Lead frame fixing clamp

Abstract

The utility model discloses a lead frame fixing clamp, which relates to the technical field of integrated circuit lead frames and comprises a base, two clamping components are symmetrically mounted at the top of the base, two mounting blocks are symmetrically mounted at the bottom of the base, and a moving component is connected between the mounting blocks. The clamping assembly comprises a fixing seat slidably arranged at the top of the base, a fixing frame is installed at the top of the fixing seat, a push rod penetrates through an opening in one side of the fixing frame, and a spring is connected to one end of the fixing frame and one end of the push rod. The push rods push the push blocks at the front end to move forwards; the push blocks push the sliding blocks on the two sides to move up and down respectively; the sliding blocks drive the clamping blocks to move; the upper clamping block and the lower clamping block are separated; the clamping device is convenient to operate and adjust, and the clamping efficiency can be effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of integrated circuit lead frames, in particular to a lead frame fixing clamp. Background Art

[0002] Lead frame fixture is a fixture specially used to fix lead frame, mainly used in semiconductor packaging and electronic manufacturing fields. Lead frame is the basic material for semiconductor IC and device molded packaging, mainly composed of chip pads and pins, which plays the role of supporting chips, transmitting signals and heat dissipation. The main function of lead frame fixture is to firmly fix the lead frame on the fixture for subsequent assembly, welding, testing and other operations.

[0003] After searching, application number 202122254131.0 discloses a lead frame inspection fixture, including an adjustment block, a fixed rail and an adjustment bolt. The adjustment blocks are arranged at the four corners of the lead frame. The adjustment blocks are all L-shaped and have a receiving plate extending vertically at the bottom. The adjustment blocks are slidably arranged on the fixed rail. The fixed rail includes a transverse slide rail and a longitudinal slide rail. The adjustment bolt is screwed on the side wall of the adjustment block. There are multiple adjustment bolts and each adjustment block is provided with at least two adjustment bolts. The adjustment bolt includes longitudinal adjustment and transverse adjustment. Multiple inspection fixtures are integrated into an adjustable inspection fixture, reducing the time for replacing different inspection fixtures and the cost of producing different inspection fixtures, while also reducing the working space of the inspection fixture. After searching by the applicant, it was found that the use and operation of the utility model are too cumbersome, and the wrapping clamping is not convenient for subsequent other operations, and has great limitations. Therefore, in view of this, the existing structure and deficiencies are studied and improved, and a lead frame fixing fixture is proposed. Utility Model Content

[0004] The purpose of the utility model is to provide a lead frame fixing fixture to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a lead frame fixing fixture comprises a base, two clamping components are symmetrically installed on the top of the base, two mounting blocks are symmetrically installed on the bottom of the base, a moving component is connected between the mounting blocks, the clamping component comprises a fixed seat sliding on the top of the base, a fixed frame is installed on the top of the fixed seat, a push rod passes through an opening on one side of the fixed frame, a spring is connected to the fixed frame and one end of the push rod, a pushing block is connected to the other end of the push rod, sliders are connected to the oblique edges on both sides of the pushing block, and the oblique edges of the pushing block are in contact with the oblique surfaces of the slider to form a sliding connection, a protrusion is provided at one end of the slider and is slidably connected to the slide groove of the fixed frame, and a clamping block is fixedly connected to one side of the slider.

[0006] Preferably, the moving assembly includes a bidirectional screw rod rotatably connected between two mounting blocks, a rocker is provided on one side of the bidirectional screw rod, and moving blocks are threadedly connected on both sides of the bidirectional screw rod, and the moving block is connected to the bottom of the fixed seat.

[0007] Preferably, the fixing seat is installed between the fixing frame and the moving block, the three are fixedly connected by bolts, and the top protrusion of the moving block slides in the top opening of the base.

[0008] Preferably, the push block is provided with clamping blocks on both sides of the oblique edges, and the sliding block is provided with sliding grooves on the oblique edges, and the push block and the sliding block are slidably connected by using the clamping blocks and sliding grooves.

[0009] Preferably, a locking block is fixed at the opening of the slide slot of the slider using bolts, and the pushing block is fitted with the locking block.

[0010] Preferably, the clamping surface of the clamping block is provided with elastic blocks distributed in a matrix, and the elastic blocks are made of rubber material and have a hemispherical shape.

[0011] Preferably, a ruler is fixed on one side of the base.

[0012] Preferably, a dust cover is provided on the top of the base, and bumps are provided at the four corners of the bottom of the dust cover, and the bumps are inserted into the openings on the top of the base for fixation.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] 1. The utility model is provided with a clamping assembly, which pushes the push rods at both ends inward, and the push rods push the front push block to move forward, and the push block pushes the sliders on both sides to move up and down respectively, and the slider drives the clamping block to move, and the upper and lower clamping blocks are separated, and the lead frame is placed between the clamping blocks, and the push rod is released. The elastic force of the spring drives the push rod to return to its original position, and drives the clamping block to close to complete the clamping. The operation is convenient, and the adjustment is convenient, which can effectively improve the clamping efficiency.

[0015] 2. The utility model is provided with a moving component, which controls the rotation of the bidirectional screw rod by rotating the rocker to control the left and right movement of the moving blocks on both sides, and the moving blocks on both sides will move in opposite directions. The moving blocks drive the top fixed seat to move in the opening of the base, which can effectively control the distance between the clamping components on both sides, and is convenient for clamping lead frames of different sizes. Bolts are used to install the fixed frame and the moving block on the upper and lower parts of the fixed seat. The installation is firm and convenient for disassembly and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of a lead frame fixing fixture of the present invention;

[0017] Figure 2This is a front view of a lead frame fixing fixture in a clamping state according to the present invention;

[0018] Figure 3 This is a front view of a lead frame fixing fixture in an unclamped state according to the present invention;

[0019] Figure 4 This is a cross-sectional view of a lead frame fixing fixture in a clamping state according to the present invention;

[0020] Figure 5 This is a schematic diagram of a partial three-dimensional structure of a lead frame fixing fixture of the present invention;

[0021] Figure 6 This is a partial exploded diagram of a lead frame fixing fixture for this application.

[0022] In the figure: 1. base; 101. mounting block; 102. ruler; 103. dust cover; 2. clamping assembly; 201. fixing frame; 202. push rod; 203. spring; 204. pushing block; 205. slider; 206. clamping block; 2061. elastic block; 207. locking block; 208. fixing seat; 3. moving assembly; 301. rocker; 302. bidirectional screw; 303. moving block. DETAILED DESCRIPTION

[0023] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0024] like Figure 1-Figure 6 As shown, a lead frame fixing fixture includes a base 1, two clamping components 2 are symmetrically installed on the top of the base 1, two mounting blocks 101 are symmetrically installed on the bottom of the base 1, and a moving component 3 is connected between the mounting blocks 101. The clamping component 2 includes a fixed seat 208 sliding on the top of the base 1, a fixed frame 201 is installed on the top of the fixed seat 208, a push rod 202 passes through an opening on one side of the fixed frame 201, a spring 203 is connected to one end of the fixed frame 201 and the push rod 202, a push block 204 is connected to the other end of the push rod 202, sliders 205 are connected to the oblique edges on both sides of the push block 204, and the oblique edges of the push block 204 are in contact with the inclined surfaces of the slider 205 to form a sliding connection, a protrusion is provided at one end of the slider 205 and is slidably connected in the slide groove of the fixed frame 201, and a clamping block 206 is fixedly connected to one side of the slider 205.

[0025] As mentioned above, before clamping the lead frame, the fixing seats 208 on both sides are moved to appropriate positions according to the size of the lead frame, and the fixing seats 208 drive the fixing frame 201 to move. When the clamping operation is performed, the push rods 202 at both ends are pushed inward, and the push rods 202 push the front push block 204 to move forward. The push block 204 pushes the sliders 205 on both sides to move up and down respectively, and the sliders 205 drive the clamping block 206 to move. The upper and lower clamping blocks 206 are separated, and the lead frame is placed between the clamping blocks 206. The push rod 202 is released, and the elastic force of the spring 203 drives the push rod 202 to return to its original position, driving the clamping block 206 to close to complete the clamping.

[0026] The moving assembly 3 includes a bidirectional screw rod 302 rotatably connected between two mounting blocks 101, a rocker 301 is provided on one side of the bidirectional screw rod 302, and moving blocks 303 are threadedly connected on both sides of the bidirectional screw rod 302. The moving block 303 is connected to the bottom of the fixed seat 208, and the fixed seat 208 is installed between the fixed frame 201 and the moving block 303. The three are fixedly connected by bolts, and the top protrusion of the moving block 303 slides in the top opening of the base 1.

[0027] As mentioned above, by rotating the rocker 301 to control the rotation of the bidirectional screw rod 302, the moving blocks 303 on both sides are controlled to move left and right, and the moving blocks 303 on both sides will move in opposite directions. The moving blocks 303 drive the top fixed seat 208 to move in the opening of the base 1, which can effectively control the distance between the clamping components 2 on both sides, and facilitate the clamping of lead frames of different sizes within a certain range. Bolts are used to install the fixed frame 201 and the moving block 303 on the upper and lower sides of the fixed seat 208. The installation is firm and convenient for disassembly and maintenance.

[0028] The push block 204 is provided with a clamping block on the oblique sides, and the sliding groove is provided on the oblique side of the sliding block 205. The push block 204 and the sliding block 205 are slidably connected by using the clamping block and the sliding groove. The sliding groove opening of the sliding block 205 is fixed with a locking block 207 by bolts, and the push block 204 is fitted with the locking block 207. The clamping surface matrix of the clamping block 206 is provided with elastic blocks 2061. The elastic blocks 2061 are made of rubber and have a hemispherical shape.

[0029] As mentioned above, a card block is set on the side wall of the push block 204 to cooperate with the slide groove set on the oblique side of the slider 205 for sliding connection, thereby enhancing the stability of the device and ensuring the cooperation between the push block 204 and the slider 205 during operation. After the various components of the clamping assembly 2 are installed, a locking block 207 is installed on the side wall of the slider 205, which can effectively limit the push block 204 in the slideway of the slider 205 to prevent it from falling off during movement. The installation is simple and the stability is strong. When the clamping blocks 206 at both ends are clamped, the elastic blocks 2061 distributed on the clamping surface matrix prevent the clamping blocks 206 from crushing the lead frame, thereby improving the protection effect of the lead frame and increasing the clamping strength, and it will not fall off during clamping.

[0030] A ruler 102 is fixed on one side of the base 1 , a dust cover 103 is provided on the top of the base 1 , and bumps are provided at the four corners of the bottom of the dust cover 103 , and the bumps are inserted into the top opening of the base 1 for fixing.

[0031] As mentioned above, a ruler 102 is set on one side of the base 1, so that the distance between the clamping components 2 on both sides can be measured when clamping the lead frame, and control and adjustment can be performed to achieve the effect of precise clamping. A dust cover 103 is placed on the top of the base 1 and fixed to the base 1 with a bump. When the device is not in use, it can be placed to effectively prevent dust, increase the life of the equipment, and prevent the dust cover 103 from moving horizontally to cause equipment damage.

[0032] Working principle: before clamping the lead frame, rotate the rocker 301 to control the rotation of the bidirectional screw rod 302, control the movement of the moving blocks 303 on both sides, and the moving blocks 303 drive the top fixed seat 208 and the fixed frame 201 to move in the opening of the base 1. After moving to a suitable distance according to the size of the lead frame, the clamping operation is performed, and the push rods 202 at both ends are pushed inward. The push rods 202 push the front push block 204 to move forward, and the push blocks 204 push the sliders 205 on both sides to move up and down respectively. The sliders 205 drive the clamping blocks 206 to move, and the upper and lower clamping blocks 206 are separated. The lead frame is placed between the clamping blocks 206, and the push rod 202 is released. The elastic force of the spring 203 drives the push rod 202 to return to its original position, and drives the clamping blocks 206 to close to complete the clamping.

[0033] The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A lead frame fixing fixture, comprising a base (1), characterized in that: Two clamping components (2) are symmetrically mounted on the top of the base (1), two mounting blocks (101) are symmetrically mounted on the bottom of the base (1), and a moving component (3) is connected between the mounting blocks (101); The clamping assembly (2) comprises a fixed seat (208) sliding on the top of the base (1); a fixed frame (201) is installed on the top of the fixed seat (208); a push rod (202) passes through an opening on one side of the fixed frame (201); a spring (203) is connected between the fixed frame (201) and one end of the push rod (202); a push block (204) is connected to the other end of the push rod (202); sliders (205) are connected to the oblique edges on both sides of the push block (204); the oblique edges of the push block (204) and the oblique surfaces of the sliders (205) are in contact with each other to form a sliding connection; a protrusion is provided at one end of the slider (205) and is slidably connected in a slide groove of the fixed frame (201); and a clamping block (206) is fixedly connected to one side of the slider (205).

2. The lead frame fixing fixture according to claim 1, characterized in that: The moving assembly (3) comprises a bidirectional screw rod (302) rotatably connected between two mounting blocks (101), a rocker (301) is provided on one side of the bidirectional screw rod (302), and moving blocks (303) are threadedly connected on both sides of the bidirectional screw rod (302), and the moving block (303) is connected to the bottom of the fixed seat (208).

3. The lead frame fixing fixture according to claim 2, characterized in that: The fixing seat (208) is installed between the fixing frame (201) and the moving block (303), and the three are fixedly connected by bolts, and the top protrusion of the moving block (303) slides in the top opening of the base (1).

4. The lead frame fixing fixture according to claim 1, characterized in that: The push block (204) is provided with a clamping block on the oblique sides thereof, and the sliding block (205) is provided with a sliding groove on the oblique sides thereof. The push block (204) and the sliding block (205) are slidably connected by using the clamping block and the sliding groove to cooperate with each other.

5. The lead frame fixing fixture according to claim 4, characterized in that: A locking block (207) is fixed at the opening of the slide groove of the slider (205) by means of bolts, and the pushing block (204) is fitted with the locking block (207).

6. The lead frame fixing fixture according to claim 1, characterized in that: The clamping surface of the clamping block (206) is provided with elastic blocks (2061) distributed in a matrix. The elastic blocks (2061) are made of rubber material and have a hemispherical shape.

7. The lead frame fixing fixture according to claim 1, characterized in that: A ruler (102) is fixed to one side of the base (1).

8. The lead frame fixing fixture according to claim 1, characterized in that: A dust cover (103) is provided on the top of the base (1), and bumps are provided at the four corners of the bottom of the dust cover (103). The bumps are inserted into the top opening of the base (1) for fixation.

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