Novel film drawing structure of chip mounter

Abstract

The utility model relates to a novel film drawing structure of a chip mounter, which is applied to material belt film drawing of a small chip mounter. The device comprises a motor, a rotating shaft, a right limiting piece and a left limiting piece, an output shaft of the motor is parallel to the rotating shaft, the rotating shaft is used for winding a material film of a material disc, and the right limiting piece and the left limiting piece are arranged at the two ends of the output shaft of the motor in a sleeving mode respectively. The limiting ring is arranged on an output shaft of the motor in a sleeving mode and arranged between the right limiting piece and the left limiting piece. The silica gel ring is arranged between the limiting rings or between the limiting rings and the right limiting piece or the left limiting piece, and the silica gel ring is used for providing frictional resistance for film drawing. The utility model has the advantages of reasonable structural design, simple and reliable structure, light weight, low cost and low processing requirement, and parts can be manufactured by 3D printing.

Description

Technical Field

[0001] This utility model relates to a novel film-pulling structure for a chip mounter, which is mainly used for tape film pulling in small chip mounters. Background Technology

[0002] Existing automated SMT placement production lines, especially small-scale automated placement machines, often have complex film-pulling structures, making operation difficult and the overall material rack heavy, resulting in high manufacturing and transportation costs. Furthermore, maintenance and replacement are also cumbersome and costly.

[0003] For example, Chinese utility model patent CN 205266041 U discloses a film pulling mechanism for a patch attaching machine, including a bracket, a drive shaft, and a drive mechanism. A flange gear is mounted on the drive shaft to drive the film movement. The film passes over the flange gear. The mechanism also includes a clamping mechanism that presses the film tightly against the flange gear. The clamping mechanism includes a fixed rod with a fixed seat mounted on it. The fixed rod is connected to the bracket, and a button-type roller seat is movably connected to the fixed seat. A pressure roller is movably connected to one end of the button-type roller seat. A spring is provided between the button-type roller seat and the fixed seat. The pressure roller presses the film tightly against the flange gear through the action of the spring. This utility model claims that the spring preload can be adjusted according to different material strips, ensuring smooth operation of each film pulling operation, strong independence, significantly reducing the production cost of the material peeling drive source, and improving production efficiency.

[0004] However, this type of film-pulling mechanism for pick-and-place machines still suffers from the complexity inherent in existing technologies. The overall material rack is relatively heavy, resulting in high costs and inconvenient replacement and maintenance. Furthermore, its synchronous belt control transmission is not precise enough, making synchronization problems prone to occur. Due to manufacturing tolerances, the peeling resistance of the springs is also prone to fluctuations and is difficult to adjust. Summary of the Invention

[0005] The technical problem to be solved by this utility model is to provide a novel film stretching structure for a patch machine that has a reasonable structural design, simple and reliable structure, light weight and low cost, low processing requirements, and parts that can be 3D printed.

[0006] The technical solution adopted by this utility model to solve the above-mentioned technical problems is a novel film stretching structure for a chip mounter, comprising a motor and a rotating shaft, wherein the output shaft of the motor is parallel to the rotating shaft, and the rotating shaft is used to wind the film from the material tray. Its structural feature is that it also includes the following components:

[0007] (1) A right limiting member and a left limiting member, wherein the right limiting member and the left limiting member are respectively sleeved on both ends of the motor output shaft;

[0008] (2) A limiting ring, which is sleeved on the output shaft of the motor and is disposed between the right limiting member and the left limiting member;

[0009] (3) A silicone ring, wherein the silicone ring is disposed between the limiting rings, or between the limiting rings and the right limiting member or the left limiting member, and the silicone ring is used to provide frictional resistance for film stretching.

[0010] A basic film-stretching unit is constructed by sequentially using a right limiting component, a silicone ring, a limiting ring, another silicone ring, and a left limiting component. These components are connected in series via a motor shaft. The frictional damping between the silicone ring and the motor shaft generates a film-stretching force. The damping can be adjusted by controlling the tightness and dimensions to achieve a good film-stretching effect. The structure is very simple and reliable. Furthermore, the number of silicone rings and limiting rings can be increased depending on the material tray size, always ensuring the silicone ring is positioned between the limiting rings. At both ends, the silicone ring is positioned between the limiting rings and the left and right limiting components, allowing for flexible adjustment to the number of material trays.

[0011] Preferably, the motor of the present invention is provided with a protective plate on one side, and a gasket is provided on one or both sides of the protective plate and fitted onto the rotating shaft.

[0012] Preferably, the gasket described in this invention is a plastic gasket.

[0013] The use of plastic gaskets allows for more precise position control, and silicone rings can be made to a more suitable size.

[0014] Preferably, a driven shaft is provided between the right limiting member and the left limiting member of the present invention, and the driven shaft passes through the limiting ring.

[0015] The use of a driven shaft allows for better control of the damping between the silicone ring and the driven shaft during film stretching. This provides better control over the damping magnitude and maintains stable resistance, resulting in better film stretching. Simultaneously, it ensures that the motor's power and transmission remain unaffected.

[0016] Preferably, the limiting ring of this utility model is provided with a tightening screw, and the lower end of the tightening screw presses against the driven shaft.

[0017] The use of tightening screws allows for adjustment of the spacing when the silicone ring wears down, has slight dimensional deviations, or even deforms or ages. Once the spacing is increased, the tightening screws can be tightened.

[0018] Preferably, the gasket and silicone ring of this invention are disposed between the output shaft of the motor and the driven shaft, and the silicone ring and the driven shaft form damping.

[0019] Preferably, the output shaft of the motor described in this invention is connected to the rotating shaft via a coupling.

[0020] Compared with the prior art, this utility model has the following advantages and effects:

[0021] 1. Silicone rings are used to provide resistance to film pulling, and limiting rings are used to separate each set of silicone rings. The structure is particularly simple, easy to manufacture, and inexpensive.

[0022] 2. The use of gaskets and silicone rings makes the film pulling resistance more stable and reliable, easy to adjust, and easy to replace.

[0023] 3. The right and left limit switches at both ends can be removed for disassembly and maintenance, making the operation simple and convenient.

[0024] 4. A driven shaft is set up, and the frictional damping between the driven shaft and the silicone ring further stabilizes the reliability of the film stretching resistance, while also making the entire structure more stable.

[0025] 5. The application of the tightening screw further enhances the adaptability between the silicone ring and the driven shaft, effectively adjusts the damping magnitude, and further stabilizes the reliability of the film stretching resistance. Moreover, when the silicone ring is worn, has dimensional deviations, or even experiences wear and aging, it can be adjusted using the tightening screw, making the entire structure more stable.

[0026] 6. Due to its simple structure, the requirements for the machining precision and materials of the components are relatively low. Therefore, some structural parts are made using 3D printing technology. The overall frame is easy to assemble, compact, and lightweight, reducing manufacturing and transportation costs. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the overall installation position structure of Embodiment 1 of this utility model.

[0029] Figure 2 This is a schematic diagram of some components of Embodiment 1 of the present utility model.

[0030] Figure 3 for Figure 2 A schematic diagram of its decomposed structure.

[0031] Figure 4 This is a schematic diagram of the tightening screw in Example 1.

[0032] Figure 5This is a partial structural schematic diagram of Embodiment 2 of the present invention.

[0033] Figure 6 for Figure 5 A schematic diagram of its decomposed structure.

[0034] Figure 7 This is a schematic diagram of the tightening screw in Example 2.

[0035] Labeling Explanation: 1. Motor Shaft, 2. Limiting Ring, 3. Right Limiting Component, 4. Left Limiting Component, 5. Silicone Ring, 6. Plastic Gasket, 7. Driven Shaft, 8. Feeder, 9. Standard Rail, 10. Rail Fixing Block, 11. Protective Plate, 12. Motor, 13. Coupling, 14. Rotating Shaft, 15. Material Tray, 21. Motor Shaft Hole, 22. Driven Shaft Hole, 23. Limiting Protrusion, 24. Tightening Screw, 41. Sealing Protrusion. Detailed Implementation

[0036] The present invention will be further described in detail below with reference to the embodiments. The following embodiments are explanations of the present invention, but the present invention is not limited to the following embodiments.

[0037] Example 1: As Figures 1 to 4 As shown, this embodiment describes a novel film-stretching structure for a chip mounter. Figure 2 , 3 As shown, a typical minimum material rack membrane stretching structure consists of a left limiting member 4, a right limiting member 3, a motor shaft 1, a driven shaft 7, a plastic gasket 6, a limiting ring 2, and a silicone ring 5. The limiting ring 2 has a motor shaft hole 21, a driven shaft hole 22, and a limiting protrusion 23. The motor shaft hole 21 and the driven shaft hole 22 are used for inserting the motor shaft 1 and the driven shaft 7, respectively. The limiting protrusion 23 controls the spacing width. The right limiting member 3 and the left limiting member 4 have a closing protrusion 41, which also controls the spacing width. The plastic gasket 6, the limiting ring 2, and the silicone ring 5 are threaded onto the motor shaft 1 at intervals. There is one left limiting member 4 and one right limiting member 3 in the entire membrane stretching structure, located at both ends, to limit and protect the first and last silicone rings 5. The middle limiting ring 2 has three functions: 1. To limit and protect the silicone rings 5. 2. To ensure the distance between the membrane stretching structure units. 3. The limiting ring 2 has a straight groove in the middle, which limits the distance between the motor shaft 1 and the driven shaft 7. Adjusting the meshing distance between the silicone ring 5 and the driven shaft 7 adjusts the friction force of the film stretching. Thus, one intermediate limiting ring 2, two plastic gaskets 6, and one silicone ring 5 constitute an effective film stretching structure unit. The number of these units can be increased or decreased in an orderly manner according to needs and the length of the material rack. The minimum number can be zero, and the maximum number is determined as needed. In addition, the length of the driven shaft 7 is determined according to the length of the film stretching structure unit. The shorter the length, the easier it is to install, disassemble, and replace. The shortest length cannot be shorter than the length of the smallest material rack film stretching structure.

[0038] There is a small hole at the lower end of the limiting ring 2. The hole has an internal thread and is used to install the tightening screw 24. The tightening screw 24 can adjust the distance and tightness between the driven shaft 7 and the silicone ring 5. If the silicone ring 5 is worn and the middle distance is too large, the tightening screw 24 can be tightened.

[0039] The working process of the material rack during film stretching is as follows: the material strip in the material tray 15 is loaded into the elastic feeder 8, the nylon film passes around the rotating shaft 14 and through the engagement point of the driven shaft 7 and the silicone ring 5. During feeding, the motor 12 provides power and drives the motor shaft 1 to rotate through the coupling 13, thereby driving the silicone ring 5. The silicone ring 5 and the driven shaft 7 engage, and the friction provided by their rotation drives the nylon strip to perform film stretching.

[0040] A standard track 9, a track fixing block 10, and a protective plate 11 are provided on one side of the motor 12 for mounting the rotating shaft 14 and the material tray 15.

[0041] Generally speaking, the damping provided by the membrane stretching mechanism provides a tensile force of about 200N, which is sufficient for the membrane stretching motion.

[0042] Example 2: As Figures 5 to 7 As shown, this embodiment describes a novel film-pulling structure for a chip mounter, which is basically the same as the mechanism in Embodiment 1, except that it does not have a driven shaft. In operation, the film is pulled using the damping generated by the meshing of the motor shaft 1 and the silicone ring 5. At this time, the tightening screw 24 holds the silicone ring 5 in place, thus allowing adjustment of the fit between the motor shaft 1 and the silicone ring 5, and thus regulating the damping.

[0043] Furthermore, it should be noted that the shapes and names of the parts and components described in the specific embodiments described in this specification may differ. All equivalent or simple variations made to the structure, features, and principles described in this utility model patent concept are included within the protection scope of this utility model patent. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, as long as they do not deviate from the structure of this utility model or exceed the scope defined in these claims, all of which should fall within the protection scope of this utility model.

Claims

1. A novel film pulling structure of a patch machine, comprising a motor and a rotating shaft, wherein an output shaft of the motor is parallel to the rotating shaft, and the rotating shaft is used for winding a film of a material disc, characterized in that: It also comprises the following components: (1) right and left limit members, which are respectively sleeved on both ends of the motor output shaft; (2) a limiting ring, which is sleeved on the output shaft of the motor and is arranged between the right and left limit members; (3) a silica gel ring, which is arranged between the limiting ring or between the limiting ring and the right or left limit member, and is used to provide friction resistance for pulling the film.

2. The new film pulling structure of a patch machine according to claim 1, characterized in that: One side of the motor is provided with a protective plate, and one side or both sides of the protective plate is provided with a gasket sleeved on the rotating shaft.

3. The new film pulling structure of a patch machine according to claim 2, characterized in that: The gasket is a plastic gasket.

4. The new film pulling structure of a patch machine according to claim 2 or 3, characterized in that: A driven shaft is further arranged between the right and left limit members, and the driven shaft penetrates the limiting ring.

5. The new film pulling structure of a patch machine according to claim 4, characterized in that: A tightening screw is arranged on the limiting ring, and the lower end of the tightening screw abuts against the driven shaft.

6. The new film pulling structure of a patch machine according to claim 5, characterized in that: The gasket and the silica gel ring are arranged between the output shaft of the motor and the driven shaft, and the silica gel ring forms damping with the driven shaft.

7. The new film pulling structure of a patch machine according to claim 6, characterized in that: The output shaft of the motor is connected with the rotating shaft through a shaft coupling.

Images