Novel film tearing clamping jaw mechanism of automatic film tearing machine

Abstract

The utility model discloses a novel film tearing clamping jaw mechanism of an automatic film tearing machine. The novel film tearing clamping jaw mechanism comprises an XZ moving platform, the XZ moving platform is connected with the horizontal moving platform on one side through a connecting frame, and the XZ moving platform transversely moves on a feeding mechanism on the horizontal moving platform. A discharging platform is arranged on one side of the horizontal moving platform; and the clamping jaw assembly is arranged on one side of the XZ moving platform. Through the improvement, clamping is firmer during film tearing, the film tearing success rate is increased to 95% or above from about 60%, and the working efficiency is improved; the metal clamping jaw is arranged below the rubber pressing wheel, so that the lower jaw can be slightly embedded into the rubber pressing wheel during clamping, a large clamping force is generated, and meanwhile, a rubber film can be prevented from being broken by clamping.

Description

Technical Field

[0001] The utility model relates to a novel film-tearing clamping mechanism of an automatic film-tearing machine, belonging to the technical field of semiconductor QFN automatic film-tearing machines. Background Art

[0002] QFN package film removal is a necessary process in semiconductor packaging. The film originally mounted for dispensing and gold wire welding is removed after plastic packaging to facilitate subsequent pin electroplating. When tearing the film, the material needs to be heated to between 180-250 degrees (the temperature selection is determined by the viscosity of the material). In order to meet the requirements of safety and automation, a mechanical gripper is used with PLC control for automatic film tearing operation.

[0003] The previous mechanical gripper used a clamp-type structure with both the upper jaw 01 and the lower jaw 02 made of metal (see attached Figure 1 ).

[0004] The disadvantage of this clamping method is that it is difficult to find a suitable clamping force for film tearing, because the upper and lower clamping jaws are made of metal. When the clamping force is large, the film is easily broken. When the clamping force is small, the film is easy to slip when tearing, resulting in film tearing failure. The success rate of film tearing when using this type of clamp is only about 60% when tearing high-temperature film.

[0005] Therefore, it is necessary to design a new type of automatic film tearing machine film tearing claw mechanism to improve the film tearing success rate. Utility Model Content

[0006] In view of the problems existing in the above-mentioned prior art, the utility model provides a novel film-tearing claw mechanism of an automatic film-tearing machine, thereby solving the above-mentioned technical problems.

[0007] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a new type of automatic film tearing machine film tearing claw mechanism, including an XZ moving platform; the XZ moving platform is connected to a horizontal moving platform on one side through a connecting frame, and the XZ moving platform realizes lateral movement through a feeding mechanism on the horizontal moving platform; a material discharge platform is arranged on one side of the horizontal moving platform; and it also includes a claw assembly arranged on one side of the XZ moving platform.

[0008] The clamping jaw assembly includes a connecting plate, and the connecting plate includes a left connecting plate, a middle connecting plate and a right connecting plate; the left connecting plate is provided with a plurality of mounting holes; the left connecting plate is connected to the side end of the sliding seat of the XZ moving platform through an L-shaped connecting plate;

[0009] Two vertically arranged left and right limit plates are provided on one side of the right connecting plate close to the discharge platform; a clamping wheel assembly is provided between the limit plates; a metal lower clamping jaw assembly is provided below the clamping wheel assembly; one end of the metal lower clamping jaw assembly is connected to the clamping cylinder through a connecting rod; the clamping cylinder drives the connecting rod to move up and down and then drives the metal lower clamping jaw assembly to move.

[0010] The L-shaped connecting plate includes a short side connecting plate and a long side connecting plate; the short side connecting plate is connected to the side end of the sliding seat through a locking piece; the long side connecting plate is locked in the mounting hole on the left connecting plate through a locking piece and then fixedly connected to the connecting plate.

[0011] The clamping wheel assembly comprises a clamping wheel and a mounting shaft; the clamping wheel is arranged on the mounting shaft; and the mounting shaft is arranged between the left and right limiting plates.

[0012] The outer end of the clamping wheel is wrapped with a rubber layer.

[0013] The metal lower clamping jaw assembly includes a lower clamping jaw, a rotating shaft and a hinged portion at the tail end; the rotating shaft passes through a connecting hole in the middle of the lower clamping jaw and is arranged between the left and right limit plates; the hinged portion at the tail end is hingedly fixed to a connecting rod; the connecting rod is fixedly connected to the cylinder end head of the clamping cylinder.

[0014] A cylinder mounting seat is fixed to the side of the right connecting plate away from the material discharging platform; the front end protrusion of the cylinder mounting seat is fixed to the upper end of the clamping cylinder through a connecting piece.

[0015] The beneficial effects of the utility model are as follows: the mechanism adopts the above-mentioned improvement, so that the clamping is more reliable when tearing the film, and the success rate of film tearing is increased from about 60% to more than 95%, thereby improving the work efficiency; by arranging a metal clamping claw under the rubber pressure wheel, the lower claw can be slightly embedded in the rubber pressure wheel during clamping, thereby generating a larger clamping force and preventing the rubber film from being broken. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the clamping claw structure in the background technology;

[0017] Figure 2 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the connection relationship between the clamping jaw assembly and the XZ moving platform of the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the clamping jaw assembly of the utility model.

[0020] In the figure: 1. XZ moving platform, 2. Clamping jaw assembly, 21. Connecting plate, 211. Left connecting plate, 212. Middle connecting plate, 213. Right connecting plate, 2131. Limiting plate, 3. Discharging platform, 4. L-shaped connecting plate, 41. Short side connecting plate, 42. Long side connecting plate, 5. Clamping wheel assembly, 51. Clamping wheel, 52. Mounting shaft, 6. Metal lower clamping jaw assembly, 61. Lower clamping jaw, 62. Rotating shaft, 63. Articulated part, 7. Connecting rod, 8. Clamping cylinder, 9. Cylinder mounting seat, 10. Horizontal moving platform. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail through the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the scope of the utility model.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as those commonly understood by technicians in the technical field to which the present invention belongs. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0023] like Figure 2 As shown, a novel film tearing jaw mechanism of an automatic film tearing machine includes an XZ moving platform 1; the XZ moving platform 1 is connected to a horizontal moving platform 10 on one side through a connecting frame, and the XZ moving platform 1 is realized by a feeding mechanism on the horizontal moving platform 10 to achieve lateral movement; a discharge platform 3 is arranged on one side of the horizontal moving platform 10; and it also includes a jaw assembly 2 arranged on one side of the XZ moving platform 1.

[0024] This embodiment is preferred, refer to Figure 3 and Figure 4 The clamping jaw assembly 2 includes a connecting plate 21, the connecting plate 21 includes a left connecting plate 211, a middle connecting plate 212 and a right connecting plate 213; the left connecting plate 211 is provided with a plurality of mounting holes; the left connecting plate 211 is connected to the side end of the sliding seat of the XZ moving platform 1 through an L-shaped connecting plate 4;

[0025] Two vertically arranged left and right limit plates 2131 are provided on one side of the right connecting plate 213 close to the discharge platform 3; a clamping wheel assembly 5 is provided between the limit plates 2131; a metal lower clamping jaw assembly 6 is provided below the clamping wheel assembly 5; one end of the metal lower clamping jaw assembly 6 is connected to the clamping cylinder 8 through a connecting rod 7; the clamping cylinder 8 drives the connecting rod 7 to move up and down and then drives the metal lower clamping jaw assembly 6 to move.

[0026] In this preferred embodiment, the L-shaped connecting plate 4 includes a short side connecting plate 41 and a long side connecting plate 42; the short side connecting plate 41 is connected to the side end of the sliding seat through a locking member; the long side connecting plate 42 is locked in the mounting hole on the left connecting plate 211 through a locking member and then fixedly connected to the connecting plate 21.

[0027] Preferably, in this embodiment, the clamping wheel assembly 5 includes a clamping wheel 51 and a mounting shaft 52 ; the clamping wheel 51 is disposed on the mounting shaft 52 ; and the mounting shaft 52 is disposed between the left and right limiting plates 2131 .

[0028] Preferably in this embodiment, the outer end of the clamping wheel 51 is wrapped with a rubber layer.

[0029] In this preferred embodiment, the metal lower clamping jaw assembly 6 includes a lower clamping jaw 61, a rotating shaft 62 and a hinged portion 63 at the tail end; the rotating shaft 62 passes through a connecting hole in the middle of the lower clamping jaw 61, and is arranged between the left and right limit plates 2131; the hinged portion 63 at the tail end is hingedly fixed to the connecting rod 7; the connecting rod 7 is fixedly connected to the cylinder end head of the clamping cylinder 8.

[0030] Preferably, in this embodiment, a cylinder mounting seat 9 is fixed to the side of the right connecting plate 213 away from the material discharging platform 3; the front end protrusion of the cylinder mounting seat 9 is fixed to the upper end of the clamping cylinder 8 through a connecting piece.

[0031] Working principle: tear film clamp (with Figure 4 ) is installed on a mechanism that can move in the XZ direction. The sheet before film tearing is placed on the platform. The clamping jaws are moved to the initial position of film tearing through the movement of the mechanism in the XZ direction. The clamping jaws clamp the film through the clamping cylinder 8. Then, the film tearing clamping jaws clamp the film and move upward and leftward to separate the film and the sheet.

[0032] After the improvement, a rubber pressure wheel mechanism is used on the top and a metal clamping claw is used on the bottom. In this way, the lower claw can be slightly embedded in the rubber pressure wheel when clamping, thereby generating a larger clamping force and preventing the rubber film from being broken.

[0033] This structure makes the film tearing more secure and does not easily break the film, thereby increasing the film tearing success rate from about 60% to more than 95%, thereby improving work efficiency.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modification, equivalent substitution or improvement made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A novel automatic film tearing machine film tearing jaw mechanism, comprising an XZ moving platform (1); the XZ moving platform (1) is connected to a horizontal moving platform (10) on one side through a connecting frame, and the XZ moving platform (1) is moved horizontally by a feeding mechanism on the horizontal moving platform (10); a material discharge platform (3) is provided on one side of the horizontal moving platform (10); the characteristics are as follows: It also includes a clamping claw assembly (2) arranged on one side of the XZ moving platform (1).

2. According to the novel automatic film tearing machine film tearing claw mechanism of claim 1, it is characterized in that: The clamping jaw assembly (2) comprises a connecting plate (21), the connecting plate (21) comprising a left connecting plate (211), a middle connecting plate (212) and a right connecting plate (213); a plurality of mounting holes are provided on the left connecting plate (211); the left connecting plate (211) is connected to a side end of a sliding seat of the XZ moving platform (1) via an L-shaped connecting plate (4); Two left and right vertically arranged limit plates (2131) are provided on one side of the right connecting plate (213) close to the material discharging platform (3); a clamping wheel assembly (5) is provided between the limit plates (2131); a metal lower clamping jaw assembly (6) is provided below the clamping wheel assembly (5); one end of the metal lower clamping jaw assembly (6) is connected to a clamping cylinder (8) via a connecting rod (7); the clamping cylinder (8) drives the connecting rod (7) to move up and down, thereby driving the metal lower clamping jaw assembly (6) to move.

3. According to the novel automatic film tearing machine film tearing claw mechanism of claim 2, it is characterized in that: The L-shaped connecting plate (4) comprises a short side connecting plate (41) and a long side connecting plate (42); the short side connecting plate (41) is connected to the side end of the sliding seat via a locking member; the long side connecting plate (42) is locked to the mounting hole on the left connecting plate (211) via the locking member and is thus fixedly connected to the connecting plate (21).

4. The novel automatic film tearing machine film tearing claw mechanism according to claim 2 is characterized in that: The clamping wheel assembly (5) comprises a clamping wheel (51) and a mounting shaft (52); the clamping wheel (51) is arranged on the mounting shaft (52); and the mounting shaft (52) is arranged between two left and right limiting plates (2131).

5. The novel automatic film tearing machine film tearing claw mechanism according to claim 2 is characterized in that: The outer end of the clamping wheel (51) is wrapped with a rubber layer.

6. The novel automatic film tearing machine film tearing jaw mechanism according to claim 2 is characterized in that: The metal lower clamping jaw assembly (6) comprises a lower clamping jaw (61), a rotating shaft (62) and a hinged portion (63) at the rear end; the rotating shaft (62) passes through a connecting hole in the middle of the lower clamping jaw (61) and is arranged between the left and right limit plates (2131); the hinged portion (63) at the rear end is hingedly fixed to a connecting rod (7); and the connecting rod (7) is fixedly connected to a cylinder end of a clamping cylinder (8).

7. The novel automatic film tearing machine film tearing claw mechanism according to claim 2 is characterized in that: A cylinder mounting seat (9) is fixed to the side of the right connecting plate (213) away from the material discharging platform (3); a front end protrusion of the cylinder mounting seat (9) is fixed to the upper end of the clamping cylinder (8) via a connecting piece.

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