A pinch roll limiting mechanism for lead frame processing

Abstract

The utility model discloses a kind of pinch roll limiting mechanisms for wire frame processing, belong to metal processing pinch roll limiting technical field, including roller stand;Upper bearing fixed block, the inner side of upper bearing fixed block is rotatably provided with upper pinch roll, the left and right ends of upper bearing fixed block are respectively set left limit block and right limit block and roller stand is connected, the lower part of upper bearing fixed block is equipped with upper limit block;The combination of the present device is set upper limit block, lower limit block, left limit block, right limit block and outer fixed frame, realize the multidimensional stable limiting of pinch roll in up and down, left and right and front and back direction.

Description

Technical Field

[0001] This utility model belongs to the field of metal processing technology, and in particular to a clamping roller limiting mechanism for wire frame processing. Background Technology

[0002] With the rapid development of the electronic packaging industry, leadframes are increasingly widely used in semiconductor devices, especially in high-power packaged devices. Leadframes not only provide electrical connections but also serve multiple functions such as heat conduction and support. Leadframes are typically made of highly conductive and ductile copper or alloy strips, processed through stamping, etching, and plating. To ensure dimensional accuracy and surface quality, the metal strip is usually continuously conveyed and positioned by a pair of upper and lower clamping rollers during production.

[0003] However, in existing wire guide frame processing equipment, the gap between the upper and lower clamping rollers is mostly adjusted manually. Due to the inherent experience errors in manual adjustment, a gap that is too small can easily cause the profiles to be crushed and deformed or develop surface scratches, while a gap that is too large can lead to instability in the conveying process, resulting in slippage or misalignment. With prolonged operation, the clamping rollers and their bearings are also prone to wear, misalignment, and loosening, leading to decreased equipment operating accuracy, increased maintenance frequency, and even affecting product quality. Therefore, there is an urgent need for a clamping roller mechanism capable of achieving multi-dimensional precise positioning in the vertical and horizontal directions to improve equipment operating stability and wire guide frame processing accuracy. Utility Model Content

[0004] The purpose of this utility model is to provide a clamping roller limiting mechanism for wire guide frame processing, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a clamping roller limiting mechanism for wire guide frame processing, comprising a roller frame; an upper bearing fixing block, wherein an upper clamping roller is rotatably disposed on the inner side of the upper bearing fixing block, and a left limiting block and a right limiting block are respectively disposed at the left and right ends of the upper bearing fixing block and connected to the roller frame, and an upper limiting block is disposed at the lower part of the upper bearing fixing block; and a lower bearing fixing block, wherein a lower clamping roller is rotatably disposed on the inner side of the lower bearing fixing block, and a left limiting block and a right limiting block are respectively disposed at the left and right ends of the lower bearing fixing block and connected to the roller frame, and a lower limiting block is disposed at the upper part of the lower bearing fixing block, and the lower limiting block and the upper limiting block are fixedly connected.

[0006] Furthermore, the outer side of the roller frame is provided with an outer fixing frame, and the inner side is provided with multiple inner fixing rods.

[0007] Furthermore, the outer fixing frame includes an upper fixing rod and a lower fixing rod. The left and right ends of the upper fixing rod are fixedly connected to the roller frame, and the inner side of the upper fixing rod is fixed to the upper bearing fixing block. The left and right ends of the lower fixing rod are fixedly connected to the roller frame, and the inner side of the lower fixing rod is fixed to the lower bearing fixing block.

[0008] Furthermore, a connecting rod is provided between the upper fixing rod and the lower fixing rod.

[0009] Compared with the prior art, the technical effects and advantages of this utility model are as follows: This clamping roller limiting mechanism for wire guide frame processing achieves multi-dimensional stable limiting of the clamping roller in the up-down, left-right, and front-back directions by setting an upper limit block, lower limit block, left limit block, right limit block and outer fixed frame. This significantly improves positioning accuracy and operational stability, greatly extends equipment life and reduces the frequency of manual adjustment and maintenance. Attached Figure Description

[0010] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0011] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the structure of the external fixing frame in this utility model.

[0012] in: 1. Roller frame; 2. Upper pinch roller; 3. Lower pinch roller; 4. Upper bearing fixing block; 5. Lower bearing fixing block; 6. Upper limit block; 7. Lower limit block; 8. Left limit block; 9. Right limit block; 10. Outer fixing frame; 11. Inner fixing rod; 101. Upper fixing rod; 102. Lower fixing rod; 103. Connecting rod. Detailed Implementation

[0013] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid confusion with the present invention.

[0014] Unless otherwise defined, the directions mentioned herein, such as up, down, left, right, front, back, inside, and outside, are based on the directions shown in the figures of this utility model, and are explained here together.

[0015] The connection method can be any existing method, such as bonding, welding, or bolting, depending on the actual needs.

[0016] Please see Figure 1 and Figure 2 The structure of the device body is as follows: a clamping roller limiting mechanism for wire frame processing, including roller frame 1, upper bearing fixing block 4, lower bearing fixing block 5, upper clamping roller 2, lower clamping roller 3, upper limit block 6, lower limit block 7, left and right limit blocks 9 and outer fixing frame 10.

[0017] In terms of specific structure, the roller frame 1 is an integral frame structure used to support and fix the entire pinch roller system. The upper bearing fixing block 4 is installed at the upper part of the roller frame 1, and the upper pinch roller 2 is rotatably mounted on its inner side via rolling bearings. A left limiting block 8 and a right limiting block 9 are respectively installed at the left and right ends of the upper bearing fixing block 4. Both the left and right limiting blocks 8 and 9 are fixedly connected to the roller frame 1 to prevent the upper pinch roller 2 from moving horizontally. An upper limiting block 6 is provided at the lower part of the upper bearing fixing block 4 to limit the vertical displacement of the upper pinch roller 2.

[0018] The lower bearing fixing block 5 is installed at the lower part of the roller frame 1, and the lower pinch roller 3 is rotatably mounted on its inner side by a rolling bearing. The left and right ends of the lower bearing fixing block 5 are also provided with a left limiting block 8 and a right limiting block 9, which are fixedly connected to the roller frame 1, thus forming a symmetrical limiting structure with the upper bearing fixing block 4. A lower limiting block 7 is provided at the upper part of the lower bearing fixing block 5, and the lower limiting block 7 is fixedly connected to the upper limiting block 6, thereby forming a stable positioning fit between the upper pinch roller 2 and the lower pinch roller 3 in the vertical direction, ensuring that the gap between the two rollers remains constant.

[0019] An outer fixing frame 10 is provided on the outside of the roller frame 1. The outer fixing frame 10 includes an upper fixing rod 101 and a lower fixing rod 102. The left and right ends of the upper fixing rod 101 are fixedly connected to the roller frame 1, and its inner side is fixed to the upper bearing fixing block 4. The left and right ends of the lower fixing rod 102 are fixedly connected to the roller frame 1, and its inner side is fixed to the lower bearing fixing block 5. The upper and lower fixing rods 102 are connected by a connecting rod 103 to form a rigid frame structure. This frame can effectively absorb the vibration generated by the transmission system during equipment operation and maintain the relative position stability of the device. Multiple inner fixing rods 11 are also arranged on the inner side of the roller frame 1 to support and strengthen the bending strength of the entire structure, ensuring that the equipment still has good parallelism and deformation resistance under long-term high-speed operation.

[0020] Working principle During operation, the metal lead frame material passes between the devices. The upper pinch roller 2 and lower pinch roller 3 rotate synchronously under the drive of the motor, applying a stable clamping force to the strip. Because the upper limit block 6 and lower limit block 7 are fixedly connected, the spacing between the pinch rollers is kept constant, preventing damage to the material surface due to excessive pressure. The precise positioning of the left and right limit blocks 9 prevents displacement of the pinch rollers on the horizontal plane, ensuring the strip conveying path remains in the centerline position. The fixing rod and connecting rod 103 on the outside of the frame enhance the structural rigidity, reduce vibration during operation, and ensure the stability of the contact between the pinch rollers and the material.

[0021] It should be noted that, in this document, relational terms such as "one" and "two" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0022] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A clamping roller limiting mechanism for wire guide frame processing, characterized in that, include: Roller frame (1); The upper bearing fixing block (4) has an upper clamping roller (2) rotatably mounted on its inner side. The left and right ends of the upper bearing fixing block (4) are respectively provided with a left limiting block (8) and a right limiting block (9) connected to the roller frame (1). The lower part of the upper bearing fixing block (4) is provided with an upper limiting block (6). The lower bearing fixing block (5) has a lower clamping roller (3) rotatably mounted on its inner side. The left and right ends of the lower bearing fixing block (5) are respectively provided with a left limiting block (8) and a right limiting block (9) connected to the roller frame (1). The upper part of the lower bearing fixing block (5) is provided with a lower limiting block (7), and the lower limiting block (7) is fixedly connected to the upper limiting block (6).

2. The clamping roller limiting mechanism for wire guide frame processing according to claim 1, characterized in that: The roller frame (1) is provided with an outer fixing frame (10) on the outside and multiple inner fixing rods (11) on the inside.

3. The clamping roller limiting mechanism for wire guide frame processing according to claim 2, characterized in that: The outer fixing frame (10) includes an upper fixing rod (101) and a lower fixing rod (102). The left and right ends of the upper fixing rod (101) are fixedly connected to the roller frame (1), and the inner side of the upper fixing rod (101) is fixed to the upper bearing fixing block (4). The left and right ends of the lower fixing rod (102) are fixedly connected to the roller frame (1), and the inner side of the lower fixing rod (102) is fixed to the lower bearing fixing block (5).

4. The clamping roller limiting mechanism for wire guide frame processing according to claim 3, characterized in that: A connecting rod (103) is provided between the upper fixing rod (101) and the lower fixing rod (102).

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