A feeding structure for riveting a lock pin

Abstract

The utility model provides a kind of feeding structure of lockset pin shaft riveting, the feeding structure includes pin shaft vibration disc, transfer mechanism and workbench, and is equipped with profiling tooling plate on workbench, and is equipped with pin shaft hole on profiling tooling plate, and is equipped with the passing device that communicates with pin shaft hole on profiling tooling plate, and profiling tooling plate below is equipped with the slidable pin shaft transport plate, and pin shaft transport plate head end is correspondingly equipped with pin shaft pressing hole below pin shaft hole of profiling tooling plate, and pin shaft transport plate below is also equipped with the positioning plate that is engaged with the transfer mechanism feeding place, the utility model is through collaborative design, realizes the automatic precision distribution of pin shaft feeding, substantially improves feeding efficiency and assembly consistency, ensures pin shaft installation positioning precision, reduces assembly error, improves product pass rate, significantly improves the stability and efficiency of lockset riveting production.

Description

Technical Field

[0001] This utility model proposes a feeding structure for riveting lock pins, which belongs to the field of automatic lock assembly equipment. Background Technology

[0002] Existing lock assembly production lines typically involve manually assembling the lock housing and pins before stamping them on a punch press. This method is inefficient, prone to errors due to manual placement leading to numerous defective products, and also poses operational safety risks. Therefore, a rapid feeding structure for pin riveting is needed to solve the aforementioned problems with lock pin feeding. This structure aims to achieve accurate pin feeding and enable efficient and safe lock riveting and stamping. Utility Model Content

[0003] To address the technical problems existing in the prior art, this utility model proposes a feeding structure for riveting lock pins, which enables accurate and rapid feeding of lock pins. The technical features adopted are as follows:

[0004] A feeding structure for riveting lock pins is characterized in that the feeding structure includes a pin vibrating plate, a transfer mechanism, and a worktable. The worktable is provided with a contouring fixture plate, which has pin holes. The contouring fixture plate is also provided with a material feeding device communicating with the pin holes. A slidable pin transport plate is provided below the contouring fixture plate. The head end of the pin transport plate is provided with a pin pressing hole corresponding to the pin holes in the contouring fixture plate. A positioning plate that engages with the feeding part of the transfer mechanism is also provided below the pin transport plate.

[0005] Preferably, the pin-shaft vibratory plate is connected to the material feeding device via a guide tube.

[0006] Preferably, the two ends of the contour tooling plate are fixed to the worktable by support plates, and the positional distance ratio between the pin hole of the contour tooling plate and the pin mounting hole of the lock housing in the lock is consistent.

[0007] Preferably, the pin-shaft transport plate is mounted on a sliding assembly on the workbench. The sliding assembly consists of a set of slide rails and a slider. A push-pull rod is also provided on the workbench to connect with the pin-shaft transport plate.

[0008] Preferably, the pin transport plate is provided with multiple buffer grooves, and a fixing block with a tension spring is provided in the buffer groove and connected to the connecting block. The connecting block is connected to the push-pull cylinder on the contour tooling plate.

[0009] Preferably, the positioning plate has a pin positioning groove, and an annular groove is provided below the pin positioning groove.

[0010] Preferably, the workbench is provided with a support frame, and a downward pre-compression cylinder is provided on the top plate of the support frame. A pre-compression component is provided below the pre-compression cylinder, and the pre-compression component is provided with a pressure column at the pin pre-compression position.

[0011] Preferably, the transfer mechanism includes a slide rail, a slider, and a base on the slider, with a transfer cylinder connected to the base.

[0012] The beneficial effects of this utility model are as follows: The feeding structure for lock pin riveting of this utility model achieves automated and precise distribution of pin feeding through the coordinated design of the pin vibration plate, the contour tooling plate, the sliding pin transport plate, and the positioning plate, which greatly improves feeding efficiency and assembly consistency; the position matching design of the contour tooling plate and the lock shell mounting hole, and the setting of the pre-pressing component ensure accurate pin installation positioning and reduce assembly errors; the buffer structure and flexible connection design reduce collision damage to the pin and lock shell while ensuring accurate positioning and improving product qualification rate; the overall structure is modular and easy to operate, adapting to the pin feeding needs of different specifications of locks, reducing production changeover costs, and significantly improving the stability and efficiency of lock riveting production. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0014] Figure 2 This is a top view of the present invention.

[0015] Figure 3 This is a side view of the present invention.

[0016] Figure 4 This is a schematic diagram of the structure of the present utility model. Figure 1 .

[0017] Figure 5 This is a schematic diagram of the structure of the present utility model. Figure 2 .

[0018] Figure 6 This is a schematic diagram of the structure of the present utility model. Figure 3 .

[0019] Figure 7 This is a schematic diagram of the structure of the present utility model. Figure 4 .

[0020] Figure 8 This is a schematic diagram of the structure of the present utility model. Figure 5 .

[0021] Among them, 1, pin-shaft vibratory plate; 2, transfer mechanism; 3, worktable; 21, base; 22, transfer cylinder; 23, loading point; 31, contour tooling plate; 32, material handling device; 33, pin-shaft transport plate; 34, positioning plate; 35, support frame;

[0022] 36, Pre-compression cylinder; 37, Pre-compression assembly; 311, Pin hole; 312, Push-pull cylinder; 331, Pin pressing hole;

[0023] 332, Sliding component; 333, Push-pull rod; 334, Buffer groove; 335, Tension spring; 336, Fixing block;

[0024] 337, connecting block; 341, pin positioning groove; 342, annular groove; 371, pressure column. Detailed Implementation

[0025] The present invention will be further described below with reference to specific embodiments, but the present invention is not limited to the embodiments.

[0026] In the description of this utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and "vertical" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; or they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] Furthermore, in the description of this utility model, unless otherwise stated, "multiple", "multiple groups", and "multiple roots" mean two or more.

[0029] Unless otherwise specified, the materials, instruments and methods used in the following embodiments are all conventional materials, instruments and methods in the art and can be obtained through commercial channels.

[0030] Example 1

[0031] Figure 1-4The schematic diagram of this utility model shows a locking pin riveting and feeding structure, including a pin vibrating plate 1, a transfer mechanism 2, and a worktable 3. The pin vibrating plate 1 has a feeding port and a vibrating part. The pin, after being adjusted in position, is conveyed through multiple guide tubes. The transfer mechanism 2 includes two parallel heavy-duty slide rails, which are fixed to the frame. A slider is slidably connected to the slide rail, and a horizontal base 21 is fixed to the top of the slider. A transfer cylinder 22 is connected to the base 21 through a flange. The extension and retraction direction of the transfer cylinder 22 is parallel to the slide rail, which can drive the base 21 to slide along the slide rail. A limiting plate is also fixed to the outside of the base 21, which plays a buffering and limiting role when the base 21 reaches the designated position, avoiding hard collisions between the base 21 and other components, extending the service life of the equipment, and improving the transfer positioning accuracy. The heavy-duty slide rail has a strong load-bearing capacity, ensuring that the base 21 is stable and does not shake when transferring the lock shell and the pin. The transfer cylinder 22 has high driving precision and can accurately control the transfer distance.

[0032] like Figure 4 , Figure 5 The contouring tooling plate 31 shown is fixed to the surface of the workbench 3 by support plates at both ends. The contouring tooling plate 31 is integrally formed according to the structure of the lock shell to be processed. The multiple pin holes 311 on it correspond one-to-one with the holes of the pins to be installed on the lock shell, and the hole spacing ratio is completely consistent. This ensures that the pin placement position is accurately matched with the lock shell installation requirements, avoids pin offset during subsequent riveting, reduces assembly errors, and improves the assembly accuracy of the lock. The contouring tooling plate 31 is also provided with a material feeding device 32 that is perpendicular to each pin hole 311. The material feeding device 32 has a through-hole structure. The outlet of the pin vibrating plate 1 is sealed to the through hole of the material feeding device 32 through a flexible guide tube. The flexible guide tube can buffer the impact force during pin feeding, and the sealed connection prevents the pin from falling or getting stuck, ensuring that the pin is stably fed into the pin hole 311 and improving the continuity of feeding.

[0033] like Figure 3 , Figure 4 As shown, a sliding pin transport plate 33 is provided below the contour tooling plate 31. The pin transport plate 33 is mounted on the worktable 3 via a sliding assembly 332. The sliding assembly 332 uses a set of high-precision linear guide rails and a slider. The guide rails are fixed parallel to the surface of the worktable 3, and the slider is bolted to the bottom of the pin transport plate 33. At the same time, a pneumatic push-pull rod 333 is fixed on one side of the worktable 3. The telescopic end of the push-pull rod 333 is perpendicularly connected to the side of the pin transport plate 33. The extension and retraction of the push-pull rod 333 drives the pin transport plate 33 to slide back and forth along the guide rail, realizing the rapid and accurate response of the pin transport plate 33.

[0034] like Figure 5-8As shown, the head end of the pin transport plate has a corresponding pin pressing hole 331 directly below each pin hole 311 in the contour tooling plate 31. The diameter of the pin pressing hole 331 is slightly larger than the pin diameter by 0.1-0.2mm, which facilitates the pin falling in and restricts the lateral sway of the pin. A positioning plate 34 is also fixed below the pin transport plate 33. The edge contour of the positioning plate 34 is perfectly matched with the slot of the loading part 23 of the transfer mechanism. A pin positioning groove 341 is provided at the position corresponding to each pin pressing hole 331, which can support and limit the pin 38 to be riveted, and restrict the pin sway. An annular groove 342 is also provided below the positioning groove. The annular groove 342 is used to limit the pin with the collar 39 that holds the pin, so that the pin positioning will not touch the pin, achieving accurate positioning and improving the positioning stability of the pin.

[0035] When the pin conveyor plate 33 slides to the position of the transfer mechanism 2, the positioning plate 34 can quickly engage with the loading point 23 to achieve precise positioning of the pin conveyor plate 33, reduce loading waiting time, improve loading efficiency, and at the same time ensure the docking accuracy between the pin and the transfer mechanism 2, preparing for the subsequent riveting process.

[0036] During operation, the pin vibratory feeder 1 assembles the disordered pins into an orderly arrangement, which are then conveyed to the feeding device 32 through the guide tube. The pins fall through the through hole into the pin holes 311 of the contour tooling plate 31, and finally are precisely embedded into the pin pressing holes 331 of the pin transport plate 33. Subsequently, the pin transport plate 33 slides to the transfer mechanism 2, where the positioning plate 34 engages and positions the pins, completing one feeding cycle. The entire process is highly automated and requires no manual intervention. The benefits include: replacing manual feeding, reducing labor intensity, avoiding errors caused by manual operation, and improving feeding stability.

[0037] Example 2

[0038] Based on Embodiment 1, the pin transport plate 33 is further provided with multiple evenly distributed buffer grooves 334. Each buffer groove 334 contains a fixing block 336. The fixing block 336 is fixed in the buffer groove 334 by a tension spring 335 and a connecting block 337. The connecting block 337 is connected to a push-pull cylinder 312 fixed on the contour tooling plate 31 via a connecting plate. The extension and retraction speed of the push-pull cylinder 312 can be adjusted by a throttle valve to adapt to the transport requirements of pins of different weights, improve the structural versatility, and significantly extend the pin transport plate 33. 3. The sliding mechanism is driven by the pneumatic push-pull rod 333. When the pin conveyor plate 33 moves to the loading point 23, the push-pull cylinder 312 drives the pin conveyor plate 33 to slide within a small range, realizing a flexible connection between the pin conveyor plate 33 and the base 21. The tension spring 335 can absorb the impact force during start-up and stop, ensuring that the pin conveyor plate 33 and the fixed plate are in close contact with the loading point 23, and avoiding hard collisions between the pin and the loading point 23, reducing scratches or deformation on the pin surface. At the same time, it improves the stability of the structure operation, reduces equipment wear, and extends service life.

[0039] In addition, a pre-compression assembly 37 is provided on the workbench 3. Symmetrical support frames 35 are fixed on both sides of the workbench 3. A downward pre-compression cylinder 36 is fixed under the top plate of the support frame 35 by bolts. The lower end of the piston rod of the pre-compression cylinder 36 is connected to the pre-compression assembly 37. The pre-compression assembly 37 includes a set of horizontally arranged pre-compression plates. A cylindrical pressure column 371 is fixed under the pre-compression plates at the position corresponding to each pin pressure hole 331. The pressure column 371 pre-compresses the collar on which the pin is placed, which can pre-compress the pin in the pin pressure hole 331 into the mounting hole of the lock housing, so as to prevent the pin from falling off during subsequent transfer. At the same time, the arc transition surface reduces the pressure damage to the top of the pin and improves product quality.

[0040] This embodiment is applicable to medium-sized locks produced in batches. The pin specifications are 4mm in diameter and 10mm in length, and the lock case weighs 0.5kg. During operation, the pre-pressure of the pre-pressure cylinder 36 is adjusted to 0.3MPa, which can stably pre-press the pin into the lock case hole by 3-4mm. Then, the transfer cylinder 22 drives the base 21 to move to the riveting station. The entire process of feeding, pre-pressing, and transfer is completed in one integrated manner, reducing the process connection time and improving production efficiency. The pre-pressing process reduces the risk of the pin falling off, and the transfer accuracy is high, ensuring the smooth progress of the riveting process. The product qualification rate is more than 15% higher than that of the traditional feeding method.

[0041] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Anyone skilled in the art can make various modifications and alterations without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be determined by the claims.

Claims

1. A feeding structure for riveting lock pins, characterized in that, The feeding structure includes a pin-shaft vibrating plate (1), a transfer mechanism (2), and a worktable (3). The worktable (3) is provided with a contour tooling plate (31), a pin hole (311) is provided on the contour tooling plate (31), and a material conveying device (32) communicating with the pin hole (311) is provided on the contour tooling plate (31). A slidable pin-shaft transport plate (33) is provided below the contour tooling plate (31). The head end of the pin-shaft transport plate (33) is provided with a pin-shaft pressing hole (331) corresponding to the pin hole (311) of the contour tooling plate (31). A positioning plate (34) that engages with the feeding part (23) of the transfer mechanism is also provided below the pin-shaft transport plate (33).

2. The feeding structure for riveting lock pins according to claim 1, characterized in that, The pin-shaft vibratory plate (1) is connected to the material feeding device (32) through a guide tube.

3. The feeding structure for riveting lock pins according to claim 1, characterized in that, The two ends of the contour tooling plate (31) are fixed on the workbench (3) by the support plate, and the positional distance ratio between the pin hole (311) of the contour tooling plate (31) and the lock housing pin mounting hole in the lock is consistent.

4. The feeding structure for riveting lock pins according to claim 1, characterized in that, The pin-shaft transport plate (33) is mounted on a sliding assembly (332) on the workbench (3). The sliding assembly (332) is a set of slide rails and sliders. The workbench (3) is also provided with a push-pull rod (333) connected to the pin-shaft transport plate (33).

5. The feeding structure for riveting lock pins according to claim 1, characterized in that, The pin-shaft transport plate (33) is provided with multiple buffer grooves (334). The buffer grooves (334) are provided with a fixing block (336) with a tension spring (335) and a connecting block (337). The connecting block (337) is connected to the push-pull cylinder (312) on the contour tooling plate (31).

6. The feeding structure for riveting lock pins according to claim 1, characterized in that, The positioning plate (34) has a pin positioning groove (341), and an annular groove (342) is provided below the pin positioning groove (341).

7. The feeding structure for riveting lock pins according to claim 1, characterized in that, The workbench (3) is provided with a support frame (35), and a downward pre-compression cylinder (36) is provided on the top plate of the support frame (35). A pre-compression assembly (37) is provided below the pre-compression cylinder (36), and the pre-compression assembly (37) is provided with a pressure column (371) at the pin pre-compression position.

8. The feeding structure for riveting lock pins according to claim 1, characterized in that, The transfer mechanism (2) includes a slide rail, a slider, and a base (21) on the slider, with a transfer cylinder (22) connected below the base (21).

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