阅读说明：本技术 一种氮气弹簧平衡装置 (Nitrogen spring balancing device ) 是由 王叶军 于 2021-09-06 设计创作，主要内容包括：本发明涉及压力机领域,具体公开了一种氮气弹簧平衡装置,该氮气弹簧平衡装置包括氮气缸弹簧,所述氮气缸弹簧包括壳体和活塞,其中,所述壳体内设置有活塞,所述活塞连接拉杆,所述活塞带动所述拉杆做往复运动,所述拉杆连压力机滑块,本发明提供的氮气弹簧平衡装置不需外接气源,直接连接储气罐即可,本发明提供的氮气弹簧平衡装置不需消耗电能,节能减排,更加环保且对压力机气路无损害。(The invention relates to the field of presses, and particularly discloses a nitrogen spring balancing device which comprises a nitrogen cylinder spring, wherein the nitrogen cylinder spring comprises a shell and a piston, the piston is arranged in the shell and connected with a pull rod, the piston drives the pull rod to reciprocate, and the pull rod is connected with a slide block of a press.)

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), pull rod (11) is connected in piston (7), piston (7) drive pull rod (11) are reciprocating motion, pull rod (11) are connected and are waited the balancing thing.

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, characterized in that the top of the housing (8) is provided with a top cover (5), and the top cover (5) and the piston (7) are provided with an explosion-proof ring (6).

5. A nitrogen spring balancing device according to claim 5, 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 1, characterised in that the tie rod (11) of the nitrogen cylinder spring (3) is connected to the 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).

Technical Field

The invention relates to the field of presses, in particular to a nitrogen spring balancing device for a press.

Background

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

Disclosure of Invention

The invention provides a nitrogen spring balancing device, which aims to solve the problems that in the prior art, a press slide block balancing system adopts a compressed air balancing cylinder to balance a press slide block, the damage of moisture, oil stain and impurities in compressed air to a gas circuit of the press is large, and meanwhile, the compressed air balancing cylinder needs to be connected with the compressed air for a long time, so that the energy (electric energy) consumption is large.

The technical scheme adopted by the invention is as follows:

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 invention has the beneficial effects that:

1. the nitrogen spring balancing device provided by the invention does not need an external air source and is directly connected with an air storage tank, so that the problems that the existing press slide block balancing system adopts a compressed air balancing cylinder to balance a press slide block, the damage of moisture, oil stain and impurities in compressed air to an air passage of the press is large, and the compressed air balancing cylinder needs to be accessed into the compressed air for a long time and consumes large energy (electric energy) are solved;

2. the nitrogen spring balancing device provided by the invention uses nitrogen, so that the aging of the inside of a used device and a sealing ring can be prevented according to the inertia of the nitrogen, the service life of parts is prolonged, meanwhile, due to the characteristic of the nitrogen, 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 invention is applied to a press machine, and 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 slide block moves upwards, the slide block is pulled upwards, and the pull force counteracts the gravity of the slide block and the upper die, so that the load of the motor becomes minimum, namely the invention ensures that the press machine is more stable when stamping a workpiece, and can prolong the service life of the main motor of the press machine.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are 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 to obtain other drawings based on the drawings without creative efforts.

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

FIG. 2 is a schematic structural diagram of a nitrogen cylinder spring according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a 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 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 clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within 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.

The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. 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 is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, 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 simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered 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 the terms have no special meanings unless otherwise stated, 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 should be noted that, the nitrogen spring balancing device provided in this embodiment does not need an external air source, and is directly connected to the air storage tank body 1, so as to solve the problems that the existing balance system for the press ram 14 uses a compressed air balance cylinder to balance the press ram 14, moisture, oil stain and impurities in the compressed air have great damage to the air passage of the press, and the compressed air balance cylinder needs to be connected with the compressed air for a long time, which results in great energy (electric energy) consumption.

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, a top cover 5 is arranged on the top of the shell 8, an explosion-proof ring 6 is arranged on the top cover 5 and the piston 7, and the explosion-proof ring 6 is used for preventing the pull rod 11 from breaking and the piston 7 from popping 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 sliding block 14 moves upwards, the sliding block 14 is also pulled upwards, and the pull force counteracts the gravity of the sliding block 14 and the upper die, so that the load of the motor becomes minimum, namely the invention ensures that the press machine is more stable when stamping a workpiece, and can prolong the service life of the main motor of the press machine.

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＝10048mm²。

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/mm²i.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 press ram 14 balanced system, moisture, greasy dirt, impurity are great to the damage of press gas circuit in the compressed air, 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 nitrogen spring balancing unit that this embodiment provided need not consume the electric energy, energy saving and emission reduction, environmental protection more.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.