CN218798741U

CN218798741U - Press machine

Info

Publication number: CN218798741U
Application number: CN202222851365.8U
Authority: CN
Inventors: 魏本华; 叶立渊; 孙有学; 梁海峰
Original assignee: Baic Heavy Truck Co Ltd
Current assignee: Baic Heavy Truck Co Ltd
Priority date: 2022-10-28
Filing date: 2022-10-28
Publication date: 2023-04-07
Anticipated expiration: 2032-10-28

Abstract

The utility model discloses a press, include: the sliding block adjusting motor is used for driving the sliding block to move up and down; further comprising: a frequency converter and a die connecting mechanism; the output port of the frequency converter is connected with the sliding block adjusting motor, and the input port of the alternating current power supply of the frequency converter is connected with the power frequency power supply; the mold connecting mechanism includes: hang roof beam, arc goods of furniture for display rather than for use and action bars. The design of converter and mould coupling mechanism, the security is high and long service life, not only guarantees that the press slider adjustment accuracy rate of accuracy reaches 100%, eliminates the electrical safety hidden danger that the contactor exists simultaneously, and mould coupling mechanism's structural improvement makes the mould connect more portably moreover, only needs the user to control operating lever cooperation motor and drive the slider and remove and can realize fixing, and operating mode is more succinct, shortens retooling time, promotes production efficiency.

Description

Press machine

Technical Field

The utility model relates to a punching production line equipment technical field especially relates to a press.

Background

The die filling height of the slide block of the press machine refers to the distance between the lower plane of the slide block and the upper plane of the workbench when the slide block is positioned at the lower dead point. The closing height of the die is the distance between the upper and lower dies when the die is in the lowest working position. In order to ensure that the die works normally, the closing height of the die must be matched with the die filling height of the press, so that the position of the slide block needs to be adjusted to be matched with the die with different closing heights before stamping.

The adjustment of present slider uses contactor control motor just reversing, and control mode is simple, and the precision is not high, and the deviation is too big if lead to the retooling failure even when exceeding 0.2mm, consequently need be assisted manual adjustment repeatedly and fall to 0 until the error, has retooling time length, technical problem that production efficiency is low. In addition, the contactor frequently acts in the adjusting process, the contact is easy to wear, the phenomena of contact adhesion and mechanical clamping stagnation are generated, and the hidden trouble of electrical short circuit is caused; repair and replacement of the contactors also increases equipment costs.

Disclosure of Invention

In order to solve the technical problem, the utility model provides a press. The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview and is intended to neither identify key/critical elements nor delineate the scope of such embodiments. Its sole purpose is to present some concepts in a simplified form as a prelude to the more detailed description that is presented later.

The utility model adopts the following technical scheme:

the utility model provides a press machine, include: slider and be used for the drive the slider adjustment motor that the slider reciprocated still includes: a frequency converter and a die connecting mechanism; the output port of the frequency converter is connected with the sliding block adjusting motor, and the alternating current power supply input port of the frequency converter is connected with a power frequency power supply; the mold connecting mechanism includes: hang roof beam, arc goods of furniture for display rather than for use and action bars, hang the upper surface that the roof beam set up the upper die base at the mould, the arc goods of furniture for display rather than for use setting up on the slider, the action bars with the arc goods of furniture for display rather than for use is connected.

Further, the press machine further comprises: an air switch; and the air switch is arranged on a circuit connected with the frequency converter and the power frequency power supply.

Further, the type of the frequency converter is a Siemens G120 frequency converter.

Further, the mold connecting mechanism further comprises: a support body; the support main body is arranged at the bottom of the sliding block; the support main part is provided with a guide groove, the arc-shaped swing part is arranged in the guide groove, and two ends of the arc-shaped swing part respectively extend out of two opening parts of the guide groove.

Further, the mold connecting mechanism further comprises: positioning blocks; the lower surface of the positioning block is provided with an arc-shaped sinking platform.

Further, the suspension beam includes: the column main beam and cyclic annular auxiliary beam, cyclic annular auxiliary beam cover is established the outside of column main beam, just the column main beam with cyclic annular auxiliary beam passes through the bearing and connects.

Furthermore, the arc-shaped sinking platform is provided with a positioning groove, and the annular auxiliary beam is provided with a positioning column.

Furthermore, the notch of the positioning groove and the end part of the positioning column are provided with positioning inclined planes which are matched with each other.

The utility model discloses the beneficial effect who brings: the design of converter and mould coupling mechanism, the security is high and long service life, not only guarantees that the press slider adjustment accuracy rate of accuracy reaches 100%, eliminates the electrical safety hidden danger that the contactor exists simultaneously, and mould coupling mechanism's structural improvement makes the mould connect more portably moreover, only needs the user to control operating lever cooperation motor and drive the slider and remove and can realize fixing, and operating mode is more succinct, shortens retooling time, promotes production efficiency.

Drawings

In order to illustrate the embodiments of the present invention or the technical solutions in the prior art more clearly, the drawings used in the description of the embodiments or the prior art will be briefly introduced, obviously, the drawings in the description below are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is an electrical schematic of the present invention;

fig. 2 is a schematic structural view of the mold connecting mechanism of the present invention in an open state;

fig. 3 is a schematic structural view of the mold connecting mechanism of the present invention in a closed state.

Detailed Description

The following describes embodiments of the present invention in detail with reference to the accompanying drawings. It should be understood that the described embodiments are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

At present, in order to maximize the production efficiency, the stamping production line equipment of an automobile manufacturing plant adopts a full-automatic production line, wherein the automatic die change of the whole line is a key link, and the die change time is designed to be completed within 180 seconds. However, the accuracy is general due to the fact that a contactor is used for controlling a motor electrically, and mainly an error of 0.1mm is easy to occur in an actual value of a mold closing height, so that manual repeated adjustment is needed until the error is reduced to 0, and the technical problems of long mold changing time and low production efficiency exist.

In view of this, the present invention provides a press machine, as shown in fig. 1 to 3, comprising: the device comprises a slide block 1, a slide block adjusting motor 2, a frequency converter 3, an air switch 4, a mold 5, a working table surface 6 and a mold connecting mechanism.

The slide block adjustment of the press machine is a main component of a large-scale press machine, mechanical components are arranged in a slide block 1 and comprise main components such as a slide block adjusting motor 2, a speed reducer, a transmission shaft, an absolute value, an encoder, a worm gear and the like, and finally the slide block 1 is driven to vertically move up and down through a middle transmission mechanism by utilizing the forward/reverse rotation of the slide block adjusting motor 2.

The type of the frequency converter 3 is a Siemens G120 frequency converter. The output port (terminal marks are U2, W2 and V2) of the frequency converter 3 is connected with the slide block adjusting motor 2, the alternating current power supply input port (terminal marks are L1, L2 and L3) of the frequency converter 3 is connected with the power frequency power supply 7, and the air switch 4 is arranged on a circuit connecting the frequency converter 3 and the power frequency power supply 7.

The air switch 4 realizes overload and short-circuit protection. The frequency converter 3 converts the power frequency power supply 7 into an alternating current power supply with any frequency and any voltage. The frequency converter 3 realizes the stepless speed change of the sliding block adjusting motor 2, and further accurately controls the closing height of the sliding block. The control principle of the press slide adjusting frequency converter is as follows: air switch-power frequency power supply-converter-variable frequency power supply-slider adjustment motor, when using 3 control presses's of converter slider adjustment motor 2, concrete control flow: when the actual value and the set value of the slide block adjusting height are larger than 5mm, the frequency converter 3 outputs 50HZ frequency to control the slide block adjusting motor 2 to operate at high speed; when the operation set value reaches 5mm, the frequency converter 3 outputs 40HZ to 30HZ and then to 20HZ, the sliding block is controlled to adjust the motor 2 to automatically reduce the speed, and the operation is accurately stopped when the set value is reached. Because the frequency converter 3 controls the adjustment precision of the slide block 1 to reach 0.01mm-0.04mm, the adjustment display value of the slide block of the press machine only keeps one decimal, and the precision reaches 100 percent.

The frequency converter can also realize overvoltage protection, undervoltage protection, overcurrent protection, open-phase protection, overload protection, grounding protection, short-circuit protection and over-frequency protection. Overvoltage protection: the output of the frequency converter has a voltage detection function, the output voltage can be automatically adjusted, the motor does not bear overvoltage, and even if the adjustment of the output voltage fails and the output voltage exceeds 110 percent of the normal voltage, the frequency converter can also play a role in protecting the motor by stopping the motor. Under-voltage protection: when the voltage of the motor is lower than 90% of the normal voltage, the frequency converter protects the motor by stopping the motor. Overcurrent protection: when the current of the motor exceeds 150% of the rated value or 200% of the rated current, the frequency converter is shut down for protection. Phase loss protection: monitoring output voltage, and alarming and stopping when the output phase is lack. Overload protection: the motor current is monitored and when the motor current exceeds 120% of the rated current, the motor is protected by stopping the machine. And (3) ground protection: the frequency converter is provided with a special grounding protection circuit, and when one phase or two phases are grounded, the frequency converter immediately protects and stops after alarming. Short-circuit protection: after the output of the frequency converter is short-circuited, overcurrent is inevitably caused, and the frequency converter is stopped to protect the motor within 10 microseconds. Over-frequency protection: the frequency converter has maximum and minimum frequency limiting functions, so that the output frequency can only be in a specified range, and the over-frequency protection function is realized.

The slider that uses contactor control among the prior art adjustment precision is low, can only reach 0.1mm, when the deviation appears in the slider closure height, for guaranteeing stamping workpiece quality this moment and need manual adjustment slider closure precision repeatedly, is 0 up to the error, has prolonged whole line retooling time like this, reduces production efficiency. The utility model discloses utilize the converter to replace contactor control motor just reversing, through the variable speed operation that changes power frequency supply frequency and realize the motor, consequently can cancel the step of manual supplementary regulation, so among the prior art the connected mode of mould and slider also can improve thereupon. In order to solve the above technical problems, the following embodiment describes a specific structure and a use method of a mold connecting mechanism.

The mold connecting mechanism includes: a support body 81, a suspension beam 82, an arc-shaped swinging part 83, an operating rod 84, a positioning block 85 and a guide groove 86.

The suspension beam 82 is arranged on the upper surface of the upper die base of the die 5, and the die 5 is connected with the sliding block 1 through the suspension beam 82, so that the sliding block 1 can be carried to move when moving up and down, and stamping is completed. The supporting body 81 is disposed at the bottom of the slider 1, the specific connection manner is welding, a guiding groove 86 is disposed on the supporting body 81, and the arc-shaped swing part 83 is disposed in the guiding groove 86 and can swing in the guiding groove 86. The structure for supporting the arc-shaped swinging member 83 to swing stably in the guiding groove 86 can be implemented by using the existing guide rails, bearings, balls, etc., and will not be described in detail herein.

The lever 84 is connected to the swing portion 83, and the user rotates the swing portion 83 by the lever 84. The two ends of the arc-shaped swinging part 83 extend out from the two openings of the guide groove 86 respectively, so that a gap is formed between the two ends of the arc-shaped swinging part 83, and the suspension beam 82 slides into the arc-shaped swinging part 83 through the gap. The lower surface of locating piece 85 sets up the heavy platform of arc, and the radian that the heavy platform of arc is unanimous with the radian of hanging beam 82 for hanging beam 82 can block in the heavy platform of arc after sliding in, realizes preliminary location.

When the device is used, the die 5 is placed on the working table surface 6, then the die 5 is pushed until the suspension beam 82 is embedded into the arc swing part 83 and attached to the arc sinking platform on the lower surface of the positioning block 85, as shown in fig. 1, the height of the slide block 1 can be adjusted by the slide block adjusting motor 2 in the period, so that the suspension beam 82 can smoothly enter the device. The lower base of the mold 5 is then secured to the work surface 6 by bolts and the swing arm 83 is rotated by the lever 84 until the swing arm 83 completely encloses the suspension member 82 between the swing arm 83 and the support member 81, as shown in fig. 2. After the suspension beam 82 is fixed, the operation rod 84 can be fixed, and the fixing mode can be any mode such as fixing the rod-shaped operation rod 84 at a corresponding position of the slider through bolts, screws or buckles, which are not described herein again.

The suspension beam 82 includes: a column main beam 821 and a ring auxiliary beam 822. The annular auxiliary beam 822 is sleeved outside the columnar main beam 821, and the columnar main beam 821 is connected with the annular auxiliary beam 822 through a bearing, so that the arc swing 83 can swing around the suspension beam 82 conveniently.

For the connection stability that further increases the mould, the constant head tank is seted up to the heavy platform of arc, sets up reference column 823 on cyclic annular auxiliary beam 822, and reference column 823 stretches into in the constant head tank that the heavy platform of arc was seted up during the installation. The location inclined plane of looks adaptation is seted up to the notch of constant head tank and the tip of reference column 823, and inclination is unanimous, and above-mentioned design is convenient for the reference column 823 is automatic to stretch into in the constant head tank, is convenient for fix a position.

The design of converter and mould coupling mechanism, the security is high and long service life, not only guarantees that the press slider adjustment accuracy rate of accuracy reaches 100%, eliminates the electrical safety hidden danger that the contactor exists simultaneously, and mould coupling mechanism's structural improvement makes the mould connect more portably moreover, only needs the user to control operating lever cooperation motor and drive the slider and remove and can realize fixing, and operating mode is more succinct, shortens retooling time, promotes production efficiency.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A press machine, comprising: slider and be used for the drive the slider adjustment motor that the slider reciprocated, its characterized in that still includes: a frequency converter and a die connecting mechanism; the output port of the frequency converter is connected with the sliding block adjusting motor, and the alternating current power supply input port of the frequency converter is connected with a power frequency power supply; the mold connecting mechanism includes: hang roof beam, arc goods of furniture for display rather than for use and action bars, hang the upper surface that the roof beam set up the upper die base at the mould, the arc goods of furniture for display rather than for use setting up on the slider, the action bars with the arc goods of furniture for display rather than for use is connected.

2. The press of claim 1, further comprising: an air switch; and the air switch is arranged on a circuit connected with the frequency converter and the power frequency power supply.

3. Press according to claim 2, characterised in that the frequency converter is of the siemens G120 frequency converter type.

4. Press according to claim 3, characterised in that the die coupling means further comprise: a support body; the support main body is arranged at the bottom of the sliding block; the support main part is provided with a guide groove, the arc-shaped swing part is arranged in the guide groove, and two ends of the arc-shaped swing part respectively extend out of two opening parts of the guide groove.

5. Press according to claim 4, characterized in that the die connection means further comprise: positioning blocks; the lower surface of the positioning block is provided with an arc-shaped sinking platform.

6. Press according to claim 5, characterized in that the suspension beam comprises: the column main beam and cyclic annular auxiliary beam, cyclic annular auxiliary beam cover is established the outside of column main beam, just the column main beam with cyclic annular auxiliary beam passes through the bearing and connects.

7. The press machine as claimed in claim 6, wherein the arc-shaped sinking platform is provided with positioning slots, and the annular auxiliary beam is provided with positioning columns.

8. The press machine as claimed in claim 7, wherein the notch of the positioning slot and the end of the positioning post are provided with positioning inclined surfaces which are matched with each other.