CN217421991U

CN217421991U - Nitrogen spring balancing device

Info

Publication number: CN217421991U
Application number: CN202122133197.4U
Authority: CN
Inventors: 王叶军
Original assignee: World Precise Machinery China Co ltd
Current assignee: World Precise Machinery China Co ltd
Priority date: 2021-09-06
Filing date: 2021-09-06
Publication date: 2022-09-13
Anticipated expiration: 2031-09-06

Abstract

The utility model relates to a press field specifically discloses a nitrogen spring balancing unit, and this nitrogen spring balancing unit includes nitrogen gas jar spring, nitrogen gas jar spring includes casing and piston, wherein, be provided with the piston in the casing, the hinge joint pull rod, the piston drives reciprocating motion is to the pull rod, the pull rod is pressure machine slider even, the utility model provides a nitrogen spring balancing unit does not need external air supply, the lug connection gas holder can, the utility model provides a nitrogen spring balancing unit does not need the electric energy of consumption, and energy saving and emission reduction just does not have the harm to the press gas circuit more environmental protection.

Description

Nitrogen spring balancing device

Technical Field

The utility model relates to a press field, concretely relates to nitrogen gas spring balancing unit for press.

Background

The existing press slide block balance system adopts a compressed air balance cylinder to balance a press slide block, compressed air needs to be accessed for a long time, moisture, oil stain and impurities in the compressed air have great damage to a press gas circuit, particularly corrode devices such as a pneumatic element sealing ring and a gas pipe, and the compressed air balance cylinder needs to be accessed for a long time and consumes great energy (electric energy).

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve among the prior art pressure machine slider balanced system and adopt the balanced jar of compressed air to balance the pressure machine slider, moisture, greasy dirt, impurity are great to the harm of pressure machine gas circuit among the compressed air, and the balanced jar of compressed air needs to insert compressed air for a long time simultaneously, to the great problem of energy (electric energy) consumption, provides a nitrogen spring balancing unit.

The utility model adopts the technical proposal that:

the utility model provides a nitrogen gas spring balancing unit, includes nitrogen gas cylinder spring, nitrogen gas cylinder spring connects nitrogen gas through the connecting pipe, nitrogen gas cylinder spring includes:

a housing having a piston disposed therein;

the piston is connected with the pull rod, the piston drives the pull rod to do reciprocating motion, and the pull rod is connected with an object to be balanced.

Further, a base is arranged at the bottom of the shell, and the pull rod penetrates through the base to be connected with the object to be balanced.

Further, the nitrogen cylinder spring further comprises a wear-resisting ring, and the wear-resisting ring is arranged below the base.

Further, a top cover is arranged at the top of the shell, and an explosion-proof ring (6) is arranged between the top cover and the piston piece.

Furthermore, a dustproof cover is arranged on the top cover.

Further, the object to be balanced is a press machine, the press machine comprises a connecting rod, and a sliding block is connected below the connecting rod.

Further, a pull rod of the nitrogen cylinder spring is connected with the sliding block.

Further, the sliding block is connected with at least two nitrogen cylinder springs.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model provides a nitrogen spring balancing unit does not need external air supply, the direct connection gas holder can, solved current press slider balance system and adopted the balanced jar of compressed air to balance the press slider, moisture, greasy dirt, impurity in the compressed air are great to the damage of press gas circuit, and the balanced jar of compressed air need insert compressed air for a long time simultaneously, to the great problem of energy (electric energy) consumption, the utility model provides a nitrogen spring balancing unit does not need to consume the electric energy, energy saving and emission reduction, more environmental protection;

2. the nitrogen spring balancing device provided by the utility model uses nitrogen, can prevent the aging of the inside of the used device and the sealing ring according to the inertia of the nitrogen, prolongs the service life of the part, and simultaneously, because of the nitrogen characteristic, the internal pressure can be made higher, the appearance of the nitrogen spring balancing device can be made smaller, and the manufacturing cost is reduced;

3. the nitrogen spring balancing device provided by the utility model is applied to the press machine, when the slide block of the press machine descends, the slide block is pulled, so that the transmission clearance is reduced, and the stamping precision is improved; when the slider goes upward, also holds the slider equally and makes progress, and the pull force offsets the slider and goes up the gravity of mould for motor load becomes minimum, promptly the utility model discloses make the press more steady when the punching press work piece, can improve the life of press main motor.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a nitrogen spring balancing device provided in an embodiment of the present invention;

fig. 2 is a schematic structural view of a nitrogen cylinder spring provided in an embodiment of the present invention;

fig. 3 is a schematic structural diagram of the nitrogen spring balancing device applied to a press according to an embodiment of the present invention;

fig. 4 is a simple model of the transmission operation of the press machine provided by the embodiment of the present invention.

In the figure, 1 is a gas storage tank body, 2 is a connecting pipe, 3 is a nitrogen cylinder spring, 4 is a dust cover, 5 is a top cover, 6 is an anti-explosion ring, 7 is a piston, 8 is a shell, 9 is a base, 10 is a wear-resistant ring, 11 is a pull rod, 12 is a connecting block, 13 is a connecting rod, 14 is a sliding block, 15 is an inflation inlet, and 16 is a crankshaft.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

Unless specifically stated otherwise, the relative arrangement of parts and steps, numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be interpreted as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and if not stated otherwise, the terms have no special meaning, and therefore, the scope of the present invention should not be construed as being limited.

Example (b):

the embodiment provides a nitrogen spring balancing device, as shown in fig. 1, this nitrogen spring balancing device connects the gas holder body 1 through connecting pipe 2, is provided with inflation inlet 15 on this gas holder body 1, inflates it when the nitrogen pressure in the gas holder body 1 is not enough, specifically, this nitrogen spring balancing device includes nitrogen cylinder spring 3, as shown in fig. 2, nitrogen cylinder spring 3 includes casing 8 and piston 7, wherein, be provided with piston 7 in the casing 8, piston 7 connects pull rod 11, piston 7 drives pull rod 11 is reciprocating motion, pull rod 11 connects and treats the equilibrium.

It needs to be explained that, the nitrogen spring balancing unit that this embodiment provided does not need external air supply, the lug connection gas holder body 1 can, it adopts the balanced jar of compressed air to balance press slider 14 to have solved current press slider 14 balanced system, and moisture, greasy dirt, impurity are great to the harm of press gas circuit among the compressed air, and the balanced jar of compressed air needs to insert compressed air for a long time simultaneously, to the great problem of energy (electric energy) consumption, the utility model provides a nitrogen spring balancing unit need not consume the electric energy, and energy saving and emission reduction is more environmental protection.

Further, as shown in fig. 2 and 3, a base 9 is disposed at the bottom of the housing 8, and the pull rod 11 penetrates through the base 9 to connect the object to be balanced.

Further, the nitrogen cylinder spring 3 further comprises a wear-resistant ring 10, and the wear-resistant ring 10 is arranged below the base 9.

Further, the top of the shell 8 is provided with a top cover 5, the top cover 5 and the piston 7 are provided with an explosion-proof ring 6, and in the embodiment, the explosion-proof ring 6 is used for preventing the pull rod 11 from breaking the piston 7 to pop out to cause machine damage.

Further, a dust cover 4 is arranged on the top cover 5.

Further, as shown in fig. 3 and 4, the object to be balanced is a press machine, the press machine comprises a connecting rod 13, and a sliding block 14 is connected below the connecting rod 13.

Further, the pull rod 11 of the nitrogen cylinder spring 3 is connected with the slide block 14 through a connecting block 12, and specifically, at least two nitrogen cylinder springs 3 are connected on the slide block 14.

As shown in fig. 4, the transmission component drives the crankshaft 16 to rotate, the connecting rod 13 is connected with the slide block 14, the slide block 14 moves up and down, the nitrogen cylinder springs 3 on the two sides always pull the slide block 14, and when the slide block 14 of the press machine moves down, the slide block 14 is pulled, so that the transmission gap is reduced, and the stamping precision is improved; when the slider 14 went upward, it was upwards also to hold slider 14 equally, and the pull force offsets the gravity of slider 14 with last mould for motor load becomes minimum, promptly the utility model discloses make the press more steady when the punching press work piece, can improve the life of press owner motor.

It should be noted that, as shown in fig. 3 and 4, in the present embodiment, two sets of nitrogen cylinder springs 3 are used simultaneously and connected to the press ram 14 through the connecting block 12, the nitrogen cylinder spring 3 is installed at the top of the press and connected to the machine body through the fastening member, and the gas storage tank body 1 is installed at the top of the machine body or behind the machine body;

in order to balance the nitrogen spring balancing device, the pulling force of the two nitrogen cylinder springs 3 needs to be equal to the sum of the weights of the slide block 14 and the lower die, the nitrogen pressure filled in the nitrogen cylinder spring 3 needs to be calculated in advance, the diameter of the piston 7 of the nitrogen cylinder spring 3 is 80mm, the weights of the press slide block 14 and the lower die are 1200Kg, and the nitrogen pressure filled in the nitrogen cylinder spring 3 is calculated by taking 2 nitrogen cylinder springs 3 as an example:

the tension of the nitrogen cylinder spring 3 is first calculated from the press ram 14 and the lower die weight:

f1200 × 9.8 11760 n (1kg corresponds to 9.8 n);

next, the pressure receiving area of the nitrogen cylinder spring 3 is calculated, and since the piston 7 is circular in this embodiment, the pressure receiving areas S of the two nitrogen cylinder springs 3 are:

S＝40×40×3.14×2＝10048mm ² 。

then calculating the pressure of the nitrogen filled cylinder spring 3 according to a pressure formula F ═ PS, wherein the cross section area of the S nitrogen spring cylinder piston 7 is larger than that of the P nitrogen spring cylinder piston, and the P is the pressure of the nitrogen filled; f is the gravity of the slide block 14 and the lower die, and also refers to the tension of the nitrogen cylinder spring 3, specifically, the pressure intensity of the nitrogen cylinder spring 3 is calculated in the following manner:

P＝F/S,P＝11760/10048＝1.17N/mm ² i.e., 1.17 MPa;

that is, the pressure of the nitrogen gas filled into the single nitrogen cylinder spring 3 is 1.17MPa, which is generally multiplied by a safety coefficient of about 1.2, and 1.17 × 1.2 ≈ 1.4MPa, so that the pressure of the nitrogen gas filled into the single nitrogen cylinder spring 3 is 1.4MPa, which can balance the nitrogen gas spring balancing device.

To sum up, the nitrogen spring balancing unit that this embodiment provided does not need external air supply, the lug connection gas holder can, it adopts the balanced jar of compressed air to balance press ram 14 to have solved current 14 balanced systems of press ram, moisture among the compressed air, the greasy dirt, impurity is great to the harm of press gas circuit, the balanced jar of compressed air need insert compressed air for a long time simultaneously, consume great problem to the energy (electric energy), the nitrogen spring balancing unit that this embodiment provided need not consume the electric energy, energy saving and emission reduction, environmental protection more.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a nitrogen gas spring balancing unit, includes nitrogen gas cylinder spring (3), nitrogen gas cylinder spring (3) are connected nitrogen gas through connecting pipe (2), its characterized in that, nitrogen gas cylinder spring (3) include:

a housing (8), a piston (7) being arranged in the housing (8);

the piston (7) is connected with the pull rod (11), the piston (7) drives the pull rod (11) to do reciprocating motion, and the pull rod (11) is connected with a to-be-balanced object.

2. The nitrogen spring balancing device according to claim 1, characterized in that a base (9) is arranged at the bottom of the housing (8), and the pull rod (11) penetrates through the base (9) to be connected with the object to be balanced.

3. A nitrogen spring balance device as claimed in claim 2, wherein the nitrogen cylinder spring (3) further comprises a wear ring (10), the wear ring (10) being disposed below the base (9).

4. A nitrogen spring balance device according to claim 1, wherein the top of the housing (8) is provided with a top cover (5), and an explosion-proof ring (6) is arranged between the top cover (5) and the piston (7).

5. A nitrogen spring balancing device according to claim 4, characterized in that, a dust cap (4) is provided on the top cover (5).

6. A nitrogen spring balancing device according to claim 1, characterized in that, the object to be balanced is a press, the press comprises a connecting rod (13), and a slide block (14) is connected below the connecting rod (13).

7. A nitrogen spring balance device according to claim 6, characterised in that the tie rod (11) of the nitrogen cylinder spring (3) is connected to a slide (14).

8. A nitrogen spring balance device according to claim 7, characterized in that at least two nitrogen cylinder springs (3) are connected to the slide (14).