A quick-mounting structure of a chip resistor press-mould

Abstract

The utility model discloses a kind of quick-mounting structures of chip resistor pressing die, it relates to chip resistor processing equipment technical field, including workbench, mounting seat, upper die, lower die and a pair of cross plates, mounting seat is fixedly provided with mounting bracket and mounting bracket is connected with external vertical drive mechanism, the bottom of mounting seat and the upper surface of workbench are respectively provided with limit slot, the limit slot on mounting seat and the limit slot on workbench are up and down corresponding and a pair of through holes are provided in the bottom of limit slot, the upper die is inserted in the limit slot of mounting seat, the lower die is inserted in the limit slot of workbench;The utility model is limited to upper die and lower die horizontal direction by limit slot, by cross plate rotation, clamping groove is clamped in chuck, and axial force is applied to the axial pulling and fixing of upper die and lower die, installation and disassembly are quick and convenient, simple structure, convenient maintenance and maintenance.

Description

Technical Field

[0001] This utility model relates to the technical field of chip resistor processing equipment, specifically a quick-assembly structure for a chip resistor pressing mold. Background Technology

[0002] In the manufacturing process of surface mount resistors, crimping and riveting is a crucial step. This step is mainly used to precisely and firmly crimp and rivet the metal terminals onto the predetermined positions on the ceramic substrate, forming a reliable electrical connection and mechanical fixation. The quality of this process directly determines the conductivity, mechanical strength, and long-term reliability of the surface mount resistor.

[0003] The core equipment for performing the press-fitting and riveting process is a specialized press-fitting machine, and its key components are the upper and lower molds. The upper mold typically applies punching force, while the lower mold serves as support and positioning. Because there are many different models of surface mount resistors, with varying sizes, thicknesses, and terminal shapes and positions of their ceramic substrates, the production line needs to frequently change molds to match the requirements of different products.

[0004] Currently, there are two main methods for fixing molds commonly used in the industry: one is permanent fixing, which involves fixing the mold to the mold base through interference fit, welding, or integral machining. This method has a simple structure and high rigidity, but it cannot be flexibly adjusted. When changing products, the entire mold base must be disassembled, which is cumbersome, time-consuming, and seriously affects production efficiency. The other method is multi-screw fixing, which uses multiple (usually more than four) hexagonal screws or bolts to lock the mold to the mold base. When installing or removing, all screws must be tightened or loosened one by one. However, this method is time-consuming and labor-intensive, with long downtime, affecting work efficiency. Moreover, there is a risk of screw breakage, and once broken, it is difficult to remove from the threaded hole. In addition, there are many small parts such as screws and washers, which are difficult to manage after disassembly, are easy to lose or get confused, and increase maintenance costs. Utility Model Content

[0005] To address the aforementioned shortcomings of existing technologies, this utility model provides a quick-assembly structure for a patch resistor pressing mold. The upper and lower molds are horizontally limited by a limiting groove, and the slot is engaged with the chuck by rotating the horizontal plate. An axial force is applied to pull and fix the upper and lower molds axially. The installation and disassembly are quick and convenient, the structure is simple, and maintenance and repair are easy.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a quick-assembly structure for a chip resistor bonding mold, comprising a worktable, a mounting base, an upper mold, a lower mold, and a pair of horizontal plates. A mounting bracket is fixedly mounted on the mounting base and connected to an external vertical drive mechanism. Limiting grooves are respectively formed on the bottom of the mounting base and the upper surface of the worktable. The limiting grooves on the mounting base and the worktable correspond vertically, and a pair of through holes are formed at the bottom of the limiting grooves. The upper mold is inserted into the limiting groove of the mounting base, and the lower mold is inserted into the limiting groove of the worktable. A pair of fixing rods are provided on one side of the upper and lower molds corresponding to the limiting grooves. A diameter greater than [missing information] is fixedly provided at the end of the fixing rods away from the upper and lower molds. The chuck of the fixed rod and the fixed rod pass through the through hole to the bottom of the worktable and the top of the mounting base. Threaded rods are rotatably installed at the center of the bottom of the worktable and the center of the top of the mounting base, respectively. A threaded sleeve is fixedly installed at the center of the horizontal plate. A pair of horizontal plates are screwed onto the threaded rods on the mounting base and the worktable through the threaded sleeves, respectively. The horizontal plates have slots near their ends. The slots on both sides of the horizontal plate are centrally symmetrical. The width of the slots is greater than the diameter of the fixed rod and smaller than the diameter of the chuck. Rotating the horizontal plate allows the slots on both sides to fit onto the fixed rod. The thread direction of the threaded rod and the threaded sleeve and the opening direction of the slots on the horizontal plate are such that rotating the threaded rod will not cause the horizontal plate to rotate.

[0007] Preferably, a rubber pad is provided on the chuck and on one side corresponding to the horizontal plate.

[0008] Preferably, the bottom of the upper mold and the lower mold and the side wall of the limiting groove are designed with slopes.

[0009] Preferably, the opening of the slot on the horizontal plate is flared.

[0010] Preferably, a handle is provided at one outer end of the threaded rod.

[0011] Preferably, the side of the chuck away from the fixing rod is configured as a curved surface.

[0012] This utility model provides a quick-release structure for a chip resistor bonding mold, which has the following advantages: 1. This utility model limits the upper and lower dies in the horizontal direction by limiting the groove, and uses the horizontal plate to rotate to engage the slot with the chuck, and applies axial force to pull and fix the upper and lower dies in the axial direction. It is quick and convenient to install and disassemble, has a simple structure, is easy to repair and maintain, and the parts do not need to be separated from the equipment, will not be lost, and are easy to manage. 2. The side wall of the limiting groove of this utility model is provided with an inclined surface between the upper mold and the lower mold, which facilitates the insertion of the upper mold and the lower mold during installation. Similarly, the side of the chuck away from the fixing rod is provided with a curved surface, which facilitates insertion into the through hole, saves docking time, and facilitates installation. Attached Figure Description

[0013] Figure 1 This is a front cross-sectional view of a quick-assembly structure for a chip resistor pressing mold according to this utility model; Figure 2 This is a schematic diagram of the horizontal plate in this utility model.

[0014] In the diagram: 1. Workbench; 2. Through hole; 3. Rubber pad; 4. Horizontal plate; 5. Threaded rod; 6. Rotary handle; 7. Threaded sleeve; 8. Slot; 9. Lower mold; 10. Inclined surface; 11. Limiting groove; 12. Fixing rod; 13. Upper mold; 14. Mounting base; 15. Chuck; 16. Mounting bracket; 17. Flared opening. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] like Figure 1-2As shown, a quick-assembly structure for a surface mount resistor bonding mold includes a worktable 1, a mounting base 14, an upper mold 13, a lower mold 9, and a pair of horizontal plates 4. A mounting bracket 16 is fixedly mounted on the mounting base 14 and connected to an external vertical drive mechanism. Limiting grooves 11 are respectively formed on the bottom of the mounting base 14 and the upper surface of the worktable 1. The limiting grooves 11 on the mounting base 14 and the limiting grooves 11 on the worktable 1 are vertically corresponding, and a pair of through holes 2 are formed at the bottom of the limiting grooves 11. The upper mold 13 is inserted into the limiting groove 11 of the mounting base 14, and the lower mold 9 is inserted into the limiting groove 11 of the worktable 1. A pair of fixing rods 12 are provided on one side of the upper mold 13 and the lower mold 9 corresponding to the limiting groove 11. A chuck 15 with a diameter larger than the fixing rod 12 is fixedly provided at the end of the fixing rod 12 away from the upper mold 13 and the lower mold 9. The chuck 15 and the fixing rod 12 pass through the through hole 2 to the bottom of the worktable 1 and the top of the mounting base 14. The center of the bottom of the worktable 1 and the top of the mounting base 14 are located at the center of the worktable 1. A threaded rod 5 is rotatably mounted at the center of each of the horizontal plates 4, and a threaded sleeve 7 is fixedly mounted at the center of each horizontal plate 4. A pair of horizontal plates 4 are screwed onto the threaded rods 5 on the mounting base 14 and the worktable 1 respectively via the threaded sleeves 7. The horizontal plates 4 have slots 8 near their ends, which are centrally symmetrical. The width of each slot 8 is greater than the diameter of the fixed rod 12 and smaller than the diameter of the chuck 15. Rotating the horizontal plate 4 allows the slots 8 on both sides to fit onto the fixed rod 12. The thread direction of the threaded rod 5 and the threaded sleeve 7 is such that the opening direction of the slot 8 on the horizontal plate 4 is such that rotating the threaded rod 5 will not cause the horizontal plate 4 to rotate; a rubber pad 3 is provided on the chuck 15 and on one side corresponding to the horizontal plate 4; the bottom of the upper mold 13 and the lower mold 9 and the side wall of the limiting groove 11 are designed with inclined surfaces 10; the opening of the slot 8 on the horizontal plate 4 is designed with an flared opening 17; a rotating handle 6 is provided on one side of the threaded rod 5; the side of the chuck 15 away from the fixed rod 12 is set as a curved surface.

[0017] Its detailed connection methods are well-known technologies in this field. The following mainly introduces the working principle and process, as follows: According to the instruction manual Figure 1-2As can be seen, in this utility model, the workbench 1 is set on the ground, and the mounting base 14 is connected to the external vertical drive mechanism through the mounting bracket 16. The pressing and riveting work is existing technology and will not be described in this utility model; only the quick-assembly structure of the pressing mold will be described. The upper mold 13 and the lower mold 9 are installed in the same way; only the installation of the lower mold 9 will be described below. The bottom of the lower mold 9 is placed in the limiting groove 11. It should be understood that different molds may have the same dimensions, but the shape, number of molds, and spacing of the molds may differ. Furthermore, the limiting groove 11 on the workbench 1 can also be achieved by fixing a pad on the workbench 1 and opening the limiting groove 11 on the pad to increase the strength of the workbench 1. When the bottom of the lower mold 9 is placed in the limiting groove 11, the chuck 15 and the fixing rod 12 are inserted into the through hole 2. The chuck 15, the fixing rod 12, and the through hole 2 are paired and symmetrically designed, and are positioned at the bottom of the workbench 1. Since the upper end of the threaded rod 5 is rotatably connected to the bottom of the workbench 1, the operator can rotate the horizontal plate 4. Because the slots 8 on the horizontal plate 4 are centrally symmetrical and correspond to the positions of the fixed rod 12, both slots 8 can be simultaneously fitted onto the fixed rod 12. Since the horizontal plate 4 is screwed to the threaded rod 5 via the threaded sleeve 7, and the thread direction of the threaded rod 5 and the threaded sleeve 7 are such that rotating the threaded rod 5 will not cause the horizontal plate 4 to rotate. Specifically, if the opening direction of the slots 8 on the horizontal plate 4 is as follows... Figure 2 As shown, if the threaded rod rotates counterclockwise, it will be blocked by the fixing rod 12 and cannot continue to rotate. Therefore, the design should ensure that the counterclockwise rotation of the threaded rod allows the horizontal plate 4 to move away from the worktable 1. In this way, the horizontal plate 4 can push the chuck 15 downwards vertically without rotating, thereby fixing the lower mold 9 in the limiting groove 11. During disassembly, simply rotate the threaded rod 5 in the opposite direction. The back side of the slot 8 will be blocked by the fixing rod 12, preventing the threaded rod 5 from spinning freely. This utility model limits the upper mold 13 and lower mold 9 horizontally through the limiting groove 11. The horizontal plate 4 rotates to engage the slot 8 with the chuck 15, and applies axial force to pull and fix the upper mold 13 and lower mold 9 axially. Installation and disassembly are quick and convenient, the structure is simple, maintenance and repair are convenient, parts do not need to be separated from the equipment, will not be lost, and management is convenient.

[0018] Of course, in this utility model, the threads of the threaded rod 5 and the threaded sleeve 7 need to have a certain strength, the rotation connection point of the threaded rod 5 with the worktable 1 and the mounting base 14 needs to have a certain strength, and the horizontal plate 4, the chuck 15 and the fixing rod 12 are also selected from metal plates with a certain strength to ensure the stability of the fixation.

[0019] A rubber pad 3 is provided on the chuck 15 and on one side corresponding to the horizontal plate 4. The pressure at the contact point between the horizontal plate 4 and the chuck 15 is relatively high. The rubber pad 3 is provided to reduce wear and scratches between the two.

[0020] The bottom of the upper mold 13 and the lower mold 9, and the side wall of the limiting groove 11, are designed with inclined surfaces 10 to facilitate insertion of the upper mold 13 and the lower mold 9 during installation. Similarly, the side of the chuck 15 away from the fixing rod 12 is set as a curved surface to facilitate insertion into the through hole 2, saving docking time and facilitating installation. In addition, the opening of the slot 8 on the horizontal plate 4 is designed with an flared opening 17 to facilitate the slot 8 to fit onto the fixing rod 12.

[0021] One end of the threaded rod 5 is provided with a handle 6 to facilitate the rotation of the threaded rod 5 by personnel. At that time, in order to improve the degree of automation, the handle 6 could also be designed as a motor.

[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 quick-assembly structure for a surface mount resistor bonding mold, characterized in that, The assembly includes a worktable (1), a mounting base (14), an upper mold (13), a lower mold (9), and a pair of horizontal plates (4). A mounting bracket (16) is fixedly mounted on the mounting base (14) and connected to an external vertical drive mechanism. Limiting grooves (11) are respectively formed at the bottom of the mounting base (14) and on the upper surface of the worktable (1). The limiting groove (11) on the upper part of the workbench (1) and the limiting groove (11) on the workbench (1) are vertically aligned and a pair of through holes (2) are provided at the bottom of the limiting groove (11). The upper mold (13) is inserted into the limiting groove (11) of the mounting base (14), and the lower mold (9) is inserted into the limiting groove (11) of the workbench (1). A pair of fixing rods (12) are provided on one side of the upper mold (13) and the lower mold (9) corresponding to the limiting groove (11). A chuck (15) with a diameter larger than the fixing rod (12) is fixedly provided at the end of the fixing rod (12) away from the upper mold (13) and the lower mold (9). The chuck (15) and the fixing rod (12) pass through the through hole (2) to the bottom of the workbench (1) and the top of the mounting base (14). The center position of the bottom of the workbench (1) and the mounting base (14) are respectively connected. A threaded rod (5) is rotatably provided at the top center position of the horizontal plate (4), and a threaded sleeve (7) is fixedly provided at the center position of the horizontal plate (4). A pair of horizontal plates (4) are screwed onto the threaded rod (5) on the mounting base (14) and the worktable (1) respectively through the threaded sleeve (7). The horizontal plate (4) has a slot (8) at the end face near both ends. The slots (8) on both sides of the horizontal plate (4) are centrally symmetrical. The width of the slot (8) is greater than the diameter of the fixed rod (12) and less than the diameter of the chuck (15). Rotating the horizontal plate (4) can make the slots (8) on both sides fit onto the fixed rod (12). The thread direction of the threaded rod (5) and the threaded sleeve (7) and the opening direction of the slot (8) on the horizontal plate (4) satisfy the condition that the horizontal plate (4) will not rotate when the threaded rod (5) is rotated.

2. The quick-assembly structure of a chip resistor bonding mold according to claim 1, characterized in that, A rubber pad (3) is provided on the chuck (15) and on one side corresponding to the horizontal plate (4).

3. The quick-assembly structure of a chip resistor bonding mold according to claim 1, characterized in that, The bottom of the upper mold (13) and the lower mold (9) are designed with inclined surfaces (10) at the side wall of the limiting groove (11).

4. The quick-assembly structure of a chip resistor bonding mold according to claim 1, characterized in that, The opening of the slot (8) on the horizontal plate (4) is designed with an flared (17) opening.

5. The quick-assembly structure of a chip resistor bonding mold according to claim 1, characterized in that, A handle (6) is provided at one end of the outer side of the threaded rod (5).

6. The quick-assembly structure of a chip resistor bonding mold according to claim 1, characterized in that, The side of the chuck (15) away from the fixing rod (12) is configured as a curved surface.

Images