Automatic blowing PET (Polyethylene Terephthalate) stamping die

Abstract

The utility model discloses a PET (Polyethylene Terephthalate) stamping die capable of automatically blowing. The PET stamping die comprises a lower die and an upper die, the lower die comprises a lower die base, a fixing plate and a male die which are sequentially installed on the machine base. The lower die comprises an upper die base, a needle pressing plate, a needle installing plate and a material returning plate which are sequentially installed on the machine head. A shearing opening corresponding to the male die is formed in the material returning plate; a punching needle corresponding to the shearing opening is mounted on the needle mounting plate; the needle pressing plate is provided with sinking groove air channels corresponding to the punching needles, the sinking groove air channels are communicated with an external air pipe through connectors arranged on the side portion of the needle pressing plate, the punching needles are each provided with an air hole communicated with the sinking groove air channels, and air outlets of the air holes correspond to the male die. According to the utility model, external air pressure is introduced by utilizing the sinking groove air channel arranged on the needle pressing plate, and after the air is conveyed to the punching needle with the hole, the die is closed to discharge air through the punching needle, so that the waste blowing effect is achieved, the waste can be effectively prevented from emitting outwards from the hole of the die mechanism, manual inspection of the waste in a product is replaced, and the yield of the product is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of silica gel buttons, in particular to an automatic air-blowing PET punching die. Background Art

[0002] One of the more important steps in the production process of silicone keys is to laminate the silicone keys in batches onto the PET Mylar sheet to form individual silicone keys. Before laminating, the PET usually needs to be punched into PET sheets of fixed specifications.

[0003] In the prior art, when the die punch for PET punching is not equipped with automatic air blowing, the punching waste is easy to come out from the mechanism hole. It is costly to inspect the waste manually, and the waste cannot be completely inspected when it falls into the product, resulting in debonding during the subsequent pasting process, resulting in a high defect rate, requiring product repair, high labor costs, and a high defect scrap rate. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides an automatic blowing PET die, comprising a lower die and an upper die;

[0005] The lower die comprises a lower die base mounted on a machine base of the punch press, a fixed plate mounted on the lower die base, and a male die mounted on the fixed plate and corresponding to the upper die;

[0006] The upper die comprises an upper die seat mounted on the punch head, a needle pressing plate mounted on the upper die seat, a needle loading plate mounted on the needle pressing plate, and a stripper plate mounted on the needle loading plate and corresponding to the male die; a notch corresponding to the male die is formed on the stripper plate, and a punch corresponding to the notch is mounted on the needle loading plate;

[0007] The needle pressing plate is provided with a groove air channel corresponding to the punching needle, and the groove air channel is connected to the external air pipe through a connector arranged on the side of the needle pressing plate. The punching needles are all provided with air holes connected to the groove air channel, and the air outlets of the air holes correspond to the public mold.

[0008] Wherein, a pneumatic solenoid valve is arranged on the machine base, and the pneumatic solenoid valve is connected to the connecting head through the air pipe.

[0009] Wherein, a liftable slide block is installed on the machine head, and the upper die seat is installed on the slide block.

[0010] Wherein, a DC induction switch is arranged on the slider, and the DC induction switch is connected to the pneumatic solenoid valve through a wire.

[0011] Through the above technical scheme, the utility model uses the sink groove air channel arranged on the needle pressing plate to introduce external air pressure. After the gas is transported to the punching needle with an opening, the mold is closed and the gas is discharged through the punching needle, thereby achieving the effect of blowing waste. It can effectively prevent waste from emitting out of the hole in the mold mechanism, replace manual inspection of waste in the product and greatly improve the product yield. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following briefly introduces the drawings required for describing the embodiments.

[0013] Figure 1 This is a schematic diagram of the main structure of the mold disclosed in the embodiment of the utility model;

[0014] Figure 2 This is a schematic diagram of the needle pressing plate structure disclosed in the embodiment of the utility model;

[0015] Figure 3 This is a schematic diagram of the needle loading plate structure disclosed in the embodiment of the utility model;

[0016] Figure 4 The figure is a schematic diagram of the three-dimensional structure of the punch press disclosed in the embodiment of the utility model.

[0017] In the figure: 10. Lower die base; 11. Fixed plate; 12. Male die; 20. Upper die base; 21. Needle pressing plate; 211. Sinking groove airway; 212. Connector; 22. Needle loading plate; 221. Punch needle; 23. Stripping plate; 231. Notch; 30. Machine head; 31. Slider; 311. DC induction switch; 40. Machine base; 41. Pneumatic solenoid valve; 42. Wire; 43. Air pipe. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0019] refer to Figure 1-4 The utility model provides an automatic blowing PET punch die, comprising a lower die and an upper die; the lower die comprises a lower die base 10 mounted on a machine base 40 of a punch press, a fixed plate 11 mounted on the lower die base 10, and a male die 12 mounted on the fixed plate 11 and corresponding to the upper die; the upper die comprises a liftable slider 31 mounted on a head 30 of the punch press, an upper die base 20 mounted on the slider 31, a needle pressing plate 21 mounted on the upper die base 20, a needle loading plate 22 mounted on the needle pressing plate 21, and a stripping plate 23 mounted on the needle loading plate 22 and corresponding to the male die 12; a notch 231 corresponding to the male die 12 is provided on the stripping plate 23, and a punching needle 221 corresponding to the notch 231 is mounted on the needle loading plate 22;

[0020] The pressing needle plate 21 is provided with a sinking groove air channel 211 corresponding to the punching needle 221, and the sinking groove air channel 211 is connected to the external air pipe 43 through a connector 212 provided on the side of the pressing needle plate 21, and the punching needle 221 is provided with an air hole connected to the sinking groove air channel 211, and the air outlet of the air hole corresponds to the male mold 12;

[0021] A pneumatic solenoid valve 41 is disposed on the base 40 and connected to the connector 212 via an air pipe 43 . A DC induction switch 311 is disposed on the slider 31 and connected to the pneumatic solenoid valve 41 via a wire 42 .

[0022] The working principle of this embodiment:

[0023] Press the two switch buttons with both hands, and the punch head 30 drives the slide block 31 to slide down until the upper and lower molds of the mold are closed to the adjusted depth;

[0024] After the mold is closed to a fixed depth, the DC induction switch 311 is energized, the pneumatic solenoid valve 41 is opened, and the external gas is transported to the connector 212 and the sink trough air channel 211 through the air pipe 43, and then the gas is transported to the punching needle 221 with the air hole;

[0025] After the mold is closed, the blowing is completed, and the gas input from the outside is discharged from the air outlet of the air hole of the punch needle 221 and the waste is discharged into the hole of the punching mechanism, and all the actions are completed.

[0026] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to the above embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An automatic blowing PET die, characterized in that: Including lower die and upper die; The lower die comprises a lower die base (10) mounted on a machine base (40) of a punching machine, a fixing plate (11) mounted on the lower die base (10), and a male die (12) mounted on the fixing plate (11) and corresponding to the upper die; The upper die comprises an upper die seat (20) mounted on a punch head (30), a needle pressing plate (21) mounted on the upper die seat (20), a needle loading plate (22) mounted on the needle pressing plate (21), and a stripping plate (23) mounted on the needle loading plate (22) and corresponding to the male die (12); a notch (231) corresponding to the male die (12) is formed on the stripping plate (23), and a punching needle (221) corresponding to the notch (231) is mounted on the needle loading plate (22); The needle pressing plate (21) is provided with a recessed groove air channel (211) corresponding to the punching needle (221), and the recessed groove air channel (211) is connected to an external air pipe (43) through a connector (212) provided on the side of the needle pressing plate (21), and the punching needle (221) is provided with an air hole connected to the recessed groove air channel (211), and the air outlet of the air hole corresponds to the male mold (12).

2. The automatic blowing PET die according to claim 1, characterized in that: A pneumatic solenoid valve (41) is provided on the machine base (40), and the pneumatic solenoid valve (41) is connected to the connector (212) through the air pipe (43).

3. The automatic blowing PET die according to claim 2, characterized in that: A slide block (31) that can be raised and lowered is installed on the machine head (30), and the upper die seat (20) is installed on the slide block (31).

4. The automatic blowing PET die according to claim 3, characterized in that: The slider (31) is provided with a direct current induction switch (311), and the direct current induction switch (311) is connected to the pneumatic solenoid valve (41) via a wire (42).

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