Spring grinder for special-shaped spring production

Abstract

The invention relates to the technical field of spring grinding, and discloses a spring grinding machine for special-shaped spring production, the spring grinding machine comprises an operation table, a material placing frame is fixedly mounted at the top of the operation table, a low position groove and a round opening are formed in the material placing frame, and driving motors are symmetrically arranged on the two sides of the material placing frame; a reciprocating lead screw is rotatably mounted at the output end of the driving motor, a workpiece mounting mechanism and a polishing adjusting mechanism are movably arranged above the operation table, and a swing arm is arranged, so that the special-shaped spring placed on a swing frame is clamped between a mounting plate and a limiting plate, the special-shaped spring is conveniently limited in the polishing process, and the polishing efficiency is improved. The special-shaped spring can not move under the elastic acting force of the special-shaped spring, the grinding adjusting mechanism can adapt to the surface radian change of the special-shaped spring, and the grinding effect and precision are further improved.

Description

Technical Field

[0001] The invention relates to the technical field of spring grinding, in particular to a spring grinding machine for producing special-shaped springs. Background Art

[0002] Special-shaped springs are springs with special shapes, structures and properties compared to ordinary cylindrical helical springs. According to the shape, special-shaped springs include but are not limited to arc springs, annular springs, S-shaped springs, Z-shaped springs, and triangular springs. The manufacturing process of special-shaped springs is relatively complicated, usually including material selection, molding, heat treatment, surface treatment and other links;

[0003] For arc springs, during surface treatment, in the prior art, the grinding equipment cannot adjust the grinding space according to the shape of the arc spring. Therefore, during the grinding process, the operator needs to repeatedly and multiple times adjust the angle and position of the special-shaped spring for grinding. The operation is very cumbersome and the grinding accuracy is low. In addition, during the grinding process, since the curvature of the two ends of the arc spring may be different, it is inconvenient to fix it. The spring needs to be held by hand for grinding, which is prone to danger. For this reason, we propose a spring grinding machine for the production of special-shaped springs. Summary of the invention

[0004] The purpose of the present invention is to provide a spring grinding machine for producing special-shaped springs to solve the problems raised in the above-mentioned background technology. To achieve the above-mentioned purpose, the present invention provides the following technical solutions: comprising an operating table, a swing rack is fixedly installed on the top of the operating table, a low-position slot and a round opening are respectively opened on the swing rack, a driving motor is symmetrically arranged on both sides of the swing rack, a reciprocating screw rod is rotatably installed on the output end of the driving motor, and a workpiece mounting mechanism and a grinding adjustment mechanism are movably arranged on the top of the operating table;

[0005] The workpiece mounting mechanism comprises a mounting plate connected to a reciprocating screw rod, a folded angle plate is movably mounted on one side of the surface of the mounting plate, a rack is arranged on the top side surface of the folded angle plate and is slidably connected to the mounting plate, a gear 1 is meshed on the side surface of the rack, a pulley group is arranged on the top transmission of the gear 1, a rotating shaft is connected to the bottom transmission of the end of the pulley group away from the gear, a rotating block is fixedly connected to the bottom outer edge of the rotating shaft, a cross slide is slidably connected to the outside of the rotating block, a control plate is fixedly connected to the bottom of one end of the cross slide, and an opening and closing guide groove is provided on the control plate;

[0006] The bottom of the mounting plate is rotatably connected to an inner circular housing, the rotating shaft is rotatably connected thereto, the cross slide bar is slidably connected thereto, the middle of the control plate is slidably connected to the inner circular housing, and a compression spring is sleeved at the connection, the top of the compression spring is provided with a locking rod rotatably connected to the inner circular housing, and the bottom end of the locking rod is movably clamped with the control plate through an opening and closing guide groove;

[0007] The bottom of the inner circular housing is rotatably connected to a second gear, the two sides of the second gear are respectively meshed with a limiting plate, the top of the limiting plate is fixedly connected with a rubber pad, and the top of one of the limiting plates is fixedly connected with the control plate;

[0008] Below the angled plate is provided a trigger rod fixedly connected to the operating table.

[0009] Preferably, the workpiece mounting mechanism further includes a release control rod fixedly installed on the blanking rack, above the release control rod is provided a swing arm, one end of the swing arm is hinged to the inner circular housing, the other end is movably connected with a first tension spring, on the top of the swing arm near one side of the inner circular housing is slidably connected a wedge-shaped member, the wedge-shaped member is in sliding contact with the inner circular housing, the side surface of the wedge-shaped member is movably abutted against a push block slidably connected to the inner circular housing, and the surface of the push block abuts against the locking rod.

[0010] Preferably, the top of the rotating shaft is fixedly connected with a top ring, the inner surface of the top ring is provided with an internal tooth opening, perpendicular to the top ring above the belt pulley set is fixedly connected with an adapter column at the bottom of the turntable, the adapter column is hinged with a resisting plate, on the side of the resisting plate close to the adapter column is fixedly connected with a second tension spring, the resisting plate is movably clamped with the top ring, and the adapter column is rotatably connected with the top ring.

[0011] Preferably, the top of the mounting plate is fixedly provided with a servo motor, the output end of the servo motor is rotatably connected with a worm, the side of the worm is meshed with a worm wheel, and the bottom of the worm wheel is fixedly connected with the inner circular housing.

[0012] Preferably, the grinding adjustment mechanism includes a mounting frame fixedly installed on the operating table, one side of the mounting frame is provided with a support, the bottom of the contact head is hinged to the support, the middle of the support is hinged with a first rotating plate, the top of the first rotating plate is hinged to the top of the contact head, on the side surface of the top of the first rotating plate is rotatably connected with an adapter rod, the end of the adapter rod away from the first rotating plate is rotatably connected with a cross pull rod, and the cross pull rod is slidably connected with the mounting frame.

[0013] Preferably, at one end of the mounting frame relative to the support is provided a bottom support plate, at the bottom of one side of the bottom support plate is provided a grinding motor, on the bottom support plate is rotatably provided a grinding belt, and the grinding belt is rotatably connected with the grinding motor.

[0014] Preferably, a second rotating plate is rotatably connected to the side surface of the mounting frame. The top of the second rotating plate is hinged to the other end of the horizontal pull rod. The bottom of the second rotating plate is fixedly connected to a first conical wheel. The side surface of the first conical wheel is engaged with a second conical wheel. The side of the second conical wheel opposite to the first conical wheel is engaged with a third conical wheel. The side surface of the third conical wheel is fixedly connected to a reverse swing rod, and the reverse swing rod is movably clamped with the side surface of the bottom support rod.

[0015] Preferably, a central connecting rod is fixedly connected to the top of the bottom support plate, and the central connecting rod is movably connected to the mounting frame.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] 1. In the present invention, through the workpiece mounting mechanism provided, during the downward movement of the mounting plate, the rotating block rotates around the axis of the rotating shaft, and one end of the locking rod catches the other side of the opening and closing guide groove, so that the two limiting plates are synchronously retracted, and the mutually separated ends do not exceed the side surface of the inner circular housing. In this state, the special-shaped spring clamped between the mounting plate and the limiting plate will be directly released and fall off. After grinding is completed, the special-shaped spring can be automatically removed, improving the operation efficiency.

[0018] 2. In the present invention, through the swing arm provided, the release control rod swings upward with its connection point with the inner circular housing as the axis. The bottom of the wedge-shaped member pushes the push block outward, causing the locking rod to deflect, and the connection between its end and the rear end of the opening and closing guide groove is disengaged, so that the two limiting plates are synchronously opened outward, and the special-shaped spring placed on the material placing rack is clamped between the mounting plate and the limiting plate, facilitating the limitation of the special-shaped spring during the grinding process. Using the elastic force of the special-shaped spring, the special-shaped spring can be prevented from moving.

[0019] 3. In the present invention, through the grinding adjustment mechanism provided, the contact head closely adheres to the surface of the special-shaped spring. When the second rotating plate swings to one side, it drives the reverse swing rod to swing in the direction opposite to the swing direction of the second rotating plate. Thus, by pulling or pushing the bottom support plate, the grinding belt and the bottom support plate rotate around the connection point between the central connecting rod and the mounting frame, and can adapt to the change in the surface curvature of the special-shaped spring, further improving the grinding effect and accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 is a front view structure schematic diagram of the present invention;

[0022] Figure 3 is a schematic diagram of the structure of the workpiece mounting mechanism of the present invention;

[0023] Figure 4 for the present inventionFigure 3 Schematic diagram of the enlarged structure of the A area in the middle;

[0024] Figure 5 It is a schematic diagram of the cutaway structure of the inner circular shell of the present invention;

[0025] Figure 6 It is a schematic diagram of the structure of the swing arm and the tension spring 1 of the present invention;

[0026] Figure 7 It is a schematic diagram of the installation structure of the top ring and the rotating shaft of the present invention;

[0027] Figure 8 For the present invention Figure 7 Schematic diagram of the enlarged structure of the middle B area;

[0028] Figure 9 It is a structural schematic diagram of the grinding adjustment mechanism of the present invention;

[0029] Figure 10 It is a schematic diagram of the installation structure of the second rotating plate and the reverse swing arm of the present invention;

[0030] Figure 11 It is a schematic diagram of the installation structure of the installation frame and the axial connecting rod of the present invention.

[0031] In the figure:

[0032] 1. Operating table; 2. Material swing rack; 3. Low position slot; 4. Round mouth; 5. Driving motor; 6. Reciprocating screw rod;

[0033] 7. Workpiece mounting mechanism; 701. Mounting plate; 702. Angle plate; 703. Rack; 704. Gear 1; 705. Pulley assembly; 706. Rotating shaft; 707. Rotating block; 708. Cross slide bar; 709. Control board; 710. Opening and closing guide groove; 711. Inner cylindrical shell; 712. Compression spring; 713. Stop rod; 714. Gear 2; 715. Limiting plate; 716. Rubber pad; 717. Release control rod; 718. Swing arm; 719. Tension spring 1; 720. Wedge; 721. Push block; 722. Top ring; 723. Inner tooth mouth; 724. Connecting column; 725. Butt plate; 726. Tension spring 2; 727. Servo motor; 728. Worm; 729. Worm wheel;

[0034] 8. Grinding adjustment mechanism; 801. Mounting frame; 802. Support; 803. Contact head; 804. Turntable 1; 805. Connecting rod; 806. Lateral tie rod; 807. Bottom support plate; 808. Grinding motor; 809. Grinding belt; 810. Turntable 2; 811. Conical wheel 1; 812. Conical wheel 2; 813. Conical wheel 3; 814. Reverse swing rod; 815. Axial connecting rod;

[0035] 9. Trigger lever. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technical personnel in this field without creative work are within the scope of protection of the present invention.

[0037] See also Figures 1 to 5 The present invention provides a technical solution: comprising an operating table 1, a material swinging rack 2 is fixedly installed on the top of the operating table 1, a low-position slot 3 and a round opening 4 are respectively opened on the material swinging rack 2, a driving motor 5 is symmetrically arranged on both sides of the material swinging rack 2, a reciprocating screw rod 6 is rotatably installed on the output end of the driving motor 5, and a workpiece mounting mechanism 7 and a grinding adjustment mechanism 8 are movably arranged on the top of the operating table 1;

[0038] The workpiece mounting mechanism 7 includes a mounting plate 701 connected to the reciprocating screw 6, a folded angle plate 702 is movably mounted on one side of the surface of the mounting plate 701, a rack 703 slidably connected to the mounting plate 701 is arranged on the top side of the folded angle plate 702, a gear 704 is meshed with the side of the rack 703, a pulley group 705 is arranged on the top transmission of the gear 704, a rotating shaft 706 is connected to the bottom transmission of the end of the pulley group 705 away from the gear, a rotating block 707 is fixedly connected to the bottom outer edge of the rotating shaft 706, a cross slide 708 is slidably connected to the outside of the rotating block 707, a control plate 709 is fixedly connected to the bottom of one end of the cross slide 708, and an opening and closing guide groove 710 is provided on the control plate 709;

[0039] The bottom of the mounting plate 701 is rotatably connected with an inner circular shell 711, the rotating shaft 706 is rotatably connected with it, the cross slide bar 708 is slidably connected with it, the middle part of the control plate 709 is slidably connected with the inner circular shell 711, and a compression spring 712 is sleeved and installed at the connection, and a locking rod 713 rotatably connected with the inner circular shell 711 is provided on the top of the compression spring 712, and the bottom end of the locking rod 713 is movably connected with the control plate 709 through an opening and closing guide groove 710;

[0040] The bottom of the inner circular shell 711 is rotatably connected to a second gear 714, and the two sides of the second gear 714 are respectively engaged with limit plates 715, and the top of the limit plates 715 is fixedly connected to a rubber pad 716, and the top of one of the limit plates 715 is fixedly connected to the control board 709;

[0041] A trigger rod 9 fixedly connected to the operating table 1 is provided below the angled plate 702;

[0042] A servo motor 727 is fixedly arranged on the top of the mounting plate 701. The output end of the servo motor 727 is rotationally connected with a worm 728. A worm gear 729 is meshed on the side of the worm 728. The bottom of the worm gear 729 is fixedly connected with the inner circular housing 711;

[0043] In this embodiment, a torsion spring is arranged at the connection between the folding angle plate 702 and the mounting plate 701, so that the folding angle plate 702 can return to its original position after flipping;

[0044] In this embodiment, a spring is sleeved and installed at the connection between the rack 703 and the mounting plate 701, so that the end of the rack 703 contacts the top surface of the folding angle plate 702 in the initial state;

[0045] In this embodiment, as Figure 4 shown, one side of the opening and closing guide groove 710 away from the locking rod 713 is opened into a notch. When the locking rod 713 contacts the notch of the opening and closing guide groove 710, the limiting plate 715 is in a retracted state;

[0046] In this embodiment, after the servo motor 727 drives the special-shaped spring to be polished, the inner circular housing 711 and the mounting plate 701 are kept perpendicular to each other. And in the initial state, the inner circular housing 711 and the mounting plate 701 are also kept perpendicular to each other, and can be accurately aligned;

[0047] Please refer to Figures 6 to 8 , the workpiece mounting mechanism 7 further includes a release control rod 717 fixedly mounted on the blanking rack 2. Above the release control rod 717, there is a swing arm 718. One end of the swing arm 718 is hinged to the inner circular housing 711, and the other end is movably connected with a first tension spring 719. A wedge-shaped member 720 is slidably connected to the top of the swing arm 718 near the inner circular housing 711. The wedge-shaped member 720 is in sliding contact with the inner circular housing 711. A push block 721 slidably connected to the inner circular housing 711 is movably abutted against the side of the wedge-shaped member 720. The surface of the push block 721 abuts against the locking rod 713;

[0048] The top of the rotating shaft 706 is fixedly connected with a top ring 722. An internal tooth groove 723 is formed on the inner surface of the top ring 722. A connecting column 724 is fixedly connected to the bottom of the turntable perpendicular to the top ring 722 above the belt pulley set 705. A pressing plate 725 is hinged on the connecting column 724. A second tension spring 726 is fixedly connected to the side of the pressing plate 725 close to the connecting column 724. The pressing plate 725 is movably clamped with the top ring 722. The connecting column 724 is rotatably connected with the top ring 722;

[0049] Please refer to Figures 9 to 11, the present invention provides a technical solution: The grinding adjustment mechanism 8 includes a mounting frame 801 fixedly installed on the operating table 1. One side of the mounting frame 801 is provided with a support 802. The bottom of a contact head 803 is hinged to the support 802. The middle of the support 802 is hinged to a first rotating plate 804. The top of the first rotating plate 804 is hinged to the top of the contact head 803. A connecting rod 805 is rotatably connected to the side of the top of the first rotating plate 804. One end of the connecting rod 805 away from the first rotating plate 804 is rotatably connected to a cross rod 806. The cross rod 806 is slidably connected to the mounting frame 801;

[0050] At one end of the mounting frame 801 relative to the support 802, there is a bottom support plate 807. At the bottom of one side of the bottom support plate 807, there is a grinding motor 808. A grinding belt 809 is rotatably arranged on the bottom support plate 807. The grinding belt 809 is rotatably connected to the grinding motor 808;

[0051] A second rotating plate 810 is rotatably connected to the side of the mounting frame 801. The top of the second rotating plate 810 is hinged to the other end of the cross rod 806. The bottom of the second rotating plate 810 is fixedly connected to a first tapered wheel 811. A second tapered wheel 812 is meshed with the side of the first tapered wheel 811. A third tapered wheel 813 is meshed with the side of the second tapered wheel 812 relative to the first tapered wheel 811. A reverse swing rod 814 is fixedly connected to the side of the third tapered wheel 813. The reverse swing rod 814 is movably clamped to the side of the bottom support rod;

[0052] The top of the bottom support plate 807 is fixedly connected to an axial center connecting rod 815. The axial center connecting rod 815 is movably connected to the mounting frame 801;

[0053] In this embodiment, the special-shaped spring with a curved surface is a spring with a special shape and structure. Different from the ordinary cylindrical helical spring, its outer shape is usually not a regular cylindrical shape;

[0054] In this embodiment, the rotation direction of the grinding belt 809 is set opposite to the rotation direction of the special-shaped spring;

[0055] The usage method and advantages of the present invention: The grinding machine for special-shaped springs in production works as follows:

[0056] Such as Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 、 Figure 10 、 Figure 11 shown:

[0057] S1: In the initial state, the workpiece mounting mechanism 7 is transferred to the top of the operating table 1, and the limit plate 715 is in the opened state. The operator places the special-shaped spring to be polished vertically at the circular mouth 4 of the swing rack 2, and then starts the driving motor 5 to drive the reciprocating screw 6 to rotate, so that the mounting plate 701 moves downward. During the process, the angle plate 702 on its side is supported by the trigger rod 9, so that the angle plate 702 rotates and swings upward, pushing the rack 703 on the mounting plate 701 to slide toward the middle thereof, and in the process, the gear 1 704 is driven to rotate, and the pulley group 705 is provided, so that the pulley group 705 drives the rotating shaft 706 connected to the other end to rotate. When the rotating shaft 706 rotates, it drives the rotating block 707 fixedly connected to its bottom to rotate synchronously, and the rotating block 707 rotates around the axis of the rotating shaft 706. During the process, the cross slide bar 708 is driven to one side When the locking cam 710 is in the unlocked state, the locking cam 712 is engaged with the locking cam 714, and the locking cam 715 is engaged with the locking cam 716. When the locking cam 710 is in the unlocked state, the locking cam 716 is engaged with the locking cam 716, and the locking cam 716 is engaged with the locking cam 716.

[0058] S2: As the mounting plate 701 continues to move downward, the swing arm 718 contacts the top of the release control rod 717 and is resisted, causing the release control rod 717 to swing upward with the connection between it and the inner cylindrical shell 711 as the axis, and the second tension spring 726 is pulled outward, and the swing arm 718 drags the wedge 720 to slide inside the inner cylindrical shell 711 toward the push block 721. The bottom of the wedge 720 pushes the push block 721 outward, causing the locking rod 713 to deflect, and its end is disengaged from the clamping point at the rear end of the opening and closing guide groove 710, and slides on the side of the opening and closing guide groove 710. The compression spring 712 is quickly released, so that the control plate 709 drives one of the limit plates 715 to be quickly released outwards, and the other limit plate 715 is synchronously released through the gear 2 714, so that the two limit plates 715 are synchronously opened outwards, and the opening position is located at the low position slot 3, so that the special-shaped spring placed on the swing rack 2 is stuck between the mounting plate 701 and the limit plate 715, and the rubber pad 716 on the limit plate 715 can prevent the position of the special-shaped spring from shifting during the grinding process, and then the reciprocating screw rod 6 drives the workpiece mounting mechanism 7 to move upward, so that the special-shaped spring is lifted up for the grinding operation;

[0059] S3: After the mounting plate 701 passes the grinding belt 809, the servo motor 727 is started, driving the worm gear 729 to rotate through the worm 728. The worm gear 729 drives the inner circular housing 711 at the bottom to rotate, and the special-shaped spring rotates synchronously. During this process, the inner circular housing 711 drives the top ring 722 to rotate reversely through the rotating shaft 706. During the process, the edge of the inner tooth opening 723 inside the top ring 722 presses the abutting plate 725 against the connecting post 724, compressing the second tension spring 726, and the abutting plate 725 is not engaged with the inner tooth opening 723. During the grinding process, to adapt to the surface curvature of the special-shaped spring, as the special-shaped spring continuously rises, the contact head 803 closely adheres to the surface of the special-shaped spring. When the surface curvature of the special-shaped spring changes, the angle at the connection between the contact head 803 and the support 802 changes, simultaneously driving the first rotating plate 804 and the connecting rod 805 to change synchronously, moving left or right, causing the cross pull rod 806 to slide at the bottom of the mounting frame 801, causing the second rotating plate 810 on the other side to deflect in the same direction as the first rotating plate 804. Through the first, second, and third tapered wheels, the deflection direction of the second rotating plate 810 is mirrored. When the second rotating plate 810 swings to one side, it drives the reverse swing rod 814 to swing in the direction opposite to the swing direction of the second rotating plate 810, thereby pulling or pushing the bottom support plate 807 to make the grinding belt 809 fit the surface of the special-shaped spring, adapting to the change in the surface curvature of the special-shaped spring, and grinding the special-shaped spring. The grinding belt 809 and the bottom support plate 807 rotate around the connection between the axial center connecting rod 815 and the mounting frame 801 as the axis.

[0060] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A spring grinding machine for producing special-shaped springs, characterized in that, The invention comprises an operating table (1), a material swinging frame (2) is fixedly mounted on the top of the operating table (1), a low-position groove (3) and a round opening (4) are respectively provided on the material swinging frame (2), a driving motor (5) is symmetrically arranged on both sides of the material swinging frame (2), a reciprocating screw rod (6) is rotatably mounted on the output end of the driving motor (5), and a workpiece mounting mechanism (7) and a grinding adjustment mechanism (8) are movably arranged on the top of the operating table (1); The workpiece mounting mechanism (7) comprises a mounting plate (701) connected to a reciprocating screw rod (6); a folded angle plate (702) is movably mounted on one side of the surface of the mounting plate (701); a rack (703) slidably connected to the mounting plate (701) is arranged on the top side of the folded angle plate (702); a gear one (704) is meshed with the side of the rack (703); a pulley group (705) is arranged on the top of the gear one (704); a bottom end of the pulley group (705) away from the gear is connected to a rotating shaft (706); a rotating block (707) is fixedly connected to the bottom outer edge of the rotating shaft (706); a cross slide bar (708) is slidably connected to the outside of the rotating block (707); a control plate (709) is fixedly connected to the bottom of one end of the cross slide bar (708); an opening and closing guide groove (710) is provided on the control plate (709); The bottom of the mounting plate (701) is rotatably connected to an inner circular shell (711), the rotating shaft (706) is rotatably connected to it, the cross slide bar (708) is slidably connected to it, the middle of the control plate (709) is slidably connected to the inner circular shell (711), and a compression spring (712) is sleeved and installed at the connection, and a locking rod (713) rotatably connected to the inner circular shell (711) is provided on the top of the compression spring (712), and the bottom end of the locking rod (713) is movably locked with the control plate (709) through an opening and closing guide groove (710); The bottom of the inner cylindrical shell (711) is rotatably connected to a second gear (714), both sides of the second gear (714) are respectively meshed with limit plates (715), the top of the limit plates (715) is fixedly connected to a rubber pad (716), and the top of one of the limit plates (715) is fixedly connected to the control board (709); A trigger rod (9) fixedly connected to the operating table (1) is provided below the angled plate (702).

2. The spring grinding machine for producing special-shaped springs according to claim 1, characterized in that: The workpiece mounting mechanism (7) further includes a release control rod (717) fixedly mounted on the blanking rack (2). Above the release control rod (717), there is a swing arm (718). One end of the swing arm (718) is hinged to the inner circular housing (711), and the other end is movably connected to a first tension spring (719). On the top of the swing arm (718) and close to one side of the inner circular housing (711), there is a wedge-shaped member (720) slidably connected. The wedge-shaped member (720) is in sliding contact with the inner circular housing (711). On the side of the wedge-shaped member (720), there is a push block (721) movably abutted and slidably connected to the inner circular housing (711). The surface of the push block (721) abuts against the locking rod (713).

3. The spring grinding machine for producing special-shaped springs according to claim 1, characterized in that: At the top of the rotating shaft (706), there is a top ring (722) fixedly connected. An internal tooth groove (723) is formed on the inner surface of the top ring (722). A connecting column (724) is fixedly connected to the bottom of the turntable above the top ring (722) perpendicular to the pulley group (705). A pressing plate (725) is hinged on the connecting column (724). A second tension spring (726) is fixedly connected to the side of the pressing plate (725) close to the connecting column (724). The pressing plate (725) is movably clamped with the top ring (722). The connecting column (724) is rotatably connected to the top ring (722).

4. The spring grinding machine for producing special-shaped springs according to claim 1, wherein: On the top of the mounting plate (701), there is a servo motor (727) fixedly arranged. The output end of the servo motor (727) is rotatably connected to a worm (728). A worm gear (729) is meshed on the side of the worm (728). The bottom of the worm gear (729) is fixedly connected to the inner circular housing (711).

5. A spring grinding machine for producing special-shaped springs according to claim 1, characterized in that: The grinding adjustment mechanism (8) includes a mounting frame (801) fixedly mounted on the operating table (1). On one side of the mounting frame (801), there is a support (802). The bottom of a contact head (803) is hinged on the support (802). In the middle of the support (802), there is a first rotating plate (804) hinged. The top of the first rotating plate (804) is hinged to the top of the contact head (803). On the side of the top of the first rotating plate (804), there is an adapter rod (805) rotatably connected. The end of the adapter rod (805) away from the first rotating plate (804) is rotatably connected to a cross pull rod (806). The cross pull rod (806) is slidably connected to the mounting frame (801).

6. The spring grinding machine for producing special-shaped springs according to claim 5, characterized in that: At one end of the mounting frame (801) relative to the support (802), there is a bottom support plate (807). At the bottom of one side of the bottom support plate (807), there is a grinding motor (808). A grinding belt (809) is rotatably arranged on the bottom support plate (807). The grinding belt (809) is rotatably connected to the grinding motor (808).

7. The spring grinding machine for producing special-shaped springs according to claim 5, wherein: A second rotating plate (810) is rotatably connected to the side of the installation frame (801). The top of the second rotating plate (810) is hinged to the other end of the horizontal pull rod (806). A first tapered wheel (811) is fixedly connected to the bottom of the second rotating plate (810). A second tapered wheel (812) is meshed with the side of the first tapered wheel (811). A third tapered wheel (813) is meshed with the side of the second tapered wheel (812) relative to the first tapered wheel (811). A reverse swing rod (814) is fixedly connected to the side of the third tapered wheel (813). The reverse swing rod (814) is movably clamped to the side of the bottom support rod.

8. The spring grinding machine for producing special-shaped springs according to claim 6, characterized in that: An axial center connecting rod (815) is fixedly connected to the top of the bottom support plate (807). The axial center connecting rod (815) is movably connected to the installation frame (801).

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