Fixing jig for thread cutting processing of ejector pin

Abstract

The utility model relates to the technical field of ejector pin jigs, in particular to an ejector pin thread cutting machining fixing jig which comprises a pressing plate of a base, a plurality of clamping grooves are formed in the top of the base, ejector pins are fixed between the base and the pressing plate through the clamping grooves, and a positioning piece and a locking piece used for positioning are arranged between the base and the pressing plate. The base and the pressing plate can be fastened through the locking piece, accurate positioning between the base and the pressing plate can be guaranteed through the effect of the positioning piece, and then it can be guaranteed that the ejector pin cannot deviate when fixed; and the locking piece can replace the mode that an air cylinder is adopted for clamping the ejector pin, the production cost of the ejector pin and the maintenance cost of the air cylinder can be reduced, time and labor are saved, the ejector pin clamping efficiency can be improved, the structure is simple, operation is easy and convenient, and practicability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of ejector fixtures, in particular to an ejector wire cutting processing fixing fixture. Background Art

[0002] A spark machine, also known as an EDM machine or a spark forming machine, is a device that uses the principle of electric spark discharge to perform metal processing. Its ejector pin is one of the key components connecting the high-voltage coil and the spark plug. The main function of the spark machine ejector pin is to transfer the high-voltage current to the center electrode of the spark plug, generating a spark to ignite and burn the mixed gas, thereby driving the normal operation of the automobile engine.

[0003] To facilitate the fixation of ejectors during wire cutting, a fixture for wire cutting is required. For example, prior art Chinese Patent Publication No. "CN104117912A" discloses an ejector fixture for fixing multiple ejectors. The fixture includes a base, multiple clamping members, a cylinder, and a positioning plate. The base is provided with a fixing portion, and the multiple clamping members are mounted on one side of the fixing portion. Clamping spaces for clamping the ejectors are provided between the fixing portion and the clamping member, and between two adjacent clamping members. The cylinder is used to squeeze the multiple clamping members to clamp the ejectors. The positioning plate is located on one side of the base and abuts against one end of the ejectors. Compared with prior art, this ejector fixture can simultaneously clamp multiple ejectors for processing, improving ejector processing efficiency.

[0004] Some ejector fixtures place the ejector on the base and then secure it by pushing the clamp with a cylinder. However, in actual operation, considering the method of using a cylinder to secure the ejector, the cylinder needs to be maintained after long-term use. This will lead to higher production costs for the ejector and higher maintenance costs for the fixture, and poor practicality. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings of the prior art in that the production cost of the ejector and the maintenance cost of the fixture are relatively high, and to propose a fixing fixture for wire cutting of the ejector.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A fixing fixture for wire cutting processing of an ejector pin is designed, which includes a pressure plate of a base. Several slots are opened on the top of the base, and an ejector pin is fixed between the slots and the pressure plate. A positioning piece and a locking piece for positioning are provided between the base and the pressure plate, and the base and the pressure plate can be fastened by the locking piece.

[0008] Furthermore, the positioning member includes a positioning column fixedly installed at the corner of the bottom of the pressure plate, and a positioning groove corresponding to the positioning column is opened on the top of the base, and the positioning column can be inserted into the positioning groove.

[0009] Furthermore, the locking member includes a pair of fixing rods fixedly installed on the side of the pressure plate, one end of the fixing rod is provided with a bent clamping portion, and a pair of clamping seats are fixedly installed on the side of the base, and the fixing rods are slidably connected to the clamping seats.

[0010] Furthermore, a first slide groove and a second slide groove are longitudinally opened in the card seat, and a third slide groove is transversely opened on the sides of the first slide groove and the second slide groove. The fixing rod is slidably connected in the first slide groove, and the unlocking part and the fixing part are slidably connected in the second slide groove and the third slide groove respectively.

[0011] Furthermore, a through groove corresponding to the second slide groove is provided in the fixed part, and a first guide slope and a second guide slope are provided on both sides. The clamping part slides in contact with the first guide slope and can be clamped by the fixed part. A spring is fixedly connected between the inner side surface of the third slide groove and the side surface of the fixed part.

[0012] Furthermore, the top of the unlocking portion is slidably connected to the through groove, and the top of the unlocking portion can be pressed tightly by the second guiding inclined surface, and the bottoms of a pair of unlocking portions are connected to form a pressing portion.

[0013] The advantageous effects of the fixing fixture for wire cutting processing of an ejector pin proposed by the utility model are as follows: the utility model can ensure accurate positioning between the base and the pressure plate through the action of the positioning member, thereby ensuring that the ejector pin will not deviate when being fixed, and the locking member can replace the method of clamping the ejector pin with a cylinder, which not only reduces the production cost of the ejector pin and the maintenance cost of the cylinder, but also saves time and effort and is conducive to improving the clamping efficiency of the ejector pin, and has a simple structure, easy operation and strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of the utility model;

[0015] Figure 2 This is a structural diagram of the positioning column of the utility model;

[0016] Figure 3 for Figure 2 Schematic diagram of the enlarged structure of area A;

[0017] Figure 4 This is a schematic structural diagram of the locking member of the utility model.

[0018] In the figure: 1. base; 2. pressure plate; 3. slot; 4. ejector pin; 5. positioning member; 51. positioning column; 52. positioning slot; 6. locking member; 61. fixing rod; 62. clamping portion; 63. holder; 64. first slide slot; 65. second slide slot; 66. third slide slot; 67. unlocking portion; 671. pressing portion; 68. fixing portion; 681. through slot; 682. first guide slope; 683. second guide slope; 69. spring. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] Reference Figure 1-4 The thimble wire cutting processing fixing fixture includes a base 1 and a pressure plate 2. A plurality of slots 3 are opened on the top of the base 1, and a thimble 4 is fixed between the slots 3 and the pressure plate 2. A positioning member 5 and a locking member 6 for positioning are provided between the base 1 and the pressure plate 2. The locking member 6 can be used to fasten the base 1 and the pressure plate 2.

[0021] It should be supplemented that the card slot 3 is a V-shaped structure, and a non-slip pad is provided at the bottom of the pressure plate 2. The card slot 3 is used to accommodate the ejector pin 4, and the ejector pin 4 is clamped by fixing the base 1 and the pressure plate 2.

[0022] Furthermore, the positioning member 5 includes a positioning column 51 fixedly installed at the corner of the bottom of the pressure plate 2, and a positioning groove 52 corresponding to the positioning column 51 is provided on the top of the base 1, and the positioning column 51 can be inserted into the positioning groove 52.

[0023] Furthermore, the locking member 6 includes a pair of fixing rods 61 fixedly installed on the side of the pressure plate 2, one end of the fixing rod 61 is provided with a bent clamping portion 62, and a pair of clamping seats 63 are fixedly installed on the side of the base 1, and the fixing rods 61 are slidably connected to the clamping seats 63.

[0024] In more detail, a first slide groove 64 and a second slide groove 65 are longitudinally opened in the base 63, and a third slide groove 66 is transversely opened on the sides of the first slide groove 64 and the second slide groove 65. The fixing rod 61 is slidably connected in the first slide groove 64, and the unlocking part 67 and the fixing part 68 are slidably connected in the second slide groove 65 and the third slide groove 66 respectively.

[0025] It is worth mentioning that one end of the third slide groove 66 is connected to the first slide groove 64 and the second slide groove 65 to form a Chinese-character structure, wherein the fixing portion 68 is slidably connected to the third slide groove 66, and the through groove 681 is flush with the first slide groove 64 and the second slide groove 65 to prevent the fixing rod 61 and the unlocking portion 67 from being stuck.

[0026] In general, a through groove 681 corresponding to the second slide groove 65 is provided in the fixing portion 68, and a first guide slope 682 and a second guide slope 683 are provided on both sides. The clamping portion 62 slides in contact with the first guide slope 682 and can be clamped by the fixing portion 68. A spring 69 is fixedly connected between the inner side surface of the third slide groove 66 and the side surface of the fixing portion 68.

[0027] In actual operation, the fixing portion 68, under the elastic support of the spring 69, uses one end provided with the first guiding inclined surface 682 to clamp the clamping portion 62, thereby achieving the purpose of fastening the base 1 and the pressure plate 2;

[0028] Furthermore, because the unlocking portion 67 slides against the second guiding inclined surface 683 , the top of the unlocking portion 67 is affected by the interference and is located above the fixing portion 68 .

[0029] Finally, the top of the unlocking portion 67 is slidably connected to the through groove 681 , and the top thereof can be pressed tightly by the second guiding slope 683 . The bottoms of a pair of unlocking portions 67 are connected to form a pressing portion 671 .

[0030] The specific operation is to press the pressing part 671 to move the pair of unlocking parts 67 downward, and then the unlocking part 67 contacts the second guide slope 683 to move the fixing part 68, and the fixing part 68 will disengage from the clamping part 62 while moving, and then the pressure plate 2 can be unlocked.

[0031] Working method: When working, the card slot 3 is used to accommodate the ejector pin 4, and then the positioning column 51 of the pressure plate 2 is inserted into the positioning groove 52 at the top of the base 1, so that the pressure plate 2 cooperates with the base 1 to pre-fix the ejector pin 4;

[0032] While the pressing plate 2 and the base 1 are positioned, the fixing rod 61 slides along the first sliding groove 64 to make the clamping portion 62 slide and clamp with the fixing portion 68, and the fixing portion 68 fixes the clamping portion 62 under the elastic support of the spring 69, thereby achieving the effect of fastening the base 1 and the pressing plate 2;

[0033] Finally, pressing the pressing portion 671 moves the unlocking portion 67 downward, and then contacts the second guiding slope 683 to move the fixing portion 68. The fixing portion 68 will disengage from the engaging portion 62 while moving, thereby unlocking the pressing plate 2.

[0034] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A fixture for thread cutting processing of an ejector needle, comprising a pressing plate (2) of a base (1), characterized in that: A plurality of slots (3) are provided on the top of the base (1), and a pin (4) is fixed between the slots (3) and the pressing plate (2). A positioning member (5) and a locking member (6) for positioning are provided between the base (1) and the pressing plate (2), and the locking member (6) can be used to fasten the base (1) and the pressing plate (2).

2. The fixing fixture for thread cutting according to claim 1, characterized in that: The positioning member (5) comprises a positioning column (51) fixedly installed at the corner of the bottom of the pressure plate (2); a positioning groove (52) corresponding to the positioning column (51) is provided on the top of the base (1); and the positioning column (51) can be inserted into the positioning groove (52).

3. The fixing fixture for ejector wire cutting according to claim 1, characterized in that: The locking member (6) comprises a pair of fixing rods (61) fixedly mounted on the side of the pressure plate (2), one end of the fixing rod (61) is provided with a bent clamping portion (62), and a pair of clamping seats (63) are fixedly mounted on the side of the base (1), and the fixing rods (61) are slidably connected to the clamping seats (63).

4. The fixing fixture for ejector wire cutting according to claim 3 is characterized in that: A first slide groove (64) and a second slide groove (65) are longitudinally provided in the holder (63), and a third slide groove (66) is transversely provided on the sides of the first slide groove (64) and the second slide groove (65); the fixing rod (61) is slidably connected in the first slide groove (64), and an unlocking portion (67) and a fixing portion (68) are slidably connected in the second slide groove (65) and the third slide groove (66), respectively.

5. The fixing fixture for ejector wire cutting according to claim 4, characterized in that: The fixing portion (68) is provided with a through groove (681) corresponding to the second slide groove (65), and is provided with a first guiding inclined surface (682) and a second guiding inclined surface (683) on both sides. The clamping portion (62) slides against the first guiding inclined surface (682) and can be clamped by the fixing portion (68). A spring (69) is fixedly connected between the inner side surface of the third slide groove (66) and the side surface of the fixing portion (68).

6. The fixing fixture for ejector wire cutting according to claim 5, characterized in that: The top of the unlocking portion (67) is slidably connected in the through groove (681), and its top can be pressed against by the second guiding inclined surface (683); a pair of bottoms of the unlocking portion (67) are connected to form a pressing portion (671).

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