Assembly Process of the Blanking Station Structure of the Giant Slalom Die

Abstract

The assembly process of the blanking station structure of the large slewing die disclosed by the present invention is as follows: the blanking concave die with an over-surplus amount on the outer diameter is tightly fitted and installed in the installation hole with an over-surplus amount on the rotary shaft sleeve. Then, a guiding hole is machined on the end face of the rotary shaft sleeve. After that, the rotary shaft sleeve is installed on the lower die base. At this time, the stripper plate seat is positioned through the guide pillar on the lower die base, and a guiding hole is machined on the stripper plate seat with the center of the inner hole of the blanking concave die as the center coordinate. Finally, the guiding pin, blanking punch, blanking boss, fixing plate, and upper die base are successively installed. It solves the technical problem that during this tight-fitting process, the blanking massage will squeeze and expand the installation hole of the rotary shaft sleeve, thereby causing the formed insert hole to deform, and further makes the size of the insert hole stable.

Description

Technical Field

[0001] The present invention relates to the technical field of die manufacturing and assembly processes for the production of motor cores, especially the assembly process of the blanking station structure of a large rotary die. Background Art

[0002] Generally, a motor core is formed by stacking punched and blanked iron core sheets during manufacturing. However, before the blanking concave die at the iron core sheet forming and blanking station is assembled into the rotary shaft sleeve, the insert hole on the upper end face of the rotary shaft sleeve has already been formed. At this time, the blanking concave die is tightly fitted into the installation hole of the rotary shaft sleeve in an interference fit manner. Due to cost and other factors, the material hardness of the rotary shaft sleeve is less than that of the blanking concave die. Therefore, during this tight fitting process, the blanking concave die will squeeze and expand the installation hole of the rotary shaft sleeve, which will cause the already formed insert hole to deform, resulting in the inability to assemble the insert into the insert hole. At this time, it may be necessary to reprocess and enlarge the insert hole, as well as reconfigure larger-sized inserts and pilot pins. However, this method will increase the assembly efficiency and manufacturing cost accordingly, and will also occupy a relatively large space for strip forming during the production process, resulting in limitations on the forming size of the iron core sheet. Summary of the Invention

[0003] The purpose of the present invention is to design an assembly process for the blanking station structure of a large rotary die to solve the above-mentioned technical deficiencies.

[0004] The assembly process for the blanking station structure of the large rotary die designed by the present invention includes the following steps:

[0005] S1. Install the blanking concave die with an outer diameter having an interference surplus tightly in the installation hole of the rotary shaft sleeve with an interference surplus, and make the upper end face of the blanking concave die flush with the upper end face of the rotary shaft sleeve to form a blanking assembly;

[0006] S2. Drill holes on the upper end face of the rotary shaft sleeve with the center position of the inner hole of the blanking concave die as the center coordinate to form a plurality of first pilot holes arranged in an annular array on the upper end face of the rotary shaft sleeve;

[0007] S3. Rotationally install the blanking assembly in the blanking channel of the lower die base, and stack the blanking plate seat on the upper end face of the blanking assembly;

[0008] S4. Insert one end of the guide pillar into the positioning hole of the lower die base, and the middle part of the guide pillar passes through the first guiding hole of the blanking plate seat to position the blanking plate seat on the lower die base;

[0009] S5. Drill holes in the stripper plate seat with the center of the inner hole of the blanking die as the center coordinate, so as to penetrate and form a plurality of second pilot holes arranged in a circular array on the stripper plate seat. The number of the second pilot holes is the same as that of the first pilot holes, so that the plurality of second pilot holes are respectively arranged corresponding to the positions of the first pilot holes;

[0010] S6. Fit bushings in both the first pilot holes and the second pilot holes;

[0011] S7. Configure a plurality of pilot pins respectively adapted to each bushing. After the plurality of pilot pins pass through the fixed plate, the fixed plate gradually approaches the stripper plate seat until it is stacked on the stripper plate seat and fixedly arranged. At this time, one end of the pilot pin passes through the bushing of the second pilot hole and corresponds to the position of the bushing of the first pilot hole, and the blanking punch on the fixed plate is positioned at the positioning through hole of the stripper plate seat, so that after the blanking punch is positioned, it corresponds to the position of the inner hole of the blanking die;

[0012] S8. The upper die base gradually approaches the fixed plate so that the other end of the guide pillar is inserted into the second guide hole of the upper die base, and one end of each pilot pin is respectively installed on the upper die base through an elastic member.

[0013] According to the assembly process of the blanking station structure of the large rotary die described above, in step S7, during the process that the small stripper plate gradually approaches the side surface of the stripper plate seat facing the blanking die, each pilot pin passes through the small stripper plate and abuts and fixes with the stripper plate seat, and the blanking punch is positioned in the through hole of the small stripper plate.

[0014] According to the assembly process of the blanking station structure of the large rotary die described above, a positioning groove is formed on the side surface of the stripper plate seat facing the blanking die, and the small stripper plate is fixed in the positioning groove.

[0015] According to the assembly process of the blanking station structure of the large rotary die described above, a limiting step surface is formed in the middle of the pilot pin.

[0016] According to the assembly process of the blanking station structure of the large rotary die described above, a plurality of assembly holes corresponding to the positions of the pilot pins are arranged on the upper die base. Elastic members are installed in each assembly hole. One end port of the assembly hole is closed by a plug, and the other end of the pilot pin is inserted into the interior from the other end of the assembly hole and abuts against one end of the elastic member, and the other end of the elastic member abuts against the plug.

[0017] According to the assembly process of the downhill die blanking station structure described above, in step S7, the extraction plate is slidably installed in the transverse channel on the fixed plate, the first movable part of the blanking boss is placed in the through hole on the fixed plate communicating with the transverse channel, and the second movable part of the blanking boss is placed in the positioning perforation of the blanking plate seat. The blanking punch is fixed on the second movable part of the blanking boss. A limiting step is provided between the first movable part and the second movable part of the blanking boss. Multiple mutually spaced inclined teeth are provided on the side surface of the first movable part of the blanking boss facing the extraction plate and on the side surface of the extraction plate facing the blanking boss. The inclined teeth on the blanking boss and the inclined teeth on the extraction plate are arranged in corresponding cooperation with each other.

[0018] According to the assembly process of the downhill die blanking station structure described above, the outer shapes of the installation holes of the rotary shaft sleeve, the blanking die and the rotary shaft sleeve are all circular structures.

[0019] According to the assembly process of the downhill die blanking station structure described above, at least one pilot pin is located at one end of the extraction plate. A first inclined guiding surface is provided on the pilot pin located at one end of the extraction plate, and a second inclined guiding surface is provided at one end of the extraction plate. The first inclined guiding surface and the second inclined guiding surface cooperate with each other.

[0020] The beneficial effects of the assembly process of the downhill die blanking station structure designed by the present invention are as follows: The blanking die is assembled on the premise that the forming insert hole is not formed on the rotary shaft sleeve. After the blanking die is assembled, the insert hole is machined on the top surface of the rotary shaft sleeve with the inner hole of the blanking die as the center coordinate. Thus, the technical problem that the blanking die will extrude and expand the installation hole of the rotary shaft sleeve during this tight-fitting process, and further cause the formed insert hole to deform is solved, and the size of the insert hole is further stabilized. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the blanking station structure.

[0022] Figure 2 It is an enlarged view of part A.

[0023] Figure 3 It is a schematic diagram of the blanking component structure.

[0024] Figure 4 It is a top view of the blanking component structure.

[0025] In the figure: 1. Lower die base; 2. Blanking component; 3. Stripper plate seat; 4. Fixed plate; 5. Upper die base; 6. Insert sleeve; 7. Guide pillar; 8. Spring; 9. Lower template; 10. Pilot pin; 11. First guiding hole; 12. Second guiding hole; 13. Elastic member; 14. Blanking boss; 15. Draw plate; 16. Blanking punch; 17. Needle roller bearing; 18. Small stripper plate; 19. Pressure block; 21. Rotating shaft sleeve; 22. Blanking die; 211. First pilot hole; 212. Mounting hole; 221. Die inner hole; 31. Second pilot hole; 32. Positioning groove; 41. First movable part; 42. Second movable part; 101. Limit step surface; 102. First guiding inclined surface; 151. Helical tooth; 152. Second guiding inclined surface; Detailed implementation mode

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention belong to the scope of protection of the present invention.

[0027] Embodiment:

[0028] As Figures 1 - 4 shown, the assembly process of the blanking station structure of the large rotary die described in this embodiment. The large rotary die is mainly used for the forming of iron core sheets during the forming process of the motor iron core. However, the iron core sheets are finally formed at the blanking station. Therefore, the assembly process of the blanking station structure includes the following steps:

[0029] S1. Tightly fit and install the blanking die 22 with an outer diameter having an over-surplus amount into the mounting hole 212 with an over-surplus amount on the rotating shaft sleeve 21. After the blanking die 22 is installed, the step in the mounting hole 212 limits and supports the blanking die 22, and the upper end surface of the blanking die 22 is flush with the upper end surface of the rotating shaft sleeve 21 to form the blanking component 2. Among them, the blanking die 22 is generally assembled by tools such as a press; the rotating shaft sleeve 21, the blanking die 22, and the outer shape of the mounting hole 212 of the rotating shaft sleeve 21 are all circular structures for easy rotation; the lower template 9 is fixed to the bottom of the lower die base 1.

[0030] S2. Drilling is carried out on the upper end surface of the rotating shaft sleeve 21 with the center of the die inner hole 221 of the blanking die 22 as the center coordinate to form a plurality of first pilot holes 211 arranged in a circular array on the upper end surface of the rotating shaft sleeve 21. The first pilot holes 211 are circular structures, and generally four first pilot holes 211 are set.

[0031] S3. After the needle roller bearing 17 is installed in the blanking channel of the lower die base 1, the blanking component 2 is rotatably installed in the blanking channel of the lower die base 1, and the blanking plate seat 3 is stacked on the upper end surface of the blanking component 2. The needle roller bearing 17 makes the rotation of the blanking component 2 smoother and improves the service performance.

[0032] S4. One end of the guide pillar 7 is inserted into the positioning hole of the lower die base 1, and one end of the guide pillar 7 abuts against the spring 8 in the first guiding hole 11. After the middle part of the guide pillar 7 passes through the first guiding hole 11 of the blanking plate seat 3, the blanking plate seat 3 is positioned on the lower die base 1, achieving the position positioning of the blanking plate seat 3 and preparing for machining the second guiding holes 31 on the blanking plate seat 3. The spring 8 arranged in the guiding hole enables the upper die and the lower die to automatically open after losing pressure.

[0033] S5. Drilling the blanking plate seat 3 with the center of the inner hole 221 of the blanking die 22 as the center coordinate, so as to form a plurality of second guiding holes 31 arranged in an annular array through the blanking plate seat 3. The number of the second guiding holes 31 is the same as that of the first guiding holes 211, so that the plurality of second guiding holes 31 are respectively arranged corresponding to the positions of the first guiding holes 211. The second guiding holes 31 are of circular structure. Generally, four second guiding holes 31 are set. This step makes the position accuracy between the first guiding holes 211 and the second guiding holes 31 higher.

[0034] S6. Inlay sleeves 6 are assembled in both the first guiding holes 211 and the second guiding holes 31; the function of the inlay sleeves 6 is to provide a smoother movement for the guiding pins 10.

[0035] S7. Configure multiple guiding pins 10 respectively adapted to each inlay sleeve 6. After the multiple guiding pins 10 pass through the fixed plate 4, the fixed plate 4 gradually approaches the blanking plate seat 3 until it is stacked on the blanking plate seat 3 and fixedly arranged. At this time, one end of the guiding pin 10 passes through the inlay sleeve 6 of the second guiding hole 31 and corresponds to the position of the inlay sleeve 6 of the first guiding hole 211, and the blanking punch 16 on the fixed plate 4 is positioned at the positioning through hole of the blanking plate seat 3, so that after the blanking punch 16 is positioned, it corresponds to the position of the inner hole 221 of the blanking die 22. During the process that the small blanking plate 18 gradually approaches the side surface of the blanking plate seat 3 facing the blanking die 22, each guiding pin 10 passes through the small blanking plate 18 and is attached to and fixed on the blanking plate seat 3, and the blanking punch 16 is positioned in the through hole of the small blanking plate 18. When the small blanking plate 18 is attached, the blanking punch 16 correspondingly inserts into the inner hole 221 of the blanking die 22, and the guiding pin 10 can be inserted into the inlay sleeve 6 of the first guiding hole 211.

[0036] Preferably, the extraction plate 15 is slidably installed in the transverse channel on the fixed plate 4. The first movable part 41 of the blanking boss 14 is placed in the through hole on the fixed plate 4 that communicates with the transverse channel. The second movable part 42 of the blanking boss 14 is placed in the positioning perforation of the stripper plate seat 3. The blanking punch 16 is fixed on the second movable part 42 of the blanking boss 14. A limiting step is provided between the first movable part 41 and the second movable part 42 of the blanking boss 14. On the side surface of the first movable part 41 of the blanking boss 14 facing the extraction plate 15 and on the side surface of the extraction plate 15 facing the blanking boss 14, a plurality of helical teeth 151 are arranged at intervals. The helical teeth 151 on the blanking boss 14 and the helical teeth 151 on the extraction plate 15 are arranged in corresponding cooperation. A cylinder is used to control the translation of the extraction plate 15 so that the helical teeth 151 at the two places are correspondingly arranged or misaligned. One side of the helical tooth 151 is an inclined surface and the other side is a vertical surface.

[0037] At least one pilot pin 10 is located at one end of the extraction plate 15. A first inclined guiding surface is provided on the pilot pin 10 located at one end of the extraction plate 15. A second inclined guiding surface is provided at one end of the extraction plate 15. The first inclined guiding surface and the second inclined guiding surface cooperate with each other. When the mold is closed while the rotary shaft sleeve 21 has not rotated in place, the pilot pin 10 is caused to abut against the upper end surface of the rotary shaft sleeve 21, prompting the pilot pin 10 to rise. After the pilot pin 10 with the first inclined guiding surface rises, the first inclined guiding surface and the second inclined guiding surface cooperate to drive the extraction plate 15 to displace to the right, so that the tooth grooves between the helical teeth 151 at one position and the helical teeth 151 at another position correspond, causing the blanking punch 16 to abut against the upper end surface of the blanking die 22 and prompting the blanking punch 16 to rise, so that the helical teeth 151 are inserted into the tooth grooves, thus avoiding the technical problem of damage caused by the collision between the convex die and the concave die.

[0038] S8. The upper die base 5 gradually approaches the fixed plate 4 so that the other end of the guide post 7 is inserted into the second guiding hole 12 of the upper die base 5, and the other end of the guide post 7 abuts against the spring 8 in the second guiding hole 12. The spring 8 provided in the guiding hole enables the upper die and the lower die to automatically open the mold after losing pressure. At the same time, one end of each pilot pin 10 is respectively installed on the upper die base 5 through an elastic member 13. The elastic member 13 enables the pilot pin 10 to automatically reset. The elastic member 13 generally adopts a spring 8. The middle convex ring of the guide post 7 is limited between the pressure block 19 and the stripper plate, and the guide post 7 is fixed on the stripper plate seat 3 through the pressure block 19.

[0039] In this embodiment, a positioning groove 32 is formed on the side surface of the stripper plate seat 3 facing the blanking die 22, and the small stripper plate 18 is fixed in the positioning groove 32. Its structural setting makes the small stripper stable and reliable after installation.

[0040] In this embodiment, a plurality of assembly holes corresponding to the positions of the piloting pins 10 are provided on the upper die base 5. Elastic members 13 are installed in each of the assembly holes. One port of each assembly hole is closed by a plug. The other end of the piloting pin 10 is inserted into the interior thereof from the other end of the assembly hole to abut against one end of the elastic member 13, and the other end of the elastic member 13 abuts against the plug. A limiting step surface 101 is formed in the middle of the piloting pin 10. The limiting step surface 101 is in contact with the fixing plate 4 to limit the position of the piloting pin 10 after resetting. The piloting pin 10 does not have a first guiding inclined surface 102. The limiting step surface 101 on the guiding portion with the first guiding inclined surface 102 is matched with and limited by one end of the ejector plate 15.

[0041] The present invention is not limited to the above best embodiment. Any person can obtain other various forms of products under the inspiration of the present invention. However, no matter what changes are made in its shape or structure, as long as it has a technical solution identical or similar to that of the present application, it falls within the protection scope of the present invention.

Claims

1. An assembly process for the blanking station structure of a large slewing die, characterized in that, The steps are as follows: S1. Tightly and fittingly install a blanking concave die (22) with an outer diameter having an excessive surplus amount into a mounting hole (212) with an excessive surplus amount on a rotary shaft sleeve (21), and make the upper end surface of the blanking concave die (22) flush with the upper end surface of the rotary shaft sleeve (21) to form a blanking assembly (2); S2. Use the center position of the inner hole (221) of the blanking concave die (22) as the center coordinate to drill holes on the upper end surface of the rotary shaft sleeve (21) to form a plurality of first guiding holes (211) arranged in an annular array on the upper end surface of the rotary shaft sleeve (21); S3. Rotatably install the blanking assembly (2) in the blanking channel of the lower die base (1), and stack a stripper plate seat (3) on the upper end surface of the blanking assembly (2); S4. Insert one end of a guide pillar (7) into a positioning hole of the lower die base (1), and pass the middle part of the guide pillar (7) through a first guiding hole (11) of the stripper plate seat (3) to position the stripper plate seat (3) on the lower die base (1); S5. Use the center position of the inner hole (221) of the blanking concave die (22) as the center coordinate to drill holes in the stripper plate seat (3) to form a plurality of second guiding holes (31) arranged in an annular array and penetrating through the stripper plate seat (3). The number of the second guiding holes (31) is the same as the number of the first guiding holes (211) so that the plurality of second guiding holes (31) are respectively arranged corresponding to the positions of the first guiding holes (211); S6. Assemble bushings (6) in both the first guiding holes (211) and the second guiding holes (31); S7. Configure a plurality of guiding pins (10) respectively adapted to the bushings (6). After the plurality of guiding pins (10) pass through a fixing plate (4), the fixing plate (4) gradually approaches the stripper plate seat (3) until it is stacked on the stripper plate seat (3) and fixedly arranged. At this time, one end of the guiding pin (10) passes through the bushing (6) of the second guiding hole (31) and corresponds to the position of the bushing (6) of the first guiding hole (211), and a blanking punch (16) on the fixing plate (4) is positioned at a positioning through hole of the stripper plate seat (3) so that after the blanking punch (16) is positioned, it corresponds to the position of the inner hole (221) of the blanking concave die (22); S8. The upper die base (5) gradually approaches the fixing plate (4) so that the other end of the guide pillar (7) is inserted into a second guiding hole (12) of the upper die base (5), and one end of each guiding pin (10) is respectively installed on the upper die base (5) through an elastic member (13).

2. The assembly process of the blanking station structure of the giant swing die according to claim 1, characterized in that, In step S7, during the process that a small stripper plate (18) gradually approaches the side surface of the stripper plate seat (3) facing the blanking concave die (22), each guiding pin (10) passes through the small stripper plate (18) and then abuts against and is fixed to the stripper plate seat (3), and the blanking punch (16) is positioned in a through hole of the small stripper plate (18).

3. The assembly process of the blanking station structure of the large swing die according to claim 2, characterized in that, A positioning groove (32) is formed on the side surface of the stripper plate seat (3) facing the blanking concave die (22), and the small stripper plate (18) is fixed in the positioning groove (32).

4. The assembly process of the blanking station structure of the large swing die according to claim 1, characterized in that, A plurality of assembly holes corresponding to the positions of the respective pilot pins (10) are provided in the upper die base (5). Elastic members (13) are installed in each of the assembly holes. One port of the assembly hole is closed by a plug, and the other end of the pilot pin (10) is inserted into the interior thereof through the other end of the assembly hole to abut against one end of the elastic member (13), and the other end of the elastic member (13) abuts against the plug.

5. The assembly process of the blanking station structure of the giant slalom mold according to claim 1 or 2 or 3, characterized in that, In step S7, the draw plate (15) is slidably installed in the transverse channel on the fixed plate (4). The first movable portion (41) of the blanking boss (14) is placed in the through hole on the fixed plate (4) communicating with the transverse channel, and the second movable portion (42) of the blanking boss (14) is placed in the positioning through hole of the stripper plate seat (3). The blanking punch (16) is fixed to the second movable portion (42) of the blanking boss (14). A limiting step is provided between the first movable portion (41) and the second movable portion (42) of the blanking boss (14). A plurality of mutually spaced oblique teeth (151) are provided on the side surface of the first movable portion (41) of the blanking boss (14) facing the draw plate (15) and on the side surface of the draw plate (15) facing the blanking boss (14). The oblique teeth (151) on the blanking boss (14) are arranged in corresponding cooperation with the oblique teeth (151) on the draw plate (15).

6. The assembly process of the blanking station structure of the large swing die according to claim 1, characterized in that, The shapes of the rotary shaft sleeve (21), the blanking die (22), and the mounting hole (212) of the rotary shaft sleeve (21) are all circular structures.

7. According to the assembly process of the blanking station structure of the large rotary die according to claim 5, at least one pilot pin (10) is located at one end of the draw plate (15). A first inclined guide surface is provided on the pilot pin (10) located at one end of the draw plate (15), and a second inclined guide surface is provided at one end of the draw plate (15). The first inclined guide surface and the second inclined guide surface cooperate with each other.

8. The assembly process of the blanking station structure of the large swing die according to claim 7, characterized in that, A limiting step surface (101) is formed in the middle of the pilot pin (10).

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