drag bar is installed. The pin pressing mechanism 8b uses a punching device with a suitable punch, which works with the pin feeding mechanism 8 to insert the pin into the pin hole processed by the drilling mechanism 8a, thus completing the locking between the workpiece parts.

[0038] Combination Figure 6 As shown, the transfer mechanism 6 includes two supports 61 connected to the frame 1. A sliding module 62 is mounted on top of the two supports 61. A transverse plate 63 capable of lateral reciprocating sliding is provided on the sliding module 62. A fixed seat 64 is provided on top of the transverse plate 63, and the fixed seat 64 is used to rotate the workpiece at the output end of the rotating disk 2. In order to ensure stable and reliable transfer stroke, the sliding module 62 is equipped with a stroke limit sensor.

[0039] The discharge mechanism 9 adopts a transfer robot and slide rail, which are existing technologies. Its specific structure and working principle will not be described in detail here. Those skilled in the art can select and implement it from existing technologies according to actual operation conditions.

[0040] It should be noted that a material feeding detection mechanism is also provided on the circumference of the turntable 2 at the rear end of the output end of each feeding mechanism. In this embodiment, a photoelectric sensor is used to enable the output end of the feeding mechanism to have a stable and accurate automatic detection capability, avoiding material shortages that could lead to subsequent processing errors and defective products. In this embodiment, a riveting detection mechanism is provided at the rear end of the riveting mechanism 2d. This is existing technology, and its specific structure and working principle will not be described in detail here. Those skilled in the art can select and implement it from existing technologies according to actual operating conditions.

[0041] In the specific implementation process, following the step-by-step rotation of the turntable 2, the tow bar feeding mechanism 2a first places the tow bar in a vertical position on the tooling seat 3, the nail foot feeding mechanism 2b then puts the nail foot on the tow bar, and then the shim feeding mechanism 2c puts the shim on the tow bar. Then the riveting mechanism 2d performs riveting processing to obtain a semi-finished product. The semi-finished product is laterally transferred from the output end of the turntable 2 to the side of the tow bar pressing mechanism 5 by the transfer mechanism 6. Here, the tongue body has already been fed by the tongue body feeding mechanism 4 and is waiting. The semi-finished product is pre-assembled with the tongue body by the shift fork mechanism 7 located on the front side in conjunction with the tow bar pressing mechanism 5. Then the workpiece is transferred to the station of the drilling mechanism 8a by another shift fork mechanism 7 to drill holes at the threshold position. Then the workpiece is transferred to the station of the pin pressing mechanism 8b, where the pin is placed into the pin hole and appropriately stamped by the pin feeding mechanism 8. Then the finished product is output by the discharge mechanism 9.

[0042] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A slanted tongue assembly machine, characterized in that, Includes a frame (1), a turntable (2) is provided on the frame (1), a number of tooling seats (3) are provided on the turntable (2) in a centrally symmetrical arrangement, a countersunk hole (37) for tooling drag bar is provided on the tooling seat (3), and a transverse elastic pressing structure is provided at the top of the countersunk hole (37). Along the circumference of the turntable (2) in the direction of rotation, there are sequentially arranged a drag rod feeding mechanism (2a), a nail foot feeding mechanism (2b), a gasket feeding mechanism (2c), and a riveting mechanism (2d); the frame (1) located on the output side of the turntable (2) is provided with a tongue body feeding mechanism (4), a drag rod pressing mechanism (5), a pin feeding mechanism (8), a drilling mechanism (8a), a pin pressing mechanism (8b), and a discharge mechanism (9); The drag bar pressing mechanism (5) is located at the output end of the inclined tongue main body feeding mechanism (4), the drilling mechanism (8a) and the pin pressing mechanism (8b) are located at the output end of the pin feeding mechanism (8), and the drag bar pressing mechanism (5) is provided with a transfer mechanism (6) on the side adjacent to the output end of the turntable (2); the drag bar pressing mechanism (5) is located in the middle of the transfer mechanism (6) and the drilling mechanism (8a), and a shift fork mechanism (7) is provided between the drag bar pressing mechanism (5) and the transfer mechanism (6) and the drilling mechanism (8a).

2. The oblique tongue assembly machine according to claim 1, characterized in that, The fixture base (3) includes a fixture plate (31), a sliding plate (32), a tension spring (33), a fixed plate (34), a spring plate (35), and a spring (36). The fixture plate (31) is bolted to the outer periphery of the turntable (2). The sliding plate (32) is movably inserted into the fixture plate (31). The tension spring (33) is longitudinally telescopically connected between the fixture plate (31) and the sliding plate (32). A countersunk hole (37) is provided on the sliding plate (32) and is located on the sliding plate. (32) An opening structure is formed at the top. Two fixed plates (34) are set on the top of the sliding plate (32) and located on both sides of the opening structure of the countersunk hole (37). The spring plate (35) is movably inserted on the fixed plate (34). The side of the spring plate (35) near the countersunk hole (37) is the clamping end. The spring (36) is set between the side of the spring plate (35) away from the countersunk hole (37) and the sliding plate (32) so that the spring plate (35) can form a spring clamping structure with lateral inward and outward displacement.

3. The oblique tongue assembly machine according to claim 1, characterized in that, The turntable (2) is also equipped with a material feeding detection mechanism located at the rear end of the output end of each feeding mechanism on its periphery.

4. The oblique tongue assembly machine according to claim 1, characterized in that, The riveting mechanism (2d) is equipped with a riveting detection mechanism at its rear end.

5. A tongue-and-groove assembly machine according to claim 2, characterized in that, The countersunk hole (37) is a through hole structure with the bottom hole diameter smaller than the top hole diameter, and the bottom hole diameter smaller than the outer diameter of the tow rod.

6. The oblique tongue assembly machine according to claim 2, characterized in that, The tooling plate (31) is horizontally arranged, and the sliding plate (32) is vertically arranged with respect to the tooling plate (31).

7. The oblique tongue assembly machine according to claim 1, characterized in that, The transfer mechanism (6) includes two supports (61) connected to the frame (1). A sliding module (62) is mounted on the top of the two supports (61). A transverse plate (63) capable of reciprocating laterally is provided on the sliding module (62). A fixed seat (64) is provided on the top of the transverse plate (63). The fixed seat (64) is used to rotate the workpiece at the output end of the turntable (2).

8. A tongue-and-groove assembly machine according to claim 7, characterized in that, The sliding module (62) is equipped with a travel limit sensor.

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