Automatic riveting equipment for spring bolt assembly

Abstract

The utility model relates to automatic riveting equipment for a spring bolt assembly. The machine comprises a workbench, a multi-station rotary table, tool jigs, a feeding detection unit, a drilling unit, a reaming unit, a bottom hole drilling unit, a pressing rivet unit, a riveting detection unit, a discharging unit and a sorting assembly. According to the automatic riveting machine, drilling, rivet pressing and discharging can be automatically carried out on a workpiece, a large amount of labor cost is saved, the production precision and the yield are improved, and meanwhile the production efficiency is improved; the tool jig achieves the automatic opening and closing effect through a mechanical structure, the control difficulty is simplified, and the reliability of equipment operation is improved. The workpiece sorting device can sort out good workpieces and inferior-quality workpieces.

Description

Technical Field

[0001] This utility model relates to a lock manufacturing equipment, and more particularly to an automatic riveting equipment for a lock tongue assembly. Background Technology

[0002] The lock on the security door has a retractable bolt 1, and a pull rod 2 is fixedly connected to the inner end of the bolt (see attached). Figure 3 The position of the lever is controlled by the mechanical mechanism inside the lock, and the state of the bolt is switched by pushing and pulling the lever. The bolt and lever are generally fixed together by a plug-in joint, with rivets driven into the plug joint. In the current lock manufacturing industry, the traditional processing method for the riveting process after the bolt and lever are plugged in is: drilling holes in the bolt and lever assembly using a bench drill, manually placing the rivets, and then pressing the rivets with a punch press. This processing method has drawbacks such as low processing efficiency, many steps, high labor costs, poor drilling accuracy, and high operational safety risks. Summary of the Invention

[0003] This utility model provides an automatic riveting device for lock tongue components; it solves the problems of low processing efficiency, high labor costs, poor drilling accuracy, and high operational safety risks in the existing riveting process for lock tongues and pull rods.

[0004] The above-mentioned technical problems of this utility model are mainly solved by the following technical solution: an automatic riveting device for a locking tongue assembly, comprising:

[0005] A workbench, wherein a multi-station turntable is provided on the workbench, and the rotation axis of the multi-station turntable is vertically arranged;

[0006] The tooling fixtures are fixed in a circular array on the multi-station turntable for fixing the locking tongue pull rod assembly, hereinafter referred to as the workpiece;

[0007] The drilling unit is installed on the workbench and set as a drilling station;

[0008] The hole reaming unit is installed on the workbench and set as the hole reaming station;

[0009] The bottom hole drilling unit is installed on the workbench and set as the bottom hole drilling station;

[0010] The riveting unit is installed on the workbench and set as the riveting station;

[0011] The unloading unit is installed on the workbench and is set as the unloading station;

[0012] The drilling station, the reaming station, the bottom hole drilling station, the riveting station and the unloading station are sequentially distributed around the multi-station turntable, wherein the drilling station and the unloading station are further provided with a feeding station, and each station is provided with at least one tooling jig;

[0013] The riveting machine set is composed of a vibration disc, a feeding pipe, a horizontally arranged first sliding table cylinder, a rivet clamping hand and a vertically downward arranged riveting cylinder, a pipe through which the rivet can pass is communicated between the discharge end of the vibration disc and the feeding pipe, the rivet clamping hand can reciprocate between the lower side of the feeding pipe and the lower side of the riveting cylinder under the drive of the first sliding table cylinder, the rivet clamping hand can clamp the rivet falling from the feeding pipe, and the riveting cylinder can press the rivet on the rivet clamping hand into the workpiece in the tooling jig below;

[0014] The unloading machine set is composed of a support, a horizontally arranged second sliding table cylinder, a vertically downward arranged third sliding table cylinder and a vertically downward arranged finger cylinder, the third sliding table cylinder is fixed on the sliding table of the second sliding table cylinder, the finger cylinder is fixed on the sliding table of the third sliding table cylinder, the finger cylinder can move between the tooling jig and the unloading area in the station under the cooperation of the second sliding table cylinder and the third sliding table cylinder, and the finger cylinder can clamp the tool in the tooling jig.

[0015] The operation principle of the utility model is that: at the feeding station, the workpiece to be riveted is placed in the tooling jig and completely fixed by manual or automatic feeding device, then the multi-station turntable rotates the fixed angle to switch the station, the workpiece in the feeding station is transferred to the drilling station, the drilling machine set can drill the workpiece, then the drilled workpiece is transferred by the multi-station turntable and sequentially reamed and bottom hole drilled, then enters the riveting station, the vibration disc can continuously feed the rivet to the feeding pipe through the pipe, the rivet clamping hand can transfer the rivet to the upper side of the corresponding tooling jig, so that the rivet is opposite to the hole position on the workpiece, then the riveting cylinder above is provided with a push rod at the bottom, the push rod is pressed downward to press the rivet into the workpiece, then the workpiece is transferred to the unloading station, the finger cylinder moves to the upper side of the corresponding tooling jig under the cooperation of the second sliding table cylinder and the third sliding table cylinder and clamps the workpiece, then is transferred to the unloading area.

[0016] Further, the tooling jig comprises a fixed seat, a clamping block, a touch block and two horizontal connecting rods arranged in the fixed seat, the clamping block and the touch block are fixed on the two ends of the connecting rods, a reset spring is arranged between the touch block and the fixed seat, a workpiece positioning groove and an avoiding groove are arranged on the fixed seat, and the avoiding groove is used for avoiding the clamping fingers of the finger air cylinder; a center disc is arranged at the center of the multi-station turntable and fixed relative to the workbench, a stop block is arranged on the center disc and corresponds to the feeding station and the discharging station, and the stop block can extrude the touch block on the tooling jig on the corresponding station to slide to the side of compressing the reset spring. When the reset spring is compressed, the clamping block is away from the workpiece positioning groove at this time, so that the tooling jig is in a relaxed state, and the workpiece can freely enter and exit the workpiece positioning groove, otherwise, when the reset spring is reset, the clamping block tends to be close to the workpiece positioning groove, and a pressing effect on the workpiece in the workpiece positioning groove is generated, so that the tooling jig is in a fastening state. Through the above technical scheme, the tooling jig in the feeding station and the discharging station can be automatically switched to the relaxed state, and the tooling jig away from the feeding station can be automatically switched to the fastening state.

[0017] Further, the rivet clamp hand comprises a base plate fixed on the sliding table of the first sliding table air cylinder, a first clamping plate and a second clamping plate, the upper surfaces of the three are arranged at the same height, the two clamping plates are vertically connected to the base plate, and the base plate is provided with an elastic member capable of driving the two clamping plates to approach each other, so that the base plate and the two clamping plates are integrated, and a clamping hole capable of clamping a rivet is formed. The upper surface of the rivet clamp hand in normal state is flat and close to the lower opening of the feeding pipe, when the first sliding table air cylinder drives the clamping hole on the rivet clamp hand to be opposite to the feeding pipe, the rivet will automatically fall and be clamped in the clamping hole, and then the first sliding table air cylinder pushes the clamping hole to move to the position directly below the rivet pressing air cylinder. In the moving process, the upper surface of the base plate is close to the lower end of the feeding pipe all the time, for preventing the internal rivet from falling; in the pressing process of the rivet pressing air cylinder, the rivet will generate an outward force on the side wall of the clamping hole, that is, the first clamping plate and the second clamping plate, so as to push the two clamping plates to automatically turn outward, and the elastic member will push the two clamping plates to be clamped after the rivet pressing air cylinder is reset.

[0018] Further, the riveting detection work station is internally provided with a riveting detection unit, comprising a support, a vertically downward arranged air cylinder and a magnetic sensor, the air cylinder can push the magnetic sensor to approach the riveting part of the workpiece in the corresponding work fixture; the feeding detection work station is internally provided with a feeding detection unit, comprising a support and a vertically downward arranged proximity sensor, the proximity sensor is opposite to the positioning groove of the workpiece in the corresponding work fixture. The magnetic sensor in the riveting detection work station is used for detecting whether the rivet is pressed into place or whether there is a rivet; the proximity sensor in the feeding detection work station is used for detecting whether the workpiece is put into the positioning groove.

[0019] Further, the workbench in the discharging work station is provided with a discharging opening, a sorting assembly is arranged below the discharging opening, the sorting assembly comprises a first discharging groove, a second discharging groove and a sorting plate, the second discharging groove is communicated with the first discharging groove, the sorting plate is rotationally connected to the opening of the second discharging groove, and the sorting assembly is further provided with a turnover driving mechanism which can drive the sorting plate to overturn. When the proximity sensor in the riveting detection work station detects normally, the sorting plate is in an upwardly turned state, at this time, the opening of the second discharging groove is covered by the sorting plate, and the workpieces all fall from the first discharging groove; when the proximity sensor detects abnormally, the turnover driving mechanism drives the sorting plate to turn downwardly, the first discharging groove is blocked, and the workpieces slide into the second discharging groove under the guidance of the sorting plate. In this way, the good workpieces and the defective workpieces can be sorted out.

[0020] Therefore, compared with the prior art, the utility model has the following characteristics: 1. the utility model can automatically drill, press rivets and discharge workpieces, saves a large amount of manual cost, improves production precision and yield, and improves production efficiency; 2. the work fixture realizes the effect that automatically opens and closes through a mechanical structure, simplifies control difficulty, and improves the reliability of equipment operation; 3. the utility model can sort out good workpieces and defective workpieces. BRIEF DESCRIPTION OF DRAWINGS

[0021] ATTACHED Figure 1 It is the structure schematic diagram of the utility model;

[0022] ATTACHED Figure 2 It is the top view of the utility model;

[0023] ATTACHED Figure 3 It is the structure schematic diagram of the work fixture;

[0024] ATTACHED Figure 4 It is the structure schematic diagram of the feeding detection unit;

[0025] ATTACHED Figure 5 It is the structure schematic diagram of the riveting machine unit;

[0026] ATTACHEDFigure 6 is a partial view of the riveting machine group;

[0027] attached Figure 7 are two state diagrams of the rivet clamp hand;

[0028] attached Figure 8 is a structural schematic diagram of the riveting detection machine group;

[0029] attached Figure 9 is a structural schematic diagram of the blanking machine group;

[0030] attached Figure 10 is a structural schematic diagram of the sorting assembly;

[0031] attached Figure 11 is a sectional view of the sorting assembly. DETAILED DESCRIPTION

[0032] The technical scheme of the utility model will be further specifically described below by examples in combination with the drawings.

[0033] In the description of the utility model, it should be understood that the directions or position relationships indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" are based on the directions or position relationships shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model in that the indicated devices or elements must have a particular direction, be constructed and operated in a particular direction.

[0034] Example 1: see Figure 1 and Figure 2 A lock tongue assembly automatic riveting equipment, comprising:

[0035] A workbench 100, the workbench is provided with an eight-station turntable 110, the rotating shaft of the eight-station turntable is vertically arranged, and the center of the eight-station turntable is provided with a center disc 120 fixed relative to the workbench;

[0036] see Figure 3 8 sets of tooling jigs 200 are fixed on the eight-station turntable in a circumferential array and are used for fixing workpieces; the tooling jig comprises a fixed seat 210, a clamping block 220, a touch block 230 and two horizontal connecting rods 240 arranged in the fixed seat, the clamping block and the touch block are fixed to the two ends of the connecting rod, a return spring 250 is arranged between the touch block and the fixed seat, and the fixed seat is provided with a workpiece positioning groove 260 and a avoiding groove 270;

[0037] The eight tooling jigs correspond to eight production stations on the workbench, which are sequentially arranged as follows:

[0038] The loading station is provided with two grating sensors 130 fixed on the workbench. When the operator is still in the loading operation, the grating sensors can detect and control the eight-station turntable to stop rotating.

[0039] See Figure 4 The loading detection station is provided with a loading detection unit 300, including a bracket fixed on the workbench and a proximity sensor 310 vertically downward. The proximity sensor is opposite to the workpiece positioning groove in the corresponding tooling jig, for detecting whether the loading in the workpiece positioning groove is successful;

[0040] The drilling station is provided with a drilling unit 400 installed on the workbench;

[0041] The hole expanding station is provided with a hole expanding unit 500 installed on the workbench;

[0042] The bottom hole drilling station is provided with a bottom hole drilling unit 600 installed on the workbench;

[0043] The riveting station is provided with a riveting unit 700 installed on the workbench;

[0044] See Figure 8 The riveting detection station is provided with a riveting detection unit 800, including a bracket, a cylinder 810 vertically downward, and a magnetic sensor 820. The cylinder can push the magnetic sensor close to the workpiece riveting part in the corresponding tooling jig, for detecting whether the rivet is pressed into place;

[0045] The unloading station is provided with an unloading unit 900 installed on the workbench.

[0046] The center plate is provided with a stop block 140 corresponding to the loading station and the unloading station. The stop block is a guide wheel structure, which can extrude the touch block on the tooling jig in the corresponding station to slide to one side of the compression return spring.

[0047] See Figure 1 and Figure 5 The riveting unit is composed of a vibration disc 710, a feeding pipe 720, a first sliding table cylinder 730 horizontally arranged, a rivet clamping hand 740, and a riveting cylinder 750 vertically downward. A pipe 760 through which the rivet can pass is connected between the discharge end of the vibration disc and the feeding pipe. The rivet clamping hand can reciprocate between the lower side of the feeding pipe and the lower side of the riveting cylinder under the drive of the first sliding table cylinder. The rivet clamping hand can clamp the rivet falling from the feeding pipe, and the riveting cylinder can press the rivet on the rivet clamping hand into the workpiece in the tooling jig directly below;

[0048] See Figure 9The unloading unit is composed of a support, a second sliding table cylinder 920 arranged horizontally, a third sliding table cylinder 930 arranged vertically downward, and a finger cylinder 940 arranged vertically downward. The third sliding table cylinder is fixed on the sliding table of the second sliding table cylinder, and the finger cylinder is fixed on the sliding table of the third sliding table cylinder. The finger cylinder can move between the tooling fixture in the work station and the unloading area under the cooperation of the second sliding table cylinder and the third sliding table cylinder. The finger cylinder can clamp the tool in the tooling fixture. The avoiding groove in the tooling fixture is used for avoiding the clamping fingers of the finger cylinder.

[0049] The operation principle of the embodiment is as follows: at the feeding station, the workpiece to be riveted is placed into the tooling fixture and completely fixed by manual or automatic feeding device. Then the eight-station turntable switches the station by rotating a fixed angle. The workpiece in the feeding station is transferred to the drilling station. The drilling unit can drill the workpiece. Then the workpiece after drilling is sequentially expanded and drilled from the bottom under the transfer of the eight-station turntable. Then the workpiece enters the riveting station. The vibration disc can continuously feed the rivets to the feeding pipe through the pipeline. The rivet clamp hand can transfer the rivet to the upper side of the corresponding tooling fixture, so that the rivet is opposite to the hole on the workpiece. Then the riveting cylinder above is provided with a push rod at the bottom. The push rod is pressed downward to press the rivet into the workpiece. Then the workpiece is transferred to the unloading station. The finger cylinder moves to the upper side of the corresponding tooling fixture under the cooperation of the second sliding table cylinder and the third sliding table cylinder, clamps the workpiece, and then is transferred to the unloading area.

[0050] See Figure 6 and Figure 7 The rivet clamp hand includes a base plate 741 fixed on the sliding table of the first sliding table cylinder, a first clamping plate 742, and a second clamping plate 743. The upper surfaces of the three are arranged at the same height. The two clamping plates are vertically connected to the base plate. The base plate is provided with an elastic member that can drive the two clamping plates to approach each other. The base plate and the two clamping plates are integrated and form a clamping hole 744 that can clamp the rivet. In the normal state, the upper surface of the rivet clamp hand is flat and close to the lower opening of the feeding pipe. When the first sliding table cylinder drives the clamping hole on the rivet clamp hand to be opposite to the feeding pipe, the rivet will automatically fall into the clamping hole. Then the first sliding table cylinder moves the clamping hole to be directly below the riveting cylinder. During the movement, the upper surface of the base plate is close to the lower end of the feeding pipe at all times to prevent the rivet inside from falling. During the pressing process of the riveting cylinder, the rivet will generate an outward force on the side wall of the clamping hole, that is, the first clamping plate and the second clamping plate, thereby pushing the two clamping plates to automatically turn outward. After the riveting cylinder is reset, the elastic member will push the two clamping plates to clamp and reset.

[0051] See Figure 1 , Figure 10 and Figure 11, The workbench in the blanking station is provided with a blanking opening 150, and a sorting assembly 950 is arranged below the blanking opening, the sorting assembly comprises a first blanking groove 951, a second blanking groove 952 and a sorting plate 953, the second blanking groove is communicated with the first blanking groove, the sorting plate is rotationally connected to the opening of the second blanking groove, and the sorting assembly is further provided with a turnover driving mechanism 954 which can drive the sorting plate to overturn, and the turnover driving mechanism is specifically composed of a cylinder and a crank, the crank is fixed with the rotating shaft of the sorting plate, and the cylinder rod is hinged with the crank. When the proximity sensor in the riveting detection station detects normally, the sorting plate is in the upward turning state, at this time, the opening of the second blanking groove is covered by the sorting plate, and the workpieces all fall from the first blanking groove; when the proximity sensor detects abnormally, the turnover driving mechanism drives the sorting plate to turn downward, the first blanking groove is blocked, and the workpieces are guided to slide into the second blanking groove under the sorting plate. In this way, the good workpieces and the defective workpieces can be sorted out.

[0052] See Figure 2 The center disc is further provided with three optical fiber opposite-acting sensors 160 which are respectively opposite the drilling machine group, the reaming machine group and the bottom hole drilling machine group. The optical fiber opposite-acting sensors can detect the drill bit of the drilling machine group, the reaming machine group and the bottom hole drilling machine group in real time, and once the drill bit is broken, an alarm is triggered.

[0053] It is obvious to those skilled in the art that the utility model can be changed in many ways, and such changes are not considered to be out of the scope of the utility model. All such modifications obvious to those skilled in the art will be included in the scope of the present claims.

Claims

1. A lock tongue assembly automatic riveting apparatus characterized by, The utility model provides a multi-station workbench, which comprises a workbench, a multi-station turntable arranged on the workbench, a plurality of tooling fixtures arranged on the multi-station turntable, a drilling machine group arranged on the workbench and serving as a drilling station, a reamer group arranged on the workbench and serving as a reaming station, a bottom hole drilling machine group arranged on the workbench and serving as a bottom hole drilling station, a rivet pressing machine group arranged on the workbench and serving as a rivet pressing station, and a blanking machine group arranged on the workbench and serving as a blanking station. The drilling station, the reaming station, the bottom hole drilling station, the rivet pressing station and the blanking station are arranged in sequence around the multi-station turntable, wherein the drilling station and the blanking station are further provided with a feeding station, and each station is provided with at least one tooling fixture. The rivet pressing machine group comprises a vibration disc, a feeding pipe, a first sliding table cylinder arranged horizontally, a rivet clamp hand, and a rivet pressing cylinder arranged vertically downward, a pipe through which a rivet can pass is arranged between the outlet end of the vibration disc and the feeding pipe, the rivet clamp hand can reciprocate between the lower side of the feeding pipe and the lower side of the rivet pressing cylinder under the drive of the first sliding table cylinder, the rivet clamp hand can clamp a rivet falling from the feeding pipe, and the rivet pressing cylinder can press the rivet on the rivet clamp hand into a workpiece in the tooling fixture directly below. The blanking machine group comprises a support, a second sliding table cylinder arranged horizontally, a third sliding table cylinder arranged vertically downward, and a finger cylinder arranged vertically downward, the third sliding table cylinder is fixed on the sliding table of the second sliding table cylinder, the finger cylinder is fixed on the sliding table of the third sliding table cylinder, the finger cylinder can move between the tooling fixture and the blanking area in the station under the cooperation of the second sliding table cylinder and the third sliding table cylinder, and the finger cylinder can clamp and take out the tool in the tooling fixture. The tooling fixture comprises a fixed seat, a clamping block, a touch block, and two horizontal connecting rods arranged in the fixed seat, the clamping block and the touch block are fixed on the two ends of the connecting rods, a reset spring is arranged between the touch block and the fixed seat, a workpiece positioning groove and an avoidance groove are arranged on the fixed seat, the avoidance groove is used for avoiding the clamping fingers of the finger cylinder, a center disc is arranged at the center of the multi-station turntable and fixed relative to the workbench, a stop block is arranged on the center disc and corresponds to the feeding station and the blanking station, and the stop block can extrude the touch block on the tooling fixture on the corresponding station to slide to the side where the reset spring is compressed. The rivet clamp hand comprises a base plate fixed on the sliding table of the first sliding table cylinder, a first clamping plate, and a second clamping plate, the upper surfaces of the three are arranged at the same height, the two clamping plates are vertically rotatably connected to the base plate, an elastic member is arranged on the base plate and can drive the two clamping plates to move close to each other, the base plate and the two clamping plates are integrated, and a clamping hole for clamping a rivet is formed. ​ ​ ​ ​ ​ 2. The lock tongue assembly automatic riveting apparatus according to claim 1, characterized in that: ​ 3. The lock tongue assembly automatic riveting apparatus according to claim 1, characterized in that: ​ 4. The lock tongue assembly automatic riveting apparatus according to claim 2 or 3, characterized in that: The riveting detection work station is further provided with a riveting detection machine set, including a support, a vertically downward arranged air cylinder and a magnetic sensor, the air cylinder can push the magnetic sensor to approach the riveting part of the workpiece in the corresponding work fixture.

5. The lock tongue assembly automatic riveting apparatus according to claim 4, wherein: The feeding detection work station is further provided with a feeding detection machine set, including a support and a vertically downward arranged proximity sensor, the proximity sensor is opposite to the workpiece positioning groove in the corresponding work fixture.

6. The lock tongue assembly automatic riveting apparatus according to claim 4, wherein: The workbench in the discharging work station is provided with a discharging opening, the discharging opening is provided with a sorting assembly below, the sorting assembly includes a first discharging groove, a second discharging groove and a sorting plate, the second discharging groove is communicated with the first discharging groove, the sorting plate is rotationally connected to the opening of the second discharging groove, the sorting assembly is further provided with a turnover driving mechanism which can drive the sorting plate to turn over.

7. The lock tongue assembly automatic riveting apparatus according to claim 2, wherein: The center disc is further provided with three optical fiber opposite shooting sensors which are opposite to the drilling machine set, the reaming machine set and the bottom drilling machine set respectively.

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