CN113172928A

CN113172928A - Punch press sound absorption noise insulation device

Info

Publication number: CN113172928A
Application number: CN202110597614.2A
Authority: CN
Inventors: 蔡炎江
Original assignee: Foshan Shunde Zhaoda Electronics Co ltd
Current assignee: Foshan Shunde Zhaoda Electronics Co ltd
Priority date: 2021-05-31
Filing date: 2021-05-31
Publication date: 2021-07-27

Abstract

The invention discloses a sound absorption and insulation device for a punch, which comprises side sound insulation plates respectively arranged at the left side and the right side of the punch, a front sound insulation plate arranged in front of an upper workbench of the punch and a rear sound insulation plate arranged at the back of the punch and used for blocking the backward propagation of the internal noise of the punch, wherein the upper end of the front sound insulation plate is hinged with the side sound insulation plates, the side sound insulation plates and the front sound insulation plates are enclosed to form a cavity for accommodating a ball head of the punch and the upper workbench, and an operation space for the entering and exiting of a workpiece is reserved below the side sound insulation plates correspondingly. The side sound insulation board and the front sound insulation board surround the noise generated by the ball head of the punch press for absorption and isolation; a noise channel behind the punch is sealed by a rear sound insulation plate; by inhaling the cotton internal reflection noise of receiving the punch press of sound, such inhale the sound and fall the device combination scheme of making an uproar, can play the source and administer the effect, effectively eliminated the noise in the inside sympathetic response effect in workshop, make the whole space noise in workshop reduce by a wide margin.

Description

Punch press sound absorption noise insulation device

Technical Field

The invention relates to the field of devices for treating punch noise, in particular to a sound absorption and noise insulation device for a punch.

Background

The problem of environmental pollution caused by noise and vibration of a punch press is well known, the problem is often solved by a method of moving away from a residential area in the past, or the periphery of a workshop is subjected to sealing treatment, the influence of the noise on the periphery of the workshop can only be solved due to the fact that the periphery of the workshop is subjected to sealing isolation, however, personnel in the workshop are still in the noise environment, the earplugs need to be worn by personnel entering the punching workshop and are in passive prevention and control, the closed workshop can cause poor air flow, and the influence is caused on the health of the personnel in the workshop. The noise generated in the stamping process production process of the plate is the maximum and can reach 110 decibels. Therefore, there is a need in the art for an effective sound absorption and noise reduction device for a punching machine.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a sound absorption and noise insulation device for a punch press, which can effectively reduce the noise emitted by the punch press.

The purpose of the invention is realized by the following technical scheme.

The invention discloses a sound absorption and insulation device for a punch, which comprises side sound insulation plates respectively arranged at the left side and the right side of the punch, a front sound insulation plate arranged in front of an upper workbench of the punch and a rear sound insulation plate arranged at the back of the punch and used for blocking the backward propagation of the internal noise of the punch, wherein the upper end of the front sound insulation plate is hinged with the side sound insulation plates, the side sound insulation plates and the front sound insulation plates are enclosed to form a cavity for accommodating a ball head of the punch and the upper workbench, and an operation space for the entering and exiting of a workpiece is reserved below the side sound insulation plates correspondingly.

The sound absorption and noise insulation device also comprises polyurethane sound absorption cotton with self-adhesive stuck on the inner wall of the rear part of the punch frame.

Preferably, the side baffle is fixed at a set position on the outer side surface of the frame of the punch press by a side baffle fixing screw.

Preferably, the front sound insulation board comprises an upper board part and a lower board part, and the upper board part and the lower board part are integrally formed and are adapted to the obtuse-angle shape of the punch press sliding seat; the front end of the side baffle is adapted to the obtuse angle.

Preferably, the side acoustic panels, the front acoustic panel, and the rear acoustic panel are each provided as an aluminum foam sheet.

Preferably, the front soundproof plate is provided as a double-layer transparent polycarbonate plate.

Compared with the prior art, the invention has the beneficial effects that: the lateral sound insulation plate and the front sound insulation plate are arranged in front of the punch press to prevent noise generated by the ball head of the punch press from being transmitted outwards; through the noise passageway at punch press rear sound insulation board closed punch press rear after setting up, through set up in the punch press frame and inhale the cotton internal noise that absorbs of sound, then can reduce the source noise of punch press outwards propagation by a wide margin to reduce the whole internal noise in workshop.

Drawings

Fig. 1 is a right-view structural schematic diagram of the combination of the sound absorbing and noise insulating device and the punch press of the present invention.

Fig. 2 is a schematic view showing the opened state of the front and rear sound-insulating panels of the sound-absorbing and noise-insulating apparatus of the present invention.

Fig. 3 is a schematic top view of the structure shown in fig. 1.

Fig. 4 is a schematic diagram of a right-side view structure of a punching machine in the prior art.

FIG. 5 is a schematic view of the construction of the side baffle of the present invention.

Fig. 6 is a right-side structural view of the front baffle plate of the present invention.

Description of reference numerals: 1-side acoustic panel; 11-side baffle plate set screws; 2-front sound insulation board; 201-upper plate portion; 202-lower plate portion; 21-a first hinge; 22-a first gas spring; 3-rear sound insulation board; 31-a second hinge; 32-a second gas spring; 33-rear sound insulation board fixing screw 4-sound absorption cotton; 5-punching machine; 501-ball head; 502-upper table; 503-lower worktable; 504-frame tiger mouth edge; 505-a slide carriage; 506-a frame; 51-a hydraulic station; 52-automatic feeding mechanism; 53-automatic material collecting mechanism; 6-working space.

Detailed Description

The invention is further described below with reference to the accompanying drawings.

The sound absorption and insulation device of the punch press of the invention, as shown in fig. 1 to fig. 3, comprises side acoustic panels 1 respectively arranged at the left and right sides of a punch press 5, a front acoustic panel 2 arranged in front of an upper working table 502 of the punch press 5, and a rear acoustic panel 3 arranged at the back of the punch press 5 for blocking the backward propagation of the noise inside the punch press 5; the upper end of preceding acoustic celotex board 2 is articulated with side acoustic celotex board 1, and more specifically says, the upper left end of preceding acoustic celotex board 2 is articulated with the preceding upper end that is located the left side acoustic celotex board 1 of punch press 5 through corresponding first hinge 21, and the upper right end of preceding acoustic celotex board 2 is articulated with the preceding upper end that is located the side acoustic celotex board 1 on the right side of punch press 5 through corresponding first hinge 21, and then preceding acoustic celotex board 2 can be upturned, conveniently carries out the operation inspection of mould loading and unloading operation and production process. Fig. 4 shows the structure of the punch press 5 by way of example, the punch press 5 is a pneumatic punch press of the prior art, a connecting rod is connected to a crankshaft of the punch press 5, a ball 501 is arranged at the lower end of the connecting rod, an upper die of a die is mounted on the bottom surface of an upper workbench 502, a lower die is fixed on the upper surface of a lower workbench 503, a slide seat 505 forms a sliding mechanism on a frame 506 of the punch press 5, the upper workbench 502 is fixed below the slide seat 505, the ball 501 is in the slide seat 505, the connecting rod is engaged with the slide seat 505 through the ball 501, and thus the crankshaft can drive the slide seat 505 and the upper workbench 502 to move up and down, thereby realizing the punching action. The two side acoustic panels 1 and the front acoustic panel 2 enclose a cavity for accommodating the ball 501 and the upper table 502 of the punch press 5, in other words, the ball 501 and the upper table 502 are surrounded by the front acoustic panel 2 and the two side acoustic panels 1, and as shown in fig. 1, in order to avoid collision between the slide base 505 and the upper table 502 and the front acoustic panel 2, a sufficient safety distance is provided between the front acoustic panel 2 and the slide base 505 and the upper table 502. Because the noise of the punch 5 is mainly the impact sound of the ball head 501 in the working process, the combination of the front sound insulation board 2 and the two side sound insulation boards 1 can effectively block the outward transmission of the noise at the source. The rear sound insulation plate 3 can effectively block the backward propagation of the noise generated inside the punch press 5, thus effectively reducing the noise emitted from the punch press 5. Through the arrangement, the resonance noise of the multiple punching machines 5 in the workshop can be greatly reduced, so that the workshop is not closed completely for preventing and controlling the noise, and the working environment in the workshop is favorably improved.

Further, as shown in fig. 2, between the lower part of the side soundproof plate 1 and the lower table 503 and both sides of the press 5 are working spaces 6 for automatic feeding and automatic receiving, and it is necessary to leave a sufficient space for actual equipment.

Further, as shown in fig. 1 and fig. 3, the sound absorption and noise insulation device of the punching machine of the present invention further comprises sound absorption cotton 4 adhered to the inner wall of the rear portion of the frame 506 of the punching machine 5, specifically, the sound absorption cotton 4 is cut according to the actual size of the inner walls of the left and right sides of the frame 506 of the punching machine 5 and the existing internal device components of the punching machine 5, so that the sound absorption cotton is adhered to the inner wall of the frame 506 of the punching machine 5 with self-adhesive. The sound-absorbing cotton is a product which is sold in the market and has various selectable specifications, and is convenient to install and replace.

The rear sound insulation board 3 is combined with the front sound insulation board 2 and the side sound insulation board 1, so that noise generated by the punch 5 is blocked in the range of the frame 506 of the punch 5, and the sound absorption cotton 4 is combined to absorb the noise in the range of the frame 506, so that the noise transmitted outwards by the punch 5 can be greatly reduced, and the noise in a workshop is effectively reduced.

Further, as shown in fig. 1 and 3, the upper end portion of the rear sound insulating plate 3 is hinged to the press 5 via a second hinge 31, as shown in fig. 2, so that the rear sound insulating plate 3 can be turned up to facilitate cleaning and maintenance work of the inside of the press 5.

Further, as shown in fig. 2, the sound absorbing and insulating device of the punching machine of the present invention further comprises a first air spring 22 for supporting the front baffle 2 to be upturned and opened, wherein one end of the first air spring 22 is hinged to the front baffle 2, and the other end of the first air spring 22 corresponding to the front baffle 2 is hinged to the side baffle 1, so that the front baffle 2 can be opened easily and effortlessly.

Further, as shown in fig. 2, the sound absorbing and noise insulating device for a punch press of the present invention further includes a second gas spring 32 for supporting the rear sound insulating plate 3 to be turned upward and opened, one end of the second gas spring 32 is hinged to the rear sound insulating plate 3, the other end corresponding to the second gas spring 32 is hinged to the punch press 5, and the other end corresponding to the second gas spring 32 may be hinged to the frame 506 of the punch press 5; as shown in fig. 2, the second gas spring 32 is provided so as to support and maintain the opened state of the rear soundboard 3, and the second gas spring 32 is provided so as to open the rear soundboard 3 easily and with less effort.

Further, as shown in fig. 1, the sound absorbing and insulating device of the punching machine of the present invention further includes a side baffle fixing screw 11 for fixedly connecting the side baffle 1 with the outer side surface of the frame 506 of the punching machine 5; when the upper table 502 is attached with a mold clamping device and needs to be evacuated, the side acoustic panel 1 and the outer side of the frame 506 of the punch 5 need to be configured as a bracket to be suspended and fixed, as shown in fig. 1 and 4, the rear end of the side acoustic panel 1 is covered backwards with the frame slot edge 504 which is larger than 100mm, so that the side acoustic panel 1 can effectively absorb and isolate noise. After the daily interior cleaning and maintenance of the punch press 5 are finished, the rear sound insulation plate 3 can be fixed to the back of the punch press 5 through the rear sound insulation plate fixing screws 33, and the rear sound insulation plate 3 is enabled to be attached to the back of the machine frame 506, so that the sound insulation effect of the rear sound insulation plate 3 is guaranteed.

Further, as shown in fig. 6, the front sound insulation board 2 includes an upper board portion 201 and a lower board portion 202, the upper board portion 201 and the lower board portion 202 are integrally formed, the upper board portion 201 and the lower board portion 202 form an inner obtuse angle which is adapted to the slide seat 505 of the punch press 5, such as an angle "X" in fig. 6, so that a channel which is beneficial to narrow the outward propagation of the noise generated by the ball 505 is configured, and the outward noise emitted by the punch press 5 is reduced; as shown in fig. 1 and 5, the front end of the side baffle plate 1 is fitted with the obtuse angle "X" to improve the sound insulation effect of the present device.

In the embodiment, foamed aluminum sheets are used for the side soundproof plates 1, the front soundproof plate 2, and the rear soundproof plate 3. The foamed aluminum plate is a composite material consisting of metal and air holes (the density is 0.2g/cm 3-0.6 g/cm3, the porosity is 75% -90%, and the bending strength is 3-15 Mpa), and the foamed aluminum plate has the characteristics of good sound absorption effect, no toxicity, flame retardance, light weight and high bending strength. The sound absorption and noise insulation device for the punch press, which is manufactured by using the foamed aluminum plate, completely saves a frame bracket mechanism of the device, so that the sound absorption and noise insulation device for the punch press can realize the simplification and the light weight of the structure. In practical applications, foamed aluminum plates with a thickness of 20mm to 25mm and a density of 0.25g/cm for carrying out thin-wall aluminum foam production can be used for the side acoustic panel 1, the front acoustic panel 2 and the rear acoustic panel 3.

In an embodiment, the front baffle 2 may be a double-layer transparent polycarbonate plate to facilitate the operation of the inspection mold to be directly observed through the front baffle 2 during the production process. The double-layer transparent polycarbonate plate is the prior art, and the hollow structure is used for realizing effective sound insulation.

In practical application, in a closed state of the front baffle board 2, as shown in fig. 1, the upper end of the front baffle board 2 may be flush with the upper end of the side baffle board 1, the lower end of the front baffle board 2 may be flush with the lower end of the side baffle board 1, the upper end of the front baffle board 2 is higher than the ball head 501 running to the highest point by at least 150mm, and when the ball head 501 runs to the lowest position, the upper ends of the front baffle board 2 and the side baffle board 1 are higher than the ball head 501 by at least 400mm, and the scheme may be configured as large as practical as possible to maximize blocking of impact noise of the ball head 501. The pneumatic press 5 shown in fig. 3 is also provided with a hydraulic station 51; the automatic production is also provided with an automatic feeding mechanism 52 and an automatic receiving mechanism 53, so that under the condition that the automatic feeding mechanism 52 and the automatic receiving mechanism 53 are arranged, the lower end of the front sound insulation board 2 can be lengthened downwards to a position capable of shielding the die, so that the noise generated by the die during stamping can be blocked to the maximum extent.

In summary, the side acoustic panels 1 and the front acoustic panel 2 enclose the noise generated by the ball 501 of the punch 5 for absorption and isolation; the rear sound insulation board 3 seals a noise channel behind the punch 5; by inhaling the cotton 4 internal reflection noise of accepting punch press 5 of sound, such inhale the sound and fall the device combination scheme of making an uproar, can play the source and administer the effect, effectively reduced the noise of many punch presses 5 in the inside sympathetic response effect in workshop, make the whole space noise in workshop reduce by a wide margin, in practical application, the effect of administering noise pollution can reach and reduce more than 20 db.

Therefore, the above embodiments are only the embodiments with better effects, and any sound absorption and noise reduction device with the same or equivalent structure is within the protection scope of the present application.

Claims

1. The utility model provides a punch press sound absorption noise insulation device which characterized in that: the punching machine comprises side sound insulation boards (1) arranged on the left side and the right side of a punching machine (5), a front sound insulation board (2) arranged in front of an upper workbench (502) of the punching machine (5) and a rear sound insulation board (3) arranged on the back of the punching machine (5) and used for blocking backward propagation of internal noise of the punching machine (5), wherein the upper end of the front sound insulation board (2) is hinged to the side sound insulation boards (1), the side sound insulation boards (1) and the front sound insulation boards (2) are enclosed to form a cavity used for containing a ball head (501) of the punching machine (5) and the upper workbench (502), and an operation space (6) used for enabling a workpiece to enter and exit is reserved below the side sound insulation boards (1).

2. The sound absorption and insulation device of the punch press according to claim 1, wherein: the sound absorption cotton is characterized by further comprising sound absorption cotton (4) adhered to the inner wall of the rear part of the rack (506) of the punch press (5).

3. The sound absorption and insulation device of the punch press according to claim 1, wherein: the side acoustic panel (1) is fixed at a position set on the outer side surface of the frame (506) of the punch (5) through a side acoustic panel fixing screw (11).

4. The sound absorption and insulation device of the punch press according to claim 1, wherein: the front sound insulation board (2) comprises an upper board part (201) and a lower board part (202), wherein an obtuse angle used for adapting to the appearance of a sliding seat (505) of a punch press (5) is formed between the upper board part (201) and the lower board part (202), and the front end part of the side sound insulation board (1) is adapted to the obtuse angle.

5. The sound absorption and insulation device of the punch press according to claim 1, wherein: the side acoustic panels (1), the front acoustic panel (2), and the rear acoustic panel (3) are all made of foamed aluminum sheets.

6. The sound absorption and insulation device of the punch press according to claim 1, wherein: the front sound insulation board (2) is a double-layer transparent polycarbonate board.