A continuous automatic grinding device and method for the bottom end surface of a die for bonding wire production

Abstract

The present invention discloses a continuous automatic grinding device and method for the bottom end surface of a mold for bonding wire production. The present invention relates to the technical field of grinding the bottom surface of a mold, and includes a feeding assembly arranged on a workbench for rotating the mold, a grinding assembly arranged on the workbench for grinding the burrs remaining on the bottom surface of the mold, and a protection and clamping assembly arranged on the workbench for protecting the center hole of the mold and clamping the mold; the protection and clamping assembly includes a bracket fixed on the bottom surface of the workbench and located directly below the hollow shaft, a connecting rod fixed on the bracket, a piston rod of the clamping cylinder passes through the mounting plate downward, and a lifting plate is fixed on the extended end, and a plurality of pressure plates are fixed on the bottom surface of the lifting plate along its length direction, and a protective rod is fixed on the bottom surface of each pressure plate. The beneficial effects of the present invention are: greatly improving the efficiency of grinding the bottom end surface of the mold and greatly improving the quality of mold production.

Description

Technical Field

[0001] The invention relates to the technical field of grinding the bottom surface of a mold, in particular to a continuous automatic grinding device and method for the bottom end surface of a mold for producing bonding wires. Background Art

[0002] Bonding wire is used to fix semiconductor parts on a specified circuit board. Bonding wire is produced by a special mold. The structure of a mold is as follows: Figure 1~Figure 2 As shown, the mold 1 includes a column 2 and a flange 3, the flange 3 is fixed on the top of the column 2, and a center hole 4 is opened in the mold 1, and the center hole 4 sequentially penetrates the flange 3 and the column 2 along the axial direction. This mold can be used in conjunction with a wire drawing machine to draw the blank wire into a bonding wire with a diameter equal to that of the center hole 4.

[0003] When a batch of Figure 1~Figure 2 After the mold 1 is shown, a large number of burrs are distributed on the bottom surface of the column 2 of each mold 1 [these burrs are mainly generated during the mold production process]. Therefore, the worker needs to grind away all the burrs remaining on the bottom end surface of the mold 1 to obtain a finished mold.

[0004] The method for grinding away the burrs remaining on the bottom end surface of each mold 1 in the workshop is:

[0005] S1. A worker takes out a mold 1 to be polished from a material basket, fixes the mold 1 with a fixture, and ensures that the bottom surface of the mold 1 faces upward;

[0006] S2, the worker operates the grinding disc 5 of the vertical grinder to move downward, and the grinding disc 5 in the rotating state moves toward the bottom end surface of the mold 1, and the grinding disc 5 grinds off the burrs remaining on the bottom end surface of the mold 1, such as Figure 3 As shown, a finished mold is obtained;

[0007] S3. The worker repeats steps S1 to S2 for several times to grind away the burrs on the bottom end surface of each mold 1, thereby obtaining a finished mold.

[0008] However, although the method used in the workshop can grind away the burrs on the bottom end surface of the mold 1, it still has the following technical defects:

[0009] I. The fixture can only fix one mold 1 at a time, so the vertical grinder can only grind the bottom end face of one mold 1 at a time. There are as many as 120 molds 1 to be polished in the workshop every day. The workers grind the molds 1 one by one, which takes a long time to grind all the molds 1 in the workshop, thereby reducing the grinding efficiency of the bottom end face of the mold 1.

[0010] II. When the grinding disc 5 is grinding the bottom surface of the mold 1, some of the burrs ground off will splash into the center hole 4 of the mold 1. The splashed burrs hit the inner wall of the center hole 4 and cause damage to the inner wall of the center hole 4. However, the process requires that the inner wall of the center hole 4 of the mold 1 after grinding should not be damaged, thereby reducing the production quality of the mold.

[0011] Therefore, there is an urgent need for a continuous automatic grinding device and method that can greatly improve the grinding efficiency of the bottom end surface of the mold and greatly improve the production quality of the mold. Summary of the invention

[0012] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a continuous automatic grinding device and method for the bottom end surface of a mold for bonding wire production, which greatly improves the grinding efficiency of the bottom end surface of the mold and greatly improves the production quality of the mold.

[0013] The object of the present invention is achieved by the following technical scheme: a continuous automatic grinding device for the bottom end surface of a die for producing bonding wires, which comprises a feeding assembly arranged on a workbench for rotating the die, a grinding assembly arranged on the workbench for grinding burrs remaining on the bottom surface of the die, and a protection and pressing assembly arranged on the workbench for protecting the center hole of the die and pressing the die;

[0014] The feeding assembly includes a hollow shaft rotatably installed in the workbench and passing through the workbench, a turntable welded to the outer wall of the upper end of the hollow shaft, through slots are provided at the left and right ends of the turntable, and rods fixed on the top surface of the turntable are provided on the left and right sides of the through slots. The lower end of the hollow shaft is connected to the driving assembly, and the driving assembly drives the hollow shaft to rotate around its own axis;

[0015] The protection and clamping assembly comprises a bracket fixedly mounted on the bottom surface of the workbench and located directly below the hollow shaft, a connecting rod fixedly mounted on the bracket, the connecting rod axially penetrates the inner cavity of the hollow shaft upward, and a mounting plate is fixedly mounted on the extended end, the mounting plate extends rightward to the position directly above the through slot located on the right side of the turntable, a clamping oil cylinder is fixedly mounted on the top surface of the extended end of the mounting plate, the piston rod of the clamping oil cylinder penetrates downwardly the mounting plate, and a lifting plate is fixedly mounted on the extended end, a plurality of pressure plates are fixedly mounted on the bottom surface of the lifting plate along the length direction thereof, a protection rod is fixedly mounted on the bottom surface of each pressure plate, and the diameter of the protection rod is equal to the diameter of the center hole of the mold;

[0016] The continuous automatic polishing device also includes a carrier, which has blind grooves on its bottom surface and at its left and right ends, and a plurality of step holes arranged along the length direction of the carrier are provided between the two blind grooves, wherein the large holes of the step holes match the outer contour of the flange of the mold, and the small holes of the step holes match the outer contour of the column of the mold.

[0017] The two through slots on the turntable are arranged symmetrically about the hollow shaft.

[0018] The driving assembly comprises a driven gear fixed on the outer cylindrical surface of the lower end of the hollow shaft, a driving motor fixed on the bottom surface of the workbench, a driving gear is installed on the output shaft of the driving motor, and the driving gear is meshed with the driven gear.

[0019] The grinding assembly is arranged directly below the through groove on the right side of the turntable. The grinding assembly includes two lifting cylinders fixedly arranged on the workbench surface. A frame is fixedly arranged between the action ends of the piston rods of the two lifting cylinders. An active roller and a driven roller are rotatably installed in the frame and at the left and right ends thereof respectively. An abrasive belt is installed between the active roller and the driven roller. A grinding motor is fixedly arranged on the rear end surface of the frame, and the output shaft of the grinding motor is connected to the rotating shaft of the active roller.

[0020] A plurality of supporting legs supported on the ground are fixedly arranged on the bottom surface of the workbench.

[0021] A bearing seat is fixedly arranged on the table surface of the workbench, and the hollow shaft is rotatably installed in the bearing seat.

[0022] The continuous automatic grinding device also includes a controller, which is electrically connected to the lifting cylinder, the pressing cylinder, the grinding motor and the driving motor via a signal line.

[0023] A method for continuously and automatically polishing the bottom end surface of a die for producing bonding wires comprises the following steps:

[0024] S1. A worker takes out a carrier and a plurality of molds to be polished, and then the worker respectively inserts the cylinders of the plurality of molds into the respective step holes of the carrier from top to bottom, and supports the flanges of the molds on the shoulders of the step holes, thereby realizing the installation of the plurality of molds to be polished;

[0025] S2. The worker inserts the two blind grooves of the carrier into the two rods on the left side of the loading assembly, thereby installing the carrier. At this time, all the molds in the carrier are suspended directly above the through grooves;

[0026] S3, control the driving motor of the driving assembly of the feeding assembly to start, the driving motor drives the driving gear to rotate, the driving gear drives the driven gear to rotate, the driven gear drives the hollow shaft to rotate, the hollow shaft drives the turntable to rotate, the turntable drives the rod to rotate, the rod drives the carrier mounted thereon to rotate synchronously, and then drives the various molds in the carrier to rotate synchronously; when the carrier rotates 180°, the controller controls the driving motor to turn off, at this time, the various molds in the carrier move to the top of the grinding assembly, and at the same time, the center holes of the various molds are respectively located directly below the various protection rods of the protection and clamping assembly;

[0027] S4. Protection and clamping of each mold in the carrier: the piston rod of the clamping cylinder of the protection and clamping assembly is extended downward, the piston rod drives the lifting plate to move downward, the lifting plate drives each pressure plate thereon to move downward synchronously, the pressure plate drives the protection rod to move downward, and the protection rod moves toward the center hole of the mold; when the piston rod of the clamping cylinder is fully extended, each protection rod is respectively embedded in the center hole of each mold, the bottom surface of the protection rod is flush with the bottom surface of the mold, and at the same time, each pressure plate presses the flange of each mold respectively to fix the mold in the carrier, thereby realizing the protection and clamping of each mold in the carrier;

[0028] S5, control the grinding motor of the grinding assembly to start, the grinding motor drives the active roller to rotate, and the active roller drives the sanding belt to reciprocate between the active roller and the driven roller; control the piston rods of the two lifting cylinders of the grinding assembly to extend upward, the piston rods drive the frame to move upward, the frame drives the active roller and the driven roller to move upward synchronously, and then drives the sanding belt to move toward the bottom surface of the mold; when the piston rod of the lifting cylinder is fully extended, the top surface of the sanding belt contacts the bottom surface of each mold, at this time, the sanding belt in a rotating state simultaneously grinds the bottom surface of each mold to grind off all burrs remaining on the bottom surface of the mold, thereby finally completing the grinding of burrs on the bottom surfaces of multiple molds;

[0029] S6. Take the polished mold out of the carrier: the worker controls the piston rod of the lifting cylinder to retract downward, and the piston rod drives the frame to move downward, thereby driving the sanding belt to move downward; then the worker controls the piston rod of the clamping cylinder to retract upward, thereby driving the lifting plate to move upward, thereby driving the protective rod to withdraw from the center hole of the mold; the worker takes the carrier away from the two rods, and after taking it away, the worker takes out the polished molds in the carrier;

[0030] S7. The worker repeats steps S1 to S6 for several times to grind away the burrs on the bottom end surfaces of all molds in the workshop.

[0031] The present invention has the following advantages: greatly improving the grinding efficiency of the bottom end surface of the mold and greatly improving the production quality of the mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 Schematic diagram of the structure of the mold;

[0033] Figure 2 for Figure 1 The main cross-sectional diagram of

[0034] Figure 3 A schematic diagram of a vertical grinder grinding the bottom surface of a mold;

[0035] Figure 4 It is a structural schematic diagram of the present invention;

[0036] Figure 5 for Figure 4 The main cross-sectional diagram of

[0037] Figure 6 It is a connection diagram of the hollow shaft, turntable and rod of the feeding assembly;

[0038] Figure 7 for Figure 6 The main cross-sectional diagram of

[0039] Figure 8 It is a schematic diagram of the structure of the protection and clamping components;

[0040] Fig. 9 for Figure 8 The main cross-sectional diagram of

[0041] Fig.10 It is a schematic diagram of the structure of the grinding component;

[0042] Fig.11 for Fig.10 A top view of

[0043] Fig.12 is a schematic diagram of the structure of the vehicle;

[0044] Fig.13 for Fig.12 The main cross-sectional diagram of

[0045] Fig.14 A schematic diagram for realizing the installation of multiple molds to be polished;

[0046] Fig.15 It is a schematic diagram of inserting two blind grooves of the carrier into two rods on the left side of the loading assembly respectively;

[0047] Fig.16 It is a schematic diagram showing that each mold in the carrier moves to the position directly above the grinding assembly;

[0048] Fig.17 Schematic diagram for protecting and pressing each mold in the carrier;

[0049] Fig.18 for Fig.17 A partial enlarged view of part A;

[0050] Fig.19 A schematic diagram of a rotating abrasive belt simultaneously grinding the bottom surfaces of various molds;

[0051] Fig. 20 for Fig.19 A partial enlarged view of part B;

[0052] Fig.21A schematic diagram for taking away the carrier;

[0053] In the figure:

[0054] 1-mold, 2-cylinder, 3-flange, 4-center hole, 5-grinding disc;

[0055] 6-working table, 7-feeding assembly, 8-grinding assembly, 9-protection and clamping assembly, 10-hollow shaft, 11-turntable, 12-through slot, 13-rod, 14-bracket, 15-connecting rod, 16-mounting plate, 17-clamping cylinder, 18-lifting plate, 19-pressure plate, 20-protection rod;

[0056] 21-carrier, 22-blind slot, 23-step hole;

[0057] 24-driven gear, 25-driving motor, 26-driving gear, 27-lifting cylinder, 28-frame, 29-driving roller, 30-driven roller, 31-abrasive belt, 32-grinding motor. DETAILED DESCRIPTION

[0058] The present invention is further described below in conjunction with the accompanying drawings, and the protection scope of the present invention is not limited to the following:

[0059] like Figure 4~Figure 13 As shown, a continuous automatic grinding device for the bottom end surface of a mold for bonding wire production includes a feeding component 7 arranged on a workbench 6 for rotating the mold 1, a grinding component 8 arranged on the workbench 6 for grinding burrs remaining on the bottom surface of the mold 1, and a protection and clamping component 9 arranged on the workbench for protecting the center hole 4 of the mold 1 and clamping the mold 1; a plurality of support legs supported on the ground are fixedly provided on the bottom surface of the workbench 6.

[0060] The feeding assembly 7 includes a hollow shaft 10 rotatably mounted in the workbench 6 and passing through the workbench 6, a turntable 11 welded to the outer wall of the upper end of the hollow shaft 10, a bearing seat is fixedly arranged on the table top of the workbench 6, the hollow shaft 10 is rotatably mounted in the bearing seat, and through grooves 12 are provided on the left and right ends of the turntable 11, and the two through grooves 12 on the turntable 11 are symmetrically arranged about the hollow shaft 10, and the left and right sides of the through grooves 12 are provided with rods 13 fixed on the top surface of the turntable 11, the lower end of the hollow shaft 10 is connected to the driving assembly, and the hollow shaft 10 is driven by the driving assembly to rotate around its own axis; the driving assembly includes a driven gear 24 fixedly arranged on the outer cylindrical surface of the lower end of the hollow shaft 10, and a driving motor 25 fixedly arranged on the bottom surface of the workbench 6, and a driving gear 26 is installed on the output shaft of the driving motor 25, and the driving gear 26 is meshed with the driven gear 24.

[0061] The protection and clamping assembly 9 includes a bracket 14 fixed on the bottom surface of the workbench 6 and located directly below the hollow shaft 10, and a connecting rod 15 fixed on the bracket 14. The connecting rod 15 axially penetrates the inner cavity of the hollow shaft 10 upward, and a mounting plate 16 is fixed on the extended end. The mounting plate 16 extends rightward to the top of the through slot 12 located on the right side of the turntable 11. A clamping cylinder 17 is fixed on the top surface of the extended end of the mounting plate 16. The piston rod of the clamping cylinder 17 penetrates the mounting plate 16 downward, and a lifting plate 18 is fixed on the extended end. A plurality of pressure plates 19 are fixed on the bottom surface of the lifting plate 18 along its length direction, and a protection rod 20 is fixed on the bottom surface of each pressure plate 19. The diameter of the protection rod 20 is equal to the diameter of the center hole 4 of the mold 1.

[0062] The continuous automatic grinding device also includes a carrier 21, and a blind groove 22 is provided on the bottom surface of the carrier 21 and at its left and right ends, and a plurality of step holes 23 are provided between the two blind grooves 22 and arranged along the length direction of the carrier 21, and the large hole of the step hole 23 matches the outer contour of the flange 3 of the mold, and the small hole of the step hole 23 matches the outer contour of the column 2 of the mold. The grinding assembly 8 is arranged just below the through groove 12 on the right side of the turntable 11, and the grinding assembly 8 includes two jacking cylinders 27 fixedly arranged on the table surface of the workbench 6, and a frame 28 is fixedly arranged between the action ends of the piston rods of the two jacking cylinders 27, and an active roller 29 and a driven roller 30 are rotatably installed in the frame 28 and at its left and right ends, respectively, and an abrasive belt 31 is installed between the active roller 29 and the driven roller 30, and a grinding motor 32 is fixedly arranged on the rear end surface of the frame 28, and the output shaft of the grinding motor 32 is connected to the rotating shaft of the active roller 29.

[0063] The continuous automatic grinding device also includes a controller, which is electrically connected to the lifting cylinder 27, the pressing cylinder 17, the grinding motor 32 and the driving motor 25 via signal lines.

[0064] A method for continuously and automatically polishing the bottom end surface of a die for producing bonding wires comprises the following steps:

[0065] S1, the worker takes out a Figure 12~Figure 13 The carrier 21 shown and a plurality of Figure 1~Figure 2 The mold 1 to be polished is shown in the figure, and then the worker respectively embeds the columns 2 of multiple molds 1 into the step holes 23 of the carrier 21 from top to bottom, and supports the flange 3 of the mold 1 on the shoulder of the step hole 23, thereby realizing the installation of multiple molds 1 to be polished, as shown in FIG. Fig.14 As shown;

[0066] S2, the worker inserts the two blind grooves 22 of the carrier 21 into the two rods 13 on the left side of the loading assembly 7, as shown in FIG. Fig.15As shown, the installation of the carrier 21 is realized, and at this time, each mold 1 in the carrier 21 is suspended directly above the through slot 12;

[0067] S3, control the driving motor 25 of the driving assembly of the feeding assembly 7 to start, the driving motor 25 drives the driving gear 26 to rotate, the driving gear 26 drives the driven gear 24 to rotate, the driven gear 24 drives the hollow shaft 10 to rotate, the hollow shaft 10 drives the turntable 11 to rotate, the turntable 11 drives the rod 13 to rotate, the rod 13 drives the carrier 21 mounted thereon to rotate synchronously, and then drives the various molds 1 in the carrier 21 to rotate synchronously; when the carrier 21 rotates 180°, the controller controls the driving motor 25 to turn off, at this time, the various molds 1 in the carrier 21 move to the top of the grinding assembly 8, as shown in FIG. Fig.16 As shown, at the same time, the center hole 4 of each mold 1 is respectively located directly below each protection rod 20 of the protection and clamping assembly 9;

[0068] S4. Protection and clamping of each mold 1 in the carrier 21: Control the piston rod of the clamping cylinder 17 of the protection and clamping assembly 9 to extend downward, the piston rod drives the lifting plate 18 to move downward, the lifting plate 18 drives each pressure plate 19 thereon to move downward synchronously, the pressure plate 19 drives the protection rod 20 to move downward, and the protection rod 20 moves toward the center hole 4 of the mold 1; when the piston rod of the clamping cylinder 17 is fully extended, each protection rod 20 is respectively embedded in the center hole 4 of each mold 1, and the bottom surface of the protection rod 20 is flush with the bottom surface of the mold 1. At the same time, each pressure plate 19 presses the flange 3 of each mold 1 respectively to fix the mold 1 in the carrier 21, thereby realizing the protection and clamping of each mold 1 in the carrier 21, as shown in FIG. Figure 17-18 As shown;

[0069] S5, control the grinding motor 32 of the grinding assembly 8 to start, the grinding motor 32 drives the active roller 29 to rotate, and the active roller 29 drives the sanding belt 31 to reciprocate between the active roller 29 and the driven roller 30; control the piston rods of the two lifting cylinders 27 of the grinding assembly 8 to extend upward, the piston rods drive the frame 28 to move upward, the frame 28 drives the active roller 29 and the driven roller 30 to move upward synchronously, and then drives the sanding belt 31 to move toward the bottom surface of the mold 1; when the piston rod of the lifting cylinder 27 is fully extended, the top surface of the sanding belt 31 is in contact with the bottom surface of each mold 1, at this time, the sanding belt 31 in the rotating state grinds the bottom surface of each mold 1 at the same time, such as Figure 19~Figure 20 As shown, all burrs remaining on the bottom surface of the mold 1 are polished off, thereby finally completing the polishing of the burrs on the bottom surfaces of multiple molds 1;

[0070] Among them, in step S4, the piston rod of the clamping cylinder 17 of the protection and clamping assembly 9 is extended downward, so that each protection rod 20 is respectively embedded in the center hole 4 of each mold 1, and at the same time, each pressure plate 19 presses the flange 3 of each mold 1 respectively; in step S5, the piston rod of the lifting cylinder 27 of the grinding assembly 8 is extended upward, so that the rotating sanding belt 31 grinds the bottom surface of each mold 1, thereby finally grinding away the burrs on the bottom surfaces of multiple molds 1. It can be seen that compared with the above, the present grinding device is Figure 3 In the grinding method shown, since the protective rod 20 is embedded in the center hole 4 of the mold 1 to protect the inner wall of the center hole 4, it is effectively avoided that the burrs polished off by the sanding belt 31 when grinding the bottom surface of the mold 1 will not hit the inner wall of the center hole 4 of the mold 1, thereby playing a good role in protecting the mold 1 and greatly improving the production quality of the mold 1.

[0071] In addition, through the linkage cooperation of the carrier 21, the protection and clamping component 9, and the grinding component 8, the sanding belt 31 can simultaneously grind the bottom surfaces of each mold 1 in the carrier 21 at one time. Therefore, compared with the grinding method in the workshop, there is no need for workers to grind the molds 1 one by one, thereby achieving the grinding of all the molds 1 in the workshop in a short time, thereby greatly improving the grinding efficiency of the bottom end surface of the mold 1.

[0072] S6. Remove the polished mold 1 from the carrier 21: The worker controls the piston rod of the lifting cylinder 27 to retract downward, and the piston rod drives the frame 28 to move downward, thereby driving the sanding belt 31 to move downward; then the worker controls the piston rod of the clamping cylinder 17 to retract upward, thereby driving the lifting plate 18 to move upward, thereby driving the protective rod 20 to withdraw from the center hole 4 of the mold 1; the worker removes the carrier 21 from the two rods 13, and after removing, the worker removes the polished molds 1 in the carrier 21, and the removal direction is as follows: Fig.21 As indicated by the arrow;

[0073] S7. The worker repeats steps S1 to S6 for several times to grind away the burrs on the bottom end surfaces of all molds 1 in the workshop.

[0074] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A method for continuously and automatically polishing the bottom end surface of a die for producing bonding wires, the method using a device for continuously and automatically polishing the bottom end surface of a die for producing bonding wires, the device comprising a feeding assembly (7) arranged on a workbench (6) for rotating the die (1), a polishing assembly (8) arranged on the workbench (6) for polishing burrs remaining on the bottom surface of the die (1), and a protecting and pressing assembly (9) arranged on the workbench for protecting a center hole (4) of the die (1) and pressing the die (1); The feeding assembly (7) comprises a hollow shaft (10) rotatably mounted in a workbench (6) and penetrating the workbench (6), a turntable (11) welded to the outer wall of the upper end of the hollow shaft (10), through grooves (12) are provided at the left and right ends of the turntable (11), and rods (13) fixed on the top surface of the turntable (11) are provided on the left and right sides of the through groove (12), and the lower end of the hollow shaft (10) is connected to the driving assembly, and the driving assembly drives the hollow shaft (10) to rotate around its own axis; The protection and clamping assembly (9) comprises a bracket (14) fixedly mounted on the bottom surface of the workbench (6) and located directly below the hollow shaft (10), and a connecting rod (15) fixedly mounted on the bracket (14); the connecting rod (15) axially penetrates the inner cavity of the hollow shaft (10) upward, and a mounting plate (16) is fixedly mounted on the extended end; the mounting plate (16) extends rightward to directly above the through slot (12) located on the right side of the turntable (11); a clamping cylinder (17) is fixedly mounted on the top surface of the extended end of the mounting plate (16); the piston rod of the clamping cylinder (17) penetrates downwardly through the mounting plate (16), and a lifting plate (18) is fixedly mounted on the extended end; a plurality of pressure plates (19) are fixedly mounted on the bottom surface of the lifting plate (18) along its length direction; a protection rod (20) is fixedly mounted on the bottom surface of each pressure plate (19); the diameter of the protection rod (20) is equal to the diameter of the center hole (4) of the mold (1); The continuous automatic polishing device also includes a carrier (21), a blind groove (22) is provided on the bottom surface of the carrier (21) and at the left and right ends thereof, a plurality of step holes (23) are provided between the two blind grooves (22) and are arranged along the length direction of the carrier (21), the large holes of the step holes (23) match the outer contour of the flange (3) of the mold, and the small holes of the step holes (23) match the outer contour of the column (2) of the mold, and are characterized in that: The method comprises the following steps: S1. A worker takes out a carrier (21) and a plurality of molds (1) to be polished, and then the worker respectively inserts the columns (2) of the plurality of molds (1) into the respective step holes (23) of the carrier (21) from top to bottom, and supports the flanges (3) of the molds (1) on the shoulders of the step holes (23), thereby achieving the installation of the plurality of molds (1) to be polished; S2. The worker inserts the two blind grooves (22) of the carrier (21) into the two rods (13) on the left side of the loading assembly (7), thereby installing the carrier (21). At this time, each mold (1) in the carrier (21) is suspended directly above the through groove (12); S3, controlling the driving motor (25) of the driving assembly of the feeding assembly (7) to start, the driving motor (25) drives the driving gear (26) to rotate, the driving gear (26) drives the driven gear (24) to rotate, the driven gear (24) drives the hollow shaft (10) to rotate, the hollow shaft (10) drives the turntable (11) to rotate, the turntable (11) drives the rod (13) to rotate, the rod (13) drives the carrier (21) mounted thereon to rotate synchronously, and then drives the various molds (1) in the carrier (21) to rotate synchronously; when the carrier (21) rotates 180°, the controller controls the driving motor (25) to turn off, at which time, the various molds (1) in the carrier (21) all move to the top of the grinding assembly (8), and at the same time, the center hole (4) of each mold (1) is respectively located directly below each protection rod (20) of the protection and clamping assembly (9); S4. Protection and clamping of each mold (1) in the carrier (21): the piston rod of the clamping cylinder (17) of the protection and clamping assembly (9) is controlled to extend downward, the piston rod drives the lifting plate (18) to move downward, the lifting plate (18) drives each pressure plate (19) thereon to move downward synchronously, the pressure plate (19) drives the protection rod (20) to move downward, and the protection rod (20) moves toward the center hole (4) of the mold (1); when the piston rod of the clamping cylinder (17) is fully extended, each protection rod (20) is respectively embedded in the center hole (4) of each mold (1), and the bottom surface of the protection rod (20) is flush with the bottom surface of the mold (1). At the same time, each pressure plate (19) presses the flange (3) of each mold (1) to fix the mold (1) in the carrier (21), thereby realizing the protection and clamping of each mold (1) in the carrier (21); S5, control the grinding motor (32) of the grinding assembly (8) to start, the grinding motor (32) drives the active roller (29) to rotate, the active roller (29) drives the sanding belt (31) to reciprocate between the active roller (29) and the driven roller (30); control the piston rods of the two lifting cylinders (27) of the grinding assembly (8) to extend upward, the piston rods drive the frame (28) to move upward, the frame (28) drives the active roller (29) and the driven roller (30) to rotate synchronously The sanding belt (31) moves upward, thereby driving the sanding belt (31) to move toward the bottom surface of the mold (1); when the piston rod of the lifting cylinder (27) is fully extended, the top surface of the sanding belt (31) contacts the bottom surface of each mold (1), and at this time, the sanding belt (31) in a rotating state simultaneously grinds the bottom surface of each mold (1) to grind away all burrs remaining on the bottom surface of the mold (1), thereby finally completing the grinding of burrs on the bottom surfaces of multiple molds (1); S6. Remove the polished mold (1) from the carrier (21): the worker controls the piston rod of the lifting cylinder (27) to retract downward, and the piston rod drives the frame (28) to move downward, thereby driving the sanding belt (31) to move downward; then the worker controls the piston rod of the clamping cylinder (17) to retract upward, thereby driving the lifting plate (18) to move upward, thereby driving the protective rod (20) to withdraw from the center hole (4) of the mold (1); the worker removes the carrier (21) from the two rods (13), and after removing it, the worker removes the multiple polished molds (1) in the carrier (21); S7. The worker repeats steps S1 to S6 for several times to grind away the burrs on the bottom end surfaces of all the molds (1) in the workshop.

2. The method for continuous automatic polishing of the bottom end surface of a bonding wire production mold according to claim 1, characterized in that: The two through slots (12) on the turntable (11) are arranged symmetrically with respect to the hollow shaft (10).

3. The method for continuous automatic polishing of the bottom end surface of a bonding wire production mold according to claim 2, characterized in that: The driving assembly comprises a driven gear (24) fixedly mounted on the outer cylindrical surface of the lower end of the hollow shaft (10), a driving motor (25) fixedly mounted on the bottom surface of the workbench (6), a driving gear (26) mounted on the output shaft of the driving motor (25), and the driving gear (26) meshes with the driven gear (24).

4. The method for continuous automatic polishing of the bottom end surface of a bonding wire production mold according to claim 3, characterized in that: The grinding assembly (8) is arranged just below the right through slot (12) of the turntable (11). The grinding assembly (8) comprises two lifting cylinders (27) fixedly arranged on the surface of the workbench (6). A frame (28) is fixedly arranged between the action ends of the piston rods of the two lifting cylinders (27). An active roller (29) and a driven roller (30) are rotatably mounted in the frame (28) and at the left and right ends thereof respectively. An abrasive belt (31) is installed between the active roller (29) and the driven roller (30). A grinding motor (32) is fixedly arranged on the rear end surface of the frame (28). The output shaft of the grinding motor (32) is connected to the rotating shaft of the active roller (29).

5. The method for continuous automatic polishing of the bottom end surface of a bonding wire production mold according to claim 4, characterized in that: A plurality of support legs supported on the ground are fixedly arranged on the bottom surface of the workbench (6).

6. The method for continuous automatic polishing of the bottom end surface of a bonding wire production mold according to claim 5, characterized in that: A bearing seat is fixedly provided on the table surface of the workbench (6), and the hollow shaft (10) is rotatably mounted in the bearing seat.

7. The method for continuous automatic polishing of the bottom end surface of a bonding wire production mold according to claim 6, characterized in that: The continuous automatic grinding device also includes a controller, which is electrically connected to the lifting cylinder (27), the pressing cylinder (17), the grinding motor (32) and the driving motor (25) via signal lines.

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