Automatic welding system for grounding plate inside magnetic head housing

Abstract

The present invention relates to an automatic welding system for a grounding plate in a magnetic head housing, comprising a housing feeding device, a grounding plate feeding device, a spot welding machine body, and a welding workbench. A housing loading device and a grounding plate loading device are provided on opposite sides of the welding workbench. The housing loading device comprises a positioning block 1 connected to the end of the housing feeding device, and the grounding plate loading device comprises a positioning block 2 connected to the end of the grounding plate feeding device. The spot welding machine body comprises an upper electrode and a lower electrode. The lower electrode reciprocates between positioning block 1 and positioning block 2, and corresponds to the end of the first feeding channel of positioning block 1 and the end of the second feeding channel of positioning block 2. The upper electrode is located above the end of the first feeding channel. The present invention can automatically complete the loading, welding, and unloading operations of the magnetic head housing and the grounding plate through an automated welding production line, thereby realizing batch welding production, fast welding speed, and high yield rate, thereby solving the problem of low efficiency of manual welding.

Description

Technical Field

[0001] The invention relates to the technical field of magnetic heads for card readers, and in particular to an automatic welding system for a grounding piece in a magnetic head shell. Background Art

[0002] A magnetic head is a component that reads data from magnetic media using magnetic principles. It is one of the most important components in magnetic reading devices, such as the card readers used at bank teller windows and self-service terminals. High-quality magnetic heads ensure low failure rates and high accuracy in these devices, which is why high quality requirements are typically placed on magnetic head products. A magnetic head typically consists of a housing, a soft magnetic core enclosed within the housing, a coil, and a magnetic gap. The housing is also equipped with a grounding plate, which connects the core to the FPC ground pad or cable ground wire.

[0003] Currently, during the production of magnetic head housings, welders typically manually weld the grounding plate to the semi-finished magnetic head housing using fusion welding. Because the grounding plate's position inside the housing is difficult to observe, companies often use position-limiting fixtures to align the grounding plate with the housing to aid in the welding process. For example, patent application number CN8221482594.8 proposes a welding jig for magnetic head housing production. While this welding jig improves the welding efficiency of the magnetic head housing to a certain extent, it is still relatively slow compared to the production speed of other magnetic head components. Because the magnetic head housing and components such as the magnetic core are produced on separate production lines and then assembled into a complete magnetic head product, the welding speed of the grounding plate and the housing has become the biggest obstacle to improving magnetic head production efficiency. Therefore, the efficiency of the grounding plate welding process in the magnetic head housing production process needs to be further improved. Summary of the Invention

[0004] In order to solve the above problems, the present invention provides an automatic welding system for the grounding plate in the magnetic head housing, which can automatically complete the loading, welding and unloading operations of the magnetic head housing and the grounding plate, solving the problem of low efficiency of manual welding.

[0005] The technical solution adopted by the present invention is: an automatic welding system for a grounding plate inside a magnetic head housing, used for welding the grounding plate and the magnetic head housing, including a housing feeding device, a grounding plate feeding device, a spot welding machine body and a welding workbench, the welding workbench is provided with a housing loading device and a grounding plate loading device, the housing loading device is fixedly connected to the conveying end of the housing feeding device, the grounding plate loading device is fixedly connected to the conveying end of the grounding plate feeding device, and the housing loading device and the grounding plate loading device are respectively located on opposite sides of the welding workbench.

[0006] The shell loading device includes a first positioning block fixedly mounted on the welding workbench, and a first loading channel is provided on the first positioning block. The grounding plate loading device includes a second positioning block fixedly mounted on the welding workbench, and a second loading channel is provided on the second positioning block. The first loading channel corresponds to the second loading channel.

[0007] The spot welding machine body includes an upper electrode and a lower electrode. The upper electrode is located above the conveying end of the feeding channel one, and the upper electrode moves up and down along a first direction, which is a vertical direction. The lower electrode is located between the positioning block one and the positioning block two, and the lower electrode moves back and forth along a second direction, which is a horizontal connection direction between the conveying end of the feeding channel one and the conveying end of the feeding channel two. A limiting protrusion is provided on the side of the lower electrode close to the positioning block one, and the limiting protrusion is used to be inserted into the magnetic head housing located at the end of the feeding channel one. A through grounding plate chute is provided on the top surface of the lower electrode along the second direction. The grounding plate chute is connected to the end of the feeding channel two at one end close to the positioning block two, and the bottom surface of the other end of the grounding plate chute extends to the top of the limiting protrusion.

[0008] The welding workbench is also provided with a lever mechanism for moving the magnetic head housing after welding out of the first feeding channel.

[0009] As a further limitation of the above technical solution, the shell feeding device includes a shell vibration plate for arranging and outputting the head shell, and a shell feeding track for transporting the head shell to the position of the shell loading device, and the discharge port of the shell vibration plate is connected to the shell feeding track.

[0010] The grounding sheet feeding device includes a grounding sheet vibrating plate for arranging and outputting the grounding sheets, and a grounding sheet feeding track for transporting the grounding sheets to the location of the grounding sheet loading device. The discharge port of the grounding sheet vibrating plate is connected to the grounding sheet feeding track.

[0011] As a further limitation of the above technical solution, an arrangement rail connected to its discharge port is provided in the outer shell vibration plate, and a rejection mechanism 1 and a rejection mechanism 2 fixedly connected to the outer shell vibration plate are provided on one side of the arrangement rail.

[0012] The first rejection mechanism includes a protrusion arranged on the arrangement rail, the conveying surface of the arrangement rail where the protrusion is located forms a set angle with the vertical plane, and the protrusion is used to push the magnetic head housing arranged in the opposite direction on the arrangement rail out of the arrangement rail.

[0013] The second rejection mechanism includes a light sensor and an air blowing hole opened on the arrangement rail. The air blowing hole is connected to an air blower through an air pipe. The light sensor is arranged above the position of the air blowing hole on the arrangement rail. The light sensor is used to detect the top of the magnetic head shell passing through the arrangement rail below it. The air blowing hole is used to blow the magnetic head shell without a marker on the top out of the arrangement rail.

[0014] As a further limitation of the above technical solution, the shell loading device also includes a shell pushing mechanism, the positioning block 1 is fixedly connected to the conveying end of the shell feeding track, the loading channel 1 includes an arrangement groove 1 connected to the shell feeding track, and a pushing slide 1 opened along the second direction, the arrangement groove 1 and the pushing slide 1 are vertically connected, the end of the pushing slide 1 close to the positioning block 2 is located below the upper electrode, and the shell pushing mechanism is located at the other end of the pushing slide 1.

[0015] The grounding sheet feeding device also includes a grounding sheet pushing mechanism, the second positioning block is fixedly connected to the conveying end of the grounding sheet feeding track, the second feeding channel includes an arrangement groove second connected to the grounding sheet feeding track, and a pushing slideway second opened along the second direction, the arrangement groove second and the pushing slideway second are vertically connected, the end of the pushing slideway second close to the positioning block one is connected to the grounding sheet slideway, and the grounding sheet pushing mechanism is located at the other end of the pushing slideway second.

[0016] As a further limitation of the above technical solution, a groove is provided on the side wall of the end of the pushing slide 1 close to the positioning block 2, and a clamping mechanism is provided in the groove, and the clamping mechanism includes a clamping block and a spring, the clamping block is arranged to fit the bottom surface of the pushing slide 1, and is rotatably connected to the groove through a vertical pin shaft, the pin shaft is connected to the end of the clamping block close to the arrangement groove 1, and a gap is provided between the clamping block and the side wall of the groove, the spring is provided between the clamping block and the side wall of the groove, the two ends of the spring respectively press against the adjacent side walls of the clamping block and the side walls of the groove, and the spring is located at the end of the clamping block away from the arrangement groove 1.

[0017] As a further limitation of the above technical solution, there are two grounding plate vibration plates and two grounding plate feeding rails respectively, and they are symmetrically distributed on both sides of the welding workbench. There are also two positioning blocks 2 in the grounding plate loading device, and they are respectively connected to the conveying ends of the two grounding plate feeding rails. The arrangement rails in the grounding plate vibration plate and the grounding plate feeding rails are both double rails, and each of the positioning blocks 2 is respectively provided with two arrangement grooves 2 and two push slides 2, and the two ends of each arrangement groove 2 are respectively connected to a push slide 2 and a single rail in the grounding plate feeding rail.

[0018] There are four pushing slides on the positioning block in the shell loading device, and four upper electrodes and four lower electrodes are respectively provided. Each upper electrode is installed above a pushing slide, and each pushing slide, pushing slide and lower electrode are respectively provided in a one-to-one correspondence.

[0019] As a further limitation of the above technical solution, a first telescopic cylinder fixedly connected to the welding workbench is provided above the upper electrode, the telescopic end of the first telescopic cylinder extends downward along a first direction, and the upper electrode is fixedly installed at the bottom of the telescopic end of the first telescopic cylinder.

[0020] The bottom of the lower electrode is fixedly connected to a horizontal moving platform, and the bottom of the horizontal moving platform is slidably connected to a lifting platform via a slide rail arranged along a second direction. A second telescopic cylinder is fixedly installed on one side of the lifting platform, and the telescopic end of the second telescopic cylinder extends along the length direction of the slide rail. The horizontal moving platform is fixedly connected to the telescopic end of the second telescopic cylinder, and a sliding rod is provided at the bottom of the lifting platform along the first direction, and is slidably connected to a fixed platform via the sliding rod. The fixed platform is fixedly connected to the welding workbench, and a third telescopic cylinder is fixedly installed on the fixed platform, and the telescopic end of the third telescopic cylinder extends upward along the first direction, and the lifting platform is fixedly connected to the telescopic end of the third telescopic cylinder.

[0021] As a further limitation of the above technical solution, the shifting lever mechanism includes a shifting block, a connecting rod, and a motor. The motor is fixedly mounted on one side of the welding workbench via a bracket, the output end of the motor is fixedly connected to the connecting rod, and a plurality of shifting blocks are fixedly mounted on the connecting rod along its length, each shifting block being respectively disposed above each of the first push slides.

[0022] As a further limitation of the above technical solution, an exhaust hole is provided at the top of the limiting protrusion, an exhaust pipe is connected to the bottom of the exhaust hole, and an exhaust fan is connected through the exhaust pipe.

[0023] By adopting the above technology, the advantage of the present invention is that the loading, welding and unloading operations of the magnetic head housing and the grounding plate can be automatically completed through the automated welding production line consisting of the housing feeding device, the housing loading device, the grounding plate feeding device, the grounding plate loading device and the spot welding machine body.

[0024] The magnetic head housing and grounding plate are neatly arranged and transported to the vicinity of a welding workbench by a housing feeding device and a grounding plate feeding device, respectively. The housing loading device and the grounding plate loading device respectively push the magnetic head housing and grounding plate near the welding workbench to the workstation to be welded. A movable lower electrode then moves the grounding plate to a suitable position within the magnetic head housing, while simultaneously cooperating with the upper electrode to weld the grounding plate to the magnetic head housing. This invention enables accurate mass welding of magnetic head housings and grounding plates, with high welding speed and yield, solving the problem of low manual welding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 for Figure 1 A magnified view of the local structure at point A;

[0027] Figure 3 Schematic diagram of the positional relationship between the arrangement rail and the vertical plane in the present invention;

[0028] Figure 4 It is a structural schematic diagram of the shell feeding device in the present invention;

[0029] Figure 5 Figure 4 A magnified view of the local structure at point B in the middle;

[0030] Figure 6 It is a structural schematic diagram of the ground sheet feeding device of the present invention;

[0031] Figure 7 This is a schematic diagram of the structural positions of the spot welding machine body, the shell loading device, and the grounding plate loading device in the present invention;

[0032] Figure 8 Schematic diagram of the structure and position of the upper electrode and the shell feeding device in the present invention;

[0033] Figure 9 for Figure 8 A magnified view of the local structure at point C in the middle;

[0034] Figure 10 A schematic structural diagram of the ground sheet feeding device of the present invention;

[0035] Figure 11 for Figure 10A magnified view of the local structure at point D in the middle;

[0036] Figure 12 Schematic diagram of the installation structure of the lower electrode in the present invention;

[0037] Figure 13 Schematic diagram of the alignment between the shell loading device, the grounding plate loading device and the lower electrode in the present invention;

[0038] Figure 14 for Figure 13 A magnified view of the local structure at point E in the middle;

[0039] Figure 15 Schematic diagram of the alignment between the first and second positioning blocks and the lower electrode in the present invention;

[0040] Figure 16 A schematic structural diagram of the lower electrode in the present invention;

[0041] Figure 17 This is a structural diagram of the magnetic head housing and the grounding plate after welding.

[0042] In the figure: 1 - shell feeding device; 11 - shell vibration plate; 111 - arrangement rail; 112 - protrusion; 113 - light sensor; 114 - blowing hole; 12 - shell feeding track; 2 - grounding plate feeding device; 21 - grounding plate vibration plate; 22 - grounding plate feeding track; 3 - spot welding machine body; 31 - upper electrode; 311 - first telescopic cylinder; 32 - lower electrode; 321 - grounding plate chute; 322 - limit protrusion; 3221 - exhaust hole; 33 - horizontal moving table; 34 - lifting table; 35 - second telescopic cylinder; 36 - fixed table, 37 - third telescopic cylinder; 4 - welding workbench; 5 - shell feeding device; 51-positioning block one; 511-arrangement slot one; 512-pushing slide one; 52-housing pushing mechanism; 521-fourth telescopic cylinder; 522-first pushing head; 53-clamping mechanism; 531-clamping block; 54-position sensor one; 6-grounding piece loading device; 61-positioning block two; 611-arrangement slot two; 612-pushing slide two; 62-grounding piece pushing mechanism; 621-fifth telescopic cylinder; 622-second pushing head; 63-position sensor two; 7-shift lever mechanism; 71-shift block; 72-connecting rod; 73-motor; 8-collection tray; 9-head housing; 901-marker; 10-grounding piece. DETAILED DESCRIPTION

[0043] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0044] An automatic welding system for a grounding plate in a magnetic head housing is used to weld the grounding plate 10 and the magnetic head housing 9. Figure 17 Welded together as well.

[0045] like Figure 1-16 As shown, an automatic welding system for a grounding plate in a magnetic head housing includes a shell feeding device 1, a grounding plate feeding device 2, a spot welding machine body 3 and a welding workbench 4. A shell loading device 5 and a grounding plate loading device 6 are provided on the welding workbench 4. The shell loading device 5 is fixedly connected to the conveying end of the shell feeding device 1, and the grounding plate loading device 6 is fixedly connected to the conveying end of the grounding plate feeding device 2. The shell loading device 5 and the grounding plate loading device 6 are respectively located on opposite sides of the welding workbench 4.

[0046] like Figure 4 As shown, the shell feeding device 1 includes a shell vibrating plate 11 and a shell feeding track 12. The shell vibrating plate 11 is used to neatly arrange the magnetic head shells 9 to be welded in a certain order and output them in the arranged order. The discharge port of the shell vibrating plate 11 is connected to the shell feeding track 12. The magnetic head shells 9 output from the discharge port of the shell vibrating plate 11 are transported to the location of the shell loading device 5 via the shell feeding track 12.

[0047] like Figure 7-9 As shown, the housing loading device 5 includes a positioning block 51 fixedly mounted on the welding workbench 4 and a housing pushing mechanism 52. Positioning block 51 is fixedly connected to the conveying end of the housing feed track 12. A loading channel 1 is provided on positioning block 51. The housing pushing mechanism 52 pushes the magnetic head housing 9, which has been moved to the end of the housing feed track 12, along loading channel 1 to the end of loading channel 1, i.e., the position where the magnetic head housing 9 is to be welded.

[0048] like Figure 6 As shown, the grounding sheet feeding device 2 includes a grounding sheet vibrating plate 21 and a grounding sheet feeding track 22. The grounding sheet vibrating plate 21 is used to neatly arrange the grounding sheets 10 to be welded in a certain order and output them in the arranged order. The discharge port of the grounding sheet vibrating plate 21 is connected to the grounding sheet feeding track 22. The grounding sheets 10 output from the discharge port of the grounding sheet vibrating plate 21 are transported to the location of the grounding sheet loading device 6 via the grounding sheet feeding track 22.

[0049] like Figure 10-11 As shown, the grounding sheet feeding device 6 includes a second positioning block 61 fixedly mounted on the welding workbench 4 and a grounding sheet pushing mechanism 62. The second positioning block 61 is fixedly connected to the conveying end of the grounding sheet feeding track 22. The second positioning block 61 is provided with a second feeding channel. The grounding sheet pushing mechanism 62 pushes the grounding sheet 10 that has moved to the end of the grounding sheet feeding track 22 along the second feeding channel to the end of the second feeding channel. The end of the second feeding channel corresponds to the end of the first feeding channel.

[0050] like Figure 7As shown, the spot welding machine body 3 includes an upper electrode 31 and a lower electrode 32. The upper electrode 31 is located above the conveying end of the loading channel 1. A first telescopic cylinder 311 fixedly connected to the welding workbench 4 is provided above the upper electrode 31. The telescopic end of the first telescopic cylinder 311 extends downward along a first direction x, where the first direction x is a vertical direction. The upper electrode 31 is fixedly mounted at the bottom of the telescopic end of the first telescopic cylinder 311. The first telescopic cylinder 311 can move the upper electrode 311 up and down along the first direction x.

[0051] The lower electrode 32 is located between the first positioning block 51 and the second positioning block 61. Figure 9 As shown, a horizontal platform 33 is fixedly connected to the bottom of the lower electrode 32. A lifting platform 34 is slidably connected to the bottom of the horizontal platform 33 via a slide rail arranged along a second direction y. The second direction y is the horizontal line connecting the conveying ends of loading channel 1 and loading channel 2. A second telescopic cylinder 35 is fixedly mounted on one side of the lifting platform 34. The telescopic end of the second telescopic cylinder 35 extends along the length of the slide rail, and the horizontal platform 33 is fixedly connected to the telescopic end of the second telescopic cylinder 35. The second telescopic cylinder 35 enables reciprocating movement of the horizontal platform 33 and the lower electrode 32 along the second direction y.

[0052] like Figure 12-16 As shown (where Figure 13 and Figure 15 In order to clearly illustrate the positional relationship between the lower electrode 32 and the positioning block 1 51 and the positioning block 2 61, the mounting structure below the lower electrode 32 is hidden, so it does not mean that the lower electrode 32 is suspended separately. ), a limiting protrusion 322 is provided on the side of the lower electrode 32 close to the positioning block 1 51, and a grounding plate chute 321 is provided on the top surface of the lower electrode 32 along the second direction y. When the lower electrode 32 moves to the side adjacent to the positioning block 2 61, the grounding plate chute 321 is connected to the end of the feeding channel 2, and the bottom surface of the other end of the grounding plate chute 321 extends to the top of the limiting protrusion 322. At this time, the grounding plate pushing mechanism 62 continues to push the grounding plate 10 located on the feeding channel 2, pushing the grounding plate 10 to the top of the limiting protrusion 322. When the lower electrode 32 moves to the side adjacent to the positioning block 51, the limiting protrusion 322 can be inserted into the magnetic head housing 9 at the end of the loading channel 1. The grounding plate 10 located on top of the limiting protrusion 322 is brought into the magnetic head housing 9 and approaches the inner top wall of the magnetic head housing 9. At this time, the upper electrode 31 moves downward and cooperates with the lower electrode 32 to weld the magnetic head housing 9 and the grounding plate 10 together.

[0053] like Figure 7-9As shown, a lever mechanism 7 is also provided on the welding workbench 4. The lever mechanism 7 includes a lever block 71, a connecting rod 72, and a motor 73. The motor 73 is fixedly mounted on one side of the welding workbench 4 via a bracket. The output end of the motor 73 is fixedly connected to the connecting rod 72. The lever block 71 is fixedly connected to the connecting rod 72. The lever block 71 is correspondingly arranged above the end of the first feeding channel and on one side of the upper electrode 31. The lever mechanism 7 is used to remove the welded magnetic head housing from the end of the first feeding channel. During the rotation process, the lever block 71 can pass through the first feeding channel. When the welding of the magnetic head housing 9 and the grounding plate 10 is completed, the motor 73 can be started to drive the connecting rod 72 to rotate, which drives the lever block 71 to rotate around the axis of the connecting rod 72, thereby removing the welded magnetic head housing 9 located at the end of the first feeding channel. A collecting tray 8 is provided below the welding workbench 4 where the positioning block 51 is located. The magnetic head shell 9 slid down from the end of the feeding channel 1 just falls into the collecting tray 8, making it convenient for the staff to collect it for subsequent production.

[0054] like Figure 12 As shown, in this embodiment, a sliding rod is provided at the bottom of the lifting platform 34 along the first direction x, and is slidably connected to a fixed platform 36 via the sliding rod. The fixed platform 36 is fixedly connected to the welding workbench 4 via a number of fixed brackets. A third telescopic cylinder 37 is fixedly mounted on the fixed platform 36. The telescopic end of the third telescopic cylinder 37 extends upward along the first direction x, and the lifting platform 34 is fixedly connected to the telescopic end of the third telescopic cylinder 37. The third telescopic cylinder 37 enables the lifting platform 34, the horizontal movable platform 33 above it, and the lower electrode 32 to move upward and downward along the first direction x. In this embodiment, the lifting platform 34 has a very small lifting distance. When the upper electrode 31 moves downward and, together with the lower electrode 32, welds the magnetic head housing 9 and the grounding plate 10, the third telescopic cylinder 37 drives the lower electrode 32 to move slightly upward, thereby cooperating with the upper electrode 31 to force the grounding plate 10 into close contact with the inner top wall of the magnetic head housing 9, thereby more firmly welding the magnetic head housing 9 and the grounding plate 10.

[0055] like Figure 1-5 As shown, in this embodiment, an arrangement rail 111 connected to the discharge port of the housing vibration plate 11 is provided inside the housing vibration plate 11. A first and a second rejection mechanism are provided on one side of the arrangement rail 111 and fixedly connected to the housing vibration plate 11. The rejection mechanism 1 includes a protrusion 112 provided on the arrangement rail 111, which is used to push the magnetic head housing 9 arranged in the opposite direction on the arrangement rail 111 out of the arrangement rail 111. The position of the protrusion 112 is as shown in FIG. Figure 2In this embodiment, the conveying surface of the alignment rail 111 at the location of the protrusion 112 forms an angle of 15°-20° with the vertical plane. That is, the conveying surface of the alignment rail 111 forms a predetermined angle with the vertical plane in the second direction y. This angle setting ensures that the magnetic head housing 9, which is aligned in the correct direction, can fall back into the alignment rail 111 after passing the protrusion 112.

[0056] like Figure 17 As shown, one side of the magnetic head housing 9 is open, and the grounding plate 10 to be welded extends from the open side into the magnetic head housing 9 and is welded to the inner side of the top wall of the magnetic head housing 9. The other side of the magnetic head housing 9 opposite the open side is a curved surface. When the magnetic head housings 9 are arranged on the arrangement rail 111 under the vibration of the housing vibration plate 11 and move along the arrangement rail 111, the position of the magnetic head housing 9 is considered correct if the open side is close to the conveying surface of the arrangement rail 111, while the position of the curved surface is close to the conveying surface of the arrangement rail 111, which is considered to be reversed. However, the position and orientation of these magnetic head housings 9 are usually not completely consistent when they are initially arranged. When a magnetic head housing 9 is arranged on the arrangement rail 111 with the curved surface close to the conveying surface of the arrangement rail 111, it will be ejected from the track when passing the position where the protrusion 112 is located, preventing it from entering the subsequent welding production process. When the magnetic head housing 9 with its open side close to the conveying surface of the arrangement rail 111 passes the position where the protrusion 112 is located, although it will be partially ejected from the rail, since the arrangement rail 111 at this position is in an inclined state, the center of gravity of this part of the magnetic head housing 9 that is ejected outward is still within the arrangement rail 111. Therefore, when the magnetic head housing 9 passes the position where the protrusion 112 is located, it will fall back to the inner position of the arrangement rail 111 under the action of its own gravity and continue to be conveyed normally along the arrangement rail 111.

[0057] The second rejection mechanism includes a light sensor 113 and an air blow hole 114 provided on the arrangement rail 111. The air blow hole 114 is connected to an air blower via an air pipe. The light sensor 113 is provided above the position of the air blow hole 114 on the arrangement rail 111. The light sensor 113 is used to detect whether there is a marker 901 on the top of the magnetic head housing 9 on the arrangement rail 111 below it. The air blow hole 114 is used to push the magnetic head housing 9 without the marker 901 on the top out of the arrangement rail 111. The positions of the light sensor 113 and the air blow hole 114 are as shown in FIG. Figure 3 and 4 shown.

[0058] like Figure 17As shown, marker 901 is a circular pit-like structure on the top outer wall of the magnetic head housing 9. The final alignment of the magnetic head housing 9 is considered correct only when the outer wall with marker 901 faces upward. When the magnetic head housing 9 moves along the alignment track 111 to below the light sensor 113, marker 901 reflects infrared light emitted by the light sensor 113 toward the light sensor 113. At this point, the light sensor 113 detects that the alignment of the magnetic head housing 9 is correct, and the magnetic head housing 9 can pass smoothly through the alignment track 111 below the light sensor 113. If the magnetic head housing 9 passes under the light sensor 113 and the light sensor 113 does not receive the infrared light reflected by marker 901, the alignment of the magnetic head housing 9 is incorrect. The light sensor 113 sends a signal to the controller, which controls the air blower. Air blown through air holes 114 blows the incorrectly aligned magnetic head housing 9 out of the alignment track 111, preventing it from entering the subsequent welding production process. By using the rejection mechanism 2, the markers 901 of all the magnetic head shells 9 that are finally arranged and transported are facing upward, which makes it easier for the position sensor 1 54 to identify the position of the magnetic head shell 9 in the arrangement slot 1 511, and facilitates the automatic loading process of the magnetic head shell 9 by controlling the shell pushing mechanism 52.

[0059] like Figure 13 and 15 As shown, in this embodiment, the loading channel 1 includes an arrangement groove 1 511 connected to the housing feed track 12, and a push slide 1 512 extending along the second direction y. The arrangement groove 1 511 and the push slide 1 512 are vertically connected. The end of the push slide 1 512 adjacent to the positioning block 2 61 is located below the upper electrode 31, and the housing pushing mechanism 52 is located at the other end of the push slide 1 512. The housing pushing mechanism 52 includes a fourth telescopic cylinder 521, the telescopic end of which extends along the length of the push slide 1 512. The telescopic end of the fourth telescopic cylinder 521 is fixedly connected to a first push head 522, which is slidably connected to the push slide 1 512, and the end of the first push head 522 away from the fourth telescopic cylinder 521 abuts against the curved wall surface of the magnetic head housing 9. A position sensor 54 is provided above the connection position between the arrangement groove 511 and the pushing slide 512. When the magnetic head housing 9 moves along the arrangement groove 511 to a specific position below the position sensor 54, the fourth telescopic cylinder 521 is activated and pushes the magnetic head housing 9 to a position below the upper electrode 31 through the first pushing head 522.

[0060] In this embodiment, the second feeding channel includes a second arrangement slot 611 connected to the grounding plate feed track 22, and a second push slide 612 extending along the second direction y. The second arrangement slot 611 and the second push slide 612 are vertically connected. The end of the second push slide 612 near the first positioning block 51 is connected to the grounding plate slot 321, and the grounding plate pushing mechanism 62 is located at the other end of the second push slide 612. The grounding plate pushing mechanism 62 includes a fifth telescopic cylinder 621, the telescopic end of which extends along the length of the second push slide 612. The telescopic end of the fifth telescopic cylinder 621 is fixedly connected to a second push head 622, which is slidably connected to the second push slide 612, and the end of the second push head 622 away from the fifth telescopic cylinder 621 abuts the grounding plate 10. A second position sensor 63 is provided above the connection position between the second arrangement groove 611 and the second pushing slide 612. When the grounding plate 10 moves to a specific position below the second position sensor 63, the fifth telescopic cylinder 621 is activated, and the grounding plate 10 is pushed along the second pushing slide 612 and the grounding plate slide groove 321 to the top of the limiting protrusion 322 through the second pushing head 622.

[0061] like Figure 16 As shown, in this embodiment, an air extraction hole 3221 is defined at the top of the positioning protrusion 322. An air extraction pipe is connected to the bottom of the air extraction hole 3221, which is then connected to an air pump. When the grounding plate 10 is pushed to the top of the positioning protrusion 322, the air pump is activated. The negative pressure generated by the air extraction hole 3221 attracts the grounding plate 10 to the top of the positioning protrusion 322. This ensures that the relative position between the grounding plate 10 and the magnetic head housing 9 remains unchanged during the process of moving the grounding plate 10 into the corresponding magnetic head housing 9 and during the welding process between the grounding plate 10 and the magnetic head housing 9. This ensures more accurate welding position between the grounding plate 10 and the magnetic head housing 9, thereby improving welding quality and yield rate.

[0062] like Figure 9 and 14As shown, in this embodiment, a slot is provided on the side wall of the end of the pushing slide 512 near the positioning block 2 61, and a clamping mechanism 53 is provided in the slot. The clamping mechanism 53 includes a clamping block 531 and a spring. The clamping block 531 is arranged to fit the bottom surface of the pushing slide 512 and is rotatably connected to the slot through a vertical pin shaft. The pin shaft is connected to one end of the clamping block 531 near the arrangement slot 1 511. A gap is provided between the clamping block 531 and the side wall of the slot. The spring is provided between the clamping block 531 and the side wall of the slot. The two ends of the spring respectively press against the adjacent side walls of the clamping block 531 and the side walls of the slot, and the spring is located at the end of the clamping block 531 away from the arrangement slot 1 511. When the magnetic head housing 9 is pushed into the first arrangement slot 511 and positioned below the upper electrode 31, the magnetic head housing 9 presses against the sidewalls of the clamping block 531 and applies pressure to the spring through the clamping block 531, compressing the spring. Simultaneously, the tension of the spring is applied to the sidewalls of the clamping block 531, clamping and securing the magnetic head housing 9 within the first arrangement slot 511 through the clamping block 531. The clamping mechanism 53 is provided to clamp and secure the magnetic head housing 9 when it is pushed to the welding station, ensuring accurate alignment of the magnetic head housing 9 with the corresponding grounding plate 10, allowing for accurate welding and improved welding quality and yield.

[0063] In this embodiment, two grounding plate vibration discs 21 and two grounding plate feed tracks 22 are provided, symmetrically distributed on either side of the welding workbench 4. The conveying directions of the grounding plate feed tracks 22 on both sides are perpendicular to the second direction y. Two second positioning blocks 61 are also provided in the grounding plate loading device 6, and are respectively connected to the conveying ends of the two grounding plate feed tracks 22. The arrangement track 111 in the grounding plate vibration disc 21 and the grounding plate feed track 22 are both double tracks. Each second positioning block 61 is respectively provided with two second arrangement slots 611 and two second push slides 612. The two ends of each second arrangement slot 611 are respectively connected to a second push slide 612 and a single track of the grounding plate feed track 22. Four second position sensors 63 are provided, each correspondingly disposed above the connection point between each second arrangement slot 611 and the second push slide 612.

[0064] There is only one housing vibrating plate 11 and only one housing feed track 12. The feed direction of the housing feed track 12 is perpendicular to the second direction y. The housing loading device 5 has only one positioning block 51, which is provided with one arrangement slot 511 and four push chutes 512. The four push chutes 512 are vertically connected to the arrangement slot 511. There are four position sensors 54, one located above the connection point between each push chute 512 and the arrangement slot 511.

[0065] There are four upper electrodes 31 and four lower electrodes 32 , respectively. Each upper electrode 31 is installed above a push slide 512 . Each push slide 512 , push slide 612 and lower electrode 32 are arranged in a one-to-one correspondence.

[0066] There are also four shifting blocks 71 in the shifting rod mechanism 7 . The four shifting blocks 71 are evenly distributed along the length direction of the connecting rod 72 and are respectively arranged above each pushing slide 512 .

[0067] In this embodiment, the light sensor 113 is electrically connected to an automated control system, and the position sensor 1 54, the position sensor 2 63, the first telescopic cylinder 311, the second telescopic cylinder 35, the third telescopic cylinder 37, the fourth telescopic cylinder 521, the fifth telescopic cylinder 621, the motor 73, etc. are also electrically connected to the automated control system. The automated control system is used to control the conveying process, loading process, welding process, and unloading process of the magnetic head housing 9 and the grounding plate 10.

[0068] The working steps of the automatic welding system for the ground plate in the head housing are as follows: after a plurality of head housings 9 to be welded are neatly arranged in a certain order by the housing vibrating plate 11, they are transported to the arrangement slot 1 511 through the housing feeding track 12. After being arranged to a specific position in the arrangement slot 1 511, the housing pushing mechanism 52 pushes the head housing 9 at the connection position between the arrangement slot 1 511 and the pushing slide 1 512 along the pushing slide 1 512 to the position to be welded, that is, the position below the upper electrode 31.

[0069] After multiple grounding plates 10 to be welded are arranged in order through the grounding plate vibrating plate 21, they are transported to the arrangement groove 2 611 through the grounding plate feeding track 22. At the connection position between the arrangement groove 2 611 and the pushing slide 2 612, the grounding plate pushing mechanism 62 pushes the grounding plate 10 along the pushing slide 2 612 to one end close to the lower electrode 32. At this time, the lower electrode 32 is located on the adjacent side of the positioning block 2 61, and the grounding plate pushing mechanism 62 continues to push the grounding plate 10 along the grounding plate slide 321 to the top of the limiting protrusion 322.

[0070] Then, the second telescopic cylinder 35 drives the lower electrode 32 to a position adjacent to the positioning block 1 51, inserting the limiting protrusion 322 and its top grounding plate 10 into the magnetic head housing 9. After the magnetic head housing 9 and the grounding plate 10 to be welded have reached the welding station, the first telescopic cylinder 311 drives the upper electrode 31 downward, and the third telescopic cylinder 37 drives the lower electrode 32 upward a small distance, welding the grounding plate 10 to the inner top wall of the magnetic head housing 9.

[0071] After welding is completed, the upper electrode 31 returns to its original position upward, and the lower electrode 32 returns to its original position downward, and at the same time returns along the second direction y to the position adjacent to the second positioning block 61. At this time, the lever mechanism 7 starts to operate, and the welded head housing is pushed out of the push slide 512.

[0072] The present invention utilizes an automated welding production line consisting of a housing feeding device, a housing loading device, a grounding plate feeding device, a grounding plate loading device, and a spot welding machine body to automatically complete the loading, welding, and unloading operations of magnetic head housings and grounding plates. This enables accurate mass welding of magnetic head housings and grounding plates, with high welding speed and yield, thus addressing the issue of low manual welding efficiency. The foregoing description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technical solution obtained by a person skilled in the art, within the technical scope disclosed herein, by equivalently replacing or modifying the technical concepts of the present invention, is also encompassed within the scope of protection of the present invention.

Claims

1. An automatic welding system for a grounding plate inside a magnetic head housing, used for welding the grounding plate to the magnetic head housing, characterized by: The invention comprises a shell feeding device (1), a grounding sheet feeding device (2), a spot welding machine body (3) and a welding workbench (4); the welding workbench (4) is provided with a shell loading device (5) and a grounding sheet loading device (6); the shell loading device (5) is fixedly connected to the conveying end of the shell feeding device (1); the grounding sheet loading device (6) is fixedly connected to the conveying end of the grounding sheet feeding device (2); the shell loading device (5) and the grounding sheet loading device (6) are respectively located on opposite sides of the welding workbench (4); The shell feeding device (5) includes a positioning block (51) fixedly mounted on the welding workbench (4), and a feeding channel (1) is provided on the positioning block (51); the grounding plate feeding device (6) includes a positioning block (61) fixedly mounted on the welding workbench (4), and a feeding channel (2) is provided on the positioning block (61); the feeding channel (1) corresponds to the feeding channel (2); The spot welding machine body (3) comprises an upper electrode (31) and a lower electrode (32); The upper electrode (31) is located above the conveying end of the first feeding channel, and the upper electrode (31) moves up and down along a first direction, which is a vertical direction; The lower electrode (32) is located between the first positioning block (51) and the second positioning block (61), and the lower electrode (32) reciprocates along a second direction, the second direction being the horizontal connection direction between the conveying end of the first feeding channel and the conveying end of the second feeding channel; A limiting protrusion (322) is provided on one side of the lower electrode (32) close to the positioning block 1 (51), and the limiting protrusion (322) is used to be inserted into the magnetic head housing (9) located at the end of the feeding channel 1. A through grounding plate slide groove (321) is provided on the top surface of the lower electrode (32) along the second direction. One end of the grounding plate slide groove (321) close to the positioning block 2 (61) is connected to the end of the feeding channel 2, and the bottom surface of the other end of the grounding plate slide groove (321) extends to the top of the limiting protrusion (322); The welding workbench (4) is also provided with a lever mechanism (7) for moving the magnetic head housing out of the first loading channel after welding.

2. The automatic welding system for the grounding plate in the magnetic head housing according to claim 1, characterized in that: The shell feeding device (1) comprises a shell vibrating plate (11) for arranging and outputting the magnetic head shells (9), and a shell feeding track (12) for transporting the magnetic head shells (9) to the location of the shell loading device (5), and the discharge port of the shell vibrating plate (11) is connected to the shell feeding track (12); The grounding sheet feeding device (2) comprises a grounding sheet vibrating plate (21) for arranging and outputting the grounding sheets (10), and a grounding sheet feeding track (22) for conveying the grounding sheets (10) to the location of the grounding sheet loading device (6), and the discharge port of the grounding sheet vibrating plate (21) is connected to the grounding sheet feeding track (22).

3. The automatic welding system for the grounding plate in the magnetic head housing according to claim 2, characterized in that: An arrangement rail (111) connected to the discharge port is provided in the shell vibration plate (11), and a first rejection mechanism and a second rejection mechanism fixedly connected to the shell vibration plate (11) are provided on one side of the arrangement rail (111); The first rejection mechanism comprises a protruding piece (112) provided on the arrangement rail (111), the conveying surface of the arrangement rail (111) where the protruding piece (112) is located forms a set angle with a vertical plane, and the protruding piece (112) is used to push the magnetic head housing (9) arranged in the opposite direction on the arrangement rail (111) out of the arrangement rail (111); The second rejection mechanism comprises a light sensor (113) and an air blowing hole (114) provided on the arrangement rail (111); the air blowing hole (114) is connected to an air blower via an air pipe; the light sensor (113) is arranged above the position of the air blowing hole (114) on the arrangement rail (111); the light sensor (113) is used to detect the top of the magnetic head housing (9) on the arrangement rail (111) below it; and the air blowing hole (114) is used to blow the magnetic head housing (9) without a marker (901) on the top out of the arrangement rail (111).

4. The automatic welding system for the grounding plate in the magnetic head housing according to claim 2, characterized in that: The shell feeding device (5) further includes a shell pushing mechanism (52), the positioning block 1 (51) is fixedly connected to the conveying end of the shell feeding track (12), the feeding channel 1 includes an arrangement groove 1 (511) connected to the shell feeding track (12), and a pushing slide 1 (512) opened along the second direction, the arrangement groove 1 (511) and the pushing slide 1 (512) are vertically connected, and the pushing slide 1 (512) is located below the upper electrode (31) at one end close to the positioning block 2 (61), and the shell pushing mechanism (52) is located at the other end of the pushing slide 1 (512); The grounding sheet feeding device (6) further includes a grounding sheet pushing mechanism (62), the second positioning block (61) is fixedly connected to the conveying end of the grounding sheet feeding track (22), the second feeding channel includes a second arrangement groove (611) connected to the grounding sheet feeding track (22), and a second pushing slideway (612) opened along the second direction, the second arrangement groove (611) and the second pushing slideway (612) are vertically connected, the second pushing slideway (612) is connected to the grounding sheet slide groove (321) at one end close to the first positioning block (51), and the grounding sheet pushing mechanism (62) is located at the other end of the second pushing slideway (612).

5. The automatic welding system for the grounding plate in the magnetic head housing according to claim 4, characterized in that: A slot is provided on the side wall of the end of the pushing slideway (512) close to the positioning block (61), and a clamping mechanism (53) is provided in the slot. The clamping mechanism (53) includes a clamping block (531) and a spring. The clamping block (531) is arranged in contact with the bottom surface of the pushing slideway (512) and is rotatably connected to the slot through a vertical pin shaft. The pin shaft is connected to one end of the clamping block (531) close to the arrangement slot (511). A gap is provided between the clamping block (531) and the side wall of the slot. The spring is arranged between the clamping block (531) and the side wall of the slot. The two ends of the spring respectively press against the adjacent side walls of the clamping block (531) and the side wall of the slot, and the spring is located at one end of the clamping block (531) away from the arrangement slot (511).

6. The automatic welding system for the grounding plate in the magnetic head housing according to claim 4, characterized in that: The grounding plate vibration disk (21) and the grounding plate feeding track (22) are respectively provided with two, and are symmetrically distributed on both sides of the welding workbench (4), and the positioning block 2 (61) in the grounding plate loading device (6) is also provided with two, and are respectively connected to the conveying ends of the two grounding plate feeding tracks (22), and the arrangement track (111) in the grounding plate vibration disk (21) and the grounding plate feeding track (22) are both double tracks, and each positioning block 2 (61) is respectively provided with two arrangement slots 2 (611) and two push slides 2 (612), and the two ends of each arrangement slot 2 (611) are respectively connected to a push slide 2 (612) and a single track in the grounding plate feeding track (22); A total of four push slides (512) are provided on the positioning block (51) in the shell loading device (5), and four upper electrodes (31) and four lower electrodes (32) are also provided. Each upper electrode (31) is respectively installed above a push slide (512), and each push slide (512), push slide (612) and lower electrode (32) are respectively provided in a one-to-one correspondence.

7. The automatic welding system for the grounding plate in the magnetic head housing according to claim 1, characterized in that: A first telescopic cylinder (311) fixedly connected to the welding workbench (4) is provided above the upper electrode (31), the telescopic end of the first telescopic cylinder (311) extending downward in a first direction, and the upper electrode (31) is fixedly mounted on the bottom of the telescopic end of the first telescopic cylinder (311); The bottom of the lower electrode (32) is fixedly connected to a horizontal moving platform (33), and the bottom of the horizontal moving platform (33) is slidably connected to a lifting platform (34) via a slide rail arranged along the second direction. A second telescopic cylinder (35) is fixedly installed on one side of the lifting platform (34), and the telescopic end of the second telescopic cylinder (35) extends along the length direction of the slide rail. The horizontal moving platform (33) is fixedly connected to the telescopic end of the second telescopic cylinder (35). A sliding rod is arranged at the bottom of the lifting platform (34) along the first direction, and is slidably connected to a fixed platform (36) via the sliding rod. The fixed platform (36) is fixedly connected to the welding workbench (4). A third telescopic cylinder (37) is fixedly installed on the fixed platform (36), and the telescopic end of the third telescopic cylinder (37) extends upward along the first direction. The lifting platform (34) is fixedly connected to the telescopic end of the third telescopic cylinder (37).

8. The automatic welding system for the grounding plate in the magnetic head housing according to claim 6, characterized in that: The shifting rod mechanism (7) comprises a shifting block (71), a connecting rod (72) and a motor (73); the motor (73) is fixedly mounted on one side of the welding workbench (4) through a bracket, the output end of the motor (73) is fixedly connected to the connecting rod (72), and a plurality of shifting blocks (71) are fixedly mounted on the connecting rod (72) along its length direction, and each shifting block (71) is respectively arranged above each of the pushing slideways (512).

9. The automatic welding system for the grounding plate in the magnetic head housing according to claim 1, characterized in that: An air extraction hole (3221) is provided on the top of the limiting protrusion (322), and an air extraction pipe is connected to the bottom of the air extraction hole (3221), and an air pump is connected through the air extraction pipe.

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