Multi-contact circuit breaker assembly riveting device and riveting production line

Abstract

The present invention belongs to the technical field of riveting equipment, specifically a riveting device for a multi-contact circuit breaker assembly and a riveting production line. The riveting device for a multi-contact circuit breaker assembly includes a No. 1 production station, a No. 2 production station, a rod arm riveting mechanism and a moving contact riveting mechanism. A rod arm riveting mechanism is arranged above the front of the No. 1 production station, and two groups of moving contact riveting mechanisms are arranged above the No. 2 production station. The positioning fixture seat of the present invention is provided with two groups of outer notches and two groups of inner notches, so that the positioning fixture seat can clamp four rod arm assemblies at a time, and then the mounting plate is rotated at the end of the U-shaped rail by a handle to ensure that the positioning fixture seat can realize the rotation switching of the front and rear stations, and then the positioning fixture seat is driven to move from one end of the U-shaped rail to the other end by pulling the handle to ensure that the positioning fixture seat can rotate and switch the front and rear stations again after changing the horizontal placement position; the electric riveting press can realize the all-round riveting processing of the rod arm assembly.

Description

Technical Field

[0001] The invention belongs to the technical field of riveting equipment, and in particular relates to a riveting device for a multi-contact circuit breaker assembly and a riveting production line. Background Art

[0002] A circuit breaker is a circuit protection device that automatically disconnects the circuit when the current in the circuit exceeds the rated value to protect the circuit and equipment from damage. A multi-contact circuit breaker has multiple contacts and can connect multiple circuits at the same time to protect multiple circuits.

[0003] The working principle of the riveting production line is: the workpiece to be riveted is placed on the conveyor, and the workpiece is sent to the working area of ​​the riveting machine through the conveyor. Then the riveting machine performs riveting operations on the workpiece, and after the riveting is completed, the workpiece is sent out of the working area. When producing circuit breaker components, a matching riveting equipment production line is usually required to mass produce circuit breaker components.

[0004] When using existing riveting equipment to rivet circuit breaker components, the components of the circuit breaker need to be assisted by multiple clamps and tools. When using multiple clamps to clamp different positions of the clamped components for multi-step riveting, different clamps need to be repeatedly replaced under the riveting equipment, which requires a larger size of the riveting equipment, and more manpower is required to operate when riveting the components in multiple directions. Summary of the invention

[0005] The object of the present invention is to provide a riveting device and a riveting production line for a multi-contact circuit breaker assembly to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: a multi-contact circuit breaker assembly riveting device, comprising a No. 1 production station, a No. 2 production station, a lever arm riveting mechanism and a moving contact riveting mechanism,

[0007] A lever arm riveting mechanism is arranged above the front of the No. 1 production station, and two sets of moving contact riveting mechanisms are arranged above the No. 2 production station.

[0008] Preferably, the lever arm riveting mechanism comprises an electric riveting press installed on the upper side of the No. 1 production station, a riveting head is installed on the bottom output shaft of the electric riveting press, an operating table is installed on the lower side of the electric riveting press, and a U-shaped rail is opened on the upper side of the operating table;

[0009] The upper side of the operating table is provided with a mounting plate and a positioning fixture seat in sequence, the mounting plate and the positioning fixture seat are installed by screws, an auxiliary wheel is connected through the middle of the mounting plate, the lower end of the auxiliary wheel is movably connected to the U-shaped rail, and four groups of V-shaped limit openings are symmetrically opened on both sides of the mounting plate;

[0010] A positioning block, wherein the positioning block is installed on the top of the positioning fixture seat by screws, and the positioning fixture seat is provided with two groups of outer notches that are connected to each other on one side edge close to the positioning block, and the positioning fixture seat is provided with two groups of inner notches that are symmetrically distributed on the other side edge close to the positioning block, and the upper side of the positioning fixture seat is integrally formed with two symmetrically distributed prism seats, and the upper edge of the outer notch and the top of the prism seat are welded with a push rod, and the positioning fixture seat is provided with a shelf channel below the inner notch, and handles are installed on the front and rear side surfaces of the positioning fixture seat.

[0011] Preferably, an anti-deflection component is provided on one side of the operating table close to the U-shaped rail, a rectangular hole is provided on the end side of the operating table close to the U-shaped rail, and a guide seat is installed in the rectangular hole, the tail of the guide seat is connected to a mounting bracket, and a metal induction switch is installed at the tail end of the mounting bracket;

[0012] A telescopic rod is inserted into the reserved cavity in the middle of the guide seat, a buffer spring is sleeved on the outer side of the telescopic rod, the tail end of the telescopic rod is inserted into the front end side of the mounting bracket, and an annular cavity is opened on the outer peripheral side of the front end of the telescopic rod.

[0013] Preferably, four groups of positioning pins are installed at the bottom of the positioning fixture seat, and the bottom ends of the four groups of positioning pins are inserted into the limiting openings;

[0014] A docking hole is formed through the middle of the lower end of the locating pin, and grooves are symmetrically formed on the upper and lower sides of the inner wall of the docking hole. The groove is movably connected to the eccentric rotating shaft of the eccentric wheel, and a return spring is fixed between the surface of the eccentric wheel close to the eccentric rotating shaft and the groove.

[0015] Preferably, the moving contact riveting mechanism comprises a pad installed on the No. 2 production station, a U-shaped seat frame is installed in the middle of the upper side of the pad, and riveting cylinders are symmetrically installed on both sides of the U-shaped seat frame, and a No. 1 pad and a No. 2 pad are respectively installed at both ends of the upper side of the pad;

[0016] A No. 2 push-pull clamp is installed on the upper side of the No. 1 pad, and a No. 3 push-pull clamp is installed on the upper side of the No. 2 pad. An intermediate seat is rotatably connected to the top of the pad, and the intermediate seat is located between the No. 1 pad and the No. 2 pad. A detachable buckle plate is inserted in the upper recess of the intermediate seat, and a No. 5 diffuse reflection photoelectric switch is installed on the side of the pad close to the No. 1 pad.

[0017] A riveting production line, comprising a No. 3 production station and a storage station, wherein a No. 2 production station is arranged on one side of the No. 1 production station, and a No. 3 production station is arranged on the side of the No. 2 production station away from the No. 1 production station, wherein the No. 1 production station, the No. 2 production station and the No. 3 production station are arranged in a U shape, and a storage station is arranged on the side of the No. 3 production station away from the No. 2 production station;

[0018] A front conveyor line is installed between the No. 1 production station and the No. 2 production station, and a rear conveyor line is installed between the No. 2 production station and the No. 3 production station. The front conveyor line is located in the front operation area of ​​the No. 2 production station, and the rear conveyor line is located in the rear storage area of ​​the No. 2 production station. Roller silos are installed inside the No. 1 production station, the No. 2 production station, the No. 3 production station and the storage station;

[0019] A spring cage clamping mechanism is arranged above the middle of the No. 1 production station, a cylinder assembly clamping seat is arranged on the side of the spring cage clamping mechanism away from the rod arm riveting mechanism, and the cylinder assembly clamping seat is mounted on the No. 1 production station by screws, and a moving contact clamping mechanism is arranged above the tail of the No. 1 production station.

[0020] Preferably, the spring cage clamping mechanism comprises a manual punching machine installed on the first production station, a punching head is installed on the output shaft of the manual punching machine, a protective cover shell is installed on the lower side of the manual punching machine close to the punching head, and slide rails are symmetrically arranged on the manual punching machine, and the slide rails are slidably connected to the slide table;

[0021] A stopper is fixed in the middle of the slide, a support is fixed on one side of the slide close to the stopper, a knob is rotatably connected in the middle of the support, a clamping block is threadedly connected on the outer side of the output screw of the knob, and the clamping block and the stopper are used to limit the spring cage and the rod arm.

[0022] Preferably, the cylinder assembly clamping seat is a right-angle structure, and a guide rail seat and a push rod seat that can slide and adjust the position are respectively provided at both ends of the cylinder assembly clamping seat, and a placement block installed with the cylinder assembly clamping seat is provided on one side of the push rod seat, and an inner concave seat installed with the cylinder assembly clamping seat is provided between the guide rail seat and the placement block;

[0023] One end of the guide rail seat is connected to a push-pull clamp No. 1, the upper side of the guide rail seat is slidably connected to a guide block, the guide block is connected to one end of the push-pull clamp No. 1, and the end of the guide block away from the push-pull clamp No. 1 is provided with a spring positioning port;

[0024] An arched shielding cover is sleeved on the outer side of the push rod seat, a push rod piece is installed in the middle of the push rod seat, and a placement cavity is opened on the upper side of the placement block, and the placement cavity is flush with the height of the push rod piece.

[0025] Preferably, the moving contact clamping mechanism comprises a base plate installed on the No. 2 production station, the top of the base plate is respectively installed with a socket, a clamping seat, an extrusion cylinder and a tight support seat, a No. 1 diffuse reflection photoelectric switch is installed on the side wall of the socket, the extrusion cylinder and the tight support seat are relatively installed at both ends of the upper side of the base plate, and the tight support seat is used to laterally abut the cylinder assembly;

[0026] Two groups of horizontal rods are fixed on the surface of the extrusion cylinder, and a sliding block is provided on the outer sliding sleeve of the horizontal rod, a straight plug plate is installed in the middle of the sliding block, and a flat groove for docking with the straight plug plate is opened on the upper side of the socket;

[0027] A first horizontal seat and a second horizontal seat are respectively installed on both sides of the upper part of the card seat, and levers are arranged inside the first horizontal seat and the second horizontal seat, and the axis lines of the two groups of levers coincide with each other. A concave placement groove is installed at the front end of the second horizontal seat.

[0028] Preferably, a positioning detection mechanism is provided on one side of the No. 1 production station close to the moving contact clamping mechanism, and the positioning detection mechanism comprises a fixing frame installed on the No. 1 production station, and a No. 2 diffuse reflection photoelectric switch and a No. 3 diffuse reflection photoelectric switch are respectively installed obliquely on both sides of the top of the fixing frame, and a No. 4 diffuse reflection photoelectric switch is installed in the center of the top of the fixing frame;

[0029] There are a total of five No. 2 diffuse reflection photoelectric switches and No. 3 diffuse reflection photoelectric switches, among which there are three No. 2 diffuse reflection photoelectric switches and two No. 3 diffuse reflection photoelectric switches. The three No. 2 diffuse reflection photoelectric switches and the two No. 3 diffuse reflection photoelectric switches are staggered, and the No. 2 diffuse reflection photoelectric switch and the No. 3 diffuse reflection photoelectric switch are used to stagger the sensing moving contacts.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] 1. The positioning fixture seat of the present invention is provided with two groups of outer notches and two groups of inner notches, so that the positioning fixture seat can clamp four arm assemblies at a time, and then the mounting plate is rotated at the end of the U-shaped rail by the handle to ensure that the positioning fixture seat can realize the rotation switching of the front and rear workstations, and then the positioning fixture seat is driven to move from one end of the U-shaped rail to the other end by pulling the handle to ensure that the positioning fixture seat can be rotated and switched again after changing the horizontal placement position; the electric riveting press can realize the full-range riveting processing of the arm assembly;

[0032] 2. The present invention rotates the positioning fixture seat and the mounting plate by the handle, so that the auxiliary wheel rotates at the end of the U-shaped rail, thereby realizing the switching of the riveting position, and the eccentric wheel inside the positioning pin is clamped with the annular cavity at the front end of the telescopic rod, so that the position of the positioning fixture seat is limited by the combination of the eccentric wheel and the telescopic rod, and when the lever arm assembly is riveted, the positioning fixture seat of the lever arm riveting mechanism can be guaranteed to have an anti-deviating effect, thereby ensuring the accuracy of the riveting operation of the lever arm assembly of the circuit breaker;

[0033] 3. When the present invention is used, the lever arm and the spring cage are placed between the abutment block and the stopper in sequence, and the abutment block is driven by the operating knob and the thread of the abutment block, so that the abutment block pushes the spring cage forward in the lever arm to fit the stopper. At the same time, when the abutment block is inserted into the lever arm, the convex columns on both sides limit the edges of the lever arm, thereby preventing the lever arm and the spring cage from being offset during clamping.

[0034] 4. The present invention docks the elastic gasket with the reserved groove on the side of the moving contact, and then plugs the five moving contacts into the flat groove of the socket. By starting the extrusion cylinder, the sliding block and the straight plug-in plate are driven to move, so that the straight plug-in plate squeezes the contact along the flat groove and slides it into the designated docking position of the cylinder assembly. At the same time, by pushing the levers in the No. 1 cross seat and the No. 2 cross seat, the lever in the No. 2 cross seat restricts and clamps the cylinder assembly, the moving contact and the elastic gasket through the insertion shaft, thereby realizing the rapid assembly of the moving contact of the circuit breaker. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the three-dimensional layout structure of the riveting production line of the present invention;

[0036] Figure 2 It is a schematic diagram of the three-dimensional layout structure of the production station of the present invention;

[0037] Figure 3 It is a three-dimensional structural schematic diagram of the lever arm riveting mechanism of the present invention;

[0038] Figure 4 It is a front view structural schematic diagram of the lever arm riveting mechanism of the present invention;

[0039] Figure 5 It is a schematic diagram of the three-dimensional structure of the operating table of the present invention;

[0040] Figure 6 It is a schematic diagram of the first three-dimensional structure of the positioning tool seat of the present invention;

[0041] Figure 7 A second three-dimensional structural schematic diagram of a positioning tool seat of the present invention;

[0042] Figure 8 It is a schematic diagram of the three-dimensional structure of the anti-deflection component of the present invention;

[0043] Fig. 9 It is a schematic diagram of the three-dimensional structure of the telescopic rod and the positioning pin docking of the present invention;

[0044] Fig.10 A schematic diagram of the three-dimensional structure of a spring cage clamping mechanism installed on the protective cover shell of the present invention;

[0045] Fig.11 A schematic diagram of the three-dimensional structure of the spring cage clamping mechanism derived from the protective cover shell of the present invention;

[0046] Fig.12 It is a three-dimensional structural schematic diagram of the cylinder assembly clamping seat of the present invention;

[0047] Fig.13 It is a three-dimensional exploded structural schematic diagram of the cylinder assembly clamping seat of the present invention;

[0048] Fig.14 It is a schematic diagram of the three-dimensional structure of the guide block of the present invention;

[0049] Fig.15 It is a three-dimensional structural schematic diagram of the movable contact clamping mechanism of the present invention;

[0050] Fig.16 It is a three-dimensional exploded structural schematic diagram of the movable contact clamping mechanism of the present invention;

[0051] Fig.17 It is a three-dimensional structural schematic diagram of the moving contact riveting mechanism of the present invention;

[0052] Fig.18 It is a three-dimensional exploded structural schematic diagram of the moving contact riveting mechanism of the present invention;

[0053] Fig.19 It is a three-dimensional structural schematic diagram of a multi-contact circuit breaker assembly product of the present invention;

[0054] Fig. 20 It is a schematic diagram of the three-dimensional exploded structure of the multi-contact circuit breaker assembly product of the present invention.

[0055] In the figure: 1, production station No. 1; 2, production station No. 2; 3, production station No. 3; 4, storage station; 5, front conveyor line; 6, rear conveyor line; 7, roller silo; 8, lever arm riveting mechanism; 801, electric riveting press; 801a, riveting head; 802, operating table; 803, U-shaped rail; 804, positioning fixture seat; 804a, positioning block; 804b, outer notch; 804c, ejector rod; 804d, inner notch; 804e, shelf channel; 804f, handle; 805, mounting plate; 805a, limit opening; 806, auxiliary wheel; 807, anti-bias assembly; 807a, guide seat; 807b, mounting bracket; 807c, metal induction switch; 807d, telescopic rod; 807e, buffer spring; 807f, annular cavity; 808, positioning pin; 808a, docking hole; 808b, groove; 808c, eccentric wheel; 808d, reset spring; 9, spring cage clamping mechanism; 901, manual punching machine; 902, punching head; 903, protective cover shell; 904, slide rail; 905, slide table; 906, stopper; 907, support; 908, knob; 909, tight Block; 10, cylinder assembly clamping seat; 1001, inner recessed seat; 1002, guide rail seat; 1003, push-pull type clamp No. 1; 1004, guide block; 1005, spring positioning port; 1006, placement block; 1007, placement cavity; 1008, push rod seat; 1009, push rod member; 11, moving contact clamping mechanism; 1101, bottom plate; 1102, socket; 1103, card seat; 1104, extrusion cylinder; 1105, sliding block; 1105a, straight plug board; 1106, tight support seat; 1107, diffuse reflection photoelectric switch No. 1 ; 1108, No. 1 horizontal seat; 1109, No. 2 horizontal seat; 1110, lever; 12, positioning detection mechanism; 1201, No. 2 diffuse reflection photoelectric switch; 1202, No. 3 diffuse reflection photoelectric switch; 1203, No. 4 diffuse reflection photoelectric switch; 13, moving contact riveting mechanism; 1301, pad; 1302, riveting cylinder; 1303, No. 1 pad; 1304, No. 2 pad; 1305, No. 2 push-pull fixture; 1306, No. 3 push-pull fixture; 1307, middle seat; 1308, buckle plate; 1309, No. 5 diffuse reflection photoelectric switch. DETAILED DESCRIPTION

[0056] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0057] See also Figure 1-Figure 7The present invention provides a technical solution: a riveting device for a multi-contact circuit breaker assembly, comprising a No. 1 production station 1, a No. 2 production station 2, a lever arm riveting mechanism 8 and a moving contact riveting mechanism 13, wherein the lever arm riveting mechanism 8 is arranged above the front of the No. 1 production station 1, and two sets of moving contact riveting mechanisms 13 are arranged above the No. 2 production station 2;

[0058] The lever arm riveting mechanism 8 includes an electric riveting press 801 installed on the upper side of the No. 1 production station 1, a riveting head 801a is installed on the bottom output shaft of the electric riveting press 801, an operating table 802 is installed on the lower side of the electric riveting press 801, and a U-shaped rail 803 is opened on the upper side of the operating table 802;

[0059] The upper side of the operating table 802 is provided with a mounting plate 805 and a positioning fixture seat 804 in sequence, the mounting plate 805 and the positioning fixture seat 804 are mounted by screws, an auxiliary wheel 806 is connected through the middle of the mounting plate 805, the lower end of the auxiliary wheel 806 is movably connected to the U-shaped rail 803, and four groups of V-shaped limiting openings 805a are symmetrically opened on both sides of the mounting plate 805;

[0060] The positioning block 804a is installed on the top of the positioning fixture seat 804 by screws. The positioning block 804a has an isosceles trapezoidal structure. The isosceles hypotenuse of the positioning block 804a is against the outer surface of the lever arm, which facilitates the positioning and limiting of the lever arm. The positioning fixture seat 804 is provided with two groups of connected outer notches 804b on one side edge close to the positioning block 804a, and the positioning fixture seat 804 is provided with two groups of symmetrically distributed inner notches 804d on the other side edge close to the positioning block 804a. The upper side of the positioning fixture seat 804 is integrally formed with two symmetrically distributed prism seats, and the upper edge of the outer notch 804b and the top of the prism seat are welded with a push rod 804c. The positioning fixture seat 804 is provided with a shelf channel 804e below the inner notch 804d, and handles 804f are installed on the front and rear surfaces of the positioning fixture seat 804.

[0061] By setting the positioning fixture seat 804, in specific implementation, firstly place the gasket in the reserved hole of the inner notch 804d, then position and dock the inner side surfaces of the two lever arms in the two inner notches 804d respectively, so that the lower side of the lever arm in the inner notch 804d docks in the shelf channel 804e, and then start the electric riveting press 801 to drive the riveting head 801a to move downward, so that the gasket can be riveted to the lever arm. Since the two inner notches 804d are symmetrically arranged on the positioning fixture seat 804, the gaskets on both sides of the lever arm can be riveted step by step through the two inner notches 804d.

[0062] Then, place the connecting rod rivet at the designated position on the top of the positioning fixture 804, connect one end of the connecting rod sheet to the connecting rod rivet, and then place the other end of the connecting rod sheet on the prism seat, and then position and dock the outer side surfaces of the two lever arms that have completed the riveting of the gasket in the two outer notches 804b respectively, and abut the side edges of the lever arms at the outer notches 804b through the top rod 804c, and at the same time, abut the outer surface of the lever arm through the isosceles trapezoidal structure of the positioning block 804a, so that the lever arm and the connecting rod sheet can be limitedly docked; then, the electric riveting press 801 drives the riveting head 801a to move downward, so that the connecting rod sheet can be riveted to the lever arm through the connecting rod rivet, and because the two outer notches 804b are symmetrically arranged on the positioning fixture 804, the connecting rod sheets on both sides of the lever arm can be riveted step by step through the two outer notches 804b;

[0063] When the auxiliary wheel 806 at the bottom of the mounting plate 805 is driven to rotate at the end of the U-shaped rail 803 by pulling the handle 804f, two of the limit openings 805a at the diagonal positions on both sides of the mounting plate 805 can be brought close to the anti-deflection component 807 to ensure that the positioning fixture seat 804 can be rotated and switched to the front and rear positions, so that the riveting head 801a can switch the riveting of the gasket on the lever arm and the connecting rod rivet.

[0064] By pulling the handle 804f, the auxiliary wheel 806 at the bottom of the mounting plate 805 is driven to move along the U-shaped rail 803, so that the positioning fixture seat 804 and the mounting plate 805 are moved from one end of the U-shaped rail 803 to the other end. At the same time, the positioning fixture seat 804 is rotated to make the other two limit openings 805a at the diagonal positions on both sides of the mounting plate 805 close to the anti-deviation component 807. While ensuring that the positioning fixture seat 804 can be rotated and switched between the front and rear workstations again after changing the horizontal placement position, the gasket of the arm assembly and the connecting rod rivet can be fully riveted.

[0065] See also Figure 5-Figure 9 An anti-deflection component 807 is provided on one side of the operating table 802 close to the U-shaped rail 803, a rectangular hole is provided on the port side of the operating table 802 close to the U-shaped rail 803, and a guide seat 807a is installed in the rectangular hole, and a mounting bracket 807b is connected to the tail of the guide seat 807a, and a metal induction switch 807c is installed at the tail end of the mounting bracket 807b;

[0066] A telescopic rod 807d is inserted into the reserved cavity in the middle of the guide seat 807a, a buffer spring 807e is sleeved on the outer side of the telescopic rod 807d, the tail end of the telescopic rod 807d is inserted into the front end side of the mounting bracket 807b, and an annular cavity 807f is opened on the outer peripheral side of the front end of the telescopic rod 807d;

[0067] Four sets of positioning pins 808 are installed at the bottom of the positioning fixture seat 804, and the bottom ends of the four sets of positioning pins 808 are inserted into the limiting openings 805a;

[0068] A docking hole 808a is provided through the middle of the lower end of the locating pin 808, and grooves 808b are symmetrically provided on the upper and lower sides of the inner wall of the docking hole 808a. The groove 808b is movably connected to the eccentric rotating shaft of the eccentric wheel 808c, and a return spring 808d is fixed between the surface of the eccentric wheel 808c close to the eccentric rotating shaft and the groove 808b. The rotation of the eccentric wheel 808c around the eccentric rotating shaft will cause the return spring 808d to lengthen or contract, so that the connection or disconnection with the telescopic rod 807d can be achieved by adjusting the position of the eccentric wheel 808c.

[0069] In a specific implementation, when the positioning fixture seat 804 drives the limit opening 805a to approach the anti-deflection component 807, the positioning pin 808 inserted in the limit opening 805a is pressed and contacted with the front end of the telescopic rod 807d, so that the docking hole 808a of the positioning pin 808 and the telescopic rod 807d can be docked. When docking, the telescopic rod 807d is squeezed and telescopically moved on one side of the mounting bracket 807b through the buffer spring 807e. When the eccentric wheel 808c in the docking hole 808a and the front end of the telescopic rod 807d are pressed against each other, , the eccentric wheel 808c will lengthen the reset spring 808d around the eccentric rotating axis. When the two groups of eccentric wheels 808c in the positioning pin 808 correspond to the annular cavity 807f, the eccentric wheel 808c loses the extrusion force, causing the reset spring 808d to automatically shorten and push the eccentric wheel 808c to be stuck in the annular cavity 807f, ensuring that the positioning pin 808 and the front end of the telescopic rod 807d are limitedly connected, so that when the lever arm assembly is riveted, the positioning fixture seat 804 of the lever arm riveting mechanism 8 can be guaranteed to have an anti-deviating effect, thereby ensuring the accuracy of the riveting operation;

[0070] At the same time, when the telescopic rod 807d and the eccentric wheel 808c are squeezed, the telescopic rod 807d squeezes the buffer spring 807e to make it telescopically move. Through the circumferential rotation of the positioning tooling seat 804 and the mounting plate 805, the two sets of eccentric wheels 808c in the positioning pin 808 can be stuck in the annular cavity 807f on the outer peripheral side of the telescopic rod 807d. At this time, the tail of the telescopic rod 807d moving in a straight line will approach the metal sensing switch 807c, so that the built-in circuit of the metal sensing switch 807c is connected to generate an electrical signal. The metal sensing switch 807c can sense the extrusion and movement of the telescopic rod 807d, and transmit the electrical signal of the built-in circuit of the metal sensing switch 807c to the matching PLC controller, so that the PLC controller controls the electric riveting press 801 to drive the riveting head 801a on the output shaft to press down to perform the riveting operation;

[0071] On the contrary, when the reverse operating handle 804f drives the positioning tooling seat 804 to rotate in the opposite direction, the eccentric wheel 808c in the positioning pin 808 will be disengaged from the annular cavity 807f outside the telescopic rod 807d, and at the same time, the buffer spring 807e can push the telescopic rod 807d to slide in the opposite direction and disengage from the metal sensing switch 807c, so that the built-in circuit of the metal sensing switch 807c is disconnected to generate an electrical signal, thereby facilitating the PLC controller to control the electric riveting machine 801 to drive the riveting head 801a on the output shaft to move up and disengage from the riveted part.

[0072] See also Figure 2 , Fig.17 and Fig.18 The moving contact riveting mechanism 13 includes a backing plate 1301 installed on the second production station 2, a U-shaped seat frame is installed in the middle of the upper side of the backing plate 1301, and riveting cylinders 1302 are symmetrically installed on both sides of the U-shaped seat frame, and a first cushion block 1303 and a second cushion block 1304 are respectively installed at both ends of the upper side of the backing plate 1301;

[0073] A push-pull clamp No. 2 1305 is installed on the upper side of the No. 1 pad 1303, a push-pull clamp No. 3 1306 is installed on the upper side of the No. 2 pad 1304, an intermediate seat 1307 is rotatably connected to the top of the pad 1301, and the intermediate seat 1307 is located between the No. 1 pad 1303 and the No. 2 pad 1304, a detachable buckle plate 1308 is inserted in the upper recess of the intermediate seat 1307, and a diffuse reflection photoelectric switch No. 5 1309 is installed on the side of the pad 1301 close to the No. 1 pad 1303.

[0074] In the specific implementation, the block assembly of the cylinder assembly is placed in the second cushion block 1304, the moving contact is overlapped on the middle seat 1307, the cylinder assembly is limited by operating the third push-pull clamp 1306, and then the riveting cylinders 1302 on both sides of the U-shaped seat frame are started to squeeze and rivet the insertion shaft of the limiting cylinder assembly, the moving contact and the elastic gasket;

[0075] Place the clamped spring cage and lever arm assembly on the No. 1 cushion block 1303, rotate the middle seat 1307 to buckle it on the upper side of the lever arm assembly, and press the buckle plate 1308 on the top of the spring cage, then insert the plunger and contact pressure spring into the spring cage, and then push the plunger and contact pressure spring into the spring cage by operating the No. 2 push-pull clamp 1305;

[0076] Then, the riveted cylinder assembly and the moving contact assembly and the spring cage and the lever arm assembly are taken out, and the two parts of the assembly are manually assembled, thereby realizing the riveting assembly of the multi-contact circuit breaker assembly.

[0077] See also Figure 1 and Figure 2A riveting production line includes a No. 3 production station 3 and a storage station 4, a No. 2 production station 2 is arranged on one side of the No. 1 production station 1, a No. 3 production station 3 is arranged on the side of the No. 2 production station 2 away from the No. 1 production station 1, the No. 1 production station 1, the No. 2 production station 2 and the No. 3 production station 3 are U-shaped, and a storage station 4 is arranged on the side of the No. 3 production station 3 away from the No. 2 production station 2;

[0078] A front conveyor line 5 is installed between production station No. 1 and production station No. 2, and a rear conveyor line 6 is installed between production station No. 2 and production station No. 3. The front conveyor line 5 is located in the front operating area of ​​production station No. 2, and the rear conveyor line 6 is located in the rear storage area of ​​production station No. 2. Roller silos 7 are installed inside production station No. 1, production station No. 2, production station No. 3 and storage station 4.

[0079] During specific implementation, the roller silo 7 arranged in the No. 1 production station 1, the No. 2 production station 2 and the No. 3 production station 3 is used to roll the raw materials to the front operating area, and the roller silo 7 arranged in the storage station 4 is used to roll the complete products to the rear storage area. The raw materials are transported from the No. 1 production station 1 to the No. 2 production station 2 through the front conveyor line 5, and the circuit breaker finished product is transported from the No. 2 production station 2 to the No. 3 production station 3 through the rear conveyor line 6 to realize the export of the finished product, thereby ensuring that the riveting production line performs assembly line production through the conveying sequence.

[0080] See also Figure 1 and Figure 2 A spring cage clamping mechanism 9 is arranged above the middle of the No. 1 production station 1, a cylinder assembly clamping seat 10 is arranged on the side of the spring cage clamping mechanism 9 away from the rod arm riveting mechanism 8, and the cylinder assembly clamping seat 10 is installed with the No. 1 production station 1 by screws, and a moving contact clamping mechanism 11 is arranged above the tail of the No. 1 production station 1.

[0081] See also Fig.10 and Fig.11 The spring cage clamping mechanism 9 includes a manual punching machine 901 installed on the first production station 1, a punching head 902 is installed on the output shaft of the manual punching machine 901, a protective cover shell 903 is installed on the lower side of the manual punching machine 901 close to the punching head 902, and a slide rail 904 is symmetrically arranged on the manual punching machine 901, and the slide rail 904 is slidably connected to the slide table 905;

[0082] A stopper 906 is fixed in the middle of the slide 905, and a support 907 is fixed on one side of the slide 905 close to the stopper 906. A knob 908 is rotatably connected to the middle of the support 907. A clamping block 909 is threadedly connected to the outer side of the output screw of the knob 908. The threaded transmission between the knob 908 and the clamping block 909 facilitates the position adjustment of the clamping block 909. The clamping block 909 and the stopper 906 are used to limit the spring cage and the rod arm. Bosses for abutting and limiting the edges of the rod arm sides are fixed on both sides of the clamping block 909.

[0083] In specific implementation, after the riveting process of the lever arm and the connecting rod sheet of the circuit breaker is completed, the lever arm and the spring cage are placed between the abutment block 909 and the stopper 906 in sequence, and then the knob 908 is rotated so that the knob 908 is threadedly transmitted with the abutment block 909 when it is rotated. Since the lower side plane of the abutment block 909 is placed on the slide 905, the threaded transmission between the knob 908 and the abutment block 909 can drive the abutment block 909 to push the spring cage forward in the lever arm to fit with the stopper 906. At the same time, when the abutment block 909 is inserted into the lever arm, the convex columns on both sides will limit the two side edges of the lever arm to prevent the lever arm and the spring cage from being offset during clamping.

[0084] When the lever arm and the spring cage are initially clamped on the slide 905, the slide 905 is slid along the slide rail 904 by pushing the knob 908, and the slide 905 is sent into the protective cover shell 903. When the slide 905 moves to the extreme position, the manual punching machine 901 is operated to drive the punch head 902 to press down, so that the punch head 902 squeezes the spring cage downward, so that the spring cage and the lever arm are engaged and installed.

[0085] See also Figure 12-14 The cylinder assembly clamping seat 10 is of a right-angle structure, and a guide rail seat 1002 and a push rod seat 1008 that can slide and adjust the position are respectively provided at both ends of the cylinder assembly clamping seat 10, and a placement block 1006 installed with the cylinder assembly clamping seat 10 is provided on one side of the push rod seat 1008, and an inner concave seat 1001 installed with the cylinder assembly clamping seat 10 is provided between the guide rail seat 1002 and the placement block 1006;

[0086] One end of the guide rail seat 1002 is connected to a push-pull clamp 1003, and a guide block 1004 is slidably connected to the upper side of the guide rail seat 1002. The guide block 1004 is connected to one end of the push-pull clamp 1003, and a spring positioning hole 1005 is provided at one end of the guide block 1004 away from the push-pull clamp 1003;

[0087] An arched shielding cover is sleeved on the outer side of the push rod seat 1008. When the arched shielding cover and the push rod seat 1008 move, the plate-type spindle can be prevented from detaching from the placement cavity 1007 of the placement block 1006. A push rod member 1009 is installed in the middle of the push rod seat 1008. A placement cavity 1007 is opened on the upper side of the placement block 1006. The placement cavity 1007 is flush with the height of the push rod member 1009, which facilitates the push rod member 1009 to accurately extrude the plate-type spindle.

[0088] During the specific implementation, the block assembly and the locking plate of the cylinder assembly are inserted into the inner recess 1001, and then the torque spring is clamped in the spring positioning hole 1005 at the front end of the guide block 1004, and then the guide block 1004 is pushed to slide along the guide rail seat 1002 by operating the No. 1 push-pull clamp 1003. When the guide block 1004 drives the torque spring in the spring positioning hole 1005 to be inserted between the block assembly and the locking plate of the cylinder assembly, the plate-type spindle is placed in the placement cavity 1007 of the placement block 1006, and the push rod seat 1008 is operated to drive the push rod member 1009 to be inserted into the placement cavity 1007, so that the push rod member 1009 pushes the plate-type spindle to combine and clamp the block assembly, the locking plate and the torque spring of the cylinder assembly; conversely, when the No. 1 push-pull clamp 1003 and the push rod seat 1008 are operated in reverse, the cylinder assembly that has been clamped in the inner recess 1001 can be taken out.

[0089] See also Fig.15 and Fig.16 The moving contact clamping mechanism 11 includes a bottom plate 1101 installed on the second production station 2, and a socket 1102, a clamping seat 1103, an extrusion cylinder 1104 and a tight support seat 1106 are respectively installed on the top of the bottom plate 1101. A diffuse reflection photoelectric switch 1107 is installed on the side wall of the socket 1102. The extrusion cylinder 1104 and the tight support seat 1106 are relatively installed at both ends of the upper side of the bottom plate 1101. The tight support seat 1106 is used to laterally abut the cylinder assembly;

[0090] Two groups of horizontal rods are fixed on the surface of the extrusion cylinder 1104, and a sliding block 1105 is provided on the outer sliding sleeve of the horizontal rod. A straight plug plate 1105a is installed in the middle of the sliding block 1105. A flat groove for docking with the straight plug plate 1105a is provided on the upper side of the socket 1102. The sliding connection between the straight plug plate 1105a and the flat groove can assist in the connection between the extrusion push contact and the cylinder assembly.

[0091] A first horizontal seat 1108 and a second horizontal seat 1109 are respectively installed on both sides of the upper part of the card seat 1103. The first horizontal seat 1108 and the second horizontal seat 1109 are both provided with a lever 1110 inside. The axis lines of the two sets of levers 1110 coincide with each other. A concave placement groove is installed at the front end of the second horizontal seat 1109.

[0092] During the specific implementation, the clamped cylinder assembly is placed upside down on the clamping seat 1103, and the block components of the cylinder assembly are sensed and detected by the diffuse reflection photoelectric switch 1107. The side of the cylinder assembly is limited by pressing the support seat 1106, so that the elastic gasket is docked with the reserved groove on the side of the moving contact, and grease is used for lubrication. Then, the five moving contacts are plugged into the flat groove of the socket 1102, so that the elastic gasket is flattened, and then the extrusion cylinder 1104 is started to drive the sliding block 1105 and the straight plug-in board 1105a to move, so that the straight plug-in board 1105a squeezes the contact along the flat groove and slides into the designated docking position of the cylinder assembly.

[0093] Then, the insertion shaft is placed in the concave placement groove, and at the same time, the lever 1110 in the No. 1 cross seat 1108 and the No. 2 cross seat 1109 is pushed so that the lever 1110 in the No. 2 cross seat 1109 can limit and clamp the cylinder assembly, the moving contact and the elastic gasket through the insertion shaft.

[0094] See also Fig.15 and Fig.16 A positioning detection mechanism 12 is provided on one side of the No. 1 production station 1 close to the moving contact clamping mechanism 11. The positioning detection mechanism 12 includes a fixed frame installed on the No. 1 production station 1, and a No. 2 diffuse reflection photoelectric switch 1201 and a No. 3 diffuse reflection photoelectric switch 1202 are respectively installed obliquely on both sides of the top of the fixed frame, and a No. 4 diffuse reflection photoelectric switch 1203 is installed in the center of the top of the fixed frame. By setting the No. 4 diffuse reflection photoelectric switch 1203 to sense the side of the moving contact, it is convenient to perform position sensing when clamping the moving contact;

[0095] There are five No. 2 diffuse reflection photoelectric switches 1201 and No. 3 diffuse reflection photoelectric switches 1202 in total, among which there are three No. 2 diffuse reflection photoelectric switches 1201 and two No. 3 diffuse reflection photoelectric switches 1202. The three No. 2 diffuse reflection photoelectric switches 1201 and the two No. 3 diffuse reflection photoelectric switches 1202 are staggered, and the No. 2 diffuse reflection photoelectric switches 1201 and the No. 3 diffuse reflection photoelectric switches 1202 are used to stagger the sensing moving contacts. The three No. 2 diffuse reflection photoelectric switches 1201 and the two No. 3 diffuse reflection photoelectric switches 1202 installed obliquely are used to sense and detect the five moving contacts. When the moving contacts are sensed, the No. 2 diffuse reflection photoelectric switches 1201 and the No. 3 diffuse reflection photoelectric switches 1202 generate electrical signals, which is convenient for detecting the number of moving contacts. By setting the positioning detection mechanism 12, it is ensured that the multiple groups of moving contacts and the cylinder assembly have the function of positioning and preventing leakage and clamping.

[0096] Working principle: During the riveting production of circuit breaker components, the raw materials are conveyed from the No. 1 production station 1 to the No. 2 production station 2 through the front conveyor line 5, and the component raw materials are manually grasped and sequentially sent to the lever arm riveting mechanism 8, the spring cage clamping mechanism 9, the cylinder assembly clamping seat 10, the moving contact clamping mechanism 11 and the moving contact riveting mechanism 13 to complete the semi-automatic clamping and riveting. Then, the circuit breaker finished product is conveyed from the No. 2 production station 2 to the No. 3 production station 3 through the rear conveyor line 6 to realize the export of the finished product. The finished product can be temporarily stored at the storage station 4, and the component raw materials or finished products of the circuit breaker can be transported and transferred by the matching cart to ensure the riveting production of multi-contact circuit breaker components on the assembly line. See Fig.19 and Fig. 20 It can help understand the assembly and production of multi-contact circuit breaker components. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0097] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A riveting device for a multi-contact circuit breaker assembly, comprising a first production station (1), a second production station (2), a lever arm riveting mechanism (8) and a moving contact riveting mechanism (13), characterized in that: A lever arm riveting mechanism (8) is arranged above the front of the No. 1 production station (1), and two sets of moving contact riveting mechanisms (13) are arranged above the No. 2 production station (2); The lever arm riveting mechanism (8) comprises an electric riveting press (801) installed on the upper side of the No. 1 production station (1), a riveting head (801a) is installed on the bottom output shaft of the electric riveting press (801), an operating table (802) is installed on the lower side of the electric riveting press (801), and a U-shaped rail (803) is provided on the upper side of the operating table (802); The upper side of the operating table (802) is provided with a mounting plate (805) and a positioning fixture seat (804) in sequence, the mounting plate (805) and the positioning fixture seat (804) are mounted by screws, an auxiliary wheel (806) is connected through the middle of the mounting plate (805), the lower end of the auxiliary wheel (806) is movably connected to the U-shaped rail (803), and four groups of V-shaped limiting openings (805a) are symmetrically opened on both sides of the mounting plate (805); A positioning block (804a), wherein the positioning block (804a) is mounted on the top of a positioning fixture seat (804) by means of screws; the positioning fixture seat (804) is provided with two groups of external notches (804b) arranged in communication on one side edge close to the positioning block (804a); the positioning fixture seat (804) is provided with two groups of internal notches (804d) arranged in communication on the other side edge close to the positioning block (804a); the positioning fixture seat (804) is provided with two groups of internal notches (804d) arranged in communication on the other side edge close to the positioning block (804a); the upper side of the positioning fixture seat (804) is integrally formed with two symmetrically distributed prism seats; the upper edge of the external notches (804b) and the top of the prism seats are both welded with push rods (804c); the positioning fixture seat (804) is provided with a shelf channel (804e) below the internal notches (804d); and handles (804f) are installed on the front and rear surfaces of the positioning fixture seat (804).

2. A riveting device for a multi-contact circuit breaker assembly according to claim 1, characterized in that: An anti-deflection component (807) is provided on one side of the operating table (802) close to the U-shaped rail (803); a rectangular hole is provided on the end side of the operating table (802) close to the U-shaped rail (803); a guide seat (807a) is inserted and installed inside the rectangular hole; a mounting bracket (807b) is connected to the rear end of the guide seat (807a); and a metal induction switch (807c) is installed at the rear end of the mounting bracket (807b); A telescopic rod (807d) is inserted into a reserved cavity in the middle of the guide seat (807a), a buffer spring (807e) is sleeved on the outer side of the telescopic rod (807d), the tail end of the telescopic rod (807d) is inserted into the front end side of the mounting bracket (807b), and an annular cavity (807f) is provided on the outer peripheral side of the front end of the telescopic rod (807d).

3. A riveting device for a multi-contact circuit breaker assembly according to claim 1, characterized in that: Four groups of positioning pins (808) are installed at the bottom of the positioning fixture seat (804), and the bottom ends of the four groups of positioning pins (808) are inserted into the limiting openings (805a); A docking hole (808a) is provided through the middle of the lower end of the positioning pin (808), and grooves (808b) are symmetrically provided on the upper and lower sides of the inner wall of the docking hole (808a), and the groove (808b) is movably connected to the eccentric rotating shaft of the eccentric wheel (808c), and a return spring (808d) is fixed between the surface of the eccentric wheel (808c) close to the eccentric rotating shaft and the groove (808b).

4. A riveting device for a multi-contact circuit breaker assembly according to claim 1, characterized in that: The moving contact riveting mechanism (13) comprises a backing plate (1301) installed on the second production station (2), a U-shaped seat frame is installed in the middle of the upper side of the backing plate (1301), and riveting cylinders (1302) are symmetrically installed on both sides of the U-shaped seat frame, and a first cushion block (1303) and a second cushion block (1304) are respectively installed at both ends of the upper side of the backing plate (1301); A No. 2 push-pull clamp (1305) is installed on the upper side of the No. 1 pad (1303), a No. 3 push-pull clamp (1306) is installed on the upper side of the No. 2 pad (1304), an intermediate seat (1307) is rotatably connected above the pad (1301), and the intermediate seat (1307) is located between the No. 1 pad (1303) and the No. 2 pad (1304), a detachable buckle plate (1308) is inserted into the upper recess of the intermediate seat (1307), and a No. 5 diffuse reflection photoelectric switch (1309) is installed on the side of the pad (1301) close to the No. 1 pad (1303).

5. A riveting production line, using a multi-contact circuit breaker assembly riveting device according to any one of claims 1 to 4, comprising a third production station (3) and a storage station (4), characterized in that: A No. 2 production station (2) is arranged on one side of the No. 1 production station (1), a No. 3 production station (3) is arranged on the side of the No. 2 production station (2) away from the No. 1 production station (1), the No. 1 production station (1), and the No. 3 production station (3) are arranged in a U-shape, and a storage station (4) is arranged on the side of the No. 3 production station (3) away from the No. 2 production station (2); A front conveyor line (5) is installed between the No. 1 production station (1) and the No. 2 production station (2), and a rear conveyor line (6) is installed between the No. 2 production station (2) and the No. 3 production station (3); the front conveyor line (5) is located in the front operation area of ​​the No. 2 production station (2), and the rear conveyor line (6) is located in the rear storage area of ​​the No. 2 production station (2); roller silos (7) are installed inside the No. 1 production station (1), the No. 2 production station (2), the No. 3 production station (3) and the storage station (4); A spring cage clamping mechanism (9) is arranged above the middle of the No. 1 production station (1), a cylinder assembly clamping seat (10) is arranged on the side of the spring cage clamping mechanism (9) away from the lever arm riveting mechanism (8), and the cylinder assembly clamping seat (10) and the No. 1 production station (1) are mounted by screws, and a moving contact clamping mechanism (11) is arranged above the tail of the No. 1 production station (1).

6. A riveting production line according to claim 5, characterized in that: The spring cage clamping mechanism (9) comprises a manual punching machine (901) installed on a production station (1) No. 1, a punching head (902) is installed on the output shaft of the manual punching machine (901), a protective cover shell (903) is installed on the lower side of the manual punching machine (901) close to the punching head (902), and a slide rail (904) is symmetrically arranged on the manual punching machine (901), and the slide rail (904) is slidably connected to the slide table (905); A stopper (906) is fixed in the middle of the slide (905), a support (907) is fixed on one side of the slide (905) close to the stopper (906), a knob (908) is rotatably connected in the middle of the support (907), a locking block (909) is threadedly connected on the outer side of the output screw of the knob (908), and the locking block (909) and the stopper (906) are used to limit the spring cage and the rod arm.

7. A riveting production line according to claim 5, characterized in that: The cylinder assembly clamping seat (10) is of a right-angle structure, and guide rail seats (1002) and push rod seats (1008) that can slide and adjust positions are respectively provided at two ends of the cylinder assembly clamping seat (10), and a placement block (1006) installed with the cylinder assembly clamping seat (10) is provided on one side of the push rod seat (1008), and an inner recessed seat (1001) installed with the cylinder assembly clamping seat (10) is provided between the guide rail seat (1002) and the placement block (1006); One end of the guide rail seat (1002) is connected to a push-pull clamp (1003), the upper side of the guide rail seat (1002) is slidably connected to a guide block (1004), the guide block (1004) is connected to one end of the push-pull clamp (1003), and a spring positioning opening (1005) is provided at one end of the guide block (1004) away from the push-pull clamp (1003); The outer side of the push rod seat (1008) is sleeved with an arched shielding cover, the middle part of the push rod seat (1008) is installed with a push rod member (1009), and the upper side of the placement block (1006) is provided with a placement cavity (1007), and the placement cavity (1007) is flush with the height of the push rod member (1009).

8. The riveting production line according to claim 5, characterized in that: The moving contact clamping mechanism (11) comprises a base plate (1101) mounted on the second production station (2); a socket (1102), a clamping seat (1103), an extrusion cylinder (1104) and a tight support seat (1106) are respectively mounted on the top of the base plate (1101); a diffuse reflection photoelectric switch (1107) is mounted on the side wall of the socket (1102); the extrusion cylinder (1104) and the tight support seat (1106) are relatively mounted at two ends of the upper side of the base plate (1101); and the tight support seat (1106) is used to laterally abut the cylinder assembly; Two groups of horizontal rods are fixed on the surface of the extrusion cylinder (1104), and a sliding block (1105) is provided on the outer sliding sleeve of the horizontal rod, a straight plug board (1105a) is installed in the middle of the sliding block (1105), and a flat groove for docking with the straight plug board (1105a) is provided on the upper side of the socket (1102); A first horizontal seat (1108) and a second horizontal seat (1109) are respectively installed on both sides of the upper part of the card seat (1103), and a lever (1110) is arranged inside the first horizontal seat (1108) and the second horizontal seat (1109), and the axis lines of the two groups of levers (1110) coincide with each other, and a concave placement groove is installed at the front end of the second horizontal seat (1109).

9. The riveting production line according to claim 5, characterized in that: A positioning detection mechanism (12) is provided on one side of the No. 1 production station (1) close to the moving contact clamping mechanism (11), and the positioning detection mechanism (12) comprises a fixed frame installed on the No. 1 production station (1), and a No. 2 diffuse reflection photoelectric switch (1201) and a No. 3 diffuse reflection photoelectric switch (1202) are respectively installed obliquely on both sides of the top of the fixed frame, and a No. 4 diffuse reflection photoelectric switch (1203) is installed in the center of the top of the fixed frame; A total of five No. 2 diffuse reflection photoelectric switches (1201) and No. 3 diffuse reflection photoelectric switches (1202) are provided, wherein three No. 2 diffuse reflection photoelectric switches (1201) are provided, and two No. 3 diffuse reflection photoelectric switches (1202) are provided, the three No. 2 diffuse reflection photoelectric switches (1201) and the two No. 3 diffuse reflection photoelectric switches (1202) are staggered in distribution, and the No. 2 diffuse reflection photoelectric switches (1201) and the No. 3 diffuse reflection photoelectric switches (1202) are used to stagger the sensing moving contacts.

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