Stamping tool for valve rod assembly

Abstract

The utility model provides a stamping device for a valve rod assembly, which comprises a rack, a valve rod positioning module, a stamping die set and a stamping die set, wherein the valve rod positioning module penetrates through the center of the bottom of the rack; the mold closing diaphragm bowl positioning module is arranged right above the valve rod positioning module, and one side of the mold closing diaphragm bowl positioning module is connected with the rack; the die assembly driving module is arranged on the side, away from the die assembly diaphragm bowl positioning module, of the machine frame in a penetrating mode, and when the punching tool of the valve rod adjusting assembly is used, a valve rod positioning column and a punch in a punching machine need to be adjusted to be coaxial through meter reading of a dial indicator, and a diaphragm bowl penetrates through the bottom of a valve rod; a diaphragm bowl is moved to the top of a valve rod, a diaphragm on the top of the valve rod is clamped in the diaphragm bowl, the valve rod is inserted into a through hole in the center of a valve rod positioning column, and the outer contour of one side of the diaphragm bowl makes contact with a diaphragm bowl limiting semicircular groove; and the driving cylinder is started to drive the cylinder arm to enable the pressing block to move towards the positioning block, so that the wall of the diaphragm bowl positioning semicircular groove is in contact with the outer contour of the other side of the diaphragm bowl.

Description

Technical Field

[0001] The utility model relates to the field of valve stem assembly processing, in particular to the technical field of valve stem assembly stamping assembly, and specifically to a stamping fixture for the valve stem assembly. Background Art

[0002] The existing valve stem assembly consists of an integrated valve stem, diaphragm and diaphragm bowl. The diaphragm bowl is inserted from the bottom of the valve stem, and the diaphragm bowl is moved to the top of the valve stem to clamp the diaphragm on the top of the valve stem in the diaphragm bowl. The diaphragm bowl and the diaphragm are formed into an interference fit through stamping. However, if a bench vise is used for clamping during the stamping process, calibration is required each time the stamping is performed so that the top of the punch in the stamping machine is accurately aligned with the center of the diaphragm bowl. Otherwise, overshoot will occur, causing the diaphragm bowl to deform and the diaphragm to be damaged, resulting in the scrapping of the parts. Summary of the Invention

[0003] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a stamping fixture for a valve stem assembly to solve the difficulties of the prior art.

[0004] To achieve the above-mentioned and other related purposes, the present invention provides a stamping fixture for a valve stem assembly, comprising:

[0005] frame;

[0006] A valve stem positioning module, which is arranged in the center of the bottom of the frame;

[0007] A mold closing diaphragm bowl positioning module, which is arranged directly above the valve stem positioning module, and one side of the mold closing diaphragm bowl positioning module is connected to the frame;

[0008] The mold closing drive module is arranged on a side of the frame away from the mold closing diaphragm bowl positioning module.

[0009] According to a preferred embodiment, the frame includes a base, a left parallel end, and a right parallel end, wherein the left parallel end and the right parallel end are arranged on the left and right sides of the top of the base.

[0010] According to a preferred embodiment, the left parallel end and the right parallel end have the same height.

[0011] According to the preferred embodiment, the valve stem positioning module includes:

[0012] A positioning screw hole is provided in the center of the top of the base;

[0013] A screw rod is inserted into a positioning screw hole, and a valve stem positioning column 23 is provided on the top of the screw rod through a threaded connection. A through hole is opened in the center of the valve stem positioning column, the top of the through hole is a smooth hole, and the bottom of the through hole is sleeved outside the screw rod, and the bottom of the through hole is a threaded hole;

[0014] A pair of hexagonal nuts are provided, and the pair of hexagonal nuts are sleeved on the screw rod, and the pair of hexagonal nuts are in contact with the bottom end of the valve stem positioning column and the top end of the base respectively.

[0015] According to a preferred solution, the valve stem positioning column is coaxially arranged with the through hole.

[0016] According to the preferred embodiment, the mold closing diaphragm bowl positioning module includes:

[0017] A positioning block is provided on a side of the right parallel end close to the screw;

[0018] A thin flat key slot is provided on both the front and rear sides of the positioning block;

[0019] The diaphragm bowl limits the semicircular groove, which is penetrated at the top of the positioning block, and the bottom of the diaphragm bowl limits the semicircular groove passes through the thin flat key slot and extends downward to the positioning block, and the center line of the diaphragm bowl limits the semicircular groove coincides with the extension line of the central axis of the screw 22.

[0020] According to a preferred embodiment, the positioning block, the base, the left parallel end and the right parallel end are integrally arranged.

[0021] According to the preferred embodiment, the mold clamping drive module includes:

[0022] A driving cylinder is provided on a side of the left parallel end away from the screw rod through a bolt connection, a cylinder arm is provided through the middle of the driving cylinder, and a top of the cylinder arm extends through the left parallel end toward the screw rod;

[0023] A pressing block, which is mounted on the top of the cylinder arm by welding;

[0024] Square grooves, which are provided on the front and rear sides of the pressing block;

[0025] The diaphragm bowl positioning semicircular groove is provided on the top of the pressing block, the bottom of the diaphragm bowl positioning semicircular groove passes through the square groove and extends to the bottom of the pressing block, and the inner diameter of the diaphragm bowl positioning semicircular groove is the same as the inner diameter of the diaphragm bowl limiting semicircular groove;

[0026] A positioning hole is provided at the top of the pressing block, and the bottom of the positioning hole is connected to the square groove;

[0027] A keyway card block, wherein the bottom of the keyway card block is interference-fitted in the square slot, the top of the keyway card block is arc-shaped, and a clearance groove is provided in the middle of the top of the keyway card block;

[0028] A positioning screw is passed through the positioning hole, and the bottom of the positioning screw is against the bottom of the keyway block.

[0029] According to a preferred embodiment, the pressing block and the positioning block have the same height.

[0030] According to the preferred embodiment, the width of the square groove is connected to the maximum width of the thin flat key groove.

[0031] According to a preferred embodiment, the length of the keyway block is the same as the length of the square slot and the length of the thin flat keyway.

[0032] The utility model adopts a machine frame, a valve stem positioning module, a mold closing diaphragm bowl positioning module and a mold closing drive module. When the stamping fixture for adjusting the valve stem assembly is used, the valve stem positioning column and the punch in the stamping machine need to be adjusted to be coaxial by using a dial indicator, the diaphragm bowl is inserted from the bottom of the valve stem, the diaphragm bowl is moved to the top of the valve stem, the diaphragm on the top of the valve stem is clamped in the diaphragm bowl, the valve stem is inserted into the through hole in the center of the valve stem positioning column, the outer contour of one side of the diaphragm bowl is brought into contact with the diaphragm bowl limiting semicircular groove, the driving cylinder is started to drive the cylinder arm to move the pressure block toward the positioning block so that the wall of the diaphragm bowl positioning semicircular groove is brought into contact with the outer contour of the other side of the diaphragm bowl, and the stamping machine is started to complete the processing; the following beneficial effects are achieved:

[0033] (1) There is no need to calibrate the coaxiality of the punch and the diaphragm bowl each time the stamping assembly is performed.

[0034] The following will describe in more detail the best embodiments of the present invention in conjunction with the accompanying drawings so that the features and advantages of the present invention can be easily understood. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 Shown is a schematic diagram of the three-dimensional structure of the utility model;

[0036] Figure 2 Shown is an enlarged schematic diagram of the three-dimensional structure of the keyway block in the present invention;

[0037] Figure 3 Shown is an enlarged schematic diagram of the three-dimensional structure of the pressing block in the present invention;

[0038] Figure 4 Shown is an enlarged schematic diagram of the three-dimensional structure of the valve stem positioning module in the present invention;

[0039] Figure 5 Shown is an enlarged schematic diagram of the three-dimensional structure of the frame and the mold clamping diaphragm bowl positioning module in the present invention;

[0040] Figure 6 Shown is a three-dimensional schematic diagram of the valve stem assembly required for press-fitting in the present invention;

[0041] Label Description

[0042] 1. Frame; 11. Base; 12. Left parallel end; 13. Right parallel end;

[0043] 2. Valve stem positioning module; 21. Positioning screw hole; 22. Screw; 23. Valve stem positioning column; 24. Through hole; 25. Hexagonal nut;

[0044] 3. Mold closing diaphragm bowl positioning module; 31. Positioning block; 32. Thin flat keyway; 33. Diaphragm bowl limiting semicircular groove;

[0045] 4. Mold clamping drive module; 41. Drive cylinder; 42. Cylinder arm; 43. Pressure block; 44. Square groove; 45. Diaphragm bowl positioning semicircular groove; 46. Positioning hole; 47. Keyway block; 48. Positioning screw; 49. Clearance groove; DETAILED DESCRIPTION

[0046] In order to make the purpose, technical solution and advantages of the technical solution of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings of the specific embodiments of the present invention. The same figure marks in the drawings represent the same parts. It should be noted that the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0047] Compared to the embodiments shown in the drawings, feasible embodiments within the scope of protection of the present invention may have fewer components, other components not shown in the drawings, different components, differently arranged components, or differently connected components, etc. In addition, two or more components in the drawings may be implemented in a single component, or a single component shown in the drawings may be implemented as multiple separate components.

[0048] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning understood by persons of ordinary skill in the field to which the present invention belongs. The words "first", "second" and similar terms used in the specification and claims of the present utility model patent application do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "a" or "an" do not necessarily indicate a quantity limitation. Words such as "include" or "comprising" mean that the elements or objects preceding the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0049] The present invention proposes a stamping fixture for a valve stem assembly, which is used in the valve stem assembly processing technology. The present invention does not limit the type of valve stem assembly, but the structure of the frame 1, valve stem positioning module 2, mold closing diaphragm bowl positioning module 3 and mold closing drive module 4 is particularly suitable for the stamping assembly of the valve stem assembly.

[0050] In general, the stamping fixture of the valve stem assembly proposed in the present invention mainly includes: a frame 1, a valve stem positioning module 2, a mold diaphragm bowl positioning module 3 and a mold driving module 4. Figure 1 , which shows the layout relationship of the frame 1, the valve stem positioning module 2, the mold closing diaphragm bowl positioning module 3 and the mold closing drive module 4.

[0051] When using the stamping fixture of the valve stem assembly proposed by the present invention, it is necessary to adjust the valve stem positioning column 23 and the punch in the punching machine to be coaxial through the micrometer, insert the diaphragm bowl from the bottom of the valve stem, move the diaphragm bowl to the top of the valve stem, and clamp the diaphragm at the top of the valve stem in the diaphragm bowl. Insert the valve stem into the through hole 24 in the center of the valve stem positioning column 23, and make the outer contour of one side of the diaphragm bowl contact with the diaphragm bowl limiting semicircular groove 33. Start the driving cylinder 41 to drive the cylinder arm 42 to move the pressure block 43 toward the positioning block 31 so that the groove wall of the diaphragm bowl positioning semicircular groove 45 contacts the outer contour of the other side of the diaphragm bowl. Start the punching machine to complete the processing.

[0052] The frame 1 includes a base 11, a left parallel end 12 and a right parallel end 13. The left parallel end 12 and the right parallel end 13 are arranged on the left and right sides of the top of the base 11. The left parallel end 12 and the right parallel end 13 have the same height.

[0053] The above-mentioned valve stem positioning module 2 is arranged in the middle of the bottom of the frame 1, and the valve stem positioning module 2 includes: a positioning screw hole 21, a screw 22, a valve stem positioning column 23, a through hole 24 and a hexagonal nut 25, wherein the positioning screw hole 21 is opened in the middle of the top of the base 11, and a screw 22 is passed through the positioning screw hole 21. A valve stem positioning column 23 is provided on the top of the screw 22 through a threaded connection, and a through hole 24 is opened in the middle of the valve stem positioning column 23. The valve stem positioning column 23 is coaxially arranged with the through hole 24, the top of the through hole 24 is a smooth hole, and the bottom of the through hole 24 is a threaded hole. The bottom of the through hole 24 is sleeved on the outside of the screw 22, and a pair of hexagonal nuts 25 are provided. A pair of hexagonal nuts 25 are sleeved on the screw 22, and a pair of hexagonal nuts 25 are respectively in contact with the bottom end of the valve stem positioning column 23 and the top of the base 11, and the hexagonal nuts 25 improve the strength of the screw 22.

[0054] The above-mentioned mold closing diaphragm bowl positioning module 3 is arranged directly above the valve stem positioning module 2, and one side of the mold closing diaphragm bowl positioning module 3 is connected to the frame 1, and the mold closing diaphragm bowl positioning module 3 includes: a positioning block 31, a thin flat key keyway 32 and a diaphragm bowl limiting semicircular groove 33, wherein the positioning block 31 is arranged on the side of the right parallel end 13 close to the screw 22, and a thin flat key keyway 32 is provided on the front and back sides of the positioning block 31, and a diaphragm bowl limiting semicircular groove 33 is provided on the top of the positioning block 31, and the bottom of the diaphragm bowl limiting semicircular groove 33 passes through the thin flat key keyway 32 and extends to the bottom of the positioning block 31, and the center line of the diaphragm bowl limiting semicircular groove 33 coincides with the extension line of the central axis of the screw 22.

[0055] It should also be noted that the positioning block 31 , the base 11 , the left parallel end 12 and the right parallel end 13 are integrally arranged, and the overall strength of the frame 1 is relatively high.

[0056] The above-mentioned mold closing drive module 4 is arranged on the side of the frame 1 away from the mold closing diaphragm bowl positioning module 3, and the mold closing drive module 4 includes: a driving cylinder 41, a pressure block 43, a square groove 44, a diaphragm bowl positioning semicircular groove 45, a positioning hole 46 and a keyway block 47, wherein the driving cylinder 41 is arranged on the side of the left parallel end 12 away from the screw 22 through a bolt connection, and a cylinder arm 42 is passed through the middle of the driving cylinder 41, and the top of the cylinder arm 42 passes through the left parallel end 12 and extends in the direction of the screw 22, and a pressure block 43 is provided at the top of the cylinder arm 42 by welding, and square grooves 44 are opened on the front and back sides of the pressure block 43, the diaphragm bowl positioning semicircular groove 45 is passed through the top of the pressure block 43, and the bottom of the diaphragm bowl positioning semicircular groove 45 passes through the square groove 44 to the bottom of the pressure block 43 The bottom of the diaphragm bowl positioning semicircular groove 45 passes through the square groove 44 and extends to the bottom of the pressure block 43. A positioning hole 46 is provided at the top of the pressure block 43. The bottom of the positioning hole 46 is communicated with the square groove 44. The bottom of the keyway block 47 is interference fit in the square groove 44. The top of the keyway block 47 is arc-shaped. A yield groove 49 is provided in the middle of the top of the keyway block 47 to prevent the keyway block 47 from tilting the valve stem positioning column 23. The positioning screw 48 is passed through the positioning hole 46, and the bottom of the positioning screw 48 is against the bottom of the keyway block 47 to prevent the keyway block 47 from shifting when the driving cylinder 41 drives the keyway block 47 in and out of the thin flat keyway 32.

[0057] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical principles disclosed in the present invention are intended to be covered by the claims of the present invention.

Claims

1. A stamping fixture for a valve stem assembly, characterized in that: include: Rack (1); A valve stem positioning module (2), wherein the valve stem positioning module (2) is arranged in the center of the bottom of the frame (1); A mold closing diaphragm bowl positioning module (3), wherein the mold closing diaphragm bowl positioning module (3) is arranged directly above the valve stem positioning module (2), and one side of the mold closing diaphragm bowl positioning module (3) is connected to the frame (1); A mold closing drive module (4) is provided on a side of the frame (1) away from the mold closing diaphragm bowl positioning module (3).

2. The stamping fixture for the valve stem assembly according to claim 1, characterized in that: The frame (1) comprises a base (11), a left parallel end (12) and a right parallel end (13), wherein the left parallel end (12) and the right parallel end (13) are arranged on the left and right sides of the top of the base (11).

3. The stamping fixture for the valve stem assembly according to claim 2, characterized in that: The valve stem positioning module (2) comprises: A positioning screw hole (21), wherein the positioning screw hole (21) is provided in the center of the top end of the base (11); A screw rod (22), the screw rod (22) is inserted into the positioning screw hole (21), a valve stem positioning column (23) is provided at the top of the screw rod (22) through a threaded connection, a through hole (24) is provided in the center of the valve stem positioning column (23), the top of the through hole (24) is a smooth hole, the bottom of the through hole (24) is sleeved outside the screw rod (22), and the bottom of the through hole (24) is a threaded hole; A pair of hexagonal nuts (25) are provided, wherein the pair of hexagonal nuts (25) are sleeved on the screw rod (22), and the pair of hexagonal nuts (25) are in contact with the bottom end of the valve stem positioning column (23) and the top end of the base (11) respectively.

4. The stamping fixture for the valve stem assembly according to claim 3, characterized in that: The mold closing diaphragm bowl positioning module (3) comprises: A positioning block (31), the positioning block (31) being arranged on a side of the right parallel end (13) close to the screw (22); A thin flat key slot (32), wherein the thin flat key slot (32) is provided on both the front and rear sides of the positioning block (31); The diaphragm bowl limiting semicircular groove (33) is provided on the top of the positioning block (31), and the bottom of the diaphragm bowl limiting semicircular groove (33) passes through the thin flat key groove (32) and extends downward to the positioning block (31), and the center line of the diaphragm bowl limiting semicircular groove (33) coincides with the extension line of the central axis of the screw (22).

5. The stamping fixture for the valve stem assembly according to claim 4, characterized in that: The positioning block (31), the base (11), the left parallel end (12) and the right parallel end (13) are integrally arranged.

6. The stamping fixture for the valve stem assembly according to claim 5, characterized in that: The mold clamping drive module (4) comprises: A driving cylinder (41) is provided on a side of the left parallel end (12) away from the screw rod (22) through a bolt connection, a cylinder arm (42) is provided in the middle of the driving cylinder (41), and a top of the cylinder arm (42) passes through the left parallel end (12) and extends in the direction of the screw rod (22); A pressing block (43), wherein the pressing block (43) is arranged on the top end of the cylinder arm (42) by welding; A square groove (44), the square groove (44) is provided on both the front and rear sides of the pressing block (43); The diaphragm bowl positioning semicircular groove (45) is provided on the top of the pressing block (43), the bottom of the diaphragm bowl positioning semicircular groove (45) passes through the square groove (44) and extends downward to the pressing block (43), and the inner diameter of the diaphragm bowl positioning semicircular groove (45) is the same as the inner diameter of the diaphragm bowl limiting semicircular groove (33); A positioning hole (46), the positioning hole (46) is opened at the top of the pressing block (43), and the bottom of the positioning hole (46) is communicated with the square groove (44); A keyway card block (47), wherein the bottom of the keyway card block (47) is interference-fitted in the square groove (44), the top of the keyway card block (47) is arc-shaped, and a clearance groove (49) is provided in the middle of the top of the keyway card block (47); A positioning screw (48) is inserted into the positioning hole (46), and the bottom of the positioning screw (48) is pressed against the bottom of the keyway block (47).

Images